| Entries |
| Document | Title | Date |
|---|
| 20080199028 | Speaker diaphragm and speaker including the same - A speaker diaphragm includes a thermoplastic resin having a three-layer structure. The three-layer structure includes a polyester film as a base material of the three-layer structure, a polyimide-based resin layer as a top layer of the three-layer structure, and another polyimide-based resin layer as a bottom layer of the three-layer structure. | 08-21-2008 |
| 20080205674 | Super Magnetostriction Speaker - A supermagnetostriction speaker featuring good acoustic characteristics when used being placed on a horizontal surface. The supermagnetostriction speaker comprises a yoke of a cylindrical shape having a bottom and a lid and constituting a magnetic path; a supermagnetostriction element which is fixed at its one end to the lid of the yoke, has the other end which is a free end, and is arranged in the direction of cylinder of the yoke to generate displacement depending upon a variation in the magnetic field; a coil arranged to surround the supermagnetostriction element in the yoke and generates a magnetic field in response to signals fed from an external unit; a vibration rod having a flange at an intermediate portion thereof and is so arranged that the one end thereof comes in contact with the free end of the supermagnetostriction element and that the other end thereof penetrating through the center hole in the bottom of the yoke transmits the displacement of the supermagnetostriction element to an external body; a rubbery elastic body arranged being held between the flange of the vibration rod and the bottom of the yoke; and a body portion exerting a load on the supermagnetostriction element via the yoke in a state where the other end of the vibration rod is placed on the external body in a manner that the supermagnetostriction speaker stands by itself, so that the displacement of the supermagnetostriction element is effectively transmitted to the external body due to the mass. | 08-28-2008 |
| 20080212807 | Micromachined Acoustic Transducers - The present invention relates to an acoustic transducer that includes one or more capsules, side walls and a backing plate. Each capsule contains a cavity formed by the side walls and a plurality of film stacks. Each film stack has one or more membranes that can be a piezoelectric layer. Two or more of the film stacks that form the first cavity faces each other. A film stack and the backing plate face each other and form the wall of a second cavity. The transducers of this invention have a broadband response, can radiate sounds uni-directionally, and produce high quality sounds at low frequencies and at high intensities. They can be driven by AC signals. They can be fabricated using conventional integrated circuit manufacturing processes and therefore can be mass produced easily and inexpensively. | 09-04-2008 |
| 20080247574 | PIEZOELECTRIC BUZZER DRIVING CIRCUIT - A piezoelectric buzzer driving circuit ( | 10-09-2008 |
| 20080260187 | Devices and systems including transducers - A device includes a substrate and a transducer attached to the substrate, wherein the substrate includes a surface to which the transducer is attached and at least one edge member extending along at least a portion of the outside edge of the surface. The surface can be a generally planar surface. The edge member is stiffer than the surface. In several embodiments, the transducer is adapted to vibrate. The transducer can, for example, be selected from the group consisting of a piezoelectric transducer, an electrostrictive transducer and a magnetostrictive transducer. Preferably, the transducer is attached to the surface of the substrate by a metallic bonding agent and, more particularly, by welding. | 10-23-2008 |
| 20080260188 | Acoustic Diaphragm and Speaker Having the Same - Disclosed herein is an acoustic diaphragm for converting electrical signals into mechanical signals to produce sounds. The acoustic diaphragm comprises carbon nanotubes or graphite nanofibers as major materials. Preferably, the carbon nanotubes or graphite nanofibers are included or dispersed in the acoustic diaphragm. Since the acoustic diaphragm has excellent physical properties in terms of elastic modulus, internal loss and strength, it can effectively achieve superior sound quality and high output in a particular frequency band as well as in a broad frequency band. | 10-23-2008 |
| 20080273720 | Optimized piezo design for a mechanical-to-acoustical transducer - The present invention relates to an acoustic transducer that coverts a mechanical motion into acoustical energy. The acoustic transducer includes a diaphragm and at least one support on at least a portion of the diaphragm. At least one actuator may then be provided that is operatively coupled to the diaphragm, wherein the diaphragm or the actuator include one or more areas of reduced stiffness relative to other areas on the diaphragm or actuator. In addition, the present invention relates to modifications in actuator design with respect to engagement of the diaphragm and engagement of the actuator with a given support. | 11-06-2008 |
| 20080292119 | Asymmetrical Moving Systems for a Piezoelectric Speaker and Asymmetrical Speaker - The present invention discloses a moving system ( | 11-27-2008 |
| 20080317266 | Contact Structure of a Film-Type Audio-Speaker - The invention is a contact structure of a film-type audio-speaker of a structure appropriate for transmitting audio signal current to the entire audio-speaker surface without attenuating the strength of the signals while achieving enhanced durability. There is provided a contact structure for use in a film-type audio-speaker including a piezoelectric film unit having a piezoelectric film which is obtained by surface-treating a film and coating an electrically conductive polymer layer on the surface of the film, and one or more terminal portions which are electrically connected to a piezoelectric film unit, the contact structure of the film-type audio-speaker comprising: a metal electrically conductive layer coated around the circumference of the piezoelectric film unit, and having a relatively excellent electrical conductivity in comparison with the electrically conductive polymer layer, wherein the terminal portions are in close contact with the metal electrically conductive layer. | 12-25-2008 |
| 20090010459 | MULTI-TWISTED ACOUSTIC ARRAY FOR MEDICAL ULTRASOUND - Multiple twisted or rotated arrays are provided. For example, a memory alloy may allow manufacture of multiple rows of elements on a flat substrate. The memory of the alloy is activated to twist different rows in different ways, such as two adjacent substantially parallel but oppositely rotated arrays. By selecting different apertures along a given twist, different planes are scanned due to the difference in direction of the elements of the aperture. By selecting different apertures on differently rotated arrays, a larger volume may be scanned. | 01-08-2009 |
| 20090129613 | Acoustic device - An assembly ( | 05-21-2009 |
| 20090147972 | HYBRID SPEAKER - Provided is a hybrid speaker including a vibration diaphragm having a conductive coating layer formed by coating a conductive material for forming an electrode on a surface of a polymer film and an aerogel layer formed by coating aerogel on the other surface of the polymer film, a piezo element disposed at a surface of the vibration diaphragm, forming opposite poles with the vibration diaphragm, and generating sound pressure by a piezoelectric effect, a PCB electrically connected to the vibration diaphragm and the piezo element and applying an external AC voltage, a first insulation body disposed on the other surface of the vibration diaphragm opposite to the piezo element, and a case accommodating and fixing the above constituent elements and having a sonnd pressure discharge hole in a surface thereof. | 06-11-2009 |
| 20090147973 | APPARATUS INCLUDING TWO HOUSINGS AND A PIEZOELECTRIC TRANSDUCER - An apparatus ( | 06-11-2009 |
| 20090154735 | PIEZOELECTRIC MICROPHONE, SPEAKER, MICROPHONE-SPEAKER INTEGRATED DEVICE AND MANUFACTURING METHOD THEREOF - A piezoelectric microphone, a speaker, a microphone-speaker integrated device and a manufacturing method thereof are provided. The microphone-speaker integrated device includes a silicon substrate and an insulating layer deposited on the silicon substrate; a piezoelectric plate formed on the insulating layer; and a mating electrode formed on the piezoelectric plate. The mating electrode is patterned with a polarity arrayed in series. | 06-18-2009 |
| 20090175470 | ACOUSTIC WAVE DEVICE AND METHOD OF MANUFACTURING THE SAME - An acoustic wave device includes a substrate; an acoustic wave element provided on the substrate; a terminal that is provided on the substrate and is electrically coupled to the acoustic wave element; a first insulating layer that is provided on the substrate and has a first opening at a region thereof overlapped with at least a part of the terminal; a second insulating layer that has an second opening at a region thereof overlapped with at least a part of the first opening and is provided on the first insulating layer and the acoustic wave element so that a cavity is formed above the acoustic wave element; a third insulating layer that has a third opening including the region where the first opening and the second opening are overlapped with each other, and is provided on the second insulating layer; a metal post that is electrically coupled to the terminal and is provided in the first opening, the second opening and the third opening; and a solder ball provided on the metal post. | 07-09-2009 |
| 20090175471 | LOUDSPEAKER APPARATUS - A loudspeaker apparatus includes an acoustic diaphragm; a support member having a housing, which is a hole in a surface of the support member facing the acoustic diaphragm; a magnetostrictive actuator having a magnetostrictor and a drive rod coupled to an end of the magnetostrictor, the magnetostrictive actuator being inserted into the housing such that the drive rod contacts the acoustic diaphragm, the magnetostrictive actuator applying vibration to the acoustic diaphragm; and a spring inserted into the housing from a position opposite to a position of the drive rod of the magnetostrictive actuator, the spring pressing the magnetostrictive actuator toward the acoustic diaphragm and applying a load to the magnetostrictor. | 07-09-2009 |
| 20090185701 | FLEXIBLE PIEZOELECTRIC SOUND-GENERATING DEVICES - A sound-generating device comprises a first enclosure having at least one first electrode and a first piezoelectric layer, a first terminal of an audio signal output being coupled to the at least one first electrode of the first enclosure, a second enclosure having at least one first electrode and a first piezoelectric layer, and a first bendable element coupled between the first and second enclosures. The at least one first electrode is coupled with the first terminal of the audio signal output. The first piezoelectric layer of the first enclosure and the first piezoelectric layer of the second enclosure are configured to respond to the signal supplied by the audio signal output and to generate sound waves. | 07-23-2009 |
| 20090196442 | Low-Profile Piezoelectric Speaker Assembly - A low-profile speaker assembly comprises a substrate and a substantially plan piezoelectric element disposed in a plane substantially parallel to the substrate and mechanically connected to the substrate at one or more edges. A tuning mass is attached to a face of the piezoelectric element, to improve low-frequency performance of the speaker assembly. In some embodiments, the tuning mass is disposed on the surface of the piezoelectric element facing the substrate. The substrate, which may comprise a printed circuit board, may include a cut-out region arranged to allow movement of the tuning mass within the cut-out region. | 08-06-2009 |
| 20090202090 | PIEZO SPEAKER PRESSURE SENSOR - A piezo speaker pressure sensor that includes a bladder and a piezo speaker element. The bladder abuts the piezo speaker element. A pressure may be sensed from the piezo speaker element proportional to a pressure exerted on the bladder in a direction of the piezo speaker element. The piezo speaker element functions as a speaker when audio signals are received by the piezo speaker element. | 08-13-2009 |
| 20090208039 | HYBRID ACTUATOR, LOUDSPEAKER AND SOUND OUTPUT METHOD - A hybrid actuator ( | 08-20-2009 |
| 20090245546 | Medium/Low Band Sound Reinforcement Film-Type Audio-Speaker Using Piezoelectric Film as Vibration Element - A film-type audio-speaker is provided that uses a piezoelectric film as a vibration element to provide a reinforcement of the low to medium frequency band sound waves generated. The film-type audio-speaker uses a piezoelectric film as a vibration element and comprises a piezoelectric film with an electrically conductive polymer or metal layer coated on its surface, a terminal portion electrically connected to the piezoelectric film; and an audio-speaker driving unit connected to the terminal portion. The film-type audio-speaker has a cover member that is made of a porous material attached to the front surface and/or the rear surface of the piezoelectric film. | 10-01-2009 |
| 20100008524 | MAGNETOSTRICTIVE AUDITORY SYSTEM - Disclosed is hearing device that uses magnetostrictive materials to assist a user in hearing and comprehending sounds. Conductive coils are made with a magnetostrictive covering that can comprise a film or other coating. In addition, printed circuit boards can be used with traces that form a coil to generate a magnetic field that activates a magnetostrictive film disposed over the coil traces on the printed circuit board. Enhanced effects are achieved using these systems. Delays in the signal processing can also be introduced by varying the thickness of the magnetostrictive coverings. | 01-14-2010 |
| 20100054505 | FILM SPEAKER - A film speaker includes at least one connecting pole, at least one piezoelectric film forming an empty cavity and an conductive layer coated on the piezoelectric film. The connecting pole is electrically connected to the conductive layer. | 03-04-2010 |
| 20100054506 | PIEZOELECTRIC SPEAKER AND ELECTRONIC APPARATUS WITH PIEZOELECTRIC SPEAKER - Provided is a piezoelectric speaker ( | 03-04-2010 |
| 20100054507 | FILM SPEAKER - A film speaker is provided. The film speaker includes: a piezoelectric film oscillating by receiving a voltage corresponding to a sound signal from a sound signal supply unit; a plurality of carbon nanotube films formed on both sides of the piezoelectric film; and a plurality of electrodes connected to the plurality of carbon nanotube films, receiving the voltage corresponding to the sound signal from the sound signal supply unit, and applying the voltage to the plurality of carbon nanotube films. | 03-04-2010 |
| 20100061573 | PIEZOELECTRIC ACOUSTIC TRANSDUCER - A piezoelectric type loudspeaker, which achieves both space-saving and high sound quality without increasing the number of parts, is provided. In order to achieve this, the present invention includes: a piezoelectric element constructed of a piezoelectric material interposed between two surface electrodes; and a diaphragm of which at least one principal surface is provided with a print wiring and at least one principal surface is bonded to the piezoelectric element, and the diaphragm includes: a frame section; a vibrating section which is bonded with the piezoelectric element, and which vibrates; and at least one supporting section which connects the frame section and the vibrating section, and which supports the vibrating section, and either the frame section or the at least one supporting section includes at least one electrical resistance which is integrally formed to the print wiring, and which constructs, in combination with the piezoelectric element, a series-RC circuit. | 03-11-2010 |
| 20100074459 | PIEZOELECTRIC MICROSPEAKER AND METHOD OF FABRICATING THE SAME - Provided are a piezoelectric microspeaker and a method of fabricating the same. In the piezoelectric microspeaker, a diaphragm includes a first region and a second region. The first region may be formed of a material capable of maximizing an exciting force, and the second region may be formed of a material having less initial stress and a lower Young's modulus than the first region. | 03-25-2010 |
| 20100086151 | Piezoelectric Speaker - The present invention relates to a piezoelectric speaker comprising a membrane, and an actuating layer comprising at least one piezoelectric element mounted to the membrane, which at least one piezoelectric element is adapted to, when actuated, cause the membrane to vibrate in order to generate sound. The speaker is characterized by means for varying the fraction of the actuating layer that is actuated depending on the sound frequency to be generated, wherein a smaller fraction of the actuating layer is actuated for higher sound frequencies. Varying the fraction of the actuating layer that is actuated depending on the sound frequency to be generated allows reduction of the power consumption of the speaker with maintained sound pressure level. The invention also relates to a method for driving a piezoelectric speaker. | 04-08-2010 |
| 20100092011 | MEMBRANE FOR AN ELECTROACOUSTIC TRANSDUCER AND ACOUSTIC DEVICE - A membrane for an electroacoustic transducer is disclosed, wherein said membrane ( | 04-15-2010 |
| 20100119090 | Omni-directional radiator for multi-transducer array - An omni-directional acoustic horn for applications in a liquid transmission medium deploys a plurality of transducers distributed along an interior face of the horn to radiate against an opposed surface. The arrangement mimics operation at a greater depth of submergence to depress development of acoustic cavitation bubbles. | 05-13-2010 |
| 20100124344 | PIEZOELECTRIC BODY MODULE AND MANUFACTURING METHOD THEREFOR - In order to miniaturize a piezoelectric body module, in which a rhombus-shaped electronic part | 05-20-2010 |
| 20100150381 | MICRO-SPEAKER AND MANUFACTURING METHOD THEREOF - A micro-speaker and a manufacturing method thereof are provided. The micro-speaker has a sandwich structure. The micro-speaker includes two piezoelectric material layers and a diaphragm disposed between the two piezoelectric material layers, where the piezoelectric material layers have a ring-shaped structure. The problem of insufficient sound pressure at low frequency is resolved, and the flexibility of the micro-speaker is improved. | 06-17-2010 |
| 20100158283 | PIEZOELECTRIC SPEAKER AND METHOD OF MANUFACTURING THE SAME - A piezoelectric speaker and a method of manufacturing the same that can obtain a high sound pressure using a piezoelectric thin film are provided. The piezoelectric speaker includes a piezoelectric thin film, electrodes formed on an upper surface or upper and lower surfaces of the piezoelectric thin film, a damping material layer formed on the lower surface of the piezoelectric thin film, and a frame attached around at least one of the piezoelectric thin film and the damping material layer using an adhesive. | 06-24-2010 |
| 20100195851 | ACTIVE TEMPERATURE CONTROL OF PIEZOELECTRIC MEMBRANE-BASED MICRO-ELECTROMECHANICAL DEVICES - In a representative embodiment, an apparatus, comprises a substrate; a microelectronic ultrasonic transducer (MUT) disposed over the substrate; and a thermoelectric device disposed proximate to the MUT and configured to provide heat to or remove heat from the MUT. A microelectromechanical MEMs device is also described. | 08-05-2010 |
| 20100239109 | ACOUSTIC DEVICE AND METHOD OF MANUFACTURING SAME - An acoustic device ( | 09-23-2010 |
| 20100246862 | DEVICE AND METHOD FOR THE EXCITATION AND/OR DAMPING AND/OR DETECTION OR STRUCTURAL OSCILLATIONS OF A PLATE-SHAPED DEVICE USING A PIEZOELECTRIC STRIP DEVICE - An apparatus and a method for the excitation and/or damping and/or detection of structural oscillations of a plate-shaped device by means of a piezoelectric strip device are described. The apparatus comprises a carrier device ( | 09-30-2010 |
| 20100246863 | PIEZOELECTRIC ACOUSTIC DEVICE AND ELECTRONIC APPARATUS - A piezoelectric acoustic device comprises: at least two piezoelectric actuators; a support body that supports the at least two piezoelectric actuators; and a signal input unit that drives the at least two piezoelectric actuators at respective arbitrary times. At least one pair of piezoelectric actuators among the at least two piezoelectric actuators is arranged in such a manner that their sound radiation surfaces face each other with a predetermined gap. | 09-30-2010 |
| 20100284554 | TRANSDUCER FOR VIBRATION ABSORBING, SENSING, AND TRANSMITTING - A hermetically sealed actuator design for absorbing and reducing the effect of sound or vibration energy from a vibrating surface. The device comprises a body ( | 11-11-2010 |
| 20100290650 | PIEZOELECTRIC SPEAKER - A purpose of the invention is to provide a piezoelectric speaker that can serve as an antenna and can be used for frequencies in the MHz band, thereby it is possible to suppress enlarging of the size due to use of the piezoelectric speaker also as the antenna to a minimum level. The antenna ( | 11-18-2010 |
| 20100296677 | Flat panel piezoelectric loudspeaker - A flat panel piezoelectric loudspeaker includes a piezoelectric element, a first electrode and a second electrode. The piezoelectric element includes a first surface and a second surface opposite to the first surface. The first electrode is electrically connected to the piezoelectric element and disposed on the first surface. The second electrode is electrically connected to the piezoelectric element and disposed on the second surface. At least one of the first electrode and the second electrode includes a carbon nanotube structure. The carbon nanotube structure includes a plurality of carbon nanotubes approximately aligned along a same direction. | 11-25-2010 |
| 20110002485 | PIEZOELECTRIC ACTUATOR AND ELECTRONIC DEVICE - A piezoelectric actuator | 01-06-2011 |
| 20110002486 | CAPACITIVE LOAD DRIVING CIRCUIT AND METHOD, LIQUID DROPLET EJECTION DEVICE, AND PIEZOELECTRIC SPEAKER DRIVING DEVICE - There is provided a capacitive load driving circuit which applies a driving signal to a capacitive load. The driving circuit includes: an operational amplifier outputting a difference signal between signals from an inverting input terminal and a non-inverting input terminal, and setting a loop gain; a pulse width modulator pulse-width-modulating the difference signal outputted by the operational amplifier, and outputting resultant digital signal; a digital voltage amplifier amplifying a voltage of the digital signal; a first filter smoothing a digital signal from the digital voltage amplifier, and supplying a smoothed signal to the capacitive load as the driving signal; an impedance converting circuit converting an impedance of an output signal of the first filter; and a first feedback circuit feeding-back the driving signal, which is outputted from the first filter, to the inverting input terminal of the operational amplifier via the impedance converting circuit. | 01-06-2011 |
| 20110038495 | PIEZOELECTRIC MICRO SPEAKER AND METHOD OF MANUFACTURING THE SAME - A piezoelectric micro speaker and a method of manufacturing the same are provided. The piezoelectric micro speaker includes a device plate, a front plate bonded on a front surface of the device plate, and a rear plate bonded on a rear surface of the device plate. The device plate includes a diaphragm, a piezoelectric actuator that vibrates the diaphragm, and a front cavity disposed in front of the diaphragm. The front plate includes a radiation hole connected to the front cavity. The rear plate includes a rear cavity formed in a surface of the rear plate facing the piezoelectric actuator, and a bent hole connected to the rear cavity. A sound absorption layer is formed on an inner surface of the rear cavity and absorbs sound radiated backward from the diaphragm so as to suppress the sound from being reflected on the rear plate. | 02-17-2011 |
| 20110075867 | PIEZOELECTRIC MICRO SPEAKER INCLUDING WEIGHT ATTACHED TO VIBRATING MEMBRANE AND METHOD OF MANUFACTURING THE SAME - Provided are a piezoelectric micro speaker and a method of manufacturing the same. The piezoelectric micro speaker includes: a substrate having a cavity therein; a diaphragm that is disposed on the substrate, the diaphragm including a vibrating membrane that overlaps the cavity; a piezoelectric actuator that is disposed on the vibrating membrane; and a weight that is disposed in the cavity and attached to a center portion of the vibrating membrane. | 03-31-2011 |
| 20110085684 | PIEZOELECTRIC MICRO SPEAKER - Provided is a piezoelectric micro speaker. The piezoelectric micro speaker includes a device plate having a front cavity, a front plate having a radiation hole which communicates with the front cavity in front of the device plate, and a rear plate having a rear cavity and a vent portion. A rear portion of the device plate forms a wall of the vent portion. The device plate includes at least one first vent hole which communicates with the vent portion, and the front plate includes at least one second vent hole which communicates with the first vent hole. | 04-14-2011 |
| 20110110541 | ELECTROMAGNETIC TRANSDUCTION ACOUSTIC BRIDGE AND RELATED METHODS - An electromagnetic transduction acoustic bridge appliance may include an electro-acoustic transducer including a housing, and a coil carried by the housing, and a piezoelectric paste adjacent the electro-acoustic transducer and including metallic powder embedded therein for picking up audio information of a magnetic field lost from the coil. The electromagnetic transduction acoustic bridge appliance may include a link coupling the piezoelectric paste to the housing. The piezoelectric paste may form an acoustic bridge for picking up the audio information and transmitting the audio information to the housing using the link. | 05-12-2011 |
| 20110110542 | PIEZOELECTRIC EXCITER AND PIEZOELECTRIC EXCITER UNIT - A piezoelectric exciter includes: a beam including a substrate and a piezoelectric element affixed to the substrate; a supporting portion that supports the beam; a terminal fixed to the supporting portion, the terminal feeding electricity to the piezoelectric element; and a conductive member that electrically connects the terminal to an electrode of the piezoelectric element, wherein a conductive-member-containing recess is formed in the supporting portion and the conductive member is contained in the conductive-member-containing recess in an embedded state and wherein the supporting portion is made of a resin that is subjected to insert molding together with the substrate and the beam is made by affixing the piezoelectric element to the substrate after the insert molding. | 05-12-2011 |
| 20110116663 | MAGNETOSTRICTIVE MICROLOUDSPEAKER - An acoustic actuator comprises a support layer ( | 05-19-2011 |
| 20110116664 | MAGNETOSTRICTIVE ACTUATOR AND SPEAKER AND DEVICE USING SAID MAGNETOSTRICTIVE ACTUATOR - A magnetostrictive actuator includes a magnetostrictive element extending along a central axis, a movable section displaced in response to a change of a shape of the magnetostrictive element, a voice coil wound about the magnetostrictive element, a magnet surrounding the magnetostrictive element and the voice coil, a lower yoke having an upper surface coupled to a lower surface of the magnet and a lower surface of the magnetostrictive element, an upper yoke having a lower surface of the upper yoke being coupled to an upper surface of the magnet and an inside surface of the upper yoke facing the outside surface of the movable section across a clearance, and an elastic member disposed in the clearance. The elastic member joined to an outside surface of the movable section and the inside surface of the upper yoke. This magnetostrictive actuator has a low-profile structure, suppresses undesired vibration, and exhibits preferable linearity. | 05-19-2011 |
| 20110135123 | PIEZOELECTRIC SPEAKER AND METHOD OF MANUFACTURING THE SAME - In a piezoelectric speaker, an acoustic diaphragm is thicker than a piezoelectric thin film and is formed of a more flexible and higher elasticity material than the piezoelectric thin film, thereby greatly improving output sound pressure in a low frequency band and reducing sound distortion. Further, the piezoelectric thin film is attached to the acoustic diaphragm in an inclined structure in which the piezoelectric thin film is horizontally turned from the acoustic diaphragm, thereby preventing a standing wave from being created by structural symmetry and minimizing sound distortion. | 06-09-2011 |
| 20110176695 | PIEZOELECTRIC PANEL SPEAKER AND OPTIMAL METHOD OF DESIGNING THE SAME - A piezoelectric panel speaker and an optimal method of designing the same is disclosed. In the structure of the speaker, at least one piezoelectric plate attached at a surrounding frame supports a diaphragm inside the surrounding frame. A spacer is inserted between the piezoelectric plate and the diaphragm. The structure of the piezoelectric plates fixed at the surrounding frame improves the speaker performance within the low frequency range. The finite element method is employed to build a mathematical model to simulate the sound pressure loading of the piezoelectric panel speaker. Also, the simulated annealing method is employed to approach the optimal design parameters of the speaker structure. | 07-21-2011 |
| 20110182450 | PIEZOELECTRIC MICRO-ACOUSTIC TRANSDUCER AND METHOD OF FABRICATING THE SAME - Provided are a piezoelectric micro-acoustic transducer and a method of fabricating the same. In the piezoelectric micro-acoustic transducer, a diaphragm is divided into a first region and a second region. The first region may be formed of a material capable of maximizing the exciting force, and the second region may be formed of a material having less initial stress and a lower Young's modulus than the first region. Also, the second region has a corrugated shape. | 07-28-2011 |
| 20110206222 | MEMBRANE FOR AN ACOUSTIC TRANSDUCER - A membrane for an acoustic transducer is provided which comprises a first portion having a first stiffness, and a second portion comprising a first subsection having a second stiffness and a second subsection having a third stiffness, wherein the second stiffness and the third stiffness are different. | 08-25-2011 |
| 20110222714 | TOUCH-SENSITIVE SENSOR - A touch-sensitive sensor and a method for detecting a position where a user touches a wire or cable are described. | 09-15-2011 |
| 20110235831 | DRIVE DEVICE - There is provided a drive device capable of driving a capacitive load with efficiency and with low power consumption while keeping quality input reproducibility for output signal. A switching drive circuit | 09-29-2011 |
| 20110255718 | PIEZOELECTRIC SPEAKER, PIEZOELECTRIC AUDIO DEVICE EMPLOYING PIEZOELECTRIC SPEAKER, AND SENSOR WITH ALERT DEVICE ATTACHED - A piezoelectric speaker includes: a piezoelectric vibrator including a piezoelectric body formed of a piezoelectric element and a plate-shaped body which has a larger diameter than the piezoelectric body and which is attached to a surface of the piezoelectric body in a concentric form; and a film-shaped body that is provided around the piezoelectric vibrator so as to elastically hold the piezoelectric vibrator. The film-shaped body includes a coarse and dense portion in a circumferential direction thereof, which has a physically coarse portion which can become a mountain portion or a valley portion or both, and which is disposed so as to correspond to a natural frequency of an in-phase mode in which antinodes and nodes are formed in a concentric form. The piezoelectric vibrator and the film-shaped body form a sound producing body. | 10-20-2011 |
| 20110274301 | Underwater Transducer Apparatus Using Polarized Stacked Piezoelectric Elements and a Method of Operating the Same - The current device is a transducer for underwater communication using a plurality of stacked polarized piezoelectric elements. The piezoelectric elements are stacked within a communication device such as a loudspeaker or a set of headphones or earphones so that the polarity of each element is orientated in the same direction. When the elements are activated, the elements operate in phase and drive a pressure or sound wave to its intended recipient at a significantly high volume. The transducer may also be configured to receive acoustic signals within a device such as a microphone by collecting the acoustic signals in phase by the stacked piezoelectric elements from a user. The elements convert the acoustic signals to electrical signals which are then transmitted to another user. | 11-10-2011 |
| 20110305356 | Audio output drivers for piezo speakers - A driver circuit for a piezoelectric speaker is described, wherein charge is transferred from a charge reservoir to the speaker. In a first embodiment a delta sigma circuit uses a pulse width modulated digital audio signal to control a push-pull circuit to drive the piezoelectric speaker. High frequency harmonics are introduced to the delta sigma drive signals to enhance the low frequency response of the speaker. A charge recovery mechanism recovers charge from the speaker to reduce the frequency of replenishing the charge reservoir and to provide additional drive current for the speaker. In a second embodiment the pulse width modulated signal is used to drive a voltage quadrupling circuit that drives the piezoelectric speaker, wherein the reservoir capacitor is integrated with the capacitors of quadrupling circuit, which provides charge recovery. | 12-15-2011 |
| 20110311082 | CAPACITIVE ELECTRO-ACOUSTIC TRANSDUCTION SYSTEM AND CAPACITIVE ELECTRO-ACOUSTIC TRANSDUCER THEREOF - A capacitive electro-acoustic transducer includes a pair of input terminals, a pair of output terminals, an electrode plate, and a diaphragm. The pair of input terminals receives an audio signal, and the pair of output terminals outputs the audio signal, wherein at least one terminal of these terminals is a conductive magnet. The electrode plate has a first end and a second end electrically connected to a first input terminal of the pair of input terminals and a first output terminal of the pair of output terminals, respectively. The diaphragm is disposed on one side of the electrode plate and has a third end and a fourth end electrically connected to a second input terminal of the pair of input terminals and a second output terminal of the pair of output terminals, respectively. | 12-22-2011 |
| 20120027236 | ACOUSTIC PRESSURE TRANSDUCER - Acoustic transducer means are provided. A monolithic semiconductor layer defines a plate, a pair of oppositely disposed torsional hinges, a flexible extension and at least a portion of a support structure. Acoustic pressure communicated to the plate results in tensile strain of the flexible extension. The flexible extension provides a varying electrical characteristic responsive to the tensile strain. An electric signal corresponding to the acoustic pressure can be derived from the varying electrical characteristic of the flexible extension. | 02-02-2012 |
| 20120057730 | PIEZOELECTRIC ACOUSTIC TRANSDUCER - A piezoelectric acoustic transducer ( | 03-08-2012 |
| 20120082326 | PIEZOELECTRIC SPEAKER - The piezoelectric speaker ( | 04-05-2012 |
| 20120087522 | PIEZOELECTRIC MICROSPEAKER AND METHOD OF FABRICATING THE SAME - A piezoelectric microspeaker and a method of fabricating the same are provided. The piezoelectric microspeaker includes a substrate having a through hole therein; a diaphragm disposed on the substrate and covering the through hole; and a plurality of piezoelectric actuators including a piezoelectric member, a first electrode, and a second electrode, wherein the first and second electrodes are configured to induce an electric field in the piezoelectric member. The piezoelectric actuators include a central actuator, which is disposed on a central portion of the diaphragm and a plurality of edge actuators, which are disposed a predetermined distance apart from the central actuator and are formed on a plurality of edge portions of the diaphragm. | 04-12-2012 |
| 20120087523 | SPEAKER HAVING CENTER PLEAT - The invention relates to a speaker with a sound radiation direction, comprising:
| 04-12-2012 |
| 20120099746 | PIEZOELECTRIC ACOUSTIC TRANSDUCER - Provided is a piezoelectric type loudspeaker capable of reproducing a high sound pressure in a limited space, without increasing a voltage applied to a piezoelectric element in a bass range. A plurality of piezoelectric diaphragms are disposed in parallel, and coupled to one another in a thickness direction of the diaphragms via a coupling member, and a polarity of the piezoelectric element and the applied voltage are defined so as to cause deformations in opposite directions from each other. One diaphragm includes an edge on a periphery, and operates as a sound wave radiation surface. At least one diaphragm is fixed to a housing side via a fixing member. Series resistance is connected to the piezoelectric element on the piezoelectric diaphragm fixed to the housing side. | 04-26-2012 |
| 20120114150 | SPEAKER APPARATUS - A speaker apparatus includes: an actuator serving as a source of vibration; a vibration transmitting member connected to the actuator; and two sheet-like diaphragms provided opposite to each other in the thickness direction thereof with the vibration transmitting member and disposed in contact with the vibration transmitting member, wherein vibration generated at the actuator is transmitted to each of the two diaphragms through the vibration transmitting member to output sounds. | 05-10-2012 |
| 20120148073 | PIEZOELECTRIC SPEAKER - Disclosed is a piezoelectric speaker including: a piezoelectric layer that converts electrical signals into oscillation and outputs sound; an electrode that is formed on a top or a bottom of the piezoelectric layer to apply the electrical signals to the piezoelectric layer; an acoustic diaphragm that is made of a hetero material including a first acoustic diaphragm and a second acoustic diaphragm and is attached to the bottom of the piezoelectric layer on which the electrode is formed; and a frame attached in a form enclosing a side of the acoustic diaphragm. | 06-14-2012 |
| 20120155678 | PIEZOELECTRIC SPEAKER - A piezoelectric speaker includes a cover with a receiving space and a vibrating speaker unit accommodated in the receiving space. The vibrating speaker unit includes a piezoelectric oscillator including an upper surface and an lower surface, a diaphragm disposed on the upper surface of the piezoelectric oscillator, and a vibrating member kept a distance from the lower surface of the piezoelectric oscillator. The piezoelectric oscillator defines a first amplitude capable of driving the diaphragm only and a second amplitude driving both the vibrating member to vibrating with a largest amplitude and the diaphragm to generate sound. The distance is larger than the first amplitude and smaller than the second amplitude. | 06-21-2012 |
| 20120163638 | Piezoelectric Sound Component - A piezoelectric sound component that includes a resin sheet, a piezoelectric diaphragm, and a casing. The piezoelectric diaphragm vibrates by bending, and is attached to at least part of a central portion of the resin sheet excluding a peripheral portion of the resin sheet. The casing holds the peripheral portion of the resin sheet. The casing supports at least one corner portion of the piezoelectric diaphragm. | 06-28-2012 |
| 20120230524 | PIEZOELECTRIC PANEL SPEAKER - A piezoelectric panel speaker has a frame, piezoelectric actuators and a vibrating diaphragm set into the hollow assembly space of the frame. Two corresponding sides of the diaphragm are fixed onto the actuator, and the other two corresponding sides are spaced with said frame. The actuator is fixed onto both sides of the diaphragm, high sound pressure is generated by the diaphragm through high deformation of the piezoelectric bimorph plates. The plates of the actuator could be driven independently by the driving voltage. This could reduce the resonance of the diaphragm through the phase of driving voltage. The diaphragm could generate smooth acoustic response. Two corresponding sides of the diaphragm spaced with said frame are linked to said frame via a flexible connector. This could reduce the clamping effect of the frame against the diaphragm, and avoid the reduction of sound pressure arising from amplitude limitation of the vibrating diaphragm. | 09-13-2012 |
| 20120257772 | ELECTRO-ACOUSTIC TRANSDUCER, ELECTRONIC APPARATUS, ELECTRO-ACOUSTIC CONVERSION METHOD, AND SOUND WAVE OUTPUT METHOD OF ELECTRONIC APPARATUS - There are provided a vibration film ( | 10-11-2012 |
| 20120308055 | Smart Material Actuator Capable of Operating in Three Dimensions - A smart material actuator having more than two actuating arms, more than two mechanical webs, and being driven by a piezo or other smart material device within an enclosed compensator, and which may be adapted for use as an actuator, an energy capture device, or a sensor. In certain embodiments, the smart material actuator can also operate as the driver for an audio speaker. | 12-06-2012 |
| 20130016860 | THIN-FILM SPEAKER SYSTEM AND METHODS FOR MAKING AND USING THE SAME - A speaker system comprising a power source, an audio processor, a speaker comprising at least one conductive component comprising conductive ink, an enabling device, wherein the enabling device provides power to the audio processor, memory and speaker, and a memory, wherein the memory contains audio data, wherein the speaker has substantially uniform thickness and thickness substantially similar to that of paper, wherein the speaker is capable of being inserted seamlessly into written materials, and wherein electricity is transmitted using conductive components and the conductive components comprise a conductive ink and wherein electricity coming from the enabling device, when applied to the speaker, causes mechanical deformation and sound. | 01-17-2013 |
| 20130039516 | Sound Production Component - A sound production component that includes a vibration element, a support member, and a connection part. The vibration element includes a polygonal vibration plate and an electromechanical conversion element attached to the vibration plate. The connection part connects an entire periphery of the vibration plate to the support member. At least a portion of the connection part has a curved shape. The length of a portion of the connection part which connects each corner of the vibration plate and the support member is shorter than the length of a portion of the connection part which connects a central portion of each side edge of the vibration plate and the support member. | 02-14-2013 |
| 20130051587 | PIEZOELECTRIC MICROPHONE FABRICATED ON GLASS - This disclosure provides systems, methods and apparatus for sense elements in an electromechanical microphone device. In one aspect, a piezoelectric sense element may include a glass substrate, electrode layers, piezoelectric layers, and elastic layers. The elastic layers may serve to modify the neutral plane of the piezoelectric sense element. Including an elastic layer or layers to modify the neutral plane of the piezoelectric sense element may serve to configure the sense element such that the piezoelectric layer generates a voltage in response to a sound wave or may serve to increase the sensitivity of the sense element. | 02-28-2013 |
| 20130051588 | Electroacoustic Transducer having Reduced Losses due to Transverse Emission and Improved Performance due to Suppression of Transverse Modes - An electroacoustic transducer has reduced loss due to acoustic waves emitted in the transverse direction. For this purpose, a transducer comprises a central excitation area, inner edge areas flanking the central excitation area, outer edge areas flanking the inner edge areas, and areas of the busbar flanking the outer edge areas. The longitudinal speed of the areas can be set so that the excitation profile of a piston mode is obtained. | 02-28-2013 |
| 20130094680 | Portable Electronic Device with Magnetic Audio Interface and Audio Reproduction Accessory Therefor - A portable electronic device includes an audio coder-decoder ‘CODEC’ capable of generating analog audio signals from digital audio representations, and includes a transmit coil capable of producing an alternating magnetic field upon passage of the analog audio signals through the transmit coil. Automatically determining the presence of conditions for magnetic coupling between the portable electronic device and an audio reproduction accessory results in the portable electronic device causing the analog audio signals to be routed from the CODEC to the transmit coil. When an audio reproduction accessory for a portable electronic device is magnetically coupled to the portable electronic device, the sole source of energy for audible sound generated by the audio reproduction accessory may be energy contained in a magnetic field that acts on the audio reproduction accessory, the magnetic field produced by a transmit coil of the portable electronic device. | 04-18-2013 |
| 20130094681 | Acoustic Generator - Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element. | 04-18-2013 |
| 20130121514 | FLEXIBLE PIEZOELECTRIC SOUND-GENERATING DEVICES - A sound-generating device comprises at least two first enclosures and a thin film. The at least two first enclosures with at least one first bendable element coupled between two neighboring first enclosures. The thin film comprising at least one electrode and at least one piezoelectric layer, the at least one electrode being coupled with a terminal of an audio signal output, wherein the at least one piezoelectric layer is configured to respond to a signal supplied by the audio signal output and to generate sound waves. The thin film and the at least two first enclosures are coupled together forming at least two first cavities between the thin film and the first enclosure, and the first bendable element is attached to the thin film. | 05-16-2013 |
| 20130136280 | MICROSPEAKER WITH PIEZOELECTRIC, METAL AND DIELECTRIC MEMBRANE - This disclosure provides systems, methods and apparatus for microspeaker devices. In one aspect, a microspeaker element may include a deformable dielectric membrane that spans a speaker cavity. The deformable dielectric membrane can include a piezoactuator and a dielectric layer. Upon application of a driving signal to the piezoactuator, the dielectric layer can deflect, producing sound. In some implementations, an array of microspeaker elements can be encapsulated between a glass substrate and a cover glass. Sound generated by the microspeaker elements can be emitted through a speaker grill formed in the cover glass. | 05-30-2013 |
| 20130163792 | VIBRATION SPEAKER WITH A SECURING DEVICE - The present invention is directed to a vibration speaker with a securing device. The vibration speaker includes at least one transducer. The vibration speaker is attached to a securing element, which includes a bottom plate, at least one lateral plate and at least one securing portion. A top surface of the bottom plate is in contact with a bottom surface of the vibration speaker; the lateral plate extends from an edge of the bottom plate, and is in contact with a side surface of the vibration speaker; and the securing portion fastens the vibration speaker. | 06-27-2013 |
| 20130163793 | VIBRATION SPEAKER WITH A SECURING DEVICE - The present invention is directed to a vibration speaker with a securing device. The vibration speaker includes a transducer, and a bottom having at least one groove. At least one fastening element corresponding to the at least one groove is capable of being inserted into the groove. The transducer is driven to generate vibration, which is then transferred to a vibration plate via the fastening element. | 06-27-2013 |
| 20130170675 | Multi-Coaxial Transducers and Methods - Coaxial transducers, some of which include a first assembly and assembly, each of which includes a magnet and a coil. | 07-04-2013 |
| 20130170676 | MAGNETIC CIRCUIT FOR SPEAKER AND SPEAKER USING SAME - A bond magnet according to the present invention is anisotropic, and a magnetic field is oriented from a lowest edge of side surface of the bond magnet toward an upper section of side surface of the bond magnet. Further, the bond magnet is configured such that the upper section of side surface of the bond magnet is disposed closer to a yoke side surface of a yoke than the lower side surface of the bond magnet is, and the upper section of side surface of the bond magnet faces against the yoke side surface. With this, a magnetic gap is provided between the upper section of side surface of the bond magnet and the yoke side surface. Thus, it is possible to improve a magnetism characteristic of the bond magnet, and to achieve both of magnetic efficiency and productivity of a magnetic circuit for a speaker. | 07-04-2013 |
| 20130177182 | VIBRATION SPEAKER - A vibration speaker includes a top cover, a bottom cover, at least one transducer plate and at least one conductive connector. The top cover and the bottom cover define a space to accommodate the transducer plate and the conductive connector. Each transducer plate includes a conductive plate, a first smart material layer coated on a first surface of the conductive plate, and a first electrode layer formed on the first smart material layer. The conductive connector presses on the transducer plate, wherein an insulating layer is coated on an area between the first surface and the conductive connector but excluding the first electrode layer, such that the conductive connector electrically contacts the first electrode layer but is insulated from the conductive plate. | 07-11-2013 |
| 20130177183 | VIBRATION SPEAKER - A vibration speaker includes a top cover, a bottom cover, at least one transducer plate and at least one conductive connector. The top cover and the bottom cover define a space to accommodate the transducer plate and the conductive connector. Each transducer plate includes a conductive plate, a first smart material layer coated on a first surface of the conductive plate, and a first electrode layer formed on the first smart material layer. The conductive connector presses on the transducer plate, wherein an insulating layer is coated on an area between the first surface and the conductive connector but excluding the first electrode layer, such that the conductive connector electrically contacts the first electrode layer but is insulated from the conductive plate. | 07-11-2013 |
| 20130216069 | OSCILLATION DEVICE AND ELECTRONIC APPARATUS - An oscillation device ( | 08-22-2013 |
| 20130223657 | ELECTRONIC DEVICE - An electronic device ( | 08-29-2013 |
| 20130236038 | WIRELESS POWER TRANSMISSION - A method, apparatus and software are disclosed for wireless power transmission in which the power transmission frequency is optimised. | 09-12-2013 |
| 20130243224 | OSCILLATION DEVICE AND PORTABLE DEVICE - An oscillation device includes a first oscillator ( | 09-19-2013 |
| 20130259274 | PIEZOELECTRIC VIBRATION DEVICE AND PORTABLE TERMINAL USING THE SAME - A piezoelectric vibration device capable of being made thin and generating strong vibration, and a portable terminal using the same. Disclosed are a piezoelectric vibration device including at least: a support body; a vibration member that is mounted to the support body to be able to vibrate; a vibration element capable of being independently subjected to bending vibration by application of an electric signal; and a deformable first connecting member that is at least partly formed of a viscoelastic body, the deformable first connecting member being disposed between a first surface of the vibration element that is a bending surface and one main surface of the vibration member, and connecting the first surface of the vibration element and the one main surface of the vibration member, and a portable terminal using the piezoelectric vibration device. | 10-03-2013 |
| 20130279722 | TEMPERATURE COMPENSATED PIEZOELECTRIC BUZZER - A buzzer includes a piezoelectric diaphragm and a housing enclosing the diaphragm and defining a resonating chamber. The chamber includes a sound port and has an optimal resonating frequency f | 10-24-2013 |
| 20130287232 | PIEZOELECTRIC PARTIAL-SURFACE SOUND TRANSDUCER - A piezoelectric sound transducer using a piezoelectric plastic material is developed from a substrate layer and a layer of a piezoelectric plastic material deposited thereon, the piezoelectric plastic layer covering the substrate layer not completely but having openings. | 10-31-2013 |
| 20130287233 | ACOUSTIC ACTUATOR AND ACOUSTIC ACTUATOR SYSTEM - An acoustic actuator according to an exemplary embodiment of the present invention includes: an actuator element generating a corresponding sound in response to an applied electrical signal; a supporting member supporting the actuator element so as to form a movement axis of the actuator element; and an edge member connected with the actuator element. The actuator element includes: a piezoelectric unit having at least one piezoelectric member of which a length is larger than a width by at least √{square root over (2)} times; and a membrane unit including at least one membrane member generating the corresponding sound in response to the applied electrical signal, by being fixedly adhered to the piezoelectric unit so as to extend in a length direction of the at least one piezoelectric member and by forming wave movement in the extending direction in response to a current applied to the piezoelectric unit. | 10-31-2013 |
| 20130301856 | PIEZOELECTRIC SPEAKER HAVING WEIGHT AND METHOD OF PRODUCING THE SAME - The present disclosure relates to a piezoelectric speaker having a weight that enables a frequency response characteristic of the piezoelectric speaker to be uniform by disposing a weight of a flexible material on an acoustic diaphragm or on and below an acoustic diaphragm of the piezoelectric speaker, thereby enhancing flatness of sound. The piezoelectric speaker having the weight includes a piezoelectric device having a piezoelectric layer and an electrode formed on or on and below the piezoelectric layer to apply an electrical signal to the piezoelectric layer; an acoustic diaphragm having a wider area than the piezoelectric device and bonded on one surface of the piezoelectric device; a frame disposed in a form that surrounds a side surface of the acoustic diaphragm; and a weight disposed above the acoustic diaphragm or above and below the acoustic diaphragm on which the piezoelectric device is disposed to thereby control a vibration. | 11-14-2013 |
| 20130308799 | COMPACT HOUSING FOR PORTABLE ELECTRONIC DEVICE WITH INTERNAL SPEAKER - Improved approaches for providing a speaker within a housing of a portable electronic device are disclosed. The housing of the portable electronic device can be compact, such as a low profile housing. In one embodiment, an acoustic chamber for a speaker can be formed internal to a housing for a portable electronic device using non-dedicated space. In another embodiment, irregular surfaces can be sealed so that an acoustic chamber for a speaker can be formed internal to a housing for a portable electronic device. | 11-21-2013 |
| 20130322663 | Transparent Acoustically Active Device - The invention relates to an acoustically active device ( | 12-05-2013 |
| 20140003634 | POLYMER SPEAKER | 01-02-2014 |
| 20140029773 | SPEAKER | 01-30-2014 |
| 20140050339 | Reverse-Phase Modulating Structure of Piezoelectric Ceramic Speaker - The present invention provides a reverse-phase modulating structure of a piezoelectric ceramic speaker, comprising a positioning frame, an acoustic generator and two or more than two flexible units; wherein the acoustic generator comprises a plurality of ceramic layers stacked onto one another to form a ceramic slat, and said flexible units are clamped between an inner edge of the positioning frame and the acoustic generator. Via the pressure exerted onto the acoustic member by the flexible units, the in-phase movement of the acoustic generator can be modulated and the phase conflict of the acoustic generator can be reduced as well as the prevision of the sound quality distortions such that high quality of the ceramic speaker can be enhanced and realized. | 02-20-2014 |
| 20140056449 | STACKED PIEZOELECTRIC SPEAKER DEVICE - A stacked piezoelectric speaker device having a structure where a piezoelectric ceramic plate and an internal electrode plate are stacked, in which an inactive dummy electrode is disposed around an active internal electrode on the same layer to ensure uniform plastic shrinkage. The stacked piezoelectric speaker device has a structure in which an inactive dummy electrode that does not contribute to polarization is disposed around an active internal electrode that contributes to the polarization, the active internal electrode and the inactive dummy electrode being stacked on the same layer. | 02-27-2014 |
| 20140079255 | Plane-Type Speaker and AV Apparatus - A plane-type speaker where, on one of the main surfaces of an exciter film, there are placed piezoelectric films which are expanded and contracted by sound-releasing driving signals applied thereto. An oscillation plate is secured to the excited film through frame members. The oscillation plate has a flat-plate shape and is secured to the exciter film while having a warped shape such that it is gradually spaced further away from the exciter film, with decreasing distance from the secured ends to a center area, when viewed at a side surface. This realizes a state where the exciter film is pulled outwardly with respect to the secured ends due to bending stresses therein. If sound-releasing driving signals are applied to the piezoelectric films in this state, the exciter film contracts and expands along with the expansion and contraction of the piezoelectric films, thereby causing the oscillation plate to oscillate. | 03-20-2014 |
| 20140086436 | PIEZOELECTRIC SOUNDER - A piezoelectric sounder for transmitting a signal by using a sound comprises a piezoelectric diaphragm constructed by attaching a piezoelectric element to a metal sheet, a ease containing the piezoelectric diaphragm and having a resonance space defined therewithin and adapted to resonate as the piezoelectric diaphragm vibrates, a pair of terminals electrically connected to the metal sheet and piezoelectric element of the piezoelectric diaphragm, while the piezoelectric sounder has no resonance points fr, fa in a frequency range of the signal. Thus removing the resonance points fr, fa from the frequency band of the signal to be transmitted prevents the signal transmission distance from shortening at the resonance points, thereby improving the stability in communications. | 03-27-2014 |
| 20140098978 | SOUND GENERATOR AND SOUND-GENERATING APPARATUS - There are provided a sound generator with less peaks and dips in sound-pressure frequency characteristics, and a sound-generating apparatus which employs the sound generator. A sound generator and a sound-generating apparatus using the same are provided, wherein the sound generator includes at least a vibration plate, and a plurality of piezoelectric elements attached to the vibration plate so as to be spaced from each other to cause the vibration plate to vibrate. The plurality of piezoelectric elements includes piezoelectric elements having at least two different thicknesses. The piezoelectric elements having at least two different thicknesses are disposed in two directions that cross each other in a main surface of the vibration plate. Accordingly, it is possible to achieve a sound generator, as well as a sound-generating apparatus which have less peaks and dips in sound-pressure frequency characteristics. | 04-10-2014 |
| 20140153750 | DIRECTIONAL LOUDSPEAKER - In a directional loudspeaker, an audible sound signal that is modulated with a carrier wave in the ultrasonic wave band is input to a piezoelectric element, and thereby a diaphragm having the piezoelectric element is vibrated and a sound wave is generated. In such a directional loudspeaker, the diaphragm is fixed to a fixed part via a plurality of beams disposed along the outer circumference of the diaphragm. | 06-05-2014 |
| 20140169594 | MEMS COMPONENT FOR GENERATING PRESSURE PULSES - A MEMS component for generating pressure pulses is provided, its micromechanical structure including at least three function levels: a first function level in which at least one stationary trench structure is implemented, a second function level, which is implemented above the first function level and includes at least one triggerable displacement element as well as through-openings as pressure outlet openings, the displacement element protruding into the trench structure and being movable in parallel with the function levels, whereby positive and negative pressure pulses are generated, and a third function level, which is implemented above the second function level and includes at least one triggerable cover element for at least one part of the pressure outlet openings in the second function level. | 06-19-2014 |
| 20140177881 | DEVICE WITH A CONTROLLED DISPLACEMENT MEMBRANE - Membrane device comprising a support ( | 06-26-2014 |
| 20140233768 | ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC DEVICE - The problem is to reduce variations of sound pressure in the sound pressure frequency characteristics. To solve the problem, an acoustic generator includes a film that is a supporting plate; a frame member that is provided on the outer circumference of the film; a piezoelectric element that is provided on the film within a frame of the frame member; and a resin layer that is provided on the film within the frame of the frame member, and the resin layer including an air bubble. By the air bubble, a decrease in the sound pressure is prevented, peaks and dips in the frequency characteristics of sound pressure are reduced, and high-quality sounds are generated. | 08-21-2014 |
| 20140233769 | DIAPHRAGM ARRANGEMENT FOR GENERATING SOUND - The invention relates to a diaphragm arrangement which is intended to be fitted to a structural component or fixing ring for the purpose of generating sound, having two piezo crystals which are fitted opposite one another on either side of an electrically conductive diaphragm which can oscillate, wherein the piezo crystals are each fastened to the diaphragm, which has a connection contact, in an electrically conductive and force-transmitting manner, and the piezo crystals are each electrically conductively connected to a contact plate on their opposite side. In this case, each contact plate has at least one contact strip which extends in the direction of the structural component and of which the end in each case has an electrical connection contact. The diaphragm arrangement can be excited by electrical voltages which can be applied to the three connection contacts. This produces a secure contact-connection during operation and the contact plates act as heat-conducting plates for dissipating heat from the piezo crystals. | 08-21-2014 |
| 20140241550 | PEZOELECTRIC SOUND ELEMENT - A piezoelectric sound generating element capable of providing flatter and less fluctuated sound pressure frequency characteristics includes a diaphragm that is formed in a circular plate shape with a circular profile. A piezoelectric element is affixed to the side of a bottom wall portion of the diaphragm. The piezoelectric element has an asymmetric octagonal profile including a pair of long side portions opposing each other, a pair of short side portions opposing each other, and four connecting side portions. | 08-28-2014 |
| 20140270275 | Kinetic Event Detection in Microphones - In one implementation, the output of a microphone is modified based on movement. A circuit or other controller is in communication with a microphone that generates an electrical signal based on sounds waves and a motion sensor. The motion sensor may be coupled to the microphone, coupled to a device including the microphone, or coupled to an object in the vicinity of the microphone. The controller is configured to receive the electrical signal from the microphone and motion data from the motion sensor. The controller is configured to perform a comparison of the motion data to a threshold level and adjust the electrical signal in response to the comparison of the motion data to a threshold acceleration level. | 09-18-2014 |
| 20140270276 | ELECTROMECHANICAL TRANSDUCER AND ELECTROCOUSTIC TRANSDUCER - An electromechanical transducer of the invention comprises a structural unit, an armature, and first and second elastic members. The structural unit includes at least one pair of magnets, a yoke conducting a magnetic flux generated by the magnets, and a coil supplied with an electric signal. The armature has an inner portion disposed to pass through an internal space of the structural unit and first and second outer portions protruding on both sides from the inner portion, and the armature constitutes a magnetic circuit with the structural unit via two regions through which components of the magnetic flux flow in directions opposite to each other in the inner portion. The first and second elastic members connect between the first and second outer portions of the armature and the structural unit, respectively. | 09-18-2014 |
| 20140270277 | SOUNDER ASSEMBLY FOR EXPLOSIVE ENVIRONMENT - An insulated sounder assembly may include: a) a sounder cup having a bottom and a sidewall; b) a piezoelectric element positioned in the bottom of the cup; c) a potting layer within the sounder cup and spaced apart from the piezoelectric element so that the potting layer contacts the cup sidewall for a distance of at least 3 mm around the entire circumference of the cup, and so that a gap exists between the piezoelectric element and the potting layer, with the gap being sufficient to allow vibration of the piezoelectric element in the sounder cup without restriction by the potting layer; and d) an electrical contact wire attached to the piezoelectric element to provide a voltage to the piezoelectric element, wherein the electrical contact wire passes through the potting layer so that at least 3 mm of bare wire is completely embedded in said potting layer. | 09-18-2014 |
| 20140270278 | ACOUSTIC TRANSDUCERS WITH BEND LIMITING MEMBER - The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and a piezoelectric actuator coupled to the diaphragm to cause movement of the diaphragm. In certain aspects, the transducer also includes a member that limits bending of the actuator. | 09-18-2014 |
| 20140270279 | ACOUSTIC TRANSDUCERS WITH RELEASABLE DIAPHRAM - The invention generally relates to acoustic transducers. In certain aspects, the acoustic transducer includes a diaphragm and an actuator releasably coupled to the diaphragm to cause movement of the diaphragm. | 09-18-2014 |
| 20140307897 | ELECTROSTATIC SPEAKER - An electrostatic speaker includes: an oscillator; a first cushioning material layer and a second cushioning material layer; a first electrode and a second electrode; and a first cover layer and a second cover layer. In a second region inside a first region including an outer edge end of a laminated body including a plurality of layers including at least the first cover layer and the second cover layer, two adjacent layers of the plurality of layers included in the laminated body are fixed to each other, and strength at the outer edge end in the first region is higher than strength in the second region. | 10-16-2014 |
| 20140314255 | Acoustic Generator - Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element. | 10-23-2014 |
| 20140328504 | TRANSDUCER WITH PIEZOELECTRIC, CONDUCTIVE AND DIELECTRIC MEMBRANE - This disclosure provides systems, methods and apparatus for microspeaker devices. In one aspect, a microspeaker element may include a deformable dielectric membrane that spans a speaker cavity. The deformable dielectric membrane can include a piezoactuator and a dielectric layer. Upon application of a driving signal to the piezoactuator, the dielectric layer can deflect, producing sound. In some implementations, an array of microspeaker elements can be encapsulated between a glass substrate and a cover glass. Sound generated by the microspeaker elements can be emitted through a speaker grill formed in the cover glass. | 11-06-2014 |
| 20140341403 | OPTICALLY CLEAR DIAPHRAGM FOR AN ACOUSTIC TRANSDUCER AND METHOD FOR MAKING SAME - The present disclosure relates to a diaphragm that may be used with a mechanical-to-acoustical transducer. The diaphragm may include a layer of optically clear film, a damping layer and another layer of optically clear film. The damping layer may be an adhesive. The diaphragm may also comprise two optically clear films, optionally including a damping layer, wherein the films indicate a desired coefficient of linear thermal expansion in one or both of the machine and transverse directions. | 11-20-2014 |
| 20150010176 | APPARATUS AND METHOD FOR PROVIDING A FREQUENCY RESPONSE FOR AUDIO SIGNALS - An apparatus includes a moving mass transducer. The moving mass transducer generates sound by displacement of a surface defined by a piezoelectric element. The piezoelectric element is displaced in response to an interaction of a first signal with a magnetic field. The piezoelectric element is configured to be separately driving by a second signal. | 01-08-2015 |
| 20150023530 | PORTABLE TERMINAL - There is provided a portable terminal capable of acquiring sound information successfully simply by being brought near to or into contact with the ear without the necessity of careful handling. The portable terminal includes at least a vibration member having a first surface exposed to an exterior, a vibration element operative to vibrate the vibration member in response to an electric signal corresponding to sound information, and electronic circuitry that outputs the electric signal, a difference in amplitude between individual places within the first surface of the vibration member in a vibrating state being less than or equal to 60 dB in terms of a ratio of maximum value to minimum value of amplitude. A portable terminal can be obtained that is capable of acquiring sound information successfully simply by being brought near to or into contact with the ear without the necessity of careful handling. | 01-22-2015 |
| 20150023531 | ELECTRONIC DEVICE - According to the present invention, air conduction sound and human body vibration sound (e.g. bone conduction sound) are transmitted to a user without a need for pressing a vibration body itself to an ear. An electronic device | 01-22-2015 |
| 20150030188 | ELECTRONIC DEVICE - Provided is an electronic device including: a piezoelectric element; a vibration plate to which the piezoelectric element is joined for vibration; and a housing to which the vibration plate is joined. Vibration sound, which is transmitted by vibrating a part of a human body, is generated by the vibration plate. The vibration plate includes, in a plan view thereof, a first area including a joining portion with the piezoelectric element and a second area located further away from the joining portion than the first area is, and rigidity in a first area is lower than rigidity in the second area. With the above configuration, sound leakage or the like is reduced, and usability of the electronic device is improved. | 01-29-2015 |
| 20150030189 | ELECTRONIC DEVICE - The content of sound leakage from a vibrating plate that vibrates due to a piezoelectric element is made difficult to recognize. An electronic device ( | 01-29-2015 |
| 20150036846 | SOUND GENERATOR, SOUND GENERATION DEVICE, AND ELECTRONIC APPARATUS - Provided are a sound generator including a frame body, a vibration body provided to the frame body in a state where a tensile force is applied to the vibration body, and a piezoelectric vibration element provided to the vibration body. In the sound generator, when a first direction and a second direction are directions along a main surface of the vibration body and intersect with each other, the tensile force in the first direction and the tensile force in the second direction are different from each other. A sound generation device and an electronic apparatus including the sound generator are also provided. | 02-05-2015 |
| 20150071467 | MICROELECTROMECHANICAL APPARATUS FOR GENERATING A PHYSICAL EFFECT - A microelectromechanical apparatus for generating a physical effect, including an array of moving elements, each coupled to a mechanical support by at least one flexure which is associated with at least one piezoelectric member which is operable to be strained by an electrical field applied to the piezoelectric member, thereby flexing the flexure to which the piezoelectric member is coupled; an electrical wiring, including a group of electrodes, wherein each electrode out of the group of electrodes is coupled to at least one of the piezoelectric members; wherein the electrical wiring is operable to concurrently transfer different sequences of electric fields to different piezoelectric members, thereby controllably inducing movement of moving elements of the array for creating the physical effect; and a motion restriction mechanism for maintaining a maximal motion distance for each of the moving elements when actuated via the corresponding flexure and piezoelectric member. | 03-12-2015 |
| 20150078590 | Membrane Arrangement for a MicroElectromechanical Measuring Transducer and Method for Producing a Membrane Arrangement - The disclosure relates to a micro-electromechanical membrane arrangement with a substrate, which has a multiplicity of recesses on a surface, a first electrically conductive electrode layer, which is arranged on the surface of the substrate and has a multiplicity of first depressions coinciding with the recesses, and an electrically conductive membrane layer, which can be deflected in a direction perpendicular to the active surface of the substrate, is arranged over the first electrode layer and is kept at a distance therefrom by a first distance value. | 03-19-2015 |
| 20150086050 | Chip with a Micro-Electromechanical Structure and Covering Element, and a Method for the Production of Same - A micro-electromechanical chip includes a substrate, a micro-electromechanical structure formed in the substrate, and a covering element that is positioned on a surface of the substrate and that is configured to protect the micro-electromechanical structure from at least one of outside contaminants and mechanical influences. | 03-26-2015 |
| 20150098593 | SOUND RECEIVER AND METHOD FOR MANUFACTURING THE SAME - A sound receiver includes a casing, a circuit portion, a conductive member, a first piezoelectric plate, a second piezoelectric plate, a first conductive transmission portion, and a second conductive transmission portion. The casing has an accommodating portion. The accommodating portion has an opening and a base. The circuit portion is disposed to close upon the opening. The conductive member having a first side and a second side is disposed in the accommodating portion. The first piezoelectric plate is disposed at the first side of the conductive member within the accommodating portion. The second piezoelectric plate is disposed at the second side of the conductive member within the accommodating portion. The first conductive transmission is configured to elastically and electrically connect the base and the first piezoelectric plate. The second conductive transmission is configured to elastically and electrically connect the circuit portion and the second piezoelectric plate. | 04-09-2015 |
| 20150098594 | SPEAKER - A plurality of magnetostrictive elements made of ferrite or the like are arranged in a matrix on an upper surface of a circuit board. On the periphery of each of the magnetostrictive elements, a voice coil is arranged. When current flows to the voice coils, the magnetostrictive elements themselves expand and contract in their center axis direction (height direction), and whereby ultrasonic waves (carrier waves) are emitted into the air from the magnetostrictive elements themselves. Since the magnetostrictive elements made of ferrite or the like are used, power consumption can be reduced, compared with the case of using piezoelectric vibrators. Also, the magnetostrictive elements can be made resistant to damage even if subjected to an impact due to falling or the like. Accordingly, in a parametric speaker using ultrasonic waves as carrier waves, power consumption can be reduced and vibrating elements can be made resistant to impact damage. | 04-09-2015 |
| 20150110309 | ACOUSTIC TRANSDUCER AND PACKAGE MODULE INCLUDING THE SAME - There is provided an acoustic transducer including an electrode substrate having a plurality of holes formed therein and having a first electrode thereon, a diaphragm disposed so as to face the electrode substrate and having a second electrode thereon to form an electric field in a space between the diaphragm and the electrode substrate, and a plurality of protrusions formed on the diaphragm and having the second electrode to form electric fields in the plurality of holes. | 04-23-2015 |
| 20150117682 | SOUND GENERATOR AND SOUND GENERATION SYSTEM - A sound generator includes a piezoelectric vibrator ( | 04-30-2015 |
| 20150117683 | SOUND GENERATOR - A sound generator includes a housing ( | 04-30-2015 |
| 20150117684 | SOUND GENERATOR - A sound generator includes a housing ( | 04-30-2015 |
| 20150131821 | PIEZOELECTRIC VIBRATION ELEMENT, AND PIEZOELECTRIC VIBRATION DEVICE AND PORTABLE TERMINAL USING PIEZOELECTRIC VIBRATION ELEMENT - A piezoelectric vibration element which includes at least a plurality of electrodes and a plurality of piezoelectric layers alternately disposed in a first direction, and performs bending vibration in the first direction so as to change amplitude in a second direction vertical to the first direction by inputting an electric signal, and in which a center of a facing portion in the second direction is provided at a different position from a center of the piezoelectric vibration element in the second direction, the facing portion including a portion in which one of the piezoelectric layers interposed between the electrodes that are disposed so as to be adjacently opposed to each other, and a piezoelectric vibration device and a portable terminal using the piezoelectric vibration element are provided. | 05-14-2015 |
| 20150131822 | Plane-Type Speaker and AV Apparatus - A plane-type speaker where, on one of the main surfaces of an exciter film, there are placed piezoelectric films which are expanded and contracted by sound-releasing driving signals applied thereto. An oscillation plate is secured to the excited film through frame members. The oscillation plate has a flat-plate shape and is secured to the exciter film while having a warped shape such that it is gradually spaced further away from the exciter film, with decreasing distance from the secured ends to a center area, when viewed at a side surface. This realizes a state where the exciter film is pulled outwardly with respect to the secured ends due to bending stresses therein. If sound-releasing driving signals are applied to the piezoelectric films in this state, the exciter film contracts and expands along with the expansion and contraction of the piezoelectric films, thereby causing the oscillation plate to oscillate. | 05-14-2015 |
| 20150131823 | Plane-Type Speaker and AV Apparatus - A plane-type speaker where, on one of the main surfaces of an exciter film, there are placed piezoelectric films which are expanded and contracted by sound-releasing driving signals applied thereto. An oscillation plate is secured to the excited film through frame members. The oscillation plate has a flat-plate shape and is secured to the exciter film while having a warped shape such that it is gradually spaced further away from the exciter film, with decreasing distance from the secured ends to a center area, when viewed at a side surface. This realizes a state where the exciter film is pulled outwardly with respect to the secured ends due to bending stresses therein. If sound-releasing driving signals are applied to the piezoelectric films in this state, the exciter film contracts and expands along with the expansion and contraction of the piezoelectric films, thereby causing the oscillation plate to oscillate. | 05-14-2015 |
| 20150139456 | ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC DEVICE - A purpose is to obtain a frequency characteristic of a good sound pressure. To achieve the purpose, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibrating body, and a resin layer. The piezoelectric element vibrates when an electric signal is input. To the vibrating body, the piezoelectric element is attached. The vibrating body vibrates with the piezoelectric element due to the vibration of the piezoelectric element. The resin layer is arranged to cover surfaces of the piezoelectric element and the vibrating body to which the piezoelectric element is attached. The resin layer is integrated with the vibrating body and the piezoelectric element. Also, to the resin layer, irregularity is provided. | 05-21-2015 |
| 20150139457 | SPEAKER DEVICE AND ELECTRONIC DEVICE - A speaker device ( | 05-21-2015 |
| 20150146895 | ELECTROACTIVE SOUND TRANSDUCER FOIL HAVING A STRUCTURED SURFACE - An electroactive sound transducer foil includes a composite foil made up of at least one carrier foil, at least one first and one second electrode, and at least one piezoelectric layer including an electroactive polymer, the surface of the sound transducer foil including a structuring having different slopes, and the slope of the sound transducer foil surface changing the sign at least twice. | 05-28-2015 |
| 20150304779 | PIEZOELECTRIC ELECTROACOUSTIC TRANSDUCER - A piezoelectric electroacoustic transducer is disclosed. The piezoelectric electroacoustic transducer includes a diaphragm, a piezoelectric element disposed on the diaphragm, an elastic element connected with and around the diaphragm, a frame around the elastic element and being disassembled so as to adjust an inner-frame projected area of the frame, and a buffer interposed between the elastic element and the frame, wherein the frame has an inner-frame projected area less than a planar projected area of the diaphragm, the elastic element, and the buffer, such that the frame always provides a compressive stress to the diaphragm, the piezoelectric element, the elastic element, and the buffer. The piezoelectric electroacoustic transducer may be implemented as a loudspeaker or a microphone. | 10-22-2015 |
| 20150304780 | ELECTROACOUSTIC TRANSDUCER, MANUFACTURING METHOD THEREFOR, AND ELECTRONIC DEVICE UTILIZING SAME - An electroacoustic transducer comprises a plurality of layered piezoelectric vibrator units that are arranged side by side in a direction intersecting a vibrating direction, wherein the plurality of layered piezoelectric vibrator units comprise respectively, a plurality of piezoelectric vibrators with different resonance frequencies, arranged in the vibrating direction in layers with a predetermined space therebetween; a plurality of vibrating members that hold the plurality of piezoelectric vibrators respectively; and a frame that supports edges of the plurality of vibrating members, and the plurality of vibrating members are arranged in the vibrating direction in layers with a predetermined space therebetween such that an area of the each of the plurality of vibrating members increases or decreases monotonically in the vibrating direction. | 10-22-2015 |
| 20150304781 | ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC DEVICE - An acoustic generator according to an embodiment at least includes an exciter, a vibrating plate, a frame body, and a resin material. The exciter is mounted on the vibrating plate, and the vibrating plate is caused to vibrate together with the exciter by the vibration of the exciter. The frame body is provided on an outer peripheral portion of the vibrating body. The resin material is disposed in a space formed with the surface of the vibrating plate on which the exciter is disposed and an inner peripheral surface of the frame body to integrate the vibrating body and the exciter. The resin material is provided also on at least part of a surface other than the inner peripheral surface of the frame body. | 10-22-2015 |
| 20150312681 | Electroacoustic Transducer - An electroacoustic transducer has a piezoelectric layer, which is structured in such a way that, in the case of an alternating electric field applied in one spatial direction, an oscillation mode with oscillations in three spatial directions is excited. | 10-29-2015 |
| 20150319514 | ELECTROACTIVE POLYMER ACTUATED APERTURE - An apparatus ( | 11-05-2015 |
| 20150319536 | Electroacoustic Bandpass Filter Having Smoothed Insertion Loss - A bandpass filter operates with electroacoustically active components. The bandpass filter includes a first transducer segment having a spike in the insertion loss at a first frequency f | 11-05-2015 |
| 20150319537 | Electroacoustic Components and Methods Thereof - An improved electroacoustic component is provided. The component includes a carrier wafer with a passivation layer, a piezoelectric layer above the passivation layer and an interdigitated transducer in an electrode layer on the piezoelectric layer. The component is configured to work with a shear mode. | 11-05-2015 |
| 20150326977 | ACOUSTIC TRANSDUCERS WITH BEND LIMITING MEMBER - Acoustic transducers may, in certain aspects, include a diaphragm and a piezoelectric actuator coupled to the diaphragm to cause movement of the diaphragm. In certain aspects, the transducer also includes a member that limits bending of the actuator. In various embodiments, bend-limiting members may interact with the actuator or a connector that couples the actuator to the diaphragm. | 11-12-2015 |
| 20150334491 | ELECTRONIC DEVICE - According to the present invention, air conduction sound and human body vibration sound (e.g. bone conduction sound) are transmitted to a user without a need for pressing a vibration body itself to an ear. An electronic device | 11-19-2015 |
| 20150373460 | PIEZOELECTRIC-TYPE SPEAKER - A piezoelectric-type speaker is provided for converting electrical signals into sounds capable of being heard by a human ear. The piezoelectric-type speaker includes a housing, a separating portion, a supporting base, a high-pitched speaker and a dynamic low-pitched speaker. The separating portion is disposed at the housing and provided for separating interior spaces of the housing. The supporting base is disposed at the housing. One end of the supporting base is fastened with the separating portion. The high-pitched speaker is formed by a piezoelectric member, and is supported by the other end of the supporting base. The dynamic low-pitched speaker is disposed in the housing. The dynamic low-pitched speaker is disposed at the separating portion and opposite the high-pitched speaker. | 12-24-2015 |
| 20160008851 | METHOD FOR MOLDING PIEZOELECTRIC POLYMER AND MOLDED BODY | 01-14-2016 |
| 20160014525 | PORTABLE PIEZOELECTRIC SPEAKER AND ELECTRONIC DEVICE HAVING THE SAME | 01-14-2016 |
| 20160014526 | ELECTROACOUSTIC TRANSDUCTION FILM | 01-14-2016 |
| 20160014527 | ELECTROACOUSTIC CONVERTER FILM | 01-14-2016 |
| 20160050498 | ACOUSTIC GENERATOR, AND ACOUSTIC GENERATION DEVICE AND ELECTRONIC APPARATUS HAVING THE SAME - An acoustic generator includes: a bimorph piezoelectric element including a stack of a plurality of internal electrodes and a plurality of piezoelectric layers, the bimorph piezoelectric element having a first main face and a second main face opposite the first main face; and a vibration plate joined to the second main face of the bimorph piezoelectric element. The bimorph piezoelectric element includes a region in a side of a first main face and a region in a side of a second main face, and, the plurality of piezoelectric layers constituting the region in the side of the first main face and the plurality of piezoelectric layers constituting the region in the side of the second main face are different from each other in at least one of relative permittivity and density. | 02-18-2016 |
| 20160057545 | Piezoelectric speaker driving system and method thereof - A piezoelectric speaker driving system includes a band sputter, a plurality of gain producers, an adder, a piezoelectric speaker, a sound compensator and a gain-adjusting device. The band sputter receives a first audio signal and splits the first audio signal into band signals. The gain producers gain the band signals respectively. The adder receives the gained band signals to generate a second audio signal. The piezoelectric speaker outputs a sound according to the second audio signal. The sound compensator analyzes a sound pressure level of the sound to generate a control signal. The gain-adjusting device adjusts the gains of the gain producers according to the control signal. | 02-25-2016 |
| 20160088400 | MICROPHONE AND METHOD FOR MANUFACTURING THE SAME - A microphone and method for manufacturing the microphone are provided. The microphone includes a substrate with a penetration aperture, a vibration unit disposed on the substrate to cover the penetration aperture, and a fixed electrode disposed over, and spaced from, the vibration unit. Further, the vibration unit includes a first portion and a second portion disposed on the penetration aperture, and a third portion disposed on the substrate. In addition, the first portion and the third portion are spaced from each other, and the second portion is connected between the first portion and the third portion, and includes a first piezoelectric portion and a second piezoelectric portion. | 03-24-2016 |
| 20160100255 | ELECTRONIC APPARATUS - An electronic apparatus comprises a cover panel, a piezoelectric vibration element located on a rear surface being opposite to an exposed surface of the cover panel, and a drive module driving the piezoelectric vibration element based on a sound signal. The rear surface comprises a first region where the piezoelectric vibration element is disposed. The first region is located closer to a side of the exposed surface than a second region in the rear surface. | 04-07-2016 |
| 20160105749 | SPEAKER WITH EMBEDDED PIEZOELECTRIC TRANSDUCER - In one aspect, a speaker is provided having a coil and a diaphragm assembly coupled to the coil. The diaphragm assembly includes a piezo stiffener plate and a flexible membrane, the piezo stiffener plate including at least one piezo layer and at least one metal layer. The speaker is operable in a human audible frequency operating range and in an ultrasonic frequency operating range. In the ultrasonic frequency operating range, the piezo stiffener plate bends to extend the ultrasonic output beyond the ultrasonic range produced without the use of the piezo stiffener plate. In another aspect, a speaker is provided having a flexible membrane constructed at least partially of a piezo material. The speaker is operable in an ultrasonic frequency operating range wherein the piezo material bends to extend the ultrasonic output beyond the ultrasonic range produced without the use of the piezo material in the membrane. | 04-14-2016 |
| 20160119719 | ELECTROACOUSTIC CONVERTER AND ELECTRONIC DEVICE - In an embodiment, an electroacoustic converter (earphone | 04-28-2016 |
| 20160119720 | ELECTROACOUSTIC CONVERTER AND ELECTRONIC DEVICE - In an embodiment, an electroacoustic converter (earphone | 04-28-2016 |
| 20160119721 | ELECTROACOUSTIC CONVERTER - In an embodiment, an electroacoustic converter has an enclosure, piezoelectric sounding body, electromagnetic sounding body, passage, and wiring members. The piezoelectric sounding body includes a first vibration plate supported directly or indirectly on the enclosure, and a piezoelectric element placed at least on one side of the first vibration plate. The piezoelectric sounding body divides the interior of the enclosure into a first space and a second space. The electromagnetic sounding body has a second vibration plate and is placed in the first space. The passage is provided at the piezoelectric sounding body or around the piezoelectric sounding body, to connect the first space and second space. The wiring members are electrically connected to the piezoelectric element and led out toward the electromagnetic sounding body, from the piezoelectric element, through the first space or second space. | 04-28-2016 |
| 20160142822 | ELECTROACOUSTIC TRANSDUCER - An electroacoustic transducer is provided that combines the properties and advantages of the known concepts of the thickness mode transducer and of the bending transducer with each other. For this purpose, an electroacoustic transducer is provided, which includes a housing and an oscillating structure. The oscillating structure is formed by at least one piezoelectric element, a diaphragm, and an acoustic transmitter. It is provided that the diaphragm is designed as a bending transducer, and the acoustic transmitter is designed as a thickness mode transducer. | 05-19-2016 |
| 20160155926 | ELECTROACOUSTIC TRANSDUCER | 06-02-2016 |
| 20160157020 | ELECTROACOUSTIC TRANSDUCER | 06-02-2016 |
| 20160157021 | ELECTROACOUSTIC TRANSDUCER | 06-02-2016 |
| 20160183006 | PIEZOELECTRIC SPEAKER AND ELECTROACOUSTIC TRANSDUCER | 06-23-2016 |
| 20160198268 | ELECTRONIC APPARATUS | 07-07-2016 |
| 20160255440 | Cosmetic Powder Compositions for Delivering Actives | 09-01-2016 |
| 20170238099 | ELECTRO-ACOUSTIC TRANSDUCER | 08-17-2017 |
| 20170238100 | ELECTRO-ACOUSTIC TRANSDUCER | 08-17-2017 |
| 20190149926 | DIAPHRAGM ELEMENT ARRANGEMENT AND RELATED METHOD | 05-16-2019 |
