Semiconductor device with guard ring for preventing water...

Details Semiconductor device with guard ring for preventing water... Semiconductor device with guard ring for preventing water...

2006-11-21

2006-11-21

Pham, Long (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Integrated circuit structure with electrically isolated...

Passive components in ics

C257S758000

Reexamination Certificate

active

07138700

ABSTRACT:
A semiconductor device has a first guard ring surrounding a circuit region, a second ring disposed between the circuit region and the first guard ring, and first connections connecting the first guard ring and the second guard ring to each other. An area sandwiched between the first guard ring and the second guard ring is divided by the first connections into a plurality of subareas. Even if the first guard ring is partly defective, water enters from outside into only the subarea which is contiguous to the defective part of the first guard ring.

REFERENCES:
patent: 2001/0038138 (2001-11-01), Mites et al.
patent: 2003/0160262 (2003-08-01), Kitada et al.
patent: 9-45766 (1997-02-01), None

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