Patent ID: 9418934
Filing Date: 2016-08-16
CPC Classification: H01L

Claim Text:
1. An interconnect structure, comprising: a trench opening located within a dielectric material layer present on a substrate, the trench opening comprising a plurality of first trench portions having a first width and at least one second trench portion having a second width greater than the first width, the at least one second trench portion separating the plurality of first trench portions from each other; a first diffusion barrier present on sidewalls and a bottom surface of the trench opening; a first liner present on the first diffusion barrier; first conductive material portions present on portions of the first liner located within the plurality of first trench portions, each first conductive material portion filling a remaining space of each of the plurality of first trench portions; and an electromigration blocking island located within the at least one second trench portion and abutting respective ends of adjacent first conductive material portions, the electromigration blocking island comprising a second diffusion barrier present on portions of the first liner located in the at least one second trench portion and the respective ends of the adjacent first conductive material portions, a second liner present on the second diffusion barrier, and a second conductive material portion present on the second liner and filling a remaining space of the at least one second trench portion.