公开(公告)号：JP2008536657A

公开(公告)日：2008-09-11

申请号：JP2007558011

申请日：2006-01-27

Applicant: サルフコ インコーポレーティッド

Inventor： ラドルフ ダブリュ． グンナーマン ,  ジェイソン メイ ,  チャールズ アイ リッチマン

IPC: B06B1/08

CPC classification number: B06B1/0246 ,  B06B2201/58 ,  B06B2201/70

Abstract: 本発明は、圧縮性流体を含む変動負荷に強力な超音波エネルギーを与えるために特に使用するための強力な(たとえば>500W)超音波発生器に関する。 発生器は、パルス幅変調器と結合した可変周波数三角波形発生器を含む。 パルス幅変調器からの出力は絶縁ゲート型バイポーラトランジスタ(IGBT)のゲートと結合し、このIGBTが信号を増幅し、その信号を、磁気ひずみ変換器を駆動するために使用されるコイルに与える。 一つの態様では、信号が与えられたのち、0〜600VDCの高電圧がIGBTのコレクタとエミッタとの間に与えられる。 IGBTの出力は、+/-600Vの電圧の方形波形である。 この電圧は、超音波変換器に巻き付けられたコイルに送られる。 電圧は変換器上に磁場を作り出し、その磁場の結果として変換器の磁気ひずみ性が変換器を振動させる。 増幅素子としてのIGBTの使用は、低出力超音波変換器で一般に使用され、このような高出力の負荷変動用途では過熱し、故障するであろうシリコン制御整流器(SCR)回路の必要をなくす。

公开(公告)号：JP3597061B2

公开(公告)日：2004-12-02

申请号：JP33841898

申请日：1998-11-13

Applicant: 日本電気株式会社

Inventor： 望 土岐

IPC: B06B1/02 ,  B06B1/06 ,  G02F1/13 ,  H04M1/02 ,  H04M1/03 ,  H04N5/64 ,  H04R17/00

CPC classification number: G02F1/133308 ,  B06B1/0688 ,  B06B1/0692 ,  B06B2201/56 ,  B06B2201/70 ,  G02F2001/133394 ,  H04M1/03 ,  H04N5/642 ,  H04R1/025 ,  H04R17/00 ,  H04R2499/11 ,  H04R2499/15

公开(公告)号：JP3580931B2

公开(公告)日：2004-10-27

申请号：JP1171196

申请日：1996-01-26

Applicant: ティアールダブリュー インコーポレイテッド

Inventor： ジェイ ブローノウィッキー アレン

IPC: G01M7/02 ,  B06B1/02 ,  B60R21/01 ,  B60R21/013 ,  B60R21/268 ,  G01L9/00 ,  G01L11/04 ,  G01M3/24 ,  G01M3/32 ,  G01M17/007 ,  G01M99/00 ,  G08B3/10 ,  G10K9/122 ,  H03H21/00 ,  H04R1/00

CPC classification number: G01L9/0008 ,  B06B1/0261 ,  B06B2201/40 ,  B06B2201/70 ,  B60R21/013 ,  B60R21/268 ,  G01L11/04 ,  G01M3/24 ,  G01M3/3272 ,  G01M17/0078 ,  G01M99/00 ,  G01N2291/02872 ,  G08B3/10 ,  G10K9/122 ,  H03H21/00

公开(公告)号：JPS6178411A

公开(公告)日：1986-04-22

申请号：JP14907385

申请日：1985-07-06

Applicant: Unilever Nv

Inventor： MAIKERU UIRIAMU BEIZURII ROTSU

IPC: B01D21/00 ,  B01D21/28 ,  B01D43/00 ,  B06B1/02 ,  G05D19/02 ,  G10K11/22

CPC classification number: B01D21/283 ,  B01D43/00 ,  B06B1/0223 ,  B06B2201/70 ,  G05D19/02 ,  G10K11/22

公开(公告)号：US11861931B2

公开(公告)日：2024-01-02

申请号：US17414372

申请日：2020-06-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yingming Liu ,  Haisheng Wang ,  Xiaoliang Ding ,  Lei Wang ,  Changfeng Li

IPC: G06K9/00 ,  G06V40/13 ,  B06B1/06 ,  H10K59/65 ,  H10N30/045 ,  H10N30/077 ,  H10N30/857

CPC classification number: G06V40/1318 ,  B06B1/0692 ,  H10K59/65 ,  H10N30/045 ,  H10N30/077 ,  H10N30/857 ,  B06B2201/70

Abstract: A piezoelectric sensor, a manufacturing method thereof and an electronic device are provided. The piezoelectric sensor includes a substrate, an active layer, the active layer being disposed at a side of the substrate: a first electrode, the first electrode being disposed at a side of the active laver a wav from the substrate, and the first electrode including a plurality of sub-electrodes disposed at intervals: a piezoelectric layer, the piezoelectric layer being disposed at a side of the first electrode away from the active layer; and a second electrode, the second electrode being disposed at a side of the piezoelectric layer away from the first electrode. The active layer is configured to be capable of switching between an insulating state and a conducting state, and in the conducting state the active layer is capable of conducting the plurality of sub-electrodes.

公开(公告)号：US11847851B2

公开(公告)日：2023-12-19

申请号：US17675832

申请日：2022-02-18

Applicant: INVENSENSE, INC.

Inventor： Julius Ming-Lin Tsai ,  Mike Daneman ,  Sanjiv Kapoor

IPC: B06B1/06 ,  B81B7/00 ,  G06V40/13 ,  B81C1/00 ,  G01H11/08

CPC classification number: G06V40/1306 ,  B06B1/067 ,  B06B1/0666 ,  B81B7/007 ,  B81C1/00238 ,  B81C1/00246 ,  B81C1/00301 ,  G01H11/08 ,  B06B2201/70 ,  B81B2201/0271 ,  B81B2201/032 ,  B81B2203/0127 ,  B81B2207/012 ,  B81B2207/015 ,  B81C2201/0105 ,  B81C2201/0109 ,  B81C2203/035 ,  B81C2203/036 ,  B81C2203/0792

Abstract: Microelectromechanical (MEMS) devices and associated methods are disclosed. Piezoelectric MEMS transducers (PMUTs) suitable for integration with complementary metal oxide semiconductor (CMOS) integrated circuit (IC), as well as PMUT arrays having high fill factor for fingerprint sensing, are described.

公开(公告)号：US11798308B2

公开(公告)日：2023-10-24

申请号：US17448037

申请日：2021-09-17

Applicant: QUALCOMM Incorporated

Inventor： Jessica Liu Strohmann ,  Hrishikesh Vijaykumar Panchawagh ,  Nai-Kuei Kuo ,  Yipeng Lu ,  Ali Lopez ,  Kostadin Dimitrov Djordjev

IPC: G01N29/09 ,  G06V40/13 ,  H10K59/65 ,  B06B1/06

CPC classification number: G06V40/1306 ,  B06B1/0688 ,  H10K59/65 ,  B06B2201/70

Abstract: Some disclosed implementations include an ultrasonic sensor stack and an acoustic resonator. The acoustic resonator may be configured to enhance ultrasonic waves transmitted by the ultrasonic sensor stack in an ultrasonic frequency range that is suitable for ultrasonic fingerprint sensors. In some examples, the acoustic resonator may include one or more low-impedance layers residing between a first higher-impedance layer and a second higher-impedance layer. Each of the one or more low-impedance layers may have a lower acoustic impedance than an acoustic impedance of the first higher-impedance layer or an acoustic impedance of the second higher-impedance layer. At least one low-impedance layer may have a thickness corresponding to a multiple of a half wavelength at a peak frequency of the acoustic resonator. The peak frequency may be within a frequency range from 1 MHz. to 20 MHz.

公开(公告)号：US11786933B2

公开(公告)日：2023-10-17

申请号：US16919037

申请日：2020-07-01

Applicant: CLARION CO., LTD.

Inventor： Takeshi Hashimoto ,  Yasuhiro Fujita

IPC: B06B1/02 ,  H04R1/02 ,  H04R5/02

CPC classification number: B06B1/0238 ,  H04R1/025 ,  H04R5/023 ,  B06B2201/70 ,  H04R2201/028

Abstract: A vibration signal generation apparatus includes an absolute value signal generator configured to generate an absolute value signal by detecting an absolute value of amplitude of an acoustic signal, an envelope signal generator configured to generate an envelope signal by detecting an envelope of the absolute value signal, a differentiator configured to differentiate the envelope signal, an amplitude limiter configured to generate an amplitude-limited signal by limiting amplitude of the envelope signal so that an amplitude value of the differentiated envelope signal becomes zero or greater, and a vibration signal generator configured to generate a vibration signal by multiplying the amplitude-limited signal by a reference signal having a frequency that allows a human to perceive a vibration.

公开(公告)号：US11749010B2

公开(公告)日：2023-09-05

申请号：US17242928

申请日：2021-04-28

Applicant: Xiamen Tianma Micro-Electronics Co., Ltd.

Inventor： Qijun Yao ,  Bo Zhang ,  Feng Lu

IPC: G06V40/13 ,  B06B1/02 ,  B06B1/06 ,  G06F3/043

CPC classification number: G06V40/1306 ,  B06B1/0207 ,  B06B1/0696 ,  G06F3/043 ,  B06B2201/56 ,  B06B2201/70

Abstract: A fingerprint recognition module, a display panel and driving method, and a display device are provided. The fingerprint recognition module includes a first electrode layer including a plurality of first electrodes, and a piezoelectric layer disposed on a side of the first electrode layer. The fingerprint recognition module also includes a second electrode layer disposed on a side of the piezoelectric layer facing away from the first electrode layer. The second electrode layer includes a plurality of second electrodes that are arranged along a first direction, and one second electrode overlaps at least two first electrodes. Moreover, the fingerprint recognition module includes a flexible circuit board bonded and connected to the plurality of second electrodes. In a plane parallel to the first electrode layer, the plurality of second electrodes and the flexible circuit board are arranged along a second direction, and the first direction intersects the second direction.

公开(公告)号：US11740454B2

公开(公告)日：2023-08-29

申请号：US16954990

申请日：2018-03-26

Applicant: Lawrence Livermore National Security, LLC

Inventor： Salmaan H. Baxamusa ,  John Adams ,  Paul Ehrmann ,  Ted Laurence ,  Marlon G. Menor ,  Kathleen I. Schaffers

IPC: G02B1/00 ,  G02B27/00 ,  B06B1/02 ,  C09K13/00

CPC classification number: G02B27/0006 ,  B06B1/02 ,  C09K13/00 ,  B06B2201/70

Abstract: In one inventive concept, a method for etching an optic includes obtaining a microemulsion, where the microemulsion includes a continuous oil phase, a surfactant system comprising at least one surfactant, and water, submerging at least a portion of the optic in the microemulsion, and agitating by ultrasonication the microemulsion for etching the optic submerged therein.