Patent ID: 8178159

Claim:
A method of forming an antireflective coating on a substrate comprising: providing a substrate, depositing and curing two or more layers of organosilicate composition in a layer over at least a portion of the substrate or over one or more intermediate layers applied over said substrate, and characterized in that each layer of organosilicate composition differs in light absorption properties from an adjacent layer and comprises a latent acid catalyst and the following silanes or the hydrolyzed or partially hydrolyzed product of the following silanes (a) an alkoxy or acyloxy silane having at least one group containing ethylenic unsaturation which group is bonded to the silicon atom (b) an alkoxy or acyloxy silane having at least one group containing an aromatic ring which group is bonded to the silicon atom, and (c) optionally an alkoxy or acyloxy silane having at least one C 1 -C 6 alkyl group bonded to the silicon.