Patent ID: 8125432

Claim:
A common voltage generation circuit for generating a common voltage applied to a common electrode that faces a pixel electrode specified by a scan line and a data line of an electro-optical device through an electro-optical substance, the common voltage generation circuit comprising: a first operational amplifier that outputs an amplitude voltage of the common voltage based on a first power supply voltage; a second operational amplifier that outputs a high-potential-side voltage of the common voltage based on the first power supply voltage; and a low-potential-side voltage generation circuit that generates a low-potential-side voltage of the common voltage by a charge-pump operation that causes the high-potential-side voltage to be supplied to one end of a flying capacitor, wherein a voltage difference between the first power supply voltage and the amplitude voltage is directly stored in the flying capacitor, the low-potential-side voltage being lower in potential than the high-potential-side voltage for the amplitude voltage, the common voltage generation circuit supplying the high-potential-side voltage or the low-potential-side voltage to the common electrode.