Entries |
Document | Title | Date |
20080218026 | Piezoelectric package with enlarged conductive layers - A piezoelectric package comprises a piezoelectric plate having a first planar surface and a second planar surface that are electrically isolated from each other. The piezoelectric package further comprises a first electrically conductive layer electrically coupled to the first planar surface, and a second electrically conductive layer electrically coupled to the second planar surface. The piezoelectric package further comprises a first electrically insulative material (e.g., a rigid fiber composite material) encapsulating the piezoelectric plate and at least portions of the first and second electrically conductive layers. | 09-11-2008 |
20080231142 | Piezoelectric Actuating Unit or Piezoelectric Drive Device - A piezoelectric actuating unit has a piezoelectric actuator pressed to a first cap which makes it possible to fix the actuating unit thereabove to the drive body of the piezoelectric drive device and cables and/or contact pins used in the form of contact elements with the actuator for the electrical operation thereof. In an advantageous manner, the first cap has at least one orifice for introducing the contact element. In particularly advantageous manner, the actuating units are used in the piezoelectric drive device with a drive body which has a cylindrical drive surface, at least two actuating units provided with the piezoelectric actuators which displace the drive body on a drive plane, a drive shaft which is placed on the drive body surface and is rotated by oscillation and the contact elements for connecting an actuator operating circuit to the actuators. | 09-25-2008 |
20080238245 | Piezoelectric switch with symbolic illumination - An element for an illuminated piezoelectric switch, comprises a substantially lens-like body having a first major surface and a second major surface, an illumination input at the first major surface, and a protrusion extending from the second major surface. The protrusion is integral to the construction of the lens. When the element is placed between a piezoelectric crystal and a pressing surface it transmits pressure to the crystal in one direction, and in the other direction it transmits light from a lighting element below, towards the protrusion. The protrusion is shaped so that the switch can be identified. | 10-02-2008 |
20080238246 | Electromechanical actuator - An actuator includes a frame and a shaft rotabably supported by the frame. The actuator also includes at least one wire made from a shape memory alloy having a first end thereof fixed with respect to the frame. A second end of the at least one wire is movable with respect to the frame and configured to rotate the shaft in a first direction with respect to the frame. | 10-02-2008 |
20080265713 | Device for Actuating a Sanitary Appliances - The invention relates to a device for actuating a sanitary appliances which comprises at least one sensor arranged in a housing and provided with a pressure-sensitive element and is actuatable by applying a force on the sensor sensitive area for deforming said element. The inventive device also comprises a control system which determines the deformation of the element and produces a signal by which the operation of the sanitary appliances is controllable. Coupling means extending perpendicularly to the operating direction of the sensor outside of the sensitive area thereof enable a force which is generated at a distance from said sensitive area to be transferable thereon. | 10-30-2008 |
20090009030 | MEMS PIEZOELECTRIC SWITCH - The present invention provides a MEMS piezoelectric switch that has an articulated unimorph bridge attached to a substrate. The bridge includes a passive layer of zirconia and at least one silicon-based material, an active layer of a piezoelectric material that has a high piezoelectric coefficient, at least one pair of interdigitated electrodes, disposed on the top surface of the active layer and across which the bias voltage is applied, and a top contact electrode. A bottom contact electrode is provided on the substrate, and signals flow through the switch when the top and bottom contact electrodes contact one another. | 01-08-2009 |
20090045695 | Piezoelectric Resonator - A capacitor-built-in type piezoelectric resonator which is thin and small in size, and has high reliability is formed by forming a pair of vibrating electrodes on both principal surfaces of a piezoelectric substrate, and joining a sealing substrate made of a ceramic material to form a capacitance via a frame onto one vibrating electrode, and joining a sealing substrate made of a resin material via a frame onto the other vibrating electrode. | 02-19-2009 |
20090085431 | PIEZOELECTRIC DEVICES AND METHODS FOR MANUFACTURING SAME - Devices are disclosed that include a piezoelectric vibrating piece; a glass base and lid form a package enclosing the piezoelectric vibrating piece. The piece has first and second electrodes. The base has first and second opposing surfaces. The base mounts the piezoelectric vibrating piece, and the lid seals the piezoelectric vibrating piece in the package. The base includes first and second metal wires, extending therethrough, whose ends are denuded to the first and second surfaces and connected to the first and second electrodes, respectively. In disclosed methods for making the packaged devices, such as piezoelectric oscillators, multiple packaged devices are made simultaneously by stacking and simultaneously bonding respective wafers on which glass bases, piezoelectric vibrating pieces, and lids have been formed. | 04-02-2009 |
20090152983 | Integrated acoustic bandgap devices for energy confinement and methods of fabricating same - The present invention is directed to monolithic integrated circuits incorporating an oscillator element that is particularly suited for use in timing applications. The oscillator element includes a resonator element having a piezoelectric material disposed between a pair of electrodes. The oscillator element also includes an acoustic confinement structure that may be disposed on either side of the resonator element. The acoustic confinement element includes alternating sets of low and high acoustic impedance materials. A temperature compensation layer may be disposed between the piezoelectric material and at least one of the electrodes. The oscillator element is monolithically integrated with an integrated circuit element through an interconnection. The oscillator element and the integrated circuit element may be fabricated sequentially or concurrently. | 06-18-2009 |
20090200895 | PIEZOELECTRIC ACTUATOR, COMPRISING ELECTRICALLY CONTACTED PIEZOELECTRIC ELEMENTS STACKED ON TOP OF EACH OTHER - A piezoelectric actuator is proposed, having a plurality of piezoelectric elements that are stacked on top of each other. Piezoelectric layers between each of which an inner electrode having a polarity alternating within the layer structure is provided. Outer electrodes are present at two opposing lateral surfaces, through which the inner electrodes are supplied with an electric charge. From each outer electrode at least one conductive fuse bar is directed to these inner electrodes, preferably in the inactive region, for contacting each of these inner electrodes that are associated with the polarity. The fuse bar forms an electric resistance cross-section to the respective inner electrode with the respective contact surface. In case of high current flow, the respective fuse bar blows, thus forming a fusible cut-out. | 08-13-2009 |
20090218911 | Device for the Active Damping of the Vibrations Experienced by a Fragile Part of Moving Equipment, with Autonomous Power Supply - A device is dedicated to the damping of vibrations for an item of equipment (I) designed to be moved and comprising a structure (S | 09-03-2009 |
20090236936 | PIEZOELECTRIC DEVICE AND METHOD FOR MANUFACTURING PIEZOELECTRIC DEVICE - A piezoelectric device includes: a container; a piezoelectric resonator element accommodated in the container; a circuit element accommodated in the container so as not to overlap with the piezoelectric resonator element in a plan view; and a mounting stage to which the piezoelectric resonator element is fixed. The mounting stage is fixed inside the container. | 09-24-2009 |
20100102671 | PIEZOELECTRIC DEVICE - A piezoelectric device, having a piezoelectric vibrating piece and a circuit element being electrically connected, is provided with a package for storing inside at least the piezoelectric vibrating piece of the piezoelectric device. The package is made up of a substrate and a cover body, and on the outer surface of the package, an electrode terminal electrically connected to at least the circuit element or the piezoelectric vibrating piece is provided. The electrode terminal includes an external connecting terminal which is electrically connected with an external circuit board and an input-output terminal which is electrically non-connected with the external circuit board, at the time of mounting the package on the external circuit board. The surface of the external connecting terminal and that of the input-output terminal are formed of materials different from each other so that adhesive characteristics to a mounting material such as a solder are varied. Thus, at the time of mounting the piezoelectric device on the external circuit board by using the mounting material such as the solder, short-circuit between the input-output terminal and the external connecting terminal is eliminated, and a highly reliable piezoelectric device is provided, having stable circuit operation without inducing characteristic deterioration. | 04-29-2010 |
20100320867 | Array type ultrasound probe, manufacturing method and driving method of array type ultrasound probe - A driving method of an array type ultrasound probe, in which transmission and reception are carried out by changing a voltage load alternatively on the transmission piezoelectric element and the reception piezoelectric element. | 12-23-2010 |
20110037345 | Vibration Device - The present utility model provides a vibration device, comprising: an case which is equipped with an light sensing lens, and oscillator, battery, photonic circuit, CPU, time quartz crystal and central processing circuit board mounted inside the cavity of the case, wherein the photonic circuit and CPU are configured on the central processing circuit board. The present utility model provides a vibration device which vibrates at given time together with one or several same type of products for reminding your lovers/friends something at given time. This device with small volume can be equipped on the device in the form of a watch, key ring or waistband, which makes it portable. | 02-17-2011 |
20110089785 | MICROMECHANICAL RESONATOR WITH ENLARGED PORTION - An apparatus with a micromechanical acoustic resonator formed on a substrate and enclosed in a cavity in the substrate. The resonator is partially suspended in the cavity. The resonator is shaped with a primary portion, and a first enlarged portion, where the primary portion is connected to the substrate, and the first enlarged portion is connected to one end of the primary portion. A capacitor connected in series to the resonator, and located external to the resonator cavity. The resonator is made of a compensating material and a piezoelectric material in between a first conductive film and a second conductive film. | 04-21-2011 |
20110121684 | Piezoelectric Actuator - A piezoelectric actuator comprises a stack of piezoelectric elements formed from piezoelectric material, a plurality of positive internal electrodes interdigitated with a plurality of negative internal electrodes to define active regions of the piezoelectric material which are responsive to a voltage being applied across the internal electrodes, in use. The active regions are responsive to voltage applied across the internal electrodes, in use. The piezoelectric actuator also comprises an external positive electrode for connection to the positive internal electrodes and an external negative electrode for connection to the negative internal electrodes. The stack includes an inactive stack region that defines a resistive element in the form of a coating of resistive material applied to an outer peripheral surface and/or an inner peripheral surface of the inactive stack region, wherein the resistive element is arranged to connect between the external positive electrode and the external negative electrode to allow charge to dissipate from the stack. | 05-26-2011 |
20110121685 | Piezoelectric Generator - A piezoelectric generator that includes a piezoelectric element having first and second surfaces on which a first electrode and a second electrode are disposed. A vibrating plate is bonded to the piezoelectric element such that the first surface is adjacent thereto. The vibrating plate includes a first bend disposed at a first side of a vibrating-plate main section to which the piezoelectric element is bonded and a second bend disposed at a second side thereof. A support member supports the vibrating plate at a location outside the first and second bends. A vibration body including the vibrating-plate main section and the piezoelectric element is supported at both ends. | 05-26-2011 |
20110169374 | Method for Tuning a Resonant Frequency of a Piezoelectric Component - A method for tuning a resonant frequency of a piezoelectric component is disclosed. The piezoelectric component includes a transducer extending in three spatial directions. The resonant frequency depends on an extension in at least one of the spatial directions and/or on a material-dependent elasticity modulus. The transducer includes a layered structure with at least two first electrodes and at least one second electrode, which is disposed between the two first electrodes. In the method, a DC voltage is applied to at least one of the at least two first electrodes and the at least one second electrode, so that a change of the resonant frequency results due to a change to the extension in the one spatial direction and the elasticity modulus. A control voltage with an excitation frequency is applied, the excitation frequency substantially corresponding to the modified resonant frequency. This generates a vibration of the piezoelectric component. | 07-14-2011 |
20110248603 | ULTRASOUND TRANSDUCER, ULTRASOUND PROBE, AND A METHOD FOR MANUFACTURING ULTRASOUND TRANSDUCERS - An ultrasound transducer according to an embodiment has two-dimensionally arranged ultrasound vibrators. A wiring board block is a laminate of wiring boards which are arranged along the row direction in the arrangement. The wiring board has a first surface facing a rear surface of the ultrasound vibrators and a second surface on its opposite side. First connection parts are provided on the first surface corresponding to the arrangement, and are conducted with back electrodes of the vibrators. Second connection parts are provided on the second surface, and are provided corresponding to the first connection parts. Connecting leads establish conductivity between the first and second connection parts through a fourth surface which is perpendicular to the second and third surfaces. Electronic circuits are connected to the second surface of the wiring board block, and are conducted with the second connection parts. | 10-13-2011 |
20110260578 | Electromechanical Materials and Devices Including the Same - An electromechanical article that includes a composite material ( | 10-27-2011 |
20120007468 | Dynamically Adjusting Piezoelectric Current Sensors - Provided are various embodiments of an adjustment circuit, having a base layer and a piezoelectric layer juxtaposed relative to the base layer and including a first electrode such that when the piezoelectric layer is stressed a polarization charge appears between the base layer and one side of the piezoelectric layer and an opposite polarization charge appears on an opposite side of the piezoelectric layer. | 01-12-2012 |
20120025667 | Method for manufacturing a piezoelectric film wafer, piezoelectric film element, and piezoelectric film device - A method for manufacturing a piezoelectric film wafer includes a first processing step for carrying out an ion etching on a KNN piezoelectric film formed on a substrate by using a gas containing Ar, and a second processing step for carrying out a reactive ion etching by using a mixed etching gas containing a fluorine-based reactive gas and Ar after the first processing step. | 02-02-2012 |
20120068574 | Control device for suppression of residual vibration of piezoelectric transducer - A control device for suppression of residual vibration of a piezoelectric transducer includes a capacitive energy storage component, and a switch unit. The control device is operable in a non-working mode, in which the switch unit provides voltage on the capacitive energy storage component to the piezoelectric transducer for reducing the residual vibration of the piezoelectric transducer. The capacitive energy storage component has a capacitance value that is sufficient for enabling the voltage on the capacitive energy storage component to substantially track voltage on the piezoelectric transducer under the non-working mode. | 03-22-2012 |
20120267981 | Modular Array and Circuits for Ultrasound Transducers - Modular electronics are provided for a multi-dimensional array. The electronics are positioned perpendicular to the array in modules. The modules include frames to support the electronics and provide for electrical connection between the array and the electronics. The frames include thermally conductive material to transfer heat away from the electronics and the array. The frames form a surface to support part of the array and a single layer of flexible circuit material with pads and traces over the surface for electrical connection. The flexible circuit material allows connection to the electronics at a pitch different than the pitch of the array. The modules allow the same electronics parts to be used with different sized arrays. The traces and pads of the flexible circuit material may be changed for different arrays without having to redesign the electronics and/or modules. | 10-25-2012 |
20120299440 | DEVICES COMPRISING NANOTUBES OR NANOWIRES HAVING ALTERABLE CHARACTERISTICS, AND RELATED METHODS - Devices usable as sensors, as transducers, or as both sensors and transducers include one or more nanotubes or nanowires. In some embodiments, the devices may each include a plurality of sensor/transducer devices carried by a common substrate. The sensor/transducer devices may be individually operable, and may exhibit a plurality of resonant frequencies to enhance the operable frequency bandwidth of the devices. Sensor/transducer devices include one or more elements configured to alter a resonant frequency of a nanotube. Such elements may be selectively and individually actuable. Methods for sensing mechanical displacements and vibrations include monitoring an electrical characteristic of a nanotube. Methods for generating mechanical displacements and vibrations include using an electrical signal to induce mechanical displacements or vibrations in one or more nanotubes. Methods for adjusting an electrical signal include passing an electrical signal through a nanotube and changing a resonant frequency of the nanotube. | 11-29-2012 |
20120326561 | LAMINATED CERAMIC ELECTRONIC COMPONENT - Provided is a laminated ceramic electronic component which has excellent mechanical characteristics, internal electrode corrosion resistance, high degree of ceramic material design freedom, low cost, low defective rate and various properties. It includes a laminate of a plurality of laminated ceramic layers and a plurality of internal electrodes at specific interfaces between ceramic layers. The internal electrodes contain an Al/Mg alloy in which the Al/Mg ratio is 65/35 or more. | 12-27-2012 |
20120326562 | LAMINATED 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 internal electrodes formed along at a plurality of specific interface between the ceramic layers and having an Al/Ti alloy as a component; and an external electrode formed on the outer surface of the laminate. The Al/Ti ratio of the Al/Ti alloy is 91/9 or more. | 12-27-2012 |
20130026883 | COMMONLY-POLED PIEZOELECTRIC DEVICE - A system for poling piezoelectric devices comprises a plurality of thin-film components, a plurality of piezoelectric devices, a poling pad for poling the piezoelectric devices, a plurality of traces, and a plurality of current-limiting elements. The thin-film components are separated by dice lanes to form an array, and the piezoelectric devices are formed on the thin-film components. The traces connect the piezoelectric devices across the dice lanes in parallel to the poling pad. Each current-limiting element is connected in series with one of the piezoelectric devices, in order to limit current to individual piezoelectric devices that experience current-related failure. | 01-31-2013 |
20130038171 | VIBRATING MEMBER, VIBRATING DEVICE, AND ELECTRONIC APPARATUS - A vibrating member includes a base portion, a plurality of vibrating arms which extend from one end portion of the base portion, are provided in parallel in a first direction, and extend in a second direction perpendicular to the first direction, a linking portion which is provided between the base end portions of two adjacent vibrating arms and extends from the other end portion of the base portion, and a support portion which is connected to the base portion through the linking portion. | 02-14-2013 |
20130113336 | Ultrasonic Array Transducer, Associated Circuit And Methods Of Making The Same - In some embodiments, circuits for ultrasonic transducer element arrays are provided. In some embodiments, a circuit described herein comprises a first layer for receiving a transducer element array, a ground layer comprising at least one ground disposed over the first layer and a plurality of first vias corresponding to transducer elements of the array, the first vias extending through the first layer to the at least one ground and comprising first ends for receiving ground electrodes of the transducer elements and second ends electrically connected to the ground. | 05-09-2013 |
20130140947 | PIEZOELECTRIC DEVICE - A piezoelectric device | 06-06-2013 |
20130140948 | RESONATOR - A resonator includes an interdigital transducer electrode, a resonance part, a supporting part, and two beam parts. The interdigital transducer electrode is disposed on a piezoelectric thin film. The resonance part is held on a substrate through an air gap. The supporting part supports the resonance part. The two beam parts connect the resonance part to the supporting part at both ends of the resonance part. The air gap forms a level difference at the supporting part or level differences at the respective two beam parts. | 06-06-2013 |
20130154439 | ENERGY HARVESTING DEVICES AND METHODS OF FABRICATING THE SAME - Energy harvesting devices are provided. The energy harvesting device includes a body, a proof mass spaced apart from the body, a cantilever extending from the body onto the proof mass, a first electrode layer on the cantilever opposite to the body, a first piezoelectric layer on the first electrode layer, a second electrode layer on the first piezoelectric layer, a second piezoelectric layer on the second electrode layer, a pair of third electrode layers on the second piezoelectric layer, and a magnetic layer between the second electrode layer and the second piezoelectric layer. Related methods are also provided. | 06-20-2013 |
20130169110 | ULTRASONIC TRANSDUCER STRUCTURE, ULTRASONIC TRANSDUCER, AND METHOD OF MANUFACTURING ULTRASONIC TRANSDUCER - An ultrasonic transducer structure, an ultrasonic transducer, and a method of manufacturing the ultrasonic transducer are provided. The ultrasonic transducer structure includes a driving wafer that includes a driving circuit; and an ultrasonic transducer wafer that is disposed on the driving wafer and includes a first wafer in which a via-hole is formed, a first insulating layer formed on the first wafer, a second wafer spaced apart from the first insulating layer, and a cavity formed between the first insulating layer and the second wafer. | 07-04-2013 |
20130175900 | MANUFACTURING METHOD OF POLARIZING POLYVINYLIDENE FLUORIDE PIEZOELECTRIC FILM WITHOUT METALIZED ELECTRODE AND SYSTEM HAVING THE SAME - A manufacturing method of polarizing polyvinylidene fluoride (PVDF) piezoelectric film without metalized electrode includes providing a polyvinylidene fluoride (PVDF) piezoelectric film that is stretched into B phase; providing two glass substrates having an indium tin oxide (ITO) layer respectively, wherein the PVDF piezoelectric film is located between the two glass substrates, and the two ITO layers are coated located separately on top of and below the PVDF piezoelectric film; and imposing a DC electric field onto two ITO layers, wherein the DC electric field of polarization is 400 to 900 kV/cm approximately. | 07-11-2013 |
20130181575 | Piezoelectric Based MEMS Structure - In one embodiment, a method of deforming a MEMS structure includes providing a base layer, providing a first piezoelectric slab operably connected to a surface of the base layer, determining a desired deformation of the base layer, applying a first potential to a first electrode operably connected to the first piezoelectric slab, applying a second potential to a second electrode operably connected to the first piezoelectric slab, and deforming the base layer with the first piezoelectric slab using the applied first potential and the applied second potential based upon the determined desired deformation. | 07-18-2013 |
20130214641 | ULTRASOUND TRANSDUCER AND METHOD FOR MANUFACTURING AN ULTRASOUND TRANSDUCER - An ultrasound transducer includes an array of acoustic elements, an integrated circuit, and an interposer. The interposer includes conductive elements that electrically connect the array of acoustic elements to the integrated circuit. An electrically conductive adhesive is engaged with the conductive elements of the interposer to electrically connect the interposer to at least one of the integrated circuit or the array of acoustic elements. The electrically conductive adhesive is anisotropically conductive. | 08-22-2013 |
20130293064 | PIEZOELECTRIC CIRCUIT, PIEZOELECTRIC DRIVING CIRCUIT FOR THE PIEZOELECTRIC CIRCUIT, AND PIEZOELECTRIC DRIVING METHOD - The present invention relates to a piezoelectric circuit, a piezoelectric driving circuit driving the piezoelectric circuit, and a method for driving the piezoelectric circuit. The piezoelectric circuit includes a sub-piezoelectric circuit and an external inductor coupled in parallel with the sub-piezoelectric circuit. The external inductor discharges the sub-piezoelectric circuit when a polarity of a piezoelectric voltage, that is, a both-end voltage of the piezoelectric circuit is inverted. The piezoelectric driving circuit includes first and third switches connected to a first node of the piezoelectric circuit and second and fourth switches connected to a second node of the piezoelectric circuit. | 11-07-2013 |
20130334927 | VIBRATIONAL WAVE DRIVING APPARATUS - A vibrational wave driving apparatus in the present invention includes an elastic member attached to an electromechanical energy transducing member, a pair of electrodes provided on the electromechanical energy transducing member, a wiring unit connecting the pair of electrodes and a voltage applying unit, and a driven body configured to be pressure contacted with the elastic member. The driven body is relatively driven by mechanical vibration of the elastic member generated when an alternating voltage is applied to the pair of electrodes. The wiring unit includes a pair of wiring portions connected to the pair of electrodes, respectively. The pair of wiring portions includes a pair of film-like bases and a pair of conductors formed on surfaces of the pair of film-like bases. The pair of wiring portions is arranged such that the pair of conductors overlaps each other through insulating layers. | 12-19-2013 |
20140070665 | PIEZO DRIVER HAVING PASSIVE ENERGY STORAGE COMPONENT RECHARGING CAPABILITY - A piezo driver is described that is configured to furnish electric charge to a piezo component during a first operational state and configured to transfer electric charge from the piezo component to a passive energy storage component during a second operational state. In one or more implementations, the piezo driver includes a passive energy storage component configured to store electric charge. The piezo driver also includes a voltage converter configured to electrically connect between a piezo component and the passive energy storage component. The voltage converter is configured to furnish electric charge from the passive energy storage component to the piezo component during a first state of operation and configured to furnish electric charge from the piezo component to the passive energy storage component during a second state of operation. | 03-13-2014 |
20140070666 | PIEZO DRIVER HAVING RECHARGING CAPABILITY - A piezo driver is described that is configured to furnish electric charge to a piezo component and configured to transfer electric charge from the piezo component to a passive energy storage component during various operational states of the piezo driver. In one or more implementations, the piezo driver includes a first passive energy storage component and a second passive energy storage component configured to store electric charge. The piezo driver also includes a voltage converter configured to electrically connect between a piezo component and the first passive energy storage component and the second passive energy storage component. The voltage converter is configured to furnish electric charge from the first passive energy storage component to the piezo component, and vice versa. The voltage converter is also configured to furnish electric charge from the second passive energy storage component to the piezo component, and vice versa. | 03-13-2014 |
20140117812 | MICROMACHINED ULTRASONIC TRANSDUCER ARRAYS WITH MULTIPLE HARMONIC MODES - Micromachined ultrasonic transducer (MUT) arrays capable of multiple resonant modes and techniques for operating them are described, for example to achieve both high frequency and low frequency operation in a same device. In embodiments, various sizes of piezoelectric membranes are fabricated for tuning resonance frequency across the membranes. The variously sized piezoelectric membranes are gradually transitioned across a length of the substrate to mitigate destructive interference between membranes oscillating in different modes and frequencies. | 05-01-2014 |
20140125198 | INTEGRATED PIEZOELECTRIC RESONATOR AND ADDITIONAL ACTIVE CIRCUIT - A semiconductor device comprises a semiconductor wafer; a piezoelectric resonator formed on the wafer, and an active circuit also formed on the wafer. The active circuit (e.g., a frequency divider) is electrically connected to the piezoelectric resonator. | 05-08-2014 |
20140232240 | ELECTROACTIVE POLYMER ENERGY CONVERTER - A balanced multi-phase energy conversion apparatus configured to convert energy from a mechanical energy source into electrical energy is disclosed. The energy conversion apparatus may comprise a plurality of transducers. Each of the plurality of transducers comprises a dielectric elastomer module comprising at least one dielectric elastomer film layer disposed between at least first and second electrodes. A transmission coupling mechanism is coupled to the mechanical energy source and operatively attached to the plurality of transducers. The transmission coupling cyclically strains and relaxes the plurality of transducers in response to the mechanical energy acting on the transmission coupling mechanism. The transmission coupling mechanism comprises a work cycle. The plurality of transducers are at evenly distributed points in the work cycle such that a total passive strain energy is constant. | 08-21-2014 |
20140265725 | Ultrasonic Driver - An ultrasonic transducer that can include a driver side and a bias voltage side. A higher voltage source can be electrically connected to the bias voltage side through a first resistor. A lower voltage source can be electrically connected to the driver side of through a second resistor. A field effect transistor or other suitable switch can be included, having a source, a gate and a drain. The source can be electrically connected to ground and the gate can be electrically connected to a control signal source. The drain can be electrically connected to the lower voltage source through a second resistor and be electrically connected to the driver side of the ultrasonic transducer. The gate can be electrically connected to a signal source through a third resistor. | 09-18-2014 |
20140265726 | SYMMETRIC DUAL PIEZOELECTRIC STACK MICROELECTROMECHANICAL PIEZOELECTRIC CANTILEVER ENERGY HARVESTER - The present invention relates to an energy harvester device comprising an elongate 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 is attached to the second end of the elongate resonator beam. The elongate resonator beam comprises either: (1) a first oxide layer on a first piezoelectric stack layer over a cantilever layer on a second oxide layer over a second piezoelectric stack layer on a third oxide layer or (2) a first oxide layer on a first piezoelectric stack layer over a second oxide layer on a cantilever layer over a third oxide layer on a second piezoelectric stack over a fourth oxide layer. Also disclosed is a system comprising an electrically powered apparatus and the energy harvester device, as well as methods of making and using the energy harvester. | 09-18-2014 |
20150123514 | ELECTRONIC DEVICE, CIRCUIT SUBSTRATE FOR ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - An electronic device includes a first conductive pattern and a second conductive pattern that are disposed on a main surface of an insulating substrate, a first electrode pattern that is electrically connected to the first conductive pattern, and a vibrator element that is disposed on the main surface, and the area of a first section in which the first conductive pattern overlaps the first electrode pattern is greater than the area in which the other conductive pattern overlaps the first electrode pattern in a plan view. | 05-07-2015 |
20150318464 | Method for Producing an Electronic Component - A method for producing an electronic component includes providing a piezoelectric main body, which is provided with electrodes. A first electric polarization field having a first polarity direction is applied to the piezoelectric main body between the two electrodes and then a second electric polarization field is applied in a second polarity direction, opposite to the first polarity direction, to the piezoelectric main body between the electrodes. The absolute value of the second electric polarization field differs from that of the first electric polarization field. | 11-05-2015 |
20150333250 | Structures with PZT Nanoparticle Ink Based Piezoelectric Sensor Assembly - A structure is provided having a substrate and a direct write deposited lead zirconate titanate (PZT) nanoparticle ink based piezoelectric sensor assembly deposited on the substrate. The PZT nanoparticle ink based piezoelectric sensor assembly has a PZT nanoparticle ink based piezoelectric sensor with a PZT nanoparticle ink deposited onto the substrate via an ink deposition direct write printing process. The PZT nanoparticle ink does not require a high temperature sintering/crystallization process once deposited. The PZT nanoparticle ink based piezoelectric sensor assembly further has a power and communication wire assembly coupled to the PZT nanoparticle ink based piezoelectric sensor. The power and communication wire assembly has a conductive ink deposited onto the substrate via the ink deposition direct write printing process. | 11-19-2015 |
20150333729 | PIEZOELECTRIC PACKAGE - Disclosed herein is a piezoelectric package including: a body having a piezoelectric component mounted therein and having a lower surface electrode provided on a bottom surface thereof, the lower surface electrode being electrically connected to the piezoelectric component; a groove part formed on the bottom surface of the body; and a capacitor component provided in the groove part and electrically connected to the piezoelectric component. | 11-19-2015 |
20160072409 | PRECISE-MOTION MOTOR - A motor includes a rotor module and a stator module. The rotor module includes electro-active polymer modules which change their physical size depending on electrical activation or deactivation. The stator module includes a base and a plurality of magnets mounted on two fixing plates of the base. The rotor module comprises a rotor and a coil. Precise displacement by the motor is obtained by electrically activating or deactivating the electro-active polymer modules. | 03-10-2016 |
20160173059 | Electrical Component Suitable For Miniaturization with Reduced Coupling | 06-16-2016 |
20180026175 | PIEZOELECTRIC DEVICE AND ELECTRONIC DEVICE | 01-25-2018 |