Array substrate, embedded touch display panel and display device

Abstract

The utility model discloses an array substrate, an embedded touch control display panel, a display device and an array substrate, a common electrode layer and a plurality of touch control wires are arranged on the array substrate, the common electrode layer comprises a plurality of common electrode blocks arranged in an array mode, the common electrode blocks are electrically connected with the corresponding touch control wires, and the touch control wires are electrically connected with the common electrode blocks. One end of each touch wire is electrically connected with the corresponding common electrode block, the other end of each touch wire is electrically connected with the touch chip, the resistance of all the touch wires from the touch chip to the corresponding common electrode block is the same, and the line width of the touch wires is uniform. The resistance of all the touch wires from the touch chip to the common electrode blocks corresponding to the touch wires is the same, so that the phenomenon that the resistance of the touch wires connected with different common electrode blocks participating in signal transmission is different, and black cross grains appear at the bottom is avoided; and the line width of the touch control wire is uniform, so that the signal transmission effect is prevented from being influenced by different widths of different positions of the same touch control wire.

Description

Technical Field

[0001] The utility model relates to the technical field of display panels, and in particular to an array substrate, an embedded touch display panel, and a display device. Background Art

[0002] Liquid crystal display panels have the advantages of good image quality, small size, light weight, low driving voltage, low power consumption, no radiation and relatively low manufacturing cost, and they dominate the field of flat panel displays. With the rapid development of display technology, touch display panels have been widely accepted and used by people, such as smart phones and tablet computers. Touch display panels use embedded touch technology to combine touch panels and liquid crystal display panels into one, and embed the touch panel function into the liquid crystal display panel, so that the liquid crystal display panel has the functions of displaying and sensing touch input at the same time.

[0003] According to the different settings of the touch sensing layer in the display panel, the touch display panel is divided into add-on mode, in-cell and on-cell structures. The in-cell touch screen integrates the touch function into the display screen, which can effectively reduce the thickness of the entire display and simplify the production process, making the product thinner and lighter, and the production cost is lower, thus it is widely popular. At present, for the in-cell touch screen, the touch screen structure is usually set directly on the array substrate, mainly in the array substrate. Some structural components used to transmit display signals are reused as touch electrodes. The more common is to reuse the common electrode block as the touch electrode. Not only the scan lines and data lines need to be set on the array substrate, but also the touch wiring needs to be set, and then the common signal and touch signal are transmitted to the common electrode block through the touch wiring.

[0004] like Figures 1 to 3 The existing self-contained embedded touch display panel includes an array substrate 10, on which a plurality of common electrode blocks 11 and a plurality of touch lines 12 are provided. The common electrode blocks 11 are reused as touch electrodes to realize touch control. The plurality of common electrode blocks 11 are used to receive touch signals and common voltages in a time-sharing manner. When the common electrode blocks 11 are used for touch control, the common electrode blocks 11 are used to receive touch signals; when the common electrode blocks 11 are used as common electrodes, the common electrode blocks 11 are used to receive common voltages. The touch lines 12 are used to electrically connect the common electrode blocks 11 and the touch chip 100. There are two existing ways of routing the touch lines 12 on the array substrate 10:

[0005] For one of the Figure 1, each touch line 12 has the same length and extends from the far end of the touch chip 100 to be electrically connected to the touch chip 100, that is, each touch line 12 runs through the entire set of common electrode blocks 11, that is, each touch line 12 crosses the same number of common electrode blocks 11. This method is called a penetration method. However, only a section of each touch line 12 close to the touch chip 100 participates in signal transmission. For another method, please refer to Figure 3 In each column of common electrode blocks 11, the touch lines 12 electrically connected to each common electrode block 11 are of different lengths. Specifically, the touch lines 12 gradually shorten from left to right, that is, the number of common electrode blocks 11 crossed by the touch lines 12 gradually decreases from left to right. This method is called a non-penetrating method. In each column of common electrode blocks 11, the two types of touch line 12 routing methods have different lengths of actual signal transmission of the touch lines 12 electrically connected to each common electrode block 11, that is, there are differences in the resistance of the touch lines 12 involved in transmitting signals. Since the common electrode blocks 11 also serve as common electrodes, the common voltage uniformity on the common electrode blocks 11 is poor, and black horizontal stripes will appear at the bottom, resulting in poor display effects. Utility Model Content

[0006] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an array substrate and an embedded touch display panel and a display device to solve the problem in the prior art that different touch lines involved in transmitting signals have different resistances, resulting in the appearance of black horizontal stripes on the bottom.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] The utility model provides an array substrate, on which a common electrode layer and a plurality of touch lines are provided, the common electrode layer comprises a plurality of common electrode blocks arranged in an array, the common electrode blocks are electrically connected to the corresponding touch lines, one end of the touch lines is electrically connected to the corresponding common electrode block, the other end of the touch lines is electrically connected to a touch chip, the resistance of all the touch lines from the touch chip to the corresponding common electrode blocks is the same, and the line width of the same touch line is uniform.

[0009] Furthermore, all the touch lines have the same line width, and the touch lines include a first touch line and a second touch line. The first touch line and the second touch line have the same length from the touch chip to the corresponding common electrode block. The common electrode blocks in the first row are electrically connected to the corresponding first touch lines, and the common electrode blocks in the N+1th row are electrically connected to the corresponding second touch lines, where N is a positive integer greater than or equal to 1.

[0010] Further, the first touch line is a straight line structure, the second touch line includes a straight portion and a bent portion, the sum of the resistances of the straight portion and the bent portion is equal to the resistance of the first touch line, one end of the bent portion is electrically connected to the straight portion, and the other end of the bent portion is electrically connected to the corresponding common electrode block.

[0011] Furthermore, the sum of the lengths of the straight portion and the bent portion is equal to the length of the first touch wiring.

[0012] Furthermore, the length of the straight portion corresponding to the common electrode block in the N+1th row is greater than the length of the straight portion corresponding to the common electrode block in the N+2th row, the length of the bent portion corresponding to the common electrode block in the N+1th row is less than the length of the bent portion corresponding to the common electrode block in the N+2th row, and N is a positive integer greater than or equal to 1.

[0013] Furthermore, the length of the touch line electrically connected to the common electrode block in the Nth row is greater than the length of the touch line electrically connected to the common electrode block in the N+1th row, and the line width of the touch line electrically connected to the common electrode block in the Nth row is greater than the line width of the touch line electrically connected to the common electrode block in the N+1th row, and N is a positive integer greater than or equal to 1.

[0014] Furthermore, all the touch lines are straight line structures.

[0015] Furthermore, a plurality of pixel electrodes distributed in an array are provided on the array substrate, the pixel electrodes cooperate with the common electrode layer, and each of the common electrode blocks covers at least one sub-pixel.

[0016] The present application also provides an embedded touch display panel, comprising the array substrate as described above, a color film substrate arranged opposite to the array substrate, and a liquid crystal layer located between the array substrate and the color film substrate.

[0017] The present application also provides a display device, comprising the embedded touch display panel as described above.

[0018] The beneficial effect of the utility model is that: by electrically connecting one end of the touch wiring to the corresponding common electrode block and the other end of the touch wiring to the touch chip, the resistance of all touch wiring from the touch chip to the corresponding common electrode block is the same, so as to avoid the difference in resistance of touch wiring connected to different common electrode blocks participating in transmitting signals, thereby avoiding the appearance of black horizontal stripes at the bottom; and the line width of the touch wiring is uniform, so as to avoid the same touch wiring having different widths at different positions, that is, the same touch wiring having different resistances at different positions, thereby affecting the signal transmission effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the planar structure of an array substrate in the prior art;

[0020] Figure 2 yes Figure 1 Schematic diagram of capacitors on the array substrate;

[0021] Figure 3 It is a schematic diagram of the planar structure of an array substrate in the prior art;

[0022] Figure 4 It is a schematic diagram of the planar structure of the array substrate in the first embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the planar structure of the array substrate in the second embodiment of the present utility model;

[0024] Figure 6 It is a schematic diagram of the structure of the display device in the utility model when it is in a dark state;

[0025] Figure 7 It is a structural schematic diagram of the display device in the utility model when it is in a bright state. DETAILED DESCRIPTION

[0026] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation methods, structures, features and effects of the array substrate, embedded touch display panel and display device proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments:

[0027] [Example 1]

[0028] like Figure 4As shown, an array substrate provided by the first embodiment of the utility model, a common electrode layer and a plurality of touch lines 12 are provided on the array substrate 10, the common electrode layer includes a plurality of common electrode blocks 11 arranged in an array, the common electrode blocks 11 are electrically connected to the corresponding touch lines 12, that is, the common electrode blocks 11 can be reused as touch electrodes. One end of the touch line 12 is electrically connected to the corresponding common electrode block 11, and the other end of the touch line 12 is electrically connected to the touch chip 100, and the touch chip 100 applies a touch signal to the common electrode block 11 during the touch time period to realize the touch function. The resistance of all touch lines 12 from the touch chip 100 to the corresponding common electrode block 11 is the same, that is, for all touch lines 12, the resistance from the touch chip 100 to the corresponding common electrode block 11 is the same, so as to avoid the difference in resistance of the touch lines 12 connected to different common electrode blocks 11 in transmitting signals, and the appearance of black horizontal stripes at the bottom. The line width of the same touch trace 12 is uniform, that is, for the same touch trace 12, the line width of the touch trace 12 is the same from one end of the touch trace 12 to the other end of the touch trace 12, ensuring that the resistance of the touch trace 12 from one end of the touch trace 12 to the other end of the touch trace 12 is uniform, thereby improving the signal transmission effect.

[0029] Furthermore, all touch lines 12 have the same line width, and the touch lines 12 include a first touch line 121 and a second touch line 122. The lengths of the first touch lines 121 and the second touch lines 122 from the touch chip 100 to the corresponding common electrode blocks 11 are the same. The first row of common electrode blocks 11 are electrically connected to the corresponding first touch lines 121, and the N+1th row of common electrode blocks 11 are electrically connected to the corresponding second touch lines 122, where N is a positive integer greater than or equal to 1. That is, the touch lines 12 electrically connected to the first row of common electrode blocks 11 are all first touch lines 121, and the touch lines 12 electrically connected to the second row and subsequent rows of common electrode blocks 11 are all second touch lines 122.

[0030] In this embodiment, the first touch line 121 is a straight structure, and the second touch line 122 includes a straight portion 122a and a bent portion 122b. The sum of the resistances of the straight portion 122a and the bent portion 122b is equal to the resistance of the first touch line 121, one end of the bent portion 122b is electrically connected to the straight portion 122a, and the other end of the bent portion 122b is electrically connected to the corresponding common electrode block 11. The sum of the lengths of the straight portion 122a and the bent portion 122b is equal to the length of the first touch line 121, thereby ensuring that the resistances of all touch lines 12 from the touch chip 100 to the corresponding common electrode block 11 are the same. Of course, in other embodiments, the line widths of the touch lines 12 connecting different rows of common electrode blocks 11 may also be different, so that the sum of the lengths of the straight portion 122a and the bent portion 122b is not equal to the length of the first touch line 121.

[0031] Further, the length of the straight portion 122a corresponding to the common electrode block 11 in the N+1th row is greater than the length of the straight portion 122a corresponding to the common electrode block 11 in the N+2th row, and the length of the bent portion 122b corresponding to the common electrode block 11 in the N+1th row is less than the length of the bent portion 122b corresponding to the common electrode block 11 in the N+2th row, where N is a positive integer greater than or equal to 1. For example, the length of the straight portion 122a corresponding to the common electrode block 11 in the second row is greater than the length of the straight portion 122a corresponding to the common electrode block 11 in the third row, and the length of the bent portion 122b corresponding to the common electrode block 11 in the second row is less than the length of the bent portion 122b corresponding to the common electrode block 11 in the third row, thereby ensuring that the sum of the lengths of the straight portion 122a and the bent portion 122b of each first touch wiring 121 is equal to the length of the first touch wiring 121.

[0032] like Figures 1 to 3 In the prior art, it is assumed that the number of sub-pixels corresponding to one common electrode block 11 is 54*42, and the number of common electrode blocks 11 in the column direction is 6. The prior art is calculated as follows:

[0033] Common electrode block 11 at the far IC (touch chip) end: C1 = Cgcom*54*42, C2 = Cdcom*54*42, C3 = Ctpgate*42*(6-1), C4 = C5 = C6 = 0, C7 = (6-1)*42*Ctpcom; Rtotal = 6X.

[0034] Common electrode block 11 near the IC (touch chip): C1 = Cgcom*54*42, C2 = Cdcom*54*42, C3 = Ctpgate*42*(6-1), C4 = C5 = C6 = 0, C7 = (6-1)*42*Ctpcom; Rtotal = X.

[0035] Among them, C1 is the capacitance between the common electrode block 11 and the scan line, C2 is the capacitance between the common electrode block 11 and the data line, C3 is the capacitance between the touch line 12 and the scan line, C4 is the capacitance between the touch line 12 and the data line, C5 is the capacitance between two adjacent common electrode blocks 11 above and below, C6 is the capacitance between two adjacent common electrode blocks 11 left and right, and C7 is the capacitance between the common electrode block 11 and the touch line 12; Rtotal is the resistance of the part of the touch line 12 that participates in transmitting signals. It can be seen from the above that there is a 6-fold difference in the resistance of the touch line 12 corresponding to the common electrode block 11 at the far IC end and the near IC end, because the touch line 12 corresponding to the common electrode block 11 at the far IC end runs through 6 common electrode blocks 11.

[0036] For this application, it is assumed that the number of sub-pixels corresponding to one common electrode block 11 is 54*42, and the number of common electrode blocks 11 in the column direction is 6. This application calculates as follows:

[0037] Common electrode block 11 at the far IC (touch chip) end: C1 = Cgcom*54*42, C2 = Cdcom*54*42, C3 = Ctpgate*42*(6-1), C4 = C5 = C6 = 0, C7 = (6-1)*42*Ctpcom; Rtotal = 6X.

[0038] Common electrode block 11 near the IC (touch chip): C1 = Cgcom*54*42, C2 = Cdcom*54*42, C3 = Ctpgate*42*(6-1), C4 = C5 = C6 = 0, C7 = (6-1)*42*Ctpcom; Rtotal = 6X.

[0039] Among them, capacitors C1-C7 are the same as the prior art, and the resistance of the touch lines 12 corresponding to the common electrode blocks 11 at the far IC end and the near IC end are the same, so as to avoid the appearance of black horizontal stripes at the bottom due to the difference in resistance of the touch lines 12 connected to different common electrode blocks 11 participating in transmitting signals.

[0040] In this embodiment, a plurality of pixel electrodes 13 distributed in an array are provided on the array substrate 10, and the pixel electrodes 13 cooperate with the common electrode layer, and each common electrode block 11 covers at least one sub-pixel. A plurality of scanning lines (not shown) and a plurality of data lines (not shown) are mutually insulated and cross-defined on the array substrate 20 to form a plurality of pixel units, and a pixel electrode 13 and a thin film transistor (not shown) are provided in each pixel unit, and the pixel electrode 13 is electrically connected to the data line of the adjacent thin film transistor through the thin film transistor. Among them, the thin film transistor includes a gate, an active layer, a drain electrode and a source electrode, the gate electrode and the scanning line are located in the same layer and are electrically connected, the gate electrode and the active layer are separated by an insulating layer, the source electrode is electrically connected to the data line, and the drain electrode is electrically connected to the pixel electrode 13 through a contact hole. The common electrode block 11 and the pixel electrode 13 can be made of transparent conductive materials such as indium tin oxide (ITO) and indium zinc oxide (IZO). The touch line 12 can be made of metals such as copper (Cu), silver (Ag), chromium (Cr), molybdenum (Mo), aluminum (Al), titanium (Ti), manganese (Mn), nickel (Ni), etc., or a combination of the above metals such as Al / Mo, Cu / Mo, etc. The touch line 12 can be set in the same layer as the data line and parallel to each other.

[0041] Among them, the common electrode block 11 and the pixel electrode 13 are located in different layers and are insulated and isolated by an insulating layer. The common electrode block 11 can be located above or below the pixel electrode 13. Preferably, the common electrode block 11 is a planar electrode arranged on the entire surface, and the pixel electrode 13 is a block electrode arranged in an entire block in each pixel unit or a slit electrode with multiple electrode strips to form a fringe field switching mode (Fringe Field Switching, FFS). Of course, the pixel electrode 13 and the common electrode block 11 can also be located in the same layer, but the two are insulated and isolated from each other, and the pixel electrode 13 and the common electrode block 11 can each include multiple electrode strips, and the electrode strips of the pixel electrode 13 and the electrode strips of the common electrode block 11 are arranged alternately to form an in-plane switching mode (In-Plane Switching, IPS).

[0042] [Example 2]

[0043] Figure 5 Schematic diagram of the planar structure of the array substrate in the second embodiment of the present utility model. Figure 5 As shown, the array substrate provided in the second embodiment of the present invention is different from that in the first embodiment ( Figures 3 to 5 ) are substantially the same, except that, in this embodiment:

[0044] The length of the touch line 12 electrically connected to the common electrode block 11 in the Nth row is greater than the length of the touch line 12 electrically connected to the common electrode block 11 in the N+1th row, and the line width of the touch line 12 electrically connected to the common electrode block 11 in the Nth row is greater than the line width of the touch line 12 electrically connected to the common electrode block 11 in the N+1th row, where N is a positive integer greater than or equal to 1. For example, the length of the touch line 12 corresponding to the common electrode block 11 in the 1st row is greater than the length of the touch line 12 corresponding to the common electrode block 11 in the 2nd row, and the line width of the touch line 12 corresponding to the common electrode block 11 in the 1st row is greater than the line width of the touch line 12 corresponding to the common electrode block 11 in the 2nd row, that is, the longer the length of the touch line 12 is, the wider its line width is, but the line width of the same touch line 12 remains uniform. This ensures that the resistance of all touch lines 12 is the same, so as to avoid the appearance of black horizontal stripes at the bottom due to the difference in resistance of touch lines 12 connected to different common electrode blocks 11 in transmitting signals. The length of the touch line 12 refers to the length from the touch chip 100 to the corresponding common electrode block 11.

[0045] Furthermore, all touch traces 12 are straight structures. Since the resistance value of the resistor is inversely proportional to the cross-sectional area of ​​the conductor, and all touch traces 12 are made of the same metal layer and have the same thickness. Therefore, in this embodiment, the resistance of the longer touch trace 12 is reduced by increasing the line width of the longer touch trace 12; or the line width of the shorter touch trace 12 is reduced to increase the resistance of the shorter touch trace 12, so as to ensure that the resistance of the longer touch trace 12 is the same as the resistance of the shorter touch trace 12. Therefore, all touch traces 12 can be set as a straight structure to reduce the difficulty of the manufacturing process.

[0046] It should be understood by those skilled in the art that the rest of the structure and working principle of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0047] Figure 6 It is a schematic diagram of the cross-sectional structure of the display device in the utility model when it is in a dark state. Figure 7 Schematic diagram of the cross-sectional structure of the display device in the present utility model when in bright state. Figure 6 and Figure 7As shown, the present application also provides an embedded touch display panel, including the array substrate 10 as described above. The display panel includes a color filter substrate 20 arranged opposite to the array substrate 10 and a liquid crystal layer 30 located between the array substrate 10 and the color filter substrate 20, an upper polarizer 41 is provided on the color filter substrate 20, and a lower polarizer 42 is provided on the array substrate 10, and the light transmission axis of the upper polarizer 41 and the light transmission axis of the lower polarizer 42 are perpendicular to each other. Among them, the liquid crystal molecules in the liquid crystal layer 30 use positive liquid crystal molecules (liquid crystal molecules with positive dielectric anisotropy). In the initial state, the positive liquid crystal molecules are in a lying posture, and the alignment direction of the positive liquid crystal molecules close to the color filter substrate 20 is parallel to the alignment direction of the positive liquid crystal molecules close to the array substrate 10. It can be understood that the array substrate 10 and the color filter substrate 20 are also provided with an alignment layer in a layer facing the liquid crystal layer 30, so as to align the positive liquid crystal molecules in the liquid crystal layer 30.

[0048] In this embodiment, a black matrix 21 and a color resist layer 22 are provided on the color filter substrate 20, and the black matrix 21 corresponds to the scan line, the data line, the touch line 12, the thin film transistor and the peripheral non-display area, and the black matrix 21 separates the plurality of color resist layers 22. The color resist layer 22 includes color resist materials of red (R), green (G) and blue (B), and correspondingly forms sub-pixels of red (R), green (G) and blue (B).

[0049] like Figure 6 and Figure 7 As shown, the utility model further provides a display device, including the embedded touch display panel as described above and a backlight module 50. The backlight module 50 is located below the embedded touch display panel and is used to provide a backlight source for the display panel.

[0050] The backlight module 50 includes a backlight source 51 and an anti-peep layer 52, and the anti-peep layer 52 is used to narrow the range of the light emission angle. A brightness enhancement film 53 is also provided between the backlight source 51 and the anti-peep layer 52, and the brightness enhancement film 53 increases the brightness of the backlight module 50. Among them, the anti-peep layer 52 is equivalent to a miniature shutter structure, which can block light with a larger incident angle and allow light with a smaller incident angle to pass through, so that the angle range of light passing through the anti-peep layer 52 becomes smaller. The anti-peep layer 52 includes a plurality of parallel light-blocking walls and a light-transmitting hole located between two adjacent light-blocking walls, and light-absorbing materials are provided on both sides of the light-blocking walls. Of course, the backlight source 51 can also be a light-collecting backlight source, so there is no need to set the anti-peep layer 52, but the light-collecting backlight source is more expensive than the conventional backlight source.

[0051] The backlight module 50 can be an edge-type backlight module or a direct-type backlight module. Preferably, the backlight module 50 adopts a collimated backlight (CBL) mode, which can collect light and ensure the display effect.

[0052] In this document, the directional words such as up, down, left, right, front, and back are defined by the positions of the structures in the drawings and the positions of the structures relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second" used in this document are only used to distinguish names and are not used to limit quantity and order.

[0053] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to the technical contents disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An array substrate, characterized in that: The array substrate (10) is provided with a common electrode layer and a plurality of touch lines (12); the common electrode layer comprises a plurality of common electrode blocks (11) arranged in an array; the common electrode blocks (11) are electrically connected to the corresponding touch lines (12); one end of the touch line (12) is electrically connected to the corresponding common electrode block (11); the other end of the touch line (12) is electrically connected to the touch chip (100); the resistance of all the touch lines (12) from the touch chip (100) to the corresponding common electrode blocks (11) is the same, and the line width of the same touch line (12) is uniform.

2. The array substrate according to claim 1, characterized in that: All the touch lines (12) have the same line width, the touch lines (12) include a first touch line (121) and a second touch line (122), the first touch line (121) and the second touch line (122) have the same length from the touch chip (100) to the corresponding common electrode block (11), the first row of the common electrode blocks (11) are electrically connected to the corresponding first touch lines (121), and the N+1th row of the common electrode blocks (11) are electrically connected to the corresponding second touch lines (122), where N is a positive integer greater than or equal to 1.

3. The array substrate according to claim 2, characterized in that: The first touch-control wiring (121) is a straight structure, the second touch-control wiring (122) comprises a straight portion (122a) and a bent portion (122b), the sum of the resistances of the straight portion (122a) and the bent portion (122b) is equal to the resistance of the first touch-control wiring (121), one end of the bent portion (122b) is electrically connected to the straight portion (122a), and the other end of the bent portion (122b) is electrically connected to the corresponding common electrode block (11).

4. The array substrate according to claim 3, characterized in that: The sum of the lengths of the straight portion (122a) and the bent portion (122b) is equal to the length of the first touch-control trace (121).

5. The array substrate according to claim 4, characterized in that: The length of the straight portion (122a) corresponding to the common electrode block (11) in the N+1th row is greater than the length of the straight portion (122a) corresponding to the common electrode block (11) in the N+2th row, and the length of the bent portion (122b) corresponding to the common electrode block (11) in the N+1th row is less than the length of the bent portion (122b) corresponding to the common electrode block (11) in the N+2th row, and N is a positive integer greater than or equal to 1.

6. The array substrate according to claim 1, characterized in that: The length of the touch line (12) electrically connected to the common electrode block (11) in the Nth row is greater than the length of the touch line (12) electrically connected to the common electrode block (11) in the N+1th row, and the line width of the touch line (12) electrically connected to the common electrode block (11) in the Nth row is greater than the line width of the touch line (12) electrically connected to the common electrode block (11) in the N+1th row, where N is a positive integer greater than or equal to 1.

7. The array substrate according to claim 6, characterized in that: All the touch control wirings (12) are straight line structures.

8. The array substrate according to any one of claims 1 to 7, characterized in that: The array substrate (10) is provided with a plurality of pixel electrodes (13) distributed in an array, the pixel electrodes (13) cooperate with the common electrode layer, and each common electrode block (11) covers at least one sub-pixel.

9. An embedded touch display panel, characterized in that: It comprises an array substrate (10) as claimed in any one of claims 1 to 8, a color film substrate (20) arranged opposite to the array substrate (10), and a liquid crystal layer (30) located between the array substrate (10) and the color film substrate (20).

10. A display device, characterized in that: It comprises the embedded touch display panel as claimed in claim 9.

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