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Liquid crystal color display devices

  • US 4,097,128 A
  • Filed: 04/20/1976
  • Issued: 06/27/1978
  • Est. Priority Date: 04/24/1975
  • Status: Expired due to Term
First Claim
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1. A liquid crystal color display device which comprises at least one liquid crystal cell formed of first and second substrates, at least one of which is transparent and both of which are coated with first and second electrodes, at least one of which is transparent and an nematic liquid crystal interposed between the first and second substrates, the surface of the first substrate being so treated as to cause the molecules of the nematic liquid crystal to be orientated parallel with the substrate surface and the surface of the second substrate being so treated as to cause the molecules of the nematic liquid crystal to be orientated perpendicular to the substrate surface;

  • at least one polarizer; and

    means for varying the birefringence of the nematic liquid crystal.

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