Patent ID: 8030577
Filing Date: 2011-10-04
Classification: C23G,H01L,H05K,Y10T

Abstract:
1. A printed wiring board comprising: a core substrate; a lower conductor circuit formed over the core substrate; a lower interlayer resin insulation layer formed over the lower conductor circuit; an upper conductor circuit formed over the lower interlayer resin insulation layer; a metal layer formed on the upper conductor circuit and comprising at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Hf, Ta, W, Re, Os, Ir, Pt, Au, Rf, Db, Sg, Bh, Hs, Mt, Ds, Rg, Al and Sn; and an upper interlayer resin insulation layer formed over the upper conductor circuit and the metal layer, wherein the upper conductor circuit has a flat surface, and the metal layer is formed between the upper interlayer resin insulation layer and a surface of the upper conductor circuit.