Patent ID: 9704849
Date: 2017-07-11
CPC Classifications: H01L

Claim:
1. An electrostatic discharge, ESD, protection device structure comprising a substrate having a first part, a first type well formed within the first part of the substrate, a second type well formed within the first part of the substrate, a doped part of a second type formed in an upper region of the second type well a second type doped region formed within an upper region of the first type well, a first type doped region formed partly in an upper region of the first type well and partly in the doped part and separated from the second type doped region by a first nitride spacer, wherein the second type well, the first type doped region and the second type doped region constitute a first transistor and wherein the first type doped region and the doped part constitute a trigger diode, and a further first type doped region formed in an upper region of the doped part and separated from the first type doped region by a second nitride spacer, wherein the further, first type doped region, the doped part and the first type doped region constitute a second transistor.