Patent ID: 7547938
Filing Date: 2009-06-16
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; conductive structures on the substrate, each of the conductive structures having a line shape along a first direction parallel to the substrate, wherein each of the conductive structures includes a conductive layer pattern and a capping layer pattern on the conductive layer pattern; insulating spacers partially covering upper sidewalls of the conductive structures; an insulation structure on the conductive structures, wherein the insulation structure includes an insulation layer pattern partially covering lower sidewalls of the conductive structures, and the insulating layer pattern extends further away from the substrate than the conductive layer pattern; and contact plugs between adjacent pairs of the conductive structures, wherein each of the contact plugs extend from an upper surface of the insulating structure through the insulating structure to be electrically connected to a portion of the substrate, an upper portion of each of the contact plugs is substantially larger than a lower portion thereof, an upper face of each of the contact plugs has a first width along the first direction and a second width along a second direction parallel to the substrate and substantially perpendicular to the first direction, and the first width is substantially larger than the second width.