A Real Time Video Data Adjusting Method for Active Matrix Organic Light Emitting Diode Displays with High Image Quality

A real time video data adjusting method for television applications of active matrix organic light emitting diode (AMOLED) displays with high image quality is proposed. The proposed method senses electrical characteristics of polycrystalline silicon (poly-Si) thin film transistors (TFTs) and organic light emitting diode (OLED) of pixels and compensates nonuniform luminance due to the electrical characteristic variations of TFTs and the degradation of OLEDs by adjusting video data. The sensing and compensation operations are performed while the image is displayed on the screen. Experimental results show that the luminance error is improved from 92.1% to 0.8% when the proposed adjusting method is used The proposed method is demonstrated on 14.1-inch AMOLED display panel(1).This work was partially supported by Korean Research Foundation Grant (KRF-2006-005-J04101)