Patent ID: 11903146
Assignee: KYOCERA CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A printed wiring board, comprising: a core substrate; and one or more build-up layers, wherein the core substrate corresponds to a layer range where an interlayer connection conductor that constitutes an inner via is continuous, each of the one or more build-up layers comprises a resin layer layered on the core substrate and a conductor layer on the resin layer, a via inner space inside the interlayer connection conductor that constitutes the inner via is hollow, the via inner space is connected to an outside through one or more holes provided in the one or more build-up layers, wherein the one or more build-up layers are a plurality of build-up layers that continue in a layering direction, the one or more holes are a plurality of holes which are provided in the plurality of build-up layers so as to be continuous, the plurality of holes are hollow such that the via inner space is connected and open to the outside through the plurality of holes; and wherein the plurality of holes are continuous with the via inner space.