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Piezoelectric patents



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


Surface acoustic wave device and filter

Taiyo Yuden

Surface acoustic wave device and filter

Vibrating device and manufacturing method therfor

Murata Manufacturing

Vibrating device and manufacturing method therfor

Vibrating device and manufacturing method therfor

Research & Business Foundation Sungkyunkwan University

Two-dimensional zinc-oxide nanosheet-based power generation device and method of fabricating the same

Date/App# patent app List of recent Piezoelectric-related patents
06/25/15
20150181338
 Stereo earphone patent thumbnailStereo earphone
There is provided is a stereo headphone provided with a pair of earphones having a cartilage conduction unit, a sheath unit connected to the cartilage conduction unit, and a piezoelectric bimorph of a vibration source connected to the cartilage conduction unit covered by the sheath unit without making contact with the inner wall thereof. The cartilage conduction unit is an elastic body.
Finewell Co., Ltd.
06/25/15
20150180451
 Surface acoustic wave device and filter patent thumbnailSurface acoustic wave device and filter
A surface acoustic wave device includes: a pair of comb-type electrodes that are provided on a piezoelectric substrate and include electrode fingers and dummy electrode fingers, the electrode fingers of one of the pair of comb-type electrodes facing the dummy electrode fingers of the other comb-type electrode; and additional films that are provided to cover gaps between tip ends of the electrode fingers and tip ends of the dummy electrode fingers and to overlap with at least one of first through third groups in which the first and second groups respectively include the electrode fingers and the dummy electrode fingers located at opposite sides of the gaps in a first direction in which the electrode fingers extend, and the third group includes the electrode fingers located at sides of the gaps in a second direction that crosses the first direction.. .
Taiyo Yuden Co., Ltd.
06/25/15
20150180449
 Vibrating device and manufacturing method therfor patent thumbnailVibrating device and manufacturing method therfor
A vibrating device having vibrating arms connected to a supporter. The vibrating arms have an n-type si layer which is a degenerated semiconductor and an exciter provided on the n-type si layer.
Murata Manufacturing Co., Ltd.
06/25/15
20150179922
 Two-dimensional zinc-oxide nanosheet-based power generation device and  fabricating the same patent thumbnailTwo-dimensional zinc-oxide nanosheet-based power generation device and fabricating the same
The present invention relates to a two-dimensional zinc-oxide nanosheet-based piezoelectric power generation device. More specifically, the present invention relates to a piezoelectric power generation device using a two-dimensional zinc-oxide nanosheet to provide high mechanical reliability and high output power..
Research & Business Foundation Sungkyunkwan University
06/25/15
20150179921
 Piezoelectric transformer patent thumbnailPiezoelectric transformer
A piezoelectric transformer that includes a piezoelectric body having driving portions and a power generating portion, an input electrode, and an output electrode. The driving portions and the power generating portion are arranged in the lengthwise direction of the piezoelectric body.
Murata Manufacturing Co., Ltd.
06/25/15
20150179920
 Piezoelectric actuator and mass flow controller provided with same patent thumbnailPiezoelectric actuator and mass flow controller provided with same
A piezoelectric actuator of the invention includes: a piezoelectric element; a base body having an upper surface which is in contact with a lower end portion of the piezoelectric element; and a case having an inner surface which is in contact with an upper end portion of the piezoelectric element, the case storing the piezoelectric element therein, the upper surface of the base body and the case being joined to each other. The case includes a cylindrical portion including a cylindrical main body and a plurality of grooves formed all around a perimeter thereof, and a collar portion disposed at a lower end side of the cylindrical portion.
Kyocera Corporation
06/25/15
20150179196
 Head gimbal assembly patent thumbnailHead gimbal assembly
A head gimbal assembly includes a suspension board with circuit, a pair of piezoelectric elements mounted on the suspension board with circuit to be expandable/contractible, and a slider on which a magnetic head is mounted and which is mounted on the suspension board with circuit and configured to be able to swing with expansion/contraction of the pair of piezoelectric elements. The pair of piezoelectric elements are placed on the suspension board with circuit such that a first imaginary line extending along an expanding/contracting direction of one of the piezoelectric elements crosses a second imaginary line extending along an expanding/contracting direction of the other piezoelectric element..
Nitto Denko Corporation
06/25/15
20150177216
 Cantilevered probe detector with piezoelectric element patent thumbnailCantilevered probe detector with piezoelectric element
A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator.
Board Of Regents Of The Nevada System Of Higher Education, On Behalf Of The University Of Nevada
06/25/15
20150177215
 Piezoelectric system for portable explosive or drug detection patent thumbnailPiezoelectric system for portable explosive or drug detection
A portable chemical analytical apparatus includes a piezoelectric dispenser that deposits chemical(s) on a test swipe having a base; a chemically treated pad containing the swiped sample positioned in a white zone above the base; and a tab attached to one side of the base. The apparatus includes a heater to warm the test swipe to a predetermined temperature; a clamp to secure the test swipe to the heater; one or more pumps to dispense one or more chemicals onto the test swipe from a disposable cartridge; a fan to remove chemical vapors rising a predetermined distance from the test swipe; and a camera to capture an image of the test swipe for un-biased automated analysis, and displayed on an lcd screen..
06/25/15
20150177197
 Ultrasonic sensor and measuring method using the same, and  manufacturing ultrasonic sensor patent thumbnailUltrasonic sensor and measuring method using the same, and manufacturing ultrasonic sensor
An ultrasonic sensor which includes a substrate where an opening section is formed, a vibration plate that is provided on the substrate so as to close the opening section, and a piezoelectric element that is layered on a surface of the vibration plate on an opposite side to the opening section and includes a first electrode, a piezoelectric element, and a second electrode, includes a reflection layer that is provided in a space around the piezoelectric element on the surface of the vibration plate on an opposite side to the opening section, to reflect other ultrasonic waves which are transmitted in a different direction from a transmitted ultrasonic wave transmitted to a measuring target side on an interface between the piezoelectric element and the reflection layer, and has a thickness so as to superimpose other ultrasonic waves on the transmitted ultrasonic wave.. .
Seiko Epson Corporation
06/25/15
20150177078

Dynamic strain sensor and method


A dynamic strain sensor includes a strain sensitive transistor and a light emitting diode coupled to the strain sensitive transistor. The dynamic strain sensor can include a piezoelectric layer incorporated into the structure of the strain sensitive transistor.
Honeywell Romania S.r. L.
06/25/15
20150174910

Piezoelectric pump and ink jet apparatus having the same


A piezoelectric pump includes a housing, a first valve member, and a second valve member. The housing includes an inlet, a first chamber, a second chamber having a wall made of piezoelectric material, a third chamber, and an outlet connected in this order.
Toshiba Tec Kabushiki Kaisha
06/25/15
20150174903

Liquid jet head and liquid jet apparatus


A liquid jet head includes a piezoelectric body substrate including a plurality of groove arrays in which a long and narrow ejection groove and a long and narrow non-ejection groove are alternately arrayed in a reference direction. The other side end portion of the ejection groove included in a one side groove array, and a one side end portion of the non-ejection groove included in the other side groove array do not overlap in a thickness direction of the piezoelectric body substrate, and the other side end portion of the ejection groove included in the one side groove array, and a one side end portion of the ejection groove included in the other side groove array communicate, or overlap in the reference direction, of adjacent groove arrays..
Sii Printex Inc.
06/25/15
20150174902

Liquid jet head and liquid jet apparatus


A liquid jet head includes a piezoelectric body substrate in which a groove array in which an ejection groove opening to a surface and a non-ejection groove opening to the surface are alternately arrayed in a reference direction k, common drive electrodes are installed at both side surfaces of the ejection groove, and individual drive electrodes are installed at both side surfaces of the non-ejection groove. The piezoelectric body substrate includes pieces of individual wiring electrically separated to each other on the surface at both end sides of the non-ejection groove in a longitudinal direction, and the individual wiring at one end side is electrically connected to the individual drive electrode installed at one side surface of the non-ejection groove, and the individual wiring at the other end side is electrically connected to the individual drive electrode installed at the other side surface of the non-ejection groove..
Sii Printek Inc.
06/25/15
20150173714

Ultrasonic diagnostic apparatus and manufacturing method thereof


Disclosed herein are an ultrasonic diagnostic apparatus, and a manufacturing method thereof. The ultrasonic diagnostic apparatus includes: a matching layer; a flexible printed circuit board having steps at both edge portions; a piezoelectric layer disposed below the matching layer and on the flexible printed circuit board such that a first electrode and a second electrode of the piezoelectric layer, between which steps are formed and which are separated from each other by polarization areas, are respectively connected to a first electrode and a second electrode of the flexible printed circuit board; and a backing layer disposed below the piezoelectric layer..
Samsung Medison Co., Ltd.
06/25/15
20150173712

Ultrasonic probe and manufacturing the same


Provided are an ultrasonic probe and a method of manufacturing the same. The ultrasonic probe includes: a matching layer; a piezoelectric layer that is disposed on a bottom surface of the matching layer and generates ultrasonic waves; and a backing layer that is disposed on a bottom surface of the piezoelectric layer and includes plate-shaped carbon allotropes and a backing material provided between the plate-shaped carbon allotropes..
Samsung Medison Co., Ltd.
06/25/15
20150173477

Hair styling apparatus


A hair styling apparatus includes first and second handle members adapted for movement between an open position for receiving hair therebetween and a closed position adjacent the hair, a heating element associated with at least one of said first and second handle members and a vibration element mountable to at least one of the first and second handle member to impart mechanical energy to the heating element. The vibration element may include a transducer.
Conair Corporation
06/18/15
20150173237

Electronic module and heat dissipation module


An electronic module includes a substrate, a metallic shielding cover, an electronic component and a piezoelectric element. The metallic shielding cover is disposed on the substrate and forms an accommodating chamber together with the substrate, wherein the metallic shielding cover has an opening, and the accommodating chamber is communicated with outside via the opening.
Htc Corporation
06/18/15
20150172824

Wearable communication device


A wearable communication device includes an annular shell, a processing module, a first piezoelectric unit, and a driving unit. A cavity is formed at a part of the annular shell.
Asustek Computer Inc.
06/18/15
20150172823

Acoustic generator, acoustic generation device, and electronic device


An acoustic generator according to an aspect of an embodiment includes a piezoelectric element (exciter), a vibrating body. The piezoelectric element receives an input of an electrical signal and is caused to vibrate.
Kyocera Corporation
06/18/15
20150172523

Dust removing device and dust removing method


In a piezoelectric device, a first electrode and a second electrode are disposed to be opposed to each other on plate surfaces of the piezoelectric device, a first electrode plane of the piezoelectric device is fixedly bonded to a plate surface of a vibrating plate, a piezoelectric material forming the piezoelectric device is polarized in a direction parallel to the first electrode plane, the piezoelectric device is fixed to a base through a second electrode plane of the piezoelectric device, and the piezoelectric device generates a thickness-shear vibration with the fixed second electrode plane being a reference plane. The piezoelectric vibration generated by the piezoelectric device generates a flexural vibration in the vibrating plate, to thereby remove dust adhering to a surface of the vibrating plate..
Canon Kabushiki Kaisha
06/18/15
20150171826

Piezoelectric thin-film resonator, fabricating the same, filter and duplexer


A piezoelectric thin-film resonator includes: a substrate; a piezoelectric film having a lower piezoelectric film provided on the substrate and an upper piezoelectric film provided on the lower piezoelectric film; lower and upper electrodes that face each other through at least a part of the piezoelectric film; an interposed film that is interposed between the lower piezoelectric film and the upper piezoelectric film and is located in an outer circumferential part of a resonance region in which the lower and upper electrodes face each other through the piezoelectric film, the interposed film not being provided in a central part of the resonance region; an upper surface of the lower piezoelectric film having a first roughness in a region in which the interposed film is not provided and a second roughness in another region in which the interposed film is provided, the first roughness being smaller than the second roughness.. .
Taiyo Yuden Co., Ltd.
06/18/15
20150171823

Cmos fabrication of a thin-film bulk acoustic resonator


A process of forming a thin-film bulk acoustic resonator (fbar) device (130, 914) on a silicon-on-thin film aluminum-nitride on silicon (softanos) substrate (110) using a cmos fabrication process is provided. The softanos substrate, which is an example of a high thermal conductivity silicon-on-insulator (soi) substrate, comprises an aluminum nitride (aln) layer (114) and a silicon layer (118).
The Silanna Group Pty Ltd
06/18/15
20150171821

Piezoelectric vibration element, manufacturing piezoelectric vibration element, piezoelectric resonator, electronic device, and electronic apparatus


A piezoelectric vibration element includes a piezoelectric substrate including a thin vibration region and a thick section integrated along three sides excluding one side of the vibration region, excitation electrodes respectively arranged on the front and rear surfaces of the vibration region, and lead electrodes. The thick section includes a first thick section and a second thick section arranged to be opposed to each other across the vibration region and a third thick section connected between proximal ends of the first and second thick sections.
Seiko Epson Corporation
06/18/15
20150171792

Apparatus and generating sinusoidal waves, and system for driving piezoelectric actuator using the same


An apparatus for generating sinusoidal waves may includes a look-up table storage unit including a plurality of sampling points with respect to a base frequency, a waveform-synthesizing unit calculating an integer ratio between an input target frequency and the base frequency and loading at least some of the plurality of sampling points from the look-up table storage unit according to the integer ratio, a correction unit substituting a digital value of at least one sampling point among the sampling points loaded from the look-up table with a digital value of a sampling point among the plurality of sampling points included in the look-up table storage unit having a maximum value, and a sinusoidal generation unit generating sinusoidal waves using the sampling points changed by the correction unit.. .
Samsung Electro-mechanics Co., Ltd.
06/18/15
20150171313

Forming a device having a curved piezoelectric membrane


Processes for forming an actuator having a curved piezoelectric membrane are disclosed. The processes utilize a profile-transferring substrate having a curved surface surrounded by a planar surface to form the curved piezoelectric membrane.
Fujifilm Corporation
06/18/15
20150171312

Switching element, manufacturing the same, and display device including switching element


A method for manufacturing a switching element which has enough resistance to repeat switching operations and which can be miniaturized and have low power consumption, and a display device including the switching element are provided. The switching element includes a first electrode to which a constant potential is applied, a second electrode adjacent to the first electrode, and a third electrode over the first electrode with a spacer layer formed of a piezoelectric material interposed therebetween and provided across the second electrode such that there is a gap between the second electrode and the third electrode.
Semiconductor Energy Laboratory Co., Ltd.
06/18/15
20150171311

Piezoelectric material, piezoelectric element, and electronic apparatus


(ba1-x-ycaxsny)α(ti1-zzrz)o3 (where 0.020≦x≦0.200, 0.020≦y≦0.200, 0≦z≦0.085, 0.986≦α≦1.100).  general formula (1). .
06/18/15
20150171310

Piezoelectric material, piezoelectric element, and electronic apparatus


(where 0.020≦x≦0.200, 0.020≦y≦0.200, 0.050<z≦0.085, 0.986≦α≦1.100).. .
06/18/15
20150171309

Piezoelectric element, multilayered piezoelectric element, liquid discharge apparatus, and ultrasonic motor


(ba1-x-ycaxsny)α(ti1-zzrz)o3 (where 0.020≦x≦0.200, 0.020≦y≦0.200, 0≦z≦0.050, and 0.986≦α≦1.100)   general formula (1). .
06/18/15
20150171306

Multi-layer piezoelectric element, and piezoelectric actuator, injection device, and fuel injection system provided with the multi-layer piezoelectric element


There are provided a multi-layer piezoelectric element which is capable of suppressing separation of an external electrode plate, as well as a piezoelectric actuator, an injection device, and a fuel injection system that are provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body composed of piezoelectric layers and internal electrode layers which are laminated; an external electrode plate attached to a side face of the stacked body via an electrically-conductive joining member; and a metal cover layer being disposed on a surface of the external electrode plate, an area of the metal cover layer corresponding to one end portion of the stacked body in a stacking direction of the stacked body having a thick-walled portion which is larger in thickness than an area of the metal cover layer corresponding to a midportion of the stacked body..
Kyocera Corporation
06/18/15
20150170449

Method and a merged power-communication cable in door security environment


A method controlling access to a door using a merged power-communication cable. An access controlled door lock in door is operated using merged power-communication cable.
06/18/15
20150169136

Micromechanical ultrasonic transducers and display


An apparatus may include a one- or two-dimensional array of micromechanical ultrasonic transducer (pmut) elements positioned below, beside, with, on, or above a backplane of a visual display. The backplane may be a thin-film transistor (tft) backplane.
Qualcomm Incorporated
06/18/15
20150168990

Apparatus and generating sinusoidal waves, and system for driving piezoelectric actuator using the same


An apparatus for generating sinusoidal waves may include a look-up table storage unit storing a look-up table including a plurality of sampling points determined based on a base frequency and a sampling frequency, a sinusoidal wave generation unit calculating an integer ratio of the target frequency to the base frequency and loading sampling points from the look-up table by reflecting the integer ratio, to generate a sinusoidal wave, a voltage step-up unit providing a stepped-up voltage to the sinusoidal wave generation unit, and a correction control unit sensing the stepped-up voltage from the voltage step-up unit and performing controlling so that the sampling points are corrected in the case that a level of the stepped-up voltage does not meet a predetermined requirement.. .
Samsung Electro-mechanics Co., Ltd.
06/18/15
20150168958

Method of, and , providing a gas mixture


There is provided a gas mixer arrangement comprising a first gas source for supplying a first gas; a second gas source for supplying a second gas different from said first gas; first and second flow regulation devices for regulating the respective flow of the first gas and second gases from the first and second gas sources; a mixer, and an outlet. The mixer is located downstream of the first and second flow regulation devices and arranged, in use, to mix the first and second gases to provide a mixed gas to the outlet.
Air Products And Chemicals, Inc.
06/18/15
20150168503

Magnetic field sensor and sensing apparatus using the same


Disclosed herein are a magnetic field sensor and a sensing apparatus using the same. The present invention provides a magnetic field sensor including: a magnetic field detection unit which includes a substrate, a piezoelectric driving body formed on the substrate, and a magnetostrictive layer stacked on one portion of the piezoelectric driving body and is vibrated at a vibration frequency changed from a natural frequency in proportion to a magnitude of an external magnetic field; and a control unit which drives the piezoelectric driving body with a constant ac voltage and calculates a magnitude of the external magnetic field from an output voltage output from the magnetic field detection unit, and a sensing apparatus using the same..
Samsung Electro-mechanics Co., Ltd.
06/18/15
20150168325

Methods and sensors for the detection of active carbon filters degradation with emis-ecis pwas


Active carbon filters and systems that are operative to detect active carbon filter degradations are provided. The active carbon filter can include a carbon filter comprising activated carbon and defining a filter surface; a first piezoelectric wafer active sensor on the filter surface that is electrically isolated from the carbon filter; and a second piezoelectric wafer active sensor on the filter surface that is electrically connected to the filter surface; and an impedance monitoring device electrically connected to the first piezoelectric wafer active sensor and the second piezoelectric wafer active sensor.
06/18/15
20150168237

Sensor device and electronic device


A sensor device that includes a film composed of, for example, plla; and electrodes for extracting an output voltage from the plla film. The electrodes are located on main surfaces of the plla film such that the electrodes face each other with at least a portion of the plla film being interposed therebetween.
A School Corporation Kansai University
06/18/15
20150168209

Elastic wave element and elastic wave sensor using same


An acoustic wave element includes a piezoelectric substrate, an excitation electrode configured to excite and output a main acoustic wave on the piezoelectric substrate, a receiving electrode configured to receive the main acoustic wave, a propagation path configured to allow the main acoustic wave to propagate along the piezoelectric substrate between the excitation electrode and the receiving electrode, and a sensing portion configured to react to an object substance. The propagation path is configured to allow the main acoustic wave to pass plural times through the sensing portion along the propagation path.
Panasonic Intellectual Property Management Co., Lt
06/18/15
20150165784

Liquid droplet ejecting apparatus


The present invention provides a liquid droplet ejecting apparatus that may cool, with a simple configuration, drive sections of piezoelectric elements. Namely, the liquid droplet ejecting apparatus has head modules that use piezoelectric elements to eject ink droplets, driver ics that drive the piezoelectric elements, a ventilation unit that delivers dry air to the environs of the piezoelectric elements via a gas delivery passage disposed therein in order to dehumidify the environs of the piezoelectric elements, a branch tube that branches from the gas delivery passage and blows onto the driver ics some of the air that has been delivered, and a duckbill valve that is disposed in the branch tube.
Fujifilm Corporation
06/18/15
20150165479

Piezoelectric ultrasonic transducer and process


A piezoelectric micromechanical ultrasonic transducer (pmut) includes a multilayer stack disposed on a substrate. The multilayer stack may include an anchor structure disposed over the substrate, a piezoelectric layer stack disposed over the anchor structure, and a mechanical layer disposed proximate to the piezoelectric layer stack.
Qualcomm Incorporated
06/18/15
20150165466

Ultrasonic nebulizer with controlled mist output


An ultrasonic nebulizer includes a piezoelectric element that vibrates responsive to a drive signal having an alternating voltage. A nebulizing layer that may be a passive resonator is bonded to a first surface of the piezoelectric element and has an outer surface that transforms a liquid into a mist responsive to vibration of the piezoelectric element.
Agilent Technologies, Inc.
06/18/15
20150165465

Ultrasonic nebulizer with controlled mist output


An ultrasonic nebulizer includes a piezoelectric element that vibrates responsive to a drive signal having an alternating voltage. A nebulizing layer that may be a passive resonator is bonded to a first surface of the piezoelectric element and has an outer surface that transforms a liquid into a mist responsive to vibration of the piezoelectric element.
Agilent Technologies, Inc.
06/18/15
20150164469

Circuit architectures and electrical interfaces for rotational intravascular ultra-sound (ivus) devices


Rotational intravascular ultrasound (ivus) imaging devices, systems, and methods are provided. Some embodiments of the present disclosure are particularly directed to compact and efficient circuit architectures and electrical interfaces for polymer piezoelectric micromachined ultrasonic transducers (pmuts) used in rotational ivus systems.
Volcano Corporation
06/11/15
20150163598

Piezoelectric element, piezoelectric vibration module, and methods of manufacturing the same


A piezoelectric vibration module includes a piezoelectric element, a wiring member connected to the piezoelectric element and drawn out to the outside, and an elastic plate bonded to one surface of the piezoelectric element, wherein the elastic plate is made of a silicone rubber.. .
Nec Tokin Corporation
06/11/15
20150162893

Acoustic wave device and manufacturing same


An saw device (1) has a piezoelectric substrate (3) propagating acoustic waves, and a comb-shaped electrode (6) arranged on a first surface (3a) of the piezoelectric substrate (3). The saw device (1) has a columnar terminal (15) located on the first surface (3a) and electrically connected to the comb-shaped electrode (6), and a cover member (9) covering the a side surface of the terminal (15).
Kyocera Corporation
06/11/15
20150162853

Actuator for an ultrasonic motor and ultrasonic motor comprising at least one such actuator


An ultrasonic motor comprising a rotor (18) having an at least partly spherical shape and two actuators (2, 2′) each comprising an element of plate-shaped piezoelectric material comprising at least one contact edge (4, 4′) in contact with the rotor (18), said actuators (2, 2′) also comprising on one of their faces electrodes intended to bias piezoelectric materials in a bending mode and in a longitudinal mode. The contact edges (4, 4′) are concave and are formed by an arc of circle the radius of which substantially corresponds to the radius of the surface of the rotor (18), said arcs of circle angularly extending at a determined angle such that the bending mode and the longitudinal mode in which the piezoelectric material is biased are at the same frequency..
Commissariat à I'énergie Atomique Et Aux énergies Alternatives
06/11/15
20150162523

Piezoelectric device


A piezoelectric device that includes: a diaphragm; a supporting part configured to support at least a portion of an end of the diaphragm; a piezoelectric film disposed along a portion supported by the supporting part on the diaphragm, a width of the film along the supported portion being narrower than a width of the portion; a lower electrode disposed at a face of the piezoelectric film on a diaphragm side; and an upper electrode disposed on a face of the piezoelectric film on an opposite side to the diaphragm.. .
Murata Manufacturing Co., Ltd.
06/11/15
20150162521

Surface mounted piezoelectric vibrator


A piezoelectric vibrator according to the invention has a base, an integrated circuit element, and a piezoelectric vibration element. The base has internal terminal pads, and external terminals including an ac output terminal.
Daishinku Corporation
06/11/15
20150160053

Phase controlled variable angle ultrasonic flow meter


An ultrasonic transducer includes: a piezoelectric element divided into a plurality of segments; a pulse generator configured to generate a pulse signal that comprises pulses of a certain frequency; and a control circuit that sequentially activates the segments to cause the element to emit a sonic signal, where a controlled delay time between activation of each segment varies the emission angle of the sonic signal so as to compensate for angle changes caused by either changes in beam refraction or due to beam blowing caused by high flow velocity.. .
06/11/15
20150158774

Salt resistant cement


Disclosed herein are corrosion-resistant composites. In particular, the composites can include a piezoelectric material embedded within a binding medium that can impede or inhibit the corrosive effects caused by salts and acids.
Empire Technology Development Llc
06/11/15
20150158293

Liquid ejection apparatus


An ink jet printer includes an ejection unit including a nozzle which ejects a liquid containing a pigment; a cavity which communicates with the nozzle; and a piezoelectric element which is provided in the cavity, and a driving signal generation unit which generates a driving signal allowing the piezoelectric element to be displaced such that the cavity expands or is contracted. The ink jet printer includes a detection unit that detects a cycle of a residual vibration waveform of the piezoelectric element which is generated by the driving signal being applied to the piezoelectric element and indicates a value according to change of the pressure inside of the cavity and a determination unit that determines the pigment is settled based on the cycle of the residual vibration waveform detected by the detection unit..
Seiko Epson Corporation
06/11/15
20150158184

Piezoelectric motor, robot hand, robot, finger assist apparatus, electronic component conveying apparatus, electronic component inspecting apparatus, liquid feed pump, printing apparatus, electronic timepiece, and projecting apparatus


A supporting portion disposed in parallel to a joint portion to which a vibrating body capable of generating a bending vibration is jointed and configured to support the vibrating body and the joint portion is provided, and the joint portion and the supporting portion are coupled with a plurality of coupling portions. The supporting portion has rigidity higher than that of the joint portion..
Seiko Epson Corporation
06/11/15
20150158053

Method of manufacturing ultrasonic probe


Provided is a method of manufacturing an ultrasonic probe. The method includes forming a sacrificial layer on a substrate; forming a plurality of openings in the sacrificial layer that are separated from one another; forming piezoelectric units by growing a piezoelectric element in each of the plurality of openings; and removing the sacrificial layer..
Samsung Medison Co., Ltd.
06/11/15
20150158052

Flexible micromachined transducer device and fabricating same


Techniques and structures for providing flexibility of a micromachined transducer array. In an embodiment, a transducer array includes a plurality of transducer elements each comprising a piezoelectric element and one or more electrodes disposed in or on a support layer.
06/04/15
20150155853

Surface acoustic wave filter


A surface acoustic wave filter includes a piezoelectric substrate, a lower-layer wiring line, an upper-layer wiring line, and an interlayer insulating film. The lower-layer wiring line is disposed on the piezoelectric substrate.
Murata Manufacturing Co., Ltd.
06/04/15
20150155851

Acoustic wave element


An acoustic wave element includes: a piezoelectric substrate; an idt (interdigital transducer) formed on the piezoelectric substrate; and an end face of the piezoelectric substrate that is formed on at least one end of the idt in a propagation direction of an acoustic wave; wherein when a wavelength of the acoustic wave which the idt excites is expressed by “λ” and a metallization ratio of the idt is expressed by “d”, a distance between an inner end of an electrode finger of the idt nearest to the end face and the end face is equal to or more than 7λ/16+d×λ/4 and equal to or less than 3λ/4+dλ/4.. .
Taiyo Yuden Co., Ltd.
06/04/15
20150155799

Wobble motor with a solid state actuator


An wobble motor with an actuator extending in a z direction between opposite mount and tool ends and comprising two sections offset in that z direction. Each section comprises a structure of electrodes interleaved in a piezoelectric material in such a way that a y-region can cause deflection in a y-direction perpendicular to the z-direction upon energising of associated electrodes and such that a x-region can cause deflection in an x-direction perpendicular to the y and z directions upon energising of associated electrodes..
Noliac A/s
06/04/15
20150155475

Piezoelectric thin film, manufacturing the same, piezoelectric thin film manufacturing apparatus and liquid ejection head


A piezoelectric thin film is manufactured by sequentially executing: a step of coating a substrate by applying a coating solution containing an organic solvent and a piezoelectric thin film precursor to form a coating layer; a step of evaporating the organic solvent from the coating layer in a windless environment to obtain a dried coating layer containing the piezoelectric thin film precursor; and a step of heating the dried coating layer to form a piezoelectric thin film from the dried coating layer containing the piezoelectric thin film precursor.. .
Canon Kabushiki Kaisha
06/04/15
20150155474

Piezoelectric device and process for producing piezoelectric device


A piezoelectric device is provided that includes a polymer piezoelectric material having at least one film-like layer; a first electric conductor provided on a principal surface of the polymer piezoelectric material; a second electric conductor provided on a surface of the polymer piezoelectric material at an opposite side from the first electric conductor on the principal surface; a first end surface electric conductor provided on one end surface in a width direction of the polymer piezoelectric material and disposed so as to be conductively connected to the first electric conductor and so as not to be in contact with the second electric conductor; and a second end surface electric conductor provided on any other end surface that is not the one end surface of the polymer piezoelectric material and disposed in a defined manner.. .
Murata Manufacturing Co., Ltd.
06/04/15
20150155473

Piezoelectric material, piezoelectric element, multilayered piezoelectric element, manufacturing multilayered piezoelectric element, liquid discharge head, liquid discharge device, ultrasonic motor, optical device, vibration device, dust removing device, imaging device, and electronic device


Provided is a piezoelectric material that is free of lead and potassium, has satisfactory insulation property and piezoelectricity, and has a high curie temperature. The piezoelectric material includes a perovskite-type metal oxide represented by the following general formula (1): general formula (1) (naxm1-y)(zrz(nb1-wtaw)y(ti1-vsnv)(1-y-z))o3 where m represents at least any one of ba, sr, and ca, and relationships of 0.80≦x≦0.95, 0.85≦y≦0.95, 0<z≦0.03, 0≦v<0.2, 0≦w<0.2, and 0.05≦1−y−z≦0.15 are satisfied..
Canon Kabushiki Kaisha
06/04/15
20150155470

Piezoelectric actuator, piezoelectric vibration device, and portable terminal


A piezoelectric actuator which is capable of reduction of noise resulting from vibration of a piezoelectric element, a piezoelectric vibration device, and a portable terminal are provided. A piezoelectric actuator includes a piezoelectric element including a stacked body composed of internal electrodes and piezoelectric layers which are laminated, and a surface electrode disposed on one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes; a flexible substrate electrically connected to the surface electrode; and a shock-absorbing material disposed on the flexible substrate.
Kyocera Corporation
06/04/15
20150155469

Piezoelectric device


A piezoelectric device includes a piezoelectric vibrating piece and a base. The piezoelectric vibrating piece includes an excitation portion, a framing portion, a connecting portion, excitation electrodes, and extraction electrodes.
Nihon Dempa Kogyo Co., Ltd.
06/04/15
20150153572

Adjustment of location of superimposed image


An optical system has an aperture through which virtual and real-world images are viewable along a viewing axis. The optical system may be incorporated into a head-mounted display (hmd).
Google Inc.
06/04/15
20150153519

Variable optical attenuator


In one embodiment, a variable optical attenuator includes a core configured to propagate optical data signals and a cladding surrounding at least part of the core and comprising a first cladding portion and a second cladding portion. An attenuating spacer between the first cladding portion and the second cladding portion is formed from a smart material.
Cisco Technology, Inc.
06/04/15
20150153310

Turbine blade testing device and testing method thereof


According to one embodiment, a testing device of a turbine blade includes: a non-compressive elastic medium brought into close contact with a platform of the turbine blade in a state fastened to a turbine rotor; a probe which has piezoelectric elements arranged in an array and transmits ultrasound waves toward a fastening portion of the turbine blade through the elastic medium and receives echo waves; and a display portion for imaging an internal region of the fastening portion on the basis of the echo waves and displaying the same.. .
Toshiba Plant Systems & Services Corporation
06/04/15
20150153208

Thermal, flow measuring device and operating a thermal, flow measuring device


A thermal, flow measuring device for determining and/or monitoring the flow of a measured medium through a measuring tube, including a first sleeve, especially a first metal sleeve, and at least a second sleeve, especially a second metal sleeve, a first temperature sensor element and at least a second temperature sensor element. At least the first temperature sensor element is heatable and arranged in the first sleeve and the second temperature sensor element is arranged in the second sleeve.
Endress + Hauser Flowtec Ag
06/04/15
20150152825

Injector-igniter with thermochemical regeneration


A fuel injection system comprising an injector-igniter and a fuel tank in fluid communication with the injector-igniter. The injector igniter includes an injector housing and a valve assembly.
Mcalister Technologies, Llc
06/04/15
20150151593

Tire module with piezoelectric transducer


A tire module and cover for attachment to a pneumatic tire for vehicles is disclosed. The tire module has a device for measuring and/or monitoring the air pressure in the tire, a transmitter, a mechanical-electrical transducer, and an accumulator for electrical energy storage.
Huf Hülsbeck & Fürst Gmbh & Co., Kg
06/04/15
20150151330

Ultrasonic transducer device, ultrasonic measurement apparatus, and ultrasonic imaging apparatus


An ultrasonic transducer device includes a substrate in which a first opening and a second opening are provided, a first ultrasonic transducer element that is formed on the substrate in correspondence with the first opening, and a second ultrasonic transducer element that is formed on the substrate in correspondence with the second opening. The first opening has a first edge portion on a first direction side and a second edge portion on a second direction side, the first direction corresponding to a scan direction and the second direction being in the opposite direction to the first direction.
Seiko Epson Corporation


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

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