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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


Transducer and method for forming the same

Agency For ScienceTechnology And Research

Transducer and method for forming the same

Linear piezoelectric compressor

Technion Research & Development Foundation

Linear piezoelectric compressor

Date/App# patent app List of recent Piezo-related patents
05/28/15
20150148680
 Ultrasound probe patent thumbnailnew patent Ultrasound probe
The disclosed technology relates to ultrasound probes, and the purpose of the technology is to prevent a housing and housing members from cracking and to ensure safety. According to this technology, in an ultrasound probe (12) accommodating one or more elements that include at least a piezoelectric element (3) inside a housing (10), the housing is formed of a plurality of housing members mutually joined.
Konica Minolta, Inc.
05/28/15
20150147207
 Linear piezoelectric compressor patent thumbnailnew patent Linear piezoelectric compressor
A linear compressor employing a piezoelectric actuator operating in resonance at a frequency substantially below its natural resonant frequency, which is usually of the order of 10 khz. Low frequency resonance operation of the actuator, of the order of 100 hz., is achieved by incorporating the actuator and its housing with the moving compression piston, such that the moving mass is substantially increased, and by reduction of the effective piezoelectric stiffness using hydraulic amplification of the actuator displacement.
Technion Research & Development Foundation Ltd.
05/28/15
20150146895
 Electroactive sound transducer foil having a structured surface patent thumbnailnew patent Electroactive sound transducer foil having a structured surface
An electroactive sound transducer foil includes a composite foil made up of at least one carrier foil, at least one first and one second electrode, and at least one piezoelectric layer including an electroactive polymer, the surface of the sound transducer foil including a structuring having different slopes, and the slope of the sound transducer foil surface changing the sign at least twice.. .
Robert Bosch Gmbh
05/28/15
20150146892
 Electronic apparatus and panel unit patent thumbnailnew patent Electronic apparatus and panel unit
An electronic apparatus that generates a vibration sound by vibrating a panel and may operate in an excellent manner is provided. An electronic apparatus 1 according to the present invention includes a housing 60, a first piezoelectric element 30, a second piezoelectric element 31, and a panel 10 that is vibrated by the first piezoelectric element 30 and the second piezoelectric element 31 and generates the vibration sound to be transmitted through a part of a human body..
Kyocera Corporation
05/28/15
20150146750
 Method and  locking and scanning the output frequency from a laser cavity patent thumbnailnew patent Method and locking and scanning the output frequency from a laser cavity
A system and method that can be employed to lock and scan the output of a laser cavity (2) is described. The system and method involves the use of a signal generator for generating an error signal between an output of the laser cavity (28) and the transmission (28) of the laser through a tunable external reference cavity (3).
M Squared Lasers Limited
05/28/15
20150146747
 Method and  locking and scanning the output frequency from a laser cavity patent thumbnailnew patent Method and locking and scanning the output frequency from a laser cavity
A tunable reference cavity (3) with two independently controllable mirrors (15, 16) is disclosed. The mirrors are mounted on respective piezoelectric crystals (18, 19) so that thermal expansion of the piezoelectric crystals moves the cavity mirrors in the same direction along a longitudinal axis of the reference cavity thereby reducing a change of the cavity length.
M Squared Lasers Limited
05/28/15
20150146080
 Drive apparatus of vibration-type actuator, interchangeable lens, and image pickup apparatus using the same patent thumbnailnew patent Drive apparatus of vibration-type actuator, interchangeable lens, and image pickup apparatus using the same
When a vibration-type actuator is in a non-driving period, at least one of a voltage amplitude and a phase difference of an alternate signal applied to an electrode of a piezoelectric element is set to be equal to a minimum value or a maximum value of a dead zone in terms of the voltage amplitude or the phase difference.. .
Canon Kabushiki Kaisha
05/28/15
20150145927
 Inkjet head and inkjet apparatus having the same patent thumbnailnew patent Inkjet head and inkjet apparatus having the same
An inkjet head includes a substrate having plural ink inlet holes arranged along a first direction and plural ink outlet holes arranged generally along the first direction such that adjacent ink outlet holes are offset along the first direction, a plurality of partitioning walls made of piezoelectric material that define pressure chambers therebetween, each of the partitioning walls disposed on the substrate and generally extending in a second direction that crosses the first direction between the ink inlet holes and the ink outlet holes, and a nozzle plate disposed on the partitioning walls and having a plurality of nozzles, each of the nozzles being arranged on one of the pressure chambers.. .
Toshiba Tec Kabushiki Kaisha
05/28/15
20150145926
 Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element patent thumbnailnew patent Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element
Provided is a piezoelectric element comprising a first electrode; a piezoelectric body layer provided on the first electrode, the piezoelectric body layer including 50 mol % or more of at least bismuth and iron, and the piezoelectric body layer having a current-time curve obtained by applying a voltage to the first electrode and the second electrode including a plurality of inflection points; and a second electrode provided on the piezoelectric body layer.. .
Seiko Epson Corporation
05/28/15
20150145911
 Liquid ejecting apparatus patent thumbnailnew patent Liquid ejecting apparatus
A liquid ejecting apparatus includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, a coil that smooths the amplification modulation signal to generate a drive signal, a piezoelectric element that deforms when the drive signal is applied thereto, a cavity that expands or contracts due to deformation of the piezoelectric element, and a nozzle that communicates with the cavity and ejects a liquid in accordance with increase and decrease of a pressure inside the cavity. The coil is a metallic alloy type..
Seiko Epson Corporation
05/28/15
20150145910
new patent

Controlling density of dispensed printing material


A printing method includes controlling timing parameters for application of electrical pulses to a piezoelectric nozzle of an inkjet printing head so as to dispense droplets of a material from the nozzle. The timing parameters are controlled to introduce gas bubbles into the droplets of material so as to reduce the density of the material to a selected density value that is less than a natural density of the material..
Stratasys Ltd
05/28/15
20150145613
new patent

Piezoelectric oscillator


A piezoelectric oscillator includes a piezoelectric vibrating piece, an integrated circuit, and a package. The package includes a first layer, a second layer, a third layer, and a fourth layer.
Nihon Dempa Kogyo Co., Ltd.
05/28/15
20150145544
new patent

Pressure sensing and control for semiconductor wafer probing


A wafer probing system includes a probe card assembly having a plurality of individual probe structures configured make contact with a semiconductor wafer mounted on a motor driven wafer chuck, with each probe structure configured with a pressure sensing unit integrated therewith; and a controller configured to drive the probe card assembly with one or more piezoelectric driver units response to feedback from the pressure sensing units of the individual probe structures.. .
International Business Machines Corporation
05/28/15
20150145380
new patent

Piezoelectric actuator


There is provided a piezoelectric actuator including: a piezoelectric member having a multilayer structure; an external electrode formed on an outer surface of the piezoelectric member; and an intermediate electrode formed between layers of the piezoelectric members and having an area smaller than that of the external electrode.. .
Samsung Electro-mechanics Co., Ltd.
05/28/15
20150145379
new patent

Ultrasound vibration device, manufacturing ultrasound vibration device, and ultrasound medical apparatus


An ultrasound vibration device is provided with a stacked transducer in which a plurality of piezoelectric single crystal element layers are stacked between two metal blocks. Since each of the two metal blocks and the plurality of piezoelectric single crystal element layers is fusion-bonded relative to a stack direction by bonding metal having a melting point corresponding to half a curie point of the plurality of piezoelectric single crystal element layers or below, it is possible to use non-lead material, reduce a processing cost and realize inexpensiveness..
Olympus Corporation
05/28/15
20150145375
new patent

Piezoelectric power generation apparatus


A piezoelectric power generation apparatus that includes a first vibrating portion having a fixed end and a free end, a first weight portion bonded to the free end of the first vibrating portion, a second vibrating portion having a fixed end bonded to the first weight portion and a free end, and including a vibrating plate and a piezoelectric element provided on the vibrating plate. A second weight portion is bonded to the free end of the second weight portion.
Murata Manufacturing Co., Ltd.
05/28/15
20150145374
new patent

Transducer and forming the same


A transducer is provided, which includes a substrate, wherein a cavity is defined at least partially through the substrate, at least one stopper structure arranged within the cavity, a support layer arranged over the at least one stopper structure and the cavity to seal the cavity, and a piezoelectric functional arrangement arranged on the support layer. According to further embodiments of the present invention, a method for forming a transducer is also provided..
Agency For Science, Technology And Research
05/28/15
20150143919
new patent

Ultrasonic flow meter unit, and manufacturing ultrasonic flow meter unit


An ultrasonic flow meter unit, mounted to a fluid passage through which a measurement target fluid flows, comprises a pair of ultrasonic transducers each including a piezoelectric substrate, and an acoustic matching member; a measuring circuit which measures a flow of a target fluid based on time for which an ultrasonic pulse propagates between the pair of ultrasonic transducers; and an insulating damping member unitarily formed to cover at least a portion of each of a portion of each of the pair of ultrasonic transducers, which portion contacts the fluid passage, the piezoelectric substrate, and the measuring circuit.. .
Panasonic Intellectual Property Management Co., Ltd.
05/28/15
20150143914
new patent

Piezoelectric actuator module and mems sensor having the same


Embodiments of the invention provide a piezoelectric actuator module, which includes a multilayer part comprising a multilayer piezoelectric material part and an electrode part connected to the multilayer piezoelectric material part, and a support layer coupled with the multilayer part. The piezoelectric actuator module further includes a support part displaceably supporting the support layer.
Samsung Electro-mechanics Co., Ltd.
05/28/15
20150143911
new patent

Physical/chemical sensor and measuring specific substance


A physical/chemical sensor has a movable membrane (3) having a diaphragm structure provided to form a hollow section (2) between the movable membrane (3) and a light receiving surface of a light receiving element (1), a first piezoelectric membrane (4) that is provided on a front-side surface or a backside surface of the movable membrane (3) and that excites the movable membrane (3), and a second piezoelectric membrane (5) that is provided on the front-side surface or the backside surface of the movable membrane (3) and that senses a voltage caused by oscillation of the movable membrane (3). A measuring method using the physical/chemical sensor applies a voltage to the first piezoelectric membrane (4) while changing frequency and senses resonance frequency by sensing a voltage outputted from the second piezoelectric membrane (5)..
05/21/15
20150142358

Rapid interrogation elastic wave resonant devices


A method for interrogating an elastic wave device includes probing the response of a piezoelectric resonant device at a single frequency alternately on either side of a previously determined first resonance frequency, to characterize this resonance frequency characteristic of the measured physical quantity, by correlating this single measurement with a previously performed measurement.. .
Senseor
05/21/15
20150142342

Method and device for sensing isotropic stress and providing a compensation for the piezo-hall effect


A method determines isotropic stress by means of a hall element which includes a plate-shaped area made of a doped semiconductor material and comprises four contacts contacting the plate-shaped area and forming corners of a quadrangle, two neighboring corners of the quadrangle defining an edge thereof. At least one van der pauw transresistance value in at least one van der pauw measurement set-up of the hall element is determined, wherein the four contacts of the hall element form contact pairs, a contact pair comprising two contacts defining neighbouring corners of the quadrangle.
Melexis Technologies Nv
05/21/15
20150142295

Monitoring monitoring a fuel injector of an internal combustion engine of a vehicle


Disclosed is a method for monitoring a fuel injector, the injector including a piezoelectric actuator controlling a valve unit to open or close the injector, the fuel injector including an actuator play. The method includes: measuring a plurality of compensation times of the actuator play during a simulation step preceding an injection for a given plurality of fuel pressures; calculating a parameter representing the current actuator play per the measured compensation times; comparing the parameter representing the calculated current actuator play with a predetermined reference parameter of the actuator play; and transmitting a warning message if the reference parameter is exceeded; the parameter representative of the current actuator play being calculated on the basis of a polynomial function of the measured compensation times.
Continental Automotive Gmbh
05/21/15
20150141976

Ultrasonic anastomosis instrument with piezoelectric sealing head


An apparatus includes a body, a shaft, an ultrasonic element, and an annular clamp pad. The shaft extends distally from the body.
Ethicon Endo-surgery, Inc.
05/21/15
20150141834

Piezoelectric composition and producing same, piezoelectric element/non-lead piezoelectric element and producing same, ultrasonic probe and diagnostic imaging device


The present invention is a piezoelectric composition and a piezoelectric element using the piezoelectric composition, the composition being characterized by: having a perovskite structure represented by general formula abo3; being represented by composition formula x(bi0.5k0.5)tio3-ybi(mg0.5ti0.5)o3-zbifeo3, x+y+z=1 in the composition formula above; and in a triangular coordinate using x, y and z in the composition formula above, having a composition represented by a region which is surrounded by a pentagon abcde with apexes of point a (1, 0, 0), point b (0.7, 0.3, 0), point c (0.1, 0.3, 0.6), point d (0.1, 0.1, 0.8) and point e (0.2, 0, 0.8) and which does not include the line segment ae that connects point a (1, 0, 0) and point e (0.2, 0, 0.8).. .
Konica Minolta, Inc.
05/21/15
20150141833

Catheter device implementing high frequency, contrast imaging ultrasound transducer, and associated method


An imaging catheter system is provided, including a hollow lumen having a distal portion, and a plurality of first transducer elements arranged in a first array configured to be received within the distal portion of the hollow lumen. Each of the first transducer elements include a micromachined piezocomposite, and the plurality of first transducer elements is configured to operate at an effective operational frequency of greater than about 30 mhz.
North Carolina State University
05/21/15
20150141827

Ultrasonic device, manufacturing the same, electronic device and ultrasonic imaging device


An ultrasonic device includes a substrate having a first opening, a second opening and a wall part partitioning the first opening and the second opening; a first vibration film and a second vibration film which close the first opening and the second opening respectively; a first piezoelectric element and a second piezoelectric element which are formed on surfaces of the first vibration film and the second vibration film opposite to the substrate; an acoustic matching layer which is disposed within the first opening and the second opening so as to come into contact with the first vibration film and the second vibration film.. .
Seiko Epson Corporation
05/21/15
20150140545

Actuation of parallel microfluidic arrays


An improved actuator for use in a microfluidic particle sorting system utilizes a staggered packing scheme for a plurality of actuators used to selectively deflect a particle in an associated sorting channel from a stream of channels. An actuator block may be provided for housing a two-dimensional array of actuators, each configured to align with an actuation port in an associated sorting chip containing a plurality of sorting channels.
Cytonome/st, Llc
05/21/15
20150139457

Speaker device and electronic device


A speaker device (100) includes a circuit board (10), a piezoelectric element (20), a spacer (30) which is disposed between the piezoelectric element (20) and the circuit board (10), and an air chamber (40). The spacer (30) fixes the piezoelectric element (20) to the circuit board (10) so that an internal space (31) is formed between the piezoelectric element (20) and the circuit board (10).
Nec Casio Mobile Communications, Ltd.
05/21/15
20150139456

Acoustic generator, acoustic generation device, and electronic device


A purpose is to obtain a frequency characteristic of a good sound pressure. To achieve the purpose, an acoustic generator according to an embodiment includes a piezoelectric element (exciter), a flat vibrating body, and a resin layer.
Kyocera Corporation
05/21/15
20150138920

Modulated echo underwater communications and energy harvesting


A system is provided that includes a gateway node and terminal node. The gateway node may be configured to produce a continuous acoustic wave for propagation through a fluid such as water, and detect an echo thereof.
The Boeing Company
05/21/15
20150138669

Head gimbal assembly and disk unit provided with the same


A head gimbal assembly includes a load beam, a wiring member including a metal plate disposed on the load beam, a magnetic head attached to a tip section of the wiring member, and a piezoelectric element that is fixed to and supported by supporting pads and deforms in response to a voltage applied thereto. The metal plate includes a tip section to which the magnetic head is fixed, and a base section that is spaced apart from the tip section and is fixed to the load beam.
Kabushiki Kaisha Toshiba
05/21/15
20150138556

Monitoring devices with energy-harvesting power sources


An apparatus worn by a subject includes an energy-harvesting power source, at least one physiological sensor and/or at least one environmental sensor coupled to the energy-harvesting power source. The at least one physiological sensor senses physiological information from the subject and the at least one environmental sensor senses environmental information in a vicinity of the subject.
Valencell, Inc.
05/21/15
20150138296

Dynamic adjustable focus for led writing bars using piezoelectric stacks


According to aspects of the embodiments, there is provided methods of dynamically focusing an led print bar or printhead using piezoelectric stacks. The stack is mounted on either end of the led bar to adjust the focus of the bar against the photoreceptor surface.
Xerox Corporation
05/21/15
20150138281

Piezoelectric element, liquid ejecting head, liquid ejecting apparatus, ultrasonic sensor, piezoelectric motor, and power generating apparatus


A piezoelectric element includes: a first electrode; a piezoelectric body layer which is provided on the first electrode; and a second electrode which is provided on the piezoelectric body layer, the piezoelectric body layer is made of a composite oxide with a perovskite structure, which contains bismuth, barium, iron, titanium, and strontium, and the content of strontium with respect to barium is equal to or greater than 5 mol % and equal to or less than 18 mol %.. .
Seiko Epson Corporation
05/21/15
20150138276

Piezoelectric actuator and making a piezoelectric actuator


In one example, a piezoelectric actuator includes a piezoelectric material, a first conductor on a first part of the piezoelectric material, and a membrane bonded to the first conductor with an adhesive. The first conductor has a root mean square surface roughness of at least 10 nm at the bonding interface with the membrane..
Hewlett-packard Development Company, L.p.
05/21/15
20150138267

Liquid ejecting apparatus and head unit


A liquid ejecting apparatus includes an original drive signal generation section that generates an original drive signal, a signal modulation section that modulates the original drive signal and generates a modulation signal, a signal amplification section that amplifies the modulation signal and generates an amplification modulation signal, a signal conversion section that converts the amplification modulation signal into a drive signal, a piezoelectric element that deforms by the drive signal, a cavity that expands or contracts due to deformation of the piezoelectric element, a nozzle that communicates with the cavity and ejects a liquid in response to increase and decrease of a pressure inside the cavity, and a temperature detection section that detects a temperature of the signal conversion section.. .
Seiko Epson Corporation
05/21/15
20150138265

Liquid discharge apparatus


A liquid discharge apparatus includes: a channel unit including: a discharge port; a first channel through which liquid to be supplied to the discharge port flows; and a second channel communicated with the first channel and the discharge port; an actuator including a first and second electrodes and a piezoelectric layer, and being configured to apply pressure to the liquid in the second channel; and a signal supply unit configured to selectively supply a discharge driving signal and a non-discharge driving signal to the actuator. The discharge driving signal includes a first voltage signal which drives the actuator to discharge the liquid from the discharge port, and the non-discharge driving signal includes a plurality of second voltage signals each of which drives the actuator not to discharge the liquid from the discharge port..
Brother Kogyo Kabushiki Kaisha


Popular terms: [SEARCH]

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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