Patent ID: 9565756
Date: 2017-02-07
CPC Classifications: H01L,H05K

Claim:
1. A wiring board, comprising: a first insulation layer; a plurality of first conductive patterns formed on the first insulation layer; a second insulation layer formed on the first insulation layer and the first conductive patterns and having an opening portion; a wiring structure accommodated in the opening portion of the second insulation layer and comprising an insulation layer and a plurality of conductive patterns on the insulation layer; a plurality of second conductive patterns formed on the second insulation layer; a via conductor formed in the second insulation layer and connecting one of the first conductive patterns and one of the second conductive patterns; a third insulation layer formed on the conductive patterns in the wiring structure; a plurality of conductive pads formed on the third insulation layer; and a plurality of mounting pads connected to the conductive pads, respectively, wherein the plurality of mounting pads include a plurality of first pads positioned to be connected to a first semiconductor element and a plurality of second pads positioned to be connected to a second semiconductor element, and the plurality of mounting pads is formed such that a distance set between the first pads is set smaller than a distance set between the second pads.