公开(公告)号：US11935482B2

公开(公告)日：2024-03-19

申请号：US17954272

申请日：2022-09-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Woo Kyu Sang ,  Moon Soo Chung

IPC: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3275

CPC classification number: G09G3/3258 ,  G09G3/3266 ,  G09G3/3291 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2310/0264 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2310/08 ,  G09G2330/021

Abstract: A pixel circuit includes a first switch element turned on by a gate-on voltage of a first scan pulse to apply a data voltage to a first node; a second switch element turned on by a gate-on voltage of a second scan pulse to connect a second node to a third node; a third switch element turned on by a gate-on voltage of a light-emitting control pulse to apply a reference voltage to the first node; a fourth switch element turned on by the gate-on voltage of the light-emitting control pulse to connect the third node to a fourth node; and a fifth switch element turned on by a gate-on voltage of the second scan pulse to apply the reference voltage to the fourth node. A voltage higher than or equal to the pixel driving voltage is applied to the third node before generation of the first scan pulse.

公开(公告)号：US12039940B2

公开(公告)日：2024-07-16

申请号：US18336734

申请日：2023-06-16

Applicant: LG Display Co., Ltd.

Inventor： Woo Kyu Sang ,  Moon Soo Chung ,  Tae Hun Kim

IPC: G09G3/32 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2310/0278 ,  G09G2310/061 ,  G09G2320/0247 ,  G09G2330/021

Abstract: A light-emitting display device includes a display panel including a plurality of subpixels each including a light-emitting element, a data driver configured to supply a data voltage and a reset voltage to each of the subpixels, and a scan driver configured to output an emission signal for controlling a non-emission period and an emission period of the light-emitting element and a reset signal for controlling a reset period of each of the subpixels, wherein the scan driver outputs the emission signal a plurality of times in one frame period and outputs the reset signal a plurality of times in a non-emission period according to the emission signal, and at least one of a plurality of emission signals or a plurality of reset signals has at least one of a different delay period or a different pulse width.

公开(公告)号：US20250118263A1

公开(公告)日：2025-04-10

申请号：US18672748

申请日：2024-05-23

Applicant: LG Display Co., Ltd.

Inventor： Woo Kyu Sang ,  Moon Soo Chung ,  Tae Hun Kim

IPC: G09G3/3258 ,  G09G3/3266 ,  G11C19/28

Abstract: Disclosed a display device and a method of driving the same. Each of sub-pixels in the display device includes: a light-emitting element; a driving element; a first switch element; a second switch element; a third switch element; and a fourth switch element. A gate signal includes: a first-first scan signal applied to a gate electrode of the fourth switch element, a first-second scan signal applied to a gate electrode of the third switch element, a second scan signal applied to a gate electrode of the second switch element, and an emission control signal applied to a gate electrode of the first switch element. A pulse of the first-first scan signal has the same pulse width as a pulse of the first-second scan signal and precedes the pulse of the first-second scan signal.

公开(公告)号：US12094420B2

公开(公告)日：2024-09-17

申请号：US17952454

申请日：2022-09-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Kyu Jin Kim ,  Moon Soo Chung

IPC: G09G3/3266 ,  G09G3/3233

CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0286 ,  G09G2320/0233

Abstract: Provided are a gate driving circuit and a display device including the same. The gate driving circuit includes a first outputter for outputting a first scan pulse that swings between a gate-on voltage and a first gate-off voltage, a second outputter for outputting a second scan pulse that swings between the gate-on voltage and a second gate-off voltage, and a controller for controlling the first and second outputters. The first gate-off voltage is set to be higher or lower than the second gate-off voltage.