Array substrate and touch display panel

Abstract

The invention discloses an array substrate and a touch display device.The array substrate comprises a plurality of scanning lines extending in the first direction and a plurality of touch electrodes distributed in an array mode, the touch electrodes comprise the first touch electrodes and the second touch electrodes which are adjacently arranged in the second direction, and the first direction intersects with the second direction; the first edge area of the first touch electrode is adjacent to the second edge area of the second touch electrode, and the multiple scanning lines corresponding to the first edge area and the second edge area are defined as a first scanning line set and a second scanning line set respectively. The opening duration of each scanning line in the first scanning line group comprises a first pre-charging duration A and a first charging duration B, the opening duration of each scanning line in the second scanning line group comprises a second pre-charging duration C and a second charging duration D, A is an integral multiple of B, C is an integral multiple of D, and 0 < = A / B < = 3; the second pre-charging duration C is the same as the first pre-charging duration A.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to an array substrate and a touch display panel. BACKGROUND

[0002] With the continuous progress of display technology, touch display panels have gradually spread in people's lives. At present, touch panels can be divided into external touch display panels, surface cover touch display panels and in-cell touch display panels according to the composition structure. The in-cell touch display panel refers to integrating the touch structure on the array substrate of the display panel, so as to make the display panel more thin and light.

[0003] The array substrate of the in-cell touch display panel includes a plurality of scan lines, a plurality of data lines and a plurality of touch electrodes arranged in an array. The plurality of scan lines and the plurality of data lines define a plurality of pixel regions, and each touch electrode covers a plurality of pixel regions. In the display stage, each touch electrode acts as a common electrode. Since the touch electrode covers a plurality of pixel regions, there is an overlapping region between each touch electrode and the plurality of scan lines, so that there is a coupling effect between the touch electrode and the scan line. In the scanning process of the scan line, the voltage on the touch electrode is affected by the coupling effect and fluctuates. If the affected touch electrode region is large, the fluctuation will cause the touch display panel to display horizontal lines in the area near the boundary of adjacent touch electrodes. SUMMARY

[0004] The purpose of the present application is to provide an array substrate and a touch display panel, which limits the pre-charge time length of the scan line of the edge region of each touch electrode, reduces the number of scan lines affecting the display effect of each first touch electrode, and improves the display effect of the touch display panel from the overall visual effect.

[0005] The present application provides an array substrate, which includes a plurality of scan lines and a plurality of touch electrodes arranged in an array. The plurality of scan lines extend along a first direction, and the plurality of touch electrodes include first touch electrodes and second touch electrodes arranged adjacent to each other along a second direction. The first direction intersects the second direction, a first edge region of the first touch electrode is adjacent to a second edge region of the second touch electrode, and a plurality of scan lines corresponding to the first edge region and the second edge region respectively define a first scan line group and a second scan line group. The turn-on time length of each scan line in the first scan line group includes a first pre-charge time length A and a first charge time length B, the turn-on time length of each scan line in the second scan line group includes a second pre-charge time length C and a second charge time length D, A is an integer multiple of B, C is an integer multiple of D, and 0≤A / B≤3; the second pre-charge time length C is the same as the first pre-charge time length A.

[0006] As an optional technical solution, the second charging duration D is the same as the first charging duration B.

[0007] As an optional technical solution, the array substrate further comprises a gate driving circuit electrically connected with the plurality of scan lines, and the gate driving circuit is configured to provide a gate driving signal to the plurality of scan lines.

[0008] As an optional technical solution, the first charging duration B is 1H, and the first pre-charging duration A is 0-3H, and H represents a time unit.

[0009] As an optional technical solution, each scan line of the first scan line group and the second scan line group receives a high level in the opening period, and each scan line of the first scan line group and the second scan line group receives a low level in the closing period.

[0010] As an optional technical solution, the plurality of touch electrodes further comprises a third touch electrode, in the second direction, the first touch electrode, the second touch electrode, and the third touch electrode are sequentially arranged adjacent to each other, a third edge region of the second touch electrode is adjacent to a fourth edge region of the third touch electrode, and a plurality of scan lines corresponding to the third edge region and the fourth edge region are defined as a third scan line group and a fourth scan line group, respectively, an opening duration of each scan line in the third scan line group comprises a third pre-charging duration E and a third charging duration F, an opening duration of each scan line in the fourth scan line group comprises a fourth pre-charging duration G and a fourth charging duration H, E is an integer multiple of F, G is an integer multiple of H, and 0≤E / F≤3; the fourth pre-charging duration G is the same as the third pre-charging duration E.

[0011] As an optional technical solution, the fourth charging duration H is equal to the third charging duration F.

[0012] As an optional technical solution, the array substrate further comprises a plurality of touch wires, the plurality of touch wires extend along the second direction, and each touch electrode is electrically connected with one of the plurality of touch wires.

[0013] As an optional technical solution, the array substrate further comprises a plurality of data lines, the plurality of data lines extend along the second direction, and the plurality of touch wires and the plurality of data lines are arranged in the same layer.

[0014] The application further provides a touch display panel comprising the array substrate.

[0015] The array substrate and touch display panel of the present invention, by limiting the first pre-charge time A and the first charging time B of the scan lines corresponding to the edge region of the first touch electrode, such that 0≤A / B≤3, control the pre-charge time of each scan line, thereby reducing the number of scan lines that affect the display effect of the edge region of the first touch electrode. Furthermore, the pre-charge time of each scan line corresponding to the second edge region is the same as the first pre-charge time, thus limiting the area range of horizontal stripe display, thereby visually improving the overall display effect of the touch display panel. Attached Figure Description

[0016] Figure 1 This is a partial schematic diagram of the array substrate of the present invention;

[0017] Figure 2 This is a waveform diagram of an embodiment of the first scan line group and the second scan line group of the present invention;

[0018] Figure 3 This is a waveform diagram of another embodiment of the first scan line group and the second scan line group of the present invention. Detailed Implementation

[0019] To provide a further understanding of the purpose, structure, features and functions of the present invention, detailed descriptions are provided below with reference to embodiments.

[0020] This invention proposes an array substrate comprising multiple scan lines and an array of touch electrodes. This invention also provides a touch display panel comprising the aforementioned array substrate. Figure 1 This is a partial schematic diagram of the array substrate of the present invention, as shown below. Figure 1 As shown, the multiple scan lines extend along the first direction F1, and the multiple touch electrodes include a first touch electrode 10 and a second touch electrode 20 arranged adjacent to each other along the second direction F2. The first direction F1 intersects the second direction F2. In this embodiment, the first direction F1 and the second direction F2 are perpendicular. The first edge region 11 of the first touch electrode 10 ( Figure 1 (indicated by a dashed box) and the second edge region 21 of the second touch electrode 20 ( Figure 1 (Indicated by dashed boxes) Adjacent to each other, the multiple scan lines corresponding to the first edge region 11 and the second edge region 21 are respectively defined as the first scan line group 12 and the second scan line group 22. The activation duration of each scan line in the first scan line group 12 includes the first pre-charge duration A and the first charging duration B. The activation duration of each scan line in the second scan line group 22 includes the second pre-charge duration C and the second charging duration D. A is an integer multiple of B, C is an integer multiple of D, and 0≤A / B≤3. The second pre-charge duration C is the same as the first pre-charge duration A.

[0021] In one embodiment, when the ratio of the first pre-charge time A to the first charging time B is 0, it indicates that the turn-on time of each scan line in the first scan line group 12 only includes the actual charging phase, and does not include the pre-charge phase.

[0022] In the array substrate of the present application, by limiting the first pre-charge time A and the first charging time B of the scan line corresponding to the edge region of the first touch electrode, making 0≤A / B≤3, the pre-charge time of each scan line is controlled, the number of scan lines that fluctuate the display effect of the edge region of the first touch electrode is reduced, further, the pre-charge time of each scan line corresponding to the second edge region is the same as the first pre-charge time, in this way, the area range of horizontal stripe display is limited, so as to visually improve the overall display effect of the touch display panel.

[0023] In one embodiment, the second charging time D is the same as the first charging time B. Further, the first pre-charge time A is the same as the second pre-charge time C, at this time, the total charging time of each scan line corresponding to the first edge region 11 and the total charging time of each scan line corresponding to the second edge region 21 are the same.

[0024] The array substrate includes a display area and a frame region surrounding the display area, the aforementioned each scan line and touch electrode are arranged in the display area, the array substrate further includes a gate driving circuit (not shown), the gate driving circuit is connected with the plurality of scan lines and is used for providing a gate driving signal to the plurality of scan lines, the gate driving circuit is usually arranged in the frame region of the array substrate, which can reduce the cross interference with the pixel driving line in the display area, and improve the stability of signal transmission.

[0025] In one embodiment, each scan line of the first scan line group 12 and the second scan line group 22 receives a high level in the turn-on period, and makes the switch of each pixel unit corresponding to the scan line open, so that each pixel unit (specifically, the pixel electrode of each pixel unit receives a data signal via the corresponding data line) receives a data signal, and each scan line of the first scan line group 12 and the second scan line group 22 receives a low level in the turn-off period, and makes the switch of each pixel unit corresponding to the scan line close.

[0026] In one embodiment, the gate driving circuit is a 4-phase gate driving circuit, the first charging time B is 1H, and the first pre-charge time A is 0-3H, H represents a unit of time. Figure 2 The waveform diagram of one embodiment of the first scan line group 12 and the second scan line group 22 of the present application is as follows, Figure 2As shown, the first pre-charge time A of each scan line in the first scan line group 12 is 3H, and the first charging time B is 1H. Meanwhile, the second charging time D is the same as the first charging time B, and the first pre-charge time A is the same as the second pre-charge time C, so that the second pre-charge time C of each scan line in the second scan line group 22 is 3H, and the second charging time D is 1H. In actual operation, the size of the touch electrode in the display area is designed according to actual product requirements, so the number of scan lines passed by touch electrodes of different sizes is not necessarily the same. In this embodiment, the first scan line group 12 and the second scan line group 22 each include 8 scan lines as an example for detailed description. The first scan line group 12 corresponding to the first edge region 11 of the first touch electrode 10 includes 8 scan lines from top to bottom, which are G n-7 , G n-6 , G n-5 , G n-4 , G n-3 , G n-2 , G n-1 , and G n . Correspondingly, the second scan line group 22 corresponding to the second edge region 21 of the second touch electrode 20 also includes 8 scan lines from top to bottom, which are G n+1 , G n+2 , G n+3 , G n+4 , G n+5 , G n+6 , G n+7 , and G n+8 . The timing waveform is shown in Figure 2 . The voltage of the first scan line G n-7 rises to open, and the corresponding row of pixels (defined as the first row of pixels) starts to be charged. At the 4th H time, the voltage of the scan line G n-7 falls to close, and the charging of the first row of pixels is completed. The voltage of the scan line G n-6 rises to open at the 2nd H time and falls to close at the 5th H time, wherein the corresponding row of pixels (defined as the second row of pixels) corresponding to the scan line G n-6 is pre-charged from the 2nd H to the 4th H. The subsequent scan lines are cycled to complete the charging of each row of pixels in the screen.

[0027] Continuing to refer to Figure 2 , the first scan line G n-7 is closed at the 5th H, and the fifth scan line G n-3 is opened at this time. The coupling effect of the first scan line G n-7 and the first touch electrode 10 and the coupling effect of the fifth scan line G n-3 and the first touch electrode 10 can cancel each other out. In the 5th to 8th scan lines G n-3 , G n-2G n-1 and G n When closed, the corresponding open scan lines are the 1st to 4th scan lines G corresponding to the second touch electrode 20. n+1 G n+2 G n+3 and G n+4 That is, the 5th to 8th scan lines G corresponding to the first touch electrode 10 n-3 G n-2 G n-1 and G n When closed, no other scan lines corresponding to the first touch electrode 10 are open, causing a difference in the coupling voltage on the touch electrode. In this embodiment, by limiting the first pre-charge duration A to 3H, the number of scan lines that affect the display effect of the first touch electrode 10 is controlled to 4, thereby improving the overall visual effect of the touch display panel.

[0028] Figure 3 This is a waveform diagram of another embodiment of the first scan line group 12 and the second scan line group 22 of the present invention, as shown below. Figure 3 As shown, the first pre-charge duration A of each scan line in the first scan line group 12 is 0H (that is, the on-time of each scan line in the first scan line group 12 only includes the charging time, not the pre-charge time), and the first charging time B is 1H. Simultaneously, the second pre-charge duration C of each scan line in the second scan line group 22 is 0H (that is, the on-time of each scan line in the second scan line group 22 only includes the charging time, not the pre-charge time), and the second charging time D is 1H. Similar to the aforementioned embodiment, in this embodiment, the first scan line group 12 and the second scan line group 22 each contain 8 scan lines as an example for detailed explanation. Figure 3 As shown, the first scan line G n-7 After the voltage rises and the process is initiated, charging begins on the corresponding row of pixels (defined as the first row of pixels). At the end of time 1H, scan line G... n-7 Voltage reduction shuts down the system, and the first row of pixels has finished charging. The second scan line G... n-6 The voltage increases at the beginning of the 2nd hour to turn on and decreases at the end of the 2nd hour to turn off, where, with scan line G... n-6 The corresponding pixel in that row (defined as the second row pixel) is charged within the 2H period, excluding the pre-charging time. Subsequent scan lines use this cycle to charge all the pixels in each row of the screen.

[0029] Continue to refer to Figure 3 The first scan line G n-7 The scan is turned off at the end of H1, at which point the second scan line G... n-6 Open, first scan line G n-7 Coupling with the first touch electrode 10 and the second scan line Gn-6 The coupling effect of the first touch electrode 10 can be mutually offset. When the first touch electrode 10 is passed through the 8th scan line G n When the first touch electrode 10 is turned off, the corresponding open scan line is the 1st scan line G n+1 That is, the 8th scan line G n When the first touch electrode 10 is turned off, there is no corresponding scan line open, so that the coupling voltage on the touch electrode will be different. In this embodiment, by limiting the first pre-charge time A to 0H, the number of scan lines that fluctuate the display effect of the first touch electrode 10 is controlled to 1, thereby significantly reducing the horizontal stripe display defect from the overall visual effect.

[0030] In an embodiment, the plurality of touch electrodes further includes a third touch electrode (not shown), in the second direction F2, the first touch electrode 10, the second touch electrode 20, and the third touch electrode are sequentially arranged adjacent to each other, that is, the third touch electrode is arranged on the side of the second touch electrode 22 away from the first touch electrode 12, the third edge region (not shown) of the second touch electrode 20 is adjacent to the fourth edge region of the third touch electrode, and the plurality of scan lines corresponding to the third edge region and the fourth edge region are defined as the third scan line group and the fourth scan line group, respectively. The opening time of each scan line in the third scan line group includes a third pre-charge time E and a third charge time F, the opening time of each scan line in the fourth scan line group includes a fourth pre-charge time G and a fourth charge time H, E is an integer multiple of F, G is an integer multiple of H, and 0≤E / F≤3; the fourth pre-charge time G is the same as the third pre-charge time E. In actual operation, the fourth charge time H can be equal to the third charge time F.

[0031] The array substrate further includes a plurality of touch wires and a plurality of data lines, the plurality of touch wires extend along the second direction F2, and each touch electrode is electrically connected to one of the plurality of touch wires. The plurality of data lines also extend along the second direction F2, and the plurality of touch wires and the plurality of data lines are arranged in the same layer.

[0032] The array substrate and the touch display panel of the present application can effectively control the charging time of each scan line by controlling the pre-charge time and the charge time of the scan line of the edge region of the touch electrode, and further, the pre-charge time of the scan line corresponding to each edge region can be the same, so as to reduce the number of scan lines that fluctuate the display effect of the edge region of each touch electrode, limit the area range of horizontal stripe display, and thereby improve the display effect of the touch display panel from the overall visual effect.

[0033] Although the invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the invention and should not be construed as limiting the invention. The scale in the schematic drawings does not represent the actual proportions of the components, in order to clearly describe the required parts.

[0034] The present invention has been described in the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. Conversely, any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. An array substrate, comprising a plurality of scan lines and a plurality of touch electrodes arranged in an array, the plurality of scan lines extending along a first direction, characterized in that, the plurality of touch electrodes comprises a first touch electrode and a second touch electrode arranged adjacent to each other along a second direction, the first direction intersects the second direction, a first edge region of the first touch electrode is adjacent to a second edge region of the second touch electrode, a plurality of scan lines corresponding to the first edge region and the second edge region respectively define a first scan line group and a second scan line group, a turn-on time length of each scan line in the first scan line group comprises a first pre-charge time length A and a first charge time length B, a turn-on time length of each scan line in the second scan line group comprises a second pre-charge time length C and a second charge time length D, A is an integer multiple of B, C is an integer multiple of D, and 0≤A / B≤3; the second pre-charge time length C is the same as the first pre-charge time length A.

2. The array substrate of claim 1, wherein, the second charge time length D is the same as the first charge time length B.

3. The array substrate of claim 1, wherein, the array substrate further comprises a gate driving circuit electrically connected to the plurality of scan lines, the gate driving circuit is configured to provide a gate driving signal to the plurality of scan lines.

4. The array substrate of claim 3, wherein, the first charge time length B is 1H, and the first pre-charge time length A is 0-3H, H represents a unit of time.

5. The array substrate of claim 1, wherein, each scan line in the first scan line group and the second scan line group receives a high level during a turn-on period, and each scan line in the first scan line group and the second scan line group receives a low level during a turn-off period.

6. The array substrate of claim 1, wherein, the plurality of touch electrodes further comprises a third touch electrode, in the second direction, the first touch electrode, the second touch electrode, and the third touch electrode are sequentially arranged adjacent to each other, a third edge region of the second touch electrode is adjacent to a fourth edge region of the third touch electrode, a plurality of scan lines corresponding to the third edge region and the fourth edge region respectively define a third scan line group and a fourth scan line group, a turn-on time length of each scan line in the third scan line group comprises a third pre-charge time length E and a third charge time length F, a turn-on time length of each scan line in the fourth scan line group comprises a fourth pre-charge time length G and a fourth charge time length H, E is an integer multiple of F, G is an integer multiple of H, and 0≤E / F≤3; the fourth pre-charge time length G is the same as the third pre-charge time length E.

7. The array substrate of claim 6, wherein, the fourth charge time length H is equal to the third charge time length F.

8. The array substrate of claim 1, wherein, the array substrate further comprises a plurality of touch wires, the plurality of touch wires extend along the second direction, each touch electrode is electrically connected to one of the plurality of touch wires.

9. The array substrate of claim 8, wherein, the array substrate further comprises a plurality of data lines, the plurality of data lines extend along the second direction, the plurality of touch wires and the plurality of data lines are arranged in the same layer. 10.A touch display panel, characterized in that, it comprises the array substrate according to any one of claims 1-9.

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