公开(公告)号：US20210325968A1

公开(公告)日：2021-10-21

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

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：US20210200265A1

公开(公告)日：2021-07-01

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 ,  G06F3/16 ,  G10K9/122

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：US20210168479A1

公开(公告)日：2021-06-03

申请号：US17177058

申请日：2021-02-16

Applicant: LG Display Co., Ltd.

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

IPC: H04R1/02 ,  H01L41/053 ,  H01L41/193 ,  H04R17/00 ,  H01L41/09 ,  H01L27/20

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：US20200381613A1

公开(公告)日：2020-12-03

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 ,  G06F3/01 ,  G06F1/16 ,  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：US20200314557A1

公开(公告)日：2020-10-01

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 ,  H01L41/047 ,  H01L41/08 ,  H01L41/09 ,  H01L41/37 ,  H01L41/083 ,  H04R7/02 ,  B06B1/06

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.

公开(公告)号：US20190163314A1

公开(公告)日：2019-05-30

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

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：US20190014420A1

公开(公告)日：2019-01-10

申请号：US16029209

申请日：2018-07-06

Applicant: LG DISPLAY CO., LTD.

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

IPC: H04R19/02 ,  H04R1/02

Abstract: Discussed are a film speaker and a display device. The film speaker includes an electroactive layer including a first surface and a second surface opposite to the first surface, and further including a plurality of concave portions; and a first electrode and a second electrode disposed on at least one of the first surface and the second surface. Therefore, the sound generated in the film speaker may be further amplified and the sound pressure level may be improved.