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：US11790686B2

公开(公告)日：2023-10-17

申请号：US17115286

申请日：2020-12-08

Applicant: LG Display Co., Ltd.

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

IPC: H01L41/08 ,  G06V40/13 ,  G06F3/16 ,  G06F3/01 ,  A61B5/1172

CPC classification number: G06V40/1306 ,  G06F3/016 ,  G06F3/16 ,  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：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.

公开(公告)号：US10963052B2

公开(公告)日：2021-03-30

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 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333

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：US10942594B2

公开(公告)日：2021-03-09

申请号：US16201793

申请日：2018-11-27

Applicant: LG Display Co., Ltd.

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

IPC: G06F3/041 ,  G06F3/044 ,  G02F1/1333 ,  H01L27/32

Abstract: A touch panel includes a plurality of first electrodes which extends in a first direction. The touch panel further includes an electroactive layer which is disposed on the plurality of first electrodes and is formed of an electroactive material. The touch panel further includes a plurality of second electrodes which is disposed on the electroactive layer and extends in a second direction which is different from the first direction. The touch panel further includes an insulating layer which is disposed to cover the electroactive layer and the plurality of second electrodes. The touch panel further includes a plurality of third electrodes which is disposed on the insulating layer and extends in the second direction.

公开(公告)号：US10924704B2

公开(公告)日：2021-02-16

申请号：US16716321

申请日：2019-12-16

Applicant: LG Display Co., Ltd.

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

IPC: H04R1/00 ,  H04R25/00 ,  H04N5/64 ,  H01L51/52 ,  G02F1/1333 ,  H04R17/00 ,  H04R1/02

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：US10795470B2

公开(公告)日：2020-10-06

申请号：US16019935

申请日：2018-06-27

Applicant: LG DISPLAY CO., LTD.

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

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

Abstract: Provided are a touch sensitive device and a display device including the touch sensitive device. The touch sensitive device according to an embodiment of the present disclosure includes an electro-active layer formed of polyphosphazene substituted with an aryloxy group at a phosphorus atom in the backbone of the polyphosphazene, and electrodes disposed on at least one surface of the electro-active layer. The touch sensitive device according to an embodiment of the present disclosure has an excellent intensity of vibrations due to characteristics of the polyphosphazene including the substituted aryloxy group and is flame retardant and non-toxic.

公开(公告)号：US10771902B1

公开(公告)日：2020-09-08

申请号：US16447353

申请日：2019-06-20

Applicant: LG Display Co., Ltd.

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

IPC: H04R17/00 ,  H04R7/02 ,  H01L41/047 ,  H01L41/08 ,  H01L41/09 ,  H01L41/37 ,  B06B1/06 ,  H01L41/083

Abstract: A display apparatus includes a display module having a display panel configured to display an image, a sound generation module disposed at the display module and configured to vibrate the display module to generate sound, a first cover configured to cover a first periphery portion of the display module, and a plurality of ultrasonic generation modules disposed between the first periphery portion of the display module and the first cover. The first cover includes a plurality of first holes overlapping with the plurality of ultrasonic generation modules.