Patent ID: 6894598

Claim:
An inductor comprising: a semiconductor substrate; a laminated structure including an insulating layer and a wiring layer layered alternately on said semiconductor substrate, wherein said laminated structure comprises a first layer structure, a second layer structure, and a first insulating layer interposed between the first and second layer structures, said first layer structure comprises a first wiring layer on which a first winding part and a second winding part in the same plane and disposed adjacent each other are wound, said second layer structure comprises a second wiring layer on which a first wiring part is disposed, having a single path from one terminal, and; said first insulating layer comprises a first via hole and a second via hole connecting said first wiring layer to said second wiring layer, a first terminal of said first winding part is connected to a second terminal of said first wiring part through said first via hole, and a third terminal of said second winding part is connected to a fourth terminal of said first wiring part through said second via hole, and a first current flows through said first winding part from a fifth terminal to said first terminal, and a second current flows through said second winding part from said third terminal to a sixth terminal, with directions of the first and second currents being opposite each other when a voltage is applied across said fifth terminal of said first winding part and said sixth terminal of said second winding part.