Patent ID: 8125423

Claim:
A voltage control circuit which applies voltage to a pair of electrodes including a first and a second electrode, the circuit comprising: a control unit which switches a direction of voltage applied to the pair of electrodes, in response to an operation mode of said circuit; and a voltage applying unit which applies a first voltage or a second voltage, set lower than the first voltage, to the first and the second electrode, respectively, based on an instruction from said control unit, wherein in a normal mode said voltage applying unit applies fixedly the first voltage to the first electrode, and applies a data voltage of the first voltage or second voltage to the second electrode, and wherein in an inversion mode said voltage applying unit applies fixedly the second voltage to the first electrode, and inverts the data voltage of the first voltage or second voltage and then applies it to the second electrode, wherein said control unit includes an exclusive OR circuit to which a mode control voltage that switches a mode between the normal mode and the inversion mode and a data voltage specifying a voltage to be applied to the pair of electrodes are inputted, wherein said voltage applying unit applies the mode control voltage to the first electrode and applies a voltage outputted from the exclusive-OR circuit to the second electrode.