Patent ID: 7696555

Claim:
A semiconductor device comprising: a semiconductor substrate structure having a plurality of semiconductor elements formed therein; a first insulating layer formed above said semiconductor substrate structure; a plurality of column-like conductive plugs having column-like shape and formed through a full thickness of said first insulating layer; a plurality of elongated wall-like conductive plugs having wall-like shape and formed through the full thickness of said first insulating layer; a second insulating layer formed on said first insulating layer, covering said column-like conductive plugs and wall-like conductive plugs; a plurality of first wirings including a first portion formed through a full thickness of said second insulating layer and connected to at least one of said column-like conductive plugs and a second portion formed in said second insulating layer to an intermediate depth and crossing at least one of said wall-like conductive plugs in separated state; and a second wiring formed through the full thickness of said second insulating layer, in a manner extending in uniform thickness over all regions between adjacent ones of said plurality of wall-like conductive plugs and over said plurality of wall-like conductive plugs, and being connected to and crossing said plurality of wall-like conductive plugs.