Patent ID: 9029713
Filing Date: 2015-05-12
Classification: H01L,H05K,Y10T

Abstract:
1. A printed wiring board, comprising: a first substrate comprising a non-flexible base material and having a plurality of conductors including a conductor layer formed on a surface of the first substrate; a second substrate comprising a non-flexible base material and having a plurality of conductors including a conductor layer formed on a surface of the second substrate; an insulation layer comprising an insulative material and formed over the first substrate and the second substrate such that the insulation layer covers the conductor layers formed on the surfaces of the first and second substrates; and a wiring layer formed on the insulation layer and having a plurality of interlayer connection portions formed through the insulation layer such that the conductor layers formed on the surfaces of the first and second substrates are directly and electrically connected through the wiring layer, wherein the first substrate has an accommodation section configured to accommodate the second substrate, the insulation layer is formed over the first substrate and the second substrate such that the second substrate is embedded in the accommodation section of the first substrate, the insulation layer has a plurality of vias formed through the insulation layer, and the interlayer connection portions of the wiring layer are formed in the vias, respectively.