Patent ID: 8187671

Claim:
A method of making a heat treated coated article, the method comprising: forming at least one layer comprising diamond-like carbon (DLC) on a glass substrate; forming a protective film on the glass substrate over at least the layer comprising DLC, wherein the protective film comprises a layer comprising aluminum nitride and a layer comprising a metal oxide, the layer comprising a metal oxide located between the layer comprising aluminum nitride and the layer comprising DLC; 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, and during the heat treating a barrier layer comprising silicon oxide and/or silicon nitride is on the glass substrate so as to be located between at least the glass substrate and the layer comprising DLC, wherein the heat treating comprises heating the glass substrate to temperature(s) sufficient for thermal tempering, heat strengthening, and/or heat bending; and after said heat treating, entirely or partially removing the protective film by blasting the protective film off of the glass substrate using at least blasting particles that are softer than the DLC, so that after said blasting the layer comprising DLC remains on the glass substrate.