Patent ID: 8916461
Filing Date: 2014-12-23
Classification: H01L

Abstract:
1. A method of forming a vertical electronic fuse structure, the method comprising: providing a first metallization level including a first metal structure having a top surface substantially flush with a top surface of the first metallization level; forming a capping layer on the top surface of the first metallization level; forming an opening in the capping layer that exposes a portion of the top surface of the first metal structure; forming an adhesion layer above the capping layer, wherein the adhesion layer lines the opening in the capping layer and contacts the first metal structure; forming an insulating layer above the adhesion layer; etching the insulating layer and the adhesion layer to form a fuse via recess, wherein the fuse via recess exposes the top surface of the first metal structure; and filling the fuse via recess to form a fuse via.