Display panel and display device

Abstract

A display panel is provided with a display area, a bending area and a binding area, wherein the bending area and the binding area are located on one side of the display area and sequentially away from the display area. The display panel comprises a display substrate and a touch function layer arranged on the display substrate. The touch function layer comprises a plurality of touch units arranged in the display area, a plurality of touch wires and a plurality of compensation lines. Each touch unit is electrically connected with at least one touch wire, and the multiple touch wires extend to the side, away from the display area, of the bending area from the display area through the bending area. The plurality of touch wires comprise at least one first touch wire and at least one second touch wire, and the resistance of the at least one first touch wire is greater than that of the at least one second touch wire. At least part of the compensation lines are arranged on the side, away from the display area, of the bending area, and the second touch line is electrically connected with at least one compensation line.

Description

[0001] This application is a divisional application. The application number of the original application is 202180001937.9, and the application date of the original application is July 21, 2021. The entire contents of the original application can be incorporated into this application by reference. Technical Field

[0002] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0003] On Cell technology refers to setting the touch function layer on the display side of the display panel. For example, the touch function layer can be directly formed on the thin film encapsulation layer (TFE) of the display panel by using a photolithography process. The touch function layer includes touch units and peripheral traces. Each touch unit is electrically connected to at least one peripheral trace, and the touch sensing signal is transmitted to the touch unit through the peripheral trace. Summary of the invention

[0004] In one aspect, a display panel is provided, comprising a display area, and a bending area and a binding area located at one side of the display area and sequentially away from the display area.

[0005] The display panel includes a display substrate and a touch function layer, and the touch function layer is arranged on the display substrate. The touch function layer includes a plurality of touch units, a plurality of touch traces and a plurality of compensation lines. The plurality of touch units are arranged in the display area. Each touch unit is electrically connected to at least one touch trace, and the plurality of touch traces extend from the display area through the bending area to a side of the bending area away from the display area. The plurality of touch traces include at least one first touch trace and at least one second touch trace, and the resistance of the at least one first touch trace is greater than the resistance of the at least one second touch trace. At least part of the plurality of compensation lines are arranged on a side of the bending area away from the display area, and the second touch trace is electrically connected to at least one compensation line.

[0006] In some embodiments, the display panel further includes a first fan-out area between the display area and the bending area, and a second fan-out area between the bending area and the binding area, wherein the area of ​​the second fan-out area is larger than the area of ​​the first fan-out area. The compensation line disposed on the side of the bending area away from the display area is bent at least once in the second fan-out area and converges to the binding area.

[0007] In some embodiments, the plurality of touch traces include at least one first touch trace group and at least one second touch trace group, and the average resistance of all touch traces of the first touch trace group is greater than the average resistance of all touch traces of the second touch trace group. The plurality of compensation lines include at least one compensation line group corresponding to the at least one second touch trace group, and at least one compensation line of each compensation line group is electrically connected to at least one touch trace of the corresponding second touch trace group.

[0008] The electrically connected touch traces and compensation lines form compensation touch lines, and the average resistance of all compensation touch lines in the corresponding second touch trace group and compensation line group is substantially equal to the average resistance of all touch traces in at least one first touch trace group.

[0009] In some embodiments, the resistance of the compensation touch line is substantially equal to the resistance of at least one touch line of at least one first touch line group.

[0010] In some embodiments, the resistance of each compensation touch line in the corresponding second touch line group and compensation line group is substantially equal.

[0011] In some embodiments, an average length of all touch lines of the second touch line group is smaller than an average length of all touch lines of at least one first touch line group.

[0012] In some embodiments, the display panel further includes a first fan-out region located between the display region and the bending region, and a second fan-out region located between the bending region and the binding region.

[0013] The display substrate includes a substrate and a first conductive layer, the first conductive layer is disposed on the substrate, and the first conductive layer includes a first power supply voltage line, which extends from the first fan-out area through the bending area and the second fan-out area to the binding area.

[0014] The plurality of touch lines include touch connection segments located in the first fan-out area and the second fan-out area, and the orthographic projections of the touch connection segments on the substrate at least partially overlap with the orthographic projections of the first power supply voltage line on the substrate. The orthographic projections of the plurality of compensation lines on the substrate at least partially overlap with the orthographic projections of the first power supply voltage line on the substrate.

[0015] In some embodiments, the orthographic projection of at least one compensation line on the substrate is within the orthographic projection range of the first power supply voltage line on the substrate. And / or, the first conductive layer further includes a second power supply voltage line, and the second power supply voltage line extends from the first fan-out area through the bending area and the second fan-out area to the binding area. The orthographic projection of at least one compensation line on the substrate partially overlaps with the orthographic projection of the first power supply voltage line on the substrate, and partially overlaps with the orthographic projection of the second power supply voltage line on the substrate.

[0016] In some embodiments, the first power supply voltage line includes a first connection portion located in the first fan-out area, the bending area, and the second fan-out area, and the first connection portion is located on a first side of a midline of the display panel extending along a second direction. The plurality of touch lines to which the touch connection segment located within the orthographic projection range of the first connection portion belongs include at least one first-side first touch line group and N first-side second touch line groups, where N≥2.

[0017] The average resistance of all the touch lines of each second touch line group in the 1st to Nth first-side second touch line groups decreases in sequence. Among the N compensation line groups corresponding to the N first-side second touch line groups, the average resistance of all the compensation lines of each compensation line group in the 1st to Nth compensation line groups increases in sequence. The i-th first-side second touch line group is electrically connected to the i-th compensation line group, i=1~N.

[0018] In some embodiments, the at least one first-side first touch wiring group and the N first-side second touch wiring groups are sequentially arranged along the first direction, and the N first-side second touch wiring groups are closer to the center line of the display panel extending along the second direction than the at least one first-side first touch wiring group. The first direction is substantially parallel to the boundary line between the first fan-out area and the display area, and the second direction is substantially perpendicular to the first direction. The N compensation line groups are all located on one side of the at least one first-side first touch wiring group close to the center line of the display panel extending along the second direction.

[0019] In some embodiments, when the first conductive layer further includes a second power supply voltage line, the second power supply voltage line is located on a side of the first connection portion close to a center line of the display panel extending along the second direction.

[0020] The N compensation line groups include at least one first target compensation line group and at least one second target compensation line group, the orthographic projection of the first target compensation line group on the substrate is located within the orthographic projection range of the first connection portion on the substrate, and the orthographic projection of the second target compensation line group on the substrate partially overlaps with the orthographic projection of the first connection portion on the substrate and partially overlaps with the orthographic projection of the second power supply voltage line on the substrate.

[0021] In some embodiments, the first-side second touch wiring group corresponding to the second target compensation wiring group is located on a side of the first-side second touch wiring group corresponding to the first target compensation wiring group close to a midline of the display panel extending along the second direction.

[0022] In some embodiments, the plurality of touch control units include a plurality of first touch control units and a plurality of second touch control units, each of the first touch control units extends along a first direction, and the plurality of first touch control units are arranged in parallel along a second direction. Each of the second touch control units extends along the second direction, and the plurality of second touch control units are arranged in parallel along the first direction.

[0023] The multiple first touch units are divided into multiple groups, each group includes one or multiple first touch units adjacent in the second direction, the multiple groups of first touch units correspond one-to-one to the at least one first-side first touch wiring group and the N first-side second touch wiring groups, and at least one touch wiring of each first-side first touch wiring group and each first-side second touch wiring group is electrically connected to at least one first touch unit of the corresponding first touch unit group.

[0024] Along the second direction, at least one first touch unit group corresponding to the at least one first-side first touch wiring group and N first touch unit groups corresponding to the 1st to Nth first-side second touch wiring groups are sequentially close to the first fan-out area.

[0025] In some embodiments, the display panel includes a first peripheral area and a second peripheral area located on opposite sides of the display area in a first direction, and the multiple touch traces of the at least one first-side first touch trace group and the N first-side second touch trace groups all extend along the first peripheral area to the first fan-out area.

[0026] In some embodiments, the first power voltage line includes a second connection portion located in the first fan-out area, the bending area, and the second fan-out area, and the second connection portion is located on a second side of a midline of the display panel extending along a second direction.

[0027] The multiple touch lines belonging to the touch connection segment located within the orthographic projection range of the second connection portion include at least one second-side first touch line group and at least one second-side second touch line group arranged in sequence along the first direction, and the at least one second-side first touch line group is closer to the midline of the display panel extending along the second direction than the at least one second-side second touch line group.

[0028] The orthographic projection of at least one compensation line group corresponding to the at least one second touch wiring group on the second side on the substrate is located within the orthographic projection range of the second connecting portion on the substrate.

[0029] In some embodiments, the multiple touch units include multiple first touch units and multiple second touch units, each first touch unit extends along the first direction, and the multiple first touch units are arranged in parallel along the second direction, each second touch unit extends along the second direction, and the multiple second touch units are arranged in parallel along the first direction.

[0030] The multiple second touch units are divided into multiple groups, each group includes one or multiple second touch units adjacent in the first direction, the multiple groups of second touch units correspond one-to-one to the at least one second-side first touch wiring group and the at least one second-side second touch wiring group, and at least one touch wiring of each second-side first touch wiring group and each second-side second touch wiring group is electrically connected to at least one second touch unit of the corresponding second touch unit group.

[0031] A midline extending along the first direction and from the display panel along the second direction points to the direction of the second connecting portion, and at least one second touch unit group corresponding to the at least one second side first touch wiring group and at least one second touch unit group corresponding to the at least one second side second touch wiring group are arranged in sequence.

[0032] In some embodiments, the display panel includes a third peripheral area and a fourth peripheral area located on opposite sides of the display area in the second direction, the first fan-out area, the bending area, the second fan-out area and the binding area are located in the fourth peripheral area. The plurality of touch traces in the at least one second-side first touch trace group and the at least one second-side second touch trace group are all located in the fourth peripheral area.

[0033] In some embodiments, the display panel further includes a first peripheral area and a second peripheral area located on opposite sides of the display area in the first direction. The plurality of touch lines further include a third touch line group, at least one touch line of the third touch line group is electrically connected to at least one second touch unit, and is collected from the third peripheral area, sequentially through the second peripheral area, the first fan-out area, the bending area, and the second fan-out area to the binding area.

[0034] The orthographic projection of the portion of at least one touch wiring of the third touch wiring group located in the first fan-out area and the second fan-out area on the substrate is located within the orthographic projection range of the first power supply voltage line on the substrate. The portion of the third touch wiring group located in the fourth peripheral area is further away from the center line of the display panel extending along the second direction relative to the at least one second touch wiring group on the second side.

[0035] In some embodiments, the plurality of touch lines to which the touch connection segment located within the orthographic projection range of the second connection portion belongs include M second-side second touch line groups, where M≥2.

[0036] The average resistance of all the touch lines of each second touch line group in the 1st to the Mth second side second touch line groups decreases in sequence. Among the M compensation line groups corresponding to the M second side second touch line groups, the average resistance of all the compensation lines of each compensation line group in the 1st to the Mth compensation line groups increases in sequence. The jth second side second touch line group is electrically connected to the jth compensation line group, j=1~M.

[0037] In some embodiments, the touch function layer includes an electrode layer, a first insulating layer and a bridging layer stacked on the display substrate, the first insulating layer is located between the electrode layer and the bridging layer, and the bridging layer is located on a side of the electrode layer close to or away from the display substrate.

[0038] The plurality of touch control units include a plurality of first touch control units and a plurality of second touch control units that are insulated from each other, each first touch control unit extends along a first direction, includes a plurality of first touch control electrodes, and a plurality of first connection bridges, and two adjacent first touch control electrodes are electrically connected via the first connection bridges. The plurality of first touch control units are arranged in parallel along a second direction.

[0039] Each second touch control unit extends along the second direction, includes a plurality of second touch control electrodes, and a plurality of second connection bridges, and two adjacent second touch control electrodes are electrically connected via the second connection bridges. The plurality of second touch control units are arranged in parallel along the first direction and are insulated from the plurality of first touch control units.

[0040] The first touch electrode, the first connecting bridge and the second touch electrode are arranged on the electrode layer, and the second connecting bridge is arranged on the bridging layer. Alternatively, the first touch electrode, the second touch electrode and the second connecting bridge are arranged on the electrode layer, and the first connecting bridge is arranged on the bridging layer.

[0041] In some embodiments, the portion of the touch routing located in the second fan-out area includes a first touch sub-line arranged in the electrode layer and a second touch sub-line arranged in the bridge layer, and the first touch sub-line and the second touch sub-line are electrically connected through at least one via in a first insulating layer arranged between the electrode layer and the bridge layer.

[0042] The compensation line is arranged on the electrode layer, and is directly electrically connected to the first touch sub-line of the touch line of the second touch line group. Alternatively, the compensation line is arranged on the bridge layer, and is directly electrically connected to the second touch sub-line of the touch line of the second touch line group. Alternatively, the compensation line includes a first compensation sub-line arranged on the electrode layer and a second compensation sub-line arranged on the bridge layer, the first compensation sub-line is directly electrically connected to the first touch sub-line of the touch line of the second touch line group, and the second compensation sub-line is directly electrically connected to the second touch sub-line of the touch line of the second touch line group.

[0043] In some embodiments, when the compensation line includes a first compensation sub-line and a second compensation sub-line, the first compensation sub-line is electrically connected to the second compensation sub-line through at least one via hole in an insulating layer disposed between the electrode layer and the bridge layer.

[0044] In some embodiments, the resistance of at least one touch line of the first touch line group is R max , the resistance of at least one touch line of the second touch line group is R min The line width of the compensation line electrically connected to at least one touch line of the second touch line group is W, the length of the compensation line is L, and the square resistance of the compensation line is X.

[0045] In some embodiments, when the compensation line includes a first compensation sub-line and a second compensation sub-line electrically connected, the square resistance of the first compensation sub-line is a, the square resistance of the second compensation sub-line of the compensation line is b, and the square resistance of the compensation line is in,

[0046] In some embodiments, the compensation line is in the shape of a broken line, including a plurality of broken line segments, at least one broken line segment extends along a first direction or a second direction, and the first direction intersects with the second direction.

[0047] In some embodiments, the compensation line includes a main line segment and a connecting line segment, one end of the main line segment is electrically connected to the corresponding touch line, and the other end of the main line segment is electrically connected to the connecting line segment after the main line segment is bent at least once. The connecting line segment extends away from one end of the main line segment to the binding area. The width of the main line segment is smaller than the width of the touch line, and / or the width of the main line segment is smaller than the width of the connecting line segment.

[0048] In some embodiments, the width of the main line segment ranges from 2.7 μm to 4.3 μm, the width of the connecting line segment ranges from 9 μm to 17 μm, and the width of the touch line ranges from 3.5 μm to 50 μm.

[0049] In some embodiments, the display substrate includes a first conductive layer, the touch trace includes a touch connection segment arranged on the touch functional layer, and a transition segment arranged on the first conductive layer, the touch connection segment includes a first sub-touch connection segment arranged on the first fan-out area, and a second sub-touch connection segment arranged on the second fan-out area, and the transition segment is arranged in the bending area.

[0050] One end of the transition segment is electrically connected to the first sub-touch connection segment through a via hole in the insulating layer between the first conductive layer and the touch function layer. The other end of the transition segment is electrically connected to the second sub-touch connection segment through a via hole in the insulating layer between the first conductive layer and the touch function layer.

[0051] On the other hand, a display panel is provided, comprising a display area, and a first fan-out area, a bending area, a second fan-out area and a binding area located on one side of the display area and sequentially away from the display area, wherein an area of ​​the second fan-out area is larger than that of the first fan-out area.

[0052] The display panel includes a display substrate and a touch function layer, the display substrate includes a first power supply voltage line, the first power supply voltage line includes a first connecting portion and a second connecting portion located in the first fan-out area, the bending area and the second fan-out area, the first connecting portion and the second connecting portion are respectively located on opposite sides of a midline of the display panel extending along a second direction, and the second direction is roughly perpendicular to a boundary line between the first fan-out area and the display area.

[0053] The touch function layer is arranged on the display substrate, and the touch function layer includes a plurality of touch units, a plurality of touch lines and a plurality of compensation lines. The plurality of touch units are arranged in the display area, and each touch unit is electrically connected to at least one touch line. The plurality of touch lines extend from the display area to the second fan-out area through the first fan-out area and the bending area in sequence; the plurality of touch lines include a plurality of first touch line groups and a plurality of second touch line groups, the average resistance of all touch lines of the first touch line group is greater than the average resistance of all touch lines of the second touch line group, and all touch lines of the first touch line group are gathered to the binding area. The plurality of compensation lines are bent at least once in the second fan-out area and gathered to the binding area. The plurality of compensation lines include compensation line groups corresponding to the second touch line groups one by one, and at least one compensation line of each compensation line group is electrically connected to at least one touch line of the corresponding second touch line group.

[0054] The plurality of first touch wiring groups and the plurality of second touch wiring groups include a first-side first touch wiring group, two first-side second touch wiring groups, a second-side first touch wiring group, and a second-side second touch wiring group, which are sequentially arranged along the first direction and in a direction from the first connection portion to the second connection portion. The orthographic projections of the first-side first touch wiring group and the first-side second touch wiring group on the display substrate overlap with the first connection portion of the first power supply voltage line, respectively. The orthographic projections of the second-side first touch wiring group and the second-side second touch wiring group on the display substrate overlap with the second connection portion of the first power supply voltage line, respectively.

[0055] In some embodiments, the multiple touch routing lines also include a third touch routing group, and the third touch routing group is located in part of the first fan-out area, the bending area, and the second fan-out area, and is farther away from the center line of the display panel extending along the second direction relative to the second side second touch routing group.

[0056] In some embodiments, the display panel includes multiple pin groups, and the multiple pin groups are arranged in the binding area, including a first pin group, a second pin group, a third pin group, a fourth pin group, a fifth pin group, a sixth pin group and a seventh pin group, which are arranged in sequence along the second direction and in a direction from the first connecting part to the second connecting part, and each pin group includes at least one pin.

[0057] Each touch trace of the first touch trace group on the first side is electrically connected to at least one pin of the first pin group. Each compensation line of the compensation line group corresponding to one second touch trace group on the first side is electrically connected to at least one pin of the second pin group, and each compensation line of the compensation line group corresponding to another second touch trace group on the first side is electrically connected to at least one pin of the third pin group. The first voltage power line is electrically connected to at least one pin of the fourth pin group, each touch trace of the first touch trace group on the second side is electrically connected to at least one pin of the fifth pin group, each compensation line of the compensation line group corresponding to the second touch trace group on the second side is electrically connected to at least one pin of the sixth pin group, and each touch trace of the third touch trace group is electrically connected to at least one pin of the seventh pin group.

[0058] In another aspect, a display device is provided, comprising: a display panel as described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] In order to more clearly illustrate the technical solutions in the present disclosure, the following briefly introduces the drawings required to be used in some embodiments of the present disclosure. Obviously, the drawings described below are only drawings of some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can also be obtained based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams, and are not limitations on the actual size of the product involved in the embodiments of the present disclosure, the actual process of the method, the actual timing of the signal, etc.

[0060] Figure 1 is a top view of a display panel according to some embodiments;

[0061] Figure 2 for Figure 1 A partial enlarged view of the display panel at position A;

[0062] Figure 3 for Figure 2 A partial enlarged view of the display panel at position C;

[0063] Figure 4 for Figure 1 A partial enlarged view of the display panel at position B;

[0064] Figure 5 for Figure 4 A partial enlarged view of the display panel at position D;

[0065] Figure 6 is a partial enlarged view of another display panel at position A according to some embodiments;

[0066] Figure 7 for Figure 6A partial enlarged view of the display panel at position E;

[0067] Figure 8 for Figure 7 A cross-sectional view of the display panel along the section line BB';

[0068] Fig. 9 is a cross-sectional view of another display panel along section line BB' according to some embodiments;

[0069] Fig.10 is a cross-sectional view of yet another display panel along section line BB′ according to some embodiments;

[0070] Fig.11 for Figure 6 A partial enlarged view of the display panel at F;

[0071] Fig.12 for Figure 6 A partial enlarged view of the display panel at position G;

[0072] Fig.13 is a partial enlarged view of another display panel at position A according to some embodiments;

[0073] Fig.14 for Fig.13 A partial enlarged view of the display panel at position I;

[0074] Fig.15 is a layout diagram of compensation lines of a display panel according to some embodiments;

[0075] Figure 16 to Figure 21 is a connection diagram of touch electrodes and touch wirings of a display panel according to some embodiments;

[0076] Fig. 22 for Figure 1 A cross-sectional view of the display panel along the section line AA';

[0077] Fig.23 is a connection diagram of touch electrodes of a display panel according to some embodiments;

[0078] Fig.24 for Fig.23 A cross-sectional view of the display panel along the section line CC';

[0079] Fig.25 is another connection diagram of touch electrodes of a display panel according to some embodiments;

[0080] Fig.26 for Fig.25 A cross-sectional view of the display panel along the section line DD';

[0081] Fig. 27 is another connection diagram of touch electrodes of a display panel according to some embodiments;

[0082] Fig.28 for Fig. 27 A cross-sectional view of the display panel along section line EE';

[0083] Fig.29 is a top view of a display device according to some embodiments. DETAILED DESCRIPTION

[0084] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0085] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0086] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0087] When describing some embodiments, the expression "electrically connected" and its derivatives may be used. For example, when describing some embodiments, the term "connected" may be used to indicate that two or more components have direct physical or electrical contact with each other.

[0088] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0089] The use of "configured to" herein is intended to be open and inclusive language that does not exclude devices adapted or configured to perform additional tasks or steps.

[0090] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0091] As used herein, "approximately" includes the stated values ​​and averages that are within an acceptable range of deviation from the particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurements in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system).

[0092] "Same layer" refers to a layer structure formed by using the same film-forming process to form a film layer for forming a specific pattern, and then using the same mask to form a layer structure through a single patterning process. Depending on the specific pattern, a single patterning process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous, and these specific patterns may also be at different heights or have different thicknesses.

[0093] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the thickness of layers and regions are exaggerated for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include shape deviations due to, for example, manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shape of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0094] In the related art, in the process of arranging and designing the peripheral wiring of the touch function layer, the length difference between the peripheral wirings is reduced to reduce the difference in resistance between the peripheral wirings, thereby reducing the difference in voltage drop generated by the sensing signals transmitted by the peripheral wirings, thereby improving the uniformity of the sensing signals received by each touch unit, thereby improving the accuracy of touch.

[0095] At present, the display panel includes a display area (Active Area, referred to as AA area; also known as an effective display area) and a fan-out area (Fanout Area) located on one side of the display area, and the fan-out area is located in the border area of ​​the display device. By bending and winding the shorter peripheral wiring in the fan-out area, the length of the peripheral wiring can be increased, thereby increasing the resistance of the peripheral wiring and reducing the difference in resistance between the shorter peripheral wiring and the longer peripheral wiring.

[0096] However, the peripheral wiring is bent and wound in the fan-out area, which occupies a larger area of ​​the fan-out area, resulting in an increase in the width of the frame of the display device, which is not conducive to a narrow frame of the display device.

[0097] To solve the above problems, Figure 1 As shown, some embodiments of the present disclosure provide a display panel 100, which includes a display area AA, and a bending area (Bending Area) BA and a binding area (Bonding Area) BD located on one side of the display area AA and away from the display area AA in sequence.

[0098] It can be understood that the display panel 100 is bent in the bending area BA so that the area (including the binding area BD) located on the side of the bending area BA away from the display area AA is bent to the non-display side of the display panel 100, so that the area between the display area AA and the bending area BA corresponds to the frame of the display device.

[0099] like Figure 1 and Fig. 22 As shown, the display panel 100 includes a display substrate 1 and a touch function layer T disposed on the display substrate 1 .

[0100] Among them, Fig. 22 As shown, the display substrate 1 includes a substrate 10, and a plurality of driving circuits and a plurality of light-emitting devices L disposed on the substrate 10. On this basis, the display substrate 1 includes a plurality of sub-pixels, each of which includes a pixel driving circuit and a light-emitting device L, and the pixel driving circuit is electrically connected to the light-emitting device L.

[0101] For example, the substrate 10 may be a multi-layer structure. For example, the substrate 10 may include a first polyimide layer, a buffer layer, and a second polyimide layer that are sequentially stacked.

[0102] like Fig. 22 As shown, the display substrate 1 further includes an active layer 104 , a first gate insulating layer 105 , a first gate conductive layer 106 , a second gate insulating layer 107 , a second gate conductive layer 108 , an interlayer dielectric layer 109 and a source-drain conductive layer 110 which are sequentially stacked on the substrate 10 .

[0103] The first gate insulating layer 105 insulates the active layer 104 from the first gate conductive layer 106 , the second gate insulating layer 107 insulates the first gate conductive layer 106 from the second gate conductive layer 108 , and the interlayer dielectric layer 109 insulates the second gate conductive layer 108 from the source-drain conductive layer 110 .

[0104] like Fig. 22 As shown, each pixel driving circuit includes a plurality of thin film transistors TFT and at least one capacitor C1. Fig. 22 One of the thin film transistors TFT and a capacitor C1 are shown.

[0105] The thin film transistor TFT may include an active layer 104 , a first gate insulating layer 105 , a gate 106A disposed in the first gate conductive layer 106 , a second gate insulating layer 107 , an interlayer dielectric layer 109 , and a source electrode 110A and a drain electrode 110B disposed in the source-drain conductive layer 110 .

[0106] Exemplarily, the active layer 104 may be disposed on the substrate 10, the first gate insulating layer 105 covers the substrate 10 and the active layer 104, the gate 106A is disposed on the side of the first gate insulating layer 105 away from the substrate 10, the second gate insulating layer 107 covers the gate 106A and the first gate insulating layer 105, the interlayer dielectric layer 109 covers the second gate insulating layer 107, the source 110A and the drain 110B are disposed on the side of the interlayer dielectric layer 109 away from the substrate 10, and the source 110A and the drain 110B may be electrically connected to the active layer 104 through vias penetrating the interlayer dielectric layer 109, the second gate insulating layer 107 and the first gate insulating layer 105, respectively.

[0107] It can be understood that the gate 106A is disposed on the side of the active layer 104 away from the substrate 10, that is, the gate 106A is located above the active layer 104, and the thin film transistor TFT is a top-gate thin film transistor. In other embodiments, the gate 106A may also be disposed on the side of the active layer 104 close to the substrate 10, that is, the gate 106A is located below the active layer 104, and the thin film transistor TFT is a bottom-gate thin film transistor.

[0108] Capacitor C1 may include a first electrode plate 106B disposed in the first gate conductive layer 106, and a second electrode plate 108A disposed in the second gate conductive layer 108, wherein the first electrode plate 106B and the gate 106A are disposed in the same layer, and the second electrode plate 108A is disposed between the second gate insulating layer 107 and the interlayer dielectric layer 109, and is disposed opposite to the first electrode plate 106B.

[0109] like Fig. 22As shown, the display substrate 1 further includes a passivation layer 111 and a planarization layer 112 which are sequentially stacked on the side of the source-drain conductive layer 110 away from the substrate 10. The passivation layer 111 and the planarization layer 112 cover the source 110A and the drain 110B to protect the source 110A and the drain 110B.

[0110] In addition, the above-mentioned multiple film layers where the pixel driving circuit is located also include gate lines, data lines, VDD lines and VSS lines, etc. Each pixel driving circuit is electrically connected to the gate lines, data lines and VDD lines, and is used to output a driving signal to the light-emitting device L. Among them, the VDD lines can be multiple lines extending along the second direction Y in the display area AA, and the VSS lines can be arranged around the display area AA in the peripheral area, and the light-emitting device L is electrically connected to the VSS lines.

[0111] The second direction Y is substantially perpendicular to the boundary between the first fan-out area FA1 and the display area AA. For example, the second direction Y is consistent with the column direction of the plurality of sub-pixels arranged in an array in the display substrate 1 .

[0112] The plurality of film layers where the driving circuit is located further include a gate driving circuit and a clock signal line, an STV line, a VGH line, and a VGL line electrically connected to the gate driving circuit.

[0113] like Fig. 22 As shown, the display substrate 1 further includes a first electrode 113 disposed on a side of the planar layer 112 away from the substrate 10 , and the first electrode 113 is electrically connected to the source electrode 110A through a via hole penetrating the planar layer 112 and the passivation layer 111 .

[0114] like Fig. 22 As shown, the display substrate 1 further includes a pixel defining layer 114 disposed on a side of the planar layer 112 away from the substrate 10 . The pixel defining layer 114 has a plurality of openings, each of which exposes at least a portion of the first electrode 113 . Each of the openings is located within a sub-pixel.

[0115] like Fig. 22 As shown, the light emitting device L includes a first electrode 113 , a light emitting functional layer EL and a second electrode 116 .

[0116] The light-emitting functional layer EL is located in the opening of the pixel defining layer 114 and is formed on the first electrode 113. The light-emitting functional layer EL may include small molecule organic materials or polymer molecule organic materials, and may be fluorescent luminescent materials or phosphorescent luminescent materials, and may emit red light, green light, blue light, or white light, etc. Moreover, according to different actual needs, in different examples, the light-emitting functional layer EL may further include one or more layers of an electron transport layer (election transporting layer, referred to as ETL), an electron injection layer (election injection layer, referred to as EIL), a hole transporting layer (hole transporting layer, referred to as HTL), and a hole injection layer (hole injection layer, referred to as HIL).

[0117] The second electrode 116 covers the light emitting functional layer EL. It should be noted that the second electrodes 116 of the light emitting devices L in each sub-pixel are connected to each other to form a planar electrode covering the entire layer, which serves as a common electrode for each light emitting device L.

[0118] For example, the first electrode 113 may be an anode, and the second electrode 116 may be a cathode.

[0119] The first electrode 113 of the light-emitting device L is electrically connected to the pixel driving circuit to receive a driving signal from the pixel driving circuit. The edge of the second electrode 116 extends to the peripheral area and is electrically connected to the VSS line to receive a VSS signal from the VSS line, so that an electric field is formed between the first electrode 113 and the second electrode 116 to excite the light-emitting functional layer EL to emit light.

[0120] like Fig. 22 As shown, the display substrate 1 further includes a support portion 115 disposed on a side of the pixel defining layer 114 away from the substrate 10 , and the support portion 115 can play a role in supporting and protecting the film layer located therebelow.

[0121] like Fig. 22 As shown, the display substrate 1 further includes an encapsulation layer 117 disposed on the side of the second electrode 116 away from the substrate 10, and the encapsulation layer 117 may include a first inorganic encapsulation sublayer 1171, an organic encapsulation sublayer 1172, and a second inorganic encapsulation sublayer 1173 stacked in sequence. The encapsulation layer 117 is used to encapsulate the display substrate 1 to prevent water and oxygen from entering and corroding the light-emitting device L.

[0122] In the On cell technology, the technology of directly setting the touch function layer T on the encapsulation layer 117 of the display substrate 1 includes FMLOC (Flexible Multi-Layer On Cell) technology. FMLOC technology can be based on the working principle of mutual capacitance detection, and generally uses two layers of metal to form TX (touch drive electrode) and RX (touch sensing electrode). When a finger touches the display device, the finger will take away the charge on the touch unit 3. The touch IC detects the change in the mutual capacitance value between TX and RX to identify the touch position of the finger, thereby realizing the touch function of the display device.

[0123] The following embodiments of the present disclosure are described by taking the display panel 100 using the FMLOC technology as an example.

[0124] like Figure 1 As shown, in the display panel 100 , the touch function layer T includes a plurality of touch units 3 disposed in the display area AA, for realizing the touch function of the display device.

[0125] The multiple touch control units 3 of the touch control function layer T include multiple first touch control units 31 (RX) and multiple second touch control units 32 (TX), each of the first touch control units 31 extends along the first direction X, and the multiple first touch control units 31 are arranged in parallel along the second direction Y. Each second touch control unit 32 extends along the second direction Y, and the multiple second touch control units 32 are arranged in parallel along the first direction X. The multiple first touch control units 31 and the multiple second touch control units 32 are insulated from each other, and the touch control IC detects the change of the mutual capacitance value between the first touch control unit 31 and the second touch control unit 32 to identify the touch action of the finger, thereby realizing the touch function of the display device.

[0126] The first direction X is substantially parallel to the boundary line between the first fan-out area FA1 and the display area AA. For example, the first direction X is consistent with the row direction of the plurality of sub-pixels arranged in an array in the display substrate 1 .

[0127] like Figure 1 As shown, the touch function layer T further includes a plurality of touch traces 4, and each touch unit 3 is electrically connected to at least one touch trace 4. The touch trace 4 is configured to transmit a voltage signal (sensor signal) to the touch unit 3 electrically connected thereto.

[0128] Exemplarily, each touch control unit 3 is electrically connected to a touch control wire 4 , and each touch control wire 4 transmits a voltage signal to the touch control unit 3 electrically connected thereto.

[0129] like Figure 1 and Figure 2As shown, multiple touch lines 4 extend from the display area AA through the bending area BA to the side of the bending area BA away from the display area AA. The multiple touch lines 4 include at least one first touch line 4A and at least one second touch line 4B, and the resistance of the at least one first touch line 4A is greater than the resistance of the at least one second touch line 4B.

[0130] It should be noted that if Figure 2 As shown, the first touch sensing trace 4A extends to the binding area BD, and the second touch sensing trace 4B does not extend to the binding area BD.

[0131] Exemplarily, the plurality of touch lines 4 include a first touch line 4A and a second touch line 4B, and the resistance of the first touch line 4A is greater than the resistance of the second touch line 4B.

[0132] For example, Figure 2 and Figure 4 As shown, the plurality of touch lines 4 include a plurality of first touch lines 4A and a plurality of second touch lines 4B. The resistance of each first touch line 4A is greater than the resistance of each second touch line 4B.

[0133] like Figure 2 and Figure 4 As shown, the touch function layer T further includes a plurality of compensation lines 5, at least some of which are arranged on the side of the bending area BA away from the display area AA. The second touch line 4B is electrically connected to at least one compensation line 5, and the resistance of the second touch line 4B can be compensated to reduce the difference between the resistance of the second touch line 4B and the resistance of the first touch line 4A.

[0134] Exemplarily, the plurality of compensation lines 5 are all disposed on a side of the bending area BA away from the display area AA. Each second touch-sensing trace 4B is electrically connected to a compensation line 5 .

[0135] Exemplarily, a portion of the compensation lines 5 among the plurality of compensation lines 5 are arranged on a side of the bending area BA away from the display area AA, referring to Fig.19 , another part of the compensation lines 5 in the plurality of compensation lines 5 may also be arranged in the area between the display area AA and the bending area BA. It can be understood that, in combination with Figure 1 and Fig.19The touch line 4 (second touch line 4B) electrically connected to the touch electrode located at the lower right corner of the display panel 100 has a shorter routing length. Therefore, the two ends of the touch line 4 are respectively electrically connected to the compensation line 5 arranged between the display area AA and the bending area BA, and the compensation line 5 arranged on the side of the bending area BA away from the display area AA, that is, one second touch line 4B is electrically connected to two compensation lines 5, so as to compensate for the resistance of the second touch line 4B. In other examples, each second touch line 4B may also be electrically connected to a compensation line 5, for example, each second touch line 4B is electrically connected to the compensation line 5 arranged between the display area AA and the bending area BA. For another example, each second touch line 4B is electrically connected to the compensation line 5 arranged on the side of the bending area BA away from the display area AA.

[0136] In the above-mentioned embodiment of the present disclosure, the resistance of the first touch line 4A is greater than the resistance of the second touch line 4B. By electrically connecting the compensation line 5 to the second touch line 4B, the resistance of the second touch line 4B can be increased, and the difference between the resistance of the second touch line 4B and the resistance of the first touch line 4A can be reduced, so that the difference between the voltage drop (IR-Drop) generated by the second touch line 4B transmitting the voltage signal and the voltage drop generated by the first touch line 4A transmitting the voltage signal is reduced. In the case where each touch line 4 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 to which each touch line 4 is electrically connected.

[0137] Furthermore, the display panel 100 is bent in the bending area BA so that the area (including the binding area BD) located on the side of the bending area BA away from the display area AA is bent to the non-display side of the display panel 100. Therefore, the area between the display area AA and the bending area BA corresponds to the frame of the display device, and the area located on the side of the bending area BA away from the display area AA does not correspond to the frame of the display device. Compared with setting all compensation lines 5 in the area between the display area AA and the bending area BA, setting at least part of the multiple compensation lines 5 in the area on the side of the bending area BA away from the display area AA is conducive to reducing the area of ​​the area between the display area AA and the bending area BA, thereby facilitating a narrow frame of the display device.

[0138] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the display panel 100 further includes a first fan-out area FA1 located between the display area AA and the bending area BA, and a second fan-out area FA2 located between the bending area BA and the binding area BD, and the area of ​​the second fan-out area FA2 is larger than that of the first fan-out area FA1.

[0139] It is understandable that by setting the area of ​​the second fan-out area FA2 to be larger than that of the first fan-out area FA1, it is helpful to reduce the width of the frame of the display device corresponding to the first fan-out area FA1, thereby facilitating a narrow frame of the display device.

[0140] like Figure 2 and Figure 4 As shown, the compensation line 5 disposed on the side of the bending area BA away from the display area AA is bent at least once in the second fan-out area FA2 and converges to the binding area BD.

[0141] It is understandable that the compensation line 5 is bent at least once in the second fan-out area FA2 so that the compensation line 5 is bent in a limited space, which can increase the routing length of the compensation line 5 and thus increase the resistance of the compensation line 5 .

[0142] Furthermore, since the area of ​​the second fan-out area FA2 is larger than that of the first fan-out area FA1, compared with the first fan-out area FA1, the second fan-out area FA2 can provide more bending and winding space for the compensation line 5, which is beneficial to increase the winding length of the compensation line 5, thereby increasing the compensation value of the resistance of the second touch line 4B.

[0143] Exemplarily, the plurality of compensation lines 5 are gathered to the binding area BD after being bent multiple times in the second fan-out area FA2 , so that the routing length of the compensation lines 5 can be increased.

[0144] In some embodiments, Figure 2 and Figure 4 As shown, the plurality of touch traces 4 include at least one first touch trace group 41 and at least one second touch trace group 42 , and the average resistance of all touch traces 4 in the first touch trace group 41 is greater than the average resistance of all touch traces 4 in the second touch trace group 42 .

[0145] like Figure 2 and Figure 4 As shown, the plurality of compensation lines 5 include at least one compensation line group 50 corresponding to at least one second touch line group 42 , and at least one compensation line 5 of each compensation line group 50 is electrically connected to at least one touch line 4 of the corresponding second touch line group 42 .

[0146] like Figure 2 and Figure 4 As shown, the electrically connected touch traces 4 and compensation traces 5 form compensation touch traces 45, and the average resistance of all compensation touch traces 45 in the corresponding second touch trace group 42 and compensation trace group 50 is substantially equal to the average resistance of all touch traces 4 in at least one first touch trace group 41.

[0147] It should be noted that the first touch line group 41 may include one touch line 4 or multiple touch lines 4 , the second touch line group 42 may include one touch line 4 or multiple touch lines 4 , and the compensation line group 50 may include one compensation line 5 or multiple compensation lines 5 . Figure 2 and Figure 4 , the first touch line group 41 includes a plurality of touch lines 4 , the second touch line group 42 includes a plurality of touch lines 4 , and the compensation line group 50 includes a plurality of compensation lines 5 .

[0148] It can be understood that the average resistance of all touch traces 4 of the first touch trace group 41 is greater than the average resistance of all touch traces 4 of the second touch trace group 42. By electrically connecting at least one compensation line 5 of each compensation line group 50 to at least one touch trace 4 of the corresponding second touch trace group 42, the average resistance of all compensation touch lines 45 in the corresponding second touch trace group 42 and compensation line group 50 is approximately equal to the average resistance of all touch traces 4 of at least one first touch trace group 41.

[0149] Through the above configuration, the voltage drop generated by the voltage signal transmitted by all the compensation touch wires 45 in the corresponding second touch wire group 42 and the compensation wire group 50 is substantially equal to the voltage drop generated by the voltage signal transmitted by all the touch wires 4 in at least one first touch wire group 41. In the case where each group of touch wires 4 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 electrically connected to each group of touch wires 4.

[0150] For example, Figure 2 and Figure 4 As shown, the plurality of touch traces 4 include a plurality of first touch trace groups 41 and a plurality of second touch trace groups 42 , and the average resistance of all touch traces 4 in each first touch trace group 41 is greater than the average resistance of all touch traces 4 in each second touch trace group 42 .

[0151] The plurality of compensation lines 5 include a plurality of compensation line groups 50 corresponding to the plurality of second touch line groups 42 one by one, and each compensation line 5 of each compensation line group 50 is electrically connected to each touch line 4 of the corresponding second touch line group 42 .

[0152] The average resistance of all the compensation touch lines 45 in the corresponding second touch line group 42 and compensation line group 50 is substantially equal to the average resistance of all the touch lines 4 in one first touch line group 41 .

[0153] In some embodiments, the resistance of the compensation touch line 45 is substantially equal to the resistance of at least one touch line 4 of the at least one first touch line group 41 .

[0154] It can be understood that the resistance of each touch trace 4 of the second touch trace group 42 is less than the resistance of at least one touch trace 4 of at least one first touch trace group 41. By electrically connecting a compensation line 5 of each compensation line group 50 to a touch trace 4 of the corresponding second touch trace group 42, the resistance of each compensation touch line 45 in the corresponding second touch trace group 42 and the compensation line group 50 is approximately equal to the resistance of at least one touch trace 4 of at least one first touch trace group 41.

[0155] Exemplarily, the resistance of the compensation touch line 45 is substantially equal to the resistance of the plurality of touch lines 4 of a first touch line group 41 .

[0156] Through the above-mentioned configuration, the voltage drop generated by the voltage signal transmitted by the compensation touch line 45 in the corresponding second touch line group 42 and the compensation line group 50 is substantially equal to the voltage drop generated by the voltage signal transmitted by at least one touch line 4 of at least one first touch line group 41. When the compensation touch line 45 and the touch line 4 of the first touch line group 41 receive the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 electrically connected to the two.

[0157] In some embodiments, the resistance of each compensation touch line 45 in the corresponding second touch line group 42 and compensation line group 50 is substantially equal.

[0158] It can be understood that, when the second touch wiring group 42 includes multiple touch wirings 4 and the compensation wiring group 50 includes multiple compensation wirings 5, the wiring lengths of each touch wiring 4 in the second touch wiring group 42 are not equal, so that the resistance of each touch wiring 4 in the second touch wiring group 42 is not equal. By electrically connecting each touch wiring 4 to the corresponding compensation wiring 5, the resistance of each touch wiring 4 is compensated, so that the resistance of each compensation touch wiring 45 in the corresponding second touch wiring group 42 and compensation wiring group 50 is approximately equal.

[0159] Through the above configuration, the voltage drop generated by each compensation touch line 45 transmitting the voltage signal is substantially equal. When each compensation touch line 45 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 electrically connected to each compensation touch line 45.

[0160] In some embodiments, Figure 2 and Figure 4 As shown, the average length of all touch wires 4 of the second touch wire group 42 is smaller than the average length of all touch wires 4 of the at least one first touch wire group 41 .

[0161] It is understandable that when the first touch wiring group 41 includes one touch wiring 4 and the second touch wiring group 42 includes one touch wiring 4 , the length of the touch wiring 4 of the second touch wiring group 42 is less than the length of the touch wiring 4 of the first touch wiring group 41 .

[0162] like Figure 1 and Fig.23 As shown, the plurality of first touch control units 31 include the 1st to uth rows arranged in parallel along the second direction Y, where u≥2. Each first touch control unit 31 includes a plurality of first touch control electrodes 310 (assuming that it includes m second touch control electrodes 320, where m≥2), and a plurality of first connecting bridges 311, and two adjacent first touch control electrodes 310 are electrically connected via the first connecting bridges 311.

[0163] Fig.16 The first touch electrode R of the first touch unit 31 in the first row is shown. 11 , electrically connected to a touch line 4 of the first touch line group 41.

[0164] Fig.17 The first touch electrode R in the first column of the first touch unit 31 in the uth row is shown. u1 , electrically connected to a touch line 4 of the second touch line group 42.

[0165] It should be noted that, combined with Figure 1 , "R pq ” refers to the first touch electrode 310 in the qth column of the first touch unit 31 in the pth row, where p=1-u, q=1-m.

[0166] It can be seen that along the second direction Y, the position where the touch wiring 4 of the second touch wiring group 42 is electrically connected to the touch unit 3 is closer to the first fan-out area FA1 than the position where all the touch wiring 4 of the first touch wiring group 41 is electrically connected to the touch unit 3, so that the average length of all the touch wiring 4 of the second touch wiring group 42 is smaller than the average length of all the touch wiring 4 of at least one first touch wiring group 41, thereby making the average length of all the touch wiring 4 of the second touch wiring group 42 smaller than the average length of all the touch wiring 4 of at least one first touch wiring group 41.

[0167] Exemplarily, the average length of all the touch wires 4 of the second touch wire group 42 is smaller than the average length of all the touch wires 4 of the first touch wire group 41 .

[0168] In some embodiments, Figure 2 and Figure 4 As shown, the average length of all touch wires 4 of the second touch wire group 42 is smaller than the average length of all touch wires 4 of the at least one first touch wire group 41 .

[0169] like Figure 1 As shown, the plurality of second touch control units 32 include the 1st to mth columns arranged in parallel along the first direction X, where m≥2. Each second touch control unit 32 includes a plurality of second touch control electrodes 320 (assuming that n second touch control electrodes 320 are included, where n≥2), and a plurality of second connecting bridges 321, and two adjacent second touch control electrodes 320 are electrically connected via the second connecting bridges 321.

[0170] Fig.18 The nth second touch electrode T of the second touch unit 32 in the first column is shown. 1n , electrically connected to a touch line 4 of the first touch line group 41.

[0171] Fig.19 The nth second touch electrode T of the mth column second touch unit 32 is shown. mn , electrically connected to a touch line 4 of the second touch line group 42.

[0172] It should be noted that, combined with Figure 1 , "T xy ” refers to the second touch electrode 320 of the nth row and the second touch unit 32 of the mth column, where x=1-m and y=1-n.

[0173] It can be seen that the average length of all touch traces 4 of the second touch trace group 42 is smaller than the average length of all touch traces 4 of at least one first touch trace group 41, so that the average length of all touch traces 4 of the second touch trace group 42 is smaller than the average length of all touch traces 4 of at least one first touch trace group 41.

[0174] Exemplarily, the average length of all the touch wires 4 of the second touch wire group 42 is smaller than the average length of all the touch wires 4 of the first touch wire group 41 .

[0175] In some embodiments, the display substrate 1 includes a first conductive layer such as Fig. 22 As shown, the first conductive layer may be the first gate conductive layer 106, the second gate conductive layer 108, or the source-drain conductive layer 110 described above. In the case where the source-drain conductive layer 110 is a multilayer, the first conductive layer may be any layer of the multilayer. The following embodiments of the present disclosure are described by taking the first conductive layer as the source-drain conductive layer 110 as an example.

[0176] like Figure 2 and Figure 4 As shown, the source-drain conductive layer 110 includes a first power supply voltage line V1, and the first power supply voltage line V1 extends from the first fan-out area FA1 through the bending area BA and the second fan-out area FA2 in sequence to the binding area BD.

[0177] The plurality of touch lines 4 include touch connection segments 40 located in the first fan-out area FA1 and the second fan-out area FA2 , and the orthographic projection of the touch connection segment 40 on the substrate 10 at least partially overlaps with the orthographic projection of the first power supply voltage line V1 on the substrate 10 .

[0178] It should be noted that the first power supply voltage line V1 is used to transmit a first power supply voltage signal, and the first power supply voltage signal is a constant voltage signal. For example, the first power supply voltage line V1 may be a VSS line, which is electrically connected to the VSS line located in the peripheral area as described above, and the first power supply voltage line V1 is used to transmit a VSS signal, which is a constant low voltage signal.

[0179] Furthermore, the width of the first power supply voltage line V1 is set to be greater than that of a signal line used to transmit a non-constant voltage signal. Here, the signal line used to transmit a non-constant voltage signal may be, for example, a compensation line 5, a gate line, a data line, a clock signal line, etc. Such a design can reduce the loss or voltage drop generated during the transmission of the first power supply voltage signal.

[0180] In the above-mentioned embodiment of the present disclosure, by making the orthographic projection of the touch connection segment 40 on the substrate 10 at least partially overlap with the orthographic projection of the first power supply voltage line V1 on the substrate 10, the first power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby reducing the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by the touch connection segment 40.

[0181] For example, when the first conductive layer is the source-drain conductive layer 110 and the first power supply voltage line V1 is located in the source-drain conductive layer 110, the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 may include a gate line, a data line, or a clock signal line. In this case, through the above design, the first power supply voltage signal can be used to shield the voltage signal transmitted by the gate line, the data line, or the clock signal line, thereby reducing the mutual interference between these voltage signals and the voltage signal transmitted by the touch connection segment 40.

[0182] Similarly, in some embodiments, such as Figure 2 and Figure 4 As shown, the orthographic projections of the plurality of compensation lines 5 on the substrate 10 at least partially overlap with the orthographic projections of the first power supply voltage line V1 on the substrate 10. The first power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby weakening the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by the compensation line 5.

[0183] In some embodiments, Figure 2 and Figure 4As shown, the orthographic projection of at least one compensation line 5 on the substrate 10 is located within the orthographic projection range of the first power supply voltage line V1 on the substrate 10. It can be understood that by winding at least one compensation line 5 on the side of the first power supply voltage line V1 away from the substrate 10, the first power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby weakening the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by the at least one compensation line 5.

[0184] For example, Figure 2 and Figure 4 As shown, the orthographic projections of all compensation lines 5 on the substrate 10 are all within the orthographic projection range of the first power supply voltage line V1 on the substrate 10, which can reduce the mutual interference between the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 and the voltage signal transmitted by all compensation lines 5.

[0185] For example, Figure 6 and Fig.13 As shown, the orthographic projection of the partial compensation line 5 on the substrate 10 is located within the orthographic projection range of the first power supply voltage line V1 on the substrate 10, which can reduce the mutual interference between the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 and the voltage signal transmitted by the partial compensation line 5. In addition, the orthographic projection of the partial compensation line 5 on the substrate 10 extends beyond the orthographic projection range of the first power supply voltage line V1 on the substrate 10, for example, extends to the orthographic projection range of the second power supply voltage line V2 on the substrate 10.

[0186] In some embodiments, Figure 6 , Fig.11 and Fig.12 As shown, the source-drain conductive layer 110 further includes a second power supply voltage line V2, which extends from the first fan-out area FA1 through the bending area BA and the second fan-out area FA2 in sequence to the binding area BD.

[0187] The orthographic projection of at least one compensation line 5 on the substrate 10 partially overlaps with the orthographic projection of the first power supply voltage line V1 on the substrate 10 , and partially overlaps with the orthographic projection of the second power supply voltage line V2 on the substrate 10 .

[0188] It should be noted that the second power supply voltage line V2 is used to transmit a second power supply voltage signal, and the second power supply voltage signal is a constant voltage signal. For example, the second power supply voltage line V2 can be a VDD bus, which is electrically connected to the VDD line located in the display area AA, and the second power supply voltage line V2 is used to transmit a VDD signal, which is a constant high voltage signal.

[0189] In addition, the width of the second power supply voltage line V2 is set to be larger than the signal line used to transmit the non-constant voltage signal. Here, the signal line used to transmit the non-constant voltage signal may be, for example, the touch line 4, the compensation line 5, the gate line, the data line, the clock signal line, etc. Such a design can reduce the loss or voltage drop generated during the transmission of the second power supply voltage signal.

[0190] In the above-mentioned embodiment of the present disclosure, at least one compensation line 5 is wound on the side of the first power supply voltage line V1 away from the substrate 10, and extended to the side of the second power supply voltage line V2 away from the substrate 10, which can increase the winding length of the compensation line 5, thereby increasing the resistance of the compensation line 5.

[0191] Furthermore, the second power supply voltage line V2 is used to transmit a second power supply voltage signal, which is a constant voltage signal. By making the orthographic projection of at least one compensation line 5 on the substrate 10 partially overlap with the orthographic projection of the first power supply voltage line V1 on the substrate 10, and partially overlap with the orthographic projection of the second power supply voltage line V2 on the substrate 10, the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 can be shielded by the second power supply voltage signal; the voltage signal transmitted by the signal line located on the side of the second power supply voltage line V2 close to the substrate 10 can be shielded by the second power supply voltage signal, thereby reducing the mutual interference between the voltage signals transmitted by these signal lines and the voltage signal transmitted by the compensation line 5.

[0192] For example, when the first conductive layer is the source-drain conductive layer 110 and the second power supply voltage line V2 is located in the source-drain conductive layer 110, the signal line located on the side of the second power supply voltage line V2 close to the substrate 10 may include a gate line, a data line, or a clock signal line. In this case, through the above design, the second power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the second power supply voltage line V2 close to the substrate 10, thereby reducing the mutual interference between these voltage signals and the voltage signal transmitted by the touch connection segment 40.

[0193] In some embodiments, Figure 6 , Fig.11 and Fig.12 As shown, the orthographic projection of at least one compensation line 5 on the substrate 10 is within the orthographic projection range of the first power supply voltage line V1 on the substrate 10. In addition, the orthographic projection of at least one compensation line 5 on the substrate 10 partially overlaps with the orthographic projection of the first power supply voltage line V1 on the substrate 10, and partially overlaps with the orthographic projection of the second power supply voltage line V2 on the substrate 10.

[0194] In some embodiments, Figure 6 and Figure 7As shown, at least one compensation line 5 is bent once on a side of the first power supply voltage line V1 away from the substrate 10 , and is bent multiple times on a side of the second power supply voltage line V2 away from the substrate 10 .

[0195] In some embodiments, Fig.13 and Fig.14 As shown, at least one compensation line 5 is bent multiple times on a side of the first power supply voltage line V1 away from the substrate 10 , and is bent multiple times on a side of the second power supply voltage line V2 away from the substrate 10 .

[0196] In some embodiments, Figure 1 As shown, the display panel 100 has a center line L1 extending along the second direction Y, and two sides of the center line L1 are respectively referred to as a “first side L” and a “second side R”.

[0197] For example, in combination Figure 1 It can be seen that the “first side L” may refer to the left side of the midline L1 of the display panel 100 extending along the second direction Y; the “second side R” may refer to the right side of the midline L1 of the display panel 100 extending along the second direction Y.

[0198] The following describes the wiring design of the touch lines 4 on the first side L of the display panel 100 .

[0199] In some embodiments, Figure 1 and Figure 2 As shown, the first power voltage line V1 includes a first connection portion V11 located in the first fan-out area FA1, the bending area BA and the second fan-out area FA2, and the first connection portion V11 is located at a first side L of a midline L1 extending along the second direction Y of the display panel 100.

[0200] like Figure 2 and Figure 3 As shown, the multiple touch lines 4 include touch connection segments 40 located in the first fan-out area FA1 and the second fan-out area FA2, and the multiple touch lines 4 to which the touch connection segments 40 located within the orthographic projection range of the first connection portion V11 belong include at least one first-side first touch line group 410 and N first-side second touch line groups 420, where N≥2.

[0201] Among them, in the 1st to Nth first-side second touch wiring groups 420, the average resistance of all touch wirings 4 of each second touch wiring group 42 decreases successively. In the N compensation line groups 50 corresponding to the N first-side second touch wiring groups 42, that is, in the 1st to Nth compensation line groups 50, the average resistance of all compensation lines 5 of each compensation line group 50 increases successively. The i-th first-side second touch wiring group 420 is electrically connected to the i-th compensation line group 50, i=1~N.

[0202] By electrically connecting the i-th first-side second touch wiring group 420 with the i-th compensation line group 50, that is, connecting the first-side second touch wiring group 420 with a smaller average resistance of all touch wirings 4 with the compensation line group 50 with a larger average resistance of all compensation lines 5; connecting the first-side second touch wiring group 420 with a larger average resistance of all touch wirings 4 with the compensation line group 50 with a smaller average resistance of all compensation lines 5, the average resistance of each group of compensation touch lines 45 (corresponding to the first-side second touch wiring group 420 and the compensation line group 50) is roughly equal, and the voltage drop generated by the voltage signal transmitted by each group of compensation touch lines 45 is roughly equal. When each group of compensation touch lines 45 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch control unit 3 to which each group of compensation touch lines 45 is electrically connected.

[0203] For example, Figure 2 and Figure 3 As shown, the touch wirings 4 belonging to the touch connection segment 40 located within the orthographic projection range of the first connection portion V11 include a first-side first touch wiring group 410 , two first-side second touch wiring groups 420 , and two compensation line groups 50 .

[0204] The average resistance of all touch lines 4 in the first first-side second touch line group 420A is greater than the average resistance of all touch lines 4 in the second first-side second touch line group 420B. The first first-side second touch line group 420A is electrically connected to the first compensation line group 50A, the second first-side second touch line group 420B is electrically connected to the second compensation line group 50B, and the average resistance of all compensation lines 5 in the first compensation line group 50A is less than the average resistance of all compensation lines 5 in the second compensation line group 50B.

[0205] Exemplarily, in the first to Nth first-side second touch wiring groups 420, each first-side second touch wiring group 420 includes a touch wiring 4, and correspondingly, in the first to Nth compensation wiring groups 50, each compensation wiring group 50 includes a compensation wire 5. A touch wiring 4 in the i-th first-side second touch wiring group 420 is electrically connected to a compensation wire 5 in the i-th compensation wiring group 50.

[0206] In some embodiments, Figure 2 As shown, at least one first-side first touch wiring group 410 and N first-side second touch wiring groups 420 are arranged in sequence along the first direction X, and the N first-side second touch wiring groups 420 are closer to the center line L1 extending along the second direction Y of the display panel 100 relative to the at least one first-side first touch wiring group 410.

[0207] Understandably, reference Fig.16 and Fig.17 , and combined with Figure 1 and Figure 2 , along the second direction Y, the touch unit 3 electrically connected to at least one first-side first touch wiring group 410 is farther away from the first fan-out area FA1 than the touch unit 3 electrically connected to the N first-side second touch wiring groups 420. By making the N first-side second touch wiring groups 420 closer to the center line L1 extending along the second direction Y of the display panel 100 relative to the at least one first-side first touch wiring group 410, it is possible to avoid the touch wirings 4 in the N first-side second touch wiring groups 420 from crossing with the touch wirings 4 in the at least one first-side first touch wiring group 410.

[0208] like Figure 2 As shown, the N compensation line groups 50 are all located on one side of the midline L1 extending along the second direction Y of the display panel 100 close to at least one first side first touch line group 410, which can avoid the touch lines 4 in the N compensation line groups 50 from crossing with the touch lines 4 in at least one first side first touch line group 410, so as to facilitate the electrical connection between the touch lines 4 in the compensation line group 50 and the touch lines 4 in the first side second touch line group 420.

[0209] For example, Figure 2 As shown, a first-side first touch wiring group 410 and two first-side second touch wiring groups 420 are sequentially arranged along the first direction X, and the two first-side second touch wiring groups 420 are closer to the center line L1 of the display panel 100 extending along the second direction Y than the first-side first touch wiring group 410. The two compensation line groups 50 are both located on one side of the first-side first touch wiring group 410 close to the center line L1 of the display panel 100 extending along the second direction Y.

[0210] In some embodiments, Figure 2 As shown, the orthographic projections of the N compensation line groups 50 on the substrate 10 are all located within the orthographic projection range of the first connection portion V11 of the first power supply voltage line V1 on the substrate 10, so that all the compensation lines 5 in the N compensation line groups 50 are wound on the side of the first power supply voltage line V1 away from the substrate 10. The first power supply voltage signal transmitted by the first power supply voltage line V1 can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby weakening the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by the compensation line 5.

[0211] In some embodiments, Figure 6 and Fig.13 As shown, the second power voltage line V2 is located on a side of the first connection portion V11 close to a center line L1 of the display panel 100 extending along the second direction Y.

[0212] The N compensation line groups 50 include at least one first target compensation line group 51 and at least one second target compensation line group 52. The orthographic projection of the first target compensation line group 51 on the substrate 10 is located within the orthographic projection range of the first connection portion V11 on the substrate 10, so that the compensation line 5 in the first target compensation line group 51 is wound on the side of the first power supply voltage line V1 away from the substrate 10, which can weaken the mutual interference between the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 and the voltage signal transmitted by the compensation line 5 in the first target compensation line group 51.

[0213] like Figure 6 and Fig.13 As shown, the orthographic projection of the second target compensation line group 52 on the substrate 10 partially overlaps with the orthographic projection of the first connection portion V11 on the substrate 10 , and partially overlaps with the orthographic projection of the second power supply voltage line V2 on the substrate 10 .

[0214] By winding the compensation line 5 in the second target compensation line group 52 on the side of the first power supply voltage line V1 away from the substrate 10 and extending it to the side of the second power supply voltage line V2 away from the substrate 10, the winding length of the compensation line 5 in the second target compensation line group 52 can be increased, thereby increasing the resistance of the compensation line 5.

[0215] Furthermore, the first power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10; the second power supply voltage signal can be used to shield the voltage signal transmitted by the signal line located on the side of the second power supply voltage line 111 close to the substrate 10, thereby weakening the voltage signal transmitted by the signal line and preventing it from interfering with the voltage signal transmitted by the compensation line 5 in the second target compensation line group 52.

[0216] For example, Figure 6 and Fig.13 As shown, the N compensation line groups 50 include a first target compensation line group 51 (ie, the first compensation line group 50A) and a second target compensation line group 52 (ie, the second compensation line group 50B).

[0217] In some embodiments, Figure 6 and Fig.13 As shown, the first side second touch wiring group 420 corresponding to the second target compensation wiring group 52 is located on a side of the first side second touch wiring group 420 corresponding to the first target compensation wiring group 51 close to the middle line L1 extending along the second direction Y of the display panel 100 .

[0218] It is understandable that if Figure 1As shown, along the second direction Y, the touch unit 3 electrically connected to the first-side second touch wiring group 420 corresponding to the second target compensation line group 52 is closer to the first fan-out area FA1 than the touch unit 3 electrically connected to the first-side second touch wiring group 420 corresponding to the first target compensation line group 51. By making the first-side second touch wiring group 420 corresponding to the second target compensation line group 52 located on the side of the first-side second touch wiring group 420 corresponding to the first target compensation line group 51 close to the center line L1 extending along the second direction Y of the display panel 100, it is possible to avoid the compensation lines 5 in the second target compensation line group 52 from crossing the compensation lines 5 in the first target compensation line group 51.

[0219] In some embodiments, Figure 1 As shown, the multiple first touch units 31 are divided into multiple groups, each group of first touch units 31 includes one first touch unit 31; or, each group of first touch units 31 includes multiple first touch units 31 adjacent to each other in the second direction Y. The multiple groups of first touch units 31 correspond one-to-one to at least one first-side first touch wiring group 410 and N first-side second touch wiring groups 420, and at least one touch wiring 4 of each first-side first touch wiring group 410 and each first-side second touch wiring group 420 is electrically connected to at least one first touch unit 31 of the corresponding first touch unit group.

[0220] Along the second direction Y, at least one first touch unit group corresponding to at least one first-side first touch wiring group 410 and N first touch unit groups corresponding to the 1st to Nth first-side second touch wiring groups 420 are sequentially close to the first fan-out area FA1.

[0221] It can be understood that the first touch wiring group 410 on the first side is electrically connected to the first touch unit group farther away from the first fan-out area FA1, and the second touch wiring group 420 on the first side is electrically connected to the first touch unit group closer to the first fan-out area FA1, so that the average length of all touch wirings 4 in the first touch wiring group 410 on the first side is greater than the average length of all touch wirings 4 in the second touch wiring group 420 on the first side, thereby making the average resistance of all touch wirings 4 in the first touch wiring group 410 on the first side greater than the average resistance of all touch wirings 4 in the second touch wiring group 420 on the first side.

[0222] Furthermore, the average length of all touch traces 4 in each second touch trace group 42 in the 1st to Nth first-side second touch trace groups 420 is reduced in sequence, thereby reducing the average resistance of all touch traces 4 in each second touch trace group 42 in the 1st to Nth first-side second touch trace groups 420 in sequence.

[0223] For example, Figure 1As shown, multiple first touch units 31 are divided into multiple groups, each group of first touch units 31 includes multiple first touch units 31 adjacent to each other in the second direction Y, and the multiple groups of first touch units 31 correspond one-to-one to one first-side first touch wiring group 410 and two first-side second touch wiring groups 420, and each touch wiring 4 of each first-side first touch wiring group 410 and each first-side second touch wiring group 420 is electrically connected to each first touch unit 31 of the corresponding first touch unit group.

[0224] Along the second direction Y, the first-side first touch wiring group 410 corresponds to one first touch unit group, and the first to second first-side second touch wiring groups 420 correspond to two first touch unit groups that are sequentially close to the first fan-out area FA1.

[0225] In some embodiments, Figure 1 , Fig.16 and Fig.17 As shown, the display panel 100 includes a first peripheral area BB1 and a second peripheral area BB2 located on opposite sides of the display area AA in the first direction X, and multiple touch lines 4 of at least one first side first touch line group 410 and N first side second touch line groups 420 all extend along the first peripheral area BB1 to the first fan-out area FA1.

[0226] It can be understood that each touch line 4 of at least one first-side first touch line group 410 and N first-side second touch line groups 420 is electrically connected to each first touch unit 31 of the corresponding first touch unit group. In addition, the position where the first touch unit 31 is electrically connected to the touch line 4 is located on the side of the display area AA close to the first peripheral area BB1, so that the multiple touch lines 4 of at least one first-side first touch line group 410 and N first-side second touch line groups 420 can be extended along the first peripheral area BB1 to the first fan-out area FA1, thereby realizing the arrangement of the touch lines 4 in the first-side first touch line group 410 and the first-side second touch line group 420.

[0227] For example, Figure 1 As shown, the touch lines 4 of a first-side first touch line group 410 and two first-side second touch line groups 420 all extend along the first peripheral area BB1 toward the first fan-out area FA1.

[0228] The following describes the wiring design of the touch lines 4 on the second side R of the display panel 100 .

[0229] In some embodiments, Figure 1 and Figure 4As shown, the first power voltage line V1 includes a second connection portion V12 located in the first fan-out area FA1, the bending area BA and the second fan-out area FA2, and the second connection portion V12 is located at a second side R of a midline L1 extending along a second direction Y of the display panel 100.

[0230] As mentioned above, the plurality of touch lines 4 include touch connection segments 40 located in the first fan-out area FA1 and the second fan-out area FA2. Figure 1 and Figure 4 As shown, the touch connection segments 40 located within the orthographic projection range of the second connection portion V12, the multiple touch traces 4 to which these touch connection segments 40 belong include: at least one second-side first touch trace group 411 and at least one second-side second touch trace 421 arranged in sequence along the first direction X, and at least one second-side first touch trace group 411 is closer to the center line L1 of the display panel 100 extending along the second direction Y than the at least one second-side second touch trace group 421.

[0231] Understandably, reference Fig.18 and Fig.19 , and combined with Figure 1 and Figure 4 , along the first direction X, the touch unit 3 electrically connected to at least one second-side first touch wiring group 411 is closer to the center line L1 of the display panel 100 extending along the second direction Y than the touch unit 3 electrically connected to at least one second-side second touch wiring group 421. By making at least one second-side first touch wiring group 411 closer to the center line L1 of the display panel 100 extending along the second direction Y relative to at least one second-side second touch wiring group 421, it is possible to avoid crossing between the touch wiring 4 in at least one second-side first touch wiring group 411 and the touch wiring 4 in at least one second-side second touch wiring group 421.

[0232] For example, Figure 1 and Figure 4 As shown, the touch connection segments 40 are located within the orthographic projection range of the second connection portion V12, and the multiple touch traces 4 to which these touch connection segments 40 belong include: a second-side first touch trace group 411 and a second-side second touch trace 421 arranged in sequence along the first direction X, and the second-side first touch trace group 411 is closer to the center line L1 of the display panel 100 extending along the second direction Y than the second-side second touch trace group 421.

[0233] In some embodiments, Figure 4 and Figure 5As shown, at least one second touch wiring group 421 on the second side corresponds to at least one compensation line group 50 , and the orthographic projection of the at least one compensation line group 50 on the substrate 10 is located within the orthographic projection range of the second connection portion V12 of the first power voltage line V1 on the substrate 10 .

[0234] Through the routing design of the above-mentioned compensation line group 50, all the compensation lines 5 in at least one compensation line group 50 are wound on the side of the first power supply voltage line V1 away from the substrate 10. The first power supply voltage signal transmitted by the first power supply voltage line V1 can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby weakening the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by the compensation line 5.

[0235] For example, Figure 4 and Figure 5 As shown, a second touch wiring group 421 on the second side corresponds to a compensation line group 50 , and the orthographic projection of the compensation line group 50 on the substrate 10 is located within the orthographic projection range of the second connection portion V12 of the first power voltage line V1 on the substrate 10 .

[0236] In some embodiments, Figure 1 As shown, the plurality of second touch units 32 are divided into a plurality of groups, each group of second touch units 32 includes one second touch unit 32; or, each group of second touch units 32 includes a plurality of second touch units 32 adjacent to each other in the first direction X. The plurality of groups of second touch units 32 correspond one-to-one to at least one second-side first touch wiring group 411 and at least one second-side second touch wiring group 421. At least one touch wiring 4 of each second-side first touch wiring group 411 and each second-side second touch wiring group 421 is electrically connected to at least one second touch unit 32 of the corresponding second touch unit group.

[0237] Along the first direction X and the direction U pointing from the first connection portion V11 to the second connection portion V12, at least one second touch unit group corresponding to at least one second side first touch wiring group 411 and at least one second touch unit group corresponding to at least one second side second touch wiring group 421 are arranged in sequence.

[0238] Understandably, reference Fig.18 and Fig.19 , and combined with Figure 1 and Figure 4The first touch wiring group 411 on the second side is electrically connected to the second touch unit group farther away from the second connection portion V12, and the second touch wiring group 421 on the second side is electrically connected to the second touch unit group closer to the second connection portion V12, so that the average length of all touch wirings 4 in the first touch wiring group 411 on the second side is greater than the average length of all touch wirings 4 in the second touch wiring group 421 on the second side, thereby making the average resistance of all touch wirings 4 in the first touch wiring group 411 on the second side greater than the average resistance of all touch wirings 4 in the second touch wiring group 421 on the second side.

[0239] For example, Figure 1 As shown, the plurality of second touch units 32 are divided into a plurality of groups, and each group of second touch units 32 includes a plurality of second touch units 32 adjacent to each other in the first direction X. The plurality of groups of second touch units 32 correspond one to one with a second-side first touch wiring group 411 and one second-side second touch wiring group 421. Each touch wiring 4 of each second-side first touch wiring group 411 and each second-side second touch wiring group 421 is electrically connected to each second touch unit 32 of the corresponding second touch unit group.

[0240] Along the first direction X and the direction U pointing from the first connection portion V11 to the second connection portion V12, a second touch unit group corresponding to the second side first touch wiring group 411 and a second touch unit group corresponding to the second side second touch wiring group 421 are sequentially arranged.

[0241] In some embodiments, Figure 1 , Fig.18 and Fig.19 As shown, the display panel 100 includes a third peripheral area BB3 and a fourth peripheral area BB4 located on opposite sides of the display area AA in the second direction Y, and the first fan-out area FA1, the bending area BA, the second fan-out area FA2 and the binding area BD are located in the fourth peripheral area BB4.

[0242] The touch wirings 4 in at least one second-side first touch wiring group 411 and at least one second-side second touch wiring group 421 are all located in the fourth peripheral area BB4.

[0243] It can be understood that each touch wiring 4 in at least one second-side first touch wiring group 411 and at least one second-side second touch wiring group 421 is electrically connected to each second touch unit 32 of the corresponding second touch unit group, and the position where each touch wiring 4 is electrically connected to each second touch unit 32 is located on the side of the display area AA close to the fourth peripheral area BB4. Therefore, at least one second-side first touch wiring group 411 and multiple touch wirings 4 in at least one second-side second touch wiring group 421 are arranged in the fourth peripheral area BB4, which can reduce the wiring length of the touch wiring 4 in the second-side first touch wiring group 411 and the second-side second touch wiring group 421.

[0244] For example, Figure 1 As shown, a plurality of touch traces 4 in a second side first touch trace group 411 and a plurality of touch traces 4 in a second side second touch trace group 421 are both located in the fourth peripheral area BB4.

[0245] In some embodiments, one end of each second touch unit 32 at both ends along the second direction Y is electrically connected to the touch trace 4 to receive a voltage signal from the touch trace 4. For example, along the second direction Y, one end of each second touch unit 32 close to the first fan-out area FA1 is electrically connected to the touch trace 4. For another example, along the second direction Y, one end of each second touch unit 32 away from the first fan-out area FA1 is electrically connected to the touch trace 4.

[0246] In addition, in some other embodiments, Figure 18 to Figure 21 As shown, two ends of each second touch unit 32 along the second direction Y are electrically connected to a touch wire 4 , respectively, so that both ends of the second touch unit 32 can receive a voltage signal from the touch wire 4 .

[0247] like Fig.19 , Fig. 20 and Fig.21 As shown, the plurality of touch lines 4 further include a third touch line group 43 , and at least one touch line 4 of the third touch line group 43 is electrically connected to at least one second touch unit 32 .

[0248] The touch lines 4 in the third touch line group 43 are gathered from the third peripheral area BB3 through the second peripheral area BB2, the first fan-out area FA1, the bending area BA and the second fan-out area FA2 in sequence to the binding area BD.

[0249] It can be understood that, along the second direction Y, one end of each second touch unit 32 close to the first fan-out area FA1 is electrically connected to a touch line 4 in the second-side first touch line group 411 or the second-side second touch line group 421. One end of each second touch unit 32 away from the first fan-out area FA1 is electrically connected to a touch line 4 in the third touch line group 43.

[0250] Furthermore, the position at which at least one touch wiring 4 of the third touch wiring group 43 is electrically connected to at least one second touch unit 32 is located on the side of the display area AA close to the third peripheral area BB3. Therefore, the touch wiring 4 in the third touch wiring group 43 is connected from the third peripheral area BB3 to the binding area BD through the second peripheral area BB2, the first fan-out area FA1, the bending area BA and the second fan-out area FA2 in sequence, thereby realizing the arrangement of the touch wiring 4 in the third touch wiring group 43.

[0251] For example, Fig. 20 and Fig.21 As shown, each touch-sensing wire 4 of the third touch-sensing wire group 43 is electrically connected to each second touch-sensing unit 32 .

[0252] In some embodiments, Figure 4 As shown, the orthographic projection of the part of at least one touch line 4 of the third touch line group 43 located in the first fan-out area FA1 and the second fan-out area FA2 on the substrate 10 is located within the orthographic projection range of the first power supply voltage line V1 on the substrate 10 .

[0253] Through the routing design of the above-mentioned third touch routing group 43, the first power supply voltage signal transmitted by the first power supply voltage line V1 can be used to shield the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10, thereby weakening the mutual interference between the voltage signal transmitted by the signal line and the voltage signal transmitted by at least one touch routing line 4 of the third touch routing group 43.

[0254] For example, Figure 4 As shown, all the touch routing lines 4 of the third touch routing group 43, and the orthographic projections of the parts of all the touch routing lines 4 located in the first fan-out area FA1 and the second fan-out area FA2 on the substrate 10, are located within the orthographic projection range of the first power supply voltage line V1 on the substrate 10, which can weaken the mutual interference between the voltage signal transmitted by the signal line located on the side of the first power supply voltage line V1 close to the substrate 10 and the voltage signal transmitted by all the touch routing lines 4 of the third touch routing group 43.

[0255] In some embodiments, Figure 4As shown, the third touch wiring group 43 is located in the portion of the fourth peripheral area BB4 , which is farther away from the center line L1 of the display panel 100 extending along the second direction Y than the at least one second side second touch wiring group 421 .

[0256] It is understandable that, combined with Figure 1 and Figure 4 The touch lines 4 in the third touch line group 43 extend from the third peripheral area BB3 through the second peripheral area BB2 to the fourth peripheral area BB4. The above-mentioned routing design of the third touch line group 43 can avoid the touch lines 4 in the third touch line group 43 from crossing with the touch lines 4 in at least one of the second touch line groups 421 on the second side.

[0257] In some embodiments, Figure 4 As shown, the multiple touch lines 4 include touch connection segments 40 located in the first fan-out area FA1 and the second fan-out area FA2, and the multiple touch lines 4 belonging to the touch connection segments 40 located within the orthographic projection range of the second connection portion V12 include M second-side second touch line groups 421, M≥2.

[0258] Among them, in the 1st to the Mth second-side second touch wiring groups 421, the average resistance of all touch wirings 4 of each second touch wiring group 42 decreases successively. In the M compensation line groups 50 corresponding to the M second-side second touch wiring groups 421, that is, in the 1st to the Mth compensation line groups 50, the average resistance of all compensation lines 5 of each compensation line group 50 increases successively. The jth second-side second touch wiring group 421 is electrically connected to the jth compensation line group 50, j=1~M.

[0259] By electrically connecting the jth second-side second touch wiring group 421 with the jth compensation line group 50, that is, the second-side second touch wiring group 421 with a smaller average resistance of all touch wirings 4 is electrically connected to the compensation line group 50 with a larger average resistance of all compensation lines 5; the second-side second touch wiring group 421 with a larger average resistance of all touch wirings 4 is electrically connected to the compensation line group 50 with a smaller average resistance of all compensation lines 5, so that the average resistance of each group of compensation touch lines 45 (corresponding to the second-side second touch wiring group 421 and the compensation line group 50) is roughly equal, and the voltage drop generated by the voltage signal transmitted by each group of compensation touch lines 45 is roughly equal. When each group of compensation touch lines 45 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 to which each group of compensation touch lines 45 is electrically connected.

[0260] For example, Figure 4It shows that the multiple touch lines 4 belonging to the touch connection segment 40 located within the orthographic projection range of the second connection portion V12 include a second-side second touch line group 421 , and one second-side second touch line group 421 corresponds to one compensation line group 50 .

[0261] It can be understood that, among the touch lines 4 in the second-side first touch line group 411, the resistance of the touch lines 4 close to the second connection portion V12 is smaller than the resistance of the touch lines 4 far from the second connection portion V12. Therefore, some of the touch lines 4 close to the second connection portion V12 in the second-side first touch line group 411 can be compensated, that is, one or more second-side second touch line groups 421 can be further divided from the second-side first touch line group 411 and electrically connected to the compensation line group 50.

[0262] Exemplarily, in the first to M-th second-side second touch wiring groups 421, each second-side second touch wiring group 421 includes a touch wiring 4, and correspondingly, in the first to M-th compensation wiring groups 50, each compensation wiring group 50 includes a compensation wire 5. A touch wiring 4 in the j-th second-side second touch wiring group 421 is electrically connected to a compensation wire 5 in the j-th compensation wiring group 50.

[0263] In some embodiments, Fig. 22 As shown, the touch function layer T includes an electrode layer 201, a first insulating layer 202 and a bridging layer 203 stacked on the display substrate 1, the first insulating layer 202 is located between the electrode layer 201 and the bridging layer 203, and the bridging layer 203 is located on the side of the electrode layer 201 away from the display substrate 1.

[0264] like Fig. 22 As shown, a plurality of first touch electrodes 310 , a plurality of second touch electrodes 320 and a plurality of first connection bridges 311 are disposed on the electrode layer 201 , that is, the first touch electrodes 310 , the second touch electrodes 320 and the first connection bridges 311 are disposed on the same layer. A plurality of second connection bridges 321 are disposed on the bridge layer 203 .

[0265] Along the first direction X, every two adjacent first touch electrodes 310 are directly electrically connected via the first connection bridge 311. Along the second direction Y, the second connection bridge 321 passes through different via holes H in the first insulating layer 202 to electrically connect to two adjacent second touch electrodes 320.

[0266] In some embodiments, Fig.23 and Fig.24As shown, the first touch electrodes 310 , the second connection bridges 321 and the second touch electrodes 320 are arranged on the electrode layer 201 , that is, the first touch electrodes 310 , the second connection bridges 321 and the second touch electrodes 320 are arranged on the same layer. The first connection bridges 311 are arranged on the bridging layer 203 .

[0267] Along the first direction X, the first connection bridge 311 passes through different via holes H in the first insulating layer 202 to electrically connect two adjacent first touch electrodes 310. Along the second direction Y, every two adjacent second touch electrodes 320 are directly electrically connected via the second connection bridge 321.

[0268] In other embodiments, Fig.25 and Fig.26 As shown, the electrode layer 201 is located on a side of the bridge layer 203 away from the display substrate 1 , the first insulating layer 202 is located between the electrode layer 201 and the bridge layer 203 , and a plurality of via holes H are provided in the first insulating layer 202 .

[0269] The first touch electrodes 310 , the second touch electrodes 320 and the first connection bridges 311 are disposed on the electrode layer 201 , that is, the first touch electrodes 310 , the second touch electrodes 320 and the first connection bridges 311 are disposed on the same layer. The second connection bridges 321 are disposed on the bridge layer 203 .

[0270] Along the first direction X, two adjacent first touch electrodes 310 are directly electrically connected via the first connection bridge 311. Along the second direction Y, two adjacent second touch electrodes 320 are electrically connected to the second connection bridge 321 through different via holes H in the first insulating layer 202, respectively.

[0271] In some embodiments, Fig. 27 and Fig.28 As shown, a plurality of first touch electrodes 310 , a plurality of second touch electrodes 320 and a plurality of second connection bridges 321 are disposed on the electrode layer 201 , that is, the first touch electrodes 310 , the second touch electrodes 320 and the second connection bridges 321 are disposed on the same layer.

[0272] Along the first direction X, two adjacent first touch electrodes 310 are electrically connected to the first connection bridge 311 through different via holes H in the first insulating layer 202 . Along the second direction Y, two adjacent second touch electrodes 320 are directly electrically connected through the second connection bridge 321 .

[0273] In some embodiments, Figure 7 and Figure 8As shown, the portion of the touch routing 4 located in the second fan-out area FA2 includes a first touch sub-line 4A arranged in the electrode layer 201, and a second touch sub-line 4B arranged in the bridge layer 203. The first touch sub-line 4A and the second touch sub-line 4B are electrically connected through at least one via H in the first insulating layer 202 arranged between the electrode layer 201 and the bridge layer 203.

[0274] It should be noted that the portion of the touch line 4 located outside the second fan-out area FA2 also includes a first touch sub-line 4A arranged on the electrode layer 201, and a second touch sub-line 4B arranged on the bridging layer 203, that is, the touch line 4 is formed by the first touch sub-line 4A and the second touch sub-line 4B being connected in parallel, which can reduce the resistance of the touch line 4, thereby reducing the voltage drop caused by the touch line 4 transmitting the voltage signal.

[0275] In some embodiments, Figure 7 and Figure 8 As shown, the compensation line 5 includes a first compensation sub-line 5A arranged in the electrode layer 201 and a second compensation sub-line 5B arranged in the bridge layer 203. The first compensation sub-line 5A and the second compensation sub-line 5B are arranged in parallel, that is, the compensation line 5 is a double-layer metal routing.

[0276] The first compensation sub-line 5A is directly electrically connected to the first touch sub-line 4A of the touch line 4 of the second touch line group 42, and the second compensation sub-line 5B is directly electrically connected to the second touch sub-line 4B of the touch line 4 of the second touch line group 42, and the resistance of the touch line 4 of the second touch line group 42 is compensated through the compensation line 5.

[0277] In some embodiments, Figure 8 As shown, the first compensation sub-line 5A and the second compensation sub-line 5B of the compensation line 5 are electrically connected through at least one via H in the first insulating layer 202 to achieve parallel connection of the first compensation sub-line 5A and the second compensation sub-line 5B.

[0278] In some embodiments, Fig. 9 As shown, the compensation line 5 is disposed on the electrode layer 201 , and is directly electrically connected to the first touch sub-line 4A of the touch wiring 4 of the second touch wiring group 42 .

[0279] Or, if Fig.10 As shown, the compensation line 5 is disposed on the bridge layer 203 , and is directly electrically connected to the second touch sub-line 4B of the touch line 4 of the second touch line group 42 .

[0280] It should be noted that the reference Figure 2 and Figure 3The compensation line 5 includes a main line segment 501 and a connecting line segment 502. In the above embodiments of the present disclosure, the main line segment 501 of the compensation line 5 is used as an example for description, that is, the main line segment 501 of the compensation line 5 is set in the electrode layer 201, or the main line segment 501 is set in the bridge layer 203. In addition, referring to Figure 7 The film layer structure of the connecting line segment 502 of the compensation line 5 is the same as that of the touch line 4, both of which are double-layer metal lines.

[0281] It can be understood that, compared with the compensation line 5 which is a double-layer metal wiring, Fig. 9 and Fig.10 As shown, the compensation line 5 is a single-layer metal routing line, which can increase the resistance of the compensation line 5, so that under the premise of meeting the resistance value compensation requirements, the winding length of the compensation line 5 can be reduced and the space area required for winding the compensation line 5 can be reduced.

[0282] As can be seen from the foregoing, the average resistance of all touch lines 4 of the first touch line group 41 is greater than the average resistance of all touch lines 4 of the second touch line group 42. In order to reduce the difference between the average resistances, it is necessary to use compensation lines 5 to compensate the resistance values ​​of all touch lines 4 of the second touch line group 42. Based on this, in the process of designing the compensation line 5, the following formula (1-1) can be used to calculate the line length L of the compensation line 5.

[0283]

[0284] Among them, "R max ” represents the resistance of the touch line 4 in the first touch line group 41; “R min ” represents the resistance of the touch line 4 in the second touch line group 42; “W” represents the line width of the compensation line 5; and “X” represents the square resistance of the compensation line 5.

[0285] In some embodiments, Figure 8 As shown, the compensation line 5 includes a first compensation sub-line 5A and a second compensation sub-line 5B that are electrically connected. In this case, the square resistance X of the compensation line 5 can be calculated using the following formula (1-2).

[0286]

[0287] Here, “a” represents the square resistance of the first compensation sub-line 5A; and “b” represents the square resistance of the second compensation sub-line 5B.

[0288] In addition, the following formula (1-3) is used to calculate the routing length L of the compensation line 5.

[0289]

[0290] For example, the line width W of the compensation line 5 is 3.5 μm, the square resistance of the first compensation sub-line 5A is 0.186, and the square resistance of the second compensation sub-line 5B is 0.098. Then, the line length L of the compensation line 5 is L=54.5 (R max -R min ).

[0291] In some embodiments, Fig. 9 As shown, the compensation line 5 is arranged in the electrode layer 201. In this case, the following formula (1-4) can be used to calculate the routing length L of the compensation line 5.

[0292]

[0293] For example, the line width W of the compensation line 5 is 3.5 μm, the square resistance of the compensation line 5 is 0.186, and the line length L of the compensation line 5 is L=18.8 (R max -R min ).

[0294] In some embodiments, Fig.10 As shown, the compensation line 5 is arranged in the bridge layer 203 . In this case, the following formula (1-5) can be used to calculate the routing length L of the compensation line 5 .

[0295]

[0296] For example, the line width W of the compensation line 5 is 3.5 μm, the square resistance of the compensation line 5 is 0.098, and the line length L of the compensation line 5 is L=35.7 (R max -R min ).

[0297] In some embodiments, Figure 3 and Figure 5 As shown, the compensation line 5 is in a fold line shape, and the compensation line 5 includes a plurality of fold line segments, at least one of which extends along the first direction X or the second direction Y. The first direction X and the second direction Y intersect.

[0298] By bending the compensation line 5 at least once, the compensation line 5 is in a zigzag shape, and the arrangement of the compensation line 5 is more compact, which is conducive to winding the compensation line 5 in the limited space of the second fan-out area FA2, thereby increasing the winding length of the compensation line 5 and increasing the resistance of the compensation line 5.

[0299] Furthermore, at least one fold line segment of the compensation line 5 extends along the first direction X or the second direction Y, that is, part of the fold line segments of the compensation line 5 extends along the first direction X, and part of the fold line segments extends along the second direction Y, so that the arrangement of the compensation line 5 is neat and regular.

[0300] Exemplarily, the first direction X is substantially perpendicular to the second direction Y. In this case, the folded line segment of the compensation line 5 extending along the first direction X is substantially perpendicular to the folded line segment extending along the second direction Y, that is, the bending angle of the compensation line 5 each time is substantially 90°.

[0301] In some embodiments, Fig.14 As shown, the length of the broken line segment of the compensation line 5 extending along the first direction X is greater than the length of the broken line segment of the compensation line 5 extending along the second direction Y.

[0302] Or, if Fig.15 As shown, the length of the broken line segment of the compensation line 5 extending along the second direction Y is greater than the length of the broken line segment of the compensation line 5 extending along the first direction X.

[0303] In some embodiments, Figure 3 and Figure 5 As shown, one end of the main body segment 501 of the compensation line 5 is electrically connected to the corresponding touch line 4, and after the main body segment 501 is bent at least once, the other end thereof is electrically connected to the connecting segment 502. The connecting segment 502 extends away from one end of the main body segment 501 to the binding area BD.

[0304] Among them, the width of the main line segment 501 is smaller than the width of the touch line 4, so that the cross-sectional area of ​​the main line segment 501 is smaller than the cross-sectional area of ​​the touch line 4. According to the law of resistance: the resistance of a conductor is proportional to its length and resistivity, and inversely proportional to its cross-sectional area. When the length and resistivity of the main line segment 501 are the same as those of the touch line 4, the resistance of the main line segment 501 is greater than the resistance of the touch line 4. Under the premise that the resistance value of the main line segment 501 meets the compensation requirements, the winding length of the main line segment 501 of the compensation line 5 can be reduced.

[0305] In some embodiments, Figure 3 and Figure 5 As shown, the width of the main line segment 501 is smaller than the width of the connecting line segment 502 .

[0306] According to the above description, the film structure of the connecting line segment 502 of the compensation line 5 is the same as that of the touch line 4, that is, the main line segment 501 of the compensation line 5 is bent to compensate the resistance of the touch line 4; the connecting line segment 502 is used to bind the touch line 4 to receive and transmit voltage signals to the touch line 4. Therefore, the connecting line segment 502 does not need to compensate the resistance of the touch line 4, and the width of the connecting line segment 502 can be substantially equal to the width of the touch line 4, so that the width of the main line segment 501 is smaller than the width of the connecting line segment 502.

[0307] In some embodiments, Figure 3 and Figure 5As shown, the width of the main line segment 501 of the compensation line 5 is smaller than the width of the touch line 4 , and the width of the main line segment 501 is smaller than the width of the connecting line segment 502 .

[0308] In some embodiments, the width of the main line segment 501 of the compensation line 5 ranges from 2.7 μm to 4.3 μm, for example, the width is 2.7 μm, 2.8 μm, 3.5 μm, 3.8 μm or 4.3 μm.

[0309] The width of the connecting line segment 502 of the compensation line 5 ranges from 9 μm to 17 μm, for example, the width is 9 μm, 11 μm, 13 μm, 15 μm or 17 μm.

[0310] The width of the touch trace 4 ranges from 3.5 μm to 50 μm, for example, the width is 3.5 μm, 20.52 μm, 26.75 μm, 40 μm or 50 μm.

[0311] In some embodiments, Figure 2 and Figure 4 As shown, the touch trace 4 includes a touch connection segment 40 disposed in the touch function layer T, and a transition segment 401 disposed in the first conductive layer (for example, the first conductive layer may be the source-drain conductive layer 110). The touch connection segment 40 includes a first sub-touch connection segment 402 disposed in the first fan-out area FA1, and a second sub-touch connection segment 403 disposed in the second fan-out area FA2, and the transition segment 401 is disposed in the bending area BA.

[0312] One end of the transition segment 401 is electrically connected to the first sub-touch connection segment 402 through a via hole in the insulating layer between the first conductive layer and the touch function layer T. The other end of the transition segment 401 is electrically connected to the second sub-touch connection segment 403 through a via hole in the insulating layer between the first conductive layer and the touch function layer T.

[0313] It should be noted that the reference Fig. 22 The insulating layer between the first conductive layer and the touch function layer T may include one or more of a passivation layer 111, a planar layer 112, a pixel defining layer 114, a support portion 115, a first inorganic encapsulation sublayer 1171, an organic encapsulation sublayer 1172 and a second inorganic encapsulation sublayer 1173.

[0314] Combination Fig. 22It can be known that along the thickness direction Z of the display panel 100, the source-drain conductive layer 110 is the middle film layer of the multiple film layers of the display panel 100, and the touch function layer T is the film layer close to the surface of the display panel 100. According to the above, the display panel 100 is bent in the bending area BA, so that the second fan-out area FA2 and the binding area BD are bent to the non-display side of the display panel 100. During the bending process of the display panel 100, the stress of the film layer close to the surface of the display panel 100 is more concentrated, and the stress of the middle film layer is more dispersed. By setting the transition section 401 of the touch wiring 4 located in the bending area BA on the source-drain conductive layer 110, the problem of the touch wiring 4 being broken due to stress concentration can be avoided.

[0315] In some embodiments, in combination Figure 5 , Fig.18 and Fig.19 The touch function layer T also includes a plurality of first shielding lines (Guard) G1.

[0316] Among them, Fig.18 As shown, at least one first shielding line G1 is located between the second touch wiring group 420 on the first side and the first touch wiring group 411 on the second side, weakening the mutual influence between the voltage signal transmitted by the touch wiring 4 of the second touch wiring group 420 on the first side and the voltage signal transmitted by the touch wiring 4 of the first touch wiring group 411 on the second side, thereby playing a role of shielding the signal.

[0317] like Figure 5 and Fig.19 As shown, at least one first shielding line G1 is located between the second touch wiring group 421 and the third touch wiring group 43 on the second side, weakening the mutual influence between the voltage signal transmitted by the touch wiring 4 of the second touch wiring group 421 on the second side and the voltage signal transmitted by the touch wiring 4 of the third touch wiring group 43, thereby playing a role in shielding the signal.

[0318] In some embodiments, in combination Fig.16 , Fig.18 and Fig. 20 , the touch function layer T also includes a plurality of second shielding lines G2.

[0319] Among them, Fig.18 As shown, at least one second shielding line G2 is located on a side of the first touch wiring group 410 on the first side away from the display area AA.

[0320] It can be understood that the touch line 4 farthest from the display area AA in the first touch line group 410 on the first side (referred to as the "outermost touch line"), except for the outermost touch line, all other touch lines 4 in the first touch line group 410 on the first side are provided with touch lines 4 on the side away from the display area AA. Therefore, by providing a second shielding line G2 on the side of the outermost touch line away from the display area AA, and the voltage signal transmitted by the second shielding line G2 is the same as the voltage signal of the touch line 4, the working environment of the outermost touch line is roughly the same as the working environment of the other touch lines 4, thereby avoiding different voltage drops between the outermost touch line and the other touch lines 4 in the process of transmitting the voltage signal.

[0321] Some embodiments of the present disclosure also provide a display panel, such as Figure 1 As shown, the display panel 100 includes a display area AA, and a first fan-out area FA1, a bending area BA, a second fan-out area FA2 and a binding area BD located on one side of the display area AA and sequentially away from the display area AA, wherein the area of ​​the second fan-out area FA2 is larger than that of the first fan-out area FA1.

[0322] It can be understood that the display panel 100 is bent at the bending area BA, so that the second fan-out area FA2 and the binding area BD are bent to the non-display side of the display panel 100, so that the first fan-out area FA1 corresponds to the frame of the display device. By setting the area of ​​the first fan-out area FA1 to be smaller than the area of ​​the second fan-out area FA2, it is helpful to reduce the width of the frame of the display device corresponding to the first fan-out area FA1, thereby facilitating a narrow frame of the display device.

[0323] like Figure 1 As shown, the display panel 100 includes a display substrate 1 and a touch function layer T disposed in a display area AA.

[0324] The display substrate 1 includes a first power supply voltage line V1, which includes a first connection portion V11 and a second connection portion V12 located in the first fan-out area FA1, the bending area BA, and the second fan-out area FA2, and the first connection portion V11 and the second connection portion V12 are respectively located on opposite sides of a center line L1 extending along a second direction Y of the display panel 1. The second direction Y is substantially perpendicular to a boundary line between the first fan-out area FA1 and the display area AA.

[0325] The touch function layer T includes a plurality of touch units 3 disposed in the display area AA, for realizing touch control of the display device.

[0326] like Figure 1 As shown, the touch function layer T further includes a plurality of touch traces 4, and each touch unit 3 is electrically connected to at least one touch trace 4. The touch trace 4 is configured to transmit a voltage signal (sensor signal) to the touch unit 3 electrically connected thereto.

[0327] Exemplarily, each touch control unit 3 is electrically connected to a touch control wire 4 , and each touch control wire 4 transmits a voltage signal to the touch control unit 3 electrically connected thereto.

[0328] like Figure 1 and Figure 2 As shown, the plurality of touch lines 4 extend from the display area AA through the first fan-out area FA1 and the bending area BA to the second fan-out area FA2. The plurality of touch lines 4 include at least one first touch line group 41 and at least one second touch line group 42. The average resistance of all touch lines 4 in the first touch line group 41 is greater than the average resistance of all touch lines 4 in the second touch line group 42.

[0329] For example, Figure 2 and Figure 4 As shown, the plurality of touch traces 4 include a plurality of first touch trace groups 41 and a plurality of second touch trace groups 42 , and the average resistance of all touch traces 4 in each first touch trace group 41 is greater than the average resistance of all touch traces 4 in each second touch trace group 42 .

[0330] like Figure 1 and Figure 2 As shown, all the touch-sensing wires 4 of the first touch-sensing wire group 41 are gathered in the binding area BD.

[0331] like Figure 2 and Figure 4 As shown, the touch function layer T further includes a plurality of compensation lines 5, which are bent at least once in the second fan-out area FA2 and gathered in the binding area BD. The plurality of compensation lines 5 include at least one compensation line group 50 corresponding to at least one second touch line group 42, and at least one compensation line 5 of each compensation line group 50 is electrically connected to at least one touch line 4 of the corresponding second touch line group 42.

[0332] It is understandable that the plurality of compensation lines 5 are bent at least once in the second fan-out area FA2 . By bending the compensation lines 5 in a limited space, the routing length of the compensation lines 5 can be increased, thereby increasing the resistance of the compensation lines 5 .

[0333] Exemplarily, the plurality of compensation lines 5 are bent multiple times in the second fan-out area FA2 , so that the routing length of the compensation lines 5 can be increased.

[0334] Moreover, the average resistance of all the touch wirings 4 of the first touch wiring group 41 is greater than the average resistance of all the touch wirings 4 of the second touch wiring group 42. By electrically connecting the touch wirings 4 of the second touch wiring group 42 to the compensation line 5, the resistance of all the touch wirings 4 of the second touch wiring group 42 can be compensated to reduce the difference between the average resistance of all the touch wirings 4 of the second touch wiring group 42 and the average resistance of all the touch wirings 4 of the first touch wiring group 41.

[0335] Exemplarily, the plurality of compensation lines 5 include a plurality of compensation line groups 50 corresponding one-to-one to the plurality of second touch line groups 42 , and each compensation line 5 of each compensation line group 50 is electrically connected to each touch line 4 of the corresponding second touch line group 42 .

[0336] Among them, multiple first touch wiring groups 41 and multiple second touch wiring groups 42 include: a first side first touch wiring group 410, two first side second touch wiring groups 420, a second side first touch wiring group 411 and a second side second touch wiring group 421 arranged in sequence along the first direction X and in the direction U from the first connection part V11 to the second connection part V12.

[0337] The orthographic projections of the first touch wiring group 410 on the first side and the second touch wiring group 420 on the first side on the display substrate 1 overlap with the first connection portion V11 of the first power supply voltage line V1, respectively. The orthographic projections of the first touch wiring group 411 on the second side and the second touch wiring group 421 on the second side on the display substrate 1 overlap with the second connection portion V12 of the first power supply voltage line V1, respectively.

[0338] It can be understood that in the above-mentioned display panel 100 of the present invention, the touch lines 4 are divided into five groups, three groups of touch lines 4 are located on the first side L, and two groups of touch lines 4 are located on the second side R. The two groups of touch lines 4 on the first side L are compensated for resistance, and the one group of touch lines 4 on the second side R is compensated for resistance.

[0339] In the above-mentioned embodiment of the present disclosure, the average resistance of all touch lines 4 of the first touch line group 41 is greater than the average resistance of all touch lines 4 of the second touch line group 42. By making the plurality of compensation lines 5 bend and wind in the second fan-out area FA2, and at least one compensation line 5 of each compensation line group 50 is electrically connected to at least one touch line 4 of the corresponding second touch line group 42, the average resistance of all touch lines 4 of the second touch line group 42 can be increased, and the difference between the average resistance of all touch lines 4 of the second touch line group 42 and the average resistance of all touch lines 4 of the first touch line group 41 can be reduced, so that the difference between the voltage drop (IR-Drop) generated by the voltage signal transmitted by all touch lines 4 of the second touch line group 42 and the voltage drop generated by the voltage signal transmitted by all touch lines 4 of the first touch line group 41 is reduced. In the case where each group of touch lines 4 receives the same voltage signal, it is beneficial to improve the uniformity of the voltage signal received by the touch unit 3 electrically connected to each group of touch lines 4.

[0340] Moreover, since the area of ​​the second fan-out area FA2 is larger than that of the first fan-out area FA1, compared with the first fan-out area FA1, the second fan-out area FA2 provides more bending and winding space for multiple compensation lines 5, which is beneficial to increase the winding length of the compensation line 5, and can increase the resistance compensation value of the multiple touch lines 4 of the second touch line group 42.

[0341] In addition, the display panel 100 is bent in the bending area BA, so that the second fan-out area FA2 and the binding area BD are bent to the non-display side of the display panel 100. Therefore, the first fan-out area FA1 is located in the frame area of ​​the display device, and the second fan-out area FA2 and the binding area BD are not located in the frame area of ​​the display device. Compared with bending and winding the multiple compensation lines 5 in the first fan-out area FA1, bending and winding the multiple compensation lines 5 in the second fan-out area FA2 will not increase the width of the frame of the display device, which is conducive to narrowing the frame of the display device.

[0342] In some embodiments, Figure 4 As shown, the multiple touch wirings 4 also include a third touch wiring group 43, which is located in the first fan-out area FA1, the bending area BA and the second fan-out area FA2, and is farther away from the midline L1 extending along the second direction Y of the display panel 100 relative to the second touch wiring group 421 on the second side.

[0343] It is understandable that, combined with Figure 1 and Figure 4The touch lines 4 in the third touch line group 43 extend from the third peripheral area BB3 through the second peripheral area BB2 to the fourth peripheral area BB4. The above-mentioned routing design of the third touch line group 43 can avoid the touch lines 4 in the third touch line group 43 from crossing with the touch lines 4 in at least one of the second touch line groups 421 on the second side.

[0344] In some embodiments, Figure 1 , Figure 2 and Figure 4 As shown, the display panel 100 includes a plurality of pin groups 6, and the plurality of pin groups 6 are arranged in the binding area BD. The plurality of pin groups 6 include: a first pin group 61, a second pin group 62, a third pin group 63, a fourth pin group 64, a fifth pin group 65, a sixth pin group 66 and a seventh pin group 67 arranged in sequence along a first direction X and in a direction U from the first connection portion V11 to the second connection portion V12, and each pin group 6 includes at least one pin 60.

[0345] Each touch trace 4 of the first touch trace group 411 on the first side is electrically connected to at least one pin 60 of the first pin group 61. Each compensation line 5 of the compensation line group 50 corresponding to one of the second touch trace groups 420 on the first side is electrically connected to at least one pin 60 of the second pin group 62, and each compensation line 5 of the compensation line group 50 corresponding to another of the second touch trace groups 420 on the first side is electrically connected to at least one pin 60 of the third pin group 63. The first voltage power line V1 is electrically connected to at least one pin 60 of the fourth pin group 64. Each touch trace 4 of the first touch trace group 411 on the second side is electrically connected to at least one pin 60 of the fifth pin group 65. Each compensation line 5 of the compensation line group 50 corresponding to the second touch trace group 421 on the second side is electrically connected to at least one pin 60 of the sixth pin group 66. Each touch trace 4 of the third touch trace group 43 is electrically connected to at least one pin 60 of the seventh pin group 67.

[0346] The plurality of pin groups 6 are bound to a flexible printed circuit (FPC) to receive a voltage signal from the flexible printed circuit.

[0347] In addition, in the On cell technology, the technology of directly setting the touch function layer T on the encapsulation layer 117 of the display substrate 1 also includes FSLOC (Flexible Single-Layer On Cell) technology. FSLOC technology can be based on the working principle of self-capacitance (or voltage) detection, and generally uses a single layer of metal to form a touch electrode. When a finger touches the display device, the finger will take away the charge on the touch unit. The touch IC detects the change in the self-capacitance value (or voltage value) of the touch electrode to identify the touch position of the finger, thereby realizing the touch function of the display device.

[0348] Some embodiments of the present disclosure also provide a display panel, which adopts the FSLOC technology. The winding method of the fan-out area of ​​the display panel also adopts Figure 1 The winding method provides more bending and winding space for the compensation line, which is conducive to increasing the winding length of the compensation line, increasing the resistance compensation value of the touch line, and improving the uniformity of the voltage signal received by the touch unit electrically connected to the touch line. In addition, it does not increase the width of the frame of the display device, which is conducive to narrowing the frame of the display device.

[0349] Some embodiments of the present disclosure also provide a display device, such as Fig.29 As shown, the display device 300 includes the display panel 100 in any of the above embodiments.

[0350] In the above-mentioned embodiment of the present disclosure, the display panel 100 of the display device 300 can improve the uniformity of the voltage signal received by the touch control unit 3 electrically connected to each group of touch control traces 4 .

[0351] Moreover, since the area of ​​the second fan-out area FA2 is larger than that of the first fan-out area FA1, compared with the first fan-out area FA1, the second fan-out area FA2 provides more bending and winding space for multiple compensation lines 5, which is beneficial to increase the winding length of the compensation line 5, and can increase the resistance compensation value of the multiple touch lines 4 of the second touch line group 42.

[0352] In addition, the width of the frame of the display device will not be increased, which is conducive to narrowing the frame of the display device.

[0353] The display device 300 may be an electroluminescent display device, and the electroluminescent display device may be an organic light-emitting diode (OLED) or a quantum dot light-emitting diode (QLED).

[0354] The display device 300 described above may be any device that displays images, whether in motion (e.g., video) or fixed (e.g., still images), and whether textual or . More specifically, it is contemplated that the embodiments described may be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, camcorders, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controls and / or displays, displays of camera views (e.g., displays of rear-view cameras in vehicles), electronic photographs, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays of images of a piece of jewelry), etc.

[0355] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions that can be thought of by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: It includes a display area, and a bending area and a binding area located on one side of the display area and away from the display area in sequence, The display panel comprises: Display substrate; The touch function layer is disposed on the display substrate and includes: A plurality of touch control units are arranged in the display area; A plurality of touch lines, each touch unit being electrically connected to at least one touch line; the plurality of touch lines pass through the bending area and extend to a side of the bending area away from the display area; the plurality of touch lines include at least one first touch line and at least one second touch line; A plurality of compensation lines, at least some of the compensation lines are arranged on a side of the bending area away from the display area; the second touch line is electrically connected to at least one compensation line, the compensation line is in the shape of a fold line, including a plurality of fold line segments, at least one of the fold line segments extends along a first direction or a second direction; the first direction intersects with the second direction.

2. The display panel according to claim 1, characterized in that: It also includes a first fan-out area between the display area and the bending area, and a second fan-out area between the bending area and the binding area; Wherein, the compensation line arranged on the side of the bending area away from the display area is bent multiple times in the second fan-out area and converges to the binding area.

3. The display panel according to claim 1, characterized in that: The plurality of touch routing lines include at least one first touch routing line group and at least one second touch routing line group; The multiple compensation lines include at least one compensation line group corresponding to the at least one second touch line group, at least one compensation line of each compensation line group is electrically connected to at least one touch line of the corresponding second touch line group, and the electrically connected touch lines and compensation lines form a compensation touch line.

4. The display panel according to claim 3, characterized in that: The average resistance of all the compensation touch lines in the corresponding second touch line group and compensation line group is substantially equal to the average resistance or average length of all the touch lines in at least one first touch line group.

5. The display panel according to claim 3, characterized in that: The resistance of the compensation touch line is substantially equal to the resistance of at least one touch line of at least one first touch line group.

6. The display panel according to claim 3, characterized in that: The resistance of each compensation touch line in the corresponding second touch line group and compensation line group is substantially equal.

7. The display panel according to claim 3, characterized in that: An average length of all touch lines of the second touch line group is smaller than an average length of all touch lines of at least one first touch line group.

8. The display panel according to claim 1, characterized in that: It also includes a first fan-out area between the display area and the bending area, and a second fan-out area between the bending area and the binding area; The display substrate comprises: substrate; A first power supply voltage line is arranged on the substrate; the first power supply voltage line extends from the first fan-out area through the bending area and the second fan-out area to the binding area; The plurality of touch lines include touch connection segments located in the first fan-out area and the second fan-out area, and the orthographic projection of the touch connection segments on the substrate at least partially overlaps with the orthographic projection of the first power supply voltage line on the substrate; The orthographic projections of the plurality of compensation lines on the substrate at least partially overlap with the orthographic projections of the first power supply voltage line on the substrate.

9. The display panel according to claim 8, characterized in that: The width of the first power voltage line is greater than the width of the touch control line.

10. The display panel according to claim 8, characterized in that: The orthographic projection of at least one compensation line on the substrate is located within the orthographic projection range of the first power supply voltage line on the substrate; and / or, The display substrate also includes a second power supply voltage line, which extends from the first fan-out area through the bending area and the second fan-out area to the binding area; the orthographic projection of at least one compensation line on the substrate partially overlaps with the orthographic projection of the first power supply voltage line on the substrate, and partially overlaps with the orthographic projection of the second power supply voltage line on the substrate.

11. The display panel according to claim 10, characterized in that: The first power supply voltage line is used to transmit a first power supply voltage signal, wherein the first power supply voltage signal includes a VSS signal; The second power supply voltage line is used to transmit a second power supply voltage signal, and the second power supply voltage signal includes a VDD signal.

12. The display panel according to claim 8, characterized in that: The first power supply voltage line includes a first connection portion located in the first fan-out area, the bending area, and the second fan-out area, and the first connection portion is located on a first side of a midline of the display panel extending along the second direction; The plurality of touch lines to which the touch connection segment located within the orthographic projection range of the first connection portion belongs include at least one first-side first touch line group and N first-side second touch line groups, where N≥2; The average resistance of all touch wirings in each second touch wiring group of the first side from the first to the Nth first side is decreased in sequence; Among the N compensation line groups corresponding to the N first-side second touch wiring groups, the average resistance of all compensation lines in each compensation line group from the first to the Nth compensation line groups increases in sequence; The i-th first-side second touch wiring group is electrically connected to the i-th compensation line group, where i=1-N.

13. The display panel according to claim 12, characterized in that: The at least one first-side first touch wiring group and the N first-side second touch wiring groups are sequentially arranged along a first direction, and the N first-side second touch wiring groups are closer to a midline of the display panel extending along a second direction than the at least one first-side first touch wiring group; the first direction is substantially parallel to a boundary line between the first fan-out area and the display area, and the second direction is substantially perpendicular to the first direction; The N compensation line groups are all located on a side of the at least one first-side first touch wiring group close to a midline of the display panel extending along the second direction.

14. The display panel according to claim 13, characterized in that: The second power supply voltage line in the display substrate is located at a side of the first connection portion close to a midline of the display panel extending along the second direction; The N compensation line groups include at least one first target compensation line group and at least one second target compensation line group; the orthographic projection of the first target compensation line group on the substrate is located within the orthographic projection range of the first connecting portion on the substrate; the orthographic projection of the second target compensation line group on the substrate partially overlaps with the orthographic projection of the first connecting portion on the substrate, and partially overlaps with the orthographic projection of the second power supply voltage line on the substrate.

15. The display panel according to claim 14, characterized in that: The first-side second touch wiring group corresponding to the second target compensation wiring group is located on a side of the first-side second touch wiring group corresponding to the first target compensation wiring group close to a midline of the display panel extending along the second direction.

16. The display panel according to claim 12, characterized in that: The plurality of touch control units include a plurality of first touch control units and a plurality of second touch control units; each of the first touch control units extends along the first direction, and the plurality of first touch control units are arranged in parallel along the second direction; each of the second touch control units extends along the second direction, and the plurality of second touch control units are arranged in parallel along the first direction; The multiple first touch units are divided into multiple groups, each group includes one or multiple first touch units adjacent to each other in the second direction, the multiple groups of first touch units correspond to the at least one first-side first touch wiring group and the N first-side second touch wiring groups one by one, and at least one touch wiring of each first-side first touch wiring group and each first-side second touch wiring group is electrically connected to at least one first touch unit of the corresponding first touch unit group; Along the second direction, at least one first touch unit group corresponding to the at least one first-side first touch wiring group and N first touch unit groups corresponding to the 1st to Nth first-side second touch wiring groups are sequentially close to the first fan-out area.

17. The display panel according to claim 16, characterized in that: The display panel includes a first peripheral area and a second peripheral area located on opposite sides of the display area in a first direction, and multiple touch lines of the at least one first-side first touch line group and the N first-side second touch line groups all extend along the first peripheral area to the first fan-out area.

18. The display panel according to claim 8, characterized in that: The first power supply voltage line includes a second connection portion located in the first fan-out area, the bending area, and the second fan-out area, and the second connection portion is located on a second side of a midline of the display panel extending along a second direction; The plurality of touch lines belonging to the touch connection segment located within the orthographic projection range of the second connection portion include at least one second-side first touch line group and at least one second-side second touch line group sequentially arranged along the first direction, and the at least one second-side first touch line group is closer to the midline of the display panel extending along the second direction than the at least one second-side second touch line group; The orthographic projection of at least one compensation line group corresponding to the at least one second touch wiring group on the second side on the substrate is located within the orthographic projection range of the second connecting portion on the substrate.

19. The display panel according to claim 1, characterized in that: The touch function layer includes an electrode layer, a first insulating layer and a bridge layer stacked on the display substrate, the first insulating layer is located between the electrode layer and the bridge layer, and the bridge layer is located on a side of the electrode layer close to or away from the display substrate; The plurality of touch control units include a plurality of first touch control units and a plurality of second touch control units that are insulated from each other; Each first touch control unit extends along the first direction, and includes a plurality of first touch control electrodes and a plurality of first connection bridges, and two adjacent first touch control electrodes are electrically connected via the first connection bridges; the plurality of first touch control units are arranged in parallel along the second direction; Each second touch control unit extends along the second direction, and includes a plurality of second touch control electrodes and a plurality of second connection bridges, and two adjacent second touch control electrodes are electrically connected via the second connection bridges; the plurality of second touch control units are arranged in parallel along the first direction, and are insulated from the plurality of first touch control units; Wherein, the first touch electrode, the first connecting bridge and the second touch electrode are arranged on the electrode layer, and the second connecting bridge is arranged on the bridging layer; or, The first touch electrode, the second touch electrode and the second connecting bridge are arranged on the electrode layer, and the first connecting bridge is arranged on the bridging layer.

20. The display panel according to claim 19, characterized in that: The display panel further includes a second fan-out region located between the bending region and the binding region; The portion of the touch line located in the second fan-out area includes a first touch sub-line arranged on the electrode layer and a second touch sub-line arranged on the bridge layer, and the first touch sub-line and the second touch sub-line are electrically connected through at least one via hole in a first insulating layer arranged between the electrode layer and the bridge layer; The compensation line is disposed on the electrode layer and is directly electrically connected to the first touch sub-line of the touch line of the second touch line group; or, The compensation line is disposed on the bridge layer and is directly electrically connected to the second touch sub-line of the touch line of the second touch line group; or, The compensation line includes a first compensation sub-line arranged in the electrode layer and a second compensation sub-line arranged in the bridge layer, the first compensation sub-line is directly electrically connected to the first touch sub-line of the touch line of the second touch line group, and the second compensation sub-line is directly electrically connected to the second touch sub-line of the touch line of the second touch line group.

21. The display panel according to claim 20, characterized in that: In the case that the compensation line includes a first compensation sub-line and a second compensation sub-line, the first compensation sub-line is electrically connected to the second compensation sub-line through at least one via hole in an insulating layer disposed between the electrode layer and the bridge layer.

22. The display panel according to claim 3, characterized in that: The resistance of at least one touch line of the first touch line group is R max ; The resistance of at least one touch line of the second touch line group is R min ; The line width of the compensation line electrically connected to at least one touch line of the second touch line group is W, the length of the compensation line is L, and the square resistance of the compensation line is X; in, 23. The display panel according to claim 22, characterized in that: In the case where the compensation line includes a first compensation sub-line and a second compensation sub-line that are electrically connected, The square resistance of the first compensation sub-line is a, the square resistance of the second compensation sub-line of the compensation line is b, and the square resistance of the compensation line is in, 24. The display panel according to claim 1, characterized in that: The compensation line includes a main line segment and a connecting line segment; one end of the main line segment is electrically connected to the corresponding touch line, and the other end of the main line segment is electrically connected to the connecting line segment after being bent at least once; the connecting line segment extends away from one end of the main line segment to the binding area; The width of the main line segment is smaller than the width of the touch line, and / or smaller than the width of the connecting line segment.

25. The display panel according to any one of claims 1 to 24, characterized in that: It also includes a first fan-out area between the display area and the bending area, and a second fan-out area between the bending area and the binding area; The display substrate comprises a first conductive layer; The touch wiring includes a touch connection segment arranged on the touch function layer, and a transfer segment arranged on the first conductive layer; the touch connection segment includes a first sub-touch connection segment arranged on the first fan-out area, and a second sub-touch connection segment arranged on the second fan-out area; the transfer segment is arranged on the bending area; One end of the transition segment is electrically connected to the first sub-touch connection segment through a via hole in the insulating layer between the first conductive layer and the touch function layer; the other end of the transition segment is electrically connected to the second sub-touch connection segment through a via hole in the insulating layer between the first conductive layer and the touch function layer.

26. The display panel according to claim 25, characterized in that: The display substrate comprises an active layer, a first gate insulating layer, a first gate conductive layer, a second gate insulating layer, a second gate conductive layer, an interlayer dielectric layer and a source-drain conductive layer which are stacked in sequence; The first conductive layer is the source-drain conductive layer.

27. The display panel according to claim 26, characterized in that: The first conductive layer includes a first power supply voltage line and / or a second power supply voltage line.

28. The display panel according to any one of claims 1 to 24, characterized in that: The display substrate further includes an encapsulation layer; The touch function layer is stacked on one side of the encapsulation layer and is in contact with the encapsulation layer.

29. A display panel, characterized in that: It includes a display area, and a first fan-out area, a bending area, a second fan-out area and a binding area which are located on one side of the display area and are sequentially away from the display area; The area of ​​the second fan-out area is greater than the area of ​​the first fan-out area; The display panel comprises: Display substrate, comprising: A first power supply voltage line includes a first connection portion and a second connection portion located in the first fan-out area, the bending area, and the second fan-out area, wherein the first connection portion and the second connection portion are respectively located at opposite sides of a midline of the display panel extending along a second direction; the second direction is substantially perpendicular to a boundary line between the first fan-out area and the display area; The touch function layer is disposed on the display substrate and includes: A plurality of touch control units are arranged in the display area; A plurality of touch lines, each touch unit being electrically connected to at least one touch line; the plurality of touch lines sequentially extending through the first fan-out area and the bending area to the second fan-out area; The plurality of touch lines include a plurality of first touch line groups and a plurality of second touch line groups, the length of at least one touch line of the first touch line group is greater than the length of at least one touch line of the second touch line group; all touch lines of the first touch line group are gathered in the binding area; A plurality of compensation lines are bent at least once in the second fan-out area and gathered in the binding area; the plurality of compensation lines include compensation line groups corresponding to the second touch line groups one by one, and at least one compensation line of each compensation line group is electrically connected to at least one touch line of the corresponding second touch line group; The orthographic projections of the first touch wiring group and the second touch wiring group on the display substrate overlap with the first connecting portion and the second connecting portion of the first power supply voltage line.

30. The display panel according to claim 29, characterized in that: The plurality of first touch wiring groups and the plurality of second touch wiring groups include: Along a first direction and in a direction from the first connection portion to the second connection portion, a first-side first touch wiring group, two first-side second touch wiring groups, a second-side first touch wiring group, and a second-side second touch wiring group are sequentially arranged; the first direction is perpendicular to the second direction; The orthographic projections of the first touch wiring group on the first side and the second touch wiring group on the first side on the display substrate overlap with the first connecting portion of the first power supply voltage line, respectively; the orthographic projections of the first touch wiring group on the second side and the second touch wiring group on the display substrate overlap with the second connecting portion of the first power supply voltage line, respectively.

31. A display device, characterized in that: The invention comprises the display panel according to any one of claims 1 to 30.

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