Semiconductor device and fabrication process thereof

Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Bump leads

Reexamination Certificate

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C257S778000

Reexamination Certificate

active

07429796

ABSTRACT:
A semiconductor device includes a mount substrate and a semiconductor chip mounted upon the mount substrate via a metal bump, wherein metal bump includes an inner part joined to the semiconductor chip and an outer part covering the inner part, the outer part having an increased hardness as compared with the inner part.

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patent: 5906312 (1999-05-01), Zakel et al.
patent: 6030895 (2000-02-01), Joshi et al.
patent: 6043429 (2000-03-01), Blish et al.
patent: 6628178 (2003-09-01), Uchikoba
patent: 6731003 (2004-05-01), Joshi et al.
patent: 2005/0127504 (2005-06-01), Imai
patent: 1622304 (2005-06-01), None
patent: 2001-127102 (2001-05-01), None
patent: 2005-191541 (2005-07-01), None
patent: 2005-54834 (2005-06-01), None

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