This page is updated frequently with new Piezo-related patent applications.
| Device generating sound|
In the present invention, a device is provided with a main surface member, a piezoelectric body plate, a first support part, and a housing. The main surface member is used as a vibration plate.
Sharp Kabushiki Kaisha
| Acoustic wave device and acuoustic wave module|
An acoustic wave device of the present invention has a piezoelectric substrate, an excitation electrode arranged on the piezoelectric substrate, an electrode pad arranged on the piezoelectric substrate and electrically connected to the excitation electrode, and a cover arranged on the piezoelectric substrate so that a oscillation space is arranged between the cover and the excitation electrode. The cover has inside it a via conductor electrically connected to the electrode pad and is curved so that its surface facing the piezoelectric substrate approaches the excitation electrode side with respect to an upper surface of the piezoelectric substrate from a position of contact with the via conductor..
| Acoustic wave device|
An acoustic wave device includes: a support substrate; a piezoelectric substrate bonded to the support substrate; a first acoustic wave element formed on the piezoelectric substrate; a frame formed on the support substrate to surround the first acoustic wave element; and a substrate formed on the frame so that a cavity to which the first acoustic wave element is exposed is formed above the piezoelectric substrate, wherein a difference in linear expansion coefficient between the support substrate and the substrate in a first direction in a surface direction of the piezoelectric substrate is less than a difference in linear expansion coefficient between the support substrate and the piezoelectric substrate in the first direction, and the piezoelectric substrate remains in a region where the first acoustic wave element is formed and is removed in a region where the frame is formed.. .
Taiyo Yuden Co., Ltd.
| Integrated circuit configured with two or more single crystal acoustic resonator devices|
A configurable single crystal acoustic resonator (scar) device integrated circuit. The circuit comprises a plurality of scar devices numbered from 1 through n, where n is an integer of 2 and greater.
| Method and identifying discharge failure of a piezoelectric circuitry|
The present disclosure discloses a method and apparatus for identifying discharge failure of a piezoelectric circuitry. The apparatus comprises a piezoelectric circuitry consisting of charging and discharging circuit with a microcontroller to compute the time required to charge and discharge the piezoelectric element respectively.
Hcl Technologies Limited
| Self-limited crack etch to prevent device shorting|
A semiconductor device includes a piezoelectric layer interposed between a first metal layer and a hardmask layer. A first trench extends through the hardmask layer, the piezoelectric layer and the first metal layer.
International Business Machines Corporation
| Method of fabricating a base plate for piezo actuation|
A method of fabricating a base plate for piezoelectric actuation, comprises providing a plate having a major surface, striking a first removable portion of the plate in a first direction substantially normal to the major surface to shear the first removable portion relative to the plate by a shear distance that is less than the plate thickness. Striking the first removable portion in a second direction substantially opposite the first direction to reduce the shear distance by a reduction in shear that is less than the plate thickness.
Intri-plex Technologies, Inc.
| Piezoelectric device|
A piezoelectric device including a substrate, at least two electrodes extending on the substrate, at least one piezoelectric strip extending on the substrate and on the electrodes, and at least one electrically-conductive strip extending at least on one of the electrodes and on the piezoelectric strip and in contact with the substrate on either side of the piezoelectric strip.. .
Commissariat à I'Énergie Atomique Et Aux Énergies Alternatives
| Piezoelectric devices and methods for their preparation and use|
Methods for fabricating a piezoelectric device are provided. The methods can include providing a substrate and forming a nanocrystalline diamond layer on a first surface of the substrate.
Indian Institute Of Technology Madras
| Modular self-dampening triggering system for acoustic percussion elements|
A modular trigger system releasably attaches to a cymbal or other percussive element. The trigger system has a metal cover plate releasably affixable to a surface of the cymbal or percussive element, at least one piezo sensor releasably affixable to a surface of the cover plate, and a dampening element sandwiched between the undersurface of the cymbal or percussive element and the metal cover plate.
Field Electronics Drums, Llc
Tactile sensation providing apparatus and control tactile sensation providing apparatus
A tactile sensation providing apparatus includes a piezoelectric element 1, a detection unit 7 for detecting each pressing and releasing based on an output voltage of the piezoelectric element 1, a drive unit 4 for driving the piezoelectric element 1 synchronously with the detection of each pressing and releasing by the detection unit 7 and thereby providing a tactile sensation, a discharge unit 5 for discharging the piezoelectric element 1 after the driving of the piezoelectric element 1 before start of detection of next releasing or pressing, and a voltage fixing unit 11 for fixing, after the detection of the pressing or releasing by the detection unit 7 before the start of the detection of the next pressing or releasing, an input voltage of the detection unit 7 at a predetermined voltage.. .
Piezoelectric sensor assembly for wrist based wearable virtual keyboard
In one example a holder for a piezoelectric sensor comprises a body comprising a first surface and a second surface, opposite the first surface and a recess formed in the first surface of the body to receive the piezoelectric sensor. Other examples may be described..
Vacuum cell-assembly device, cell-assembly method and manufacturing device
A vacuum cell-assembly device, for cell-assembly of an upper substrate and a lower substrate of a display panel, includes an upper machine table, a lower machine table, a control circuit and a dynamic sensing and regulating structure. The dynamic sensing and regulating structure is fixed on the upper machine table and comprises a plurality of sub-structures.
Boe Technology Group Co., Ltd.)
A resistive element includes a resistive region in a semiconductor substrate, a first contact structure and a second contact structure. The semiconductor substrate includes a first main surface area.
Infineon Technologies Ag
Actuation and sensing platform for sensor calibration and vibration isolation
A micro-system with integrated multi-axis actuation and sensing capabilities for in-situ calibration of long-term scale-factor drifts in the output signal of attached or monolithically integrated inertial sensors. The micro-system comprises a piezoelectric actuator, integrated position sensors, and a controller.
The Regents Of The University Of Michigan
Cylindrical resonator gyroscope
A quartz vibratory gyroscope comprises a substrate, a quartz cylindrical ring having one end connected to the substrate and an opposite open end, and a radial surface lined with an electrically conductive material, and a pair (or more) of electrodes arranged adjacent opposite sections of the electrically conductive material to electrically induce resonance at the open end of the quartz cylindrical ring, such as by electrostatic actuation or piezoelectric actuation. The same or additional electrode pairs may be used for rotational sensing, such as by capacitive sensing or by piezoelectric sensing..
A flow control valve and a mass flow controller using the same
Thereby, a flow control valve which can effectively intercept a transmission of heat using a simpler and compacter structure than a flow control valve according to a conventional technology so that the temperature of a laminated piezoelectric actuator does not exceed its heat-resistant temperature even when it is used for high-temperature process gas is provided.. .
Piezoelectric injector for direct fuel injection
A piezo injector for direct fuel injection may comprise an injector body, an actuator unit having a piezoelectric actuator with a head plate and a base plate, a hydraulic coupler having a coupler piston, a coupler cylinder, and a coupler spring, and a nozzle unit having a nozzle needle arranged in a nozzle body. The piezoelectric actuator is surrounded by a corrugated tube braced between the head plate and the base plate such that the piezoelectric actuator has a preload imparted to it.
Continental Automotive Gmbh
A vibrating machine (1; 11) is described, in particular for machines for separating bulk foodstuffs, comprising the following features: a drive (3) suitable for generating vibrations at a frequency and with an amplitude, transmission members (4) suitable for transmitting the vibrations generated by the drive to an external element, and, in particular, an amplifier (5) suitable for amplifying the vibrations generated by the drive (3). The drive comprises an electromagnetic drive and/or a piezo actuator..
Liquid discharge manufacturing the same
A liquid discharge apparatus is provided, including a liquid discharge head including: an upper substrate, a plurality of piezoelectric elements, an intermediate substrate, a lower substrate and a plurality of individual traces arranged on the upper substrate and extending toward the contacts arranged on the one end side in the second direction from the plurality of piezoelectric elements respectively.. .
Brother Kogyo Kabushiki Kaisha
Liquid discharge producing piezoelectric actuator
A liquid discharge apparatus is provided, which comprises a channel substrate formed with a plurality of first and second pressure chambers disposed in a first direction, a plurality of first and second individual electrodes, a piezoelectric film, a common electrode, and first traces. The first traces are connected to exposed portions of the first individual electrodes exposed from the piezoelectric film, and each of the first traces passes from the exposed portion between the two second individual electrodes to extend to the one side in the second direction.
Brother Kogyo Kabushiki Kaisha
Liquid discharging apparatus and control liquid discharging apparatus
A liquid discharging apparatus includes a housing, a head unit that is provided in the housing, and includes a discharge section, which is provided with a piezoelectric element that is displaced depending on a driving signal, a driving signal creation section that creates the driving signal, a temperature information creation section that creates temperature information, which shows a temperature of a predetermined location inside the housing, a detection signal creation section that creates a detection signal by amplifying a residual vibration signal, which shows residual vibrations that occur in the discharge section after the piezoelectric element is displaced depending on the driving signal, with an amplification factor that depends on a temperature, which the temperature information shows, and a discharge state determination section that determines a discharge state of the liquid in the discharge section on the basis of the detection signal.. .
Seiko Epson Corporation
Driving circuit for driving a capacitive load
Provided is a liquid discharging apparatus which includes a modulation circuit which generates a modulation signal which is obtained by pulse-modulating a source signal, a transistor which generates an amplified modulation signal by amplifying the modulation signal, a low pass filter which includes an inductor and a capacitor and generates a drive signal by smoothening the amplified modulation signal, a piezoelectric element which is displaced by receiving the drive signal, a cavity of which the internal volume changes in accordance with the displacement of the piezoelectric element, a nozzle through which liquid in the cavity is discharged in accordance with change in the internal volume of the cavity, and a circuit substrate on which the modulation circuit, the transistor, and the low pass filter are mounted, in which the capacitor is a leadless type capacitor.. .
Seiko Epson Corporation
Drive circuit for driving a capacitive load
A liquid discharge apparatus includes: a modulation circuit that generates a modulated signal by pulse-modulating a source signal; a transistor that amplifies the modulated signal to generate an amplified modulated signal; a low-pass filter that includes an inductor and a capacitor and smoothes the amplified modulated signal to generate a drive signal; a feedback circuit that returns the drive signal to the modulation circuit; a circuit board; a piezoelectric element that is displaced by application of the drive signal thereto. The circuit board has a first mounting surface and a second mounting surface.
Seiko Epson Corporation
Hand tool for processing goods
The hand tool includes a tool part that is held in a hollow cylindrical housing body of a housing part and that includes an ultrasonic transducer with at least one piezo element, which serves for delivering ultrasonic energy to a blade that is connected to the tool part. According to the invention a plurality of piezo elements are provided, which are separated from one another by contact elements and which include each a transfer opening, which is traversed by a transducer rod that is connected, directly or indirectly, to a coupling rod that is connected in one piece to the blade and that a pressing element is provided that is connected to the transducer rod and that presses the piezo elements against a locating surface of an element which is connected, directly or indirectly, to the coupling rod and which mechanically couples the piezo elements with the coupling rod..
A O Schallinox Gmbh
Method for detecting arousals in sleeping subjects
A sensor for detecting sleep related autonomic nervous system arousals has a pvdf piezo component designed to be affixed to a body part exhibiting arterial pulse wave activity, such as a finger or toe. The signal from the pvdf piezo transducer due to pulse wave activity is signal processed and delivered to a psg machine or a portable device for stowing digitized waveforms.
An electronic device 1 includes: a panel 10; a housing 60 holding the panel 10; and a piezoelectric element 30 attached to the panel 10, wherein the deformation of the piezoelectric element 30 causes the panel 10 to vibrate, to transmit human body vibration sound to an object in contact with the panel 10, and the perpendicular line or normal to the main surface of the panel 10 and the surface of the piezoelectric element 30 attached to the panel 10 are not orthogonal to each other.. .
Drive circuit for driving a capacitive load
A liquid discharge apparatus includes: an modulation circuit that generates a modulated signal by pulse-modulating a source signal through self-oscillation; a transistor that amplifies the modulated signal to generate an amplified modulated signal; a low-pass filter that includes an inductor and a capacitor and smoothes the amplified modulated signal to generate a drive signal; a feedback circuit that allows the drive signal to return to the modulation circuit; a piezoelectric element that is displaced by application of the drive signal thereto; a cavity that is filled with a liquid inside and has an internal volume which changes when the piezoelectric element is displaced; and a nozzle that is provided to discharge the liquid inside the cavity in response to the change of the internal volume of the cavity. In this configuration, a self-resonant frequency of the capacitor is higher than a frequency of the self-oscillation..
Seiko Epson Corporation
Lifting system, electrical testing, vibration damper, and machine assembly
The invention relates to a lifting system, comprising a piezoelectric actuator, a support, and a hydraulic stroke multiplier having an input and an output side, wherein with the input side of the hydraulic stroke multiplier said hydraulic stroke multiplier is tied to the piezoelectric actuator, and with the output side of the hydraulic stroke multiplier said hydraulic stroke multiplier is tied to the support. In the method for electrically testing an electronic component, the component is placed on the support of such a lifting system, and is lifted for positioning relative to a test contact.
Piezoelectric drive device, robot, and drive method thereof
A piezoelectric drive device includes a vibrating plate and multiple piezoelectric drive units that are disposed in the vibrating plate, and that respectively have a contact portion which can come into contact with a driven body.. .
Seiko Epson Corporation
Piezoelectric thin film stack
The present disclosure is drawn to a piezoelectric thin film stack and method of preparing the same. The piezoelectric thin film stack can comprise a substrate with an oxide application surface, a metal oxide adhesive blend layer applied to the oxide application surface, and a piezoelectric film applied directly to the metal oxide adhesive blend layer..
The State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Orego
Piezoelectric element and manufacturing piezoelectric element
Provided are a piezoelectric element having high stability, which operates with high efficiency, and a method for manufacturing the piezoelectric element. The piezoelectric element (10) has a laminate structure in which a first electrode (14), a first piezoelectric film (16), a second electrode (18), an adhesion layer (20), an interlayer (22), a third electrode (24), a second piezoelectric film (26), and a fourth electrode (28) are laminated in this order on a silicon substrate (12).
Nebulizing driving apparatus and nebulizing system
A nebulizing driving apparatus is used to drive a piezoelectric material of a nebulizing module. The nebulizing driving apparatus includes a driving circuit, a control circuit and a feedback circuit.
Delta Electronics, Inc.
Piezoelectric thin-film based flexible sensing device, fabrication thereof and operating the same
A sensing device, a method for fabrication thereof, and a method for operating the same are disclosed. The sensing device includes a flexible substrate, a first metallisation layer, a piezoelectric thin film layer, a second metallisation layer, and an insulating layer.
Masdar Institute Of Science And Technology
Apparatus including optical deflector controlled by saw-tooth voltage and its controlling method
An optical deflector includes a mirror; a piezoelectric actuator adapted to rock the mirror around an axis of the mirror; and a piezoelectric sensor adapted to sense vibrations of the piezoelectric actuator. A control unit includes: a saw-tooth voltage generating block adapted to generate a saw-tooth voltage; an integral block adapted to calculate an integral voltage of a sum of a sense voltage of the piezoelectric sensor and a dc offset characteristic voltage; a dc offset characteristic voltage calculating block adapted to calculate the dc offset characteristic voltage in accordance with the integral voltage; a subtracter block adapted to generate a deviation between the saw-tooth voltage and the integral voltage; and a controller adapted to generate a drive voltage in accordance with the deviation to apply the drive voltage to the piezoelectric actuator..
Stanley Electric Co., Ltd.
Pressure-sensing device and pressure-sensing touch panel
A pressure-sensing device including a pressed component that has a contact surface to which pressure is applied by contact from a presser; a polymeric piezoelectric element that is disposed at an opposite side from the contact surface of the pressed component and that has a piezoelectric constant d14 of 1 pc/n or more as measured at 25° c. Using a stress-charge method; a curable resin layer that includes at least one selected from the group consisting of cold-setting resins, thermosetting resins, and actinic radiation-curable resins and that is in contact with at least part of a surface of the polymeric piezoelectric element; and an electrode that is in contact with at least part of a surface of the polymeric piezoelectric element or of a surface of the curable resin layer..
Murata Manufacturing Co., Ltd
Deviated drilling system utilizing force offset
A technique facilitates steering during, for example, a borehole drilling operation. A steering tool is employed to control an orientation of a drill bit or other component.
Schlumberger Technology Corporation
Droplet discharge head and image forming apparatus incorporating same
A droplet discharge head includes a nozzle, a substrate, a diaphragm, and an electromechanical transducer element. The nozzle discharges droplets.
Ricoh Company, Ltd.
Liquid discharging apparatus, head unit, capacitive load driving circuit, and control capacitive load driving circuit
A liquid discharging apparatus includes a modulation portion that generates a modulation signal obtained by pulse-modulating a source signal; an amplifier that includes a first gate driver generating a first amplification control signal based on the modulation signal, a second gate driver generating a second amplification control signal based on the modulation signal, a first transistor operating based on the first amplification control signal, a second transistor connected to the first transistor on a low-potential side in series and operating based on the second amplification control signal; an operation control portion that controls operations of the first gate driver and the second gate driver; a low-pass filter that generates a driving signal by demodulating an amplification modulation signal generated based on operations of the first transistor and the second transistor; and a piezoelectric element that is displaced by applying the driving signal.. .
Seiko Epson Corporation
Printing apparatus, control printing apparatus, and control program for printing apparatus
A printing apparatus includes a first piezoelectric element; a first cavity; a first nozzle; a second piezoelectric element; a second cavity; a second nozzle; a drive signal generating unit that generates a drive signal; a residual vibration detecting unit that detects the first residual vibration signal and the second residual vibration signal; a discharge state determining unit that determines the state of discharge from the first nozzle from the first residual vibration signal and determines the state of discharge from the second nozzle from the second residual vibration signal; and a setting unit that sets the frequency of detection of the first residual vibration signal to be higher than the frequency of detection of the second residual vibration signal.. .
Seiko Epson Corporation
Device for receiving impacts, comprising inner piezoelectric energy recovery means
A device includes a deformable shell that defines an inner space under a gas pressure higher than the atmospheric pressure. A flexible piezoelectric membrane is applied against an inner wall of the deformable shell under the effect of the pressure present in the inner space.
Commissariat A L'energie Atomique Et Aux Energies Alternatives
Device for contactless monitoring of patient's vital signs
Device for contactless monitoring of a patient's vital signs in the form of a measuring mat comprising at least one measuring element. The measuring element comprises a piezoelectric sensor with a first and a second conductive electrode and a piezoelectric element.
Linet Spol. S R.o.
Device with rigid shell designed to undergo impacts and comprising internal energy recovery means
A device includes a rigid outer shell defining a hollow inner space. The device also includes an inner shell defining a hollow inner space.
Commissariat A L'energie Atomique Et Aux Energies Alternatives
Aspects of the present invention include: a method of fabricating a large-scale triboelectri nano-generator, a method of fabricating a large scale piezoelectric nanogenerator, and a method of placing either or both kinds of nano-generators in a single housing.. .
Piezoelectric element, multilayered piezoelectric element, liquid discharge head, liquid discharge apparatus, ultrasonic motor, optical apparatus, and electronic apparatus
A lead-free piezoelectric element that stably operates in a wide operating temperature range contains a lead-free piezoelectric material. The piezoelectric element includes a first electrode, a second electrode, and a piezoelectric material that includes a perovskite-type metal oxide represented by (ba1-xcax)a(ti1-yzry)o3 (1.00≦a≦1.01, 0.02≦x≦0.30, 0.020≦y≦0.095, and y≦x) as a main component and manganese incorporated in the perovskite-type metal oxide.
Canon Kabushiki Kaisha
Piezoelectric energy harvesting
An energy harvesting unit comprising: a package formed by a base and a lid, the package including a sealed interior volume and an exterior; a ledge formed in the sealed interior volume with a first cavity above and a second cavity below the ledge; a plurality of inner electrical contacts formed on the ledge; a plurality of outer electrical contacts formed on the exterior of the package wherein the outer electrical contacts are electrically connected to the inner electrical contacts through the package; and, a piezo-electric member in electrical communication with the inner electrical contacts and coupled to the ledge on a first side of the package and spanning across the cavity and coupled to the ledge on an opposite side of the package.. .
Planar piezoelectric actuator providing a large shear movement
An actuator providing a large shear movement in a chosen direction. The angle of inclination of the fibres relative to the chosen direction is larger than 2° and smaller than 40°; the spaces between the piezoelectric fibres of the active layer are filled with an incompressible elastic material; the active layer comprises at least two dimensionally stable elongate elements parallel to the chosen direction; the ends of each fibre are adhesively bonded to said dimensionally stable elements using a rigid adhesive; and said dimensionally stable elements are adhesively bonded, by a rigid adhesive, to said electrode-bearing layers..
Office National D'Études Et De Recherches Aérospatiales (onera)
Vibration generating apparatus
A vibration generating apparatus includes a mass body; an, elastic member coupled to the mass body; and a piezoelectric element disposed on one surface of the elastic member facing the mass body, wherein a surface of the mass body facing the piezoelectric element has a shape that prevents contact between the piezoelectric element and the mass body.. .
Mplus Co., Ltd.
Self-latching piezocomposite actuator
A self-latching piezocomposite actuator includes a plurality of shape memory ceramic fibers. The actuator can be latched by applying an electrical field to the shape memory ceramic fibers.
U.s.a. As Represented By The Administrator Of The National Aeronautics And Space Administration
Method for producing a piezoelectric multilayer component and a piezoelectric multilayer component
A method for producing a piezoelectric multilayer component is disclosed. Piezoelectric green films and electrode material are provided, arranged alternately on top of one another and sintered.
Multiple electrode plane wave generator
The invention may be embodied as an ultrasonic plane wave generator having a first sheet of piezoelectric material and a second sheet of piezoelectric material. A shared electrode may be between the first sheet and the second sheet.
Touch panel having press detection function
A piezoelectric sensor that can perform position detection and load detection. The touch panel having press detection function can detect the pressing load inputted to the pressing surface.
Nissha Printing Co., Ltd.
Phased array ultrasonic transducers with solderless stack bonding assembly
Disclosed is an ndt/ndi probe array and manufacturing method. The probe array includes a sheet of flexible circuit 10 with a plurality of lower pins 102 and corresponding, electrically connected, upper pins 104.
Olympus Scientific Solutions Americas Inc.
Mems chip, measuring element and pressure sensor for measuring a pressure
A micro-electro-mechanical system (mems) chip for measuring a pressure in a pressure space includes a mems substrate having a measuring region, a contact-making region connected to the measuring region via lines and having contacts, and a bushing region disposed between the measuring region and the contact-making region. The mems substrate defines a cavity formed as a blind hole that defines an opening through one side of the mems substrate, the bottom of the blind hole forming a membrane.
Kistler Holding Ag
Vibrating element and manufacturing the same, gyro sensor, electronic apparatus and moving object
A vibrating element includes a vibrating arm for detection. An electrode is provided on the vibrating arm for detection.
Seiko Epson Corporation
Piezo electric and high voltage absorption cooling system
The ever increasing cost of electricity has become a main area of concern for the indoor climate control business due to the fact that conventional absorption cooling devices suffer from a very high power consumption ranging from 2 kw to tens of kilo watts. The high power consumption of a typical absorption coolers comes from the operation of the boiler which is used to heat the lithium bromide (libr) solution, as well as the chiller pump and pipings.