Patent ID: 8059079

Claim:
A liquid crystal display, comprising: a plurality of pixel units arranged in a matrix, each pixel unit comprising a pixel electrode and a common electrode; a data driving circuit configured for providing a plurality of data voltages to each pixel electrode; a common voltage generating circuit configured for providing a common voltage to each common electrode; and a gamma voltage generating circuit configured for providing gamma voltages to the data driving circuit; wherein a voltage difference between the data voltage and the common voltage in each pixel unit is a sum of a main voltage and an auxiliary voltage with periodical change; an absolute value of the main voltage is constant; an absolute value of the auxiliary voltage is less than the absolute value of the main voltage; the common voltage in each pixel unit is a sum of a main common voltage and the auxiliary voltage; the main voltage is a voltage difference between the main common voltage and the data voltage; and a sum of the auxiliary voltage is zero in a minimum period formed by frame Nâˆ’2, frame Nâˆ’1, frame N, and frame N+1; wherein an absolute value of the auxiliary voltage is less than the absolute value of the main voltage; wherein in frame Nâˆ’2, a value of the data voltage is Vdata 1 , a value of the main common voltage is Vcom, a value of the auxiliary voltage is 0, where Vdata 1 >0, Vcom>0, Vdata 1 <Vcom; in frame Nâˆ’1, the value of the data voltage is Vdata 2 , the value of the main common voltage is Vcom, the value of the auxiliary voltage is âˆ’Va, where Vdata 2 >Vcom, Vdata 2 âˆ’Vcom=Vcomâˆ’Vdata 1 , 0<Va<Vdata 2 âˆ’Vcom; in frame N, the value of the data voltage is Vdata 1 , the value of the main common voltage is Vcom, the value of the auxiliary voltage is 0; in frame N+1, the value of the data voltage is Vdata 2 , the value of the main common voltage is Vcom, the value of the auxiliary voltage is Va.