Patent ID: 8865588

Claim:
A method of manufacturing a semiconductor device comprising: forming a first interconnection and a second interconnection above a semiconductor substrate; forming a first sidewall insulating film on a side wall of the first interconnection, and a second side wall insulating film on a side wall of the second interconnection; forming a sacrificial film above the semiconductor substrate with the first interconnection, the first sidewall insulating film, the second interconnection and the second sidewall insulating film formed on; forming an opening in the sacrificial film in a region between the first interconnection and the second interconnection for a third interconnection to be formed in; forming a conductive film above the semiconductor substrate with the sacrificial film formed on; and selectively removing the conductive film above the sacrificial film to form the third interconnection of the conductive film in the opening, spaced from the first interconnection and the second interconnection by the first sidewall insulating film and the second sidewall insulating film.