Method of manufacturing a multilayered dielectric film and semiconductor device

摘要

The present invention relates to a semiconductor device manufacturing method for forming an interlayer insulating film having a low dielectric constant by coating a copper wiring. The semiconductor device manufacturing method comprises the steps of preparing a substrate 21 from a surface of which copper wirings 23 are exposed, and forming an interlayer insulating film having a low dielectric constant on the substrate 21, wherein the interlayer insulating film is formed of a multi-layered insulating film including a insulating film 24 that contacts with the copper wirings 23, and the insulating film 24 is formed by plasmanizing a film forming gas containing an alkyl compound having an Si-O-Si bond and one oxygen-containing gas selected from the group consisting of N2O, H2O, and CO2, whose flow rate is equal to or less than a flow rate of the siloxane, to react mutually. <IMAGE> <IMAGE> <IMAGE> <IMAGE>