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TRANSPARENT SCREEN

  • US 20180321577A1
  • Filed: 06/22/2018
  • Published: 11/08/2018
  • Est. Priority Date: 12/25/2015
  • Status: Active Grant
First Claim
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1. A transparent screen comprising:

  • a support that is capable of transmitting light;

    a plurality of protruding portions that are formed on one surface of the support and have inclined surfaces parallel to each other;

    a cholesteric liquid crystal layer that is formed on each of the inclined surfaces of the plurality of protruding portions and formed of a liquid crystal material having a cholesteric structure; and

    an overcoat layer that is laminated on the surface of the support, on which the plurality of protruding portions are formed, so as to cover the cholesteric liquid crystal layer,wherein a normal line of each of the inclined surfaces of the plurality of protruding portions is parallel to a spiral axis of the cholesteric structure of the cholesteric liquid crystal layer,an angle formed between a normal line of a surface of the overcoat layer and the spiral axis of the cholesteric structure of the cholesteric liquid crystal layer is 5°

    to 42°

    ,a difference in refractive index between the cholesteric liquid crystal layer and the protruding portion is 0.2 or less, anda difference in refractive index between the cholesteric liquid crystal layer and the overcoat layer is 0.2 or less.

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