公开(公告)号：US09153158B2

公开(公告)日：2015-10-06

申请号：US13726244

申请日：2012-12-24

Applicant: LG Display Co., Ltd.

Inventor： Ji-Hun Kim ,  Jong-Sik Shim ,  Min-Kyu Chang

IPC: G09G3/20 ,  G09G3/32

CPC classification number: G09G3/20 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861

Abstract: Disclosed is a light emitting display device capable of minimizing a current driving capability deviation among driving switching elements. The light emitting display device includes pixels each including a first TFT for supplying data voltage to a first node in response to a scan signal, a second TFT for forming a current path between first and second nodes in response to an emission control signal, a driving TFT for forming a current path between a first driving voltage supply line and a third node in accordance with a voltage level of the second node, a third TFT for supplying a reference voltage to a fourth node in response to a sensing signal, a fourth TFT for supplying an initialization voltage to the third node in response to an initialization signal, and a fifth TFT for supplying the reference voltage to the second node in response to the initialization signal.

Abstract translation: 公开了能够最小化驱动开关元件之间的电流驱动能力偏差的发光显示装置。 发光显示装置包括各自包括响应于扫描信号向第一节点提供数据电压的第一TFT的像素，用于响应于发射控制信号在第一和第二节点之间形成电流路径的第二TFT，驱动 TFT，用于根据第二节点的电压电平在第一驱动电压供给线和第三节点之间形成电流路径;第三TFT，用于响应于感测信号将参考电压提供给第四节点;第四TFT 用于响应于初始化信号向第三节点提供初始化电压;以及第五TFT，用于响应于初始化信号将参考电压提供给第二节点。