发明名称 |
Apparatus for connecting a semiconductor die to a substrate and method therefor |
摘要 |
A pad area of a substrate (50) includes a conductive trace (52) formed on the substrate (50) having a first surface area, the first surface area being of a first solderability. A conductive pad (56) is formed on the first surface area of the conductive trace (52). The conductive pad (56) has a second surface area, the second surface area being of a second solderability. The second solderability is greater than the first solderability. Because of the different solderabilities, a solder bump (46) on the semiconductor die (40) can be reflowed and connected to the second surface area without using a soldermask (28) to contain the melted solder on the second surface area.
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申请公布号 |
US2002079595(A1) |
申请公布日期 |
2002.06.27 |
申请号 |
US20000746976 |
申请日期 |
2000.12.21 |
申请人 |
CARPENTER BURTON J.;VO NHAT D.;CLARK CHRISTOPHER T.;STONE WILLLIAM M.;UEHLING TRENT S.;CLEGG DAVID B. |
发明人 |
CARPENTER BURTON J.;VO NHAT D.;CLARK CHRISTOPHER T.;STONE WILLLIAM M.;UEHLING TRENT S.;CLEGG DAVID B. |
分类号 |
H01L21/60;H01L23/498;H05K3/24;H05K3/34;(IPC1-7):H01L23/48;H01L23/52;H01L29/40 |
主分类号 |
H01L21/60 |
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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