METHOD FOR PRODUCING HYDROPHOBILIZED POROUS FILM

摘要

A process for manufacturing a hydrophobized microporous film includes: forming an organic silica insulating film 2 on a substrate 1; supplying a gaseous mixture 3 composed of a silylation gas and an inert gas in an apparatus having the substrate 1 disposed therein at a temperature of the substrate 1, the substrate 1 having the organic silica insulating film 2 formed thereon, and said temperature being equal to or higher than a dew point temperature of the silylation gas and equal to or lower than a vaporizing temperature of the silylation gas; stopping the supply of the gaseous mixture 3 into the apparatus; and heating the substrate having the organic silica insulating film 2 formed thereon, so that a hydrophobizing organic silica insulating film, in which the surface of the organic silica insulating film 2 and the surfaces of the pores are hydrophobized, can be obtained with reduced increase in the specific dielectric constant.