公开(公告)号：US12087263B1

公开(公告)日：2024-09-10

申请号：US18370964

申请日：2023-09-21

Applicant: John L. Butler ,  Frank D. Fratantonio

Inventor： John L. Butler ,  Frank D. Fratantonio

IPC: G10K11/172 ,  G10K9/122 ,  G10K11/00 ,  H04R1/44 ,  H04R3/00

CPC classification number: G10K11/172 ,  G10K9/122 ,  G10K11/008 ,  H04R1/44 ,  H04R3/002 ,  G10K2200/11 ,  H04R2201/403

Abstract: An electro mechanical piezoelectric under water sound acoustic projector transducer which does not interfere with adjacent hydrophone reception and is mainly controlled at the electrical input is presented here. The method recognizes that the main interference with the adjacent hydrophone is mostly due to the resonance of the projector when not transmitting and is excited by the incoming acoustic wave reflected from the target signal originally initiated by the projector. Means for accomplishing this are shown to be simple to implement on current or new projector systems. The process uses an electrical resistor that absorbs the incoming acoustic wave as if the resistor were a mechanical damper and the projector transducer were acoustically transparent.

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：US11872591B2

公开(公告)日：2024-01-16

申请号：US17118443

申请日：2020-12-10

Applicant: STMICROELECTRONICS S.r.l.

Inventor： Silvia Adorno ,  Roberto Carminati

IPC: B06B1/06 ,  B06B1/02 ,  G10K9/122

CPC classification number: B06B1/0292 ,  B06B1/06 ,  B06B1/0666 ,  G10K9/122

Abstract: A micro-machined ultrasonic transducer is proposed. The micro-machined ultrasonic transducer includes a membrane element for transmitting/receiving ultrasonic waves, during the transmission/reception of ultrasonic waves the membrane element oscillating, about an equilibrium position, at a respective resonance frequency. The equilibrium position of the membrane element is variable according to a biasing electric signal applied to the membrane element. The micro-machined ultrasonic transducer further comprises a cap structure extending above the membrane element; the cap structure identifies, between it and the membrane element, a cavity whose volume is variable according to the equilibrium position of the membrane element. The cap structure comprises an opening for inputting/outputting the ultrasonic waves into/from the cavity. The cap structure and the membrane element act as tunable Helmholtz resonator, whereby the resonance frequency is variable according to the volume of the cavity.

公开(公告)号：US11812666B2

公开(公告)日：2023-11-07

申请号：US17893881

申请日：2022-08-23

Applicant: LG Display Co., Ltd. ,  Korea University Research and Business Foundation

Inventor： Taeheon Kim ,  Sahn Nahm ,  YongGyoon Jang ,  Jonghyun Kim ,  Ku-Tak Lee ,  Chiwan Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Seok-June Chae

IPC: H10N30/853 ,  G06F3/041 ,  G10K9/122 ,  G06F1/16 ,  G06F3/01

CPC classification number: H10N30/8542 ,  G06F1/1605 ,  G06F3/016 ,  G06F3/0412 ,  G10K9/122

Abstract: A piezoelectric element comprising a compound represented by Formula 1, a piezoelectric device including the piezoelectric element, a vibration module including the piezoelectric device, and a display apparatus including the piezoelectric device are provided, where

(1−x)(LizNa0.5-zK0.5)(Nb1-ySby)O3·xCaZrO3  [Formula 1]

where x, y, and z have a range of 0.001≤x≤0.2, a range of 0≤y≤0.5, and a range of 0≤z≤0.2, respectively.

公开(公告)号：US20230326441A1

公开(公告)日：2023-10-12

申请号：US18131597

申请日：2023-04-06

Applicant: Microchip Technology Incorporated

Inventor： Jonathan Corbett

IPC: G10K9/122 ,  H04R17/10 ,  H04R17/00

CPC classification number: G10K9/122 ,  H04R17/10 ,  H04R17/005

Abstract: An apparatus includes a test circuit to receive signals from a piezoelectric horn and a control circuit to determine whether to operate the apparatus in a silent test mode or a normal mode. The apparatus includes a control circuit to, based on a determination to operate in the normal mode, enable a driver circuit to drive the piezoelectric horn so as to output sound when activated by the driver circuit. The test circuit is to, based on a determination to operate in the silent test mode, cause the piezoelectric horn to generate a piezoelectric response, wherein the piezoelectric horn is silent while generating the piezoelectric response during the silent test mode, and cause evaluation of whether or not the piezoelectric horn is working correctly based upon the received signals from the piezoelectric horn.

公开(公告)号：US11776519B2

公开(公告)日：2023-10-03

申请号：US17218620

申请日：2021-03-31

Applicant: LG Display Co., Ltd.

Inventor： YuSeon Kho ,  Yong-Su Ham ,  YongWoo Lee

IPC: G06F3/16 ,  G06V40/12 ,  G10K9/122 ,  G06F1/16

CPC classification number: G10K9/122 ,  G06F1/1605 ,  G06F3/16

Abstract: A display apparatus includes a display panel displaying an image and a vibration generating device disposed on a rear surface of the display panel to vibrate the display panel. The vibration generating device includes a piezoelectric structure including a first region and a second region, the first region has a vibration characteristic of a first frequency, and the second region has a vibration characteristic of a second frequency which differs from the first frequency.

公开(公告)号：US11768654B2

公开(公告)日：2023-09-26

申请号：US17190788

申请日：2021-03-03

Applicant: LG Display Co., Ltd.

Inventor： Sungsu Ham ,  Sungtae Lee ,  Joongsup Han ,  Uihyeon Jeong

IPC: G06F3/16 ,  G06F1/16 ,  G10K9/122

CPC classification number: G06F3/16 ,  G06F1/1605 ,  G10K9/122

Abstract: A display apparatus includes a display panel configured to display an image, and a vibration device on a rear surface of the display panel to vibrate the display panel to generate a sound, the vibration device including a vibration array including a plurality of vibration modules.

公开(公告)号：US20230266938A1

公开(公告)日：2023-08-24

申请号：US18309714

申请日：2023-04-28

Applicant: LG Display Co., Ltd.

Inventor： GyungBo HA ,  Taehyung KIM ,  Seeun KIM ,  HakMo Hwang ,  Seung Jun KOO

IPC: G06F3/16 ,  G06F1/16 ,  G06F1/20 ,  G10K9/122

CPC classification number: G06F3/16 ,  G06F1/1605 ,  G06F1/203 ,  G10K9/122

Abstract: The present disclosure relates to a display apparatus, especially having a display panel generating sounds. A display apparatus according to the present disclosure includes: a display module; a back cover at a rear surface of the display module; a depression recessed into the back cover from a first surface of the back cover with a first width and a first depth; a penetration through from a second surface of the back cover to the depression with a second width smaller than the first width and a second depth corresponding to a difference between a thickness of the back cover and the first depth; and a first piezo vibration unit disposed at a stepped portion between the penetration and the depression.

公开(公告)号：US11669126B2

公开(公告)日：2023-06-06

申请号：US17131389

申请日：2020-12-22

Applicant: LG Display Co., Ltd.

Inventor： Sungwook Ko ,  YongWoo Lee ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin

IPC: G06F1/16 ,  G09F9/30 ,  G10K9/122 ,  G06F3/16

CPC classification number: G06F1/1605 ,  G06F3/16 ,  G09F9/301 ,  G10K9/122 ,  G06F1/1652

Abstract: The present disclosure relates to a flexible vibration film and a display apparatus having the same. A flexible vibration film includes: a vibration layer; a first electrode layer disposed on a bottom surface of the vibration layer; and a second electrode layer disposed on a top surface of the vibration layer, wherein the vibration layer includes: a first vibration unit having a first vibration characteristics; a second vibration unit having a second vibration characteristics; and a flexible insulating part disposed between the first vibration unit and the second vibration unit, and wherein the first electrode layer includes: a first part corresponding to the first vibration unit; and a second part corresponding to the second vibration unit.

公开(公告)号：US20180270584A1

公开(公告)日：2018-09-20

申请号：US15982425

申请日：2018-05-17

Applicant: Murata Manufacturing Co, Ltd

Inventor： JUNICHI MURAKAMI ,  Masakazu Yamauchi

IPC: H04R17/00 ,  H04R1/02 ,  G10K9/122

CPC classification number: H04R17/00 ,  G10K9/122 ,  G10K9/22 ,  H04R1/02 ,  H04R1/2811 ,  H04R7/02 ,  H04R7/04 ,  H04R7/22 ,  H04R31/00 ,  H04R2201/02

Abstract: A piezoelectric sounding component includes a diaphragm that includes a metal plate and a piezoelectric body formed on the metal plate. The diaphragm bends and vibrates according to application of voltage to the piezoelectric body. A casing that includes a bottom wall, side walls, and a supporting portion to support the diaphragm in inside edge portions of the side walls. The side walls extending from edges of the bottom wall in a thickness direction and includes a first wall, a second wall positioned to face the first wall, and a third wall positioned between the first wall. Two or more terminals that are formed on the first wall or the third wall serve to apply voltage to the diaphragm. Two or more elastic adhesives join the side walls and the diaphragm between the two or more terminals and the diaphragm. Two or more conductive adhesives are formed on the two or more elastic adhesives and join the two or more terminals and the diaphragm. The diaphragm is supported by the supporting portion and accommodated in the casing so that a gap formed between the first wall and the diaphragm is smaller than a gap formed between the second wall and the diaphragm.