Patent ID: 8339233
Filing Date: 2012-12-25
Classification: H01F

Abstract:
1. A three dimensional inductor, disposed in at least one substrate, wherein the substrate comprises at least one dielectric layer, a first conductive wire layer and a second conductive wire layer, the dielectric layer has a first surface and a second surface, the first conductive wire layer disposed on the first surface of the dielectric layer and the second conductive wire layer disposed on the second surface of the dielectric layer, comprising: a first coil, located at a first plane, disposed in the first conductive wire layer; a second coil, electrically connected to the first coil, located at a second plane, disposed in the dielectric layer and the second conductive wire layer; and first and second external connection points; wherein the first plane is not parallel to or is vertical to the second plane such that the magnetic field generated by the first coil and the magnetic field generated by the second coil are not parallel to each other or are vertical to each other; wherein a first lead is connected between the first coil and the first external connection point, and a second lead is connected between the second coil and the second external connection point; wherein the second coil comprises a first via wire, a second via wire, a first metal wire, a first pad and a second pad; and wherein the first via wire is connected between a third pad and the first pad, the second via wire is connected between a fourth pad and the second pad, the first metal wire is connected between the first pad and the second pad, the first coil and the second coil are connected at the third pad, the third pad is connected to the first lead via the first coil and the fourth pad is connected to the second lead.