Patent ID: 7897990

Claim:
A semiconductor light-emitting element mounting member comprising: a substrate; and a metal film formed on a surface of said substrate, formed from Ag alone, and functioning as an electrode layer for mounting at least one of a semiconductor light-emitting element and a reflective layer for reflecting light from a semiconductor light-emitting element wherein: the thickness of the metal film is 0.5-3 μm; crystal grains of said Ag forming said metal film have a particle diameter along a surface plane of said metal film of no more than 0.5 μm; said surface of said metal film has a center-line average roughness Ra of no more than 0.1 μm; an adhesion layer and a barrier layer are formed, in sequence, on said substrate, with said metal film being formed on said barrier layer; the thickness of the adhesion layer is 0.01-1.00 μm; and the thickness of the barrier layer is 0.01-1.50 μm.