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


Film bulk acoustic wave resonator (fbar) having stress-relief

Avago Technologies General Ip (singapore) Pte.

Film bulk acoustic wave resonator (fbar) having stress-relief

Plezoelectric generator for supplying power to portable terminal

Korea Electronics Technology Institute

Plezoelectric generator for supplying power to portable terminal

Plezoelectric generator for supplying power to portable terminal

Hm Energy

Surface acoustic wave transponder package for down-hole applications


Date/App# patent app List of recent Piezo-related patents
07/23/15
20150207490 
 Piezoelectric thin film resonator, filter and duplexer patent thumbnailPiezoelectric thin film resonator, filter and duplexer
A piezoelectric thin film resonator includes: a substrate; a piezoelectric film provided on the substrate; a lower electrode and an upper electrode that are opposed to each other to put at least a part of the piezoelectric film therebetween; and an insertion film that is inserted into the piezoelectric film in a resonance region where at least the part of the piezoelectric film is put between the lower electrode and the upper electrode, at least a part of the insertion film corresponding to an outer circumference region in the resonance region being thicker than a part of the insertion film corresponding to a central region in the resonance region.. .
Taiyo Yuden Co., Ltd.


07/23/15
20150207489 
 Film bulk acoustic wave resonator (fbar) having stress-relief patent thumbnailFilm bulk acoustic wave resonator (fbar) having stress-relief
An acoustic resonator structure comprises: a substrate having a cavity, which has a plurality of sides; a first electrode disposed over the cavity; a piezoelectric layer disposed over a portion of the first electrode and extending over at least one of the sides; and a second electrode disposed over the piezoelectric layer, an overlap of the first electrode, the piezoelectric layer and the second electrode forming an active area of the fbar. The active area of the fbar is completely suspended over the cavity..
Avago Technologies General Ip (singapore) Pte. Ltd.


07/23/15
20150207436 
 Plezoelectric generator for supplying power to portable terminal patent thumbnailPlezoelectric generator for supplying power to portable terminal
A piezoelectric generator for power supply of a portable terminal is provided. The piezoelectric generator includes: a portable terminal case which has a battery mounting part formed on one surface thereof and has parts of the portable terminal mounted therein; a slide part which is formed on opposite side surfaces of a border of the portable terminal case to be able to slide up and down; and a piezoelectric body which has one end or opposite ends connected with the slide part and is disposed in the battery mounting part in a transverse direction, and which vibrates by a sliding movement of the slide part..
Korea Electronics Technology Institute


07/23/15
20150207204 
 Surface acoustic wave transponder package for down-hole applications patent thumbnailSurface acoustic wave transponder package for down-hole applications
A method and apparatus for packaging surface acoustic wave transponders for use in down-hole or other extreme environmental applications. An exemplary id tag transponder may include a surface acoustic wave (saw) piezoelectric device, wire bonds, antennae structure, an antenna reflector, a radome, and a base constructed of a conductive, non-magnetic metal or metal alloy adapted to withstand an extreme environment encountered in down-hole applications.
Hm Energy, Llc


07/23/15
20150207057 
 Thin film piezoelectric element, thin film piezoelectric actuator, and thin film piezoelectric sensor; and hard disk drive, and inkjet printer patent thumbnailThin film piezoelectric element, thin film piezoelectric actuator, and thin film piezoelectric sensor; and hard disk drive, and inkjet printer
An object is to increase the amount of displacement of a thin-film piezoelectric element including a piezoelectric thin film having an uneven-shaped contact surface with the planar shape and the layer structure of the thin-film piezoelectric element kept unchanged. The thin-film piezoelectric element includes a pair of electrode layers and a piezoelectric thin film sandwiched between the pair of electrode layers, in which a surface roughness p-v of an interface between the piezoelectric thin film and at least one of the pair of electrode layers is 220 nm or more and 500 nm or less..
Tdk Corporation


07/23/15
20150206657 
 Integrated magnetic devices with multi-axial magnetic anisotropy patent thumbnailIntegrated magnetic devices with multi-axial magnetic anisotropy
A method of fabricating in-plane or out-of-plane thin-film multi-axial magnetic anisotropy devices is provided that includes either depositing a magnetic material with perpendicular or partially perpendicular anisotropy patterned into a multi-directional, curved, or closed path or depositing a thin-film of magnetic material on a piezoelectric material, where the magnetic material is arranged in a pattern, depositing excitation electrodes on the piezoelectric material, where the excitation electrodes are arranged in a pattern, biasing the piezoelectric material, by applying a voltage across the excitation electrodes, where an electric field through the piezoelectric material is generated by the applied voltage across the excitation electrodes, where the piezoelectric material is biased by the electric field to provide stress to the magnetic material, where the stress rotates a magnetization of the magnetic material, and patterning the magnetic material into a multi-directional, curved, or closed path.. .
The Board Of Trustees Of The Leland Stanford Junior University


07/23/15
20150205050 
 Optical fiber scanner patent thumbnailOptical fiber scanner
The force of a piezoelectric element is efficiently transferred to an optical fiber without attenuation, so that the vibration of the optical fiber becomes large. Provided is an optical fiber scanner including an optical fiber which has an elongated cylindrical shape in which illumination light emitted from a light source is guided and can emerge from a distal end thereof and whose distal end can be vibrated in a direction intersecting the longitudinal direction thereof; and at least one piezoelectric element which have a plate shape polarized in a thickness direction thereof and which are separately bonded to an outer circumferential surface of the optical fiber closer to a base side than to a distal end thereof..
Olympus Corporation


07/23/15
20150204750 
 Non-resonant knock sensor patent thumbnailNon-resonant knock sensor
A non-resonant knock sensor includes: a sensor body having a metal shell provided with a shell-side cylindrical portion and a shell-side flange portion, a piezoelectric element, a weight arranged to hold the piezoelectric element between the shell-side flange portion and the weight and a fixing member having a third through hole through which the shell-side cylindrical portion is inserted and being arranged to press the weight toward the shell-side flange portion and thereby fix the weight in position; and a resin molded part. The fixing member has formed therein flow paths for introducing a resin into an inner space between the shell-side cylindrical portion and the piezoelectric element.
Ngk Spark Plug Co., Ltd.


07/23/15
20150204742 
 Force moment sensor patent thumbnailForce moment sensor
A force moment sensor for sensing forces and moments in a system through which forces and moments are transferred from an input member to an output member is disclosed. It includes a housing, an inner tube, a load plate, a plurality of elongate connectors and a plurality of dynamic deflection measuring devices.
Good Vibrations Engineering Ltd.


07/23/15
20150203345 
 Polymer anchored microelectromechanical system (mems) cantilever and  fabricating the same patent thumbnailPolymer anchored microelectromechanical system (mems) cantilever and fabricating the same
A microelectromechanical system (mems) cantilever includes a base and a cantilever beam projecting from the base. The cantilever beam includes a piezo layer sandwiched between an inorganic material structural layer and an inorganic material encapsulating and immobilising layer.
Indian Institute Of Technology, Bombay


07/23/15
20150202873 

Liquid discharge manufacturing liquid discharge apparatus


There is provided a liquid discharge apparatus including a channel structure in which liquid channels including pressure chambers and nozzles are formed and a piezoelectric actuator including a piezoelectric layer arranged on the channel structure to cover the pressure chambers. Two grooves are formed in the piezoelectric layer to locate on two sides of each pressure chamber in an array direction.
Brother Kogyo Kabushiki Kaisha


07/23/15
20150202872 

Liquid discharge apparatus and liquid discharge state detecting method


An ink jet printer is provided with discharge heads configured to discharge ink which is filled into a cavity from a nozzle which is linked with a cavity due to the capacity of the cavity changing according to vibrating of a vibration plate which is vibrated by a piezoelectric element, a head driver configured to drive the piezoelectric element, and a detecting section configured to detect the state of the discharge heads. The detecting section is configured to detect the state of the discharge heads within a specific period of time after driving of the piezoelectric element is stopped..
Seiko Epson Corporation


07/23/15
20150202871 

Piezoelectric inkjet die stack


A piezoelectric inkjet die stack includes a printhead substrate die, a pedestal seated on the printhead substrate die, a fluidics die seated atop the pedestal, and integrated circuit (ic) dies seated on the printhead substrate die. The ic dies may be positioned substantially but not completely beneath the fluidics die and positioned on either side of the pedestal such that air gaps exist between a top surface of each ic die and a bottom surface of the fluidics die and between each ic die and the pedestal.
Hewlett-packard Development Company, L.p.


07/16/15
20150201281 

Acoustic generator, acoustic generation device, and electronic device


An acoustic generator according to an aspect of an embodiment includes a frame, a vibration body, and a piezoelectric vibration element. The vibration body is provided at an inner side of the frame.
Kyocera Corporation


07/16/15
20150200647 

Piezoelectric vibration component


A piezoelectric vibration component that includes a sealed space formed between first and second package members, and a piezoelectric vibrator is bonded to the first package member with first and second conductive adhesive portions. In the piezoelectric vibrator, a first vibration electrode and a first extended electrode are formed on a first surface of a piezoelectric substrate, and a second vibration electrode and a second extended electrode are formed on a second surface of the piezoelectric substrate.
Murata Manufacturing Co., Ltd.


07/16/15
20150200352 

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus


A piezoelectric element comprises a piezoelectric layer made of a perovskite compound containing sodium, potassium, lithium, niobium and tantalum and bismuth manganate and electrodes for applying a voltage to the piezoelectric layer.. .
Seiko Epson Corporation


07/16/15
20150200351 

Flexible piezoelectric material, production and use thereof


A composite piezoelectric material, manufacturing of the composite material and use of this composite material in piezoelectric components are disclosed. More particularly, a piezoelectric thick film materials or piezoelectric paint being a composite piezoelectric material including piezoelectric particles randomly dispersed within a polymer matrix are disclosed.
Meggitt A/s


07/16/15
20150200350 

Method, apparatus and system for a transferable micromachined piezoelectric transducer array


Techniques and mechanisms to provide mechanical support for a micromachined piezoelectric transducer array. In an embodiment, a transducer array includes transducer elements each comprising a respective membrane portion and a respective supporting structure disposed on or around a periphery of that membrane portion.

07/16/15
20150200349 

Piezoelectric actuator control for high rate of operation


Described herein are methods for controlling a piezoelectric element, for example, for use in a fuel injector, safely and efficiently at higher frequencies without causing damage to the fuel injector due to excessive heating. Methods incorporating features of the present invention can utilize waveform generation, waveform scaling and power amplification to drive a piezoelectric element.
Transonic Combustion, Inc.


07/16/15
20150200235 

Organic light emitting diode display device and manufacturing method thereof


An organic light emitting diode display and a manufacturing method thereof are disclosed. The organic light emitting diode display includes: a flexible upper substrate; a first piezoelectric material layer and a second piezoelectric material layer formed inside the upper substrate; a pair of first electrodes brought into contact with the first piezoelectric material layer; a pair of second electrodes brought into contact with the second piezoelectric material layer; a flexible lower substrate disposed to face the upper substrate, and to have an organic light emission layer; and an opposed electrode disposed to protrude toward an inner side of the lower substrate and to face the pair of second electrodes, wherein a first sensor includes the first piezoelectric material layer and the pair of first electrodes, and a second sensor includes the second piezoelectric material layer, the pair of second electrodes, and the opposed electrode..
Samsung Display Co., Ltd.


07/16/15
20150199061 

Push amount detecting sensor and touch input device


A touch input device includes a touch panel, a push amount calculating unit and a touch detection signal generating unit. The touch panel includes piezoelectric and electrostatic sensors.
Murata Manufacturing Co., Ltd.


07/16/15
20150198801 

Mirror driving device and driving same


A mirror driving device is provided. A pair of piezoelectric actuator units are disposed at both sides of a mirror unit so as to sandwich the mirror unit, and each piezoelectric actuator unit is connected with an end portion of the mirror unit through a linking unit.
Fujifilm Corporation


07/16/15
20150198699 

Ultrasonic imaging with acoustic resonant cavity


Techniques describe structures and methods for generating larger output signals and improving image quality of ultrasonic sensors by inclusion of an acoustic cavity in the sensor stack. In some embodiments, an ultrasonic sensor unit may be tuned during manufacturing or during a provisioning phase to work with different thicknesses and materials.
Qualcomm Incorporated


07/16/15
20150198681 

Method for transporting an nmr sample spaced horizontally and vertically from a cryo-magnetic system using a vibration isolated motorized curvilinear transport carrier with dual end-effector and telescoping the carrier to different cryo-magnetic systems at different heights


An electro-mechanical curvilinear transport carrier is used for transporting an nmr sample (3) spaced horizontally and vertically from the input point (a) to the supply point (b). The sample (3) contains an nmr sample test tube (1) inserted into a container (2).

07/16/15
20150198564 

Ultrasonic device, ultrasonic transducer device, electronic device and ultrasonic imaging device


An ultrasonic device which includes a substrate, a first ultrasonic transducer element and a second ultrasonic transducer element. The substrate is provided with a plurality of first openings and a second opening having a larger opening area than the first opening.
Seiko Epson Corporation


07/16/15
20150198562 

Piezoelectric unit, piezoelectric device, piezoelectric determination apparatus, and state determination method


A piezoelectric unit 1 includes a piezoelectric element that causes thickness shear vibration, a first electrode provided on one surface of the piezoelectric element, a second electrode and a third electrode which are provided on an opposite surface to the one surface which is provided with the first electrode of the piezoelectric element and are electrically insulated from each other, and a switching portion that is connected to the first electrode, the second electrode, and the third electrode, in which the switching portion can switch measurement modes between a mass/viscoelasticity measurement mode for measuring mass of a substance which is in contact with the piezoelectric element or viscoelasticity by vibrating the piezoelectric element, and an electrical characteristic measurement mode for measuring electrical characteristics between the second electrode and the third electrode.. .
Seiko Instruments Inc.


07/16/15
20150198169 

Synthetic jets in compressors


A synthetic jet for a stationary vane for a turbo-machine is disclosed. The synthetic jet includes a backside cavity and a jet cavity.
Solar Turbines Incorporated


07/16/15
20150198139 

Adaptive hydrokinetic energy harvesting system


An adaptive system for harvesting hydrokinetic energy from flowing fluid uses a hydrofoil-type vane in a flow-way and an electrical power generator to convert torque generated by the oscillating vane to electrical current. The generator may be electromagnetic or piezoelectric.
Sigma Design Company


07/16/15
20150198033 

In-well piezoelectric devices to transmit signals


A wellbore system includes a first piezoelectric device on a first side of a wall and a second piezoelectric device on a second side of the wall. The second piezoelectric device is adapted to communicate through the wall wirelessly with the first piezoelectric device..
Halliburton Energy Services, Inc.


07/16/15
20150197084 

Liquid discharge apparatus, head unit, and control liquid discharge apparatus


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..
Seiko Epson Corporation


07/16/15
20150197083 

Liquid discharge apparatus, head unit, and control liquid discharge apparatus


A liquid discharge apparatus includes: an original drive signal generator that generates a plurality of original drive signals which includes a first original drive signal and a second original drive signal; a selection section that is capable of selecting one original drive signal from the plurality of original drive signals which includes the first original drive signal and the second original drive signal; a driver that generates a drive signal of voltages in accordance with the one original drive signal; a piezoelectric element that is displaced according to the drive signal; a cavity of which an inside volume is changed due to the displacement of the piezoelectric element; and a nozzle that is provided to discharge a liquid in the cavity according to the change of the inside volume of the cavity.. .
Seiko Epson Corporation


07/09/15
20150195657 

Acoustic generator, acoustic generation device, and electronic device


An acoustic generator according to one embodiment includes a piezoelectric element (exciter), a vibrating portion, and a plurality of dampers. The piezoelectric element receives an input of an electrical signal and is caused to vibrate.
Kyocera Corporation


07/09/15
20150194948 

Elastic wave device and manufacturing method thereof


In an elastic wave device, a first electrode structure and a second electrode structure are provided on a piezoelectric substrate. The first electrode structure and the second electrode structure define first and second elastic wave element portions, respectively.
Murata Manufacturing Co., Ltd.


07/09/15
20150194947 

Elastic wave device and manufacturing method thereof


In an elastic wave device, a first electrode structure and a second electrode structure are provided on a piezoelectric substrate, first and second elastic wave element portions are configured by the first electrode structure and the second electrode structure, respectively, and a first bump that is configured of a conductive material to provide shielding is provided on an electrode formation surface of the piezoelectric substrate between the first elastic wave element portion and the second elastic wave element portion.. .
Murata Manufacturing Co., Ltd.


07/09/15
20150194910 

Hybrid power generating device


A hybrid power generating device can include: a first substrate; a lower electrode layer disposed on the first substrate; a piezoelectric layer disposed on the lower electrode layer, and formed of a complex in which an inorganic piezoelectric material and an organic polymer matrix are mixed; a spacer disposed on the piezoelectric layer; an upper electrode layer disposed on the spacer and configured to rub against the piezoelectric layer so as to be charged along with the piezoelectric layer; and a second substrate disposed on the upper electrode layer.. .
Research & Business Foundation Sungkyunkwan University


07/09/15
20150194594 

Piezoelectric material and piezoelectric element using the same, and electronic apparatus using the piezoelectronic element


Provided is a lead-free piezoelectric material having a high curie temperature, a satisfactory mechanical quality factor, and a satisfactory young's modulus, and a piezoelectric element and a multilayered piezoelectric element each using the piezoelectric material. The piezoelectric material contains 0.04 mol % or more to 2.00 mol % or less of cu with respect to 1 mol of a perovskite-type metal oxide represented by the following general formula: (kvbiwba1-v-w)1-ynax(nbyti1-y)o3 where relationships of 0<v≦0.39, 0<w≦0.39, 0.9≦w/v≦1.1, 0.80≦x≦0.95, and 0.85≦y≦0.95 are satisfied..
Canon Kabushiki Kaisha


07/09/15
20150194593 

Piezoelectric vibration module


Embodiments of the invention provide a piezoelectric vibration module, including a vibration plate mounted with a piezoelectric element, which generates a vibration force in a vertical direction by being repeatedly expanded and contracted depending on external power applied thereto, and a lower case coupled with both ends of the vibration plate so as to be spaced apart from the vibration plate. The piezoelectric vibration module further includes a bar-shaped weight body increasing the vibration force of the piezoelectric element, and an elastic member interposed between the vibration plate and the weight body..
Samsung Electro-mechanics Co., Ltd.


07/09/15
20150194592 

Piezoelectric element, piezoelectric actuator, piezoelectric sensor, hard disk drive, and inkjet printer device


An object is to reduce the leakage current of a piezoelectric element including a potassium-sodium niobate thin film, enhance the reliability of the piezoelectric element and, in addition, enhance the withstand voltage by including a pair of electrodes and a piezoelectric layer sandwiched between the above-described pair of electrode layers, wherein the above-described piezoelectric layer is provided with at least one layer each of first piezoelectric layer which is a potassium-sodium niobate thin film substantially not containing mn (manganese) and second piezoelectric layer which is a potassium-sodium niobate thin film containing mn.. .
Tdk Corporation


07/09/15
20150194591 

Piezoelectric device and using same


A piezoelectric device, which has bipolar polarization-electric field (pr-e) hysteresis characteristics of a piezoelectric material asymmetrically biased, when a first and second coercive electric fields respectively having smaller and larger absolute values are defined as ec1 and ec2 and a bias ratio of the coercive electric field is defined as [(ec2+ec1)/(ec2−ec1)]×100[%], includes a piezoelectric element unit including a piezoelectric body film whose bias ratio is 20% or more, the piezoelectric element unit operating with an electric field intensity smaller than that of the first coercive electric field. The piezoelectric device includes a refresh voltage applying circuit configured to apply a voltage to maintain operation performance of the relevant device, the voltage having an electric field intensity larger than the electric field intensity for operating the device and being equal to or less than three times .
ec1


07/09/15
20150194560 

Stressed semiconductor detector with piezoelectrical component


A semiconductor detector device comprising: a detector element comprising at least one active detector layer of piezoelectric semiconductor material; a stress inducing element arranged to act in use on the detector element to generate therein a predetermined pattern of stress, and consequently a predetermined electrical field via the piezoelectric effect. A method of fabrication and of operation of a semiconductor detector device embodying these principles are also described..
Kromek Limited


07/09/15
20150193055 

Touch panel


A touch panel that includes a dielectric film and a piezoelectric film. A first capacitance detection electrode is disposed on an upper main surface of the dielectric film, a second capacitance detection electrode and a first piezoelectric voltage detection electrode are disposed between a lower main surface of the dielectric film and an upper main surface of the piezoelectric film, and a second piezoelectric voltage detection electrode is disposed on a lower main surface of the piezoelectric film.
Murata Manufacturing Co., Ltd.


07/09/15
20150192546 

Control of entities such as droplets and cells using acoustic waves


The present invention generally relates to manipulation of entities using acoustic waves. For example, by applying acoustic waves to a surface containing entities such as particles, cells, droplets, etc., the entities may be manipulated in various ways on the surface.
Universität Augsburg


07/09/15
20150192482 

Pressing force sensor


A pressing force sensor that includes a sensor element configured with a piezoelectric film, a lead terminal for connection to an external circuit, a wiring conductor which connects pressing force detection electrodes and the lead terminal, and a flexible printed circuit board which withstands solder reflow temperatures. The flexible printed circuit board has the pressing force detection electrodes formed on a first principal surface thereof, and is folded via a folding line while the first principal surface faces inward.
Murata Manufacturing Co., Ltd.


07/09/15
20150192119 

Piezoelectric blower


Embodiments of the invention provide a piezoelectric blower, including a first diaphragm comprising a first piezoelectric element disposed at an outer surface thereof, a second diaphragm comprising a second piezoelectric element disposed at the outer surface thereof and disposed to be spaced, in parallel, apart from the first diaphragm, and a rim disposed along circumferences of an edge of the first diaphragm and an edge of the second diaphragm. The piezoelectric blower further includes a blower chamber defined by the first diaphragm, the second diaphragm, and the rim, and an opening through which air is sucked and discharged into and from a blower chamber..
Samsung Electro-mechanics Co., Ltd.


07/09/15
20150191716 

Acoustophoresis device with dual acoustophoretic chamber


An acoustophoresis device includes an acoustic chamber with a piezoelectric element located within its volume. The piezoelectric element vibrates and generates acoustic standing waves from both sides, so that particles can be separated from fluid passing through the acoustic chamber.
Flodesign Sonics, Inc.


07/09/15
20150191008 

Print device and print method


A print device is configured to perform printing by an ink jet scheme including: an ink jet head including a nozzle, an ink chamber that stores ink droplets at an upstream of the nozzle, and a piezoelectric element; and a drive signal output section that outputs a drive signal for causing the piezoelectric element to be displaced. The drive signal includes a discharge driving signal for causing the piezoelectric element displaced so that ink droplets are discharged from the nozzle, and a post-discharge controlling signal for causing the piezoelectric element displaced after the ink droplets are discharged from the nozzle, the drive signal output section outputs the discharge driving signal by which a voltage changes linearly from a first voltage to a second voltage which are predeterminedly set, at a timing when the ink droplets are to be discharged from the nozzle, and outputs a substantial sine wave..
Mimaki Engineering Co., Ltd.,


07/09/15
20150190116 

Ultrasonic probe


Disclosed herein is an ultrasonic probe. The ultrasonic probe includes a matching layer having flexibility, a piezoelectric layer disposed on the bottom surface of the matching layer and having flexibility, a first backing layer disposed on the bottom surface of the piezoelectric layer and having flexibility, a second backing layer disposed on the bottom surface of the first backing layer and including a plurality of backing material layers stacked perpendicularly to the first backing layer, and second backing layer adjusting units respectively disposed between every two of the plurality of the stacked backing material layers of the second backing layer and changing the shape of the backing material layers..
Samsung Medison Co., Ltd.


07/09/15
20150190113 

Optical-acoustic imaging device


The present invention is a guide wire imaging device for vascular or non-vascular imaging utilizing optic acoustical methods, which device has a profile of less than 1 mm in diameter. The ultrasound imaging device of the invention comprises a single mode optical fiber with at least one bragg grating, and a piezoelectric or piezo-ceramic jacket, which device may achieve omnidirectional (360°) imaging.
Vascular Imagin Corporation


07/02/15
20150189429 

Method and the production of sound using a slackline


A method and apparatus for the production of sound that may be in the form of musical tones using a slackline as the vibrational sound source and a vibrational tracking clip with an electroacoustic transducer such as a microphone, pickup or piezoelectric crystal mounted in close proximity to the slackline to transmit the vibrational sound waves from the slackline to an amplifier, a computer, tablet, mobile device, a digital recording system or other digital device and speaker to record, playback and/or modify the sound using sound effect systems and/or software applications. The present invention is further related to a vibrational inducement apparatus to induce a vibration in the slackline and tone conditioning software applications implemented on a digital device having a microprocessor, memory and storage and a measuring device that measures distance, angles, position and/or movement and translates sound signals to musical tones based on these measurements..

07/02/15
20150188507 

Acoustic wave device and manufacturing the same


A method for manufacturing an acoustic wave device includes: forming an altered domain in a supporting substrate by irradiating the supporting substrate with a laser light, a piezoelectric substrate being joined to an upper surface of the supporting substrate; forming a groove on an upper surface of the piezoelectric substrate so as to overlap with the altered domain; and cutting the supporting substrate at the groove.. .
Taiyo Yuden Co., Ltd.


07/02/15
20150188458 

Piezoelectric energy harvester device with a stopper structure, system, and methods of use and making


The present invention relates to an energy harvester device comprising an elongate resonator beam comprising a piezoelectric material, the resonator beam extending between first and second ends; a base connected to the resonator beam at the first end with the second end being freely extending from the base as a cantilever; a mass attached to the second end of the resonator beam; a package surrounding at least a portion of the second end of the resonator beam; and a stopper connected to the mass and/or the second end of the resonator beam, where the stopper is configured to prevent contact between the second end of the resonator beam and the package. Also disclosed is a system, a method of powering an electrically powered apparatus, and methods of producing an anergy harvester device..
Microgen Systems, Inc.


07/02/15
20150188457 

Power generation unit, electronic apparatus, transportation device, and controlling power generation unit


A power generation unit includes a deforming member (a beam) adapted to deform while switching a deformation direction, a first piezoelectric device provided to the deforming member (the beam), a second piezoelectric device provided to the deforming member (the beam), an inductor electrically connected to the first piezoelectric device, a switch disposed between the first piezoelectric device and the inductor, and a control section adapted to detect a voltage generated in the second piezoelectric device, and if the voltage detected has a level one of equal to and higher than a predetermined level, electrically connect the first piezoelectric device and the inductor to each other using the switch.. .
Seiko Epson Corporation


07/02/15
20150188456 

Piezoelectric element driving apparatus and method, and piezoelectric system using the same


A piezoelectric element driving apparatus may apply a predetermined driving signal to a piezoelectric element to drive the piezoelectric element. The driving signal may be an asymmetrical waveform in which amplitudes of first and second polarities thereof are different from each other.
Samsung Electro-mechanics Co., Ltd.


07/02/15
20150188455 

Vibration generating apparatus


There is provided a vibration generating apparatus including: a housing having an internal space; a vibrating plate fixedly installed in the housing and having a disc shape; a piezoelectric element fixed to the vibrating plate and having a hollow disc shape; and a vibration element vibrating together with the vibrating plate when the piezoelectric element is deformed.. .
Iucf-hyu(industry-university Cooperation Foundation Hanyang University)


07/02/15
20150188032 

Electric output promoting and fabricating piezoelectric/conductive hybrid polymer thin film


A method of fabricating a piezoelectric/conductive hybrid polymer thin film is provided, which is promoting an electric output of a piezoelectric polymer and includes: a mixing step including: forming a piezoelectric solution by dissolving a pvdf-trfe in an active solvent; forming a conductive solution by dissolving a pedot:pss in a water; and forming a piezoelectric/conductive hybrid polymer solution by mixing the piezoelectric solution and the conductive solution; a filming step, wherein the piezoelectric/conductive hybrid polymer solution is heated, thus the piezoelectric/conductive hybrid polymer thin film is formed; and an anneal step, wherein the piezoelectric/conductive hybrid polymer thin film is recrystallized and a nano-sized protruding structure is formed on a surface of the piezoelectric/conductive hybrid polymer thin film.. .
National Tsing Hua University


07/02/15
20150188031 

Thermal poling method, piezoelectric film and manufacturing same, thermal poling apparatus, and inspection piezoelectric property


A thermal poling method in which a poling treatment can be performed easily by a dry process. The poling treatment is performed on a pzt film by performing a heat treatment on the pzt film under a pressurized oxygen atmosphere at a temperature of 400° c.
Youtec Co., Ltd.


07/02/15
20150188030 

Piezoelectric energy harvester device with curved sidewalls, system, and methods of use and making


The present invention relates to an energy harvester device, which includes an elongate, planar resonator beam comprising a piezoelectric material and side walls extending between first and second ends; a base connected to the resonator beam at the first end with the second end being freely extending from the base as a cantilever; and a mass attached to the second end of the resonator beam. The side walls are continuously curved within the plane of the resonator beam.
Microgen Systems, Inc.


07/02/15
20150188029 

Piezoelectric actuator module, manufacturing the same, and mems sensor having the same


Embodiments of the invention provide a method of manufacturing a piezoelectric actuator module. The method includes the steps of depositing a second piezoelectric material on one surface of a support layer in a second temperature section, and depositing a first piezoelectric material in a first temperature section to be stacked on the second piezoelectric material.
Samsung Electro-mechanics Co., Ltd.


07/02/15
20150188028 

Self-powered generator, fabricating the same and piezoelectric enery-harvesting device using the generator


A self-powered generator is provided. The generator includes a piezoelectric nanorod member layer that includes a first layer; a second layer; and a plurality of piezoelectric nanorods disposed between the first and second layers.
Industry-academic Cooperation Foundation, Yonsei University


07/02/15
20150188027 

Vibrator


There is provided a vibrator including: an elastic member of which both end portions are fixedly attached to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board attached to the elastic member to be connected to the piezoelectric element, wherein an opening portion for a connection between the piezoelectric element and the circuit board is provided in the elastic member, and a step portion insertedly disposed in the opening portion is formed at the circuit board.. .
Samsung Electro-mechanics Co., Ltd.


07/02/15
20150188026 

Induction of force performed by the piezoelectric materials


Until now, the direct effect or the converse effect is used in piezoelectric devices to provide respectively a disturbance force in external objects via electric field or acoustic waves. The collective displacement of the internal polarized molecules of the piezoelectric materials can be used in innovative ways when the direct or the converse effect takes place.

07/02/15
20150188023 

Piezoelectric device and circuitry


The present disclosure provides a device having a circuit. The circuit includes at least one boost converter receiving power from an energy source, a square wave driver in series with the boost converter, an inductor in series with the square wave driver for converting a square wave to a sinusoidal wave, and a piezoelectric transducer in series with the inductor, the piezoelectric transducer connectable to a load.
Intermed, Inc.


07/02/15
20150188022 

Apparatus and driving piezoelectric actuator


An apparatus for driving a piezoelectric actuator may include a waveform synthesizing unit outputting a digital signal by using a preset lookup table, a digital to analog converting unit outputting at least one of a symmetrical waveform or an asymmetrical waveform by converting the digital signal, and a controlling unit controlling an output of the asymmetrical waveform by controlling an output of the digital to analog converting unit in response to an external input.. .
Samsung Electro-mechanics Co., Ltd.


07/02/15
20150188021 

Apparatus and driving piezoelectric actuator, and piezoelectric system using the same


An apparatus for driving a piezoelectric actuator may include a waveform synthesizing unit outputting a digital value using waveform information input from the outside, an amplifying unit amplifying an analog value corresponding to the digital value, a voltage supplying unit generating an amplified voltage by amplifying an external input voltage and providing the amplified voltage to the amplifying unit, and a stabilization controlling unit determining whether the amplified voltage is stabilized and controlling the waveform synthesizing unit so as to output the digital value in the case in which the amplified voltage is stabilized.. .
Samsung Electro-mechanics Co., Ltd.




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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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