公开(公告)号：US10515605B2

公开(公告)日：2019-12-24

申请号：US15887018

申请日：2018-02-02

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hongbeom Lee ,  Jihoon Shin ,  Yeunmo Yeon ,  Eunkyung Kim ,  Minho Park ,  Chowon Park ,  Yina Yun

IPC: G09G3/36 ,  G02F1/1362 ,  G02F1/1337

Abstract: A display device includes: a substrate; a gate line, a dummy gate line, a data line, a dummy data line, a pixel electrode, and a dummy pixel electrode, each disposed on the substrate; a switching element connected to the gate line, the data line, and the pixel electrode; a dummy switching element connected to the dummy gate line, the dummy data line, and the dummy pixel electrode; a compensation circuit detecting a change amount of a drain current based on drain currents generated from the dummy pixel at different time points, and detecting a change amount of a gate voltage of the dummy switching element based on the change amount of the drain current; a power supply circuit outputting a corrected gate-off voltage based on the change amount of the gate voltage; and a gate driver applying the corrected gate-off voltage to the gate line.

公开(公告)号：US20180218703A1

公开(公告)日：2018-08-02

申请号：US15887018

申请日：2018-02-02

Applicant: Samsung Display Co., Ltd.

Inventor： Hongbeom Lee ,  Jihoon Shin ,  Yeunmo Yeon ,  Eunkyung Kim ,  Minho Park ,  Chowon Park ,  Yina Yun

IPC: G09G3/36 ,  G02F1/1362

CPC classification number: G09G3/3688 ,  G02F1/133707 ,  G02F1/13624 ,  G02F1/136286 ,  G09G3/3648 ,  G09G3/3655 ,  G09G3/3696 ,  G09G2300/0413 ,  G09G2310/027 ,  G09G2310/0297 ,  G09G2310/067 ,  G09G2320/0214 ,  G09G2320/029 ,  G09G2320/048

Abstract: A display device includes: a substrate; a gate line, a dummy gate line, a data line, a dummy data line, a pixel electrode, and a dummy pixel electrode, each disposed on the substrate; a switching element connected to the gate line, the data line, and the pixel electrode; a dummy switching element connected to the dummy gate line, the dummy data line, and the dummy pixel electrode; a compensation circuit detecting a change amount of a drain current based on drain currents generated from the dummy pixel at different time points, and detecting a change amount of a gate voltage of the dummy switching element based on the change amount of the drain current; a power supply circuit outputting a corrected gate-off voltage based on the change amount of the gate voltage; and a gate driver applying the corrected gate-off voltage to the gate line.