Class / Patent application number | Description | Number of patent applications / Date published |
250551000 | Signal isolator | 66 |
20080230727 | PHOTO COUPLER AND METHOD FOR PRODUCING THE SAME - In structures of the typical conventional photo couplers, an unwanted rotation or a dislocation during the manufacturing thereof is occurred during the manufacture of the couplers. The photo coupler according to the embodiment includes a lead frame (first lead frame), a lead frame (second lead frame) having an end section bent toward the lead frame, a light emitting element (first optical device) fixed to the lead frame, a light receiving element (second optical device) fixed to the lead frame so as to face the light emitting element, and an electrically insulating film, provided between the light emitting element and the light receiving element, and including an end section having protruding and contracting sections in plan view. An end section of the lead frame has protruding and contracting sections in plan view. Further, the end section of the electrically insulating film fits in the end section of the lead frame. | 09-25-2008 |
20080251739 | OPTICAL COUPLER PACKAGE - A method is disclosed. The method includes forming a substrate with a leadframe and a molding compound. The molding compound fills internal spaces in the leadframe and forms a dam structure. An optical emitter and an optical receiver are placed on the substrate. An optically transmissive medium is formed between the optical emitter and optical receiver. | 10-16-2008 |
20080265185 | LIGHT EMITTING APPARATUS AND METHOD FOR INSPECTING SAME - A light emitting apparatus includes: a light emitting device with one terminal connected to a power supply terminal; a voltage detector connected between the power supply terminal and a ground terminal; a driver circuit unit connected between an input terminal receiving a signal as input and the ground terminal; a first switch connected between another terminal of the light emitting device and the driver circuit unit; a second switch connected between the input terminal and the other terminal of the light emitting device; and a switch controller. The switch controller is operable to perform an operation mode in which the first switch is connected and the second switch is disconnected in response to an output from the voltage detector having detected that a power supply voltage applied to the power supply terminal is within a range from a first voltage to a second voltage, and to perform an inspection mode in which the first switch is disconnected and the second switch is connected in response to an output from the voltage detector having detected that the power supply voltage is outside the range from the first voltage to the second voltage. | 10-30-2008 |
20080283780 | DEVICE HAVING GALVANIC OPTOCOUPLING - The present disclosure relates to an architecture of a device with galvanic optocoupling of the type having at least one optical source and one optical detector, optically connected by means of an insulation layer that functions to transmission optical signals, and having at least one input terminal and one output terminal, the optical source and the optical detector connected to a respective first and second voltage reference. The optical source is realized by a structure integrated directly above the insulation layer in correspondence with the optical detector, the architecture thus completely realized inside a single integration island. | 11-20-2008 |
20080296520 | OPTICAL COUPLING DEVICE - In one aspect of the present invention, an optical coupling may include a supporting member which has a first surface, a second surface on the opposite side of the first surface, and an opening portion, and which is formed of an insulating material, a first wiring layer provided on the first surface of the supporting member, a second wiring layer provided on the second surface of the supporting member, a light emitting element which is provided on the first surface, and which is connected to the first wiring layer, and at least one portion of which faces the opening portion, a light receiving element which is provided on the second surface, and which is connected to the second wiring layer, and which faces the light emitting element through the opening portion, a light shielding resin provided so as to cover the light emitting element, the light receiving element, and the first wiring layer and the second wiring layer. | 12-04-2008 |
20080302982 | POLARIZER ELEMENTS AND SYSTEMS USING THE SAME - In general, in a first aspect, the invention features an article that includes a plurality of spaced apart ridges extending along a first direction, adjacent ridges being spaced with a period of Λ or less, each ridge comprising a plurality of layers where adjacent layers have different refractive indexes at a first wavelength λ | 12-11-2008 |
20090014669 | Semiconductor relay - The semiconductor relay comprises: an insulated type DC/DC power supply | 01-15-2009 |
20090140179 | SEMICONDUCTOR DIE PACKAGES SUITABLE FOR OPTOELECTRONIC APPLICATIONS HAVING CLIP ATTACH STRUCTURES FOR ANGLED MOUNTING OF DICE - An optocoupler package is disclosed. The package includes a substrate comprising a substrate surface, a first device, and a clip structure attached to the first device. The clip structure and the first device are mounted on the substrate, and the first device is oriented at an angle with respect to the substrate surface. A second device is mounted on the substrate, where the first device is capable of communicating with the second device. | 06-04-2009 |
20090152478 | Arrangement comprising two elements which can be rotatably displaced in respect of one another - Data is to be exchanged between a rotating element and a further element, with the rotating element being rotated by way of a hollow shaft. Light is coupled into torus halves and is reflected into a torus half and onto torus inner walls so often by way of a small opening until it exits at an opening of the other torus half. In a first embodiment, a torus-shaped optical fiber is divided into two torus halves. In another embodiment, hollow tori are used, which are filled with a fluid, namely either with a liquid or with air. | 06-18-2009 |
20100006783 | LIGHT EMITTING DIODE DISPLAY DEVICE - The present disclosure relates to a light emitting diode display device which can prevent a drive switching device from degrading. The light emitting diode display device includes a plurality of pixel cells each having a light emitting diode, a plurality of data lines for transmission of data signal having information on a picture, a plurality of gate lines for transmission of a gate signal having a gate high voltage, a first gate low voltage, and a second gate low voltage having a polarity opposite to the data signal, wherein the gate high voltage, the first gate low voltage and the second gate low voltage having potentials different from one another wherein each of the pixel cells includes a signal transmission switching device for connecting the data line to a node according to the first gate high voltage from the gate line, a drive switching device for controlling an intensity of a drive current being supplied to the light emitting diode according to a signal state of the node, a storage capacitor connected between the node and a source electrode or a drain electrode of the drive switching device, and a control switching device for connecting the gate line to the node in response to the second gate low voltage from the gate line and a control signal from a control line. | 01-14-2010 |
20100006784 | METHOD AND SYSTEM FOR A LIGHT SOURCE ASSEMBLY SUPPORTING DIRECT COUPLING TO AN INTEGRATED CIRCUIT - Methods and systems for a light source assembly supporting direct coupling to a photonically enabled complementary metal-oxide semiconductor (CMOS) chip are disclosed. The assembly may include a laser, a microlens, a turning mirror, reciprocal and/or non-reciprocal polarization rotators, and an optical bench. The laser may generate an optical signal that may be focused utilizing the microlens. The optical signal may be reflected at an angle defined by the turning mirror, and may be transmitted out of the light source assembly to one or more grating couplers in the chip. The laser may include a feedback insensitive laser. The light source assembly may include two electro-thermal interfaces between the optical bench, the laser, and a lid affixed to the optical bench. The turning mirror may be integrated in a lid affixed to the optical bench or may be integrated in the optical bench. | 01-14-2010 |
20100032592 | PHOTO INTERRUPTER AND METHOD MANUFACTURING THE SAME - A method of manufacturing a photo interrupter includes forming a frame including a first frame part and a second frame part which are disposed at an interval to be facing each other, mounting at least one light-emitting element on a first board and attaching the first board to the first frame part of the frame, mounting a light-receiving element on a second board and attaching the second board to the second frame part of the frame, the light-receiving element being mounted on the second board to be facing the light-emitting element so that the light-receiving element receives light emitted from the light-emitting element, and providing a positioning member on the frame by integrally forming the positioning member with the frame. | 02-11-2010 |
20100127193 | ISOLATED HIGH-SPEED DIGITAL INTERFACE FOR VEHICLES - An apparatus and method for providing an isolated high-speed digital interface for communicating high-speed digital data within a vehicle. In architecture, the interface includes one or more input terminals and one or more output terminals. Each output terminal being associated with one of the one or more input terminals without any electrically conductive path existing between the output terminal and the input terminal, and instead the input terminal and the output terminal are coupled to one another by an optical coupling. The present invention can also be viewed as a method that can be broadly summarized by the following steps, providing at least one input terminal for receiving data and providing at least one output terminal. Wherein the output terminal is associated with the one input terminal without any electrically conductive path existing between the output terminal and the input terminal, are coupled to one another by an optical coupling. | 05-27-2010 |
20100155627 | METHODS AND APPARATUSES FOR PERFORMING COMMON MODE PULSE COMPENSATION IN AN OPTO-ISOLATOR - In an opto-isolator, a common mode pulse compensation circuit is provided that senses when a common mode pulse event occurs and that adds current to the LED drive current to compensate for a decrease in the LED drive current caused by the occurrence of the event. The common mode pulse compensation circuit is capable of operating effectively over a very wide range of common mode pulse slopes by automatically adjusting the amount of current that is added to the LED drive current based at least in part on the slope of the sensed common mode pulse. In addition, the common mode pulse compensation circuit is capable of being implemented with LEDs that operate at very low drive currents, which allows the power consumption requirements of the opto-isolator to be reduced. | 06-24-2010 |
20100181506 | OPTOELECTRONIC APPARATUS FOR TRANSMISSION OF AN ELECTRICAL SIGNAL - An optoelectronic apparatus for transmission of an electrical signal via, galvanically isolated by means of a one-piece, translucent, plastic body, an input current circuit. At least one optical transmission element, and an output current circuit, having at least one optical receiving element, wherein the optical transmission element has a principle transmission axis and the optical receiving element a principle receiving axis, which are oriented so as to concide with a shared optical axis. The plastic body has two cavities separated via a partition for accommodating, respectively, the optical transmission element and the optical receiving element, wherein the transmitting element and/or the receiving element are/is placed through the openings so far into the cavities of the plastic body, that, following a case of overvoltage on the transmitting element and/or the receiving element, an insulating air distance and creep path according to an insulation coordination is still present along outer surfaces of the plastic body. | 07-22-2010 |
20100224801 | PHOTO INTERRUPTER - A photo interrupter is provided. The photo interrupter includes a housing and a light emitting/receiving unit. The housing defines a recess portion and has a first engaging portion disposed in the recess portion. The light emitting/receiving unit has a second engaging portion. When the light emitting/receiving unit is disposed in the recess portion, the first engaging portion engages with the second engaging portion. | 09-09-2010 |
20100230621 | PHOTONIC FILTERING OF ELECTRICAL SIGNALS - A filter and a method of filtering a high frequency electrical signal using photonic components is disclosed. The filter has a serially fiber-coupled laser source, a modulator, a filter, and a photodetector. The electrical signal is applied to the modulator. The modulated light propagates through the filter which is constructed to pass not only a modulated sideband, but also at least a fraction of light at the carrier frequency of the laser. The photodetector detects a signal at the beat frequency between the carrier and sideband signals, after both signals have propagated through the filter. As a result, a separate optical branch for light at the carrier frequency is not required, which considerably simplifies the filter construction and makes it more stable and reliable. | 09-16-2010 |
20100270483 | OPTICAL COUPLER - An optical coupler has a first terminal board and a second terminal board, a first conversion element for converting an electrical signal into an optical signal mounted on a surface of a first element mounting section of the first terminal board, a second conversion element for converting an optical signal into an electrical signal mounted on a surface of a second element mounting section of the second terminal board; and a light reflective curved surface formed so as to cover the first conversion element and the second conversion element. The surfaces of the first element mounting section and the second element mounting section have the same orientation. An optical signal emitted from the first conversion element is reflected on the light reflective curved surface, to optically couple the first conversion element and the second conversion element. The second conversion element has a plurality of light receiving cells that are electrically connected in series, arrayed in parallel with one another, and longer in a longitudinal direction than in a width direction. The first conversion element is arranged inside an area sandwiched between two contact lines that are set so as to be in contact with an outline of the second conversion element, and are in parallel with a length direction of the light receiving cells. | 10-28-2010 |
20100327194 | MULTI-BIT USE OF A STANDARD OPTOCOUPLER - A method of indicating multi-bit values using a single optocoupler indicates a first multi-bit value in response to a first range of optocoupler output voltages, and indicates a second multi-bit value in response to a second range of optocoupler output voltages. The first range is different from the second range. | 12-30-2010 |
20100327195 | LOW-POWER OPTOCOUPLER - An embodiment of an optocoupler may provide electrical isolation between signals on a driver side and signals on a receiver side of the optocoupler by generating light signals via a fiber-optic link to the receiver. One embodiment includes driver circuit that may receive an input signal (or a series of input signals) having a specific clock cycle. Instead of driving a light source, such as a light-emitting diode, for the entire duration in which an input signal may be at a high logic level, the LED may be driven with only a pulse to indicate any transitions from high-to-low or from low-to-high. In another embodiment, a receiver circuit may then interpret pulses of differing widths to reconstruct a series of logical signal from only its pulse transitions. By limiting the amount of time in which the LED is on, yet still conveying all underlying data in the input signal, the optocoupler reduces the overall power needed during operation. | 12-30-2010 |
20110057128 | OPTO-ISOLATOR INCLUDING A VERTICAL CAVITY SURFACE EMITTING LASER - The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector. | 03-10-2011 |
20110101255 | OPTICAL TRANSCEIVER - An optical transceiver includes a transmitting side photoelectric converter, a transmitting side circuit board, a receiving side photoelectric converter, a receiving side circuit board, a surface of the transmitting side circuit board being arranged to face a surface of the receiving side circuit board, a lens block disposed between the transmitting side circuit board and the receiving side circuit board, and optically connected to a transmitting side optical fiber and a receiving side optical fiber, and a frame body holding the lens block such that the lens block aligns with the transmitting side photoelectric converter and the receiving side photoelectric converter, and to fix the transmitting side circuit board and the receiving side circuit board at a predetermined distance from each other. | 05-05-2011 |
20110101256 | Output circuit, light-receiver circuit using the same, and photocoupler - An output circuit includes a bias circuit that operates when a power supply voltage equal to or larger than a predetermined voltage is applied, a differential amplifier circuit that outputs signals according to input differential signals upon receiving a bias current or bias voltage generated when the bias circuit is operated, an output stage circuit that receives differential signals according to an output from the differential amplifier circuit and outputs output signals according to the differential signals, the output stage circuit having fewer number of stages of elements connected in series than the bias circuit, and a pull-down circuit that forcibly sets a level of one of the differential signals received by the output stage circuit to a ground voltage to fix the level of the output signals output from the output stage circuit when the bias current or the bias voltage generated by the bias circuit is not supplied. | 05-05-2011 |
20110108747 | OPTOCOUPLER DEVICES - Optocoupler devices and methods for making and using such devices are described. The optocoupler devices contain a light emitting component (a light emitting diode [LED]) and a light receiving component (a phototransistor [PT]) device that are embedded within the substrate, rather than being attached to the surface of the pre-molded substrate. Such a configuration eliminates the bond wires that are often used when the LED and PT are attached on the substrate, improves the electrical performance, and allows the final optocoupler package to be made smaller and thinner. Other embodiments are described. | 05-12-2011 |
20110114858 | Digital input circuit - A digital input circuit includes a pair of input terminals that an input signal of a digital voltage signal is inputted; a photocoupler for transmitting the input signal from the input terminals to an input port of a microcomputer and having one light emitting diode and one phototransistor, wherein the light emitting diode of the photocoupler is connected between the input terminals, a collector of the phototransistor is connected to a positive side of a power supply, and an emitter of the phototransistor is connected to ground via a first resistor; and a bipolar transistor provided between the ground and a second resistor, wherein a collector thereof is connected to the second resistor for pulling up the input port of the microcomputer, an emitter thereof is connected to the ground, and a base thereof is connected to a connection node between the emitter of the phototransistor and the first resistor. | 05-19-2011 |
20110121210 | Digital output circuit - A digital output circuit includes a photocoupler, having one light emitting diode and one phototransistor, for transmitting a digital voltage output signal to the load; an output transistor, having a control terminal, a first terminal and second terminals, for transmitting an output signal from the phototransistor to the load; and a voltage smoothing unit. Further, a first terminal of the phototransistor is connected to a power supply terminal via a first resistor and a second terminal of the phototransistor is connected to the control terminal of the output transistor. A second resistor is connected between the control terminal and the first terminal of the output transistor. The first terminal of the output transistor is connected to the common terminal and the second terminal of the output transistor is connected to the output terminal. The voltage smoothing unit is connected between the first terminal of the phototransistor and the common terminal. | 05-26-2011 |
20110121211 | Galvanic Isolator Having Improved High Voltage Common Mode Transient Immunity - A galvanic isolator having a transmitter die, a receiver die, and a lead frame is disclosed. The transmitter die includes an LED having first and second contacts for powering the LED, and the receiver die includes a photodetector. The lead frame includes first and second transmitter leads, and first and second receiver leads. The transmitter die is bonded to the first lead, the first contact being connected electrically to the first transmitter lead and the second contact being connected to the second transmitter lead. The receiver die is connected to the first and second receiver leads. The LED and the photodetector are positioned such that light generated by the LED is received by the photodetector. The first and second transmitter leads are capacitively coupled to the first receiver lead. The capacitive couplings are characterized by first and second capacitance values that are substantially the same. | 05-26-2011 |
20110174999 | GALVANIC ISOLATION THAT INCORPORATES A TRANSFORMER WITH AN OPTICAL LINK AND THAT CAN BE INTEGRATED ONTO A SINGLE SEMICONDUCTOR SUBSTRATE - Methods and structures provide galvanic isolation for electrical systems using a wide oxide filled trench, and that allows power across the system divide with a transformer, and that transmits data at a high baud rate using an optical link. The system solution allows the integration of all of these elements onto a single semiconductor substrate in contrast to currently available galvanic isolation systems that require multiple individual silicon die that are connected by wire bonds and are relatively slow. | 07-21-2011 |
20110278479 | Optical power transmission system and method having counter-propagating control signal - A system for delivering optical power over optical conduits includes at least one optical power source delivering multiple optical power forms over an optical conduit with a counter propagating optical control signal. | 11-17-2011 |
20110278480 | Optical power transmission system and method having multiple optical power forms - A system for delivering optical power over optical conduits includes delivering more than one optical power form over an optical conduit. | 11-17-2011 |
20110278481 | Optical power transmission system and method having multiple optical power forms with partial free-space transmission - A system for delivering optical power over an optical conduit includes at least one than one optical power source delivering multiple optical power forms at least partially over a free space. | 11-17-2011 |
20120007005 | OPTO-ISOLATOR THAT USES A NONTRANSPARENT HOLLOW TUBE AS THE OPTICAL WAVEGUIDE EXTENDING BETWEEN THE TRANSMITTER AND RECEIVER MODULES OF THE OPTO-ISOLATOR - In an opto-isolator, a nontransparent hollow tube having a smooth inner surface with mirror-like qualities is used as the optical waveguide for coupling optical signals between the transmitter module and the receiver module and for providing electrical transient isolation. | 01-12-2012 |
20120223259 | OPTICAL COUPLING ELEMENT AND METHOD FOR MANUFACTURING THE SAME - An optical coupling element includes a light emitting element and a light receiving element which receives emitted light from the light emitting element. The optical coupling element contains a silicone resin and includes a light transparent resin which covers the light emitting element and the light receiving element and transmits the signal light emitted from the light emitting element to the light receiving element (for example, a specific light transparent gel resin) and a light reflection resin which covers a circumference of the light transparent resin. To the light transparent resin, a dye which absorbs light having a shorter wavelength than a predetermined wavelength range including a light emitting wavelength of the light emitting element is added in a concentration of 0.7% by weight or less. | 09-06-2012 |
20120228529 | CONTACTLESS COUPLING AND METHOD FOR USE WITH AN ELECTRICAL APPLIANCE - The present invention relates to a coupling and various methods of use of the coupling. In one embodiment the invention provides a coupling for use with an appliance operated by a power supply, which coupling allows mounting/dismounting of the appliance without electrical isolation from the supply said coupling comprising: a) a mounting member having a first encapsulated transformer element and suitable controls connectable to the power supply, said member being suitable for fixing to a structure; and b) a holder member engageable with said mounting member, wherein the holder member is suitable for holding or for connecting thereto an appliance, said holder member having other suitable controls and a second encapsulated transformer element able conduct power to an appliance; c) wherein engagement of the first and second members is able i) to cause induction of current in the second encapsulated transformer element enabling powering of an appliance and ii) is able to cause a signal to be carried between the controls and an appliance to control and/or monitor the appliance; and wherein disengagement of the first and second members results in no induction and no carriage of the signal. | 09-13-2012 |
20120280151 | ELECTRICAL ISOLATION DEVICE - The invention relates to an analog isolation device ( | 11-08-2012 |
20120298890 | OPTOCOUPLER CIRCUIT FOR GATE DRIVER - An optocoupler circuit includes a switch connected in parallel with a photo LED, the photo LED having an anode and a cathode. The anode is connected to a power supply via a decoupling capacitor. The optocoupler circuit is arranged so that the switch turns on the photo LED when in the open position. When closed, the switch directs current flow through a series resistor to ground and shunts current flow away from the photo LED to turn off the photo LED. A second capacitor is connected to the cathode of the photo LED. The second capacitor is wired in series with a second switch and a current limiting resistor connected to ground. The first switch and second switch operate in complementary states to prevent the cathode connected capacitor from discharging. The disclosed optocoupler circuit provides the ability to function at increased levels of common mode voltage transients. | 11-29-2012 |
20130221248 | OPTICAL COUPLING DEVICE - An optical coupling device includes a first lead part, a light emitting element mounted on the first lead part, a first wire connected to the first lead part and the light emitting element, a second lead part, a light receiving element fixed to the second lead part, a second wire connected to the second lead part and the light receiving element, and an insulating film configured to allow passage of light emitted from the light emitting element. The insulating film does not make contact with the first lead part, the light emitting element, the first wire, the second lead part, the light receiving element, or the second wire. | 08-29-2013 |
20130240764 | OPTO-ISOLATION CIRCUIT - An opto-isolation circuit ( | 09-19-2013 |
20130256569 | APPARATUS AND METHOD FOR NON-LATCHING, BI-DIRECTIONAL COMMUNICATION OVER AN ELECTRICALLY ISOLATED DATA LINK - An isolation apparatus and method are provided for bi-directional communication over a single wire link without circuit latch up. The isolation is provided by two identical but independent switching circuits designed to eliminate latch up while controlling two optical isolators in a bi-directional mode of operation. | 10-03-2013 |
20130306886 | Input Circuit for Industrial Control with Low Heat Dissipation - An I/O circuit for use with an industrial controller provides an input circuit with low power dissipation through the use of a series connected substantially nonresistance impedance. An AC waveform input activates a light emitting diode (LED) bridge to provide an optical signal which illuminates a photosensitive solid-state switch thereby providing optical isolation between the industrial controller and the controlled process or machine. By using a series connected substantially nonresistance impedance, reduced current demand by the input circuit may be realized, which allows reduced power dissipation. As a result, the same circuit allows receiving input signals over a greater range, such as 120 volts AC and 240 volts AC, and allows significantly smaller components with closer spacing for a more compact design. | 11-21-2013 |
20130313446 | SEMICONDUCTOR DEVICE - A semiconductor device including: a filter circuit to subdivide and output the received signal as a first signal with a relatively low frequency and a second signal with a relatively high frequency; a first channel containing a photocoupler to convey the first signal output from the filter circuit; a second channel containing an isolator to convey the second signal from the filter circuit; and a signal synthesis circuit to sum and output the first signal conveyed by way of a first channel and a second signal conveyed by way of a second channel. | 11-28-2013 |
20130313447 | OPTO-COUPLER - An optoelectronic device is disclosed. The optoelectronic device may be employed as a single or multi-channel opto-coupler that electrically isolates one circuit from another circuit. The opto-coupler may include one or more light guides and an insulative tape that helps define a shape of the one or more light guides. | 11-28-2013 |
20130341537 | OPTOELECTRONIC DEVICE AND METHOD OF MANUFACTURE - An optoelectronic device is disclosed. The optoelectronic device may be employed as a single or multi-channel opto-coupler that electrically isolates one circuit from another circuit. The opto-coupler may include one or more folded leads that establish an enhanced isolation gap. The enhanced isolation gap increases the creepage distance of the opto-coupler and increases operational voltages that can be accommodated by the opto-coupler. | 12-26-2013 |
20140001382 | ELECTRICAL INSULATION CONFIGURATION FOR AN ELECTRICAL DEVICE | 01-02-2014 |
20140027656 | Connector - A connector is provided that includes a housing and an electronic circuit. The housing includes a mating section with a mating contact, a mounting section having a circuit board contact, and a circuit receiving space positioned along an inner surface thereof. The electronic circuit is positioned in the circuit receiving space and connects to both of the mating contact and the circuit board contact. The electronic circuit includes a photocoupler which electrically insulates the mating contact and the circuit board contact from each other and relays a signal in an optical manner. | 01-30-2014 |
20140042344 | FACE-TO-FACE OPTOCOUPLER DEVICE AND METHOD OF MANUFACTURE - An optoelectronic device is disclosed. The optoelectronic device may be employed as a single or multi-channel opto-coupler that electrically isolates one circuit from another circuit. The opto-coupler may include one or more folded leads that establish an enhanced isolation gap. The enhanced isolation gap may include an interruption in the insulation of the opto-coupler between the light source and the light detector. In addition, this interruption may further include a efficiency enhancer, or lens, to direct light emitted from the light source. Accordingly, the creepage distance and operational voltages of the opto-coupler can be increased while maintaining high efficiency levels. | 02-13-2014 |
20140070120 | PHOTOCOUPLER - A photocoupler comprises an input side lead frame; an output side lead frame disposed facing the input side lead frame with a gap therebetween; a light emitting device mounted on a face of the input side lead frame facing the output side lead frame side; a light receiving device mounted on a face of the output side lead frame facing the input side lead frame side, opposite to and having a gap with the light emitting device; and a protrusion disposed on at least a part of an area around the light receiving device on the output side lead frame and being formed of conductive bonding wire or a bump, protruding to the input side lead frame side. | 03-13-2014 |
20140191143 | Optocoupler - An optocoupler is disclosed including a receiving unit, a metal bump, a substrate, a transparent light guiding block, a light emitting unit, and a transmitting unit. The metal bump is formed on the receiving unit and connects to the substrate. The transmitting unit is electrically connected to the light emitting unit, so as to selectively control whether the light emitting unit to emit the light or not. The metal bump is utilized to connect the substrate with the receiving unit, and then the transparent light guiding block is utilized to cover the light emitting unit, so as to simplify the structure of the optocoupler. | 07-10-2014 |
20140197337 | LOW POWER SELF-LIMITING INPUT CIRCUIT - An input circuit for an input module having a plurality of inputs is disclosed. Each input circuit has a reduced number of components, providing for an increased number of inputs within an input module of comparable size to prior art input modules. Alternately, the input module may have a like number of inputs in a reduced size in comparison to prior art input modules. The reduced number of components similarly reduces the power dissipated by each input circuit. | 07-17-2014 |
20140197338 | OPTO-ISOLATOR INCLUDING A VERTICAL CAVITY SURFACE EMITTING LASER - An opto-isolator is disclosed that include a vertical cavity surface emitting laser (VCSEL), a photodetector and a package enclosing the VCSEL and the photodetector. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. | 07-17-2014 |
20140239205 | Optocoupler Arrangement and Input and/or Output Module - An optocoupler arrangement for signal transmission with galvanic separation includes a first optocoupler with a first input path and a first output path, a second optocoupler with a second input path and a second output path, wherein the first and second input paths are arranged in series with a connecting switching device, and wherein an actuation circuit has first and second input signals as inputs, and first, second and third outputs as outputs, and the actuation circuit is configured such that, as a function of a first switching state related to the first and second signal inputs, the connecting switching device is actuated, and with respect to either a second or a third switching state, either a first switching device assigned to the first input path of the first optocoupler or a second switching device assigned to the second input path of the second optocoupler is actuated. | 08-28-2014 |
20140306131 | LIGHT SOURCE ASSEMBLY SUPPORTING DIRECT COUPLING TO AN INTEGRATED CIRCUIT - Methods and systems for a photonically enabled complementary metal-oxide semiconductor (CMOS) chip are disclosed. The CMOS chip may comprise a plurality of lasers, a microlens, a turning mirror, and an optical bench, and may generate optical signals utilizing the lasers, focus the optical signals utilizing the microlens, and reflect the optical signals at an angle defined by the turning mirror. The reflected optical signals may be transmitted into the photonically enabled CMOS chip, which may comprise a non-reciprocal polarization rotator, comprising a latching faraday rotator. The CMOS chip may comprise a reciprocal polarization rotator, which may comprise a half-wave plate comprising birefringent materials operably coupled to the optical bench. The turning mirror may be integrated in the optical bench and may reflect the optical signals to transmit through a lid operably coupled to the optical bench. | 10-16-2014 |
20140353529 | Optical Receiver Method And Apparatus - A method for making an optical receiver assembly that can receive optical signals via an input optical fiber and can generate output electrical signals, including the following steps: providing an open-ended cavity formed of insulating material, such as a ceramic, comprising a base, peripheral sidewalls, and an open end opposite the base, the outside surface of the base defining a first surface and the inside surface of the base defining a second surface; disposing a first conductive region on a portion of the first surface and a second conductive region on a portion of the second surface; mounting, on the first surface, a semiconductor photodetector device having an active region for communicating optically with the input optical fiber, and coupling an electrical output of the photodetector device with the first conductive region; mounting, on the second surface, an amplifier that is electrically coupled with the second conductive region and produces the output electrical signals; and providing at least one conductive via through the thickness of the base and between the first and second conductive regions for coupling the electrical output of the photodetector device with the amplifier. | 12-04-2014 |
20140374629 | POWER MODULE FOR HIGH/LOW VOLTAGE INSULATION - A power module for high/low voltage insulation is provided. The power module includes a first substrate, a second substrate and an insulating substrate. The first substrate includes a first control circuit and a light source, wherein the first control circuit controls the light source to emit light. The second substrate includes a light-sensing part, a second control circuit and a power device. The light-sensing part receives the light of the light source of the first substrate to send a sensing information. The second control circuit correspondingly drives the power device in accordance with the sensing information. The insulating substrate is disposed between the first substrate and second substrate. | 12-25-2014 |
20150014555 | OPTICAL COMMUNICATION DEVICE - An optical communication device includes a light emitting element including a light emitting surface, a first substrate coating the light emitting element, a light receiving element including a light receiving surface, a second substrate coating the light receiving element, a planar optical waveguide, a first reflecting element including a first sloped surface, and a second reflecting element including a second sloped surface. The first substrate includes a first supporting surface. The first supporting surface defines a first light guiding hole spatially corresponding to the light emitting surface. The second substrate includes a second supporting surface. The second supporting surface defines a second light guiding hole spatially corresponding to the light receiving surface. The planar optical waveguide is positioned on the first supporting surface and the second supporting surface. The first reflecting element and the second reflecting element are respectively positioned on two opposite ends of the planar optical waveguide. | 01-15-2015 |
20150041687 | OPTICAL COUPLING DEVICE AND METHOD OF MANUFACTURING OPTICAL COUPLING DEVICE - A first sealing resin seals a space between a light emitting element and an insulating member, and a second sealing resin seals a space between a light receiving element and the insulating member. The first sealing resin includes a plurality of first particles having a refractive index higher than that of the first sealing resin. The content ratio of the first particles in the first sealing resin changes stepwise or continuously as the particles approach the insulating member from the light-emitting element. The content ratio of the first particles in the first sealing resin in a range up to 10 μm from the light emitting element is higher than the content ratio of the first particles in the first sealing resin in a range up to 10 μm from the insulating member. | 02-12-2015 |
20150060706 | Photocoupler - A photocoupler comprises a light emitting element, a light-sensing element, a transparent inner encapsulant body, an outer covering body, and two conductive frames on which. An optically reflective surface is in contact and formed between the dome enclosing portion of the transparent inner encapsulant body and the outer encapsulant body. A portion of the light emitted by the light emitting element is reflected to the light-sensing element through the optically reflective surface, and the other portion of the light emitted from the light emitting element is directly emitting to the light-sensing element through the transparent inner encapsulant body. The present invention applies the optically reflective surface to minimize the overlapping area between the two conductive frames, and reduces the capacitance value, and increases the CMRR in a manner that the photo coupler of the present invention is able to meet the standard of electrical characteristics as required. | 03-05-2015 |
20150083942 | OPTICAL ISOLATOR WITH PRINTED CIRCUIT BOARD ISOLATION - An optical isolator is provided. The optical isolator includes a printed circuit board having a first surface and a second surface opposite the first surface. The printed circuit board has a recess extending only partially through the board. The first photoelement has an active surface and is mounted relative to the first surface of the printed circuit board. A second photoelement has an active surface and is mounted relative to the second surface. The second photoelement is configured to interact with the first photoelement. At least one of the first and second photoelements has its active surface disposed at least partially in the recess. A portion of the printed circuit board is interposed between the first and second photoelements. | 03-26-2015 |
20150333841 | OPTICAL COUPLING CIRCUIT, LIGHT-RECEIVING APPARATUS OF OPTICAL COUPLING CIRCUIT AND SIGNAL PROCESSING DEVICE - A light-emitting unit outputs an optical signal corresponding to an input electric signal. A light-receiving unit is electrically insulated from the light-emitting unit and outputs an electric signal according to the received optical signal as an output signal. In the light-receiving unit, a first light-receiving device outputs an optical current according to the optical signal. A second light-receiving device is provided not to receive the optical signal. A current duplication circuit duplicates a current flowing through the second light-receiving device. A current-voltage conversion circuit converts a current, which is generated by subtracting the current duplicated by the current duplication circuit from a current flowing through the first light-receiving device, into a voltage signal. A comparator output a result of a comparison between the voltage signal converted by the current-voltage conversion circuit and a threshold voltage as the output signal. | 11-19-2015 |
20160043809 | OPTICAL COUPLER - An optical coupler includes an optical transmitting unit and an optical receiving unit in a facing arrangement. The optical transmitting unit includes a power lead having a first die-pad portion, a light emitting element on the first die-pad portion, a ground lead having a second die-pad portion, and an integrated circuit on the second die-pad portion. The integrated circuit has a power pad portion, a light emitting element pad portion, and input pad portions thereon. An inter-center distance between an inner lead of the first input lead and an inner lead of the second input lead is equal to or less than an inter-center distance between an outer lead of the first input lead and an outer lead of the second input lead. | 02-11-2016 |
20160061658 | LIGHT RECEIVING CIRCUIT AND LIGHT COUPLING DEVICE - A light receiving circuit includes a light receiving element, a first transistor that includes a control terminal which is connected to the light receiving element through a first node, a first terminal and a second terminal, a first load circuit that is connected between a power supply potential and a second node connected to the second terminal, and outputs a voltage signal to a third node, wherein the voltage signal is based on a current signal in the light receiving element, a first feedback resistor that is connected between the first node and the third node, a first limiter circuit that is connected in parallel with the first feedback resistor, and limits an increase of voltage at both ends of the first feedback resistor, and a first circuit that is connected between the second node and the reference potential, includes a second transistor which is diode-connected. | 03-03-2016 |
20160087729 | PHOTOCOUPLER WITH PROTRUSION - A photocoupler comprises an input side lead frame; an output side lead frame disposed facing the input side lead frame with a gap therebetween; a light emitting device mounted on a face of the input side lead frame facing the output side lead frame side; a light receiving device mounted on a face of the output side lead frame facing the input side lead frame side, opposite to and having a gap with the light emitting device; and a protrusion disposed on at least a part of an area around the light receiving device on the output side lead frame and being formed of conductive bonding wire or a bump, protruding to the input side lead frame side. | 03-24-2016 |
20160105247 | COMPLEMENTARY METAL OXIDE SEMICONDUCTOR DEVICE WITH III-V OPTICAL INTERCONNECT HAVING III-V EPITAXIAL SEMICONDUCTOR MATERIAL FORMED USING LATERAL OVERGROWTH - An electrical device that includes a first semiconductor device positioned on a first portion of a substrate and a second semiconductor device positioned on a third portion of the substrate, wherein the first and third portions of the substrate are separated by a second portion of the substrate. An interlevel dielectric layer is present on the first, second and third portions of the substrate. The interlevel dielectric layer is present over the first and second semiconductor devices. An optical interconnect is positioned over the second portion of the semiconductor substrate. At least one material layer of the optical interconnect includes an epitaxial material that is in direct contact with a seed surface within the second portion of the substrate through a via extending through the least one interlevel dielectric layer. | 04-14-2016 |
20160111557 | SEMICONDUCTOR DEVICE - A semiconductor device includes a filter circuit to sub-divide and output a received signal as a relatively low frequency first signal and a relatively high frequency second signal, a first channel containing a photocoupler to convey the first signal output from the filter circuit, a second channel containing an isolator, the isolator conveying the second signal output from the filter circuit, and a signal synthesis circuit to sum and output the first signal conveyed by way of the first channel and the second signal conveyed by way of the second channel. The isolator that is mounted in the second channel includes a capacitive coupling type isolator. The photocoupler that is mounted in the first channel contains a light emitting diode to emit light according to the first signal, and a photodiode to receive light from the light emitting diode. The isolator mounted in the second channel contains a capacitor. | 04-21-2016 |
20160118947 | SELF BIASED DUAL MODE DIFFERENTIAL CMOS TIA FOR 400G FIBER OPTIC LINKS - A transimpedance amplifier (TIA) device. The device includes a photodiode coupled to a differential TIA with a first and second TIA, which is followed by a Level Shifting/Differential Amplifier (LS/DA). The photodiode is coupled between a first and a second input terminal of the first and second TIAs, respectively. The LS/DA can be coupled to a first and second output terminal of the first and second TIAs, respectively. The TIA device includes a semiconductor substrate comprising a plurality of CMOS cells, which can be configured using 28 nm process technology to the first and second TIAs. Each of the CMOS cells can include a deep n-type well region. The second TIA can be configured using a plurality CMOS cells such that the second input terminal is operable at any positive voltage level with respect to an applied voltage to a deep n-well for each of the plurality of second CMOS cells. | 04-28-2016 |
20160190379 | SIGNAL OUTPUT CIRCUIT - A signal output circuit includes a signal conversion element, a signal output transistor, a first resistor element, a second resistor element, a diode, a malfunction-prevention transistor, and a capacitance-compensating capacitor. The signal output transistor establishes electrical conduction between two conductive terminals when an on signal is supplied to a conduction control terminal via the signal conversion element. The diode is connected in parallel to the second resistor element in a direction in which current flows between a signal output terminal of the signal conversion element and the conduction control terminal of the signal output transistor when an on signal is outputted to the signal output terminal. The malfunction-prevention transistor establishes electrical conduction between two conductive terminals when a current flows through the second resistor element in a direction opposite the direction of the diode. The capacitance-compensating capacitor is connected in parallel to the second resistor element. | 06-30-2016 |