Patent ID: 6429147
Filing Date: 2002-08-06
Classification: H01L

Abstract:
A method for making an insulating film configured to form on a substrate having an uneven surface by using a fluid source material, said method comprising:providing a substrate having a surface with wiring attached thereto; providing a film containing at least one fluid-inter-layer free of detrimental gases on the surface of the substrate to prevent corrosion by the steps of applying the fluid inter-layer having moisture by forming a first insulating film having fluidity on said surface of the substrate by using the fluid source material; applying plasma processing onto said first insulating film with the substrate heated to 350Â° C. to remove moisture from the first insulating film, the plasma processing comprises a gas having matrix atoms free of nitrogen, the matrix atoms containing oxygen; and forming a cap layer by forming a second insulating film free of fluidity on said first insulating film after said plasma processing by a plasma CVD using N2O, SiH4 and N2 at a substrate temperature of 350Â° C. wherein NH3 produced by the plasma processing is not absorbed into the first insulating layer since moisture is removed from the first insulating layer which prevents corrosion of the wiring.