Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Piezoelectric elements and devices

Subclass of:

310 - Electrical generator or motor structure

310300000 - NON-DYNAMOELECTRIC

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
310328000 With mechanical energy coupling means 478
310321000 Combined with resonant structure 314
310314000 Electrical systems 262
310313000 Surface acoustic wave devices 197
310365000 Electrode arrangement 164
310348000 With mounting or support means 126
310367000 Piezoelectric element shape 94
310363000 Electrode materials 93
310341000 With temperature modifier and/or gas or vapor atmosphere control 92
310357000 Orientation of piezoelectric polarization 58
310326000 Combined with damping structure 33
310340000 Encapsulated or coated 28
310346000 With temperature compensating structure 27
310360000 Rotation of crystal axis (e.g., cut angle) 21
310312000 Adding or subtracting mass 20
310320000 Piezoelectric slab having different resonant frequencies at different areas 9
310345000 Supported by elastic material 5
20090267459COMPOSITE MATERIAL VIBRATOR - A composite material vibrator includes a vibrating component that is composed of a material having a first acoustic impedance Z10-29-2009
20110278993METHOD FOR MANUFACTURING COMPOSITE PIEZOELECTRIC SUBSTRATE AND PIEZOELECTRIC DEVICE - A piezoelectric device is manufactured in which the material of a supporting substrate can be selected from various alternative materials. Ions are implanted into a piezoelectric substrate to form an ion-implanted portion. A temporary supporting substrate is formed on the ion-implanted surface of the piezoelectric substrate. The temporary supporting substrate includes a layer to be etched and a temporary substrate. The piezoelectric substrate is then heated to be divided at the ion-implanted portion to form a piezoelectric thin film. A supporting substrate is then formed on the piezoelectric thin film. The supporting substrate includes a dielectric film and a base substrate. The temporary supporting substrate is made of a material that produces a thermal stress at the interface between the temporary supporting substrate and the piezoelectric thin film less than the thermal stress at the interface between the supporting substrate and the piezoelectric thin film.11-17-2011
20110198971 TRANSDUCER COMPRISING A COMPOSITE MATERIAL AND METHOD OF MAKING SUCH A COMPOSITE MATERIAL - The invention provides a transducer for converting between mechanical and electrical energies. The transducer comprises an EAP laminate with a layer of an elastomer material arranged between two electrode layers, each electrode layer comprising a second layer of a plastically deformable material, e.g. metal or a thermoplastic material, and a third layer of an electrically conductive material. Due to the layer of plastically deformable material, the electrode layers can be shaped into various shapes which can provide anisotropic characteristics of the transducer.08-18-2011
20110109203FLEXIBLE PIEZOELECTRIC STRUCTURES AND METHOD OF MAKING SAME - A flexible piezoelectric structure and a method of making the structure are disclosed. A piezoelectric film having a relatively high piezoelectric coefficient is attached to a flexible substrate. The piezoelectric film is fabricated on a different substrate and transferred to the flexible substrate by contact.05-12-2011
20120074817ACTUATOR - An actuator includes a sheet having dielectric elastomer layers and conductive rubber layers provided on the front and back faces of each dielectric elastomer layer. The sheet is wrapped and rolled about a coil spring. The actuator expands the rolled sheet along an expansion direction of the coil spring by applying a voltage to the conductive rubber layers on the front and back faces of the dielectric elastomer layer, and contracts the rolled sheet along a contraction direction of the coil spring by stopping the application of the voltage. The actuator further includes a fiber layer located between the coil spring and the rolled sheet wrapped about the coil spring.03-29-2012
Entries
DocumentTitleDate
20100019620PIEZOCERAMIC MULTILAYER ACTUATOR AND METHOD FOR ITS PRODUCTION - In a piezoelectric multilayer actuator (01-28-2010
20090108706FERROELECTRIC OXIDE, PROCESS FOR PRODUCING THE SAME, PIEZOELECTRIC BODY, AND PIEZOELECTRIC DEVICE - A composition of a ferroelectric oxide represented by General Formula (a) is adjusted such that the most stable crystal structures X and Y of ACO04-30-2009
20130076204PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST CLEANING DEVICE - A piezoelectric material containing a barium bismuth calcium niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. The piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, calcium, and niobium; and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.37≦a≦0.40, when Bi/Nb=b, 0.020≦b≦0.065, and when Ca/Nb=c, 0.007≦c≦0.10. The tungsten content on a metal basis is 0.4 to 2.0 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.03-28-2013
20130076203CERAMIC BODY AND METHOD FOR PRODUCING THE SAME - A ceramic body including therein conductors more effectively prevents ingress of moisture into voids between the conductors and the ceramic body. A supercritical fluid containing a monomer flows in the voids between internal electrode layers and a ceramic laminated body. Then, the voids between the internal electrode layers and the ceramic laminated body are filled with a polymer by the polymerization of the monomer.03-28-2013
20130088119PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST CLEANING DEVICE - A piezoelectric material including a strontium calcium sodium niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are strontium, calcium, sodium, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Sr/Nb=a, 0.320≦a≦0.430, when Ca/Nb=b, 0.008≦b≦0.086, and when Na/Nb=c, 0.180≦c≦0.200. The tungsten content on a metal basis is 0.40 to 3.20 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.04-11-2013
20130049532CERAMIC ELECTRONIC COMPONENT AND METHOD OF MANUFACTURING THE SAME - There are provided a ceramic electronic component and a method of manufacturing the same. The ceramic electronic component includes: a ceramic element; and an internal electrode layer formed within the ceramic element, having a thickness of 0.5 μm or less, and including anon-electrode region formed therein, wherein an area ratio of the non-electrode region to an electrode region of the internal electrode layer, in a cross section of the internal electrode layer is between 0.1% and 10%, and the non-electrode region includes a ceramic component.02-28-2013
20130088120PIEZOELECTRIC MATERIAL, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST CLEANING DEVICE - A piezoelectric material including a barium bismuth niobate-based tungsten bronze structure metal oxide having a high degree of orientation is provided. A piezoelectric element, a liquid discharge head, an ultrasonic motor, and a dust cleaning device including the piezoelectric material are also provided. A piezoelectric material includes a tungsten bronze structure metal oxide that includes metal elements which are barium, bismuth, and niobium, and tungsten. The metal elements satisfy following conditions on a molar basis: when Ba/Nb=a, 0.30≦a≦0.40, and when Bi/Nb=b, 0.012≦b≦0.084. The tungsten content on a metal basis is 0.40 to 3.00 parts by weight relative to 100 parts by weight of the tungsten bronze structure metal oxide. The tungsten bronze structure metal oxide has a c-axis orientation.04-11-2013
20130057112ELECTRONIC COMPONENT - An electronic component comprises an element body, an external electrode, and an insulating resin coating layer. The element body has a pair of end faces opposed to each other, a pair of principal faces extending so as to connect the pair of end faces and opposed to each other, and a pair of side faces extending so as to connect the pair of principal faces and opposed to each other. The external electrode is formed so as to cover at least a partial region of the principal face and/or a partial region of the side face and has a plating layer comprised of Sn or an Sn alloy. The insulating resin coating layer covers at least the portion of the external electrode formed so as to cover the side face.03-07-2013
20130062994LAMINATED CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - A method for manufacturing a laminated ceramic electronic component enables formation of a plating film as at least a portion of an external electrode which connects exposed ends of internal electrodes. A component main body including a plurality of ceramic layers and a plurality of internal electrodes partially exposed from the component main body is prepared such that the component main body has a conductive region formed by diffusion of a conductive component included in the internal electrodes at the end surfaces of the ceramic layers located between adjacent exposed ends of the plurality of internal electrodes. The ceramic layers are preferably composed of a glass ceramic containing a glass component of about 10 weight % or more. A plating film is formed directly on the component main body by growing the exposed ends of the internal electrodes and the conductive region as nucleuses for plating deposition.03-14-2013
20090236933PIEZOELECTRIC DEVICE AND METHOD OF PRODUCTION THEREOF - A piezoelectric device includes a lower electrode, a piezoelectric film and an upper electrode laminated in this order on a support. An oxide film containing a material that forms a lower electrode is formed on a side surface of the piezoelectric film. The piezoelectric device is produced such that an upper electrode and a piezoelectric film are patterned by dry-etching through a mask formed on a side of the upper electrode of the piezoelectric device member and thereafter a side surface of the patterned piezoelectric film (a film adhered to a side wall) is oxidized to form an oxide film.09-24-2009
20130162100DIELECTRIC COMPOSITION AND CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There is provided a dielectric composition, including: a basic powder including Ba06-27-2013
20130162101DIELECTRIC SINTERED BODY, METHOD FOR MANUFACTURING SAME, AND DIELECTRIC RESONATOR - A dielectric sintered body of the present invention contains Ba, Nb, and at least one of Zn and Co, as main components, and K and Ta as subcomponents. The ratio A of the peak intensity p06-27-2013
20120126663METHOD FOR PRODUCING AN ELECTROMECHANICAL CONVERTER - The present invention relates to a method for producing an electromechanical, for example piezoelectric, transducer, comprising the steps of: A) applying a monolayer of spacer elements (05-24-2012
20090009027Method and apparatus to detect nanometer particles in ultra pure liquids using acoustic microcavitation - An apparatus to produce acoustic cavitation by controlling cavitation events in a liquid insonification medium utilizing a waveform to excite a transducer with a series of bipolar inharmonic tone bursts having medium recovery intervals between respective bursts so that the medium repeatedly recovers from cavitation events between bursts. The apparatus may be used to clean a semiconductor wafer, to de-coat a painted surface having, to induce a chemical reaction, and/or to provide recycled paper made from inked paper de-inked by cavitation. Cavitation events are generated using a transducer and a waveform generator, e.g., square wave tone bursts, to excite the transducer with a signal controlled in frequency, burst repetition rate, duty-cycle and/or amplitude, e.g., utilizing bursts having a frequency between 500 KHz and 10 MHz, and a duty cycle between 0.1% and 70%.01-08-2009
20110291522Ceramic Material, Method for the Production of the Ceramic Material and Component Comprising the Ceramic Material - The invention relates to a ceramic binary material and to a method for the production thereof. The material has piezoelectric properties and has a composition of the formula (1−x)(Bi12-01-2011
20110291523PACKAGE MANUFACTURING METHOD, PACKAGE, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC DEVICE AND RADIO TIMEPIECE - This package manufacturing method is a method for manufacturing a package using a rivet having a flat plate-shaped head portion and a core portion protruding from a rear surface of the head portion. The package includes: a plurality of substrates that are bonded to each other: a cavity that houses an object to be housed in an airtightly sealed state; the core portion which is disposed in a through hole that penetrates a base substrate and which electrically connects the object to be housed with the outside; and a glass frit that is filled between the through hole and the core portion and is fired to form a seal between the through hole and the core portion. The package manufacturing method includes: a rivet disposing step of inserting the core portion into the through hole until the rear surface of the head portion comes into contact with a first surface of the base substrate; a glass frit filling step of filling the glass frit in a paste form between the through hole and the core portion; and a firing step of integrally fixing the through hole, the rivet and the glass frit by firing the filled glass frit, and sealing between the through hole and the core portion. A gas relief passage, which leads from a base end of the core portion to a side surface or a front surface of the head portion, is formed on the rear surface of the head portion of the rivet.12-01-2011
20120098386Ceramic Material, Method for Producing said Ceramic Material and Component Comprising said Ceramic Material - The invention relates to a ceramic material of the formula [(Bi04-26-2012
20090102316LAMB WAVE RESONATOR - A Lamb wave resonator includes a piezoelectric layer, and a first electrode against a first face of the piezoelectric layer. The first electrode includes fingers and a contact arm, with each finger including a first side in contact with the contact arm and two other sides parallel to one another. Portions of the piezoelectric layer are at least partially etched between the two fingers to form a recess. The fingers are spaced apart from one another by a distance W calculated according to the following equation:04-23-2009
20090189482Piezoelectric Thin Film Device - A piezoelectric thin film device according to the present invention comprises a lower electrode, a piezoelectric thin film and an upper electrode, in which the piezoelectric thin film is formed of an alkali niobium oxide-based perovskite material expressed by (K07-30-2009
20100141085IONIC POLYMER DEVICES AND METHODS OF FABRICATING THE SAME - An ionic polymer composite device and methods for fabricating the ionic polymer composite device are provided. The ionic polymer composite device includes two extended electrode layers, each extended electrode layer including at least one ionic polymer with a plurality of electrically conductive particles, and a dielectric layer including at least one sulfonated poly ether sulfone polymer or a derivative between the two extended electrode layers.06-10-2010
20110193448LAMINATED ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - A method for manufacturing a laminated electronic component in which, when first plating layers that respectively connect a plurality of internal electrodes to each other and second plating layers that improves the mountability of a laminated electronic component are formed as external terminal electrodes, the entire component main body is treated with a water repellent agent after the formation of the first plating layers, and the water repellent agent on the first plating layers is then removed before the formation of the second plating layers. The gaps between the end edges of the first plating films on the outer surface of the component main body and the outer surface of the component main body are filled with the water repellent agent.08-11-2011
20090267446PIEZOELECTRIC/ELECTROSTRICTIVE CERAMICS AND PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE - The piezoelectric/electrostrictive properties and mechanical durability of a piezoelectric/electrostrictive ceramic can be improved. A piezoelectric/electrostrictive device has a laminated structure in which an electrode film, a piezoelectric/electrostrictive film, an electrode film, an piezoelectric/electrostrictive film, and an electrode film are laminated in the order mentioned on a thin portion of a substrate. The piezoelectric/electrostrictive films are ceramic films with a matrix of perovskite oxide that contains lead (Pb) as an A-site component and nickel (Ni), aluminum (Al), niobium (Nb), zirconium (Zr), and titanium (Ti) as B-site components. The piezoelectric/electrostrictive films are formed by firing as a unit the substrate that contains aluminum oxide and an intermediate coating film of perovskite oxide that contains components other than aluminum so that aluminum oxide is diffused from the substrate to the intermediate coating film.10-29-2009
20090289525PIEZOELECTRIC CERAMIC COMPOSITION AND PIEZOELECTRIC DEVICE - There is provided a piezoelectric ceramic composition that contains Na, Bi, Ti and Co wherein the composition ratio of Na, Bi, Ti and Co in terms of oxides thereof is in the following composition range (1):11-26-2009
20120293040Method for Manufacturing Piezoelectric Element and Piezoelectric Element Manufactured using same - A stress relaxing layer L11-22-2012
20110221302BISMUTH IRON OXIDE POWDER, MANUFACTURING METHOD FOR THE BISMUTH IRON OXIDE POWDER, DIELECTRIC CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (A) grains including a bismuth iron oxide having a perovskite-type crystal structure; (B) grains including a bismuth iron oxide having a crystal structure classified to a space group Pbam; and (C) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group I23. The dielectric ceramics are made of bismuth iron oxide in which the bismuth iron oxide crystals having the crystal structure classified to the space group Pbam are distributed at a grain boundary of crystal grains of the bismuth iron oxide crystals having the perovskite-type crystal structure.09-15-2011
20110140571PACKAGE MANUFACTURING METHOD, PIEZOELECTRIC VIBRATOR, AND OSCILLATOR - There is provided a package manufacturing method capable of manufacturing high-quality and high-accuracy products without requiring complicated processes. A method for manufacturing a package including a base board and a lid board bonded to each other so as to form a cavity at an inner side and penetration electrodes that electrically connect the inside of the cavity to the outside of a base board made of a glass material includes a penetration hole forming step of forming penetration holes in a base board wafer; a rivet member insertion step of inserting conductive rivet members made of a metal material into the penetration holes; a welding step of heating the base board wafer to a temperature higher than the softening point of the glass material so as to weld the base board wafer to the rivet members; and a cooling step of cooling the base board wafer. Each of the rivet members has one end of which the sectional area is larger than the other portion, and the one end is positioned in the outside of the base board.06-16-2011
20130214639PIEZOELECTRIC CERAMIC, METHOD FOR MAKING THE SAME, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, AND ULTRASONIC MOTOR - A piezoelectric ceramic that includes barium titanate and 0.04 mass % or more and 0.20 mass % or less manganese relative to barium titanate. The piezoelectric ceramic is composed of crystal grains. The crystal grains include crystal grains A having an equivalent circular diameter of 30 μm or more and 300 μm or less and crystal grains B having an equivalent circular diameter of 0.5 μm or more and 3 μm or less. The crystal grains A and the crystal grains B individually form aggregates and the aggregates of the crystal grains A and the aggregates of the crystal grains B form a sea-island structure.08-22-2013
20090230815MICRO ELECTRO MECHANICAL SYSTEM, SEMICONDUCTOR DEVICE, AND MANUFACTURING METHOD THEREOF - The present invention provides a MEMS and a sensor having the MEMS which can be formed without a process of etching a sacrifice layer. The MEMS and the sensor having the MEMS are formed by forming an interspace using a spacer layer. In the MEMS in which an interspace is formed using a spacer layer, a process for forming a sacrifice layer and an etching process of the sacrifice layer are not required. As a result, there is no restriction on the etching time, and thus the yield can be improved.09-17-2009
20090115286Electrically conductive thin film formed from an ionic liquid and carbon nanotubes having a high aspect ratio, and actuator element comprising the thin film - The present invention provides an actuator exhibiting improved performance. The actuator is formed of an electrically conductive thin film formed from an ionic liquid and carbon nanotubes having an aspect ratio of not less than 1005-07-2009
20080315717Piezoelectric Actuator and Method for Producing the Same - A method for producing a piezoelectric actuator has the following steps: providing a plurality of piezoelectric material layers (12-25-2008
20120194031LAMINATED CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - In a method of forming an external electrode by growing plated depositions on exposed ends of a plurality of internal electrodes in a component main body, the component main body is polished to increase exposure of the internal electrodes. To prevent decreased external electrode fixing strength, a radius of curvature is reduced to about 0.01 mm or less for an R chamfered section formed in a ridge section of the component main body during polishing by ion milling, and exposed ends of the internal electrodes are recessed from end surfaces of the component main body with a recess length of about 1 μm or less. Plating films to serve as external electrodes are formed to extend from the end surfaces of the component main body across the R chamfered section, and include end edges located on at least one of the principal surfaces and the side surfaces.08-02-2012
20090322182Electromechanical Actuators - Apparatus including layer of polarizable material located between first and second electrodes. Polarizable material has block copolymeric composition including elastomeric domain blocks and conductive domain blocks. Method that includes providing layer of polarizable material having block copolymeric composition including elastomeric domain blocks and conductive domain blocks, first and second electrodes being on opposite surfaces of the layer. Method also includes applying voltage differential between electrodes, causing dimension of layer to change.12-31-2009
20090140605COMPLEX OXIDE FILM AND METHOD FOR PRODUCING SAME, DIELECTRIC MATERIAL INCLUDING COMPLEX OXIDE FILM, PIEZOELECTRIC MATERIAL, CAPACITOR, PIEZOELECTRIC ELEMENT AND ELECTRONIC DEVICE - The invention relates to a method for a complex oxide film having a high relative dielectric constant and a thickness which can be arbitrarily controlled, which is obtained, without using any large-scale equipment, by forming a metal oxide layer containing a first metal element on substrate surface and then allowing the layer to react with a solution containing a second metal ion to thereby form a complex oxide film containing the first and second metal elements, and a production method thereof. Further, the invention relates to a dielectric material and a piezoelectric material containing the complex oxide film, a capacitor and a piezoelectric element including the material, and an electronic device comprising the element.06-04-2009
20130140946LAMINATED CERAMIC ELECTRONIC COMPONENT - Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and Al/Si alloy-containing internal electrodes at a plurality of specific interface between ceramic layers; and an external electrode formed on the outer surface of the laminate, wherein the Al/Si ratio of the Al/Si alloy is 85/15 or more.06-06-2013
20110169373Multi-Layer Piezoelectric Element - A multi-layer piezoelectric element of high durability wherein the internal electrodes and the external electrodes do not break even when operated continuously over a long period of time under high electric field and high pressure is provided. The first multi-layer piezoelectric element according to the present invention comprises a stack formed by stacking piezoelectric layers and internal electrodes alternately one on another and external electrodes formed on a first side face and on a second side face of the stack, wherein one of the adjacent internal electrodes is connected to the external electrode formed on the first side face and the other internal electrode is connected to the external electrode formed on the second side face, and the external electrodes include an electrically conductive material and glass and is formed from a porous electrically conductive material that has a three-dimensional mesh structure.07-14-2011
20110001391DRIVE UNIT - A drive unit includes an ultrasonic actuator having an actuator body generating vibration, and diver elements attached to the actuator body to output drive force by generating orbit motion in response to the vibration of the actuator body; and a movable body contacting the driver elements, and relatively moving with respect to the ultrasonic actuator. In a surface of the movable body, which contacts the driver elements, smoothed portions are interleaved with recessed portions which are recessed with respect to the smoothed portions.01-06-2011
20110241479CERAMIC, AND PIEZOELECTRIC/ELECTROSTRICTION ELEMENT - A ceramic having a plurality of crystal grains that contain lithium and boron, the crystal grains are arranged in a planar direction, and the crystal grains have a mutually same crystal orientation with respect to the thickness direction,10-06-2011
20100231088WAFER, WAFER POLISHING APPARATUS, WAFER POLISHING METHOD, METHOD OF FABRICATING PIEZOELECTRIC VIBRATOR, PIEZOELECTRIC VIBRATOR, OSCILLATOR, ELECTRONIC APPARATUS AND RADIOWAVE TIMEPIECE - To provide a wafer preventing a breakage of a crack or a chip off from being brought about in a polishing step and a polishing apparatus and a polishing method of polishing the wafer, there is provided a wafer in a shape of a plate substantially in an angular rectangular shape used as a raw material of a piezoelectric vibrator. All of corner portions D09-16-2010
20090026881PIEZOELECTRIC FAN, METHOD OF COOLING A MICROELECTRONIC DEVICE USING SAME, AND SYSTEM CONTAINING SAME - A piezoelectric fan comprises a blade (01-29-2009
20110248602ACOUSTIC RESONATOR COMPRISING AN ELECTRET AND METHOD OF PRODUCING SAID RESONATOR, APPLICATION TO SWITCHABLE COUPLED RESONATOR FILTERS - Acoustic resonator comprising an electret, and method of producing said resonator, application to switchable coupled resonator filters.10-13-2011
20110133598ELECTROMECHANICAL TRANSDUCER COMPRISING A POLYURETHANE POLYMER WITH POLYTETRAMETHYLENE GLYCOL ETHER UNITS - The present invention provides an electromechanical transducer comprising a dielectric elastomer with contact by a first electrode and a second electrode, said dielectric elastomer comprising a polyurethane polymer comprising the reaction product of A) a polyisocyanate and/or B) a polyisocyanate prepolymer with C) a compound having at least two isocyanate-reactive groups wherein the polyisocyanate prepolymer B) and/or the compound C) having at least two isocyanate-reactive groups comprise polytetramethylene glycol ether units of the formula (I):06-09-2011
20080303377PIEZOELECTRIC SUBSTANCE AND PIEZOELECTRIC ELEMENT - A piezoelectric substance has a substrate, an electrode formed on the substrate, and a piezoelectric film formed on the electrode. The piezoelectric film is formed of crystals having a main phase of (Na12-11-2008
20100181867PIEZOELECTRIC VIBRATION DEVICE SYSTEM AND ELECTRONICS APPARATUS - A piezoelectric vibration device system includes a piezoelectric vibration device that performs predefined movements using the vibration of the piezoelectric element; and a control unit that controls the behavior of the piezoelectric vibration device by controlling the frequency of the piezoelectric element, where the control unit includes: a first signal generating unit that generates a fundamental frequency signal having a fundamental frequency adjacent to the mechanical resonance frequency of the piezoelectric element; a second signal generating unit that generates a variable frequency signal whose frequency periodically rises or falls; and a frequency modulator that generates a frequency modulated signal, whose frequency changes into one of three or more frequencies existing around the fundamental frequency periodically and in sequence, by executing frequency modulation using the fundamental frequency signal and the variable frequency signal, and that outputs the frequency modulated signal as a control signal for controlling the piezoelectric vibration device.07-22-2010
20120306314PIEZOELECTRIC THIN FILM ELEMENT, AND PIEZOELECTRIC THIN FILM DEVICE - Disclosed are a piezoelectric thin film element and a piezoelectric thin film device which have improved piezoelectric properties and high performance and can be produced in improved yields. The piezoelectric thin film element (12-06-2012
20110095648NONLINEAR OSCILLATOR FOR VIBRATION ENERGY HARVESTING - An oscillator apparatus and method for vibration energy harvesting includes a nonlinear oscillator (e.g. piezoelectric, magnetic or liquid oscillator) configured in association with a potential energy profile to enhance a desirable nonlinear effect with a larger displacement and a wider spectrum response. A cantilever beam associated with a vibrating structure generates a mechanical energy in response to vibration forces. A mechanical-to-electrical power converter can be coupled to the nonlinear oscillator to convert the mechanical power into an electrical power. The frequency response of the nonlinear oscillator adapts to varying ambient vibrations and auto-tunes with respect to the ambient vibration change for wireless and MEMS applications.04-28-2011
20120043854CERAMIC ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME - A ceramic electronic component has a ceramic element assembly, external electrodes, and metal terminals. The external electrodes are arranged on the surface of the ceramic element assembly. The external electrodes contain a sintered metal. The metal terminals are electrically connected to the external electrodes, respectively. The external electrode and the metal terminal are directly diffusion-bonded by diffusion of metal in the metal terminals into the external electrodes. The above arrangement provides a ceramic electronic component having highly reliable metal particle bonding and a method for manufacturing the same.02-23-2012
20120043853COMPOUND HAVING PIEZOELECTRIC PROPERTY, PIEZOELECTRIC DEVICE, LIQUID DISCHARGE HEAD USING THE PIEZOELECTRIC DEVICE, AND ULTRASONIC MOTOR USING THE PIEZOELECTRIC DEVICE - A compound having a tungsten bronze structure exhibiting a high Curie temperature, good insulating resistance and mechanical quality factor, and excellent piezoelectric properties is provided. The compound contains a tungsten bronze structure oxide represented by general formula (1):02-23-2012
20120062068MULTI-MODE BULK-ACOUSTIC-WAVE RESONATORS - The various embodiments of the present disclosure relate generally bulk-acoustic-wave resonators. An exemplary embodiment of the present invention provides a bulk-acoustic-wave resonator comprising an acoustic reflector, a substantially c-axis oriented hexagonal crystal structure, and a plurality of electrodes. The crystal structure is solidly-mounted to the acoustic reflector. The bulk-wave resonator resonates in at least two non-harmonically-related operational modes.03-15-2012
20090140604HARVESTING ENERGY FROM FLOWING FLUID - Electrical energy is produced at a remote or close site by converting kinetic energy from fluid flow with membranes that generates electrical energy in response to deformation by the fluid flow passing though a piezo electric medium attached to the deforming membranes. Sets of membranes define variable fluid flow restrictors that oscillate due to interaction of the force of fluid flow and Bernoulli Effect. The device can be tuned to different flow regimes in order to enhance energy conversion efficiency. Each membrane may include one or more layers of piezoelectric material separated by insulating/stiffening layers. Further, the device may be mounted in a secondary flow path such as a side package or annular tube.06-04-2009
20090079298MULTI-CANTILEVER MEMS SENSOR, MANUFACTURING METHOD THEREOF, SOUND SOURCE LOCALIZATION APPARATUS USING THE MULTI-CANTILEVER MEMS SENSOR, SOUND SOURCE LOCALIZATION METHOD USING THE SOUND SOURCE LOCALIZATION APPARATUS - Disclosed herein is a multi-cantilever MEMS sensor functioning as a mechanical sensor having a plurality of cantilevers, replacing a conventional DSP based sound source localization algorithm and reducing production cost when the MEMES sensor applied to mass-produced robots, a manufacturing method thereof, a sound source localization apparatus using the multi-cantilever MEMS sensor and a sound source localization method using the sound source localization apparatus. The multi-cantilever MEMS sensor comprises a plurality of cantilevers 03-26-2009
20120119616Piezoelectric Multilayer Component - A piezoelectric multilayer component includes a stack of sintered piezoelectric layers and inner electrodes that are arranged there between. A piezoelectric layer includes at least one piezoelectric film. At least one of the piezoelectric films is designed as a weakening film, wherein the thickness of the weakening film is substantially smaller than the thickness of at least one of the other piezoelectric films.05-17-2012
20100289378INFORMATION PROCESSOR AND METHOD FOR THE PRODUCTION THEREOF - An information converter has at least two material layers having polygonal base surfaces, which are connected to each other in a shear-rigid way, wherein at least in one material layer a change of length can be induced. The polygonal base surface has at least two different interior angles.11-18-2010
20120161576LAMINATE TYPE ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - In a method of manufacturing a laminate type electronic component, while the distance between adjacent exposed ends of a plurality of internal electrodes is adjusted preferably to be about 50 μm or less, a plurality of conductive particles composed of Pd, Pt, Cu, Au, or Ag are provided on the surface of a component main body. The conductive particles have an average particle size of about 0.1 nm to about 100 nm, which are distributed in island-shaped configurations over the entire surface of the component main body, while the average distance between the respective conductive particles is adjusted to fall within the range of about 10 nm to about 100 nm. The component main body is subjected to electrolytic plating such that plating growth develops in and around a region including the respective exposed ends of the plurality of internal electrodes.06-28-2012
20100207487SENSOR NETWORK INCORPORATING STRETCHABLE SILICON - A sensor network is described which includes a stretchable silicon substrate, and a plurality of nodes fabricated on the stretchable silicon substrate. The nodes include at least one of an energy harvesting and storage element, a communication device, a sensing device, and a processor. The nodes are interconnected via interconnecting conductors formed in the substrate.08-19-2010
20120169180LAMINATE TYPE ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - In a method of manufacturing a laminate type electronic component, when a heat treatment is carried out after plating films, which at least partially define external electrodes, are formed by growing plated depositions deposited on exposed ends of a plurality of internal electrodes in a component main body, the presence of the plating films may not only interfere with moisture release, but may also cause blisters or bulge defects in the plating films, while moisture such as a plating solution in the component main body is removed by evaporation. To avoid such problems, cuts to divide exposed ends into multiple sections are formed in extending sections of internal electrodes. Thus, plating films include slits extending in the stacking direction at locations corresponding to positions of the cuts.07-05-2012
20120313481Electroactive Polymer Generator for Converting Mechanical Energy into Electrical Energy - An electroactive polymer generator is configured to convert mechanical energy into electrical energy during expansion and compression of the polymer generator. The polymer generator comprises a device for detecting expansion and compression states. The device comprises at least one acceleration sensor.12-13-2012
20120313482METHOD OF FORMING A VDF OLIGOMER OR CO-OLIGOMER FILM ON A SUBSTRATE AND AN ELECTRICAL DEVICE COMPRISING THE VDF OLIGOMER OR CO-OLIGOMER FILM ON THE SUBSTRATE - A method of forming a vinylidene fluoride (VDF) oligomer or co-oligomer film on a substrate is disclosed. The method comprises forming a VDF oligomer or co-oligomer precursor solution; depositing the VDF oligomer or co-oligomer precursor solution onto the substrate to form a preliminary VDF oligomer or co-oligomer film on the substrate; and applying uniaxial pressure on the preliminary VDF oligomer or co-oligomer film and the substrate at an elevated temperature to form the VDF oligomer or co-oligomer film on the substrate. The substrate may comprise a metal surface which may be used as a bottom electrode and a top electrode may be deposited on the VDF oligomer or co- oligomer film The VDF oligomer or co-oligomer film, the bottom electrode on the substrate and the top electrode on the VDF oligomer or co-oligomer film form an electrical device.12-13-2012
20120256521LAMINATED PIEZOELECTRIC MATERIAL, ULTRASOUND PROBE, AND ULTRASOUND DIAGNOSTIC APPARATUS - A laminated piezoelectric material has a four-layered piezoelectric material and electrode layers for applying a voltage to each layer of the four-layered piezoelectric material. Each piezoelectric material has an inorganic piezoelectric material with a remanent polarization in a thickness direction. The layers are laminated so that a direction of an electric field is counter to a direction of the remanent polarization in one of the layers and the direction of the electric field coincides with the direction of the remanent polarization in the other three layers, or the direction of the electric field coincides with the direction of the remanent polarization in one of the layers and the direction of the electric field is counter to the direction of remanent polarization in the other three layers, when a voltage is applied to each piezoelectric material of the four-layered piezoelectric material via electrode layers.10-11-2012
20120326559LAMINATED CERAMIC ELECTRONIC COMPONENT - Provided is a laminated ceramic electronic component having excellent mechanical characteristics, internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, low defective rate, and various properties. The laminated ceramic electronic component includes: a laminate which has a plurality of laminated ceramic layers and internal electrodes at a plurality of specific interfaces between the ceramic layers and having an Al/Ni alloy as a component; and an external electrode formed on the outer surface of the laminate, wherein the Al/Ni ratio of the Al/Ni alloy is 85/15 or more.12-27-2012
20120326558LAMINATED CERAMIC ELECTRONIC COMPONENT - A laminated ceramic electronic component having excellent mechanical characteristics and internal electrode corrosion resistance, high degree of freedom in ceramic material design, low cost, and low defective rate includes a laminate having a plurality of laminated ceramic layers and a plurality of Al/Cu alloy-containing internal electrodes at specific interfaces between ceramic layers; where the Al/Cu ratio of the Al/Cu alloy is 80/20 or more.12-27-2012
20090026882OSCILLATOR BASED ON PIEZORESISTIVE RESONATORS - An oscillator circuit is described comprising a piezoresistive resonator and a phase changing devices. Oscillator circuits with piezoresistive resonators do have the advantage that they can perform self-sustaining oscillation without additional active devices as e.g. transistors since they can be used as amplifiers. Phase changing devices as capacitors, coils and further piezoresistive resonator are used in order to compensate the π/2 phase shift of the piezoresistive resonator.01-29-2009
20120280593Solder Material for Fastening an Outer Electrode on a Piezoelectric Component and Piezoelectric Component Comprising a Solder Material - A solder material can be used for fastening an outer electrode on a piezoelectric component. The solder material contains tin as the main constituent and at least one addition from the group of cobalt, tungsten, osmium, titanium, vanadium, iron and rare earth metals. A piezoelectric component includes such a solder material. The solder material is applied by means of a base metallization.11-08-2012
20130009515CONDUCTIVE PASTE COMPOSITION FOR INTERNAL ELECTRODES AND MULTILAYER CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There are provided a conductive paste composition for an internal electrode and a multilayer ceramic electronic component including the same. The conductive paste composition includes: 100 moles of a metal powder; 0.5 to 4.0 moles of a ceramic powder; and 0.03 to 0.1 mole of a silica (SiO01-10-2013
20130009516CONDUCTIVE PASTE COMPOSITION FOR INTERNAL ELECTRODES AND MULTILAYER CERAMIC ELECTRONIC COMPONENT INCLUDING THE SAME - There are provided a conductive paste composition for internal electrodes and a multilayer ceramic electronic component including the same. The conductive paste composition includes: a metal powder; and a refractory metal oxide powder having a smaller average grain diameter than the metal powder and a higher melting point than the metal powder. The conductive paste composition can raise the sintering shrinkage temperature of the internal electrodes and improve the connectivity of the internal electrodes.01-10-2013
20130020906ELECTROCHEMICAL ACTUATOR - The present invention provides systems, devices, and related methods, involving electrochemical actuation. In some cases, application of a voltage or current to a system or device of the invention may generate a volumetric or dimensional change, which may produce mechanical work. For example, at least a portion of the system may be constructed and arranged to be displaced from a first orientation to a second orientation. Systems such as these may be useful in various applications, including pumps (e.g., infusion pumps) and drug delivery devices, for example01-24-2013
20130020905MULTILAYER CERAMIC ELECTRONIC COMPONENT - In a multilayer ceramic electronic component, internal electrodes arranged inside a ceramic body include exposed ends that are connected to end surfaces of the ceramic body. External electrodes, which are arranged on the end surfaces so as to be electrically connected to the internal electrodes, include first conductive portions that are arranged on the end surfaces so as to cover the exposed ends but so as not to wrap around onto the side surfaces, and include second conductive portions that are arranged on the end surfaces so as to cover the first conductive portions and so as to wrap around onto the principal surfaces and the side surfaces. In each external electrode, protruding portions are arranged on the end surface adjacent to the first conductive portion to stabilize the posture of the ceramic body when the second conductive portions are being formed.01-24-2013
20080224566MULTILAYER CONDUCTIVE ELEMENTS - An article comprises first and second electrically responsive elements having a cutting plane which is perpendicular to an x-dimension for separating the elements. The conductive elements of the conductive layers are alternatingly exposed to one of the two opposing faces of the conductive element.09-18-2008
20110260577PIEZOELECTRIC RESONATOR DEVICE AND METHOD FOR MANUFACTURING PIEZOELECTRIC RESONATOR DEVICE - A piezoelectric resonator device is provided with a piezoelectric resonator plate, and first and second sealing members that hermetically seal driving electrodes formed on the piezoelectric resonator plate. The piezoelectric resonator plate and the first sealing member are bonded together with a bonding material, and the piezoelectric resonator plate and the second sealing member are bonded together with a bonding material. Also, a multiple-surface bonding portion and a spread preventing portion are provided in at least either of a bonding area between the piezoelectric resonator plate and the first sealing member and a bonding area between the piezoelectric resonator plate and the second sealing member, the multiple-surface bonding portion allowing a bonding material to be bonded to multiple surfaces of different surface orientations, and the spread preventing portion being located on an outer side of the multiple-surface bonding portion and preventing a bonding region bonded to the bonding material from being enlarged.10-27-2011
20130099627PIEZOELECTRIC DEVICE AND METHOD OF MANUFACTURING PIEZOELECTRIC DEVICE - A piezoelectric device includes: a substrate; a first electrode which is layered over the substrate; a first piezoelectric film which is layered over the first electrode; a metal oxide film which is layered over the first piezoelectric film; a metal film which is layered over the metal oxide film; a second piezoelectric film which is layered over the metal film; and a second electrode which is layered over the second piezoelectric film.04-25-2013
20130127293METHOD FOR PRODUCING PIEZOELECTRIC THIN-FILM ELEMENT, PIEZOELECTRIC THIN-FILM ELEMENT, AND MEMBER FOR PIEZOELECTRIC THIN-FILM ELEMENT - Provided is a method for producing a piezoelectric thin-film element including a piezoelectric thin-film layer having good surface morphology and high crystallinity. The method includes forming a lower electrode layer on a substrate; forming a piezoelectric thin-film buffer layer on the lower electrode layer at a relatively low film-formation temperature; forming a piezoelectric thin-film layer on the piezoelectric thin-film buffer layer at a film-formation temperature that is higher than the film-formation temperature for the piezoelectric thin-film buffer layer; and forming an upper electrode layer on the piezoelectric thin-film layer.05-23-2013
20110273056METHOD FOR MANUFACTURING CERAMIC ELECTRONIC COMPONENT AND CERAMIC ELECTRONIC COMPONENT - A method for manufacturing a ceramic electronic component capable of preventing degradation of the self alignment property and product characteristics due to absorption of flux into pores of a ceramic element assembly during soldering in mounting and a ceramic electronic component. In the method, a ceramic element assembly is subjected to an oil-repellent treatment by using an oil-repellent agent containing a polyfluoropolyether compound as a primary component and hydrofluoroether as a solvent, so as to avoid absorption of the flux by the ceramic element assembly.11-10-2011
20080197751Micro-Electro-Mechanical Transducers - A micro-electro-mechanical transducer (such as a cMUT) is disclosed. The transducer has a substrate, a top plate, and a middle spring layer therebetween. The substrate and the middle spring layer define cavities therebetween sidewalled by standing features. The middle spring layer is anchored by the standing features to create cantilevers over the cavities to enable a vertical displacement of connectors placed on the middle spring layer. The connectors define a transducing space between the middle spring layer and the top plate. The top plate is transported by the vertical displacement of the connectors in a piston-like motion to change the transducing space and to effectuate energy transformation. Various configurations of cantilevers, including single cantilevers, back-to-back double cantilevers and head-to-head double cantilevers (bridges) are possible.08-21-2008
20080197750Piezoelectric Thin Film Resonator - A method of producing a polycrystalline film of a metal compound, AlN or ZnO, on a substrate with a non-zero mean tilt of the c-axis relative to the surface normal of the substrate, is disclosed. The method comprises deposition of crystallites of said compound onto the substrate that has a suitable surface for crystal growth with tilted c-axis relative to the surface normal by operating a deposition system designed for sputtering of metal atoms from a target, in a gas mixture of inert gas and nitrogen or oxygen, respectively, at a process pressure such that the mean free path of sputtered metal atoms is comparable or larger than the target to substrate distance, the geometry of the deposition system being such that there exists at least one arbitrary area on the substrate where the distribution of the depositing flux is asymmetric relative to the surface normal at that area. A piezoelectric shear wave resonator comprising the polycrystalline film, especially for use in a liquid medium for mass loading and/or viscosity measurements and/or pressure measurements, and particularly for use as a biosensor or a pressure sensor, is also described08-21-2008
20120274178COMPOSITE PIEZOELECTRIC BODY, METHOD FOR PRODUCING SAID COMPOSITE PIEZOELECTRIC BODY, AND COMPOSITE PIEZOELECTRIC ELEMENT USING SAID COMPOSITE PIEZOELECTRIC BODY - [Object] There has been a need for a composite piezoelectric body and a composite piezoelectric element using the composite piezoelectric body which does not cause electrode defects, disconnection, and peeling even if the piezoelectric body is subjected to fine-pitch processing.11-01-2012
20110234046PIEZOELECTRIC CERAMIC COMPOSITION, PIEZOELECTRIC ELEMENT, AND RESONATOR - Provided is a piezoelectric ceramic composition which can increase Q09-29-2011
20110234045LAMINATED CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - In a method of forming a plating layer for an external terminal electrode by applying, for example, copper plating to an end surface of a component main body with respective ends of internal electrodes exposed, and then applying a heat treatment at a temperature of about 1000° C. or more in order to improve the adhesion strength and moisture resistance of the external terminal electrode, the plating layer may be partially melted to decrease the bonding strength of the plating layer. In the step of applying a heat treatment at a temperature of about 1000° C. or more to a component main body with plating layers formed thereon, the average rate of temperature increase from room temperature to the temperature of about 1000° C. or more is set to about 100° C./minute or more. This average rate of temperature increase maintains a moderate eutectic state in the plating layer and ensures a sufficient bonding strength of the plating layer.09-29-2011
20110234044PIEZOELECTRIC/ELECTROSTRICTIVE CERAMIC, MANUFACTURING METHOD FOR PIEZOELECTRIC/ELECTROSTRICTIVE CERAMIC, PIEZOELECTRIC/ ELECTROSTRICTIVE ELEMENT, AND MANUFACTURING METHOD FOR PIEZOELECTRIC/ELECTROSTRICTIVE ELEMENT - Provided is a piezoelectric/electrostrictive ceramic which produces large electric-field induced strain without performing an aging treatment for a long period of time. A piezoelectric/electrostrictive ceramic sintered body in which the ratio of the number of ions at A sites to the number of ions at B sites in a perovskite structure is at least 0.94 to at most 0.99 is subjected to an oxygen heat treatment at a temperature of 600 to 1050° C. for 2 to 100 hours under an atmosphere with an oxygen partial pressure of 0.05 to 1.0 atm.09-29-2011
20130181572ACTUATOR - Provided is an actuator simultaneously having better deformation response characteristics and larger generative force. The actuator includes a pair of opposing electrodes and an intermediate layer disposed therebetween. The intermediate layer contains at least an electrolyte and includes at least a polymer fiber layer. The polymer fiber layer includes a plurality of polymer fibers crossing each other and intertwined three-dimensionally. The polymer fiber layer has fused portions at intersections of the polymer fibers.07-18-2013
20090102315QUARTZ CRYSTAL DEVICE - A quartz crystal device includes: a container; a crystal blank hermetically encapsulated in the container; and at least two outside terminals provided on an outer bottom surface of the container and used to surface-mount the quartz crystal device on a wiring board. Each outside terminal has a two-layer structure with a first layer provided on the outer bottom surface and a second layer provided on the first layer and having a flat surface. The second layer has a smaller plane shape than the first layer and is formed on a central part of the first layer at a distance from the perimeter of the first layer.04-23-2009
20110309718CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - When an external terminal electrode of a ceramic electronic component such as a laminated ceramic capacitor is formed by plating, plating growth may be also caused even in an undesired location. The ceramic surface provided by a component main body is configured to include a high plating growth region of, for example, a barium titanate based ceramic, which exhibits relatively high plating growth, and a low plating growth region of, for example, a calcium zirconate based ceramic, which exhibits relatively low plating growth. The plating film constituting a first layer to define a base for an external terminal electrode is formed in such a way that the growth of a plated deposit deposited with conductive surfaces provided by exposed ends of internal electrodes as starting points is limited so as not to cross over a boundary between the high plating growth region and the low plating growth region toward the low plating growth region.12-22-2011
20080303376DEVICES AND METHODS FOR ENERGY CONVERSION BASEDON THE GIANT FLEXOELECTRIC EFFECT IN NON-CALAMITIC LIQUID CRYSTALS - Devices and methods for energy conversion based on the giant flexoelectric effect in non-calamitic liquid crystals. By preparing a substance comprising at least one type of non-calamitic liquid crystal molecules and stabilizing the substance to form a mechanically flexible material, flexible conductive electrodes may be applied to the material to create an electro-mechanical energy conversion device which relies on the giant flexoelectric effect to produce electrical and/or mechanical energy that is usable in such applications as, for example, power sources, energy dissipation, sensors/transducers, and actuators. The ability to directly and accurately measure the giant flexoelectric effect for different types of non-calamitic liquid crystal molecules is important for identifying molecules that may be effective for particular applications.12-11-2008
20120019100LAMINATED CERAMIC ELECTRONIC COMPONENT AND MANUFACTURING METHOD THEREFOR - In a method for manufacturing a laminated ceramic electronic component, when a plating film to define an external terminal electrode is formed by plating exposed ends of a plurality of internal electrodes at a WT surface of a component main body, ingress of a plating solution may be caused from a gap between an end edge of the plating film and the component main body to decrease the reliability of a laminated electronic component obtained. An internal dummy electrode is provided around a region where the exposed ends of the plurality of internal electrodes are distributed in the WT surface of the component main body. The internal dummy electrode includes two LW-direction sections extending parallel or substantially parallel to each other in a direction along the LW surface, and two LT-direction sections extending parallel or substantially parallel to each other in a direction along the LT surface. The plating film is formed at least over the exposed end of the internal dummy electrode. The internal dummy electrode is formed by wrapping an outer layer sheet with the internal dummy electrode formed around a laminate composed of ceramic layers and the internal electrodes.01-26-2012
20120019099CERAMIC ELECTRONIC COMPONENT - A ceramic electronic component includes a ceramic base, first and second internal electrodes, and first and second external electrodes. The first external electrode is disposed at a first end portion of a first major surface in the longitudinal direction. The second external electrode is disposed at a second end portion of the first major surface in the longitudinal direction. A portion of each of the first and second external electrodes is opposed in the thickness direction to a region where the first and second internal electrodes are opposed to each other in the thickness direction. A condition ( 1/10)t01-26-2012
20130200749CERAMIC ELECTRONIC COMPONENT - A ceramic electronic component includes a ceramic body; a plurality of internal electrodes provided in the ceramic body and including ends exposed on a surface of the ceramic body; a coating layer covering a surface portion of the ceramic body on which the internal electrodes are exposed, the coating layer being made of a glass or resin medium in which metal powder particles are dispersed; and an electrode terminal provided directly on the coating layer and including a plating film. The metal powder particles define conduction paths electrically connecting the internal electrodes with the electrode terminal and have an elongated shape in cross section along a thickness direction of the coating layer. The metal powder particles defining the conduction paths have a maximum diameter not smaller than the thickness of the coating layer.08-08-2013
20130200748PIEZOELECTRIC ACTUATOR INCLUDING Ti/TiOx ADHESIVE LAYER AND ITS MANUFACTURING METHOD - A piezoelectric actuator includes a substrate, an oxide layer formed on the substrate, a Ti008-08-2013
20130200750PREFERENTIALLY-ORIENTED OXIDE CERAMICS, PIEZOELECTRIC ELEMENT, LIQUID DISCHARGE HEAD, ULTRASONIC MOTOR, AND DUST REMOVING DEVICE - Provided is a manufacturing method for preferentially-oriented oxide ceramics having a high degree of crystal orientation. The manufacturing method includes: obtaining slurry containing an oxide crystal B having magnetic anisotropy; applying a magnetic field to the oxide crystal B, and obtaining a compact of the oxide crystal B; and subjecting the compact to oxidation treatment to obtain preferentially-oriented oxide ceramics including a compact of an oxide crystal C having a crystal system that is different from a crystal system of one of a part and a whole of the oxide crystal B. By (1) reacting raw materials, (2) reducing the oxide crystal A, or (3) keeping the oxide crystal A at high temperature and quenching the oxide crystal A, the oxide crystal B is obtained to be used in the slurry.08-08-2013
20130207512PIEZOELECTRIC DRIVE ELEMENT AND PIEZOELECTRIC DRIVE UNIT - A piezoelectrically actuated element includes a composite ceramic to which an alternating electric field is applied through external electrodes that are orthogonal to the polarization direction, wherein the composite ceramic is formed from a first piezoelectric ceramic having soft spring characteristics such that the elastic constant decreases with increasing vibration velocity, and a second piezoelectric ceramic having hard spring characteristics such that the elastic constant increases with increasing vibration velocity. Even when the applied electric field is intensified to increase the vibration velocity of the piezoelectrically actuated element, the overall change in the elastic constant is minimized, and fluctuations in the resonance frequency is suppressed.08-15-2013
20130207513ELECTROMECHANICAL EFFECT IN METAL OXIDES - This invention provides an electromechanical device comprising an active material comprising a metal oxide such as Ce0.8Gd0.2O1.9 wherein the elastic modulus of metal oxide can be modulated by applying external electric field. The Ce0.8Gd0.2O1.9 layer in a substrate \ electrode \Ce0.8Gd0.2O1.9 \ electrode structure or conductive substrate \Ce0.8Gd0.2O1.9 \ electrode structure develops a stress upon applying an electric field. This invention provides methods for tailoring the elastic modulus of materials using an electric field for the generation of an electromechanical response.08-15-2013

Patent applications in class Piezoelectric elements and devices

Patent applications in all subclasses Piezoelectric elements and devices