Patent ID: 6833194
Filing Date: 2004-12-21
Classification: C03C,C23C,Y10T

Abstract:
An infrared reflective coated article comprising:a substrate; a dielectric layer sputter deposited over the substrate, the layer comprising a first zinc stannate film deposited over the substrate having zinc in weight percent range of equal to and greater than 10 and equal to and less than 90, and tin in the weight percent range of equal to and less than 90 and equal to and greater than 10, and an electrical enhancing film deposited over the zinc stannate film, the electrical enhancing film selected from the group of films consisting of zinc oxide, tin oxide film and a second zinc stannate film wherein the composition of the first zinc stannate film is at least about 5 weight percent different than the composition of the second zinc stannate film, and an infrared reflective layer deposited on the dielectric layer, a metal primer layer over the infrared reflective layer; a second dielectric layer over the primer layer; and a protective layer of at least two films selected from the group consisting of metal-containing films which are from different transition metals of Groups 4, 5, 6, or 10 of the Periodic Table of Elements, silicon-containing films, metal and silicon films, films of metal and metal-oxy materials, films of metal and silicon oxy-materials, films of silicon and metal-oxy materials, films of silicon and silicon oxy-materials, and films of metal oxy and silicon oxy materials, where the oxy materials are selected from the group consisting of oxides and oxynitrides, and wherein the protective layer is in a position where it can perform the protective function for providing durability to the dielectric layer, infrared reflective layer, metal primer layer, and second dielectric layer.