Patent ID: 7402464
Filing Date: 2008-07-22
Classification: H01L

Abstract:
1. A method of manufacturing a fuse box of a semiconductor device comprising: forming a lower line on a semiconductor substrate; forming a lower interlayer insulating layer on the lower line; forming a hole in the lower interlayer insulating layer to expose a portion of the lower line; forming an upper line on the lower interlayer insulating layer, wherein the upper line overlaps a first region of the lower line such that a second region of the lower line that is contiguous with the first region extends beyond the upper line, wherein the portion of the lower line exposed by the hole is in a portion of the second region of the lower line that extends beyond the upper line; forming an upper interlayer insulating layer on the upper line; and forming a fuse on the upper interlayer insulating layer that is electrically connected to the lower and the upper lines, wherein the fuse is electrically connected to the lower line through the hole.