Patent ID: 7868417
Filing Date: 2011-01-11
Classification: G11C,H01L

Abstract:
1. A semiconductor device comprising: a plurality of lower-layer wirings extending in a first direction; a plurality of fuse elements that can be disconnected by irradiating a laser beam, the plurality of fuse elements being formed over the plurality of lower-layer wirings; a plurality of through-hole electrodes connecting between an end part the plurality of fuse elements and the plurality of lower-layer wirings; and attenuation members that can attenuate the laser beam located between the plurality of fuse elements in a second direction perpendicular to the first direction as viewed two-dimensionally, wherein the attenuation members comprise a plurality of columnar bodies formed substantially on straight lines connecting between a fuse element in the plurality of fuse elements and the end part of other fuse elements in the plurality of fuse elements which are adjacent to the fuse element.