Abstract
A voltage modulated AMOLED pixel design using low temperature polycrystalline silicon thin film transistor (LTPS-TFT) is proposed. The proposed pixel, which consists of 5 p-type LTPS TFTs and 1-capacitor, successfully suppressed the threshold voltage variation problem in LTPS TFTs and OLEDs. A new p-type LTPS shift register employing only 1 clock signal is also proposed for the integration driving circuits. In order to eliminate the clock skew problem, only 1 phase clock signal is used in the proposed shift register. The proposed circuits were verified by simulation and experimental results.
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