公开(公告)号：US10747347B2

公开(公告)日：2020-08-18

申请号：US16142640

申请日：2018-09-26

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  SoonDong Cho ,  Wonyong Jang

IPC: G06F3/041 ,  G06F3/044 ,  G09G5/00

Abstract: Disclosed are a touch display device, a touch display panel, and a driving circuit. More specifically, the present disclosure provides a touch display device, a touch display panel, and a driving circuit which can simultaneously perform display driving and touch driving through a ground modulation technique.

公开(公告)号：US20220208052A1

公开(公告)日：2022-06-30

申请号：US17458118

申请日：2021-08-26

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  SoonDong Cho

IPC: G09G3/20

Abstract: Embodiments of the present disclosure relate to a level shifter and a display device capable of differently controlling a signal waveform between a first clock signal and a second clock signal used to output a first gate signal and a second gate signal. Accordingly, it is possible to reduce the variation in output characteristics between the first gate signal and the second gate signal, thereby improving image quality.

公开(公告)号：US20220059644A1

公开(公告)日：2022-02-24

申请号：US17377165

申请日：2021-07-15

Applicant: LG Display Co., Ltd.

Inventor： JungJae Kim ,  SoonDong Cho ,  JaeWon Han ,  MinGyu Park

IPC: H01L27/32

Abstract: A tiling display device comprises a plurality of display devices, and a main circuit board driving the plurality of display devices. Each of the plurality of display devices includes a display panel that displays an image, a plurality of flexible films bonded to a rear surface of the display panel, and a printed circuit board electrically connected to the plurality of flexible films. A plurality of printed circuit boards of the plurality of display devices are cascaded to each other and the plurality of printed circuit boards have a same shape. Therefore, the efficiency of a manufacturing process of the plurality of printed circuit boards provided in a tiling display device can be improved.

公开(公告)号：US12111528B2

公开(公告)日：2024-10-08

申请号：US17377165

申请日：2021-07-15

Applicant: LG Display Co., Ltd.

Inventor： JungJae Kim ,  SoonDong Cho ,  JaeWon Han ,  MinGyu Park

IPC: G02F1/1333 ,  H10K59/18 ,  H10K59/131

CPC classification number: G02F1/13336 ,  H10K59/18 ,  H10K59/131

Abstract: A tiling display device comprises a plurality of display devices, and a main circuit board driving the plurality of display devices. Each of the plurality of display devices includes a display panel that displays an image, a plurality of flexible films bonded to a rear surface of the display panel, and a printed circuit board electrically connected to the plurality of flexible films. A plurality of printed circuit boards of the plurality of display devices are cascaded to each other and the plurality of printed circuit boards have a same shape. Therefore, the efficiency of a manufacturing process of the plurality of printed circuit boards provided in a tiling display device can be improved.

公开(公告)号：US10055056B2

公开(公告)日：2018-08-21

申请号：US15167341

申请日：2016-05-27

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  SoonDong Cho ,  Wonyong Jang

IPC: G09G3/36 ,  G09G3/3275 ,  G06F3/041 ,  G06F1/32 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F1/3262 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04102 ,  G06F2203/04103

Abstract: The present embodiments relate to a display device, a touch sensing circuit, and a driving method, and more specifically, to a display device, a touch sensing circuit, and a driving method, which may: detect the power mode; create touch driving signals that have different amplitudes depending on the detected power mode; and drive touch electrodes for sensing the touch by using the created touch driving signals in order to thereby provide a high touch sensitivity regardless of the type of power mode.

公开(公告)号：US12051357B2

公开(公告)日：2024-07-30

申请号：US18201011

申请日：2023-05-23

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Sang-Uk Lee ,  Taehwa Park ,  SoonDong Cho ,  Wonyong Jang

IPC: G09G3/20 ,  G09G3/36 ,  H02M3/156 ,  H02M3/158

CPC classification number: G09G3/2096 ,  G09G3/3696 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2330/021 ,  G09G2360/10

Abstract: A power supply includes a first converter configured to convert an input voltage into a first output voltage, a first feedback circuit configured to output a first pulse width modulation (PWM) signal to the first converter to control a level of the first output voltage, and a mode controller configured to compare the input voltage and a reference voltage and determine whether the first converter operates in a first mode or a second mode based on the compared result. When the input voltage is less than or equal to the reference voltage, the first converter boosts the input voltage and outputs the boosted voltage as the first output voltage in the first mode. Further, when the input voltage is greater than the reference voltage, the first converter bypasses the input voltage and outputs the bypassed voltage as the first output voltage in the second mode.

公开(公告)号：US11699384B2

公开(公告)日：2023-07-11

申请号：US17941903

申请日：2022-09-09

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  Sang-Uk Lee ,  Taehwa Park ,  SoonDong Cho ,  Wonyong Jang

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2330/021 ,  G09G2360/10

Abstract: A display device can include a display panel having a plurality of pixels disposed on a substrate, and a power supplier configured to supply a driving voltage to the display panel. The power supplier can include a first converter configured to receive an input voltage supplied from an external system and convert the input voltage into a boost voltage, a second converter configured to convert the boost voltage into the driving voltage, a first feedback unit configured to output a first pulse width modulation (PWM) signal to the first converter so that the boost voltage is proportional to a first reference voltage, and a second feedback unit configured to output a second PWM signal to the second converter so that the driving voltage is proportional to a second reference voltage.

公开(公告)号：US11150757B2

公开(公告)日：2021-10-19

申请号：US16926397

申请日：2020-07-10

Applicant: LG Display Co., Ltd.

Inventor： Hoon Jang ,  SoonDong Cho ,  Wonyong Jang

IPC: G06F3/041 ,  G09G5/00 ,  G06F3/044

Abstract: Disclosed are a touch display device, a touch display panel, and a driving circuit. More specifically, the present disclosure provides a touch display device, a touch display panel, and a driving circuit which can simultaneously perform display driving and touch driving through a ground modulation technique.