Class / Patent application number | Description | Number of patent applications / Date published |
310370000 | "U" or "tuning fork" shape | 73 |
20080297008 | TUNING FORK RESONATOR ELEMENT AND TURNING FORK RESONATOR - A tuning fork resonator element that has a base portion, first and second resonating arms extending from the base portion in a first direction, and a support frame sandwiching the first and second resonating arms and being connected to the base portion includes: a first excitation electrode, formed in an area close to a connection portion with the base portion of the support frame, being connected to a mount electrode with a conductive adhesive; a second excitation electrode, formed in at least one of an area sandwiching the first and second resonating arms of the support frame and an area positioned farther than the first and second resonating arms in the first direction, being connected to a mount electrode with the conductive adhesive; and a cut portion of the support frame formed on an external surface of the support frame. | 12-04-2008 |
20080315727 | PIEZOELECTRIC RESONATOR, MANUFACTURING METHOD THEREOF AND LID FOR PIEZOELECTRIC RESONATOR - A piezoelectric resonator includes a piezoelectric resonator element having a resonating arm and a metal film that is formed on the resonating arm; a package including a bottom part on which the piezoelectric resonator element is fixed and a frame wall that surrounds the bottom part, and having an opening above the bottom part; and a lid including a frame in which a through hole is provided and an optically transparent part that has an upper face and a lower face of the frame and is disposed at the through hole, the through hole penetrating a front face and a back face, the lower face of the optically transparent part being disposed so as to oppose the metal film, and the lid closing the opening of the package such that the lid overlaps with the bottom part and the frame wall, the through hole having a curved inner wall face whose curved face is coupled with at least one of the front face and the back face at least one opening edge of the front face and the back face and a vertical inner wall face that is provided vertical to the front face and the back face and in a part of a thickness direction of the frame, and the optically transparent part being provided so as to contact closely with at least a part of the vertical inner wall face and at least a part of the curved inner wall face. | 12-25-2008 |
20090009037 | PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES - The piezoelectric vibrating piece ( | 01-08-2009 |
20090021119 | Angular velocity sensor and manufacturing method thereof - A substrate is made of single crystal silicon and having a tuning folk shape. The substrate includes plural arms extending in parallel with each other and a joint section for connecting respecting ends of the arms with each other. An angular velocity sensor includes a barrier layer containing silicon oxide provided on each of the arms of the substrate, a first adhesion layer containing titanium provided on the barrier layer a first electrode layer containing at least one of titanium and titanium oxide provided on the first adhesion layer, an orientation control layer provided on the first electrode layer, a piezoelectric layer provided on the orientation control layer, a second adhesion layer provided on the piezoelectric layer, and a second electrode layer provided on the second adhesion layer. This angular velocity sensor has a small size and stable characteristics. | 01-22-2009 |
20090021120 | PIEZOELECTRIC GENERATOR WITH OPTIMISED MOTIONAL CAPACITANCES - The tuning fork resonator ( | 01-22-2009 |
20090039739 | Angular velocity sensor and angular velocity sensing device - The present invention provides an angular velocity sensor in which higher sensitivity for sensors is available even with a smaller base portion. The angular velocity sensor includes a fixed portion fixed to the top surface of a sensor element supporting portion of a casing, an upper detection arm and a lower detection arm, each of them being connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the top surface of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion in such a manner as to form a pair of arms with the upper detection arm in between and extending in a direction parallel to the extending direction of the upper detection arm. | 02-12-2009 |
20090058232 | TUNING-FORK TYPE PIEZOELECTRIC VIBRATING DEVICES AND METHODS FOR MANUFACTURING SAME - Piezoelectric vibrating devices are disclosed that include a base formed of a piezoelectric material, at least two vibrating arms extending in a predetermined direction from an edge of the base, and grooves defined in the vibrating arms. A first metal film comprising a single layer of at least one of Cr, Ni, and Ti is formed at least in the grooves for use as driving electrodes. Also disclosed are methods for manufacturing such devices. | 03-05-2009 |
20090102327 | Quartz crystal unit, quartz crystal oscillator having quartz crystal unit and electronic apparatus having quartz crystal oscillator - A quartz crystal unit comprising a case having an interior space and a mounting portion in the interior space, and a quartz crystal resonator having a base portion and first and second vibrational arms, the quartz crystal resonator being vibratable in a flexural mode, a capacitance ratio r | 04-23-2009 |
20090115294 | PIEZOELECTRIC RESONATOR ELEMENT, PIEZOELECTRIC RESONATOR, AND ACCELERATION SENSOR - A piezoelectric resonator element includes: a resonating arm extending in a first direction and cantilever-supported; a base portion cantilever-supporting the resonating arm; and an excitation electrode allowing the resonating arm to perform flexural vibration in a second direction that is orthogonal to the first direction. In the piezoelectric resonator element, the resonating arm includes an adjusting part adjusting rigidity with respect to a bend in a third direction that is orthogonal to the first and second directions. | 05-07-2009 |
20090127983 | TUNING FORK TYPE PIEZOELECTRIC RESONATOR ELEMENT AND TUNING FORK TYPE PIEZOELECTRIC RESONATOR - A tuning fork type piezoelectric resonator element includes: a base including a pair of cuts provided opposite from each other and a constricted part located between the pair of cuts, a pair of resonator arms extending from the base, and an excitation electrode provided to each of the pair of resonator arms. When the pair of resonator arms vibrate at an inherent resonance frequency f | 05-21-2009 |
20090160295 | PIEZOELECTRIC OSCILLATOR AND METHOD OF THE SAME - A piezoelectric oscillator which can conduct fine trimming adjustment and adjust frequencies highly precisely, particularly with no use of an expensive laser trimming apparatus with a small spot diameter, and a method of the same are provided. The method includes: a first step wherein a first spot train is formed on a mass adjustment film at a pitch smaller than the diameter of a film removal spot matched with the spot diameter of laser, and a second step wherein a train space to the first spot train is adjusted in accordance with the target frequency of a tuning fork crystal vibrating piece to form a second train and after, and these steps are in turn conducted, whereby fine trimming adjustment is performed. | 06-25-2009 |
20090167118 | PIEZOELECTRIC VIBRATING PIECES, PIEZOELECTRIC DEVICES, AND METHODS FOR MANUFACTURING SAME - Piezoelectric vibrating pieces are disclosed made of a piezoelectric material to be mounted in a package. A representative piece includes a base formed of a piezoelectric material, having first and second ends, extending between the ends in a length direction, and having a designated width. The piece includes at least a pair of vibrating arms extending in the length direction from one end of the base, and a pair of supporting arms extending partially in a width direction from between the first and second ends of the base. The supporting arms further extend in the length direction outboard of the base and vibrating arms, and include an adhesive region at the tips of the supporting arms. The adhesive regions are used for mounting the piece to a package. Whereas the tips of the supporting arms do not extend beyond the tips of the vibrating arms, the axial length of supporting arms is greater than the length of the vibrating arms. | 07-02-2009 |
20090212668 | PIEZOELECTRIC VIBRATING PIECE, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC APPARATUS AND RADIOWAVE TIMEPIECE AND METHOD OF FABRICATING PIEZOELECTRIC VIBRATING PIECE - To achieve small-sized formation by shortening a total length after ensuring a length of a base portion capable of sufficiently reducing vibration leakage, there is provided a piezoelectric vibrating piece | 08-27-2009 |
20090218917 | PIEZOELECTRIC VIBRATION ELEMENT AND PIEZOELECTRIC DEVICE - A piezoelectric vibration element having a favorable drive level characteristic for miniaturization, and a piezoelectric oscillator. The piezoelectric vibration element includes a base made of a piezoelectric material, a plurality of vibration arms extended from the base, a long groove formed along a longitudinal direction of a main surface of each of the plurality of vibration arms, and an exciting electrode provided inside the long groove. A center position in a width dimension of the long groove is decentered in a minus X-axis direction from a center position of an arm width dimension. | 09-03-2009 |
20090236950 | Manufacturing method of tuning-fork type quartz crystal resonator - There is disclosed a manufacturing method of a tuning-fork type quartz crystal resonator, in which a simple step can just be added to the existing manufacturing process to prevent generation of short-circuit at a crotch portion and largely improve yield. | 09-24-2009 |
20090289530 | PIEZOELECTRIC VIBRATING PIECE AND PIEZOELECTRIC DEVICE - Piezoelectric vibrating pieces are disclosed. An exemplary piece includes a base and at least a pair of vibrating arms connected to the base. The vibrating arms extend from one end of the base in a first direction. A vibrating root portion is situated between the vibrating arms. A pair of supporting arms extend, outboard of the vibrating arms, in the first direction from the one end of the base. Respective supporting root portions are situated between each vibrating arm and its outboard supporting arm, at the same position (denoted, e.g., K | 11-26-2009 |
20090289531 | PIEZOELECTRIC RESONATOR - Embodiments of the present disclosure are directed to a piezoelectric resonator. The resonator can have a base defining at least a first base portion and a second base portion and two or more vibrating arms projecting from the first base portion, the first vibrating arm being substantially parallel to the second vibrating arm. The resonator can define a generally planar first main surface and a generally planar second main surface defined by the base and the first and second vibrating arms wherein the first main surface is generally parallel to the second main surface. At least one groove can be formed in at least one of the first and second main surfaces of each of the first and second vibrating arms. The resonator can further have at least one vibration isolation arm projecting from the base, the vibration isolation arm being approximately perpendicular to the two or more vibrating arms. | 11-26-2009 |
20100013360 | SILICON RESONATOR OF THE TUNING-FORK TYPE - The invention relates to a silicon resonator ( | 01-21-2010 |
20100072862 | Inertial sensor with dual cavity package and method of fabrication - Inertial sensor having a body with first and second cavities on opposite sides thereof, a sensing element in the first cavity, electronic circuitry in the second cavity, electrical conductors interconnecting the sensing element and the circuitry, and leads connected electrically to the circuitry and extending from the body for mounting the sensor and making connections with the circuitry. | 03-25-2010 |
20100079040 | PIEZOELECTRIC DEVICES HAVING IMPROVED IMPACT RESISTANCE - An exemplary piezoelectric vibrating device has a lid plate, a chip plate including a tuning-fork type vibrating piece surrounded by an outer frame, and a package base arranged where the chip plate is sandwiched between the lid plate and package base, and the three layers are bonded together. The tuning-fork type piezoelectric vibrating piece is connected to the outer frame by supporting arms. A base-movement buffer having a predetermined height in the X-direction extends from the inner edge surface of the outer frame toward a side edge of the base. The base-movement buffer has a height in the X-direction that is proportional to the length from the base-movement buffer to a point at which the tuning-fork type piezoelectric vibrating piece is coupled to the outer frame. | 04-01-2010 |
20100084949 | TUNING-FORK-TYPE PIEZOELECTRIC VIBRATING PIECE AND METHOD OF MANUFACTURING SAME - Tuning-fork-type crystal vibrating pieces are disclosed that have a base and a pair of vibrating arms extending from one side of the base in a designated longitudinal direction. A root portion is situated between the vibrating arms, and includes a first taper surface. Extending outboard of the vibrating arms from respective sides of the base are respective supporting arms that extend in the designated direction. Between each supporting arm and the respective vibrating arm is a respective supporting-arm root portion. Each supporting-arm root portion has a second taper surface in the thickness direction of the base. | 04-08-2010 |
20100096953 | PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES COMPRISING SAME - An exemplary piezoelectric vibrating piece comprises a base formed of a piezoelectric material; and a pair of vibrating arms extending from one end of the base in a designated direction; wherein the vibrating arm comprises an arm portion in which only the inner side slopes as it becomes narrower to the distal end and a hammer-head portion that is formed wider than the arm portion at the distal end of the vibrating arms. | 04-22-2010 |
20100096954 | PIEZOELECTRIC VIBRATING PIECES, FRAMES, AND DEVICES - Piezoelectric vibrating pieces are disclosed that have a base and a pair of vibrating arms extending from one end of the base in a designated direction. A respective groove is defined in each of the upper and lower surfaces of each vibrating arm. The grooves extend in the designated direction and have a first width. Each groove includes a respective rib feature having a second width that is narrower than the first width. A piezoelectric frame includes the piezoelectric device and an outer frame surrounding the device. A piezoelectric device includes the piezoelectric vibrating piece or piezoelectric frame, a lid, and a base. | 04-22-2010 |
20100096955 | PIEZOELECTRIC VIBRATION PIECE AND PIEZOELECTRIC DEVICE - A piezoelectric vibration piece includes a base made of a piezoelectric material; a plurality of vibration arms which is integrally formed with the base and extends in parallel; elongate grooves which are formed along longitudinal directions of the vibration arms; and excitation electrodes which include inner electrodes disposed in the elongate grooves and side electrodes disposed in side surfaces facing the inner electrodes, wherein widening portions in which the widths of the vibration arms are widened toward the base at a joint between the vibration arms of the base are formed, and the side electrodes are led to principal surfaces and side surfaces of the widening portions. | 04-22-2010 |
20100164331 | FLEXURAL VIBRATION ELEMENT AND ELECTRONIC COMPONENT - A flexural vibration element includes: a plurality of vibrating arms provided in parallel with each other; a connecting part connecting the vibrating arms; and one central supporting arm extending between the vibrating arms from the connecting part in parallel with the vibrating arms at equal distance from the arms. In the flexural vibration element, the connecting part has a groove formed on each of front and rear surfaces thereof, and the groove is provided in an area of the connecting part in which compressive stress and tensile stress due to flexural vibration of the vibrating arms alternately occur at a vibrating arm side and an opposite side of the vibrating arm side, in a width direction of the vibrating arms. | 07-01-2010 |
20100164332 | Piezoelectric vibrating pieces, and piezoelectric vibrators and oscillators comprising same - Piezoelectric vibrating pieces are disclosed that include a base portion and first and second vibrating arms extending in a longitudinal direction from the base portion. Each vibrating arm has first and second main surfaces, a first groove on the first main surface, and a second groove on the second main surface. The grooves extend in the longitudinal. By adjusting the length and shapes of at least the first grooves relative to each other, the rigidity of the vibrating arms can be balanced and adverse effects of deformed regions between the vibrating arms caused by anomalous etching can be reduced. | 07-01-2010 |
20100171397 | FLEXURAL VIBRATION ELEMENT AND ELECTRONIC COMPONENT - A flexural vibration element includes: a vibration element body composed of a plurality of vibrating arms provided in parallel, a connecting part connecting the vibrating arms, and one central supporting arm extending between the vibrating arms from the connecting part in parallel with the vibrating arms at equal distance from the arms; and a frame body disposed outside the vibration element body. In the flexural vibration element, the vibration element body is supported by the frame body at an end part, which is opposite to the connecting part, of the central supporting arm. | 07-08-2010 |
20100201229 | Tuning-Fork Type Piezoelectric Vibrating Piece, Piezoelectric Frame, Piezoelectric Device, and a Manufacturing Method of Tuning-Fork Type Piezoelectric Vibrating Piece and Piezoelectric Frame - A tuning-fork type crystal vibrating piece ( | 08-12-2010 |
20100207495 | FLEXURAL RESONATOR ELEMENT AND FLEXURAL RESONATOR - A flexural resonator element includes a base body and a beam with a groove and a through-hole, the beam being extended in a Y direction from the base body and flexurally vibrating in an X direction orthogonal to the Y direction, the groove being formed on a surfaces of the beam perpendicular to a Z direction orthogonal to the X direction and the Y direction, and the through-hole having a smaller width in the X direction than a width of an opening of the groove in the X direction and penetrating from an inner surface of the groove formed on the surface of the beam to a surface of the beam opposite to the surface of the beam having the groove. | 08-19-2010 |
20100308698 | Electronic apparatus - The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least one quartz crystal oscillator. Also, the at least one oscillator comprises a quartz crystal oscillating circuit comprising an amplification circuit and a feedback circuit. The feedback circuit is constructed by a flexural mode, quartz crystal tuning fork resonator or a length-extensional mode quartz crystal resonator and for example, the quartz crystal tuning fork resonator comprising tuning fork tines and tuning fork base that are formed integrally, is shown with novel shape and electrode construction. Also, the quartz crystal tuning fork resonator, capable of vibrating in a fundamental mode and having a high frequency stability can be provided with a small series resistance and a high quality factor, even when the tuning fork resonator is miniaturized. In addition, from a relationship of an amplification rate and a feedback rate, an output signal of the quartz crystal oscillating circuit having an oscillation frequency of the fundamental mode vibration for the quartz crystal tuning fork resonator can be provided with the high frequency stability. | 12-09-2010 |
20100308699 | ELECTRONIC APPARATUS - The electronic apparatus comprises a display portion and a quartz crystal oscillator at least, and said electronic apparatus comprises at least one quartz crystal oscillator. Also, the at least one oscillator comprises a quartz crystal oscillating circuit comprising an amplification circuit and a feedback circuit. The feedback circuit is constructed by a flexural mode, quartz crystal tuning fork resonator or a length-extensional mode quartz crystal resonator and for example, the quartz crystal tuning fork resonator comprising tuning fork tines and tuning fork base that are formed integrally, is shown with novel shape and electrode construction. Also, the quartz crystal tuning fork resonator, capable of vibrating in a fundamental mode and having a high frequency stability can be provided with a small series resistance and a high quality factor, even when the tuning fork resonator is miniaturized. In addition, from a relationship of an amplification rate and a feedback rate, an output signal of the quartz crystal oscillating circuit having an oscillation frequency of the fundamental mode vibration for the quartz crystal tuning fork resonator can be provided with the high frequency stability. | 12-09-2010 |
20100327707 | FLEXURAL-MODE TUNING-FORK TYPE QUARTZ CRYSTAL RESONATOR - A flexural-mode tuning-fork type quartz crystal resonator includes a proximal portion, a pair of vibrating arm portions, and a plurality of first concave portions. The vibrating arm portions project in a direction from the proximal portion. The first concave portions are formed into groove shapes in the upper and lower principal surfaces of the proximal portion, and extend in the widthwise direction perpendicular to the longitudinal direction of the pair of vibrating arm portions. The first concave portions formed in the upper principal surface of the proximal portion and those formed in the lower principal surface of the proximal portion are arranged at a predetermined interval not to face each other. | 12-30-2010 |
20110018403 | PIEZOELECTRIC VIBRATING REED, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, RADIO-CONTROLLED CLOCK, AND METHOD FOR MANUFACTURING PIEZOELECTRIC VIBRATING REED - Providing a piezoelectric vibrating reed which is capable of decreasing variation in the amount of etching residue as much as possible and suppressing influence of vibration loss on the vibration characteristics as much as possible. A piezoelectric vibrating reed | 01-27-2011 |
20110062831 | STIFFNESS-ENHANCED SURFACE-MOUNTED PIEZOELECTRIC DEVICES - Surface-mounted piezoelectric devices are disclosed, of which an exemplary device includes a tuning-fork type piezoelectric vibrating piece having a base portion and a pair of vibrating arms extending from the base portion. The device includes a package defined by a wall. The package includes a cavity accommodating the tuning-fork type piezoelectric vibrating piece and at least one columnar body situated between the vibrating arms in the cavity. | 03-17-2011 |
20110062832 | Quartz crystal unit and manufacturing method of the same and manufacturing method of electronic apparatus - A quartz crystal unit comprising a quartz crystal tuning fork resonator capable of vibrating in a flexural mode of an inverse phase and having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork tines connected to the quartz crystal tuning fork base, an electrode being disposed on each of two of side surfaces of each of the first and second quartz crystal tuning fork tines so that the electrode disposed on each of two of the side surfaces of the first quartz crystal tuning fork tine has an electrical polarity opposite to an electrical polarity of the electrode disposed on each of two of the side surfaces of the second quartz crystal tuning fork tine, a motional capacitance C | 03-17-2011 |
20110089788 | PIEZOELECTRIC RESONATOR ELEMENT, PIEZOELECTRIC RESONATOR, AND ACCELERATION SENSOR - A piezoelectric resonator element includes: a resonating arm extending in a first direction and cantilever-supported; a base portion cantilever-supporting the resonating arm; and an excitation electrode allowing the resonating arm to perform flexural vibration in a second direction that is orthogonal to the first direction. In the piezoelectric resonator element, the resonating arm includes an adjusting part adjusting rigidity with respect to a bend in a third direction that is orthogonal to the first and second directions. | 04-21-2011 |
20110109205 | VIBRATION DEVICE AND ELECTRONIC DEVICE - A vibration device includes: a vibrating reed including a base having a notch, a plurality of vibrating arms extending from the base, and each including an arm section, a weight section, and a groove section, and a support section, wherein a mechanical resonant frequency f of the vibrating reed is higher than a thermal relaxation frequency f | 05-12-2011 |
20110181156 | TUNING-FORK RESONATOR WITH GROOVES ON PRINCIPAL SURFACES - A resonator having a base part; and a resonating arm that performs flexing vibration, the resonating arm part has two principal surfaces, a first groove provided on the one principal surface, a second groove provided in juxtaposition with the first groove on the other principal surface, a third groove provided in juxtaposition with the first groove and provided nearer the base part side than the first groove on the other principal surface, and a fourth groove provided in juxtaposition with the second groove and provided nearer the base part side than the second groove on the principal surface. The sum of a depth of the first and second groove part and a sum of a depth of the third and fourth groove part are larger than a distance between the one principal surface and the other principal surface. | 07-28-2011 |
20110215680 | RESONATOR ELEMENT, RESONATOR, OSCILLATOR, AND ELECTRONIC DEVICE - A resonator element includes: a base section; and at least one resonating arm formed so as to extend from the base section, and having a flexural vibrating section, wherein the flexural vibrating section includes a pair of principal surfaces formed along a direction in which the resonating arm performs a flexural vibration, and outer side surfaces intersecting with the principal surfaces of the resonating arm, the flexural vibrating section is provided with at least three groove sections, the groove sections are formed on both or either one of the principal surfaces in a direction intersecting with the principal surfaces, and at least a part or the whole of an outer wall formed of the outer side surface and the groove section and at least a part or the whole of an inner wall formed of the groove sections adjacent to each other are electrically vibrated in a flexural manner. | 09-08-2011 |
20110221311 | PIEZOELECTRIC VIBRATING PIECES AND PIEZOELECTRIC DEVICES COMPRISING SAME - An exemplary tuning-fork type piezoelectric vibrating piece has a rectangular base having upper and lower main surfaces and a pair of vibrating arms extending longitudinally from the base. The vibrating arms also have the upper and lower main surfaces. Each main surface of each vibrating arm defines a respective vibrating-arm groove extending longitudinally into the base. Each main surface of the base has at least one respective step-side surface situated outboard, in an X-axis direction, of each vibrating-arm groove. Each step-side surface is parallel with the respective vibrating-arm groove. A first electrode is situated on the vibrating-arm grooves of the first vibrating arm and on the at least one respective step-side surface on each main surface. A second electrode is situated on the vibrating-arm grooves of the second vibrating arm and on the at least one respective step-side surface on each main surface. The first and second electrodes are energized with different electrical polarities. | 09-15-2011 |
20110221312 | VIBRATOR ELEMENT, VIBRATOR, SENSOR, AND ELECTRONIC APPARATUS - A vibrator element includes: a base portion; a vibrating arm that extends in a first direction from the base portion, has a width in a second direction perpendicular to the first direction in the plan view, and has a thickness in a third direction perpendicular to the first direction and the second direction; and an inter digital transducer, in which electrode fingers are arranged in the first direction, disposed at least one of a first surface, which is perpendicular to the third direction, and a second surface, which faces the first surface, of the vibrating arm, wherein the vibrating arm is vibrated in the third direction by stretching or contacting the vibrating arm in the first direction by using an electric field in the first direction that is generated by the inter digital transducer. | 09-15-2011 |
20120038251 | FLEXURAL VIBRATION ELEMENT AND ELECTRONIC COMPONENT - A flexural vibration element includes: a plurality of vibrating arms provided in parallel with each other; a connecting part connecting the vibrating arms; and one central supporting arm extending between the vibrating arms from the connecting part in parallel with the vibrating arms at equal distance from the arms. In the flexural vibration element, the connecting part has a groove formed on each of front and rear surfaces thereof, and the groove is provided in an area of the connecting part in which compressive stress and tensile stress due to flexural vibration of the vibrating arms alternately occur at a vibrating arm side and an opposite side of the vibrating arm side, in a width direction of the vibrating arms. | 02-16-2012 |
20120212109 | VIBRATING PIECE MANUFACTURING METHOD AND VIBRATOR MANUFACTURING METHOD - A vibrating piece manufacturing method includes: (a) preparing a supporting body having first and second surfaces, the first and second surfaces defining a thickness while being directed toward opposite directions, the supporting body including a base and a plurality of arms, the arms extending side-by-side in a direction orthogonal to a direction of the thickness from the base, a lower electrode film being disposed on the first surface of each of the arms, a piezoelectric film being disposed on the lower electrode films, at least one upper electrode film being disposed on the piezoelectric film, at least a part of the second surface of each of the arms being an exposed area; and (b) etching the exposed area of the second surface so as to reduce the thickness to reduce flexural rigidity of the arms with respect to the thickness direction. | 08-23-2012 |
20120326571 | BENDING VIBRATION PIECE, METHOD FOR MANUFACTURING THE SAME AND ELECTRONIC DEVICE - A double-side tuning fork-type bending vibration piece having a basal part, a pair of drive vibration arms, a pair of detection vibration arms, drive electrodes and detection electrodes includes adjustment films of a metallic material or the like formed in connecting areas between the vibration arms and the basal part. The adjustment films are formed in such a way as to cover an area of tapered portions formed in connecting parts between the drive vibration arms and the basal part, an area of the basal part near the tapered portions and an area of the drive vibration arms. While monitoring a detection current outputted from the detection electrodes when the drive vibration arms are excited in driving mode, the adjustment films are partly deleted by laser irradiation so that the detection current becomes 0. | 12-27-2012 |
20130020915 | TUNING FORK-TYPE PIEZOELECTRIC RESONATOR PLATE AND TUNING FORK-TYPE PIEZOELECTRIC RESONATOR - A tuning fork-type piezoelectric resonator plate has a resonator blank comprising a pair of vibrating leg portions and a base portion from which the leg portions protrude. The pair of leg portions are arranged in parallel protrudingly from one end face of the base portion, and a pronged portion is formed between the pair of leg portions in an intermediate position in a width direction of the one end face of the base portion. The base portion has a pair of through holes along the one end face of the base portion, and on another end face side opposite to the one end face of the base portion, a joining region that joins to an external portion. The pair of through holes are specially positioned and have special wall surface configurations. | 01-24-2013 |
20130026886 | FLEXURAL MODE RESONATOR ELEMENT, RESONATING DEVICE, AND ELECTRONIC APPARATUS - A flexural mode resonator element includes: a vibration arm extending from a base end toward a tip; a base joined to the vibration arm at the base end; and supporting arms arranged on both sides of the base in a width direction perpendicular to an extending direction of the vibration arm and joined to the base, wherein the base has a reduced cross-section portion disposed along the extending direction of the vibration arm between a joint portion with the vibration arm and a joint portion with the supporting arms, and the reduced cross-section portion is disposed so as to satisfy a relationship 2×W | 01-31-2013 |
20130076210 | PIEZOELECTRIC VIBRATION REED, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC INSTRUMENT, AND RADIO TIMEPIECE - A piezoelectric vibration reed which is capable of inhibiting vibrations of a vibrating arm portion in the thickness direction and inhibiting the increase in CI value and a vibration leak, a piezoelectric vibrator, an oscillator, an electronic instrument, and a radio timepiece using the piezoelectric vibration reed is provided. A piezoelectric vibration reed includes: a pair of vibrating arm portions arranged side by side; groove portions formed on both main surfaces of the vibrating arm portions and extending in the Y direction (the longitudinal direction) of the vibrating arm portions; a base portion connecting the pair of vibrating arm portions; and the groove portions are each formed in the interior thereof with a rib extending from a wall surface on a −Y side (proximal end side) to a +Y side (distal end side). | 03-28-2013 |
20130076211 | Piezoelectric Vibration Reed, Piezoelectric Vibrator, Oscillator, Electronic Instrument, and Radio Timepiece - There is provided a piezoelectric vibration reed including a pair of vibrating arm portions arranged in parallel to each other and a base portion integrally fixing proximal end portions in the longitudinal direction of the pair of vibrating arm portions, wherein the pair of vibrating arm portions is formed with first groove portions positioned on the side of the proximal end portions of the vibrating arm portions and second groove portions positioned on the side of distal end portions of the vibrating arm portions with respect to the first groove portions on main surfaces, the width of the first groove portions along the width direction orthogonal to the longitudinal direction of the vibrating arm portions on the main surfaces of the vibrating arm portions is formed to be smaller than the second groove portions, and reinforcing ribs projecting from bottom surfaces of the second groove portions are formed in the second groove portions. | 03-28-2013 |
20130082576 | METHOD OF MANUFACTURING PIEZOELECTRIC VIBRATION REED, PIEZOELECTRIC VIBRATION REED, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC INSTRUMENT, AND RADIO TIME PIECE - A method of manufacturing a piezoelectric vibration reed is provided. The piezoelectric vibration reed includes a pair of vibrating arm portions and a base portion. The pair of vibrating arm portions is disposed in parallel to each other. The base portion is configured to integrally support proximal end portions of the pair of vibrating arm portions in a longitudinal direction of the vibrating arm portions. The method of manufacturing the piezoelectric vibration reed forms a slit-shaped notched portion at a crotch portion located between the proximal end portions of the pair of vibrating arm portions. | 04-04-2013 |
20130154444 | TUNING FORK QUARTZ CRYSTAL RESONATOR - A tuning fork quartz crystal resonator includes a base, a first resonating arm, and a second resonating arm. The base has a generally planar fifth main surface and a generally planar sixth main surface opposite to each other, and has a fifth side surface and a sixth side surface opposite to each other. The first resonating arm is connecting to one side of the base. The second resonating arm is connecting to the same side of the base. A recess is formed on the fifth main surface, and the recess is sized and configured such that a first width near the first resonating arm and the second resonating arm is greater than a second width away from the first resonating arm and the second resonating arm. | 06-20-2013 |
20130162110 | PIEZOELECTRIC VIBRATOR AND METHOD OF MANUFACTURING THE SAME - There is provided a piezoelectric vibrator including: a base portion; a pair of arm portions extending from the base portion in parallel to each other; first recess portions formed in a length direction in upper surfaces of the pair of arm portions; and second recess portions formed in the length direction in lower surfaces of the pair of arm portions, wherein in a cross section of the pair of arm portions in a length-thickness direction, the first recess portions and the second recess portions may be disposed to be offset and spaced apart from one another by a predetermined interval in a width direction of the pair of arm portions. A piezoelectric vibrator having low resistance and high quality coefficient can be implemented, and thus, a stable frequency can be provided. | 06-27-2013 |
20130169116 | QUARTZ CRYSTAL UNIT, QUARTZ CRYSTAL OSCILLATOR AND ELECTRONIC APPARATUS - A quartz crystal unit comprising a quartz crystal tuning fork resonator having a quartz crystal tuning fork base, and first and second quartz crystal tuning fork tines, at least one groove being formed in at least one of opposite main surfaces of each of the first and second quartz crystal tuning fork tines, each of a length of the at least one groove and an overall length of the quartz crystal tuning fork resonator being determined so that a series resistance R | 07-04-2013 |
20130169117 | TUNING FORK QUARTZ CRYSTAL RESONATOR - A tuning fork quartz crystal resonator includes a base, a first resonating arm, and a second resonating arm. The base has a generally planar fifth main surface and a generally planar sixth main surface opposite to each other, and has a fifth side surface and a sixth side surface opposite to each other. The first resonating arm is connecting to one side of the base. The second resonating arm is connecting to the same side of the base. A concave of continuous curved surface is formed one each on the fifth side surface and the sixth side surface of the base respectively. | 07-04-2013 |
20130241364 | FLEXURAL VIBRATION ELEMENT AND ELECTRONIC COMPONENT - A flexural vibration element according to a first aspect of the invention includes: a vibration element body composed of a plurality of vibrating arms provided in parallel, a connecting part connecting the vibrating arms, and one central supporting arms extending between the vibrating arms from the connecting pert in parallel with the vibrating arms at equal distance from the arms and a frame body disposed outside the vibration element body. | 09-19-2013 |
20130270970 | FLEXURAL RESONATOR ELEMENT, RESONATOR, OSCILLATOR, AND ELECTRONIC DEVICE - A crystal resonator element include a pair of resonating arms extending from a base, the resonating arms includes a groove, a slope portion is formed in a connection portion of the resonating arms to the base so that a distance between the groove and the outer edge of each of the resonating arms increases as it approaches the base from the resonating arms, and a non-electrode region which extends over a range of areas from a connection portion connected to a first side surface formed along the longitudinal direction of the groove and a connection portion connected to a second side surface facing the first side surface with a bottom portion disposed there between and in which excitation electrodes are not formed is provided in the groove in at least a part of the bottom portion positioned in the slope portion. | 10-17-2013 |
20140015381 | OSCILLATION PIECE, OSCILLATOR, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOBILE OBJECT - An oscillation piece includes a first oscillation arm and a second oscillation arm, a first base that connects ends of the first oscillation arm and the second oscillation arm on one side to each other and a second base that connects ends of the first oscillation arm and the second oscillation arm on the other side to each other, and weight films provided on each of the first oscillation arm and the second oscillation arm. The drive electrodes are disposed in positions where the amount of distortion produced in the first oscillation arm and the second oscillation arm is maximized, and the weight films are disposed in positions where the amount of distortion produced in the first oscillation arm and the second oscillation arm is minimized. The oscillation frequency of the oscillation piece can be precisely adjusted by removing part of the weight films. | 01-16-2014 |
20140028158 | PIEZOELECTRIC VIBRATING STRIP, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, AND RADIO TIMEPIECE - A piezoelectric vibrating strip, a piezoelectric vibrator, an oscillator, an electronic device, and a radio timepiece, in which the CI value can be reduced further while preventing a vibrating arm portion from vibrating in a second warp mode. The piezoelectric vibrating strip includes a plurality of parallel vibrating arm portions in a width direction, a base portion couples base ends of the vibrating arm portions, and a groove portion resides in at least one of a main face and a back face of the vibrating arm portion and extends from proximate the base end toward a free end of the vibrating arm portion. A break portion divides the groove portion and suppresses warp deformation of the vibrating arm portion in a second warp mode between a vibrating node portion of the vibrating arm portion proximate the base end and a vibrating node portion proximate the free end. | 01-30-2014 |
20140077664 | VIBRATOR ELEMENT, VIBRATOR, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A gyro element as a vibrator element fulfills the relationship: |fd−fy1|>|fd−fy2|, where fd is a drive vibrational frequency of first through fourth drive vibration arms, fy1 is a y1-mode vibrational frequency of a y1 mode, in which a base section and the first through fourth drive vibration arms vibrate in the same direction along a first direction (a y-axis direction) in which the first drive vibration arm extends, and fy2 is a y2-mode vibrational frequency of a y2 mode in which the base section vibrates along the first direction and the first through fourth drive vibration arms vibrate along the first direction in an opposite direction to a direction in which the base section vibrates. | 03-20-2014 |
20140111065 | PIEZOELECTRIC VIBRATING STRIP, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE, AND RADIO TIMEPIECE - A piezoelectric vibrating strip includes a pair of vibrating arm portions in parallel with a central axis therebetween, and a base portion integrally cantilevering base end portions of the pair of vibrating arm portions in a length direction. Each of the pair of vibrating arm portions has a first groove portion and a second groove portion in a main face, the first groove portion being placed closer to a leading end portion in the length direction of the vibrating arm portions and having a groove width along a width direction orthogonal to the length direction and a thickness direction of the vibrating arm portion. The second groove portion is closer to the base end portion than the first groove portion and has a groove width along the width direction. The groove width ratio of the second groove portion to the first groove portion is between 0.4 and 1.0. | 04-24-2014 |
20140152153 | PIEZOELECTRIC RESONATING DEVICE, MANUFACTURING METHOD THEREOF, PIEZOELECTRIC RESONATOR, AND PIEZOELECTRIC OSCILLATOR - A piezoelectric substrate includes rod-shaped resonating arms; a base portion that connects one set of end portions of the respective resonating arms; weight portions which are formed on the other end portions of the respective resonating arms and which have a width larger than that of the respective resonating arms; and groove portions which are formed on each of the front and rear surfaces along the center line of vibration of the respective resonating arms. The piezoelectric substrate also includes excitation electrodes which are formed on each of the front and rear surfaces of the respective resonating arms including the inner side of the respective groove portions. A plurality of frequency adjustment slits extending in a straight line form along the longitudinal direction of the respective resonating arms are formed on the respective weight portions so as to penetrate through the front and rear surfaces of the weight portions. | 06-05-2014 |
20140239776 | VIBRATOR ELEMENT, VIBRATOR, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A tuning fork type vibrator element, as a vibrator element, includes a base formed on a plane including a first axis and a second axis orthogonal to the first axis, a connection portion extending in a first axis direction from the base, with a thickness thereof being smaller than that of the base and a vibrating arm extending in the first axis direction from one end portion of the connection portion, with a thickness thereof being the same as that of the connection portion, in which the vibrating arm performs flexural vibration along a vertical direction with respect to the plane, and in which the connection portion is provided such that a relationship between a length L2 in the first axis direction of the connection portion and a length L1 in the first axis direction of the vibrating arm falls within a range of L1/15≦L2≦L1. | 08-28-2014 |
20140265736 | RESONATOR ELEMENT, RESONATOR, OSCILLATOR, ELECTRONIC APPARATUS, AND MOVING OBJECT - A resonator element includes a base portion and a pair of vibrating arms that are provided integrally with the base portion, are aligned in an X-axis direction, and extend in a Y-axis direction from the base portion. Each of the vibrating arms includes an arm portion and a wide hammerhead that is located on the free end side of the arm portion and has a greater length in the X-axis direction than the arm portion. Assuming that the length of the vibrating arm in the Y-axis direction is L and the length of the hammerhead in the Y-axis direction is H, the relationship of 1.2%09-18-2014 | |
20140319975 | VIBRATOR ELEMENT, VIBRATOR, OSCILLATOR, AND ELECTRONIC APPARATUS - A quartz crystal vibrator element having the weight section is provided with the intermediate weight section formed to have an arm width W1 larger (thicker) than the arm width W of the vibrating arm section and smaller (thinner) than the arm width W2 of the tip weight section, thereby making the intermediate weight section follow the vibration (the amplitude) of the vibrating arm section. Further, the tip weight section formed to have an arm width W2 larger (thicker) than the arm width W1 of the intermediate weight section is provided, thereby making the tip weight section follow the vibration (the amplitude) of the vibrating arm section and the intermediate weight section. Therefore, the vibration characteristics of the vibrating arm section can be stabilized. | 10-30-2014 |
20140375177 | RESONATOR ELEMENT, RESONATOR, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A resonator element includes: a base portion including a first end surface that faces a first direction and a second end surface that faces a direction opposite to the first direction, a first vibrating arm that is provided integrally with the base portion and is connected to the first end surface; and a second vibrating arm that is provided integrally with the base portion along the first vibrating arm and is connected to the first end surface. When the shortest distance between the first end surface and the second end surface is Wb and an effective width between the shortest distance Wb and the base portion is We, 0.81≦Wb/We≦1.70 is satisfied. | 12-25-2014 |
20140375178 | RESONATOR ELEMENT, RESONATOR DEVICE, ELECTRONIC APPARATUS, MOVING OBJECT, AND METHOD OF MANUFACTURING RESONATOR ELEMENT - A resonator element has a base part, vibrating arms having first principal surfaces and second principal surfaces in front-rear relationships with each other and extending from the base part, and side surfaces connected to the first principal surfaces and the second principal surfaces on ends of the vibrating arms, and the side surfaces are slopes having tilts with respect to perpendicular lines of the first principal surfaces or the second principal surfaces and provided from the first principal surfaces to the second principal surfaces, and crystal faces. | 12-25-2014 |
20150022061 | RESONATOR ELEMENT, RESONATOR, OSCILLATOR, ELECTRONIC DEVICE, AND MOVING OBJECT - In a resonator element, when a width of each of arm portions of vibrating arms along an X-axis direction is set to W1, a width of each of two portions with a groove interposed therebetween, along the X-axis direction, in a principal surface of the vibrating arm is set to W3, and 2×W3/W1 is set to η, the relation of 14.2%<η<100% is satisfied. | 01-22-2015 |
20150022062 | QUARTZ CRYSTAL UNIT, QUARTZ CRYSTAL OSCILLATOR AND ELECTRONIC APPARATUS - In a quartz crystal unit, the unit comprising a case, a quartz crystal tuning fork resonator and a lid, the resonator having a tuning fork base, and first and second tuning fork tines, each of the first and second tuning fork tines having a first side surface and a second side surface opposite the first side surface, the first side surface of the first tuning fork tine confronting the second side surface of the second tuning fork tine; at least one groove having a plurality of surfaces including a first surface being formed in at least one of first and second main surfaces of each of the first and second tuning fork tines so that only the first surface of the at least one groove is directly opposite the first side surface of the corresponding tuning fork tine and a width of the at least one groove is greater than or equal to a distance in the width direction of the at least one groove measured from an outer edge of the at least one groove to an outer edge of the corresponding one of the first and second tuning fork tines and less than 0.07 mm. | 01-22-2015 |
20150061467 | PIEZOELECTRIC PIECE FOR PIEZOELECTRIC VIBRATOR AND MANUFACTURING METHOD THEREOF - The present invention presents a piezoelectric piece for a piezoelectric vibrator and a manufacturing method thereof. The piezoelectric piece for a piezoelectric vibrator in accordance with an embodiment of the present invention includes: a base; and a vibrating arm connected to the base and having a groove formed therein. Here, one surface inside the groove includes: a first slope extended from an upper portion of the groove in a lower direction so as to have a first angle; and a second slope extended from a lower portion of the first slope in a lower direction so as to have a second angle that is greater than the first angle, and a rate of a depth of the first slope for a depth of the groove is greater than or equal to 0.5 and less than or equal to 1. | 03-05-2015 |
20150381143 | RESONATOR ELEMENT, METHOD FOR MANUFACTURING RESONATOR ELEMENT, RESONATOR, GYRO SENSOR, ELECTRONIC APPARATUS, AND MOVING OBJECT - To improve durability against impact, a quartz crystal resonator element includes a recess in a plan view. The quartz crystal resonator element further includes a first principal surface and a second principal surface that are front and rear surfaces facing away from each other and a side surface disposed between the first principal surface and the second principal surface, and the side surface is formed of flat surfaces and curved surfaces formed by dry etching and alternately arranged. The quartz crystal resonator element preferably has a base and at least one resonating arm extending from the base. | 12-31-2015 |
20160028370 | RESONATOR ELEMENT, MANUFACTURING METHOD FOR RESONATOR ELEMENT, RESONATOR, ELECTRONIC DEVICE, AND MOVING OBJECT - To realize a resonator element capable of obtaining sufficient electric field efficiency and securing a satisfactory element characteristic, a resonator element of the invention includes a base section and a pair of resonating arms extending from the base section. The resonator element includes recesses having a curved surface shape respectively on two side surfaces (surfaces crossing a direction in which the resonating arms resonate) of the resonating arm. | 01-28-2016 |
20160072473 | VIBRATING DEVICE - A vibrating device having a number 2N (N is an integer equal to 2 or larger) of tuning fork arms extending in a first direction are arranged side by side in a second direction. Phases of flexural vibrations of the number N of tuning fork arms positioned at a first side of an imaginary line A, which passes a center of a region in the second direction where the number 2N of tuning fork arms are disposed and which extends in the first direction, are symmetric to phases of flexural vibrations of the number N of tuning fork arms positioned at a second side of the imaginary line opposite the first side. | 03-10-2016 |
20160126923 | VIBRATOR ELEMENT, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, MOVING OBJECT, AND METHOD OF MANUFACTURING VIBRATOR ELEMENT - A vibrator element includes drive vibrating arms extending from an end of a base section, the drive vibrating arms are each provided with an obverse surface, a reverse surface disposed on an opposite side to the obverse surface, and a side surface connecting the obverse surface and the reverse surface to each other, a tilted section facing toward the obverse surface is disposed at least a part of the side surface, and there are disposed a first drive electrode and a second drive electrode obtained by bisection with an electrode separation section disposed in the tilted section. | 05-05-2016 |
20160182012 | TUNING FORK VIBRATOR | 06-23-2016 |