×

LCD TV and projection-based backlight system used therefor

  • US 7,411,635 B2
  • Filed: 10/15/2007
  • Issued: 08/12/2008
  • Est. Priority Date: 03/31/2004
  • Status: Active Grant
First Claim
Patent Images

1. A liquid crystal display (LCD) device, comprising:

  • a liquid crystal display (LCD) screen panel for producing images; and

    a projection-based backlight system comprisinga light source for supplying a light beam;

    polarizing means for polarizing the light beam supplied by the light source to obtain a polarized light beam; and

    a first projection lens for enlarging the polarized light beam received from the polarizing means and projecting the enlarged polarized light beam onto the LCD screen panel;

    wherein the polarizing means comprises;

    a polarizing beam splitter having a light input side for receiving the light beam, a first split-light side adjacent to the light input side, a second split-light side opposite to the light input side, and a light output side opposite to the first split-light side, the polarizing beam splitter being configured to split the light beam into first polarization light to pass directly through the second split-light side for the first projection lens and second polarization light to be directed toward the first split-light side.

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