Driver circuit of display device
AssigneeNEC Electronics Corporation
InventorMasashi Gotou
Life of this patent
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Abstract
A driver circuit of a display device according to an embodiment of the invention includes: 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 supplying the driving voltage to 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.
Claims10
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 supplying the driving voltage to 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.
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 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.
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.
Dependencies are inferred from the claim text.