Electro-optical element including IMI coatings

  • US 7,830,583 B2
  • Filed: 03/05/2007
  • Issued: 11/09/2010
  • Est. Priority Date: 03/03/2006
  • Status: Active Grant
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First Claim
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1. An electrochromic element comprising:

  • a first substrate having a first surface and a second surface opposite the first surface;

    a second substrate having third and fourth surfaces, the first and second substrates disposed in a parallel and spaced apart relationship so as to define a gap therebetween, the second and third surfaces opposing each other;

    an electrochromic medium located in the gap, the electrochromic medium having a light transmittance that is variable upon the application of an electric field thereto; and

    a transparent electrode layer covering at least a portion of at least a select one of the second surface and the third surface,wherein the transparent electrode layer comprises a stack including a first insulator layer, at least one metal layer and a second insulator layer, andwherein the transparent electrode layer is characterized by a color rendering index of greater than or equal to 80.

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