发明申请
- 专利标题: SOLDER DEPOSITION SYSTEM AND METHOD FOR METAL BUMPS
- 专利标题(中): 金属沉积物的金属沉积系统和方法
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申请号: US13543576申请日: 2012-07-06
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公开(公告)号: US20130026212A1公开(公告)日: 2013-01-31
- 发明人: Samuel Waising Tam , Bryan Sik Pong Lee , Tak Shing Pang
- 申请人: Samuel Waising Tam , Bryan Sik Pong Lee , Tak Shing Pang
- 申请人地址: US CO Broomfield
- 专利权人: FLEXTRONICS AP, LLC
- 当前专利权人: FLEXTRONICS AP, LLC
- 当前专利权人地址: US CO Broomfield
- 主分类号: H05K13/04
- IPC分类号: H05K13/04
摘要:
A manufacturing technique includes creating stud bumps on the electrical contacts on a die, either in wafer or die form. A separate stencil or carrier is provided with cavities that correspond to the electrical contacts on the die. The cavities are filled with solder paste and the die is brought into close proximity with the stencil so that the stud bumps extend into the cavities and come into contact with the solder paste. When the die is removed, the solder paste stays affixed to the stud bumps and thereby the solder paste is transferred and delivered to the stud bumps. The die can then be affixed to a substrate such as a PCB.
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