Patent ID: 9040843
Filing Date: 2015-05-26
Classification: H01L,H05K

Abstract:
1. A multilayered printed circuit board, comprising: a substrate; a multilayered structure formed on the substrate and comprising a plurality of conductor circuits and a plurality of interlaminar resin insulating layers; and a stack-via structure comprising a plurality of via-holes and formed in the multilayered structure such that the via-holes are piled through the interlaminar resin insulating layers in the multilayered structure, wherein each of the via-holes has a filled via structure portion comprising a metal portion such that the metal portion is filling an opening of a respective one of the interlaminar resin insulating layers, the plurality of via-holes of the stack-via structure includes an outermost via-hole of the stack-via structure, and the outermost via-hole of the stack-via structure has a recess portion on an outer surface of the outermost via-hole.