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Class 310/313R - Surface acoustic wave devices


Subclass of Class 310 - Electrical generator or motor structure
Definition: Subject matter wherein a piezoelectric element is combined
No. of patents: 1179
Last issue date: 05/15/2012


1                      
NumberTitleIssue Date
8179017Boundary acoustic wave device having three-medium structure
A boundary acoustic wave device that has a three-medium structure and that prevents a high-order mode spurious response includes a piezoelectric substrate, a first dielectric layer laminated on the piezoelectric substrate, a second dielectric layer laminated on the ...
05/15/2012
8159110Fluid actuator, and heat generating device and analysis device using the same
A fluid actuator includes a piezoelectric body (31), a fluid channel (2) having the piezoelectric body (31) on a part of the inner wall thereof and enabling a fluid to move inside, and a surface acoustic wave generation portion (101) for ...
04/17/2012
8154170Acoustic wave device and method for manufacturing the same
An acoustic wave device includes: a piezoelectric substrate on which an acoustic wave element and an electrode pad connected to the acoustic wave element are formed; a first resin part having a first opening located above a function area in which an acoustic wave is...
04/10/2012
8154171Boundary acoustic wave device
A boundary acoustic wave device includes a first medium layer made of piezoelectric material, a second medium layer provided on the first medium layer, a third medium layer provided on the second medium layer, and an electrode provided at an interface between the se...
04/10/2012
8120230Acoustic wave device
An acoustic wave device includes an acoustic wave element including an IDT electrode provided on a substrate, and a protective film arranged to cover the acoustic wave element so as to stabilize characteristics. The protective film is a silicon nitride film composed...
02/21/2012
8115365Surface acoustic wave devices
A surface acoustic wave device has a supporting substrate, a propagation substrate made of a piezoelectric single crystal, an organic adhesive layer having a thickness of 0.1 to 1.0 μm and bonding the supporting substrate and the propagation substrate, and a surfac...
02/14/2012
8089196Microcavity enhanced surface acoustic wave devices
Shear-horizontal surface acoustic wave sensors with micro-cavities in the delay paths were studied using finite element methods. The microcavity devices are SAW delay path devices that have the delay path etched with square patterns at various wavelength dimensions ...
01/03/2012
8084916Acoustic wave device and electronic equipment using the same
An acoustic wave device has: a piezoelectric body; an interdigital electrode that is arranged on the piezoelectric body and excites an acoustic wave; and a dielectric layer that is arranged on the piezoelectric body so as to cover the interdigital electrode. The die...
12/27/2011
8072118Surface acoustic wave device
A highly reliable surface acoustic wave device includes wiring lines that do not easily rupture at a three-dimensional wiring portion. The surface acoustic wave device includes a plurality of surface acoustic wave elements located on a piezoelectric substrate, a sup...
12/06/2011
8058768Bulk acoustic wave resonator device
A bulk acoustic wave, BAW, resonator device comprising first and second metal layers (10, 20) and an intervening piezoelectric layer (30), the first metal layer (10) comprising spaced first and second portions (12, 14), wherein the first ...
11/15/2011
8058769Mechanical resonating structures including a temperature compensation structure
Mechanical resonating structures are described, as well as related devices and methods. The mechanical resonating structures may have a compensating structure for compensating temperature variations. ...
11/15/2011
8049395Boundary acoustic wave device
A boundary acoustic wave device includes an IDT electrode between a piezoelectric layer and a dielectric layer. A low thermal expansion medium layer having a linear thermal expansion coefficient less than that of the piezoelectric layer is laminated on the piezoelec...
11/01/2011
8044553Temperature compensated surface acoustic wave device and method having buried interdigital transducers for providing an improved insertion loss and quality factor
A SAW device having metal electrodes on a surface of the piezoelectric substrate includes a dielectric layer deposited on the surface. Depositing the layer results in seams extending upward from the electrodes extending above the surface of the substrate. An additio...
10/25/2011
8018121Integrated thickness shear mode (TSM) sensor and surface acoustic wave (SAW) device for simultaneous sensing and removal of analytes
Provided is a sensor which integrates a pair of substantially unidirectional surface acoustic wave (SAW) interdigital transducers (IDTs) and a thickness shear mode (TSM) electrode. The sensor provides simultaneous sensing and removal of material from the sensor's su...
09/13/2011
8018120Surface acoustic wave device and method of fabricating the same
A surface acoustic wave device includes a piezoelectric substrate; comb electrodes provided on a first surface of the piezoelectric substrate; and an insulating film provided on at least one of the first surface of the piezoelectric substrate and a second surface th...
09/13/2011
7999437Acoustic boundary wave device and electronic apparatus using the same
An acoustic boundary wave device includes a piezoelectric body, an IDT layer formed on the piezoelectric body, a pad electrode layer formed on the piezoelectric body and connected to the IDT layer, a first dielectric layer formed on the piezoelectric body and coveri...
08/16/2011
7982364Surface acoustic wave device and method for manufacturing the same
A surface acoustic wave device includes a piezoelectric substrate and a lid spaced apart from each other oppositely by a specific interval. A comb electrode and a pad electrode are provided to the piezoelectric substrate on a main surface on the lid side, and an ext...
07/19/2011
7982363Bulk acoustic device and method for fabricating
A method for fabricating a bulk acoustic wave (BAW) device comprising providing a growth substrate and growing an Group-III nitride epitaxial layer on the growth substrate. A first electrode is deposited on the epitaxial layer. A carrier substrate is provided and th...
07/19/2011
7982365Elastic wave device and filter and electronic equipment using the device
The elastic wave device of the present invention has an piezoelectric substrate; a first dielectric layer disposed on the piezoelectric substrate; a second dielectric layer disposed on the first dielectric layer; and an acoustical layer on the second dielectric laye...
07/19/2011
7977848Planar surface acoustic wave device, communication module, and communication apparatus
An acoustic wave device of the present application includes a piezoelectric substrate (14), interdigital transducer electrodes (13) formed on the piezoelectric substrate (14), and an SiO2 film (12) formed so as to cover the ele...
07/12/2011
7965015Lamb wave device
There is provided a lamb wave device with small variations in frequency, the device including: a piezoelectric thin film; an IDT electrode which is provided on a main surface of the piezoelectric thin film; and a support structure which supports a laminate of the ID...
06/21/2011
7944115Traveling wave grids with agitated surface using piezoelectric effect and acoustic traveling waves
A system for transporting particles includes a substrate and a plurality of spaced electrically conductive electrodes carried by the substrate. Further included is a carrier medium adapted for the retention and migration of particles disposed therein, wherein the ca...
05/17/2011
7939987Acoustic wave device employing reflective elements for confining elastic energy
An acoustic wave device includes electrodes carried on a surface of a piezoelectric material and an array of reflective obstacles such that elastic energy resulting from a piezoelectric effect is preferentially directed along a primary wave propagation path. The arr...
05/10/2011
7936106Surface acoustic wave sensor device
Provided herein is a surface acoustic wave (SAW) sensor device including a surface acoustic wave sensor and an oscillator corresponding to the surface acoustic wave sensor. A horizontal plane defined by the oscillator is inclined at a predetermined angle with respec...
05/03/2011
7928633Elastic wave element containing a silicon oxide film and a silicon nitride oxide film
An elastic wave element includes a piezoelectric substrate, an interdigital electrode provided on the piezoelectric substrate, a silicon oxide film covering the interdigital electrode, and a silicon nitride oxide film provided on the silicon oxide film. A film thick...
04/19/2011
7911111Surface acoustic wave devices
A surface acoustic wave device has a supporting substrates, a propagation substrate A made of a piezoelectric single crystal, an organic adhesive layer having a thickness of 0.1 to 1.0 μm and bonding the supporting substrate and the propagation substrate, and a sur...
03/22/2011
7902717Boundary acoustic wave device and method for manufacturing the same
A boundary acoustic wave device includes a piezoelectric substance, a dielectric substance laminated on the piezoelectric substance, and an electrode film disposed at a boundary between the piezoelectric substance and a dielectric substance, the device utilizing a b...
03/08/2011
7868517Lamb wave resonator
A Lamb wave resonator includes a piezoelectric layer, and a first electrode against a first face of the piezoelectric layer. The first electrode includes fingers and a contact arm, with each finger including a first side in contact with the contact arm and two other...
01/11/2011
7834514Wireless surface acoustic wave-based proximity sensor, sensing system and method
The subject invention is related to wireless proximity sensor and sensing system for detecting the position of an object. The system includes a transceiver for providing wireless communication with a passive wireless surface acoustic wave (SAW) proximity sensor. The...
11/16/2010
7830067Elastic boundary wave device
An elastic boundary wave device includes a first medium with piezoelectricity, an electrode exciting an elastic wave and provided on the first medium, a second medium made of a different material from the first medium and provided on the first medium to cover the el...
11/09/2010
7795779Saw torque and temperature sensor
A contactless SAW based torque and temperature sensor includes three SAW resonators 2, 3, 4 mounted on a common substrate 1 made of Y+34° cut of quartz. The first SAW 2 has its principle axis inclined at +45° to the X-axis of the substrate, wh...
09/14/2010
7791250Method for ultra-fast controlling of a magnetic cell and related devices
The present invention relates to a device and corresponding method for ultrafast controlling of the magnetization of a magnetic element. A device (100) includes a surface acoustic wave generating means (102), a transport layer (104), which is ty...
09/07/2010
7781936Surface acoustic wave device having gap between surface acoustic wave filters covered by sealer
A surface acoustic wave device includes a base substrate, first and second surface acoustic wave filters mounted on a surface of the base substrate, and a sealer provided on the surface of the base substrate and covering the first and second surface acoustic wave fi...
08/24/2010
7764005Traveling wave grids with agitated surface using piezoelectric effect and acoustic traveling waves
A system for transporting particles includes a substrate and a plurality of spaced electrically conductive electrodes carried by the substrate. Further included is a carrier medium adapted for the retention and migration of particles disposed therein, wherein the ca...
07/27/2010
7741752High frequency surface acoustic wave device and the substrate thereof
A high frequency SAW device and the substrate thereof are disclosed. The disclosed high frequency SAW device does not need to use the conventional and expensive sapphire substrate as its substrate. Besides, the disclosed substrate for a high-frequency SAW device can...
06/22/2010
7737603Boundary acoustic wave device
A boundary acoustic wave device includes a solid layer laminated onto a single crystal substrate, electrodes provided between the single crystal substrate and the solid layer, and boundary acoustic wave elements provided on the single crystal substrate having the sa...
06/15/2010
7728483Lamb wave type frequency device and method thereof
A Lamb wave type high frequency device comprises: a piezoelectric substrate; an interdigital transducer (IDT) electrode formed on a first main surface of the piezoelectric substrates a reinforcing substrate connected to a second main surface of the piezoelectric sub...
06/01/2010
7701113Acoustic wave device and method for fabricating the same
A surface acoustic wave device includes a piezoelectric substrate, at least one interdigital transducer (IDT) electrode provided on the piezoelectric substrate, and an insulator layer to improve a temperature characteristic arranged so as to cover the IDT electrode....
04/20/2010
7683521Radio frequency surface acoustic wave proximity detector
A proximity sensor for determining a position of an object. The proximity sensor includes a SAW device having a load end and an input end for receiving an input pulse. A sensing section connects to the load end of the SAW device. When the object is in a first positi...
03/23/2010
7667369High sensitivity microsensors based on flexure induced frequency effects
Acoustic sensing utilizing a cantilever structure coupled about at least one side of said cantilever to a base substrate, wherein said cantilever includes a piezoelectric section and has at least one acoustic wave device on a portion of the cantilever, wherein a fle...
02/23/2010
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