Patent ID: 8847078
Filing Date: 2014-09-30
Classification: H01L,H05K

Abstract:
1. A printed wiring board, comprising: an outermost interlayer resin insulation layer; an outermost conductive layer formed on the outermost interlayer resin insulation layer and including a plurality of alignment marks; a connection wiring structure connecting the alignment marks; a solder-resist layer formed on the outermost interlayer resin insulation layer and the outermost conductive layer; and a lower interlayer resin insulation layer formed underneath the outermost interlayer resin insulation layer, wherein the solder-resist layer has a plurality of openings exposing the alignment marks, respectively, and each of the alignment marks has an electroless plated film formed on each of the alignment marks, the connection wiring structure is positioned between the outermost interlayer resin insulation layer and the lower interlayer resin insulation layer, and the connection wiring structure is connected to the alignment marks through a plurality of via conductors formed in the outermost interlayer resin insulation layer.