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：US11770645B2

公开(公告)日：2023-09-26

申请号：US17746959

申请日：2022-05-18

Applicant: LG Display Co., Ltd.

Inventor： Taeheon Kim ,  Chiwan Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Kyungyeol Ryu ,  YuSeon Kho ,  YongGyoon Jang

IPC: H04R1/02 ,  H04R17/00 ,  H10N30/20 ,  H10N30/857 ,  H10N30/88 ,  H10N39/00

CPC classification number: H04R1/028 ,  H04R17/00 ,  H10N30/20 ,  H10N30/857 ,  H10N30/883 ,  H10N39/00 ,  H04R2499/15

Abstract: A display apparatus includes a display panel configured to display an image and a sound generating device on a rear surface of the display panel. The sound generating device is configured to vibrate the display panel to generate sound. The sound generating device includes a first structure and a first passivation layer on one side of the first structure, at least a portion of the first passivation layer having a non-flat shape.

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：US11596980B2

公开(公告)日：2023-03-07

申请号：US16655928

申请日：2019-10-17

Applicant: LG Display Co., Ltd.

Inventor： YuSeon Kho ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Kyungyeol Ryu ,  YongGyoon Jang

IPC: B06B1/06 ,  B06B1/04

Abstract: A vibration generating device includes a first piezoelectric device including at least one slit, a first electrode on a first surface of the first piezoelectric device, and a second electrode on a second surface opposite to the first surface of the first piezoelectric device.

公开(公告)号：US11435828B2

公开(公告)日：2022-09-06

申请号：US16163262

申请日：2018-10-17

Applicant: LG DISPLAY CO., LTD.

Inventor： ChiWan Kim ,  TaeHeon Kim ,  SungEui Shin ,  YongWoo Lee ,  KyungYeol Ryu ,  YuSeon Kho

IPC: G06F3/041 ,  G06F3/01 ,  C08G79/025

Abstract: Provided is a touch sensitive device including an electroactive layer formed of an electroactive matrix, wherein the electroactive matrix has a structure in which a piezoelectric ceramic and an electroactive polymer (EAP) are bonded and an electrode disposed on at least one surface of the electroactive layer. According to an exemplary embodiment of the present disclosure, the touch sensitive device uses an electroactive matrix has an excellent transparency, can be made thin, and has a high piezoelectric property so that the light transmittance and the vibration intensity of the touch sensitive device can be improved.

公开(公告)号：US11412331B2

公开(公告)日：2022-08-09

申请号：US17169056

申请日：2021-02-05

Applicant: LG Display Co., Ltd.

Inventor： YongWoo Lee ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  Kyungyeol Ryu ,  YuSeon Kho ,  YongGyoon Jang ,  Yong-Su Ham ,  Sungwook Ko

IPC: H04R17/00 ,  H04R1/02 ,  H04R1/28 ,  H04R3/12 ,  G08B6/00 ,  H04R1/40

Abstract: A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices on a rear surface of the display panel, the display panel being at least one of a vibration plate configured to output sound and a vibration plate configured to output a haptic vibration. Each of the plurality of vibration generating devices includes a first electrode under the display panel, a piezoelectric member under the first electrode, a damping member in a periphery the piezoelectric member, and a second electrode under the piezoelectric member.

公开(公告)号：US11095963B2

公开(公告)日：2021-08-17

申请号：US16450182

申请日：2019-06-24

Applicant: LG Display Co., Ltd.

Inventor： YongGyoon Jang ,  Yong-Su Ham ,  YongWoo Lee ,  Kyungyeol Ryu

IPC: H04R1/02 ,  G06F3/01 ,  G08B6/00 ,  H01L51/52 ,  H01L41/08 ,  H01L41/09 ,  H01L25/16

Abstract: Display panel and display apparatus including the same. A display panel includes a first substrate including a display portion configured to display an image, a second substrate attached to the first substrate by an adhesive member, and a vibration generating module within the adhesive member to overlap the display portion. The vibration generating module is surrounded by the second substrate and the adhesive member.

公开(公告)号：US10951992B2

公开(公告)日：2021-03-16

申请号：US16722713

申请日：2019-12-20

Applicant: LG Display Co., Ltd.

Inventor： YongWoo Lee ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  Kyungyeol Ryu ,  YuSeon Kho ,  YongGyoon Jang ,  Yong-Su Ham ,  Sungwook Ko

IPC: H04R17/00 ,  H04R1/02 ,  H04R1/28 ,  H04R1/40 ,  H04R3/12 ,  G08B6/00

Abstract: A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices on a rear surface of the display panel, the display panel being at least one of a vibration plate configured to output sound and a vibration plate configured to output a haptic vibration. Each of the plurality of vibration generating devices includes a first electrode under the display panel, a piezoelectric member under the first electrode, a damping member in a periphery the piezoelectric member, and a second electrode under the piezoelectric member.

公开(公告)号：US10860130B2

公开(公告)日：2020-12-08

申请号：US16130770

申请日：2018-09-13

Applicant: LG Display Co., Ltd.

Inventor： YuSeon Kho ,  Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  YongWoo Lee ,  Kyungyeol Ryu

IPC: G06F3/041 ,  G06F3/01 ,  G06F1/16 ,  G06F3/0354

Abstract: A display device to an embodiment of the present disclosure comprises a display panel including an active area having a bending area, a first touch sensitive element which overlaps the active area of the display panel and includes a first electroactive layer, a bending member which is disposed below the display panel and overlaps at least the bending area, and a second touch sensitive element including a second electroactive layer which covers the bending member. Therefore, in the bending area where the stress due to the bending is concentrated, the lifespan and the driving stability of the first touch sensitive element and the second touch sensitive element may be improved.

公开(公告)号：US10790438B2

公开(公告)日：2020-09-29

申请号：US15822740

申请日：2017-11-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Yong-Su Ham ,  Taeheon Kim ,  YongWoo Lee ,  Kyungyeol Ryu ,  YuSeon Kho ,  MyungJin Lim

IPC: H01L41/27 ,  H01L41/083 ,  H01L41/45 ,  H01L41/193 ,  B32B37/10 ,  G06F3/02 ,  G06F3/01 ,  G06F3/0488 ,  H01L41/253

Abstract: Provided are a touch sensitive element and a manufacturing method thereof. The manufacturing method for the touch sensitive element according to an embodiment of the present disclosure includes forming an electroactive polymer coating layer by applying an electroactive polymer solution on a substrate; forming an electroactive layer by heating and pressurizing the electroactive polymer coating layer using a hot press roller; and forming an electrode on the electroactive layer.