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Piezoelectric

Piezoelectric-related patent applications - as published by the U.S. Patent and Trademark Office (USPTO).


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Electroacoustic transduction film and electroacoustic transducer
Fujifilm Corporation
April 19, 2018 - N°20180109880

Provided are an electroacoustic transduction film and an electroacoustic transducer capable of reproducing a sound with a sufficient sound volume and preventing deterioration of appearance. The electroacoustic transduction film includes: a polymer composite piezoelectric body in which piezoelectric body particles are dispersed in a viscoelastic matrix formed of a polymer material having viscoelasticity at a normal temperature; a lower thin ...
Speaker device
Goertek Inc.
April 19, 2018 - N°20180109879

A speaker device comprises a vibration system, a magnetic circuit system, and an auxiliary system for accommodating and fixing the magnetic circuit system and the vibration system. The vibration system comprises a diaphragm, a centering disk and a voice coil which are joined together. The centering disk comprises a first fixing portion, a second fixing portion provided within the first ...
Surface acoustic wave (saw) device with antireflective structure
Qorvo Us, Inc.
April 19, 2018 - N°20180109242

A device including a piezoelectric substrate, an interdigital transducer (idt), and an antireflective structure is disclosed herein. The piezoelectric substrate has a front-side surface and a smoothed back-side surface. The idt is on the front-side surface of the piezoelectric substrate. The antireflective structure is over at least a portion of the smoothed back-side surface of the piezoelectric substrate. By having ...
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Piezoelectric Patent Applications
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Piezoelectric transducer device with resonance region
University Of Massachusetts
April 19, 2018 - N°20180109239

According to one configuration, an acoustical device includes a piezoelectric substrate and at least one curved electrode. Material on a surface of the piezoelectric substrate defines boundaries of a resonance region. The curved electrode is disposed on the piezoelectric substrate in the resonance region and is operable to receive a voltage input signal through a first conductive waveguide. When present, ...
Wafer-level-packaged baw devices with surface mount connection structures
Qorvo Us, Inc.
April 19, 2018 - N°20180109237

The present disclosure relates to a wafer-level-packaged (wlp) bulk acoustic wave (baw) device that includes a baw resonator, a wlp enclosure, and a surface mount connection structure. The baw resonator includes a piezoelectric layer with an opening and a bottom electrode lead underneath the piezoelectric layer, such that a portion of the bottom electrode lead is exposed through the opening ...
Elastic wave device
Murata Manufacturing Co., Ltd.
April 19, 2018 - N°20180109236

An elastic wave device includes a piezoelectric substrate and an interdigital transducer electrode provided on the piezoelectric substrate. The interdigital transducer electrode includes at least one electrode layer including an outermost electrode layer, and a protective electrode layer protecting the outermost electrode layer, the protective electrode layer has a higher electric resistivity than the outermost electrode layer, the outermost electrode ...
Piezoelectric Patent Pack
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Piezoelectric Patent Applications
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inventor
  • 1064+ full patent PDF documents of Piezoelectric-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Vibrator, ultrasonic motor, and optical device
Canon Kabushiki Kaisha
April 19, 2018 - N°20180109204

A vibrator includes a piezoelectric element including a piezoelectric ceramic having an electrode, a vibration plate, and an adhesive layer between the piezoelectric element and the vibration plate, wherein the adhesive layer is obtained by a resin containing 50 parts by mass or more and 80 parts by mass or less of organic particles having a number average particle size of 5 ...
Method of producing laminated thin film structure, laminated thin film structure, and piezoelectric element including ...
Fujifilm Corporation
April 19, 2018 - N°20180108829

A first lamination step of forming lower electrode films on both surfaces of a diaphragm and directly forming a first pb-containing perovskite oxide film which has a larger thermal expansion coefficient than that of the diaphragm and has a columnar structure on a front surface of the lower electrode film; and a second lamination step of directly forming a second ...
Piezoelectric element and device using same
Kansai University
April 19, 2018 - N°20180108826

The purpose of the present invention is to provide a fibrous piezoelectric element which enables a large electric signal to be drawn out by stress produced by relatively small deformation. A piezoelectric element includes a braid composed of a conductive fiber and a piezoelectric fiber. In the braid, the conductive fiber is a core, and the piezoelectric fiber is a ...
Driving system for piezoelectric pump
Microjet Technology Co., Ltd.
April 19, 2018 - N°20180108825

A driving system includes a voltage conversion module, a switching module, a detecting module, a voltage dividing module and a microcontroller. The voltage conversion module converts a first dc voltage into a second dc voltage. The switching module converts the second dc voltage into an ac voltage so as to drive a piezoelectric actuator of a piezoelectric pump. The detecting ...
Sound generating apparatus, electric device and method for manufacturing the same
Goertek Inc.
April 19, 2018 - N°20180108337

The present invention discloses a sound generating apparatus, an electrode device and a method for manufacturing the same. The sound generating apparatus includes a sound generating member, a piezoelectric buzzer and a front cover, wherein the front cover is attached to the front of the sound generating member, and the piezoelectric buzzer is attached to the front cover.
Integrated piezoelectric microelectromechanical ultrasound transducer (pmut) on integrated circuit (ic) for fingerprint sensing
Invensense, Inc.
April 19, 2018 - N°20180107854

Microelectromechanical (mems) devices and associated methods are disclosed. Piezoelectric mems transducers (pmuts) suitable for integration with complementary metal oxide semiconductor (cmos) integrated circuit (ic), as well as pmut arrays having high fill factor for fingerprint sensing, are described.
Touch display substrate, touch display panel and manufacturing method of touch display substrate
Beijing Boe Optoelectronics Technology Co., Ltd.
April 19, 2018 - N°20180107324

A touch display substrate includes: a transparent base; a transparent back electrode layer positioned on a front side of the transparent base; a plurality of piezoelectric detection units positioned on a front side of the transparent back electrode layer and arranged in an array; wherein each of the piezoelectric detection units includes a pressure sensitive material layer and a transparent ...
Piezoelectric Patent Pack
Download 1064+ patent application PDFs
Piezoelectric Patent Applications
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For professional research & prior art discovery
inventor
  • 1064+ full patent PDF documents of Piezoelectric-related inventions.
  • Exact USPTO filing data with full-text, images, drawings & claims.
  • Index pages: Table View and Image-Grid View layouts. All images in each PDF.
Piezoelectric element, method for manufacturing the same and piezoelectric sensor
Boe Technology Group Co., Ltd.
April 19, 2018 - N°20180106689

A piezoelectric element includes: a piezoelectric part; a first substrate and a second substrate, provided at both sides of the piezoelectric part, respectively; a first electrode layer, located between the first substrate and the piezoelectric part; and a second electrode layer, located between the electrode substrate and the piezoelectric part, wherein a surface of at least one of the first ...
Lighter
April 19, 2018 - N°20180106479

A piezoelectric lighter includes a lighter housing having a liquefied gas storage, a gas emitting nozzle extended from the liquefied gas storage, a piezoelectric unit disposed in the lighter housing, and a lighter cap slidably coupled on top of the lighter housing above the piezoelectric unit. The gas emitting nozzle is slidably received at a nozzle window of the lighter ...
Driving system for piezoelectric pump
Microjet Technology Co., Ltd.
April 19, 2018 - N°20180106245

A driving system includes a voltage conversion module, a frequency control module, a voltage switching module and a detecting module. The voltage conversion module is used for converting a first dc voltage into a second dc voltage. The frequency control module searches a resonant working frequency of a piezoelectric actuator through circuit oscillation and generates a switching signal according to ...
Liquid jetting apparatus and method for manufacturing liquid jetting apparatus
Brother Kogyo Kabushiki Kaisha
April 19, 2018 - N°20180104952

A liquid jetting apparatus includes: a channel substrate having a pressure chamber which is long in a first direction; an insulating film provided on the channel substrate to cover the pressure chamber; a piezoelectric film overlapping with the insulating film and having first and second portions, the first portion overlapping with a central portion of the pressure chamber in the ...
Liquid ejecting device, driver circuit, and head unit
Seiko Epson Corporation
April 19, 2018 - N°20180104950

A liquid ejecting device includes: an ejection section that includes a piezoelectric element that is displaced upon application of a drive signal, and ejects a liquid upon displacement of the piezoelectric element; a comparator unit that includes a first comparator section and a second comparator section, receives an input signal and the drive signal, and outputs a first control signal ...
Systems, devices, and methods for contact measurement and modulation of material properties
Board Of Trustees Of Teh University Of Illinois
April 19, 2018 - N°20180103852

Materials and devices are provided for the sensing and manipulation of biomechanical and physiochemical properties of tissues or tissue surfaces. Examples of use include soft tissues such as skin or adipose tissues or more dense tissues such as muscle or heart or dense tissues such as bone. The materials and devices provide for in vivo measurements of biomechanical properties at ...
Adaptive control of a fiber scanner with piezoelectric sensing
University Of Washington Through Its Center For Commercialization
April 19, 2018 - N°20180103834

Improved systems, methods, and devices relating to optical fiber scanners are provided. In one aspect, a scanning apparatus includes an optical fiber and a piezoelectric actuator coupled to the optical fiber to deflect a distal end of the optical fiber in a scanning pattern. The apparatus can include drive circuitry coupled to the piezoelectric actuator, sense circuitry electrically coupled to ...
Microphone and method for manufacturing the same
Bse Co., Ltd.
April 12, 2018 - N°20180103323

There is provided a microphone device comprising: a substrate having top and bottom portions, wherein the substrate has a cavity defined therein, wherein the cavity is open at the bottom portion of the substrate; a two-dimensional piezoelectric layer disposed on the top portion of the substrate, wherein the two-dimensional piezoelectric layer blocks a top of the cavity; and first and ...
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