Patent ID: 9290127
Filing Date: 2016-03-22
CPC Classification: B60R,G02F

Claim Text:
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.