Patent ID: 8642897

Claim:
A wiring board, comprising: a core substrate having an accommodation portion and having a first surface and a second surface on an opposite side of the first surface; an electronic component accommodated in the accommodation portion of the core substrate, the electronic component comprising a substrate, a resin layer formed on a surface of the substrate and an electrode formed on the resin layer; a first interlayer resin insulation layer formed on the first surface of the core substrate and a surface of the substrate of the electronic component; and a second interlayer resin insulation layer formed on the second surface of the core substrate and a surface of the substrate having the resin layer and electrode of the electronic component, wherein the first interlayer resin insulation layer has a resin in an amount which is greater than an amount of a resin in the second interlayer resin insulation layer such that a total amount of a resin component including the resin in the first interlayer resin insulation layer is adjusted to be substantially same as a total amount of a resin component including the resin in the second interlayer resin insulation layer and a resin in the resin layer of the electronic component.