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Piezo patents



      

This page is updated frequently with new Piezo-related patent applications.




Date/App# patent app List of recent Piezo-related patents
06/23/16
20160183017 
 Transducer devices and methods for hearing patent thumbnailTransducer devices and methods for hearing
A device to transmit an audio signal to a user may comprise a mass, a piezoelectric transducer, and a support to support the mass and the piezoelectric transducer with the eardrum. The piezoelectric transducer can be configured to drive the support and the eardrum with a first force and the mass with a second force opposite the first force.

06/23/16
20160183006 
 Piezoelectric speaker and electroacoustic transducer patent thumbnailPiezoelectric speaker and electroacoustic transducer
A piezoelectric speaker has a piezoelectric element and vibration plate. The piezoelectric element has a base body with a mounting surface, as well as first and second terminals that are formed on the mounting surface with a distance between them.

06/23/16
20160182036 
 Driving circuit for driving a capacitive load, and control  a driving circuit for driving a capacitive load patent thumbnailDriving circuit for driving a capacitive load, and control a driving circuit for driving a capacitive load
A liquid discharge apparatus includes: a piezoelectric element that is displaced according to a voltage of a drive signal; a cavity which is filled with a liquid and of which an inside volume is changed due to the displacement of the piezoelectric element; a nozzle that communicates with the cavity and is capable of discharging the liquid; a charge source that supplies a charge to the piezoelectric element; and a connection path selecting section that causes the piezoelectric element and the charge source to be electrically connected to each other by using a first signal path or a second signal path. The charge source includes: a first auxiliary power source that outputs two types or more of voltages; and a second auxiliary power source that outputs three types or more of voltages by using the two types or more of voltages output from the first auxiliary power source..

06/23/16
20160182011 
 Acoustic resonator having integrated lateral feature and temperature compensation feature patent thumbnailAcoustic resonator having integrated lateral feature and temperature compensation feature
A bulk acoustic wave (baw) resonator device includes a bottom electrode on a substrate over one of a cavity and an acoustic mirror, a piezoelectric layer on the bottom electrode, a top electrode on the piezoelectric layer, and a temperature compensation feature having positive temperature coefficient for offsetting at least a portion of a negative temperature coefficient of the piezoelectric layer. At least one of the bottom electrode and the top electrode includes an integrated lateral feature configured to create at least one of a cut-off frequency mismatch and an acoustic impedance mismatch..

06/23/16
20160182010 
 Acoustic wave device patent thumbnailAcoustic wave device
An acoustic wave device includes: a piezoelectric substrate; and an idt formed on the piezoelectric substrate, wherein an anisotropy coefficient is positive, an overlap region where electrode fingers of the idt overlap each other includes a center region and an edge region, the electrode fingers in the center and edge regions are continuously formed, the electrode finger in the edge region is inclined with respect to the electrode finger in the center region so that a pitch in a width direction of the electrode finger in the edge region is greater than a pitch in a width direction of the electrode finger in the center region, and an angle between the width direction in the center region and a crystal axis orientation of the piezoelectric substrate is less than an angle between the width direction in the edge region and the crystal axis orientation.. .

06/23/16
20160182009 
 Plate wave devices with wave confinement structures and fabrication methods patent thumbnailPlate wave devices with wave confinement structures and fabrication methods
A micro-electrical-mechanical system (mems) guided wave device includes a single crystal piezoelectric layer and at least one guided wave confinement structure configured to confine a laterally excited wave in the single crystal piezoelectric layer. A bonded interface is provided between the single crystal piezoelectric layer and at least one underlying layer.

06/23/16
20160182008 
 Multi-frequency guided wave devices and fabrication methods patent thumbnailMulti-frequency guided wave devices and fabrication methods
A micro-electrical-mechanical system (mems) guided wave device includes a piezoelectric layer including multiple thinned regions of different thicknesses each bounding in part a different recess, different groups of electrodes on or adjacent to different thinned regions and arranged for transduction of lateral acoustic waves of different wavelengths in the different thinned regions, and at least one bonded interface between the piezoelectric layer and a substrate. Optionally, a buffer layer may be intermediately bonded between the piezoelectric layer and the substrate.

06/23/16
20160182007 
 Plate wave devices with wave confinement structures and fabrication methods patent thumbnailPlate wave devices with wave confinement structures and fabrication methods
A micro-electrical-mechanical system (mems) guided wave device includes a single crystal piezoelectric layer and at least one guided wave confinement structure configured to confine a laterally excited wave in the single crystal piezoelectric layer. A bonded interface is provided between the single crystal piezoelectric layer and at least one underlying layer.

06/23/16
20160181952 
 Energy generating device, and  manufacturing the same patent thumbnailEnergy generating device, and manufacturing the same
An energy generating device and a method of manufacturing the same are provided. The energy generating device includes a first electrode, a metal layer, including a regular arrangement of a plurality of patterns, disposed on the first electrode, an organic material layer positioned on the metal layer, and a piezoelectric layer interposed between the first electrode and the organic material layer..

06/23/16
20160181506 
 Piezoelectric nanoparticle-polymer composite structure patent thumbnailPiezoelectric nanoparticle-polymer composite structure
Methods, systems, and devices are disclosed for implementing a stretchable nanoparticle-polymer composite foams that exhibit piezoelectric properties. In one aspect, a nanoparticle-polymer composite structure includes a curable liquid polymer; piezoelectric nanoparticles; and graphitic carbons..

06/23/16
20160181129 

Device for measuring the distribution or impulse of a series of droplets


A device for measuring the distribution and/or impulse of a series of droplets comprises a piezoelectric sensor positioned relative to a source of droplets such that each of a plurality of droplets contacts the piezoelectric sensor in succession, thereby to generate an electrical signal. Logic circuitry is configured to calculate one or more frequencies from the electrical signal..

06/23/16
20160179276 

Pressure-sensitive touch panel


An apparatus for combined capacitance and pressure sensing is described. The apparatus includes a multiplexer (75) having a plurality of inputs (76) and an output (f), a touch panel (29), and a front end module (3).

06/23/16
20160178618 

3d tissue model for spatially correlated analysis of biochemical, physiological and metabolic micro-environments


Disclosed is a perfusion device and methods of use including a generally cylindrical body and a packed bed of nanosensor-cell embedded matrix spheres (nanocems) disposed between layers of inert microspheres. A concentration of a molecule of interest can be established within the perfusion device to effect the cellular and chemical microenvironment of the nanocems, the nanocems in turn creating their own concentration gradients nutrients and waste products in response, which can be measured by nanosensors.

06/23/16
20160178462 

Piezoresistive material exhibiting an optimal gauge factor


The present invention relates to a multilayer composite material comprising: —a base layer—a metallic layer consisting of an insulating matrix phase and of a metallic particles phase, said metallic particles being distributed in the insulating matrix, wherein a volume fraction φ being the ratio between the volume of metallic particles and the volume of the metallic layer corresponds to a critical volume fraction φ*+δφ, with 0<δφ≦5%, the critical volume fraction φ* being the volume fraction for which an increase of conductivity of the metallic layer as a function of the volume fraction φ has a maximum value.. .

06/23/16
20160178461 

Touch pad using piezo effect


Disclosed is a touch pad using the piezo effect, including a touch pad equipped with touch keys; a piezo film that attaches to the bottom surface of the touch pad and radiates ultrasonic waves; and a control section that recognizes touches a user executes by analyzing the electric displacement of the piezo film and ultrasonic impedance reflected by the touch pad surface and a touch object that contacts to the surface.. .

06/23/16
20160175036 

Pressure sensing sealing plate


An end effector assembly for use with an electrosurgical instrument is provided. The end effector assembly has a pair of opposing jaw members.

06/16/16
20160174413 

Cooling for components of electronic devices


Apparatuses, methods and storage media associated with cooling one or more heat-generating components of an electronic device upon occurrence of a heat condition are disclosed herein. In embodiments, one or more piezo louvers, or some other cooling zone director, may be used to direct a fan from cooling a first one of the heat-generating components to cooling another one of the heat-generating components.
Intel Corporation


06/16/16
20160173991 

Electronic apparatus


An electronic apparatus comprises a housing exposed outside, a piezoelectric vibration element located inside the housing a vibration part having the piezoelectric vibration element in a main surface thereof to be vibrated by the piezoelectric vibration element to generate a sound, and a shock-absorbing part being in contact with the main surface and away from a peripheral edge of the main surface, the piezoelectric vibration element intervening between the shock-absorbing part and the peripheral edge.. .
Kyocera Corporation


06/16/16
20160173006 

Piezoelectric energy harvesting array and manufacturing the same


The inventive concept discloses a piezoelectric energy harvesting array and a method of manufacturing the same. The manufacturing method may include forming a plurality of piezoelectric energy harvesting devices; connecting masses to one side of the piezoelectric energy harvesting devices and connecting the other side of the piezoelectric energy harvesting devices facing the masses to a base; and individually tuning a resonant frequency of each of the piezoelectric energy harvesting devices to prevent mismatch of resonant frequency when the masses vibrate..
Electronics And Telecommunications Research Institute


06/16/16
20160172578 

Method for producing a flexible piezoelectric sensor


A method for producing a piezoelectric sensor, includes the following steps: producing, on a rigid support (10), a stack of sensor layers (2, 4, 5, 12), the sensor layers including a layer of piezoelectric material (5) included between a first electrode (6, 7) and a second electrode (8, 9), the first electrode not being in contact with the second electrode, then, while the sensor layers (2, 4, 5, 12) are still held by the rigid support (10), covering the sensor layers with a polymer layer (11), then removing the stack of sensor layers from the rigid support (10), such that the sensor layers covered by the polymer layer (11) are no longer carried by the rigid support (10).. .
Bodycap


06/16/16
20160172577 

Method for fabricating piezoelectric transducer


A method for fabricating a piezoelectric transducer is provided. The method includes providing a substrate on which a plurality of patterned electrodes are formed; providing a piezoelectric suspension, having a plurality of piezoelectric particles, on the substrate and the plurality of patterned electrodes; applying a voltage between the plurality of patterned electrodes to produce an electric field; and depositing the plurality of piezoelectric particles of the piezoelectric suspension on at least one of the plurality of patterned electrodes by the electric field to form a patterned piezoelectric membrane, and polarizing the piezoelectric membrane by the electric field..
National Tsing Hua University


06/16/16
20160172576 

Twin engineering to improve the switchability and rotatability of polarizations and domains in ferroelectric and piezoelectric materials


A method and device for forming deformation crystal twins in piezoelectric materials that includes deforming and heating the piezoelectric material in an oxidative atmosphere to a predetermined temperature for a predetermined time. The crystalline piezoelectric material is then allowed to cool to room temperature and the deformation is removed..
The Hong Kong University Of Science And Technology


06/16/16
20160172575 

Conductive paste for internal electrode, piezoelectric element, and piezoelectric vibration module including the same


A conductive paste for an internal electrode includes a conductive material; and a common material comprising a dielectric substance and a eutectic mixture, wherein the eutectic mixture comprises lead oxide (pbo) and copper oxide (cuo) and has a eutectic temperature that is higher than a sintering temperature of the conductive material.. .
Samsung Electro-mechanics Co., Ltd.


06/16/16
20160172574 

Piezoelectric thin film device and manufacturing the same


A piezoelectric device that includes a piezoelectric film, which is formed by a sputtering method and which has a columnar structure, and electrodes disposed in contact with the piezoelectric film. The piezoelectric film has a composition containing an element which can substitute nb and has an oxidation number of 2 or more and less than 5 when oxidized in a proportion of 3.3 mol or less relative to 100 mol of potassium sodium niobate represented by a general formula (k1-xnax)nbo3, where 0<x<1..
Murata Manufacturing Co., Ltd.


06/16/16
20160172573 

Laterally coupled multi-mode monolithic filter


A laterally coupled multi-mode monolithic filter includes: a substrate; a piezoelectric film formed on the substrate; a ground electrode formed on a first surface of the piezoelectric film; and signal electrodes formed on a second surface of the piezoelectric film and arranged in parallel to each other, the second surface being opposite to the first surface, each of the signal electrodes including a first electrode finger and a second electrode finger, wherein the first electrode finger and the second electrode finger have different electric potentials; adjacent signal electrodes of the signal electrodes are at a distance from each other, the distance being greater than a pitch of the first electrode finger and the second electrode finger.. .
Taiyo Yuden Co., Ltd.


06/16/16
20160171995 

Piezoelectric disk drive suspension motors having plated stiffeners


Various embodiments concern a gimbaled flexure having a dual stage actuation structure. The flexure comprises a gimbal on which a motor is mounted.
Hutchinson Technology Incorporated


06/16/16
20160171270 

Acoustic wave fingerprint recognition unit and manufacturing thereof


The present disclosure provides an acoustic wave fingerprint recognition unit including a sensor circuit substrate, a film adhesive layer positioned on the sensor circuit substrate, a piezoelectric material layer positioned on the film adhesive layer and a protection layer positioned on the piezoelectric material layer. The film adhesive layer is formed of a film adhesive material, and the film adhesive material is composed of a film adhesive agent and an organic solvent.
General Interface Solution Limited


06/16/16
20160170539 

Vibrating device and electronic device using same


In an embodiment, a surface of a smartphone 10 is covered with a transparent protective panel 22 supported by rims 16 of a housing 12, and a display device 18 and touch panel 20 are placed in a storage part 14 of the housing 12. The protective panel 22 is constituted by joining a glass plate 22a and resin plate 22b together, and concave parts 30a, 30b are provided on the joining surface side of the resin plate 22b, with piezoelectric vibrating elements 40 placed therein and joined to the glass plate 22a, wherein vibration is transmitted to the surface of the protective panel 22 as surface acoustic waves, demonstrating a haptic function, and also, audible vibration is generated because the modulus of elasticity of the resin plate 22b is lower than that of the glass plate 22a, achieving an operation as a speaker (or receiver)..
Taiyo Yuden Co., Ltd.


06/16/16
20160170376 

External element with a pressure sensor


The present invention concerns an external timepiece element including a frame made of a first material, said external element further including at least one pressure or altitude sensor, characterized in that said pressure or altitude sensor is formed of at least one disc or plate, said disc or plate being formed of or coated with a binder and a piezochromic pigment, said piezochromic pigment being selected to react at a specific pressure, so that said pigment changes from a first colour to a second colour when said specific pressure is reached.. .
The Swatch Group Research And Development Ltd


06/16/16
20160169822 

Nanotipped device and method


A dispensing device has a cantilever comprising a plurality of thin films arranged relative to one another to define a microchannel in the cantilever and to define at least portions of a dispensing microtip proximate an end of the cantilever and communicated to the microchannel to receive material therefrom. The microchannel is communicated to a reservoir that supplies material to the microchannel.
Northwestern University


06/16/16
20160169753 

Press detecting sensor


A press detecting sensor that includes an operation receiving member and a piezoelectric sensor. The operation receiving member is a multilayer rigid plate including a cover glass, a touch sensor and a display panel fixed via first bonding agents.
Murata Manufacturing Co., Ltd.


06/16/16
20160169180 

Integrated fuel injector ignitor having a preloaded piezoelectric actuator


A fluid injection system and associated systems and methods are described herein. A fluid injection system configured in accordance with an embodiment of the present technology can include, for example, a housing with a fluid inlet port and a fluid outlet port, a fluid metering valve, a valve seat having a valve seat component, and a valve actuator to axially move the metering valve from a seat in the valve seat component from a closed to an open position.
Mcalister Technologies, Llc


06/16/16
20160167391 

Ink level sensor formed with an array of self-sensing piezoelectric transducers


A fluid level sensor is configured for identifying a fluid level in a small volume reservoir, such as a fluid reservoir in an ejector head. The reservoir includes a plurality of vertically arranged chambers.
Xerox Corporation


06/16/16
20160167383 

Electromechanical transducer element, liquid droplet discharge head, and image forming apparatus


An electromechanical transducer element includes a lower electrode, an electromechanical transducer film of a piezoelectric material, and an upper electrode which are laminated. A diffraction intensity peak profile of the film obtained by measurement in which a tilt angle is changed in a position where diffraction intensity of a peak profile corresponding to a {200} plane among peak profiles of the film obtained by measurement according to an x-ray diffraction θ-2θ method is the maximum can be separated into three peak profiles.
Ricoh Company, Ltd.


06/16/16
20160167374 

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving


There is provided a liquid discharging apparatus including: an integrated circuit device; a feedback circuit; a transistor which generates an amplification modulation signal amplified from a modulation signal pulse-modulated from a source signal, based on an amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the integrated circuit device includes a modulation portion which generates the modulation signal; a gate driver which generates the amplification control signal based on the modulation signal; and a feedback terminal which is electrically connected to the modulation portion and the feedback circuit, in which the feedback circuit generates a feedback signal based on the driving signal and sends back the feedback signal to the modulation portion.. .
Seiko Epson Corporation


06/16/16
20160167372 

Liquid discharging apparatus, head unit, integrated circuit device for capacitive load driving, and capacitive load driving circuit


There is provided a liquid discharging apparatus including: a low voltage system circuit block including a modulation portion which generates a modulation signal pulse-modulated from a source signal; a transistor which generates an amplification modulation signal amplified from the modulation signal; a first high voltage system circuit block which receives the signal from the low voltage system circuit block and performs a switching operation; a second high voltage system circuit block which does not perform the switching operation; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the second high voltage system circuit block is disposed between the low voltage system circuit block and the first high voltage system circuit block.. .
Seiko Epson Corporation


06/16/16
20160167371 

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving


There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a boosting circuit which boosts and supplies a voltage to the gate driver; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the gate driver and the boosting circuit are electrically connected to a common ground terminal, and in which a wiring impedance between the ground terminal and the gate driver is smaller than a wiring impedance between the ground terminal and the boosting circuit.. .
Seiko Epson Corporation


06/16/16
20160167370 

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device


There is provided a liquid discharging apparatus including: an integrated circuit device; a transistor which generates an amplification modulation signal amplified from a modulation signal pulse-modulated from a source signal based on an amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the integrated circuit device includes a modulation portion which generates the modulation signal; a gate driver which generates the amplification control signal based on the modulation signal; and a charge pump circuit which supplies power to the gate driver, and is included in a package which has a first side and a second side that are adjacent to each other in a plan view, in which the package includes a plurality of package terminals, which are electrically connected to the charge pump circuit.. .
Seiko Epson Corporation


06/16/16
20160167369 

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving


There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a ground terminal which electrically connects the modulation portion to a ground potential; a transistor which generates an amplification modulation signal amplified from the modulation signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a feedback circuit which generates a feedback signal based on the driving signal, and sends back the feedback signal to the modulation portion via a feedback terminal; and a piezoelectric element which is displaced as the driving signal is applied, in which the modulation portion, the ground terminal, and the feedback terminal are formed on the same semiconductor substrate, and in which, in a plan view, the ground terminal and the feedback terminal are disposed being adjacent to each other.. .
Seiko Epson Corporation


06/16/16
20160167368 

Liquid discharging apparatus, head unit, integrated circuit device for capacitive load driving, and capacitive load driving circuit


There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a piezoelectric element which is displaced as the driving signal is applied; a first power source portion which applies a constant voltage signal to a terminal which is different from a terminal to which the driving signal of the piezoelectric element is applied; and a temperature detection portion which detects temperature, in which the first power source portion is disposed on the shortest straight path between the temperature detection portion and the gate driver.. .
Seiko Epson Corporation


06/16/16
20160167367 

Liquid discharging apparatus, head unit, integrated circuit device for capacitive load driving, capacitive load driving circuit, and control liquid discharging apparatus


There is provided a liquid discharging apparatus including: a modulation portion which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; a feedback circuit which sends back the driving signal to the modulation portion; a boosting circuit which supplies a voltage which has been boosted based on any one of a first clock signal and a second clock signal to the gate driver; a boosting control portion which controls boosting in the boosting circuit; and a piezoelectric element which is displaced as the driving signal is applied.. .
Seiko Epson Corporation


06/16/16
20160167366 

Liquid discharging apparatus, head unit, capacitive load driving circuit, and integrated circuit device for capacitive load driving


There is provided a liquid discharging apparatus including: a low voltage system circuit block including a modulation portion which generates a modulation signal pulse-modulated from a source signal; a high voltage system circuit block including a gate driver which generates an amplification control signal based on the modulation signal; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the low voltage system circuit block and the high voltage system circuit block are formed on the same semiconductor substrate, in which the semiconductor substrate has one substrate potential supply terminal to which a substrate potential of the semiconductor substrate is supplied.. .
Seiko Epson Corporation


06/16/16
20160167090 

Transducer with mesa


An ultrasonic transducer having a container, a base an actuator and a membrane system. The membrane system can include a membrane, a mesa and a standoff.
Ubeam Inc.


06/16/16
20160167078 

Aerosol generator


An aerosol generator (100) has a vibratable plate (1) with apertures therein and an annular piezo (2) which causes movement of the vibratable plate (1). An annular support member (3) supports the piezo (2) and the vibratable plate (1).
Stamford Devices Limited


06/09/16
20160164616 

Circuits, systems and methods of hybrid electromagnetic and piezoelectric communicators


Circuits, systems and methods that utilize two transducers, of which at least one is a piezoelectric transducer, adapted and coupled to receive and/or generate signals in the forms of sound waves, mechanical vibrations, and/or electromagnetic energy. In one version, two transducers each receive and/or generate separate vibrational energy signals that bear information.

06/09/16
20160164490 

Piezoelectric device and fabricating the same


The disclosure provides a piezoelectric device includes a piezoelectric vibrating piece and a coating layer. The piezoelectric vibrating piece includes an electrode and an exposed portion.
Nihon Dempa Kogyo Co., Ltd.


06/09/16
20160164489 

Bulk acoustic wave resonator and filter


A bulk acoustic wave resonator and a filter in which partial thicknesses of protection layers or reflection layers thereof are differently formed are provided. The bulk acoustic wave resonator includes a bulk acoustic wave resonating part comprising a piezoelectric layer, and a reflection layer configured to reflect waves of a resonance frequency generated by the piezoelectric layer based on a signal applied to the bulk acoustic wave resonating part.
Samsung Electro-mechanics Co., Ltd.


06/09/16
20160164488 

Bulk acoustic wave resonator


A bulk acoustic wave resonator may include: a piezoelectric layer including a piezoelectric material; a first electrode disposed on one surface of the piezoelectric layer; a second electrode disposed on the another surface of the piezoelectric layer; and a frame disposed on the one surface of the piezoelectric layer and surrounding the first electrode, wherein the frame is spaced apart from the first electrode by a predetermined gap.. .
Samsung Electro-mechanics Co., Ltd.


06/09/16
20160164478 

Semiconductor device, manufacturing the same, and mobile phone


A technique capable of maintaining the filter characteristics of a transmitting filter and a receiving filter by reducing the influences of heat from the power amplifier given to the transmitting filter and the receiving filter as small as possible in the case where the transmitting filter and the receiving filter are formed on the same semiconductor substrate together with the power amplifier in a mobile communication equipment typified by a mobile phone is provided. A high heat conductivity film hcf is provided on a passivation film pas over the entire area of a semiconductor substrate 1s including an area ar1 on which an ldmosfet is formed and an area ar2 on which a thin-film piezoelectric bulk wave resonator baw is formed.
Renesas Electronics Corporation


06/09/16
20160164462 

Semiconductor apparatus, oscillation circuit, and signal processing system


A semiconductor apparatus includes: first and second external terminals that are connected to respective both ends of an piezoelectric vibrator, in which the piezoelectric vibrator is externally disposed; an inverting amplifier that is disposed between the first and second external terminals; a feedback resistance that feeds back an output of the inverting amplifier to an input of the inverting amplifier; a first capacitative element that is disposed between the first external terminal and a reference voltage terminal; a first resistive element that is disposed in series with the first capacitative element; a second capacitative element that is disposed between the second external terminal and the reference voltage terminal; and a second resistive element that is disposed in series with the second capacitative element.. .
Renesas Electronics Corporation


06/09/16
20160164437 

Piezoelectric power generation system


A piezoelectric power generation device includes a stator, a rotor, and one or more piezoelectric power generation elements. The stator comprises an internal surface which defines an internal orifice.
Chevron U.s.a. Inc.


06/09/16
20160164436 

Driving apparatus and lens driving apparatus having the same


A driving apparatus has a vibration plate, a vibrator having a piezoelectric element that excites vibration of the vibration plate, and first and second contact parts, and a friction member being in contact with the contact parts. The vibrator and the friction member relatively move with respect to each other, and the contact parts are provided at positions with and interpose an odd number of antinodal lines of vibration generated in a first direction of the vibrator along with excitation, and provided at positions with and interpose an odd number of nodal lines of vibration generated in a second direction of the vibrator along with excitation..
Canon Kabushiki Kaisha


06/09/16
20160164434 

Triboelectric energy generator using control of dipole polarization direction and fabricating thereof


Provided are a triboelectric energy generator using a control of a dipole polarization direction and a method of fabricating the same. The present invention controls a direction of a charging property generated by friction through a control of a dipole polarization using a ferroelectric or piezoelectric property of a material, and by using this control, the present invention is related to a triboelectric energy generator in a disk type in which a frictional charging material is slidable on a thin film only using control of a dipole polarization without need of an additional patterning process and output power is improved..
Research & Business Foundation Sungkyunkwan University


06/09/16
20160164433 

Piezoelectric element including mesoporous piezoelectric thin film


A piezoelectric element includes: an upper electrode having acoustic transparency; a lower electrode; and a diaphragm disposed between the upper electrode and the lower electrode and configured of a mesoporous piezoelectric thin film. The upper electrode, the lower electrode, and the diaphragm are electrically insulated from one another..
Samsung Display Co., Ltd.




Piezo topics: Piezoelectric, Transducer, Ultrasonic, Electric Actuator, Electronic Device, Electronic Apparatus, Damping Force, Radial Flow, Semiconductor Material, Semiconductor, Sound Transducer, Ultrasound, Synchronous, Asynchronous, Liquid Adhesive

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