Patent ID: 7535063
Filing Date: 2009-05-19
Classification: H01L

Abstract:
1. An electrostatic discharge (ESD) protection device, wherein the ESD protection device is disposed on a substrate, the ESD protection device further comprises: at least a first conductive type metal-oxide semiconductor (MOS), wherein the drain and source of the first conductive type MOS are electrically connected to a first power terminal and a second power terminal separately; at least a second conductive type diffusion region; and only one first conductive type lightly doped drain (LDD) disposed between the first conductive type MOS and the second conductive type diffusion region, wherein the first conductive type lightly doped drain connects the first conductive type MOS and the second conductive type diffusion region, such that the junction between the second conductive type diffusion region and the drain of the first conductive type MOS have a low breakdown voltage.