Patent ID: 7927998
Filing Date: 2011-04-19
Classification: H01L,H05K

Abstract:
1. A semiconductor device fabrication method comprising: forming a resin layer over a semiconductor substrate; cutting a surface part of the resin layer with a cutting tool having a cutting blade so that a ten-point height of irregularities of the surface of the resin layer is 0.5-5 μm; forming a seed layer on the resin layer; and forming on the seed layer an interconnection of a plating film by electroplating, which further comprises, before the forming the resin layer, forming a bump electrode by ball bonding, and in which in the forming the resin layer, the resin layer is formed, burying the bump electrode, in the cutting the surface part of the resin layer, an upper part of the bump electrode is also cut by the cutting tool, in the forming the seed layer, the seed layer is formed also on the bump electrode, and the semiconductor device fabrication method is free from immersing the resin layer in a chemical liquid.