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Backlighting device

  • US 6,144,424 A
  • Filed: 12/05/1996
  • Issued: 11/07/2000
  • Est. Priority Date: 12/05/1995
  • Status: Expired due to Fees
First Claim
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1. A backlighting device comprising:

  • a light guiding plate having a light emergence surface, a bottom surface and a light receiving edge;

    light source means disposed facing said edge of said light guiding plate;

    a substantially transparent layer having a higher refractive index than said light guiding plate disposed on top of and immediately adjacent said light emergence surface of said light guiding plate; and

    a scattering layer disposed on top of said substantially transparent layer wherein the bottom surface is free of an attached reflecting layer.

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