Electrochromic mirrors and devices

  • US 5,668,663 A
  • Filed: 05/05/1994
  • Issued: 09/16/1997
  • Est. Priority Date: 05/05/1994
  • Status: Expired due to Term
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First Claim
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1. An electrochromic rearview mirror for a motor vehicle comprising:

  • (a) a substantially transparent substrate with a substantially transparent conductive electrode coating on its inward surface;

    (b) a substrate with a conductive electrode coating on its inward surface, said substrate positioned in spaced-apart relationship with said substrate of (a);

    (c) a layer of reflective material coated onto a surface of said substrate of (b);

    (d) an electrochromic solid film coated onto said substantially transparent conductive electrode coating of (a) or onto said conductive electrode coating of (b);

    (e) a sealing means positioned toward a peripheral edge of each of said substrate of (a) and said substrate of (b) and sealingly forming a cavity therebetween;

    (f) an electrolyte comprising redox reaction promoters, wherein said redox reaction promoters comprise a metallocene in combination with a phenothiazine, and wherein said electrolyte is located within said cavity to form an electrochromic element; and

    (g) a means for introducing an applied potential to said electrochromic element to controllably cause a variation in the amount of light reflected from said mirror.

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