发明授权
- 专利标题： Lead frame for optical semiconductor devices, method of producing the same, and optical semiconductor device
- 专利标题（中）： 光半导体装置用引线框，其制造方法以及光半导体装置
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申请号： US13168192申请日： 2011-06-24
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公开(公告)号： US08338926B2公开(公告)日： 2012-12-25
- 发明人: Yoshiaki Kobayashi , Kazuhiro Koseki , Shin Kikuchi
- 申请人： Yoshiaki Kobayashi , Kazuhiro Koseki , Shin Kikuchi
- 申请人地址： JP Tokyo
- 专利权人： Furukawa Electric Co., Ltd.
- 当前专利权人： Furukawa Electric Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2008-332732 20081226
- 主分类号： H01L23/495
- IPC分类号： H01L23/495
摘要：
A lead frame for optical semiconductor devices in which a layer 2 composed of silver or a silver alloy is formed on an electrically-conductive substrate 1, having: a surface layer 4 composed of a metal or alloy thereof excellent in corrosion resistance as an outermost layer, wherein a concentration of a metallic component excellent in corrosion resistance of the surface layer is 50% by mass or more at the uppermost portion of the surface layer, and wherein a solid-solution layer 3 of silver and a metallic material which is a main component of the surface layer is formed between the surface layer and the layer composed of silver or a silver alloy.
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