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Electrooptical system

  • US 6,327,010 B1
  • Filed: 12/19/1996
  • Issued: 12/04/2001
  • Est. Priority Date: 02/03/1992
  • Status: Expired due to Fees
First Claim
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1. An electrooptical system containing:

  • (a) a twisted nematic liquid-crystal layer having a director, with an input side and an output side, which is positioned between a first substrate and a second substrate, each of whose inside surface is provided with an electrode coating and an alignment layer thereon, the director of said liquid crystal layer having a parallel edge alignment and a twist angle of 0°



    β



    100°

    , (b) at least one compensation layer for compensating an optical path difference of the liquid-crystal layer d·

    Δ

    n, and (c) at least one device for linear polarization of light in such an arrangement that light, before entering and after exiting the liquid-crystal layer, passes through a polarization device, I. wherein, in order to achieve high contrast, and/or high brightness, and/or high viewing angle independence of the contrast and/or the color values, the angle ψ

    , which the polarization device on the input side of the liquid crystal layer forms with the director of the liquid-crystal layer on the surface of the first substrate, satisfies I.A. condition (1) or (2)

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