Patent ID: 8143986

Claim:
An inductor comprising at least two four rolls of inductor placed in an insulating film formed on a base substrate, wherein the inductor comprises a first inductor, wherein the first inductor comprises a one go-around of a first go-around wiring and a one go-around of a second go-around wiring, the one go-around of the first go-around wiring and the one go-around of the second go-around wiring being formed in first and second wiring layers, respectively, of a plurality of wiring layers formed in the insulating film, wherein the one go-around of the first go-around wiring formed in the first wiring layer and the one go-around of the second go-around wiring formed in the second wiring layer have one end connected to each other by a first via, wherein the one go-around of the first go-around wiring formed in the first wiring layer and the one go-around of the second go-around wiring formed in the second wiring layer are placed at substantially the same position in a surface of the base substrate when viewed from an upper side of the base substrate, wherein the first inductor further comprises a one go-around of a third go-around wiring formed in the second wiring layer, the one go-around of the third go-around wiring having one end directly connected, without use of any via, to another end of the one go-around of the second go-around wiring in the second wiring layer, wherein the one go-around of the third go-around wiring is placed inside the one go-around of the first go-around wiring and the one go-around of the second go-around wiring in the second wiring layer when viewed from the upper side of the base substrate, wherein the first inductor further comprises a one go-around of a fourth go-around wiring formed in the first wiring layer, the one go-around of the fourth go-around wiring having one end connected by a second via, to another end of the one go-around of the third go-around wiring, wherein the one go-around of the fourth go-around wiring is placed inside the one go-around of the first go-around wiring and the one go-around of the second go-around wiring in the first wiring layer when viewed from the upper side of the base substrate, and wherein the one go-around of the third go-around wiring formed in the second wiring layer and the one go-around of the fourth go-around wiring formed in the first wiring layer are placed at substantially the same position in the surface of the base substrate when viewed from the upper side of the base substrate.