Driver circuit of display device

1. A driver circuit of a display device, comprising:

a dot-inversion switch selectively supplying a driving voltage generated with an operational amplifier to a first pixel electrode or a second pixel electrode, the dot-inversion switch including:

an operational amplifier-side switch and a pixel-side switch series connected together supplying the driving voltage to either the first pixel electrode or the second pixel electrode; and

a common short-circuit switch connected to a node between the operational amplifier-side switch and the pixel-side switch to supply an intermediate potential to the node.

2. The driver circuit of a display device according to claim 1 , wherein the dot-inversion switch includes:

a first operational amplifier-side switch and a first pixel-side switch supplying the driving voltage to the first pixel electrode;

a first common short-circuit switch connected to a first node between the first operational amplifier-side switch and the first pixel-side switch to supply an intermediate potential to the first node;

a second operational amplifier-side switch and a second pixel-side switch supplying the driving voltage to the second pixel electrode; and

a second common short-circuit switch connected to a second node between the second operational amplifier-side switch and the second pixel-side switch to supply an intermediate potential to the second node.

3. The driver circuit of a display device according to claim 1 , further comprising:

a charge recovery capacitor recovering charges accumulated to the first pixel electrode or the second pixel electrode; and

a charge recovery switch connecting the first pixel electrode or the second pixel electrode to the charge recovery capacitor.

4. The driver circuit of a display device according to claim 2 , further comprising:

a charge recovery capacitor recovering charges accumulated to the first pixel electrode or the second pixel electrode; and

a charge recovery switch connecting the first pixel electrode or the second pixel electrode to the charge recovery capacitor.

5. A driver circuit of a display device, comprising:

a positive-polarity operational amplifier generating a driving voltage of a positive polarity relative to an intermediate potential;

a negative-polarity operational amplifier generating a driving voltage of a negative polarity relative to the intermediate potential; and

a dot-inversion switch selectively supplying an output voltage from the positive-polarity operational amplifier or the negative-polarity operational amplifier to a first pixel electrode or a second pixel electrode, the dot-inversion switch including:

an operational amplifier-side switch and a pixel-side switch series-connected between an output of the positive-polarity operational amplifier or the negative-polarity operational amplifier and together supplying either the driving voltage of a positive polarity or the driving voltage of a negative polarity to either the first pixel electrode or the second pixel electrode; and

a common short-circuit switch supplying an intermediate potential to a node between the operational amplifier-side switch and the pixel-side switch.

6. The driver circuit of a display device according to claim 5 , further comprising:

a charge recovery capacitor recovering charges accumulated to the first pixel electrode or the second pixel electrode; and

a charge recovery switch connecting between the first pixel electrode or the second pixel electrode and the charge recovery capacitor.

7. A driver circuit of a display device, comprising:

a positive-polarity operational amplifier generating a driving voltage of a positive polarity relative to an intermediate potential;

a negative-polarity operational amplifier generating a driving voltage of a negative polarity relative to the intermediate potential;

a first switch group connecting an output of the positive-polarity operational amplifier to a first pixel electrode;

a second switch group connecting an output of the positive-polarity operational amplifier to a second pixel electrode;

a third switch group connecting an output of the negative-polarity operational amplifier to the first pixel electrode; and

a fourth switch group connecting an output of the negative-polarity operational amplifier to the second pixel electrode, the first switch group, the second switch group, the third switch group, and the fourth switch group each including:

an operational amplifier-side switch and a pixel-side switch series-connected between the output of the positive-polarity operational amplifier or the negative-polarity operational amplifier and the first pixel electrode or the second pixel electrode; and

a common short-circuit switch supplying an intermediate potential to a node between the operational amplifier-side switch and the pixel-side switch.

8. The driver circuit of a display device according to claim 7 , wherein the pixel-side switch is composed of a MOS transistor, and a voltage applied to a substrate terminal of the MOS transistor varies depending on how the output of the positive-polarity operational amplifier or the negative-polarity operational amplifier is connected with the first pixel electrode or the second pixel electrode.

9. The driver circuit of a display device according to claim 7 , further comprising:

a charge recovery capacitor recovering charges accumulated to the first pixel electrode or the second pixel electrode; and

a charge recovery switch connecting between the first pixel electrode or the second pixel electrode and the charge recovery capacitor.

10. The driver circuit of a display device according to claim 8 , further comprising:

a charge recovery capacitor recovering charges accumulated to the first pixel electrode or the second pixel electrode; and

a charge recovery switch connecting between the first pixel electrode or the second pixel electrode and the charge recovery capacitor.