Inductor device, method for manufacturing the same and printed wiring board

摘要

An inductor device for a printed wiring board has an insulation layer having a first penetrating hole penetrating through the insulation layer, a magnetic core structure including a magnetic material filled in the first penetrating hole through the insulation layer such that the magnetic core structure including a first magnetic body layer formed in the first penetrating hole is formed through the insulation layer, and a conductor layer formed on the insulation layer and having an inductor pattern such that the inductor pattern is surrounding the circumference of the magnetic core structure.

主权项

1. An inductor device for a printed wiring board, comprising:
an insulation layer having a first penetrating hole penetrating through the insulation layer such that the first penetrating hole is extending from a first surface of the insulation layer to a second surface of the insulation layer on an opposite side with respect to the first surface; a magnetic core structure comprising a magnetic material filled in the first penetrating hole through the insulation layer such that the magnetic core structure comprising a first magnetic body layer formed in the first penetrating hole is formed through the insulation layer and extending from the first surface to the second surface of the insulation layer; a conductor layer formed on the first surface of the insulation layer and having an inductor pattern such that the inductor pattern is surrounding a circumference of an end portion of the magnetic core structure on the first surface of the insulation layer; and a second magnetic body layer formed on the inductor pattern such that the second magnetic body layer is covering the inductor pattern of the conductor layer, wherein the magnetic material forming the magnetic core structure comprises a resin material and magnetic particles included in the resin material.