Patent ID: 6777756
Filing Date: 2004-08-17
Classification: H01L

Abstract:
A semiconductor device including at least one MISFET structure, said MISFET structure comprising:an element isolation region formed on a surface portion of a semiconductor substrate to have a closed region; an element region formed on the surface region of the semiconductor substrate to surround said element isolation region; a gate insulating film formed to cover at least a surface of said element region; a contact region formed on said element isolation region; and at least four gate electrodes connected to said contact region and formed on the surface of said element region via said gate insulating film to extend to at least outside said element region, wherein in said element region, regions partitioned by said gate electrodes are alternately allocated to source regions and drain regions, and an area of at least one of said drain regions is different from that of at least one of said source regions.