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This page is updated frequently with new Piezo-related patent applications. Subscribe to the Piezo RSS feed to automatically get the update: related Piezo RSS feeds. RSS updates for this page: Piezo RSS RSS


Piezoelectric device and method for manufacturing piezoelectric device

Poling method, poling device for piezoelectric element and inkjet print head

Microfluidic jetting device with piezoelectric actuator and method for making the same

Date/App# patent app List of recent Piezo-related patents
08/14/14
20140228713
 Systems and methods for assessing tissue contact patent thumbnailSystems and methods for assessing tissue contact
Systems and methods are disclosed for assessing tissue contact, e.g., for mapping, tissue ablation, or other procedures. An exemplary tissue contact sensing system comprises a flexible tip device.
08/14/14
20140227434
 Piezoelectric device and method for manufacturing piezoelectric device patent thumbnailPiezoelectric device and method for manufacturing piezoelectric device
In a method for manufacturing a piezoelectric device, a silicon oxide film is deposited by sputtering on a surface of a single-crystal piezoelectric substrate closer to an ion-implanted region, and a silicon nitride film is deposited by sputtering on a surface of the dielectric film opposite to a side thereof closer to the single-crystal piezoelectric substrate. The silicon oxide film has a composition that is deficient in oxygen relative to the stoichiometric composition.
08/14/14
20140225962
 Poling method, poling device for piezoelectric element and inkjet print head patent thumbnailPoling method, poling device for piezoelectric element and inkjet print head
There is provided a poling method for a piezoelectric element, including performing preliminary poling of the piezoelectric element twice or more with different voltages and measuring conductance of the piezoelectric element with regard to respective voltage, establishing a relational expression between the voltage and the conductance of the piezoelectric element, calculating targeted conductance required to exhibit a targeted piezoelectric characteristic of the piezoelectric element, and selecting a targeted voltage level corresponding to the targeted conductance and performing final poling of the piezoelectric element at the targeted voltage level.. .
08/14/14
20140225950
 Microfluidic jetting device with piezoelectric actuator and method for making the same patent thumbnailMicrofluidic jetting device with piezoelectric actuator and method for making the same
Disclosed herein is a microfluidic jetting device having a piezoelectric member positioned above a displaceable membrane. A voltage is applied across the piezoelectric member causing deformation of the piezoelectric member.
08/14/14
20140225684
 Surface acoustic wave device patent thumbnailSurface acoustic wave device
In a surface acoustic wave device, a plurality of surface acoustic wave elements include piezoelectric bodies having the same cut-angle. A propagation azimuth of a surface acoustic wave in at least one of surface acoustic wave elements is different from a propagation azimuth of a surface acoustic wave in at least another one of the surface acoustic wave elements.
08/14/14
20140225683
 Acoustic resonator comprising integrated structures for improved performance patent thumbnailAcoustic resonator comprising integrated structures for improved performance
An acoustic resonator structure comprises a first electrode disposed on a substrate, a piezoelectric layer disposed on the first electrode, a second electrode disposed on the piezoelectric layer, and an air cavity disposed in the substrate below at least a portion of a main membrane region defined by an overlap between the first electrode. The acoustic resonator structure may further comprise various integrated structures at or around the main membrane region to improve its electrical performance..
08/14/14
20140225682
 Acoustic resonator having temperature compensation patent thumbnailAcoustic resonator having temperature compensation
An acoustic resonator structure comprises a substrate having an air cavity, an acoustic stack disposed over the substrate and comprising a piezoelectric material disposed between a first electrode and a second electrode, and an acoustic reflector disposed over the substrate and comprising a single pair of acoustic impedance layers configured to reflect acoustic waves produced by vibration of the acoustic stack, wherein at least one of the acoustic impedance layers comprises a temperature compensating material.. .
08/14/14
20140225479
 Vibration element, method for manufacturing same, and vibration-type driving device patent thumbnailVibration element, method for manufacturing same, and vibration-type driving device
An aspect of the present invention relates to a vibration element comprising: a substrate; a ceramic layer containing glass and provided on the substrate; and a piezoelectric element comprising an electrode layer fixed to the substrate with the ceramic layer therebetween and a piezoelectric layer, wherein the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer are integrated by the piezoelectric layer, the electrode layer, the substrate, and the ceramic layer being sintered together at a sintering temperature of from 800° c. Or higher to 940° c.
08/14/14
20140225478
 Vibration element, method for manufacturing same, and vibration-type driving device patent thumbnailVibration element, method for manufacturing same, and vibration-type driving device
A vibration element includes: a substrate; a ceramic layer containing molten glass and provided on the substrate; and a piezoelectric element fixed to the substrate with the ceramic layer therebetween, wherein the piezoelectric element includes a first electrode layer provided in contact with the ceramic layer, a second electrode layer, and a piezoelectric layer provided between the first electrode layer and the second electrode layer, and the first electrode layer has a thickness larger than that of the second electrode layer.. .
08/14/14
20140225477
 Receiving circuit, semiconductor device, and sensor device patent thumbnailReceiving circuit, semiconductor device, and sensor device
A receiving circuit (10) includes an amplifier (15) which amplifies receiving signals (sp, sn) of a piezoelectric sensor (2), and a plurality of transistors (11a, 11b) or (12a, 12b), which are connected in parallel to between one end of the piezoelectric sensor (2) and one end of the amplifier (15), and are turned on with phase shift when switching is performed to receiving operations.. .
08/14/14
20140225060
Group iii nitride semiconductor light-emitting device and method for producing the same
The present invention provides a group iii nitride semiconductor light-emitting device exhibiting high light efficiency achieved by relaxing a piezoelectric field generated in a light-emitting layer without deteriorating the crystal quality of the light-emitting layer, and a method for producing the same. The light-emitting device has a light-emitting layer in which layer units are repeatedly deposited.
08/14/14
20140224019
Piezoelectric sensors and sensor arrays for the measurement of wave parameters in a fluid, and method of manufacturing therefor
The present disclosure relates to piezoelectric sensors and piezoelectric sensor arrays, to methods of manufacturing therefor, and to a method of measuring characteristics of a mechanical wave using a piezoelectric sensor array. A piezoelectric sensor is formed of a silicon substrate on which an electrical barrier is added.
08/07/14
20140221841
Ultrasound probe, ultrasound diagnostic imaging apparatus and manufacturing method of ultrasound probe
Disclosed is an ultrasound probe which outputs ultrasound on a basis of a drive signal which is to be received. The ultrasound probe including a composite piezoelectric layer in which a piezoelectric material and a polymer material are arranged alternately in a one-dimensional array or in a two-dimensional array, an acoustic reflection layer which has an acoustic impedance higher than an acoustic impedance of the composite piezoelectric layer and an adhesion layer which bonds the composite piezoelectric layer and the acoustic reflection layer wherein in a bonding surface of the composite piezoelectric layer that bonds with the acoustic reflection layer, a polymer material part is concaved in a direction opposite to an acoustic reflection layer side comparing to an piezoelectric material part..
08/07/14
20140221840
Ultrasound transducer, ultrasound probe including the same, and ultrasound diagnostic equipment including the ultrasound probe
Provided are an ultrasound transducer, an ultrasound probe including the ultrasound transducer, and ultrasound diagnostic equipment including the ultrasound probe. The ultrasound transducer includes a piezoelectric unit including a plurality of piezoelectric elements which vibrate to convert ultrasound waves into electrical signals and electrical signals back into ultrasound waves, and a dummy piezoelectric unit which is disposed at edges of the effective piezoelectric unit and includes a plurality of dummy piezoelectric elements which vibrate due to vibration of the piezoelectric unit..
08/07/14
20140221772
Body surface sensors
A device for sensing lung sounds, comprising: a piezoelectric sensor comprising an electrical conductive plate attached to a piezoelectric material, said sensor encased in a body structure; a first electric wire connected to the piezoelectric material on the opposite side of said plate; a second electric wire connected to said plate; a connector connected to the other ends of said first and second electric wires; and an adhesive layer connected to the surface of said plate on the side opposite to the piezoelectric material, said adhesive layer facing away from said plate; said device adapted to provide electrical signals representing vibrations present on the surface of a object when it is attached to said object surface with said adhesive layer; said electrical signals resulting from vibrations on the object surface, wherein stress applied on the piezoelectric material generates electrical voltage-difference on both sides of the piezoelectric material, creating voltage build-up on said first and second electric wires.. .
08/07/14
20140220498
Method for accelerating combustion, apparatus thereof and heat engine
A method for accelerating combustion includes installing a piezoelectric element in the vicinity of a combustion chamber that combusts fuel, applying a magnetic field to the piezoelectric element, and radiating electromagnetic waves that are produced by the piezoelectric element over at least the fuel in the combustion chamber. These electromagnetic waves include far-infrared radiation..
08/07/14
20140219840
Device for moving air
A device for moving air comprising a piezoelectric element attached to a planar body. The planar body is configured to oscillate at a movable end generating an airflow in response to applying alternating electric current to said piezoelectric element.
08/07/14
20140219838
Piezoelectric cooling fan
A piezoelectric cooling fan comprises a support frame and two piezoelectric actuators. Each piezoelectric actuator includes an electrical-conductive plate and a piezoelectric plate attached to the electrical-conductive plate, wherein an edge portion of the electrical-conductive plate is fixedly attached to a base of the support frame and approximately aligned with an edge portion of the piezoelectric plate attached thereto.
08/07/14
20140219315
Cantilevered probe detector with piezoelectric element
A disclosed chemical detection system for detecting a target material, such as an explosive material, can include a cantilevered probe, a probe heater coupled to the cantilevered probe, and a piezoelectric element disposed on the cantilevered probe. The piezoelectric element can be configured as a detector and/or an actuator.
08/07/14
20140218992
Compound semiconductor device and method for manufacturing the same
An algan/gan-hemt has a structure including: compound semiconductor layers formed on a substrate; a gate electrode, a gate pad that has a current path formed between the gate electrode and itself, and a semiconductor layer that is spontaneously polarized and piezoelectrically polarized, which are formed on the compound semiconductor layer; and a gate electrode connection layer formed on the semiconductor layer, wherein the gate electrode connection layer and the gate electrode are electrically connected with each other. This structure which is relatively simple allows the algan/gan-hemt to realize an intended normally-off operation without causing such inconveniences as increase in a sheet resistance, increase in an on-resistance, and increase in a leakage current..
08/07/14
20140218841
Low acoustic noise capacitors
The described embodiments relate generally to a capacitor assembly for mounting on a printed circuit board (pcb) and more specifically to designs for mechanically isolating the capacitor assembly from the pcb to reduce an acoustic noise produced when the capacitor imparts a piezoelectric force on the pcb. Termination elements in the capacitor assembly, including a porous conductive layer in the capacitor assembly may reduce an amount of vibrational energy transferred from the capacitor to the pcb.
08/07/14
20140218588
Dust removing device and imaging device
Provided is a dust removing device that can be designed and controlled appropriately and has high dust removal performance even at low temperature, and an imaging device using the dust removing device. In a dust removing device to be set on a base, including a piezoelectric element formed of a piezoelectric material and a pair of opposing electrodes, a vibration member, and a fixation member containing at least a high molecular compound component, a phase transition temperature t from a first ferroelectric crystal phase to a second ferroelectric crystal phase of the piezoelectric material is set to −60° c.≦t≦−5° c., and whereby, the dust removing device can be designed and controlled appropriately and high dust removal performance can be obtained even at low temperature..
08/07/14
20140217856
Piezoelectric resonator element and piezoelectric resonator
A piezoelectric resonator element includes a piezoelectric substrate formed of an at-cut quartz crystal substrate in which the thickness direction thereof is a direction parallel to the y′ axis; and excitation electrodes disposed so as to face vibrating regions on both front and rear principal surfaces of the piezoelectric substrate. The piezoelectric substrate includes a rectangular excitation portion in which sides parallel to the x axis are long sides thereof, and sides parallel to the z′ axis are short sides thereof; and a peripheral portion having a smaller thickness than the excitation portion and formed around the excitation portion.
08/07/14
20140217855
Vibration power-generating strain wave gearing
The strain wave gearing includes a rigid internally toothed gear, a flexible externally toothed gear that is disposed coaxially therein and is flexible in the radial direction, and a wave generator that is disposed coaxially inside the externally toothed gear. The flexible externally toothed gear is bent in the radial direction by the wave generator and meshes with the rigid internally toothed gear in sections.
08/07/14
20140217853
Piezoelectric generator
The present disclosure provides an ionic ring comprising a number of piezoelectric elements, a piezoelectric device including the ionic ring, and a piezoelectric generator including the ionic ring and host devices incorporating the piezoelectric generator. The piezoelectric generator can be used to generate energy on a portable electronic device in response to mechanical deformation.
08/07/14
20140217661
Hydraulic mount apparatus for supporting vibration source
A hydraulic mount apparatus (20) for supporting a vibration source is disclosed. The mount apparatus (20) includes a housing (22) that defines a housing chamber (24) separated by a partition assembly (62) into a pumping chamber (64) and a receiving chamber (66), each containing a magnetorheological fluid (68).
08/07/14
20140217312
Leaf module for a multi-leaf collimator and multi-leaf collimator
A leaf module for a multi-leaf collimator comprises a leaf unit and a leaf drive unit. The leaf unit comprises a leaf for shielding beams from a selected area.
08/07/14
20140216696
Cooling device and a cooling assembly comprising the cooling device
A cooling device comprises a heat sink having fins and a piezofan having a piezoelectric element attached to a planar body. The planar body is capable of oscillating at a movable end in response to applying alternating electric current to the piezoelectric element, thereby generating an air flow toward an output of the cooling device.
08/07/14
20140216174
Force sensitive touch sensor
A force sensitive touch sensor (100) is provided. The sensor (100) comprises an insulating support layer (101) and an electrically conductive sensor structure (102).
08/07/14
20140216170
Systems and methods for monitoring cutting forces in peripheral end milling
Systems and methods for monitoring cutting forces in a peripheral end milling process are disclosed. The systems and methods comprise a sensor module that integrates a thin-film polyvinylidene fluoride (pvdf) piezoelectric strain sensor and an in situ data logging platform for monitoring such cutting forces.
08/07/14
20140216141
Piezo actuated fluid dispenser fluid characterization
A technique, including a system and a method, for measuring a fluid property using a piezo-actuated fluid dispenser, is disclosed. The technique includes generating a pressure wave in a channel in the piezo-actuated fluid dispenser using a piezo element, detecting, using the piezo element, a residual pressure oscillation in the channel caused by the generating, obtaining a resonance frequency of the pressure oscillation, and determining, using the resonance frequency, the fluid property..
08/07/14
20140216052
Ignition device and method for a turbomachine combustion chamber
A method and device for igniting a turbomachine combustion chamber including alternately: an intake phase of a fluid into a chamber through an intake port, during which a piston compresses an elastic mechanism under pressure of the fluid such that the elastic mechanism applies onto a piezoelectric element a force sufficient for the piezoelectric element to induce between the electrodes an electric voltage enabling an electric arc to be generated, until the piston reaches a predetermined position for closing a valve for sealing the intake port; and an exhaust phase of the fluid, during which the elastic mechanism pushes back the piston to induce a fluid ejection out of the chamber through an exhaust port, and the valve is open.. .
08/07/14
20140215785
1-d tire patch apparatus and methodology
Disclosed is a tire mountable apparatus and method that includes a substrate defining a longitudinal direction, a top surface and a bottom surface. The substrate has a plurality of conductor terminals arranged in a substantially linear relationship.
08/07/14
20140215784
Method for manufacturing a high-temperature ultrasonic transducer using a lithium niobate crystal brazed with gold and indium
A process for manufacturing a high-temperature ultrasonic transducer, said transducer comprising a steel or metal top electrode, a piezoelectric converter, a steel or metal support ensuring the interface between the converter and the propagation medium of the acoustic waves, a first joint between the support and the piezoelectric crystal, and a second joint between the converter and the top electrode, comprises, to produce said gold-and-indium-based joints, a brazing and diffusing operation comprising the following steps: a first step of increasing temperature to a first temperature comprised between about 150° c. And about 400° c.
08/07/14
20140215684
Pressure sensing glove
An pressure sensing glove in which at least five, preferably at least seven and most preferably at least nine pressure sensors are intrinsic to the glove manufacture, usually sandwiched between layers of the glove. Between five to nine pressure sensors are positioned throughout the glove, and the pressure sensors themselves may be capacitive sensors, piezoelectric sensors, air filled bladder pressure sensors in communication with hollow tubes further connected to electronic pressure sensors, or any other sensor known in the art..


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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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This listing is a sample listing of patent applications related to Piezo for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Piezo with additional patents listed. Browse our RSS directory or Search for other possible listings.
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