公开(公告)号：US20230395054A1

公开(公告)日：2023-12-07

申请号：US18451368

申请日：2023-08-17

Applicant: LG Display Co., Ltd.

Inventor： YuSeon KHO ,  Yong-Su HAM ,  YongWoo LEE

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

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：US20230049229A1

公开(公告)日：2023-02-16

申请号：US17978878

申请日：2022-11-01

Applicant: LG Display Co., Ltd.

Inventor： YongWoo LEE ,  Yong-Su HAM ,  Taeheon Kim ,  Sung-Eui SHIN

IPC: H04R17/00 ,  H01L41/37 ,  H01L41/047 ,  H01L41/09 ,  H01L41/083 ,  H01L41/08

Abstract: A flexible vibration module is disclosed. The flexible vibration module includes a piezoelectric composite layer, including: a plurality of piezoelectric portions each having a piezoelectric characteristic, where at least two of the plurality of piezoelectric portions have different sizes; and a flexible portion between the plurality of piezoelectric portions.

公开(公告)号：US20220199896A1

公开(公告)日：2022-06-23

申请号：US17559687

申请日：2021-12-22

Applicant: LG DISPLAY CO., LTD. ,  KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION

Inventor： YongWoo LEE ,  Chiwan KIM ,  Yong-Su HAM ,  YuSeon KHO ,  Seunghyun SUNG ,  Sahn NAHM ,  Dae-Su KIM ,  Su-Hwan GO ,  Jae-Min EUM ,  Ho-Sung SHIN

IPC: H01L41/43 ,  H01L41/047

Abstract: Compositions are disclosed that comprise a piezoelectric material according to Chemical Formula 1: (1−y)(NaaK1-a)(Nb1-x,Sbx)-ySrZrO3+n mol % CuO, wherein 0.01≤y≤0.10, 0.4≤a≤0.6, 0≤x≤0.06, and 0.5≤n≤1.5. The compositions can further comprise a first material, and a second material surrounded by the first material. A piezoelectric device is also described, which includes a piezoelectric device layer including a composition of Chemical Formula 1, and having a first material layer and a second material layer surrounded by the first material layer; a first electrode part disposed on a first surface of the piezoelectric device layer; and a second electrode part disposed on a second surface facing the first surface.

公开(公告)号：US20210183966A1

公开(公告)日：2021-06-17

申请号：US17111980

申请日：2020-12-04

Applicant: LG Display Co., Ltd.

Inventor： YuSeon KHO ,  Yong-Su HAM ,  YongWoo LEE

IPC: H01L27/32 ,  G06F3/01 ,  H01L51/52 ,  H01L41/09

Abstract: A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices configured to vibrate the display panel. Each of the plurality of vibration generating devices includes a plurality of first portions having a piezoelectric characteristic and a plurality of second portions disposed near the plurality of first portions to have an expansion coefficient, and the plurality of vibration generating devices have different expansion coefficients.

公开(公告)号：US20210173487A1

公开(公告)日：2021-06-10

申请号：US17108597

申请日：2020-12-01

Applicant: LG Display Co., Ltd.

Inventor： Yong-Su HAM

IPC: G06F3/01 ,  H04R1/02 ,  H04R17/00

Abstract: A display apparatus includes a display panel configured to display an image and a vibration generating device configured to vibrate the display panel. The vibration generating device includes a plurality of first portions having a piezoelectric characteristic, and a plurality of second portions disposed between the plurality of first portions to have flexibility.

公开(公告)号：US20180120941A1

公开(公告)日：2018-05-03

申请号：US15798151

申请日：2017-10-30

Applicant: LG Display Co., Ltd.

Inventor： Seulgi CHOI ,  Yong-Su HAM ,  Taeheon KIM ,  YongWoo LEE ,  Kyungyeol RYU ,  YuSeon KHO ,  MyungJin LIM

IPC: G06F3/01 ,  G02F1/1333 ,  G02F1/1341 ,  G06F3/041 ,  G06F3/044

CPC classification number: G06F3/016 ,  G02F1/133365 ,  G02F1/13338 ,  G02F2201/503 ,  G06F3/041 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04103 ,  G06F2203/04112

Abstract: Provided are a touch sensitive element and a display device including the same. According to the exemplary embodiment of the present disclosure, a touch sensitive element, includes: an electroactive layer which is formed of electroactive polymer (EAP); an electrode which is disposed on at least one surface of the electroactive layer; and a hard coating layer which is disposed on the electroactive layer and the electrode and has a negative coefficient of thermal expansion (CTE). Therefore, vibration effect in a vertical direction is maximized and impact resistance may be improved.

公开(公告)号：US20240019936A1

公开(公告)日：2024-01-18

申请号：US18357939

申请日：2023-07-24

Applicant: LG Display Co., Ltd.

Inventor： Yong-Su HAM

IPC: G06F3/01 ,  H04R1/02 ,  H04R17/00

CPC classification number: G06F3/016 ,  H04R1/028 ,  H04R17/00 ,  H04R2499/15 ,  G06F3/041

Abstract: A display apparatus includes a display panel configured to display an image and a vibration generating device configured to vibrate the display panel. The vibration generating device includes a plurality of first portions having a piezoelectric characteristic, and a plurality of second portions disposed between the plurality of first portions to have flexibility.

公开(公告)号：US20230419718A1

公开(公告)日：2023-12-28

申请号：US18244003

申请日：2023-09-08

Applicant: LG Display Co., Ltd.

Inventor： YuSeon KHO ,  Yong-Su HAM ,  YongWoo LEE

IPC: G06V40/13 ,  G06F3/16 ,  G06F3/01

CPC classification number: G06V40/1306 ,  G06F3/16 ,  G06F3/016 ,  A61B5/1172

Abstract: A composite piezoelectric element and an electronic device having the same are disclosed, in which the composite piezoelectric element includes insulating films and piezoelectric bodies, which are alternately arranged, wherein the piezoelectric bodies may be categorized into general piezoelectric bodies used as at least one of a haptic actuator, a speaker actuator and a receiver actuator, and a finger scan recognition piezoelectric body for finger scan recognition.

公开(公告)号：US20230217185A1

公开(公告)日：2023-07-06

申请号：US17980488

申请日：2022-11-03

Applicant: LG Display Co., Ltd.

Inventor： HwaYoul LEE ,  YongWoo LEE ,  Yong-Su HAM ,  Seunghyun SUNG

IPC: H04R17/00

CPC classification number: H04R17/00 ,  H04R2499/15

Abstract: An apparatus includes a vibration portion, a first protection member covering a first surface of the vibration portion, and a second protection member covering a second surface of the vibration portion, wherein at least one of the first protection member and the second protection member includes a first layer including a metal material or an inorganic material.

公开(公告)号：US20230211376A1

公开(公告)日：2023-07-06

申请号：US17992195

申请日：2022-11-22

Applicant: LG Display Co., Ltd.

Inventor： Seunghyun SUNG ,  Yong-Su HAM

IPC: B06B1/06 ,  H04R17/00 ,  H04R1/28

CPC classification number: B06B1/0622 ,  H04R17/005 ,  H04R1/2811 ,  H04R2499/15

Abstract: An apparatus may include a vibration member and a vibration apparatus provided at a rear surface of the vibration member to vibrate the vibration member. The vibration apparatus may include at least one or more first vibration portions and a plurality of second vibration portions different from the at least one or more first vibration portions. The at least one or more first vibration portions may be at a periphery of, or may be adjacent to, the plurality of second vibration portions.