Patent ID: 6060382
Filing Date: 2000-05-09
Classification: H01L

Abstract:
A method for forming an insulating film between metal wiring of a semiconductor device, the method comprising:a) forming an insulating film over a semiconductor substrate;b) forming metal wiring on said insulating film;c) treating said metal wiring with gas plasma, wherein the plasma treatment is carried out:1) using Ar plasma;2) in a dual frequency manner;3) using a power ranging from 200 W to 400 W at a high frequency;4) using a power of not lower than 50 W at a low frequency;5) at a temperature of not less than 25.degree. C.;6) for 10 seconds or more;d) forming an oxide film, which contains silicon in an excessive amount, over an entire exposed surface of a resulting surface that is obtained after said plasma treatment; ande) forming a second insulating film over said oxide film.