公开(公告)号：US12097533B2

公开(公告)日：2024-09-24

申请号：US17308816

申请日：2021-05-05

Applicant: InvenSense, Inc.

Inventor： Mitchell H. Kline ,  Richard J. Przybyla

IPC: B06B1/06 ,  B06B1/02

CPC classification number: B06B1/0207 ,  B06B1/0603

Abstract: An ultrasonic transducer device comprises a controller and a differential piezoelectric micromachined ultrasonic transducer with a membrane later, a bottom electrode layer, a piezoelectric layer, and a top electrode layer comprising a first electrode with a positive voltage to displacement coefficient and a second electrode with a negative voltage to displacement coefficient. During a first period, the controller electrically decouples a first output of a first driver from the first electrode, electrically decouples a second output of a second driver from the second electrode, and electrically couples the first and second electrodes to equalize charge between them. During a second period, the controller electrically decouples the first and second electrodes, electrically couples the first output with the first electrode, and electrically couples the second output with the second electrode; where waveforms on the first and second outputs during the second time period are out of phase with one another.

公开(公告)号：US12064791B2

公开(公告)日：2024-08-20

申请号：US16823033

申请日：2020-03-18

Applicant: Apple Inc.

Inventor： Stephen P. Zadesky ,  Fletcher R. Rothkopf ,  Stephen B. Lynch ,  Martin Auclair

IPC: B06B1/06 ,  A61B5/00 ,  A61B5/021 ,  A61B5/024 ,  G06F1/16 ,  G06F3/01 ,  G10K9/122 ,  H01L41/09 ,  H10N30/00 ,  H10N30/20

CPC classification number: B06B1/0603 ,  A61B5/02133 ,  A61B5/02438 ,  A61B5/02444 ,  A61B5/7455 ,  B06B1/06 ,  G06F1/163 ,  G06F3/016 ,  G10K9/122 ,  H10N30/00 ,  H10N30/2041 ,  H10N30/2047 ,  H10N30/206 ,  A61B5/7405

Abstract: Examples of portable electronic devices including a piezo actuated vibrator for providing tactile feedback to the user are described. Portable electronic devices according to the present disclosure may include tactile feedback devices, which may be driven by a piezoelectric actuator/vibrator that is operatively coupled to or embedded into the housing of a portable electronic device. In some examples, the housing of the electronic device itself can be made of piezoelectric ceramic material. The piezoelectric element may be coupled to the housing of the product to cause the housing to deflect and/or vibrate. In some examples, the housing of the portable electronic device, which may be a portable media player device, may be configured for placement directly or indirectly in contact with the user's skin such that vibrations of the housing may be felt directly (without audible feedback) by the user.

公开(公告)号：US11872581B2

公开(公告)日：2024-01-16

申请号：US16910444

申请日：2020-06-24

Applicant: DISCO CORPORATION

Inventor： Xiaoming Qiu

IPC: B06B1/06 ,  B05B17/06 ,  H01L21/67 ,  B05B17/00 ,  H01L21/687 ,  B08B3/12

CPC classification number: B05B17/0646 ,  B05B17/0623 ,  B06B1/0603 ,  H01L21/67051 ,  H01L21/68764 ,  B08B3/12

Abstract: An ultrasonic water jet apparatus includes a water accumulation part in which the water supplied from a water supply source is temporarily accumulated, a jet port that jets the water accumulated in the water accumulation part, and a piezoelectric vibration plate including a dome part that is disposed opposed to the jet port in the water accumulation part and propagates the ultrasonic vibration to the water accumulated in the water accumulation part, a flange part that projects outward in the radial direction from a peripheral edge of the dome part, and an annular plate that projects outward in the radial direction from a peripheral edge of the flange part.

公开(公告)号：US11806750B2

公开(公告)日：2023-11-07

申请号：US17161726

申请日：2021-01-29

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Yutaka Kishimoto ,  Shinsuke Ikeuchi ,  Katsumi Fujimoto ,  Tetsuya Kimura ,  Fumiya Kurokawa

IPC: H10N30/87 ,  H10N30/00 ,  H10N30/20 ,  B06B1/06

CPC classification number: B06B1/0603 ,  H10N30/1051 ,  H10N30/2047 ,  H10N30/871 ,  H10N30/877

Abstract: A MEMS device includes a piezoelectric layer made of a piezoelectric single crystal, a first electrode on a first surface of the piezoelectric layer, and a first layer covering the first surface of the piezoelectric layer. At least a portion of the piezoelectric layer is included in a membrane portion. The first electrode is covered with the first layer and includes a recess. The piezoelectric layer includes a through hole that passes through the piezoelectric layer between a surface of the piezoelectric layer, which is opposite to the first direction, and the recess at a position corresponding to at least a portion of the first electrode.

公开(公告)号：US20190201934A1

公开(公告)日：2019-07-04

申请号：US16232431

申请日：2018-12-26

Applicant: TDK CORPORATION

Inventor： Kaoru KIJIMA ,  Kazuki SAITO

IPC: B06B1/02 ,  B06B1/06 ,  H01L41/04 ,  H01L41/047 ,  H01L41/083 ,  H01L41/09

CPC classification number: B06B1/0238 ,  B06B1/0603 ,  H01L41/042 ,  H01L41/0475 ,  H01L41/083 ,  H01L41/0973

Abstract: A vibration device includes a piezoelectric element, a vibration member to which the piezoelectric element is bonded, and a wiring member connected with the piezoelectric element. A method for vibrating the vibration device includes inputting a signal including a fundamental frequency component to the piezoelectric element through the wiring member, and vibrating the vibration device in a vibration mode that includes the fundamental frequency component and does not approximately include a high order frequency component that is n times (n represents an integer of 2 or more) the fundamental frequency component. The fundamental frequency component is lower than the resonance frequency component of the vibration device.

公开(公告)号：US20180287515A1

公开(公告)日：2018-10-04

申请号：US15938443

申请日：2018-03-28

Applicant: Seiko Epson Corporation

Inventor： Tomoaki TAKAHASHI

IPC: H02N2/14 ,  G03B21/14

CPC classification number: H02N2/14 ,  B06B1/0207 ,  B06B1/0603 ,  B06B2201/55 ,  B25J9/12 ,  B41J2/04581 ,  B41J2/14201 ,  G03B21/006 ,  G03B21/142 ,  G03B33/12 ,  G03B2205/0061 ,  H02N2/004 ,  H02N2/0055 ,  H02N2/006 ,  H02N2/026 ,  H02N2/06 ,  H02N2/103 ,  Y10S901/23

Abstract: A piezoelectric drive device includes piezoelectric vibration modules that each include a vibration portion and a transmission unit abutting a driven portion and transmitting longitudinal vibration in an alignment direction of the vibration portion with the driven portion and bending vibration which is a composite of the longitudinal vibration and lateral vibration of the vibration portion intersecting the alignment direction to the driven portion and a controller controlling the modules. The controller controls the modules in a first drive mode wherein the transmission portions of all the modules are driven to perform the bending vibration in a first direction and a second drive mode wherein the transmission portions of some of the modules are driven to perform the bending vibration in the first direction and the transmission portions of other modules are driven to perform the longitudinal or bending vibrations in a second direction opposite the first direction.

公开(公告)号：US20180175279A1

公开(公告)日：2018-06-21

申请号：US15890425

申请日：2018-02-07

Applicant: Murata Manufacturing Co., Ltd.

Inventor： YUHEI YAMAGISHI ,  Junichi Hashimoto ,  Kentaro Usui

IPC: H01L41/09 ,  H01L41/04 ,  H01L41/047 ,  B06B1/06 ,  G06F3/041 ,  G06F3/01

CPC classification number: H01L41/0926 ,  B06B1/0603 ,  B06B1/0688 ,  G06F3/016 ,  G06F3/0416 ,  G06F2203/04103 ,  H01L41/042 ,  H01L41/047 ,  H01L41/0986

Abstract: A vibration device that includes a diaphragm having a perimeter; a film which expands and contracts in a planar direction by application of a voltage, and an electrode on each main surface thereof; and a wire extended from the electrode outside of the perimeter of the diaphragm. The diaphragm has a first region in a node of vibration and a second region in a position other than the node of vibration. The wire has a section extended from the second region toward the first region, or is extended from the first region outside of the perimeter of the diaphragm.

公开(公告)号：US09985195B2

公开(公告)日：2018-05-29

申请号：US14408618

申请日：2013-10-31

Applicant: KYOCERA Corporation

Inventor： Hiroshi Mori

IPC: H01L41/09 ,  H01L41/053 ,  G06F3/01 ,  H01L41/047 ,  H01L41/29 ,  B06B1/06 ,  H04M1/02 ,  G10K9/122 ,  H01L41/083

CPC classification number: H01L41/0533 ,  B06B1/0603 ,  B06B1/0611 ,  B06B1/0681 ,  G06F3/016 ,  G10K9/122 ,  H01L41/0472 ,  H01L41/0475 ,  H01L41/083 ,  H01L41/09 ,  H01L41/0973 ,  H01L41/29 ,  H04M1/026 ,  H04M2250/12

Abstract: A piezoelectric actuator which is capable of reduction of noise resulting from vibration of a piezoelectric element, a piezoelectric vibration device, and a portable terminal are provided. A piezoelectric actuator includes a piezoelectric element including a stacked body composed of internal electrodes and piezoelectric layers which are laminated, and a surface electrode disposed on one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes; a flexible substrate electrically connected to the surface electrode; and a shock-absorbing material disposed on the flexible substrate. The shock-absorbing material, at least partly, is disposed on a first region of the flexible substrate which overlaps with the piezoelectric element.

公开(公告)号：US20180078970A1

公开(公告)日：2018-03-22

申请号：US15437963

申请日：2017-02-21

Applicant: Kabushiki Kaisha Toshiba

Inventor： Tomio ONO ,  Kazuhiro ITSUMI ,  Kazuhiko HIGUCHI

IPC: B06B1/06 ,  H01L41/053 ,  H01L41/047 ,  A61B8/00

CPC classification number: B06B1/0629 ,  A61B8/4272 ,  A61B8/4483 ,  A61B8/54 ,  B06B1/0603 ,  B06B1/0692 ,  H01L41/0475 ,  H01L41/0533 ,  H01L41/0973 ,  H01L41/313

Abstract: A piezoelectric device according to an embodiment comprises a piezoelectric thin film, a first electrode disposed on a first surface of the piezoelectric thin film, a substrate provided with an electrode pad, a plurality of pillar-shaped first supporting members provided between a second surface on an opposite side of the first surface of the piezoelectric thin film and the electrode pad of the substrate so as to fix the piezoelectric thin film onto the substrate, and a plurality of second electrodes electrically connected to the electrode pad from a part of the second surface of the piezoelectric thin film via a lateral surface of the first supporting member. The piezoelectric thin film, the first electrode, and the second electrodes compose a plurality of diaphragms each of which is a transducer element. The first supporting members are provided at locations at which the respective diaphragms are sectioned. The first electrode is provided in common to the diaphragms.

公开(公告)号：US20180070183A1

公开(公告)日：2018-03-08

申请号：US15258997

申请日：2016-09-07

Applicant: Microsoft Technology Licensing, LLC

Inventor： Matti Pellikka

IPC: H04R17/10 ,  H04R29/00 ,  H04R3/04

CPC classification number: H04R17/10 ,  B06B1/0603 ,  B06B1/0614 ,  B06B1/0629 ,  H04M1/0266 ,  H04M1/03 ,  H04R1/24 ,  H04R3/04 ,  H04R7/045 ,  H04R7/10 ,  H04R17/00 ,  H04R29/001 ,  H04R2217/01 ,  H04R2400/03 ,  H04R2430/03 ,  H04R2440/05 ,  H04R2499/11

Abstract: According to one aspect, there is provided a speaker comprising a body, a surface structure rigidly attached to the body, electro-magnetic deformable plate elements attached to the rigid planar surface structure and configured to bend, when driven with voltage or current source, the surface structure, and electro-magnetic deformable plate element specific band-pass filter for at least one electro-magnetic deformable plate element of the electro-magnetic deformable plate elements, the band-pass filter having at least one electro-magnetic deformable plate element specific pass band.