Patent ID: 7989272

Claim:
A method of manufacturing a semiconductor device, comprising: forming a base insulating film over a substrate; forming a semiconductor film on the base insulating film; forming a gate insulating film so as to cover the semiconductor film and being in contact with the base insulating film; forming a gate electrode over the semiconductor film with the gate insulating film interposed therebetween; forming an impurity region in the semiconductor film; forming a first interlayer insulating film to cover the gate electrode; and forming a second interlayer insulating film on the first interlayer insulating film, wherein both of the base insulating film and the gate insulating film comprise a composition comprising carbon nitride and hydrogen, wherein vapor-phase growth is used with a mixture comprising carbide gas and one of nitrogen gas and nitride gas to form the composition comprising carbon nitride and hydrogen, wherein the composition comprising carbon nitride and hydrogen is formed at a temperature equal to or less than 100° C., and wherein the composition comprising carbon nitride and hydrogen comprises hydrogen from 30 to 45 atomic %.