| 摘要 |
Disclosed is a lead frame for use in optical semiconductor devices which has excellent reflection characteristics with respect to visible light and excellent corrosion resistance, and wherein a pure silver layer composed of pure silver is formed on a substrate. The arithmetic mean height Ra of said pure silver layer is 0.001-0.2 µm, and on the surface thereof is formed a film with an average thickness of 0.001-0.2 µm composed of a metal material having excellent corrosion resistance. |
