T-shaped post for semiconductor devices
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United States of America Patent
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Oct 30, 2012
Grant Date -
Aug 4, 2011
app pub date -
Jan 29, 2010
filing date -
Jan 29, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A T-shaped post for semiconductor devices is provided. The T-shaped post has an under-bump metallization (UBM) section and a pillar section extending from the UBM section. The UBM section and the pillar section may be formed of a same material or different materials. In an embodiment, a substrate, such as a die, wafer, printed circuit board, packaging substrate, or the like, having T-shaped posts is attached to a contact of another substrate, such as a die, wafer, printed circuit board, packaging substrate, or the like. The T-shaped posts may have a solder material pre-formed on the pillar section such that the pillar section is exposed or such that the pillar section is covered by the solder material. In another embodiment, the T-shaped posts may be formed on one substrate and the solder material formed on the other substrate.
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