Follow us on Twitter
twitter icon@FreshPatents

Piezo patents

Bulk PDF Downloads
      

This page is updated frequently with new Piezo-related patent applications.




 Transducer system patent thumbnailnew patent Transducer system
A transducer system including a panel having one or more piezo-electric enabled foils and an arrangement of electric contacts coupled to the panel and configured to define a plurality of transducers thereon. Each transducer is associated with a respective region of the panel and with at least two electric contacts that are coupled to at least two zones at that respective region of the panel.
Noveto Systems Ltd.


 Piezoelectric speaker driving device patent thumbnailnew patent Piezoelectric speaker driving device
A piezoelectric speaker driving device includes a driving amplification unit, a signal tuning unit, and a piezoelectric speaker; wherein, the driving amplification unit is configured to amplify a signal source, and transmit an amplified signal to the signal tuning unit; the signal tuning unit is configured to filter the amplified signal to filter out a high-frequency noise, and regulate an impedance characteristic of the piezoelectric ceramic to increase a load impedance of a high-frequency part of the driving circuit so as to reduce the driving current of the high-frequency part, and transmit the regulated driving signal to the piezoelectric speaker to drive the piezoelectric speaker. Wherein, the signal tuning unit may include a low-pass filtering circuit and a regulation impedance..
Zte Corporation


 Piezoelectric ceramic dual-band bass-enhanced earpiece patent thumbnailnew patent Piezoelectric ceramic dual-band bass-enhanced earpiece
A piezoelectric ceramic dual-band bass-enhanced earpiece includes an earphone shell, a moving coil speaker assembly and a piezoelectric ceramic speaker component. The earphone shell includes an acoustic output orifice.
Jetvox Acoustic Corp.


 Elastic wave device patent thumbnailnew patent Elastic wave device
An elastic wave device includes a multilayer film provided on a support substrate and including a piezoelectric thin film and a layer other than the piezoelectric thin film, an interdigital transducer electrode provided on one surface of the piezoelectric thin film, and an external connection terminal electrically connected to the interdigital transducer electrode. In a plan view, the multilayer film is partially absent or omitted in a region outside a region where the interdigital transducer electrode is provided, and the elastic wave device further includes a first insulating layer provided on the support substrate in at least a portion of a region where the multilayer film is absent or omitted..
Murata Manufacturing Co., Ltd.


 Converter for converting energy to be recovered and electricity generator patent thumbnailnew patent Converter for converting energy to be recovered and electricity generator
A converter for converting a variation in energy to be recovered, the converter including: a transducer layer extending essentially parallel to a reference plane and configured to transform the variation in the energy to be recovered into a mechanical deformation, the transducer layer comprising: a plurality of first blocks made from a magnetostrictive or shape-memory material, the first blocks being delimited in relation to one another by side edges, and regions that do not contain the material of the first block, the regions being inserted between the side edges of the first blocks; and a piezoelectric layer secured to the transducer layer. Each of the first blocks has a preferential axis of deformation parallel to the reference plane..
Centre National De La Recherche Scientifique


 Converter for converting a variation in energy to be recovered into a potential difference patent thumbnailnew patent Converter for converting a variation in energy to be recovered into a potential difference
A converter including a first transducer that can lengthen inside at least a first deformation zone and simultaneously shrink inside at least a different second deformation zone. Inner faces of second and third electromechanical transducers are secured respectively, with no degree of freedom, substantially to the first and second deformation zones of the layer of the first transducer.
Institut Polytechnique De Grenoble


 Piezoelectric element, piezoelectric element applying device, and manufacturing  piezoelectric element patent thumbnailnew patent Piezoelectric element, piezoelectric element applying device, and manufacturing piezoelectric element
(kx, na1-x)nbo3   (1). .

 Process for manufacturing a pyroelectric and/or piezoelectric drive patent thumbnailnew patent Process for manufacturing a pyroelectric and/or piezoelectric drive
A process for manufacturing a piezoelectric and/or pyroelectric device comprising a polyvinylidene fluoride film, the process comprising a step of forming at least one portion of a layer of a solution comprising a solvent and a compound comprising polyvinylidene fluoride and a step of irradiating the portion with pulses of at least one ultraviolet radiation. The irradiating step enables the formation of at least two β crystalline phases having different orientations..
Commissariat à I'Énergie Atomique Et Aux Énergies Alternatives


 Electronic device, and manufacturing  electronic device patent thumbnailnew patent Electronic device, and manufacturing electronic device
An electronic device includes a drive substrate (a pressure chamber substrate and a vibration plate) including a piezoelectric element and electrode wirings related to driving of the piezoelectric element formed thereon, and a sealing plate bonded thereto, the electrode wirings are made of wiring metal containing gold (au) on the drive substrate through an adhesion layer which is a base layer, and has a removed portion in which a portion of the wiring metal in a region containing a part bonded to a bonding resin is removed and the adhesion layer is exposed.. .
Seiko Epson Corporation


 A device for converting a movement of a user into a voltage patent thumbnailnew patent A device for converting a movement of a user into a voltage
A device (10) for converting a movement of a user into a voltage comprises a neck cord (20), a piezoelectric sensor (30) and a printed circuit board (40). The neck cord is coupled to the piezoelectric sensor and provides in use a pulling force that acts on the piezoelectric sensor in a first direction.
Koninklijke Philips N.v.


new patent

Pressure sensor for touch panel


Provided is a pressure sensor for a touch panel, including a signal input member configured to have conductors patterned thereon in an interdigitated form on a substrate, a spacer disposed at a corner where the conductor patterns are not formed on the substrate of the signal input member, and a piezo film disposed over the spacer, spaced apart from the signal input member, and configured to have a resistance value varied depending on the amount of pressure applied to the piezo film, wherein an interval between the conductor patterns formed in the signal input member and disposed close to the spacer is smaller than an interval between the conductor patterns formed in the signal input member and disposed at the farthest place from the spacer.. .
Naoplus Co., Ltd.


new patent

Method for manufacturing rectangular parallelepiped-shaped single crystal, rectangular parallelepiped-shaped single crystal, manufacturing ceramics, ceramics, piezoelectric element, piezoelectric device, and electronic device


This invention is a method for manufacturing a rectangular parallelepiped-shaped single crystal containing sodium niobate of a perovskite structure as the main component, and the method includes a process of heating a mixture 1 of bismuth sodium niobate which is formed from particles containing a plurality of crystals represented by general formula (1): bi2.5nam−1.5nbmo3m+3 (m is an integer of 2 or more) and in which an average value ma of the m values is larger than 6 and sodium containing alkali metal halide at 1200° c. Or more and 1250° c.
Canon Kabushiki Kaisha


new patent

Head and liquid ejecting apparatus


Provided is a head including a channel formation substrate that is provided with a pressure generating chamber which communicates with a nozzle for ejecting a liquid; a piezo element that includes a first electrode which is provided on one surface side of a channel formation substrate, a piezoelectric layer which is provided on the first electrode, and a second electrode which is provided on the piezoelectric layer; and a driving circuit board that is bonded to the one surface side of the channel formation substrate via an adhesive layer, and is provided with a driving circuit for driving the piezo element, in which the piezo element and the driving circuit are electrically connected to each other via a bump which is provided on any one of the channel formation substrate and the driving circuit board, and in which the bump and the adhesive layer are provided above the piezoelectric layer of the piezo element.. .
Seiko Epson Corporation


new patent

Electronic device, and manufacturing electronic device


An electronic device includes a first drive substrate (a pressure chamber substrate and a vibration plate) including a piezoelectric element formed thereon, and a second substrate (a sealing plate) bonded to the first drive substrate, a bonding resin forms an accommodating space that surrounds and accommodates a drive region of the piezoelectric element between the first substrate and the second substrate, and a reinforced resin that supports the first substrate and the second substrate in a position deviated from the drive region in the accommodating space.. .
Seiko Epson Corporation


new patent

Droplet discharging apparatus, controlling droplet discharging apparatus and image forming apparatus including droplet discharging apparatus


A droplet discharging apparatus includes a recording head that includes pressure chambers, piezoelectric elements, and an in-head reservoir, provided near the pressure chambers; a liquid circulation unit that includes a liquid reservoir and circulates liquid between the in-head reservoir and the liquid reservoir; a drive waveform generation unit that generates a drive waveform that drives each of the piezoelectric elements; a remaining oscillation detection unit that detects remaining oscillation generated in at least one of the pressure chambers after driving the respective piezoelectric element; a status determining unit that determines a sedimentation status of a component in liquid in the in-head reservoir based on the detected remaining oscillation; and a control unit that controls a liquid circulation operation of the liquid circulation unit in order to dissolve the sedimentation status of the component in the liquid in the in-head reservoir based on the determined sedimentation status.. .
Ricoh Company, Ltd.


new patent

Liquid ejecting apparatus, drive circuit, and head unit


A liquid ejecting apparatus includes a power supply unit that boosts a single voltage and includes multiple voltage boosting circuits which generate power supply voltages different from each other; a drive circuit that amplifies an original drive signal based on a power supply voltage which is generated by at least one of the multiple voltage boosting circuits and generates a drive signal that is applied; and an ejecting unit that includes a piezoelectric element which becomes displaced in accordance with the drive signal, in which the power supply unit controls the voltage boosting circuit, which generates the power supply voltage that is not used for amplification, to stop voltage boosting.. .
Seiko Epson Corporation


new patent

Ultrasonic transmitter


The head (2) is movable within the transmitter (1), which includes biasing element (4, 5, 50) suitable for urging the head (2) and the piezoelectric element (3) so as to maintain their mutual contact during repeated dimensional changes of the piezoelectric element (3).. .

new patent

Suction device


Provided is a suction device that can suppress sound and vibration during use. A suction device includes a flow-passage forming section (1) having a suction port (20) from which fluid is sucked, a discharge port (29) from which the fluid is discharged, and a flow passage (2) which is sealed from an outside except at the suction port (20) and the discharge port (29) and through which the fluid flows, and a piezoelectric driving part (33) that generates a flow of the fluid in the flow passage (2).
Murata Manufacturing Co., Ltd.


new patent

Sensor device for detecting displacements of human's body surface accompanying respiration


In a sensor device which detects pressure variations owing to displacements of a body surface of a subject by respiration through variations of the output impedance of a piezoelectric vibrator, the pressure variations can be more efficiently transmitted to the piezoelectric vibrator. The sensor device, attached to a subject's body surface, comprises a contact piece contacting the body surface; a displacement-signal convertor which converts the displacements of the body surface into electrical signals; and an outputting device which outputs the electrical signals to an external unit; the sensor device is clamped between the body surface of the subject and an upper edge portion of a subject's bottom garment, and the contact piece is arranged in one side surface of a housing, and a stopping member which can be attached with the upper edge portion of the bottom garment in the other side surface of the housing..

Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.
new patent

Sensor device for detecting displacements of human's body surface accompanying respiration


In a sensor device which detects pressure variations owing to displacements of a body surface of a subject by respiration through variations of the output impedance of a piezoelectric vibrator, the pressure variations owing to displacements can be more efficiently transmitted to the piezoelectric vibrator. The sensor device, attached to a subject's body surface and detecting displacements of the body surface accompanying respiration of the subject, comprises a contact piece having a contact surface which contacts the body surface when the sensor device is attached to the body surface; a displacement-signal convertor which is connected with the contact piece and converts the displacements of the body surface into electrical signals; and an outputting device which outputs the electrical signals to an external unit; wherein the contact surface of the contact piece is a curved surface projecting outward in a direction from its periphery to its center..

Parametric in-ear impedance matching device


An ultrasonic audio transducer system includes an ultrasonic speaker. The ultrasonic speaker may be an electrostatic emitter, a piezoelectric emitter (single crystal or stack), a piezoelectric film emitter, or any other emitter capable of emitting ultrasound.
Turtle Beach Corporation


Handheld device


A handheld device is disclosed. A housing member includes a first surface and a second surface.
Kyocera Corporation


Parametric in-ear impedance matching device


An ultrasonic audio transducer system includes an ultrasonic speaker. The ultrasonic speaker may be an electrostatic emitter, a piezoelectric emitter (single crystal or stack), a piezoelectric film emitter, or any other emitter capable of emitting ultrasound.
Turtle Beach Corporation


Tunable q resonator


A tunable q resonator using a capacitive-piezoelectric transducer provides a flexible top electrode above an aln resonator. The top electrode can be pulled electrostatically towards the resonator and substrate, forming a frictional contact with either the resonator or the combined resonator-electrode structure to the substrate, allowing for electrical tuning the q of the resonator.
The Regents Of The University Of California


Piezoelectric vibrating piece and piezoelectric vibrator


A pair of vibrating arm portions are disposed lined up in a second direction perpendicular to a first direction and are configured such that base end sides thereof in the first direction are fixed to a base portion. A pair of inclined surfaces are formed on both sides in the second direction on the base end side of the vibrating arm portion so that a width of the vibrating arm portion in the second direction is gradually widened from the distal end side to the base end side.
Sii Crystal Technology Inc.


Power generation device for mobile body


A power generation device for a mobile body includes power generating units and a holding member. Each power generating unit includes an elastically deformable base member and a piezoelectric film, which are laminated alternately.
National University Corporation Hiroshima Universi Ty


System for converting mechanical and/or thermal energy into electrical power


A system for converting energy, comprising a first device comprising a deformable enclosure containing thermo-reactive molecules suitable for deforming the enclosure when their temperature exceeds a threshold temperature, and a second pyroelectric and/or piezoelectric device making contact with the enclosure.. .
Commissariat à L'Énergie Atomique Et Aux Énergies Alternatives


Converter for converting energy to be recovered and electricity generator


A converter including a transducer layer which moves anchoring points to deform a piezoelectric diaphragm by bending. The converter includes a rigid arm between each anchoring point and a point for securing to the piezoelectric diaphragm to which it is attached, the rigid arm being tensioned between the anchoring point and the securing point and configured to transform movement of the anchoring points into a movement that deforms the piezoelectric diaphragm between bent and less bent positions.
Commissariat À L'Énergie Atomique Et Aux Énergies Alternatives


Micro stage using piezo elements


Disclosed herein is a micro stage using a piezoelectric element that can be reliably operated even in a vacuum environment. In a particle column requiring a high precision, for example, a microelectronic column, the micro stage can be used as a stage with micro or nano degree precision for alignment of parts of the column, or for moving a sample, and so on..

Driving device


A driving device that causes a movable body to move stably with minimal backward movement. The driving device includes a plate-shaped driving unit with an elastic body and a piezoelectric element joined to a main surface of the elastic body.
Murata Manufacturing Co., Ltd.


Piezoelectric energy harvesting device and fabricating the same


A flexible piezoelectric energy harvesting device includes a first flexible electrode substrate, a piezoelectric layer disposed on the first flexible electrode substrate, and a second flexible electrode substrate disposed on the piezoelectric layer. The piezoelectric layer may include a plurality of first piezoelectric lines spaced apart from each other in one direction and a plurality of second piezoelectric lines respectively filling spaces between the first piezoelectric lines..
Electronics And Telecommunications Research Institute


Piezoelectronic switch device for rf applications


A piezoelectronic switch device for radio frequency (rf) applications includes a piezoelectric (pe) material layer and a piezoresistive (pr) material layer separated from one another by at least one electrode, wherein an electrical resistance of the pr material layer is dependent upon an applied voltage across the pe material layer by way of an applied pressure to the pr material layer by the pe material layer; and a conductive, high yield material (c-hym) comprising a housing that surrounds the pe material layer, the pr material layer and the at least one electrode, the c-hym configured to mechanically transmit a displacement of the pe material layer to the pr material layer such that applied voltage across the pe material layer causes an expansion thereof and an increase the applied pressure to the pr material layer, thereby causing a decrease in the electrical resistance of the pr material layer.. .
International Business Machines Corporation


Sound-absorbing material


A sound-absorbing material has a membrane having multiple piezoelectric fibers, the fiber density of the membrane is below 50 g/m2, the thickness of the membrane is below 1 mm, sound-absorbing coefficient of the membrane is larger than 0.1 at absorbing frequency at 100 hz+/-10%, and the sound-absorbing coefficient of the membrane is over 0.05 at absorbing frequency at 800 hz to 1000 hz. Pvdf electrospinning nanofiber membranes of the present invention are thinner and more flexible compared to conventional sound-absorbing material, the membranes in the present invention performs excellent low frequency sound absorption with very thin membrane..
National Taiwan University Of Science And Technology


Semiconductor pressure sensor


A semiconductor pressure sensor for measuring an external pressure exerted on the sensor, comprises a membrane, and a bridge comprising a first and a second resistor pair, arranged on a first resp. Second side portion of the membrane.
Melexis Technologies Nv


Refrigeration through voltage-controlled entropy change


A method for refrigeration through voltage-controlled entropy change includes applying a voltage signal to a piezoelectric material to generate strain in the piezoelectric material, generating strain in a magnetic material attached to the piezoelectric material, and generating a change in a temperature of the magnetic material in response to the strain in the magnetic material.. .
Nutech Ventures


Mems transducer and manufacturing the same


A mems transducer includes a first substrate and a second substrate facing the first substrate. The first substrate includes a piezoelectric diaphragm and a conductive contact structure.
Taiwan Semiconductor Manufacturing Co., Ltd.


Contact patch measurements during hydroplaning events


Systems and methods for determining the contact patch parameters of a tire while rolling on deformable surfaces, such as during a hydroplaning event, are provided. More particularly, a piezoelectric sensor configured to provide a piezoelectric sensor output signal indicative of the time-varying curvature of a rolling tire can be mounted in a tire.

Manufacturing head


Provided is a manufacturing method of a head which includes a channel formation substrate having two piezoelectric actuator rows formed thereon, a driving circuit, and a driving circuit board which is provided with a first bump and a second bump. In the method, the first bump is provided on the outside of the piezoelectric actuator row, on the driving circuit board, an adhesive layer is provided on both sides of the first bump and the second bump, a first through hole and a second through hole are provided on the driving circuit board, a first connection wiring and a second connection wiring which are connected to the driving circuit are provided, and a first electrode of the piezoelectric actuator is electrically connected to the first connection wiring via the first bump and a second electrode is electrically connected to the second connection wiring via the second bump..
Seiko Epson Corporation


Method for controlling inkjet printing apparatus


The present invention lies in a method for controlling an inkjet printing apparatus performing printing to an elongated printing medium 11, the inkjet printing apparatus being provided with a printing head 10 having a plurality of nozzles composed of an opening portion 21 from which ink is discharged, an ink chamber 22 communicating with the opening portion 21 to accommodate ink, and a piezoelectric element 23 attached to the ink chamber 22 via a vibrating plate 24, and the method having a discharging step of performing continuous application to the piezoelectric element 23 of a nozzle to be used with a pulse number of two or more waves per one printing element to deform the piezoelectric element, thereby discharge ink in the ink chamber 22 from the opening portion 21, and a vibrating step of performing application to the piezoelectric elements 23 of all the nozzles with a pulse number of one wave per one printing element to deform the piezoelectric elements, thereby imparting only vibrations to the inks in the ink chambers 22 without discharging the inks, where the discharging step and the vibrating step are performed alternately.. .

Order a batch download of a huge number of patent PDFs. Bulk PDF Downloads This is a premium service.

Head and liquid ejecting apparatus


A head includes a channel formation substrate having two piezoelectric actuator rows formed thereon, a driving circuit, and a driving circuit board which is provided with a first bump and a second bump, in which the first bump is provided on the outside of the piezoelectric actuator row, an adhesive layer is provided on both sides of the first bump and the second bump, a first through hole and a second through hole are provided on the driving circuit board, a first connection wiring and a second connection wiring are provided in the first through hole and the second through hole, and a first electrode of the piezoelectric actuator is electrically connected to a first connection wiring via the first bump and a second electrode is electrically connected to a second connection wiring via the second bump.. .
Seiko Epson Corporation


Head and liquid ejecting apparatus


Provided is a head including a channel formation substrate that is provided with a pressure generating chamber which communicates with a nozzle for ejecting a liquid, a piezo element, a driving circuit board that is bonded to the one surface side of the channel formation substrate, and a driving circuit for driving the piezo element. The piezo element and the driving circuit are electrically connected to each other via a bump which is provided on any one of the channel formation substrate and the driving circuit board.
Seiko Epson Corporation


Liquid ejecting head and manufacturing liquid ejecting head


A liquid ejecting head and a method of manufacturing the liquid ejecting head are provided. The liquid ejecting head has a pressure chamber forming substrate that includes a plurality of piezoelectric elements and that is connected to a first surface of a sealing plate, a driver ic that outputs signals that drive the piezoelectric elements and that is provided on a second surface of the sealing plate that is on the opposite side to the first surface, and a power supply wire that supplies electrical power to the piezoelectric elements, that is formed in the second surface of the sealing plate, and that has at least one portion thereof embedded in the sealing plate and a surface thereof exposed on the second surface side..
Seiko Epson Corporation


Mems device, liquid ejecting head, and liquid ejecting apparatus


A mems device includes a protective substrate on which is mounted a driving circuit that drives a piezoelectric actuator and on which is formed an interconnect pattern electrically connected to the driving circuit, and a sealing substrate that includes a first opening and that is bonded to the protective substrate using an adhesive so that part of the interconnect pattern is located between the protective substrate and the sealing substrate. The interconnect pattern includes a connection portion that extends from a bonding region where the protective substrate and the sealing substrate are bonded by the adhesive to the first opening, and that has a connection region electrically connected to the driving circuit.
Seiko Epson Corporation


The stretched laminated film for use in piezoelectric polymer material, and manufacturing method thereof


The object of the present invention is to provide a laminated film made of polylactic acids which is not prone to delamination while having excellent piezoelectric properties and a manufacturing method thereof. That is, the present invention is obtained by the stretched laminated film manufactured by a co-extrusion process for use in piezoelectric polymer materials, containing a layer (a) which has poly-l-lactic acid as the primary component and contains an impact modifier in the range of 0.1 to 10 mass % and a layer (b) which has poly-d-lactic acid as the primary component and contains an impact modifier in the range of 0.1 to 10 mass %..
A School Corporation Kansai University


Miniature ultrasonic imaging system


An ultrasonic imaging apparatus having a micro-machined ultrasonic transducer (mut), such as a piezoelectric mut (pmut) or capacitive mut (cmut), with a transmitting mode and a receiving mode for generating and sensing acoustic pressure in imaging applications. During transmission in a pmut the inverse piezoelectric effect on the piezo layer causes transverse stress, which causes a bending moment in the pmut structure leading to out-of-plane deflection.
The Regents Of The University Of California


High volume manufacture of single element ultrasound transducers


A single element ultrasound transducer is fabricated from a laminate plate which produces multiple transducer elements simultaneously. The laminate plate includes the piezo ceramic, matching layer, and backing layer with rear electrode.
Koninklijke Philips N.v.


Splitter


In a splitter, a first duplexer including a first transmit filter and a first receive filter at a first antenna terminal and a second duplexer including a second transmit filter and a second receive filter at a second antenna terminal are connected to each other. A second transmit band of the second transmit filter and a second receive band of the second receive filter are positioned in a frequency range between a first transmit band of the first transmit filter and a first receive band of the first receive filter.
Murata Manufacturing Co., Ltd.


Surface elastic wave device comprising a single-crystal piezoelectric film and a crystalline substrate with low visoelastic coefficients


A surface elastic wave device comprises a stack including: a thin film made of a piezoelectric first material; a substrate made from a second material; and exciting means for generating at least one surface acoustic wave propagation mode in the piezoelectric film; wherein: the first material is a single-crystal material and the second material is a crystalline material, the thickness of the thin film of piezoelectric first material being smaller than or equal to 20 μm, and the first material and the second material having viscoelastic coefficients lower than or equal to those of quartz for the propagation mode induced by the exciting means.. .
Commissariat A L'energie Atomique Et Aux Energies Alternatives


Piezoelectric drive device and robot


A piezoelectric drive device includes multiple piezoelectric drive units that have a contact portion which can come into contact with a driven portion, and that have a piezoelectric substance. The number of the multiple piezoelectric drive units is 10 or more, an overall output from the multiple piezoelectric drive units is 0.3 w or greater, and a weight of the piezoelectric drive unit is 1 μg to 5 g..
Seiko Epson Corporation


Piezoelectric wafer, piezoelectric vibration piece, and piezoelectric vibrator


This piezoelectric wafer has: a piezoelectric vibration piece; a frame portion that supports the piezoelectric vibration piece; and a coupling portion that couples the piezoelectric vibration piece to the frame portion. The piezoelectric vibration piece is broken off at the coupling portion and separated from the piezoelectric wafer.
Daishinku Corporation


Piezoelectric resonator element, piezoelectric device using the piezoelectric resonator element, producing the piezoelectric resonator element, and producing the piezoelectric device using the piezoelectric resonator element


A crystal resonator element 2 has excitation electrodes 23a, 23b formed on front and back main surfaces of a crystal resonator plate. Each of the excitation electrodes is made of a ternary alloy containing silver as a major component, a first additive, and a second additive.
Daishinku Corporation


Ultrasonic transducer and manufacture method thereof


The present application relates to the technical field of transducer, it provides an ultrasonic transducer and the manufacture method therefore. The ultrasonic transducer comprises: a piezoelectric layer for radiating sound signal forward or backward, each side thereof being plated with an electrode; a matching layer arranged in the front of the piezoelectric layer and suitable for sending the forward sound signal; a tuning layer arranged on the back of the piezoelectric layer, wherein the piezoelectric layer is disposed between the tuning layer and the matching layer; a backing layer for absorbing the backward sound signal from the piezoelectric layer, wherein the backing layer is arranged against the piezoelectric layer on the tuning layer..
Edan Instruments, Inc.


Surface treatment of semiconductor substrate using free radical state fluorine particles


A substrate having a buffer layer and a barrier layer is formed. The buffer and barrier layers have different bandgaps such that an electrically conductive channel comprising a two-dimensional charge carrier gas arises at an interface between the buffer and barrier layers due to piezoelectric effects.
Infineon Technologies Austria Ag


Semiconductor device


Provided is a semiconductor device. The semiconductor device includes a substrate including a cantilever configured to generate a flow of cooling media through dynamic movement, an active area on the substrate which an electronic device is provided on, an insulation layer disposed to be spaced apart from the active area on the substrate, a lower electrode on the insulation layer, a piezoelectric film on the lower electrode, and an upper electrode on the piezoelectric film..
Electronics And Telecommunications Research Institute


Systems and methods for redundant access control systems based on mobile devices


Systems and methods for providing redundant access control systems are disclosed. According to some embodiments of the invention, the systems and methods include a smart lock that provides redundant access control.
Acsys Ip Holding Inc.




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


  • Follow us on Twitter
    twitter icon@FreshPatents

    ###

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


    1.1791

    0

    469695 - 0 - 105