Patent ID: 8988132
Filing Date: 2015-03-24
Classification: H01L,H02M,Y02B

Abstract:
1. A semiconductor device comprising: an insulated gate type switching element and a semiconductor circuit; and a control signal for on/off control of the switching element propagating in the semiconductor circuit, the switching element and the semiconductor circuit being provided on a substrate, the semiconductor circuit comprising a semiconductor element or a plurality of semiconductor elements, the semiconductor element and the plurality of semiconductor elements containing a semiconductor with a larger bandgap than silicon, and the semiconductor element and the plurality of semiconductor elements being configured so that resistance upon propagation of the control signal can be varied to a large/small value, wherein the semiconductor element is an FET of an N-channel type (or a P-channel type), wherein resistance of a channel of the semiconductor element varies to a large/small value according to a low/high level (or a high/low level) of voltage of a gate electrode with reference to a potential of a drain electrode or a source electrode, wherein one of the source electrode and the drain electrode of the semiconductor element receives a drive signal, the drive signal having a high level and a low level, and wherein the other of the source electrode and the drain electrode of the semiconductor element is connected to a gate electrode of the switching element, wherein a divided voltage of the drive signal is applied to the gate electrode of the semiconductor element.