Patent ID: 8148819
Filing Date: 2012-04-03
Classification: H01L

Abstract:
1. A semiconductor device to be bonded and electrically connected to a mounting substrate by metal bonding, the semiconductor device comprising: a semiconductor substrate on which an electrode is provided, a metal bump being stacked on the electrode, the metal bump including (i) solder via which the semiconductor device is bonded and electrically connected to the mounting substrate and (ii) metal material, the metal material being any one of Cu, Au, and Ni, an intermetallic compound being formed by interdiffusion of the metal material and the solder, wherein the metal bump comprises at least one metal bump layer, each metal bump layer comprising a layer comprised of the metal material stacked on a layer comprised of the solder; and wherein the layer comprised of the solder has a thickness in a range of not less than 3 μm to not more than 12 μm.