Patent ID: 8597969

Claim:
A method for manufacturing an optical semiconductor device comprising: depositing a semiconductor laminated body including at least a light emitting layer on a semiconductor growing substrate; forming a first metal body including at least one first metal layer on said semiconductor laminated body; forming a second metal body including at least one second metal layer on a support substrate; wafer-bonding said semiconductor laminated body to said support substrate by applying a pressure-welding bonding process to at least one adhesive layer in a surface side of at least one of said first and second metal bodies to form a eutectic alloy layer between said first and second metal bodies; and removing said semiconductor growing substrate after said wafer-bonding, wherein at least one of said forming said first metal body and said forming said second metal body comprises forming a corresponding one of said first metal layer and said second metal layer to have a triple structure formed by two tight portions and a coarse portion sandwiched by said tight portions, materials of said tight portions being the same as that of said coarse portion.