Patent ID: 9653396
Date: 2017-05-16
CPC Classifications: H01L

Claim:
1. A semiconductor device comprising: a semiconductor substrate; a first coil formed on the semiconductor substrate via a first insulation film; a second insulation film formed on the semiconductor substrate so as to cover the first insulation film and the first coil; a first pad formed on the second insulation film and disposed at a position not overlapped with the first coil in a planar view; a laminated insulation film formed on the second insulation film, the laminated insulation film having a first opening from which the first pad is exposed; a second coil formed on the laminated insulation film and disposed above the first coil; and a first wiring formed on the laminated insulation film including an upper portion of the first pad exposed from the first opening, the first wiring being electrically connected to the first pad, wherein the laminated insulation film includes a silicon oxide film, a silicon nitride film on the silicon oxide film, and a resin film on the silicon nitride film, the first coil and the second coil are not connected by a conductor but magnetically coupled to each other, and a part of the first pad is covered by the laminated insulation film.