Liquid crystal display

  • US 20060256271A1
  • Filed: 04/20/2006
  • Published: 11/16/2006
  • Est. Priority Date: 06/06/2002
  • Status: Active Grant
First Claim
Patent Images

1. 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≦


    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<



    1 includes gk which satisfies relationships Δ

    V12 (gk)>

    0 volts and Δ

    V12 (gk)>


    V12 (gk+1) if it is assumed that Δ

    V12 (gk)=V1 (gk)−

    V2 (gk), where V1 (gk) and V2 (gk) are root-mean-square voltages applied to the liquid crystal layers of the first sub-pixel and the second sub-pixel, respectively.

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