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Transflective liquid crystal display device

  • US 7,876,406 B2
  • Filed: 04/01/2008
  • Issued: 01/25/2011
  • Est. Priority Date: 04/02/2007
  • Status: Expired due to Fees
First Claim
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1. A transflective liquid crystal display (LCD) device comprising:

  • a liquid crystal (LC) cell comprising a LC layer including therein LC molecules homogeneously oriented and a pair of transparent substrates sandwiching therebetween the LC layer to define an array of pixels, each of said pixels including a transmission area and a reflection area juxtaposed each other;

    first and second polarizing films sandwiching therebetween said LC cell, said first polarizing film being disposed at a front side of said LC cell and having an optical axis perpendicular to an optical axis of said second polarizing film disposed at a rear side of said LC cell;

    a reflection film disposed in said reflection area at a rear side of said LC layer; and

    a retardation film including a first portion disposed in said reflection area between said reflection film and said LC layer, and a second portion disposed in said transmission area between said LC layer and said second polarizing film, said retardation film having a slow axis perpendicular to an initial orientation direction of said LC molecules upon absence of an applied voltage, said slow axis being perpendicular or parallel to said optical axis of said first polarizing film,wherein an orientation of said LC molecules upon display of a dark state has a direction which is different between said reflection area and said transmission area.

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