Display device with touch sensor, potential control method and program
First Claim
1. A display device with a touch sensor comprising:
- 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,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, andwherein the three potentials include 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.
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Citations
12 Claims
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1. A display device with a touch sensor comprising:
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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, 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 wherein the three potentials include 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
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, the method comprising: -
using a drive voltage for display applied to the common electrode by the display control circuit as a drive signal for the touch sensor; and 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 include 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 non-transitory computer program product stored on a computer readable medium that when executed by a processor performs steps for controlling a display device with a touch sensor including
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, the steps including: -
using a drive voltage for display applied to the common electrode by the display control circuit as a drive signal for the touch sensor, and 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 include 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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7. A display device with a touch sensor comprising:
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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 is applied to the common electrode for display in a display period by the display control circuit and is used as a drive signal for the touch sensor in a touch detection period, the display period is different from the touch detection period in which the drive signal for the touch sensor in a pulse wave pattern is applied, and a gate potential of TFT circuits included in the display pixel electrodes is increased during the touch detection period. - View Dependent Claims (8, 9, 10)
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11. A potential control method of a display device with a touch sensor including
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, the method comprising: -
using a drive voltage for display applied to the common electrode by the display control circuit in a display period, using the drive voltage applied to the common electrode as a drive signal for the touch sensor 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 signal in a pulse wave for the touch sensor is applied, wherein the display period is different from the touch detection period.
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12. A non-transitory computer program product stored on a computer readable medium that when executed by a processor performs steps for controlling a display device with a touch sensor including
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, the steps including: -
using a drive voltage for display applied to the common electrode by the display control circuit in a display period, and using the drive voltage applied to the common electrode as a drive signal for the touch sensor 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 signal in a pulse wave for the touch sensor is applied, wherein the display period is different from the touch detection period.
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Specification