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Electronic skin having uniform gray scale reflectivity

  • US 20090284691A1
  • Filed: 05/16/2008
  • Published: 11/19/2009
  • Est. Priority Date: 05/16/2008
  • Status: Active Grant
First Claim
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1. Electronic skin comprising:

  • electrically conductive layers;

    at least one active layer of bistable cholesteric liquid crystal material, each said active layer being disposed between adjacent said conductive layers, wherein said cholesteric liquid crystal material of each said active layer has a pitch length effective to reflect light of a predetermined color and each said active layer has an area that is susceptible to discontinuities in gray scale reflectivity; and

    an outer layer of transparent material adjacent one of said conductive layers;

    wherein each said active layer reflects light at a gray scale having uniform reflectivity in said area.

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