Efficient Frame Rate Control Algorithm and Its Implementation

The frame rate control (FRC) is designed for displaying color level on STN panels. According to a pixel´s color level, it controls its ON/OFF state in different frames. In this paper, we proposed a spatial expanded FRC (SEFRC) algorithm, which expanded the traditional FRC algorithm on single pixel to the whole panel, and therefore efficiently inhibited the flicker noise. This FRC algorithm had been integrated into a LCD controller, which had been taped out by SMIC. The result shows that SEFRC has good hardware characteristics with only negligible silicon cost