Patent ID: 7521350
Filing Date: 2009-04-21
Classification: H01L

Abstract:
1. A manufacturing method of a semiconductor device, comprising: providing a first insulating film whose relative dielectric constant is at most a predetermined value above a substrate; providing a second insulating film whose relative dielectric constant is greater than the predetermined value on a surface of the first insulating film; forming a recess for an effective wire, passing through the second insulating film and extending into the first insulating film, and also forming a recess for a dummy wire, passing through the second insulating film and extending into the first insulating film in a predetermined area spaced from a formed area of the recess for the effective wire; providing a conductive material on a surface of the second insulating film, inside the recess for the effective wire, and inside the recess for the dummy wire; and providing an effective wire by leaving the conductive material inside the recess for the effective wire, and providing a dummy wire by leaving the conductive material inside the recess for the dummy wire in the predetermined area spaced from the formed area of the effective wire, by polishing and removing the conductive material on the surface of the second insulating film, wherein: