公开(公告)号：US09601058B2

公开(公告)日：2017-03-21

申请号：US15169082

申请日：2016-05-31

Applicant: LG DISPLAY CO., LTD.

Inventor： Byung Jae Lee ,  Jun Hyeok Yang ,  Tae Gung Kim ,  Myung Gi Lim

IPC: G09G3/3291 ,  G09G3/32 ,  G09G3/20

CPC classification number: G09G3/3291 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2360/16

Abstract: An OLED display device is disclosed which includes: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; a gate driver connected to the pixels through gate lines; a data driver configured to apply a sensing voltage to the pixels through data lines in a sensing mode and enable a sensing current to flow through each of the driving transistors; a sensing driver configured to sense threshold voltages opposite the driving currents which flow through the driving transistors; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from the sensed threshold voltages, detect a bright-defected pixel on the basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.

公开(公告)号：US10217393B2

公开(公告)日：2019-02-26

申请号：US14967785

申请日：2015-12-14

Applicant: LG Display Co., Ltd.

Inventor： Ju Young Noh ,  Jun Hyeok Yang ,  Kyoung Don Woo

IPC: G09G3/20 ,  H03M1/74 ,  G09G3/36 ,  G09G3/3275

Abstract: A display device includes: a display panel including pixels arranged in a matrix shape; and a source driver to apply data voltages to the pixels. The source driver includes: a shift controller to shift a sampling control signal; a latch array to sample digital video data in response to the sampling control signal shifted by the shift controller; a digital-to-analog converter array to convert the digital video data from the latch array into data voltages by decoding the digital video data and combination-outputting gamma compensation voltages on the basis of a gray value of the decoded data; an output buffer array to output the data voltages from the digital-to-analog converter array; and a bias controller to adjust a bias current, which is applied to the output buffer array, according to delay and stable intervals of the data voltage.

公开(公告)号：US20240221654A1

公开(公告)日：2024-07-04

申请号：US18503457

申请日：2023-11-07

Applicant: LG Display Co., Ltd.

Inventor： Jun Hyeok Yang

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0286 ,  G09G2320/0214

Abstract: Disclosed is a display device including a display panel having a sub-pixel, a panel driving circuit configured to supply a data voltage to the sub-pixel, a panel sensing circuit configured to sense the sub-pixel, and a stabilization circuit disposed between a reference line connected to the sub-pixel and a sensing channel of the panel sensing circuit and configured to electrically stabilize the reference line such that charging of a voltage or current in the reference line is smoothly performed.

公开(公告)号：US09378678B1

公开(公告)日：2016-06-28

申请号：US14945866

申请日：2015-11-19

Applicant: LG DISPLAY CO., LTD.

Inventor： Byung Jae Lee ,  Jun Hyeok Yang ,  Tae Gung Kim ,  Myung Gi Lim

IPC: G09G3/3233 ,  G09G3/32

CPC classification number: G09G3/3291 ,  G09G3/2003 ,  G09G3/2007 ,  G09G3/3233 ,  G09G3/3266 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0242 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2330/08 ,  G09G2360/16

Abstract: An OLED display device is disclosed which includes: a display panel configured with pixels which each include an organic light emitting diode and a driving transistor applying a driving current to the organic light emitting diode; a gate driver connected to the pixels through gate lines; a data driver configured to apply a sensing voltage to the pixels through data lines in a sensing mode and enable a sensing current to flow through each of the driving transistors; a sensing driver configured to sense threshold voltages opposite the driving currents which flow through the driving transistors; and a brightness compensation circuit configured to derive negatively shifted degrees of threshold voltages of the driving transistors from the sensed threshold voltages, detect a bright-defected pixel on the basis of the negatively shifted degrees, and generate a compensation gray value for the bright-defected pixel.

Abstract translation: 公开了一种OLED显示装置，其包括：配置有各自包括有机发光二极管的像素的显示面板和向该有机发光二极管施加驱动电流的驱动晶体管; 栅极驱动器，通过栅极线连接到像素; 数据驱动器，被配置为以感测模式通过数据线将感测电压施加到像素，并使感测电流能够流过每个驱动晶体管; 感测驱动器，被配置为感测与流过所述驱动晶体管的驱动电流相反的阈值电压; 以及亮度补偿电路，被配置为从感测的阈值电压导出驱动晶体管的阈值电压的负偏移度，基于负偏移度检测亮缺陷像素，并且生成用于亮瑕疵的补偿灰度值 像素。