ESD protection device with high voltage and negative voltage...

Details ESD protection device with high voltage and negative voltage... ESD protection device with high voltage and negative voltage...

2006-05-23

2006-05-23

Huynh, Andy (Department: 2818)

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

Field effect device

Having insulated electrode

C257S173000, C257S361000, C257S487000, C257S490000, C257S494000, C257S495000, C257S546000

Reexamination Certificate

active

07049663

ABSTRACT:
An electrostatic discharge protection device with high voltage and negative voltage tolerance is provided. The electrostatic discharge protection device comprises: a first type substrate; a first type well inside the first type substrate, the first type well being floating; a second type well inside the first type substrate, the second type well separating the first type well from the first type substrate, the second type well being coupled to a first voltage line; a second type first doped region inside the first type well and coupled to a second voltage line; a second type second doped region inside the first type well and coupled to the pad; and an isolation structure between the second type first doped region and the second type second doped region.

REFERENCES:
patent: 6501137 (2002-12-01), Yu et al.
patent: 2005/0133870 (2005-06-01), Manna et al.

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