Semiconductor device and fabrication method thereof

Active solid-state devices (e.g. – transistors – solid-state diode – Combined with electrical contact or lead – Ball or nail head type contact – lead – or bond

Reexamination Certificate

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C257S774000, C257S698000

Reexamination Certificate

active

07365440

ABSTRACT:
A semiconductor device includes a second insulating film formed on a second surface of a semiconductor substrate whose first surface has been formed with a first insulating film and an electrode pad, and an opening is made in a portion of the second insulating film directly below the electrode pad. By using the second insulating film as a mask, a through hole is formed in the semiconductor substrate in such a manner that the through hole recedes from an opening edge of the first insulating film. A third insulating film is formed only on the inner wall of the through hole.

REFERENCES:
patent: 6791195 (2004-09-01), Urushima
patent: 2003/0080408 (2003-05-01), Farnworth et al.
patent: 2003/0151144 (2003-08-01), Muta et al.
patent: 2003/0190799 (2003-10-01), Kung et al.
patent: 2004/0063268 (2004-04-01), Noma et al.
patent: 2004/0124513 (2004-07-01), Ho et al.
patent: 3186941 (2001-05-01), None
patent: 2003-309221 (2003-10-01), None
patent: 530344 (2003-05-01), None
patent: 552694 (2003-09-01), None

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