Patent ID: 7923131

Claim:
A coated substrate, comprising: a. a glass substrate; and b. a coating composition over the glass substrate, comprising: i. at least one metal based layer selected from the group consisting of tungsten, chromium, tantalum, molybdenum, aluminum, an alloy of cobalt and chromium, and mixtures thereof, wherein the at least one metal based layer has a thickness of 3-20 nm ; and ii. at least one dielectric layer comprising Si x N y , where x/y ranges from 0.75 to 1.5, over the metal based layer, wherein the dielectric layer is a multiple film configuration comprising (i) a first dielectric film comprising Si x N y having an index of refraction; (ii) a second dielectric film comprising silicon dioxide over the first dielectric film having an index of refraction lower than the index of refraction of the first dielectric film; and (iii) a third dielectric film comprising Si x N y over the second film.