DISPLAY DEVICE AND DRIVING METHOD THEREOF
First Claim
1. A display device comprising:
- a display panel comprising a pixel electrode receiving a data voltage and a common electrode receiving a common voltage; and
a touch sensor comprising a plurality of driving electrodes and a plurality of sensing electrodes,wherein the touch sensor applies a touch detection signal to the plurality of driving electrode and detects a touch location by receiving a sense signal from the plurality of sensing electrode in an active mode, and determines whether a touch is made by receiving sense signals of the plurality of sensing electrodes, that are fluctuated by a ripple of a common voltage applied to the common electrode according to driving of the display panel in an idle mode.
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Accused Products
Abstract
A display device according to the present inventive concept includes: a display panel comprising a pixel electrode receiving a data voltage and a common electrode receiving a common voltage; and a touch sensor comprising a plurality of driving electrodes and a plurality of sensing electrodes, wherein the touch sensor applies a touch detection signal to the plurality of driving electrode and detects a touch location by receiving a sense signal from the plurality of sensing electrode in an active mode, and determines whether a touch is made by receiving sense signals of the plurality of sensing electrodes, that are fluctuated by a ripple of a common voltage applied to the common electrode according to driving of the display panel in an idle mode.
13 Citations
20 Claims
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1. A display device comprising:
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a display panel comprising a pixel electrode receiving a data voltage and a common electrode receiving a common voltage; and a touch sensor comprising a plurality of driving electrodes and a plurality of sensing electrodes, wherein the touch sensor applies a touch detection signal to the plurality of driving electrode and detects a touch location by receiving a sense signal from the plurality of sensing electrode in an active mode, and determines whether a touch is made by receiving sense signals of the plurality of sensing electrodes, that are fluctuated by a ripple of a common voltage applied to the common electrode according to driving of the display panel in an idle mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for driving a display device including a pixel electrode receiving a data voltage, a common electrode receiving a common voltage, a plurality of driving electrodes, and a plurality of sensing electrodes, comprising:
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generating sense signals from the plurality of sensing electrodes for one frame during which a touch detection signal is applied to the plurality of driving electrodes; storing the sense signals to an active mode look-up table (LUT); and comparing sense signals of one frame with the sense signals stored in an active mode LUT to determine whether a touch is made and stopping outputting the touch detection signal when no touch is made. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification