| 发明名称 |
DIMENSIONALLY DECOUPLED BALL LIMITING METALURGY |
| 摘要 |
A method for reducing stress on under ball metallurgy (UBM) is disclosed. A collar is disposed around the ball to provide support, and prevent solder interaction in the undercut areas of the UBM. In one embodiment, the collar is comprised of photosensitive polyimide.
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| 申请公布号 |
US2012083114(A1) |
申请公布日期 |
2012.04.05 |
| 申请号 |
US20100897826 |
申请日期 |
2010.10.05 |
| 申请人 |
PERFECTO ERIC DANIEL;COX HARRY DAVID;DAUBENSPECK TIMOTHY HARRISON;QUESTAD DAVID L.;SUNDLOF BRIAN RICHARD;INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
PERFECTO ERIC DANIEL;COX HARRY DAVID;DAUBENSPECK TIMOTHY HARRISON;QUESTAD DAVID L.;SUNDLOF BRIAN RICHARD |
| 分类号 |
H01L21/768 |
主分类号 |
H01L21/768 |
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