Patent ID: 6673725
Filing Date: 2004-01-06
Classification: C23C,H01L

Abstract:
A semiconductor device manufacturing method for forming an insulating film having a low dielectric constant on a substrate, comprising:providing a pair of parallel plate electrodes defining a space therebetween and holding the substrate on one of the electrodes; introducing, into the space between the electrodes, a flow of a film-forming gas containing (1) at least one silicon compound selected from the group consisting of alkyl compounds having a siloxane bond and methylsilanes (SiHn(CH3)4âˆ’n: n=0, 1, 2, 3), (2) an oxygen-containing gas selected from the group consisting of N2O, H2O and CO2, and (3) ammonia (NH3); setting the ratio of flow rate of ammonia to flow rate of the at least one silicon compound to provide the insulating film with a relative dielectric constant of 3.1 or less; and converting the film-forming gas into a plasma by application of AC power to the electrodes for reaction to form the insulating film.