Patent ID: 7238980
Filing Date: 2007-07-03
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; a transistor provided on said semiconductor substrate; a first interlayer insulating film provided on said semiconductor substrate to cover said transistor; a first electroconducting plug and a second electroconducting plug provided within said first interlayer insulating film to couple thereof to said transistor; an interconnect provided on said first interlayer insulating film to couple thereof to said first electroconducting plug; a second interlayer insulating film provided on said first interlayer insulating film to cover said interconnect; a third electroconducting plug provided within said second interlayer insulating film to couple thereof to said second electroconducting plug wherein a portion of said third electroconducting plug is disposed within said first interlayer insulting film; and a capacitive element provided on said second interlayer insulating film to couple thereof to said third electroconducting plug, wherein an upper surface of said second electroconducting plug is lower than an upper surface of said first electroconducting plug, and wherein a cross-sectional shape of said first electroconducting plug is rectangular or trapezoidal.