Patent ID: 8362554
Filing Date: 2013-01-29
Classification: H01L

Abstract:
1. A semiconductor device comprising: a pair of drain regions of a first conductivity type; a source region provided between the pair of drain regions, the source region being spaced apart from each of the drain regions; a pair of channel regions of a second conductivity type, one of the channel regions being provided between one of the drain regions and the source region, and another of the channel regions being provided between another of the drain regions and the source region; an insulating film provided on each of the channel regions; a gate electrode provided on the insulating film; a pair of first semiconductor regions of the first conductivity type having a lower first conductivity type impurity concentration than the drain regions, one of the first semiconductor regions being provided between said one of the drain regions and said one of the channel regions, and another of the first semiconductor regions being provided between said another of the drain regions and said another of the channel regions; and a pair of second semiconductor regions of the first conductivity type having a lower first conductivity type impurity concentration than the drain regions, one of the second semiconductor regions being provided between said one of the channel regions and the source region, another of the second semiconductor regions being provided between said another of the channel regions and the source region, and each of the second semiconductor regions extending in a channel width direction, the source region extending in the channel width direction between the pair of second semiconductor regions, and including: