Display device and driving method thereof
First Claim
1. A method of driving a display device, the method comprising:
- connecting a plurality of data lines, formed in a panel, to ground during a touch preparation period after a touch sensing period arrives until a plurality of sensing pulses are supplied to a plurality of driving electrodes, the plurality of sensing pulses including at least a first set of sensing pulses to be applied to a first driving electrode of the plurality of driving electrodes during a first portion of the touch sensing period, and a second set of sensing pulses to be supplied to a second driving electrode of the plurality of driving electrodes during a second portion of the touch sensing period;
floating the plurality of data lines while the first set of sensing pulses are supplied to the first of driving electrode after the touch preparation period;
connecting the plurality of data lines to ground while no sensing pulse is supplied to the plurality of driving electrodes, after the first set of sensing pulses have been supplied to the first driving electrode, but before the second set of sensing pulses are supplied to the second driving electrode; and
floating the plurality of data lines while the second set of sensing pulses are supplied to the second of driving electrode.
1 Assignment
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Accused Products
Abstract
Disclosed is a display device. The display device includes a panel into which a touch panel including a plurality of driving electrodes and a plurality of receiving electrodes is built, a touch sensing unit configured to supply a plurality of sensing pulses to the plurality of driving electrodes during a touch sensing period, a driver configured to drive the panel to allow the panel to display an image during an image display period, and a data line controller configured to connect a plurality of data lines to ground in a sensing pulse non-output period where the plurality of the sensing pulses are not supplied to the plurality of driving electrodes during the touch sensing period.
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Citations
14 Claims
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1. A method of driving a display device, the method comprising:
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connecting a plurality of data lines, formed in a panel, to ground during a touch preparation period after a touch sensing period arrives until a plurality of sensing pulses are supplied to a plurality of driving electrodes, the plurality of sensing pulses including at least a first set of sensing pulses to be applied to a first driving electrode of the plurality of driving electrodes during a first portion of the touch sensing period, and a second set of sensing pulses to be supplied to a second driving electrode of the plurality of driving electrodes during a second portion of the touch sensing period; floating the plurality of data lines while the first set of sensing pulses are supplied to the first of driving electrode after the touch preparation period; connecting the plurality of data lines to ground while no sensing pulse is supplied to the plurality of driving electrodes, after the first set of sensing pulses have been supplied to the first driving electrode, but before the second set of sensing pulses are supplied to the second driving electrode; and floating the plurality of data lines while the second set of sensing pulses are supplied to the second of driving electrode. - View Dependent Claims (2)
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3. A display device comprising:
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a panel into which a touch panel including a plurality of driving electrodes and a plurality of receiving electrodes is built; a touch sensing unit configured to supply a plurality of sensing pulses to the plurality of driving electrodes during a touch sensing period, the plurality of sensing pulses including at least a first set of sensing pulses to be applied to a first driving electrode of the plurality of driving electrodes during a first portion of the touch sensing period, and a second set of sensing pulses to be supplied to a second driving electrode of the plurality of driving electrodes during a second portion of the touch sensing period; a driver configured to drive the panel to allow the panel to display an image during an image display period; and a data line controller configured to; float a plurality of data lines while the first set of sensing pulses are supplied to the first of driving electrode; connect the plurality of data lines to ground while no sensing pulse is supplied to the plurality of driving electrodes, after the first set of sensing pulses have been supplied to the first driving electrode, but before the second set of sensing pulses are supplied to the second driving electrode; and float the plurality of data lines while the second set of sensing pulses are supplied to the second of driving electrode. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10)
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11. A method for driving a display device, the method comprising:
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connecting a plurality of data lines of the display panel to a data driver to drive a display portion of the display device during a display period of a frame; and driving a touch sensor portion of the display device during a sense period of the frame, wherein driving the touch sensor comprises; connecting the plurality of data lines to ground during a preparation portion of the sense period; sequentially supplying a plurality of sensing pulses to a plurality of driving electrodes during a sensing portion of the sense period, the plurality of sensing pulses including at least a first set of sensing pulses to be applied to a first driving electrode of the plurality of driving electrodes during a first portion of the sense period, and a second set of sensing pulses to be supplied to a second driving electrode of the plurality of driving electrodes during a second portion of the sense period; floating one or more of the plurality of data lines during the sensing portion of the sense period while the first set of sensing pulses are being supplied to at least one of the plurality of driving electrodes; connecting the plurality of data lines to ground while no sensing pulse is supplied to the plurality of driving electrodes, after the first set of sensing pulses have been supplied to the first driving electrode, but before a second set of sensing pulses are supplied to the second driving electrode; and floating the plurality of data lines while the second set of sensing pulses are supplied to the second driving electrode.
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12. A display device comprising:
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a display panel including a display portion and a touch portion, the display portion including a plurality of data lines, and the touch portion including a plurality of driving electrodes and a plurality of receiving electrodes; a data driver configured to drive the display portion of the display panel; a plurality of switches each of which is coupled to a corresponding one of the plurality of data lines; and a controller configured to control operation of the plurality of switches, wherein the controller controls the switches to; connect the plurality of data lines to the data driver during a display period of a frame; connect the plurality of data lines to ground during a preparation portion of a sense period of the frame, until a plurality of sensing pulses are supplied to the plurality of driving electrodes, the plurality of sensing pulses including at least a first set of sensing pulses to be applied to a first driving electrode of the plurality of driving electrodes during a first portion of the sense period, and a second set of sensing pulses to be supplied to a second driving electrode of the plurality of driving electrodes during a second portion of the sense period; and float one or more of the plurality of data lines during a sensing portion of the sense period while the first set of sensing pulses are supplied to the first driving electrode; connect the plurality of data lines to ground while no sensing pulse is supplied to the plurality of driving electrodes, after the first set of sensing pulses have been supplied to the first driving electrode, but before the second set of sensing pulses are supplied to the second driving electrode; and float the plurality of data lines while the second set of sensing pulses are supplied to the second driving electrode. - View Dependent Claims (13, 14)
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Specification