Patent ID: 6800902
Filing Date: 2004-10-05
Classification: B41J,H01L

Abstract:
A semiconductor device in which a switching element for allowing a current to flow to a load and a circuit for driving said switching element are formed on a common substrate,wherein said switching element is a first insulated gate transistor which comprises: a first semiconductor region of a second conductive type disposed at one main surface of a semiconductor substrate of a first conductive type; a second semiconductor region of the first conductive type disposed within said first semiconductor region; a first gate electrode disposed on a surface in which a pn junction between said second semiconductor region and said first semiconductor region terminates, through an insulating film; a first source region of the second conductive type which is disposed on one end portion side of said first gate electrode within said second semiconductor region; and a first drain region of the second conductive type which is disposed within said first semiconductor region; and wherein said circuit for driving said switching element comprises a second insulated gate transistor having a characteristic different from that of said first insulated gate transistor.