发明名称 |
Method for forming a solder bump by solder-jetting or the like |
摘要 |
The present invention provides a method for forming a solder bump (24) on a substrate (20). The substrate (20) includes a bond pad (18) having a faying surface (19) composed of solder-wettable metal. The method includes coating the faying surface (19) with a plate (16) formed of a first metal having a first melting temperature, and projecting a discrete microdroplet (14) onto the plate (16). The microdroplet (14) is formed of a molten second metal and has a second melting temperature greater than the first melting temperature. The microdroplet (14) fuses to the plate (16) to form the solder bump (24).
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申请公布号 |
US5597110(A) |
申请公布日期 |
1997.01.28 |
申请号 |
US19950519439 |
申请日期 |
1995.08.25 |
申请人 |
MOTOROLA, INC. |
发明人 |
MELTON, CYNTHIA M.;PFAHL, ROBERT |
分类号 |
B23K1/20;H01L21/48;H05K3/34;(IPC1-7):B23K1/20;B23K1/00 |
主分类号 |
B23K1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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