Touch electrode structure, touch display panel and driving method and device thereof

Abstract

The present application discloses a touch electrode structure, a touch display panel and a driving method and device thereof, comprising a plurality of electrode arrays formed by electrode rows arranged along a first direction and electrode columns arranged along a second direction; two adjacent electrode rows are arranged at intervals, and two adjacent electrode columns are arranged at intervals; the first electrode and the second electrode are alternately arranged on the same electrode row; the first electrode and the second electrode are alternately arranged on the same electrode column; the electrodes of the same type as the first reference electrode on each electrode row are electrically connected to the electrodes of the same type in a first diagonal direction to form a plurality of first conductive circuits; the electrodes of the same type as the second reference electrode on each electrode row are electrically connected to the electrodes of the same type in a second diagonal direction to form a plurality of second conductive circuits; the first electrode on the outermost electrode column is electrically connected to the adjacent second electrode, so that the number of electrodes on each mixed conductive circuit is equal to the number of electrodes on each electrode column.

Description

Technical Field

[0001] The present application generally relates to the field of touch display technology, and specifically to a touch electrode structure, a touch display panel, and a driving method and device thereof. Background Art

[0002] With the rapid development of display technology, display panels have broad application space in the fields of vehicles, mobile phones, tablets, computers and TVs. Generally speaking, touch function has become one of the standard features of most display panels.

[0003] Touch screens can be divided into various types, such as resistive, capacitive, infrared, ultrasonic, and optical, according to their different mechanisms of sensing the touch position of the operator. Capacitive touch screens are commonly used in portable electronic devices. The X-channel and Y-channel routing of existing electronic device touch screens are arranged parallel to the long and short sides of the screen, so it is impossible to avoid the routing on the left and right sides of the screen.

[0004] Under the premise that the existing touch screen wiring is connected to the touch electrode at one end, the electrode lead spacing connecting the touch function layer is generally about 10 microns. Under the existing width, the area occupied by dozens of leads is more than 2 mm; even if a touch electrode is used at each opposite end of the touch screen to connect all the wiring, the width of the wiring area on both sides of the non-touch electrode can only be reduced by half at most. Therefore, existing portable electronic devices have wide black borders around them, especially on both sides of the non-touch electrodes of the screen, and the large black borders reduce the screen-to-body ratio, wasting resources. Summary of the invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a touch electrode structure, a touch display panel and a driving method and device thereof, which can realize single-sided routing, shorten the routing length, improve the effective utilization rate of the touch panel, and achieve the purpose of narrowing the touch panel frame.

[0006] In a first aspect, the present application provides a touch electrode structure, comprising a plurality of electrode arrays formed of electrode rows arranged along a first direction and electrode columns arranged along a second direction; wherein the electrode located at the lower left corner is a first reference electrode and a second reference electrode adjacent to the first reference electrode on the same electrode row, the first reference electrode is one of the first electrode and the second electrode, and the second reference electrode is the other of the first electrode and the second electrode;

[0007] There is an interval between two adjacent electrode rows, and there is an interval between two adjacent electrode columns;

[0008] The first electrodes and the second electrodes are arranged alternately on the same electrode row; the first electrodes and the second electrodes are arranged alternately on the same electrode column;

[0009] The first reference electrode is electrically connected to an electrode located at the upper right corner of the reference electrode on the next electrode row in a first diagonal direction, and the second reference electrode is electrically connected to an electrode located at the upper left corner of the second reference electrode on the next electrode row in a second diagonal direction; the first diagonal direction and the second diagonal direction intersect;

[0010] The electrodes of the same type as the first reference electrode on each electrode row are electrically connected to the electrodes of the same type in a first diagonal direction to form a plurality of first conductive lines;

[0011] The electrodes of the same type as the second reference electrode on each electrode row are electrically connected to the electrodes of the same type in a second diagonal direction to form a plurality of second conductive lines;

[0012] The first electrode on the outermost electrode column is electrically connected to the adjacent second electrode, so that the first conductive circuit where the first electrode is located and the second conductive circuit where the second electrode is located are connected to form a mixed conductive circuit, and the number of electrodes on each mixed conductive circuit is equal to the number of electrodes on each electrode column.

[0013] Optionally, it comprises a first electrode layer and a second electrode layer which are stacked, wherein the first electrode is arranged on the first electrode layer, and the second electrode is arranged on the second electrode layer.

[0014] Optionally, the first electrodes are connected to each other via a first connecting line, and the first connecting line is located on the first electrode layer;

[0015] The second electrodes are connected to each other via a second connecting line, and the second connecting line is located on the second electrode layer.

[0016] Optionally, the first electrode and the second electrode are electrically connected through a first via hole.

[0017] Optionally, the electrode is in a rectangular shape, a first side of the electrode is parallel to a first direction, and a second side of the electrode is parallel to a second direction.

[0018] Optionally, the multiple electrodes form multiple independent conductive channels, the number of the conductive channels is the same as the number of electrodes on each of the electrode rows; the number of electrodes on each conductive channel is the same as the number of electrodes on each of the electrode columns, and the conductive channel is one of the first conductive circuit, the second conductive circuit and the mixed conductive circuit.

[0019] In a second aspect, the present application provides a touch display panel, comprising a touch electrode structure as described in any one of the above and a driving device for driving the touch electrode, wherein the driving device is arranged on one side of the electrode row, and the driving device is connected to the electrodes of the outermost electrode row through multiple signal lines, wherein one signal line corresponds to one of the electrodes on the outermost electrode row, and each signal line is electrically connected to a conductive channel where the electrode is located through the electrode; the conductive channel is electrically connected to the first conductive circuit where the electrode is located, the second conductive circuit where the electrode is located, or the mixed conductive circuit where the electrode is located.

[0020] Optionally, it comprises a display area and a frame area, the touch electrode structure is located in the display area, and the driving device is located in the frame area.

[0021] In a third aspect, the present application provides a touch display device, comprising any of the touch display panels described above.

[0022] In a fourth aspect, the present application provides a method for driving a touch display panel, for driving a touch display panel as described above, comprising n conductive channels, the method comprising:

[0023] In the touch control phase, the first n-1 conductive channels are scanned in sequence according to a preset order;

[0024] When scanning is performed through the signal line to the i-th conductive channel corresponding to the i-th signal line, a sensing signal is simultaneously received on the sensing channel, which is the i+1th to nth conductive channels, where i=(1, 2, ..., n-1).

[0025] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0026] The touch electrode structure provided in the embodiment of the present application changes the connection method of the electrodes so that the electrodes are connected diagonally to form a diagonal cross channel, and the upper electrode layer is overlapped with the adjacent lower electrode layer at the left and right edges, and all the wiring is led out from the lower frame; so that wiring is not required on both sides and the upper side of the touch function layer, the length of some wiring is shortened, the effective utilization rate of the touch screen is improved, and the purpose of narrowing the touch screen frame is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 A schematic diagram of a touch electrode structure in the prior art

[0029] Figure 2A schematic diagram of a touch electrode structure provided in an embodiment of the present application;

[0030] Figure 3 A schematic diagram of the arrangement of a touch electrode structure provided in an embodiment of the present application;

[0031] Figure 4 For the corresponding Figure 3 Schematic diagram of the conductive channel in the figure;

[0032] Figure 5 A schematic diagram of another arrangement of a touch electrode structure provided in an embodiment of the present application;

[0033] Figure 6 For the corresponding Figure 5 Schematic diagram of the conductive channel in the figure;

[0034] Figure 7 A schematic diagram of another arrangement of a touch electrode structure provided in an embodiment of the present application;

[0035] Figure 8 For the corresponding Figure 7 Schematic diagram of the conductive channel in the figure;

[0036] Fig. 9 A schematic cross-sectional view of a touch electrode structure provided in an embodiment of the present application;

[0037] Fig.10 A schematic diagram of the structure of a first electrode layer provided in an embodiment of the present application;

[0038] Fig.11 A schematic structural diagram of a second electrode layer provided in an embodiment of the present application. DETAILED DESCRIPTION

[0039] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] The mutual capacitance touch electrode structure includes a touch drive electrode and a touch sensing electrode. The touch drive electrode and the touch sensing electrode form a mutual capacitance for touch sensing. The touch drive electrode is used to input an excitation signal (touch drive signal), and the touch sensing electrode is used to output a touch sensing signal. By inputting an excitation signal to, for example, a touch drive electrode extending longitudinally, and receiving a touch sensing signal from, for example, a touch sensing electrode extending transversely, the capacitance value of the coupling point (for example, an intersection) of the transverse and longitudinal electrodes can be obtained. When a finger touches the capacitive screen, the coupling between the touch drive electrode and the touch sensing electrode near the touch point is affected, thereby changing the capacitance between the two electrodes. Based on the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point (intersection) can be calculated.

[0042] Figure 1 A touch electrode structure in the prior art is shown, including a plurality of first electrodes arranged horizontally and a plurality of second electrodes arranged vertically. The first electrodes are connected to each other through a first connecting line, and the second electrodes are connected to each other through a second connecting line. Both the first electrode block and the second electrode block are in a diamond structure, the first connecting line is a horizontal line, and the second connecting line is a vertical line. The horizontal scanning is achieved through the first connecting line, and the vertical scanning is achieved through the second connecting line.

[0043] As mentioned in the background art, this wiring method is arranged parallel to the long side and the short side of the touch screen, so it is impossible to avoid the wiring on the left and right sides of the screen, making the effect of achieving a narrow frame unsatisfactory.

[0044] Please see Figure 2 A touch electrode structure comprises a plurality of electrode arrays formed of electrode rows arranged along a first direction X and electrode columns arranged along a second direction Y; the electrodes comprise first electrodes 1 and second electrodes 2, wherein two adjacent electrode rows are spaced apart and two adjacent electrode columns are spaced apart; the first electrodes 1 and the second electrodes 2 are alternately arranged on the same electrode row; the first electrodes 1 and the second electrodes 2 are alternately arranged on the same electrode column.

[0045] It should be noted that, in the embodiment of the present application, the first direction X and the second direction Y are defined to correspond to the boundary directions of the display area respectively. When setting them specifically, they can be selected according to different application scenarios or different devices. Of course, in other embodiments, the first direction X and the second direction Y can be interchangeable, the first direction X can be the arrangement direction of the pixel columns, and the second direction Y can be the arrangement direction of the pixel rows.

[0046] In the embodiment of the present application, the shape of the first electrode 1 and the second electrode 2 can be any shape, such as a triangle, a quadrilateral, a circle or other shapes, which is not limited in the embodiment of the present application. In the embodiment of the present application, the shape of the electrode is preferably set to a rectangle, the first side of the electrode is parallel to the first direction X, and the second side of the electrode is parallel to the second direction Y.

[0047] Among them, the electrode located at the lower left corner is the first reference electrode P1 and the second reference electrode P2 adjacent to the first reference electrode P1 on the same electrode row, the first reference electrode P1 is one of the first electrode 1 and the second electrode 2, and the second reference electrode P2 is the other of the first electrode 1 and the second electrode 2. It should be noted that the reference electrodes selected in the embodiment of the present application are the four electrodes located at the lower left corner for exemplary description, and in other embodiments, other positions can also be selected as reference electrodes, and the setting method of other positions is the same as that of the reference electrode at the lower left corner, which will not be repeated in this application.

[0048] The first reference electrode P1 is electrically connected to an electrode located at the upper right corner of the reference electrode on the next electrode row in a first diagonal direction, and the second reference electrode P2 is electrically connected to an electrode located at the upper left corner of the second reference electrode P2 on the next electrode row in a second diagonal direction; the first diagonal direction and the second diagonal direction intersect.

[0049] In the embodiment of the present application, the "first diagonal direction" is defined as the direction from the lower left corner to the upper right corner; the "second diagonal direction" is defined as the direction from the lower right corner to the upper left corner; it should be noted that the diagonal direction in the present application is a general direction, from the same type of electrode to the approximate direction of the next adjacent electrode of the same type, and does not limit the electrical connection between the two electrodes to the edge position. The direction of the first diagonal line and the direction of the second diagonal line can have different settings according to different application scenarios, and the present application does not limit this. For example, for an electrode with a rectangular structure, a connection can be made at the vertex between the vertex of the electrode and the vertex between the next adjacent electrode.

[0050] In the embodiment of the present application, the connection lines between the first electrodes 1 face one same direction, and the connection lines between the second electrodes 2 face another same direction. Since the relative positions of the first electrode 1 and the second electrode 2 can be interchanged in different embodiments, the connection lines between the electrodes in the embodiment of the present application are related to the positional relationship of the electrodes.

[0051] In the embodiment of the present application, the four electrodes in the lower left corner are used for exemplary description. For example, when the electrode in the lower left corner is the first electrode 1, the direction of the connection line between the first electrode 1 and the adjacent first electrode 1 is the same as the first diagonal direction; the direction of the connection line between the second electrode 2 and the adjacent second electrode 2 is the same as the second diagonal direction. For another example, when the electrode in the lower left corner is the second electrode 2, the direction of the connection line between the second electrode 2 and the adjacent second electrode 2 is the same as the first diagonal direction, and the direction of the connection line between the first electrode 1 and the adjacent first electrode 1 is the same as the second diagonal direction.

[0052] Therefore, when setting, the electrodes of the same type as the first reference electrode P1 on each electrode row are electrically connected to the electrodes of the same type in the first diagonal direction to form a plurality of first conductive circuits; the electrodes of the same type as the second reference electrode P2 on each electrode row are electrically connected to the electrodes of the same type in the second diagonal direction to form a plurality of second conductive circuits.

[0053] In the embodiment of the present application, the first reference electrode P1 is taken as the first electrode 1, and the second reference electrode P2 is taken as the second electrode 2 for exemplary description. For each touch electrode on the touch substrate, the first electrode 1 is electrically connected to the first electrode 1 located at the upper right corner of the adjacent row, and the second electrode 2 is electrically connected to the second electrode 2 located at the upper left corner of the adjacent row. Therefore, a plurality of parallel conductive lines are formed.

[0054] On the outermost electrode column, the first electrode 1 is electrically connected to the adjacent second electrode 2, so that the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located are connected to form a mixed conductive circuit, and the number of electrodes on each mixed conductive circuit is equal to the number of electrodes on each electrode column.

[0055] The multiple electrodes form multiple independent conductive channels, the number of the conductive channels is the same as the number of electrodes on each electrode row; the number of electrodes on each conductive channel is the same as the number of electrodes on each electrode column, and the conductive channel is one of the first conductive circuit, the second conductive circuit and the mixed conductive circuit.

[0056] It should be noted that, for different embodiments, the number of electrodes on the first conductive circuit and the second conductive circuit is different, and by connecting the first electrode 1 and the second electrode 2 on the two outermost electrode columns, the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located can be connected in series to form a mixed conductive circuit including the first electrode 1 and the second electrode 2. In specific settings, due to the different number of touch electrodes on the touch substrate, different connection methods are used.

[0057] Embodiment 1

[0058] like Figure 3-4 As shown, in the embodiment of the present application, a situation is shown in which the number of electrodes on the electrode row and the electrode column is the same, that is, the first electrodes 1 and the second electrodes 2 are arranged in an array to form an m×m electrode matrix, and the number of the first electrodes 1 and the second electrodes 2 on each electrode row is the same. Figure 2 , an 8×8 electrode matrix is ​​shown, wherein (i, j) represents the coordinate position of the electrode, that is, (1,1) is the first electrode 1, and (1,2) is the second electrode 2.

[0059] In the embodiment of the present application, the first electrodes 1 and the first electrodes 1 are connected in the first diagonal direction to form 7 first conductive circuits. In the first conductive circuit, there are 8 first electrodes 1 on L1, 6 first electrodes 1 on L2, 4 first electrodes 1 on L3, 2 first electrodes 1 on L4, 6 first electrodes 1 on L5, 4 first electrodes 1 on L6, and 2 first electrodes 1 on L7.

[0060] Similarly, the second electrodes 2 and the second electrodes 2 are connected in the second diagonal direction to form 7 first conductive circuits. In the first conductive circuits, there are 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 8 first electrodes 1 on T4, 6 first electrodes 1 on T5, 4 first electrodes 1 on T6, and 2 first electrodes 1 on T7.

[0061] In order to make the number of electrodes on each conductive circuit the same, and at the same time, make each conductive circuit form a conductive circuit that is staggered horizontally and vertically, so that each electrode can be scanned, in the present application, the first electrode 1 is electrically connected to the adjacent second electrode 2 on the outermost electrode column, so that the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located are connected to form a mixed conductive circuit, and the number of electrodes on each of the mixed conductive circuits is equal to the number of electrodes on each electrode column.

[0062] For example, in the present application, (7, 1) is connected to (6, 1) in the first column, so that the two conductive lines L7 and T3 form a mixed conductive line; (5, 1) is connected to (4, 1) in the first column, so that the two conductive lines L6 and T2 form a mixed conductive line; (3, 1) is connected to (2, 1) in the first column, so that the two conductive lines L5 and T1 form a mixed conductive line.

[0063] Similarly, in the eighth column, (7,8) is connected to (6,8), so that the two conductive lines L2 and T7 form a mixed conductive line; in the eighth column, (5,8) is connected to (4,8), so that the two conductive lines L3 and T6 form a mixed conductive line; in the eighth column, (3,8) is connected to (2,8), so that the two conductive lines L4 and T5 form a mixed conductive line.

[0064] Through the connection method of the electrodes in the embodiment of the present application, 8 independent conductive channels can be formed, each electrode is located on an independent conductive channel, and each conductive channel intersects with other conductive channels. Therefore, as a mutual capacitive touch method, a scanning signal can be sent through one conductive channel, and other conductive channels are used as sensing channels. Through the cross-arranged multiple conductive channels, the touched electrode can be quickly determined.

[0065] Embodiment 2

[0066] like Figure 5-6 As shown, the embodiment of the present application also shows a connection scheme in which the number of electrode rows is less than the number of electrode columns. Since the starting point of the connection line is set at the lower frame position in the embodiment of the present application, the number of conductive channels is equal to the number of electrode columns, and the number of electrodes on each conductive channel is equal to the number of electrode rows.

[0067] When the number of columns or rows is reduced, the number of first conductive lines and the number of second conductive lines formed are also reduced accordingly. In the embodiment of the present application, a 6×8 electrode matrix is ​​shown, where (i, j) represents the coordinate position of the electrode, that is, (1,1) is the first electrode 1, and (1,2) is the second electrode 2.

[0068] In the embodiment of the present application, the first electrodes 1 and the first electrodes 1 are connected in the first diagonal direction to form five first conductive circuits. In the first conductive circuit, there are six first electrodes 1 on L1, six first electrodes 1 on L2, four first electrodes 1 on L3, two first electrodes 1 on L4, four first electrodes 1 on L5, and two first electrodes 1 on L6.

[0069] Similarly, the second electrodes 2 and the second electrodes 2 are connected in the second diagonal direction to form 7 first conductive lines. In the first conductive lines, there are 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 6 first electrodes 1 on T4, 4 first electrodes 1 on T5, and 2 first electrodes 1 on T6.

[0070] In order to make the number of electrodes on each conductive circuit the same, and at the same time, make each conductive circuit form a conductive circuit that is staggered horizontally and vertically, so that each electrode can be scanned, in the present application, the first electrode 1 is electrically connected to the adjacent second electrode 2 on the outermost electrode column, so that the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located are connected to form a mixed conductive circuit, and the number of electrodes on each of the mixed conductive circuits is equal to the number of electrodes on each electrode column.

[0071] Since the number of electrodes on L1 and L2 in the first conductive circuit is the same and equal to the number of electrode rows, it is not necessary to connect the electrodes on the first conductive circuit to other electrodes on the outermost electrode column. Similarly, for the second electrodes 2 on T3 and T4, it is not necessary to connect them at the outer electrodes.

[0072] For example, in the present application, (5,1) is connected to (4,1) in the first column, so that the two conductive lines L6 and T2 form a mixed conductive line; (3,1) is connected to (2,1) in the first column, so that the two conductive lines L5 and T1 form a mixed conductive line.

[0073] Similarly, in the eighth column, (5,8) is connected to (4,8), so that the two conductive lines L3 and T6 form a mixed conductive line; in the eighth column, (3,8) is connected to (2,8), so that the two conductive lines L4 and T5 form a mixed conductive line.

[0074] Through the connection method of the electrodes in the embodiment of the present application, 8 independent conductive channels can be formed, each electrode is located on an independent conductive channel, and each conductive channel intersects with other conductive channels. Therefore, as a mutual capacitive touch method, a scanning signal can be sent through one conductive channel, and other conductive channels are used as sensing channels. Through the cross-arranged multiple conductive channels, the touched electrode can be quickly determined.

[0075] Embodiment 3

[0076] like Figure 7-8 As shown, the embodiment of the present application also shows a connection scheme in which the number of electrode rows is greater than the number of electrode columns. Since the starting point of the connection line is set at the lower frame position in the embodiment of the present application, the number of conductive channels is equal to the number of electrode columns, and the number of electrodes on each conductive channel is equal to the number of electrode rows.

[0077] When the number of columns or rows is reduced, the number of first conductive lines and the number of second conductive lines formed are also reduced accordingly. In the embodiment of the present application, an 8×7 electrode matrix is ​​shown, where (i, j) represents the coordinate position of the electrode, that is, (1,1) is the first electrode 1, and (1,2) is the second electrode 2.

[0078] In the embodiment of the present application, the first electrodes 1 and the first electrodes 1 are connected in the first diagonal direction to form 7 first conductive circuits. In the first conductive circuit, there are 7 first electrodes 1 on L1, 5 first electrodes 1 on L2, 3 first electrodes 1 on L3, 1 first electrode 1 on L4, 6 first electrodes 1 on L5, 4 first electrodes 1 on L6, and 2 first electrodes 1 on L7.

[0079] Similarly, the second electrodes 2 and the second electrodes 2 are connected in the second diagonal direction to form 7 first conductive lines. In the first conductive lines, there are 2 first electrodes 1 on T1, 4 first electrodes 1 on T2, 6 first electrodes 1 on T3, 7 first electrodes 1 on T4, 5 first electrodes 1 on T5, and 3 first electrodes 1 on T6.

[0080] In order to make the number of electrodes on each conductive circuit the same, and at the same time, make each conductive circuit form a conductive circuit that is staggered horizontally and vertically, so that each electrode can be scanned, in the present application, the first electrode 1 is electrically connected to the adjacent second electrode 2 on the outermost electrode column, so that the first conductive circuit where the first electrode 1 is located and the second conductive circuit where the second electrode 2 is located are connected to form a mixed conductive circuit, and the number of electrodes on each of the mixed conductive circuits is equal to the number of electrodes on each electrode column.

[0081] Since each of the first conductive lines is smaller than the number of electrode rows, the electrodes on each first conductive line are connected to other electrodes on the outermost electrode column. In addition, in the present application, since the first diagonal direction and the second diagonal direction are fixed directions, there may be an electrode that does not exist in the diagonal direction, so it can be treated as a conductive line alone. Such as (1,7) and (8,7) in this embodiment.

[0082] For example, in the present application, (7, 1) is connected to (6, 1) in the first column, so that the two conductive lines L7 and T3 form a mixed conductive line; (5, 1) is connected to (4, 1) in the first column, so that the two conductive lines L6 and T2 form a mixed conductive line; (3, 1) is connected to (2, 1) in the first column, so that the two conductive lines L5 and T1 form a mixed conductive line.

[0083] Similarly, in the eighth column, (8,7) is connected to (7,7), so that the two conductive lines L1 and T7 form a mixed conductive line; in the eighth column, (6,7) is connected to (5,7), so that the two conductive lines L2 and T6 form a mixed conductive line; in the eighth column, (4,7) is connected to (3,7), so that the two conductive lines L3 and T5 form a mixed conductive line; in the eighth column, (2,7) is connected to (1,7), so that the two conductive lines L4 and T4 form a mixed conductive line.

[0084] Through the connection method of the electrodes in the embodiment of the present application, 7 independent conductive channels can be formed, each electrode is located on an independent conductive channel, and each conductive channel intersects with other conductive channels. Therefore, as a mutual capacitive touch method, a scanning signal can be sent through one conductive channel, and other conductive channels are used as sensing channels. Through the cross-arranged multiple conductive channels, the touched electrode can be quickly determined.

[0085] In the embodiment of the present application, in order to simplify the preparation process, the first electrode 1 and the second electrode 2 are arranged on different layers, such as Figure 9-11 As shown. Specifically, it includes a first electrode layer 11 and a second electrode layer 12 stacked, the first electrode 1 is arranged on the first electrode layer 11, and the second electrode 2 is arranged on the second electrode layer 12. The first electrodes 1 are connected to each other through a first connecting line 3, and the first connecting line 3 is located on the first electrode layer 11; the second electrodes 2 are connected to each other through a second connecting line 4, and the second connecting line 4 is located on the second electrode layer 12. The first electrode 1 and the second electrode 2 are electrically connected through a first via 5.

[0086] It should be noted that, in the embodiment of the present application, by arranging the first electrode 1 and the second electrode 2 on different layers, the first connecting wire 3 and the second connecting wire 4 can be conveniently arranged to be insulated and crossed with each other.

[0087] However, the embodiments of the present application are not limited to this. In other embodiments, the first electrode 1 and the second electrode 2 can also be set on the same layer, the first electrodes 1 and the first electrodes 1 are electrically connected through the second vias, and the second electrodes 2 and the second electrodes 2 are electrically connected through the third vias. When setting, the second vias and the third vias are required to be set on different layers.

[0088] The present application provides a touch display panel, comprising a touch electrode structure as described above and a driving device 10 for driving the touch electrode, wherein the driving device 10 is arranged on one side of an electrode row, and the driving device 10 is connected to the electrodes of the outermost electrode row through a plurality of signal lines 20, wherein one signal line 20 corresponds to one of the electrodes on the outermost electrode row, and each signal line 20 is electrically connected to a conductive channel where the electrode is located through the electrode; the conductive channel is electrically connected to a first conductive circuit where the electrode is located, a second conductive circuit where the electrode is located, or a mixed conductive circuit where the electrode is located. The display area and the frame area are included, the touch electrode structure is located in the display area, and the driving device 10 is located in the frame area.

[0089] The driving device 10 may be a touch chip, which is used to provide a touch driving signal to the electrode through a conductive channel and to receive a touch sensing signal from a sensing channel and process the sensing signal to realize a touch sensing function.

[0090] It should be noted that in the embodiment of the present application, the driving device 10 is set in the lower frame in the frame area for exemplary description, but the embodiment of the present application is not limited to this. The driving device 10 can be set in the upper frame, left frame or right frame in the frame area.

[0091] Based on the driving device 10 set on the lower frame, the multiple signal lines 20 connected to the driving device 10 can be arranged on the same side as the driving device 10, which is convenient for connecting the driving device 10. At the same time, the frame area can be reduced without routing from the left and right frames, thereby achieving a narrow frame.

[0092] Please continue to refer to Figure 2 The present application provides a method for driving a touch display panel, for driving a touch display panel as described above, comprising n conductive channels, the method comprising:

[0093] In the touch control phase, the first n-1 conductive channels are scanned in sequence according to a preset order;

[0094] When the driving device 10 scans the i-th conductive channel corresponding to the i-th signal line, the sensing signal on the sensing channel is received at the same time, and the sensing channels are the i+1th to nth conductive channels, where i=(1, 2, ..., n-1).

[0095] In other words, the above two electrodes are the transmitting electrode (Tx) for transmitting touch signals, and the sensing electrode (Rx) for generating sensing signals according to the touch signals. By transmitting touch signals in turn, and detecting the sensing signals generated in each sensing electrode when different transmitting electrodes transmit, the location of the touch can be determined. Even if there are multiple touch points on the screen, the real coordinates of each touch point can be calculated.

[0096] It should be noted that, since the remaining conductive channels, i.e., the 2nd, 3rd, 4th, ..., nth conductive channels, are arranged crosswise with the first conductive channel in the embodiment of the present application, and the remaining conductive channels, i.e., the 3rd, 4th, ..., nth conductive channels, are arranged crosswise with the second conductive channel, when corresponding to the n-1th conductive channel, it is sufficient to receive the sensing signal only on the nth channel. There is no need to scan on the nth channel, so when performing the n-1th channel, all electrodes have completed scanning or sensing, and the touch position can be accurately identified.

[0097] It should also be noted that based on the principle of mutual capacitance screen, when a finger touches the capacitive screen, it affects the coupling between the two electrodes near the touch point, thereby changing the capacitance between the two electrodes. When detecting the mutual capacitance, the horizontal electrodes send out excitation signals in turn, and all the vertical electrodes receive the signals at the same time, so that the capacitance value of all the intersection points of the horizontal and vertical electrodes can be obtained, that is, the capacitance value of the two-dimensional plane of the entire touch screen.

[0098] Therefore, in the embodiment of the present application, since the conductive channel in the previous order in the scanning sequence has been scanned to determine whether the electrode on the conductive channel is touched, it is not necessary to receive the signal on the channel in the previous scanning sequence when scanning the subsequent channel. Therefore, in the embodiment of the present application, a sequence of scans can be completed by scanning each of the conductive channels except the last (nth) conductive channel. Compared with the scanning method of the prior art, the touch scanning time can be reduced.

[0099] The present application provides a touch display device, comprising any of the above touch display panels.

[0100] It should be noted that the touch panel in the embodiment of the present invention may be an organic light-emitting diode (OLED) display panel or a micro light-emitting diode (Micro LED) display panel. The display device may be any electronic device with a touch display function, such as a touch display screen, a mobile phone, a tablet computer, a laptop computer or a television.

[0101] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0102] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0103] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. Terms such as "setting" and the like appearing in this article can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0104] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and illustration, and are not intended to limit the present invention to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention.

Claims

1. A touch electrode structure, characterized in that: The method comprises a plurality of electrode arrays formed by electrode rows arranged along a first direction and electrode columns arranged along a second direction; wherein the electrode located at the lower left corner is a first reference electrode and a second reference electrode adjacent to the first reference electrode on the same electrode row, the first reference electrode is one of the first electrode and the second electrode, and the second reference electrode is the other of the first electrode and the second electrode; There is an interval between two adjacent electrode rows, and there is an interval between two adjacent electrode columns; The first electrodes and the second electrodes are arranged alternately on the same electrode row; the first electrodes and the second electrodes are arranged alternately on the same electrode column; The first reference electrode is electrically connected to an electrode located at the upper right corner of the reference electrode on the next electrode row in a first diagonal direction, and the second reference electrode is electrically connected to an electrode located at the upper left corner of the second reference electrode on the next electrode row in a second diagonal direction; the first diagonal direction and the second diagonal direction intersect; The electrodes of the same type as the first reference electrode on each electrode row are electrically connected to the electrodes of the same type in a first diagonal direction to form a plurality of first conductive lines; The electrodes of the same type as the second reference electrode on each electrode row are electrically connected to the electrodes of the same type in a second diagonal direction to form a plurality of second conductive lines; The first electrode on the outermost electrode column is electrically connected to the adjacent second electrode, so that the first conductive circuit where the first electrode is located and the second conductive circuit where the second electrode is located are connected to form a mixed conductive circuit, and the number of electrodes on each mixed conductive circuit is equal to the number of electrodes on each electrode column.

2. The touch electrode structure according to claim 1, characterized in that: The invention comprises a first electrode layer and a second electrode layer which are stacked, wherein the first electrode is arranged on the first electrode layer, and the second electrode is arranged on the second electrode layer.

3. The touch electrode structure according to claim 2, characterized in that: The first electrodes are connected to each other via a first connecting line, and the first connecting line is located on the first electrode layer; The second electrodes are connected to each other via a second connecting line, and the second connecting line is located on the second electrode layer.

4. The touch electrode structure according to claim 1, characterized in that: The first electrode and the second electrode are electrically connected through a first via hole.

5. The touch electrode structure according to claim 1, characterized in that: The electrode is in a rectangular shape, a first side of the electrode is parallel to a first direction, and a second side of the electrode is parallel to a second direction.

6. The touch electrode structure according to claim 1, characterized in that: The multiple electrodes form multiple independent conductive channels, the number of the conductive channels is the same as the number of electrodes on each electrode row; the number of electrodes on each conductive channel is the same as the number of electrodes on each electrode column, and the conductive channel is one of the first conductive circuit, the second conductive circuit and the mixed conductive circuit.

7. A touch display panel, characterized in that: It comprises a touch electrode structure as described in any one of claims 1 to 6 and a driving device for driving the touch electrode, wherein the driving device is arranged on one side of an electrode row, and the driving device is connected to the electrodes of the outermost electrode row through multiple signal lines, wherein one signal line corresponds to one of the electrodes on the outermost electrode row, and each signal line is electrically connected to a conductive channel where the electrode is located through the electrode; and the conductive channel is electrically connected to a first conductive circuit where the electrode is located, a second conductive circuit where the electrode is located, or a mixed conductive circuit where the electrode is located.

8. The touch display panel according to claim 7, characterized in that: It comprises a display area and a frame area, the touch electrode structure is located in the display area, and the driving device is located in the frame area.

9. A touch display device, characterized in that: It comprises a touch display panel as described in any one of claims 7-8.

10. A method for driving a touch electrode, characterized in that: Used to drive the touch display panel as claimed in any one of claims 7 to 8, comprising n conductive channels, the method comprising: In the touch control phase, the first n-1 conductive channels are scanned in sequence according to a preset order; When scanning is performed through the signal line to the i-th conductive channel corresponding to the i-th signal line, a sensing signal is simultaneously received on the sensing channel, which is the i+1th to nth conductive channels, where i=(1, 2, ..., n-1).

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