Abstract:Based on the operational principle of TFT-LCD,a circuit design for a small-scale LCD which is used to display video images is proposed in this paper.Also some skills are presented in it.Hav e been verified by experiments,the proposed design is simple and applicable.It c an give stable signals such as synchronizing signal,sequential control signal an d anti-phase video signal.Together with the driving IC of LH50712 and LH50728,a small Video LCD has been accomplished and the integral advantages of portabilit y,low cost,convenient adjustment and high quality of image are achieved. -