Patent ID: 8329318

Claim:
A coated substrate comprising: a. a substrate; and b. a coating composition over the substrate comprising: i. at least one metal based layer selected from the group consisting of tungsten, chromium, tantalum, molybdenum, aluminum, alloys of cobalt and chromium, and mixtures thereof, wherein each metal based layer independently has a thickness of from 14 nm to 50 nm; and ii. at least one dielectric layer comprising Si x N y , where x/y ranges from 0.75 to 1.5, over and adjacent to the metal based layer, wherein the dielectric layer is a multiple film configuration consisting of, (i) a first dielectric film comprising Si x N y having an index of refraction, (ii) a second dielectric film over the first dielectric film, the second dielectric film having an index of refraction that is at least 0.25 lower than the index of refraction of the first dielectric film, where said second dielectric film is silicon dioxide, and (iii) a third dielectric film comprising Si x N y over the second film.