Patent ID: 8575718
Filing Date: 2013-11-05
Classification: H01L

Abstract:
1. An electrical-fuse (e-fuse) device comprising: a first section of a first conductive layer and a second section of said first conductive layer that are laterally spaced from each other; a second conductive layer vertically separated from said first and second sections of said first conductive layer; an insulating layer comprising a dielectric material and located between said first conductive layer and said second conductive layer; at least one first via electrically connecting said first section of said first conductive layer and said second conductive layer and including side surfaces that contact said dielectric material of said insulating layer; and a combination of a second via and a barrier layer in a U-shaped configuration, said combination electrically connecting said second section of said first conductive layer and said second conductive layer and embedded within said insulating layer, wherein said second via has a same material composition as said at least one first via and is spaced from said dielectric material of said insulating layer by said barrier layer, and said barrier layer comprises a horizontal portion and vertical portions that extend upward from a periphery of said horizontal portion and embeds said second via therein, wherein a bottom surface of said horizontal portion of said barrier layer contacts said second section of said first conductive layer.