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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


Method for manufacturing energy harvester comprising piezoelectric polymer microstructure array

Xi'an Jiaotong University

Method for manufacturing energy harvester comprising piezoelectric polymer microstructure array

Ferroelectric ceramics and manufacturing method thereof

Youtec

Ferroelectric ceramics and manufacturing method thereof

Ferroelectric ceramics and manufacturing method thereof

Seiko Epson

Piezoelectric element, liquid ejecting head, and sensor


Date/App# patent app List of recent Piezoelectric-related patents
08/20/15
20150236665 
 Method for manufacturing surface acoustic wave apparatus patent thumbnailMethod for manufacturing surface acoustic wave apparatus
Provided is a method for manufacturing a surface acoustic wave apparatus that can reduce degradation of electric characteristics and also reduce the number of manufacturing processes. The method for manufacturing a surface acoustic wave apparatus includes the steps of: forming an idt electrode on an upper surface of a piezoelectric substrate, forming a frame member surrounding a formation area in which the idt electrode is formed on the piezoelectric substrate, and mounting a film-shaped lid member on the upper surface of the frame member so as to be joined to the frame member so that a protective cover, used for covering the formation area and for providing a tightly-closed space between it and the formation area, is formed..
Kyocera Corporation


08/20/15
20150236620 
 Method for manufacturing energy harvester comprising piezoelectric polymer microstructure array patent thumbnailMethod for manufacturing energy harvester comprising piezoelectric polymer microstructure array
A method for manufacturing an energy harvester including a piezoelectric polymer microstructure array. The method includes: preparing a micro-column array of a piezoelectric polymer on a substrate; supplying a plate electrode as an upper electrode, allowing the substrate and the upper electrode to form a pair of plate electrodes; applying a dc voltage between the pair of the plate electrodes; heating the substrate to a temperature higher than a glass transition temperature of the piezoelectric polymer and performing rheological formation of the micro-column array with the dc voltage still being applied until the column array of the piezoelectric polymer reaches the upper electrode to form a mushroom-shaped structure array; and cooling and solidifying the piezoelectric polymer to obtain the piezoelectric energy harvester..
Xi'an Jiaotong University


08/20/15
20150236244 
 Ferroelectric ceramics and manufacturing method thereof patent thumbnailFerroelectric ceramics and manufacturing method thereof
To obtain a piezoelectric film having excellent piezoelectric properties. One aspect of the present invention relates to ferroelectric ceramics including a zro2 film oriented in (200), a pt film that is formed on the zro2 film and is oriented in (200) and a piezoelectric film formed on the pt film..
Youtec Co., Ltd.


08/20/15
20150236243 
 Piezoelectric element, liquid ejecting head, and sensor patent thumbnailPiezoelectric element, liquid ejecting head, and sensor
A piezoelectric element 300 includes a first electrode 60, a piezoelectric layer 70 arranged on the first electrode 60, and a second electrode 80 arranged on the piezoelectric layer 70, in which the piezoelectric layer 70 includes a composite oxide which has a perovskite structure and the composite oxide has a composition represented as a mixed crystal of bismuth ferrate and strontium titanate.. .
Seiko Epson Corporation


08/20/15
20150236242 
 Single-crystal piezoelectric fiber composite and magnetoelectric laminate composite including the same patent thumbnailSingle-crystal piezoelectric fiber composite and magnetoelectric laminate composite including the same
A piezoelectric fiber composite and a magnetoelectric laminate composite including the same are disclosed. The piezoelectric fiber composite includes a first protective layer having a first electrode, a second protective layer having a second electrode, and a piezoelectric fiber layer formed between the first and the second electrode and having piezoelectric fibers arranged in the longitudinal direction of the composite, wherein the piezoelectric fibers include a single-crystal piezoelectric material and are configured such that a <011> direction of the single crystal is identical to a thickness direction of the composite and a <001> direction of the single crystal is identical to a longitudinal direction of the composite, thus exhibiting superior piezoelectric strain properties and sensing properties.
Korea Institute Of Machinery And Minerals


08/20/15
20150236241 
 Vibration generating apparatus patent thumbnailVibration generating apparatus
There is provided a vibration generating apparatus including: an elastic member having both end portions thereof fixedly installed on a support part of a lower case; a piezoelectric element installed on one surface of the elastic member; and a mass body part connected to the elastic member to increase an amount of vibrations, wherein the mass body part is provided with protrusion portions for first contacting the lower case at the time of an external impact.. .
Samsung Electro-mechanics Co., Ltd.


08/20/15
20150236240 
 Piezoelectric vibration actuator and  manufacturing the same patent thumbnailPiezoelectric vibration actuator and manufacturing the same
Embodiments of the invention provide a piezoelectric vibration actuator and a method of manufacturing the same. According to at least one embodiment, the piezoelectric vibration actuator includes a case having an internal space partitioned into a top wall, a right side wall, a bottom wall, and a left side wall and having opened one side wall, and a driving part coupled to the case and linearly translated toward the top wall and the bottom wall in the internal space of the case..
Samsung Electro-mechanics Co., Ltd.


08/20/15
20150236239 
 Actuator device patent thumbnailActuator device
Actuator device has a main body with base and superstructure bodies, the device having a plurality of actuators formed from a piezoelectric or electrostrictive material and each extend from the base body and form the superstructure body. The actuators each have at least two inner actuating electrodes of which at least one first inner actuating electrode extends, in a positive depthwise direction from the front side up to a distance from the rear side, and of which at least one second inner actuating electrode extends in a negative depthwise direction from the rear side up to a distance from the front side.
Pi Ceramic Gmbh


08/20/15
20150236238 
 Elastic wave element and ladder filter using same patent thumbnailElastic wave element and ladder filter using same
Methods and apparatus for reducing electric loss in an elastic wave element. In one example, the elastic wave element includes a piezoelectric body having a upper surface, an interdigital transducer (idt) electrode disposed on the piezoelectric body, a connection wiring disposed on the piezoelectric body and electrically connected to the idt electrode, the connection wiring having a lower connection wiring and an upper connection wiring provided above the lower connection wiring, and a reinforcement electrode provided above the connection wiring, the reinforcement electrode being in contact with and electrically connected to the lower connection wiring..

08/20/15
20150236237 
 Elastic wave device manufacturing method and elastic wave device patent thumbnailElastic wave device manufacturing method and elastic wave device
Functional element units and a connection line electrically connecting the functional element units are formed on one principal surface of a piezoelectric motherboard. A resin support layer enclosing the functional element units is formed on the one principal surface of the motherboard.
Murata Manufacturing Co., Ltd.


08/20/15
20150235656 

Apparatus for detecting voice and controlling method thereof


Embodiments of the invention provide a method and apparatus for detecting a voice. The apparatus, according to various embodiments of the invention, includes a driving signal processing unit configured to generate a driving signal using a first output voltage induced from an initial voice signal sensed by a piezoelectric and a first preset reference voltage.
Samsung Electro-mechanics Co., Ltd.


08/20/15
20150234465 

Electronic device and providing information thereof


An electronic device includes a pressure providing part, a fluid, and a tactile sensation providing layer. The pressure providing part generates an initial pressure by an electrical signal.
Samsung Display Co., Ltd.


08/20/15
20150234177 

Mems optical scanner


Provided is a mems optical scanner that stably performs a scan with light by rotary moving a mirror centering on a v-axis in coincidence with a resonant frequency that enables ramp wave driving while securing shock resistance. The mems optical scanner includes a first substrate, a driving portion that drives the mirror by a piezoelectric film in a first axial direction where the piezoelectric film is installed on the first substrate, a frame that supports a driving portion, a second substrate, a support portion that supports the first substrate, a frame portion spaced from and surrounding the support portion, and an axis portion that supports the support portion and the frame portion along a second axial direction.
Jvc Kenwood Corporation


08/20/15
20150231907 

Liquid discharge device, and discharge abnormality testing method


A liquid discharge device includes a head having a piezoelectric element that vibrates a vibrating plate, a pressure chamber for which the internal pressure is increased and decreased by vibration of the vibrating plate, and a nozzle in communication with the pressure chamber, that can discharge a liquid by increasing and decreasing the pressure of the pressure chamber, a drive unit that outputs drive signals to the piezoelectric element, a testing unit that tests discharge abnormality of the nozzle based on a vibration pattern of residual vibration inside the pressure chamber that occurs due to the drive signals, and a control unit that has the drive unit output a second drive signal after having it output a first drive signal, and that has the testing unit detect the discharge abnormality of the nozzle after the second drive signal is output.. .
Seiko Epson Corporation


08/20/15
20150231884 

Piezoelectric actuator, liquid ejecting head, and manufacturing piezoelectric actuator


Provided is piezoelectric actuator includes; a vibrating plate; a first electrode provided on the vibrating plate; a first seed layer provided on the first electrode; a second seed layer provided on the vibrating plate at least at a position adjacent to the first electrode; a first piezoelectric layer provided on the first seed layer, the first piezoelectric layer and has a perovskite structure; a second piezoelectric layer that is provided to cover the first piezoelectric layer and the second seed layer; and a second electrode that is provided on the second piezoelectric layer. The first piezoelectric layer and the second piezoelectric layer are preferentially oriented to a (100) face..
Seiko Epson Corporation


08/20/15
20150231881 

Liquid ejecting head and liquid ejecting apparatus


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


08/20/15
20150231530 

Centrifugal microfluidic device


Disclosed is a centrifugal microfluidic device comprising a piezoelectric substrate; a rotatable platform device on the substrate; and at least one transducer on the substrate, the transducer being configured to generate a surface acoustic wave that propagates on the surface of the substrate and contacts the rotatable platform device asymmetrically to transfer energy thereto with a lateral distribution to cause rotation of the rotatable platform device. The device may be a microfluidic valve, a microfluidic mixer or a microfluidic particle concentrator..
Royal Melbourne Institute Of Technology


08/20/15
20150231394 

Cochlear implant


A device for implantation into a scalia tympani of a cochlea is disclosed. The device comprises blocks and compliant elements interconnecting the blocks with one of the compliant elements disposed between each pair of adjacent blocks.
The Regents Of The University Of Michigan


08/13/15
20150229290 

Piezoelectric thin film element, manufacturing the same, and electronic device including piezoelectric thin film element


An alkali-niobate-based piezoelectric thin film element includes a substrate, a lower electrode film on the substrate, a piezoelectric thin film on the lower electrode film, and an upper electrode film on the piezoelectric thin film. The piezoelectric thin film is made of an alkali-niobate-based piezoelectric material represented by the formula (naxkyliz)nbo3, where 0≦x≦1, 0≦y≦1, 0≦z≦0.2, and x+y+z=1.
Hitachi Metals, Ltd.


08/13/15
20150229242 

Device and harvesting energy


A miniature energy harvesting device for producing electricity from acoustical energy, stray electromagnetic energy, noise and from energy of different anatomical motions. The device comprises a housing, a mechanical spring engaged with the housing between a static and dynamic state and a first magnet engaged with the mechanical spring.

08/13/15
20150229240 

Ultrasonic motor


An ultrasonic motor having an ultrasound actuator in the form of a piezoelectric hollow cylinder with friction elements on at least one of its end surfaces, and having a rotor in effective contact with the friction elements and an electric excitation device. The actuator is subdivided in the circumferential direction in an even number of sectors sa and sb with the sectors sa and sb alternating and being adjacent in circumferential direction, and the friction elements being arranged in the range of adjacency of neighboring sectors.
Physik Instrumente (pi) Gmbh & Co. Kg


08/13/15
20150229238 

Piezoelectric device, piezoelectric actuator, hard disk drive, and inkjet printer apparatus


A piezoelectric device is provided with a piezoelectric element including a piezoelectric layer exhibiting a polarizability γ smaller than 1×10−9 (c/(v·m)) in the case where an electric field is applied until polarization is saturated and a circuit having a means to set a minimum value of a drive electric field to become larger than a positive coercive electric field of the above-described piezoelectric layer and a means to set a maximum value of the above-described drive electric field to become smaller than (pm′ (maximum value of polarization)−pr′ (quasi-remanent polarization))/(1×10−9) and, therefore, an object is to drive the piezoelectric element in an electric field range in which maximum piezoelectric characteristics are obtained, improve the characteristics of the piezoelectric device, and enhance the reliability.. .
Tdk Corporation


08/13/15
20150228694 

Monolithically integrated cmos and acoustic wave device


An integrated cmos and acoustic wave device, including: an electrically insulating piezoelectric thin film having opposed first and second surfaces; one or more cmos devices formed in a semiconductor thin film disposed on one or more portions of the first surface of the piezoelectric thin film; and at least one acoustic wave structure having electrically conductive transducer electrodes disposed on at least one of the first and second surfaces of the piezoelectric thin film.. .
The Silanna Group Pty, Ltd


08/13/15
20150228263 

Piezoelectric pickup and cell for stringed instruments


In a first aspect hereof the present invention provides an improved piezoelectric pickup which, generally, comprises a folded planar plastic piezoelectric sandwich electrically connected to a coaxial cable which, in turn, is in electrical communication with a jack or the like for connection to a pre-amp, an amplifier or the like. In a further aspect of the present invention there is provided a “cell” which is particularly adapted for use with an electric violin.

08/13/15
20150226843 

Calculation of depth and speed of objects with coded pulses based on speed changes of ultrasound/sound


During transmission, a speed of ultrasound pulses gradually reduces due to acoustic impedance. A length and a density and a sound speed of the ultrasound pulses decide their average speed in the transmitting medium, frequencies, sound intensity and detecting depth.

08/13/15
20150226618 

Piezoelectric thin-film sensor and use thereof


A piezoelectric sensor comprises a support structure, a channel extending through the support structure, a sensing material stack coupled to the support structure and extending over the channel, and a filler material disposed within the channel and over the sensing material stack. The sensing material stack comprises an structural layer, a first electrode layer disposed on the structural layer, a piezoelectric material disposed in a piezoelectric layer on the first electrode, and a second electrode disposed on the piezoelectric layer opposite the first electrode layer..
Texas Instruments Incorporated


08/13/15
20150226347 

Pneumatic valve and valve unit


A pneumatic valve comprises a valve housing in which at least two passage channels are formed which are associated with respective pneumatic connections; a movable closing element for a selective closing and releasing of the passage channels; and a piezoelectric drive for the controlled movement of the closing element. The piezoelectric drive comprises two separately controllable individual drives as well as closing elements which are associated therewith and which are movable independently of one another, with each of the closing elements being provided for a selective closing and releasing of one of the passage channels..
Marco Systemanalyse Und Entwicklung Gmbh


08/13/15
20150224325 

Energy harvesting mechanism for medical devices


Embodiments of the invention provide apparatus, systems and methods for harvesting energy from bio-kinetic events to power various implanted medical devices. One embodiment provides an energy harvesting mechanism for a cardiac pacemaker comprising an energy converter and a signal path component.
Incube Labs, Llc


08/06/15
20150222243 

Vibration element, vibrator, oscillator, electronic apparatus, and moving object


A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along another first outer edge.
Seiko Epson Corporation


08/06/15
20150221859 

Method for manufacturing ultrasound probe using depoled piezoelectric body


The present disclosure of at least one embodiment provides a method for manufacturing ultrasound probes comprising a machining process, the method including depoling a piezoelectric element as a material for the ultrasonic probes before the machining process.. .
Alpinion Medical Systems Co., Ltd.


08/06/15
20150221858 

Piezoelectric composition and piezoelectric element


Wherein, 0.05≦x≦0.7, 0.01≦y≦0.7, 0.01≦z≦0.6, 0.75≦m≦1.0, x+y+z=1 and the transition metal element me is any one or more selected from the group consisting of mn, cr, fe and co.. .

08/06/15
20150221857 

Piezoelectric material, piezoelectric element, and electronic apparatus


((na1-zliz)xba1-y)(nbyti1-y)o3(in formula, 0.70≦x≦0.99, 0.75≦y≦0.99, and 0<z<0.15)  general formula (1). .

08/06/15
20150221856 

Piezoelectric material, piezoelectric element, and electronic apparatus


The present invention provides a piezoelectric material not containing lead and potassium, showing satisfactory insulation and piezoelectricity, and having a high curie temperature. The invention relates to a piezoelectric material includes a main component containing a perovskite-type metal oxide represented by formula (1): (naxba1-y)(nbyti1-y)o3 (wherein, 0.80≦x≦0.94 and 0.83≦y≦0.94), and an additive component containing at least one element selected from mn and ni, wherein the content of the ni is 0 mol or more and 0.05 mol or less based on 1 mol of the perovskite-type metal oxide, and the content of the mn is 0 mol or more and 0.005 mol or less based on 1 mol of the perovskite-type metal oxide..
Canon Kabushiki Kaisha


08/06/15
20150221855 

Packaged piezoelectric energy harvester device with a compliant 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 compliant stopper connected to the package, where the stopper is configured to stabilize motion of the cantilever to prevent breakage. Also disclosed is a system, a method of powering an electrically powered apparatus, and methods of producing an energy harvester device..
Microgen Systems, Inc.


08/06/15
20150221853 

Piezoelectric adjustment apparatus


A piezoelectric adjustment apparatus comprises a piezoelectric stack which has a plurality of layers of piezoelectric material arranged in a stacked manner and each provided with electrodes, and comprises a lever mechanically connected to the piezoelectric stack for converting a drive movement of the stack into an adjustment movement of an adjustment element provided at the lever. A cooling device for dissipating heat from the piezoelectric stack is provided..
Marco Systemanalyse Und Entwicklung Gmbh


08/06/15
20150220909 

Transaction card with security code generator and the the same


A transaction card comprises a substrate having an ic. An interface is coupled to the ic for signal transmission; a security code generator is coupled with the ic to generate a security code for banking transaction; an electricity generating button is coupled to the security code generator to generate the security code, a display is on the substrate and is coupled to the ic for displaying the security code.

08/06/15
20150217568 

Printhead with nanotips for nanoscale printing and manufacturing


A nanoprinthead including an array of nanotip cantilevers, where each nanotip cantilever includes a nanotip at an end of a cantilever, and a method for forming the nanoprinthead. Each nanotip may be individually addressable through use of an array of piezoelectric actuators.
Xerox Corporation


08/06/15
20150217567 

Liquid ejecting head and liquid ejecting apparatus


A liquid ejecting head includes a pressure element that applies a pressure to a pressure chamber which communicates with a nozzle which ejects a liquid, and a lead electrode that is joined to a wiring substrate which supplies a driving signal which drives the piezoelectric element, and the pressure element, in which a surface of the lead electrode on the wiring substrate side in a connection region between the lead electrode and the wiring substrate becomes a concavo-convex surface, in which the lead electrode and the wiring substrate are fixed to each other at a periphery of the connection region and at least one portion of a concave portion of the concavo-convex surface of the lead electrode with a non-conductive paste, and in which the lead electrode and the wiring substrate are electrically connected to each other at a convex portion of the concavo-convex surface of the lead electrode on which the non-conductive paste is not present.. .
Seiko Epson Corporation


08/06/15
20150217379 

Apparatus and attenuation of vibration in machine tool


The present invention relates to an apparatus and method for attenuation of vibration in a machine tool, and more particularly, to an apparatus and method for attenuation of vibration in a machine tool in which a vibration of a machine tool is measured, and generates an identical frequency with a piezoelectric actuator as well as changes a phase for making dissipative interference of a generated vibration wave form.. .
Korea Institute Of Machinery & Materials


08/06/15
20150216641 

Multifunctional ortodontic bracket cover


Inside the shell some electronics, powered by a micro-battery, is embedded to measure the ph, temperature, vibration, movement, force on the tooth, etc. Using specialized transducers such as piezoelectric and ph transducers attached on the protective cover.

08/06/15
20150216557 

Medical tool for reduced penetration force


A medical device is provided having reduced penetration. The device includes a body having a central hollow channel and a piezoelectric transducer received within and secured to the body.
Actuated Medical, Inc.


08/06/15
20150216551 

Ultrasound surgical micromotor


A surgical handpiece includes a housing for receiving an insert, and an ultrasound piezoelectric transducer having a piezoelectric motor placed between a counterweight and an amplifier portion. The piezoelectric transducer is suitable for transmitting ultrasound waves from a distal end of the amplifier portion.
Societe Pour La Conception Des Applications Des Techniques Electroniques


07/30/15
20150215707 

Pblg based planar microphones


A piezoelectric, poly (γ-benzyl-α,l-glutamate) (“pblg”) planar microphone, and method for construction thereof, are disclosed. The microphone includes at least a polyester film, a piezoelectric, hot pressed poly (γ-benzyl-α,l-glutamate) (“hppblg”) layer, and an aluminum coating for the hppblg layer.
The Johns Hopkins University


07/30/15
20150215706 

Mems microphone


Mechanical resonating structures, as well as related devices and methods of manufacture. The mechanical resonating structures can be microphones, each including a diaphragm and a piezoelectric stack.
Sand 9, Inc.


07/30/15
20150214922 

Piezoelectric vibration element, piezoelectric vibrator, piezoelectric oscillator, and electronic device


A piezoelectric vibration element includes a piezoelectric substrate including (i) an excitation portion and (ii) a peripheral portion that is integrally arranged at a periphery of the excitation portion and whose thickness is smaller than that of the excitation portion. The piezoelectric vibration element further includes excitation electrodes that are arranged in a front-and-rear relationship on front and rear principal faces of the piezoelectric substrate.
Seiko Epson Corporation


07/30/15
20150214921 

Vibrating element, vibrator, oscillator, and electronic device


A vibrating element includes a piezoelectric substrate having an excitation section adapted to excite a thickness-shear vibration, and provided with a step section in each of side surfaces on both ends, and a peripheral section having a thickness smaller than a thickness of the excitation section, and the peripheral section has at least one projection section disposed on both principal surfaces in an area where a vibratory displacement when the excitation section excites a vibration is sufficiently attenuated.. .
Seiko Epson Corporation


07/30/15
20150214795 

Magnetic power generator for hybrid vehicle and/or electric power plant


A magnetic generator may be disclosed. The magnetic generator may include one or more permanent magnets which may function in one or more ways in combination with a dielectric elastomer to efficiently produce electricity.

07/30/15
20150214470 

Piezoelectric element, manufacturing piezoelectric element, and electronic apparatus


A piezoelectric element includes a piezoelectric material portion. The piezoelectric material portion is made of a piezoelectric ceramic that includes a perovskite-type metal oxide including barium titanate and mn and that has residual polarization.
Canon Kabushiki Kaisha


07/30/15
20150214469 

Piezoelectric ceramic, manufacturing the same, piezoelectric element, and electronic apparatus


A piezoelectric ceramic includes a perovskite-type metal oxide containing barium titanate, and mn. When a surface thereof along the remanent polarization direction is subjected to x-ray diffraction analysis at room temperature, the ratio of the diffraction intensity of the (002) plane to the diffraction intensity of the (200) plane is 1.0 or more, the diffraction peak of the (002) plane has a half width of 1.2° or less, and the lattice constant of the c-axis thereof and the lattice constant of the a-axis thereof satisfy the relationship 1.004≦c/a≦1.010..
Canon Kabushiki Kaisha


07/30/15
20150214468 

Piezoelectric element, piezoelectric device, inkjet head, and inkjet printer


A piezoelectric element includes, on a base, an underlying layer for controlling crystallinity of a piezoelectric layer, and the piezoelectric layer. The piezoelectric layer includes a crystal with an abo3-type structure having at least pb at a sites.
Konica Minolta, Inc.


07/30/15
20150214467 

Vibrator and electronic device including the same


There are provided a vibrator and an electronic device including the same. The vibrator includes: a housing having an internal space; an elastic member having both ends fixed to the housing so as to be disposed in the internal space in a state in which elastic deformation is possible; and a piezoelectric element mounted on one surface of the elastic member, wherein the piezoelectric element is fixed to the elastic member by soldering..
Samsung Electro-mechanics Co., Ltd.


07/30/15
20150214466 

Vibration generating portable terminal


The vibration generating apparatus includes: a diaphragm formed of a metal; a piezoelectric plate mounted on at least one surface of the diaphragm; a fixed member coupled to the diaphragm along an outer circumference of the diaphragm to fix the diaphragm; and wherein the fixed member is formed of a material having a young's modulus lower than that of steel.. .
Samsung Electro-mechanics Co., Ltd.


07/30/15
20150214465 

Piezoelectric element, piezoelectric device, ink-jet head, and ink-jet printer


A piezoelectric element having an electrode, a seed layer for controlling the crystal orientation of a piezoelectric layer, and the piezoelectric layer stacked in this order from the substrate side. The seed layer is composed of two or more layers stacked together each comprising crystals of spherical particles..
Konica Minolta, Inc.


07/30/15
20150214464 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a vibrating member of which both end portions are fixed to the housing; a piezoelectric element fixed to a top surface of the vibrating member; a mass body disposed on the piezoelectric element; and a coupling member connecting the mass body and the vibrating member to each other and including a hook portion connected to the vibrating member by elastic deformation.. .
Samsung Electro-mechanics Co., Ltd.


07/30/15
20150214463 

Vibration generating apparatus


There is provided a vibration generating apparatus including: an elastic member having both end portions fixed to a housing; a piezoelectric element installed on one surface of the elastic member; and a circuit board connected to the piezoelectric element, wherein the elastic member has support parts formed on both side surfaces of both end portions thereof and bent downwardly in order to be installed in the housing, and a portion of the circuit board passing between the support parts has a flat panel shape.. .
Samsung Electro-mechanics Co., Ltd.


07/30/15
20150214462 

Microelectromechanical gyroscopes and related apparatus and methods


In one embodiment, an apparatus includes a resonant structure having a plate, a drive electrode and a sense electrode. The resonant structure defines an axis substantially orthogonal to a plane defined by the plate when the resonant structure is not excited.
Sand9, Inc.


07/30/15
20150214069 

Piezoelectric thin film process


A process of forming an integrated circuit containing a piezoelectric thin film by forming a sol gel layer, drying in at least 1 percent relative humidity, baking starting between 100 and 225° c. Increasing to between 275 and 425° c.
Texas Instruments Incorporated


07/30/15
20150212571 

Wake-up signal generating device, and touch input device


A touch input device includes a touch sensor and a wake-up control unit. The touch sensor includes a piezoelectric sensor and a detection signal generating unit.
Murata Manufacturing Co., Ltd.


07/30/15
20150212109 

Mems sensor


Embodiments of the invention provide a mems sensor, including a flexible substrate having a vibrator and a sensor, a mass body coupled with the flexible substrate, and a support part supporting the flexible substrate. The vibrator includes a multilayer piezoelectric part and an electrode part connected to the multilayer piezoelectric part, and the sensor includes a piezoelectric material and an electrode part.
Samsung Electro-mechanics Co., Ltd.


07/30/15
20150211146 

Methods and apparatuses for preparing a ferroelectric crystal


Systems and methods are provided for preparing multi-component ferroelectric crystals (e.g., pmn-pt, amongst others) having piezoelectric properties. The crystals are fabricated using a system that employs multiple heaters and sensors that are located along the length of a crystal growth chamber.
Innovia Materials (shanghai) Co., Ltd.


07/30/15
20150209564 

Ultrasound device and therapeutic methods


The present invention is directed to an ultrasound device for use in implementing therapeutic treatments and transdermal analyte delivery. The device includes a piezoelectric transducer that efficiently and safely converts electrical energy to ultrasonic waves, and has a unique structure including a piezoelectric element positioned between two opposing, flexible concave covers.
Drexel University


07/30/15
20150209493 

Negative pressure dressing and using same


Disclosed herein are apparatuses and methods for treating a wound by applying reduced or negative pressure to the wound. The apparatus can include a wound cover, a fluid collection container, a vacuum pump, an inflation pump, and one or more conduits.
Bluesky Medical Group Inc.


07/23/15
20150207490 

Piezoelectric 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


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


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


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


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


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


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


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
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
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
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




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

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