Patent ID: 6515343
Filing Date: 2003-02-04
Classification: H01L

Abstract:
An antifuse structure, comprising:a first conductor of a first layer of interconnect, the first conductor having a substantially planar upper surface; a second conductor of a second layer of interconnect; an interlayer dielectric layer disposed at least partly between the first layer of interconnect and the second layer of interconnect; an antifuse comprising a programmable material layer, the antifuse being disposed between a first portion of the planar upper surface of the first conductor and the second conductor; and an insulating diffusion barrier layer disposed over a plurality of sidewalls of the antifuse, the insulating diffusion barrier layer separating the interlayer dielectric layer from a sidewall of the programmable material layer of the antifuse, the antifuse structure being programmable to couple the first conductor to the second conductor.