Patent ID: 8456017
Filing Date: 2013-06-04
Classification: H01L

Abstract:
1. A through-silicon via, comprising: at least one through-via hole disposed between a first surface and a second surface opposite to the first surface of a semiconductor wafer or an interposer wafer and penetrating the semiconductor wafer or the interposer wafer; an insulation layer and a barrier layer covering a sidewall of the through-via hole completely; and a conductive material filling into the through-via hole and filled up the through-via hole that is covered with the insulation layer, the conductive material being a composite material at least comprising copper and particles of a supplementary material having a coefficient of thermal expansion lower than a coefficient of thermal expansion of copper and a thermal conductivity higher than a thermal conductivity of copper, wherein the supplementary material is selected from diamond, beryllium oxide, aluminum nitride, or aluminum oxide.