Patent ID: 7612453

Claim:
A semiconductor device, comprising: an interconnect layer including a plurality of interconnects; a first cap metal film provided to contact an upper portion of said interconnect and covering the upper portion of said interconnect; a conductive via provided on an upper portion of said first cap metal film and connected to said interconnect; a contiguously integrated insulating film provided from a side wall of said interconnect to a side wall of said via and formed so as to cover the side wall of said interconnect, the upper portion of said interconnect, and the side wall of said via, and an upper portion of said insulating film is denser than a lower portion of said insulating film; and a reinforcing insulating film disposed under said insulating film and contact with a lower portion of the side wall of said interconnect, wherein a thickness of said reinforcing insulating film is substantially uniform and said reinforcing insulating film has greater film density than said insulating film.