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Piezo patents



      
           
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


Liquid jet head and liquid jet apparatus

Sii Printek

Liquid jet head and liquid jet apparatus

Head gimbal assembly

Nitto Denko

Head gimbal assembly

Date/App# patent app List of recent Piezo-related patents
06/25/15
20150181338
 Stereo earphone patent thumbnailnew patent Stereo 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 thumbnailnew patent Surface 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 thumbnailnew patent Vibrating 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
20150180375
 Method and  generating energy using piezo elements patent thumbnailnew patent Method and generating energy using piezo elements
An energy-generating apparatus includes at least one magnetic field-generating apparatus configured to at least intermittently generate a magnetic field that varies over time. The energy-generating apparatus also includes at least one magnetic field interaction means and at least one energy-generating apparatus designed as a piezo element device..
Gsi Helmholtzzentrum Fuer Schwerionenforschung Gmbh
06/25/15
20150179922
 Two-dimensional zinc-oxide nanosheet-based power generation device and  fabricating the same patent thumbnailnew patent Two-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 thumbnailnew patent Piezoelectric 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 thumbnailnew patent Piezoelectric 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 thumbnailnew patent Head 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 thumbnailnew patent Cantilevered 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 thumbnailnew patent Piezoelectric 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
new patent

Ultrasonic 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
new patent

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
20150176344
new patent

Downhole assembly


A piezo electric control system for use in a downhole assembly which is inserted into a borehole comprising an articulated mandrel, a passive and an active damping mechanism operating on said mandrel for exercising control over torsional stick-slip in which said piezo electric system exercises control.. .
06/25/15
20150174910
new patent

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
new patent

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
new patent

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
new patent

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
new patent

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
new patent

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
20150171883

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


There are provided an apparatus and a method for generating sinusoidal waves, and a system for driving a piezo actuator using the same. The apparatus for generating sinusoidal waves includes: 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 generating unit calculating an integer ratio of a target frequency to the base frequency and obtaining sampling points from the look-up table by reflecting the integer ratio; and a sampling point correction unit determining whether sampling points obtained by the sinusoidal wave generating unit correspond to sampling points corresponding to the maximum and minimum levels of a predetermined sinusoidal wave, to correct the sampling points obtained by the sinusoidal wave generating unit..
Samsung Electro-mechanics Co., Ltd.
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
20150168989

Apparatus and generating sinusoidal waves, and system for driving piezo 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 generating unit calculating an integer ratio of a target frequency to the base frequency and obtaining sampling points from the look-up table by reflecting the integer ratio so as to generate a sinusoidal wave; and a correction control unit calculating noise information in the generated sinusoidal wave, and controlling the sinusoidal wave generating unit to correct the sampling frequency if the noise information fails to 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


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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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