Patent ID: 7645645
Filing Date: 2010-01-12
Classification: H01L

Abstract:
1. A method of fabricating a fuse for an integrated circuit, the method comprising: providing a supporting surface with a support structure disposed over the supporting surface; forming a fuse extending between the supporting surface and an upper surface of the support structure, the fuse comprising a first terminal portion and a second terminal portion interconnected by a fuse element; wherein the first terminal portion resides at the supporting surface and the second terminal portion resides at the upper surface of the support structure, and wherein the interconnecting fuse element transitions between the first terminal portion and the second terminal portion disposed at different heights relative to the supporting surface; and wherein forming the fuse comprises forming the first terminal portion and the second terminal portion to be oriented parallel to the supporting surface, and the fuse element to include a portion oriented orthogonal to the supporting surface, wherein the fuse element further includes at least one right angle bend where transitioning from at least one of the first terminal portion and the second terminal portion to the orthogonal oriented portion of the fuse element, wherein the at least one right angle bend in the fuse element facilitates programming of the fuse by enhancing current density within the fuse element with application of a programming voltage across the first terminal portion and the second terminal portion.