公开(公告)号：US11107388B2

公开(公告)日：2021-08-31

申请号：US15498584

申请日：2017-04-27

Applicant: LG Display Co., Ltd.

Inventor： SungHyun Cho ,  ChungSik Kong ,  Byoungwoo Kim ,  Sungwook Chang ,  DongSoo Kim

IPC: G11C19/00 ,  G09G3/20 ,  G11C19/28

Abstract: A gate driving circuit and a display device are disclosed. The gate driving circuit includes a shift register including a plurality of stages. Among the stages, an Nth stage includes a first transistor charging a Q node and a junction stress control circuit. A pull-up transistor using the Q node as a gate input controls an output signal of a stage output terminal. The junction stress control circuit includes a first, second, and third control transistors. The first control transistor, the second control transistor, the third control transistor, and the first transistor are connected to each other through a common node. The second control transistor adjusts junction stresses for the first control transistor and the first transistor by controlling a voltage of the common node. When the second control transistor is turned off, the third control transistor discharges the voltage of the common node.

公开(公告)号：US20220206664A1

公开(公告)日：2022-06-30

申请号：US17559778

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Hojin Jung ,  ChungSik Kong

IPC: G06F3/041 ,  G09G3/20

Abstract: A gate driver includes a plurality of stage groups each including a plurality of stages; and a plurality of start circuits each configured to output a start signal to each of the plurality of stage groups, wherein each of the plurality of start circuits outputs the start signal to an uppermost stage among the plurality of stages of each of the plurality of stage groups, so that an area of the gate driver can be reduced.

公开(公告)号：US12141398B2

公开(公告)日：2024-11-12

申请号：US17559778

申请日：2021-12-22

Applicant: LG Display Co., Ltd.

Inventor： Hojin Jung ,  ChungSik Kong

IPC: G06F3/041 ,  G09G3/20

Abstract: A gate driver includes a plurality of stage groups each including a plurality of stages; and a plurality of start circuits each configured to output a start signal to each of the plurality of stage groups, wherein each of the plurality of start circuits outputs the start signal to an uppermost stage among the plurality of stages of each of the plurality of stage groups, so that an area of the gate driver can be reduced.

公开(公告)号：US10672324B2

公开(公告)日：2020-06-02

申请号：US16107276

申请日：2018-08-21

Applicant: LG DISPLAY CO., LTD.

Inventor： ChungSik Kong ,  MiHee Shin ,  GyuTae Kang

IPC: G09G3/36 ,  G09G3/30 ,  G09G3/3266

Abstract: An electroluminescent display device includes sub-pixels connected to gate lines, and a gate driver configured to supply a scan signal to at least one of the gate lines, and including stages. One of the stages includes a QB-node regulation unit configured to charge a QB-node and a QP-node to turn-on voltage by using a first gate clock signal and a second gate clock signal, and a pull-down unit configured to output a turn-off voltage in response to a voltage of the QP-node. The QB-node regulation unit includes a QP-node control part configured to invert a phase of a voltage of a Q1-node and apply the voltage of the inverted phase to the QP-node, and a QB-node control part configured to bootstrap the QP-node. Accordingly, by employing the gate driver including the QB-node regulation unit that provides a stable voltage to the QB-node and the QP-node, the reliability of the gate driver can be improved, and the bezel of the electroluminescence display device can be reduced.

公开(公告)号：US09958746B2

公开(公告)日：2018-05-01

申请号：US14673653

申请日：2015-03-30

Applicant: LG Display Co., Ltd.

Inventor： ChungSik Kong

IPC: G02F1/1362 ,  G02F1/1335 ,  G02F1/1333 ,  G02F1/1339 ,  G02F1/1337

CPC classification number: G02F1/136227 ,  G02F1/133512 ,  G02F1/133707 ,  G02F2001/133357 ,  G02F2001/13396 ,  G02F2201/40

Abstract: Disclosed herein is a liquid crystal display in which a hole is shared by thin-film transistors to thereby improve the aperture ratio. The liquid crystal display includes a substrate, a first thin-film transistor and a second thin-film transistor on the substrate. In the planarization film, a single hole is disposed to expose a portion of the source electrode or the drain electrode from each of the first thin-film transistor and the second thin-film transistor. Each of the first and second pixel electrodes is connected to the source electrode or the drain electrode of the first and second thin-film transistors via the single hole in the planarization film. Accordingly, the area of a black matrix is reduced and thus the aperture ratio of the liquid crystal display 100 can be improved.

公开(公告)号：US11315459B2

公开(公告)日：2022-04-26

申请号：US16039544

申请日：2018-07-19

Applicant: LG Display Co., Ltd.

Inventor： ChungSik Kong ,  HongGyu Han ,  MiHee Shin ,  SeWan Lee

IPC: G11C19/00 ,  G09G3/20 ,  G09G3/36 ,  G09G3/3266

Abstract: A display panel includes pixels connected to gate lines, and a gate driver that supplies a gate signal to at least one of the gate lines and includes a plurality of stages. Each stage includes a pull-up transistor to apply a turn-on voltage of a first clock signal to an output terminal responsive to a voltage at a Q-node, a pull-down transistor to apply a turn-off voltage to the output terminal responsive to a voltage at a QB-node that holds the turn-on voltage during a period in which the output terminal is applied the turn-off voltage, and a QB-node control unit to apply the turn-on voltage to the QB-node responsive to the first clock signal and a second clock signal in reverse-phase with the first clock signal. Accordingly, a display panel may include a gate driver that can set, reset, and hold the voltage at a QB-node.

公开(公告)号：US20190096306A1

公开(公告)日：2019-03-28

申请号：US16039544

申请日：2018-07-19

Applicant: LG Display Co., Ltd.

Inventor： ChungSik Kong ,  HongGyu Han ,  MiHee Shin ,  SeWan LEE

IPC: G09G3/20

Abstract: A display panel includes pixels connected to gate lines, and a gate driver that supplies a gate signal to at least one of the gate lines and includes a plurality of stages. Each stage includes a pull-up transistor to apply a turn-on voltage of a first clock signal to an output terminal responsive to a voltage at a Q-node, a pull-down transistor to apply a turn-off voltage to the output terminal responsive to a voltage at a QB-node that holds the turn-on voltage during a period in which the output terminal is applied the turn-off voltage, and a QB-node control unit to apply the turn-on voltage to the QB-node responsive to the first clock signal and a second clock signal in reverse-phase with the first clock signal. Accordingly, a display panel may include a gate driver that can set, reset, and hold the voltage at a QB-node.

公开(公告)号：US20150277201A1

公开(公告)日：2015-10-01

申请号：US14673653

申请日：2015-03-30

Applicant: LG Display Co., Ltd.

Inventor： ChungSik Kong

IPC: G02F1/1362 ,  G02F1/1337 ,  G02F1/1335 ,  G02F1/1339 ,  G02F1/1368 ,  G02F1/1343

CPC classification number: G02F1/136227 ,  G02F1/133512 ,  G02F1/133707 ,  G02F2001/133357 ,  G02F2001/13396 ,  G02F2201/40

Abstract: Disclosed herein is a liquid crystal display in which a hole is shared by thin-film transistors to thereby improve the aperture ratio. The liquid crystal display includes a substrate, a first thin-film transistor and a second thin-film transistor on the substrate. In the planarization film, a single hole is disposed to expose a portion of the source electrode or the drain electrode from each of the first thin-film transistor and the second thin-film transistor. Each of the first and second pixel electrodes is connected to the source electrode or the drain electrode of the first and second thin-film transistors via the single hole in the planarization film. Accordingly, the area of a black matrix is reduced and thus the aperture ratio of the liquid crystal display 100 can be improved.

Abstract translation: 这里公开了一种液晶显示器，其中通过薄膜晶体管共享孔，从而提高孔径比。 液晶显示器包括基板，第一薄膜晶体管和第二薄膜晶体管。 在平坦化膜中，设置单个孔以从源极电极或漏极电极的一部分暴露于第一薄膜晶体管和第二薄膜晶体管中的每一个。 第一和第二像素电极中的每一个经由平坦化膜中的单个孔连接到第一和第二薄膜晶体管的源电极或漏电极。 因此，黑矩阵的面积减小，能够提高液晶显示器100的开口率。