公开(公告)号：US20230226572A1

公开(公告)日：2023-07-20

申请号：US17994408

申请日：2022-11-28

申请人： QISDA CORPORATION

发明人： Fu-Sheng Jiang

IPC分类号： B06B1/06 ,  H10N30/50 ,  H10N30/05 ,  H10N30/20 ,  G10K11/02

CPC分类号： B06B1/067 ,  H01L41/083 ,  H01L41/27 ,  H01L41/09 ,  G10K11/02

摘要： A waveform improvement method includes providing a piezoelectric material coupled to a matching material, generating a plurality of first grooves in a matching layer of at least one matching layer, packaging an isolation material into the plurality of first grooves, and providing two input voltages to the piezoelectric material for generating an ultrasonic signal by the piezoelectric material. The piezoelectric material includes at least one piezoelectric layer. The matching material includes at least one matching layer. The matching material is used to match acoustic impedance of the piezoelectric material. The plurality of first grooves in the matching layer are used to optimize the acoustic impedance and a vibration isolation effect.

公开(公告)号：US11655140B2

公开(公告)日：2023-05-23

申请号：US17126929

申请日：2020-12-18

申请人： STMicroelectronics S.r.l.

发明人： Nicolo' Boni ,  Roberto Carminati ,  Massimiliano Merli

IPC分类号： G03B21/00 ,  B81B3/00 ,  G02B26/08 ,  H01L41/09 ,  H04N9/31

CPC分类号： B81B3/0072 ,  B81B3/0021 ,  G02B26/0858 ,  G03B21/008 ,  H01L41/09 ,  H04N9/3152 ,  B81B2201/042

摘要： A micro-electro-mechanical device is formed by a fixed structure having a cavity. A tiltable structure is elastically suspended over the cavity and has a main extension in a tiltable plane and is rotatable about a rotation axis parallel to the tiltable plane. A piezoelectric actuation structure includes first and second driving arms carrying respective piezoelectric material regions and extending on opposite sides of the rotation axis. The first and the second driving arms are rigidly coupled to the fixed structure and are elastically coupled to the tiltable structure. During operation, a stop structure limits movements of the tiltable structure with respect to the actuation structure along a planar direction perpendicular to the rotation axis. The stop structure has a first planar stop element formed between the first driving arm and the tiltable structure and a second planar stop element formed between the second driving arm and the tiltable structure.

公开(公告)号：US20190237657A1

公开(公告)日：2019-08-01

申请号：US16258391

申请日：2019-01-25

申请人： TAIYO YUDEN CO., LTD.

发明人： Tomohiro HARADA ,  Hiroyuki SHIMIZU ,  Takayuki GOTO ,  Sumiaki KISHIMOTO ,  Yukihiro KONISHI

IPC分类号： H01L41/273 ,  H01L41/083 ,  H01L41/187 ,  H01L41/047 ,  H01L41/297 ,  H01L41/338 ,  H01L41/312 ,  H01L41/09

CPC分类号： H01L41/273 ,  H01L41/0471 ,  H01L41/083 ,  H01L41/09 ,  H01L41/187 ,  H01L41/297 ,  H01L41/312 ,  H01L41/338

摘要： A method of producing a multi-layer piezoelectric ceramic component includes: laminating ceramic green sheets to form a laminate, each of the ceramic green sheets being made of a piezoelectric ceramic material and including an electrically conductive pattern, the electrically conductive pattern including a base metal, being to be an internal electrode, and being formed on an inner side of an outer edge of the ceramic green sheet; sintering the laminate; and cutting the sintered laminate and causing the internal electrodes to be exposed.

公开(公告)号：US20190036509A1

公开(公告)日：2019-01-31

申请号：US16135655

申请日：2018-09-19

申请人： NGK INSULATORS, LTD.

发明人： Tomoyoshi TAI ,  Masashi GOTO ,  Yudai UNO ,  Shinya KANEKO

IPC分类号： H03H9/02 ,  H01L41/09 ,  H01L41/187 ,  H01L41/313 ,  H01L41/337 ,  H03H3/08 ,  H03H9/25

CPC分类号： H03H9/02574 ,  H01L41/09 ,  H01L41/187 ,  H01L41/313 ,  H01L41/337 ,  H03H3/08 ,  H03H9/02559 ,  H03H9/02622 ,  H03H9/25

摘要： A bonded body includes a supporting body composed of a ceramic, a bonding layer provided over a surface of the supporting body and composed of one or more material selected from the group consisting of mullite, alumina, tantalum pentoxide, titanium oxide and niobium pentoxide, and a piezoelectric single crystal substrate bonded with the bonding layer. The surface of the supporting body has an arithmetic average roughness Ra of 0.5 nm or larger and 5.0 nm or smaller.

公开(公告)号：US20180315917A1

公开(公告)日：2018-11-01

申请号：US15763801

申请日：2016-09-05

申请人： MITSUI CHEMICALS, INC.

发明人： Kazuhiro TANIMOTO ,  Katsuki ONISHI ,  Yuzo NAKAMURA

IPC分类号： H01L41/193 ,  D03D1/00 ,  C08J5/18 ,  H01L41/047 ,  H01L41/053 ,  H01L41/08 ,  H01L41/45 ,  A41D31/00

CPC分类号： B32B7/02 ,  B32B27/00 ,  B32B27/36 ,  D03D1/00 ,  D03D15/02 ,  H01L41/09 ,  H01L41/113 ,  H01L41/193 ,  H01L41/338 ,  H01L41/45

摘要： Provided is: an elongated plate-form piezoelectric body, which contains an optically active helical chiral polymer (A) having a weight-average molecular weight of from 50,000 to 1,000,000 and has an elongated plate shape having a thickness of from 0.001 mm to 0.2 mm, a width of from 0.1 mm to 30 mm and a width-to-thickness ratio of 2 or higher, and in which the lengthwise direction and the main orientation direction of the helical chiral polymer (A) are substantially parallel to each other; the crystallinity measured by a DSC method is from 20% to 80%; and the birefringence is from 0.01 to 0.03.

公开(公告)号：US20180309042A1

公开(公告)日：2018-10-25

申请号：US15774022

申请日：2016-12-13

申请人： KONINKLIJKE PHILIPS N.V.

发明人： MARK THOMAS JOHNSON ,  DAVID ANDREW FISH

IPC分类号： H01L41/04 ,  H01L41/193 ,  H01L41/09

CPC分类号： H01L41/042 ,  G09B21/004 ,  H01L41/09 ,  H01L41/0926 ,  H01L41/193

摘要： An active matrix array of electroactive polymer actuators (36) is provided, each electroactive polymer actuator (36) having a switching arrangement (34). The switching arrangement comprises an input which is connected to a respective data line (30) and an output which is connected to a first terminal of the associated electroactive polymer actuator (36), wherein a second terminal of each electroactive polymer actuator is connected to a control line (110). A driver provides drive signals which comprise at least first and second drive levels for application to the data lines and third and fourth drive levels for application to the control line. Use is made of of common electrode driving (i.e. the control line driving) to enable low transistor control voltages to be used to switch larger voltages across the electroactive polymer actuators.

公开(公告)号：US20180277741A1

公开(公告)日：2018-09-27

申请号：US15915649

申请日：2018-03-08

申请人： SEIKO EPSON CORPORATION

发明人： Kazuya KITADA

IPC分类号： H01L41/187 ,  H01L41/09 ,  H01L41/332 ,  H01L41/047

CPC分类号： H01L41/1871 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1646 ,  B41J2002/14241 ,  B41J2002/14419 ,  B41J2202/03 ,  H01L41/0477 ,  H01L41/0805 ,  H01L41/09 ,  H01L41/0973 ,  H01L41/1873 ,  H01L41/318 ,  H01L41/332

摘要： A piezoelectric element includes a first electrode, a second electrode, and a piezoelectric layer. The piezoelectric layer is provided between the first electrode and the second electrode, and is formed of a perovskite type oxide which contains potassium, sodium, niobium, and manganese. In the piezoelectric layer, a proportion of an A-site constituent element of the perovskite type oxide is smaller than a proportion of a B-site constituent element thereof. In XRD measurement of the piezoelectric layer, two or more peaks derived from the perovskite type oxide are provided in a range of 44°

公开(公告)号：US20180277738A1

公开(公告)日：2018-09-27

申请号：US15935539

申请日：2018-03-26

申请人： Seiko Epson Corporation

发明人： Koji OHASHI ,  Takahiro KAMIJO ,  Katsuhiro IMAI ,  Takumi YAMAOKA ,  Chikara KOJIMA

IPC分类号： H01L41/047 ,  H01L41/053 ,  H01L41/187 ,  H01L41/09 ,  H01L41/29 ,  B06B1/02 ,  B06B1/06 ,  G01N29/24 ,  A61B8/12 ,  A61B8/06

CPC分类号： H01L41/0475 ,  A61B8/06 ,  A61B8/12 ,  B06B1/0215 ,  B06B1/0622 ,  B06B1/067 ,  B06B2201/76 ,  B41J2/14201 ,  G01N29/245 ,  H01L41/047 ,  H01L41/0477 ,  H01L41/0533 ,  H01L41/09 ,  H01L41/0973 ,  H01L41/1876 ,  H01L41/29

摘要： A piezoelectric element has a first electrode layer, a piezoelectric layer on the first electrode layer, a second electrode layer on the piezoelectric layer, a third electrode layer on part of the second electrode layer and including third metal, and an insulating layer covering at least a part of the piezoelectric layer not provided with the second electrode layer and having an aperture exposing a part of the second electrode layer. The second electrode layer has a first layer including first metal and a second layer including second metal on the first layer. The second layer is exposed in the aperture. A difference in standard redox potential between the second metal and the third metal is smaller than a difference in standard redox potential between the first metal and the third metal.

公开(公告)号：US20180277502A1

公开(公告)日：2018-09-27

申请号：US15988916

申请日：2018-05-24

申请人： QUALCOMM Incorporated

发明人： Sinan GOKTEPELI

IPC分类号： H01L23/66 ,  H01L23/522 ,  H01L27/146 ,  H01L41/09 ,  H01L21/768

CPC分类号： H01L23/66 ,  H01L23/481 ,  H01L23/5225 ,  H01L27/1203 ,  H01L27/1464 ,  H01L29/66742 ,  H01L29/78603 ,  H01L29/78633 ,  H01L29/78648 ,  H01L41/09 ,  H01L2224/03002 ,  H01L2224/0401 ,  H01L2224/11002 ,  H01L2224/13022 ,  H01L2924/1421

摘要： An integrated radio frequency (RF) circuit structure may include an active device on a first surface of an isolation layer. The integrated RF circuit structure may also include a back-bias metallization on a second surface opposite the first surface of the isolation layer. A body of the active device is biased by the back-bias metallization. The integrated RF circuit structure may further include a handle substrate on a front-side dielectric layer on the active device.

公开(公告)号：US20180248536A1

公开(公告)日：2018-08-30

申请号：US15943919

申请日：2018-04-03

申请人： Murata Manufacturing Co., Ltd.

发明人： Toru Kidu ,  Takashi Hase ,  Takeshi Kamada ,  Hiroaki Kaida ,  Shigeaki Sugimura

IPC分类号： H03H9/19 ,  H01L41/18 ,  H03H9/13

CPC分类号： H03H9/19 ,  H01L41/09 ,  H01L41/18 ,  H01L41/338 ,  H03H9/02062 ,  H03H9/0595 ,  H03H9/1021 ,  H03H9/1035 ,  H03H9/131

摘要： A crystal vibration element that includes a crystal piece that has a prescribed crystal orientation, and a first direction and a second direction in a plan view thereof; and excitation electrodes that are respectively provided on front and rear surfaces of the crystal piece in order to excite a thickness shear vibration in the crystal piece upon application of an alternating electric field. A vibration distribution of the crystal piece has a vibration region that extends in a band-like shape in the second direction of the crystal piece and non-vibration regions that are adjacent to opposed sides of the vibration region in the first direction of the crystal piece.