Patent ID: 6693328
Filing Date: 2004-02-17
Classification: H01L,Y10S

Abstract:
A semiconductor device comprising:a semiconductor substrate; an insulating film provided on the semiconductor substrate; a semiconductor layer provided on the insulating film; an element separating insulating film provided in the semiconductor layer to separate an element area; a first gate insulating film provided on the semiconductor layer in the element area; a gate electrode provided on the first gate insulating film; source/drain diffusion layers formed in the semiconductor layer so as to sandwich a channel area under the gate electrode therebetween; and a potential applying section inducing a leak current, the leak current controlling the potential of the semiconductor layer, the potential applying section comprising a second gate insulating film provided on the semiconductor layer in the element area and a conductive film provided on the second gate insulating film and connected to the gate electrode, the potential applying section configured so that a leak current flowing through the second gate insulating film is larger than a leak current flowing through the first gate insulating film.