Patent ID: 7150916
Filing Date: 2006-12-19
Classification: B32B,C03C

Abstract:
1. A bent vehicle windshield comprising first and second bent glass substrates, the first bent substrate supporting a coating thereon, the coating comprising: a first dielectric layer supported by the first bent glass substrate; a first infrared (IR) reflecting layer comprising silver supported by the first bent glass substrate and located over at least the first dielectric layer; a first layer comprising silicon nitride located over at least the first IR reflecting layer and the first dielectric layer; a first layer comprising tin oxide located over and contacting the first layer comprising silicon nitride; a first layer comprising zinc oxide located over and contacting the first layer comprising tin oxide, so that the first layer comprising tin oxide is located between and contacting the first layer comprising silicon nitride and the first layer comprising zinc oxide; a second IR reflecting layer comprising silver located over and contacting the first layer comprising zinc oxide; at least another dielectric layer located over at least the second IR reflecting layer; and wherein the windshield is bent to a degree sufficient so as to have a centerline convex value “x” of at least about 26 mm.