Patent ID: 6444510
Filing Date: 2002-09-03
Classification: H01L

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