Touch display panel and touch module

Abstract

The utility model relates to a touch display panel which comprises a substrate, a driving layer, a light-emitting layer and a packaging layer, the driving layer, the light-emitting layer and the packaging layer are sequentially stacked on the substrate, a touch layer is arranged on the packaging layer, a first touch channel extending in the first direction and a second touch channel extending in the second direction are arranged on the touch layer, and the first direction and the second direction are arranged in a crossed mode; the touch control comprises a touch control area and a non-touch control area located on the periphery of the touch control area, and the touch control area comprises a central area and a touch control edge area located on the periphery of the central area; the first touch channel comprises a plurality of first sub-touch channels located in the central area and a plurality of second sub-touch channels located in the touch edge area, and the width of the first sub-touch channels is larger than that of the second sub-touch channels; the second touch channel comprises a plurality of third sub-touch channels located in the central area and a plurality of fourth sub-touch channels located in the touch edge area, and the width of the third sub-touch channels is larger than that of the fourth sub-touch channels. The utility model further relates to a touch module.

Description

Technical Field

[0001] The present disclosure relates to the technical field of display product manufacturing, and in particular to a touch display panel and a touch module. Background Art

[0002] For edge position touch channels, especially the outermost touch channels, since only one side of the left or right or top and bottom has periodically arranged touch channels, the touch IC's differential or other noise reduction methods are less effective than those within the AA area when processing edge position signals. At the same time, during coordinate calculation, only one side of the touch electrode is used to calculate the coordinate weight of the reported point, resulting in reduced writing accuracy of the pen tip at the edge position, and even problems of broken or flying lines on some display screens. Utility Model Content

[0003] In order to solve the above technical problems, the present disclosure provides a touch display panel and a touch module to solve the problem of low touch accuracy in the touch edge area.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of the present disclosure is as follows: a touch display panel comprising a substrate, a driving layer, a light-emitting layer, and an encapsulation layer sequentially stacked on the substrate, a touch layer disposed on the encapsulation layer, and a first touch channel extending along a first direction and a second touch channel extending along a second direction, wherein the first direction and the second direction are intersecting each other;

[0005] The touch layer includes a touch area and a non-touch area located on the periphery of the touch area, and the touch area includes a central area and a touch edge area located on the periphery of the central area;

[0006] The first touch channel includes a plurality of first touch sub-channels located in the central area and a plurality of second touch sub-channels located in the touch edge area, and the width of the first touch sub-channels is greater than the width of the second touch sub-channels;

[0007] The second touch channel includes a plurality of third sub-touch channels located in the central area and a plurality of fourth sub-touch channels located in the touch edge area, and a width of the third sub-touch channel is greater than a width of the fourth sub-touch channel.

[0008] Optionally, the width of the second sub-touch channel is 1 / 2, 1 / 3 or 1 / 4 of the width of the first sub-touch channel;

[0009] The width of the fourth sub-touch channel is 1 / 2, 1 / 3 or 1 / 4 of the width of the third sub-touch channel.

[0010] Optionally, the sum of the widths of all the second sub-channels is n times the width of the first sub-touch channel;

[0011] The sum of the widths of all the fourth sub-channels is n times the width of the third sub-touch channel;

[0012] Wherein, n is a positive integer.

[0013] Optionally, the width of the first sub-touch channel is 4.5-6 mm, and the width of the second sub-touch channel is 1-3 mm;

[0014] The width of the third sub-touch channel is 4.5-6 mm, and the width of the fourth sub-touch channel is 1-3 mm.

[0015] Optionally, the first touch channel includes a plurality of first touch electrodes, and the second touch channel includes a plurality of second touch electrodes;

[0016] The central area includes multiple first touch repeating units, and the touch edge area includes multiple second touch repeating units. The first touch repeating unit includes M1 first touch electrodes and N1 second touch electrodes. The second touch repeating unit includes M2 first touch electrodes and N2 second touch electrodes, where M1 is m times M2, and N1 is m times N2. M1, M2, N1, and N2 are all positive integers, and m is a positive integer greater than 1.

[0017] Optionally, the touch edge area includes a first sub-touch edge area located on opposite sides of the central area in the first direction, and a second sub-touch edge area located on opposite sides of the central area in the second direction. The adjacent first sub-touch edge area and the second sub-touch edge area include a third touch repeating unit in the overlapping area, and the third touch repeating unit includes M3 first touch electrodes and N3 second touch electrodes, wherein M2 is m times M3, and N2 is m times N3, wherein M3 and N3 are both positive integers, and m is a positive integer greater than 1.

[0018] Optionally, in the first direction, a plurality of first touch signal lines are provided on at least one side of the non-touch area located at the touch area, and in the second direction, a plurality of second touch signal lines are provided on at least one side of the non-touch area located at the touch area;

[0019] At least one end of each of the first touch channels in its extending direction is connected to the corresponding first touch signal line, and the first touch signal line includes a first sub-touch signal line connected to the first sub-touch channel and a second sub-touch channel connected to the second sub-touch channel;

[0020] At least one end of each second touch channel in its extension direction is connected to a second touch signal line, and the second touch signal line includes a third sub-touch signal line connected to the third sub-touch channel and a fourth sub-touch signal line connected to the fourth sub-touch channel.

[0021] Optionally, the first touch channel is a sensing electrode channel, and the touch display panel further includes a multiplexing circuit, and the multiplexing circuit includes a first switching circuit and a second switching circuit;

[0022] The first switch circuit includes a plurality of first switch transistors, and the plurality of first switch transistors are arranged in a one-to-one correspondence with the plurality of second sub-touch signal lines;

[0023] The second switch circuit includes a plurality of second switch transistors, and each of the second switch transistors is connected to at least two of the second sub-touch signal lines.

[0024] Optionally, a first selection control unit is further included, configured to select the first switch circuit or the second switch circuit to operate according to the signal strength of the second sub-touch signal line.

[0025] Optionally, a signal processing unit is further included, configured to sum and process the signals of the plurality of second touch sub-channels.

[0026] Optionally, a second selection control unit is also included, which is used to select independent processing of the signal of the second sub-touch channel in the active pen touch mode, and select the second switching circuit to operate in the finger touch mode, or select the summation of the signals of multiple second sub-touch channels.

[0027] An embodiment of the present disclosure provides a touch module including the above-mentioned touch display panel.

[0028] The beneficial effects of the present disclosure are as follows: the touch display panel provided in the present disclosure includes a first touch channel and a second touch channel arranged in an intersecting manner, the first touch channel includes a first sub-touch channel located in a touch center area and a second sub-touch channel located in the touch edge area, the width of the first sub-touch channel is greater than the width of the second sub-touch channel, the second touch channel includes a third sub-touch channel located in the touch center area and a fourth sub-touch channel located in the touch edge area, the width of the third sub-touch channel is greater than the width of the fourth sub-touch channel, the signal-to-noise ratio of the touch channel position of the active pen in the touch edge area is reduced, and the number of touch channels in the touch edge area is increased, thereby improving the resolution accuracy of the touch chip for the coordinates of the touch edge area, and further improving the touch accuracy and handwriting pen stroke accuracy in the touch edge area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram showing a touch display panel in an embodiment of the present disclosure;

[0030] Figure 2 A schematic diagram showing a touch display panel in an embodiment of the present disclosure;

[0031] Figure 3 A schematic diagram showing a first touch-sensitive repeating unit;

[0032] Figure 4 a schematic diagram showing a second touch-sensitive repeating unit;

[0033] Figure 5 a schematic diagram showing a second touch-sensitive repeating unit;

[0034] Figure 6 a schematic diagram showing a third touch-sensitive repeating unit;

[0035] Figure 7 A schematic diagram showing a touch display panel in an embodiment of the present disclosure;

[0036] Figure 8 A schematic diagram showing a touch display panel in an embodiment of the present disclosure;

[0037] Figure 9 A schematic diagram showing a first touch-sensitive repeating unit;

[0038] Figure 10 a schematic diagram showing a second touch-sensitive repeating unit;

[0039] Figure 11 a schematic diagram showing a second touch-sensitive repeating unit;

[0040] Figure 12 a schematic diagram showing a third touch-sensitive repeating unit;

[0041] Figure 13 a schematic diagram showing a multiplexing circuit;

[0042] Figure 14 A schematic diagram showing a touch display panel;

[0043] Figure 15 Schematic diagram showing a block diagram of the connections through the first selection control unit and the multiplexing circuit. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0046] As used in the embodiments of the present disclosure, the terms "parallel," "perpendicular," and "identical" include the strict sense of "parallel," "perpendicular," and "identical," as well as "approximately parallel," "approximately perpendicular," and "approximately identical" with respect to a certain tolerance, which, taking into account the tolerances associated with the measurement of a particular quantity (e.g., limitations of the measurement system), means within an acceptable range of deviation for a particular value as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the stated value.

[0047] In related art, a touch display panel includes a first touch channel and a second touch channel arranged in an intersecting manner. The touch area includes a touch center area and a touch edge area. The width of the first touch channel in the touch center area is the same as the width of the first touch channel in the touch edge area. In a direction perpendicular to the extension direction of the first touch channel, the touch edge area includes a first side edge area and a second side edge area, each of which has only one first touch channel. Similarly, the width of the second touch channel in the touch center area is the same as the width of the second touch channel in the touch edge area. In a direction perpendicular to the extension direction of the second touch channel, the touch edge area includes a third side edge area and a fourth side edge area, each of which has only one second touch channel. As a result, when the IC processes edge position signals, the effect of differential or other noise reduction methods is less than that within the AA area. At the same time, when calculating coordinates, only one electrode on one side is used to calculate the coordinate weight of the reported point, resulting in reduced writing accuracy of the pen tip at the edge position and even broken or flying lines on some display screens.

[0048] refer to Figures 1-14 To address the above-mentioned problem, this embodiment provides a touch display panel, comprising a substrate 300, a driving layer 301, a light-emitting layer 302, and an encapsulation layer 303 sequentially stacked on the substrate 300, a touch layer 304 being provided on a side of the encapsulation layer 303 away from the substrate, the touch layer 304 being provided with a first touch channel 1 extending along a first direction and a second touch channel 2 extending along a second direction, the first direction and the second direction being arranged intersecting each other;

[0049] The touch layer 304 includes a touch area and a non-touch area located outside the touch area, wherein the touch area includes a touch center area 101 and a touch edge area 102;

[0050] The first touch channel 1 includes a plurality of first sub-touch channels 11 located in the touch center area 101 and a plurality of second sub-touch channels 12 located in the touch edge area 102 , wherein the width of the first sub-touch channels 11 is greater than the width of the second sub-touch channels 12 ;

[0051] The second touch channel 2 includes a plurality of third sub-touch channels 21 located in the touch center area 101 and a plurality of fourth sub-touch channels 22 located in the touch edge area 102 . The width of the third sub-touch channels 21 is greater than that of the fourth sub-touch channels 22 .

[0052] By adopting the above solution, the width of the second sub-touch channel 12 located in the touch edge area 102 is reduced relative to the first sub-touch channel 11 located in the touch center area 101, and the width of the fourth sub-touch channel 22 located in the touch edge area 102 is reduced relative to the third sub-touch channel 21 located in the touch center area 101. Compared with the related art, the number of the second sub-touch channels 12 and the number of the fourth sub-touch channels 22 located in the touch edge area 102 are increased, the capacitive load of a single touch channel is reduced, the impact of display noise is reduced, the resolution of the sensor at the edge position is improved, and higher stylus writing accuracy is achieved.

[0053] When the touch display panel is assembled with the display panel, the touch area corresponds to the display area of ​​the display panel. By adopting the above solution, there is no need to expand the size of the touch area, so that the area of ​​the touch area is larger than the area of ​​the display area, thereby improving the touch accuracy of the touch edge area 102 and realizing a narrow frame setting of a display device with a touch function.

[0054] It should be noted that the dimension of the first touch channel 1 in its extending direction is its length, and the dimension of the first touch channel 1 in a direction perpendicular to the extending direction of the first touch channel 1 is its width. Similarly, the dimension of the second touch channel 2 in its extending direction is its length, and the dimension of the second touch channel 2 in a direction perpendicular to the extending direction of the second touch channel 2 is its width.

[0055] For example, in order to achieve a width of the first sub-touch channel 11 greater than the width of the second sub-channel, the width of the second sub-touch channel 12 located in the touch edge area 102 can be directly reduced, and one second sub-touch channel 12 located in the touch edge area 102 can be changed into at least two second sub-touch channels 12.

[0056] Exemplarily, in order to achieve that the width of the first sub-touch channel 11 is greater than the width of the second sub-channel, the width of the second sub-touch channel 12 located in the touch edge area 102 can be directly reduced to increase the number of second sub-touch channels 12 located in the touch edge area 102 while increasing the width of the first sub-touch channel 11 located in the touch center area 101.

[0057] It should be noted that each of the first touch channels 1 is connected to at least one touch line, and the number of second sub-touch channels 12 located in the touch edge area 102 is increased, and the number of touch lines connected to the second sub-touch channels 12 is correspondingly increased. At the same time, the width of the first sub-touch channel 11 located in the touch center area 101 is increased, which can reduce the number of first sub-touch channels 11 located in the touch center area 101, and correspondingly reduce the number of touch lines connected to the first sub-touch channels 11. This can offset the increase in the number of touch lines caused by the increase in the number of second sub-touch channels 12 in the touch edge area 102. In this way, for the touch chip, there is no need to change the original setting of the touch chip.

[0058] In an exemplary embodiment, the width of the first sub-touch channel 11 is 4.5-6 mm, and the width of the second sub-touch channel 12 is 1-3 mm, but the present invention is not limited thereto.

[0059] For example, in order to achieve a width of the third sub-touch channel 21 greater than the width of the second sub-channel, the width of the fourth sub-touch channel 22 located in the touch edge area 102 can be directly reduced, and one fourth sub-touch channel 22 located in the touch edge area 102 can be changed into at least two fourth sub-touch channels 22.

[0060] Exemplarily, in order to achieve a width of the third sub-touch channel 21 greater than the width of the second sub-channel, the width of the fourth sub-touch channel 22 located in the touch edge area 102 can also be directly reduced to increase the number of fourth sub-touch channels 22 located in the touch edge area 102 while increasing the width of the third sub-touch channel 21 located in the touch center area 101.

[0061] It should be noted that each of the first touch channels 1 is connected to at least one touch line, and the number of fourth sub-touch channels 22 located in the touch edge area 102 is increased, and the number of touch lines connected to the fourth sub-touch channels 22 is correspondingly increased. At the same time, the width of the third sub-touch channel 21 located in the touch center area 101 is increased, which can reduce the number of third sub-touch channels 21 located in the touch center area 101, and correspondingly reduce the number of touch lines connected to the third sub-touch channels 21. This can offset the increase in the number of touch lines caused by the increase in the number of fourth sub-touch channels 22 in the touch edge area 102. In this way, for the touch chip, there is no need to change the original setting of the touch chip.

[0062] In an exemplary embodiment, the width of the third sub-touch channel 21 is 4.5-6 mm, and the width of the fourth sub-touch channel 22 is 1-3 mm, but the present invention is not limited thereto.

[0063] In some embodiments, the width of the first sub-touch channel 11 is equal to the width of the third sub-touch channel 21 , and the width of the second sub-touch channel 12 is equal to the width of the fourth sub-touch channel 22 .

[0064] In an exemplary embodiment, the width of the second sub-touch channel 12 is 1 / 2, 1 / 3 or 1 / 4 of the first sub-touch channel 11;

[0065] The width of the fourth sub-touch channel 22 is 1 / 2, 1 / 3 or 1 / 4 of the width of the third sub-touch channel 21 .

[0066] Figures 1-6 It indicates that the width of the second sub-touch channel 12 is 1 / 2 of the first sub-touch channel 11 ; and the width of the fourth sub-touch channel 22 is 1 / 2 of the third sub-touch channel 21 . Figure 7-12 It indicates that the width of the second sub-touch channel 12 is 1 / 3 of the first sub-touch channel 11 ; and the width of the fourth sub-touch channel 22 is 1 / 3 of the third sub-touch channel 21 .

[0067] In an exemplary embodiment, the sum of the widths of all the second sub-channels is n times the width of the first sub-touch channel 11;

[0068] The sum of the widths of all the fourth sub-channels is n times the width of the third sub-touch channel 21 ;

[0069] Wherein, n is a positive integer.

[0070] In an exemplary embodiment, n is 1, 2, or 3, but is not limited thereto.

[0071] By reducing the width of the second sub-touch channel 12 and the fourth sub-touch channel 22, the number of second sub-touch channels 12 and the fourth sub-touch channels 22 located in the touch edge region 102 is increased, improving the touch accuracy of active pen touch. However, this reduces signal strength, which is detrimental to finger touch. Using this solution, the touch signal strength in the touch edge region 102 can be increased by shorting electrodes or performing signal summing. This also ensures that the mutual capacitance data in the touch edge region 102 is kept consistent with the capacitance parameters of the internal mutual capacitance nodes to the greatest extent possible, reducing the complexity of the finger point reporting algorithm. For example, when n is 1, the signals of all second sub-touch channels 12 located in the touch edge region 102 can be summed.

[0072] In an exemplary embodiment, the first touch channel 1 includes a plurality of first touch electrodes 100 , and the second touch channel 2 includes a plurality of second touch electrodes 200 ;

[0073] The touch center area 101 includes multiple first touch repeating units, and the touch edge area 102 includes multiple second touch repeating units. The first touch repeating unit includes M1 first touch electrodes 100 and N1 second touch electrodes 200. The second touch repeating unit includes M2 first touch electrodes 100 and N2 second touch electrodes 200, wherein M1 is m times M2, and N1 is m times N2. M1, M2, N1, and N2 are all positive integers, and m is a positive integer greater than 1.

[0074] The first touch electrode 100 is triangular in shape, with two first touch electrodes 100 forming a complete square first electrode block. Adjacent first electrode blocks in the first direction are connected by a connecting line. Similarly, the second touch electrode 200 is triangular in shape, with two second touch electrodes 200 forming a complete square second electrode block. Adjacent second electrode blocks in the second direction are connected by a connecting line. It should be noted that the shapes of the first touch electrode 100 and the second touch electrode 200 are not limited to triangular; for example, they can also be semicircular.

[0075] In some embodiments, the width of the second sub-touch channel 12 is 1 / 2 of the width of the first sub-touch channel 11, the number of the first touch electrodes 100 in the first touch repeating unit is twice the number of the first touch electrodes 100 in the second touch repeating unit, M1 is twice M2, and N1 is twice N2. Figure 1 and Figure 2 .

[0076] In some embodiments, the width of the second sub-touch channel 12 is 1 / 3 of the width of the first sub-touch channel 11, the number of the first touch electrodes 100 in the first touch repeating unit is 3 times the number of the first touch electrodes 100 in the second touch repeating unit, M1 is 3 times M2, and N1 is 3 times N2. Figure 7 and Figure 8 .

[0077] In an exemplary embodiment, the touch edge area 102 includes a first sub-touch edge area located on opposite sides of the touch center area 101 in the first direction, and a second sub-touch edge area located on opposite sides of the touch center area 101 in the second direction. The overlapping area (i.e., the corner area 1001) of the adjacent first sub-touch edge area 102 and the second sub-touch edge area 102 includes a third touch repeating unit, and the third touch repeating unit includes M3 first touch electrodes 100 and N3 second touch electrodes 200, wherein M2 is m times M3, and N2 is m times N3, wherein M3 and N3 are both positive integers, and m is a positive integer greater than 1.

[0078] In some embodiments, the width of the second sub-touch channel 12 is 1 / 2 of the width of the first sub-touch channel 11, the number of the first touch electrodes 100 in the second touch repeating unit is twice the number of the first touch electrodes 100 in the third touch repeating unit, M2 is twice the number of M3, and N2 is twice the number of N3. Figure 3 It is a schematic diagram of the first touch repeating unit. Figure 4 Schematic diagram showing a second touch repeating unit in sub-edge regions located on opposite sides of the touch center region in the touch edge region in the first direction, Figure 5 Schematic diagram showing a second touch repeating unit in sub-edge regions located on opposite sides of the touch center region in the touch edge region in the second direction, Figure 6 Schematic diagram of the third touch-sensitive repeating unit is shown.

[0079] In some embodiments, the width of the second sub-touch channel 12 is 1 / 3 of the width of the first sub-touch channel 11, the number of the first touch electrodes 100 in the second touch repeating unit is three times the number of the first touch electrodes 100 in the third touch repeating unit, M2 is three times the number of M3, and N2 is three times the number of N3. Figure 9 Schematic diagram showing a second touch repeating unit in sub-edge regions located on opposite sides of the touch center region in the touch edge region in the first direction, Figure 10 Schematic diagram showing a second touch repeating unit in sub-edge regions located on opposite sides of the touch center region in the touch edge region in the second direction, Figure 11 Schematic diagram of the third touch-sensitive repeating unit is shown.

[0080] In an exemplary embodiment, at least one end of the first touch channel 1 in its extension direction is connected to a first touch signal line, and the first touch signal line includes a first sub-touch signal line connected to the first sub-touch channel 11 and a second sub-touch channel 12 connected to the second sub-touch channel 12;

[0081] At least one end of the second touch channel 2 in its extending direction is connected to a second touch signal line, and the second touch signal line includes a third sub-touch signal line connected to the third sub-touch channel 21 and a fourth sub-touch signal line connected to the fourth sub-touch channel 22 .

[0082] refer to Figure 13 and Figure 15 In an exemplary embodiment, the first touch channel 1 is a sensing electrode channel, and the touch display panel further includes a multiplexing circuit, and the multiplexing circuit includes a first switch circuit 402 and a second switch circuit 403;

[0083] The first switch circuit 402 includes a plurality of first switch transistors, and the plurality of first switch transistors are arranged in a one-to-one correspondence with the plurality of second sub-touch signal lines;

[0084] The second switch circuit 403 includes a plurality of second switch transistors, and each of the second switch transistors is connected to at least two of the second sub-touch signal lines.

[0085] By adopting the above scheme, the signals of the multiple second sub-touch channels 12 located in the touch edge area 102 can be independently received and processed through the first switching circuit 402. When the first signal G1 is applied to the multiplexing circuit, the first switching transistors T1 and T2 are turned on, and the signals of the second sub-touch channels can be independently received. Alternatively, the signals of the multiple second sub-touch channels 12 located in the touch edge area 102 can be received and processed together through the second switching circuit 403, and different touch modes can be switched. When the second signal G2 is applied to the multiplexing circuit, the second switching transistors T3 and T4 are turned on, but the second switching transistors T3 and T4 are short-circuited together, and the signals of the multiple second sub-touch channels can be received together.

[0086] In an exemplary embodiment, the touch display panel further includes a first selection control unit 401 for selecting whether the first switch circuit 402 or the second switch circuit 403 is to be operated according to the signal strength of the second sub-touch signal line.

[0087] When the signal of the second sub-touch signal line is weak, the second switching circuit can be selected to receive the signals of multiple second sub-touch channels 12 together to increase the touch signal strength. When the signal of the second sub-touch signal line is strong enough, the second switching circuit can be selected to receive the signals of multiple second sub-touch channels 12 together, or the first switching circuit can be selected to independently receive and process the signals of multiple second sub-touch channels 12.

[0088] In an exemplary embodiment, the touch display panel further includes a signal processing unit 500 for summing the signals of the plurality of second touch sub-channels 12 (i.e., superimposing the signals of the plurality of second touch sub-channels 12). In other words, the summing of the signals of the plurality of second touch sub-channels 12 is achieved using a software algorithm without changing the circuit structure.

[0089] In an exemplary embodiment, the touch display panel also includes a second selection control unit that selects different signal processing methods in different touch modes. For example, in the active pen touch mode, multiple second sub-touch channels work independently; in the finger touch mode, multiple second sub-touch channels are short-circuited, or the signals of multiple second sub-touch channels are summed.

[0090] Specifically, in an embodiment in which a multiplexing circuit is set up, the second selection control unit is used to select the first switching circuit to operate in the active pen touch mode, and independently receive and process the signals of the multiple second sub-touch channels 12 located in the touch edge area 102; and in the finger touch mode, select the second switching circuit to operate, and receive and process the signals of the multiple second sub-touch channels 12 located in the touch edge area 102 together; in an embodiment in which a multiplexing circuit is not set up, the second selection control unit is used to select to independently process the signals of the multiple second sub-touch channels in the active pen touch mode, and select to add and process the signals of the multiple second sub-touch channels in the finger touch mode.

[0091] In the above embodiment, the plurality of second touch sub-channels are short-circuited or driven synchronously, while the plurality of fourth touch sub-channels receive and process signals independently without short-circuiting or signal summing. This approach can enhance the resolution of the signals from the plurality of second touch sub-channels. In some embodiments, the plurality of fourth touch sub-channels can be short-circuited or driven synchronously, while the plurality of second touch sub-channels receive and process signals independently without short-circuiting or signal summing. This approach can enhance the resolution of the signals from the plurality of fourth touch sub-channels. In some embodiments, the signal processing methods for the plurality of second touch sub-channels and the plurality of fourth touch sub-channels can be the same, for example, the plurality of second touch sub-channels are short-circuited or driven synchronously, while the plurality of fourth touch sub-channels are short-circuited or driven synchronously. Alternatively, the plurality of second touch sub-channels receive and process signals independently, while the plurality of fourth touch sub-channels receive and process signals independently. The signal processing methods for the plurality of second touch sub-channels and the plurality of fourth touch sub-channels can be selected based on actual needs.

[0092] In an exemplary embodiment, the first touch channel 1 includes a plurality of first touch electrodes 100, and the second touch channel 2 includes a plurality of second touch electrodes 200. The first touch channel 1 and the second touch channel 2 can be arranged in the same layer or in different layers. Exemplarily, the touch layer 304 includes a first metal layer 3012 and a second metal layer 3011. The first metal layer 3012 includes the first touch channel 1 and the second touch channel 2 arranged in an intersecting manner. The second metal layer 3011 includes a plurality of bridging electrodes, each of which is used to connect the plurality of first touch electrodes 100 in the first touch channel 1, or the plurality of second touch electrodes 200 in the second touch channel 2.

[0093] Exemplarily, the encapsulation layer 303 includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked together. The first and second inorganic encapsulation layers can be formed by vapor deposition (e.g., chemical vapor deposition (CVD)), and the organic encapsulation layer can be formed by inkjet printing (IJP).

[0094] Exemplarily, the light emitting layer 302 includes an anode layer (Anode), an organic light emitting layer (EL), and a cathode layer (Cathode) sequentially arranged in a direction away from the substrate 300 .

[0095] A pixel definition layer (PDL) is provided between the anode layer and the organic light-emitting layer. The pixel definition layer can be formed of an organic material such as polyimide (PI), polyamide, benzocyclobutene (BCB), acrylic resin or phenolic resin, or an inorganic material such as SiNx.

[0096] An embodiment of the present disclosure provides a touch module including the above-mentioned touch display panel.

[0097] The display device can be any product or component with a display function, such as an LCD TV, an LCD display, an OLED display, a digital photo frame, a mobile phone, or a tablet computer. The display device also includes a flexible circuit board, a printed circuit board, and a backplane.

[0098] There are a few points to note:

[0099] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.

[0100] (2) For the sake of clarity, the thickness of layers or regions in the drawings used to describe the embodiments of the present disclosure are exaggerated or reduced, i.e., these drawings are not drawn to scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element or intervening elements may be present.

[0101] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.

[0102] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A touch display panel, characterized in that: The touch panel comprises a substrate, a driving layer, a light-emitting layer and an encapsulation layer stacked on the substrate in sequence, wherein a touch layer is provided on the encapsulation layer, and the touch layer is provided with a first touch channel extending along a first direction and a second touch channel extending along a second direction, wherein the first direction and the second direction are arranged to intersect; The touch layer includes a touch area and a non-touch area located on the periphery of the touch area, and the touch area includes a central area and a touch edge area located on the periphery of the central area; The first touch channel includes a plurality of first touch sub-channels located in the central area and a plurality of second touch sub-channels located in the touch edge area, and the width of the first touch sub-channels is greater than the width of the second touch sub-channels; The second touch channel includes a plurality of third sub-touch channels located in the central area and a plurality of fourth sub-touch channels located in the touch edge area, and a width of the third sub-touch channel is greater than a width of the fourth sub-touch channel.

2. The touch display panel according to claim 1, wherein: The width of the second sub-touch channel is 1 / 2, 1 / 3 or 1 / 4 of the first sub-touch channel; The width of the fourth sub-touch channel is 1 / 2, 1 / 3 or 1 / 4 of the width of the third sub-touch channel.

3. The touch display panel according to claim 1, wherein: The sum of the widths of all the second touch sub-channels is n times the width of the first touch sub-channel; The sum of the widths of all the fourth touch sub-channels is n times the width of the third touch sub-channel; Wherein, n is a positive integer.

4. The touch display panel according to claim 1, wherein: The width of the first sub-touch channel is 4.5-6 mm, and the width of the second sub-touch channel is 1-3 mm; The width of the third sub-touch channel is 4.5-6 mm, and the width of the fourth sub-touch channel is 1-3 mm.

5. The touch display panel according to claim 3, wherein: The first touch channel includes a plurality of first touch electrodes, and the second touch channel includes a plurality of second touch electrodes; The central area includes multiple first touch repeating units, and the touch edge area includes multiple second touch repeating units. The first touch repeating unit includes M1 first touch electrodes and N1 second touch electrodes. The second touch repeating unit includes M2 first touch electrodes and N2 second touch electrodes, where M1 is m times M2, and N1 is m times N2. M1, M2, N1, and N2 are all positive integers, and m is a positive integer greater than 1.

6. The touch display panel according to claim 5, wherein: The touch edge area includes a first sub-touch edge area located on opposite sides of the central area in the first direction, and a second sub-touch edge area located on opposite sides of the central area in the second direction. The overlapping area of ​​the adjacent first sub-touch edge area and the second sub-touch edge area includes a third touch repeating unit, and the third touch repeating unit includes M3 first touch electrodes and N3 second touch electrodes, wherein M2 is m times M3, and N2 is m times N3, wherein M3 and N3 are both positive integers, and m is a positive integer greater than 1.

7. The touch display panel according to claim 1, wherein: In the first direction, a plurality of first touch signal lines are provided on at least one side of the non-touch area located at the touch area, and in the second direction, a plurality of second touch signal lines are provided on at least one side of the non-touch area located at the touch area; At least one end of each of the first touch channels in its extending direction is connected to the corresponding first touch signal line, and the first touch signal line includes a first sub-touch signal line connected to the first sub-touch channel and a second sub-touch signal line connected to the second sub-touch channel; At least one end of each second touch channel in its extension direction is connected to a second touch signal line, and the second touch signal line includes a third sub-touch signal line connected to the third sub-touch channel and a fourth sub-touch signal line connected to the fourth sub-touch channel.

8. The touch display panel according to claim 7, wherein: The first touch channel is a sensing electrode channel, and the touch display panel further includes a multiplexing circuit, and the multiplexing circuit includes a first switching circuit and a second switching circuit; The first switch circuit includes a plurality of first switch transistors, and the plurality of first switch transistors are arranged in a one-to-one correspondence with the plurality of second sub-touch signal lines; The second switch circuit includes a plurality of second switch transistors, and each of the second switch transistors is connected to at least two of the second sub-touch signal lines.

9. The touch display panel according to claim 8, wherein: The system further includes a first selection control unit configured to select whether the first switch circuit or the second switch circuit is to be operated according to the signal strength of the second sub-touch signal line.

10. The touch display panel according to claim 7, wherein: The system further includes a signal processing unit configured to sum and process the signals of the plurality of second touch sub-channels.

11. The touch display panel according to claim 8, wherein: It also includes a second selection control unit, which is used to select independent processing of the signal of the second sub-touch channel in the active pen touch mode, and select the second switch circuit to operate in the finger touch mode, or select the summation of the signals of multiple second sub-touch channels.

12. A touch module, characterized in that: The touch display panel comprises the touch display panel according to any one of claims 1 to 11.

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