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Frontlit illuminated touch panel

  • US 20020145593A1
  • Filed: 04/06/2001
  • Published: 10/10/2002
  • Est. Priority Date: 04/06/2001
  • Status: Active Grant
First Claim
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1. A frontlit touch panel for use with a reflective light valve, comprising a front light guide having at least one light input face that supplies light to the guide, a viewing face, a light output face opposite the viewing face, and at least one component of a touch-sensitive transducer, the light output face having a light extraction layer thereon having a substantially flat light exit face and containing buried reflective facets that extract supplied light from the guide through the light exit face.

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