Patent ID: 9661741
Date: 2017-05-23
CPC Classifications: H05K

Claim:
1. A printed wiring board, comprising: a plurality of conductive layers; a plurality of resin insulation layers; a through-hole conductor penetrating through at least one of the resin insulation layers such that the through-hole conductor has a first-surface-side land and a second-surface-side land; a first-surface-side signal line formed on one of the resin insulation layers such that the first-surface-side signal line is connecting the first-surface-side land and one of the conductive layers on the one of the resin insulation layers; and a second-surface-side signal line formed on one of the resin insulation layers such that the second-surface-side signal line is connecting the second-surface-side land and one of the conductive layers on the one of the resin insulation layers, wherein the plurality of conductive layers includes a first-surface-side conductive layer formed over the first-surface-side land of the through-hole conductor such that the first-surface-side conductive layer has a solid pattern having an opening portion corresponding to the first-surface-side land and formed concentric with the first-surface-side land, and a second-surface-side conductive layer formed over the second-surface-side land of the through-hole conductor such that the second-surface-side conductive layer has a solid pattern having an opening portion corresponding to the second-surface-side land and formed concentric with the second-surface-side land.