Touch panel

Abstract

The invention provides a touch panel, in the touch panel, a touch function layer comprises a plurality of first touch channels arranged in parallel, the first touch channels extend in a first direction and are divided into a plurality of first channel groups, each first channel group comprises at least two first touch channels, and the first touch channels are arranged in the first direction. And the first touch channels of each first channel group are connected in series. The first touch signal lines are located in the non-touch function area and correspond to the first touch channels respectively, the first touch patch cords are located in the non-touch function area and correspond to the first channel sets respectively, and the first touch patch cords are connected with the corresponding first channel sets. The multi-path distribution circuit comprises a plurality of first distribution units, the first touch signal lines are connected with the first touch signal patch cords through the first distribution units, and the first touch patch cords corresponding to the first channel group and the first touch signal lines corresponding to the first touch channels included in the first channel group are connected to the same first distribution unit. Therefore, the frame width of the touch panel can be reduced.

Description

Technical Field

[0001] The present disclosure relates to the field of touch control, and specifically, to a touch panel. Background Art

[0002] With the continuous development of display technology, users' desire for full-screen display of electronic products is increasing. As the functions of electronic products increase, the wiring pressure in the border area of electronic products also further increases. How to further compress the border size to achieve an extremely narrow border or even a borderless design while taking into account various functions of electronic products has become an urgent problem to be solved in this field. Summary of the Invention

[0003] In a first aspect of the present disclosure, a touch panel is provided. The touch panel includes a substrate, a touch control function layer, a plurality of first touch signal lines, a plurality of first touch transfer lines, and a multiplexing circuit located on the substrate. The substrate includes a touch control function area and a non-touch control function area. The touch control function layer is located in the touch control function area and includes a plurality of first touch channels arranged in parallel. The first touch channels extend along a first direction and are divided into a plurality of first channel groups. Each first channel group includes at least two first touch channels, and the first touch channels in each first channel group are connected in series with each other. The first touch signal lines are located in the non-touch control function area and correspond to the first touch channels respectively. The first touch transfer lines are located in the non-touch control function area and correspond to the first channel groups respectively. The first touch transfer lines are connected to the corresponding first channel groups. The multiplexing circuit includes a plurality of first distribution units. The first touch signal lines are connected to the first touch signal transfer lines through the first distribution units. The first touch transfer lines corresponding to the first channel groups and the first touch signal lines corresponding to the first touch channels included in the first channel groups are connected to the same first distribution unit.

[0004] In the above solution, by setting the multiplexing circuit, the number of signal lines directly connected to the touch channels can be reduced, thereby reducing the wiring pressure in the peripheral area of the touch control function area (where the first touch transfer lines are arranged), which is beneficial to reducing the border width of the touch panel.

[0005] In a specific embodiment of the first aspect of the present disclosure, the first distribution unit includes a first signal bus and a second signal bus. The first distribution unit includes a first transistor and a second transistor. The gate of the first transistor is connected to the first signal bus, the gate of the second transistor is connected to the second signal bus. The first poles of the first transistor and the second transistor are connected to different first touch signal lines, and the second poles of the first transistor and the second transistor are connected to the same first touch transfer line.

[0006] Optionally, the number of the first touch channels is greater than the number of the second touch channels.

[0007] In a specific implementation manner of the first aspect of the present disclosure, the non-touch functional area includes a wiring area, a bending area, and a circuit area. The wiring area surrounds the touch functional area. The bending area is located on the side of the wiring area away from the touch functional area, and the bending area is located between the touch functional area and the circuit area. The first touch signal line and the multiplexing circuit are both located in the circuit area. The first touch adapter line extends from the touch functional area through the wiring area and the bending area to the circuit area. In the embodiments of the present disclosure, the first touch signal adapter lines are arranged in the bending area, the first touch signal line is located outside the bending area, and the number of the first touch signal adapter lines is less than the number of the first touch signal lines. In this way, the wiring quantity in the bending area can be reduced to lower the requirements for the bending process, which is more conducive to the design of an extremely narrow border of the touch panel.

[0008] Optionally, the non-touch functional area further includes a bonding area, the bonding area is located on the side of the circuit area away from the bending area, and the first touch signal line extends into the bonding area.

[0009] Optionally, the touch panel further includes a dam, and the dam is located in the wiring area and surrounds the touch functional area.

[0010] In a specific implementation manner of the first aspect of the present disclosure, the touch functional layer includes 2N first touch channels. The Xth first touch channel and the (N - X + 1)th first touch channel are in the same first channel group. The (N + Y)th first touch channel and the (2N - Y + 1)th first touch channel are in the same first channel group, where N is a positive integer not less than 2, X is a natural number less than N, and Y is a positive integer less than 2N.

[0011] In another specific implementation manner of the first aspect of the present disclosure, the touch functional layer includes 4N first touch channels. The Xth first touch channel and the (X + N)th first touch channel are in the same first channel group. The (X + 2N)th first touch channel and the (X + 3N)th first touch channel are in the same first channel group, where N is a positive integer not less than 2, and X is a positive integer not greater than N.

[0012] In another specific implementation manner of the first aspect of the present disclosure, the first touch channels included in each first channel group are adjacent to each other.

[0013] In a specific embodiment of the first aspect of the present disclosure, the touch function layer includes a plurality of second touch channels arranged in parallel. The second touch channels extend along a second direction and are divided into a plurality of second channel groups. Each second channel group includes at least two second touch channels, and the second touch channels of each second channel group are connected in series with each other. The touch panel further includes a plurality of second touch signal lines and a plurality of second touch adapter lines. The second touch signal lines are located in the non-touch function area and correspond to the second touch channels respectively. The second touch adapter lines are located in the non-touch function area and correspond to the second channel groups respectively. The second touch adapter lines are connected to the corresponding second channel groups. The multi-way distribution circuit includes a plurality of second distribution units. The second touch signal lines are connected to the second touch signal adapter lines through the second distribution units. The second touch adapter lines corresponding to the second channel groups and the second touch signal lines corresponding to the second touch channels included in the second channel groups are connected to the same second distribution unit.

[0014] In a specific embodiment of the first aspect of the present disclosure, the second distribution unit includes a third signal bus and a fourth signal bus. The second distribution unit includes a third transistor and a fourth transistor. The gate of the third transistor is connected to the third signal bus, and the gate of the fourth transistor is connected to the fourth signal bus. The first poles of the third transistor and the fourth transistor are connected to different second touch signal lines, and the second poles of the third transistor and the fourth transistor are connected to the same second touch adapter line.

[0015] In a specific embodiment of the first aspect of the present disclosure, the touch function layer includes 2M second touch channels. The Xth second touch channel and the (M - X + 1)th second touch channel are in the same second channel group. The (M + Y)th second touch channel and the (2M - Y + 1)th second touch channel are in the same second channel group, where M is a positive integer not less than 2, X is a natural number less than M, and Y is a positive integer less than 2M.

[0016] In another specific embodiment of the first aspect of the present disclosure, the touch function layer includes 4M second touch channels. For the first to 2M second touch channels, the Xth second touch channel and the (X + M)th second touch channel are in the same second channel group. For the 2M + 1th to 4M second touch channels, the (X + 2M)th second touch channel and the (X + 3M)th second touch channel are in the same second channel group, where M is a positive integer not less than 2 and X is a positive integer not greater than M.

[0017] In another specific embodiment of the first aspect of the present disclosure, the second touch channels included in each second channel group are adjacent to each other.

[0018] In a specific embodiment of the first aspect of the present disclosure, the touch function layer includes a first touch electrode located in a first touch channel and a second touch electrode located in a second touch channel. The first touch electrode and the second touch electrode form a touch capacitance at the intersection of the first touch channel and the second touch channel.

[0019] Optionally, the first touch electrode includes a plurality of first electrode blocks and a first connection portion. The first electrode blocks are connected to each other through the first connection portion. The second touch electrode includes a plurality of second electrode blocks and a second connection portion. The second electrode blocks are connected to each other through the second connection portion. The first connection portion and the second connection portion cross each other, and the first electrode blocks and the second electrode blocks around each intersection form a touch capacitance.

[0020] Optionally, the first electrode blocks and the second electrode blocks are on the same layer, one of the first connection portion and the second connection portion is on the same layer as the first electrode blocks and the second electrode blocks, and the other of the first connection portion and the second connection portion is a conductive bridge.

[0021] Optionally, one of the first touch electrode and the second touch electrode is a driving electrode, and the other of the first touch electrode and the second touch electrode is a sensing electrode.

[0022] In a specific embodiment of the first aspect of the present disclosure, the substrate includes an array substrate and a display function layer located on the array substrate. The display function layer includes a plurality of light-emitting devices located in a touch function area. The array substrate includes a pixel driving circuit. The pixel driving circuit includes a plurality of control transistors. The active layer of the first transistor and / or the active layer of the second transistor are arranged on the same layer as at least part of the active layers of the control transistors. Description of the Drawings

[0023] Figure 1 Schematic plan view of a touch panel provided by an embodiment of the present disclosure.

[0024] Figure 2 For Figure 1 Enlarged view of a partial structure of the touch panel shown.

[0025] Figure 3 For Figure 1 Circuit diagram of a partial structure of a multiplexing circuit in the touch panel shown.

[0026] Figure 4 For Figure 1 Schematic diagram of the scanning timing of the touch panel shown.

[0027] Figure 5 For Figure 1 Schematic plan view of a partial area of the touch function layer of the touch panel shown.

[0028] Figure 6A ForFigure 5 Schematic diagram of the structure of a touch unit in the touch function layer of the touch panel shown

[0029] Figure 6B is Figure 6A Enlarged view of area S1 of the touch panel shown

[0030] Figure 6C is Figure 6B Cross-sectional view of a partial area of the touch panel shown

[0031] Figure 7 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0032] Figure 8 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0033] Figure 9 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0034] Figure 10 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0035] Figure 11 is Figure 10 Enlarged view of a partial structure of the touch panel shown

[0036] Figure 12 is Figure 10 Circuit diagram of a partial structure of the multiplexing circuit in the touch panel shown

[0037] Figure 13 is Figure 10 Schematic diagram of the scanning timing of the touch panel shown

[0038] Figure 14 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0039] Figure 15 Schematic plan view of a partial area of another touch panel provided by an embodiment of the present disclosure

[0040] Description of reference numerals:

[0041] 100 - Substrate; 101 - Touch function area (display area); 102 - Non - touch function area (non - display area); 103 - Wiring area; 104 - Bending area; 105 - Circuit area; 106 - Bonding area; 107 - Dam; 110 - Array substrate; 111 - Control transistor; 120 - Light - emitting device

[0042] 200 - Touch function layer; 201 - First touch channel; 202 - Second touch channel; 201A - First channel group; 202A - Second channel group; 210 - First touch electrode; 220 - Second touch electrode; 211 - First electrode block; 212 - First connection part; 221 - Second electrode block; 222 - Second connection part;

[0043] 311 - First touch signal line; 312 - First touch adapter line; 321 - Second touch signal line; 322 - Second touch adapter line;

[0044] 400 - Multiplexing circuit; 401 - First distribution unit; 402 - Second distribution unit; 411 - First signal bus; 412 - Second signal bus; 413 - Third signal bus; 414 - Fourth signal bus; 421 - First transistor; 422 - Second transistor; 423 - Third transistor; 424 - Fourth transistor;

[0045] 500 - Packaging structure; 510 - First packaging layer; 520 - Second packaging layer; 530 - Third packaging layer. Detailed implementation mode

[0046] Next, the technical solutions in the embodiments of this specification will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all the embodiments. Based on the embodiments in this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0047] At the border of the touch panel, signal lines need to be aggregated for connecting to external circuits. However, due to factors such as the increase in panel size and the improvement of touch accuracy, the number of signal lines needs to be increased synchronously, and the signal lines need to be lengthened. To reduce the additional impedance caused by the increase in signal line length, the width of the signal lines needs to be increased, which will further increase the wiring pressure at the border of the touch panel. In addition, if the number and size (such as width) of the wiring on the touch panel increase, it will lead to an increase in the size and bending pressure of the bending area, which will not only further increase the border size after bending but also increase the bending stress and reduce the panel reliability.

[0048] At least one embodiment of the present disclosure provides a touch panel to at least solve the above technical problems. The touch panel includes a substrate, a touch function layer, a plurality of first touch signal lines, a plurality of first touch adapter lines, and a multiplexing circuit located on the substrate. The substrate includes a touch function area and a non-touch function area. The touch function layer is located in the touch function area and includes a plurality of first touch channels arranged in parallel. The first touch channels extend in a first direction and are divided into a plurality of first channel groups. Each first channel group includes at least two first touch channels, and the first touch channels in each first channel group are connected in series with each other. The first touch signal lines are located in the non-touch function area and correspond to the first touch channels respectively. The first touch adapter lines are located in the non-touch function area and correspond to the first channel groups respectively. The first touch adapter lines are connected to the corresponding first channel groups. The multiplexing circuit includes a plurality of first distribution units. The first touch signal lines are connected to the first touch signal adapter lines through the first distribution units. The first touch adapter lines corresponding to the first channel groups and the first touch signal lines corresponding to the first touch channels included in the first channel groups are connected to the same first distribution unit. In this touch panel, by setting the multiplexing circuit, the number of touch adapter lines connected to the touch channels is less than the number of touch signal lines corresponding to the touch channels respectively. Thus, while ensuring the normal touch function of the touch panel, the number of signal lines (touch adapter lines) led out from the touch channels can be reduced, thereby reducing the wiring pressure in the peripheral area of the touch function area (where the first touch adapter lines are arranged, which can correspond to the lower border), and thus facilitating the reduction of the border width of the touch panel.

[0049] Next, the structure of the touch panel according to at least one embodiment of the present disclosure will be described in detail with reference to the accompanying drawings. In addition, in these drawings, a spatial rectangular coordinate system is established with the substrate in the touch panel as the reference to intuitively present the positional relationship of each component in the touch panel. In this spatial rectangular coordinate system, the X-axis and the Y-axis are parallel to the plane where the substrate is located, and the Z-axis is perpendicular to the plane where the substrate is located.

[0050] As Figures 1 to 3 shown, the touch panel includes a touch function area 101 and a non-touch function area 102. Some signal lines in the non-touch function area 102 can be arranged in the touch function area 101, so that the non-touch function area 102 can be designed as a single-sided border (such as the lower border).

[0051] The physical structure of the touch panel may include a substrate 100, a touch function layer 200, a plurality of first touch signal lines 311, a plurality of first touch adapter lines 312, and a multiplexing circuit 400 located on the substrate 100.

[0052] The touch function layer 200 is located in the touch function area 101 and includes a plurality of first touch channels 201 arranged in parallel. The first touch channels 201 extend along a first direction and are divided into a plurality of first channel groups 201A. Each first channel group 201A includes at least two first touch channels 201, and the first touch channels 201 in each first channel group 201A are connected in series with each other. The first touch signal lines 311 are located in the non-touch function area 102 and correspond to the first touch channels 201 respectively. The first touch adapter lines 312 are located in the non-touch function area 102 and correspond to the first channel groups 201A respectively. The first touch adapter lines 312 are connected to the corresponding first channel groups 201A. The multi-way distribution circuit 400 includes a plurality of first distribution units 401. The first touch signal lines 311 are connected to the first touch signal adapter lines through the first distribution units 401. The first touch adapter lines 312 corresponding to the first channel groups 201A and the first touch signal lines 311 corresponding to the first touch channels 201 included in the first channel groups 201A are connected to the same first distribution unit 401. By providing the multi-way distribution circuit 400, the number of signal lines directly connected to the touch channels can be reduced, thereby reducing the wiring pressure in the peripheral area (where the first touch adapter lines 312 are arranged) of the touch function area 101, which is beneficial to reducing the frame width of the touch panel.

[0053] Exemplarily, as Figures 1 to 3 shown, the first channel group 201A includes two first touch channels 201 connected in series. The number of the first touch signal lines 311 is equal to the number of the first touch channels 201, and the number of the first touch adapter lines 312 is equal to the number of the first channel groups 201A. Thus, the number of the first touch adapter lines 312 is 1 / 2 of the number of the first touch signal lines 311. In this way, the wiring pressure in the area where the first touch adapter lines 312 are located can be greatly reduced.

[0054] It should be noted that for the touch function of the touch panel, each first touch channel 201 represents a horizontal channel (extending along the first direction) for determining the touch position. In the embodiments of the present disclosure, even if at least two first touch channels 201 are connected in series, the number of first touch signal lines 311 equal to the number of first touch channels 201 is required to match the algorithm of the touch chip, so as to determine on which specific first touch channel 201 the touch position is located. That is, although the first touch channels 201 are connected in series, the actual number of channels for determining the touch operation does not decrease. Specifically, taking two rows of first touch channels 201 connected in series as an example, these two rows of first touch channels 201 are at different distances from the touch chip (this distance can be distinguished based on the impedance magnitude of the entire circuit to the touch chip). Based on this, the touch chip can determine whether the touch position is on the row of first touch channels 201 that is farther away or the other row of first touch channels 201 that is closer by detecting the impedance magnitude. To improve the accuracy of the determination, the diameter (such as the width) of the connection line for connecting these two rows of first touch channels 201 can be reduced or the distance of the connection line can be lengthened by means of winding, etc., so as to increase the difference degree of the impedance magnitude between these two rows of first touch channels 201 and the touch chip. In addition, during actual touch operations, the signals of other rows of first touch channels 201 (set as reference touch channels) adjacent to any row of first touch channels 201 (set as the target touch channel) can also be detected to determine whether the target touch channel corresponds to the touch position. For example, if the target touch channel far from the touch chip is touched, then there is a high probability that the reference touch channel adjacent to this target touch channel is also touched, and this reference touch channel is not adjacent to or is far from the target touch channel close to the touch chip. Then, after the signal feedback of this touch detection is sent back to the touch chip, the touch chip can calculate that the touch position occurs at the location of the target touch channel far from the touch chip.

[0055] Next, the structure of the first distribution unit 401 of the multi-way distribution circuit 400 will be described to explain the principle of relieving the wiring pressure of the touch panel by setting the multi-way distribution circuit 400.

[0056] In at least one embodiment of the present disclosure, as Figures 1 to 3As shown in the figure, the first distribution unit 401 of the multi-way distribution circuit 400 includes a first signal bus 411 and a second signal bus 412. The first distribution unit 401 includes a first transistor 421 and a second transistor 422. The gate of the first transistor 421 is connected to the first signal bus 411, and the gate of the second transistor 422 is connected to the second signal bus 412. The first poles of the first transistor 421 and the second transistor 422 are connected to different first touch signal lines 311, and the second poles of the first transistor 421 and the second transistor 422 are connected to the same first touch transfer line 312. For example, taking the touch panel including 40 first touch channels 201 as an example, the first touch channels 201 are arranged in sequence as N1 to N40. The first touch transfer line 312 corresponding to the first touch signal line 311 (denoted as 311-N1) corresponding to the N1st first touch channel 201 and the first touch signal line 311 (denoted as 311-N20) corresponding to the N20th first touch channel 201 is denoted as 312-X1. In this way, there are 20 first touch transfer lines 312 from serial number 312-X1 to 312-X20. The scanning timing of the first distribution unit 401 can be as Figure 4 As shown in the figure, for the first touch channel 201, when the first signal bus 411 is turned on, the N1st to N10th first touch channels 201 receive signals in sequence, and at the same time, the N21st to N30th first touch channels 201 receive signals in sequence. Similarly, when the second signal bus 412 is turned on, the N20th to N11th first touch channels 201 receive signals in sequence, and the N40th to N31st first touch channels 201 receive signals in sequence. In this way, the scanning of all the first touch channels 201 can be completed.

[0057] In at least one embodiment of the present disclosure, as Figures 1 to 3 shown in the figure, the number of the first touch channels 201 is greater than the number of the second touch channels 202. For example, the touch panel has 40 first touch channels 201 and 16 second touch channels 202. In this way, compared with the number of signal lines corresponding to the second touch channels 202, the number of the first touch signal lines 311 corresponding to the first touch channels 201 is 40, and there is a greater wiring pressure. In this way, when the solution of the present disclosure is adopted, the wiring pressure can be improved to a greater extent.

[0058] In at least one embodiment of the present disclosure, as Figure 1As shown, the non-touch functional area 102 includes a wiring area 103, a bending area 104, and a circuit area 105. The wiring area 103 surrounds the touch functional area 101. The bending area 104 is located on the side of the wiring area 103 away from the touch functional area 101, and the bending area 104 is located between the touch functional area 101 and the circuit area 105. The first touch signal line 311 and the multi-way distribution circuit 400 are both located in the circuit area 105. The first touch adapter line 312 extends from the touch functional area 101 through the wiring area 103 and the bending area 104 to the circuit area. In an embodiment of the present disclosure, the first touch signal adapter lines are arranged in the bending area 104. The first touch signal line 311 is located outside the bending area 104, and the number of the first touch signal adapter lines is less than the number of the first touch signal lines 311. In this way, the wiring quantity in the bending area 104 can be reduced, the requirement for the bending process can be lowered, and thus it is more beneficial to the design of the extremely narrow border of the touch panel.

[0059] In at least one embodiment of the present disclosure, as Figure 1 shown, the non-touch functional area 102 further includes a bonding area 106. The bonding area 106 is located on the side of the circuit area 105 away from the bending area 104, and the first touch signal line 311 extends into the bonding area 106.

[0060] It should be noted that the bonding area 106 can be used to set a chip and / or a bonding terminal (or called a pad, etc.). The chip can be a display chip (which can be called a driving chip) or a touch chip. The bonding terminal can be used to connect to an external circuit (such as a flexible circuit board), etc. For example, chips and other components can also be arranged on the flexible circuit board.

[0061] In at least one embodiment of the present disclosure, as Figure 1 、 Figure 5 、 Figures 6A to 6C shown, the touch functional layer 200 includes a first touch electrode 210 located in the first touch channel 201 and a second touch electrode 220 located in the second touch channel 202. The first touch electrode 210 and the second touch electrode 220 form a touch capacitor at the intersection of the first touch channel 201 and the second touch channel 202 (such as the structure shown in Figure 6A ).

[0062] In at least one embodiment of the present disclosure, as Figures 6A to 6C shown, the first touch electrode 210 includes a plurality of first electrode blocks 211 and a first connection portion 212. The first electrode blocks 211 are connected to each other through the first connection portion 212. The second touch electrode 220 includes a plurality of second electrode blocks 221 and a second connection portion 222. The second electrode blocks 221 are connected to each other through the second connection portion 222. The first connection portion 212 and the second connection portion 222 cross each other, and the first electrode blocks 211 and the second electrode blocks 221 around each intersection form a touch capacitor.

[0063] In at least one embodiment of the present disclosure, as Figures 6A to 6C shown, the first electrode block 211 and the second electrode block 221 are on the same layer, one of the first connection portion 212 and the second connection portion 222 is on the same layer as the first electrode block 211 and the second electrode block 221, and the other of the first connection portion 212 and the second connection portion 222 is a conductive bridge.

[0064] In at least one embodiment of the present disclosure, as Figures 6A to 6C shown, one of the first touch electrode 210 and the second touch electrode 220 is a driving electrode, and the other of the first touch electrode 210 and the second touch electrode 220 is a sensing electrode.

[0065] In at least one embodiment of the present disclosure, as Figure 1 , Figure 6B and Figure 6C shown, the touch panel is configured to have a display function, that is, the touch function area 101 can be a display area, and correspondingly, the non-touch function area 102 is a non-display area. The substrate 100 includes an array substrate 110 and a display function layer located on the array substrate 110. The display function layer is located in the display area. The display function layer includes a plurality of light-emitting devices 120 located in the touch function area 101. The light-emitting devices 120 are solid light-emitting structures of sub-pixels R, G, and B arranged in the display area. The array substrate 110 includes a pixel driving circuit. The pixel driving circuit includes a plurality of control transistors 111. The active layer of the first transistor 421 and / or the active layer of the second transistor 422 are arranged on the same layer as at least part of the active layers of the control transistors 111. The control transistors 111 can be divided into switching transistors, driving transistors, etc. Each switching transistor and driving transistor can be arranged on the same layer or distributed in different layers. For example, different switching transistors can also be distributed in different layers. Thus, the first transistor and / or the second transistor 422 only need to be arranged on the same layer as the control transistors 111 in one of the layers. It should be noted that when describing whether transistors are on the same layer, the criterion is whether the active layers included therein are on the same layer, that is, if two transistors are on the same layer, then the active layers included in the two transistors are also on the same layer. The active layer is the semiconductor layer of the transistor, and it includes a channel.

[0066] The light-emitting device 120 includes a first electrode 121, a light-emitting function layer 122, a second electrode 123, etc. laminated on the array substrate 110. One of the first electrode 121 and the second electrode 123 is an anode, and the other is a cathode.

[0067] In at least one embodiment of the present disclosure, as Figure 6B and Figure 6CAs shown, the first touch electrode 210 and the second touch electrode 220 are arranged as grid electrodes so that the light emitted by the light-emitting device 120 can be emitted from the meshes of the grid electrodes, thereby improving the light extraction rate of the display panel, increasing the brightness of the display panel and reducing its power consumption.

[0068] In at least one embodiment of the present disclosure, as Figure 7 shown, the touch panel further includes a dam 107, which is located in the wiring area 103 and surrounds the touch functional area 101. The dam 107 is arranged between the bending area 104 and the touch functional area 101, and thus is arranged in the border of the touch panel. In the case of adopting the solution of the embodiment of the present disclosure, the number of signal lines at the position where the dam 107 is located is reduced, which is beneficial to improving the adhesion ability of the dam 107 to improve the strength of the dam; in addition, this solution can also reduce the influence of the setting of the dam 107 on the signal lines here to improve the reliability of the signal lines.

[0069] In the embodiment of the present disclosure, the way in which the first touch channel 201 forms the first channel group 201A will affect the distribution of the traces of the touch panel. In the embodiment of the present disclosure, this way can be set according to actual process requirements and is not limited thereto. Below, several ways in which the first touch channel 201 forms the first channel group 201A will be described in combination with specific embodiments.

[0070] In some embodiments of the present disclosure, refer back to Figures 1 to 5, the touch function layer 200 includes 2N first touch channels 201. The Xth first touch channel 201 and the (N - X + 1)th first touch channel 201 are in the same first channel group 201A. The (N + Y)th first touch channel 201 and the (2N - Y + 1)th first touch channel 201 are in the same first channel group 201A. N is a positive integer not less than 2, X is a natural number less than N, and Y is a positive integer less than 2N. For example, when N is 20, that is, the touch function layer 200 includes 40 first touch channels 201. Taking the 20th first touch channel 201 and the 21st first touch channel 201 as the boundary, the touch function area 101 is divided into upper and lower regions. The 1st to 20th first touch channels 201 are in the lower region, and the 21st to 40th first touch channels 201 are in the upper region. In the lower region, the 1st first touch channel 201 and the 20th first touch channel 201 are in the same first channel group 201A, the 2nd first touch channel 201 and the 19th first touch channel 201 are in the same first channel group 201A, and so on, until the 10th first touch channel 201 and the 11th first touch channel 201 are in the same first channel group 201A; similarly, in the upper region, the 21st first touch channel 201 and the 40th first touch channel 201 are in the same first channel group 201A, the 22nd first touch channel 201 and the 39th first touch channel 201 are in the same first channel group 201A, and so on, until the 30th first touch channel 201 and the 31st first touch channel 201 are in the same first channel group 201A. In this way, the signal lines for connecting each first touch channel 201 are independent of each other and there is no cross-line, which is beneficial to alleviating the wiring pressure of the touch panel.

[0071] In some other embodiments of the present disclosure, as Figure 8 shown, the touch function layer 200 includes 4N first touch channels 201. The Xth first touch channel 201 and the (X + N)th first touch channel 201 are in the same first channel group 201A. The (X + 2N)th first touch channel 201 and the (X + 3N)th first touch channel 201 are in the same first channel group 201A. N is a positive integer not less than 2, and X is a positive integer not greater than N. For example, when N is 20 and X is 10, that is, the touch function layer 200 includes 40 first touch channels 201. The 1st first touch channel 201 and the 11th first touch channel 201 are in the same first channel group 201A, the 2nd first touch channel 201 and the 12th first touch channel 201 are in the same first channel group 201A, and so on, until the 30th first touch channel 201 and the 40th first touch channel 201 are in the same first channel group 201A.

[0072] In some other embodiments of the present disclosure, as Figure 9 shown, the first touch channels 201 included in each first channel group 201A are adjacent to each other. For example, taking the touch function layer 200 including 40 first touch channels 201 as an example, the first first touch channel 201 and the second first touch channel 201 are located in the same first channel group 201A, the third first touch channel 201 and the fourth first touch channel 201 are located in the same first channel group 201A, and so on, until the 39th first touch channel 201 and the 40th first touch channel 201 are located in the same first channel group 201A. In this way, the signal lines for connecting the respective first touch channels 201 are independent of each other and there is no cross-line, which is beneficial to alleviating the wiring pressure of the touch panel.

[0073] In the embodiments of the present disclosure, the second touch channels 202 can also be designed similarly to the first touch channels 201, so as to reduce the wiring pressure on the signal lines related to the second touch channels 202, as follows.

[0074] In at least one embodiment of the present disclosure, as Figure 10 shown, the touch function layer 200 includes a plurality of second touch channels 202 arranged in parallel. The second touch channels 202 extend along the second direction and are divided into a plurality of second channel groups 202A. Each second channel group 202A includes at least two second touch channels 202, and the second touch channels 202 in each second channel group 202A are connected in series with each other. The touch panel further includes a plurality of second touch signal lines 321 and a plurality of second touch transfer lines 322. The second touch signal lines 321 are located in the non-touch function area 102 and correspond to the second touch channels 202 respectively. The second touch transfer lines 322 are located in the non-touch function area 102 and correspond to the second channel groups 202A respectively. The second touch transfer lines 322 are connected to the corresponding second channel groups 202A. The multi-channel distribution circuit 400 includes a plurality of second distribution units 402. The second touch signal lines 321 are connected to the second touch signal transfer lines through the second distribution units 402. The second touch transfer lines 322 corresponding to the second channel groups 202A and the second touch signal lines 321 corresponding to the second touch channels 202 included in the second channel groups 202A are connected to the same second distribution unit 402.

[0075] Exemplarily, as Figure 10As shown in the figure, the second channel group 202A includes two second touch channels 202 connected in series. The number of second touch signal lines 321 is equal to the number of second touch channels 202, and the number of second touch adapter lines 322 is equal to the number of second channel groups 202A. Thus, the number of second touch adapter lines 322 is 1 / 2 of the number of second touch signal lines 321. In this way, the wiring pressure in the area where the second touch adapter lines 322 are located can be greatly reduced.

[0076] It should be noted that for the necessity of the number of second touch signal lines 321 being equal to the number of second touch channels 202, reference can be made to the relevant description of why the number of first touch channels 201 and first touch signal lines 311 are equal in the foregoing embodiments, which will not be elaborated here.

[0077] In at least one embodiment of the present disclosure, as Figures 10 to 13 shown in the figure, the second distribution unit 402 includes a third signal bus 413 and a fourth signal bus 414. The second distribution unit 402 includes a third transistor 423 and a fourth transistor 424. The gate of the third transistor 423 is connected to the third signal bus 413, and the gate of the fourth transistor 424 is connected to the fourth signal bus 414. The first poles of the third transistor 423 and the fourth transistor 424 are connected to different second touch signal lines 321, and the second poles of the third transistor 423 and the fourth transistor 424 are connected to the same second touch adapter line 322. For example, taking the touch panel including 16 second touch channels 202 as an example, the second touch channels 202 are arranged in sequence as M1 to M16. The second touch adapter line 322 corresponding to the second touch signal line 321 (denoted as 321-M1) corresponding to the M1st second touch channel 202 and the second touch signal line 321 (denoted as 321-M8) corresponding to the M8th second touch channel 202 is denoted as 322-Y1. Thus, there are 8 second touch adapter lines 322 numbered from 322-Y1 to 322-Y8. The scanning timing of the second distribution unit 402 can be as Figure 12 shown in the figure. For the second touch channels 202, when the third signal bus 413 is turned on, the M1st to M4th second touch channels 202 receive signals in sequence, and at the same time, the M9th to M12th second touch channels 202 receive signals in sequence. Similarly, when the fourth signal bus 414 is turned on, the M8th to M5th second touch channels 202 receive signals in sequence, and the M16th to M13th second touch channels 202 receive signals in sequence. In this way, the scanning of all second touch channels 202 can be completed.

[0078] In the embodiments of the present disclosure, the manner in which the second touch channel 202 forms the second channel group 202A will affect the distribution of the traces of the touch panel. In the embodiments of the present disclosure, this manner can be set according to actual process requirements and is not limited thereto. Below, several manners in which the second touch channel 202 forms the second channel group 202A will be described in conjunction with specific embodiments.

[0079] In some embodiments of the present disclosure, refer back to Figures 10 to 11 , the touch function layer 200 includes 2M second touch channels 202. The Xth second touch channel 202 and the (M - X + 1)th second touch channel 202 are in the same second channel group 202A. The (M + Y)th second touch channel 202 and the (2M - Y + 1)th second touch channel 202 are in the same second channel group 202A. M is a positive integer not less than 2, X is a natural number less than M, and Y is a positive integer less than 2M. For example, M is 8, that is, the touch function layer 200 includes 16 second touch channels 202. Taking the 8th second touch channel 202 and the 9th second touch channel 202 as the boundary, the touch function area 101 is divided into left and right regions. The 1st to 8th second touch channels 202 are in the left region, and the 9th to 16th second touch channels 202 are in the right region. In the left region, the 1st second touch channel 202 and the 8th second touch channel 202 are in the same second channel group 202A, the 2nd second touch channel 202 and the 7th second touch channel 202 are in the same second channel group 202A, and so on, until the 4th second touch channel 202 and the 5th second touch channel 202 are in the same second channel group 202A; in the right region, the 9th second touch channel 202 and the 16th second touch channel 202 are in the same second channel group 202A, the 10th second touch channel 202 and the 15th second touch channel 202 are in the same second channel group 202A, and so on, until the 12th second touch channel 202 and the 13th second touch channel 202 are in the same second channel group 202A. In this way, the signal lines for connecting each second touch channel 202 are independent of each other and there will be no cross lines, which is beneficial to alleviating the wiring pressure of the touch panel.

[0080] In some other embodiments of the present disclosure, such as Figure 14As shown, the touch function layer 200 includes 4M second touch channels 202. For the 1st to 2Mth second touch channels, the Xth second touch channel 202 and the (X + M)th second touch channel 202 are in the same second channel group 202A. For the (2M + 1)th to 4Mth second touch channels, the (X + 2M)th second touch channel 202 and the (X + 3M)th second touch channel 202 are in the same second channel group 202A, where M is a positive integer not less than 2, and X is a positive integer not greater than M. For example, when M is 4 and X is 4, that is, the touch function layer 200 includes 16 second touch channels 202. Taking the 8th second touch channel 202 and the 9th second touch channel 202 as the boundary, the touch function area 101 is divided into left and right regions. The 1st to 8th second touch channels 202 are in the left region, and the 9th to 16th second touch channels 202 are in the right region. In the left region, the 1st second touch channel 202 and the 5th second touch channel 202 are in the same second channel group 202A, the 2nd second touch channel 202 and the 6th second touch channel 202 are in the same second channel group 202A, and so on, until the 4th second touch channel 202 and the 8th second touch channel 202 are in the same second channel group 202A. In the right region, the 9th second touch channel 202 and the 13th second touch channel 202 are in the same second channel group 202A, the 10th second touch channel 202 and the 14th second touch channel 202 are in the same second channel group 202A, and so on, until the 12th second touch channel 202 and the 16th second touch channel 202 are in the same second channel group 202A.

[0081] In some other embodiments of the present disclosure, as Figure 15 shown, the second touch channels 202 included in each second channel group 202A are adjacent to each other. For example, taking the touch function layer 200 including 16 second touch channels 202 as an example, the 1st second touch channel 202 and the 2nd second touch channel 202 are in the same second channel group 202A, the 3rd second touch channel 202 and the 4th second touch channel 202 are in the same second channel group 202A, and so on, until the 15th second touch channel 202 and the 16th second touch channel 202 are in the same second channel group 202A. In this way, the signal lines for connecting the respective second touch channels 202 are independent of each other and there is no cross-line, which is beneficial to alleviating the wiring pressure of the touch panel.

[0082] In at least one embodiment of the present disclosure, refer back to Figure 6C, the touch function layer 200 can be disposed on the encapsulation structure 500. The encapsulation structure 500 is located on the display side of the display substrate to cover the light-emitting device 120, covering the second encapsulation layer 520 and the third encapsulation layer 530 of the first encapsulation layer 510. The second encapsulation layer 520 is located between the first encapsulation layer 510 and the third encapsulation layer 530. For example, the second encapsulation layer 520 is an organic film layer, and the first encapsulation layer 510 and the third encapsulation layer 530 are inorganic film layers. The second encapsulation layer 520 can improve the flatness of the display panel surface to facilitate the setting of other components on the encapsulation layer; in addition, the second encapsulation layer 520 can have a certain flexibility to relieve the stress of the first encapsulation layer 510 and the third encapsulation layer 530, thereby improving the reliability of the display panel and being more conducive to the application of the display panel in the flexible display field; in addition, the third encapsulation layer 530 has high density, has a high barrier effect on water, oxygen, etc., and the third encapsulation layer 530 has higher strength to facilitate the preparation of other components (such as structures related to touch functions, optical film layers, etc.) thereon.

[0083] At least one embodiment of the present disclosure provides a display device, and the display device may include the touch panel in the above embodiment. For example, the display device may be any product or component having a display function such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, a navigator, etc.

[0084] It can be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. No limitation is made herein.

[0085] The above specific embodiments do not constitute a limitation to the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0086] The above is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, etc. made within the spirit and principles of this specification shall be included within the protection scope of this specification.

Claims

1. A touch panel, characterized in that: include: A substrate, including a touch function area and a non-touch function area; a touch function layer, located in the touch function area, and comprising a plurality of first touch channels arranged in parallel, wherein the first touch channels extend along a first direction and are divided into a plurality of first channel groups, each of the first channel groups comprises at least two first touch channels, and the first touch channels of each first channel group are connected in series with each other; a plurality of first touch signal lines, located in the non-touch functional area and corresponding to the first touch channels respectively; A plurality of first touch-control adapter wires are located in the non-touch function area and correspond to the first channel groups respectively, and the first touch-control adapter wires are connected to the corresponding first channel groups; A multi-way distribution circuit comprises a plurality of first distribution units, wherein the first touch signal line is connected to the first touch signal adapter line through the first distribution unit, and the first touch adapter line corresponding to the first channel group and the first touch channel included in the first channel group respectively correspond to the first touch signal line connected to the same first distribution unit.

2. The touch panel according to claim 1, characterized in that: The first distribution unit includes a first signal bus and a second signal bus, the first distribution unit includes a first transistor and a second transistor, The gate of the first transistor is connected to the first signal bus, and the gate of the second transistor is connected to the second signal bus. The first electrodes of the first transistor and the second transistor are connected to different first touch signal lines, and the second electrodes of the first transistor and the second transistor are connected to the same first touch switching line; Preferably, the number of the first touch control channels is greater than the number of the second touch control channels; Preferably, the substrate includes an array substrate and a display function layer located on the array substrate, the display function layer includes a plurality of light-emitting devices located in the touch function area, the array substrate includes a pixel driving circuit, the pixel driving circuit includes a plurality of control transistors, and the active layer of the first transistor and / or the active layer of the second transistor is arranged on the same layer as the active layer of at least part of the control transistor.

3. The touch panel according to claim 1 or 2, characterized in that: The non-touch functional area includes a wiring area, a bending area and a circuit area, the wiring area surrounds the touch functional area, the bending area is located on a side of the wiring area away from the touch functional area, and the bending area is located between the touch functional area and the circuit area. The first touch signal line and the multi-channel distribution circuit are both located in the circuit area, and the first touch adapter line extends from the touch function area through the wiring area and the bending area to the circuit area; Preferably, the non-touch function area further includes a binding area, the binding area is located on a side of the circuit area away from the bending area, and the first touch signal line extends into the binding area; Preferably, the touch panel further comprises a blocking dam, wherein the blocking dam is located in the wiring area and surrounds the touch function area.

4. The touch panel according to claim 1 or 2, characterized in that: The touch function layer includes 2N first touch channels, The Xth first touch channel and the N-X+1th first touch channel are located in the same first channel group, the N+Yth first touch channel and the 2N-Y+1th first touch channel are located in the same first channel group, N is a positive integer not less than 2, X is a natural number less than N, and Y is a positive integer less than 2N.

5. The touch panel according to claim 1 or 2, characterized in that: The touch function layer includes 4N first touch channels, The Xth first touch channel and the X+Nth first touch channel are located in the same first channel group, the X+2Nth first touch channel and the X+3Nth first touch channel are located in the same first channel group, N is a positive integer not less than 2, and X is a positive integer not greater than N.

6. The touch panel according to claim 1 or 2, characterized in that: The first touch control channels included in each of the first channel groups are adjacent to each other.

7. The touch panel according to claim 1 or 2, characterized in that: The touch function layer includes a plurality of second touch channels arranged in parallel, the second touch channels extend along a second direction and are divided into a plurality of second channel groups, each of the second channel groups includes at least two second touch channels, and the second touch channels of each second channel group are connected in series. The touch panel further includes a plurality of second touch signal lines and a plurality of second touch adapter lines, wherein the second touch signal lines are located in the non-touch functional area and correspond to the second touch channels respectively, the second touch adapter lines are located in the non-touch functional area and correspond to the second channel groups respectively, and the second touch adapter lines are connected to the corresponding second channel groups. The multi-way distribution circuit includes multiple second distribution units, the second touch signal line is connected to the second touch signal adapter line through the second distribution unit, and the second touch adapter line corresponding to the second channel group and the second touch channel included in the second channel group The second touch signal lines respectively corresponding to the second distribution unit are connected to the same second distribution unit.

8. The touch panel according to claim 7, characterized in that: The second distribution unit includes a third signal bus and a fourth signal bus, the second distribution unit includes a third transistor and a fourth transistor, The gate of the third transistor is connected to the third signal bus, and the gate of the fourth transistor is connected to the fourth signal bus. The first electrodes of the third transistor and the fourth transistor are connected to different second touch signal lines, and the second electrodes of the third transistor and the fourth transistor are connected to the same second touch switching line.

9. The touch panel according to claim 7, characterized in that: The touch function layer includes 2M second touch channels, the Xth second touch channel and the M-X+1th second touch channel are located in the same second channel group, the M+Yth second touch channel and the 2M-Y+1th second touch channel are located in the same second channel group, M is a positive integer not less than 2, X is a natural number less than M, and Y is a positive integer less than 2M; or The touch function layer includes 4M second touch channels, for the 1st to 2Mth second touch channels, the Xth second touch channel and the X+Mth second touch channel are located in the same second channel group, for the 2M+1st to 4Mth second touch channels, the X+2Mth second touch channel and the X+3Mth second touch channel are located in the same second channel group, M is a positive integer not less than 2, and X is a positive integer not greater than M; or The second touch control channels included in each of the second channel groups are adjacent to each other.

10. The touch panel according to claim 9, characterized in that: The touch function layer includes a first touch electrode located in the first touch channel and a second touch electrode located in the second touch channel, and the first touch electrode and the second touch electrode form a touch capacitor at the intersection of the first touch channel and the second touch channel; Preferably, the first touch electrode comprises a plurality of first electrode blocks and a first connecting portion, the first electrode blocks are connected to each other through the first connecting portion, the second touch electrode comprises a plurality of second electrode blocks and a second connecting portion, the second electrode blocks are connected to each other through the second connecting portion, the first connecting portion and the second connecting portion intersect each other, and the first electrode blocks and the second electrode blocks around each intersection constitute the touch capacitor; Preferably, the first electrode block and the second electrode block are in the same layer, one of the first connecting portion and the second connecting portion is in the same layer as the first electrode block and the second electrode block, and the other of the first connecting portion and the second connecting portion is a conductive bridge; Preferably, one of the first touch control electrode and the second touch control electrode is a driving electrode, and the other of the first touch control electrode and the second touch control electrode is a sensing electrode.

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