Patent ID: 7914857

Claim:
A method of making a heat treated coated article, the method comprising: providing a glass substrate; forming at least one layer comprising diamond-like carbon (DLC) on the glass substrate; forming a protective film on the glass substrate over at least the layer comprising DLC thereby forming a coated surface of the glass substrate; determining whether the coated surface of the glass substrate is to be bent in a convex manner, to be bent in a concave manner, or to remain flat during heat treating; wherein the protective film is formed on the glass substrate over at least the layer comprising DLC in a manner so that oxygen content of at least part of the protective film as deposited is determined based on whether or not the coated surface of the glass substrate is to be bent in a convex manner, to be bent in a concave manner, or to remain flat during heat treating, such that at least part of the protective film has a relatively higher oxygen content in the as-deposited film when the film is to be bent in a concave manner than when the film is to be bent in a convex manner or is to remain substantially flat during heat treating; and heat treating the glass substrate with the layer comprising DLC and the protective film thereon so that during the heat treating the protective film prevents significant burnoff of the layer comprising DLC, wherein the heat treating comprises heating the glass substrate to temperature(s) sufficient for thermal tempering and/or heat bending.