发明授权
US06977349B2 Method for manufacturing wiring circuit boards with bumps and method for forming bumps
失效
用于制造具有凸块的布线电路板的方法和用于形成凸块的方法
- 专利标题: Method for manufacturing wiring circuit boards with bumps and method for forming bumps
- 专利标题(中): 用于制造具有凸块的布线电路板的方法和用于形成凸块的方法
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申请号: US10403024申请日: 2003-04-01
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公开(公告)号: US06977349B2公开(公告)日: 2005-12-20
- 发明人: Yutaka Kaneda , Keiichi Naito , Toshihiro Shinohara
- 申请人: Yutaka Kaneda , Keiichi Naito , Toshihiro Shinohara
- 申请人地址: JP Tokyo JP Tokyo
- 专利权人: Sony Corporation,Sony Chemicals Corp.
- 当前专利权人: Sony Corporation,Sony Chemicals Corp.
- 当前专利权人地址: JP Tokyo JP Tokyo
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP11-319669 19991110
- 主分类号: H05K3/34
- IPC分类号: H05K3/34 ; H05K3/06 ; H05K3/20 ; H05K3/40 ; H05K3/46 ; H01K1/00
摘要:
Wiring circuit boards with bumps can be manufactured such that stable bump connections are possible and plating pre-treatments or other difficult operations are rendered unnecessary. By utilizing a technique whereby a bump-formation etching mask 7 is formed on a bump-forming surface 3a of a metal foil 3 which has a thickness that is the sum of the thickness t1 of the wiring circuit 1 and the height t2 of the bumps 2 which are to be formed on the wiring circuit 1 (t1+t2), and then the bumps 2 are formed by half-etching the metal foil 3 to a depth corresponding to the desired bump height t2 from the bump-formation etching mask 7 side, wiring circuit boards with bumps can be manufactured such that stable bump connections are possible and plating pre-treatments or other complex processes are rendered unnecessary.
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