| 摘要 |
This substrate (1) for light emitting elements is provided with: a first layer (11) that is formed of Cu, Ag, Al, an Cu alloy, an Ag alloy or an Al alloy and a second layer (12) that is formed of Fe or an Fe alloy, said layers being arranged on one surface (1a), on which a light emitting element (2) is arranged; and a third layer (13) that is formed of Cu, Ag, Al, an Cu alloy, an Ag alloy or an Al alloy and arranged on the other surface (1b). The surface (1a) is formed to have a kurtosis (Rku) of 10.5 or less and an arithmetic mean roughness (Ra) of 0.15 mum or less. |
