公开(公告)号：US11568824B2

公开(公告)日：2023-01-31

申请号：US17500265

申请日：2021-10-13

Applicant: LG DISPLAY CO., LTD.

Inventor： Daekyu Kim ,  Kyuhan Yoon

IPC: G09G3/3266

Abstract: An electroluminescence display device comprises a light emitting diode having an anode connected to a node A, and a pixel driving circuit supplying a driving current to the node A and including a node B, a node C and a node D. The pixel driving circuit includes a driving transistor controlled by a voltage supplied to the node B, a first transistor turned on by a first scan signal, supplying a data voltage to the node C, a second transistor turned on by a second scan signal, electronically connecting the node B with the node C, a third transistor turned on by an emission signal, electronically connecting the node D with a node E, a fourth transistor turned on by a C signal, supplying a reference voltage to the node E, a storage capacitor connected to the node B and the node D, and a capacitor connected to the node C and a reference voltage line to which the reference voltage is supplied. In this case, the emission signal includes a pulse overlapping with the first scan signal and the second scan signal, and the C signal includes a pulse overlapping with the emission signal without overlapping with the first scan signal and the second scan signal.

公开(公告)号：US10565929B2

公开(公告)日：2020-02-18

申请号：US16016438

申请日：2018-06-22

Applicant: LG Display Co., Ltd.

Inventor： Daekyu Kim ,  Jungchul Kim ,  Heekwang Kang ,  Junyoung Kwon

IPC: G09G3/32 ,  G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

Abstract: An organic light emitting display comprises a display panel having a plurality of pixels, a gate drive circuit that drives scan lines and emission lines on the display panel, and a data drive circuit that drives data lines on the display panel, (n−1)th and nth pixels arranged in a row, a transistor array having a driving transistor, a sampling transistor, and a first initial transistor, and a capacitor connected between an initial voltage input terminal and the sampling transistor. A gate electrode of the first initial transistor for initializing the driving transistor of the nth pixel is connected to a scan line in the (n−1)th pixel.

公开(公告)号：US10741123B2

公开(公告)日：2020-08-11

申请号：US16039944

申请日：2018-07-19

Applicant: LG Display Co., Ltd.

Inventor： Suhwan Moon ,  Minho Lee ,  Daekyu Kim ,  Yeyeong Kim

IPC: G09G3/32 ,  G09G3/20 ,  H01L27/32 ,  H01L27/12 ,  G09G3/3233 ,  H01L51/52 ,  G09G3/3258

Abstract: A gate driver and a display device including the same are disclosed. The gate driver includes a plurality of stages. Each stage includes a first transistor outputting a first clock signal as a scan signal in accordance with a first node, a second transistor outputting a gate-off voltage as the scan signal in accordance with a second node which is activated as opposed to the first node, a first controller activating the first node to a gate-on voltage in response to a start signal or a carry signal and a fourth clock signal, and a second controller activating the second node to the gate-on voltage in response to a second clock signal and a third clock signal.

公开(公告)号：US10032413B2

公开(公告)日：2018-07-24

申请号：US15164704

申请日：2016-05-25

Applicant: LG Display Co., Ltd.

Inventor： Daekyu Kim ,  Jungchul Kim ,  Heekwang Kang ,  Junyoung Kwon

IPC: G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291

CPC classification number: G09G3/3241 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0814 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0256 ,  G09G2310/0262 ,  G09G2310/0278 ,  G09G2320/0238 ,  G09G2320/043

Abstract: An organic light emitting display comprises a display panel having a plurality of pixels, a gate drive circuit that drives scan lines and emission lines on the display panel, and a data drive circuit that drives data lines on the display panel, (n−1)th and nth pixels arranged in a row, a transistor array having a driving transistor, a sampling transistor, and a first initial transistor, and a capacitor connected between an initial voltage input terminal and the sampling transistor. A gate electrode of the first initial transistor for initializing the driving transistor of the nth pixel is connected to a scan line in the (n−1)th pixel.

公开(公告)号：US10424243B2

公开(公告)日：2019-09-24

申请号：US15364720

申请日：2016-11-30

Applicant: LG Display Co., Ltd.

Inventor： Daekyu Kim ,  Heekwang Kang ,  Chunghoon Lee ,  Yongjoon Jung

IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3275

Abstract: An organic light emitting diode display is discussed. The organic light emitting diode display includes a display area, in which first scan lines, second scan lines, and emission lines are disposed to intersect data lines, and pixels are disposed in a matrix, a data driver supplying a data voltage to the data lines, and a shift register supplying a first scan signal to the first scan lines, supplying a second scan signal to the second scan lines, and supplying an emission control signal to the emission lines. The shift register includes first scan signal stages sequentially supplying the first scan signal to pixels arranged on two adjacent horizontal lines, second scan signal stages sequentially supplying the second scan signal to the pixels, and an emission control signal stage simultaneously supplying the emission control signal to the pixels.