To highly efficiently provide multiplex output by outputting a main power source as a data driving voltage and an auxiliary power source as a gate ON voltage and a gate OFF voltage.

A switching operation supplies fluctuation to a current flowing through the primary coil T61 of a transformer, the voltage change of AC is formed from the input voltage Vin of DC, an AC voltage is rectified in a diode D63 and then charged to a capacitor C63 and a static voltage is obtained. In the meantime, the change of a magnetic flux is generated by the change of the current by the switching of a transistor Q61 in the primary coil T61 of the transformer and the change is induced to respective secondary coils T62 and T63 by the induction of electromagneticity. The change forms the flow of the current and the flow of the current is converted to the static voltage by the set of diode capacitors. The voltages of the capacitors C61 and C62 act as the gate ON voltage Von and the gate OFF voltage Voff. Then, for a data driving voltage VDD, the static voltage formed without electromagnetic induction directly from the primary coil T61 of the transformer is used.