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：US20240260311A1

公开(公告)日：2024-08-01

申请号：US18634934

申请日：2024-04-13

Applicant: LG Display Co., Ltd.

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

IPC: H10K59/00 ,  G06F3/01 ,  H10K50/842 ,  H10N30/20

CPC classification number: H10K59/00 ,  G06F3/016 ,  H10K50/8426 ,  H10N30/204

Abstract: A display apparatus includes a display panel configured to display an image, a film actuator configured to vibrate the display panel, and a partition configured to surround the film actuator. The film actuator may include a plurality of vibration generating devices configured with a composite film. The plurality of vibration generating devices may be configured to have different expansion coefficients. The composite film may include a plurality of vibration portions configured to have a piezoelectric characteristic and a plurality of expansion portions configured to have flexibility and overlap with the plurality of vibration portions.

公开(公告)号：US20240260310A1

公开(公告)日：2024-08-01

申请号：US18634933

申请日：2024-04-13

Applicant: LG Display Co., Ltd.

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

IPC: H10K59/00 ,  G06F3/01 ,  H10K50/842 ,  H10N30/20

CPC classification number: H10K59/00 ,  G06F3/016 ,  H10K50/8426 ,  H10N30/204

Abstract: A display apparatus includes a display panel configured to display an image and a film actuator configured to vibrate the display panel. The film actuator may include a plurality of vibration generating devices configured with a composite film. The plurality of vibration generating devices may be configured to have different expansion coefficients. The composite film may include a plurality of vibration portions configured to have a piezoelectric characteristic and a plurality of expansion portions configured to have flexibility and overlap with the plurality of vibration portions.

公开(公告)号：US20240098405A1

公开(公告)日：2024-03-21

申请号：US18515239

申请日：2023-11-20

Applicant: LG Display Co., Ltd.

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

IPC: H04R1/28 ,  H04R3/00 ,  H04R17/00

CPC classification number: H04R1/2811 ,  H04R3/00 ,  H04R17/005 ,  H04R1/323

Abstract: A vibration apparatus comprises a lower vibration structure, an upper vibration structure on the lower vibration structure, and an adhesive member between the lower vibration structure and the upper vibration structure. The lower vibration structure and the upper vibration structure are configured to generate sound waves having different frequencies.

公开(公告)号：US20230388718A1

公开(公告)日：2023-11-30

申请号：US18234203

申请日：2023-08-15

Applicant: LG Display Co., Ltd.

Inventor： Chiwan KIM ,  Kyungyeol RYU ,  YuSeon KHO ,  YongGyoon JANG

IPC: H04R17/00 ,  G06F3/01 ,  H04R1/20 ,  H10N30/80

CPC classification number: H04R17/00 ,  G06F3/016 ,  H04R1/20 ,  H10N30/80

Abstract: A display apparatus includes: a display panel configured to display an image, and at least one vibration module on a rear surface of the display panel, the at least one vibration module including a piezoelectric composite layer including a plurality of sub-modules configured to vibrate the display panel, each of the plurality of sub-modules including: a plurality of first portions including a piezoelectric characteristic, and a plurality of second portions having flexibility, each of the plurality of second portions being between a respective pair of the plurality first portions, wherein the plurality of first portions in the respective sub-modules are arranged in a same direction or are partially arranged in different directions.

公开(公告)号：US20230217187A1

公开(公告)日：2023-07-06

申请号：US18086585

申请日：2022-12-21

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

Inventor： YongWoo LEE ,  SeungRyull PARK ,  Yong-Su HAM ,  YuSeon KHO ,  Seunghyun SUNG ,  Sahn NAHM ,  Dae-Su KIM ,  Hosung SHIN ,  Jae Min EUM ,  Su-Hwan GO

IPC: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/626 ,  H10N30/853 ,  H10N30/097 ,  H04R1/02

CPC classification number: H04R17/00 ,  C04B35/495 ,  C04B35/64 ,  C04B35/6261 ,  H01L41/1873 ,  H01L41/43 ,  H04R1/028 ,  C04B2235/3255 ,  C04B2235/3248 ,  C04B2235/6027 ,  C04B2235/6567 ,  C04B2235/85 ,  C04B2235/765 ,  H04R2499/15

Abstract: A piezoelectric material composition, a method of manufacturing the same, a piezoelectric device, and apparatus including the piezoelectric device. The piezoelectric device may include a piezoelectric device layer including a first material and a second material surrounded by the first material, a first electrode portion disposed at a first surface of the piezoelectric device layer, and a second electrode portion disposed at a second surface of the piezoelectric device layer opposite to the first surface, wherein the piezoelectric device layer comprises a piezoelectric material composition represented by Chemical Formula 1: 0.96(NaaK1-a)(Nbb(T1-b))O3-(0.04-x)MZrO3-x(BicAg1-c)ZrO3+d mol % NaNbO3, wherein T is Sb or Ta, M is Sr, Ba or Ca, a is 0.4≤a≤0.6, b is 0.90≤b≤0.98, c is 0.4≤c≤0.6, d is 0≤d≤5.0, and x is 0≤x≤0.04 and wherein T is Sb or Ta and M is Sr, Ba, or Ca.

公开(公告)号：US20230019257A1

公开(公告)日：2023-01-19

申请号：US17851822

申请日：2022-06-28

Applicant: LG Display Co., Ltd.

Inventor： Minji KIM ,  YoungWook HA ,  Chiwan KIM ,  GyungBo HA ,  MinHo SOHN ,  MinKyu CHOI ,  Jeonggoo KANG ,  YuSeon KHO ,  YeongRak CHOI ,  Seungo JEON ,  Kwangho KIM ,  JunSeok OH

IPC: H04R17/00 ,  H04R3/00 ,  H04R1/24 ,  H04R31/00

Abstract: A vibration apparatus may include a vibration plate, a vibration generator at the vibration plate, and a connection member between the vibration plate and the vibration generator. The vibration generator may include a vibration structure. The connection member may include a first connection member between the vibration plate and the vibration structure and overlapping the vibration structure. The connection member may also include a second connection member surrounding the first connection member. A modulus of the first connection member may be greater than a modulus of the second connection member.

公开(公告)号：US20220279259A1

公开(公告)日：2022-09-01

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 ,  H01L41/09 ,  H01L27/20 ,  H01L41/053 ,  H01L41/193

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：US20220182766A1

公开(公告)日：2022-06-09

申请号：US17676816

申请日：2022-02-22

Applicant: LG Display Co., Ltd.

Inventor： Sung Eui SHIN ,  Taeheon KIM ,  Kyungyeol RYU ,  YongGyoon JANG ,  Chiwan KIM ,  YongWoo LEE ,  YuSeon KHO

IPC: H04R17/00 ,  H04R1/02 ,  H04R7/04

Abstract: A display apparatus including a flexible vibration module and a method of manufacturing the flexible vibration module are provided. A display apparatus includes: a display panel configured to display an image, and a flexible vibration module on a rear surface of the display panel, the flexible vibration module configured to vibrate the display panel, the flexible vibration module including: a plurality of first portions having a piezoelectric characteristic, and a plurality of second portions respectively between pairs of the plurality of first portions, the plurality of second portions having flexibility.

公开(公告)号：US20200209973A1

公开(公告)日：2020-07-02

申请号：US16720587

申请日：2019-12-19

Applicant: LG Display Co., Ltd.

Inventor： Chiwan KIM ,  Taeheon KIM ,  Sung-Eui SHIN ,  YongWoo LEE ,  Kyungyeol Ryu ,  YuSeon KHO ,  YongGyoon JANG

IPC: G06F3/01 ,  B06B1/06 ,  H01L27/32 ,  G02F1/1368 ,  G02F1/1333 ,  G06F3/041 ,  B60K37/04

Abstract: The present disclosure relates to a vibration generation device, a display apparatus including the vibration generation device, and a vehicle including the vibration generation device. A vibration generation device includes a piezoelectric ceramic part having a certain interval, a piezoelectric material layer between the piezoelectric ceramic parts, and an electrode part configured to provide electric field to one or more of the piezoelectric ceramic part and the piezoelectric material layer.