Lg Display Co., Ltd.

Woo-Jin Nam

Dae-Hyun Kim

In-Su Joo

Jong-Sik Shim

Min-Kyu Chang

Disclosed is an apparatus that prevents a degradation of image quality due to a deterioration of a driving apparatus in an organic electro-luminescence display device.

Driving apparatus for organic electro-luminescence display device

A method of driving an organic light emitting diode display device having first to third sub-pixels and a white sub-pixel comprises judging a gray level of an image data; classifying the image data into a low gray level group, a middle gray level group and a high gray level group; displaying an image using the first to third sub-pixels except the white sub-pixel when the gray level of the image data is classified into the low gray level group; and displaying the image using the first to third sub-pixels and the white sub-pixel when the gray level of the image data is classified into one of the middle and high gray level groups.

Method of driving organic light emitting diode display device

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

A pixel driving method for an organic light emitting device includes charging a data voltage supplied through a data line to a storage capacitor and driving an N-channel switching transistor while cutting off supply of an upper power supply voltage to an organic light emitting diode; and powering the organic light emitting diode emit light by driving the N-channel driving transistor by the data voltage charged onto the storage capacitor while supplying the upper power supply voltage to the light emitting diode.

Growing community of inventors

Gyeonggi-do, South Korea

Woo-Jin Nam