In-cell touch panel and display device, touch driving method
First Claim
1. An in-cell touch panel, comprising an array substrate that includes gate lines and a common electrode layer, and an opposed substrate disposed oppositely to the array substrate, wherein:
- the common electrode layer of the array substrate is partitioned into a plurality of sub- electrodes arranged in an array, wherein sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes;
upon a line-by-line scanning of gate lines covered by respective rows of sub-electrodes, in a time period when sub-electrodes in a currently-scanned row of sub-electrodes are used to be applied with a common electrode signal, touch driving electrodes in rows of sub-electrodes other than the currently-scanned row of sub-electrodes are used to be applied with touch driving signals;
the opposed substrate includes a plurality of touch sensing electrodes disposed across and over the touch driving electrodes, and an orthogonal projection of each of the touch sensing electrodes on the array substrate is located within an area where a corresponding common sub-electrode is located;
in a non-display area and/or a display area the array substrate is provided with;
touch signal lines that have one-to-one correspondence with the touch driving electrodes, display control lines, and a common electrode signal line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with a corresponding touch signal line via a touch switching device;
the touch switching device is configured to conduct between the corresponding touch signal line and the corresponding touch driving electrode when gate lines covered by rows of sub-electrodes other than the corresponding row of sub-electrodes are being scanned line by line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with the common electrode signal line via a display switching device, and a control end of the display switching device is connected with a corresponding display control line;
the display switching device is configured to conduct between the common electrode signal line and the corresponding touch driving electrode when gate lines covered by the corresponding row of sub-electrodes are being scanned line by line;
a display control line corresponding to each touch driving electrode is connected with gate lines covered by the corresponding touch driving electrode via turning-on switching devices, and is connected with a last scanned gate line covered by the corresponding touch driving electrode via a turning-off switching device, and a control end of the turning-off switching device is connected with a touch signal line that corresponds to the corresponding touch driving electrode; and
the turning-on switching devices and the turning-off switching device are configured to allow the display control line to have control signals with opposite polarities when gate lines covered by the corresponding row of sub-electrodes are being scanned and when the scanning of the gate lines covered by the corresponding row of sub-electrodes is completed.
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Accused Products
Abstract
An in-cell touch panel and a display device, a touch driving method are disclosed. A common electrode layer in an array substrate is partitioned into a plurality of sub-electrodes arranged in an array. Sub-electrodes that are alternately disposed in a respective row of sub-electrodes serve as touch driving sub-electrodes that form a touch driving electrode. Sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes. Touch sensing electrodes with projections within areas where corresponding common sub-electrodes are located are provided on an opposed substrate. Upon a line-by-line scanning of gate lines covered by respective rows of sub-electrodes, sub-electrodes in a currently-scanned row are applied with a common electrode signal, touch driving electrodes in rows of sub-electrodes other than the currently-scanned row of sub-electrodes are applied with touch driving signals.
11 Citations
17 Claims
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1. An in-cell touch panel, comprising an array substrate that includes gate lines and a common electrode layer, and an opposed substrate disposed oppositely to the array substrate, wherein:
- the common electrode layer of the array substrate is partitioned into a plurality of sub- electrodes arranged in an array, wherein sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes;
upon a line-by-line scanning of gate lines covered by respective rows of sub-electrodes, in a time period when sub-electrodes in a currently-scanned row of sub-electrodes are used to be applied with a common electrode signal, touch driving electrodes in rows of sub-electrodes other than the currently-scanned row of sub-electrodes are used to be applied with touch driving signals;
the opposed substrate includes a plurality of touch sensing electrodes disposed across and over the touch driving electrodes, and an orthogonal projection of each of the touch sensing electrodes on the array substrate is located within an area where a corresponding common sub-electrode is located;
in a non-display area and/or a display area the array substrate is provided with;
touch signal lines that have one-to-one correspondence with the touch driving electrodes, display control lines, and a common electrode signal line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with a corresponding touch signal line via a touch switching device;
the touch switching device is configured to conduct between the corresponding touch signal line and the corresponding touch driving electrode when gate lines covered by rows of sub-electrodes other than the corresponding row of sub-electrodes are being scanned line by line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with the common electrode signal line via a display switching device, and a control end of the display switching device is connected with a corresponding display control line;
the display switching device is configured to conduct between the common electrode signal line and the corresponding touch driving electrode when gate lines covered by the corresponding row of sub-electrodes are being scanned line by line;
a display control line corresponding to each touch driving electrode is connected with gate lines covered by the corresponding touch driving electrode via turning-on switching devices, and is connected with a last scanned gate line covered by the corresponding touch driving electrode via a turning-off switching device, and a control end of the turning-off switching device is connected with a touch signal line that corresponds to the corresponding touch driving electrode; and
the turning-on switching devices and the turning-off switching device are configured to allow the display control line to have control signals with opposite polarities when gate lines covered by the corresponding row of sub-electrodes are being scanned and when the scanning of the gate lines covered by the corresponding row of sub-electrodes is completed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- the common electrode layer of the array substrate is partitioned into a plurality of sub- electrodes arranged in an array, wherein sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes;
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16. A touch driving method, comprising:
- scanning gate lines covered by respective rows of sub-electrodes in a line-by-line manner, wherein the respective rows of sub-electrodes are from sub-electrodes arranged in an array, the sub-electrodes arranged in the array are included in a common electrode layer on an array substrate, sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes; and
upon scanning the gate lines covered by the respective rows of sub-electrodes in the line-by-line manner, applying a common electrode signal to sub-electrodes in a currently-scanned row of sub-electrodes, and applying touch driving signals to touch driving electrodes in rows of sub-electrodes other than the currently-scanned row of sub-electrodes when the common electrode signal is applied to the sub-electrodes in the currently-scanned row of sub-electrodes, wherein in a non-display area and/or a display area the array substrate is provided with;
touch signal lines that have one-to-one correspondence with the touch driving electrodes, display control lines, and a common electrode signal line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with a corresponding touch signal line via a touch switching device;
the touch switching device is configured to conduct between the corresponding touch signal line and the corresponding touch driving electrode when gate lines covered by rows of sub-electrodes other than the corresponding row of sub-electrodes are being scanned line by line;
in each row of sub-electrodes, a corresponding touch driving electrode is connected with the common electrode signal line via a display switching device, and a control end of the display switching device is connected with a corresponding display control line;
the display switching device is configured to conduct between the common electrode signal line and the corresponding touch driving electrode when gate lines covered by the corresponding row of sub-electrodes are being scanned line by line;
a display control line corresponding to each touch driving electrode is connected with gate lines covered by the corresponding touch driving electrode via turning-on switching devices, and is connected with a last scanned gate line covered by the corresponding touch driving electrode via a turning-off switching device, and a control end of the turning-off switching device is connected with a touch signal line that corresponds to the corresponding touch driving electrode; and
the turning-on switching devices and the turning-off switching device are configured to allow the display control line to have control signals with opposite polarities when gate lines covered by the corresponding row of sub-electrodes are being scanned and when the scanning of the gate lines covered by the corresponding row of sub-electrodes is completed.
- scanning gate lines covered by respective rows of sub-electrodes in a line-by-line manner, wherein the respective rows of sub-electrodes are from sub-electrodes arranged in an array, the sub-electrodes arranged in the array are included in a common electrode layer on an array substrate, sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes; and
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17. An in-cell touch panel, comprising an array substrate that includes gate lines and a common electrode layer, and an opposed substrate disposed oppositely to the array substrate, wherein:
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the common electrode layer of the array substrate is partitioned into a plurality of sub-electrodes arranged in an array, wherein sub-electrodes that are disposed alternately in a respective row of sub-electrodes serve as touch driving sub-electrodes which form a touch driving electrode, and sub-electrodes other than the touch driving sub-electrodes serve as common sub-electrodes; upon a line-by-line scanning of gate lines covered by respective rows of sub-electrodes, sub-electrodes in a currently-scanned row of sub-electrodes are used to be applied with a common electrode signal, and simultaneously touch driving electrodes in rows of sub-electrodes other than the currently-scanned row of sub-electrodes are used to be applied with touch driving signals; and the opposed substrate includes a plurality of touch sensing electrodes disposed across and over the touch driving electrodes, and an orthogonal projection of each of the touch sensing electrodes on the array substrate is located within an area where a corresponding common sub-electrode is located, wherein; in a non-display area and/or a display area the array substrate is provided with;
touch signal lines that have one-to-one correspondence with the touch driving electrodes, display control lines, and a common electrode signal line;in each row of sub-electrodes, a corresponding touch driving electrode is connected with a corresponding touch signal line via a touch switching device;
the touch switching device is configured to conduct between the corresponding touch signal line and the corresponding touch driving electrode when gate lines covered by rows of sub-electrodes other than the corresponding row of sub-electrodes are being scanned line by line;in each row of sub-electrodes, a corresponding touch driving electrode is connected with the common electrode signal line via a display switching device, and a control end of the display switching device is connected with a corresponding display control line;
the display switching device is configured to conduct between the common electrode signal line and the corresponding touch driving electrode when gate lines covered by the corresponding row of sub-electrodes are being scanned line by line;a display control line corresponding to each touch driving electrode is connected with gate lines covered by the corresponding touch driving electrode via turning-on switching devices, and is connected with a last scanned gate line covered by the corresponding touch driving electrode via a turning-off switching device, and a control end of the turning-off switching device is connected with a touch signal line that corresponds to the corresponding touch driving electrode; and the turning-on switching devices and the turning-off switching device are configured to allow the display control line to have control signals with opposite polarities when gate lines covered by the corresponding row of sub-electrodes are being scanned and when the scanning of the gate lines covered by the corresponding row of sub-electrodes is completed.
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Specification