Patent ID: 8443627
Filing Date: 2013-05-21
Classification: C03C

Abstract:
1. A method of making a heat treated coated article, the method comprising: having a glass substrate with at least one layer comprising carbon on the glass substrate and a protective film on the glass substrate over at least the layer comprising carbon, the protective film including a release layer from 100-1,000 Å thick and a barrier layer, the release layer and the barrier layer being of different materials, and the release layer being between at least the layer comprising carbon and the barrier layer, and wherein the barrier layer comprises aluminum nitride; heat treating the glass substrate with the layer comprising carbon and the protective film thereon so that during the heat treating the protective film prevents significant burnoff of the layer comprising carbon, wherein the heat treating comprises heating the glass substrate to temperature(s) sufficient for thermal tempering; and removing at least part of the protective film during and/or after said heat treating.