Patent ID: 8586447

Claim:
A method of manufacturing a semiconductor device including the following steps of: (a) forming a first conductor film above a semiconductor substrate; (b) selectively removing the first conductor film by a dry etching method using a photoresist pattern as a mask to form a plurality of first interconnections having a predetermined region; (c) forming a first insulative film above the first interconnections and in a space region between the first interconnections; (d) leaving the first insulative film in the predetermined region below a through hole that exposes an upper surface of the first interconnections to be formed in a subsequent step and a peripheral region thereof, and removing the first insulative film from a portion other than each of the regions described above; (e) forming a second insulative film above the first interconnections while leaving an air gap in the space region between the first interconnections from which the first insulative film has been removed; (f) forming the through hole penetrating the first insulative film and the second insulative film above the first interconnections; and (g) forming a second conductor film in the inside of the through hole.