Study of the Multi-Level Gate Voltage Effect on TFT-LCD Display Quality

摘要

At a-si TFT-LCD, when gate signal is from on state to off state, because of the coupling capacitance Cgs of gate electrode and source electrode, the voltage of pixel electrode occurs kickback, which is named as △ Vp. By using the MLG (multi-level gate) voltage, decreasing △ Vp could decrease flicker level and improve the voltage of pixel electrode at holding stage. This paper analyzes the △ Vp forming mechanism in theory and study of the trend of the MLG voltage changed, and the effect of MLG on TFT-LCD display quality.