Patent ID: 8008725

Claim:
A field transistor having a current path between a source and a drain while containing no thin gate insulating layer, the transistor comprising: a well region of a first conductivity type; a field oxide layer for defining an active region on the well region; high concentration source and drain regions of a second conductivity type separated from each other by a width of the field oxide layer; a low concentration source region of the second conductivity type formed in the well region, the low concentration source region being adjacent to the high concentration source region and overlapped by one end of the field oxide layer; a low concentration drain region of the second conductivity type formed in the well region, the low concentration drain region being adjacent to the high concentration drain region and overlapped by the other end of the field oxide layer; and a gate conductive layer pattern formed on the field oxide layer, the gate conductive layer pattern overlapping parts of the low concentration source and drain regions of the second conductivity type.