In-cell touch display device
First Claim
1. A driver circuit for driving an in-cell touch display device, the in-cell touch display device comprising a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, the driver circuit comprising:
- a level shifter to modulate one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as a touch driving signal; and
a selection circuit to select the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or to select the load-free gate driving signal responsive to a second state of the touch enable signal indicating a touch period,wherein during the display period the high gate scanning voltage or the low gate scanning voltage is provided to one or more of the gate lines of the in-cell touch display device, andwherein during the touch period the load-free gate driving signal is provided to one or more of the gate lines of the in-cell touch display device and the touch driving signal is provided to one or more of the touch electrodes.
1 Assignment
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Accused Products
Abstract
An in-cell touch display device. A panel has a plurality of data lines, a plurality of gate lines and a plurality of touch electrodes disposed thereon. A touch driving signal is applied to the plurality of touch electrodes when a driving mode is a touch mode. A data driver drives the plurality of data lines. A gate driver drives the plurality of gate lines. The gate driver sequentially outputs a scanning signal for driving the plurality of gate lines to the plurality of gate lines when the driving mode is a display mode, and outputs a load-free driving signal corresponding to the touch driving signal to at least one gate line when the driving mode is the touch mode. A level shifter generates the load-free driving signal. A multiplexer inputs a scanning voltage or the load-free driving signal to the gate driver depending on the driving mode.
28 Citations
25 Claims
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1. A driver circuit for driving an in-cell touch display device, the in-cell touch display device comprising a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, the driver circuit comprising:
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a level shifter to modulate one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as a touch driving signal; and a selection circuit to select the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or to select the load-free gate driving signal responsive to a second state of the touch enable signal indicating a touch period, wherein during the display period the high gate scanning voltage or the low gate scanning voltage is provided to one or more of the gate lines of the in-cell touch display device, and wherein during the touch period the load-free gate driving signal is provided to one or more of the gate lines of the in-cell touch display device and the touch driving signal is provided to one or more of the touch electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of driving an in-cell touch display device, the in-cell touch display device comprising a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, the method comprising:
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modulating one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as a touch driving signal; and selecting the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or selecting the load-free gate driving signal responsive to a second state of a touch enable signal indicating a touch period, wherein during the display period the high gate scanning voltage or the low gate scanning voltage is provided to one or more of the gate lines of the in-cell touch display device, and wherein during the touch period the load-free gate driving signal is provided to one or more of the gate lines of the in-cell touch display device and the touch driving signal is provided to one or more of the touch electrodes. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An in-cell touch display device comprising:
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a panel including a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes disposed thereon, a touch driving signal being applied to the plurality of touch electrodes during a touch period; a level shifter to modulate one of a high gate scanning voltage or a low gate scanning voltage based on a timing signal to generate a load-free gate driving signal having a same phase and a same amplitude as the touch driving signal; a selection circuit to select the high gate scanning voltage or the low gate scanning voltage responsive to a first state of a touch enable signal indicating a display period or to select the load-free gate driving signal responsive to a second state of a touch enable signal indicating the touch period; a data driver to drive the plurality of data lines; and a gate driver to drive the gate lines, the gate driver sequentially outputting either the high gate scanning voltage or the low gate scanning voltage to one or more of the gate lines during the display period, and outputting the load-free gate driving signal to one or more of the gate lines during the touch period. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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Specification