Patent ID: 8188600

Claim:
A semiconductor device including a wire composed of alloy, and a first wire-protection film covering an upper surface of said alloy wire therewith, wherein said first wire-protection film contains at least aluminum said first wire-protection film is comprised of one of a SiN film, a SiC film, a SiCN film, a SiOC film, a SiOCH film, a SiN film containing organic material, a SiC film containing organic material, a SiCN film containing organic material, a SiOC film containing organic material, a SiOCH film containing organic material, a SiN film containing organic material as a principal constituent, a SiC film containing organic material as a principal constituent, a SiCN film containing organic material as a principal constituent, a SiOC film containing organic material as a principal constituent, a SiOCH film containing organic material as a principal constituent, a SiN film containing organic material as a principal constituent and further containing SiO, a SiC film containing organic material as a principal constituent and further containing SiO, a SiCN film containing organic material as a principal constituent and further containing SiO, a SiOC film containing organic material as a principal constituent and further containing SiO, and a SiOCH film containing organic material as a principal constituent and further containing SiO, said alloy wire contains at least one of aluminum, a concentration of aluminum in said alloy wire is smaller than 0.1 at.% in a central area of said alloy wire, and equal to or greater than 0.1 at.%, and equal to or smaller than 1.5 at.% in a vicinity of said first wire-protection film, the central area of said alloy wire is defined as an area extending from a center of said alloy wire in a height-wise direction of said alloy wire by 10% of a height of said alloy wire, and further extending from the center of said alloy wire in a width-wise direction of said alloy wire by 10% of a width of said alloy wire, and the vicinity of said first wire-protection film is defined as an area extending from said first wire-protection film by 10% of the height of said alloy wire.