DISPLAY DEVICE WITH TOUCH SENSOR
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Accused Products
Abstract
A common electrode for a display used both in driving the display and touch detection. An existing common drive signal both as a drive signal for the touch sensor. A capacitance is formed between the common electrode and a touch sensor electrode. Touch detection is performed by utilizing a change of this capacitance caused by a finger touch of a user. The display device with a touch sensor can be used in a mobile device.
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Citations
12 Claims
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1. (canceled)
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2. A display device having a capacitive touch sensor, comprising:
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a first substrate; an second substrate facing the first substrate; a display function layer having an image display function, the display function layer being interposed between the first substrate and the second substrate; a plurality of display pixel electrodes; a common electrode facing the display pixel electrodes, the display pixel electrodes and the common electrode being disposed between the first substrate and the display function layer; a control circuit that performs an image display control by applying a voltage for display between the display pixel electrode and the common electrode, based on an image signal, so that the display function of the display function layer is exhibited; a touch detection electrode for the capacitive touch sensor, the touch detection electrode and the common electrode being arranged such that a capacitance is formed between the common electrode and the touch detection electrode; and a touch detection circuit that detects a position touched by an object based on a detection signal obtained from the touch detection electrode, wherein, a drive voltage that is applied to the common electrode by the control circuit is utilized as a drive signal for the capacitive touch sensor, and the common electrode is divided into a respective plurality of patterns, the respective plurality of patterns of the common electrode and the touch detection electrode being arranged so as to intersect each other. - View Dependent Claims (3, 4, 5, 6)
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7. A display device having a capacitive touch sensor, comprising:
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a first substrate; an second substrate facing the first substrate; a display function layer having an image display function, the display function layer being interposed between the first substrate and the second substrate; a plurality of display pixel electrodes; a common electrode facing the display pixel electrodes, the display pixel electrodes and the common electrode being disposed between the first substrate and the display function layer; a control circuit that performs an image display control by applying a voltage for display between the display pixel electrode and the common electrode, based on an image signal, so that the display function of the display function layer is exhibited; a touch detection electrode disposed opposite to the common electrode, the touch detection electrode and the common electrode being arranged such that a capacitance is formed between the common electrode and the touch detection electrode; and a touch detection circuit that detects a position touched by an object based on a detection signal obtained from the touch detection electrode, wherein, a drive voltage that is applied to the common electrode by the dcontrol circuit is utilized as a drive signal for the capacitive touch sensor, and the touch detection electrode comprises a plurality of individual electrodes, the plurality of individual electrodes being formed in one layer on a same plane. - View Dependent Claims (8, 9)
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10. A display device having a capacitive touch sensor, comprising:
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a first substrate; an second substrate facing the first substrate; a display function layer having an image display function, the display function layer being interposed between the first substrate and the second substrate; a plurality of display pixel electrodes; a common electrode facing the display pixel electrodes, the display pixel electrodes and the common electrode being disposed between the first substrate and the display function layer; a control circuit that controls display of an image by applying a voltage between the display pixel electrode and the common electrode based on an image signal, so that the display function of the display function layer is exhibited; a touch detection electrode, the touch detection electrode overlapping the common electrode, the touch detection electrode and the common electrode being arranged such that a capacitance is formed between the common electrode and the touch detection electrode; and a touch detection circuit that detects a position touched by an object based on a detection signal obtained from the touch detection electrode, wherein, a drive voltage that is applied to the common electrode by the display control circuit is also utilized as a drive signal for the capacitive touch sensor, and the common electrode is divided into a plurality of elongate electrode members. - View Dependent Claims (11, 12)
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Specification