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Substrate with cholesteric layer and display having the substrate

  • US 20040051830A1
  • Filed: 07/07/2003
  • Published: 03/18/2004
  • Est. Priority Date: 11/07/2001
  • Status: Active Grant
First Claim
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1. A board comprising a light transparent substrate and a cholesteric layer provided on the substrate and provided with an optical window of a predetermined pattern.

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