Patent ID: 8207611
Filing Date: 2012-06-26
Classification: H01L

Abstract:
1. A semiconductor device comprising: an intermediate insulating film formed over a plurality of first conductors formed over a semiconductor substrate; a plurality of contact holes formed in the intermediate insulating film and disposed over the plurality of first conductors; a plurality of contact plugs in the plurality of contact holes, respectively; and a plurality of second conductors formed over the plurality of contact plugs in the intermediate insulating film, respectively, and electrically connected to the plurality of first conductors via the contact plugs, wherein the semiconductor substrate has formed thereon a first element region where the plurality of first conductors and the plurality of contact plugs are provided in a first density; and a second element region disposed at least partially around the first element region, where the plurality of first conductors and the plurality of contact plugs are provided in a second density lower than the first density; and wherein the first element region includes an outermost region disposed near the second element region, in which at least one of the contact plugs is terminated below an upper surface of the intermediate insulating film.