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Electrochromic display cell

  • US 4,392,720 A
  • Filed: 11/28/1980
  • Issued: 07/12/1983
  • Est. Priority Date: 12/17/1979
  • Status: Expired due to Term
First Claim
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1. An electrochromic display cell comprising a substantially flat substrate, an electrode disposed on said substrate, an electrochromic material disposed on a portion of said electrode, a cover having a substantially flat peripheral portion, an ionic conductor disposed between said substrate and said cover, annular soldering means for sealing said peripheral portion of said cover to said substrate, and a protective frame disposed in tight contact with said substrate and said cover and disposed tightly separating said soldering means and said ionic conductor in order to prevent chemical reaction therebetween.

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