Patent ID: 7138182
Filing Date: 2006-11-21
Classification: C03C

Abstract:
1. A transparent substrate bearing a temperable high shading performance low-emissivity coating comprising, in sequence outwardly: (a) a first infrared-reflective film; (b) a first high absorption blocker layer deposited directly over the first infrared-reflective film, the first high absorption blocker layer being deposited as essentially pure niobium; (c) a middle coat comprising a plurality of transparent dielectric films beginning with a nitride film deposited directly over the first high absorption blocker layer and ending with an oxide film directly beneath a second infrared-reflective film; (d) the second infrared-reflective film; (e) a second high absorption blocker layer deposited directly over the second infrared-reflective film, the second high absorption blocker layer being deposited as essentially pure niobium; and (f) an outer coat comprising a transparent dielectric nitride film deposited directly over the second high absorption blocker layer; wherein the first and second high absorption blocker layers have a combined thickness of greater than 50 angstroms.