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


Electron emission device

Piezoeletric sensing element and torque sensor assembled with the same

Resonator and fabricating method thereof

Date/App# patent app List of recent Piezoelectric-related patents
07/24/14
20140203893
 Elastic wave device patent thumbnailnew patent Elastic wave device
An elastic wave device includes a medium layer, a piezoelectric body, and an idt electrode that are disposed on a supporting substrate. The medium layer is made of a medium containing a low-velocity medium in which a propagation velocity of a same bulk wave as that which is a main vibration component of an elastic wave propagating in the piezoelectric body and being used is lower than a propagation velocity of the elastic wave, and a high-velocity medium in which the propagation velocity of the same bulk wave as that which is a main vibration component of the elastic wave is higher than the propagation velocity of the elastic wave..
07/24/14
20140203707
 Electron emission device patent thumbnailnew patent Electron emission device
Provided herein are electron emission devices and device components for optical, electronic and optoelectronic devices, including cantilever-based mems and nems instrumentation. Devices of certain aspects of the invention integrate a dielectric, pyroelectric, piezoelectric or ferroelectric film on the receiving surface of a substrate having an integrated actuator, such as a temperature controller or mechanical actuator, optionally in the form of a cantilever device having an integrated heater-thermometer.
07/24/14
20140203690
 Manufacturing method of cylindrical piezoelectric element, cylindrical piezoelectric element, and minute drive mechanism patent thumbnailnew patent Manufacturing method of cylindrical piezoelectric element, cylindrical piezoelectric element, and minute drive mechanism
In manufacturing method of a cylindrical piezoelectric element, a cylindrical piezoelectric material is formed by molding a piezoelectric material into a cylindrical shape and subjecting the molded piezoelectric material to calcination. A reference electrode is provided on an inner circumferential surface of the cylindrical piezoelectric material.
07/24/14
20140203689
 Resonator element, resonator, oscillator, electronic apparatus and moving object patent thumbnailnew patent Resonator element, resonator, oscillator, electronic apparatus and moving object
A resonator element has a piezoelectric substrate including a vibration section and a thick section having a thickness which is thicker than that of the vibration section, and a pair of excitation electrodes provided on a surface and aback surface of the vibration section. In addition, the thick section has a second thick section provided along a second outer edge of the vibration section.
07/24/14
20140203687
 Stealth dicing for ultrasound transducer array patent thumbnailnew patent Stealth dicing for ultrasound transducer array
An ultrasound transducer array is formed with stealth dicing. A laser is used to form defects within the piezoelectric substrate and along the desired kerf locations.
07/24/14
20140203686
 Resonator and fabricating method thereof patent thumbnailnew patent Resonator and fabricating method thereof
Provided are a resonator and a method of fabricating the same. The resonator may include a first electrode disposed on a substrate, a piezoelectric layer disposed on the first electrode, a second electrode disposed on the piezoelectric layer, and a control layer disposed on the second electrode and having a frame with an uneven surface..
07/24/14
20140203684
 Ultrasonic generation device patent thumbnailnew patent Ultrasonic generation device
An ultrasonic generation device including an ultrasonic generation element having a frame, a first piezoelectric vibrator, and a second piezoelectric vibrator and configured to emit ultrasonic waves in a buckling tuning-fork vibration mode in which the first piezoelectric vibrator and the second piezoelectric vibrator vibrate in mutually opposite phases at the same frequency. Further, a housing receives the ultrasonic generation element and has ultrasonic emission ports, a first acoustic path extending from a vicinity of a vibration surface of the first piezoelectric vibrator to a vicinity of the ultrasonic emission ports, and a second acoustic path extending from a vicinity of a vibration surface of the second piezoelectric vibrator to the vicinity of the ultrasonic emission ports..
07/24/14
20140202350
 Inertially operated piezoelectric energy harvesting electronic circuitry patent thumbnailnew patent Inertially operated piezoelectric energy harvesting electronic circuitry
An electrical energy harvesting device for harvesting electrical energy from a pulsed impact loading event. The device including: a piezoelectric element configured to be loaded and unloaded to a first load level by the pulsed impact loading event; and a first inductor coupled to the piezoelectric element configured to be loaded and unloaded to a second load level by the pulsed impact loading event, wherein the piezoelectric element and the first inductor together operate as a first inductor/capacitor (lc) resonant circuit having a first resonance frequency and wherein the loading of the first inductor lags in time the loading of the piezoelectric element..
07/24/14
20140202261
 Piezoeletric sensing element and torque sensor assembled with the same patent thumbnailnew patent Piezoeletric sensing element and torque sensor assembled with the same
A piezoelectric sensing element includes a ring type piezoelectric device, two ceramic structural adhesives, two electrode sheets, two structural adhesives, a ring type sheet, and a disk-shaped cylindrical ceramic sheet. The two ceramic structural adhesives, respectively located above and below the ring type piezoelectric device.
07/24/14
20140202245
 Piezoelectric device with a package including a convex part patent thumbnailnew patent Piezoelectric device with a package including a convex part
A piezoelectric device includes: a piezoelectric vibrating reed; and a package, wherein the piezoelectric vibrating reed has a vibrating part and first and second supporting arms extending from a base end part, the package has a base, a lid, a cavity defined by the base and the lid, a convex part projecting from the base or the lid into the cavity, a length of the first supporting arm is shorter than a length of the second supporting arm, and the convex part is provided in a range ahead of a leading end of the first vibrating arm in an extension direction of the first supporting arm and at least partially overlapping with the second supporting arm in a length direction of the piezoelectric vibrating reed so as not to overlap with the piezoelectric vibrating reed in a plan view.. .
07/17/14
20140199757
Atomic layer deposition inverted passivated surface acoustic wave sensor for early detection of biofilm growth
A surface acoustic wave (saw) biofilm sensor includes a transmitting electric to acoustic wave transducer defining an upper surface and a lower surface, a receiving acoustic wave to electric transducer defining an upper surface and a lower surface, a piezoelectric film layer defining an upper surface and a lower surface, and a passivation film layer defining an upper surface and a lower surface. Portions of the lower surface of the piezoelectric film layer are disposed on the upper surface of the transmitting electric to acoustic wave transducer and on the upper surface of the receiving acoustic wave to electric transducer, and the lower surface of the passivation film layer is disposed on the upper surface of the piezoelectric film layer such that the upper surface of the passivation film layer is configured to enable contact with a biofilm..
07/17/14
20140199756
Physical means and methods for inducing regenerative effects on living tissues and fluids
The present invention discloses a system for the administration of a plasma modified field (pmf) to a subject comprising: (a) a non thermal plasma (ntp) emitting source for emitting a plasma beam; (b) a plasma modified field coupling mechanism (pmfcm) comprising a plasma beam dish having at least one opening for the passage of said plasma beam; said plasma beam dish having a first surface and a second opposite surface; and (c) a controller for controlling said pmfcm. In a main aspect of the invention, said first surface of said plasma beam dish is mounted with: (i) at least one coupling element selected from the group consisting of: (1) at least one ferroelectric element for providing said field; (2) at least one ferromagnetic element for providing said field; (3) at least one piezoelectric element for providing said field; and (4) at least one piezomagnetic element for providing said field; and (ii) at least one reflecting element.
07/17/14
20140198626
Piezoelectric motor, liquid ejecting apparatus, and clock
A piezoelectric motor includes a piezoelectric element having a piezoelectric layer, and a first and a second electrodes, the first electrode provided on one surface side of the piezoelectric layer, and the second electrode provided on the other surface side of the piezoelectric layer; a piezoelectric actuator having a vibrating member anchored to the first electrode of the piezoelectric element; and a rotational shaft with which the vibrating member makes contact and is rotated thereby. The piezoelectric layer includes a vertical vibration excitation region, provided toward the center of the piezoelectric layer in the widthwise direction, that elicits vertical vibrations, and two groups of bending vibration excitation regions, one group disposed on either side of the vertical vibration excitation region so that two opposing diagonal pairs are formed; and the polarization direction of the vertical vibration excitation region and one of the groups of the bending vibration excitation regions in the piezoelectric layer is inverted relative to the other group of the bending vibration excitation regions..
07/17/14
20140198373
Reflective color display
A reflective color display is disclosed. A substrate supports a first conductor layer and pixel wells.
07/17/14
20140198260
Electronic device having a projector function and a vibrating mirror element
A vibrating mirror element includes a mirror part that reflects light and is tiltable around a rotation axis, a first deformable coupling beam and a second deformable coupling beam connected respectively to a first mirror end portion and a second mirror end portion of the mirror part positioned on an intersection line that intersects the rotation axis, and a first drive part and a second drive part that each include a piezoelectric element that deforms by voltage application, the first drive part and a second drive part connected respectively to the first deformable coupling beam and the second deformable coupling beam.. .
07/17/14
20140198259
Electronic device having a projector function and a vibrating mirror element
A vibrating mirror device includes a mirror portion, a driving portion including a detecting electrode that detects an amount of deformation of a piezoelectric element when driving the mirror portion by applying a voltage to cause the piezoelectric element to deform, an insulating layer formed on a top face of the piezoelectric element, and a first lead interconnection that is formed on the top face of the insulating layer, that contacts the detecting electrode, and that extends to a region outside of the driving portion.. .
07/17/14
20140198095
Electronic device having a projector function and a vibrating mirror element
A vibrating mirror element includes a mirror portion that reflects light and is tiltable around a rotational axis, a tiltable frame portion connected to a mirror end portion of the mirror portion at a position on an intersecting line that intersects with the rotational axis, a driving portion that includes a piezoelectric element that deforms through application of a voltage, and a connecting portion that connects the frame portion and the driving portion and is tiltable through deformation of the piezoelectric element of the driving portion. The frame portion can be tilted by tilting the connecting portion, and the mirror portion can be tilted by tilting the frame portion..
07/17/14
20140198072
In-pixel ultrasonic touch sensor for display applications
A video display is provided with a planar piezoelectric transmitter to transmit ultrasound signals, and a display panel including a plurality of pixels. Each pixel has a data interface to accept a video signal with a variable voltage associated with a range of light intensity values, and to supply a touch signal with a variable voltage derived from a range of reflected ultrasound signal energies.
07/17/14
20140197898
High sensitivity micro-piezoelectric tunable resonator
A highly sensitive micro-piezoelectric tunable resonator element and device that uses a tapered transition region from the actuator and sensor elements to the resonator beam to permit maximum mechanical energy transfer to the beam. A dual-resonator beam embodiment with a shared tuning element is provided in an alternative embodiment..
07/17/14
20140197850
Piezoelectric sensor for the detection and characterization of at least one biochemical element
A piezoelectric sensor for the detection and characterization of at least one biochemical element in a fluid, has a piezoelectric substrate exhibiting at each of its opposite faces at least one conducting surface forming electrodes, the electrodes being linked to an electrical generator, one at least of the surfaces being wrapped in a functionalized film, the electrodes form transmission lines exhibiting a zone constituting an induction loop for the excitation of the piezoelectric substrate, the link between the electrodes and the generator being ensured by inductive coupling. A system implementing such a sensor, as well as applications of such a sensor, are described..
07/10/14
20140195103
Energy harvesting power output measurement apparatus and methods for cycling
The present teachings provide apparatus and methods for measuring the power output of a person, such as a cyclist. According to various embodiments, while measuring the power output, the present teachings provide for the harvesting of the input energy to provide electrical power to the apparatus.
07/10/14
20140194673
Piezoelectric-based, self-sustaining artificial cochlea
Piezoelectric transducer arrays and methods of making the same are discussed. Such an array can include a piezoelectric film comprising a plurality of segments.
07/10/14
20140192628
Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece
A piezoelectric vibrating piece includes a pair of vibrating arm portions, a base portion which is arranged between a pair of vibrating arm portions, and connecting portions which connect proximal end portions of a pair of vibrating arm portions and a proximal end portion of the base portion. Narrow width portions are provided at the base of the base portion..
07/10/14
20140192625
Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus, and radio-controlled timepiece
A piezoelectric vibrating piece includes a pair of vibrating arm portions which are arranged with a center axis interposed therebetween, a base portion which is arranged between a pair of vibrating arm portions and fixed to the outside, and a pair of connecting portions which connect proximal end portions of a pair of vibrating arm portions and a proximal end portion of the base portion. The distance between distal end portions of the vibrating arm portions and the center axis is smaller than the distance between the proximal end portions of the vibrating arm portions and the center axis..
07/10/14
20140192437
Head rotator assembly for tape drive
A head rotator assembly (22) for positioning a head (20) of a tape drive (10) relative to a storage tape includes a head supporter (230) and a supporter mover assembly (232). The head supporter (230) is coupled to and supports the head (20).
07/10/14
20140192118
Piezoelectric inkjet die stack
A piezoelectric inkjet die stack includes a circuit die stacked on a substrate die, a piezoelectric actuator die stacked on the circuit die, and a cap die stacked on the piezoelectric actuator die. Each die in succession from the circuit die to the cap die is narrower than the previous die..
07/10/14
20140192105
Piezoelectric element drive method and liquid ejecting device
Liquid is forced to be ejected from a liquid chamber as a drive voltage is applied to the piezoelectric element that forms part or all of the walls of the liquid chamber by means of a drive circuit to deform the piezoelectric element. The drive circuit applies a pre-drive voltage to the piezoelectric element prior to the application of the drive voltage waveform for driving the piezoelectric element.
07/10/14
20140191826
Piezoelectric thin film resonator and filter
A piezoelectric thin film resonator includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode located to sandwich the piezoelectric film; a load film formed from patterns in a resonance region in which the lower electrode and the upper electrode face each other across the piezoelectric film, wherein the patterns are formed so as to surround a center of the resonance region and intersect with a pathway extending from the center to an outer periphery of the resonance region.. .
07/10/14
20140191622
Piezoelectric component and method for producing a piezoelectric component
A piezoelectric component (1), which serves particularly as a piezoelectric sensor or piezoelectric actuator, comprises a basic body (6) which has a first ceramic layer (7), a second ceramic layer (8) and an internal electrode layer (9). In this case, the internal electrode layer (9) is provided at least partially between the first ceramic layer (7) and the second ceramic layer (8).
07/10/14
20140191621
Piezoelectric component and method for producing a piezoelectric component
A piezoelectric component (1), which serves in particular as a piezoelectric sensor or a piezoelectric actuator, comprises a main body (2). The main body (2) has a first ceramic layer (15), a second ceramic layer (16) and an inner electrode layer (17).
07/10/14
20140191620
Piezoelectric component and method for producing a piezoelectric component
An electrically conductive contact layer (4) is provided with a joining material (9) during a method for producing a piezoelectric component (1), in particular a piezoelectric sensor (1). To this end, the electrically conductive contact layer (4) can be dipped into a paste that serves to form the joining material (9).
07/10/14
20140191619
Piezoelectric device and method for manufacturing piezoelectric device
In a method of manufacturing a piezoelectric device, among a +c plane on a +z axis side of a piezoelectric thin film and a −c plane on a −z axis side of the piezoelectric thin film, the −c plane on the −z axis side of the piezoelectric thin film is etched. Thus, −z planes of the piezoelectric thin film on which epitaxial growth is possible are exposed.
07/10/14
20140191618
Poling treatment method, plasma poling device, piezoelectric body and manufacturing method thereof, film forming device and etching device, and lamp annealing device
A plasma poling device includes a holding electrode (4) which is disposed in a poling chamber (1) and holds a substrate to be poled (2), an opposite electrode (7) which is disposed in the poling chamber and disposed facing the substrate to be poled held on the holding electrode, a power source (6) electrically connected to one electrode of the holding electrode and the opposite electrode, a gas supply mechanism supplying a plasma forming gas into a space between the opposite electrode and the holding electrode, and a control unit controlling the power source and the gas supply mechanism. The control unit controls the power source and the gas supply mechanism so as to form a plasma at a position facing the substrate to be poled and to apply a poling treatment to the substrate to be poled..
07/10/14
20140191616
Mems switch
A mems switch has fixed support, a plate-shaped flexible beam having at least one end immovably supported by the fixed support and having an extending movable surface, a movable electric contact disposed on the movable surface of the flexible beam, a fixed electric contact facing the movable electric contact and disposed at a fixed position relative to the fixed support, first piezoelectric driver disposed above the movable surface of the flexible beam, extending from a portion above the fixed support towards the movable electric contact, and capable of displacing the movable electric contact towards the fixed electric contact by voltage driving, and second piezoelectric driver disposed at least on the movable surface of the flexible beam and capable of so driving a movable part of the flexible beam by voltage driving that the movable electric contact is separated from the fixed electric contact.. .
07/10/14
20140191221
Piezoelectric pressure sensor
Replacement sheet. .
07/10/14
20140191062
Liquid ejection head and liquid ejection apparatus
Provided is a liquid ejection head, including a pressure chamber in which a liquid flows, at least a part of a wall surface of the pressure chamber being formed of a piezoelectric member; an ejection orifice for ejecting the liquid in the pressure chamber pressurized by deformation of the piezoelectric member; a temperature control liquid flow path in which a temperature control liquid flows, the temperature control liquid flow path being provided independently from the pressure chamber and formed so as to be adjacent to the pressure chamber via the wall surface of the pressure chamber, at least a part of a wall surface of the temperature control liquid flow path being formed of the piezoelectric member; and a circulation liquid flow path communicating with the temperature control liquid flow path, for circulating the temperature control liquid.. .
07/10/14
20140190267
Fastener tension monitoring system
The fastener tension monitoring system provides for automatic notification when a structural tensile fastener, such as a bolt, is loosened. The system incorporates piezoelectric material in the core of the fastener shank or deposited around the shank.
07/10/14
20140190228
Method and device for compensating deviations during a deforming operation between two beams of a press
The invention relates to a method for compensating deviations in a deforming operation between two beams of a press, comprising of arranging one or more compensating element at a suitably chosen location in the press, detecting the deviations and moving the compensating element(s) relative to the beams by (electro) mechanical means during the deforming operation such that the detected deviations are compensated. The compensating elements can be moved here to an over-compensating position prior to the deforming operation and pressed out of their over-compensating position during the operation by the load on the beam, wherein each compensating element exerts an adjustable resistance force on surrounding parts of the press.
07/03/14
20140188055
Devices for clearing blockages in in-situ artificial lumens
Devices and methods for the effective clearing of artificial tubes, especially in-situ clearing of artificial tubes in a living being is covered in this disclosure. An elongated clearing member includes either a fixed or an adjustable element that selectively defines the portion of the elongated clearing member that is insertable within the artificial tube.
07/03/14
20140187957
Ultrasonic transducer electrode assembly
The present disclosure provides a method of fabricating an ultrasound transducer. A substrate having a first side and a second side opposite the first side is provided.
07/03/14
20140187956
Ultrasonic transducer electrode assembly
The present disclosure provides a method of fabricating an ultrasound transducer. A substrate having a first side and a second side opposite the first side is provided.
07/03/14
20140187003
High electron mobility transistor and manufacturing method thereof
The present invention discloses a high electron mobility transistor (hemt) and a manufacturing method thereof. The hemt includes a semiconductor layer, a barrier layer on the semiconductor layer, a piezoelectric layer on the barrier layer, a gate on the piezoelectric layer, and a source and a drain at two sides of the gate respectively, wherein each bandgap of the semiconductor layer, the barrier layer, and the piezoelectric layer partially but not entirely overlaps the other two bandgaps.
07/03/14
20140186200
Fan blade adjustment piezoelectric actuator
A pump for driving a hydraulic fluid to adjust an angle of an airfoil has a transmission to be rotated to change the angle of incident of a plurality of airfoils. The transmission is driven through a rotating input to in turn rotate, and change the angle.
07/03/14
20140186062
Developer container unit, developing unit, and process cartridge
A developer container unit includes a container containing developer and a piezoelectric film for detecting an amount of developer in the container. A sensitivity of the piezoelectric film to a stress in a direction parallel to a film surface is greater than a sensitivity of the piezoelectric film to a stress in a direction perpendicular to the film surface, and the piezoelectric film is deformable with a movement thereof relative to the developer..
07/03/14
20140185140
Vibration apparatus and imaging appliance
A vibration apparatus includes a plate-shaped dust prevention member, a vibration application member, and an electrode. The vibration application member includes a flexible thin plate-shaped piezoelectric member, and vibrates the dust prevention member.
07/03/14
20140184878
Piezoelectric material, piezoelectric element, and electronic apparatus
A piezoelectric material according to an embodiment of the present invention contains no lead, has a low degree of temperature dependency of piezoelectric performance within operation temperature ranges of piezoelectric elements, and good piezoelectric properties.. .
07/03/14
20140184876
Piezoelectric material, piezoelectric element, and electronic apparatus
A piezoelectric material includes, as a main component, a perovskite-type metal oxide represented by a general formula (ba1-xcax)a(ti1-y-zsnyzrz)o3 where 1.00≦a≦1.01, 0.125≦x≦0.300, 0≦y≦0.020, and 0.041≦z≦0.074, the perovskite-type metal oxide containing copper (cu) and manganese (mn). A cu content relative to 100 parts by weight of the metal oxide is 0.02 parts by weight or more and 0.60 parts by weight or less on a metal basis, and a mn content relative to 100 parts by weight of the metal oxide is 0.12 parts by weight or more and 0.40 parts by weight or less on a metal basis..
07/03/14
20140184706
Liquid ejecting head and liquid ejecting apparatus
According to a liquid ejecting head, it is possible to suppress erosion of a vibrating plate by liquid, suppress generation of variation in a vibrating property, and realize a thin head. The liquid ejecting head includes a flow path formation substrate on which a pressure generation chamber communicating with nozzle openings for discharging liquid is provided, an elastic film which is provided on one surface side of the flow path formation substrate and seals the pressure generation chamber, and a piezoelectric actuator which is a pressure generation unit which is provided on the elastic film to deform the elastic film.
07/03/14
20140184029
Microelectromechanical system-based resonator device
The disclosure provides a structure for a microelectromechanical system (mems)-based resonator device. The structure for the mems-based resonator device includes at least one resonator unit.
07/03/14
20140184028
Hybrid radio frequency component
Methods and systems may provide for a hybrid rf mems component design including an electrostatic actuation and a piezoelectric actuation. In one example, the method may include applying a first voltage to generate a first piezoelectric force to reduce a first gap between a cantilever and an actuation electrode, and applying a second voltage to generate an electrostatic force to create contact between the cantilever and a transmission electrode..
07/03/14
20140184027
Layout and method of singulating miniature ultrasonic transducers
The present disclosure provides a method of singulating a plurality of miniature ultrasound transducers from a wafer. The method includes receiving a wafer on which a plurality of miniature ultrasound transducers is formed.
07/03/14
20140184023
Layout and method of singulating miniature ultrasonic transducers
The present disclosure provides a method of singulating a plurality of miniature ultrasound transducers from a wafer. The method includes receiving a wafer on which a plurality of miniature ultrasound transducers is formed.
07/03/14
20140184022
Porosity control in piezoelectric films
A piezoelectric film having a porosity between 20 and 40%, a thickness ranging from tens of microns to less than a few millimeters can be used to form an ultrasonic transducer ut for operation in elevated temperature ranges, that emit pulses having a high bandwidth. Such piezoelectric films exhibit greater flexibility allowing for conformation of the ut to a surface, and obviate the need for couplings or backings.
07/03/14
20140184021
Piezoelectric stack transducer
Provided is a piezoelectric stack transducer. In a transducer portion, a plurality of piezoelectric transducers which output maximum amplitude at different frequencies are continuously stacked.
07/03/14
20140184020
Ultrasonic vibration apparatus
Substantially uniform rigidity is ensured in all radial directions while achieving a size reduction. An ultrasonic surgical apparatus is provided, including a polygonal columnar elastic body that is formed of an elastic body and that has a substantially regular polygonal cross-section; plate-like piezoelectric elements that are secured to mutually opposing side surfaces of the polygonal columnar elastic body and that are polarized in a plate-thickness direction; a rod-like contactor that is secured to an end of the polygonal columnar elastic body and that has a smaller diameter than the polygonal-columnar elastic body; and a drive-pulse generating circuit that causes the rod-like contactor to ultrasonically vibrate by generating a vertical vibration which expands/contracts the polygonal columnar elastic body in the longitudinal direction by applying an ac voltage to the piezoelectric elements in the plate-thickness direction..
07/03/14
20140184019
Circuit module and composite circuit module
A circuit module and a composite circuit module, which suppress or prevent damage to a connection to or within a device when heat is applied, includes a saw filter including a piezoelectric substrate. In a package substrate that is a resin substrate, the saw filter is mounted.
07/03/14
20140182385
Photoacoustic probe and photoacoustic device having the same
A photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact caused by an ultrasonic wave generated in the photoacoustic probe without mounting a separate device. The photoacoustic probe and photoacoustic device implementing the photoacoustic probe may reduce an artifact by changing a configuration or a structure provided in the photoacoustic probe.
07/03/14
20140182382
Ultrasonic transducer assembly and system for monitoring structural integrity
In an ultrasonic transducer assembly, a conformable ultrasonic transducer has a piezoelectric layer and electrodes able to conform to curved surfaces, and a clamp for pressing the transducer into ultrasonic contact with a curved surface. Conformability is ensured with a thin, porous piezoelectric layer and suitable electrical conductors and insulators.
07/03/14
20140182378
Energy harvester powered accelerometer
A sensor may include a base, a resonator centered over the base, and an accelerometer disposed in a base of the resonator. The resonator may be configured to harvest energy from vibratory motion of a host device and includes a slot disposed on a center rectangular plane of the sensor.
07/03/14
20140182100
Pre-polarized film flex circuit based ultrasonic transducer
The present disclosure involves a method and apparatus for making a compact and flexible ultrasonic transducer assembly that works by using existing flex circuit fabrication processes, modified flex circuit fabrication processes, and pre-polled metalized piezoelectric film, and an asic to create a sub 1 mm ultrasonic transducer hybrid assembly.. .
06/26/14
20140180392
Stent for restenosis prevention
A device for use in reducing or preventing the occurrence of restenosis following procedures such as ptca, in which a stent is used to hold a bodily lumen open. The device comprises a two layered stent, one lying within the other.
06/26/14
20140180376
Intrinsic transduction system
An intrinsic transduction system for stimulating portions of the body. The output of the transducer is a stimulating and/or nerve regenerating frequency having components falling within predetermined frequency band limits so as to optimally excite touch nerve fibers relative to nociceptor or pain receptor nerve fibers.
06/26/14
20140180128
Focused rotational ivus transducer using single crystal composite material
An ultrasound transducer for use in intravascular ultrasound (ivus) imaging systems including a single crystal composite (scc) layer is provided. The transducer has a front electrode on a side of the scc layer; and a back electrode on the opposite side of the scc layer.
06/26/14
20140180117
Preparation and application of a piezoelectric film for an ultrasound transducer
The present disclosure involves a method of fabricating an ultrasound transducer. A piezoelectric polymer is mixed into a solution containing a first chemical and a second chemical to form a viscous film.
06/26/14
20140180103
Dual-mode piezocomposite ultrasonic transducer
A compact, high power, dual mode, emitting and receiving ultrasound transducer and method for applying ultrasonic energy within a living subject and for monitoring the effects it induces in tissue comprises a set of piezoelectric polymeric transducer elements and a set of piezoelectric ceramic elements, bonded together. The polymeric transducer elements have electrodes enabling their use for low power diagnostic imaging interrogation of the tissue and the ceramic transducer elements have electrodes enabling their use for high power therapy applications..
06/26/14
20140180090
Ultrasound diagnostic apparatus, tissue elasticity measurement method, and recording medium
When tissue elasticity of a subject is measured, an ultrasound diagnostic apparatus sets a sound velocity for each of segment regions established by dividing the subject, processes reception signals output by a piezoelectric element array based on the set sound velocities, and performs tissue elasticity measurement based on the reception signals processed based on the set sound velocities. Owing to this configuration, when tissue elasticity of a subject is measured, the ultrasound diagnostic apparatus prevents the accuracy of tissue elasticity measurement from deteriorating due to image distortions..
06/26/14
20140178574
Method and apparatus for focusing miniature ultrasound transducers
The present disclosure provides methods and apparatus of fabricating a transducer for use in ultrasound imaging. A substrate is provided.
06/26/14
20140178290
Bismuth iron oxide powder, manufacturing method for the bismuth iron oxide powder, dielectric ceramics, piezoelectric element, liquid discharge head, and ultrasonic motor
Provided is a lead-free dielectric ceramics having a low leakage current value, and a bismuth iron oxide powder as a raw material thereof. The bismuth iron oxide powder includes at least: (a) grains including a bismuth iron oxide having a perovskite-type crystal structure; (b) grains including a bismuth iron oxide having a crystal structure classified to a space group pbam; and (c) grains including a bismuth iron oxide or a bismuth oxide having a crystal structure that is classified to a space group i23.
06/26/14
20140178220
Piezoelectric micro-blower
A piezoelectric micro-blower includes an inner case to which a peripheral portion of a vibrating plate including a piezoelectric element is fixed such that a blower chamber is defined between the inner case and the vibrating plate and an outer case arranged to cover an outer periphery of the inner case with a gap therebetween. The inner case is elastically retained in the outer case by a plurality of connecting portions.
06/26/14
20140176646
Liquid ejecting head, liquid ejecting apparatus, piezoelectric element, and method for manufacturing piezoelectric element
A flow channel substrate has pressure chambers, and the pressure chambers communicate with nozzle openings for ejecting liquid. Each of piezoelectric elements on the flow channel substrate has a piezoelectric layer, a pair of electrodes, and a wiring layer coupled to the electrodes.
06/26/14
20140176645
Piezoelectric actuator, inkjet print head assembly, and method of manufacturing the piezoelectric actuator and the inkjet print head assembly
A piezoelectric actuator includes upper and lower electrodes providing driving voltages and a piezoelectric film formed between the upper and lower electrodes and providing a driving force to ink in a plurality of pressure chambers formed on an inkjet print head, respectively. The piezoelectric film may include a plurality of basin parts individually formed on respective tops of the plurality of pressure chambers and a large-area part connected to the plurality of basin parts, respectively, at one ends of the plurality of basin parts and formed as a single body.
06/26/14
20140176507
Piezo-powered sensor card and method therefor
An electronic sensor device, powered by a piezoelectric source and including an electronic element, is provided. The device may be used to test for the presence of substance such as a gas, a liquid, a chemical substance or a biological substance, etc.
06/26/14
20140176261
Acoustic resonator device with at least one air-ring and frame
An acoustic resonator device includes a bottom electrode disposed on a substrate over an air cavity, a piezoelectric layer disposed on the bottom electrode, and a top electrode disposed on the piezoelectric layer, where an overlap between the top electrode, the piezoelectric layer and the bottom electrode over the air cavity defines a main membrane region. The acoustic resonator device further includes at least one air-ring defining a boundary of the main membrane region, and at least one first frame formed between the bottom electrode and the piezoelectric layer or formed between the substrate and the bottom electrode, and a second frame formed between the piezoelectric layer and the top electrode..
06/26/14
20140176257
Elastic-wave filter device
An elastic-wave filter device includes a reception filter section including a longitudinally coupled resonator-type elastic-wave filter section that has a balanced-to-unbalanced conversion function and has improved common-mode isolation characteristics. Among idt electrodes of a filter section, each of the other comb-shaped electrode of a first idt electrode including a pair of comb-shaped electrodes, one of which is connected to a first balanced-signal terminal, and the other comb-shaped electrode of a second idt electrode including a pair of comb-shaped electrodes, one of which is connected to a second balanced-signal terminal, is connected to one of ground electrodes that are provided on a piezoelectric substrate.


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

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