Patent ID: 9287034
Filing Date: 2016-03-15
CPC Classification: H01F,H05K

Claim Text:
1. A printed wiring board, comprising: a core base having an opening portion; an inductor component accommodated in the opening portion of the core base; and a filler resin filling a gap formed between the inductor component and a side wall of the opening portion of the core base, wherein the inductor component has a support layer, a first conductive pattern formed on the support layer, an interlayer insulation layer formed on the support layer and the first conductive pattern, a second conductive pattern formed on the interlayer insulation layer, and a via conductor formed in the interlayer insulation layer and connecting the first conductive pattern and the second conductive pattern, the interlayer insulation layer of the inductor component includes a magnetic layer and a resin layer covering the magnetic layer, the magnetic layer of the interlayer insulation layer in the inductor component includes a magnetic material and a resin material and has a first penetrating hole, the interlayer insulation layer has a second penetrating hole penetrating through the resin layer such that the second penetrating hole passes through the first penetrating hole and extends to the first conductive pattern, and the via conductor is formed in the second penetrating hole.