Patent ID: 7528813

Claim:
A driving circuit for driving a display portion comprising: pixel electrodes disposed in a matrix arrangement so as to display images; a common electrode provided in opposition to the pixel electrodes so that liquid crystal capacitances serving as first predetermined capacitances are formed; auxiliary capacitance electrodes provided on the same substrate as the pixel electrodes so that auxiliary capacitances serving as second predetermined capacitances are formed; an auxiliary capacitance electrode driving signal line for transmitting an auxiliary capacitance electrode driving signal for driving the auxiliary capacitance electrodes; and the driving circuit comprising an auxiliary capacitance potential setting circuit for setting an upper limit of the potential of the auxiliary capacitance electrode driving signal to ground potential; wherein the common electrode is set alternately to one of high potential and low potential at every predetermined period; wherein the auxiliary capacitance electrode is set alternately to one of high potential and low potential at the same timing when the common electrode is set alternately to the high potential and the low potential.