公开(公告)号：US11462675B2

公开(公告)日：2022-10-04

申请号：US16886150

申请日：2020-05-28

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: H01L41/187 ,  G06F3/041 ,  G10K9/122 ,  G06F1/16 ,  G06F3/01

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：US11275921B2

公开(公告)日：2022-03-15

申请号：US16940955

申请日：2020-07-28

Applicant: LG Display Co., Ltd.

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

IPC: G06K9/20 ,  G06K9/00 ,  H04R7/04 ,  H04R17/00

Abstract: A piezoelectric panel speaker and an electronic apparatus including the same are disclosed. The piezoelectric panel speaker may include a piezoelectric panel including at least one hole and configured to vibrate, and a fingerprint sensor accommodated into the one hole and configured to sense biometric information.

公开(公告)号：US11006223B2

公开(公告)日：2021-05-11

申请号：US16855842

申请日：2020-04-22

Applicant: LG DISPLAY CO., LTD.

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

IPC: H04R19/02 ,  H04R1/02 ,  H04R9/02 ,  H04R9/06

Abstract: A vibration generating device includes an electroactive layer having a first surface and a second surface opposite to the first surface, and including an unevenness structure; and a first electrode and a second electrode on at least one of the first surface and the second surface of the electroactive layer, wherein one or more of the first electrode and the second electrode covers an entire surface of at least one or more of the first surface and the second surface of the electroactive layer including the unevenness structure.

公开(公告)号：US10824033B2

公开(公告)日：2020-11-03

申请号：US15826278

申请日：2017-11-29

Applicant: LG DISPLAY CO., LTD. ,  INDUSTRIAL COOPERATION FOUNDATION CHONBUK NATIONAL UNIVERSITY

Inventor： Jihoon Lee ,  Hyungmin Kim ,  Jongyoon Kim ,  Jonghoon Woo ,  Chiwan Kim ,  Sungeui Shin ,  Seongil Kim ,  Jaebin Song

IPC: G02F1/1334 ,  G02F1/1347 ,  G02F1/137

Abstract: A mirror cell and a display device are disclosed. The mirror cell includes a lower substrate, which includes a lower alignment film and a lower electrode, an upper substrate, which opposes the lower substrate and includes an upper alignment film and an upper electrode, a liquid crystal layer, which is disposed between the lower alignment film and the upper alignment film and includes a cholesteric liquid crystal and a reactive liquid crystal, and a reactive layer, which is disposed between the upper alignment film and the liquid crystal layer and includes a same kind of reactive liquid crystals as the reactive liquid crystal in the liquid crystal layer.

公开(公告)号：US12069953B2

公开(公告)日：2024-08-20

申请号：US18242508

申请日：2023-09-05

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 ,  G06F1/16 ,  G06F3/01 ,  G06F3/041 ,  G10K9/122

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：US12039101B2

公开(公告)日：2024-07-16

申请号：US17359243

申请日：2021-06-25

Applicant: LG Display Co., Ltd.

Inventor： Chiwan Kim ,  Taeheon Kim ,  Sung-Eui Shin ,  Yongwoo Lee ,  Kyungyeol Ryu ,  Yuseon Kho ,  Yonggyoon Jang

IPC: H04R17/00 ,  B06B1/06 ,  B60K35/50 ,  B60Q5/00 ,  G02F1/1333 ,  G02F1/1368 ,  G06F3/01 ,  G06F3/041 ,  H10K59/12 ,  H10K59/40 ,  B60K35/10 ,  B60K35/22 ,  B60K35/25 ,  B60K35/60 ,  B60R11/00 ,  B60R11/02 ,  G06F3/044 ,  H04R7/04

CPC classification number: G06F3/016 ,  B06B1/0688 ,  B60K35/50 ,  B60Q5/00 ,  G02F1/13338 ,  G02F1/1368 ,  G06F3/0416 ,  H04R17/00 ,  H10K59/12 ,  H10K59/40 ,  B60K35/10 ,  B60K35/22 ,  B60K35/25 ,  B60K35/60 ,  B60K2360/1438 ,  B60K2360/77 ,  B60R2011/0005 ,  B60R2011/0021 ,  B60R11/0217 ,  G06F3/0443 ,  H04R7/045 ,  H04R2499/13 ,  H04R2499/15

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.

公开(公告)号：US11974066B2

公开(公告)日：2024-04-30

申请号：US17145623

申请日：2021-01-11

Applicant: LG Display Co., Ltd.

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

IPC: H04N5/64 ,  G02F1/1333 ,  H04R1/02 ,  H04R17/00 ,  H10K50/84

CPC classification number: H04N5/642 ,  G02F1/133308 ,  H04R1/025 ,  H04R17/00 ,  H10K50/841 ,  G02F1/133314 ,  H04R2499/15

Abstract: A display apparatus includes a display panel, a back cover accommodating the display panel, and a sound output unit including at least one sound output module disposed to overlap the display panel. The at least one sound output module includes a support plate including an uneven surface and a piezoelectric element attached on the uneven surface of the support plate and has a shape corresponding to the uneven surface of the support plate. Accordingly, a sound having a straight characteristic within an audible frequency domain may be output, thereby enhancing a sense of reality and an immersion of a viewer watching an image displayed by the display apparatus.

公开(公告)号：US11924609B2

公开(公告)日：2024-03-05

申请号：US17346043

申请日：2021-06-11

Applicant: LG Display Co., Ltd.

Inventor： Chiwan Kim ,  Kyungyeol Ryu ,  YuSeon Kho ,  YongGyoon Jang

IPC: H04R17/00 ,  G06F1/16 ,  G06F3/16 ,  G09G3/20 ,  H04R1/02

CPC classification number: H04R17/00 ,  G06F3/16 ,  H04R1/028 ,  G06F1/1601 ,  G09G3/2092 ,  G09G2380/02 ,  H04R2499/15

Abstract: A display apparatus includes: a display panel configured to be rolled or unrolled, at least one vibration module on a rear surface of the display panel, the at least one vibration module being configured to: be rolled or unrolled with the display panel, and vibrate the display panel, and a partition on the rear surface of the display panel, the partition being spaced apart from and surrounding the at least one vibration module, wherein the at least one vibration module includes: a plurality of first portions having a piezoelectric property, and a plurality of second portions between the plurality of first portions, the plurality of second portions having flexibility.

公开(公告)号：US11770656B2

公开(公告)日：2023-09-26

申请号：US17463546

申请日：2021-08-31

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：US11140492B2

公开(公告)日：2021-10-05

申请号：US16654562

申请日：2019-10-16

Applicant: LG Display Co., Ltd.

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

IPC: H04R17/00 ,  H04R1/02

Abstract: A display apparatus includes a display panel including configured to display an image and a sound generating device on a rear surface of the display panel, the sound generating device being configured to vibrate the display panel to generate sound. The sound generating device includes a first structure and a second structure over or under the first structure, the second structure including a first part having a piezoelectric characteristic and a second part between adjacent first parts to have flexibility.