Patent ID: 7283192

Claim:
A liquid crystal display used in normally black mode, comprising a plurality of pixels each of which has a liquid crystal layer and a plurality of electrodes for applying voltage to the liquid crystal layer, wherein: each of the plurality of pixels comprises a first sub-pixel and a second sub-pixel which can apply mutually different voltages to their respective liquid crystal layers; and when each of the plurality of pixels displays a grayscale gk which satisfies 0≦gk≦n, where gk and n are integers not less than zero and a larger value of gk corresponds to higher brightness, n represents the highest grayscale, and at least the range of 0<gk≦n−1 includes gk which satisfies relationships ΔV 12 (gk)>0 volts and ΔV 12 (gk)≧ΔV 12 (gk+1) if it is assumed that ΔV 12 (gk)=V 1 (gk)−V 2 (gk), where V 1 (gk) and V 2 (gk) are root-mean-square voltages applied to the liquid crystal layers of the first sub-pixel and the second sub-pixel, respectively.