Patent ID: 7671425
Filing Date: 2010-03-02
Classification: H01L

Abstract:
1. A semiconductor device comprising: a semiconductor substrate; a channel region formed in said semiconductor substrate; source and drain regions in said semiconductor substrate wherein said channel region is located between said source and drain regions; at least first and second impurity regions formed in said channel region, wherein said first and second impurity regions are in contact with the source region and are separated from each other; at least third and fourth impurity regions formed in said channel region, wherein said third and fourth impurity regions are in contact with the drain region and are separated from each other; a gate insulating film formed over the channel region; and a gate electrode over the channel region with the gate insulating film interposed therebetween, wherein each of said first, second, third and fourth impurity regions is doped with an impurity of a conductivity type opposite to that of said source and drain regions.