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Piezoelectric patents



      

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




Date/App# patent app List of recent Piezoelectric-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.

06/16/16
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
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.


06/09/16
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.


06/09/16
20160163960 

Crystal-oriented piezoelectric ceramic, piezoelectric element, and manufacturing crystal-oriented piezoelectric ceramic


A crystal-oriented piezoelectric ceramic including a major constituent represented by general formula (1-s)a1b1o3-sbamo3 (where a1 is at least one element selected from alkali metals, b1 is at least one of transition metal elements and includes nb, m is at least one of group iva elements and includes zr, and 0.05<s≦0.15), the major constituent having a relative density of not less than 95.0% and not more than 98.5%.. .
Hitachi Metals, Ltd.


06/09/16
20160163958 

Fingerprint sensor


A fingerprint sensor includes a substrate, a first electrode on the substrate, a piezoelectric layer on the first electrode, and a second electrode on the piezoelectric layer.. .
Lg Innotek Co., Ltd.


06/09/16
20160163957 

Surface acoustic wave device and manufacturing method therefor


In a surface acoustic wave device, a conductor pattern is located on a main surface of a piezoelectric substrate and includes a surface acoustic wave element pattern, a pad and a feed line that is electrically connected to the pad and extends up to an outer peripheral edge of the main surface. The piezoelectric substrate and a cover are bonded to each other with a support layer therebetween that includes a frame extending along the outer peripheral edge of the main surface so that a gap is provided between the frame and the outer peripheral edge and includes a pad adjacent portion on the pad.
Murata Manufacturing Co., Ltd.


06/09/16
20160163955 

Method for connecting piezoelectric element and cable substrate, piezoelectric element having cable substrate, and inkjet head including piezoelectric element with cable substrate


A connection method disclosed herein includes softening a resin film of a thermosetting resin by heating an element electrode of a piezoelectric body and a substrate electrode of a flexible cable to be connected to the piezoelectric body with the element electrode and the substrate electrode being pressed into contact with each other via the resin film; partially pushing out the molten resin film from an opposing position of the element electrode and the substrate electrode so as to bring a solder layer provided on the substrate electrode into contact with the element electrode; curing the resin film and melting solder in the solder layer by further raising a heating temperature; discharging excess solder in a direction defined by the cured resin film; and then solidifying the solder in the solder layer so as to solder the element electrode and the substrate electrode together.. .
Panasonic Intellectual Property Management Co., Ltd.


06/09/16
20160163954 

Acoustic resonator and manufacturing the same


An acoustic resonator and a method of manufacturing the same are provided. The acoustic resonator includes a resonance part including a first electrode, a second electrode, and a piezoelectric layer disposed between the first and second electrodes; and a substrate disposed below the resonance part.
Samsung Electro-mechanics Co., Ltd.


06/09/16
20160163953 

Piezoelectric actuator driving circuit, driving signal generating circuit, and device and driving piezoelectric actuator using the same


A piezoelectric actuator driving device may include: a control unit receiving waveform information including information on an output waveform to output digital values for generating the output waveform; a sampling clock generation unit using the output waveform to generate a variable sampling clock; and a digital-to-analog conversion unit outputting analog values corresponding to the digital values based on the variable sampling clock.. .
Samsung Electro-mechanics Co., Ltd.


06/09/16
20160161828 

Camera module


A camera module includes: a lens barrel including one or more lenses; a housing accommodating the lens barrel in an internal space thereof; and a piezoelectric actuator disposed on an inner surface of the housing and coupled to the inner surface of the housing through magnetic force, the piezoelectric actuator being configured to drive the lens barrel in an optical axis direction in the internal space.. .
Samsung Electro-mechanics Co., Ltd.


06/09/16
20160161013 

Improvements in hydraulic servovalves


A servovalve has a pilot stage having a piezoelectric element actuating a pilot stage spool valve, which pilot stage spool valve comprises an output control fluid line to a main stage.. .
Moog Controls Limited


06/09/16
20160160642 

Generating seismic pulses using piezoelectric devices to map fractures


The methods described are for determining distribution, orientation and dimensions of networks of hydraulically-induced fractures within a subterranean formation containing fluids. Detectable signals are generated by particles introduced into the fractures.
Halliburton Energy Services, Inc.


06/09/16
20160159102 

Liquid pump having a piezoelectric member and inkjet apparatus having the same


A liquid pump includes a piezoelectric pump unit and a control unit. The piezoelectric pump unit includes an inlet, an outlet, and a chamber formed between the inlet and the outlet, and a wall of the chamber includes a piezoelectric member.
Toshiba Tec Kabushiki Kaisha


06/09/16
20160159096 

Method for manufacturing ink jet head and ink jet head


The present invention provides a method for manufacturing an ink jet head and an ink jet head. The method includes: arranging a vibrating plate on lower surface of a substrate; arranging a piezoelectric actuator on surface of the vibrating plate; arranging a protective film on surface of the piezoelectric actuator for sealing the piezoelectric actuator along with the vibrating plate, thus preventing the piezoelectric actuator from corrosion; etching the substrate and the vibrating plate to form a groove on the substrate at a position corresponding to the piezoelectric actuator, and form a liquid feeding hole on the substrate and vibrating plate; forming a pressure chamber and a nozzle orifice on lower surface of the vibrating plate, allowing the pressure chamber to cover the position where the piezoelectric actuator is arranged in the vibrating plate, enabling communication of the pressure chamber with the nozzle orifice and the liquid feeding hole..
Zhuhai Seine Technology Co., Ltd.


06/09/16
20160159095 

Ink-jet head and printer


In accordance with an embodiment, an ink-jet head is provided which comprises a substrate; a piezoelectric body configured to have a plurality of parallel partition walls at the same pitch interval in the nozzle arrangement direction on the substrate and be plurally arranged in a direction orthogonal to the nozzle arrangement direction; a frame body configured to be arranged on the substrate at the outside of the piezoelectric body; and a nozzle plate configured to have a plurality of discharge openings which is formed by shifting by a half pitch in the nozzle arrangement direction in each row of pressure chambers formed with plural rows by the frame body and a plurality of the partition walls and is respectively formed in the orthogonal direction at a pitch identical to the pitch in each the pressure chamber.. .
Kabushiki Kaisha Toshiba


06/09/16
20160159089 

Liquid pump having a piezoelectric member and inkjet apparatus having the same


A liquid pump includes a piezoelectric pump unit and a control unit. The piezoelectric pump unit includes an inlet, an outlet, and a chamber formed between the inlet and the outlet, and a wall of the chamber includes a piezoelectric member.
Toshiba Tec Kabushiki Kaisha


06/09/16
20160159088 

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


There is provided a liquid discharging apparatus including: an original driving signal generation portion which generates an original driving signal based on a source signal; a driving signal generation portion which generates a driving signal based on the original driving signal; a reference voltage generation portion which generates a first reference voltage and a second reference voltage adjusted based on an adjustment signal, and supplies the voltage to the original driving signal generation portion; a piezoelectric element which is displaced as the driving signal is applied; a cavity; and a nozzle, and discharges the liquid inside the cavity as liquid droplets in accordance with the change in the internal volume of the cavity, in which adjustment resolution of the first reference voltage is lower than adjustment resolution of the second reference voltage.. .
Seiko Epson Corporation


06/09/16
20160157821 

Ultrasonic device, probe, electronic instrument, diagnostic device, and processing device


An ultrasonic device includes a plurality of piezoelectric elements, a driving electrode line connected to the piezoelectric elements, a first terminal, and a second terminal. The first terminal is connected to one end of the driving electrode line, and from the first terminal, a first driving signal for driving the piezoelectric elements, which is a voltage having an amplitude, is supplied to the piezoelectric elements.
Seiko Epson Corporation


06/09/16
20160157734 

Passive physiological monitoring (p2m) system


Passive physiological monitoring apparatus and method has a sensor for sensing physiological phenomenon. The sensor is a piezoelectric film of polyvinylidene fluoride.
Hoana Medical, Inc.


06/02/16
20160157370 

Electronic apparatus


An electronic apparatus is disclosed. In one embodiment, an electronic apparatus comprises a display, a cover member, a piezoelectric vibrating element, a controller, a housing, a bonding material, and an intervening member.
Kyocera Corporation


06/02/16
20160157021 

Electroacoustic transducer


An electroacoustic transducer has a housing, piezoelectric speaker, dynamic speaker, and support member. The piezoelectric speaker includes a vibration plate having a first surface and a second surface on the opposite side of the first surface, as well as a piezoelectric element joined to at least one of the first surface and second surface, and divides the interior of the housing into a first space facing the first surface and a second space facing the second surface.
Taiyo Yuden Co., Ltd.


06/02/16
20160157020 

Electroacoustic transducer


In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, support member 73, and elastically deformable adhesive layer 74. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11.
Taiyo Yuden Co., Ltd.


06/02/16
20160156334 

Elastic wave resonator, elastic wave filter apparatus, and duplexer


In an elastic wave resonator, a first idt electrode, a second idt electrode, a first reflector, and a second reflector are located on a piezoelectric substrate. The first idt electrode and the second idt electrode share a shared bus bar.
Murata Manufacturing Co., Ltd.


06/02/16
20160156333 

Printed circuit board and manufacturing the same


A printed circuit board includes: insulating layers and wiring layers arranged in stacked configuration; a cavity disposed in a first insulating layer among the insulating layers; a piezoelectric substrate disposed in the cavity; an electrode disposed on the piezoelectric substrate and configured to convert an electrical signal into an elastic wave or to convert an elastic wave into an electrical signal; and a sealing part disposed on the piezoelectric substrate, the sealing part enclosing the electrode and forming an air gap around the electrode.. .
Samsung Electro-mechanics Co., Ltd.


06/02/16
20160156332 

Piezoelectric resonator and manufacturing the same


A piezoelectric resonator that includes a single crystal si layer, a piezoelectric thin film formed from aluminum nitride and provided on the single crystal si layer, and first and second electrodes provided so as to sandwich the piezoelectric thin film. An element excluding nitrogen and aluminum is doped into the piezoelectric thin film formed from aluminum nitride, and a synthetic acoustic velocity of portions of the piezoelectric resonator other than the single crystal si layer substantially coincide with the acoustic velocity of the single crystal si layer..
Murata Manufacturing Co., Ltd.


06/02/16
20160156331 

Elastic wave device, electronic component, and manufacturing elastic wave device


An elastic wave device includes a piezoelectric substrate, an idt electrode, wiring, a pad, an under bump metal, a first dielectric layer, and a second dielectric layer. At least a portion of the idt electrode includes a first electrically conductive film, at least a portion of the wiring includes a multilayer body including the first electrically conductive film and a second electrically conductive film, and at least a portion of the pad includes the second electrically conductive film.
Murata Manufacturing Co., Ltd.


06/02/16
20160156287 

Half-tube array vibration energy harvesting method using piezoelectric materials


A piezoelectric transducer for harvesting ambient vibration energy is made up of a curved substructure beam, two half-tube piezoelectric elements and a mass block. One end of the beam is fixed on a vibration base and the other end is attached with the mass block.

06/02/16
20160156284 

Power generating device


A power generating device is disclosed that includes a power generating unit, an inductor, a switch connected to the inductor in series, and a control circuit. The power generating unit includes a piezoelectric element, and upper and lower electrodes disposed on surfaces of the piezoelectric element.
Murata Manufacturing Co., Ltd.


06/02/16
20160155930 

Nanogenerator and manufacturing the same


A nanogenerator with at least one nanostructure and method of manufacturing the same are provided. The method of manufacturing the nanogenerator includes forming at least one nanostructure including an organic piezoelectric material on a substrate..
Samsung Electronics Co., Ltd.


06/02/16
20160155929 

Multilayer piezoelectric ceramic electronic component and manufacturing multilayer piezoelectric ceramic electronic component


A multilayer sintered body having alternately stacked ni-based inner electrodes and piezoelectric ceramic layers. The piezoelectric ceramic layers contain a main ingredient of a perovskite compound containing nb, k, na, and li, at least one element m1 selected from nd and dy, and at least one element m2 selected from ga and al.
Murata Manufacturing Co., Ltd.


06/02/16
20160155928 

Device with deformable shell including an internal piezoelectric circuit


Each piezoelectric system (26, 28, 30) is totally arranged on and/or inside of the deformable shell (16).. .

06/02/16
20160155926 

Electroacoustic transducer


In an embodiment, an electroacoustic transducer has a piezoelectric speaker 20, housing, and support member 23. The piezoelectric speaker 20 has a vibration plate 11 with a periphery 111, and a piezoelectric element 12 joined to the vibration plate 11.
Taiyo Yuden Co., Ltd.


06/02/16
20160154514 

Pressure-detecting sensor


A pressure-detecting sensor that includes a piezoelectric sensor, a rectangular plate member, and an attaching member. The piezoelectric sensor is attached to the plate member via the attaching member so that the piezoelectric sensor is located in the vicinity of an end of the plate member in the longitudinal direction of the plate member, and such that the longitudinal direction of the piezoelectric sensor is parallel to the transverse direction of the plate member.
Murata Manufacturing Co., Ltd.


06/02/16
20160154126 

Combination motion and acoustic piezoelectric sensor apparatus and use therefor


Sensors used in mapping strata beneath a marine body are described, such as used in a flexible towed array. A first sensor is a motion sensor including a conductive liquid in a chamber between a rigid tube and a piezoelectric motion film circumferentially wrapped about the tube.
Solid Seismic, Llc


06/02/16
20160153860 

Piezoelectric sensor


A piezoelectric sensor including: a piezoelectric sheet; a first ground electrode integrally laminated on a first side of the piezoelectric sheet and having a first cutout section; a signal electrode integrally laminated on a second side of the piezoelectric sheet and having a third cutout section; and a second ground electrode integrally laminated on the signal electrode so as to be electrically insulated from the signal electrode and having a second cutout section. The cutout sections of the signal electrode, the first ground electrode, and the second ground electrode are at least partially overlapped with one another in a thickness direction of the piezoelectric sheet.
Sekisui Chemical Co., Ltd.


06/02/16
20160153845 

Pressing sensor and manufacturing pressing sensor


A pressing sensor that includes a piezoelectric polymer film having a top principal surface and a back principal surface opposed to each other, and whose piezoelectric polymer is oriented along the top principal surface and the back principal surface; a first detection electrode disposed opposite the top principal surface of the piezoelectric polymer film; and a second detection electrode disposed opposite the back principal surface of the piezoelectric polymer film and opposing the first detection electrode. A first shape of the piezoelectric polymer film as viewed from the top principal surface and a second shape of the piezoelectric polymer film as viewed from the back principal surface differ from each other..
Murata Manufacturing Co., Ltd.


06/02/16
20160153635 

Lighting system for a motor vehicle with light-beam scanning


The oscillating reflective body is moved by deformations of a piezoelectric operating member. The means for scanning the light beam also have optical means for amplifying the deflection of the path of the light beam positioned downstream of the reflective body, in relation to the propagation direction of the light beam..

06/02/16
20160152028 

Liquid ejection manufacturing liquid ejection apparatus


A liquid ejection apparatus and method of manufacture are disclosed. One apparatus includes a piezoelectric element corresponding to a pressure chamber in a channel substrate, a trace corresponding to the piezoelectric element.
Brother Kogyo Kabushiki Kaisha


06/02/16
20160151238 

System and treating skin and underlying tissues for improved health, function and/or appearance


System for administering treatment to a portion of a patient body, the system including a treatment device including an acoustic oscillator component and a vibrational component. The acoustic oscillator component including a piezoelectric transducer configured to deliver acoustic pulses to the portion of the patient body.
Sigma Instruments Holdings, Llc


05/26/16
20160150323 

Piezoelectric bone conduction receiver and portable electronic device


A piezoelectric bone conduction receiver and a portable electronic device are disclosed. The piezoelectric bone conduction receiver comprises: a piezoelectric bone conduction receiver driving unit functioning as an acoustic vibration element, a piezoelectric driving and signal processing circuit connected with the piezoelectric bone conduction receiver driving unit, and a driving signal switching module, wherein the piezoelectric bone conduction receiver driving unit comprises at least two piezoelectric bone conduction receiver driving modules which can be independently driven in operation, the at least two piezoelectric bone conduction receiver driving modules are connected to the driving signal switching module which is connected with the piezoelectric driving and signal processing circuit, and the driving signal switching module is configured to control phases of piezoelectric driving signals output by the piezoelectric driving and signal processing circuit to the piezoelectric bone conduction receiver driving modules, so that the phases of the piezoelectric driving signals received by the piezoelectric bone conduction receiver driving modules are same or opposite..
Kingtone Innovation (beijing) Technology Co., Ltd


05/26/16
20160149557 

Elastic wave device


In an elastic wave device, a plurality of elastic wave elements that include idt electrodes are provided on a piezoelectric substrate, and a support layer that surrounds the elastic wave elements is provided on the piezoelectric substrate to define hollow portions in which the elastic wave elements are located. A cover member is stacked on the support layer, so that the hollow portions, in which the elastic wave elements are located, are provided, and the support layer includes a first support layer and a second support layer.
Murata Manufacturing Co., Ltd.


05/26/16
20160149556 

Tunable filter


A tunable filter using love waves includes an inductance for band extension connected to each of piezoelectric resonators, variable capacitances are connected to the piezoelectric resonator, the piezoelectric resonators each include a linbo3 substrate and an idt electrode, and a pass band and an attenuation region are positioned in a frequency region on a lower frequency side relative to a value obtained by a calculation in which an acoustic velocity of a low-velocity transversal wave propagating in the linbo3 substrate is divided by a wave length defined by a period of the idt electrode.. .
Murata Manufacturing Co., Ltd.


05/26/16
20160149555 

Piezoelectric vibrating reed and piezoelectric vibrator


To provide a small-sized piezoelectric vibrating reed and a piezoelectric vibrator with excellent durability. The piezoelectric vibrating reed includes a piezoelectric plate having a rectangular shape, a vibrating portion formed on a principal surface of the piezoelectric plate and a pair of mount portions for mounting the piezoelectric plate.
Sii Crystal Technology Inc.


05/26/16
20160149554 

Elastic wave resonator, elastic wave filter device, and duplexer


An elastic wave includes a piezoelectric substrate having a polarization direction denoted by an arrow px, and first and second idt electrodes arranged on the substrate in an elastic wave propagation direction with a shared reflector therebetween. A first bus bar of the first idt electrode and a first end portion bus bar of a second reflector are connected to a wiring electrode to define a first terminal.
Murata Manufacturing Co., Ltd.


05/26/16
20160149119 

Piezoelectric ceramic composition, piezoelectric element, and the same


A piezoelectric ceramic composition comprises a basic composition of (1-x)pb(mg1/2w1/2)0.03(ni1/3nb2/3)0.09(zryti1-y)0.88o3+xbifeo3, wherein x=0 or 0.015 y=0.47-0.53, and at least one sintering aid of lico3, caco3, pbo, cuo and fe2o3, a piezoelectric element comprising the composition, and a method for preparing the same. The piezoelectric ceramic composition allows low temperature sintering and the piezoelectric ceramics prepared therefrom improves structural property, piezoelectric property and dielectric property..
Samsung Electro-mechanics Co., Ltd.


05/26/16
20160149117 

Ultrasonic sensor and manufacturing method thereof


An ultrasonic sensor includes a substrate. A first electrode and a first piezoelectric layer are stacked on one side of the substrate.
Miics & Partners Inc.


05/26/16
20160149116 

Ultrasonic sensor utilizing chemically strengthened glass as substrate


An ultrasonic sensor includes a first electrode, a first piezoelectric layer, a substrate, a second electrode, a second piezoelectric layer, and a third electrode. The first electrode and the first piezoelectric layer are stacked on a first surface of the substrate.
Miics & Partners Inc.


05/26/16
20160149115 

Vibrator equipped with piezoelectric element


A vibrator equipped with a piezoelectric element comprises: a case of which an upper or lower surface is coupled to an object to be vibrated; a vibrating part which is disposed in the case; a piezoelectric element which is coupled to the vibrating part so as to be deformed, thereby vibrating the vibrating part up and down; and a power supply part which supplies power to the piezoelectric element. The case comprises a base; and a support part which is protruded from both sides of the base and also coupled to both sides of the vibrating plate so as to elastically support the vibrating plate upward and downward, and a deformation quantity of the vibrating plate which is deformed to be bent by external impact is reduced while the support part is deformed together..
Hysonic. Co., Ltd.


05/26/16
20160149113 

Piezoelectric actuator and lens module including the same


A piezoelectric actuator includes a piezoelectric element, a first electrode disposed on a first surface of the piezoelectric element, and a second electrode disposed on a second surface of the piezoelectric element. One or more first grooves extending in a first direction of the piezoelectric element are formed in the first electrode..
Samsung Electro-mechanics Co., Ltd.


05/26/16
20160149112 

Methods and systems for applying charge to a piezoelectric element


Methods and systems for applying charge to a piezoelectric element include and/or facilitate implementation of processes including cyclical multi-stage processes for: providing a piezoelectric element with an accumulated charge; providing one or more charge holding elements with a scavenged charge from the piezoelectric element; substantially removing or discharging a remaining charge from the piezoelectric element; and applying the scavenged charge to the piezoelectric element with an opposite polarity in relation to the polarity of the remaining charge.. .
Alfred E. Mann Foundation For Scientific Research


05/26/16
20160149078 

Nitride semiconductor light-emitting device


An object is to improve a positive hole injection efficiency into an active layer in a nitride semiconductor light-emitting device. The nitride semiconductor light-emitting device is formed by stacking nitride semiconductor crystals each of which contains al and has a polar or semipolar surface either serving as a growth face.
Meijo University


05/26/16
20160148538 

Method and system to convert portable document format file to braille


The method and system to convert portable document format (pdf) file to braille includes an electrical interactive refreshable dynamic board connected to a processor that inputs scanned text and outputs embossed braille tactile indicia readable by anyone who can read braille via the sense of touch. piezoelectric actuators raise and lower braille pins according to the translated scanned text.
Sultan Qaboos University


05/26/16
20160148033 

Fingerprint identification unit and device


The present disclosure provides a fingerprint identification unit. The fingerprint identification unit includes a substrate, a reception layer, a first electrode layer, a transmission layer, a second electrode layer, and a third electrode layer.
Miics & Partners Inc.




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

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