High voltage operating electrostatic discharge protection...

Details High voltage operating electrostatic discharge protection... High voltage operating electrostatic discharge protection...

2005-09-07

2008-11-11

Warren, Matthew E (Department: 2815)

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

Field effect device

Having insulated electrode

C257S356000, C257S357000, C257S360000, C257S546000, C257SE29014

Reexamination Certificate

active

07449751

ABSTRACT:
A high voltage operating electrostatic discharge protection device is provided. The high voltage operating electrostatic discharge protection device includes: a first gate structure and a second gate structure disposed on a substrate of a first conductive type with a predetermined distance; a well of the first conductive type formed in a first region of the substrate such that the well contacts one bottom portion of the first gate structure; a source region of a second conductive type formed within in the well; a counter pocket source region of the first conductive type formed within the well encompassing the source region; and a drift region of the second conductive type contacting a bottom surface of the second gate structure and formed in a second region of the substrate such that the drift region contacts the other bottom portion of the first gate structure.

REFERENCES:
patent: 2002/0056877 (2002-05-01), Liu et al.

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