Patent ID: 9553063
Date: 2017-01-24
CPC Classifications: H01L

Claim:
1. A semiconductor device, comprising a mounting board and a semiconductor element, wherein the semiconductor element is mounted on the mounting board through a metal nanoparticles sintered layer, wherein the metal nanoparticles sintered layer comprises at least one of Ag-nanoparticles or Cu-nanoparticles, and wherein the semiconductor element comprises an electrode, wherein the electrode comprises: a Ni-inclusion metal layer comprising nickel disposed on a side of at least one surface of a semiconductor-element constituting part of the semiconductor element; a Ni-barrier metal layer disposed outwardly on a side of the Ni-inclusion metal layer opposite to the side toward the semiconductor-element constituting part; a surface metal layer disposed outwardly on a side of the Ni-barrier metal layer opposite to the side toward the semiconductor-element constituting part; a metal silicide layer disposed on the at least one surface of the semiconductor-element constituting part; and an adhesion metal layer disposed on a surface of the metal silicide layer on a side opposite to the side toward the semiconductor-element constituting part, wherein the Ni-barrier metal layer comprises at least one of metallic copper or a copper alloy which suppresses diffusion of the nickel toward the surface metal layer, and wherein the Ni-inclusion metal layer is disposed on a surface of the adhesion metal layer on a side opposite to the side toward the semiconductor-element constituting part, and wherein the Ni-barrier metal layer comprises a copper alloy.