Patent ID: 7829392
Filing Date: 2010-11-09
Classification: H01L

Abstract:
1. A method for manufacturing a fuse box of a semiconductor device, the method comprising: forming an interlayer dielectric film over a semiconductor substrate including a predetermined lower structure; forming a metal line and a fuse over the interlayer dielectric film resulting in a fuse structure, wherein a cross section of layers of the fuse has a trapezoid shape; forming a first protective film over the fuse structure; etching the first protective film and the fuse to a predetermined depth by a photo-etching process with a repair mask, thereby forming an open region; and forming a second protective film on the fuse exposed by the open region, wherein the second protective film covering the fuse includes a protruding portion, sides of the protruding portion being vertical to a top of the fuse and a top of the protruding portion being horizontal to the top of the fuse.