Patent ID: 7169697

Claim:
A method of manufacturing a semiconductor device, comprising: forming a first insulating film on a semiconductor substrate; selectively etching said first insulating film to form a first wiring trench on a surface of said first insulating film, a first contact hole extending through that portion of said first insulating film which is positioned between a bottom of said first wiring trench and the semiconductor substrate, and a second contact hole extending through said first insulating film; burying a first conductive film in said first wiring trench, said first contact hole and said second contact hole; forming a second insulating film on said first insulating film having said first conductive film buried therein; selectively etching said second insulating film to form in said second insulating film a second wiring trench connected to said second contact hole and positioned substantially in parallel to said first wiring trench; and burying a second conductive film in said second wiring trench.