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Piezoelectric patents



      
           
This page is updated frequently with new Piezoelectric-related patent applications. Subscribe to the Piezoelectric RSS feed to automatically get the update: related Piezoelectric RSS feeds. RSS updates for this page: Piezoelectric RSS RSS


Transducer assembly for an imaging device

Two-photon endoscopic scanning assembly for inflammatory disease detection

Eardrum supported nanomembrane transducer

Date/App# patent app List of recent Piezoelectric-related patents
09/11/14
20140257109
 Method for producing composite piezoelectric body, method for producing ultrasound probe, composite piezoelectric body, ultrasound probe and ultrasound diagnostic imaging apparatus patent thumbnailMethod for producing composite piezoelectric body, method for producing ultrasound probe, composite piezoelectric body, ultrasound probe and ultrasound diagnostic imaging apparatus
A method for producing a composite piezoelectric body includes: forming a composite piezoelectric body by filling a non-conductive polymer between a plurality of piezoelectric materials arranged in an array state at predetermined intervals, and polishing one surface of the composite piezoelectric body, from which surface at least the piezoelectric materials and the polymer are exposed, by using an abrasive film in which an abrasive particle is applied to a base film.. .
09/11/14
20140257107
 Transducer assembly for an imaging device patent thumbnailTransducer assembly for an imaging device
The present disclosure provides a transducer assembly. The transducer assembly includes a flex circuit.
09/11/14
20140255985
 Two-photon endoscopic scanning assembly for inflammatory disease detection patent thumbnailTwo-photon endoscopic scanning assembly for inflammatory disease detection
An endscopic imaging device is described that achieves longitudinal axis (z-axis) scanning into a tissue or sample, using a piezoelectric microactuator. In some configurations, additional lateral (xy-plane) scanning is also achieved, to allow for the creation of full three-dimensional imaging, ex vivo or in vivo.
09/11/14
20140254856
 Eardrum supported nanomembrane transducer patent thumbnailEardrum supported nanomembrane transducer
A flexible membrane of piezoelectric material sized to be supported by and to conform to the eardrum. Electrodes on the membrane allow the membrane to function as an audio transducer stimulating the eardrum with an audio signal or detecting audio signals at the eardrum.
09/11/14
20140254329
 Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece patent thumbnailPiezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece
A piezoelectric vibrating piece is provided including: a pair of vibrating arm sections; a base section which is provided between the pair of vibrating arm sections; and connecting sections which connect base end sections of the pair of vibrating arm sections and a base end section of the base section, in which the vibrating arm sections have bending points and the vibrating arm sections extend in a direction away from the base section from the base end sections of the vibrating arm sections to the bending points, and the vibrating arm sections extend along the base section from the bending points to leading end sections of the vibrating arm sections.. .
09/11/14
20140254328
 Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece patent thumbnailPiezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece
A piezoelectric vibrating piece includes: a pair of vibrating arm sections which are disposed at a distance away from each other in a width direction of a base section; the base section to which each base end of the pair of vibrating arm sections is connected; and a support arm section that is connected to the base section between the pair of vibrating arm sections and extends from the base section to the same side as the pair of vibrating arm sections, in which convex sections are formed continuous with side surfaces of roots of the vibrating arm sections and side surfaces of the base section.. .
09/11/14
20140253641
 Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and method for manufacturing piezoelectric element patent thumbnailLiquid ejecting head, liquid ejecting apparatus, piezoelectric element, and method for manufacturing piezoelectric element
A flow channel substrate has pressure chambers, and the pressure chambers communicate with nozzle openings configured to eject liquid. Each of piezoelectric elements on the flow channel substrate has a piezoelectric layer, a pair of electrodes, and a wiring layer coupled to the electrodes.
09/11/14
20140253619
 Ink jet head and ink jet printing apparatus with driving channels and dummy channels patent thumbnailInk jet head and ink jet printing apparatus with driving channels and dummy channels
An ink jet head includes a plurality of nozzles and a piezoelectric member provided with driving channels for storing ink. Each of the driving channels communicates a respective one of the nozzles.
09/11/14
20140253435
 In-air ultrasonic rangefinding and angle estimation patent thumbnailIn-air ultrasonic rangefinding and angle estimation
An apparatus for determining location of a moveable object in relation to an input device includes an array of one or more piezoelectric micromachined ultrasonic transducer (pmut) elements and a processor. The array is formed from a common substrate.
09/11/14
20140253272
 Electrostatically tunable magnetoelectric inductors with large inductance tunability patent thumbnailElectrostatically tunable magnetoelectric inductors with large inductance tunability
An electrostatically tunable magnetoelectric inductor including: a substrate; a piezoelectric layer; and a magnetoelectric structure comprising a first electrically conductive layer, a magnetic film layer, a second electrically conductive layer, and recesses formed so as to create at least one electrically conductive coil around the magnetic film layer; with a portion of the substrate removed so as to enhance deformation of the piezoelectric layer. Also disclosed is a method of making the same.
09/11/14
20140253253
Resonator element, resonator, oscillator, electronic apparatus, and moving object
A resonator element includes a piezoelectric substrate that includes a vibration portion, and a thick portion which is integrally formed with an outer edge excluding a partial outer edge in an outer edge of the vibration portion and which is thicker than the vibration portion, and a pair of excitation electrodes that are respectively provided on a first main surface and a second main surface of a vibration region which are in front and rear relationships. In addition, the piezoelectric substrate includes first and second beam portions that are provided along a fourth side of the vibration portion..
09/11/14
20140252919
Piezoelectric device
A piezoelectric device includes a piezoelectric vibrating piece, a lid portion, and a base portion. The piezoelectric vibrating piece includes a vibrating portion, a framing portion surrounding the vibrating portion, an excitation electrode on the vibrating portion, and an extraction electrode on the framing portion.
09/11/14
20140252918
Piezoelectric power generating device
A piezoelectric power generating device that includes a piezoelectric element having a first surface and a second surface opposite the first surface, a stopper, and a lever. The stopper has a first contact surface that is in contact with the first surface.
09/11/14
20140252917
Laminated piezoelectric element and multi-feed detection sensor
A laminated piezoelectric element that includes a piezoelectric element layer and a matching layer. The piezoelectric element layer is configured to have a plurality of piezoelectric layers and a plurality of electrode layers laminated together.
09/11/14
20140252915
Thin film fabrication of rubber material with piezoelectric characteristics
The present invention is related to a thin film fabrication of a rubber material with piezoelectric characteristics and a manufacturing method thereof. The present invention is developed by utilizing polymer casting, multilayer stacking, surface coating, and micro plasma discharge processes.
09/11/14
20140252119
Synthetic jet actuator equipped with a piezoelectric actuator and a viscous seal
A synthetic jet ejector (201) is provided which includes a housing (203). A blade (205) is disposed in the housing which has a first fixed end (207) and a second movable end (209), and which is driven by an actuator to trace out a first volume as its free end moves between a first apex and a second apex.
09/11/14
20140252098
Vehicles shock absorber
An optical based authentication device that is attachable to a security document having a substrate. The authentication device includes: a piezoelectric material layer for generating an electric field in response to mechanical stress; and an optically responsive layer directly attached to the piezoelectric material layer, the attached layers being absent a direct electrical connection, the optically responsive layer being operable between a first state and a second state having different ocular perceptions.
09/11/14
20140251981
Switch control module with piezoelectric element and electric device employing same
A switch control module for an electric device is provided. The switch control module includes a substrate and at least one piezoelectric element.
09/11/14
20140251701
High voltage converters for electrostatic applications
A wall-crawling robot or other electroadhesive device can include a battery or other low voltage power source driving a motor that provides a primary device function, a voltage convertor adapted to convert the low voltage to a high voltage using the motor output, and electrodes configured to apply the high voltage to produce an electrostatic force between the electroadhesive device and a foreign substrate. The electrostatic force maintains a current position of the electroadhesive device relative to the foreign substrate, and the voltage convertor is separate from the primary function of the electroadhesive device.
09/11/14
20140250985
Sensing sensor and sensing device using piezoelectric resonator
A sensing sensor includes a crystal element having a first excitation electrode, a second excitation electrode, and a common electrode, an adsorbing layer, a wiring board, and a channel forming member. The crystal element is secured to the wiring board so as to form a space at one surface side of the first vibrating region and the second vibrating region.
09/11/14
20140250647
Method for fabricating piezoelectric device
A method for fabricating a piezoelectric device that includes a piezoelectric resonator to be mounted on a solder applied over a surface of a substrate. The piezoelectric resonator includes a metal case and at least a pair of lead terminals extracted from the metal case.
09/04/14
20140249419
Method for manufacturing ultrasound probe and ultrasound diagnostic imaging apparatus
A method for manufacturing an ultrasound probe which includes a piezoelectric element for transmitting and receiving ultrasound waves and an acoustic matching layer provided by lamination of two or more matching materials on a front surface of the piezoelectric element, the method including forming at least one of the two or more matching materials from a thermosetting resin and a filler for adjusting an acoustic impedance; and bonding the two or more matching materials with an adhesive having a viscosity of 10 pa·s or less at 25° c.. .
09/04/14
20140248581
Device for loosening, insertion and removal of dental implants
A device for inserting a threaded dental implant (i) in a patients jawbone as well as for loosening and removing a threaded dental implant (i) mounted and possibly osseointegrated in the alveolus jaw-bone of a patient. An ultrasonic vibration actuator, e.g.
09/04/14
20140247633
Intrinsic adaptive and autonomic piezotransformer circuits
An intrinsic piezoelectric transformer circuit a piezoelectric transformer circuit is provided that has a primary side component including first and second electrodes, a secondary side component including first and second electrodes, and at least one tertiary component including first and second electrodes. A power bridge is provided which includes one or more switches, each switch has a gate terminal that is directly connected to the second electrode of the tertiary component of the piezoelectric transformer.
09/04/14
20140247231
Touch panel and method of forming the same
A touch panel comprises a plurality of basic sensing-units arranged in a matrix. The basic sensing-unit comprises a pressure-sensing transistor and a selection transistor.
09/04/14
20140246956
Volume wave resonators on micromachined vertical structures
A bulk wave piezoelectric resonator operating at a predetermined frequency includes a substrate block, having a plane face, a first thickness and consisting of a first material, a resonant plate having a length, width and second thickness, and consisting of a second piezoelectric material, first and second metal electrodes at least partly covering the resonant plate on each side and partly facing each other. The resonant plate is fixed perpendicularly in the vicinity of the plane face of the substrate block so that the width of the resonant plate and the first thickness of the substrate block have the same direction, and the first material, the second material, the first thickness of the block of substrate, the length, the width, the second thickness of the resonant plate are configured for trapping bulk waves at the operating frequency of the resonator and for producing a plane-plane type bulk wave piezoelectric resonator..
09/04/14
20140246614
Piezoelectric valve based on linear actuator
A piezoelectric valve has a body with an input passage and an output passage each configured to connect to a fluid flow system, a flow control member movable with respect to the valve seat between a fully open position and a closed position and a piezoelectric motor directly connected to the flow control member. The piezoelectric motor has a piezoelectric resonator in which two orthogonal vibrational modes across a length and a width of the piezoelectric resonator are excited, a working element and one or more contact sites providing frictional contact between the working element and the piezoelectric resonator.
09/04/14
20140246305
Method of fabricating rare-earth element doped piezoelectric material with various amounts of dopants and a selected c-axis orientation
A method of fabricating a rare-earth element doped piezoelectric material having a first component, a second component and the rare-earth element. The method includes: providing a substrate; initially flowing hydrogen over the substrate; after the initially flowing of the hydrogen over the substrate, flowing the first component to form the rare-earth element doped piezoelectric material over a surface of a single target, the target comprising the rare-earth metal in a certain atomic percentage; and sputtering the rare-earth element doped piezoelectric material from the target on the substrate..
09/04/14
20140245996
Multi-layer piezoelectric element, and piezoelectric actuator, injection device, and fuel injection system provided with the same
There are provided a multi-layer piezoelectric element in which an increase of oxygen vacancies in an electric-field concentration part of piezoelectric layers is suppressed and a decrease of an amount of displacement is suppressed, as well as to provide a piezoelectric actuator, an injection device and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body composed of piezoelectric layers and internal electrode layers which are stacked on each other, and a resin which evolves oh− when being heated.
08/28/14
20140241550
Pezoelectric sound element
A piezoelectric sound generating element capable of providing flatter and less fluctuated sound pressure frequency characteristics includes a diaphragm that is formed in a circular plate shape with a circular profile. A piezoelectric element is affixed to the side of a bottom wall portion of the diaphragm.
08/28/14
20140241132
Piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece
A piezoelectric vibrator is provided in which a piezoelectric vibrating piece is accommodated in a package, the piezoelectric vibrating piece including: a pair of vibrating arm sections; a base section to which each base end of the pair of vibrating arm sections is connected; and a support arm section that is connected to the base section between the pair of vibrating arm sections and extends from the base section to the same side as the vibrating arm sections, in which the piezoelectric vibrating piece is supported within the package in mount sections provided in the support arm section, and in which the mount sections are provided in a region which is defined between a position of which a distance from an end section of the base section opposite to the side where the support arm section is connected to the side of a leading end of the support arm section is 25% of a width dimension of the base section along the width direction and a position of which the distance is 65% of the width dimension.. .
08/28/14
20140240838
Etalon and etalon device
An etalon has a pair of transparent components; a ring-shaped piezoelectric member which is provided between the pair of transparent components, which is bonded to the pair of transparent components, and which is provided with metal films on the surfaces which face the transparent component sides; and the external connecting terminals which are provided on the transparent components and which are connected to the metal films.. .
08/28/14
20140240405
Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and ultrasonic sensor
A liquid ejecting head which includes a piezoelectric element which includes a first electrode, a piezoelectric layer which is provided on the first electrode, and on which a plurality of piezoelectric films are laminated, a second electrode which is provided on the piezoelectric layer, and a plurality of active units which are interposed between the first electrode and the second electrode, and a pressure generating chamber which communicates with nozzle openings which eject liquid, and in which a pressure fluctuation is generated by the piezoelectric element, in which a plurality of grooves with inner faces facing the first electrode side are formed on a side surface of the piezoelectric layer on each interface of each of the piezoelectric films along a first direction and a second direction which cross a third direction which goes from the first electrode to the second electrode.. .
08/28/14
20140240404
Passivation of ring electrodes
An inkjet device includes a pumping chamber bounded by a wall, a piezoelectric layer disposed above the pumping chamber, a ring electrode having an annular lower portion disposed on the piezoelectric layer. A moisture barrier layer covers a remainder of the piezoelectric layer over the pumping chamber that is not covered by the annular lower portion of the ring electrode..
08/28/14
20140240403
Liquid ejecting head and liquid ejecting apparatus
A liquid ejecting head includes a flow channel forming substrate having pressure generation chambers communicating with a nozzle opening and arranged in parallel along a lateral direction. A piezoelectric element is provided on one surface of the flow channel forming substrate in correspondence to the pressure generation chamber, and has a first electrode, a piezoelectric layer provided on the first electrode and a second electrode provided on the piezoelectric layer.
08/28/14
20140239774
New processing method for grain-oriented lead-free piezoelectric na0.5bi0.5tio3-batio3 ceramics exhibiting giant performance
Textured ceramic compositions having improved piezoelectric characteristics as compared with their random counterparts are provided. Methods of making the compositions and devices using them are also included.
08/28/14
20140239773
Piezoelectric device and electronic apparatus
A piezoelectric device includes an insulating substrate, a piezoelectric vibration device that is mounted on a device mounting pad, a metal lid member that seals the piezoelectric vibration device in an airtight manner, an external pad that is arranged outside the insulating substrate, an oscillation circuit, a temperature compensation circuit, and a temperature sensor. The lid member and the temperature sensor or the lid member and the ic component are connected to each other so as to be heat-transferable, and a heat transfer member having thermal conductivity higher than that of the material of the insulating substrate is additionally included..
08/28/14
20140239771
Piezoelectric rotary drive for a shaft
A piezoelectric rotary drive for a shaft, is disclosed which can include a piezoelectric actuator and a coupling portion for driving the shaft as a stick-slip drive. To transmit greater contact forces between the frame and the shaft, at least one piezoelectric actuator and an adjustable and/or deformable frame with at least one coupling portion can be coupled to the shaft in a force-locked manner so as to accomplish a stick-slip drive, wherein the frame translates a piezoelectric deformation of the actuator mechanically such that the coupling portion rotates about the axis of the shaft over at least a part of the circumference of the shaft..
08/28/14
20140239743
Xeno transduction system
An oscillation frequency power amplification circuit is disclosed herein having improved power and frequency receiver characteristics. The power circuit is characterized by having atmospheric capacitance of device electronic amplify resonate by antenna vessel.
08/28/14
20140238522
Piezoelectric driven oscillating surface
Disclosed herein is an active roughness actuator and a method of forming an active roughness actuator. The active roughness actuator includes a surface having at least one aperture; a compliant layer disposed on the surface such that the compliant layer covers the at least one aperture; a chamber having a fluid therein and a piezoelectric surface mechanically coupled to the chamber.
08/21/14
20140236049
System and method for variable depth ultrasound treatment
A non-invasive variable depth ultrasound treatment method and system comprises a variable depth transducer system configured for providing ultrasound treatment to a patient. An exemplary variable depth transducer system can comprise a transducer configured to provide treatment to more than one region of interest, such as between a deep treatment region of interest and a superficial region of interest, and/or a subcutaneous region of interest.
08/21/14
20140233768
Acoustic generator, acoustic generation device, and electronic device
The problem is to reduce variations of sound pressure in the sound pressure frequency characteristics. To solve the problem, an acoustic generator includes a film that is a supporting plate; a frame member that is provided on the outer circumference of the film; a piezoelectric element that is provided on the film within a frame of the frame member; and a resin layer that is provided on the film within the frame of the frame member, and the resin layer including an air bubble.
08/21/14
20140232794
Liquid-ejecting head and liquid-ejecting apparatus
A liquid-ejecting head includes a pressure-generating chamber communicating with a nozzle opening and includes a piezoelectric element including a piezoelectric layer and electrodes. The piezoelectric layer contains bismuth sodium potassium titanate and satisfies the inequality 0≦pr/pm≦0.25 at 25° c., where pm and pr are the saturation polarization and remanent polarization, respectively, of the piezoelectric layer..
08/21/14
20140232793
Inkjet head and method of manufacturing the inkjet head
According to one embodiment, an inkjet head includes: a nozzle plate including plural nozzles; a piezoelectric element including plural pressure chambers corresponding to the nozzles and sidewalls provided adjacent to the pressure chambers and serving as driving elements configured to press the pressure chambers to eject liquid from the nozzles; a substrate to which the piezoelectric element is bonded; and a frame member placed on the substrate to surround the piezoelectric element. Grooves are formed on the upper end, and in which an adhesive is applied to bond the upper ends of the sidewalls and the nozzle plate..
08/21/14
20140232486
Acoustic resonator comprising acoustic reflector, frame and collar
A solidly mounted resonator (smr) device includes an acoustic reflector having stacked acoustic reflector layer pairs, each of which includes a low acoustic impedance layer formed of low acoustic impedance material stacked on a high acoustic impedance layer formed of high acoustic impedance material. The smr device further includes a bottom electrode disposed on the acoustic reflector, a piezoelectric layer disposed on the bottom electrode, and a top electrode disposed on the piezoelectric layer.
08/21/14
20140232375
Piezo sensor
A piezo sensor having an inner conductor having an inner conductor segment, where the inner conductor segment forms a tubular sidewall having a break, and also having an interior surface and an exterior surface; a plurality of individually polarized piezoelectric members, each having an inner face and an outer face, and each inner face contacting the first conductor exterior surface, each piezoelectric member being adjacent to another on the exterior face of the inner conductor, forming sets of adjacent faces; an outer conductor having an outer conductor segment forming a tubular sidewall having a break, the outer conductor having an interior surface and an exterior surface, where the interior surface contacts the outer face of the piezoelectric members; and where the break of the outer conductor segment is alignable with adjacent faces of two of the plurality of piezoelectric members, and further being alignable with the break of the inner conductor segment.. .
08/21/14
20140232244
Temperature controlled acoustic resonator comprising heater and sense resistors
A bulk acoustic wave (baw) resonator device comprises a heating cod disposed over a first side of the piezoelectric layer and substantially around a perimeter adjacent to the active area of the acoustic resonator, the heating coil comprising a resistor configured to receive a heater current; and a heat sensor disposed over a second side of the piezoelectric layer and opposing the first side, the heat sensor configured to adjust the heater current in response to a temperature of the heating coil.. .
08/21/14
20140232243
Piezoelectric vibration element, piezoelectric vibration device, and portable terminal
A piezoelectric vibration element capable of reducing occurrence of unnecessary vibration, and a piezoelectric vibration device and a portable terminal using the same are disclosed. The piezoelectric vibration element includes a plurality of electrode layers and a plurality of piezoelectric layers being stacked along a first direction, the piezoelectric vibration element having two surfaces that face each other to be at intervals in the first direction, and vibrating in bending mode in the first direction with an amplitude varying along a second direction perpendicular to the first direction according to input of an electric signal, one of the two surfaces having such a shape that a central portion thereof in a third direction perpendicular to the first direction and the second direction protrudes as compared with opposite end portions thereof in the third direction..
08/21/14
20140232242
Piezoelectric generator, sensor node, and method of manufacturing piezoelectric generator
A piezoelectric generator includes: a base body; and at least one piezoelectric transducer disposed on the base body, and including a first electrode, a piezoelectric body, and a second electrode, wherein the piezoelectric transducer includes a support section fixed to the base body, and a vibrating section disposed apart from the base body, having one end connected to the support section and the other end set as a free end, and vibrating due to a vibration applied externally, and a distance between the other end of the vibrating section and the base body is larger than a distance between the one end of the vibrating section and the base body.. .
08/21/14
20140232241
Piezoelectric array employing integrated mems switches
Switchable micromachined transducer arrays are described where a microelectromechanical systems (mems) switch, or relay, is monolithically integrated with a transducer element. In embodiments, the mems switch is implemented in the same substrate as the transducer array to implement one or more logic, addressing, or transducer control function.
08/21/14
20140232239
Acoustic wave device and electronic apparatus including same
An acoustic wave device includes a piezoelectric substrate, an idt electrode including plural electrode fingers disposed above an upper surface of the piezoelectric substrate, a first dielectric film made of oxide disposed above the upper surface of the substrate for covering the electrode fingers, and a second dielectric film made of non-oxide disposed on upper surfaces of the electrode fingers and between the first dielectric film and each of the electrode fingers. The first dielectric film contacts the upper surface of the piezoelectric substrate at a position between electrode fingers out of the plural electrode fingers adjacent to each other.
08/21/14
20140232238
Piezoelectric component and method for producing a piezoelectric component
A piezoelectric component has at least one piezoelectric ceramic layer and at least one electrode adjacent the piezoelectric ceramic layer. The piezoelectric ceramic layer has a piezoelectric ceramic material of the general formula pb1-x-y-[(2a-b)/2]-p/2v[(2a-b)/2-p/2]″cupbaxsry[(tizzr1-z)1-a-bwareb]o3, where 0≦x≦0.035, 0≦y≦0.025, 0.42≦z≦0.5, 0.0045≦a≦0.009, 0.009≦b≦0.011, 2a>b, p≦2a-b, re is a rare earth metal, and v″ is a pb vacancy..
08/21/14
20140231539
Liquid nebulizing assembly with solid nozzle plate
A liquid nebulizing assembly includes an actuating ring plate, a solid nozzle plate and a piezoelectric element. A plurality of nozzle holes is formed and distributed all over the solid nozzle plate and included between the actuating ring plate and the piezoelectric element.
08/21/14
20140231382
Piezoelectric device and method for manufacturing piezoelectric device
A piezoelectric device prevents damage to a piezoelectric thin film caused by etching and the manufacturing cost of the piezoelectric device is reduced. On a surface of a support layer formed on a support substrate, an etching adjustment layer is formed.
08/21/14
20140230573
Displacement detection device and displacement detection method
A displacement detection device includes a piezoelectric sensor. The piezoelectric sensor is provided with a piezoelectric sheet on both principal surfaces of which detection electrodes are formed.
08/21/14
20140230560
Three dimensional piezoelectric mems
Method and apparatus for a piezoelectric apparatus are provided. In some embodiments, a method for fabricating a piezoelectric device may include etching a series of vertical trenches in a top substrate portion, depositing a first continuous conductive layer over the trenches and substrate, depositing a continuous piezoelectric layer over the first continuous conductive layer such that the piezoelectric material has trenches and sidewalls, depositing a second continuous conductive layer over the continuous piezoelectric layer, etching through the vertical trenches of the first continuous conductive layer, continuous piezoelectric layer, second continuous conductive layer, and top substrate portion into a bottom substrate portion, etching a series of horizontal trenches in the bottom substrate portion such that the horizontal trenches and vertical trenches occupy a continuous free space and allow movement of a piezoelectric mems device created by the above method in three dimensions..
08/21/14
20140230557
Sensor with vacuum-sealed cavity
A method and apparatus for detecting underwater sounds is disclosed. An embodiment of the apparatus includes a substrate with a vacuum-sealed cavity.
08/21/14
20140230542
Device and method for measuring the level of a liquid within a container
A device for measuring the level of a liquid within a container, in particular the level of liquid gas, comprises a housing and a piezoelectric element adapted for generating vibrations when energized. A coupling pad is provided which is bonded to the piezoelectric element for transmitting the vibrations to a surface of the container.
08/21/14
20140230209
Piezoelectric power generating device and manufacturing method thereof
The piezoelectric power generating device includes a piezoelectric power generating plate including a piezoelectric plate having a polarized regions that are different in polarization direction, and a support member attached to the piezoelectric power generating plate. Further, the piezoelectric power generating plate includes a fixed portion fixed to the support member, a free end displaced relative to the fixed portion when an external forced, such as a vibration forced, is applied, and a cutout located between the fixed portion and the free end..
08/14/14
20140228713
Systems and methods for assessing tissue contact
Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device.
08/14/14
20140227434
Piezoelectric device and method for manufacturing piezoelectric device
In a method for manufacturing a piezoelectric device, a silicon oxide film is deposited by sputtering on a surface of a single-crystal piezoelectric substrate closer to an ion-implanted region, and a silicon nitride film is deposited by sputtering on a surface of the dielectric film opposite to a side thereof closer to the single-crystal piezoelectric substrate. The silicon oxide film has a composition that is deficient in oxygen relative to the stoichiometric composition.
08/14/14
20140225962
Poling method, poling device for piezoelectric element and inkjet print head
There is provided a poling method for a piezoelectric element, including performing preliminary poling of the piezoelectric element twice or more with different voltages and measuring conductance of the piezoelectric element with regard to respective voltage, establishing a relational expression between the voltage and the conductance of the piezoelectric element, calculating targeted conductance required to exhibit a targeted piezoelectric characteristic of the piezoelectric element, and selecting a targeted voltage level corresponding to the targeted conductance and performing final poling of the piezoelectric element at the targeted voltage level.. .
08/14/14
20140225950
Microfluidic jetting device with piezoelectric actuator and method for making the same
Disclosed herein is a microfluidic jetting device having a piezoelectric member positioned above a displaceable membrane. A voltage is applied across the piezoelectric member causing deformation of the piezoelectric member.
08/14/14
20140225684
Surface acoustic wave device
In a surface acoustic wave device, a plurality of surface acoustic wave elements include piezoelectric bodies having the same cut-angle. A propagation azimuth of a surface acoustic wave in at least one of surface acoustic wave elements is different from a propagation azimuth of a surface acoustic wave in at least another one of the surface acoustic wave elements.
08/14/14
20140225683
Acoustic resonator comprising integrated structures for improved performance
An acoustic resonator structure comprises a first electrode disposed on a substrate, a piezoelectric layer disposed on the first electrode, a second electrode disposed on the piezoelectric layer, and an air cavity disposed in the substrate below at least a portion of a main membrane region defined by an overlap between the first electrode. The acoustic resonator structure may further comprise various integrated structures at or around the main membrane region to improve its electrical performance..
08/14/14
20140225682
Acoustic resonator having temperature compensation
An acoustic resonator structure comprises a substrate having an air cavity, an acoustic stack disposed over the substrate and comprising a piezoelectric material disposed between a first electrode and a second electrode, and an acoustic reflector disposed over the substrate and comprising a single pair of acoustic impedance layers configured to reflect acoustic waves produced by vibration of the acoustic stack, wherein at least one of the acoustic impedance layers comprises a temperature compensating material.. .
08/14/14
20140225479
Vibration element, method for manufacturing same, and vibration-type driving device
An aspect of the present invention relates to a vibration element comprising: a substrate; a ceramic layer containing glass and provided on the substrate; and a piezoelectric element comprising an electrode layer fixed to the substrate with the ceramic layer therebetween and a piezoelectric layer, wherein the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer are integrated by the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer being sintered together at a sintering temperature of from 800° c. Or higher to 940° c.
08/14/14
20140225478
Vibration element, method for manufacturing same, and vibration-type driving device
A vibration element includes: a substrate; a ceramic layer containing molten glass and provided on the substrate; and a piezoelectric element fixed to the substrate with the ceramic layer therebetween, wherein the piezoelectric element includes a first electrode layer provided in contact with the ceramic layer, a second electrode layer, and a piezoelectric layer provided between the first electrode layer and the second electrode layer, and the first electrode layer has a thickness larger than that of the second electrode layer.. .
08/14/14
20140225477
Receiving circuit, semiconductor device, and sensor device
A receiving circuit (10) includes an amplifier (15) which amplifies receiving signals (sp, sn) of a piezoelectric sensor (2), and a plurality of transistors (11a, 11b) or (12a, 12b), which are connected in parallel to between one end of the piezoelectric sensor (2) and one end of the amplifier (15), and are turned on with phase shift when switching is performed to receiving operations.. .
08/14/14
20140225060
Group iii nitride semiconductor light-emitting device and method for producing the same
The present invention provides a group iii nitride semiconductor light-emitting device exhibiting high light efficiency achieved by relaxing a piezoelectric field generated in a light-emitting layer without deteriorating the crystal quality of the light-emitting layer, and a method for producing the same. The light-emitting device has a light-emitting layer in which layer units are repeatedly deposited.


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Piezoelectric topics: Piezoelectric, Piezoresistive Material, Wave Device, Acoustic Wave, Electronic Device, Attenuation, Control Unit

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