发明名称 |
Solder bumps in flip-chip technologies |
摘要 |
A solder bump structure and method for forming the same. The structure includes (a) a dielectric layer including a dielectric layer top surface (b) an electrically conducting bond pad on and in direct physical contact with the dielectric layer top surface; (c) a patterned support/interface layer on the dielectric layer top surface and thicker than the electrically conducting bond pad in the reference direction, wherein the patterned support/interface layer comprises a hole and a trench, wherein the hole is directly above the electrically conducting bond pad, and wherein the trench is not filled by any electrically conducting material; and (d) an electrically conducting solder bump filling the hole and electrically coupled to the electrically conducting bond pad. |
申请公布号 |
US7329951(B2) |
申请公布日期 |
2008.02.12 |
申请号 |
US20050908083 |
申请日期 |
2005.04.27 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
DAUBENSPECK TIMOTHY H.;GAMBINO JEFFREY P.;MUZZY CHRISTOPHER D.;SAUTER WOLFGANG |
分类号 |
H01L23/48;H01L23/52;H01L29/40 |
主分类号 |
H01L23/48 |
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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