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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


Electronic blood pressure meter

Electronic blood pressure meter

Backing element and ultrasound probe including same

Backing element and ultrasound probe including same

Date/App# patent app List of recent Piezoelectric-related patents
10/23/14
20140316506
 Portable device for treating insect bites and the like patent thumbnailPortable device for treating insect bites and the like
A portable device for treating the bites or stings of insects and harmful creatures, comprising a monolithic containing body made in a single piece and defining an internal housing space, a piezoelectric element configured for producing a predetermined difference in electrical potential, and an actuating element operable by a user and associated with said piezoelectric element to impart to the piezoelectric element a predetermined state of stress/deformation; the actuating element, the piezoelectric element and the discharge area are aligned along the operating axis. The monolithic containing body presenting a bottom part developing along the operating axis below a guide and housing portion, the bottom part defining part of the internal housing space with an overall span orthogonal to the operating axis which is constantly smaller than an overall span of the internal housing space defined by the guide and housing portion..
10/23/14
20140316290
 Electronic blood pressure meter patent thumbnailElectronic blood pressure meter
A blood pressure meter includes an adjustment unit that adjusts a pressure in a cuff by controlling a piezoelectric pump that uses a piezoelectric vibrator to supply fluid to the cuff, a driving control unit that gradually changes a cuff pressure by performing driving control on the adjustment unit, a pressure detection unit that detects the cuff pressure, a blood pressure determination unit that determines a blood pressure value, a circumferential length detection unit that detects a circumferential length of the measurement area, a battery that supplies power to various units, and a decrease detection unit that detects a voltage decrease value for the battery during blood pressure measurement. Based on the circumferential length and the voltage decrease value detected in an initial inflation period when the blood pressure measurement is first started, a range of the voltage decrease value during blood pressure measurement carried out thereafter is estimated..
10/23/14
20140316276
 Backing element and ultrasound probe including same patent thumbnailBacking element and ultrasound probe including same
The present disclosure in some embodiment provides a backing member for an ultrasonic probe that is disposed on a rear surface of a piezoelectric element constituting the ultrasonic probe to attenuate ultrasonic waves radiated from the rear surface of the piezoelectric element, the backing member including a mixture of a base member and a filler, wherein the base member is a polyurethane resin and the filler is manganese powder, whereby the backing member has appropriate sound absorption function and excellent dicing processability and provides an ultrasonic probe including the backing member.. .
10/23/14
20140315284
 Enhanced detection sensitivity with piezoelectric microcantilever sensors patent thumbnailEnhanced detection sensitivity with piezoelectric microcantilever sensors
A method for enhancing the detection sensitivity of a piezoelectric microcantilever sensor. The method may involve providing a piezoelectric microcantilever and inducing a change in the young's modulus during detection of a species of interest.
10/23/14
20140314255
 Acoustic generator patent thumbnailAcoustic generator
Provided is an acoustic generator which has a high sound pressure at ultrahigh frequencies and which can suppress occurrence of large peak dips. An acoustic generator includes a film, a frame member disposed on an outer peripheral edge of the film, a piezoelectric element disposed on the film and inside the frame member, and a resin layer filled inside the frame member so as to cover the piezoelectric element..
10/23/14
20140313264
 Method for manufacturing a fluid ejection device and fluid ejection device patent thumbnailMethod for manufacturing a fluid ejection device and fluid ejection device
A method for manufacturing a fluid ejection device, comprising the steps of: providing a first semiconductor body having a membrane layer and a piezoelectric actuator which extends over the membrane layer; forming a cavity underneath the membrane layer to form a suspended membrane; providing a second semiconductor body; making, in the second semiconductor body, an inlet through hole configured to form a supply channel of the fluid ejection device; providing a third semiconductor body; forming a recess in the third semiconductor body; forming an outlet channel through the third semiconductor body to form an ejection nozzle of the fluid ejection device; coupling the first semiconductor body with the third semiconductor body and the first semiconductor body with the second semiconductor body in such a way that the piezoelectric actuator is completely housed in the first recess, and the second recess forms an internal chamber of the fluid ejection device.. .
10/23/14
20140313262
 Liquid discharging device patent thumbnailLiquid discharging device
A liquid discharging device includes a pressure chamber made up of a space surrounded by a pair of side walls, a floor wall, and a ceiling wall; a substrate configured to make up at least one of the floor wall or ceiling wall; a liquid supplying unit configured to fill the pressure chamber with liquid; and an electrode having a pair of side walls made of piezoelectric elements, configured to apply voltage to the piezoelectric elements in order to shrink the volume of the pressure chamber by deforming the piezoelectric elements and to discharge liquid from the pressure chamber; wherein the tip side face portion of the piezoelectric element is restrained as to the substrate.. .
10/23/14
20140313253
 Ink-jet recording apparatus patent thumbnailInk-jet recording apparatus
To provide an ink jet recording apparatus in which the residual vibration of any ink can be prevented to avoid the spread of the ink at an opening portion and to perform the continuous discharge of the ink stably. An ink-jet recording apparatus includes a recording head including a pressure chamber and a nozzle, the pressure chamber containing ink, the nozzle communicating with the pressure chamber and having an opening portion formed therein to discharge the ink, a piezoelectric element forming part of the pressure chamber, and a driving signal producing section producing a driving signal to be input to the piezoelectric element to change the volume of the pressure chamber..
10/23/14
20140312993
 Method of fabricating multi-band filer module patent thumbnailMethod of fabricating multi-band filer module
A method of fabricating a multi-band filter module is provided. The method includes forming a film bulk acoustic resonator (fbar) on a piezoelectric substrate by forming a resonant part on the piezoelectric substrate and then an air gap recessed on a surface of the piezoelectric substrate and positioned under the resonant part; and forming a surface acoustic wave (saw) device on the piezoelectric substrate in which the steps of forming the fbar and the saw are concurrently performed..
10/23/14
20140312960
 Semiconductor device and operating method thereof patent thumbnailSemiconductor device and operating method thereof
A substrate including a plurality of transistors, and a piezoelectric formed to be contacted with the substrate. The piezoelectric is formed heat-expendably in a direction parallel to a gate direction of the transistors..
10/23/14
20140312742
Flexure-enhancing system for improved power generation in a wind-powered piezoelectric system
Improving wind-based piezoelectric power conversion is provided. For example, a piezoelectric element affixed to a vibratory member is provided.
10/23/14
20140312739
High temperature ultrasonic probe and pulse-echo probe mounting fixture for testing and blind alignment on steam pipes
A high temperature ultrasonic probe and a mounting fixture for attaching and aligning the probe to a steam pipe using blind alignment. The high temperature ultrasonic probe includes a piezoelectric transducer having a high temperature.
10/23/14
20140312358
Normally-off gallium nitride-based semiconductor devices
A method includes forming a relaxed layer in a semiconductor device. The method also includes forming a tensile layer over the relaxed layer, where the tensile layer has tensile stress.
10/23/14
20140311544
Power generator
A power generator includes layered-polymer piezoelectric element that is arranged on an object to be a heat source and a vibration source, and that generates electric power according to vibration transmitted from the object; a first heat conductor containing a flexible material that is arranged on the object, and that conducts heat from the object. The power generator includes a second heat conductor that is arranged on the first heat conductor and the layered-polymer piezoelectric element, and that conducts heat from the first heat conductor.
10/23/14
20140311249
Semiconductor pressure sensor, pressure sensor apparatus, electronic equipment, and method of manufacturing semiconductor pressure sensor
A semiconductor pressure sensor (720) includes a thin film piezoelectric element (701) which applies strain to a portion of a semiconductor substrate that corresponds to a thin region (402). The thin film piezoelectric element (701) is formed at a distance away from diffusion resistors (406, 408, 410, and 412) functioning as strain gauges and is extended to the proximity of a bonding pad (716a) connected to an upper electrode layer of the thin film piezoelectric element and a bonding pad (716f) connected to a lower electrode thereof.
10/23/14
20140311166
Cryocoolers with electronic cryostat flow controllers and related system and method
A system includes a cryocooler configured to cool an object, a sensor configured to measure a temperature of the object, and a controller configured to generate an actuator drive signal to control the cryocooler based on at least one temperature measurement from the sensor. The cryocooler includes a heat exchanger and a needle configured to control flow of coolant gas through the heat exchanger.
10/16/14
20140309562
Ultrasound transducer device and ultrasound medical apparatus
There is provided an ultrasound transducer device including a plurality of piezoelectric single-crystal plates that are stacked such that polarization components thereof are alternately inverted. The plurality of piezoelectric single-crystal plates are stacked such that directions thereof in which strain deformation in a direction orthogonal to a direction of voltage application from electrodes respectively interposed between the plurality of piezoelectric single-crystal plates becomes largest coincide with each other.
10/16/14
20140309541
Blood pressure measurement device and control method for blood pressure measurement device
A blood pressure measurement device determines an amplitude and a frequency of a voltage applied to a piezoelectric pump, carries out control so that a voltage at the determined amplitude and frequency is applied to the piezoelectric pump, and calculates a blood pressure value based on a detected cuff pressure during inflation when the cuff pressure is increased by the piezoelectric pump. A control frequency at which a pump efficiency of the piezoelectric pump is maximum in the case where the fluid is supplied to the cuff at a required flow rate during inflation using a predetermined voltage as the voltage is determined, and first control that applies a voltage at the amplitude of the predetermined voltage and at the determined control frequency is carried out.
10/16/14
20140307034
Liquid ejecting head, liquid ejecting apparatus, piezoelectric element and ultrasonic sensor
A liquid ejecting head includes a flow channel-forming substrate in which a pressure generating chamber that communicates with a nozzle opening is provided; and a piezoelectric element that includes a first electrode provided on one surface side of the flow channel-forming substrate corresponding to the pressure generating chamber, a piezoelectric layer provided on the first electrode, and a second electrode provided on the piezoelectric layer, in which the first electrode configures a separate electrode that is independent for each active portion that is a substantial driving portion of the piezoelectric element, the second electrode configures a common electrode shared with the active portion, the piezoelectric element extends up to the outer side of the pressure generating chamber in at least one end of the pressure generating chamber, and the piezoelectric element includes a weighting film provided to overlap to one end of the pressure generating chamber on the second electrode in a region extended up to the outer side of the pressure generating chamber, where (film thickness of weighting film×young's modulus)/(film thickness of piezoelectric layer×young's modulus) is in a range of 0.6 or higher and 1.2 or lower.. .
10/16/14
20140306904
Systems and methods for piezo-based haptic feedback
Systems and methods for piezo-based haptic feedback are disclosed. For example, one described apparatus for piezo-based haptic feedback includes a polymer matrix, and a piezoelectric actuator at least partially embedded within the polymer matrix, the piezoelectric actuator configured to output a haptic effect..
10/16/14
20140306581
Piezoelectric materials and methods of property control
Among other things, piezoelectric materials and methods of their manufacture are described; particularly methods of forming regions of varying crystal structure within a relaxor piezoelectric substrate. Such methods may including heating the piezoelectric substrate above the transition temperature and below the curie temperature such that a first phase transition occurs to a first crystal structure; rapidly cooling the piezoelectric substrate below the transition temperature at a cooling rate that is sufficiently high for the first crystal structure to persist; and applying an electric field through one or more selected regions of the piezoelectric substrate, such that within the one or more selected regions, a second phase transition occurs and results in a second crystal structure..
10/16/14
20140306577
Vibration generating apparatus
There is provided a vibration generating apparatus including: a bracket having a circular plate shape; a vibration member having a lower edge portion of a central portion fixed to the bracket and having a closed curved line shape; a piezoelectric element fixed to a lower surface of the vibration member among inner surfaces of the vibration member and deformed when power is applied thereto; and a mass body fixed to the inner surfaces of the vibration member and disposed to face the piezoelectric element.. .
10/16/14
20140306576
Surface vibration using compliant mechanical amplifier
A displacement amplifier receives an actuation displacement signal from a piezoelectric actuator. The displacement signal is amplified by one or more stages of compliant elements, and a corresponding force is applied to a load.
10/16/14
20140305996
Bonding apparatus
A bonding apparatus includes a bonding arm which has a receiving portion facing a center axis of a bonding tool; a pair of capillary holding portions in contact with the bonding tool; a pair of piezoelectric elements configured to generate an ultrasonic vibration in contact with the capillary holding portions; and a pressurizing device which has a pressurizing member arranged to face the receiving portion of the bonding arm and a moving device configured to move the pressurizing member toward the receiving portion of the bonding arm. The pressurizing member is moved in a state in which the pair of piezoelectric elements, the pair of capillary holding portions, and the bonding tool are placed between the receiving portion of the bonding arm to cause the bonding arm to hold the pair of capillary holding portion and the bonding tool..
10/16/14
20140305716
Miniature robot having multiple legs using piezo legs having two degrees of freedom
The present invention relates to a miniature robot using a plurality of piezo legs capable of deforming in two degrees of freedom by supplying input voltage signals, and an integrated artificial neural network behavior controller capable of modeling complex behavioral patterns and gait patterns by a simple structure. The miniature robot with multiple legs includes: a main body; a plurality of piezo legs constituted by bimorph piezoelectric elements and connected to the main body to generate motion through morphological deformation in two degrees of freedom by applied voltage signals, thereby resulting in movement on the ground; and a control part including an artificial neural network behavior controller, which controls motion patterns by feeding back information with respect to the environment transmitted from external sensors and to electrical signals transmitted when the piezo legs contact the surface of the ground, to control the voltage applied to each of the piezo legs..
10/16/14
20140305510
Automatic passive control of liquid positioning in microfluidic chips
A device for controlling liquid motion includes a substrate (10) of material having piezoelectric properties, and a system for controlling the motion of a quantity of liquid placed in contact with the substrate. The control system includes at least one interdigitated transducer (t1, t3, t5, t7), applied to the substrate (10) and designed for selectively generating a surface acoustic wave adapted to propagate on the substrate (10) and interact with the quantity of liquid.
10/16/14
20140305133
Dual channel accelerometer and method of manufacturing the same
Each of the first piezoelectric elements and the second piezoelectric elements are interleaved with one another, and are co-located with the seismic mass, the co-located first and second piezoelectric elements and the seismic mass being fastened to the supporting base by a rigid mechanical coupling. The interleaved first and second piezoelectric elements provide an improved first output channel to second output channel matching..
10/09/14
20140303688
Energy harvesting cochlear implant
The invention is related to a totally implantable cochlear implant having a transducer which is a piezoelectric vibration energy harvester to be mounted on the ossicular chain or the tympanic membrane to detect the frequency of oscillations and generate the required voltage to stimulate the relevant auditory nerves. The invention enables patients' continuous access to sound, since it eliminates the outside components of conventional cochlear implants.
10/09/14
20140301596
Screen sounder
A screen sounder includes a housing having a front case, a screen supported by the front case, a piezoelectric module mounted with the screen for driving the screen to generate sound or converting vibration of the screen into electric energy, an audio signal source electrically connecting to the piezoelectric module for driving the piezoelectric module to vibrate, a rechargeable module electrically connecting to the piezoelectric module for receiving the electric energy, and a switching control unit electrically connecting with the piezoelectric module for switching the electrical connections between the audio signal source, the rechargeable module and the piezoelectric module.. .
10/09/14
20140300901
Oct probe using pzt
An optical coherence tomography (oct) probe using lead zirconate titanate (pzt). In the oct probe using pzt, a sine wave is induced from a vibrator made of a piezoelectric element, so that an image in which the scanning range is increased can be captured due to the vibration of the vibrator.
10/09/14
20140300899
Ring laser gyro
A ring laser gyro with no piezoelectric elements for dither detection includes a laser beam receiving unit for receiving a laser beam taken out of a gyro block, a laser beam intensity measuring unit for measuring the intensity of the laser beam received by the laser beam receiving unit, a dither mechanism, a dither control unit for driving the dither mechanism, and a gyro case housing the gyro block, wherein the laser beam receiving unit is secured to the gyro case, the laser beam receiving unit has a laser beam receiving surface for receiving the laser beam from the gyro block to detect a laser beam receiving position on the laser beam receiving surface and output positional information indicating the laser beam receiving position. The dither control unit drives the dither mechanism on the basis of information indicating the amplitude of the laser beam receiving position obtained from the positional information..
10/09/14
20140300252
Resonating element, resonator, electronic device, electronic apparatus, moving vehicle and method of manufacturing resonating element
A piezoelectric resonating element includes a piezoelectric substrate having a rectangular vibrating portion and a thick-walled portion, excitation electrodes and, and lead electrodes. The thick-walled portion includes a fourth thick-walled portion, a third thick-walled portion, a first thick-walled portion, and a second thick-walled portion.
10/09/14
20140300251
Piezoelectric generating with location signaling
An apparatus including a piezoelectric convertor layer; at least one piezoresistive layer on the piezoelectric convertor layer; and electrical conductor outputs. The at least one piezoresistive layer includes a plurality of spaced apart piezoresistive electrodes.
10/09/14
20140300250
System for generating and distributing energy from piezoelectric materials
The invention relates to a system that generates energy from piezoelectric materials, applied mainly to supplying energy in traffic systems. The invention reduces the costs associated with the implementation of the piezoelectric systems on roads or vehicle and pedestrian transit systems, since in some cases they are manufactured in modules.
10/09/14
20140299840
Graphene laminate with band gap
A graphene laminate includes a first piezoelectric material layer having a negatively-charged surface and a positively-charged surface, a first graphene layer under the first piezoelectric material layer, the first graphene layer contacting the positively-charged surface of the first piezoelectric material layer, a second graphene layer underlying the first graphene layer, and a second piezoelectric material layer under the second graphene layer, the second piezoelectric material layer having a negatively-charged surface and a positively-charged surface, the negatively-charged surface contacting the second graphene layer.. .
10/09/14
20140298950
Slope-following precision drive
Apparatus, and a corresponding method for its operation, for precisely moving a movable rotor by urging a motor, such as a piezoelectric motor, into operative engagement with a circumferential rim-like portion of the rotor, with a radial preload force great enough to produce tangential motion in the rim-like portion and thereby to move the rotor in any desired manner and with very high precision. Possible damaging effects of the radial preload force are canceled by the introduction of an oppositely directed radial resistive force, such as by means of one or more pinch rollers positioned opposite the motor and also engaging the rim-like member.
10/09/14
20140298908
Vibration element, electronic device, electronic apparatus, and moving object
A vibration element includes a base section, a support arm extending from the base section, a driving vibration arm extending from the support arm in a direction intersecting with the extending direction of the support arm, a drive section provided to the driving vibration arm, and having a first electrode layer, a second electrode layer, and a first piezoelectric layer disposed between the first electrode layer and the second electrode layer, the first electrode layer being disposed on the driving vibration arm side, and a monitor section adapted to detect a vibration of the driving vibration arm, provided to the driving vibration arm, and having a third electrode layer, a fourth electrode layer, and a second piezoelectric layer disposed between the third electrode layer and the fourth electrode layer, the third electrode layer being disposed on the driving vibration arm side.. .
10/09/14
20140298897
High speed nano wear testing apparatus
The present invention is a nano wear testing apparatus, which preferably includes a linear motor, nano module assembly, piezoelectric member, load cell, tip mounting shaft, stage, and speaker coil. The linear motor preferably repositions the nano module assembly in close contact to the surface of a test sample, which is generally attached to the stage.
10/02/14
20140296895
Fluid ejection device and medical apparatus
A fluid ejection device which ejects a fluid includes: an ejection tube which ejects the fluid; a fluid chamber which communicates with the ejection tube; a piezoelectric element capable of changing a volume of the fluid chamber; a controller which controls a drive voltage applied to the piezoelectric element; and a fluid supplying unit which supplies the fluid to the fluid chamber at a predetermined flow rate. If a maximum frequency available to be set of the drive voltage is fmax [hz] and an amount of change in the volume of the fluid chamber when a maximum value available to be set of the drive voltage is applied to the piezoelectric element to drive the piezoelectric element is v1 [ml], the fluid supplying unit supplies the fluid at the predetermined flow rate above v1×fmax [ml/s]..
10/02/14
20140296892
Fluid ejection device and medical apparatus
A fluid ejection device which ejects a fluid includes: an ejection pipe having an opening to eject the fluid; a fluid chamber which communicates with the ejection pipe and changes in volume due to displacement of a piezoelectric element; a supply channel which communicates with the fluid chamber; an opening/closing unit which is provided on the supply channel and opens and closes the supply channel; a fluid supplying unit which pressurizes the fluid and supplies the fluid to the fluid chamber via the supply channel; and a voltage controller which applies a drive voltage to the piezoelectric element. The voltage controller controls the drive voltage applied to the piezoelectric element so that the drive voltage reaches a predetermined voltage after the supply channel is opened by the opening/closing unit..
10/02/14
20140296716
Ultrasonic transducer device, probe, electronic instrument, and ultrasonic diagnostic device
An ultrasonic transducer device includes a base, a first electrode film, a piezoelectric film, a second electrode film and a first conductive film. The base has a plurality of vibrating film portions arranged in an array pattern.
10/02/14
20140296715
Ultrasonic transducer device, probe, electronic instrument, and ultrasonic diagnostic device
An ultrasonic transducer device includes a base, a plurality of piezoelectric elements, a conductive body and an insulating film. The base has a plurality of vibrating film portions arranged in an array pattern.
10/02/14
20140295138
High performance textured piezoelectric ceramics and method for manufacturing same
A textured pmn-pzt ceramic is created using templated grain growth to align seed crystals in a ceramic matrix powder by tape-casting process. Heat treatment then results in the nucleation and growth of matrix crystals on aligned templates.
10/02/14
20140295064
Printhead with nanotips for nanoscale printing and manufacturing
A nanoprinthead including an array of nanotip cantilevers, where each nanotip cantilever includes a nanotip at an end of a cantilever, and a method for forming the nanoprinthead. Each nanotip may be individually addressable through use of an array of piezoelectric actuators.
10/02/14
20140295057
Anti-icing coating for power transmission lines
Provided are methods and systems for forming piezoelectric coatings on power line cables using sol-gel materials. A cable may be fed through a container with a sol-gel material having a piezoelectric material to form an uncured layer on the surface of the cable.
10/02/14
20140294024
Tunable device, method of manufacture, and method of tuning an electrical device
This description relates to an apparatus, a method of manufacturing, and a method of tuning optical and/or electrical parameters of semiconductor devices and materials, thin film materials, or other devices. In one example, a laser is tuned to produce an adjustable output wavelength by coupling the laser to a tuning material or base such as, for example, a piezoelectric base using a suitable attachment method.
10/02/14
20140293463
Linear ultrasonic motor and lens apparatus and image pickup apparatus using the same
A linear ultrasonic motor includes a vibrator having a piezoelectric element, a movable part applying a pressurization force to the vibrator and bringing the vibrator into pressurized contact with a base part, a cover part being fixed to the base part, a rolling part being rollably held between a movable guide part of the movable part and a cover guide part of the cover part, and a body to be driven having a transmission member that is pivotably supported and being able to move only in the movable direction. The transmission member includes a bias part that abuts on a transmission part of the movable part and applies a biasing force of biasing the movable part to the rolling part, to the transmission part.
10/02/14
20140293461
Drive device, lens barrel and imaging apparatus
A drive device includes a moving body having a driven portion with an engagement holding portion and an insertion portion, and an element holding portion holding an optical element; a piezoelectric driver having a piezoelectric element and a drive axis that moves the moving body while being inserted into the insertion portion; and a leaf spring being inserted into the insertion portion, being held by the moving body and urging the drive axis to the driven portion in a pressing direction. In a state in which the leaf spring is inserted into the insertion portion, the leaf spring is elastically deformed in the insertion portion by inserting the drive axis which is inserted into the insertion portion, and the drive axis is pressed against the driven portion by the leaf spring, while the leaf spring is engaged with the engagement holding portion and held by the moving body..
10/02/14
20140293155
Energy recovery system for recovering pressure energy of touch input to touch screen panel
Embodiments provide the energy recovery system capable of converting mechanical energy of a touch input to a touch screen panel into electrical energy and storing the converted electrical energy. The energy recovery system may include a touch screen panel including a piezoelectric material, an energy recovery device recovering electrical energy generated by the piezoelectric material, and an electrical energy storage device storing the recovered electrical energy..
10/02/14
20140292949
Liquid ejecting head and liquid ejecting apparatus
A piezoelectric layer is integrally formed in such a way that opening portions of a plurality of pressure chambers in a flow channel forming member are covered. In a region that corresponds to a position between adjacent pressure chambers in the piezoelectric layer, a hollow that penetrates the piezoelectric layer or that has a relatively thin thickness in the piezoelectric layer is formed along the sides of the opening of each of the pressure chambers.
10/02/14
20140292948
Liquid ejecting head, liquid ejecting apparatus, and piezoelectric element
A liquid ejecting head includes a piezoelectric element including a first electrode, a second electrode, and a piezoelectric layer between the first and the second electrodes. The piezoelectric layer includes a buffer layer disposed on the first electrode and containing bi and an element selected from al, si, cr, and mn and a complex oxide layer disposed on the buffer layer and having a perovskite structure containing bi, fe, ba, and ti..
10/02/14
20140292945
Liquid ejecting head, liquid ejecting apparatus, and method of manufacturing liquid ejecting head
Provided is a liquid ejecting head which ejects liquid from nozzle holes by changing a pressure in a liquid flow path in a pressure chamber. The liquid ejecting head includes a flow path member which is formed of ceramic, and in which the pressure chamber is formed; and a piezoelectric element which includes at least a first piezoelectric layer which is formed of ceramic.
10/02/14
20140292944
Liquid ejecting head and liquid ejecting apparatus
An ink jet type recording head includes a plurality of pressure generation chambers which are filled with ink, and piezoelectric elements which eject ink droplet through nozzle openings which are provided so as to correspond to each pressure generation chamber by applying pressure to the ink in each pressure generation chamber. The pressure generation chamber has a shape such that the piezoelectric element in the opposite side to a protrusion side in which at least a portion of the piezoelectric element protrudes out of the pressure generation chamber is deformed more easily than that in the protrusion side..
10/02/14
20140292941
Piezoelectric element module, ultrasonic transducer, ultrasonic device, liquid ejecting head, liquid ejecting apparatus, and piezoelectric element module manufacturing method
A first piezoelectric element having a first piezoelectric layer and a second piezoelectric element having a second piezoelectric layer, which is different from the first piezoelectric layer, are included on the same substrate. The first piezoelectric layer has a d constant greater than a d constant of the second piezoelectric layer..
10/02/14
20140292938
Liquid ejecting head module and liquid ejecting apparatus
A unit head has a head main body having a nozzle surface, and a substrate case having a fastening surface fastened to a fixation frame of a frame and accommodating a relay substrate. The fastening surface of a substrate case is formed at a position closer to a surface of an opposite side to a fixation frame than a side surface of a fastening surface side of the head main body, and the head main body is positioned further at an ink ejecting side than the fixation frame with the faster surface being fixed to the fixation frame, the other end of a first cable whose one end is connected to the electrode terminal of a piezoelectric element is connected to the relay substrate, a second cable connected to the relay substrate is drawn to an opposite side to a nozzle surface from a position close to a surface of an opposite side to the fastening surface, and the other end of the second cable is connected to a drive substrate..
10/02/14
20140292936
Liquid ejecting head and liquid ejecting apparatus
A flexible cable includes a portion that is covered by a solder resist and an exposed portion that is not covered by the solder resist, in which the exposed portion contains a wiring terminal and at least continues to a position closer to an outside than an opening of a wiring member insertion side of a wiring vacant portion in a state in which the wiring terminal portion is connected to an element terminal of a piezoelectric element side and in which the wiring vacant portion is filled with an electrically insulating filling material in a state of covering a joining portion between the element terminal and the wiring terminal within the wiring vacant portion, and in a state in which a protective substrate, which forms the wiring vacant portion by partitioning, and the exposed portion of the flexible cable are not in contact with one another.. .
10/02/14
20140292935
Liquid discharge apparatus, piezoelectric actuator, and method for producing liquid discharge apparatus
A liquid discharge apparatus includes a flow passage structure in which a liquid flow passage including a nozzle for discharging a liquid and a pressure chamber communicated with the nozzle, and a liquid sealing layer for covering the pressure chamber are formed; and a piezoelectric actuator which is arranged to contact with the liquid sealing layer of the flow passage structure. The piezoelectric actuator includes: an actuator substrate, which is arranged on a surface of the liquid sealing layer on a side opposite to the pressure chamber and which has a vibration layer and a columnar portion arranged between the liquid sealing layer and the vibration layer; and a piezoelectric portion which is formed as a film on a surface of the vibration layer disposed on a side opposite to the columnar portion..
10/02/14
20140292699
Touch type operation input device
A touch type operation input device capable of accurately detecting pressing force with which an operator presses is provided. The touch type operation input device includes a touch panel including a piezoelectric sensor and a touch sensor, and a pressing force detection unit.
10/02/14
20140292691
Display input device, image forming apparatus including the display input device, and method of controlling the display input device
A display input device includes a display portion for displaying screens, a touch panel portion for detecting a touch position, a recognition portion for recognizing the touch position based on an output of the touch panel portion, a plurality of piezoelectric elements disposed not to be visually recognized from outside, to form a plurality of piezoelectric element pairs each of which includes the elements opposed to each other in a short side direction of the touch panel portion, and a drive portion for supplying a drive signal having a predetermined voltage waveform to the piezoelectric elements one or more times so as to vibrate the piezoelectric elements and the touch panel portion, and so as to start to supply the drive signal to the piezoelectric element pairs at different timings.. .
10/02/14
20140292444
Elastic wave filter
An elastic wave filter includes an electrode finger group in an input side electrode and an electrode finger group in output side electrode each disposed in a taper shape such that elastic waves with mutually different wavelengths propagate on a piezoelectric substrate across from a track tr1 at a low frequency side of a passband to a track tr2 at a high frequency side of the passband. Assuming that a period length p is a wavelength of the elastic wave propagating on the piezoelectric substrate and constituted of a width dimension of the finger and a separation dimension between the adjacent electrode fingers, at least one of the input side idt electrode and the output side idt electrode includes a specific configuration..
10/02/14
20140292437
Resonator element, resonator, oscillator, electronic apparatus, and moving object
A resonator element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along a third outer edge.
10/02/14
20140292436
Vibration element, vibrator, oscillator, electronic apparatus, and moving object
A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge thereof, and a third thick section provided along a third outer edge thereof.
10/02/14
20140292434
Vibration element, vibrator, oscillator, electronic apparatus, and moving object
A vibration element includes a piezoelectric substrate including a vibrating section and a thick section having a thickness larger than that of the vibrating section. The thick section includes a first thick section provided along a first outer edge of the vibrating section, a second thick section provided along a second outer edge, and a third thick section provided along another first outer edge.
10/02/14
20140292277
Vehicle charging device
Disclosed is a vehicle charging device for generating electricity by applying pressure to a piezoelectric element through tire rotation by preparing the piezoelectric element in a tire portion of a vehicle. The vehicle charging device according to one embodiment of the present invention includes: an elastic part interposed between a wheel and a tire of the vehicle to be expansible in a radius direction of the wheel and the tire; and a piezoelectric element prepared at an end (or ends) of one side of both sides of the elastic part to generate power by receiving a pressure from the elastic part and connected to a battery of the vehicle to charge the battery with the generated power..
10/02/14
20140292161
Method for producing a piezoelectric multilayer component, piezoelectric multilayer component containing an auxiliary material, and use of an auxiliary material for setting the breaking stress of a piezoelectric multilayer component
Provision is made of a method for producing a piezoelectric multilayer component (1), in which piezoelectric green sheets, at least one ply (21) containing an auxiliary material having a first and a second component and layers (20) containing electrode material are arranged one above another alternately and sintered, wherein, during the sintering, the first and second components of the auxiliary material chemically react, and the at least one ply (21) containing the auxiliary material is degraded. In addition, provision is made of a piezoelectric multilayer component (1) comprising a plurality of alternating layers of electrode material (20) and piezoelectric ceramic and at least one layer (21) of auxiliary material having a breaking load which is reduced compared to the other layers of electrode material, wherein, in addition to the first and second components, the auxiliary material comprises a fifth component, which, at the preferred sintering temperatures for the piezoelectric material, in particular at most 1050° c., at most has a negligible sintering activity and does not react with the piezoelectric material used.
10/02/14
20140292160
Piezoelectric material, piezoelectric element, multilayered piezoelectric element, liquid ejection head, liquid ejection apparatus, ultrasonic motor, optical equipment, vibration apparatus, dust removing apparatus, imaging apparatus, and electronic equipment
Provided is a lead-free piezoelectric material having a satisfactory and stable piezoelectric constant and electric insulation property in a wide practical temperature range. Provided is a piezoelectric material, including a perovskite-type metal oxide represented by the following general formula (1) as a main component, the piezoelectric material containing mn in a content of 0.01 part by weight or more and 0.80 part by weight or less with respect to 100 parts by weight of the perovskite-type metal oxide: (liαxnaαykαzbaβbi0.5α+γ)a(tiα+βfeγ) o3 .
10/02/14
20140292159
Piezoelectric/electrostrictive element and method for manufacturing the same
A piezoelectric/electrostrictive element has a piezoelectric body, a through-hole electrode, a first electrode, a second electrode, a third electrode. The piezoelectric body includes a through-hole in communication with a first main surface and a second main surface.
10/02/14
20140292158
Laminated body and piezoelectric/electrostrictive element
A laminated body has a substrate and a metallic layer. The substrate is composed of an inorganic material.
10/02/14
20140292157
Piezoelectric/electrostrictive element
A piezoelectric/electrostrictive element has a piezoelectric body, a first electrode, a second electrode and a glass layer. The piezoelectric body is formed in a thin film-shape.
10/02/14
20140292156
Piezoelectric/electrostrictive element and wiring substrate
A piezoelectric/electrostrictive element includes a substrate, an adhesive layer, a first conductive layer, an anchor portion and a second conductive layer. The substrate contains a ceramic as a main component.
10/02/14
20140292155
Electro-acoustic transducer with periodic ferroelectric polarization produced on a micromachined vertical structure
A piezoelectric and ferroelectric bulk wave transducer operating at a predetermined frequency includes a block of substrate, having a first thickness and in a first material, and a piezoelectric and ferroelectric transduction plate, having a length, a width and a second thickness, and in a second piezoelectric material, first and second metal electrodes covering the plate in the direction of the length thereof. The plate has first and second ferroelectric domains with alternating polarizations, distributed along the length of the plate according to a periodic pattern of pitch.
10/02/14
20140292153
Temperature drift compensation of mems resonators
A resonator device comprising a piezoelectric material and at least one electrode, the device also provided with a material with a positive coefficient of stiffness, wherein the material is disposed in the device as an electrode or as a separate layer adjacent the piezoelectric material formed as one or more layers in the device. The material that performs the temperature compensating function is selected from the group consisting of ferromagnetic metal alloys, shape-memory metal alloys, and polymers, wherein the selected material has a temperature coefficient that varies with the relative amounts of the individual constituents of the compositions and wherein the composition is selected to provide the material with the positive coefficient of stiffness..
10/02/14
20140292152
Temperature compensating electrodes
A resonator device in which a piezoelectric material is disposed between two electrodes. At least one of the electrodes is formed of a nickel-titanium alloy having equal portions nickel and titanium..
10/02/14
20140292150
Temperature compensated acoustic resonator device having an interlayer
An acoustic resonator comprises: an acoustic resonator device comprises: a composite first electrode disposed over a substrate, the composite first electrode comprising: a first electrically conductive layer provided over the substrate; a first interlayer disposed on the first electrical conductive layer; a buried temperature compensation layer disposed over the first interlayer; a second interlayer disposed over the temperature compensation layer; a second electrically conductive layer disposed over the second interlayer, a piezoelectric layer disposed over the composite first electrode; and a second electrode disposed over the piezoelectric layer.. .
10/02/14
20140292149
Temperature compensated acoustic resonator device
An acoustic resonator device comprises: a substrate comprising a cavity or an acoustic mirror; a first electrode disposed over the substrate; a piezoelectric layer disposed over the first electrode; and a second electrode disposed over the piezoelectric layer. The first electrode or the second electrode, or both, are made of an electrically conductive material having a positive temperature coefficient..
10/02/14
20140292146
Piezoelectric vibration module
Disclosed herein is a piezoelectric vibration module capable of improving adhesion between a piezoelectric element and an external electrode disposed on the piezoelectric element, the piezoelectric vibration module, including: a piezoelectric element printing patterns of a first internal electrode and a second internal electrode therein and having a first external electrode electrically connected to the first internal electrode and a second external electrode electrically connected to the second internal electrode on an external surface thereof, wherein the first external electrode and the second external electrode are made of silver (ag) and are formed on the external surface of the piezoelectric element.. .


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

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