Display device with touch sensor, potential control method and program
First Claim
1. A display device with a touch sensor comprising:
- a plurality of display pixel electrodes;
a common electrode arranged opposite to the display pixel electrodes;
a display function layer having an image display function; and
a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal,wherein a drive voltage for display applied to the common electrode by the control circuit is used as a drive signal for the touch sensor,wherein a signal supplied to gates of TFT circuits included in the display pixel electrodes is one of a pulse wave signal and a signal in which different three potentials are switched at given timings, andthe three potentials includes a first potential during the TFT circuits being off, a second potential for turning on the TFT circuits, and a third potential at the time of supplying the drive signal for the touch sensor.
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Accused Products
Abstract
A display device with a touch sensor includes: plural display pixel electrodes; a common electrode arranged opposite to the display pixel electrodes; a display function layer having an image display function; a display control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal; and a touch detection electrode provided opposite to the common electrode and forming capacitance between the touch detection electrode and the common electrode, wherein a drive voltage for display applied to the common electrode by the display control circuit is used as a drive signal for the touch sensor, and a gate potential of TFT circuits included in the display pixel electrodes is increased during a period when the drive signal for the touch sensor is applied.
9 Citations
10 Claims
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1. A display device with a touch sensor comprising:
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a plurality of display pixel electrodes; a common electrode arranged opposite to the display pixel electrodes; a display function layer having an image display function; and a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal, wherein a drive voltage for display applied to the common electrode by the control circuit is used as a drive signal for the touch sensor, wherein a signal supplied to gates of TFT circuits included in the display pixel electrodes is one of a pulse wave signal and a signal in which different three potentials are switched at given timings, and the three potentials includes a first potential during the TFT circuits being off, a second potential for turning on the TFT circuits, and a third potential at the time of supplying the drive signal for the touch sensor. - View Dependent Claims (2, 3, 4)
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5. A potential control method of a display device with a touch sensor including
a plurality of display pixel electrodes, a common electrode arranged opposite to the display pixel electrodes, a display function layer having an image display function, and a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal, the method comprising: -
using a drive voltage for display applied to the common electrode by the control circuit as a drive signal for the touch sensor; allowing a signal supplied to gates of TFT circuits included in the display pixel electrodes to be one of a pulse wave signal and a signal in which different three potentials are switched at given timings, and wherein the three potentials includes a first potential during the TFT circuits being off, a second potential for turning on the TFT circuits, and a third potential at the time of supplying the drive signal for the touch sensor.
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6. A display device with a touch sensor comprising:
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a plurality of display pixel electrodes; a common electrode arranged opposite to the display pixel electrodes; a display function layer having an image display function; and a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal, wherein the control unit supplies to the common electrode with a drive voltage for display in a display period, and supplies to the common electrode with a drive voltage for touch detection in a touch detection period, the drive voltage for touch detection is a pulse wave pattern, and a gate potential of TFT circuits included in the display pixel electrodes is increased during the touch detection period. - View Dependent Claims (7, 8)
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9. A potential control method of a display device with a touch sensor including
a plurality of display pixel electrodes, a common electrode arranged opposite to the display pixel electrodes, a display function layer having an image display function, and a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal, the method comprising: -
using a drive voltage for display applied to the common electrode by the control circuit in a display period, using the drive voltage applied to the common electrode as a drive signal for touch detection in a touch detection period, and increasing a gate potential of TFT circuits included in the display pixel electrodes during the touch detection period when the drive voltage in a pulse wave for touch detection is applied.
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10. A display device with a touch sensor comprising:
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a plurality of display pixel electrodes; a common electrode arranged opposite to the display pixel electrodes; a display function layer having an image display function; and a control circuit performing image display control so as to fulfill the display function of the display function layer by applying a voltage for display between the display pixel electrodes and the common electrode based on an image signal, wherein the control unit applies to the common electrode with a drive voltage for display in a display period, and supplies to the common electrode with a drive signal for touch detection in a touch detection period, the drive signal for the touch detection is a pulse wave pattern, and a gate potential of TFT circuits included in the display pixel electrodes is shifted to a high level and a low level that synchronized with the drive signal for touch sensor in the touch detection period.
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Specification