Patent ID: 7368761

Claim:
An electrostatic discharge (ESD) protection device, comprising: a substrate; an N type well, disposed in the substrate; a P type doped region, disposed in the N type well; a first N+ type doped region, disposed in the P type doped region; a first P+ type doped region, disposed in the P type doped region; a second P+ type doped region, disposed in the N type well and outside the P type doped region, wherein the second P+ type doped region and the P type doped region are not in contact with each other; a gate, disposed on the N type well and between the second P+ type doped region and the P type doped region; a first electrode, connected to the first N+ type doped region and the first P+ type doped region through a first electrical conductor; and a second electrode, connected to the second P+ type doped region, and the gate through a second electrical conductor.