Patent ID: 7977238

Claim:
A method of manufacturing a semiconductor integrated circuit device, comprising steps of: (a) forming a first insulating film over a semiconductor substrate; (b) forming first and third grooves in the first insulating film, wherein the first and third grooves extend in a first direction; (c) forming a first wiring and a third wiring by burying a first conductive film into the first and third grooves, respectively; (d) forming a second insulating film over the first insulating film, the first wiring and the third wiring; (e) forming a third insulating film over the second insulating film; (f) forming a second groove in the third insulating film, wherein the second groove extends in a second direction, perpendicular to the first direction; (g) forming a first hole and a second hole in the second insulating film, respectively, wherein the first hole is connected with the first wiring and the second groove, and wherein the second hole is connected with the third wiring and the second groove; and (h) forming a second wiring, a first plug and a second plug by burying a second conductive film into the second groove, the first hole and the second hole, respectively, wherein the first conductive film and the second conductive film are formed of copper as a main component, wherein, in the second direction, the first wiring has a first end near the third wiring, and a second end distant from the third wiring, wherein, in the second direction, the first plug is arranged so that the distance from the center of the first plug to the first end of the first wiring differs from the distance from the center of the first plug to the second end of the first wiring, wherein, in the second direction, the third wiring has a first end near the first wiring, and a second end distant from the first wiring, wherein, in the second direction, the second plug is arranged so that the distance from the center of the second plug to the first end of the third wiring differs from the distance from the center of the second plug to the second end of the third wiring, wherein, in the second direction, the first plug is arranged near the first end of the first wiring, wherein, in the second direction, the second plug is arranged near the first end of the third wiring, and wherein the width of the first wiring, measured in the second direction, is larger than the width of the second wiring, measured in the first direction.