Title :
A real time video data adjusting method for active matrix organic light emitting diode displays with high image quality
Author :
Min, Ung-Gyu ; In, Hai-Jung ; Kwon, Oh-Kyong
Author_Institution :
Dept. of Electron. & Commun. Eng., Hanyang Univ., Seoul, South Korea
fDate :
11/1/2009 12:00:00 AM
Abstract :
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.
Keywords :
LED displays; brightness; luminescent devices; thin film devices; AMOLED; OLED; TFT; active matrix organic light emitting diode displays; crystalline silicon thin film transistors; high image quality; luminance error; organic light emitting diode; real time video data adjusting method; Active matrix organic light emitting diodes; Aging; Capacitors; Electric variables; Flat panel displays; Image quality; Organic light emitting diodes; TV; Thin film transistors; Threshold voltage; Light-emitting diode displays, thin film transistors, compensation, flat panel displays;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2009.5373812