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Piezoelectric patents



      

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




Date/App# patent app List of recent Piezoelectric-related patents
07/21/16
20160212516 
 Exterior cover with speaker patent thumbnailExterior cover with speaker
The present disclosure provides an exterior cover of an electronic device including a cover that protects a display of the electronic device. The cover may include one or more speakers.
Samsung Electronics Co., Ltd.


07/21/16
20160211826 
 Passive wireless sensor including piezoelectric mems resonator patent thumbnailPassive wireless sensor including piezoelectric mems resonator
A passive wireless sensor includes a substrate having at least one microelectromechanical system (mems) piezoelectric resonator thereon. The mems piezoelectric resonator includes a piezoelectric layer between a top metal or semiconductor layer (top electrode layer) and a bottom metal or semiconductor layer (bottom electrode layer).
University Of Central Florida Research Foundation, Inc.


07/21/16
20160211824 
 Frequency-variable filter patent thumbnailFrequency-variable filter
A frequency-variable filter includes a filter unit and matching circuits. The filter unit includes frequency-variable resonance circuits that include piezoelectric resonators.
Murata Manufacturing Co., Ltd.


07/21/16
20160211778 
 Power generating element patent thumbnailPower generating element
The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion (120) and a second plate-like bridge portion (130) extend in a shape of a letter u from a fixing-portion (110) fixed to the device housing (200) and a weight body (150) is connected to the end.
Tri-force Management Corporation


07/21/16
20160211777 
 Energy generating device using temperature variation and sensor for detecting temperature variation comprising the same patent thumbnailEnergy generating device using temperature variation and sensor for detecting temperature variation comprising the same
An energy generating device includes first material portions comprising a first material, wherein the first material is a piezoelectric material; second material portions comprising a second material, wherein the second material has a larger coefficient of thermal expansion than the first material; lower electrodes; and upper electrodes, wherein second material portions are spaced apart from one another, the first material portions are disposed in a space between the second material portions and in contact with the second material portion, and each of the lower electrodes and upper electrodes are disposed below and above, respectively, each of the first material portions.. .
Research & Business Foundation Sungkyunkwan University


07/21/16
20160211776 
 Piezoelectric actuator, ceramic component polarizing method and piezoelectric motor system patent thumbnailPiezoelectric actuator, ceramic component polarizing method and piezoelectric motor system
The piezoelectric actuator of the present invention has at least one ceramic component. The ceramic component has an output surface and two driving surfaces.
Chung-yuan Christian University


07/21/16
20160211439 
 Multi-axis piezoelectric transducer patent thumbnailMulti-axis piezoelectric transducer
A multi-axis transducer is provided. The transducer includes: a stationary member; at least two connecting members and two or more energy-conversion elements disposed on each connecting member.
The Regents Of The University Of Michigan


07/21/16
20160209961 
 Touch sensor patent thumbnailTouch sensor
Provided herein is a touch sensor for sensing a touch of a user. The touch sensor includes a first electrode, a second electrode facing the first electrode, at least one piezoelectric element disposed between the first electrode and the second electrode, and electrode pads coupled to the first electrode..
Electronics And Telecommunications Research Institute


07/21/16
20160209922 
 Display panel including piezoelectric device and  compensating for properties of piezoelectric device patent thumbnailDisplay panel including piezoelectric device and compensating for properties of piezoelectric device
There is provided a display panel including a piezoelectric device and a method for compensating properties of a piezoelectric device. According to the an exemplary embodiment of the present disclosure, the display panel includes: a panel; and a piezoelectric device coupled with the panel, wherein the piezoelectric device includes: a plurality of piezoelectric elements disposed at different positions of the panel and each configured to generate vibrations according to a driving signal; a driver configured to supply the driving signal to the plurality of piezoelectric elements; a plurality of acceleration sensors configured to detect acceleration information of vibrations in different regions of the panel; and a compensator configured to control the driving signal to compensate for property deviations of the plurality of piezoelectric elements, based on the acceleration information..
Samsung Display Co., Ltd.


07/21/16
20160209751 
 Mirror, more particularly for a microlithographic projection exposure apparatus patent thumbnailMirror, more particularly for a microlithographic projection exposure apparatus
A mirror, in particular for a microlithographic projection exposure apparatus has an optically effective surface (11), a mirror substrate (12), a reflection layer stack (21) for reflecting electromagnetic radiation that is incident on the optical effective surface, and at least two piezoelectric layers (16a, 16b, 16c), which are arranged successively between the mirror substrate and the reflection layer stack in the stack direction of the reflection layer stack and to which an electric field can be applied to produce a locally variable deformation, wherein at least one intermediate layer (22a, 22b) made of crystalline material is arranged between the piezoelectric layers (16a, 16b, 16c), wherein the intermediate layer is designed to leave an electric field, which is present in the region of the piezoelectric layers (16a, 16b, 16c) that adjoin the intermediate layer (22a, 22b) in the stack direction of the reflection layer stack (21), substantially uninfluenced.. .
Carl Zeiss Smt Gmbh


07/21/16
20160209526 

Neutron detector


A neutron detecting system and method. The neutron detecting system may include one or more coated substrates including a piezoelectric substrate having a first surface and a second surface opposite of the first surface, a coating of 10boron (10b) on the first surface, and a conductive backplane deposited on the second surface.
Honeywell Fm&t


07/21/16
20160209501 

Sensor system


A sensor system is provided which includes an electroacoustic transducer, which is designed as a thickness oscillator and accordingly includes a front element having a bottom area and an end face, at least one disk-shaped piezoelectric element having a first surface and a second surface, and a rear element having a first end face and a second end face, the end face of the front element being coupled to a diaphragm which is suitable for emitting and receiving sound waves. The bottom area of the front element is joined to the first surface of the piezoelectric element integrally and/or in a force-fit manner, and the second end face of the rear element is joined to the second surface of the piezoelectric element integrally and/or in a force-fit manner.
Robert Bosch Gmbh


07/21/16
20160209408 

Device for detecting an analyte


This invention relates to a device for detecting an analyte in a sample comprising: a radiation source adapted to generate a series of pulses of electromagnetic radiation; a transducer having a pyroelectric or piezoelectric element and electrodes which is capable of transducing energy generated by non-radiative decay into an electrical signal; a detector which is capable of detecting the electrical signal generated by the transducer; a first reagent proximal to the transducer, the first reagent having a binding site which is capable of binding a labelled reagent proportionally to the concentration of the analyte in the sample, which labelled reagent being capable of absorbing the electromagnetic radiation generated by the radiation source to generate energy by non-radiative decay; a second reagent proximal to the transducer, the second reagent having a lower affinity for the labelled reagent under the conditions of the assay than the first reagent; and a third reagent proximal to the transducer, the third reagent having a binding site which is capable of binding the labelled reagent, wherein the third reagent has an affinity for the labelled reagent which is less influenced than the first reagent by the concentration of the analyte or the complex or derivative of the analyte.. .
Vivacta Limited


07/21/16
20160209323 

Variable ice and methods for measuring sample properties with the same


A system and method for measuring properties of a sample utilizing a variable integrated computation element (ice) formed of one or more layers of film that is physically sensitive to an electrical field or a magnetic field applied through the material. The thickness of a layer, and hence the optical properties of the ice, can be electrically or magnetically altered to adjust the ice for a analysis of a particular property of the sample, or to calibrate the ice or to adjust the ice to compensate for alterations to the ice resulting from environmental conditions.
Haliburton Energy Services, Inc.


07/21/16
20160209273 

Infrared radiation detection element, infrared radiation detection device, and piezoelectric element


An infrared detecting element includes a detection laminate body including a lower electrode layer, a detection layer provided on the lower electrode layer, and, an upper electrode layer provided on the detection layer. The detection layer has a columnar crystal structure.
Panasonic Intellectual Property Management Co., Ltd.


07/21/16
20160207340 

Inspection liquid discharge head and liquid discharge device


Inspection processing is performed. The inspection processing includes a first driving step of driving a piezoelectric element corresponding to an inspection target nozzle, a first detection step of detecting vibration that is generated in ink in a pressure chamber corresponding to the inspection target nozzle by the driving in the first driving step, a second driving step of driving together the piezoelectric element corresponding to the inspection target nozzle and a piezoelectric element corresponding to at least one nozzle of nozzles adjacent to the inspection target nozzle, and a second detection step of detecting vibration that is generated in the ink in the pressure chamber corresponding to the inspection target nozzle by the driving in the second driving step..
Seiko Epson Corporation


07/21/16
20160207312 

Liquid jetting apparatus


A liquid jetting apparatus includes: a flow passage structure having nozzles aligned in a first direction, pressure chambers aligned in the first direction to correspond respectively to the nozzles, and a vibration film covering the pressure chambers; piezoelectric elements arranged on the vibration film to correspond respectively to the pressure chambers; and traces extending along a planar direction of the vibration film to correspond respectively to the piezoelectric elements. Each of the piezoelectric elements has a piezoelectric film arranged to cover the pressure chambers, and an individual electrode provided on the piezoelectric film to face a central portion of one of the pressure chambers and extending in a second direction intersecting the first direction.
Brother Kogyo Kabushiki Kaisha


07/14/16
20160205325 

Driver and image instrument


A driver includes a piezoelectric sheet, a fixing frame, a moving frame, and a control circuit. The piezoelectric sheet includes a first piezoelectric body portion which bends in a first direction, a second piezoelectric body portion which bends in a second direction that intersects at right angles with the first direction, and a connection portion which connects the first and second piezoelectric body portions.
Olympus Corporation


07/14/16
20160204761 

Acoustic resonator and manufacturing the same


There are provided an acoustic resonator and a method of manufacturing the same. The acoustic resonator includes a resonance part including a first electrode, a second electrode, and a piezoelectric layer disposed between the first and second electrodes.
Samsung Electro-mechanics Co., Ltd.


07/14/16
20160204337 

Layered body


A layered body including a polymeric piezoelectric body which includes an optically active aliphatic polyester (a) having a weight average molecular weight of from 50,000 to 1,000,000 and has crystallinity obtained by a dsc method, of from 20% to 80%, and a layer (x) which is in contact with the polymeric piezoelectric body and has an acid value of 10 mg koh/g or less.. .
Mitsui Chemicals, Inc.


07/14/16
20160204336 

Piezoelectric ceramic, piezoelectric element, piezoelectric device and piezoelectric ceramic manufacturing method


Where 0≦v≦1, 0≦w≦1, 1≦b≦6, 2≦c≦19, b+2c−1≦d≦b+2c and b<c where b, c and d are integers.. .

07/14/16
20160204335 

Piezoelectric ceramic, piezoelectric element, and electronic appliance


(where 0.09≦x≦0.30, 0.025≦y≦0.085, 0.986≦a≦1.02). .

07/14/16
20160204333 

Piezoelectric sensor


The present disclosure provides a highly sensitive piezoelectric sensor in which mixing of electromagnetic noise into signals output from a piezoelectric device is suppressed. The present disclosure provides a piezoelectric sensor including a piezoelectric device which includes a piezoelectric film having an insulating film and a piezoelectric layer stacked on one principal surface of the insulating film and a signal electrode layer stacked on one principal surface of the piezoelectric film, an amplifier electrically connected to the signal electrode layer, and a shield member which is not electrically connected to the signal electrode layer and is composed of a grounded conductor, wherein the piezoelectric film, the signal electrode layer, and the amplifier are accommodated inside the shield member..
Murata Manufacturing Co., Ltd.


07/14/16
20160202519 

Liquid crystal display having improved lateral visibility


A liquid crystal display according to an exemplary embodiment of the present invention includes: a first insulation substrate; a thin film transistor disposed on the first insulation substrate; a pixel electrode connected to the thin film transistor; a second insulation substrate facing and spaced apart from the first insulation substrate; a common electrode disposed on the second insulation substrate; a liquid crystal layer disposed between the pixel electrode and the common electrode; and one or more piezoelectric elements overlying one or more portions of at least one of the pixel electrode and the common electrode.. .
Samsung Display Co., Ltd.


07/14/16
20160202366 

Force feedback electrodes in mems accelerometer


A microelectromechanical system (mems) accelerometer having separate sense and force-feedback electrodes is disclosed. The use of separate electrodes may in some embodiments increase the dynamic range of such devices.
Agency For Science Technology And Research (a*star)


07/14/16
20160201456 

Downhole tool


The present invention relates to a downhole tool (10) to be submerged into a well fluid from a top of a well, comprising a first tool section (21), a tool housing (3) having an inner face (4), a downhole communication module (1) for communicating through a well fluid in a downhole well to operate the downhole tool, comprising a piezoelectric transceiver (5) having a first face (6) and a second face (7) and being arranged in the tool housing, wherein an element (8) is arranged between the piezoelectric transceiver and the tool housing, and the element is arranged in abutment with the first face of the piezoelectric transceiver and the inner face of the housing, so that the tool housing acts as a transducer when the piezoelectric transceiver is activated and enlarges in a radial direction of the tool housing, forcing the tool housing outwards and sending a signal through the well fluid. The present invention also relates to a downhole system and a communication method..
Welltec A/s


07/14/16
20160200103 

Liquid ejection head and liquid ejection device


A liquid ejection head includes a plurality of liquid ejection units, each including a plate-like piezoelectric element, a first substrate and a second substrate laid one on the other in this order, the units being laid one on the other. The first substrate defines a plurality of pressure chambers for storing liquid, each of the pressure chambers communicating with an ejection port for ejecting liquid.
Canon Kabushiki Kaisha


07/14/16
20160200101 

Liquid ejecting head and liquid ejecting apparatus


A liquid ejecting head includes: a nozzle plate provided with nozzle openings; an actuator unit including a flow channel formation substrate in which pressure generation chambers are provided and piezoelectric actuators that cause a change in the pressure of the liquid within respective pressure generation chambers; a communication substrate in which communication channels that communicate between the pressure generation chambers and corresponding nozzle openings are provided; a first case member that is a frame member affixed to the communication substrate so that the actuator unit is disposed within the first case member and that, along with the actuator unit, forms a manifold that holds the liquid to be supplied to the pressure generation chambers; and a second case member that is affixed to the first case member and in which is formed an introduction channel that sends the liquid from the exterior to the manifold.. .
Seiko Epson Corporation


07/14/16
20160199225 

Micro-droplet delivery device and methods


Micro-droplet delivery devices and methods are described where the device may comprise a piezoelectric actuator having a piezoelectric chip that is operatively coupled to a drug package under a preloading force. The actuator is configured to generate an acoustic pressure within the drug package to dispense droplets of an agent from an aperture, e.g., to the corneal surface of the eye.

07/14/16
20160199031 

Matching member and ultrasound probe including the same


Provided are a matching member and an ultrasound probe including the matching member. The ultrasound probe includes a piezoelectric layer for converting an ultrasound wave to an electric signal or an electric signal to an ultrasound wave; and a matching layer disposed on the piezoelectric layer and having a particle-in-binder (pib) structure in which a plurality of conductive particles and a binder are mixed, wherein at least one of the plurality of conductive particles includes: a core; and a shield formed of a different material than that of the core and surrounding a surface of the core..
Samsung Medison Co., Ltd.


07/07/16
20160198269 

Headphone


A headphone is disclosed that includes a headband and a pair of sound emitting units. The headband is a band-shaped body that is curved in an arch shape.
Murata Manufacturing Co., Ltd.


07/07/16
20160198268 

Electronic apparatus


An electronic apparatus 1 having a panel 10, a housing 60 for supporting the panel 10, and a piezoelectric element unit 30 attached to the panel 10, the panel 10 becomes bent by the piezoelectric element unit 30 in such a manner that a region of the panel 10 immediately above the piezoelectric element unit 30 in a longitudinal direction thereof is raised higher than a surrounding region, and thus a part of the human body in contact with the panel 10 vibrates and delivers a sound, wherein the panel 10 is attached to the housing 60 by a double-sided adhesive tape 70 provided along a periphery of the panel 10 and an adhesive 71 applied along the double-sided adhesive tape 70.. .
Kyocera Corporation


07/07/16
20160197609 

Mounting arrangement for piezoelectric sensor device


An apparatus or installation comprises a surface (2) and at least one piezoelectric sensor device (18, 27, 90) that is a piezoelectric touch switch comprising at least one piezoelectric sensor (13), located below the surface (2) so that the surface (2) functions as an overlay to the piezoelectric touch switch, the piezoelectric sensor device (18, 27, 90) configured so that the piezoelectric sensor (13) bends in response to a force or pressure exerted on the surface (2) causing the surface (2) to bend. The apparatus (1) or installation comprises continuously adjustable compression adjusting means (6) that operate on the backer piece (5) to compress the piezoelectric sensor device (18, 27, 90) and the at least one squeezer (7) between the overlay (2) and the backer piece (5), for compensating the surface or mounting tolerances..
Aito Interactive Oy


07/07/16
20160197596 

Film bulk acoustic resonator filter


An acoustic resonator comprising a substantially horizontal membrane of piezoelectric material with upper and lower metal electrodes on its upper and lower faces, said membrane being attached around its perimeter to the inner side walls of a rectangular interconnect frame by an attaching polymer, the side walls of the package frame being substantially perpendicular to the membrane and comprising conducting vias within a dielectric matrix, the conducting vias running substantially vertically within the side walls, the metal electrodes being conductively coupled to the metal vias by a feature layer over the upper surface of the membrane and top and bottom lids coupled to top and bottom ends of the interconnect frame to seal the acoustic resonator from its surroundings.. .
Zhuhai Advanced Chip Carriers & Electronic Substrate Solutions Technologies Co. Ltd.


07/07/16
20160197593 

Method for fabricating film bulk acoustic resonator filters


An acoustic resonator comprising a substantially horizontal membrane of piezoelectric material with upper and lower metal electrodes on its upper and lower faces, said membrane being attached around its perimeter to the inner side walls of a rectangular interconnect frame by an attaching polymer, the side walls of the package frame being substantially perpendicular to the membrane and comprising conducting vias within a dielectric matrix, the conducting vias running substantially vertically within the side walls, the metal electrodes being conductively coupled to the metal vias by a feature layer over the upper surface of the membrane and top and bottom lids coupled to top and bottom ends of the interconnect frame to seal the acoustic resonator from its surroundings.. .
Zhuhai Advanced Chip Carriers & Electronic Substrate Solutions Technologies Co. Ltd.


07/07/16
20160197263 

Systems and methods for implementing efficient magnetoelectric junctions


Systems and methods in accordance with embodiments of the invention implement efficient magnetoelectric junctions (mejs). In one embodiment, an mej system includes: at least one mej, and a first layer including a piezoelectric material disposed proximate at least one mej; where the straining of at least some portion of the first layer including a piezoelectric material causes at least some portion of at least one mej to experience a stress and a related strain..
Inston, Inc.


07/07/16
20160197262 

Generator unit for energy harvesting with a single force input point


A generator unit to harvest energy from motion is disclosed which comprises a support (6) with a connection member (7) for attachment to a movable object (8), at least a first body (3) and a second body (9) supported by the support and configured to move relatively to each other and with a varying, preferably magnetic field (4) spatially in between, one of the first or second body comprising at least one electricity generating member (2) of piezoelectric, electromagnetic or electrostatic type to produce electricity when mechanically deformed or moved, and a field engagement part (5) configured to move in the varying field when the first and second bodies move relatively to each other and generate a varying mechanical deformation or movement of the electricity generating member.. .
Meggitt A/s


07/07/16
20160197213 

Bare quantum dots superlattice photonic devices


Manipulation of the passivation ligands of colloidal quantum dots and use in qd electronics. A multi-step electrostatic process is described which creates bare qds, followed by the formation of qd superlattice via electric and thermal stimulus.
University Of South Florida


07/07/16
20160196843 

Multilayer disk drive motors having out-of-plane bending


Various embodiments concern a gimbaled flexure having a dual stage actuation structure. The flexure comprises a gimbal on which a motor is mounted.
Hutchinson Technology Incorporated


07/07/16
20160196842 

Piezoelectric element, piezoelectric actuator, and head suspension


A piezoelectric element easily and surely forms polymer coatings on peripheral end faces of the piezoelectric element without deteriorating a yield of the piezoelectric element. The piezoelectric element is manufactured by a method including steps of cutting a piezoelectric element out from a base piezoelectric material plate so that peripheral end faces are formed to define a peripheral shape of the piezoelectric element, and forming polymer coatings on at least objective areas of the peripheral end faces of the piezoelectric element by vapor deposition polymerization, respectively..
Nhk Spring Co., Ltd.


07/07/16
20160195994 

Touch input device


A touch input device includes a touch panel, a press detection signal generating unit and a touch detection signal generating unit. The touch panel is formed by laminating a piezoelectric sensor and a capacitive sensor.
Murata Manufacturing Co., Ltd.


07/07/16
20160195971 

Touch sensor


A touch sensor that includes a pressure detection sensor and a position detection sensor. The pressure detection sensor and the position detection sensor are sequentially disposed from an operation surface side of the touch sensor.
Murata Manufacturing Co., Ltd.


07/07/16
20160195439 

Pressure sensor for detecting force


A method, a device and use for measurement of a force with a pressure sensor made of a piezoelectric material. The change in the capacitance of the pressure sensor is used for force measurement so that no load amplifier is necessary for measurement and as a result the measuring system as a whole is miniaturized..
Ceramtec Gmbh


07/07/16
20160194961 

Piezoelectric damping rings


A blisk assembly for vibration dampening includes a disk portion extending circumferentially about a central axis of the blisk, a plurality of blades integrally coupled to the disk, and a piezoelectric damping ring that includes a damping ring and a plurality of piezoelectric elements coupled to the damping ring. The disk portion includes a groove configured to receive the piezoelectric damping ring.
Rolls-royce Corporation


07/07/16
20160193828 

Piezoelectric element drive circuit and state detection method, and image recording device


Provided are a piezoelectric element drive circuit and state detection method, and an image recording device which realize state detection of a piezoelectric element inexpensively and with a suppressed circuit scale in a drive circuit for rapidly driving a large-capacity load that uses negative voltage drive. An output potential (vout) of a boost unit (bst) is detected in a state in which vs_amp supplied to an amplification unit (amp) is set to a voltage lower than a maximum rating of a transistor (fet1) by sw1, supply of vs_fet to the boost unit (bst) is blocked by sw2, and an individual electrode (28) of a piezoactuator (30) is pulled down to vs_fet via a resistor (r6)..
Fujifilm Corporation


07/07/16
20160193613 

Method and manipulating particles


A method and apparatus for manipulating polarizable dielectric particles. The method includes positioning a liquid containing the particles above a surface of a piezoelectric material (2).
University Of Leeds


07/07/16
20160192905 

Piezoelectric crystal elements of shear mode


piezoelectric crystal elements are provided having preferred cut directions that optimize the shear mode piezoelectric properties. In the discovered cut directions, the crystal elements have super-high piezoelectric performance with d15, d24 and d36 shear modes at room temperature.
Ctg Advanced Materials, Llc


07/07/16
20160192900 

Device for utilizing transmission ultrasonography to enable ultrasound-guided placement of central venous catheters


Ultrasound is typically performed with the use of an external transcutaneous probe that emits ultrasonic energy and measures the timing of reflected waves, thus allowing measurement of fluid flow or formation of a two-dimensional image. Clinically, the modality is limited by attenuation of the signal with increasing depth of penetration of the ultrasound into tissues, as well as by similarities in echo-genicity between different tissues.
The Johns Hopkins University


07/07/16
20160192601 

Plant cultivation device


A plant cultivation device includes a case (100), a temperature control module (200), and a circulation fan (310). A cultivation room (110) is formed in the case (100).
Cal-comp Biotech Co., Ltd.


06/30/16
20160192081 

Audio apparatus, audio system, image display apparatus, and image projection apparatus


An audio apparatus includes a housing, a piezoelectric vibration unit provided to the housing and having a piezoelectric element, and a communication unit for receiving an audio signal. When a received audio signal is applied to the piezoelectric element while a load of the audio apparatus is applied to the piezoelectric vibration unit, the piezoelectric element is deformed causing deformation of the piezoelectric vibration unit, whereby a contact surface in contact with the audio apparatus vibrates and generate a sound..

06/30/16
20160191017 

Co-integrated bulk acoustic wave resonators


An electrical circuit assembly can include a semiconductor integrated circuit, such as fabricated including cmos devices. A first lateral-mode resonator can be fabricated upon a surface of the semiconductor integrated circuit, such as including a deposited acoustic energy storage layer including a semiconductor material, a deposited piezoelectric layer acoustically coupled to the deposited acoustic energy storage layer, and a first conductive region electrically coupled to the deposited piezoelectric layer and electrically coupled to the semiconductor integrated circuit.

06/30/16
20160190431 

Polymer foam-based piezoelectric materials and manufacture


Thermally stable piezoelectric polymer foams (ferroelectrets) with high piezoelectric activity for sensing and actuation. The invention further includes a method of fabricating such foams in an environmentally friendly manner..

06/30/16
20160190429 

Piezoelectric film and piezoelectric ceramics


An object is to cause a piezoelectric film to perform a piezoelectric operation at a higher voltage than the conventional piezoelectric film. An aspect of the present invention is a piezoelectric film, wherein a voltage at which a piezoelectric butterfly curve that is a result obtained by measuring a piezoelectric property of a piezoelectric film takes a minimum value is larger by 2 v or more than a coercive voltage of a hysteresis curve that is a result obtained by measuring a hysteresis property of said piezoelectric film.

06/30/16
20160190427 


Disclosed are a nanofiber web piezoelectric material and a method of producing the same, wherein a spinning solution of polylactic acid (pla) in a solvent is electrospun, yielding a nanofiber web, thereby exhibiting piezoelectric properties without additional drawing. This piezoelectric material is remarkably cost-effective, can exhibit superior piezoelectric properties, can be used to manufacture inexpensive piezoelectric products, and obviates any additional drawing because the pla chain is drawn during electrospinning.

06/30/16
20160190426 

Piezoelectric vibrator and manufacturing piezoelectric vibrator


A piezoelectric vibrator has a piezoelectric vibrating reed mounted on an upper layer base substrate through a conductive adhesive, in which the piezoelectric vibrating reed includes a first vibrating arm and a second vibrating arm extending along a first direction and arranged side by side in a second direction, a base supporting the first vibrating arm and the second vibrating arm and a first support arm and a second support arm positioned in the outer side of the first vibrating arm and the second vibrating arm in the second direction and bonded to the upper layer base substrate, in which an extrusion amount of the conductive adhesive in the inner side of the first support arm and the second support arm is smaller than an extrusion amount of the conductive adhesive in the outer side of the first support arm and the second support arm.. .

06/30/16
20160190425 

Method for manufacturing piezoelectric actuator


A method for manufacturing a piezoelectric actuator is disclosed that includes forming a vibration plate, forming a plurality of electrodes on the vibration plate, forming a piezoelectric layer on the electrodes, and forming a common electrode on the piezoelectric layer.. .

06/30/16
20160190423 

Elastic wave device and manufacturing same


In an elastic wave device, idt electrodes on a piezoelectric substrate are electrically connected to wiring electrodes. A support member covers at least portions of the wiring electrodes.

06/30/16
20160187298 

Probe and manufacturing method thereof


Disclosed herein is a probe including: an acoustic module including a piezoelectric layer configured to generate ultrasonic waves, a matching layer configured to reduce a difference in acoustic impedance between the piezoelectric layer and an object, and a backing layer configured to absorb ultrasonic waves generated by the piezoelectric layer and transmitted backward from the piezoelectric layer; a plurality of attenuation layers provided at both edges of the upper surface of the acoustic module, and configured to attenuate ultrasonic waves generated by the acoustic module; and a lens layer disposed to cover the upper surfaces of the attenuation layers, and configured to focus ultrasonic waves transmitted forward from the piezoelectric layer at a predetermined point.. .

06/30/16
20160187183 

Sensor module of a wim system and mesurement method


A sensor module for measuring axle speeds and weights of double-track vehicles which travel in a direction of travel (l) along a carriageway with two lanes includes a plurality of piezoelectric strip sensors (a, b, c, d) that are arranged in a first lane group (i) and a second lane group (ii). All the strip sensors (a, b, c, d) are spaced from each other in the direction of travel (l) via a secure longitudinal offset (lad), which is greater than the maximum wheel contact length, and are offset from one another by between one centimeter and fifteen centimeters in the transversal direction.

06/30/16
20160186712 

Sensor module for a pressure-measuring sheathed-element glow plug


A sensor module having a sensor housing, at least one piezoelectric converter element that is disposed in the sensor housing, and at least one insulating member that is disposed in the sensor housing alongside the converter element. The insulating member has on its outer periphery at least one recess in which a contacting system of the converter element extends.

06/30/16
20160185118 

Liquid ejection apparatus and formimg liquid ejection apparatus


A liquid ejection apparatus and method of manufacture are disclosed. One apparatus includes a pressure chamber, a diaphragm covering the pressure chamber, and a piezoelectric element having a piezoelectric component positioned opposing the pressure chamber.

06/30/16
20160185117 

Liquid discharge producing the same


A liquid discharge apparatus includes: a pressure chamber; a film covering the pressure chamber; a piezoelectric element disposed on the film and including a piezoelectric part, a first electrode, and a second electrode, wherein the first electrode is disposed on a first side of the piezoelectric part facing the pressure chamber, and the second electrode is disposed on a second side of the piezoelectric part opposite the first side; a gold trace connected to the first electrode or the second electrode; and a first metal part made of a metal material except for gold and positioned between the film and the gold trace. The first metal part is laminated with the gold trace..

06/30/16
20160185116 

Piezoelectric actuator, liquid discharging producing piezoelectric actuator


There is provided a piezoelectric actuator including: a plurality of piezoelectric elements forming first and second piezoelectric element rows, and including first, second electrodes and piezoelectric portion; an electrode conductive portion; a contact section; a plurality of drive wires,; and conductive wires. A part of the drive wires corresponding to the piezoelectric elements of the second piezoelectric element row are extended toward the contact section while passing between two adjacent piezoelectric elements of the first piezoelectric element row which are adjacent in the first direction.

06/30/16
20160185115 

Liquid jet manufacturing liquid jet apparatus


There is provided a liquid jet apparatus including a channel substrate having a plurality of pressure chambers and a film covering the plurality of pressure chambers, a piezoelectric layer, a plurality of individual electrodes, a common electrode, and a trace extending from one of the plurality of individual electrodes to pass through between two adjacent individual electrodes of the plurality of individual electrodes. An opening of the piezoelectric layer is provided between the two adjacent individual electrodes, and a metallic film is formed to cover the trace in such an area of the trace as to overlap with the opening positioned between the two adjacent individual electrodes..

06/30/16
20160184613 

High intensity focused ultrasonic piezoelectric actuator and manufacturing the same


Disclosed is a focused ultrasonic piezoelectric actuator having a novel type of piezoelectric device for focusing ultrasonic waves. The focused ultrasonic piezoelectric actuator includes a dome-shaped piezoelectric body for focusing ultrasonic waves and a rim configured to facilitate focusing of ultrasonic waves of the body and injection of the dome-shaped piezoelectric body during a powder injection molding process, remove warpage of the dome-shaped body during a sintering process, and reinforce focusing intensity of the ultrasonic waves.

06/30/16
20160184595 

Piezoelectric medical implant


Various medical implants and methods of using the implants are disclosed. In an embodiment, the implants include piezoelectric polymers for treating unwanted medical conditions of a patient.

06/30/16
20160184494 

Prohealing piezoelectric coatings


Provided herein is a prohealing piezoelectric coating and the method of making and using the same.. .

06/30/16
20160184491 

Prohealing piezoelectric coatings


Provided herein is a prohealing piezoelectric coating and the method of making and using the same.. .

06/30/16
20160183916 

Probe and manufacturing method thereof


A probe includes: a piezoelectric layer to generate ultrasonic waves, a backing layer to absorb ultrasonic waves generated at the piezoelectric layer and proceeding toward a rear, a reflective layer occupying an area smaller than an area of the piezoelectric layer and provided in between the piezoelectric layer and the backing layer to amplify the ultrasonic waves generated at the piezoelectric layer, and a lens layer to focus the ultrasonic waves proceeding toward a front of the piezoelectric layer at a certain point.. .

06/30/16
20160183912 

Apparatus and forward facing piezoelectric element ultrasound stylus


An apparatus and method for fabricating a forward facing piezoelectric stylus is provided. In a representative device, a piezoelectric element is connected to a stylus shaft, wherein the stylus shaft provides connectivity from the piezoelectric element to a console device.

06/30/16
20160183847 

Apparatus and detecting a fall


A fall detection method performed by a fall detection server includes receiving electricity information from a piezoelectric plate disposed adjacent to a bed of a subject, performing a primary determination of whether or not the subject fell from the bed based on the electricity information, and triggering an imaging device to capture an image of a current state of the subject if it is determined that the subject fell, receiving video information including the image of the current state of the subject from the imaging device, and transmitting fall information relating to a fall of the subject to a terminal of the subject, the fall information including one or more of the primary determination result, trigger information of the imaging device, and the video information.. .

06/30/16
20160183844 

Intra-vascular device with pressure detection capabilities using pressure sensitive material


A laser catheter with a pressure sensor is provided according to embodiments of the invention. The pressure sensor may be coupled with the distal end of the laser catheter and may comprise any of various piezoelectric materials, for example polyvinylidene difluoride (pvdf).

06/23/16
20160183017 

Transducer devices and methods for hearing


A device to transmit an audio signal to a user may comprise a mass, a piezoelectric transducer, and a support to support the mass and the piezoelectric transducer with the eardrum. The piezoelectric transducer can be configured to drive the support and the eardrum with a first force and the mass with a second force opposite the first force.

06/23/16
20160183006 

Piezoelectric speaker and electroacoustic transducer


A piezoelectric speaker has a piezoelectric element and vibration plate. The piezoelectric element has a base body with a mounting surface, as well as first and second terminals that are formed on the mounting surface with a distance between them.

06/23/16
20160182036 

Driving circuit for driving a capacitive load, and control a driving circuit for driving a capacitive load


A liquid discharge apparatus includes: a piezoelectric element that is displaced according to a voltage of a drive signal; a cavity which is filled with a liquid and of which an inside volume is changed due to the displacement of the piezoelectric element; a nozzle that communicates with the cavity and is capable of discharging the liquid; a charge source that supplies a charge to the piezoelectric element; and a connection path selecting section that causes the piezoelectric element and the charge source to be electrically connected to each other by using a first signal path or a second signal path. The charge source includes: a first auxiliary power source that outputs two types or more of voltages; and a second auxiliary power source that outputs three types or more of voltages by using the two types or more of voltages output from the first auxiliary power source..

06/23/16
20160182011 

Acoustic resonator having integrated lateral feature and temperature compensation feature


A bulk acoustic wave (baw) resonator device includes a bottom electrode on a substrate over one of a cavity and an acoustic mirror, a piezoelectric layer on the bottom electrode, a top electrode on the piezoelectric layer, and a temperature compensation feature having positive temperature coefficient for offsetting at least a portion of a negative temperature coefficient of the piezoelectric layer. At least one of the bottom electrode and the top electrode includes an integrated lateral feature configured to create at least one of a cut-off frequency mismatch and an acoustic impedance mismatch..

06/23/16
20160182010 

Acoustic wave device


An acoustic wave device includes: a piezoelectric substrate; and an idt formed on the piezoelectric substrate, wherein an anisotropy coefficient is positive, an overlap region where electrode fingers of the idt overlap each other includes a center region and an edge region, the electrode fingers in the center and edge regions are continuously formed, the electrode finger in the edge region is inclined with respect to the electrode finger in the center region so that a pitch in a width direction of the electrode finger in the edge region is greater than a pitch in a width direction of the electrode finger in the center region, and an angle between the width direction in the center region and a crystal axis orientation of the piezoelectric substrate is less than an angle between the width direction in the edge region and the crystal axis orientation.. .

06/23/16
20160182009 

Plate wave devices with wave confinement structures and fabrication methods


A micro-electrical-mechanical system (mems) guided wave device includes a single crystal piezoelectric layer and at least one guided wave confinement structure configured to confine a laterally excited wave in the single crystal piezoelectric layer. A bonded interface is provided between the single crystal piezoelectric layer and at least one underlying layer.

06/23/16
20160182008 

Multi-frequency guided wave devices and fabrication methods


A micro-electrical-mechanical system (mems) guided wave device includes a piezoelectric layer including multiple thinned regions of different thicknesses each bounding in part a different recess, different groups of electrodes on or adjacent to different thinned regions and arranged for transduction of lateral acoustic waves of different wavelengths in the different thinned regions, and at least one bonded interface between the piezoelectric layer and a substrate. Optionally, a buffer layer may be intermediately bonded between the piezoelectric layer and the substrate.

06/23/16
20160182007 

Plate wave devices with wave confinement structures and fabrication methods


A micro-electrical-mechanical system (mems) guided wave device includes a single crystal piezoelectric layer and at least one guided wave confinement structure configured to confine a laterally excited wave in the single crystal piezoelectric layer. A bonded interface is provided between the single crystal piezoelectric layer and at least one underlying layer.

06/23/16
20160181952 

Energy generating device, and manufacturing the same


An energy generating device and a method of manufacturing the same are provided. The energy generating device includes a first electrode, a metal layer, including a regular arrangement of a plurality of patterns, disposed on the first electrode, an organic material layer positioned on the metal layer, and a piezoelectric layer interposed between the first electrode and the organic material layer..

06/23/16
20160181506 

Piezoelectric nanoparticle-polymer composite structure


Methods, systems, and devices are disclosed for implementing a stretchable nanoparticle-polymer composite foams that exhibit piezoelectric properties. In one aspect, a nanoparticle-polymer composite structure includes a curable liquid polymer; piezoelectric nanoparticles; and graphitic carbons..

06/23/16
20160181129 

Device for measuring the distribution or impulse of a series of droplets


A device for measuring the distribution and/or impulse of a series of droplets comprises a piezoelectric sensor positioned relative to a source of droplets such that each of a plurality of droplets contacts the piezoelectric sensor in succession, thereby to generate an electrical signal. Logic circuitry is configured to calculate one or more frequencies from the electrical signal..

06/23/16
20160179276 

Pressure-sensitive touch panel


An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (f), a touch panel (29), and a front end module (3).

06/23/16
20160178618 

3d tissue model for spatially correlated analysis of biochemical, physiological and metabolic micro-environments


Disclosed is a perfusion device and methods of use including a generally cylindrical body and a packed bed of nanosensor-cell embedded matrix spheres (nanocems) disposed between layers of inert microspheres. A concentration of a molecule of interest can be established within the perfusion device to effect the cellular and chemical microenvironment of the nanocems, the nanocems in turn creating their own concentration gradients nutrients and waste products in response, which can be measured by nanosensors.

06/16/16
20160173991 

Electronic apparatus


An electronic apparatus comprises a housing exposed outside, a piezoelectric vibration element located inside the housing a vibration part having the piezoelectric vibration element in a main surface thereof to be vibrated by the piezoelectric vibration element to generate a sound, and a shock-absorbing part being in contact with the main surface and away from a peripheral edge of the main surface, the piezoelectric vibration element intervening between the shock-absorbing part and the peripheral edge.. .
Kyocera Corporation


06/16/16
20160173006 

Piezoelectric energy harvesting array and manufacturing the same


The inventive concept discloses a piezoelectric energy harvesting array and a method of manufacturing the same. The manufacturing method may include forming a plurality of piezoelectric energy harvesting devices; connecting masses to one side of the piezoelectric energy harvesting devices and connecting the other side of the piezoelectric energy harvesting devices facing the masses to a base; and individually tuning a resonant frequency of each of the piezoelectric energy harvesting devices to prevent mismatch of resonant frequency when the masses vibrate..
Electronics And Telecommunications Research Institute


06/16/16
20160172578 

Method for producing a flexible piezoelectric sensor


A method for producing a piezoelectric sensor, includes the following steps: producing, on a rigid support (10), a stack of sensor layers (2, 4, 5, 12), the sensor layers including a layer of piezoelectric material (5) included between a first electrode (6, 7) and a second electrode (8, 9), the first electrode not being in contact with the second electrode, then, while the sensor layers (2, 4, 5, 12) are still held by the rigid support (10), covering the sensor layers with a polymer layer (11), then removing the stack of sensor layers from the rigid support (10), such that the sensor layers covered by the polymer layer (11) are no longer carried by the rigid support (10).. .
Bodycap


06/16/16
20160172577 

Method for fabricating piezoelectric transducer


A method for fabricating a piezoelectric transducer is provided. The method includes providing a substrate on which a plurality of patterned electrodes are formed; providing a piezoelectric suspension, having a plurality of piezoelectric particles, on the substrate and the plurality of patterned electrodes; applying a voltage between the plurality of patterned electrodes to produce an electric field; and depositing the plurality of piezoelectric particles of the piezoelectric suspension on at least one of the plurality of patterned electrodes by the electric field to form a patterned piezoelectric membrane, and polarizing the piezoelectric membrane by the electric field..
National Tsing Hua University


06/16/16
20160172576 

Twin engineering to improve the switchability and rotatability of polarizations and domains in ferroelectric and piezoelectric materials


A method and device for forming deformation crystal twins in piezoelectric materials that includes deforming and heating the piezoelectric material in an oxidative atmosphere to a predetermined temperature for a predetermined time. The crystalline piezoelectric material is then allowed to cool to room temperature and the deformation is removed..
The Hong Kong University Of Science And Technology


06/16/16
20160172575 

Conductive paste for internal electrode, piezoelectric element, and piezoelectric vibration module including the same


A conductive paste for an internal electrode includes a conductive material; and a common material comprising a dielectric substance and a eutectic mixture, wherein the eutectic mixture comprises lead oxide (pbo) and copper oxide (cuo) and has a eutectic temperature that is higher than a sintering temperature of the conductive material.. .
Samsung Electro-mechanics Co., Ltd.


06/16/16
20160172574 

Piezoelectric thin film device and manufacturing the same


A piezoelectric device that includes a piezoelectric film, which is formed by a sputtering method and which has a columnar structure, and electrodes disposed in contact with the piezoelectric film. The piezoelectric film has a composition containing an element which can substitute nb and has an oxidation number of 2 or more and less than 5 when oxidized in a proportion of 3.3 mol or less relative to 100 mol of potassium sodium niobate represented by a general formula (k1-xnax)nbo3, where 0<x<1..
Murata Manufacturing Co., Ltd.


06/16/16
20160172573 

Laterally coupled multi-mode monolithic filter


A laterally coupled multi-mode monolithic filter includes: a substrate; a piezoelectric film formed on the substrate; a ground electrode formed on a first surface of the piezoelectric film; and signal electrodes formed on a second surface of the piezoelectric film and arranged in parallel to each other, the second surface being opposite to the first surface, each of the signal electrodes including a first electrode finger and a second electrode finger, wherein the first electrode finger and the second electrode finger have different electric potentials; adjacent signal electrodes of the signal electrodes are at a distance from each other, the distance being greater than a pitch of the first electrode finger and the second electrode finger.. .
Taiyo Yuden Co., Ltd.


06/16/16
20160171995 

Piezoelectric disk drive suspension motors having plated stiffeners


Various embodiments concern a gimbaled flexure having a dual stage actuation structure. The flexure comprises a gimbal on which a motor is mounted.
Hutchinson Technology Incorporated


06/16/16
20160171270 

Acoustic wave fingerprint recognition unit and manufacturing thereof


The present disclosure provides an acoustic wave fingerprint recognition unit including a sensor circuit substrate, a film adhesive layer positioned on the sensor circuit substrate, a piezoelectric material layer positioned on the film adhesive layer and a protection layer positioned on the piezoelectric material layer. The film adhesive layer is formed of a film adhesive material, and the film adhesive material is composed of a film adhesive agent and an organic solvent.
General Interface Solution Limited


06/16/16
20160170539 

Vibrating device and electronic device using same


In an embodiment, a surface of a smartphone 10 is covered with a transparent protective panel 22 supported by rims 16 of a housing 12, and a display device 18 and touch panel 20 are placed in a storage part 14 of the housing 12. The protective panel 22 is constituted by joining a glass plate 22a and resin plate 22b together, and concave parts 30a, 30b are provided on the joining surface side of the resin plate 22b, with piezoelectric vibrating elements 40 placed therein and joined to the glass plate 22a, wherein vibration is transmitted to the surface of the protective panel 22 as surface acoustic waves, demonstrating a haptic function, and also, audible vibration is generated because the modulus of elasticity of the resin plate 22b is lower than that of the glass plate 22a, achieving an operation as a speaker (or receiver)..
Taiyo Yuden Co., Ltd.


06/16/16
20160169822 

Nanotipped device and method


A dispensing device has a cantilever comprising a plurality of thin films arranged relative to one another to define a microchannel in the cantilever and to define at least portions of a dispensing microtip proximate an end of the cantilever and communicated to the microchannel to receive material therefrom. The microchannel is communicated to a reservoir that supplies material to the microchannel.
Northwestern University


06/16/16
20160169753 

Press detecting sensor


A press detecting sensor that includes an operation receiving member and a piezoelectric sensor. The operation receiving member is a multilayer rigid plate including a cover glass, a touch sensor and a display panel fixed via first bonding agents.
Murata Manufacturing Co., Ltd.


06/16/16
20160169180 

Integrated fuel injector ignitor having a preloaded piezoelectric actuator


A fluid injection system and associated systems and methods are described herein. A fluid injection system configured in accordance with an embodiment of the present technology can include, for example, a housing with a fluid inlet port and a fluid outlet port, a fluid metering valve, a valve seat having a valve seat component, and a valve actuator to axially move the metering valve from a seat in the valve seat component from a closed to an open position.
Mcalister Technologies, Llc




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

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