Display panel, touch driving method thereof and display device

Abstract

The display panel comprises a touch control layer, the touch control layer comprises first touch control signal lines and second touch control signal lines, each first touch control signal line comprises a first leading-out section and a first wiring section, each second touch control signal line comprises a second leading-out section and a second wiring section, at least ma first wiring sections are connected with the two first leading-out sections, at least mb second wiring sections are connected with two second lead-out sections, the second lead-out sections and the first lead-out sections are staggered by a channel serial number, touch sensing signals on ma first wiring sections are compared with touch sensing signals on mb second wiring sections through a touch driving chip, corresponding touch signals are output by corresponding touch channels, and the touch signals are output by the touch channels. The number of the first wiring sections and the number of the second wiring sections can be reduced while the touch control function of the display panel is not affected, and the design requirement of a narrow frame of the display panel is met. The invention further provides a display device comprising the display panel.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel and a touch driving method thereof, and a display device. Background Art

[0002] FMLOC (Flexible Multi-Layer On Cell) design is currently the mainstream in the field of OLED touch display. FMLOC design refers to making a touch layer on the package display substrate of the display panel.

[0003] The touch layer includes a first touch electrode and a second touch electrode. The first touch lead connected to the second touch electrode and the second touch lead connected to the second touch electrode go around from the side frame to the bottom frame and are connected to the touch integrated circuit. The number of first touch leads and second touch leads is large, resulting in a larger frame of the display panel.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] The purpose of the present disclosure is to overcome the problem that a large number of first touch leads and second touch leads result in a larger frame of a display panel, and to provide a display panel and a touch driving method thereof, and a display device.

[0006] According to one aspect of the present disclosure, a display panel is provided, the display panel comprising a display substrate and a touch layer, the touch layer being arranged on one side of the display substrate, the touch layer comprising a first touch electrode and a first touch lead, the first touch lead comprising a first touch signal line and a second touch signal line, the first touch signal line comprising n first lead-out segments and w1 first routing segments, the second touch signal line comprising n second lead-out segments and w2 second routing segments, one end of an nth first touch electrode is connected to the nth first lead-out segment, and the other end is connected to the nth second lead-out segment; at least ma first routing segments are connected to two ma first routing segments; A lead-out segment, at least mb second routing segments connect two second lead-out segments, the nith first lead-out segment and the n-(i+1)th first lead-out segment are connected to the n / 2-i / 2th first routing segment; when 1<mb<w2, the (n+2)-(i+1)th second lead-out segment and the (n+2)-(i+2)th second lead-out segment are connected to the (n+2) / 2-i / 2th second routing segment, n is a positive even number, i includes 0 and a positive even number, 2≤ni≤n, ma=n / 2-i / 2, mb=(n+2) / 2-i / 2, ma≤w1, mb≤w2.

[0007] In one embodiment of the present disclosure, when mb=1, the 1st second lead-out segment is connected to the 1st second routing segment, and when mb=w2, the nth second lead-out segment is connected to the n / 2+1th second routing segment.

[0008] In one embodiment of the present disclosure, the touch layer includes a first touch layer and a second touch layer, the second touch layer is arranged on a side of the first touch layer away from the display substrate, part of the first routing segment is located in the first touch layer, part of the first routing segment is located in the second touch layer, part of the second routing segment is located in the first touch layer, and part of the second routing segment is located in the second touch layer.

[0009] In one embodiment of the present disclosure, the orthographic projection of the first routing segment of the first touch layer on the display substrate is located between the orthographic projections of the first routing segment of the second touch layer on the display substrate, and the orthographic projection of the second routing segment of the first touch layer on the display substrate is located between the orthographic projections of the second routing segment of the second touch layer on the display substrate.

[0010] In one embodiment of the present disclosure, one of the first routing segments of the odd sequence or the first routing segments of the even sequence is arranged on the first touch layer, and the other of the first routing segments of the odd sequence or the first routing segments of the even sequence is arranged on the second touch layer.

[0011] In one embodiment of the present disclosure, one of the second routing segments of the odd sequence or the second routing segments of the even sequence is arranged on the first touch layer, and the other of the second routing segments of the odd sequence or the second routing segments of the even sequence is arranged on the second touch layer.

[0012] According to another aspect of the present disclosure, a method for driving a display panel according to any one aspect of the present disclosure is provided, the method comprising:

[0013] When the first touch control electrode in the nth row is touched, a touch sensing signal on the math first wiring segment connected to the first touch control electrode in the nth row and a touch sensing signal on the mbth second wiring segment connected to the first touch control electrode in the nth row are received;

[0014] When ma=mb, the touch sensing signal on the ma-th first routing segment is b, the touch sensing signal on the mb-th second routing segment is b, and the touch channel outputs a touch signal 2b-1.

[0015] In one embodiment of the present disclosure, when ma≠mb, the touch sensing signal on the math first routing segment is b, the touch sensing signal on the mbth second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0016] In one embodiment of the present disclosure, the method further includes: when the first touch electrodes in the nth row and the n+1th row are touched, receiving a touch sensing signal on the math first routing segment connected to the first touch electrode in the nth row, a touch sensing signal on the mbth second routing segment connected to the first touch electrode in the nth row, a touch sensing signal on the ma+1th first routing segment connected to the first touch electrode in the n+1th row, and a touch sensing signal on the mb+1th second routing segment connected to the first touch electrode in the n+1th row;

[0017] When ma=mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b, and the touch signal output by the touch channel is 2b-1; when ma≠mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b+1, and the touch signal output by the touch channel is 2b;

[0018] When ma+1=mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b, and the touch channel outputs a touch signal 2b-1; when ma+1≠mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0019] According to yet another aspect of the present disclosure, a display device is provided, including the display panel provided by one aspect of the present disclosure.

[0020] The display panel disclosed in the present invention comprises a touch layer, the touch layer comprises a first lead-out segment, a second lead-out segment, a first routing segment and a second routing segment, the first touch lead comprises a first touch signal line and a second touch signal line, the first touch signal line comprises n first lead-out segments and w1 first routing segments, the second touch signal line comprises n second lead-out segments and w2 second routing segments, at least ma first routing segments connect two first lead-out segments, at least mb second routing segments connect two second lead-out segments, the nith first lead-out segment and the n-(i+1)th first lead-out segment are connected to the n / 2-i / 2th first routing segment, and the n / 2-i / 2th first routing segment is connected to the n / 2-i / 2th first routing segment. The first routing segment is connected; when 1<mb<n, the (n+2)-(i+1)th second lead-out segment and the (n+2)-(i+2)th second lead-out segment are connected to the (n+2) / 2-i / 2th second routing segment, and the touch sensing signals on the ma first routing segments can be compared with the touch sensing signals on the mb second routing segments through the touch driving chip, and the corresponding touch signals are output by the corresponding touch channels. Without affecting the touch function of the display panel, the number of the first routing segments and the second routing segments can be reduced to meet the design requirements of the narrow frame of the display panel.

[0021] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0023] Figure 1 It is a schematic plan view of a display panel involved in an embodiment of the present disclosure.

[0024] Figure 2 A cross-sectional schematic diagram of a display panel involved in an embodiment of the present disclosure.

[0025] Figure 3 Another cross-sectional schematic diagram of a display panel involved in an embodiment of the present disclosure.

[0026] Figure 4 The present invention is a flowchart of a touch control driving method of a display panel according to an embodiment of the present disclosure.

[0027] Figure 5 Another flow chart of the touch driving method of the display panel involved in the embodiment of the present disclosure.

[0028] In the figure: 1-display substrate, 11-driving backplane, 12-light-emitting layer, 121-pixel definition part, 122-light-emitting device, 13-encapsulation layer, 2-touch layer, 21-first touch layer, 22-second touch layer, 23-touch barrier layer, 24-touch insulation layer, 25-touch protection layer, 201-first touch electrode, 202-second touch electrode, 203-first connecting part, 204-second connecting part, 100-display area, 200-peripheral area. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present disclosure will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted. In addition, the drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0030] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0031] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may exist in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used merely as labels and are not intended to limit the quantity of their objects.

[0032] Flexible Multi Layer On Cell (FMLOC) refers to a touch layer 2 made on a thin film encapsulation layer 13, wherein the touch layer 2 includes a first touch electrode 201 and a second touch electrode 202, wherein the first touch electrode 201 extends in a column direction, wherein the first touch electrode 201 includes a plurality of first touch units, wherein two adjacent first touch units are connected via a first connecting portion 203, wherein the second touch electrode 202 extends in a row direction, wherein the second touch electrode 202 includes a plurality of second touch units, wherein two adjacent second touch units are connected via a second connecting portion 204, wherein the row direction intersects with the column direction.

[0033] The first touch electrode 201 and the second touch electrode 202 are arranged in the same layer, and the first connecting portion 203 or the second connecting portion 204 is arranged in the same layer as the first touch electrode 201. The plurality of first touch control units and the plurality of second touch control units are distributed in the display area 100 in a grid shape, and coupling capacitance is generated at the position where the first touch electrode 201 and the second touch electrode 202 are close to each other. When a finger touches the touch device, the coupling capacitance at the touch position changes. The touch position of the finger can be determined by detecting the change of the coupling capacitance through the touch driving chip.

[0034] The touch layer 2 also includes a first touch lead and a second touch lead. The first touch lead can be connected to the first touch electrode 201, and the second touch lead can be connected to the second touch electrode 202. The first touch lead can be used to send a touch drive signal, and the second touch lead can be used to receive a touch sensing signal. The first touch lead and the second touch lead are arranged on the side frame of the peripheral area 200, and the lower frame of the peripheral area 200 is provided with a touch drive chip. The first touch lead and the second touch lead are wound from the side frame to the lower frame to connect to the touch drive chip. As the size of the display panel increases, the number of touch channels used for touch also increases significantly.

[0035] In order to realize the narrow frame design of the display panel, the spacing between adjacent first touch leads, between second touch leads, or between adjacent first touch leads and second touch leads is generally reduced, so that more first touch leads and second touch leads can be distributed while the width of the peripheral area 200 remains unchanged. However, in order to prevent the organic encapsulation layer 13 from overflowing, a blocking dam will be set in the peripheral area 200, and in order to prevent the intrusion of water vapor, a groove will also be set in the peripheral area 200. The setting of the groove and the blocking dam will compress the wiring space of the peripheral area 200, which will easily cause more touch leads to be distributed in the groove, resulting in metal residues between two adjacent touch leads after exposure and etching, thereby causing a touch short circuit failure. It is also possible to reduce the line width of each touch lead, but reducing the line width of the touch lead will cause a sharp increase in resistance, and there is a risk of affecting the amount of touch signal.

[0036] Based on this, the present disclosure provides a display panel. Figures 1 to 3 As shown, the display panel includes a display substrate 1 and a touch layer 2, the touch layer 2 is arranged on one side of the display substrate 1, the touch layer 2 includes a first touch electrode 201 and a first touch lead, the first touch lead includes a first touch signal line and a second touch signal line, the first touch signal line includes n first lead-out segments and w1 first routing segments, the second touch signal line includes n second lead-out segments and w2 second routing segments, one end of the first touch electrode 201 is connected to the first lead-out segment, and the other end is connected to the second lead-out segment; at least ma first routing segments are connected to two first lead-out segments, at least ma first routing segments are connected to two first lead-out segments, and at least The mb second routing segments connect two second lead-out segments, the nith first lead-out segment and the n-(i+1)th first lead-out segment are connected to the n / 2-i / 2th first routing segment; when 1<mb<n, the (n+2)-(i+1)th second lead-out segment and the (n+2)-(i+2)th second lead-out segment are connected to the (n+2) / 2-i / 2th second routing segment, n is a positive even number, i includes 0 and a positive even number, 2≤ni≤n, ma=n / 2-i / 2, mb=(n+2) / 2-i / 2, ma≤w1, mb≤w2.

[0037] At least ma first routing segments connect two first lead-out segments, at least mb second routing segments connect two second lead-out segments, the second lead-out segments are offset from the first lead-out segments by one channel number, the touch sensing signals on the ma first routing segments are compared with the touch sensing signals on the mb second routing segments through the touch driving chip, and the corresponding touch signals are output from the corresponding touch channels. Without affecting the touch function of the display panel, the number of the first routing segments and the second routing segments can be reduced to meet the design requirements of the narrow frame of the display panel.

[0038] The flexible circuit board involved in the embodiment of the present disclosure is described in detail below with reference to specific examples.

[0039] like Figures 1 to 3 As shown, the display panel may include a display substrate 1, the display substrate 1 includes a driving backplane 11, a light-emitting layer 12, and an encapsulation layer 13, the light-emitting layer 12 is arranged on one side of the driving backplane 11, and the encapsulation layer 13 is arranged on the side of the light-emitting layer 12 away from the driving backplane 11. The display panel also includes a touch layer 2, and the touch layer 2 is arranged on the side of the encapsulation layer 13 away from the driving backplane 11. The light-emitting layer 12 includes a pixel definition portion 121 and a light-emitting device 122, a pixel opening is formed between two adjacent pixel definition portions 121, and the light-emitting device 122 is arranged in the pixel opening.

[0040] The touch layer 2 may include a first touch electrode 201 and a second touch electrode 202. The first touch electrode 201 extends along the column direction. The first touch electrode 201 includes multiple first touch units. Two adjacent first touch units are connected by a first connecting portion 203. The second touch electrode 202 extends along the row direction. The second touch electrode 202 includes multiple second touch units. Two adjacent second touch units are connected by a second connecting portion 204. The row direction intersects with the column direction.

[0041] The touch layer 2 further includes a first touch lead and a second touch lead, the first touch lead can be connected to the first touch electrode 201, the second touch lead can be connected to the second touch electrode 202, the first touch lead can be used to send a touch drive signal, and the second touch lead can be used to receive a touch sensing signal. The first touch lead and the second touch lead are arranged on the side frame of the peripheral area 200, the lower frame of the peripheral area 200 is provided with a touch drive chip, and the first touch lead and the second touch lead are wound from the side frame to the lower frame to connect to the touch drive chip.

[0042] The first touch lead includes a first touch signal line and a second touch signal line. The first touch signal line includes n first lead segments and w1 first routing segment, the second touch signal line includes n second lead segments and w2 second routing segments, one end of the first touch electrode 201 is connected to the first lead segment, and the other end is connected to the second lead segment, when ma≤w1, at least ma first routing segments are connected to two first lead segments, the nith first lead segment and the n-(i+1)th first lead segment are connected to the n / 2-i / 2th first routing segment; at least mb second routing segments are connected to two second lead segments, when mb=1, the nth second routing segment is connected to the n / 2-i / 2th first routing segment. The 1st second lead-out segment is connected to the 1st second routing segment. When 1<mb<w2, the (n+2)-(i+1)th second lead-out segment and the (n+2)-(i+2)th second lead-out segment are connected to the (n+2) / 2-i / 2th second routing segment. When mb=w2, the nth second lead-out segment is connected to the n / 2+1th second routing segment. n is a positive even number, i includes 0 and a positive even number, 2≤ni≤n, ma=n / 2-i / 2, mb=(n+2) / 2-i / 2, ma≤w1, mb≤w2.

[0043] The first lead-out section of the first line and the first lead-out section of the second line are connected to the first routing section of the first line, the first lead-out section of the third line and the first lead-out section of the fourth line are connected to the first routing section of the second line, the first lead-out section of the (n-1)th line and the first lead-out section of the nth line are connected to the first routing section of the n / 2th line. The second lead-out section of the first line is connected to the second routing section of the first line, the second lead-out section of the second line and the second lead-out section of the third line are connected to the second routing section of the second line, the second lead-out section of the fourth line and the second lead-out section of the fifth line are connected to the second routing section of the third line, the first lead-out section of the (n-2)th line and the lead-out section of the (n-1)th line are connected to the n / 2th routing section, and the lead-out section of the nth line is connected to the second routing section of the (n / 2+1)th line. It can be understood that, when ma=w1, all first routing segments are connected to two first lead-out segments, when mb=1, the 1st second lead-out segment is connected to the 1st second routing segment, and when mb=w2, the nth second lead-out segment is connected to the n / 2+1th second routing segment. Except for the 1st and n / 2+1th second routing segments, each second routing segment is connected to two second lead-out segments.

[0044] like Figure 2 and Figure 3As shown, the touch layer 2 includes a first touch layer 21, a second touch layer 22, a touch barrier layer 23, a touch insulation layer 24 and a touch protection layer 25. The touch barrier layer 23 is arranged on the side of the encapsulation layer 13 away from the driving backplane 11, the first touch layer 21 is arranged on the side of the touch barrier layer 23 away from the driving backplane 11, the touch insulation layer 24 is arranged on the side of the first touch layer 21 away from the driving backplane 11, the second touch layer 22 is arranged on the side of the touch insulation layer 24 away from the driving backplane 11, and the touch protection layer 25 is arranged on the side of the second touch layer 22 away from the driving backplane 11.

[0045] Part of the first routing segment is located in the first touch layer 21, and part of the first routing segment is located in the second touch layer 22. The first touch electrode 201, the second touch electrode 202 and the first connection portion 203 can be provided in the first touch layer 21, and the second connection portion 204 can be provided in the second touch layer 22. Part of the second routing segment is located in the first touch layer 21, and part of the second routing segment is located in the second touch layer 22.

[0046] In order to reduce the coupling capacitance between the first touch layer 21 and the second touch layer 22, the orthographic projection of the first routing segment of the first touch layer 21 on the display substrate 1 can be set between the orthographic projections of the first routing segment of the second touch layer 22 on the display substrate 1, and the orthographic projection of the second routing segment of the first touch layer 21 on the display substrate 1 can be set between the orthographic projections of the second routing segment of the second touch layer 22 on the display substrate 1.

[0047] The first routing segments of the odd-numbered sequence may be arranged on the first touch layer 21, and the first routing segments of the even-numbered sequence may be arranged on the first touch layer 21, or the first routing segments of the odd-numbered sequence may be arranged on the second touch layer 22, and the first routing segments of the even-numbered sequence may be arranged on the first touch layer 21. The second routing segments of the odd-numbered sequence may be arranged on the first touch layer 21, and the second routing segments of the even-numbered sequence may be arranged on the first touch layer 21, or the second routing segments of the odd-numbered sequence may be arranged on the second touch layer 22, and the second routing segments of the even-numbered sequence may be arranged on the first touch layer 21.

[0048] The distribution of the first routing segment and the second routing segment can be freely combined. For example, the first routing segment of the odd sequence is arranged on the first touch layer 21, the second routing segment of the odd sequence is arranged on the first touch layer 21, the first routing segment of the even sequence is arranged on the second touch layer 22, and the second routing segment of the even sequence is arranged on the second touch layer 22. The first routing segment of the odd sequence is arranged on the first touch layer 21, the second routing segment of the even sequence is arranged on the first touch layer 21, the first routing segment of the even sequence is arranged on the second touch layer 22, and the second routing segment of the odd sequence is arranged on the second touch layer 22, which are not listed one by one here.

[0049] The present disclosure provides a method for driving a display panel. Figure 4As shown, the method may include:

[0050] Step S10, when the first touch electrodes 201 in the nth row are touched, receiving a touch sensing signal on the math first routing segment connected to the first touch electrodes 201 in the nth row, and a touch sensing signal on the mbth second routing segment connected to the first touch electrodes 201 in the nth row;

[0051] Step S20, when ma=mb, the touch sensing signal on the math first routing segment is b, the touch sensing signal on the mbth second routing segment is b, and the touch channel outputs a touch signal 2b-1.

[0052] When the second touch lead sends a touch drive signal to the touch drive chip, the first routing segment and the second routing segment will generate two different touch sensing signals, b and b+1, respectively. The touch sensing signal on the math first routing segment is compared with the touch sensing signal on the mbth second routing segment, and the touch sensing signal can be decoded through the touch channel, and the touch signal can be output through the touch channel. While meeting the touch function of the display panel, the number of the first routing segments and the second routing segments can be reduced.

[0053] The method may further include step S30, when ma≠mb, the touch sensing signal on the math first routing segment is b, the touch sensing signal on the mbth second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0054] The method may further include step S40, when the first touch electrodes 201 in the nth row and the n+1th row are touched, receiving a touch sensing signal on the math first routing segment connected to the first touch electrode 201 in the nth row, a touch sensing signal on the mbth second routing segment connected to the first touch electrode 201 in the nth row, a touch sensing signal on the ma+1th first routing segment connected to the first touch electrode 201 in the n+1th row, and a touch sensing signal on the mb+1th second routing segment connected to the first touch electrode 201 in the n+1th row;

[0055] When ma=mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b, and the touch signal output by the touch channel is 2b-1; when ma≠mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b+1, and the touch signal output by the touch channel is 2b;

[0056] When ma+1=mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b, and the touch channel outputs a touch signal 2b-1; when ma+1≠mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0057] It can be understood that when the first touch electrode 201, the first routing segment and the second routing segment have the same serial number, the touch sensing signal output by the first routing segment and the second routing segment is b, and when the serial number difference between the first routing segment and the second routing segment is ±1, the touch sensing signal output by the first routing segment and the second routing segment is b+1.

[0058] The driving method of the display panel involved in the embodiment of the present disclosure is described in detail below with reference to specific embodiments.

[0059] The second touch electrode 202 sends a touch drive signal, and the first touch electrode 201 outputs a touch sensing signal, so that the capacitance value of all the intersection points of the first touch electrode 201 and the second touch electrode 202 can be obtained, that is, the capacitance value of the two-dimensional plane of the entire touch screen. When a finger touches the screen, it affects the coupling between the first touch electrode 201 and the second touch electrode 202 near the touch point, thereby changing the capacitance between the first touch electrode 201 and the second touch electrode 202. By detecting the changes in these capacitances, the coordinates of each touch point can be determined separately.

[0060] like Figure 5 As shown, the second touch electrode 202 sends a touch drive signal, and the first touch electrode 201 outputs a touch sensing signal. When a finger touches the screen, the touch sensing signal is transmitted from the first touch electrode 201 to the first lead-out segment and the second lead-out segment, from the first lead-out segment to the first routing segment, and from the second lead-out segment to the second routing segment.

[0061] When the first touch electrode 201 of the nth row is touched, the touch sensing signal on the math first routing segment connected to the first touch electrode 201 of the nth row and the touch sensing signal on the mbth second routing segment connected to the first touch electrode 201 of the nth row are received; when ma=mb, the touch sensing signal on the math first routing segment is b, the touch sensing signal on the mbth second routing segment is b, and the touch channel outputs a touch signal 2b-1. When ma≠mb, the touch sensing signal on the math first routing segment is b, the touch sensing signal on the mbth second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0062] When the first touch electrodes 201 of the nth row and the n+1th row are touched, a touch sensing signal on the math first routing segment connected to the first touch electrode 201 of the nth row, a touch sensing signal on the mbth second routing segment connected to the first touch electrode 201 of the nth row, a touch sensing signal on the ma+1th first routing segment connected to the first touch electrode 201 of the n+1th row, and a touch sensing signal on the mb+1th second routing segment connected to the first touch electrode 201 of the n+1th row are received;

[0063] When ma=mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b, and the touch signal output by the touch channel is 2b-1; when ma≠mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b+1, and the touch signal output by the touch channel is 2b;

[0064] When ma+1=mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b, and the touch channel outputs a touch signal 2b-1; when ma+1≠mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b+1, and the touch channel outputs a touch signal 2b.

[0065] When single-point touch is performed, the finger touch position is the first touch electrode 201 of the third row as an example for explanation. When the finger touches the first touch electrode 201 of the third row, the touch sensing signal of the third first lead-out segment will change. Since the third first lead-out segment is connected to the second first routing segment, the touch sensing signal output by the second first routing segment is b at this time. The touch sensing signal of the third second lead-out segment changes. Since the third second lead-out segment is connected to the second second routing segment, the touch sensing signal output by the second second routing segment is b at this time. When the touch sensing signals output by the second first routing segment and the second second routing segment are both b, the touch channel outputs the touch signal 2b-1.

[0066] When single-point touch is performed, the finger touch position is the first touch electrode 201 of the 4th row for explanation. When the finger touches the first touch electrode 201 of the 4th row, the touch sensing signal of the 4th first lead-out segment changes. Since the 4th first lead-out segment is connected to the 2nd first routing segment, the touch sensing signal output by the 2nd first routing segment is b at this time. The touch sensing signal of the 4th second lead-out segment will change. Since the 4th second lead-out segment is connected to the 3rd second routing segment, the touch sensing signal output by the 3rd second routing segment is b+1 at this time. When the touch sensing signal output by the 2nd first routing segment is b and the touch sensing signal output by the 3rd second routing segment is b+1, the touch channel outputs the touch signal 2b.

[0067] When multi-touch is performed, the finger touch position may involve two rows of first touch electrodes 201. When the finger touches the third and fourth rows of first touch electrodes 201, the touch sensing signal of the third first lead-out segment will change, and the touch sensing signal of the third second lead-out segment will change. Since the third first lead-out segment is connected to the second first routing segment, and the third second lead-out segment is connected to the second second routing segment, the touch sensing signal output by the second first routing segment is b, and the touch sensing signal output by the second second routing segment is t. The touch sensing signal output by the segment is b, and the touch signal output by the touch channel is 2b-1; the touch sensing signal of the first lead-out segment of the 4th line will change, and the touch sensing signal of the second lead-out segment of the 4th line will change. Since the first lead-out segment of the 4th line is connected to the first routing segment of the 2nd line, and the second lead-out segment of the 4th line is connected to the second routing segment of the 3rd line, at this time, the touch sensing signal output by the first routing segment of the 2nd line is b, the touch sensing signal output by the second routing segment of the 3rd line is b+1, and the touch channel outputs the touch signal 2b.

[0068] When the finger touches the first touch electrodes 201 of the 4th and 5th rows, the touch sensing signal of the 4th first lead-out segment will change, and the touch sensing signal of the 4th second lead-out segment will change. Since the 4th first lead-out segment is connected to the 2nd first routing segment and the 4th second lead-out segment is connected to the 3rd second routing segment, at this time, the touch sensing signal output by the 2nd first routing segment is b, the touch sensing signal output by the 4th second routing segment is b+1, and the touch signal output by the touch channel is 2b; the touch sensing signal of the 5th first lead-out segment will change, and the touch sensing signal of the 5th second lead-out segment will change. Since the 5th first lead-out segment is connected to the 3rd first routing segment and the 5th second lead-out segment is connected to the 3rd second routing segment, at this time, the touch sensing signal output by the 3rd first routing segment is b, the touch sensing signal output by the 3rd second routing segment is b, and the touch signal output by the touch channel is 2b-1.

[0069] The embodiment of the present disclosure also provides a display device, which may include the display module mentioned above in the embodiment of the present disclosure. The specific structure and beneficial effects of the display module have been described in detail above, so they will not be repeated here.

[0070] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as a housing, a circuit board, a power cord, etc. Those skilled in the art may make corresponding supplements according to the specific use requirements of the display device, which will not be repeated here.

[0071] The display device can be a traditional electronic device, such as a mobile phone, a computer, a television, and a camcorder, or it can be an emerging wearable device, such as a virtual reality device and an augmented reality device, which are not listed here one by one.

[0072] It should be noted that the above embodiments are interoperable and can be combined with each other to form other schemes, and the scheme of the present disclosure is not limited to the schemes described in the above embodiments. After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other embodiments of the present disclosure. This application is intended to cover any modification, use or adaptive change of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field that are not disclosed in the present disclosure. The description and embodiments are to be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A display panel, characterized in that: include: Display substrate; A touch layer is provided on one side of the display substrate, the touch layer comprises a first touch electrode and a first touch lead, the first touch lead comprises a first touch signal line and a second touch signal line, the first touch signal line comprises n first lead-out segments and w1 first routing segments, the second touch signal line comprises n second lead-out segments and w2 second routing segments, one end of the nth first touch electrode is connected to the nth first lead-out segment, and the other end is connected to the nth second lead-out segment; At least ma first routing segments connect two first lead-out segments, at least mb second routing segments connect two second lead-out segments, the nith first lead-out segment and the n-(i+1)th first lead-out segment are connected to the n / 2-i / 2th first routing segment; when 1<mb<w2, the (n+2)-(i+1)th second lead-out segment and the (n+2)-(i+2)th second lead-out segment are connected to the (n+2) / 2-i / 2th second routing segment, n is a positive even number, i includes 0 and a positive even number, 2≤ni≤n, ma=n / 2-i / 2, mb=(n+2) / 2-i / 2, ma≤w1, mb≤w2.

2. The display panel according to claim 1, characterized in that: When mb=1, the first second lead-out segment is connected to the first second routing segment, and when mb=w2, the nth second lead-out segment is connected to the n / 2+1th second routing segment.

3. The display panel according to claim 1, characterized in that: The touch layer includes a first touch layer and a second touch layer, the second touch layer is arranged on a side of the first touch layer away from the display substrate, part of the first routing segment is located in the first touch layer, part of the first routing segment is located in the second touch layer, part of the second routing segment is located in the first touch layer, and part of the second routing segment is located in the second touch layer.

4. The display panel according to claim 3, characterized in that: The orthographic projection of the first routing segment of the first touch layer on the display substrate is located between the orthographic projections of the first routing segment of the second touch layer on the display substrate, and the orthographic projection of the second routing segment of the first touch layer on the display substrate is located between the orthographic projections of the second routing segment of the second touch layer on the display substrate.

5. The display panel according to claim 3 or 4, characterized in that: One of the first routing segments in the odd sequence or the first routing segments in the even sequence is arranged in the first touch layer, and the other of the first routing segments in the odd sequence or the first routing segments in the even sequence is arranged in the second touch layer.

6. The display panel according to claim 5, characterized in that: One of the second routing segments in the odd sequence or the second routing segments in the even sequence is arranged on the first touch layer, and the other of the second routing segments in the odd sequence or the second routing segments in the even sequence is arranged on the second touch layer.

7. A method for driving a display panel according to any one of claims 1 to 6, characterized in that: The method comprises: When the first touch electrode in the nth row is touched, receiving a touch sensing signal on the math first routing segment connected to the first touch electrode in the nth row, and a touch sensing signal on the mbth second routing segment connected to the first touch electrode in the nth row; When ma=mb, the touch sensing signal on the ma-th first routing segment is b, the touch sensing signal on the mb-th second routing segment is b, and the touch channel outputs a touch signal 2b-1.

8. The method for driving a display panel according to claim 7, wherein: When ma≠mb, the touch sensing signal on the ma-th first routing segment is b, the touch sensing signal on the mb-th second routing segment is b+1, and the touch channel outputs a touch signal 2b.

9. The method for driving a display panel according to claim 7 or 8, characterized in that: The method further comprises: When the first touch electrodes in the nth row and the n+1th row are touched, a touch sensing signal on the math first routing segment connected to the first touch electrode in the nth row, a touch sensing signal on the mbth second routing segment connected to the first touch electrode in the nth row, a touch sensing signal on the ma+1th first routing segment connected to the first touch electrode in the n+1th row, and a touch sensing signal on the mb+1th second routing segment connected to the first touch electrode in the n+1th row are received; When ma=mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b, and the touch channel outputs a touch signal of 2b-1; when ma≠mb, the touch sensing signal on the first routing segment of the math line is b, the touch sensing signal on the second routing segment of the mbth line is b+1, and the touch channel outputs a touch signal of 2b; When ma+1=mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b, and the touch channel outputs a touch signal 2b-1; when ma+1≠mb+1, the touch sensing signal on the ma+1th first routing segment is b, the touch sensing signal on the mb+1th second routing segment is b+1, and the touch channel outputs a touch signal 2b.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 6.

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