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Liquid crystal display projection system having improved contrast

  • US 5,048,931 A
  • Filed: 07/13/1989
  • Issued: 09/17/1991
  • Est. Priority Date: 11/01/1988
  • Status: Expired due to Fees
First Claim
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1. An electro-optical display system comprising:

  • an illumination source furnishing light rays;

    polarization changing means, for changing the polarization of light in response to a control signal, positioned in the path of said light rays so that said polarization changing means furnishes polarization output light comprising first polarized light in the absence of said control signal and second polarized light in response to said control signal;

    means for applying said control signal to said polarization changing means in accordance with information to be displayed;

    display means having a first side for displaying said information and a second side substantially parallel to said first side; and

    analyzer means positioned to receive said first polarized light and said second polarized light and furnishing only said second polarized light in response thereto, said analyzer means being laminated to said display means.

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