Mirror reflective element

  • US 9,290,127 B2
  • Filed: 03/23/2015
  • Issued: 03/22/2016
  • Est. Priority Date: 05/13/2011
  • Status: Active Grant
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First Claim
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1. A variable reflectance vehicular electro-optic rearview mirror reflective element assembly comprising:

  • a front substrate having a first surface that generally faces a driver of a vehicle equipped with a mirror assembly that incorporates said rearview mirror reflective element assembly;

    said front substrate having a second surface opposite said first surface, wherein said second surface of said front substrate has a transparent electrically conductive coating disposed thereat;

    wherein said front substrate has a perimeter band disposed along a perimeter region of said second surface;

    wherein said perimeter band comprises (i) a layer of chromium established at said second surface, (ii) a first layer of nickel chromium established at said layer of chromium, (iii) a layer of silver or silver alloy established at said first layer of nickel chromium, and (iv) a second layer of nickel chromium established at said layer of silver or silver alloy;

    a rear substrate having a third surface and a fourth surface, wherein said third surface has a conductive reflector coating disposed thereat;

    a perimeter seal disposed between said front and rear substrates, said perimeter seal spacing said front and rear substrates apart and forming an interpane cavity therebetween; and

    wherein said third surface conductive reflector coating comprises a plurality of layers, and wherein said plurality of layers comprises (i) a first layer of nickel chromium, (ii) a silver or silver alloy layer established at said first layer of nickel chromium, (iii) a second layer of nickel chromium established at said silver or silver alloy layer, and (iv) a reflective layer established at said second layer of nickel chromium, wherein said reflective layer comprises one of ruthenium, rhodium, platinum and palladium.

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