Patent ID: 7413768
Filing Date: 2008-08-19
Classification: C03C,C23C,Y10T

Abstract:
1. A method of making an infrared reflective coated article, comprising the steps of: providing a substrate; depositing a first dielectric layer over at least a portion of the substrate, the layer comprising a first zinc stannate film deposited over the substrate having zinc in a weight percent range of 10 to 90, and tin in a weight percent range of 90 to 10, and an electrical enhancing film deposited over the first zinc stannate film, the electrical enhancing film selected from 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; forming an infrared reflective layer on the first dielectric layer; forming a metal primer layer over the infrared reflective layer; forming a second dielectric layer over the primer layer; and forming a protective layer of at least two films selected from 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, wherein the oxy-materials are selected from oxides and oxynitrides, and wherein the-protective layer is in a position where it can provide durability to the dielectric layer, infrared reflective layer, metal primer layer, and second dielectric layer.