Wherein, the drive method comprises: comparing the difference of pixel gray value of Mth and the (M-1)th frame video data, accounting the opposite pixel number N(M), then computing to output the luminous duty cycle D and amplitude A of the back light source; when N(M) = 0, displaying static picture and setting D to 1 to avoid picture blinking; or else, displaying dynamic picture and setting D less than 1 to drive the back light with impulse light and show clear picture. This invention can obtain supper display performance. |