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Visual display device

  • US 5,165,772 A
  • Filed: 03/18/1992
  • Issued: 11/24/1992
  • Est. Priority Date: 03/18/1992
  • Status: Expired due to Term
First Claim
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1. A visual display device comprising:

  • light source means; and

    a display panel having a light receiving edge and first and second opposing surfaces extending away from said edge, said edge being positioned to be illuminated by said light source means;

    the second surface being formed with steps having walls which are angled toward said edge such that light propagating through the display panel from said edge is refracted out of the display panel through said walls in a direction at least partially away from the first surface.

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