Display panel and display device

Abstract

This invention discloses a display panel and a display device, belonging to the field of display technology. The display panel includes a bending area and a non-bending area, and includes at least a first metal layer and a second metal layer. The bending area includes multiple bending traces, each of which includes at least a first sub-segment and a second sub-segment. The first sub-segment is located in the first metal layer, and the second sub-segment is located in the second metal layer. The first and second sub-segments are interconnected. The display device includes the aforementioned display panel. This invention can effectively prevent the propagation of cracks in the bending traces after bending without adding a protective layer for the circuitry and by reducing the panel thickness. It avoids the complete breakage of the entire bending trace in its cross-section, which helps ensure the transmission stability of the driving signal in the bending area, improves the panel yield, and enhances the display quality of the display panel.

Description

Technical Field

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

[0002] With the development of display technology, Organic Light-Emitting Diode (OLED) displays have gradually become the new type of display device after LCDs due to their numerous advantages such as self-illumination, fast response, wide viewing angle, high brightness, vibrant colors, thinness, and low power consumption. Furthermore, with the booming development of OLED display panels, they have been widely used in flexible displays, bendable displays, and other products. Currently, the demand for narrow bezel products is gradually increasing. Compared to LCD technology, OLED display panels can reduce the width of the bottom bezel by using pad bending, which has become an effective technical means to achieve a narrow bezel effect. The flexible substrate of an OLED display has a display area and a wiring area located at the bottom bezel. A large number of conductive traces transmitting signals in the display area are integrated into the wiring area at the bottom bezel of the OLED display panel, resulting in a relatively wide wiring area in the bottom bezel. The pad bending method involves bending the wiring area, folding and fixing it behind the display area. In subsequent module manufacturing processes, the driving unit is bound to the wiring area through a pad structure, achieving the requirement of a full-screen, borderless, or narrow bezel display.

[0003] When the bending radius of an OLED display panel is small, or when the stress generated by bending for a long time causes stress concentration in the conductive traces in that area, the conductive traces in the film layer of the bending area are easily damaged by stress and cracks when the stress is too high during the bending process. The cracks can extend to the entire cross-section of the conductive traces, causing the signal traces to break. This can lead to signal transmission failure, abnormal display, and other issues, making it impossible to guarantee the panel yield and making mass production feasible.

[0004] Currently, the industry uses double-sided protective layers in bending areas—that is, adding upper and lower protective layers to the corresponding stack—to prevent cracks in the circuitry during bending. However, when the thickness of the protective layer on one side changes, the stress on the neutral layer (the neutral layer is the surface where the material's expansion and contraction reach equilibrium during bending; that is, the surface whose length remains constant regardless of the change in the cross-section of the bent film) also changes. This still poses a risk of cracks in the circuitry in bending areas. Furthermore, the stacking of double-sided protective layers tends to increase the thickness of the panel, which is not conducive to achieving a thinner panel design.

[0005] Therefore, providing a display panel and display device that can reduce the thickness of the film layers and effectively prevent the extension of cracks after the circuit is bent is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a display panel and a display device to solve the problem in the prior art that bent wiring is easily damaged by stress, resulting in wire breakage and thus poor panel display.

[0007] The present invention discloses a display panel, comprising: a bending area and a non-bending area, the display panel comprising at least a first metal layer and a second metal layer; the bending area comprising multiple bending traces, the bending traces comprising at least a first sub-segment and a second sub-segment, the first sub-segment being located in the first metal layer and the second sub-segment being located in the second metal layer; the first sub-segment and the second sub-segment being interconnected.

[0008] Based on the same inventive concept, the present invention also discloses a display device, which includes the above-described display panel.

[0009] Compared with the prior art, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0010] The display panel of the present invention includes a bending area and a non-bending area. The display panel may include a display area and a non-display area surrounding the display area. The non-display area may include a bending area and a bonding area. Along a first direction, the bonding area is located on the side of the bending area away from the display area. The bonding area may have multiple pads for subsequently bonding driver chips or flexible circuit boards, providing drive signals for signal traces within the display area. The display panel can be bent and folded in the bending area, causing the bonding area to bend to the backlight side of the display panel. The display panel provided by the present invention, by folding in the bending area, causes the bonding area for subsequently bonding driver chips or flexible circuit boards to be folded to the backlight side of the display panel for fixation, thus achieving the requirement of a full-screen, borderless or narrow-bezel display panel. The present invention sets the display panel to include at least a first metal layer and a second metal layer. The bending area has multiple bent traces. One end of the bent trace can be connected to a signal trace transmitting electrical signals within the display area, and the other end of the bent trace can be connected to a pad in the bonding area, thereby enabling the function of providing drive signals to the signal traces in the display area through the bent traces of the bending area via the subsequently bonded driver chip or flexible circuit board. This invention provides a bent trace comprising at least a first segment and a second segment. The first segment is located in a first metal layer, and the second segment is located in a second metal layer. That is, a bent trace comprises at least a first segment and a second segment located in different metal layers, and the first and second segments are interconnected. This ensures that the same bent trace in the bending area is made of at least two layers of metal. When the display panel is bent in the bending area, even if the first segment of the bent trace located in the first metal layer is damaged during bending, the second segment of the bent trace located in the second metal layer can still maintain its integrity. Alternatively, even if the bending... The second segment of the bent trace located in the second metal layer is damaged during bending, but the first segment of the bent trace located in the first metal layer can still maintain its integrity. That is, at least one segment of the same bent trace located in one metal layer can avoid bending cracks. Thus, without adding a protective layer for the circuit and reducing the panel thickness, it is possible to effectively prevent the cracks from extending after bending, and avoid the situation where the entire bent trace breaks completely in its cross-section. This is beneficial to ensure the transmission stability of the drive signal in the bending area, improve the panel yield, and enhance the display quality of the display panel.

[0011] Of course, any product implementing this invention need not necessarily achieve all of the technical effects described above at the same time.

[0012] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0014] Figure 1 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of the present invention;

[0015] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of the display panel after it has been bent in the bending area;

[0016] Figure 3 yes Figure 1 A schematic diagram of a cross-sectional structure along the A-A' direction;

[0017] Figure 4 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention;

[0019] Figure 6 yes Figure 1 A magnified view of a section of a winding line;

[0020] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure along the B-B' direction;

[0021] Figure 8 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention;

[0022] Figure 9 yes Figure 7 A magnified view of a section of a winding line;

[0023] Figure 10 yes Figure 9 Schematic diagram of the cross-sectional structure along the C1-C1' direction;

[0024] Figure 11 yes Figure 9 Schematic diagram of the cross-sectional structure along the C2-C2' direction;

[0025] Figure 12 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention;

[0026] Figure 13 yes Figure 12 A magnified view of a section of a winding line;

[0027] Figure 14 yes Figure 13 A schematic diagram of the structure of the bent trace in the bent state;

[0028] Figure 15 yes Figure 13Schematic diagram of the cross-sectional structure along the D-D' direction;

[0029] Figure 16 yes Figure 12 Another enlarged view of a section of a winding line;

[0030] Figure 17 yes Figure 16 A schematic diagram of the structure of the bent trace in the bent state;

[0031] Figure 18 yes Figure 1 Schematic diagram of the cross-sectional structure along the F-F' direction;

[0032] Figure 19 yes Figure 1 Another structural diagram of a curved cable;

[0033] Figure 20 yes Figure 19 Schematic diagram of the cross-sectional structure along the E-E' direction;

[0034] Figure 21 yes Figure 1 Another cross-sectional structural diagram along the A-A' direction;

[0035] Figure 22 yes Figure 1 Another cross-sectional structural diagram along the A-A' direction;

[0036] Figure 23 This is a schematic diagram of the planar structure of the display device provided in an embodiment of the present invention. Detailed Implementation

[0037] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0038] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0039] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0040] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0041] Various modifications and variations can be made to this invention without departing from its spirit or scope, as will be apparent to those skilled in the art. Therefore, this invention is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this invention can be combined with each other without contradiction.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0043] Please refer to the reference. Figures 1-3 , Figure 1 This is a schematic diagram of the planar structure of the display panel provided in an embodiment of the present invention. Figure 2 yes Figure 1 A cross-sectional view of the display panel after it has been bent in the bending area. Figure 3 yes Figure 1 A cross-sectional structural diagram along the A-A' direction. The display panel 000 provided in this embodiment includes: a bending area WA and a non-bending area NWA. The display panel 000 includes at least a first metal layer 01 and a second metal layer 02.

[0044] The bending area WA includes multiple bending traces 10. Each bending trace 10 includes at least a first sub-segment 10A and a second sub-segment 10B. The first sub-segment 10A is located in the first metal layer 01, and the second sub-segment 10B is located in the second metal layer 02.

[0045] The first sub-segment 10A and the second sub-segment 10B are interconnected.

[0046] Specifically, the display panel 000 in this embodiment can be an organic light-emitting diode (OLED) display panel. The display panel 000 includes a bending area WA and a non-bending area NWA. The display panel 000 can include a display area AA and a non-display area NA surrounding the display area AA. The non-display area NA can include the bending area WA and a bonding area BA, such as... Figure 1 As shown, along the first direction Y, the bonding area BA is located on the side of the bending area WA away from the display area AA. The bonding area BA can be equipped with multiple pads for subsequent bonding of driver chips or flexible circuit boards, providing drive signals for signal traces within the display area AA. For example... Figure 2As shown, the display panel 000 in this embodiment can be bent and folded in the bending area WA, so that the bonding area BA bends to the backlight surface 000B of the display panel 000 (the backlight surface 000B can be understood as the side of the display panel that is away from the light-emitting display). All areas of the display panel 000 other than the bending area WA can be understood as the non-bending area NWA in this embodiment, such as the display area AA and the bonding area BA. The display panel 000 provided in this embodiment, by folding in the bending area WA, allows the bonding area BA of the subsequent bonding driver chip or flexible circuit board to be folded to the backlight surface 000B of the display panel 000 for fixation, thus achieving the requirement of a full-screen borderless or narrow-bezel display panel 000.

[0047] In this embodiment, the display panel 000 includes at least a first metal layer 01 and a second metal layer 02. Optionally, the display panel 000 may further include a flexible substrate. The flexible substrate 00 is located below the first metal layer 01 and the second metal layer 02 and is used to fabricate the film structure of the display panel 000 on the flexible substrate 00. The first metal layer 01 and the second metal layer 02 can be understood as metal conductive film layers in the film structure of the display panel 000, used to fabricate some metal conductive structures. In this embodiment, the positional relationship between the first metal layer 01 and the second metal layer 02 is not limited. Figure 3This example illustrates the situation by taking the first metal layer 01 located on the side of the second metal layer 02 closer to the flexible substrate 00. The bending area WA of the display panel 000 is provided with multiple bent traces 10. Optionally, one end of the bent trace 10 can be connected to the signal traces transmitting electrical signals within the display area AA, and the other end of the bent trace 10 can be connected to the pads of the bonding area BA. This enables the subsequent bonding of a driver chip or flexible circuit board via the bent traces 10 of the bending area WA to provide driving signals to the signal traces of the display area AA. In this embodiment, to address the problem that the bending trace 10 in the bending area WA is prone to cracking due to bending in the prior art, and that adding protective layers above and below the bending trace 10 can easily affect the panel thickness, the bending trace 10 is configured to include at least a first sub-segment 10A and a second sub-segment 10B. The first sub-segment 10A is located in the first metal layer 01, and the second sub-segment 10B is located in the second metal layer 02. That is, a bending trace 10 includes at least a first sub-segment 10A and a second sub-segment 10B located in different metal layers, and the first sub-segment 10A and the second sub-segment 10B are connected to each other, so that the same bending trace 10 in the bending area WA is made of at least two layers of metal. When the display panel 000 is bent in the bending area WA, even if the first sub-segment 10A of the bending trace 10 located in the first metal layer 01 is bent... Even if damage occurs during bending, the second segment 10B of the bent trace 10 located in the second metal layer 02 can still maintain its integrity. Alternatively, even if the second segment 10B of the bent trace 10 located in the second metal layer 02 is damaged during bending, the first segment 10A of the bent trace 10 located in the first metal layer 01 can still maintain its integrity. That is, at least one segment of the same bent trace 10 located in one metal layer can avoid bending cracks. Thus, without adding a protective layer for the circuit and reducing the panel thickness, it is possible to effectively prevent the cracks of the bent trace 10 from extending after bending, and avoid the situation where the entire bent trace 10 completely breaks in its cross-section. This is beneficial to ensuring the transmission stability of the drive signal in the bending area WA, improving the panel yield, and enhancing the display quality of the display panel 000.

[0048] It is understood that this embodiment does not specifically limit the shape of the first segment 10A and the second segment 10B included in the bent trace 10. They can be straight or other shapes, as long as the first segment 10A and the second segment 10B located in different metal layers are connected together to form a bent trace 10 with strong fracture resistance. This embodiment Figure 3This is merely an example illustrating that the first sub-segment 10A and the second sub-segment 10B are elongated structures. The first sub-segment 10A and the second sub-segment 10B located in different metal layers can be interconnected through multiple conductive connection parts to form a connection structure of a bent trace 10. In specific implementations, the shape and connection method of the first sub-segment 10A and the second sub-segment 10B located in different metal layers can also be other implementation methods, which are not limited in this embodiment.

[0049] It should be noted that the diagram in this embodiment is only an example of the structure of the display panel 000. In specific implementations, the structure of the display panel includes, but is not limited to, this. It may also include other structures that can realize the display function, such as pixel circuit structures. A circular polarizer and a cover plate structure may also be provided on the light-emitting side of the display panel 000. A support layer, a foam layer and other buffer structures may also be provided on the backlight side of the display panel 000. This embodiment will not elaborate on these details. For a more detailed understanding, please refer to the structure of organic light-emitting diode display panels in related technologies.

[0050] In some alternative embodiments, please continue to refer to the references. Figures 1-3 In this embodiment, the extension direction of the bent trace 10 is the same as the direction from the bent area WA to the non-bent area NWA.

[0051] This embodiment explains that the bent trace 10 is used to provide drive signals to the signal traces of the display area AA after the display panel 000 is bent in the bending area WA. The driver chip or flexible circuit board subsequently bonded to the backlight surface 000B of the display panel 000 is driven by the bent trace 10 in the bending area WA. The extension direction of the bent trace 10 can be from the bending area WA to the non-bending area NWA, that is... Figure 1 The first direction Y is shown in the diagram to reduce the length space occupied by the bending trace 10 in the bending area WA in the first direction Y.

[0052] It is understandable that, such as Figure 4 and Figure 5 As shown, Figure 4 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention. Figure 5 This is a schematic diagram of another planar structure of the display panel provided in this embodiment of the invention. The extension direction of the bent trace 10 in this embodiment can be understood as the overall extension direction of the bent trace 10. When the bent trace 10 is a non-linear structure such as a broken line or a curve, its extension direction can be understood as the overall extension path of the bent trace 10, such as... Figure 4 and Figure 5 The overall extension direction of the bent trace 10 shown can also be understood as the direction from the bent area WA to the non-bent area NWA, i.e., the first direction Y shown in the figure, rather than the extension direction of a certain segment of the bent trace 10.

[0053] In some alternative embodiments, please continue to refer to the references. Figures 1-3 In this embodiment, a first insulating layer 03 is included between the first metal layer 01 and the second metal layer 02.

[0054] This embodiment explains that a first insulating layer 03 may be included between the first metal layer 01 and the second metal layer 02 used to fabricate the bent trace 10 in the display panel 000, so that the first metal layer 01 and the second metal layer 02 are mutually insulated. Thus, the first sub-segment 10A made of the first metal layer 01 and the second sub-segment 10B made of the second metal layer 02 are also mutually insulated. The first sub-segment 10A and the second sub-segment 10B of the bent trace 10 made of different metal layers are also included between the first insulating layer 03. When at least one sub-segment of the same bent trace 10 located in one metal layer may crack when bent, the first insulating layer 03 can further prevent the crack from extending to the sub-segment of the other metal layer, thereby further preventing the extension of cracks in the bent trace 10 after bending, improving the yield of the panel, and improving the display quality of the display panel 000.

[0055] It is understood that the bending trace 10 set in the bending area WA in this embodiment can be made of the metal film layer included in the panel itself. That is, the first metal layer 01 and the second metal layer 02 can be the metal film layer that originally exists in the panel film layer structure, which helps to reduce the number of film layers in the panel and facilitates the realization of a thin panel design.

[0056] In some alternative embodiments, please refer to the references. Figure 1 , Figure 6 , Figure 7 and Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 6 yes Figure 1 A magnified view of a section of a winding line. Figure 7 yes Figure 6 A schematic diagram of the cross-sectional structure along the B-B' direction. Figure 8 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention. Figure 9 yes Figure 7 A magnified view of a section of a winding line. Figure 10 yes Figure 9 A schematic diagram of the cross-sectional structure along the C1-C1' direction. Figure 11 yes Figure 9 A cross-sectional structural diagram along the C2-C2' direction (understandably, this is to clearly illustrate the structure of the bent wiring). Figure 6 and Figure 9(Transparency filling has been performed). In this embodiment, the display panel 000 also includes a third metal layer 04, which is located between the first metal layer 01 and the second metal layer 02. The bent trace 10 also includes an intermediate trace 10C, which is located in the third metal layer 04.

[0057] The first sub-segment 10A and the second sub-segment 10B are interconnected on the periphery of the intermediate trace 10C.

[0058] This embodiment explains that the bent trace 10 in the bending area WA of the display panel 000 also includes an intermediate trace 10C located in the third metal layer 04. The third metal layer 04 is located between the first metal layer 01 and the second metal layer 02, that is, in the direction Z perpendicular to the plane where the display panel 000 is located, the intermediate trace 10C is located between the first sub-segment 10A and the second sub-segment 10B. Optionally, the intermediate trace 10C can be in direct contact with the film structure of the first sub-segment 10A and the second sub-segment 10B to achieve the same signal transmitted by the bent trace 10; or, optionally, the intermediate trace 10C and the first sub-segment 10A and the second sub-segment 10B can be connected at the end of the bent trace 10 and insulated from each other in the film structure to achieve the same signal of the bent trace 10.

[0059] Optionally, in this embodiment, the first sub-segment 10A and the second sub-segment 10B are interconnected on the periphery of the intermediate trace 10C. That is, the first sub-segment 10A and the second sub-segment 10B included in the bent trace 10 are not only interconnected, but also interconnected on the periphery of the intermediate trace 10C. Further optional, such as Figure 6 and Figure 7 As shown, the first sub-segment 10A can be a long strip structure, the second sub-segment 10B can be a long strip structure, and the intermediate trace 10C can also be a long strip structure. The first sub-segment 10A and the second sub-segment 10B form a structure including the intermediate trace 10C around the intermediate trace 10C; further optionally, such as Figures 8-10 As shown, the first sub-segment 10A can be a block structure, the second sub-segment 10B can be a block structure, and the intermediate trace 10C can also be a long structure. Multiple block-structured first sub-segments 10A can be arranged along the length of the intermediate trace 10C, and multiple block-structured second sub-segments 10B can be arranged along the length of the intermediate trace 10C. The first sub-segments 10A and second sub-segments 10B form a structure including the intermediate trace 10C around its periphery. At this time, the first sub-segments 10A and second sub-segments 10B located on different layers can be connected through vias passing through the first insulating layer 03. Specifically, to achieve the connection between the first sub-segments 10A and second sub-segments 10B on different layers, the first sub-segment 10A can be an L-shaped block structure, and the second sub-segment 10B can be an L-shaped block structure, such as... Figure 9As shown, the main block portion 10A1 of the first sub-segment 10A is used to surround the periphery of the intermediate trace 10C. The extension portion 10A2 of the first sub-segment 10A is used to connect with the main block portion 10B1 of the second sub-segment 10B through a third via K3. The main block portion 10B1 of the second sub-segment 10B is used to surround the periphery of the intermediate trace 10C. The extension portion 10B2 of the second sub-segment 10B is used to connect with the main block portion 10A1 of the first sub-segment 10A through a fourth via K4 (e.g., ...). Figures 9-11 (as shown); or the first sub-segment 10A and the second sub-segment 10B can be other shapes. This embodiment does not limit the shape and arrangement of the first sub-segment 10A and the second sub-segment 10B, as long as the first sub-segment 10A and the second sub-segment 10B are connected to each other on the periphery of the intermediate trace 10C. When the display panel 000 is bent in the bending area WA, even if the first sub-segment 10A of the bending trace 10 located in the first metal layer 01 is damaged during bending, and the second sub-segment 10B of the bending trace 10 located in the second metal layer 02 is also damaged during bending, the intermediate trace 10C can still maintain its integrity. That is, at least the intermediate trace 10C located in the third metal layer 04 of the same bending trace 10 can be protected, which more reliably avoids the generation of bending cracks. Without adding a protective layer for the circuit and reducing the thickness of the panel, it can effectively prevent the extension of cracks after bending the bending trace 10, and avoid the situation where the entire bending trace 10 is completely broken in its radial direction, which can further improve the yield of the panel.

[0060] Optionally, in this embodiment, the bent trace 10 in the bending area WA can be made using a metal film layer already present in the panel. That is, the first metal layer 01, the second metal layer 02, and the third metal layer 03 can be metal film layers that are already present in the panel's film layer structure, which helps to reduce the number of film layers in the panel and facilitates a thinner panel design. Alternatively, in some other optional embodiments, the bent trace 10 in the bending area WA can all be made of the same conductive metal material. For example, the materials of the first metal layer 01, the second metal layer 02, and the third metal layer 03 can all be multilayer composite structures of aluminum and titanium (such as Ti-Al-Ti), which can reduce the resistance of the bent trace 10, improve its conductivity, and reduce impedance, thereby improving the reliability of signal transmission on the bent trace 10.

[0061] In some alternative embodiments, please refer to the references. Figures 12-14 , Figure 12 This is a schematic diagram of another planar structure of the display panel provided in an embodiment of the present invention. Figure 13 yes Figure 12 A magnified view of a section of a winding line. Figure 14 yes Figure 13The diagram shows the structure of the bent trace in a bent state (it can be understood that this is to clearly illustrate the structure of the bent trace). Figure 13 and Figure 14 (Transparency fill has been applied). In this embodiment, along the radial direction X of the middle trace 10C, multiple first segments 10A and multiple second segments 10B are interconnected on the periphery of the middle trace 10C to form a spiral structure.

[0062] This embodiment explains that when the bent trace 10 includes a first segment 10A, a second segment 10B, and an intermediate trace 10C located in three different metal layers, the first segment 10A and the second segment 10B can be block-shaped structures, and the intermediate trace 10C can be a strip-shaped structure. Multiple block-shaped first segments 10A can be arranged along the length direction of the intermediate trace 10C (the overall extension direction of the bent trace 10, as shown in the first direction Y). Multiple block-shaped second segments 10B can be arranged along the length direction of the intermediate trace 10C. The first segments 10A and the second segments 10B form a structure including the intermediate trace 10C around its periphery. For the same bent trace 10, along the radial direction X of the intermediate trace 10C, multiple first segments 10A and multiple second segments 10B are interconnected around the intermediate trace 10C to form a spiral structure (similar to a spring structure surrounding the intermediate trace 10C). Optionally, as... Figures 12-14As shown, in this embodiment, along the radial direction X of the intermediate trace 10C, multiple first segments 10A and multiple second segments 10B are interconnected around the intermediate trace 10C to form a spiral structure. The orthographic projection of the intermediate trace 10C onto the plane of the display panel 000 can be arranged to overlap with the orthographic projections of the multiple first segments 10A onto the plane of the display panel 000. That is, in the overall elongated structure of the intermediate trace 10C, multiple first segments 10A are arranged sequentially on one side of the intermediate trace 10C. The length extension direction of each first segment 10A can be different from the length extension direction of the intermediate trace 10C (the overall extension direction of the bent trace 10, as shown in the first direction Y), to form a structure where the orthographic projections of the first segments 10A onto the plane of the display panel 000 intersect with the orthographic projections of the intermediate trace 10C onto the plane of the display panel 000. The orthographic projection of the surface overlaps with the orthographic projections of multiple second segments 10B on the plane where the display panel 000 is located. That is, in the overall long strip structure of the intermediate trace 10C, multiple second segments 10B are arranged sequentially on the other side of the intermediate trace 10C. The length extension direction of each second segment 10B can be different from the length extension direction of the intermediate trace 10C, so as to form a structure in which the orthographic projection of the first segment 10A on the plane where the display panel 000 is located intersects with the orthographic projection of the intermediate trace 10C on the plane where the display panel 000 is located. Furthermore, along the length extension direction of the intermediate trace 10C, multiple first segments 10A are arranged sequentially, and multiple second segments 10B are arranged sequentially. The orthographic projection of at least one first segment 10A on the plane where the display panel 000 is located also needs to intersect with the orthographic projection of at least one second segment 10B on the plane where the display panel 000 is located, forming a spiral structure of interconnected first segments 10A and second segments 10B around the intermediate trace 10C.

[0063] Optional, such as Figure 13 and Figure 15 As shown, Figure 15 yes Figure 13 A cross-sectional structural diagram along the D-D' direction shows that the first sub-segment 10A and the second sub-segment 10B, located in different metal layers, can be connected through vias passing through the first insulating layer 03. Specifically, the first end 10AA of the first sub-segment 10A and the first end 10BA of the second sub-segment 10B can be positioned on one side of the intermediate trace 10C, while the second ends 10AB of the first sub-segment 10A and the second ends 10BB of the second sub-segment 10B can be positioned on the other side of the intermediate trace 10C; a first sub-segment 10A (e.g., ...) Figure 13 and Figure 14 The first end 10AA of the first sub-segment 10A0) and a second sub-segment 10B (as in...) Figure 13 and Figure 14The first end 10BA of the second sub-segment 10B0 is connected through the first via K1 passing through the first insulating layer 03, and the same first sub-segment 10A (e.g. Figure 13 and Figure 14 The second end 10AB of the first sub-segment 10A0 and another second sub-segment 10B (as shown in the image) Figure 13 and Figure 14 The second end 10BB of the second sub-segment 10B00 is connected through the second via K2 passing through the first insulating layer 03.

[0064] In this embodiment, along the radial direction X of the intermediate route 10C, multiple first segments 10A and multiple second segments 10B are interconnected on the periphery of the elongated intermediate route 10C, forming a spiral structure. This spiral structure and interconnected first and second segments 10A create a protective point around the intermediate route 10C. When the route is bent, the spirally interconnected first and second segments 10A deform under stress, concentrating the stress on the two edges of the bent route 10. Figure 14 The schematically shown edge regions J1 and J2 of the bent trace 10 (that is, the ends of the first segment 10A and the second segment 10B forming the spiral structure) keep the overall middle trace 10C in a protected state. Therefore, damage to the middle trace 10C of the bent trace 10 can be avoided. Even if the first segment 10A and the second segment 10B around the middle trace 10C crack during bending, it can avoid affecting the signal transmission on the middle trace 10C, thereby improving the display effect of the panel.

[0065] In some alternative embodiments, please continue to refer to the references. Figures 12-14 In this embodiment, the orthographic projection of the first sub-segment 10A onto the plane where the display panel 000 is located and the orthographic projection of the second sub-segment 10B onto the plane where the display panel 000 is located intersect to form a first acute angle α.

[0066] The first acute angle α ranges from 30 degrees to 60 degrees. Preferably, the first acute angle α is 45 degrees.

[0067] This embodiment explains that in the same curved routing line 10, along the radial X of the intermediate routing line 10C, multiple first sub-segments 10A and multiple second sub-segments 10B are interconnected on the periphery of the elongated intermediate routing line 10C, forming a spiral structure. The angle formed by the intersection of the orthographic projections of the first sub-segment 10A and the second sub-segment 10B on the same plane as the display panel 000 can be set as an acute angle, i.e., a first acute angle α, and the angle range of the first acute angle α is 30 degrees to 60 degrees. Preferably, the angle of the first acute angle α is 45 degrees to avoid the angle between the orthographic projections of the first sub-segment 10A and the second sub-segment 10B on the same plane as the display panel 000 being too large, which would affect the formed spiral structure. Assuming the angle of the first acute angle α is large, greater than 60 degrees, then... Figure 14 In the bending configuration of the medium-bend routing 10, the spiral routing structure deforms under stress, and the gap between the ends of two adjacent first segments 10A in the edge regions J1 and J2 of the concentrated stress point (such as...) Figure 14 If the gap M (as shown in the diagram) is large, the gap between the ends of two adjacent second segments 10B will also be large, making it easier for cracks to extend towards the central trace 10C. Therefore, in this embodiment, the angle formed by the intersection of the orthographic projection of the first segment 10A on the plane of the display panel 000 and the orthographic projection of the second segment 10B on the plane of the display panel 000 is set as an acute angle, namely the first acute angle α, and the angle range of the first acute angle α is 30 degrees to 60 degrees. Preferably, the angle of the first acute angle α is 45 degrees, which can ensure that the formed spiral line plays a protective role on the periphery of the central trace 10C as much as possible, which helps to minimize the possibility of cracks extending towards the central trace 10C when bending.

[0068] In some alternative embodiments, please refer to the references. Figure 12 , Figure 16 and Figure 17 , Figure 16 yes Figure 12 Another enlarged view of a section of a winding line. Figure 17 yes Figure 16 The diagram shows the structure of the bent trace in a bent state (it can be understood that this is to clearly illustrate the structure of the bent trace). Figure 16 and Figure 17 (Transparency filling was performed). In this embodiment, the direction from the bend area WA to the non-bend area NWA is as follows: the bend area WA includes a first area WA1 and a second area WA2 located on opposite sides of the first area WA1. The distance from the second area WA2 to the non-bend area NWA is less than the distance from the first area WA1 to the non-bend area NWA.

[0069] The distance L1 between two adjacent first segments 10A within the first zone WA1 is less than the distance L2 between two adjacent first segments 10A within the second zone WA2;

[0070] The distance L3 between two adjacent second sub-segments 10B within the first zone WA1 is less than the distance L4 between two adjacent second sub-segments 10B within the second zone WA2.

[0071] This embodiment explains that in the same bent routing line 10, when multiple first segments 10A and multiple second segments 10B are interconnected around the periphery of the elongated intermediate routing line 10C along the radial direction X of the intermediate routing line 10C, forming a spiral structure, they can be arranged in different areas of the bending area WA. The arrangement density of the first segments 10A and the arrangement density of the second segments 10B are different. Specifically, the arrangement density is different along the direction from the bending area WA to the non-bending area NWA (e.g., ...). Figure 12 As shown in the first direction Y), the bending region WA includes a first region WA1 and a second region WA2 located on opposite sides of the first region WA1. That is, the first region WA1 can be understood as the middle region of the bending region WA in the first direction Y, and the second region WA2 can be understood as the edge region of the bending region WA in the first direction Y. The distance from the second region WA2 to the non-bending region NWA is less than the distance from the first region WA1 to the same non-bending region NWA. In this embodiment, the distance L1 between two adjacent first segments 10A within the first region WA1 is set to be less than the distance L2 between two adjacent first segments 10A within the second region WA2. That is, the distance L1 between two adjacent first segments 10A within the first region WA1 is smaller, resulting in a higher density of multiple first segments 10A within the first region WA1. Similarly, the distance L2 between two adjacent first segments 10A within the second region WA2 is larger, resulting in a lower density of multiple first segments 10A within the second region WA2. Likewise, the distance L2 between two adjacent first segments 10A within the first region WA1 is... The distance L3 between two sub-segments 10B is less than the distance L4 between two adjacent second sub-segments 10B within the second zone WA2. This means that the distance L3 between two adjacent second sub-segments 10B within the first zone WA1 is smaller, resulting in a higher density of multiple second sub-segments 10B within the first zone WA1. Conversely, the distance L4 between two adjacent second sub-segments 10B within the second zone WA2 is larger, resulting in a lower density of multiple second sub-segments 10B within the second zone WA2. This leads to a dense design of the spiral lines within the first zone WA1 in the middle area of ​​the bending zone WA. Figure 17When the intermediate bend trace 10 is bent, the spiral trace structure deforms under stress. The edge regions J3 and J4, which are the points of concentrated stress, are also concentrated in the first region WA1 of the bend region WA. Since the spiral traces in the first region WA1 are densely arranged, the bending stress can be concentrated more on the spiral trace structure around the intermediate trace 10C. This can further effectively prevent the crack from extending to the intermediate trace 10C and further reduce the possibility of the intermediate trace 10C of the bend trace 10 breaking.

[0072] In some optional implementations, please continue to refer to the reference. Figures 1-3 In this embodiment, a bent trace 10 includes a first sub-segment 10A and a second sub-segment 10B. Both the first sub-segment 10A and the second sub-segment 10B extend along the direction from the non-bend area NWA to the bend area WA (as shown in the first direction Y).

[0073] The orthographic projection of the first sub-segment 10A onto the plane where the display panel 000 is located overlaps with the orthographic projection of the second sub-segment 10B onto the plane where the display panel 000 is located.

[0074] The first sub-segment 10A and the second sub-segment 10B are connected to each other by a connecting part 10D, which passes through the first insulating layer 03.

[0075] This embodiment explains that the bent trace 10 includes at least a first sub-segment 10A and a second sub-segment 10B. The first sub-segment 10A is located in the first metal layer 01, and the second sub-segment 10B is located in the second metal layer 02. When the first sub-segment 10A and the second sub-segment 10B are connected to each other, a bent trace 10 may include a long strip-shaped first sub-segment 10A extending along the length extension direction of the bent trace 10, and a bent trace 10 may include a long strip-shaped second sub-segment 10B extending along the length extension direction of the bent trace 10. The orthographic projection of the first sub-segment 10A on the plane where the display panel 000 is located overlaps with the orthographic projection of the second sub-segment 10B on the plane where the display panel 000 is located and is connected to each other through the connecting part 10D, forming a bent trace 10 including two metal layers, such that the same bent trace 10 in the bending area WA is at least made of double metal layers. When the display panel 000 is bent in the bending area WA, even if the bent trace 10 is located in the first metal layer 01, Even if the first segment 10A is damaged during bending, the second segment 10B of the bent trace 10 located in the second metal layer 02 can still maintain its integrity. Alternatively, even if the second segment 10B of the bent trace 10 located in the second metal layer 02 is damaged during bending, the first segment 10A of the bent trace 10 located in the first metal layer 01 can still maintain its integrity. The long strip-shaped first segment 10A and the long strip-shaped second segment 10B can be electrically connected through the connecting part 10D passing through the first insulating layer 03. Even if a segment of one metal layer is damaged and cracks, the segment of the other metal layer can still ensure signal transmission. Thus, without adding a protective layer for the circuit and reducing the panel thickness, it is possible to effectively prevent the crack from extending after bending the bent trace 10, and avoid the situation where the entire bent trace 10 completely breaks in its cross-section. This is beneficial to ensuring the transmission stability of the drive signal in the bending area WA, improving the panel yield, and enhancing the display quality of the display panel 000.

[0076] Optional, such as Figure 18 As shown, Figure 18 yes Figure 1 A cross-sectional structural diagram along the F-F' direction is shown. The orthographic projection of the connecting part 10D onto the plane where the display panel 000 is located is within the orthographic projection range of the first sub-segment 10A onto the plane where the display panel 000 is located. The side surface of the first sub-segment 10A facing the second sub-segment 10B and the side surface of the second sub-segment 10B facing the first sub-segment 10A are connected by the connecting part 10D. That is, the radial cross-sectional pattern of the bent trace 10 at the location of the connecting part 10D is as follows. Figure 18 The I-shaped structure shown.

[0077] It is understood that this embodiment does not limit the structure of the connecting part 10D, and it can be as follows: Figure 3The conductive connection structure shown, which is a plurality of block-shaped through holes filled in the first insulating layer 03, can also be other connection structures, as long as they can connect the first sub-segment 10A and the second sub-segment 10B of the strip together. This embodiment does not limit the specific connection structure.

[0078] In some alternative embodiments, please refer to the references. Figure 1 , Figure 19 and Figure 20 , Figure 19 yes Figure 1 Another structural diagram of a curved cable. Figure 20 yes Figure 19 A cross-sectional structural diagram along the E-E' direction (understandably, this is to clearly illustrate the structure of the bent wiring). Figure 19 (Transparency fill has been applied). In this embodiment, the connecting portion 10D includes a first side 10D1 and a second side 10D2.

[0079] The first edge portion 10AL1 of the first sub-segment 10A and the first edge portion 10BL1 of the second sub-segment 10B are connected by the first side 10D1, and the second edge portion 10AL2 of the first sub-segment 10A and the second edge portion 10BL2 of the second sub-segment 10B are connected by the second side 10D2.

[0080] The bent trace 10 formed by the first side 10D1, the second side 10D2, the first sub-segment 10A, and the second sub-segment 10B is a hollow tubular structure. Optionally, the orthographic projection of the first side 10D1 of the connecting portion 10D onto the plane where the display panel 000 is located does not overlap with the orthographic projection of the first sub-segment 10A onto the plane where the display panel 000 is located, and the orthographic projection of the second side 10D2 of the connecting portion 10D onto the plane where the display panel 000 is located does not overlap with the orthographic projection of the first sub-segment 10A onto the plane where the display panel 000 is located.

[0081] This embodiment explains that the bent trace 10 includes at least a first segment 10A and a second segment 10B. The first segment 10A is located in the first metal layer 01, and the second segment 10B is located in the second metal layer 02. When the first segment 10A and the second segment 10B are connected to each other through a connecting part 10D, the first side 10D1 and the second side 10D2 of the connecting part 10D can form a hollow tubular structure of the bent trace 10 with the first segment 10A and the second segment 10B. The hollow part in the middle of the tubular structure of the bent trace 10 is made of the material of the first insulating layer 03. Therefore, when a bending operation is performed in the bending area WA, even if the bent trace 10 is located in the first metal layer 01, If the first segment 10A of the bent trace 10 is damaged during bending, the second segment 10B of the bent trace 10 located in the second metal layer 02 can still maintain its integrity. Alternatively, even if the second segment 10B of the bent trace 10 located in the second metal layer 02 is damaged during bending, the first segment 10A of the bent trace 10 located in the first metal layer 01 can still maintain its integrity. Furthermore, the material of the first insulating layer 03 in the hollow position can also serve as a stress-bearing layer during bending, preventing any cracks from extending further to the intact segments and avoiding the complete breakage of the entire bent trace 10 in its cross-section. This helps to ensure the transmission stability of the drive signal in the bending area WA.

[0082] In some alternative embodiments, please refer to the references. Figure 1 and Figure 21 , Figure 21 yes Figure 1 Another cross-sectional structural diagram along the A-A' direction. In this embodiment, the first metal layer 01 and the second metal layer 02 are in contact with each other.

[0083] This embodiment explains that the first metal layer 01 where the first sub-segment 10A of the bent trace 10 is located and the second metal layer 02 where the second sub-segment 10B is located can also be in direct contact. That is, there is no insulating layer between the first metal layer 01 and the second metal layer 02. The first metal layer 01 and the second metal layer 02 are directly stacked, which helps to reduce the film thickness occupied by the bent trace 10.

[0084] Optional, such as Figure 21 As shown, the bent trace 10 made of the first metal layer 01 and the second metal layer 02 that are in contact with each other can be structured in such a way as follows: a bent trace 10 includes a first segment 10A and a second segment 10B. Both the first segment 10A and the second segment 10B extend along the direction from the non-bending area NWA to the bending area WA (the first direction Y as shown in the figure).

[0085] The orthographic projection of the first sub-segment 10A onto the plane where the display panel 000 is located overlaps with the orthographic projection of the second sub-segment 10B onto the plane where the display panel 000 is located.

[0086] The surface of the first sub-segment 10A away from the second sub-segment 10B includes a plurality of first grooves 10AK, and the surface of the second sub-segment 10B away from the first sub-segment 10A includes a plurality of second grooves 10BK.

[0087] The orthographic projection of the first groove 10AK onto the plane where the display panel 000 is located lies between the orthographic projections of the two adjacent second grooves 10BK onto the plane where the display panel is located.

[0088] This embodiment explains that when the first metal layer 01 and the second metal layer 02, which are directly stacked, are used to fabricate the first segment 10A and the second segment 10B of the bent trace 10, multiple first grooves 10AK can be formed on the surface of the first segment 10A away from the second segment 10B. The multiple first grooves 10AK are arranged sequentially along the first direction Y. The surface of the second segment 10B away from the first segment 10A includes multiple second grooves 10BK. The multiple first grooves 10AK are arranged sequentially along the first direction Y. By forming groove structures on the upper and lower surfaces of the bent trace 10, the generation of stress during bending of the bent trace 10 is reduced. The bending stress is reduced, and in this embodiment, the orthographic projection of the first groove 10AK on the plane where the display panel 000 is located is between the orthographic projections of the two adjacent second grooves 10BK on the plane where the display panel is located. That is, the first groove 10AK and the second groove 10BK are staggered on the upper and lower surfaces of the bending trace 10. The staggered arrangement of grooves can further reduce the bending stress generated when the bending trace 10 is bent, and avoid the situation where the bending trace 10 completely breaks on its cross-section when the display panel 000 is bent in the bending area WA. This is beneficial to ensure the transmission stability of the drive signal in the bending area WA and improve the product yield.

[0089] In some alternative embodiments, please continue to refer to the references. Figure 1 and Figure 21 In this embodiment, in the direction Z perpendicular to the plane where the display panel 000 is located, the depth of the first groove 10AK is less than the thickness of the first sub-segment 10A, and the depth of the second groove 10BK is less than the thickness of the second sub-segment 10B.

[0090] This embodiment explains that by creating groove structures on the upper and lower surfaces of the bent trace 10 to reduce the bending stress generated during bending, the depth of the grooves can be set to be less than the thickness of the sub-segment itself. That is, in the direction Z perpendicular to the plane where the display panel 000 is located, the depth of the first groove 10AK is less than the thickness of the first sub-segment 10A, and the depth of the second groove 10BK is less than the thickness of the second sub-segment 10B. Optionally, such as... Figure 21As shown, in the direction Z perpendicular to the plane where the display panel 000 is located, the depth of the first groove 10AK is less than or equal to half the thickness of the first sub-segment 10A, and the depth of the second groove 10BK is less than half the thickness of the second sub-segment 10B. This ensures that the first groove 10AK does not penetrate the first sub-segment 10A and the second groove 10BK does not penetrate the second sub-segment 10B. It also avoids the grooves being too deep, which could cause the bent trace 10 to break when bent. This can further improve the transmission stability of the drive signal in the bending area WA and improve the display quality.

[0091] In some alternative embodiments, please refer to the references. Figure 1 and Figure 22 , Figure 22 yes Figure 1 Another cross-sectional structural diagram along the A-A' direction. In this embodiment, along the direction from the bending area WA to the non-bending area NWA (as shown in the first direction Y in the figure), the bending area WA includes a first area WA1 and a second area WA2 located on opposite sides of the first area WA1. The distance from the second area WA2 to the non-bending area NWA is less than the distance from the first area WA1 to the non-bending area NWA.

[0092] Along the direction from the first zone WA1 to the second zone WA2 (as shown in the first direction Y in the figure), the width W1 of the first groove 10AK in the first zone WA1 is greater than the width W2 of the first groove 10AK in the second zone WA2, and the width W3 of the second groove 10BK in the first zone WA1 is greater than the width W4 of the second groove 10BK in the second zone WA2.

[0093] Optionally, in some other alternative embodiments, the width of the grooves opened on the upper and lower surfaces of the bent trace 10 in the direction from the second region WA2 to the first region WA1 can have a gradual trend, that is, the closer to the first region WA1, the wider the groove is, and the farther away from the first region WA1, the narrower the groove is (not shown in the figure), so that the bent trace 10 can release the bending stress generated under the bending shape through the groove more uniformly.

[0094] This embodiment explains that the bent trace 10 in the bending area WA of the display panel 000 includes a first sub-segment 10A located in the first metal layer 01 and a second sub-segment 10B located in the second metal layer 02, and the first sub-segment 10A and the second sub-segment 10B are directly stacked. When using groove structures on the upper and lower surfaces of the bent trace 10 to reduce the bending stress generated during bending, the groove in the middle area of ​​the bending area WA can be wider, and the groove in the edge area of ​​the bending area WA can be relatively narrower. Specifically, the groove is set along the direction from the bending area WA to the non-bending area NWA (e.g., ...). Figure 1As shown in the first direction Y), the bending region WA includes a first region WA1 and a second region WA2 located on opposite sides of the first region WA1. That is, the first region WA1 can be understood as the middle region of the bending region WA in the first direction Y, and the second region WA2 can be understood as the edge region of the bending region WA in the first direction Y, such that the distance from the second region WA2 to the non-bending region NWA is less than the distance from the first region WA1 to the same non-bending region NWA. In this embodiment, the width W1 of the first groove 10AK in the first region WA1 is greater than the width W2 of the first groove 10AK in the second region WA2, meaning the width W1 of the first groove 10AK on the lower surface of the first segment 10A in the first region WA1 is larger, and the width W2 of the first groove 10AK on the lower surface of the first segment 10A in the second region WA2 is smaller. Similarly, the width W3 of the second groove 10BK in the first region WA1 is greater than the width W4 of the second groove 10BK in the second region WA2, meaning the width W1 of the first groove 10AK on the lower surface of the first segment 10A in the first region WA1 is smaller. The width W3 of the second groove 10BK on the upper surface of the second sub-segment 10B in WA1 is relatively large, while the width W4 of the second groove 10BK on the upper surface of the second sub-segment 10B in the second region WA2 is relatively small. This makes the groove on the bent trace 10 in the first region WA1 of the middle area of ​​the bending region WA relatively wide. Under bending conditions, the bent trace 10 is deformed by stress. The wider groove in the first region WA1, where the stress is concentrated, can release more bending stress, thereby more effectively preventing cracks from forming in the first region WA1 of the bent trace 10, and further reducing the possibility of the bent trace 10 breaking in the first region WA1.

[0095] In some alternative embodiments, please refer to Figure 23 , Figure 23 This is a schematic diagram of the planar structure of a display device provided in an embodiment of the present invention. The display device 111 provided in this embodiment includes the display panel 000 provided in the above embodiment of the present invention. Figure 23 This embodiment uses a mobile phone as an example to illustrate the display device 111. It is understood that the display device 111 provided in this embodiment can be any other display device 111 with display functions, such as a computer, television, or in-vehicle display device; this invention does not impose specific limitations on this. The display device 111 provided in this embodiment has the beneficial effects of the display panel 000 provided in this embodiment. For details, please refer to the specific descriptions of the display panel 000 in the above embodiments; these will not be repeated here.

[0096] As can be seen from the above embodiments, the display panel and display device provided by the present invention achieve at least the following beneficial effects:

[0097] The display panel of the present invention includes a bending area and a non-bending area. The display panel may include a display area and a non-display area surrounding the display area. The non-display area may include a bending area and a bonding area. Along a first direction, the bonding area is located on the side of the bending area away from the display area. The bonding area may have multiple pads for subsequently bonding driver chips or flexible circuit boards, providing drive signals for signal traces within the display area. The display panel can be bent and folded in the bending area, causing the bonding area to bend to the backlight side of the display panel. The display panel provided by the present invention, by folding in the bending area, causes the bonding area for subsequently bonding driver chips or flexible circuit boards to be folded to the backlight side of the display panel for fixation, thus achieving the requirement of a full-screen, borderless or narrow-bezel display panel. The present invention sets the display panel to include at least a first metal layer and a second metal layer. The bending area has multiple bent traces. One end of the bent trace can be connected to a signal trace transmitting electrical signals within the display area, and the other end of the bent trace can be connected to a pad in the bonding area, thereby enabling the function of providing drive signals to the signal traces in the display area through the bent traces of the bending area via the subsequently bonded driver chip or flexible circuit board. This invention provides a bent trace comprising at least a first segment and a second segment. The first segment is located in a first metal layer, and the second segment is located in a second metal layer. That is, a bent trace comprises at least a first segment and a second segment located in different metal layers, and the first and second segments are interconnected. This ensures that the same bent trace in the bending area is made of at least two layers of metal. When the display panel is bent in the bending area, even if the first segment of the bent trace located in the first metal layer is damaged during bending, the second segment of the bent trace located in the second metal layer can still maintain its integrity. Alternatively, even if the bending... The second segment of the bent trace located in the second metal layer is damaged during bending, but the first segment of the bent trace located in the first metal layer can still maintain its integrity. That is, at least one segment of the same bent trace located in one metal layer can avoid bending cracks. Thus, without adding a protective layer for the circuit and reducing the panel thickness, it is possible to effectively prevent the cracks from extending after bending, and avoid the situation where the entire bent trace breaks completely in its cross-section. This is beneficial to ensure the transmission stability of the drive signal in the bending area, improve the panel yield, and enhance the display quality of the display panel.

[0098] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, characterized by, The display panel comprises: a bending area and a non-bending area, the display panel comprising at least a first metal layer and a second metal layer; the bending area comprises a plurality of bending traces, the bending trace comprising at least a first sub-section and a second sub-section, the first sub-section being located on the first metal layer, and the second sub-section being located on the second metal layer; the first sub-section and the second sub-section are connected to each other; a first insulating layer is arranged between the first metal layer and the second metal layer; the display panel further comprises a third metal layer, the third metal layer being arranged between the first metal layer and the second metal layer, and the bending trace further comprises an intermediate trace, the intermediate trace being located on the third metal layer; the first sub-section and the second sub-section are connected to each other at the periphery of the intermediate trace; in the same bending trace, a plurality of first sub-sections and a plurality of second sub-sections are connected to each other at the periphery of the intermediate trace in the radial direction of the intermediate trace to form a spiral structure; the projection of the intermediate trace on the plane of the display panel and the projection of the plurality of first sub-sections on the plane of the display panel overlap with each other, and the projection of the intermediate trace on the plane of the display panel and the projection of the plurality of second sub-sections on the plane of the display panel overlap with each other; a plurality of first sub-sections are arranged in sequence along the extension direction of the intermediate trace, and a plurality of second sub-sections are arranged in sequence along the extension direction of the intermediate trace; the projection of at least one first sub-section on the plane of the display panel and the projection of at least one second sub-section on the plane of the display panel cross each other; the first end of the first sub-section and the first end of the second sub-section are located on one side of the intermediate trace, and the second end of the first sub-section and the second end of the second sub-section are located on the other side of the intermediate trace; the first end of one first sub-section and the first end of one second sub-section are connected by a first via, and the second end of the same first sub-section and the second end of another second sub-section are connected by a second via.

2. The display panel of claim 1, wherein, The extension direction of the bending trace is the same as the direction in which the bending area points to the non-bending area.

3. The display panel of claim 1, wherein, The projection of the first sub-section on the plane of the display panel and the projection of the second sub-section on the plane of the display panel cross each other to form a first acute angle; The angle of the first acute angle ranges from 30 degrees to 60 degrees.

4. The display panel of claim 3, wherein, The angle of the first acute angle is 45 degrees.

5. The display panel of claim 1, wherein, In the direction in which the bending area points to the non-bending area, the bending area comprises a first area and second areas located on the opposite sides of the first area, and the distance from the second area to the non-bending area is smaller than the distance from the first area to the non-bending area; The distance between two adjacent first sub-sections in the first area is smaller than the distance between two adjacent first sub-sections in the second area; The distance between two adjacent second sub-sections in the first area is smaller than the distance between two adjacent second sub-sections in the second area.

6. The display panel of claim 1, wherein, One bending trace comprises one first sub-section, and one bending trace comprises one second sub-section; the first sub-section and the second sub-section both extend in the direction in which the non-bending area points to the bending area. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The connecting portion includes a first side edge and a second side edge.

7. The display panel of claim 6, wherein, The first edge portion of the first sub-section and the first edge portion of the second sub-section are connected through the first side edge, and the second edge portion of the first sub-section and the second edge portion of the second sub-section are connected through the second side edge. The first side edge and the second side edge are hollow tubular structures. The first side edge and the second side edge are hollow tubular structures.

8. The display panel of claim 7, wherein, The connecting portion is located within the projection range of the first sub-section on the plane of the display panel.

9. The display panel of claim 6, wherein, The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first metal layer and the second metal layer are in contact with each other.

10. The display panel of claim 1, wherein, One of the bending traces includes one of the first sub-sections, and one of the bending traces includes one of the second sub-sections.

11. The display panel of claim 10, wherein, The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer.

12. The display panel of claim 11, wherein, The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer.

13. The display panel of claim 11, wherein, The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer.

14. A display device comprising: The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting portion penetrates the first insulating layer. The first sub-section and the second sub-section are connected to each other through a connecting portion, and the connecting

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