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Electrochromic light controlling panel

  • US 4,338,000 A
  • Filed: 09/11/1980
  • Issued: 07/06/1982
  • Est. Priority Date: 10/25/1979
  • Status: Expired due to Term
First Claim
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1. An infra-red reflecting and electrochromic light controlling panel which comprises a first transparent plate (1) made of glass or plastic;

  • a transparent electroconductive film (2);

    an interlayer film made of a polyelectrolyte;

    a first tungsten oxide film (4), an infra-red reflecting and electroconductive metal film (5), a second tungsten oxide film (6) and a transparent plate (7) made of glass or a plastic which are laminated in said order; and

    a device for applying potential between said transparent electroconductive film and said infra-red reflecting and electroconductive metal film whereby light transmission is controlled by applying positive or negative potential to said first tungsten oxide film.

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