Display panel and display device

Abstract

A display panel and a display device, wherein the display panel comprises a substrate, a power signal line arranged on the substrate, and an auxiliary electrode arranged on a side of the power signal line away from the substrate, wherein the orthographic projection of the substrate at the point where the auxiliary electrode has a maximum voltage drop does not overlap with the orthographic projection of the substrate at the point where the power signal line has a maximum voltage drop.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to, but are not limited to, the field of display technology, and specifically relate to a display panel and a display device. Background Art

[0002] Organic Light-Emitting Diode (OLED) has become a highly competitive and promising next-generation display technology due to its all-solid-state structure, high brightness, full viewing angle, fast response speed, and flexible display lamp.

[0003] In the field of large-size organic light-emitting displays, white light is usually displayed in combination with color film, and the top emission mode is adopted to have a larger aperture ratio and lower power consumption. However, for large-size top-emitting display devices, the transparent cathode layer on the light-emitting side is usually a layered film layer covering the entire display area, and a high transmittance is required. Therefore, the transparent cathode designed on the light-emitting side is generally thinner, and the extremely thin transparent electrode with a large coverage area is prone to a large voltage difference between the center and the edge, which greatly affects the performance and life of the display device.

[0004] At present, the related large-size organic light-emitting display panel reduces the cathode resistance by increasing the cathode thickness. This design will cause the cathode transmittance loss, which will lead to an increase in the display panel current and reduce the product life. Summary of the invention

[0005] The following is a summary of the subject matter of the detailed description of the present disclosure. This summary is not intended to limit the scope of the claims.

[0006] In a first aspect, an embodiment of the present disclosure provides a display panel, comprising a substrate, a power signal line arranged on the substrate, and an auxiliary electrode arranged on a side of the power signal line away from the substrate, wherein a maximum voltage drop of the auxiliary electrode does not overlap with a maximum voltage drop of the power signal line at a projection of the substrate.

[0007] In an exemplary embodiment, it includes a display area, a binding area located on one side of the display area, and a routing area located on a side of the display area away from the binding area, the power signal line includes a first sub-signal line, the first sub-signal line is located in the routing area, at least part of the auxiliary electrode is located in the routing area, and the distance from the edge of the first sub-signal line close to the binding area to the edge of the binding area close to the first sub-signal line is greater than or equal to the distance from the edge of the auxiliary electrode away from the binding area to the edge of the binding area close to the auxiliary electrode.

[0008] In an exemplary embodiment, the power signal line also includes at least two second sub-signal lines, the first sub-signal line extends along a first direction of the substrate, the at least two second sub-signal lines extend along a second direction of the substrate, the at least two second sub-signal lines are connected to the first sub-signal line, and the at least two second sub-signal lines are arranged at intervals on the first sub-signal line along the first direction of the substrate, at least part of the auxiliary electrode's orthographic projection on the substrate overlaps with the orthographic projection of at least one second sub-signal line on the substrate, and the first direction is different from the second direction.

[0009] In an exemplary embodiment, a line width of the first sub-signal line in the second direction is greater than a line width of the second sub-signal line in the first direction.

[0010] In an exemplary embodiment, a repair groove is provided in the auxiliary electrode, and an orthographic projection of at least a portion of the repair groove on the substrate overlaps with an orthographic projection of at least one second signal sub-line on the substrate.

[0011] In an exemplary embodiment, a length of an orthographic projection of the repair groove on the substrate in the first direction is greater than a line width of the second signal sub-line in the first direction.

[0012] In an exemplary embodiment, the auxiliary electrode includes a first electrode extending along a first direction of the substrate and at least two second electrodes extending along a second direction of the substrate, the at least two second electrodes are connected to the first electrode, the at least two second electrodes are arranged at intervals on the first electrode along the first direction of the substrate, and the orthographic projection of each second electrode on the substrate does not overlap with the orthographic projection of each second sub-signal line on the substrate.

[0013] In an exemplary embodiment, the at least two second electrodes and the at least two second signal sub lines are alternately arranged along the first direction of the substrate.

[0014] In an exemplary embodiment, a line width of the first electrode in the second direction is greater than a line width of the second electrode in the first direction.

[0015] In an exemplary embodiment, a distance between an edge of the first sub-signal line close to the binding area and an edge of the first electrode away from the binding area is greater than a line width of the second sub-signal line in the first direction and / or a line width of the second electrode in the first direction, and a distance between an edge of the first sub-signal line close to the binding area and an edge of the first electrode away from the binding area is less than a distance between an edge of the second sub-signal line close to the second electrode and an edge of the second electrode close to the second sub-signal line.

[0016] In an exemplary embodiment, a cathode is further included and arranged on a side of the auxiliary electrode away from the substrate, at least a portion of the cathode overlaps with the auxiliary electrode's orthographic projection on the substrate, and at least a portion of the cathode is in surface contact with the auxiliary electrode.

[0017] In an exemplary embodiment, it includes a display area and a wiring area located on at least one side of the display area, the auxiliary electrode and the cathode are both located in the display area and the wiring area, the display panel also includes a structural film layer arranged between the auxiliary electrode and the cathode, a groove is provided in the structural film layer, the groove is located in the wiring area, and at least part of the cathode is in contact with the auxiliary electrode through the groove surface.

[0018] In an exemplary embodiment, a lap hole is provided in the structural film layer, the lap hole is located in the display area, and at least a portion of the cathode is connected to the auxiliary electrode through the lap hole.

[0019] In a second aspect, an embodiment of the present disclosure further provides a display device, comprising the aforementioned display panel.

[0020] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0022] Figure 1 This is a schematic diagram of the structure of the display panel according to an embodiment of the present application;

[0023] Figure 2 This is a partial enlarged view of the display panel of the embodiment of the present application;

[0024] Figure 3 A cross-sectional view of a display panel according to an embodiment of the present application;

[0025] Figure 4 Schematic diagram of the display panel of the embodiment of the present application and the display panel of the related art showing the maximum voltage drop at the display panel position. DETAILED DESCRIPTION

[0026] The embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. Note that the embodiments can be implemented in a plurality of different forms. A person of ordinary skill in the art can easily understand the fact that the methods and contents can be transformed into various forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be interpreted as being limited to the contents described in the following embodiments. In the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0027] In this specification, for the sake of convenience, the words and phrases indicating the orientation or positional relationship, such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing this specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, it is not limited to the words and phrases described in the specification, and can be appropriately replaced according to the situation.

[0028] In this specification, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the meanings of the above terms in this disclosure can be understood according to the circumstances.

[0029] The term "about" in the present disclosure refers to a numerical value that is not strictly limited to allow for process and measurement errors.

[0030] The display panel of an embodiment of the present application provides a display panel, including a substrate, a power signal line arranged on the substrate, and an auxiliary electrode arranged on a side of the power signal line away from the substrate, wherein the maximum voltage drop of the auxiliary electrode is at a point where the orthographic projection of the substrate does not overlap with the maximum voltage drop of the power signal line.

[0031] Figure 1 Schematic diagram of the structure of the display panel of the present application embodiment. Figure 1As shown, the display panel of the embodiment of the present application includes a display area 100, a binding area 200 located on one side of the display area 100, and a routing area 300 located on the side of the display area 100 away from the binding area 200. The binding area 200 includes a driving circuit 210, which can be used as a data input terminal of the display area 100 to provide various signals, such as power signals, to the display area 100. The display area 100 includes a pixel unit, which is used to display an image. The routing area 300 includes various routings, such as power signal lines, etc. The routing in the routing area 300 is used to transmit the signal provided by the driving circuit 210 to the pixel unit of the display area 100 to drive the pixel unit to display an image. In some embodiments, the routing area may also be located on other sides of the display area, and the embodiments of the present application will not be repeated here.

[0032] Figure 2 This is a partial enlarged view of the display panel of the embodiment of the present application; Figure 3 This is a cross-sectional view of a display panel according to an embodiment of the present application. Figure 3 for Figure 2 The cross-sectional view along the AA direction. Figure 1 , Figure 2 and Figure 3 As shown, in a direction perpendicular to the plane where the substrate is located, the display panel of the embodiment of the present application includes a substrate 1, a power signal line 7 arranged on the substrate 1, and an auxiliary electrode 2 arranged on the side of the power signal line 7 away from the substrate 1, and the maximum voltage drop of the auxiliary electrode 2 is at a point where the orthographic projection of the substrate 1 does not overlap with the maximum voltage drop of the power signal line 7 at the point where the orthographic projection of the substrate 1 is.

[0033] The display panel of the embodiment of the present application improves the problem of large voltage difference between the center and the edge of the large-size display panel by making the maximum voltage drop of the auxiliary electrode 2 and the maximum voltage drop of the power signal line 7 not overlap, thereby ensuring uniform display of the display panel.

[0034] In an exemplary embodiment, Figure 1 and Figure 2As shown, in a direction parallel to the plane where the substrate is located, the power signal line 7 includes a first sub-signal line 701, and the first sub-signal line 701 is located in the wiring area 300 on the side of the display area 100 away from the binding area 200. At least part of the auxiliary electrode 2 is located in the display area 100 and the wiring area 300 on the side of the display area 100 away from the binding area 200, that is, part of the auxiliary electrode 2 is located in the display area 100, and part of the auxiliary electrode 2 is located in the wiring area 300 on the side of the display area 100 away from the binding area 200. The distance from the edge of the first sub-signal line 701 close to the binding area 200 to the edge of the binding area 200 close to the first sub-signal line 701 is greater than or equal to the distance from the edge of the auxiliary electrode 2 away from the binding area 200 to the edge of the binding area 200 close to the auxiliary electrode 2, that is, the first sub-signal line 701 is located on the side of the auxiliary electrode 2 away from the binding area 200, and the orthographic projection of the first sub-signal line 701 on the substrate 1 does not overlap with the orthographic projection of the auxiliary electrode 2 on the substrate 1.

[0035] The display panel of the embodiment of the present application makes the first sub-signal line 701 located on the side of the auxiliary electrode 2 away from the binding area 200, so that the distance of the power signal provided by the binding area 200 to the first sub-signal line 701 is greater than the distance to the auxiliary electrode 2, so that the maximum voltage drop of the auxiliary electrode 2 does not overlap with the maximum voltage drop of the power signal line 7, thereby improving the problem of large voltage difference between the center and the edge of the large-size display panel. In addition, the display panel of the embodiment of the present application makes the first sub-signal line 701 and the auxiliary electrode 2 not overlap, so as to avoid the formation of capacitance between the first sub-signal line 701 and the auxiliary electrode 2, which affects the display uniformity.

[0036] In an exemplary embodiment, Figure 1 and Figure 2 As shown, in a direction parallel to the plane where the substrate is located, the power signal line 7 also includes at least two second sub-signal lines 702, the first sub-signal line 701 extends along the first direction D1 of the substrate 1, and each second sub-signal line 702 extends along the second direction D2 of the substrate 1, one end of each second sub-signal line 702 is connected to the first sub-signal line 701, and the other end of each second sub-signal line 702 extends along the second direction D2 of the substrate 1 to the display area 100, for providing power signals to the pixel units of the display area 100. Each second sub-signal line 702 is arranged at intervals along the first direction D1 on the first sub-signal line 701. Among them, the power signal line 7 can be a VDD signal line. The first direction is different from the second direction, and for example, the first direction is perpendicular to the second direction.

[0037] In an exemplary embodiment, the line width of the first sub-signal line 701 in the second direction D2 is greater than the line width of the second sub-signal line 702 in the first direction D1, that is, the line width of the first sub-signal line 701 in the second direction D2 as an orthographic projection of the substrate 1 is greater than the line width of the second sub-signal line 702 in the first direction D1 as an orthographic projection of the substrate 1, so that the first sub-signal line 701 can stably transmit the power signal to the second sub-signal line 702.

[0038] In an exemplary embodiment, Figure 1 and Figure 2 As shown, in a direction perpendicular to the plane where the substrate is located, the first sub-signal line 701 and each second sub-signal line 702 are located on the side of the auxiliary electrode 2 close to the substrate 1. The orthographic projection of at least part of the auxiliary electrode 2 on the substrate 1 overlaps with the orthographic projection of at least one second sub-signal line 702 on the substrate 1, that is, at least one second sub-signal line 702 extends to the display area 100 and needs to pass through the side of the auxiliary electrode 2 close to the substrate 1.

[0039] In an exemplary embodiment, Figure 1 , Figure 2 and Figure 3 As shown, a repair groove 201 is provided in the auxiliary electrode 2, and at least a portion of the repair groove 201 overlaps with the orthographic projection of at least one second sub-signal line 702 on the substrate 1. The repair groove 201 is used to repair the auxiliary electrode 2 at the crossover part of the second sub-signal line 702 to avoid the formation of capacitance between the second sub-signal line 702 and the auxiliary electrode 2, which affects the display uniformity.

[0040] In an exemplary embodiment, the length of the orthographic projection of the repair groove 201 on the substrate 1 in the first direction D1 is greater than the line width of the second sub-signal line 702 in the first direction D1, ensuring that the overlapping area of ​​the orthographic projection of the second sub-signal line 702 on the substrate 1 and the orthographic projection of the auxiliary electrode 2 on the substrate 1 both overlap with the orthographic projection of the repair groove 201 on the substrate 1, thereby avoiding the overlap of the second sub-signal line 702 and the auxiliary electrode 2 to form a capacitor.

[0041] In an exemplary embodiment, Figure 1 and Figure 2As shown, the auxiliary electrode 2 includes a first electrode 21 extending along the first direction D1 of the substrate 1 and at least two second electrodes 22 extending along the second direction D2 of the substrate 1, and the first electrode 21 and the second electrode 22 are both strip electrodes. The first electrode 21 is located in the routing area 300, and at least part of the second electrode 22 is located in the display area 100. One end of each second electrode 22 is connected to the first electrode 21, and at least two second electrodes 22 are arranged at intervals along the first direction D1 of the substrate 1 on the first electrode 21. The orthographic projection of each second electrode 22 on the substrate 1 does not overlap with the orthographic projection of each second sub-signal line 702 on the substrate 1, so as to avoid the formation of capacitance between the second electrode 22 and the second sub-signal line 702, thereby affecting the display effect. Among them, each second electrode 22 and the first electrode 21 are integrally formed with the same material, that is, each second electrode 22 and the first electrode 21 are made of the same material and prepared by the same preparation process, thereby simplifying the process and reducing costs.

[0042] In an exemplary embodiment, a line width of the first electrode 21 in the second direction D2 is greater than a line width of the second electrode 22 in the first direction D1.

[0043] In an exemplary embodiment, the distance between the edge of the first sub-signal line 701 close to the binding region 200 and the edge of the first electrode 21 away from the binding region 200 is greater than the line width of the second sub-signal line 702 in the first direction D1 and / or the line width of the second electrode 22 in the first direction D1, and the distance between the edge of the first sub-signal line 701 close to the binding region 200 and the edge of the first electrode 21 away from the binding region 200 is less than the distance between the edge of the second sub-signal line 702 close to the second electrode 22 and the edge of the second electrode 22 close to the second sub-signal line 702.

[0044] In an exemplary embodiment, Figure 1 and Figure 2 As shown, at least two second electrodes 22 and at least two second sub-signal lines 702 are alternately arranged along the first direction D1 of the substrate 1, thereby ensuring the stability of the power supply signal provided to the pixel unit without affecting the display effect.

[0045] In an exemplary embodiment, Figure 1 , Figure 2 and Figure 3As shown, in a direction perpendicular to the plane where the substrate is located, the display panel further includes a cathode 4 disposed on the side of the auxiliary electrode 2 away from the substrate 1, and at least part of the cathode 4 is located in the display area 100 and the routing area 300. The first sub-signal line 701 is located on the side of the cathode 4 away from the binding area 200, that is, the first sub-signal line 701 is closer to the edge of the substrate relative to the edge of the cathode 4. And the positive projection of the cathode 4 on the substrate 1 does not overlap with the positive projection of the first sub-signal line 701 on the substrate 1, so as to avoid the formation of a capacitor between the cathode 4 and the first sub-signal line 701.

[0046] The display panel of the embodiment of the present application sets the first sub-signal line 701 on the side of the cathode 4 away from the binding area 200. During the preparation of the display panel, it is easy to control the formation position of the first sub-signal line 701 and the cathode 4 to avoid overlapping of the first sub-signal line 701 and the cathode 4.

[0047] In an exemplary embodiment, Figure 3 As shown, in the direction perpendicular to the plane where the substrate is located, at least part of the positive projection of the cathode 4 on the substrate 1 overlaps with the positive projection of the auxiliary electrode 2 on the substrate 1, and at least part of the cathode 4 is in surface contact with the auxiliary electrode 2, which effectively reduces the voltage drop of the current flowing through the cathode 4, improves the problem of large voltage difference between the cathode in the center and the edge of the large-size display panel, and thus ensures the display uniformity of the display panel. Among them, at least part of the cathode 4 is in surface contact with the auxiliary electrode 2, which means that at least part of the surface of the cathode 4 close to the auxiliary electrode 2 is in contact with the surface of the auxiliary electrode 2 close to the cathode 4, that is, no other film structure is set between the surface of at least part of the cathode 4 close to the auxiliary electrode 2 and the surface of the auxiliary electrode 2 close to the cathode 4.

[0048] In an exemplary embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the display panel further includes a structural film layer 3 disposed between the auxiliary electrode 2 and the cathode 4, and a groove 6 is disposed in the structural film layer 3, and at least a portion of the groove 6 is located in the wiring area 300. At least a portion of the cathode 4 is in surface contact with the auxiliary electrode 2 through the groove 6, that is, the groove 6 exposes the auxiliary electrode 2, and the cathode 4 is in surface contact with the auxiliary electrode 2 at the groove 6.

[0049] In an exemplary embodiment, the structural film layer 3 may include multiple film layers. For example, Figure 3 As shown, in the wiring area 300 , the structural film layer 3 includes an organic insulating layer 301 disposed on the auxiliary electrode 2 at a side away from the substrate 1 and a first pixel defining layer 302 disposed on a side of the organic insulating layer 301 away from the substrate 1 .

[0050] In an exemplary embodiment, Figure 1As shown, the structural film layer 3 is provided with a lap hole 140, and the lap hole 140 is located in the display area 100. At least part of the cathode 4 is connected to the auxiliary electrode 2 through the lap hole 140. The cathode 4 in the display panel of the present application is connected to the auxiliary electrode 2 through the lap hole 140, which effectively reduces the voltage drop of the current flowing through the cathode 4, improves the problem of large voltage difference between the center and the edge of the cathode of the large-size display panel, and thus ensures the display uniformity of the display panel.

[0051] In an exemplary embodiment, Figure 1 and Figure 2 As shown, at least two overlapping holes 140 are arranged at intervals along the second direction D2 of the substrate 1 to form overlapping hole columns, at least two overlapping hole columns are arranged at intervals along the first direction D1 of the substrate 1, and at least two overlapping hole columns correspond one-to-one to at least two second electrodes 22, that is, the orthographic projection of one overlapping hole column on the substrate 1 overlaps with the orthographic projection of one second electrode 22 on the substrate 1, so that each second electrode 22 can be connected to the cathode 4 through the overlapping hole column.

[0052] In an exemplary embodiment, the display panel of the present application is a top emission display panel. The cathode 4 may be a transparent electrode, thereby increasing the light transmittance of the display panel.

[0053] In an exemplary embodiment, the pixel unit 110 in the display area includes an effective display area, and the orthographic projection of the effective display area on the substrate 1 does not overlap with the orthographic projection of the second electrode 22 on the substrate 1. The effective display area is an opening area of ​​each pixel unit, so as to avoid the second electrode 22 occupying the space of the effective display area and reduce the aperture ratio of the pixel unit.

[0054] A voltage drop simulation comparison experiment was conducted on the display panel of the embodiment of the present application and the display panel of the related art, wherein the cathode and the auxiliary electrode in the display panel of the related art are connected through a lap hole. The power signal line is a VDD signal line, and the simulation comparison experiment results are shown in Table 1.

[0055] Table 1 Comparative experiment on voltage drop between the display panel of the present embodiment and the display panel of the related art

[0056]

[0057] According to the simulation comparison experimental results, the total current of each pixel unit column is 4.79mA. When the auxiliary electrode has different contact impedances in the overlap hole, the display panel of the embodiment of the present application reduces the maximum voltage drop of the VDD signal line to 1.876V when the overlap hole resistance is 200KΩ, while the maximum voltage drop of the power signal line of the display panel of the related art is 2.338V. The maximum voltage drop of the VSS signal line of the display panel of the embodiment of the present application is near the middle of the display panel, and the corresponding voltage drop of the VDD signal line is not at the maximum at this time, which further reduces the display impact caused by the voltage drop.

[0058] Figure 4 Schematic diagram of the maximum voltage drop of the display panel of the present application embodiment and the display panel of the related art at the display panel position. Figure 4 As shown, the maximum voltage drop of the auxiliary electrode of the display panel of the embodiment of the present application is near the middle of the display panel, and the maximum voltage drop of the corresponding VDD signal line (power signal line) is not the maximum point, that is, the maximum voltage drop of the auxiliary electrode is located at the position of the display panel and the maximum voltage drop of the power signal line is not overlapped at the position of the display panel. In addition, the maximum voltage drop value of the display panel of the embodiment of the present application is effectively reduced compared with the display panel of the related art, and the voltage drop value of the VDD signal line and the VSS signal line are effectively reduced, thereby reducing (eliminating) the uneven display effect caused by the voltage drop of the display panel.

[0059] The embodiment of the present application provides a display device, including the aforementioned display panel. The display device includes a mobile phone, a tablet computer, a smart wearable product (such as a smart watch, a bracelet, etc.), a personal digital assistant (PDA), a car computer, etc. The embodiment of the present application does not impose any special restrictions on the specific form of the above-mentioned foldable display device.

[0060] The drawings in this disclosure only relate to the structures involved in this disclosure, and other structures can refer to the general design. In the absence of conflict, the embodiments of this disclosure, that is, the features in the embodiments, can be combined with each other to obtain new embodiments.

[0061] Those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all should be included in the scope of the claims of the present disclosure.

Claims

1. A display panel, characterized in that: It includes a substrate, a power signal line arranged on the substrate, and an auxiliary electrode arranged on a side of the power signal line away from the substrate, wherein the maximum voltage drop of the auxiliary electrode does not overlap with the maximum voltage drop of the power signal line at the orthographic projection of the substrate; the display panel includes a display area, a binding area located on one side of the display area, and a routing area located on a side of the display area away from the binding area, the power signal line includes a first sub-signal line, the first sub-signal line is located in the routing area, at least part of the auxiliary electrode is located in the routing area, and the distance from the edge of the first sub-signal line close to the binding area to the edge of the binding area close to the first sub-signal line is greater than or equal to the distance from the edge of the auxiliary electrode away from the binding area to the edge of the binding area close to the auxiliary electrode.

2. The display panel according to claim 1, characterized in that: The power signal line also includes at least two second sub-signal lines, the first sub-signal line extends along the first direction of the substrate, the at least two second sub-signal lines extend along the second direction of the substrate, the at least two second sub-signal lines are connected to the first sub-signal line, and the at least two second sub-signal lines are arranged at intervals on the first sub-signal line along the first direction of the substrate, at least part of the auxiliary electrode's orthographic projection on the substrate overlaps with at least one second sub-signal line's orthographic projection on the substrate, and the first direction is different from the second direction.

3. The display panel according to claim 2, characterized in that: A line width of the first sub-signal line in the second direction is greater than a line width of the second sub-signal line in the first direction.

4. The display panel according to claim 2, characterized in that: A repair groove is provided in the auxiliary electrode, and at least a portion of the repair groove overlaps with an orthographic projection of at least one second sub-signal line on the substrate on the substrate.

5. The display panel according to claim 4, characterized in that: A length of an orthographic projection of the repair groove on the substrate in the first direction is greater than a line width of the second sub-signal line in the first direction.

6. The display panel according to claim 2, characterized in that: The auxiliary electrode includes a first electrode extending along a first direction of the substrate and at least two second electrodes extending along a second direction of the substrate, the at least two second electrodes are connected to the first electrode, and the at least two second electrodes are arranged at intervals on the first electrode along the first direction of the substrate, and the orthographic projection of each second electrode on the substrate does not overlap with the orthographic projection of each second sub-signal line on the substrate.

7. The display panel according to claim 6, characterized in that: The at least two second electrodes and the at least two second signal sub-lines are alternately arranged along a first direction of the substrate.

8. The display panel according to claim 6, characterized in that: A line width of the first electrode in the second direction is greater than a line width of the second electrode in the first direction.

9. The display panel according to claim 6, characterized in that: The distance between the edge of the first sub-signal line close to the binding area and the edge of the first electrode away from the binding area is greater than the line width of the second sub-signal line in the first direction and / or the line width of the second electrode in the first direction, and the distance between the edge of the first sub-signal line close to the binding area and the edge of the first electrode away from the binding area is less than the distance between the edge of the second sub-signal line close to the second electrode and the edge of the second electrode close to the second sub-signal line.

10. The display panel according to claim 1, characterized in that: It includes a display area, a binding area located on one side of the display area, and a routing area located on a side of the display area away from the binding area, the power signal line includes a first sub-signal line, the first sub-signal line is located in the routing area, the display panel also includes a cathode arranged on a side of the auxiliary electrode away from the substrate, at least part of the cathode is located in the routing area, the first sub-signal line is located on a side of the cathode away from the binding area, and the orthographic projection of the cathode on the substrate does not overlap with the orthographic projection of the first sub-signal line on the substrate.

11. The display panel according to claim 10, characterized in that: At least a portion of the cathode has an orthographic projection on the substrate that overlaps with an orthographic projection of the auxiliary electrode on the substrate, and at least a portion of the cathode is in surface contact with the auxiliary electrode.

12. The display panel according to claim 11, characterized in that: The display panel further comprises a structural film layer arranged between the auxiliary electrode and the cathode, wherein a groove is arranged in the structural film layer, the groove is located in the routing area, and at least part of the cathode contacts the auxiliary electrode through the groove surface.

13. The display panel according to claim 12, characterized in that: The structural film layer is provided with overlapping holes, the overlapping holes are located in the display area, and at least part of the cathode is connected to the auxiliary electrode through the overlapping holes.

14. A display device, characterized in that: A display panel comprising any one of claims 1 to 13.

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