Patent ID: 8097931

Claim:
A fuse part in a semiconductor device having a plurality of fuse lines extended along a first direction with a given width along a second direction, the fuse part comprising: a first conductive pattern having a space part formed in a fuse line region over a substrate, wherein portions of the first conductive pattern are spaced apart by the space part along the first direction; a first insulation pattern formed over the space part, the first insulation pattern having a width smaller than a width of the first conductive pattern along the second direction and a thickness greater than a thickness of the first conductive pattern along the first direction; a second conductive pattern formed over the first insulation pattern, the second conductive pattern having a width greater than the width of the first insulation pattern along the second direction; nitride-based spacers formed over sidewalls of the second conductive pattern and a cavity below the second conductive pattern; and a second insulation pattern formed over the second conductive pattern and the nitride-based spacers, the second insulation pattern forming a fuse box that exposes the second conductive pattern.