A Fast Settling Current Driver Based on the CCII for AMOLED Displays

Abstract

Conventional current drivers are incapable of programming high-resolution hydrogenated amorphous silicon (a-Si:H) active matrix organic light-emitting diode (AMOLED) displays within the frame time requirement. This paper presents a new fast settling current driver. While the settling time of the conventional drivers is of the order of milliseconds (ms), the new current driver presented here can settle under 40 /spl mu/s, thus providing for high-resolution current-programmed a-Si:H AMOLED displays such as QVGA (320/spl times/240), SVGA (800/spl times/600), and XGA (1024/spl times/768).