Patent ID: 7683644

Claim:
A structure, comprising: an electrically conductive test wire in a first dielectric layer, said first dielectric layer over a top surface of a substrate, a bottom surface of said test wire facing said top surface of said substrate, said test wire having first and second ends, a top surface of said test wire opposite said bottom surface of said test wire; an electrically conductive ring-shaped first monitor structure in said first dielectric layer, a bottom surface of said first monitor structure facing said top surface of said substrate, said first monitor structure electrically isolated from said test wire, said first monitor structure surrounding a perimeter of said test wire; an electrically conductive second monitor structure in a second dielectric layer, said second dielectric layer on a top surface of said first dielectric layer, a bottom surface of said second monitor structure facing a top surface of said test wire, said second monitor structure electrically isolated from said test wire, said second monitor structure extending over said first end of said test wire; and an electrically conductive first via contacting said first end of said test wire and an electrically conductive second via electrically contacting said second end.