Patent ID: 8722522
Filing Date: 2014-05-13
Classification: H01L

Abstract:
1. A method for manufacturing an electro-static discharge protection device, the method comprising: forming a gate electrode on a substrate; forming a first diffusion region and a second diffusion region in the substrate by injecting impure ions of a first conductivity type using the gate electrode as a mask, the gate electrode being located between the first diffusion region and the second diffusion region; forming a resist pattern to expose at a first local region in a surface of the first diffusion region, the first local region being spaced apart from a first sidewall insulation film formed on a side surface of the gate electrode; forming a third diffusion region under the first diffusion region in the substrate by injecting impure ions of a second conductivity type that differ from the first conductivity type using the resist pattern as a mask; forming an insulation film so as to expose a second local region in the surface of the first diffusion region, the second local region being located above the third region and wider than the first local region; and forming a silicide layer in the exposed second local region of the first diffusion region using the insulation film as a mask.