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Reflective liquid crystal display with improved contrast

  • US 20030081154A1
  • Filed: 11/01/2001
  • Published: 05/01/2003
  • Est. Priority Date: 11/01/2001
  • Status: Active Grant
First Claim
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1. A display comprising:

  • a light modulating element;

    a polarizer located on a first side of the light modulating element;

    a reflective element located on a second side of the light modulating element; and

    an optical element that is;

    located between the light modulating element and the polarizer;

    includes a first side facing the polarizer, and a second side facing the light modulating element; and

    is adopted to;

    receive a first pencil of light characterized by a first angle at the first side, and in response to receiving the first pencil of light, output a second pencil of light that is characterized by a second angle and includes a substantial portion of light from the first pencil of light at the second side;

    receive a third pencil of light that is characterized by a third angle at the second side, and in response to receiving the third pencil of light output a fourth pencil of light that is characterized by a fourth angle and includes a substantial portion of light from the third pencil of light at the first side, wherein the first angle differs in magnitude from the fourth angle.

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