Patent ID: 8609534

Claim:
A method of fabricating an electrical fuse structure comprising: providing a patterned dielectric material including a via opening and a line opening atop a metal layer, wherein the line opening is located above and connected to the via opening and the via opening is located above the metal layer, and wherein said metal layer has outermost edges that are vertically coincident to outermost edges of said patterned dielectric material, wherein said providing the patterned dielectric material includes utilizing at least one patterned photoresist; removing said at least one patterned photoresist from atop the patterned dielectric material; forming dielectric spacers within the via opening and the line opening, after removing said at least one patterned photoresist from atop said patterned dielectric material, said dielectric spacers are located on sidewalls of the patterned dielectric material, wherein said forming the dielectric spacers includes depositing a spacer material and performing a directional etching step; and forming a conductive feature including at least a diffusion barrier and a conductive material within remaining portions of the via opening and the line opening, wherein said conductive feature is separated from said patterned dielectric material by said dielectric spacers.