Display panel and display device

Abstract

The invention discloses a display panel and a display device.The display panel comprises a substrate, a first conducting layer, a first insulating layer, a second conducting layer, a second insulating layer, a third conducting layer, a third insulating layer, a fourth conducting layer and a packaging layer which are sequentially arranged in a stacked mode, the packaging layer extends to a connecting area from a display area, and the edge of the packaging layer serves as a boundary; the connecting area is divided into a first connecting sub-area and a second connecting sub-area, and the second connecting sub-area is located between the first connecting sub-area and the bending area; the display panel comprises a first wire arranged in the connecting area, the first wire comprises a first line segment arranged in the first connecting sub-area and a second line segment arranged in the second connecting sub-area, at least part of the first line segment and at least part of the second line segment are formed in different conductive layers, the second line segment is composed of a first conductive part and a second conductive part, and the first conductive part is arranged in the first connecting sub-area. A first conductive portion is formed in the first conductive layer, and a second conductive portion is formed in the second conductive layer. The design can improve poor display of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In the prior art, display panels have poor display, and the main reason is that the signal line is abnormal. After further analysis, it is found that there is a problem of broken signal line between the bending area and the display area of ​​the display panel. Summary of the invention

[0003] The present application provides a display panel and a display device, which can improve the display defects of the display panel.

[0004] The present application provides a display panel, which includes a display area, a connection area and a bending area arranged in sequence along a first direction, and the display panel includes a substrate, a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer, a third insulating layer, a fourth conductive layer and an encapsulation layer which are stacked in sequence, wherein the encapsulation layer extends from the display area to the connection area, and the connection area is divided into a first connection sub-area and a second connection sub-area with an edge of the encapsulation layer as a boundary, and the second connection sub-area is located between the first connection sub-area and the bending area; the display panel includes a first routing line arranged in the connection area, the first routing line includes a first line segment arranged in the first connection sub-area and a second line segment arranged in the second connection sub-area, at least parts of the first line segment and the second line segment are formed in different conductive layers, and the second line segment is composed of a first conductive part and a second conductive part, the first conductive part is formed in the first conductive layer, and the second conductive part is formed in the second conductive layer.

[0005] In one embodiment, the first line segment includes a first end portion away from the second line segment, a second end portion connected to the second line segment, and a main body portion connecting the first end portion and the second end portion, wherein the first end portion is formed in the fourth conductive layer.

[0006] Preferably, the material of the first conductive layer includes molybdenum.

[0007] Preferably, the material of the second conductive layer includes molybdenum.

[0008] Preferably, the third conductive layer includes a titanium layer and a molybdenum layer which are stacked.

[0009] Preferably, the fourth conductive layer includes a titanium layer, an aluminum layer and a titanium layer which are stacked.

[0010] In one embodiment, the main body of the first line segment is formed in the fourth conductive layer.

[0011] Preferably, the display panel further comprises a light-emitting pixel, and the fourth conductive layer is connected to an anode via hole of the light-emitting pixel.

[0012] Preferably, the display panel further comprises a light-emitting pixel and a fifth conductive layer, the fifth conductive layer is connected to the anode via hole of the light-emitting pixel, and the fourth conductive layer is located on a side of the fifth conductive layer away from the anode.

[0013] In one embodiment, the main body of the first line segment includes a third conductive portion formed in the first conductive layer and electrically connected to the first conductive portion, a fourth conductive portion formed in the second conductive layer and electrically connected to the second conductive portion, and a fifth conductive portion formed in the third conductive layer and electrically connected to the fourth conductive portion.

[0014] In one embodiment, the second end portion is composed of a sixth conductive portion formed in the first conductive layer and a seventh conductive portion formed in the second conductive layer, the sixth conductive portion electrically connecting the main body portion and the first conductive portion, and the seventh conductive portion electrically connecting the main body portion and the second conductive portion.

[0015] In one embodiment, the display panel further includes: a dam, which is arranged between the third insulating layer and the encapsulation layer, the dam is located in the first connecting sub-area and has a distance from the edge of the encapsulation layer, at least a part of the orthographic projection of the edge of the third insulating layer on the substrate is located within the orthographic projection area of ​​the dam on the substrate, and the third insulating layer is a planarization layer; wherein the main body and the second end of the first line segment are electrically connected through a via, and the via is located on the side of the dam away from the bending area or the via is located on the side of the edge of the third insulating layer away from the bending area.

[0016] In one embodiment, there are a plurality of first routing lines, and the main bodies of the first line segments in at least two of the first routing lines are formed in different conductive layers.

[0017] Preferably, orthographic projections of the main parts of the first line segments in at least two of the first routing lines on the substrate are at least partially overlapped.

[0018] In one embodiment, at least two first routings include a first target routing and a second target routing; the main parts of the first target routings are all formed in the fourth conductive layer, and the main parts of the second target routings include a third conductive part formed in the first conductive layer, a fourth conductive part formed in the second conductive layer, and a fifth conductive part formed in the third conductive layer.

[0019] Preferably, the first target routing line is used to transmit a reset signal; and the second target routing line is used to transmit at least one of a clock signal, a first power signal or a second power signal.

[0020] In one embodiment, in a direction close to the display area, the orthographic overlap area of ​​the main body of the first line segments in at least two of the first routing lines on the substrate increases. The present application also provides a display device, comprising a display panel as described in any of the above embodiments.

[0021] Different from the prior art, the beneficial effects of the present application are as follows: the display panel of the present application includes a substrate, a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer, a third insulating layer, a fourth conductive layer and an encapsulation layer which are stacked in sequence; the display panel includes a display area, a connection area and a bending area which are arranged in sequence along a first direction; the connection area is divided into a first connection sub-area and a second connection sub-area with the edge of the encapsulation layer as the boundary; the first routing line includes a first line segment arranged in the first connection sub-area and a second line segment arranged in the second connection sub-area; the second line segment is composed of a first conductive part and a second conductive part; since the first conductive part and the second conductive part are close to the substrate and are covered with multiple organic layers and inorganic layers, the film layer in the corresponding area will not be locally raised, thereby avoiding the problem of breakage of the conductive layer due to water vapor corrosion; and the double-layer conductive layer can provide better transmission performance. The design of the present application can ultimately improve the problem of poor display. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0023] Figure 1 is a schematic structural diagram of an embodiment of a display panel of the present application;

[0024] Figure 2 yes Figure 1 A schematic diagram of a top view structure corresponding to the display panel in FIG.

[0025] Figure 3 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0026] Figure 4 is a structural schematic diagram of another embodiment of the display panel of the present application;

[0027] Figure 5 is a schematic diagram of a top view of another embodiment of the display panel of the present application;

[0028] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the film layer M to N in the middle region;

[0029] Figure 7 It is a schematic structural diagram of an embodiment of the display device of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] It should be noted that the terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0032] In the prior art, a plurality of metal layers are arranged between the bending area and the display area of ​​the display panel for signal transmission, and the existing display panel includes at least three metal layers. Although the plurality of metal layers is beneficial to reducing the impedance of the signal, the arrangement of the plurality of metal layers also causes the local terrain of the corresponding area to be raised. Inorganic layers and organic layers are usually used as insulating layers between adjacent metal layers. The local terrain is raised, making the inorganic layer thinner than other positions, and the stress at the corresponding position of the organic layer is greater, which will eventually increase the water absorption of the organic layer, causing the inorganic layer to break and then causing the metal layer to be corroded and broken, causing abnormal signal transmission and resulting in poor display of the display panel.

[0033] See also Figure 1 and Figure 2In a first aspect, the present application provides a display panel 10, the display panel 10 includes a display area AA, a connection area CA and a bending area BA arranged in sequence along a first direction X, the display panel 10 includes a substrate 110, a first conductive layer 120, a first insulating layer 130, a second conductive layer 140, a second insulating layer 150, a third conductive layer 160, a third insulating layer 170, a fourth conductive layer 180 and an encapsulation layer 190 arranged in sequence, wherein the encapsulation layer 190 extends from the display area AA to the connection area CA, and the edge of the encapsulation layer 190 is used as a boundary to divide the connection area CA into a first connection sub-area CA1 and a second connection sub-area CA2. The connecting sub-area CA2, the second connecting sub-area CA2 is located between the first connecting sub-area CA1 and the bending area BA; the display panel 10 includes a first routing line L arranged in the connecting area CA, the first routing line L includes a first line segment L1 arranged in the first connecting sub-area CA1 and a second line segment L2 arranged in the second connecting sub-area CA2, at least parts of the first line segment L1 and the second line segment L2 are formed in different conductive layers, the second line segment L2 is composed of a first conductive portion L21 and a second conductive portion L22, the first conductive portion L21 is formed in the first conductive layer 120, and the second conductive portion L22 is formed in the second conductive layer 140.

[0034] Specifically, the display area AA includes luminous pixels P and a driving circuit Q for driving the luminous pixels P. The bending area BA is used to bend the binding area (not shown) of the display panel 10 to the back of the display panel 10 to reduce the display frame. The connection area CA is provided with a signal line for connecting the signal line between the bending area BA and the display area AA. The display panel 10 includes a first conductive layer 120, a second conductive layer 140, a third conductive layer 160 and a fourth conductive layer 180 for transmitting signals. The display panel 10 includes a first insulating layer 130, a second insulating layer 150 and a third insulating layer 170 for insulating adjacent conductive layers. The display panel 10 also includes an encapsulation layer for protecting the luminous pixels in the display area AA from water vapor corrosion. Among them, the first routing line L arranged in the connection area CA is used to transmit the same signal, and the first routing line L includes a first line segment L1 arranged in the first connection sub-area CA1 and a second line segment L2 arranged in the second connection sub-area CA2, the second line segment L2 is composed of two conductive parts, a first conductive part L21 and a second conductive part L22, that is, the second line segment L2 transmits the signal through a double-layer conductive part, and the first conductive part L21 is located in the first conductive layer 120, and the second conductive part L22 is formed in the second conductive layer 140. The first conductive layer 120 and the second conductive layer 140 are both conductive layers closest to the substrate 110, and are farther from the surface of the display panel 10 on the non-substrate 110 side. Therefore, the first conductive layer 120 and the second conductive layer 140 are covered with multiple insulating layers away from the substrate 110. The setting of the first conductive layer 120 and the second conductive layer 140 does not cause the local terrain of the corresponding area to be raised. The multi-layer insulating layer has a better planarization effect, and the double-layer conductive part can provide better transmission performance. Since the first line segment L1 is protected by the encapsulation layer 190 , the first line segment L1 may be specifically configured in the same manner as the second line segment L2 , and may further include other conductive layers.

[0035] In the prior art, only the transmission performance of the routing is considered by stacking multiple metal layers, but the problems caused by the use of multiple metal layers are not considered, especially the poor coverage of the insulating layer due to too many metal layers, the metal layers being too far away from the substrate, etc., which eventually causes water vapor erosion and causes the metal layer to be corroded and broken. The present application uses a double-layer conductive layer and is closer to the substrate 110, which not only ensures the transmission performance of the routing, but also ensures the flattening effect after coverage to avoid corrosion and breakage of the routing, which can ultimately improve the display quality.

[0036] In one embodiment, see Figure 1 and Figure 2 The first line segment L1 includes a first end F1 away from the second line segment L2, a second end F2 connected to the second line segment L2, and a main body F3 connecting the first end F1 and the second end F2, wherein the first end F1 is formed in the fourth conductive layer 180.

[0037] Specifically, the first line segment L1 includes a first end portion F1, a second end portion F2 and a main body portion F3, which are electrically connected. Figure 1 The first end portion F1 is formed on the fourth conductive layer 180, and can be further electrically connected to the light-emitting pixel P or the driving circuit Q in the display area AA through the fourth conductive layer 180. It should be noted that, in this embodiment, by providing the first line segment L1 including the first end portion F1, the second end portion F2 and the main body portion F3, each portion can be electrically connected to each other using the same or different film layer as other portions, and the electrical connection methods are various and are not specifically limited. For specific embodiments, please refer to the following.

[0038] In a specific application scenario, the signal transmitted by the first line L includes at least one of a reset (Vref) signal, a clock (Scan-CLK), a first power supply (PVGH) signal or a second power supply (PVGL) signal, and the first line L is electrically connected to a drive circuit Q located in the display area AA, and the drive circuit Q includes a GIP (gate drive) circuit.

[0039] In one embodiment, the material of the first conductive layer 120 includes molybdenum.

[0040] In one embodiment, the material of the second conductive layer 140 includes molybdenum.

[0041] In one embodiment, the third conductive layer 160 includes a stacked titanium layer and a molybdenum layer.

[0042] In one embodiment, the fourth conductive layer 180 includes a stacked titanium layer, an aluminum layer, and a titanium layer.

[0043] In one implementation, the materials of the first insulating layer 130 and the second insulating layer 150 include inorganic materials, for example, at least one of silicon nitride, silicon oxide, or silicon oxynitride, and the material of the third insulating layer 170 includes organic materials.

[0044] In one embodiment, see Figure 3 , the main body F3 of the first line segment L1 is formed in the fourth conductive layer 180 .

[0045] Specifically, the first line segment L1 includes a first end portion F1, a second end portion F2 and a main body portion F3, which are electrically connected. Figure 3 The conductive layers in the dashed boxes correspond to Figure 1The difference is that in this embodiment, the third conductive layer 160 is not provided at least in the first connecting sub-region CA1, and the main body F3 of the first line segment L1 is the same as the first end F1 and is formed together in the fourth conductive layer 180, which can make the preparation of the first line segment L1 simpler.

[0046] In one embodiment, the fourth conductive layer 180 includes a stacked titanium layer, an aluminum layer, and a titanium layer, so that the fourth conductive layer 180 has better conductivity. The main body F3 directly uses the fourth conductive layer 180, which can not only simplify the preparation process but also improve the signal transmission performance.

[0047] In one embodiment, the display panel 10 further includes luminous pixels P, and the fourth conductive layer 180 is connected to an anode via hole (not shown) of the luminous pixel P. That is, the fourth conductive layer 180 can be directly electrically connected to the luminous pixel P through the anode.

[0048] In another embodiment, the display panel 10 further includes a light-emitting pixel (not shown) and a fifth conductive layer (not shown), the fifth conductive layer (not shown) is connected to the anode via hole (not shown) of the light-emitting pixel, and the fourth conductive layer is located on a side of the fifth conductive layer away from the anode. That is, the fourth conductive layer 180 can be electrically connected to the light-emitting pixel P through the fifth conductive layer and the anode.

[0049] In one embodiment, see Figure 1 The main body F3 of the first line segment L1 includes a third conductive portion L11 formed in the first conductive layer 120 and electrically connected to the first conductive portion L21, a fourth conductive portion L12 formed in the second conductive layer 140 and electrically connected to the second conductive portion L22, and a fifth conductive portion L13 formed in the third conductive layer 160 and electrically connected to the fourth conductive portion L12.

[0050] Specifically, the third conductive portion L11 in the main body F3 of the first line segment L1 is formed in the same layer as the first conductive portion L21 of the second line segment L2 in the first conductive layer 120, and the fourth conductive portion L12 in the main body F3 of the first line segment L1 is formed in the same layer as the second conductive portion L22 of the second line segment L2 in the second conductive layer 140. That is to say, the main body F3 is at least in the same layer as the second line segment L2 in the first conductive layer 120 and the second conductive layer 140, and the main body F3 also includes a fifth conductive portion L13 formed in the third conductive layer 160, and the fifth conductive portion L13 is electrically connected to the fourth conductive portion L12. The main body F3 transmits signals through three conductive layers. The difference between the main body F3 and the second line segment L2 is that the main body F3 is covered with an encapsulation layer 190, and the encapsulation layer 190 can provide better protection. Therefore, the main body F3 can be provided with more conductive layers than the second line segment L2 to provide better transmission performance.

[0051] In one embodiment, see Figure 1 and Figure 3 The second end portion F2 is composed of a sixth conductive portion L14 formed in the first conductive layer 120 and a seventh conductive portion L15 formed in the second conductive layer 140, the sixth conductive portion L14 electrically connects the main body F3 and the first conductive portion L21, and the seventh conductive portion L15 electrically connects the main body F3 and the second conductive portion L22.

[0052] Specifically, the sixth conductive part L14 is on the same layer as the first conductive part L21, and the seventh conductive part L15 is on the same layer as the second conductive part L22. It can be seen that the second end F2 has the same structure as the conductive part of the second line segment L2. The purpose of this arrangement is to ensure that the double-layer conductive layer (first line segment L1+second end F2) is not only arranged in the second connecting sub-area CA2, but the double-layer conductive layer can also be further extended and arranged in the first connecting sub-area CA1, that is, within the boundary of the encapsulation layer 190. The effect is that the encapsulation layer 190 can better protect the boundary of the double-layer conductive layer by making the orthographic projection of the encapsulation layer 190 on the substrate 110 overlap with the orthographic projection of the double-layer conductive layer on the substrate 110.

[0053] Of course, in some other implementations, the conductive layer used at the second end may also be other film layers.

[0054] In one embodiment, see Figure 4 The display panel 10 also includes a dam 210, which is arranged between the third insulating layer 170 and the encapsulation layer 190. The dam 210 is located in the first connecting sub-area CA1 and has a distance from the edge of the encapsulation layer 190. At least part of the positive projection of the edge of the third insulating layer 170 on the substrate 110 is located within the positive projection area of ​​the dam 210 on the substrate 110, and the third insulating layer 170 is a planarization layer; wherein the main body F3 and the second end F2 of the first line segment L1 are electrically connected through a via H, and the via H is located on the side of the dam 210 away from the bending area BA or the via H is located on the side of the edge of the third insulating layer 170 away from the bending area BA.

[0055] Specifically, the dam 210 is located within the edge of the encapsulation layer 190, and the encapsulation layer 190 will cover the dam 210, and the dam 210 has a distance from the edge of the encapsulation layer 190, so that a better encapsulation effect can be ensured. The third insulating layer 170 is a planarization layer, and the edge of the third insulating layer 170 close to the bending area BA is covered by the dam 210, and the outer side of the dam 210 is covered by the encapsulation layer 190, so that water vapor can be prevented from invading from the third insulating layer 170, and a better water vapor isolation effect can be achieved. This embodiment further considers that the second end F2 and the main body F3 are electrically connected through the via H, and the via H is set on the side of the dam 210 away from the bending area BA or the via H is located on the side of the edge of the third insulating layer 170 away from the bending area BA. On the one hand, the via is away from the edge of the encapsulation layer 190, which has a better protection effect, and on the other hand, the mutual influence between the via H and the dam 210 or the via H and the edge of the third insulating layer 170 is reduced.

[0056] Of course, in some other implementations, the main body and the second end may not be electrically connected through a via, but may be directly electrically connected through a via at the position of the first end.

[0057] In one embodiment, see Figure 5 The number of first lines L is multiple, and the main parts F3 of the first line segments L1 in at least two first lines L are formed in different conductive layers. The display panel 10 includes multiple conductive layers, and the first lines L distributed in different conductive layers are not restricted by wiring in a two-dimensional plane area, so that the wiring area of ​​the first lines L is expanded to a three-dimensional space area, reducing the restrictions on wiring.

[0058] Further, the orthographic projections of the main parts F3 of the first line segments L1 in at least two first lines L on the substrate 110 are at least partially overlapped. The orthographic projections of the main parts F3 of different first lines L on the substrate 110 are at least partially overlapped ( Figure 5 M~N area), so that the wiring space can be utilized, and the wiring area can be reduced by wiring overlap, thereby improving space utilization. For example, Figure 5 The main parts F3 of the different first wiring lines L overlap in the arc angle area close to the display panel 10. It can be seen that compared with Figure 2 , the wiring space in the arc angle position is significantly compressed, that is, the width of the arc angle area is compressed, so that the border of the arc angle of the display panel 10 is very narrow, and the overall screen ratio of the display panel 10 is improved. Of course, the overlapping area can also be other areas, not limited to Figure 4 The embodiments in .

[0059] In one embodiment, see Figure 5 and Figure 6At least two first routing lines L include a first target routing line T1 and a second target routing line T2; the main part F3 of the first target routing line T1 is formed in the fourth conductive layer 180, and the main part F3 of the second target routing line T2 includes a third conductive part L11 formed in the first conductive layer 120, a fourth conductive part L12 formed in the second conductive layer 140, and a fifth conductive part L13 formed in the third conductive layer 160.

[0060] Specifically, the main body F3 of the first target routing T1 and the main body F3 of the second target routing T2 are formed in different conductive layers, and because they are in different conductive layers, the orthographic projection of the main body F3 of the first target routing T1 on the substrate 110 and the orthographic projection of the main body F3 of the second target routing T2 on the substrate 110 at least partially overlap, so that at least the wiring space of at least one of the main body F3 of the first target routing T1 and the main body F3 of the second target routing T2 can be saved, so that the space utilization rate of the routing of the first routing L is higher, so as to compress the display frame, and the third insulating layer 170 is between the main body F3 of the first target routing T1 and the main body F3 of the second target routing T2, and the third insulating layer 170 is an organic material film layer with a relatively thick thickness. Therefore, the influence between the signals of the first target routing T1 and the second target routing T2 can also be avoided, thereby ensuring the stability of the signal.

[0061] In one application scenario, the first target line is used to transmit a reset signal; the second target line is used to transmit at least one of a clock signal, a first power signal, or a second power signal. When a signal line for transmitting at least one of a clock signal, a first power signal, or a second power signal is provided on the display panel 10, the space of the main body of the signal line for transmitting the reset signal can be saved.

[0062] In one embodiment, in the direction close to the display area AA, the orthographic overlap area of ​​the main portion F3 of the first line segment L1 in at least two first lines L on the substrate 110 is increased. By increasing the orthographic overlap area of ​​the main portion F3 of the first line segment L1 in at least two first lines L on the substrate 110 in the direction close to the display area AA, the wiring space utilization rate can be increased in the direction close to the display area AA, thereby reducing the arc angle of the display panel 10, and the side away from the display area AA is a non-display area, and the space utilization rate requirement for wiring will be lower than that of the display area AA.

[0063] See also Figure 7 The present application also provides a display device 20, which includes any display panel 10 as described above.

[0064] Specifically, the display device 20 can be any electronic device such as a notebook, a desktop computer, a tablet computer, a mobile phone, a smart watch, a virtual display terminal, etc., and is not limited here.

[0065] The above description is only an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display panel, characterized in that: The display panel comprises a display area, a connection area and a bending area arranged in sequence along a first direction, and the display panel comprises a substrate, a first conductive layer, a first insulating layer, a second conductive layer, a second insulating layer, a third conductive layer, a third insulating layer, a fourth conductive layer and an encapsulation layer stacked in sequence, wherein the encapsulation layer extends from the display area to the connection area, and the connection area is divided into a first connection sub-area and a second connection sub-area with an edge of the encapsulation layer as a boundary, and the second connection sub-area is located between the first connection sub-area and the bending area; The display panel includes a first routing line arranged in the connection area, the first routing line includes a first line segment arranged in the first connection sub-area and a second line segment arranged in the second connection sub-area, at least parts of the first line segment and the second line segment are formed in different conductive layers, the second line segment is composed of a first conductive part and a second conductive part, the first conductive part is formed in the first conductive layer, and the second conductive part is formed in the second conductive layer.

2. The display panel according to claim 1, characterized in that: The first line segment includes a first end portion away from the second line segment, a second end portion connected to the second line segment, and a main body portion connecting the first end portion and the second end portion, wherein the first end portion is formed in the fourth conductive layer; Preferably, the material of the first conductive layer includes molybdenum; Preferably, the material of the second conductive layer includes molybdenum; Preferably, the third conductive layer comprises a stacked titanium layer and a molybdenum layer; Preferably, the fourth conductive layer includes a titanium layer, an aluminum layer and a titanium layer which are stacked.

3. The display panel according to claim 2, characterized in that: The main body of the first line segment is formed in the fourth conductive layer; Preferably, the display panel further comprises a light-emitting pixel, and the fourth conductive layer is connected to an anode via hole of the light-emitting pixel; Preferably, the display panel further comprises a light-emitting pixel and a fifth conductive layer, the fifth conductive layer is connected to the anode via hole of the light-emitting pixel, and the fourth conductive layer is located on a side of the fifth conductive layer away from the anode.

4. The display panel according to claim 2, characterized in that: The main body of the first line segment includes a third conductive portion formed in the first conductive layer and electrically connected to the first conductive portion, a fourth conductive portion formed in the second conductive layer and electrically connected to the second conductive portion, and a fifth conductive portion formed in the third conductive layer and electrically connected to the fourth conductive portion.

5. The display panel according to claim 2, characterized in that: The second end portion is composed of a sixth conductive portion formed in the first conductive layer and a seventh conductive portion formed in the second conductive layer, the sixth conductive portion electrically connecting the main body portion and the first conductive portion, and the seventh conductive portion electrically connecting the main body portion and the second conductive portion.

6. The display panel according to claim 5, characterized in that: The display panel further includes: A dam is arranged between the third insulating layer and the encapsulation layer, the dam is located in the first connecting sub-region and has a distance from the edge of the encapsulation layer, at least part of the orthographic projection of the edge of the third insulating layer on the substrate is located within the orthographic projection area of ​​the dam on the substrate, and the third insulating layer is a planarization layer; wherein the main body and the second end of the first line segment are electrically connected through a via, and the via is located on the side of the dam away from the bending region or the via is located on the side of the edge of the third insulating layer away from the bending region.

7. The display panel according to claim 2, characterized in that: There are a plurality of first routing lines, and the main bodies of the first line segments in at least two of the first routing lines are formed in different conductive layers; Preferably, orthographic projections of the main parts of the first line segments in at least two of the first routing lines on the substrate are at least partially overlapped.

8. The display panel according to claim 7, characterized in that: The at least two first routings include a first target routing and a second target routing; The main body of the first target routing wire is formed in the fourth conductive layer, and the main body of the second target routing wire includes a third conductive portion formed in the first conductive layer, a fourth conductive portion formed in the second conductive layer, and a fifth conductive portion formed in the third conductive layer; Preferably, the first target routing line is used to transmit a reset signal; and the second target routing line is used to transmit at least one of a clock signal, a first power signal or a second power signal.

9. The display panel according to claim 7, characterized in that: In a direction approaching the display area, an overlapping area of ​​the orthographic projections of the main parts of the first line segments in at least two of the first routing lines on the substrate increases.

10. A display device, characterized in that: The invention comprises a display panel as claimed in any one of claims 1 to 9.

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