Patent ID: 9666576
Date: 2017-05-30
CPC Classifications: H01L

Claim:
1. An electrostatic discharge protection (ESD) device, comprising: a semiconductor substrate; a pair of first well regions formed in the semiconductor substrate, wherein the pair of first well regions have a first conductivity type and are separated by at least one portion of the semiconductor substrate, which is adjacent to, extends between, and is in direct contact with, opposing lateral sides of the first well regions; a first doping region formed in a portion of at least one portion of the semiconductor substrate separating the pair of first well regions, having a second conductivity type opposite to the first conductivity type; a pair of second doping regions, each one of the second doping regions respectively formed in one of the pair of first well regions, having the first conductivity type; a pair of insulating layers, each one of the insulating layer respectively formed over a portion of the semiconductor substrate to cover a portion of the first doped region and one of the pair of second doping regions; and isolation structures formed on opposing outer sides of the pair of first well regions, the isolation structures surrounding the pair of first well regions, the first doping region, and the pair of second doping regions.