A novel driving scheme for high-resolution large-area a-Si:H AMOLED displays

Organic (polymeric) light-emitting diode (OLED) displays have demonstrated promising features such as high-resolution, potentially low-cost, and wide-viewing angle. More importantly, the OLED requires a small current to emit light along with a very low operating voltage (3-10 V), leading to a very power efficient devices. The programming time of high-resolution active matrix organic light emitting diode (AMOLED) displays is 20 /spl mu/s. However, the settling time of the conventional AMOLED driving schemes is of the order of ms. This paper presents a novel high-speed driving scheme for different pixel circuits based on hydrogenated amorphous silicon (a-Si:H) technology. The programming time of the new driving scheme is under 20 /spl mu/s, which is adequate for high-resolution, large-area AMOLED displays such as XVGA (1024/spl times/768).