Touch display and method for driving a plurality of touch driving electrodes of touch display
First Claim
1. A display, comprising:
- a pixel electrode;
a common electrode, comprising a plurality of sub electrodes coupled with a DC potential to form a shielding region, wherein a plurality of touch driving electrodes of a touch device are integrated into the common electrode; and
a liquid crystal layer, placed between the pixel electrode and the common electrode and driven by the pixel electrode and the common electrode, wherein the pixel electrode is integrated into a TFT (thin film transistor) layer, and the plurality of touch driving electrodes are configured horizontally and parallels a plurality of horizontal pixel lines updated by the TFT layer, wherein the driving direction of the plurality of touch driving electrodes is opposite to the updating direction of the TFT layer, wherein when at least one touch driving electrode which be driven will influence the horizontal pixel line updated by the TFT layer, driving signals of the at least one touch driving electrode is suspended until the horizontal pixel line updated by the TFT layer leaves the effect range of the at least one touch driving electrode.
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Abstract
A touch display provided by the present invention includes a control unit and a display. The control unit outputs driving signals to a plurality of touch driving electrodes and receives sensing signals from a plurality of touch sensing electrodes so as to detect touch or proximity of at least one external object based on the capacitive coupling between the driving and sensing electrodes. The display includes a liquid crystal layer, a pixel electrode and a common electrode, wherein the liquid crystal layer is driven by the pixel electrode and the common electrode. The common electrode includes the touch driving electrodes, and the common electrode except the touch driving electrodes are electrically coupled to a DC potential to form a shielded region.
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Citations
20 Claims
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1. A display, comprising:
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a pixel electrode; a common electrode, comprising a plurality of sub electrodes coupled with a DC potential to form a shielding region, wherein a plurality of touch driving electrodes of a touch device are integrated into the common electrode; and a liquid crystal layer, placed between the pixel electrode and the common electrode and driven by the pixel electrode and the common electrode, wherein the pixel electrode is integrated into a TFT (thin film transistor) layer, and the plurality of touch driving electrodes are configured horizontally and parallels a plurality of horizontal pixel lines updated by the TFT layer, wherein the driving direction of the plurality of touch driving electrodes is opposite to the updating direction of the TFT layer, wherein when at least one touch driving electrode which be driven will influence the horizontal pixel line updated by the TFT layer, driving signals of the at least one touch driving electrode is suspended until the horizontal pixel line updated by the TFT layer leaves the effect range of the at least one touch driving electrode. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A touch device, comprising:
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a plurality of touch driving electrodes, integrated into a common electrode of a liquid crystal layer, wherein the common electrode comprises a plurality of sub electrodes coupled with a DC potential to form a shielding region; a plurality of touch sensing electrodes; and a control unit, detecting capacitive coupling between the plurality of touch driving electrodes and the plurality of touch sensing electrodes so as to execute operations of at least one external object, wherein the plurality of touch driving electrodes are configured horizontally and parallels a plurality of horizontal pixel lines updated by a TFT (thin film transistor) layer, wherein the driving direction of the plurality of touch driving electrodes is opposite to the updating direction of the TFT layer, wherein when at least one touch driving electrode which be driven will influence the horizontal pixel line updated by the TFT layer, driving signals of the at least one touch driving electrode is suspended until the horizontal pixel line updated by the TFT layer leaves the effect range of the at least one touch driving electrode, wherein the TFT layer comprises a pixel electrode, and the pixel electrode and the common electrode drive the liquid crystal layer. - View Dependent Claims (8, 9, 10, 11)
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12. A touch display, comprising:
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a control unit, providing driving signals to a plurality of touch driving electrodes and receiving sensing signals from a plurality of touch sensing electrodes so as to detect touch or proximity of at least one external object based on capacitive coupling between the plurality of touch driving electrodes and the plurality of touch sensing electrodes; and a display, comprising a liquid crystal layer; and
a pixel electrode and a common electrode which both drive the liquid crystal layer, wherein the common electrode comprises a plurality of sub electrodes coupled with a DC potential to form a shielding region, wherein the plurality of touch driving electrodes are integrated into the common electrode, wherein the pixel electrode is integrated into a TFT (thin film transistor) layer, and the plurality of touch driving electrodes are configured horizontally and parallels a plurality of horizontal pixel lines updated by the TFT layer, wherein the driving direction of the plurality of touch driving electrodes is opposite to the updating direction of the TFT layer, wherein when at least one touch driving electrode which be driven will influence the horizontal pixel line updated by the TFT layer, driving signals of the at least one touch driving electrode is suspended until the horizontal pixel line updated by the TFT layer leaves the effect range of the at least one touch driving electrode. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A common electrode, integrated into a display, and the common electrode and a pixel electrode both drive a liquid crystal layer, wherein the common electrode comprises:
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a plurality of sub electrodes, coupled with a DC potential to form a shielding region, wherein a plurality of touch driving electrodes of a touch device are integrated into the common electrode; wherein the plurality of touch driving electrodes are provided with driving signals, and sensing signals are received from a plurality of touch sensing electrodes such that touch or proximity of at least one external object is detected based on the capacitive coupling between the plurality of touch driving electrodes and the plurality of touch sensing electrodes; wherein the pixel electrode is integrated into a TFT (thin film transistor) layer, and the plurality of touch driving electrodes are configured horizontally and parallels a plurality of horizontal pixel lines updated by the TFT layer, wherein the driving direction of the plurality of touch driving electrodes is opposite to the updating direction of the TFT layer, wherein when at least one touch driving electrode which be driven will influence the horizontal pixel line updated by the TFT layer, driving signals of the at least one touch driving electrode is suspended until the horizontal pixel line updated by the TFT layer leaves the effect range of the at least one touch driving electrode.
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19. A method for driving a plurality of touch driving electrodes of a touch display, comprising:
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providing driving signals to at least one touch driving electrode to detect mutual capacitances to determine whether or not there is at least one touch position while updating one or more horizontal pixel lines of the display based on the steps; determining whether or not at least one horizontal pixel line, which is updating, is inside an effect range of at least one touch driving electrode, which is driven; continuously driving the at least one touch driving electrode while the at least one horizontal pixel line, which is updating, is outside the effect range; suspending driving signals of the at least one touch driving electrode while the at least one horizontal pixel line, which is updating, is inside the effect range; and driving the at least one touch driving electrode while updating the at least one horizontal pixel line which is outside the effect range. - View Dependent Claims (20)
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Specification