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Piezoelectric patents



      

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




Date/App# patent app List of recent Piezoelectric-related patents
04/07/16
20160100262 
 Acoustic reproduction device and sound-collecting acoustic reproduction device patent thumbnailAcoustic reproduction device and sound-collecting acoustic reproduction device
This acoustic reproduction device can suppress a loss in sense of volume and sense of comfort. The acoustic reproduction device causes a user to hear sound and is provided with a vibration unit (10), which includes a piezoelectric element (101) that flexes and a panel (102) that vibrates by being bent directly by the piezoelectric element (101), and with a holder (60), which holds the vibration unit (10) at a position where the vibration unit (10) contacts the user's ear..
Kyocera Corporation


04/07/16
20160100255 
 Electronic apparatus patent thumbnailElectronic apparatus
An electronic apparatus comprises a cover panel, a piezoelectric vibration element located on a rear surface being opposite to an exposed surface of the cover panel, and a drive module driving the piezoelectric vibration element based on a sound signal. The rear surface comprises a first region where the piezoelectric vibration element is disposed.
Kyocera Corporation


04/07/16
20160099705 
 Acoustic wave device patent thumbnailAcoustic wave device
An acoustic wave device includes: a substrate; a piezoelectric film located on the substrate; a lower electrode and an upper electrode facing each other across at least a part of the piezoelectric film; a silicon oxide film located at an opposite side of at least one of the lower electrode and the upper electrode from the piezoelectric film; a non-oxygen-containing insulating film located between the at least one of the lower electrode and the upper electrode and the silicon oxide film; and an additional film located at an opposite side of the silicon oxide film from the non-oxygen-containing insulating film and made of a material different from a material of the silicon oxide film.. .
Taiyo Yuden Co., Ltd.


04/07/16
20160099701 
 Nano- and micro-electromechanical resonators patent thumbnailNano- and micro-electromechanical resonators
A resonator includes a piezoelectric plate and interdigitated electrode(s). The interdigitated electrode includes a plurality of conductive strips disposed over a top surface of the piezoelectric plate.
Northeastern University


04/07/16
20160099570 
 Compact omnidirectional modular power harvesting system patent thumbnailCompact omnidirectional modular power harvesting system
The present invention relates to a compact omnidirectional energy harvesting system consisting of a semi-spherical (geodesic dome) shaped photovoltaic collector- and vertical-axis wind turbine, equipped with a power management system to convert, optimize and store the resulting solar, wind and auxiliary energy into electrical energy. The present invention has auxiliary energy capture ports to harvest ambient energies such as thermoelectric, piezoelectric, electromechanical, hydroelectric, rectifying antenna, electrostatic and electrochemical through plug-in modules.

04/07/16
20160099463 
 Composite negative active material and  preparing the same, negative electrode including composite negative active material, and lithium secondary battery including negative electrode patent thumbnailComposite negative active material and preparing the same, negative electrode including composite negative active material, and lithium secondary battery including negative electrode
A composite negative active material including a piezoelectric material; and a negative active material. Also a negative electrode including the composite negative active material, and a lithium secondary battery including the negative electrode..
Samsung Sdi Co., Ltd.


04/07/16
20160099402 
 Electromechanical conversion element, liquid drop discharge head and image forming apparatus patent thumbnailElectromechanical conversion element, liquid drop discharge head and image forming apparatus
An electromechanical conversion element includes a lower electrode formed directly or indirectly on a substrate or a base film; an electromechanical conversion film formed on the lower electrode and including a piezoelectric body having a perovskite crystal structure preferentially oriented with a {n00} plane where n is a positive integer; and an upper electrode formed on the electromechanical conversion film. A diffraction peak at a position 2θ at which a diffraction intensity has a maximum value and which corresponds to a (x00) plane or a (00x) plane, x being 1 or 2, obtained by θ-2θ measurement in x-ray diffraction measurement, shows a trapezoidal peak shape and has two or more bending points..
Ricoh Company, Ltd.


04/07/16
20160099400 
 Ceramic device and piezoelectric device patent thumbnailCeramic device and piezoelectric device
A piezoelectric device is a fired body including a body part 10 and external electrodes 21 and 22. A surface of the side electrode 22 is comprised only of a material for the side electrode 22.
Ngk Insulators, Ltd.


04/07/16
20160097696 
 Piezoelectric vibration sensor for fluid leak detection patent thumbnailPiezoelectric vibration sensor for fluid leak detection
A vibration sensor includes at least one piezoelectric crystal having an upper surface and a lower surface; a base having an attachment section defining an attachment surface and an at least one calibration mass; wherein a one of the at least one piezoelectric crystal upper surface and lower surface attaches to the attachment surface of the base; and wherein the at least one calibration mass is external to the piezoelectric crystal.. .
Mueller International, Llc


04/07/16
20160097674 
 Piezoelectric vibration sensor for monitoring machinery patent thumbnailPiezoelectric vibration sensor for monitoring machinery
A vibration sensor includes a piezoelectric crystal; and a base having an upper surface and a lower surface, the piezoelectric crystal attached to the upper surface of the base, the base defining a notch in at least one of the upper surface and the lower surface. Another embodiment of a vibration sensor includes a first piezoelectric crystal; a second piezoelectric crystal; a base attached to the first piezoelectric crystal on first side of the base and attached to the second piezoelectric crystal on a second side of the base opposite the first side of the base; a voltage amplifier in electrical communication to the first piezoelectric crystal; and a charge amplifier in electrical communication to the second piezoelectric crystal..
Vicont, Inc.


04/07/16
20160097436 

Vibration isolation systems including multi-parameter isolators providing piezoelectric-based damping


Embodiments of a vibration isolation system are provided. In one embodiment, the vibration isolation system includes a first isolator having opposing mounting interfaces, a tuning spring disposed between the opposing mounting interfaces, and a piezoelectric actuator disposed between the opposing mounting interfaces and coupled in series with the tuning spring, as taken along a first load path through the first isolator.
Honeywell International Inc.


04/07/16
20160096369 

Liquid-ejection head and image forming apparatus


A disclosed liquid-ejection head for ejecting liquid droplets includes a substrate having a diaphragm forming a part of walls of a pressure liquid chamber, and a piezoelectric element adhered to the substrate with adhesive, and configured to apply pressure to the pressure liquid chamber via the diaphragm. The piezoelectric element has a surface facing the substrate having the diaphragm, and the surface has one or more projection parts in an area in which the pressure liquid chamber is not disposed, and whereon the substrate having the diaphragm has one or more recess parts that fit in the respective projection parts..
Ricoh Company, Ltd.


04/07/16
20160096368 

Liquid ejecting head, liquid ejecting apparatus, and piezoelectric device


A liquid ejecting head includes a flow channel forming substrate that is provided with a space constituting a pressure generating chamber which communicates with nozzle openings, a vibration plate that is stacked on one surface of the flow channel forming substrate and seals the space, and a piezoelectric element that includes a first electrode, a piezoelectric layer, and a second electrode sequentially stacked on a surface of the vibration plate opposite to the flow channel forming substrate, in which the first electrode is formed, in which at least a width of a first direction along the opposite surface is narrower than the space in a region corresponding to the space, the piezoelectric layer is stacked so as to overlap the first electrode and at least a part of the vibration plate in the region corresponding to the space, the second electrode is stacked so as to overlap the piezoelectric layer in the region corresponding to the space, and as a thickness of a stacked direction of the piezoelectric element is a thickness of the piezoelectric layer, a first thickness (d1) of the piezoelectric layer of a part positioned on the first electrode and a second thickness (d2) of the piezoelectric layer of a part positioned on the vibration plate satisfy a relationship of the first thickness (d1)>the second thickness (d2).. .
Seiko Epson Corporation


04/07/16
20160096198 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a vibration member having one end fixedly attached to the housing; a piezoelectric element installed on the vibration member; and a mass body fixedly attached to the vibration member, wherein the vibration member includes an installation part on which the piezoelectric element is installed, and an extension part extended from at least one side surface of the installation part, and a maximum displacement portion of the vibration member is changed depending on a vibration mode.. .
Samsung Electro-mechanics Co., Ltd.


04/07/16
20160096155 

Apparatus for supporting a semiconductor wafer and vibrating a semiconductor wafer


In embodiments of the present disclosure, a vibrator is used to generate a vibration wave with a variable frequency that can agitate and facilitate the circulation of the processing fluids, thereby enhancing the uniformity and efficiency of the resulting semiconductor device features, the vibrator may be a piezoelectric vibrator or other similar vibrators. In some embodiments, the vibration of the processing fluids can facilitate the processing fluids in circulating in and out of narrow channels or features, or the vibration of the processing fluids can facilitate the bubbling out of the microbubbles entrapped in the processing liquid or entrapped between the surface of the semiconductor wafer and the processing liquid.
Taiwan Semiconductor Manufacturing Co., Ltd.


04/07/16
20160095965 

Instructional medical treatment system


The present invention discloses an appliance for administering medical treatment to a person, as well as methods of using the appliance. In various embodiments, the appliance may be comprised of a medical device, an electronic processor, an electronic display (such as a liquid crystal display (lcd)), an audio output device (such as a piezoelectric speaker/microphone), electronic controls for controlling the operation of the electronic processor, and an electronic input receptacle (such as a dvd drive or usb port) adapted to receive and electronically access an electronic storage device (such as a dvd or flash memory device).
Bluesky Medical Group, Inc.


04/07/16
20160095582 

Ultrasonic diagnostic apparatus


In general, according to one embodiment, an ultrasonic diagnostic apparatus includes an ultrasonic probe, a plurality of power supplies implemented by circuitry, at least one pulser, and a controller implemented by circuitry. The ultrasonic probe includes a plurality of piezoelectric transducers which generate ultrasonic waves in response to supplied driving signals.
Toshiba Medical Systems Corporation


03/31/16
20160095255 

Thermal piezoelectric apparatus


An integrated thermal apparatus includes a piezoelectric device and a thermal module which includes a thermal plate contacting a heat source to remove heat from the heat source. The thermal plate has built-in heat sinks for maximizing the surface area for heat dissipation.
Ice Computer, Inc.


03/31/16
20160094198 

Filter device and duplexer


In a filter device, first and second filter sections are connected in parallel between an input terminal and an output terminal. The first filter section is a longitudinally coupled resonator-type elastic wave filter including first and second inter-stage wiring lines with a two-stage cascading connection.
Murata Manufacturing Co., Ltd.


03/31/16
20160094197 

Piezoelectric vibration piece and piezoelectric vibrator


A piezoelectric vibration piece includes: a base portion; a pair of vibration arm portions which extends in a first (+y) direction from the base portion, and is arranged separately in a second (x) direction intersecting with the first (+y) direction; and a support arm portion which extends in the first (+y) direction from the base portion. The support arm portion, includes a first arm portion formed such that a width which is a length along the second (x) direction is gradually narrowed towards a tip end portion side of the support arm portion, and a second arm portion which extends in the first (+y) direction from the first arm portion and is formed such that the width is broadened towards the tip end portion side..
Sii Crystal Technology Inc.


03/31/16
20160093794 

Piezoelectric actuator and manufacturing piezoelectric actuator


A piezoelectric actuator includes a substrate, a first electrode arranged on the substrate, a piezoelectric body stacked on the first electrode, a second electrode superimposed on a surface of the piezoelectric body on a side opposite to the first electrode, and a wiring connected to the first electrode. The first electrode has a connecting portion which is arranged to protrude from an end portion of the piezoelectric body and to which the wiring is connected, and a first conductive portion is provided so that the first conductive portion overlaps with the first electrode while extending over from an area overlapped with the end portion of the piezoelectric body up to the connecting portion of the first electrode..
Brother Kogyo Kabushiki Kaisha


03/31/16
20160093793 

Piezoelectric composition, piezoelectric element and sputtering target


The present invention aims to provide a piezoelectric composition containing a composition represented by formula (5) as the main component, wherein the composition represented by formula (5) contains a first perovskite-type oxide represented by formula (1), a second perovskite-type oxide represented by formula (2), a tungsten bronze-type oxide represented by formula (3) and a third perovskite-type oxide represented by formula (4), (k1-x-ynaxliy)q(nb1-ztaz)o3 (1), srzro3 (2), ba(nb1-wtaw)2o6 (3), (bi0.5na0.5)tio3 and/or (bi0.5k0.5)tio3 (4), (1-m-n-p)a+mb+nc+pd (5); in formula (1), 0.20≦x≦0.80, 0.02≦0.10, 0.01≦z≦0.30 and 0.800≦q≦1.050; in formula (3), 0.01≦w≦0.30; and in formula (5), a represents the composite oxide represented by formula (1), b represents the composite oxide represented by formula (2), c represents the composite oxide represented by formula (3), d represents the composite oxide represented by formula (4), and 0.04≦m≦0.07, 0≦n≦0.010 and 0.001≦p≦0.020.. .
Tdk Corporation


03/31/16
20160093792 

Thin-film piezoelectric material element, manufacturing the same, head gimbal assembly, hard disk drive, ink jet head, variable focus lens and sensor


A thin-film piezoelectric material element includes a lower electrode film, a piezoelectric material film, and an upper electrode film, the lower electrode film, the piezoelectric material film and the upper electrode film are laminated sequentially. An upper surface of the piezoelectric material film is a concavity and convexity surface having a convex part and a concave part, the convex part is a curved surface convexly projected, and the concave part is a curved surface concavely hollowed, the upper electrode film is formed on the concavity and convexity surface.
Sae Magnetics (h.k.) Ltd.


03/31/16
20160092016 

Pressure detecting device and touch panel


The invention provides a pressure detecting device containing a pressurized member having a contact surface that is subjected to pressure due to contact with a pressurizing means; and a piezoelectric member that is arranged facing the pressurized member and that includes a polymeric piezoelectric material having a piezoelectric constant d14 of 1 pm/v or more as measured by a displacement method at 25° c., and a ratio ieb/iea between a product ieb of a cross-sectional secondary moment ib and a young's modulus eb of the pressurized member, and a product iea of a cross-sectional secondary moment ia and a young's modulus ea of the piezoelectric member, is in a range of from 102 to 1010.. .
Mitsui Chemicals, Inc.


03/31/16
20160091284 

Electro control hazing device (echd)


An electronic conditioning device delivers electric shocks correlated with sounds or driven by a signal associated with a sound sequence. The sound sequence can be a few seconds of a recorded human voice, a siren, a single tone, and so forth.
Conceived Innovations


03/31/16
20160090978 

Single actuator-operated cooling jet apparatus


Provided is a cooling spray device using a piezoelectric element, comprising an air spray body having a space part formed by coupling, to be airtight, upper and lower layer surfaces formed of resin and/or metal material and provided with a disc-type piezoelectric plate having the piezoelectric property to cross the space part, thereby dividing the space part into first and second chambers, wherein, at least one air pathway for connecting the space part to the outside so as to make air flow into or out from the space part is formed at one side of the air spray body, an air separation film formed by protruding towards the air pathway so as to separate air to be sucked in from air to be discharged is formed at one side of the piezoelectric plate.. .

03/31/16
20160090300 

Piezoelectric microphone with integrated cmos


A piezoelectric microphone and/or a piezoelectric microphone system is presented herein. In an implementation, a piezoelectric microphone includes a microelectromechanical systems (mems) layer and a complementary metal-oxide-semiconductor (cmos) layer.
Invensense, Inc.


03/31/16
20160089877 

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus


A piezoelectric element includes a first electrode layer which is stacked on the vibrating plate; a second electrode layer which is stacked on a side opposite to the vibrating plate with respect to the first electrode layer; a piezoelectric layer which is interposed between the first electrode layer and the second electrode layer; and a conductive layer which electrically connects the first electrode layer to external wiring, in which a point of contact between the conductive layer and the first electrode layer is in a vibrating region of the vibrating plate.. .
Seiko Epson Corporation


03/31/16
20160089601 

Piezoelectric video game controller


A joystick, or video game controller, comprising a plurality of a plurality of piezoelectric depressible buttons and/or thermoelectric generators for powering the joystick. Piezoelectric components are disposed beneath depressible buttons and a plurality of directional keypads on the video game controller in some embodiments.

03/31/16
20160089111 

Ultrasonic sensor as well as probe and electronic apparatus


An ultrasonic sensor includes a vibration plate, a first electrode, a piezoelectric body, and a second electrode. The first electrode is laminated on the vibration plate, that has a length along a surface of the vibration plate in a first direction, and that has a width wbe along the surface of the vibration plate in a second direction that is orthogonal to the first direction.
Seiko Epson Corporation


03/24/16
20160088409 

Acoustic device


This acoustic device can suppress a loss in sense of volume and sense of comfort. The acoustic device includes a vibration unit (10) including a piezoelectric element (101) that flexes and a panel (102) that vibrates by being bent directly by the piezoelectric element (101).
Kyocera Corporation


03/24/16
20160088401 

Microphone and manufacturing the same


A microphone and method of manufacturing the microphone are provided. The microphone includes a substrate that has a penetration aperture, a vibration film disposed on the substrate that covers the penetration aperture, and a first electrode disposed on the vibration film.
Hyundai Motor Company


03/24/16
20160088400 

Microphone and manufacturing the same


A microphone and method for manufacturing the microphone are provided. The microphone includes a substrate with a penetration aperture, a vibration unit disposed on the substrate to cover the penetration aperture, and a fixed electrode disposed over, and spaced from, the vibration unit.
Hyundai Motor Company


03/24/16
20160088399 

Electronic apparatus


An electronic apparatus for generating a vibration sound by causing a piezoelectric element to vibrate a member having the piezoelectric element attached thereto in an excellent manner is provided. In particular, an electronic apparatus 1 according to the disclosure herein including a piezoelectric element 30 and a panel 10 having the piezoelectric element attached thereto, the electronic apparatus for causing the piezoelectric element 30 to deform the panel 10 in such a manner vibrating a part of a human body in contact with the panel 10 being deformed, and thereby delivering sound, wherein the panel 10 has a recess 10a formed thereon, and the piezoelectric element 30 is attached to the recess 10a..
Kyocera Corporation


03/24/16
20160088227 

Vibration type actuator, optical device, and image pickup apparatus


Provided is an ultrasonic motor that includes a vibrator to which a piezoelectric element is fixed and a friction member having a frictional contact surface with the vibrator. A pressurizing member pressurizes the vibrator toward the friction member using a resilient force of a coil spring.
Canon Kabushiki Kaisha


03/24/16
20160088198 

Actuator unit and camera module including the same


There is provided an actuator unit including: a support member supporting a first lens so that the first lens is maintained in a non-contact state with a second lens adjacent thereto; and a piezoelectric member connected to the support member, deforming the support member so that the lenses are movable in an optical axis direction, and including a plurality of piezoelectric elements and a plurality of internal electrodes. The actuator unit configured as described above may improve driving reliability of the lens..
Samsung Electro-mechanics Co., Ltd.


03/24/16
20160087187 

Capacitive coupled resonator and filter device with comb electrodes and support pillars separating piezoelectric layer


A capacitive coupled resonator device includes a substrate, a bottom electrode, a piezoelectric layer, a top electrode, and at least one set of support pillars positioned between the piezoelectric layer and the top electrode and/or between the piezoelectric layer and the bottom electrode. The top electrode includes a first top comb electrode having a first top bus bar and first top fingers extending in a first direction from the first top bus bar, and a second top comb electrode having a second top bus bar and second top fingers extending in a second direction from the second top bus bar, the second direction being substantially opposite the first direction such that the first and second top fingers form a top interleaving pattern.
Avago Technologies General Ip (singapore) Pte. Ltd.


03/24/16
20160087186 

Capacitive coupled resonator and filter device with comb electrodes and support frame separation from piezoelectric layer


A capacitive coupled resonator device includes a substrate, a bottom electrode, a piezoelectric layer, a top electrode, and at least one support frame positioned between the piezoelectric layer and the top electrode and/or positioned between the piezoelectric layer and the bottom electrode. The top electrode includes a first top comb electrode having a first top bus bar and first top fingers extending in a first direction from the first top bus bar, and a second top comb electrode having a second top bus bar and second top fingers extending in a second direction from the second top bus bar, the second direction being substantially opposite to the first direction such that the first and second top fingers form a top interleaving pattern.
Avago Technologies General Ip (singapore) Pte. Ltd


03/24/16
20160086625 

Circuit connection pad design for improved electrical robustness using conductive epoxy


Disk drives including head suspensions within dual stage actuation systems have improved electrical connectivity between electrical connection pads from flexible circuits as are applied to head suspension assemblies with piezoelectric microactuators as also provided to head suspension assemblies. A more robust electrical connection provides for better control of microactuator actuation for fine movements and positioning of magnetic read/write heads relative to disk data tracks as part of dual stage actuated suspension systems.
Seagate Technology Llc


03/24/16
20160084958 

Parking assistance for a vehicle


Systems and techniques are described that provide automated parking assistance for a vehicle. In some implementations, a parking assistance apparatus includes a frequency generator configured to generate a first frequency and a second frequency, and generate at least one synthesized frequency that is synthesized from the first frequency and the second frequency.
Lg Electronics Inc.


03/24/16
20160082735 

Piezoelectric device, liquid ejecting head, liquid ejecting apparatus and manufacturing piezoelectric device


A piezoelectric device comprising a substrate having two surface sides; a vibration plate on one of the two surface side, a piezoelectric element including a first electrode provided on the vibration plate, a piezoelectric body layer provided on the first electrode, the piezoelectric body layer having a groove section on a side surface, the groove section including a first surface facing to the vibration plate, and a second electrode provided on the piezoelectric body layer, and a stress application film having tensile stress and provided on an inner surface of the groove section.. .
Seiko Epson Corporation


03/24/16
20160082727 

Liquid ejecting head and liquid ejecting apparatus


There is provided a recording head unit that includes a recording head main body that drives a piezoelectric element to generate a pressure change in ink filling a pressure generation chamber so as to eject the ink through a nozzle formed in a nozzle plate; a holder to hold the recording head main body; and a fixing plate to which end surfaces, on the nozzle plate side, of the recording head main body and the holder are fixed. In the stated recording head unit, the fixing plate includes a slope section that is arranged in part of a predetermined region of the fixing plate where neither the holder nor the recording head main body is fixed, and that has a free movement portion of which cross section is formed in a mountain-like shape and which is capable of freely moving in a direction intersecting with a surface direction of the fixing plate; the fixing plate further includes a fixing portion with which a base end of the free movement portion is fixed to the holder; and the fixing plate is so configured as to be expanded/contracted in the surface direction of the fixing plate by a force applied in this direction..
Seiko Epson Corporation


03/24/16
20160082723 

Inkjet head, driving same, and inkjet printer


A drive signal applied to a thin-film piezoelectric element includes the following: at least one discharge pulse that causes a drop of ink to be discharged from a pressure chamber; and a cancellation pulse. Said cancellation pulse has the same polarity as the discharge pulse(s) and serves to suppress reverberations of a pressure wave applied to the pressure chamber when the thin-film piezoelectric element is driven by the application of the discharge pulse(s).
Konica Minolta, Inc.


03/24/16
20160082720 

Method of sensing degradation of piezoelectric actuators


Systems and methods for sensing degradation of a piezoelectric actuator in a print head. One or more electrical pulses may be transmitted to the piezoelectric actuator that cause the piezoelectric actuator to bend, thereby creating a pressure wave.
Xerox Corporation


03/24/16
20160082476 

Vibration generating device


There is provided a vibration generating device including: a housing of which one side is open to form a frequency adjustment hole; a vibrating member having a fixed end which is fixed to the housing and a free end which is extended from the fixed end to thereby vibrate; a weight body provided on the vibrating member; and a piezoelectric element coupled to one surface of the vibrating member.. .
Samsung Electro-mechanics Co., Ltd.


03/24/16
20160082475 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a vibrating member provided in the internal space to vibrate; a piezoelectric element coupled to one surface of the vibrating member; and a board which is provided to enclose a portion of outer surfaces of the housing, on which at least one driving element is mounted in order to supply a voltage to the piezoelectric element, and of which one side is disposed in the internal space to be connected to the piezoelectric element.. .
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160079958 

Acoustic resonator comprising vertically extended acoustic cavity


An acoustic resonator device includes a substrate, a bottom electrode, a piezoelectric layer, and a top electrode. The top electrode includes a first top comb electrode having a first top bus bar and first top fingers extending in a first direction from the first top bus bar, and a second top comb electrode having a second top bus bar and second top fingers extending in a second direction from the second top bus bar, substantially opposite to the first direction, such that the first and second top fingers form a top interleaving pattern.
Avago Technologies General Ip (singapore) Pte. Ltd.


03/17/16
20160079957 

Surface acoustic wave device


A surface acoustic wave device includes a piezoelectric substrate, a dielectric film, idt electrodes, and a resin member. The surface acoustic wave device includes a resin contact region where the piezoelectric substrate and the resin member are in direct contact with each other.
Murata Manufacturing Co., Ltd.


03/17/16
20160079956 

Acoustic resonator and manufacturing the same


There is provided an acoustic resonator including: a resonance part including a first electrode, a second electrode, and a piezoelectric layer interposed between the first and second electrodes; and a substrate provided below the resonance part, wherein the substrate includes at least one via hole penetrating through the substrate and a connective conductor formed in the via hole and connected to at least one of the first and second electrodes. Therefore, reliability of the connective conductor formed in the substrate may be secured..
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160079955 

Piezoelectric vibration member, manufacturing the same, and piezoelectric vibrator


There is provided a piezoelectric vibration member including: a vibration substrate including a vibrating portion and a surrounding portion which is thinner than the vibrating portion; and vibrating electrodes disposed on one surface and the other surface of the vibrating portion in a thickness direction, wherein the vibrating portion includes protrusion portions protruding in relation to one surface and the other surface of the surrounding portion in the thickness direction, and at least one side surface of the protrusion portion has two or more crystal planes.. .
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160079514 

Method for manufacturing piezoelectric device, piezoelectric device, and piezoelectric self-supporting substrate


A piezoelectric substrate 22 and a support substrate 27 are prepared (a), these are joined to each other with an adhesive layer 26 therebetween to form a composite substrate 20 (b), and a surface of the piezoelectric substrate 22 is polished to thin the piezoelectric substrate 22 (c). Then, grooves 28 dividing the piezoelectric substrate 22 into parts having a size for a piezoelectric device are formed by half-dicing the composite substrate 20 (d).
Ngk Insulators, Ltd.


03/17/16
20160079513 

Doped piezoelectric resonator


Mechanical resonators including doped piezoelectric active layers are described. The piezoelectric active layer(s) of the mechanical resonator may be doped with a dopant type and concentration suitable to increase the electromechanical coupling coefficient of the active layer.
Analog Devices, Inc.


03/17/16
20160079512 

Amplified piezo actuator with motorized adjustment screw


A piezoelectric actuator with integrated features to provide linear displacement of a threaded rod is presented. One mechanism provides mechanically amplified piezo motion for high speed/short travel position scanning whereas the other provides a low speed/long travel piezo motorized position adjustment.
Thorlabs, Inc.


03/17/16
20160079511 

Method for controlling a piezoelectric device having a piezoelectric element mounted on a substrate


A piezoelectric device for implementing said method.. .

03/17/16
20160078912 

Stt-mram cell structure incorporating piezoelectric stress material


A magnetic memory cell including a piezoelectric material, and methods of operating the memory cell are provided. The memory cell includes a stack, and the piezoelectric material may be formed as a layer in the stack or adjacent the layers of the cell stack.
Micron Technology, Inc.


03/17/16
20160078890 

Head gimbal assembly and storage device provided with the same


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


03/17/16
20160077649 

Display panel with pressure sensor and electronic device with pressing input function


An electronic device with pressing input function has a substantially rectangular parallelepiped-shaped housing. A display panel with pressure sensor and an arithmetic circuit module are disposed in the housing.
Mitsui Chemicals, Inc.


03/17/16
20160076537 

Valve and fluid control apparatus


A fluid control apparatus includes a piezoelectric pump and valve. The valve includes a second valve housing, second seal member, diaphragm, first seal member, and first valve housing and has a structure in which they are laminated in sequence.
Murata Manufacturing Co., Ltd.


03/17/16
20160076530 

Micro-gas pressure driving device


A micro-gas pressure driving device includes a miniature gas transportation module, a covering plate and a tube plate. The miniature gas transportation module includes a convergence plate, a resonance membrane and a piezoelectric actuator.
Microjet Technology Co., Ltd.


03/17/16
20160075189 

Tire tread wear sensor system


A system monitors wear of a vehicle part. The system includes a piezoelectric disk electrically connected to a radio frequency circuit for receiving electrical current from the piezoelectric disk and an antenna for actively transmitting a signal from the radio frequency circuit to a microprocessor such that, when the piezoelectric disk contacts a surface through wear, the radio frequency circuit actively generates a signal received by the microprocessor..
The Goodyear Tire & Rubber Company


03/17/16
20160075137 

Liquid ejection head and liquid ejection apparatus


A liquid ejection head includes a substrate in which a pressure generating chamber that communicates with a nozzle opening is formed; and a piezoelectric element having a piezoelectric layer, a first electrode that is formed on a surface of the piezoelectric layer on a side of the substrate so as to correspond to the pressure generating chamber, and a second electrode that is formed on a surface of the piezoelectric layer opposite to the side on which the first electrode is formed so as to extend over a plurality of the pressure generating chambers, wherein the second electrode is formed to extend to an outside of the pressure generating chamber in a longitudinal direction of the pressure generating chamber.. .
Seiko Epson Corporation


03/17/16
20160074907 

Vibrating generating device


There is provided a vibration generating device including: a piezoelectric element which is deformed when power is applied thereto; an installation member below which the piezoelectric element is installed; a weight fixedly installed below the installation member to be disposed below the piezoelectric element; a plurality of elastic members connected to the installation member to change a displacement direction by deformation of the installation member and disposed to face each other; and a damper member fixedly installed on a lower surface of the weight, wherein a thickness of the damper member is determined to allow the damper member to be disposed in a space formed by the plurality of elastic members when the elastic members are driven normally.. .
Samsung Electro-mechanics Co., Ltd.


03/17/16
20160074906 

Vibration generating device


There is provided a vibration generating device including: a housing having an internal space; a base member installed in the housing to be disposed in a central portion of the housing; a first plate installed on the base member; a first piezoelectric element installed on an upper surface of the first plate; a second piezoelectric element disposed to face the first piezoelectric element through a connection member; a second plate installed on the second piezoelectric element; and a vibration amplifying part installed on an upper surface of the second plate.. .
Industry-university Cooperation Foundation Hanyang University


03/10/16
20160073202 

Electronic device


Provided is an electronic device including a housing and an acoustic device configured to generate vibration sound that is transmitted through vibration of a part of a human body. The acoustic device includes a panel configured to be joined to the housing; a piezoelectric element configured to be joined to the panel for vibrating the panel; and a vibration adjusting unit configured to be joined to the panel and vibrated together with the panel by the piezoelectric element.
Kyocera Corporation


03/10/16
20160072475 

Elastic wave device


In an elastic wave device, an interdigital transducer (idt) electrode is disposed on a piezoelectric substrate. In at least one of first and second electrode fingers of the idt electrode, elongated sections with a widthwise dimension larger than that of a center of the first and second electrode fingers in a longitudinal direction are provided in at least one of a portion closer to a base end of the first or second electrode finger and a portion closer to a leading end of the first or second electrode finger than a central region of the first or second electrode finger.
Murata Manufacturing Co., Ltd.


03/10/16
20160072469 

Switchable filters and design structures


Switchable and/or tunable filters, methods of manufacture and design structures are disclosed herein. The method of forming the filters includes forming at least one piezoelectric filter structure comprising a plurality of electrodes formed on a piezoelectric substrate.
International Business Machines Corporation


03/10/16
20160072411 

Piezoelectric power generation


Technologies are generally described for generating electrical power from piezoelectric power. Example devices/systems described herein may use one or more of a piezoelectric device, a plurality of solid particles, and/or a container.
Empire Technology Development Llc


03/10/16
20160072332 

Flexible, hybrid energy generating and storage power cell


An apparatus includes a separator/electrolyte assembly; a first energy storage portion disposed on a first surface of the separator/electrolyte assembly; a second energy storage portion disposed on a second surface of the separator/electrolyte assembly; a first metallized piezoelectric film disposed on the first energy storage portion; and a second metallized piezoelectric film disposed on the second energy storage portion. When a force is applied to the first metallized piezoelectric film, a piezoelectric effect converts mechanical strain into electric potential and each energy storage portion stores the energy converted in the first energy storage portion and the second energy storage portion for subsequent discharge from the first energy portion and the second energy storage portion to an electronic device..
Nokia Corporation


03/10/16
20160072042 

Piezoelectric sensor for bicycle component


A piezoelectric material contains ferroelectric particles and an adhesive resin. The ratio of the ferroelectric particles relative to the total mass of the ferroelectric particles and the adhesive resin is 40 mass % or greater and 98 mass % or less..
Shimano Inc.


03/10/16
20160072041 

Monolithic pzt actuator, stage, and making


A monolithic, bulk piezoelectric actuator includes a bulk piezoelectric substrate having a starting top surface and an opposing starting bottom surface and a at least two electrodes operatively disposed on the bulk piezoelectric substrate consisting of at least two discrete electrodes disposed on either/both of the starting top surface and the starting bottom surface and at least one electrode disposed on the respective other starting bottom surface or starting top surface. A stage includes a base, at least two of the monolithic, bulk piezoelectric actuators disposed on the base, a movable platform disposed on the base, and a respective number of deformable connectors each having a first connection to a respective one of the piezoelectric actuators and a second connection to a respective portion of the movable platform.
Cornell University


03/10/16
20160072039 

Device using a piezoelectric element and manufacturing the same


An inkjet printing head 1 includes a pressure chamber (cavity) 5, a movable film 10a defining a top surface portion of the pressure chamber 5, and a piezoelectric element 9 disposed above the movable film 10a. The piezoelectric element 9 includes a lower electrode 11 formed above the movable film 10a, a piezoelectric film 12 formed above the lower electrode 11, and an upper electrode 13 formed above the piezoelectric film 12.
Rohm Co., Ltd.


03/10/16
20160070378 

Device and audible and tactile interaction between objects


A device and a method for allowing a noncommunicating object to communicate comprises a processing module that provides a user interface that is capable of detecting an event on an area of the user interface, a control module for characterizing the detected event and a communication module for generating a message containing the characterization information from the detected event and receiving a digital message containing information for triggering an action that is associated with the event. The device also comprises piezoelectric means that are coupled to the processing module and capable of generating a mechanical vibration in the passive surface, which transforms the vibration into an acoustic wave in audio transmission mode, or of producing a mechanical vibration from an acoustic wave in audio reception mode..
Commissariat A L'energie Atomique Et Aux Energies Alternatives


03/10/16
20160069754 

Piezoelectric position sensor for piezoelectrically driven resonant micromirrors


Embodiments of the present invention provide an apparatus including a micromirror, an excitation structure containing or supporting the micromirror, and at least one piezoelectric sensor. The excitation structure includes at least one piezoelectric actuator, the excitation structure being configured to resonantly excite the micromirror so as to cause a deflection of the micromirror.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.


03/10/16
20160067969 

Method for manufacturing liquid jetting apparatus and liquid jetting apparatus


A method for manufacturing a liquid jetting apparatus includes: a wire formation step of forming a wire so that a part of the wire covers a piezoelectric film; and an electrode formation step of forming a second electrode, after the wire formation step, on a surface of the piezoelectric film on a side far from a vibration film so as to be in electrical conduction with the wire. The liquid jetting apparatus includes: a flow passage formation portion; and a piezoelectric actuator having the vibration film provided on the flow passage formation portion, the piezoelectric film arranged on the vibration film, a first electrode arranged on a surface of the piezoelectric film on a side near to the vibration film, the second electrode arranged on the surface of the piezoelectric film on the side far from the vibration film, and the wire connected to the second electrode..
Brother Kogyo Kabushiki Kaisha


03/10/16
20160067968 

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus


A piezoelectric element includes a vibrating plate which is formed of a first region in which a flexural deformation is allowed, and a second region in which the flexural deformation is inhibited. A piezoelectric element main body includes a lower electrode layer, a piezoelectric layer, and a higher electrode layer on the first region of the vibrating plate.
Seiko Epson Corporation


03/10/16
20160067967 

Piezoelectric element, liquid ejecting head, and liquid ejecting apparatus


A piezoelectric element includes a vibration plate that has a first region that is allowed to flexurally deform and a second region that is at an outer side of the first region and that is inhibited from flexurally deforming, a piezoelectric element main body in which a lower electrode layer, a piezoelectric material layer, and an upper electrode layer are stacked in that order on the first region of the vibration plate, and a common metal layer stacked on the upper electrode layer, with a common close adherence layer interposed therebetween. A portion of the piezoelectric element main body extends into the second region.
Seiko Epson Corporation


03/10/16
20160067427 

Nebulizer and controlling method thereof


A nebulizer includes a nebulizing circuit, a power circuit, a sampling circuit, a filtering circuit and a controlling circuit. The nebulizing circuit includes a piezoelectric actuator.
Delta Electronics, Inc.


03/10/16
20160066885 

Probe for ultrasonic imaging manufacturing the same


A probe of an ultrasonic imaging apparatus and a method for manufacturing the same are disclosed. The probe for an ultrasonic imaging apparatus includes a piezoelectric unit including a piezoelectric substance and an electrode; a printed circuit board (pcb) unit having a printed circuit board (pcb), configured to be formed at a lateral surface of the piezoelectric unit; a matching layer formed at front surfaces of the piezoelectric unit and the pcb unit; and a backing layer formed at a back surface of the piezoelectric unit and the pcb unit.
Samsung Medison Co., Ltd.


03/10/16
20160066883 

Apparatus and forward facing piezoelectric element ultrasound stylus


An apparatus and method for fabricating a forward facing piezoelectric stylus is provided. In a representative device, a piezoelectric element is connected to a stylus shaft, wherein the stylus shaft provides connectivity from the piezoelectric element to a console device.
University Of Iowa Research Foundation


03/10/16
20160066810 

Combination physiologic sensor


A multi sensor module especially designed for use in sleep-study applications includes a pvdf film piezoelectric transducer enclosed between an upper layer of a single-sided adhesive tape strip and a lower layer of a double-sided adhesive tape strip. Also adhesively affixed to the upper single-sided adhesive tape strip, but not overlaid by the lower double-sided adhesive tape strip are first and second conductive electrodes.
Dymedix Corporation


03/03/16
20160065169 

Nano- and micro-electromechanical resonators


A resonator including a piezoelectric plate and an interdigital electrode is provided. A ratio between a thickness of the plate and a pitch of the interdigital electrode may be from about 0.5 to about 1.5.
Northeastern University


03/03/16
20160065162 

Advanced thermally compensated surface acoustic wave device and fabrication


This disclosure relates to a method of fabrication of a surface acoustic wave device comprising the step (a) of providing a piezoelectric structure, the step (b) of providing a dielectric structure, wherein the step (b) comprises a step (b1) of metalizing the dielectric structure, and the method further comprising the step (c) of bonding the metalized dielectric structure to the piezoelectric structure.. .
Soitec


03/03/16
20160065097 

Piezoelectric energy harvester and wireless switch including the same


A piezoelectric energy harvester includes a thin film member, a support member situated to support the center or an edge of the thin film member, a piezoelectric member situated on the thin film member, and a driving member situated on the thin film member, situated to be misaligned with the support member, and configured to press the edge or the center of the thin film member. Such a design provides improved durability and functionality for a piezoelectric.
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160065096 

Piezoelectric energy harvester and wireless switch including the same


Provided are a piezoelectric energy harvester and a wireless switch including the piezoelectric energy harvester. The wireless switch uses energy generated in a piezoelectric energy harvester as a source of driving power, thereby transmitting communications signals to an external electronic device without requiring a battery.
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160065095 

Piezoelectric energy harvester and wireless switch including the same


Provided are a piezoelectric energy harvester and a wireless switch including a piezoelectric energy harvester. The piezoelectric energy harvester uses energy generated in the piezoelectric energy harvester as driving power, thereby transmitting communications signals to an external lighting device using this driving power.
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160065094 

Piezoelectric energy harvester and wireless switch including the same


Examples provide a piezoelectric energy harvester and a wireless switch including the same. The piezoelectric energy harvester includes a pressure transmission part situated between a pressing plate and a piezoelectric body, so as to transmit a uniform amount of pressure to the piezoelectric body, thereby generating a constant level of energy.
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160065092 

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 pressing force to the vibrator and bringing the vibrator into pressed 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 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.
Canon Kabushiki Kaisha


03/03/16
20160064912 

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.
Advenira Enterprises, Inc.


03/03/16
20160064646 

Piezoelectric ceramic, producing piezoelectric ceramic, and piezoelectric ceramic electronic component


A piezoelectric ceramic that contains an alkali niobate compound as its main ingredient. The alkali niobate compound has a perovskite crystal structure represented by ambo3 and contains an alkali metal.
Murata Manufacturing Co., Ltd.


03/03/16
20160064645 

Piezoelectric thin film and producing the same


A piezoelectric thin film is formed through sputtering and consists essentially of scandium aluminum nitride. The carbon atomic content is 2.5 at % or less.
National Institute Of Advanced Industrial Science And Technology


03/03/16
20160064644 

Piezoelectric composition and piezoelectric device


The present invention aims to provide a piezoelectric composition which is free of lead based compounds and is represented by the following formula (1), (bi0.5xna0.5xba0.7y+zca0.3y)a(tix+y+0.8zhf0.2z)o3 (1), wherein, x, y, z and a in formula (1) meets the following conditions, 0.70x0.90, 0.02y0.28, 0.02z0.28, 0.90a1.10 and x+y+z=1. The present invention also provides a piezoelectric device having the piezoelectric composition mentioned above..
Tdk Corporation


03/03/16
20160064642 

Vibrating device


A vibrating device that is in the form of a rectangular plate having opposed long sides and opposed short sides, and that utilizes an expanding and contracting vibration mode in a direction of the short sides. The vibrating device includes a si layer made of a degenerate semiconductor, a silicon oxide layer, a piezoelectric layer, and first and second electrodes through which a voltage is applied to the piezoelectric layer.
Murata Manufacturing Co., Ltd.


03/03/16
20160064641 

Low voltage transistor and logic devices with multiple, stacked piezoelectronic layers


A piezoelectronic transistor device includes a first piezoelectric (pe) layer, a second pe layer, and a piezoresistive (pr) layer arranged in a stacked configuration, wherein an electrical resistance of the pr layer is dependent upon an applied voltage across the first and second pe layers by an applied pressure to the pr layer by the first and second pe layers. A piezoelectronic logic device includes a first and second piezoelectric transistor (pet), wherein the first and second pe layers of the first pet have a smaller cross sectional area than those of the second pet, such that a voltage drop across the pe layers of the first pet creates a first pressure in the pr layer of the first pet that is smaller than a second pressure in the pr layer of the second pet created by the same voltage drop across the pe layers of the second pet..
International Business Machines Corporation


03/03/16
20160064640 

Power supply device and power supply method


There are provided a power supply device and a method for power supplying using the same. The power supply device may include a piezoelectric transformer unit including a plurality of piezoelectric layers, and a detecting unit detecting a feedback voltage by using at least one of the plurality of piezoelectric layers..
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160064639 

Piezoelectric driving apparatus and piezoelectric driving method


A piezoelectric driving apparatus according to an exemplary embodiment includes: a waveform synthesizer outputting a digital value; a digital-to-analog converter outputting an analog value corresponding to the digital value; and an output unit applying an offset voltage to the analog value to generate and output an asymmetrical driving signal.. .
Samsung Electro-mechanics Co., Ltd.


03/03/16
20160062463 

Nanowire enabled paper based haptic interfaces


Paper, as a ubiquitous material in everyday life, has recently emerged as flexible substrates for electronics. It offers a basis for functional electronic modules with advantages of low cost, ease of fabrication, good printability, high flexibility, and light weight.
The Royal Institution For The Advancement Of Learning / Mcgill University


03/03/16
20160061649 

Method and determining if a shipment undergoes excessive vibration


A method and apparatus for determining when a shipment undergoes excessive vibration or bouncing is provided herein. During operation, a device such as an accelerometer, piezoelectric, or vibration sensor, will monitor an acceleration/vibration experienced by a shipment.
Motorola Solutions, Inc


03/03/16
20160061645 

Ultrasonic liquid level sensing systems


An ultrasonic probe having ultrasonic sensors (e.g., piezoelectric crystals) for measuring the level of liquid within a sealed container and having features that make the probe more reliable and enable more precise liquid level readings as the container nears an empty state. Embodiments include spacing the ultrasonic sensors more closely at the lower end of the probe, offsetting the sensors to enable tighter vertical spacing, matched pairs of sensors for redundancy, and a downward facing sensor located at the lower end of the probe to decrease the minimum liquid level that can be accurately measured by the probe.
Air Products And Chemicals, Inc.


03/03/16
20160059559 

Liquid discharge head and manufacturing same


A liquid discharge head includes an element substrate, a liquid supply substrate, a photosensitive resin layer with which the element substrate and the liquid supply substrate are adhered, and a liquid inflow through-hole penetrating the element substrate, the photosensitive resin layer, and the liquid supply substrate. The element substrate includes a pressure chamber including a discharge opening that discharges liquid, a liquid supply passage, in which one end is connected to the pressure chamber and another end is connected to the liquid inflow through-hole, the liquid supply passage supplying the liquid supplied from the liquid inflow through-hole to the pressure chamber, a diaphragm that forms a surface that opposes the discharge opening of the pressure chamber, a piezoelectric transducer that applies vibration to the diaphragm, and a partition portion, in which one surface opposes the liquid supply passage and another surface opposes the photosensitive resin layer through the diaphragm..
Canon Kabushiki Kaisha


03/03/16
20160059558 

Liquid ejecting head and liquid ejecting apparatus


A liquid ejecting head includes a pressure chamber substrate where a plurality of spaces to be a pressure chamber along a y direction are formed in an x direction, a vibration plate that seals the space by being stacked in the pressure chamber substrate, and a piezoelectric element and a supporting unit that are stacked in the vibration plate on an opposite side to the pressure chamber substrate, in which positions at one end in the y direction are different from each other in a first space and a second space among the plurality of spaces, and the supporting unit suppresses a vibration of the vibration plate by being formed so as to overlap with at least the one end side portion in the first space in a planar view.. .
Seiko Epson Corporation


03/03/16
20160059557 

Element substrate and liquid ejection head


Provided is an element substrate including an orifice for ejecting liquid, a diaphragm for causing the liquid to be ejected through the orifice, a piezoelectric element for deforming the diaphragm, a pressure chamber for applying a pressure due to deformation of the diaphragm to the liquid, and a flow reducing portion communicating with the pressure chamber and having a width that is smaller than that of the pressure chamber. A connecting portion is formed for communication between the pressure chamber and the flow reducing portion.
Canon Kabushiki Kaisha


03/03/16
20160059556 

Liquid ejection head


A liquid ejection head includes a plurality of piezoelectric transducers that are configured to generate energy for respectively ejecting liquid from a plurality of ejection ports and arranged in line so as to constitute a plurality of columns and a common electrode connected to the plurality of piezoelectric transducers. The common electrode is provided with a plurality of first connection areas to which the plurality of piezoelectric transducers are connected commonly in units of columns and a second connection area that connects the plurality of first connection areas to one another.
Canon Kabushiki Kaisha


03/03/16
20160059555 

Liquid discharge head and head unit using the same


A liquid discharge head including plural liquid discharge portions each including a discharge port for discharging liquid, plural discharge ports forming a discharge port array; a common liquid supply flow path extending adjacent to the discharge port array on one side of the discharge port array; and a common liquid collection flow path extending adjacent to the discharge port array on the other side of the discharge port array. Each liquid discharge portion includes a pressure chamber having the discharge port, and a piezoelectric element facing the discharge port.
Canon Kabushiki Kaisha


03/03/16
20160059549 

Liquid ejecting device, controlling liquid ejection device, and control program of liquid ejecting device


A liquid ejecting device including: an ejection unit that includes a piezoelectric element which is shifted according to a driving signal, and a nozzle that ejects a liquid which the shift of the piezoelectric element; a generating unit that generates the driving signal based on a designation signal; a supply unit that supplies the designation signal to the generating unit; a detecting unit that detects residual vibration generated in the ejection unit after the piezoelectric element is shifted according to the driving signal; and a determining unit that determines an ejection state of the liquid in the ejection unit based on the detection results of the detecting unit, in which the detecting unit detects the residual vibration during a detection period, and the supply unit supplies the designation signal to the generating unit during a period other than the detection period.. .
Seiko Epson Corporation


03/03/16
20160059547 

Liquid pump having a piezoelectric member and inkjet apparatus having the same


A liquid pump includes a piezoelectric pump unit and a control unit. The piezoelectric pump unit includes an inlet, an outlet, and a chamber formed between the inlet and the outlet, and a wall of the chamber includes a piezoelectric member.
Toshiba Tec Kabushiki Kaisha




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

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