公开(公告)号：US20250131883A1

公开(公告)日：2025-04-24

申请号：US18988159

申请日：2024-12-19

Applicant: LG Display Co., Ltd.

Inventor： Ki Min SON ,  Chang Hee KIM ,  Seok NOH

IPC: G09G3/3233 ,  G09G3/3266

Abstract: A pixel circuit comprises a first switch element comprising a first electrode to which an initialization voltage is applied, a gate electrode to which a initialization pulse is applied, and a second electrode connected to a second node; a second switch element comprising a first electrode connected to a third node or a fourth node, a gate electrode to which a sensing pulse is applied, and a second electrode to which a reference voltage is applied; a third switch element comprising a first electrode to which a data voltage is applied, a gate electrode to which a scan pulse is applied, and a second electrode connected to the second node; and a fourth switch element comprising a first electrode connected to the third node, a gate electrode to which a first emission control pulse is applied, and a second electrode connected to the fourth node.

公开(公告)号：US20240194150A1

公开(公告)日：2024-06-13

申请号：US18471129

申请日：2023-09-20

Applicant: LG Display Co., Ltd.

Inventor： Seok NOH ,  Ki Min SON

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

CPC classification number: G09G3/3266 ,  G09G3/32 ,  G09G3/3291 ,  G09G2310/0267 ,  G09G2310/0275 ,  G09G2310/0286

Abstract: A gate driver according to an embodiment and a display device using the same are disclosed. The gate driver includes a plurality of signal transmitters, wherein an nth signal transmitter includes, a (1-1)th output circuit configured to output a carry signal to a first output node according to a voltage of a first control node and a voltage of a second control node, a (1-2)th output circuit configured to output a boosting signal to a second output node according to a voltage of the first control node and a voltage of the second control node, wherein the (1-2)th output circuit includes a pull-up transistor configured to apply a gate high voltage to the first output node, a pull-down transistor configured to apply a gate low voltage to the first output node, and a first capacitor connected between a gate of the pull-up transistor and the second output node.

公开(公告)号：US20230008511A1

公开(公告)日：2023-01-12

申请号：US17859852

申请日：2022-07-07

Applicant: LG Display Co., Ltd.

Inventor： Ki Won SON ,  Seok NOH ,  Ki Min SON ,  Seo Jun YEOM

IPC: G09G3/3266 ,  G09G3/3291 ,  G09G3/3233

Abstract: A gate driver according to an embodiment and a display device using the same are discussed. The gate driver can output a gate signal to a pixel circuit having a driving element connected between a first power line and a first node, a light-emitting element connected between the first node and a second power line, and a switching element connected between the first node and a third power line and driven by the gate signal. The gate driver includes a first circuit unit to receive a carry signal from a previous signal transmission unit to charge or discharge a first control node and a second control node, and a second circuit unit having a first buffer transistor and a second buffer transistor configured to output the gate signal based on a first clock signal and a first low potential voltage according to potentials of the first and second control nodes.

公开(公告)号：US20190066599A1

公开(公告)日：2019-02-28

申请号：US16116551

申请日：2018-08-29

Applicant: LG Display Co., Ltd.

Inventor： Kyung-Min KIM ,  In-Hyo HAN ,  Seok NOH

IPC: G09G3/3266 ,  H01L27/32 ,  G09G3/3291

CPC classification number: G09G3/3266 ,  G09G3/3291 ,  G09G2300/0408 ,  G09G2300/0439 ,  G09G2310/0286 ,  G09G2310/08 ,  H01L27/3258 ,  H01L27/3276

Abstract: Disclosed herein is an organic light emitting diode (OLED) display device including an OLED display panel including a non-active area and an active area, having a plurality of gate lines and a plurality of data lines disposed in the active area, and having a plurality of subpixels arranged at intersections between the gate lines and the data lines in a matrix, a gate driver disposed in the non-active area of the OLED display panel to supply a scan pulse to the plurality of gate lines, and a bootstrap capacitor for preventing output loss of the scan pulses of the gate driver in the active area of the OLED display panel.