Lg Display Co., Ltd.

Min-Kyu Chang

Jong-Sik Shim

Shinji Takasugi

Woo-Jin Nam

Jeong-pyo Lee

Ji-Hun Kim

Sung-Woo Park

Hyo-Jin Park

Jeong-Hyo Park

An organic light emitting display includes a data driver supplying a sensing data voltage in a sensing mode to prevent degradation of image quality occurring due to a kick-back phenomenon. Each pixel of a display panel of the organic light emitting display has its driving characteristic sensed in the sensing mode. The data driver is configured to supply a high driving voltage, which is higher than the supplied sensing data voltage, and both voltages are successively applied to a data line of the display panel in the sensing mode.

Organic light emitting display having data driver supplying sensing data voltage in a sensing mode

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.

Light emitting display device capable of minimizing a current driving capability deviation among driving switching elements

Disclosed herein is a light emitting display device capable of minimizing a difference in current driving capability between driving switching elements so as to improve image quality of the display device.

Light emitting display device

Growing community of inventors

Seoul, South Korea

Min-Kyu Chang