发明申请
US20130026212A1 SOLDER DEPOSITION SYSTEM AND METHOD FOR METAL BUMPS 审中-公开
金属沉积物的金属沉积系统和方法

SOLDER DEPOSITION SYSTEM AND METHOD FOR METAL BUMPS
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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