CAPACITIVE IN-CELL TOUCH SCREEN, DRIVING METHOD FOR THE SAME, AND DISPLAY APPARATUS
First Claim
1. A capacitive in-cell touch panel comprising:
- a color filter substrate, a thin film transistor TFT array substrate having a common electrode layer, and a liquid crystal layer between the color filter substrate and the TFT array substrate, wherein a plurality of pixel units arranged in a matrix are set in the capacitive in-cell touch panel;
two gate signal lines are arranged between two adjacent rows of pixel units on the TFT array substrate, and two adjacent columns of pixel units constitute a group and commonly use a same data signal line located between the two adjacent columns of pixel units, wherein,the color filter substrate has a plurality of touch sensing electrodes;
the common electrode layer of the TFT array substrate has a plurality of touch driving electrodes, each of which is electrically connected to at least one touch driving signal line located between two adjacent groups of columns of pixel units;
during a display period of a frame of picture, each of the touch driving signal lines electrically connected to the touch driving electrode is used to transmit a common electrode signal and a touch scanning signal to the touch driving electrode in a time division manner.
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Abstract
The embodiments of the disclosure provides a capacitive in-cell touch panel, a driving method thereof and a display apparatus, wherein touch sensing electrodes are set on a color filter substrate, a common electrode layer connected as a whole plane on a TFT array substrate is divided into strips to be used as touch driving electrodes; touch driving signal lines are set in a display area of the touch panel by adopting a dual gate structure, which is helpful for a narrow frame design of the touch panel; each of the touch driving electrodes is electrically connected to at least one touch driving signal line and is supplied with a driving signal by a plurality of touch driving signal lines simultaneously, such that transmission efficiency of the driving signal can be improved to the maximum extent and delay of the driving signal can be reduced.
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Citations
15 Claims
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1. A capacitive in-cell touch panel comprising:
- a color filter substrate, a thin film transistor TFT array substrate having a common electrode layer, and a liquid crystal layer between the color filter substrate and the TFT array substrate, wherein a plurality of pixel units arranged in a matrix are set in the capacitive in-cell touch panel;
two gate signal lines are arranged between two adjacent rows of pixel units on the TFT array substrate, and two adjacent columns of pixel units constitute a group and commonly use a same data signal line located between the two adjacent columns of pixel units, wherein,the color filter substrate has a plurality of touch sensing electrodes; the common electrode layer of the TFT array substrate has a plurality of touch driving electrodes, each of which is electrically connected to at least one touch driving signal line located between two adjacent groups of columns of pixel units;
during a display period of a frame of picture, each of the touch driving signal lines electrically connected to the touch driving electrode is used to transmit a common electrode signal and a touch scanning signal to the touch driving electrode in a time division manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- a color filter substrate, a thin film transistor TFT array substrate having a common electrode layer, and a liquid crystal layer between the color filter substrate and the TFT array substrate, wherein a plurality of pixel units arranged in a matrix are set in the capacitive in-cell touch panel;
Specification