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Piezo patents

      

This page is updated frequently with new Piezo-related patent applications.




 Electro-acoustic conversion film and digital speaker patent thumbnailElectro-acoustic conversion film and digital speaker
Provided is an electro-acoustic conversion film that is suitably used for a digital speaker or the like, and that includes a polymer composite piezoelectric body formed by dispersing piezoelectric particles in a viscoelastic matrix formed of a polymer material having viscoelasticity at room temperature, and thin-film electrodes provided on both surfaces of the polymer composite piezoelectric body, and at least one of the thin-film electrodes is divided into a plurality of regions of which an area increases by 2n times (n is a natural number including 0). Thus, a digital speaker in which reverberation or crosstalk between segments is suppressed is obtained..
Fujifilm Corporation


 Electro-acoustic conversion film and digital speaker patent thumbnailElectro-acoustic conversion film and digital speaker
Provided is an electro-acoustic conversion film that is suitably used for a digital speaker or the like, and that includes a polymer composite piezoelectric body formed by dispersing piezoelectric particles in a viscoelastic matrix formed of a polymer material having viscoelasticity at room temperature, and thin-film electrodes provided on both surfaces of the polymer composite piezoelectric body, in which at least one of the thin-film electrodes is divided into a plurality of regions having the same area, and the respective regions are coupled in parallel and grouped to correspond to a weight of each bit digit of a parallel pcm digital signal. Thus, an electro-acoustic conversion film by which a digital speaker in which reverberation or crosstalk between segments is suppressed is obtained is provided..
Fujifilm Corporation


 Acoustic resonator structure with inclined c-axis piezoelectric bulk and crystalline seed layers patent thumbnailAcoustic resonator structure with inclined c-axis piezoelectric bulk and crystalline seed layers
Systems and methods for growing hexagonal crystal structure piezoelectric material with a c-axis that is tilted (e.g., 25 to 50 degrees) relative to normal of a face of a substrate are provided. A deposition system includes a linear sputtering apparatus, a translatable multi-aperture collimator, and a translatable substrate table arranged to hold multiple substrates, with the substrate table and/or the collimator being electrically biased to a nonzero potential.
Qorvo Us, Inc.


 Piezoelectric vibrator, electronic apparatus, and vehicle patent thumbnailPiezoelectric vibrator, electronic apparatus, and vehicle
A piezoelectric vibrator includes a piezoelectric substrate including a first surface, a second surface that is opposites to the first surface, and a connection part that connects the first surface and the second surface to each other, and a pair of excitation electrodes disposed respectively on the first surface and the second surface. The connection part includes a plurality of protruding parts disposed in an area between the excitation electrode and an outer edge of the piezoelectric substrate.
Seiko Epson Corporation


 Piezoelectric vibrator element, piezoelectric vibrator, electronic apparatus, and vehicle patent thumbnailPiezoelectric vibrator element, piezoelectric vibrator, electronic apparatus, and vehicle
A piezoelectric vibrator element includes a piezoelectric substrate including a vibrating part and a fixation part, a first excitation electrode including a first foundation electrode layer disposed on a first surface of the vibrating part, and a first upper electrode layer disposed on the first foundation electrode layer, and a second excitation electrode including a second foundation electrode layer disposed on a second surface of the vibrating part, opposed to the first surface, and a second upper electrode layer disposed on the second foundation electrode layer, wherein a ratio ta2/t1 between a thickness ta2 of the second upper electrode layer and a thickness t1 of the vibrating part is not lower than 1.4% and not higher than 2.4%.. .
Seiko Epson Corporation


 Methods for producing piezoelectric bulk and crystalline seed layers of different c-axis orientation distributions patent thumbnailMethods for producing piezoelectric bulk and crystalline seed layers of different c-axis orientation distributions
Systems and methods for growing hexagonal crystal structure piezoelectric material with a c-axis that is tilted (e.g., 25 to 50 degrees) relative to normal of a face of a substrate are provided. A deposition system includes a linear sputtering apparatus, a translatable multi-aperture collimator, and a translatable substrate table arranged to hold multiple substrates, with the substrate table and/or the collimator being electrically biased to a nonzero potential.
Qorvo Us, Inc.


 Multi-stage deposition system for growth of inclined c-axis piezoelectric material structures patent thumbnailMulti-stage deposition system for growth of inclined c-axis piezoelectric material structures
Systems and methods for growing hexagonal crystal structure piezoelectric material with a c-axis that is tilted (e.g., 25 to 50 degrees) relative to normal of a face of a substrate are provided. A deposition system includes a linear sputtering apparatus, a translatable multi-aperture collimator, and a translatable substrate table arranged to hold multiple substrates, with the substrate table and/or the collimator being electrically biased to a nonzero potential.
Qorvo Us, Inc.


 Methods for fabricating acoustic structure with inclined c-axis piezoelectric bulk and crystalline seed layers patent thumbnailMethods for fabricating acoustic structure with inclined c-axis piezoelectric bulk and crystalline seed layers
Systems and methods for growing hexagonal crystal structure piezoelectric material with a c-axis that is tilted (e.g., 25 to 50 degrees) relative to normal of a face of a substrate are provided. A deposition system includes a linear sputtering apparatus, a translatable multi-aperture collimator, and a translatable substrate table arranged to hold multiple substrates, with the substrate table and/or the collimator being electrically biased to a nonzero potential.
Qorvo Us, Inc.


 Power generating element patent thumbnailPower generating element
There is provided a power generating element which is capable of converting vibration energy in various directions into electric energy without waste and less likely to be damaged even upon application of excessive vibration. Made available is a main generating structure (mgs) in which a first layer (100), a second layer (200) and a third layer (300) are laminated.
Tri-force Management Corporation


 Peristaltic pump for traction battery thermal management system patent thumbnailPeristaltic pump for traction battery thermal management system
A battery assembly may include an array of battery cells, a conduit system, and an emitter. The conduit system delivers coolant for thermally communicating with the array and defines a channel with a flexible wall having dielectric particles.
Ford Global Technologies, Llc


Composition for forming ce-doped pzt-based piezoelectric film

A composition for forming a ce-doped pzt-based piezoelectric film contains: pzt-based precursors containing metal atoms configuring the composite metal oxides; a diol; and polyvinylpyrrolidone. The pzt-based precursors are contained so that a metal atom ratio (pb:ce:zr:ti) in the composition satisfies (1.00 to 1.28):(0.005 to 0.05):(0.40 to 0.55):(0.60 to 0.45) and the total of zr and ti in a metal atom ratio is 1.
Mitsubishi Materials Corporation

Integrated piezoelectric micromechanical ultrasonic transducer pixel and array

An ultrasonic sensor pixel includes a substrate, a piezoelectric micromechanical ultrasonic transducer (pmut) and a sensor pixel circuit. The pmut includes a piezoelectric layer stack including a piezoelectric layer disposed over a cavity, the cavity being disposed between the piezoelectric layer stack and the substrate, a reference electrode disposed between the piezoelectric layer and the cavity, and one or both of a receive electrode and a transmit electrode disposed on or proximate to a first surface of the piezoelectric layer, the first surface being opposite from the cavity.
Qualcomm Incorporated

Deposition system for growth of inclined c-axis piezoelectric material structures

Systems and methods for growing hexagonal crystal structure piezoelectric material with a c-axis that is tilted (e.g., 25 to 50 degrees) relative to normal of a face of a substrate are provided. A deposition system includes a linear sputtering apparatus, a translatable multi-aperture collimator, and a translatable substrate table arranged to hold multiple substrates, with the substrate table and/or the collimator being electrically biased to a nonzero potential.
Qorvo Us, Inc.

Sensor-based percussion device

Percussion devices are described employing sensor arrays based on piezoresistive materials.. .
Kesumo, Llc

Touch sensor and liquid crystal display including the same

There are provided a touch sensor and a liquid crystal display including the same. A touch sensor includes a plurality of driving electrodes, a plurality of sensing electrodes intersecting the driving electrodes, a plurality of piezoelectric materials disposed between the driving electrodes and the sensing electrodes at intersection points of the driving electrodes and the sensing electrodes, and a touch controller for detecting a touch position and a touch pressure by using sensing signals output from the sensing electrodes..
Samsung Display Co., Ltd.

Eletrochromic display device

An electrochromic display devices to display a desired image is taught. The display includes a transparent substrate, deposited with a first electrically conducting layer.
Saralon Gmbh

Sonic sensors and packages

Embodiments relate to integrated sonic sensors having a transmitter, a receiver and driver electronics integrated in a single, functional package. In one embodiment, a piezoelectric signal transmitter, a silicon microphone receiver and a controller/amplifier chip are concomitantly integrated in a semiconductor housing.
Infineon Technologies Ag

Ce-doped pzt-based piezoelectric film

A ce-doped pzt-based piezoelectric film is provided which is formed of ce-doped composite metal oxides represented by a general formula: pbzcexzryti1-yo3. X, y, and z in the general formula satisfy a relationship of 0.005≦x≦0.05, a relationship of 0.40≦y≦0.55, and a relationship of 0.95≦z≦1.15, respectively.
Mitsubishi Materials Corporation

Piezoelectric ceramic making the same piezoelectric element liquid discharge head ultrasonic motor and dust cleaner

A barium titanate piezoelectric ceramic having good piezoelectric properties and mechanical strength and a piezoelectric element that includes the ceramic are provided. A method for making a piezoelectric ceramic includes forming a compact composed of an oxide powder containing barium titanate particles, sintering the compact, and decreasing the temperature of the compact after the sintering.
Canon Kabushiki Kaisha

Liquid ejecting head, and manufacturing liquid ejecting head

A liquid ejecting head includes a first substrate in which a piezoelectric element is provided; and a second substrate on which the first substrate is connected to a first surface, in which the second substrate is provided with a penetration hole, which penetrates through the second substrate in a plate thickness direction, and penetration wiring, which is formed from a conductor that is formed in an inner portion of the penetration hole, the penetration wiring is formed from a first end portion, which is provided on a first surface side, a second end portion, which is provided on a second surface side, which is a surface that is on an opposite side to the first surface, and connection wiring, which connects the first end portion and the second end portion, and a cross-sectional area of the connection wiring in a planar direction of the first surface is smaller than cross-sectional areas of the first end portion and the second end portion in the planar direction.. .
Seiko Epson Corporation

Device using a piezoelectric element and manufacturing the same

An inkjet printing head includes a hydrogen barrier film, covering side surfaces of upper electrodes and piezoelectric films, a portion of an upper surface of each upper electrode, and a portion of an upper surface of a lower electrode, an insulating film, formed above the hydrogen barrier film, upper wiring, formed above the insulating film, connects the upper electrode to a drive circuit, and a lower wiring, formed above the insulating film, connects the lower electrode to the drive circuit. First contact holes, each exposing an upper electrode, and second contact holes, each exposing an extension portion, are formed in the hydrogen barrier film and the insulating film.
Rohm Co., Ltd.

Electronic apparatus

An electronic apparatus is disclosed. An electronic apparatus comprises a cover panel, a display panel, and a piezoelectric vibrator.
Kyocera Corporation

Sound generator

A sound generator includes a housing (20), a piezoelectric vibrator (60) including a piezoelectric element (61), at least a portion of the piezoelectric vibrator (60) protruding from the housing (20), and an anchor (10) applying a load to the piezoelectric vibrator (60). A portion or all of the piezoelectric vibrator (60) withdraws into the housing (20) under a force of a predetermined load or greater.
Kyocera Corporation

Stringless bowed musical instrument

A stringless electric bowed musical instrument is disclosed in which sensors are provided to detect finger positions and bowing motions of the player. A touch-sensitive fingerboard surface is equipped with pitch sensors that detect finger positions.

Input terminal

A panel of an input terminal that includes a base substrate having a first principal surface and a second principal surface opposing each other; a piezoelectric film having a third principal surface and a fourth principal surface opposing each other and made of a uniaxially stretched polylactic acid; and rigid bodies disposed at end portions of the first principal surface and the second principal surface of the base substrate so as to oppose each other across the base substrate and partially prevent a deformation caused by a twist of the base substrate. First displacement detection electrodes are formed on the first principal surface of the piezoelectric film and divide the first principal surface into four.
Murata Manufacturing Co., Ltd.

Input device haptics and pressure sensing

Input device haptics and pressure sensing techniques are described. An input device includes an outer surface, a pressure sensor and haptic feedback mechanism, and a pressure sensing and haptic feedback module.
Microsoft Technology Licensing, Llc

Optical scanning actuator and optical scanning apparatus

An optical scanning actuator (1) includes an optical fiber (2) having a tip (2a) supported to allow vibration and includes a piezoelectric element (4) that generates a driving force by expanding and contracting in the direction of the optical axis of the optical fiber (2), the driving force driving the tip (2a) of the optical fiber (2) in a direction perpendicular to the optical axis. The optical scanning actuator (1) has rotational asymmetry or two-fold rotational symmetry about the optical axis of the optical fiber (2), and the resonance direction of the tip (2a) of the optical fiber (2) and the direction of the driving force of the piezoelectric element (4) are substantially parallel..
Olympus Corporation



Piezo topics:
  • Piezoelectric
  • Transducer
  • Ultrasonic
  • Electric Actuator
  • Electronic Device
  • Electronic Apparatus
  • Damping Force
  • Radial Flow
  • Semiconductor Material
  • Semiconductor
  • Sound Transducer
  • Ultrasound
  • Synchronous
  • Asynchronous
  • Liquid Adhesive


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    This listing is a sample listing of patent applications related to Piezo for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Piezo with additional patents listed. Browse our RSS directory or Search for other possible listings.


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