×

Projection-type liquid crystal display apparatus

  • US 5,172,254 A
  • Filed: 12/05/1989
  • Issued: 12/15/1992
  • Est. Priority Date: 12/05/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A projection-type liquid crystal display apparatus comprising:

  • means for separating a light emitted from a light source into first and second linearly polarized light components perpendicular to each other;

    a first liquid crystal cell, including a plurality of pixels, for transmitting light of the first linearly polarized light component incident upon a pixel containing a first type of display data from a first and second type of display data indicating light to be transmitted and nontransmitted, respectively, and for converting light of the first linearly polarized light component incident upon pixels containing a pixel corresponding to said second type of display data into light of the second linearly polarized light component;

    a second liquid crystal cell, including a plurality of pixels each containing a pixel corresponding to the first or second type of display data, for transmitting light of the second linearly polarized light component incident upon a pixel containing the first type of display data and for converting light of the second linearly polarized light component incident upon a pixel containing said second type of display data into light of the first linearly polarized light component;

    means for composing the first and second linearly polarized light components transmitted through each pixel to produce an image superposed from image data generated by said first and second liquid crystal cells; and

    optical means for projecting the composed light onto a screen.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×