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Electrochromic device with cationic ion exchange resin separator

  • US 4,116,546 A
  • Filed: 04/27/1977
  • Issued: 09/26/1978
  • Est. Priority Date: 09/24/1975
  • Status: Expired due to Term
First Claim
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1. An electrochromic display device comprising in layered form, a first transparent substrate with a selectively actuatable transparent electrode thereon and a first electrochromic layer on said transparent electrode, a counterelectrode having a second electrochromic layer thereon, with an electrolyte-separator layer between said electrochromic layers, wherein the improvement comprises a solid electrolyte-separator comprised of a soluble polymer cationic ion exchange resin in the acid form, chemically wetted.

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