Patent ID: 8299567
Filing Date: 2012-10-30
Classification: H01L

Abstract:
1. A semiconductor structure comprising: a via of a first conductive material having a bottom and sidewalls, at least a portion of said sidewalls being covered by a conductive liner, said bottom of said via being formed directly on top of a dielectric layer; and a first and a second conductive path of a second conductive material formed on top of said dielectric layer, said first and second conductive paths being conductively connected through, and only through, said via at said sidewalls, wherein conductivity of at least said first conductive path is greater than conductivity of said conductive liner covering said via at said portion of said sidewalls with said portion of said sidewalls being a sidewall between said first conductive path and said via, and wherein at least one void exists inside said first conductive path at a location adjacent to said portion of said sidewalls, wherein said at least one void being caused by electro-migration and occupying more than half of a cross-section of said first conductive path.