Patent ID: 6517901
Filing Date: 2003-02-11
Classification: B05D,C03C

Abstract:
Process for depositing via the sol-gel route a discontinuous electrically conductive layer based on metal oxide(s) on a substrate having multiple faces comprising:(a) preparing a sol from at least one metal precursor, at least one chelating/stabilizing agent, at least one solvent and/or at least one dopant precursor, (b) depositing the sol as a layer on at least part of one of the faces of the substrate, (c) interposing a mask that covers at least a part of the sol layer between the sol layer and an ultraviolet ray emission source, (d) irradiating a first time with ultraviolet rays the part of the sol layer not covered by the mask, (e) heat treating a first time at least that part of the sol layer which was irradiated by the ultraviolet rays, (f) further irradiating with ultraviolet rays the part of the sol layer not covered by the mask, and (g) further heat treating at least that part of the sol layer which was irradiated by the ultraviolet rays, wherein the irradiating and the heat treatment steps are alternated.