|| List of recent Piezo-related patents
|Method for producing composite piezoelectric body, method for producing ultrasound probe, composite piezoelectric body, ultrasound probe and ultrasound diagnostic imaging apparatus|
A method for producing a composite piezoelectric body includes: forming a composite piezoelectric body by filling a non-conductive polymer between a plurality of piezoelectric materials arranged in an array state at predetermined intervals, and polishing one surface of the composite piezoelectric body, from which surface at least the piezoelectric materials and the polymer are exposed, by using an abrasive film in which an abrasive particle is applied to a base film.. .
|Transducer assembly for an imaging device|
The present disclosure provides a transducer assembly. The transducer assembly includes a flex circuit.
|Two-photon endoscopic scanning assembly for inflammatory disease detection|
An endscopic imaging device is described that achieves longitudinal axis (z-axis) scanning into a tissue or sample, using a piezoelectric microactuator. In some configurations, additional lateral (xy-plane) scanning is also achieved, to allow for the creation of full three-dimensional imaging, ex vivo or in vivo.
|Eardrum supported nanomembrane transducer|
A flexible membrane of piezoelectric material sized to be supported by and to conform to the eardrum. Electrodes on the membrane allow the membrane to function as an audio transducer stimulating the eardrum with an audio signal or detecting audio signals at the eardrum.
|Chirped quasi phase-matched optical parametric amplifier/difference frequency generator (cqpm opa/dfg)-based optical tuning method, apparatus, and applications|
A method for wavelength tunable output from a broadband spectrum using a quasi phase-matched optical parametric amplifier/difference frequency generator (cqpm opa/dfg)-based apparatus involves changing the relative timing of a pump pulse with respect to a seed pulse. The temporal variation varies the location of the spatial/temporal overlap of the spectrally narrow pump pulse over the spectrally broad seed spectrum occurring within the cqpm nonlinear medium.
|Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece|
A piezoelectric vibrating piece is provided including: a pair of vibrating arm sections; a base section which is provided between the pair of vibrating arm sections; and connecting sections which connect base end sections of the pair of vibrating arm sections and a base end section of the base section, in which the vibrating arm sections have bending points and the vibrating arm sections extend in a direction away from the base section from the base end sections of the vibrating arm sections to the bending points, and the vibrating arm sections extend along the base section from the bending points to leading end sections of the vibrating arm sections.. .
|Piezoelectric vibrating piece, piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece|
A piezoelectric vibrating piece includes: a pair of vibrating arm sections which are disposed at a distance away from each other in a width direction of a base section; the base section to which each base end of the pair of vibrating arm sections is connected; and a support arm section that is connected to the base section between the pair of vibrating arm sections and extends from the base section to the same side as the pair of vibrating arm sections, in which convex sections are formed continuous with side surfaces of roots of the vibrating arm sections and side surfaces of the base section.. .
|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 configured to eject 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.
|Ink jet head and ink jet printing apparatus with driving channels and dummy channels|
An ink jet head includes a plurality of nozzles and a piezoelectric member provided with driving channels for storing ink. Each of the driving channels communicates a respective one of the nozzles.
|In-air ultrasonic rangefinding and angle estimation|
An apparatus for determining location of a moveable object in relation to an input device includes an array of one or more piezoelectric micromachined ultrasonic transducer (pmut) elements and a processor. The array is formed from a common substrate.
|Electrostatically tunable magnetoelectric inductors with large inductance tunability|
An electrostatically tunable magnetoelectric inductor including: a substrate; a piezoelectric layer; and a magnetoelectric structure comprising a first electrically conductive layer, a magnetic film layer, a second electrically conductive layer, and recesses formed so as to create at least one electrically conductive coil around the magnetic film layer; with a portion of the substrate removed so as to enhance deformation of the piezoelectric layer. Also disclosed is a method of making the same.
|Resonator element, resonator, oscillator, electronic apparatus, and moving object|
A resonator element includes a piezoelectric substrate that includes a vibration portion, and a thick portion which is integrally formed with an outer edge excluding a partial outer edge in an outer edge of the vibration portion and which is thicker than the vibration portion, and a pair of excitation electrodes that are respectively provided on a first main surface and a second main surface of a vibration region which are in front and rear relationships. In addition, the piezoelectric substrate includes first and second beam portions that are provided along a fourth side of the vibration portion..
|Nmr probe head with variable rf resonant circuit capacitor which can be adjusted in steps via a piezo-electric actuator|
An nmr probe head has a capacitor with a dielectric (5), which surrounds a cavity (15) in which a capacitor piston (7) is disposed. A sliding bush (9) has a through hole (16) in which a piston operating rod (8) extends.
A piezoelectric device includes a piezoelectric vibrating piece, a lid portion, and a base portion. The piezoelectric vibrating piece includes a vibrating portion, a framing portion surrounding the vibrating portion, an excitation electrode on the vibrating portion, and an extraction electrode on the framing portion.
|Piezoelectric power generating device|
A piezoelectric power generating device that includes a piezoelectric element having a first surface and a second surface opposite the first surface, a stopper, and a lever. The stopper has a first contact surface that is in contact with the first surface.
|Laminated piezoelectric element and multi-feed detection sensor|
A laminated piezoelectric element that includes a piezoelectric element layer and a matching layer. The piezoelectric element layer is configured to have a plurality of piezoelectric layers and a plurality of electrode layers laminated together.
|Thin film fabrication of rubber material with piezoelectric characteristics|
The present invention is related to a thin film fabrication of a rubber material with piezoelectric characteristics and a manufacturing method thereof. The present invention is developed by utilizing polymer casting, multilayer stacking, surface coating, and micro plasma discharge processes.
|Cavity structures for mems devices|
Embodiments relate to mems devices, particularly mems devices integrated with related electrical devices on a single wafer. Embodiments utilize a modular process flow concept as part of a mems-first approach, enabling use of a novel cavity sealing process.
|Synthetic jet actuator equipped with a piezoelectric actuator and a viscous seal|
A synthetic jet ejector (201) is provided which includes a housing (203). A blade (205) is disposed in the housing which has a first fixed end (207) and a second movable end (209), and which is driven by an actuator to trace out a first volume as its free end moves between a first apex and a second apex.
|Vehicles shock absorber|
An optical based authentication device that is attachable to a security document having a substrate. The authentication device includes: a piezoelectric material layer for generating an electric field in response to mechanical stress; and an optically responsive layer directly attached to the piezoelectric material layer, the attached layers being absent a direct electrical connection, the optically responsive layer being operable between a first state and a second state having different ocular perceptions.
|Switch control module with piezoelectric element and electric device employing same|
A switch control module for an electric device is provided. The switch control module includes a substrate and at least one piezoelectric element.
|High voltage converters for electrostatic applications|
A wall-crawling robot or other electroadhesive device can include a battery or other low voltage power source driving a motor that provides a primary device function, a voltage convertor adapted to convert the low voltage to a high voltage using the motor output, and electrodes configured to apply the high voltage to produce an electrostatic force between the electroadhesive device and a foreign substrate. The electrostatic force maintains a current position of the electroadhesive device relative to the foreign substrate, and the voltage convertor is separate from the primary function of the electroadhesive device.
A piezo injector includes (a) an actuator chamber in which a piezo actuator is arranged, (b) a control piston bore in which a control piston having a first end side facing the piezo actuator is arranged, wherein a portion of the control piston bore delimited by the first end side forms a first control chamber and an opposing portion of the control piston bore forms a spring chamber, and wherein the control piston is arranged between the first control chamber and the spring chamber, (c) a nozzle needle having a second end side, wherein the nozzle needle guides a nozzle needle sleeve, wherein the nozzle needle sleeve and the second end side delimit a second control chamber, (d) a connecting bore between the first control chamber and second control chamber, and (e) a leakage pin arranged between the piezo actuator and the first end side in a leakage pin bore.. .
|Sensing sensor and sensing device using piezoelectric resonator|
A sensing sensor includes a crystal element having a first excitation electrode, a second excitation electrode, and a common electrode, an adsorbing layer, a wiring board, and a channel forming member. The crystal element is secured to the wiring board so as to form a space at one surface side of the first vibrating region and the second vibrating region.
|Method for fabricating piezoelectric device|
A method for fabricating a piezoelectric device that includes a piezoelectric resonator to be mounted on a solder applied over a surface of a substrate. The piezoelectric resonator includes a metal case and at least a pair of lead terminals extracted from the metal case.
|Fetal monitoring device and method|
A fetal monitoring device includes a piezofilm sheet, a first electrode, and a second electrode. A controller is operably connected to the piezofilm sheet, first electrode, and second electrode and receives a biopotential and a piezofilm signal.
|Method for manufacturing ultrasound probe and ultrasound diagnostic imaging apparatus|
A method for manufacturing an ultrasound probe which includes a piezoelectric element for transmitting and receiving ultrasound waves and an acoustic matching layer provided by lamination of two or more matching materials on a front surface of the piezoelectric element, the method including forming at least one of the two or more matching materials from a thermosetting resin and a filler for adjusting an acoustic impedance; and bonding the two or more matching materials with an adhesive having a viscosity of 10 pa·s or less at 25° c.. .
|Device for loosening, insertion and removal of dental implants|
A device for inserting a threaded dental implant (i) in a patients jawbone as well as for loosening and removing a threaded dental implant (i) mounted and possibly osseointegrated in the alveolus jaw-bone of a patient. An ultrasonic vibration actuator, e.g.
|Intrinsic adaptive and autonomic piezotransformer circuits|
An intrinsic piezoelectric transformer circuit a piezoelectric transformer circuit is provided that has a primary side component including first and second electrodes, a secondary side component including first and second electrodes, and at least one tertiary component including first and second electrodes. A power bridge is provided which includes one or more switches, each switch has a gate terminal that is directly connected to the second electrode of the tertiary component of the piezoelectric transformer.
|Inkjet print head and method for manufacturing such print head|
A print head comprises a pressure chamber in fluid communication with a nozzle and an actuator structure in operative communication with the pressure chamber for generating a pressure wave in the pressure chamber. The actuator structure comprises a membrane, wherein a first surface of the membrane forms a flexible wall of the pressure chamber and a piezo actuator, wherein the piezo actuator is arranged on a second surface of the membrane, the second surface being opposite of the first surface, such that the membrane is deformed at the position of the piezo actuator upon actuation of the piezo actuator.
|Touch panel and method of forming the same|
A touch panel comprises a plurality of basic sensing-units arranged in a matrix. The basic sensing-unit comprises a pressure-sensing transistor and a selection transistor.
|Volume wave resonators on micromachined vertical structures|
A bulk wave piezoelectric resonator operating at a predetermined frequency includes a substrate block, having a plane face, a first thickness and consisting of a first material, a resonant plate having a length, width and second thickness, and consisting of a second piezoelectric material, first and second metal electrodes at least partly covering the resonant plate on each side and partly facing each other. The resonant plate is fixed perpendicularly in the vicinity of the plane face of the substrate block so that the width of the resonant plate and the first thickness of the substrate block have the same direction, and the first material, the second material, the first thickness of the block of substrate, the length, the width, the second thickness of the resonant plate are configured for trapping bulk waves at the operating frequency of the resonator and for producing a plane-plane type bulk wave piezoelectric resonator..
|Piezoelectric valve based on linear actuator|
A piezoelectric valve has a body with an input passage and an output passage each configured to connect to a fluid flow system, a flow control member movable with respect to the valve seat between a fully open position and a closed position and a piezoelectric motor directly connected to the flow control member. The piezoelectric motor has a piezoelectric resonator in which two orthogonal vibrational modes across a length and a width of the piezoelectric resonator are excited, a working element and one or more contact sites providing frictional contact between the working element and the piezoelectric resonator.
|Method of fabricating rare-earth element doped piezoelectric material with various amounts of dopants and a selected c-axis orientation|
A method of fabricating a rare-earth element doped piezoelectric material having a first component, a second component and the rare-earth element. The method includes: providing a substrate; initially flowing hydrogen over the substrate; after the initially flowing of the hydrogen over the substrate, flowing the first component to form the rare-earth element doped piezoelectric material over a surface of a single target, the target comprising the rare-earth metal in a certain atomic percentage; and sputtering the rare-earth element doped piezoelectric material from the target on the substrate..
|Multi-layer piezoelectric element, and piezoelectric actuator, injection device, and fuel injection system provided with the same|
There are provided a multi-layer piezoelectric element in which an increase of oxygen vacancies in an electric-field concentration part of piezoelectric layers is suppressed and a decrease of an amount of displacement is suppressed, as well as to provide a piezoelectric actuator, an injection device and a fuel injection system provided with the multi-layer piezoelectric element. A multi-layer piezoelectric element includes a stacked body composed of piezoelectric layers and internal electrode layers which are stacked on each other, and a resin which evolves oh− when being heated.
|Subcutaneous dialysis catheter with ultrasound agitation|
A subcutaneous, venous catheter is provided in conjunction with a method of installation in hemodialysis treatments. The catheter has an implantable hub attached to a first end of the primary lumen.
|Pressure sensing pad, method of making the same, pressure sensing system, and pressure map display|
A pressure sensing pad or mat comprises a piezoresistive layer, a top electrically conductive layer comprising a plurality of electrically conductive top strips extending in a first direction along one side of the piezoresistive layer, a bottom electrically conductive layer comprising a plurality of electrically conductive bottom strips extending in a second direction, nonparallel to the first direction, along the other side of the piezoresistive layer, and top and bottom adhesive layers holding the top and bottom strips against the piezoresistive layer so as to inhibit relative displacement of the strips relative to the piezoresistive layer and relative to each other. Also disclosed are a method of manufacturing the pressure sensor pad, a pressure sensing system that employs the a sensor mat, and a pressure map display for displaying a pressure distribution of an object resting on the pressure sensing mat..
|Micromachined ultra-miniature piezoresistive pressure sensor and method of fabrication of the same|
A method of fabrication of one or more ultra-miniature piezoresistive pressure sensors on silicon wafers is provided. The diaphragm of the piezoresistive pressure sensors is formed by fusion bonding.
|Pezoelectric sound element|
A piezoelectric sound generating element capable of providing flatter and less fluctuated sound pressure frequency characteristics includes a diaphragm that is formed in a circular plate shape with a circular profile. A piezoelectric element is affixed to the side of a bottom wall portion of the diaphragm.
|Piezoelectric vibrator, oscillator, electronic apparatus and radio controlled timepiece|
A piezoelectric vibrator is provided in which a piezoelectric vibrating piece is accommodated in a package, the piezoelectric vibrating piece including: a pair of vibrating arm sections; a base section to which each base end of the pair of vibrating arm sections is connected; and a support arm section that is connected to the base section between the pair of vibrating arm sections and extends from the base section to the same side as the vibrating arm sections, in which the piezoelectric vibrating piece is supported within the package in mount sections provided in the support arm section, and in which the mount sections are provided in a region which is defined between a position of which a distance from an end section of the base section opposite to the side where the support arm section is connected to the side of a leading end of the support arm section is 25% of a width dimension of the base section along the width direction and a position of which the distance is 65% of the width dimension.. .