Patent ID: 8324662
Filing Date: 2012-12-04
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate; and an electric fuse formed on the substrate, the electric fuse including: wherein the electric fuse is disconnected by a flowing-out portion at the first interconnect that comprises a conductive material forming the electric fuse which flows outwardly during disconnection, wherein each of the first interconnect, the second interconnect, the third interconnect, the first via portion, and the second via portion comprises a copper-containing metal, and wherein the electric fuse is disconnected without cutting the second interconnect, wherein the second via portion has a contact area with the second interconnect, which is larger than a contact area of the first via portion with the second interconnect, wherein the second via portion comprises a single via, and wherein, in a plan view, a length of the second interconnect in a first direction is substantially a same as a length of the first interconnect in the first direction at an overlap portion between the first and second interconnects, wherein a width of the overlap portion between the first and second interconnects in a second direction perpendicular to the first direction is smaller than a width of an overlap portion between the second and third interconnects in the second direction, wherein an entire non-overlap portion of the second interconnect which is not overlapped by the first and third interconnects is in a rectangular shape, wherein each of the first and second via portions is a single via, and a width of the second via portion is greater than a width of the first via portion.