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Electrically switchable polymer dispersed liquid crystal materials including transmissive holographic gratings

  • US 6,667,134 B1
  • Filed: 10/29/1999
  • Issued: 12/23/2003
  • Est. Priority Date: 07/12/1996
  • Status: Expired due to Term
First Claim
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1. A hologram made by exposing an interference pattern inside a polymer-dispersed liquid crystal material, the polymer-dispersed liquid crystal material comprising, before exposure:

  • (a) a polymerizable monomer;

    (b) vinyl neononanoate;

    (c) a liquid crystal;

    (d) a coinitiator; and

    (e) a photoinitiator dye.

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