Patent ID: 7768078
Filing Date: 2010-08-03
Classification: H01L,Y10S

Abstract:
1. A semiconductor device, comprising: a semiconductor substrate; a semiconductor layer of a first conductivity type formed over the semiconductor substrate and having a major surface; a body region of a second conductivity type disposed in the semiconductor layer for forming a channel of the semiconductor device; a current conducting region of the first conductivity type formed in the body region; a gate structure formed adjacent the channel; a first doped region of the second conductivity type formed in the semiconductor layer in proximity to a drain edge of the channel to enhance breakdown voltage of the semiconductor device when in operation, wherein the first doped region is spaced apart from the body region so that a portion of the semiconductor layer is between the body region and the first doped region in proximity to the major surface; a first conductive layer coupled to the first doped region; a second doped region of the first conductivity type formed between the body region and the first doped region, wherein the second doped region has a higher dopant concentration than the semiconductor layer.