Patent ID: 8466019
Filing Date: 2013-06-18
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate; an epitaxial layer on the substrate, wherein the epitaxial layer is the same conductive type as the substrate; a first doped region in the epitaxial layer, wherein the first doped region is a different conductive type from that of the epitaxial layer; a second doped region and an adjacent third dope region respectively in the first doped region, wherein the second doped region, which directly contacts both the first and third doped regions, has a different conductive type from the first doped region, and the third doped region, which directly contacts both the first and second doped regions, has the same conductive type as the first doped region, and wherein the second doped region and the third doped region are a drain region and a source region, respectively; and a gate structure on the epitaxial layer, covering a portion of the second and the third doped regions.