Patent ID: 9499437
Filing Date: 2016-11-22
CPC Classification: C03C,Y10T

Claim Text:
1. A coated article including a layer system supported by a glass substrate, the layer system comprising at least the following layers moving outwardly from the glass substrate: a first dielectric layer; an IR reflecting layer comprising silver on the glass substrate over at least the first dielectric layer; a contact layer on the glass substrate over and directly contacting the infrared (IR) reflecting layer; a dielectric layer comprising silicon nitride; a first layer comprising ZrO a dielectric layer comprising silicon oxynitride on the substrate, the dielectric layer comprising silicon oxynitride being over and directly contacting the first layer comprising ZrO a second layer comprising zirconium oxide on the glass substrate over and directly contacting the dielectric layer comprising silicon oxynitride; and wherein the dielectric layer comprising silicon nitride is from 20-40 nm thick, and wherein the dielectric layer comprising silicon oxynitride is from 40-160 nm thick and is at least 70 nm thicker than is the dielectric layer comprising silicon nitride.