Patent ID: 6787856
Filing Date: 2004-09-07
Classification: H01L

Abstract:
An electro-static discharge (ESD) protection device comprising:a) a first n+ region and a second n+ region separated by a first isolation region in a substrate; said substrate is pâˆ’ doped; b) a first nâˆ’ well overlapping a portion of said first isolation region and overlapping a portion of said first n+ region; c) a first p+ region adjacent to, but not contacting said second n+ region; d) a second nâˆ’ well overlapping a portion of said first p+ region and all of the second n+ region; said first p+ region contacting said substrate having a p-type doping; said second n+ region abutting the first isolation region; said second nâˆ’ well overlapping a portion of said first isolation region; said second nâˆ’ well between said first p+ region and said second n+ region; e) said first P+ region and said second N+ region connected in parallel to a Vss; and f) silicide regions over the first and second N+ regions and the first p+ region.