公开(公告)号：US11670235B2

公开(公告)日：2023-06-06

申请号：US17852771

申请日：2022-06-29

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Dong Hyun Lee

IPC: G09G3/3258 ,  G09G3/3291

CPC classification number: G09G3/3258 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2310/027

Abstract: Disclosed are a pixel circuit and a display device including the same. The pixel circuit includes a driving element including a first electrode connected to a first node, a gate electrode connected to a second node, and a second electrode connected to a third node; a first switch element including a first electrode connected to a fourth node, a gate electrode to which a scan pulse is applied, and a second electrode connected to the first node, and configured to be turned on according to a gate-on voltage of the scan pulse while a threshold voltage of the driving element is sensed; and a first capacitor connected between the second node and the fourth node.

公开(公告)号：US11862104B2

公开(公告)日：2024-01-02

申请号：US17954284

申请日：2022-09-27

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Hun Ki Shin

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

CPC classification number: G09G3/3266 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2310/0278

Abstract: A gate driver may include: a controller to charge and discharge a first control node that pulls up an output voltage and a second control node that pulls down the output voltage; a first output unit having a first pull-up transistor to apply a gate high voltage to an output node in response to a charging voltage of the first control node, and a first pull-down transistor to apply a gate low voltage to the output node in response to a charging voltage of the second control node; and a switch unit to change a current path between a first output node and a first power line to which a high potential voltage is applied or a second power line to which a first clock signal is applied according to a carry signal transmitted from a previous signal transmission unit and a voltage level of the second control node.

公开(公告)号：US20210408163A1

公开(公告)日：2021-12-30

申请号：US17345864

申请日：2021-06-11

Applicant: LG Display Co., Ltd.

Inventor： Seung Ho Heo ,  Chung Hoon Lee ,  Dong Hyun Lee ,  Dong Min Jang

IPC: H01L27/32 ,  H01L51/50

Abstract: Disclosed is a light emitting display device which may prevent or at least reduce lateral leakage current. The light emitting display device includes a substrate comprising a plurality of first to third subpixels arranged to neighbor one another, each of the first to third subpixels comprising an emission part and a non-emission part to surround the emission part; a bank at the non-emission parts; first electrodes covered with the bank and respectively at the first to third subpixels to expose the respective emission parts; a first spacer structure having an inversed tapered shape configured to surround at least one side of each of the emission parts of the first to third subpixels on the bank; a common layer structure located on the first electrodes and the first spacer structure and disconnected at an edge of the first spacer structure; and a second electrode on the common layer structure.

公开(公告)号：US12288524B2

公开(公告)日：2025-04-29

申请号：US18489595

申请日：2023-10-18

Applicant: LG Display Co., Ltd.

Inventor： Seung Ho Heo ,  Dong Hyun Lee

IPC: G09G3/3258 ,  G09G3/3241

Abstract: Disclosed is a pixel circuit and a display device including the pixel circuit. The pixel circuit includes: a driving element; a light emitting element; a first capacitor connected between a second node and a fourth node; a second capacitor connected between a third node and the fourth node; a first switch element connected between the second node and a data line; a second switch element connected between the fourth node and a third voltage node; a third switch element connected between the third node and a fourth voltage node; a fourth switch element connected between the second node and the third voltage node; and a fifth switch element connected between the third node and an anode electrode of a light emitting element. In various embodiments, one or more the second third, fourth.

公开(公告)号：US12243489B2

公开(公告)日：2025-03-04

申请号：US17848175

申请日：2022-06-23

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Dong Hyun Lee ,  Seok Noh ,  Ki Min Son ,  Hun Ki Shin

IPC: G09G3/3266 ,  G09G3/3233

Abstract: Provided are a gate driving circuit and a display device including the same. The gate driving circuit includes a first controller configured to control a first control node to act as a pull-up control node to turn on a first transistor when an activation clock is input to the first controller for a first unit time, and to be deactivated when a deactivation clock is input thereto for a second unit time; and a second controller configured to control a second control node to act as a pull-up control node to turn on a second transistor when the activation clock is input to the second controller for the second unit time, and to be deactivated when the deactivation clock is input thereto for the first unit time.

公开(公告)号：US11810518B2

公开(公告)日：2023-11-07

申请号：US17952440

申请日：2022-09-26

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Dong Hyun Lee

IPC: G09G3/3266 ,  G09G3/3225

CPC classification number: G09G3/3266 ,  G09G3/3225 ,  G09G2300/0408 ,  G09G2300/0426 ,  G09G2310/0289 ,  G09G2310/08 ,  G09G2320/043

Abstract: A gate driving circuit according to an embodiment and a display panel including the same are disclosed. The gate driving circuit according to the embodiment includes: a controller configured to charge and discharge a first control node that pulls up an output voltage and a second control node that pulls down the output voltage; an output unit including a pull-up transistor configured to apply a gate high voltage to an output node in response to a charging voltage of the first control node, and a pull-down transistor configured to apply a gate low voltage to the output node in response to a charging voltage of the second control node; a sensing unit configured to sense a threshold voltage of the pull-down transistor; and a compensation unit configured to change the charging voltage of the second control node in response to an output of the sensing unit.

公开(公告)号：US11830436B2

公开(公告)日：2023-11-28

申请号：US17901517

申请日：2022-09-01

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Dong Hyun Lee

IPC: G09G3/3266 ,  G11C19/28

CPC classification number: G09G3/3266 ,  G11C19/28 ,  G09G2300/0852 ,  G09G2310/0286

Abstract: A gate driver includes a first shift register to supply a gate signal to a plurality of gate lines through output nodes, and a second shift register to supply the gate signal to the gate lines through output nodes. The gate signal is supplied from the first shift register to one side of an i-th gate line and supplied from the second shift register to the other side of the i-th gate line, then the gate signal is supplied from the second shift register to the other side of the i-th gate line, then the gate signal is supplied from the first shift register to one side of the i-th gate line, and then, the gate signal is supplied from the first shift register to one side of the i-th gate line and simultaneously supplied from the second shift register to the other side of the i-th gate line.

公开(公告)号：US11715428B2

公开(公告)日：2023-08-01

申请号：US17947786

申请日：2022-09-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Seung Ho Heo ,  Dong Hyun Lee

IPC: G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G2300/0426 ,  G09G2300/0852 ,  G09G2310/0278

Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit includes: a first driving element including a first electrode connected to a 1-1 th node, a gate electrode connected to a 1-2 th node, and a second electrode connected to a 1-3 th node; and a second driving element including a first electrode connected to a 2-1 th node, a gate electrode connected to a 2-2 th node, and a second electrode connected to a second-third node. A second electrode voltage of the first driving element is transmitted to the gate electrode of the second driving element, and a second electrode voltage of the second driving element is transmitted to the gate electrode of the first driving element.