Electrochromic mirror reflective element for vehicular rearview mirror assembly

  • US 8,559,093 B2
  • Filed: 04/20/2012
  • Issued: 10/15/2013
  • Est. Priority Date: 04/27/1995
  • Status: Expired due to Fees
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First Claim
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1. An electrochromic mirror reflective element suitable for use in a rearview mirror assembly of a vehicle, said electrochromic mirror reflective element comprising:

  • a first substrate and a second substrate having an electrochromic medium disposed therebetween, wherein said electrochromic medium is bounded by a perimeter seal, and wherein said perimeter seal is disposed between said first and second substrates;

    wherein said first substrate comprises a first substantially transparent substrate having a first surface and a second surface opposite said first surface;

    wherein said second substrate comprises a second substantially transparent substrate having a third surface and a fourth surface opposite said third surface;

    wherein a transparent electrically conductive thin film is disposed at least a portion of said second surface of said first substrate;

    wherein a perimeter coating is disposed at said second surface of said first substrate proximate at least a perimeter portion of said first substrate, and wherein said perimeter coating comprises at least one of (i) a reflective perimeter coating, (ii) an electrically conductive perimeter coating and (iii) a substantially opaque perimeter coating;

    wherein said perimeter coating generally conceals said perimeter seal from view by a person viewing said first surface of said first substrate and through said first substrate;

    wherein an at least partially reflective stack of thin films is disposed at least a portion of said third surface of said second substrate, and wherein said at least partially reflective stack of thin films comprises at least one metal thin film; and

    wherein said perimeter seal is at least partially visible to a person viewing said fourth surface of said second substrate and through said second substrate.

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