Display panel and display device

Abstract

The invention discloses a display panel and a display device, relates to the technical field of display, and is used for at least relieving the technical problem that a higher step is formed above an edge section of a first wire in the related technology. The display panel comprises a substrate, a first wire, an inorganic insulating layer, a second wire, a first flat layer and a third wire, the first wire comprises a first main body section and a first edge section which are connected with each other; the inorganic insulating layer exposes the first main body section, and the inorganic insulating layer comprises a first insulating part covering the first edge section; the second wire comprises a second main body section and a second edge section which are connected with each other, the second main body section is in contact with the first main body section, and the second edge section covers at least part of the first insulating part; the first flat layer covers the second edge section and exposes the second main body section; and the third wire is in contact with the second main body section and extends to the first flat layer.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a display panel and display device. Background Technology

[0002] In related technologies, a multilayer metal trace stack design is typically used to reduce the impedance of power lines. For example, in a three-layer metal trace stack design, the first trace, the second trace, and the third trace are stacked sequentially on a substrate. A first planarization layer is placed between the first and second traces to cover the edge segment of the first trace, and a second planarization layer is placed between the second and third traces to cover the edge segment of the second trace. The edge segment of the second trace usually covers the edge segment of the first trace, which results in a higher step above the edge segment of the first trace.

[0003] In the subsequent patterning process of the metal trace above the second trace (such as the third trace), it is necessary to first cover the metal layer corresponding to the metal trace with photoresist. Due to the leveling problem, the photoresist thickness on the step is thinner, which causes the part of the metal trace on the step to be etched, affecting the structural stability of the metal trace. Summary of the Invention

[0004] This application provides a display panel and display device to at least alleviate the technical problem of a high step forming above the edge segment of the first trace in the related art.

[0005] In a first aspect, some embodiments of this application provide a display panel, including: Substrate; The first trace is located in the non-display area and disposed on the substrate, and includes a first main body segment and a first edge segment that are interconnected. An inorganic insulating layer is disposed on the side of the first trace away from the substrate and exposes the first main body segment. The inorganic insulating layer includes a first insulating portion covering the first edge segment. The second trace is located in the non-display area and disposed on the side of the inorganic insulating layer away from the substrate, and includes a second main body segment and a second edge segment connected to each other. The second main body segment contacts the first main body segment, and the second edge segment covers at least a portion of the first insulating portion. A first planarization layer is disposed on the side of the second trace opposite to the substrate, the first planarization layer covering the second edge segment and exposing the second body segment; and The third trace is at least partially located in the non-display area. The third trace is disposed on the side of the first planarization layer opposite to the substrate. The third trace contacts the second main body segment and extends onto the first planarization layer.

[0006] In some embodiments, a projection of the second edge segment on the substrate is within a projection of the first trace on the substrate.

[0007] In some embodiments, the second edge segment includes a contact surface in contact with the first insulating portion, the first insulating portion includes a first side surface close to the second body segment, and a projection of the contact surface on the substrate is within a projection of the first side surface on the substrate.

[0008] In some embodiments, the first insulating portion includes a top surface facing away from the substrate, and the second edge segment covers a portion of the top surface.

[0009] In some embodiments, the display panel further has a display area, the non-display area includes a side bezel area on opposite sides of the display area and a bending area on one side of the display area, the bending area and the side bezel area are located on different sides of the display area; the display panel further includes a second planar layer and a gate driving signal line, the second planar layer is located on the substrate, the gate driving signal line is located in the side bezel area and is disposed on the second planar layer, and is disposed in the same layer as the second trace; the first planar layer covers the second planar layer and the gate driving signal line.

[0010] In some embodiments, the second edge segment covers the first insulating portion, the second planar layer includes a second side surface close to the second edge segment, and the second side surface is in contact with the second edge segment.

[0011] In some embodiments, the second edge segment covers at least part of the second side surface.

[0012] In some embodiments, the inorganic insulating layer further includes a second insulating portion connected to the first insulating portion, and a portion of the second insulating portion is located between the substrate and the second planar layer.

[0013] In some embodiments, the display panel further has a display area, the display panel includes a power supply line located in the non-display area and surrounding part of the display area, and a portion of the power supply line is sequentially connected by the first trace, the second trace, and the third trace; wherein the third trace extends from the non-display area to the display area.

[0014] In some embodiments, a thickness of the inorganic insulating layer is less than a thickness of the first planar layer.

[0015] In a second aspect, some embodiments of the present application provide a display device, the display device including the display panel of any of the embodiments of the first aspect.

[0016] For the display panel provided by the embodiments of the present application, since the inorganic insulating layer covers the first edge section, and the second trace is located on the side of the inorganic insulating layer away from the substrate, the inorganic insulating layer can protect the first edge section of the first trace, so as to avoid the problem that the second trace is broken in the area of the first edge section where side etching occurs. In addition, since the inorganic insulating layer covers the first edge section, the contribution of the insulating layer between the first edge section and the second trace to the height increase of the step on the first edge section can be effectively reduced, so as to reduce the height of the step, and further improve the problem that the third trace is easily etched at the step position, resulting in poor structural stability. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a sectional view of a display panel in the related art; Figure 2 is a structure diagram of a display panel in the related art under an electron microscope; Figure 3 is a sectional view of a display panel provided by some embodiments of the present application; Figure 4 is a sectional view of a display panel provided by some other embodiments of the present application; Figure 5 is a sectional view of a display panel provided by some other embodiments of the present application; Figure 6 is a sectional view of a display panel provided by some other embodiments of the present application; Figure 7 is a sectional view of a display panel provided by some other embodiments of the present application; Figure 8 is a sectional view of a display panel provided by some other embodiments of the present application; Figure 9 is a structure schematic diagram of a display panel provided by some embodiments of the present application; Figure 10 is a structure schematic diagram of a display device provided by some embodiments of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings. The described technical solutions are for illustrative purposes only and should not be construed as limiting the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different technical features. The term "multiple" and similar words indicate two or more, unless otherwise expressly defined.

[0021] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0022] In this application, the descriptions of the various embodiments each have their own emphasis. Parts not described in detail in a particular embodiment can be found in the relevant descriptions of other embodiments. The embodiments, implementation methods, examples, and related technical features of this application can be combined and substituted for each other without conflict.

[0023] In related technologies, such as Figure 1 As shown, the power lines of the display panel 100' are routed in the non-display area. To reduce the impedance of the power lines, a multi-layer metal trace stack design is typically used. Specifically, the display panel 100' includes a substrate 11' and a first trace 12', a second trace 14', and a third trace 16' sequentially stacked on the substrate 11'. The first trace 12', the second trace 14', and the third trace 16' are all used to transmit power signals. A first planarization layer 13' is provided between the first trace 12' and the second trace 14', covering and protecting the edge segment of the first trace 12'. A second planarization layer 15' is provided between the second trace 14' and the third trace 16', covering and protecting the edge segment of the second trace 14'. The edge segment of the second trace 14' typically covers the edge segment of the first trace 12', resulting in a higher step T' above the edge segment of the first trace 12'.

[0024] In the subsequent patterning process of the third trace 16', a layer of photoresist needs to be coated on the metal layer corresponding to the third trace 16'. Due to the leveling problem of the photoresist, the photoresist thickness on the step T' will be thinner, resulting in the third trace 16' being etched on the step T'. For example, please refer to... Figure 2 The portion of the third trace 16' on step T' is partially etched, which poses a risk of breakage to the third trace 16'.

[0025] Based on this, some embodiments of this application provide a display panel and a display device including the display panel.

[0026] like Figures 3 to 8 As shown, the display panel 100 has a non-display area and includes: a substrate 11, a first trace 12, an inorganic insulating layer 13, a second trace 14, a first planarization layer 15, and a third trace 16.

[0027] The first trace 12 is located in the non-display area and disposed on the substrate 11. The first trace 12 includes a first main body segment 121 and a first edge segment 122 that are interconnected. An inorganic insulating layer 13 is disposed on the side of the first trace 12 away from the substrate 11 and exposes the first main body segment 121. The inorganic insulating layer 13 includes a first insulating portion 131 covering the first edge segment 122. The second trace 14 is located in the non-display area and disposed on the side of the inorganic insulating layer 13 away from the substrate 11. The second trace 14 includes a second main body segment 141 and a second edge segment 142 that are interconnected. The second edge segment 142 is in contact with the first body segment 121, and the second edge segment 142 covers at least a portion of the first insulating portion 131; the first planarization layer 15 is disposed on the side of the second trace 14 away from the substrate 11, the first planarization layer 15 covers the second edge segment 142 and exposes the second body segment 141; the third trace 16 is at least partially located in the non-display area, the third trace 16 is disposed on the side of the first planarization layer 15 away from the substrate 11, the third trace 16 contacts the second body segment 141 and extends to the first planarization layer 15.

[0028] For the display panel 100 provided in this embodiment, since the inorganic insulating layer 13 covers the first edge segment 122 and the second trace 14 is located on the side of the inorganic insulating layer 13 away from the substrate 11, the inorganic insulating layer 13 can protect the first edge segment 122 of the first trace 12, so as to avoid the second trace 14 from breaking in the area of ​​the first edge segment 122 where the first edge segment 122 is etched. In addition, since the inorganic insulating layer 13 is used to cover the first edge segment 122, the contribution of the insulating layer between the first edge segment 122 and the second trace 14 to the increase of the step T on the first edge segment 122 can be effectively reduced, so as to reduce the height of the step T and thus improve the problem that the third trace 16 is easily etched at the step T position, resulting in poor structural stability.

[0029] The display panel and the display device provided by the embodiments of the present application will be described below in combination with specific embodiments, and the specific embodiments are described as follows.

[0030] Some embodiments of the present application provide a display panel, such as Figures 3 to 9 As shown in FIG. 1, the display panel 100 has a display area AA and a non-display area NA. For example, the non-display area NA can surround the display area AA. The display panel 100 includes a substrate 11, a first wire 12, an inorganic insulating layer 13, a second wire 14, a first planar layer 15, and a third wire 16.

[0031] The first wire 12 is located in the non-display area NA and disposed on the substrate 11. The first wire 12 includes a first main body segment 121 and a first edge segment 122 connected to each other. The inorganic insulating layer 13 is located on a side of the first wire 12 away from the substrate 11 and exposes the first main body segment 121. The inorganic insulating layer 13 includes a first insulating portion 131 covering the first edge segment 122. In this case, a boundary line between the first main body segment 121 and the first edge segment 122 overlaps with an edge of the inorganic insulating layer 13. The portion covered by the inorganic insulating layer 13 is the first edge segment 122, and the portion not covered by the inorganic insulating layer 13 is the first main body segment 121. Since the inorganic insulating layer 13 covers the first edge segment 122, the inorganic insulating layer 13 can protect the first edge segment 122 of the first wire 12 to avoid the problem of side etching of the first edge segment 122. For example, the first wire 12 has a laminated structure including a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer. The edge of the aluminum metal layer is easily etched away in the subsequent development process, resulting in the problem of side etching of the first edge segment 122. Covering the first edge segment 122 by the inorganic insulating layer 13 can effectively avoid this side etching problem.

[0032] The second wire 14 is located in the non-display area NA and disposed on a side of the inorganic insulating layer 13 away from the substrate 11. The second wire 14 includes a second main body segment 141 and a second edge segment 142 connected to each other. The second main body segment 141 is in contact with the first main body segment 121, and the second edge segment 142 covers at least part of the first insulating portion 131. For example, the second edge segment 142 can completely cover the first insulating portion 131, or the second edge segment 142 can cover part of the first insulating portion 131. Since the inorganic insulating layer 13 protects the first edge segment 122 to avoid the problem of side etching of the first edge segment 122, when the second edge segment 142 is disposed above the first edge segment 122, the second edge segment 142 will not have the problem of cracking.

[0033] The first planar layer 15 is located on the side of the second trace 14 away from the substrate 11, and the first planar layer 15 covers the second edge section 142 and exposes the second main body section 141. The boundary line between the second main body section 141 and the second edge section 142 overlaps with the edge of the first planar layer 15, and the part covered by the first planar layer 15 is the second edge section 142, and the part not covered by the first planar layer 15 is the second main body section 141. As an example, the first planar layer 15 covers part of the first main body section 121, so that the third trace 16 can first climb the edge of the first planar layer 15 and then climb the step T part above the first edge section 122 of the first trace 12 in the process of climbing, which can reduce the height of the third trace 16 in one climbing, thereby helping to avoid the problem that the structure stability of the third trace 16 is easily affected due to the too large climbing height.

[0034] The third trace 16 is at least partially located in the non-display area NA, and the third trace 16 is arranged on the side of the first planar layer 15 away from the substrate 11, and the third trace 16 is in contact with the second main body section 141 and extends to the first planar layer 15. Since the third trace 16 is in contact with the second main body section 141, and the second main body section 141 is in contact with the first main body section 121, the connection of the first trace 12, the second trace 14 and the third trace 16 is realized, thereby effectively ensuring the stability and reliability of signal transmission and reducing the bit error rate.

[0035] In the embodiments of the present application, since the first edge section 122 is covered and protected by the inorganic insulating layer 13, the inorganic insulating layer 13 can have a significantly smaller thickness than the planar layer, so that the height of the step T above the first edge section 122 can be reduced, thereby effectively improving the problem that the third trace 16 is easily etched at the position of the step T, resulting in poor structure stability.

[0036] In some embodiments, the thickness of the inorganic insulating layer 13 is less than the thickness of the first planar layer 15.

[0037] In this way, the thickness of the inorganic insulating layer 13 is small, thereby reducing the height of the step T above the first edge section 122, and thereby effectively improving the problem that the third trace 16 is easily etched at the position of the step T, resulting in poor structure stability.

[0038] In some examples, the thickness of the inorganic insulating layer 13 is less than 1560 nm (nanometers).

[0039] It is worth mentioning that for the display panel 100' in the related art, the thickness of the first planar layer 13' covering the edge section of the first trace 12' is minimized to 1560 nm, while in the embodiment of the present application, since the inorganic insulating layer 13 is adopted, the thickness thereof can be controlled to be less than 1560 nm, so that the step height above the first edge section 122 is reduced, thereby effectively improving the problem that the third trace 16 is easily etched at the step T position, resulting in poor structural stability.

[0040] In some examples, the thickness of the inorganic insulating layer 13 is greater than or equal to 200 nm and less than or equal to 400 nm. For example, the thickness of the inorganic insulating layer 13 can be 200 nm, 210 nm, 220 nm, 230 nm, 240 nm, 250 nm, 260 nm, 270 nm, 280 nm, 290 nm, 300 nm, 310 nm, 320 nm, 330 nm, 340 nm, 350 nm, 360 nm, 370 nm, 380 nm, 390 nm, 400 nm.

[0041] In this way, on the one hand, the inorganic insulating layer 13 can effectively protect the first edge section 122 from side etching, and on the other hand, the thickness of the inorganic insulating layer 13 can be controlled within a smaller range to avoid the problem that the third trace 16 is easily etched at the step T position, resulting in poor structural stability.

[0042] In some embodiments, referring to Figure 9 , the non-display area NA includes a side frame area NA1 located on opposite sides of the display area AA and a bending area NA2 located on one side of the display area AA, and the bending area NA2 and the side frame area NA1 are located on different sides of the display area AA.

[0043] Referring to Figures 3 to 8 , the display panel 100 further includes a second planar layer 17 and a gate drive signal line 18, the second planar layer 17 is located on the substrate 11, and the gate drive signal line 18 is located in the side frame area NA1 and is disposed on the second planar layer 17, and the gate drive signal line 18 is disposed in the same layer as the second trace 14. The first planar layer 15 covers the second planar layer 17 and the gate drive signal line 18.

[0044] In the embodiment, by providing the second planar layer 17, a planarized surface can be provided for the gate drive signal line 18 to facilitate the layout of the gate drive signal line 18. In addition, by disposing the gate drive signal line 18 and the second trace 14 in the same layer, the gate drive signal line 18 and the second trace 14 can be simultaneously manufactured by one photoetching process, thereby reducing the manufacturing cost of the display panel 100.

[0045] As an example, the gate driving signal line 18 can be used to transmit a VGL (Voltage Gate Low) signal.

[0046] It is worth noting that the second planar layer 17 being located on the substrate 11 means that the second planar layer 17 is disposed above the substrate 11, and the second planar layer 17 can be in contact with the substrate 11 or can be spaced apart from the substrate 11 by an intermediate film layer. For example, as shown in FIG. 1, in the case where the inorganic insulating layer 13 only covers the first edge section 122, the second planar layer 17 is in contact with the substrate 11. For another example, as shown in FIG. 2, in the case where the inorganic insulating layer 13 extends and covers the substrate 11, the second planar layer 17 is spaced apart from the substrate 11 by the inorganic insulating layer 13. Figure 3 Figures 4 to 8

[0047] In some embodiments, please refer to Figures 4 to 8 The inorganic insulating layer 13 further includes a second insulating portion 132 connected with the first insulating portion 131, and a portion of the second insulating portion 132 is located between the substrate 11 and the second planar layer 17. The second insulating portion 132 extends along a horizontal direction (perpendicular to the thickness direction of the display panel 100), and the second insulating portion 132 is connected with the first insulating portion 131 by bending.

[0048] In the present embodiment, by extending the inorganic insulating layer 13 to below the second planar layer 17, the layout of the second planar layer 17 can be thus provided with good support, and the structural stability of the display panel 100 is improved.

[0049] In some embodiments, please refer to Figure 5 and Figure 6 The second edge section 142 covers the first insulating portion 131, and the second planar layer 17 includes a second side surface 171 close to the second edge section 142, and the second side surface 171 is in contact with the second edge section 142.

[0050] It is worth noting that in the case where the second side surface 171 and the second edge section 142 are spaced apart from each other, there is a large gap between the second planar layer 17 and the second trace 14, which will cause the top surface of the first planar layer 15 to be concave at the position corresponding to the gap in the process of flow leveling, and the concave is adjacent to the step T above the first edge section 122, thereby causing the side wall of the step T close to the concave to have a long slope, which will affect the flow leveling of the photoresist on the step T in the manufacturing process of the third trace 16, and finally cause the third trace 16 to be partially etched and affect the structural stability thereof.

[0051] ​​In the present embodiment, since the second edge segment 142 covers the first insulating portion 131 and extends to the second flat layer 17 to contact the second side surface 171 of the second flat layer 17, the second edge segment 142 fills the gap to some extent, thus effectively reducing the depth of the recess, shortening the slope of the side wall of the recess near the step T, and improving the structural stability of the third trace 16.

[0052] In some embodiments, referring to Figure 6 , the second edge segment 142 covers at least part of the second side surface 171. As an example, the second edge segment 142 completely covers the second side surface 171.

[0053] In this case, the second edge segment 142 can fill the recess to a greater extent, thus reducing the depth of the recess and improving the structural stability of the third trace 16.

[0054] In some examples, the second edge segment 142 is spaced apart from the surface of the second flat layer 17 away from the substrate 11. This can effectively avoid the second edge segment 142 from contacting the gate driving signal line 18.

[0055] In some embodiments, referring to Figure 7 and Figure 8 , the orthographic projection of the second edge segment 142 on the substrate 11 is within the orthographic projection of the first trace 12 on the substrate 11.

[0056] In this way, the second edge segment 142 is retracted compared to the first edge segment 122 of the first trace 12, which is beneficial to reduce the height of the step T above the first edge segment 122, thus improving the problem that the third trace 16 is easily etched at the position of the step T, resulting in poor structural stability.

[0057] In some examples, referring to Figure 7 , the first insulating portion 131 includes a top surface 1311 away from the substrate 11, and the second edge segment 142 covers part of the top surface 1311.

[0058] By arranging the second edge segment 142 to cover part of the top surface 1311 of the first insulating portion 131, the width of the step T can be reduced, and the two sides of the step T have relatively small slopes, thus effectively improving the problem that the third trace 16 is easily etched at the position of the step T, resulting in poor structural stability.

[0059] In other examples, referring to Figure 8The second edge segment 142 includes a contact surface 1421 which contacts the first insulating portion 131, the first insulating portion 131 includes a first side surface 1312 which is close to the second body segment 141, and a projection of the contact surface 1421 on the substrate 11 is within a projection of the first side surface 1312 on the substrate 11.

[0060] By setting the projection of the contact surface 1421 of the second edge segment 142 on the substrate 11 within the projection of the first side surface 1312 on the substrate 11, the end of the second edge segment 142 which is away from the second body segment 141 is attached to the first side surface 1312, so that the contribution of the second edge segment 142 to the height of the step T can be avoided, the height of the step T is reduced, and the problem that the third trace 16 is easily etched at the position of the step T and thus the structural stability is poor is improved.

[0061] In some embodiments, referring to Figure 9 The display panel 100 has a display area AA and a non-display area NA, and the display panel 100 includes a power line 01 which surrounds part of the display area AA. The power line 01 may, for example, be connected to a low-level power (VSS) signal. Part of the power line 01 is composed of the first trace 12, the second trace 14 and the third trace 16 which are connected in sequence. Among them, Figures 3 to 8 may be Figure 9 a cross-sectional view along the direction of E-E'.

[0062] In the present embodiment, the third trace 16 extends from the non-display area NA to the display area AA. In this case, the third trace 16 is partially located in the non-display area NA and partially located in the display area AA. This is conducive to the connection of the third trace 16 with a signal line (for example, a signal line for realizing power transmission) in the display area AA. In addition, since the first edge segment 122 is covered and protected by the inorganic insulating layer 13, the inorganic insulating layer 13 can have a significantly smaller thickness than the planar layer, so that the height of the step T above the first edge segment 122 is reduced. Therefore, in the patterning process of the third trace 16, the photoresist is less affected by the height of the step T, so that the photoresist has a relatively large thickness on the step T, thereby effectively improving the structural stability of the third trace 16 and further ensuring the stability of signal transmission of the third trace 16.

[0063] In some embodiments, two first edge segments 122 can be provided and located at two ends of the first body segment 121 respectively, and two second edge segments 142 can be provided and located at two ends of the second body segment 141 respectively. In this case, the inorganic insulating layer 13 can cover and protect the two first edge segments 122.

[0064] In some examples, the display panel 100 can further include touch control wires located on the side of the third wires 16 away from the substrate 11. The touch control wires are spaced apart from the third wires 16 by an insulating layer. Since the step T located above the first edge section 122 has a small height, it is also beneficial to ensure that the touch control wires have relatively good structural stability.

[0065] Some embodiments of the present application also provide a display device, as shown in Figure 10 The display device 200 includes the display panel 100 according to any of the above embodiments.

[0066] Since the display device 200 includes the display panel 100, the display device 200 has the technical effects of the display panel 100 described above, which will not be repeated here.

[0067] The above describes the embodiments of the present application in detail, and the principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above description of the present application should not be understood as a limitation.

Claims

1. A display panel, characterized in that, The display panel includes a non-display area and the following components: Substrate; The first trace is located in the non-display area and disposed on the substrate, and includes a first main body segment and a first edge segment that are interconnected. An inorganic insulating layer is disposed on the side of the first trace away from the substrate and exposes the first main body segment. The inorganic insulating layer includes a first insulating portion covering the first edge segment. The second trace is located in the non-display area and disposed on the side of the inorganic insulating layer away from the substrate, and includes a second main body segment and a second edge segment connected to each other. The second main body segment contacts the first main body segment, and the second edge segment covers at least a portion of the first insulating portion. A first planarization layer is disposed on the side of the second trace opposite to the substrate, the first planarization layer covering the second edge segment and exposing the second body segment; and The third trace is at least partially located in the non-display area. The third trace is disposed on the side of the first planarization layer opposite to the substrate. The third trace contacts the second main body segment and extends onto the first planarization layer.

2. The display panel according to claim 1, characterized in that, The orthographic projection of the second edge segment on the substrate is within the range of the orthographic projection of the first trace on the substrate.

3. The display panel according to claim 2, characterized in that, The second edge segment includes a contact surface that contacts the first insulating portion, the first insulating portion including a first side surface near the second body segment, and the orthographic projection of the contact surface on the substrate lies within the range of the orthographic projection of the first side surface on the substrate; or, The first insulating portion includes a top surface facing away from the substrate, and the second edge segment covers a portion of the top surface.

4. The display panel according to claim 1, characterized in that, The display panel also has a display area, and the non-display area includes side frame areas located on opposite sides of the display area and a bent area located on one side of the display area, wherein the bent area and the side frame areas are located on different sides of the display area; The display panel further includes a second planarization layer and a gate driving signal line. The second planarization layer is located on the substrate, and the gate driving signal line is located in the side frame area and disposed on the second planarization layer, and is disposed on the same layer as the second trace. The first planarization layer covers the second planarization layer and the gate drive signal line.

5. The display panel according to claim 4, characterized in that, The second edge segment covers the first insulating portion, and the second planar layer includes a second side surface near the second edge segment, the second side surface being in contact with the second edge segment.

6. The display panel according to claim 5, characterized in that, The second edge segment covers at least a portion of the second side.

7. The display panel according to any one of claims 4-6, characterized in that, The inorganic insulating layer further includes a second insulating portion connected to the first insulating portion, a portion of which is located between the substrate and the second planarization layer.

8. The display panel according to any one of claims 1-6, characterized in that, The display panel also has a display area, and the display panel includes a power line located in the non-display area and surrounding a portion of the display area, a portion of the power line being formed by sequentially connecting the first trace, the second trace, and the third trace. The third trace extends from the non-display area to the display area.

9. The display panel according to any one of claims 1-6, characterized in that, The thickness of the inorganic insulating layer is less than the thickness of the first planarization layer.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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