Patent ID: 8058153
Filing Date: 2011-11-15
Classification: H01L

Abstract:
1. A method for recovering a damage of a low dielectric insulating film made of an insulating film having a dielectric constant lower than that of an inorganic silicon oxide film, comprising: decomposing a polymer layer generated in a surface of the low dielectric insulating film by a processing by using an ultraviolet decomposition process; recovering a damage component of the low dielectric insulating film by substituting, after decomposing the polymer layer, a damaged functional group, which is generated in the surface of the low dielectric insulating film by the processing, with a hydrophobic functional group; and further recovering the damage component present under a dense layer generated in the surface of the low dielectric insulating film by the substitution process by using an ultraviolet heating process, wherein the dense layer interferes with the substitution process.