ESD protection structure and method utilizing substrate...

Details ESD protection structure and method utilizing substrate... ESD protection structure and method utilizing substrate...

2006-08-01

2009-08-11

Wojciechowicz, Edward (Department: 2895)

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

Field effect device

Having insulated electrode

C257S360000, C361S056000, C361S011000

Reexamination Certificate

active

07573102

ABSTRACT:
In an ESD protection structure and method utilizing substrate triggering for a high-voltage tolerant pad on a substrate, an ESD protection device has a source connected to the pad and a gate and a drain both connected to a ground, and a substrate-triggering control circuit is used to keep the substrate at a low voltage during a normal operation, and pumping the substrate to a high voltage during an ESD event for the ESD protection device to be triggered much easier. The substrate-triggering control circuit is implemented with an active device, thereby reducing the chip size for the circuit and the loading effect on the pad.

REFERENCES:
patent: 6233130 (2001-05-01), Lin
patent: 6903913 (2005-06-01), Ker et al.
patent: 2004/0212936 (2004-10-01), Salling et al.

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