Abstract
The study proposes an external algorithm to compensate non-uniformity on AMOLED panel. With the method of sensing TFT V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sub> variation, this external algorithm is designed to correct the data line voltage, V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">data</sub> , in order to maintain the required OLED luminance even though every V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">th</sub> variation of driving TFTs are different. The algorithm and sensing method are realized on the already proposed 4T0.5C pixel circuit, which is investigated to show the performance of panel non-uniformity compensation in the experiment results. Moreover, the original merits of 4T0.5C pixel circuit like OLED degradation alleviation can be maintained.
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