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Electrochromic display device

  • US 4,239,350 A
  • Filed: 04/18/1979
  • Issued: 12/16/1980
  • Est. Priority Date: 04/24/1978
  • Status: Expired due to Term
First Claim
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1. An electrochromic display device comprising:

  • a display electrode;

    a counter electrode spaced from the display electrode;

    an electrolyte filled in the space between the display electrode and the counter electrode;

    a first coloring crystalline layer formed on the display electrode, containing electrochromic material and having a specific pattern; and

    a second coloring amorphous layer laid on the first coloring layer and containing electrochromic material.

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