Patent ID: 8836130

Claim:
A semiconductor device in which: a silver coating arranged on a semiconductor element and a silver coating arranged on a base are bonded directly, and wherein no void is present or a small void, if any, is present at an interface between the semiconductor element and the silver coating arranged on the semiconductor element, and no void is present or a small void, if any, is present at an interface between the base and the silver coating arranged on the base, and one or more silver abnormal growth grains and one or more voids are present in a bonded interface between the silver coating arranged on the semiconductor element and the silver coating arranged on the base, wherein the semiconductor element is a light emitting semiconductor element, the semiconductor element comprises a translucent inorganic substrate, a semiconductor layer formed on the translucent inorganic substrate, and an n-type electrode and a p-type electrode provided on the semiconductor layer, the semiconductor element further comprises a titanium backing provided on the opposite side to the side where the semiconductor layer of the translucent inorganic substrate is formed, and the silver coating arranged on the semiconductor element is provided on the surface of the backing.