Patent ID: 7241676
Filing Date: 2007-07-10
Classification: H01L

Abstract:
1. A method for manufacturing a semiconductor device including a continuously extending moisture-proof ring, comprising the steps of: forming said moisture-proof ring, forming a first interlayer insulation film above a semiconductor substrate; forming, in said first interlayer insulation film, a first conductor pattern, and a first barrier metal film covering at least side faces of said first conductor pattern between said first interlayer insulation film and said first conductor pattern; forming a second interlayer insulation film on said first interlayer insulation film; and forming, in said second interlayer insulation film, a via contact portion for connecting said first conductor pattern to a second conductor pattern to be formed above said first conductor pattern, and a second barrier metal film covering side faces and a bottom face of said via contact portion, wherein said moisture-proof ring is formed such that a bottom face portion of said second barrier metal film, covering the bottom face of said via contact portion, of said second barrier metal film, is in contact with at least a portion of an upper end portion on the outer side of said semiconductor device of said first barrier metal film and such that a side face of said second barrier metal film is formed at a position offset from a side face of said first barrier metal film to the outer side of said semiconductor device.