Display panel, display module and display device

Abstract

The present application provides a display panel, a display module and a display device. The display panel includes a substrate, the substrate includes a display area and a non-display area surrounding at least part of the display area, the non-display area includes a bending area; a signal line is arranged in the non-display area, and the signal line is configured to electrically connect the elements of the display area; wherein the material of at least part of the signal line in the bending area includes a conductive polymer material. The embodiment of the present application prevents the signal line from being easily broken at the bending position by setting the material of at least part of the signal line in the bending area to a conductive polymer material, which is conducive to narrowing the lower frame.

Description

Technical Field

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

[0002] In recent years, as flexible displays have been widely used, people have higher and higher requirements for flexible displays, especially narrow-frame or even frameless displays. However, for the lower frame of the display, since the signal lines are arranged in an array at the lower frame position, and the signal lines of the lower frame need to be bent from the front of the display to the back of the display to conduct the signal lines, if the lower frame is narrowed, the signal lines are prone to breakage, which in turn leads to abnormal display of the screen.

[0003] Therefore, there is an urgent need for a solution that can solve the problem that the signal line is prone to breakage due to the narrowing of the lower frame. Summary of the invention

[0004] The embodiments of the present application provide a display panel, a display module and a display device, which are used to solve the problem that the signal line is easily broken at the bending position.

[0005] In a first aspect, a display panel is provided, comprising a substrate, comprising a display area and a non-display area surrounding at least a portion of the display area, wherein the non-display area comprises a bending area; a signal line is arranged in the non-display area, and the signal line is configured to electrically connect elements of the display area; wherein a material of at least a portion of the signal line in the bending area comprises a conductive polymer material.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the bending zone includes a bending segment, the bending segment includes: a first sub-segment having a first bending curvature, the first bending curvature is greater than or equal to the bending curvature of any bending position in the bending segment, and the material of the first sub-segment is configured as a conductive polymer material.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the conductive polymer material includes a matrix and a conductive filler, the matrix includes at least one of polyethylene, polypropylene, polystyrene, epoxy resin, and phenolic resin, and the conductive filler includes at least one of carbon black, carbon nanotubes, graphene, metals and metal oxides, iodine, arsenic pentafluoride, antimony hexafluoride, and silver perchlorate.

[0008] In combination with the first aspect, in certain implementations of the first aspect, the bending segment also includes: a second sub-segment, connected to a side of the first sub-segment close to the display area; a third sub-segment, connected to a side of the first sub-segment away from the second sub-segment; wherein at least one of the second sub-segment and the third sub-segment is configured as a conductive metal wire.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the second sub-segment and the third sub-segment are both conductive metal wires, and the bending segment is configured as an elliptical arc structure.

[0010] In combination with the first aspect, in some implementations of the first aspect, the second subsegment and the third subsegment are configured as arc structures having a second bending curvature, and the second bending curvature is smaller than the first bending curvature.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the signal line also includes: a first connecting segment, connected to a side of the second sub-segment away from the first sub-segment; a second connecting segment, connected to a side of the third sub-segment away from the first sub-segment; wherein at least part of the material of the first connecting segment and the second connecting segment includes a conductive polymer material.

[0012] In combination with the first aspect, in certain implementations of the first aspect, it also includes a supporting layer, which is located on a side of the substrate away from the signal line, and the supporting layer includes: a first supporting segment, which is located in the display area and a portion of the non-display area; a second supporting segment, which is located in the portion of the non-display area; wherein, in the direction of the orthographic projection of the signal line onto the supporting layer, the first supporting segment overlaps with at least a portion of the first connecting segment, and the second supporting segment overlaps with at least a portion of the second connecting segment.

[0013] In combination with the first aspect, in some implementations of the first aspect, the present invention further includes: a protective layer located on a side of the signal line away from the substrate, the protective layer being configured to cover at least a portion of the bending section of the signal line.

[0014] In combination with the first aspect, in some implementations of the first aspect, the protective layer has a hollow area, and the hollow area exposes the first subsegment.

[0015] In a second aspect, a display module is provided, wherein the display panel includes the display panel described in any one of the above items.

[0016] In a third aspect, a display device is provided, and the display device includes the display module described above.

[0017] The present application provides a display panel, a display module and a display device. The display panel includes a substrate, including a display area and a non-display area surrounding the display area, the non-display area includes a bending area; a signal line is arranged in the non-display area, and the signal line is configured to electrically connect the elements of the display area; wherein the material of at least part of the signal line in the bending area includes a conductive polymer material.

[0018] The embodiment of the present application replaces at least part of the material in the signal line from metal with a conductive polymer material and utilizes the high elongation at break of the conductive polymer material. Even when the lower frame becomes narrower, resulting in a reduction in the overall bending radius of the bending area and an increase in the stress of the signal line, the signal line is not easily broken, which is conducive to the narrowing of the lower frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 The figure shows a top view of the arrangement of signal lines of a display panel.

[0021] Figure 2 Shown Figure 1 Cross-sectional view of the display panel along CC.

[0022] Figure 3 The figure shows a cross-sectional view along CC of a display panel when the lower frame is bent.

[0023] Figure 4 The figure shows a cross-sectional view along CC when the lower frame of the display panel is bent in one embodiment of the present application.

[0024] Figure 5 The present invention provides an embodiment of the present invention. Figure 4 A partial enlarged view of the display panel in the M area is shown.

[0025] Figure 6 The present invention provides an embodiment of the present invention. Figure 5 FIG. 1 is a schematic diagram of a signal line located in a bending area of ​​a display panel.

[0026] Figure 7 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown.

[0027] Figure 8 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown.

[0028] Fig. 9 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown.

[0029] Fig.10 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application. The features and exemplary embodiments of various aspects of the present application will be described in detail below.

[0031] Figure 1 The figure shows a top view of the arrangement of signal lines of a display panel. Figure 2 Shown Figure 1 Cross-sectional view of the display panel along CC. Figure 3 The figure shows a cross-sectional view of a display panel along CC when the lower frame is bent. The direction indicated by arrow X is the first direction, also the longitudinal direction, and the direction indicated by arrow Y is the second direction, also the transverse direction. The first direction X and the second direction Y are perpendicular to each other and will not be emphasized separately in the following.

[0032] like Figures 1 to 3 The display panel 100 is used for display module. The display panel 100 includes a substrate 10, and the substrate 10 includes a display area AA and a non-display area NN. The non-display area NN at least partially surrounds the display area AA. The display area AA is the area that can be displayed after the display screen is formed, that is, the display interface. The non-display area NN is used to bind and connect electronic devices 40 such as driving chips and flexible circuit boards, and is located at the non-display interface position in the display screen. The set display area AA and non-display area NN can be designed accordingly according to the specific display requirements of the designed display screen.

[0033] For example, in a display panel with a display screen surrounded by frames on all sides, the non-display area NN surrounds the display area AA, and when curved screens are provided on both sides of the display screen without side frames, the non-display area NN is located on the upper and lower sides of the display area or on one side of the display area AA, and the specific arrangement of the display area AA and the non-display area NN is not specifically limited. The display panel 100 is described in detail below by taking the non-display area NN surrounded by the display area AA as an example.

[0034] It is understandable that the display panel 100 may be an active matrix organic light-emitting diode (AMOLED) display panel, without specific limitation.

[0035] Exemplarily, the substrate 10 is a flexible substrate, and the non-display area NN includes a bending area NN1, and the bending area NN1 is located on at least one side of the display area AA. Taking the non-display area NN forming the lower frame as an example, along the first direction X, the non-display area NN is located on one side of the display area AA, and the non-display area NN is provided with a first part NN2, a bending area NN1, and a second part NN3 arranged in sequence along the first direction X. After bending along the bending area NN1, the non-display area NN located between the bending area NN1 and the display area AA serves as the lower frame (the first part NN2) as part of the lower frame, and the non-display area NN located on the other side of the bending area NN1 (the second part NN3) is hidden to the back of the substrate 10 after bending.

[0036] The flexible substrate is provided with pixel electrodes for realizing display functions in an array in the display area AA, and a device area is provided in the second part NN3 of the non-display area NN, and the device area is used for binding and connecting electronic devices 40, and the electronic devices 40 may include electronic components such as chips. The pixel electrodes and the electronic devices 40 may be connected by signal lines so that the pixel electrodes can be powered on and emit light.

[0037] For example, the signal line may include a plurality of first connection lines electrically connecting the pixel electrodes arranged horizontally, a plurality of second connection lines 30 electrically connecting the pixel electrodes arranged along the second direction Y, and a plurality of leads electrically connecting the plurality of first connection lines, the plurality of second connection lines 30 and the electronic device 40, and the plurality of leads are arranged in a fan-shaped array in the non-display area NN between the display area AA and the device area. It is understandable that for ease of understanding, Figure 1 Only an exemplary structure in which a plurality of second connection lines 30 in the display area AA are connected to a plurality of lead lines is shown. For the sake of convenience, the plurality of lead lines are referred to as signal lines 20, which pass through the first portion NN2, the bending area NN1 and the second portion NN3 to electrically connect the pixel electrode and the electronic device 40, and will not be emphasized separately in the following.

[0038] It can be understood that a support layer 50 is provided on the back side of the substrate 10, and the support layer 50 at least exposes the bending area NN1 so as to support the flexible substrate through the support layer 50, but will not affect the bending of the bending area NN1. The support layer 50 can be, for example, a steel plate covering the back side of the substrate 10, and the thickness of the steel plate can be adaptively adjusted according to demand without specific limitation.

[0039] It can be understood that the signal line 20 located in the non-display area NN may be covered with an insulating protection layer 60 , and the protection layer 60 can protect the covered signal line 20 .

[0040] like Figure 2 and Figure 3 When the bending area NN1 of the flexible substrate is bent, the portion of the signal line 20 located in the bending area NN1 will also be bent along with the bending of the bending area NN1. The lower frame includes the first portion NN2 and a portion of the bending area NN1. When the bending area NN1 is bent, it has a bending radius R. The smaller the bending radius R, the narrower the lower frame will be. However, if the bending radius R of the bending area NN1 is reduced, the stress on the signal line 20 during the bending process will increase, which will make the metal signal line 20 more likely to break.

[0041] In view of this, the embodiments of the present application provide a display panel, a display module and a display device to solve the problem that the signal line 20 is easily broken due to the narrowing of the lower frame.

[0042] Figure 4 The figure shows a cross-sectional view along CC when the lower frame of the display panel is bent in one embodiment of the present application. Figure 5 The present invention provides an embodiment of the present invention. Figure 4 A partial enlarged view of the display panel in the M area is shown. Figure 6 The present invention provides an embodiment of the present invention. Figure 5 FIG. 1 is a schematic diagram of a signal line located in a bending area of ​​a display panel. Figure 7 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown. Figure 8 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown. Fig. 9 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown. Fig.10 Another embodiment of the present application is shown. Figure 4 A partial enlarged view of the display panel in the M area is shown.

[0043] It is understandable that for ease of observation and explanation, Figures 4 to 10 The width of the lower border after the middle bend is greater than Figure 3 In the actual processing, the width of the lower border in this application can be Figure 3 The width of the lower border is made narrower to narrow the lower border, without specific limitation.

[0044] like Figures 4 to 6An embodiment of the present application provides a display panel, wherein the display panel 100 includes a substrate 10, the substrate 10 is a flexible substrate, a signal line 20 is arranged in an array on the front surface of the flexible substrate, and the material of at least part of the signal line 20 in the bending area NN1 includes a conductive polymer material. By replacing at least part of the metal wires at the bending position of the signal line 20 with a conductive wire made of a conductive polymer material, the conductive wire made of the conductive polymer material has a high ductility when bent without affecting the conductive performance of the signal line 20, thereby reducing the risk of the signal line 20 being easily broken when bent, thereby avoiding the display abnormality of the display panel 100.

[0045] It is understood that the conductive polymer material includes a matrix and a conductive filler, the matrix includes at least one of polyethylene, polypropylene, polystyrene, epoxy resin, and phenolic resin, and the conductive filler includes at least one of carbon black, carbon nanotubes, graphene, metals and metal oxides, iodine, arsenic pentafluoride, antimony hexafluoride, and silver perchlorate, without specific limitation. It should be emphasized that the method of preparing the matrix and the conductive filler into a conductive polymer material can refer to the current method of preparing conductive polymer materials, and will not be repeated.

[0046] In some embodiments, the bending area NN1 includes a bending segment 21, and the bending segment 21 includes a first sub-segment 211 having a first bending curvature, the first bending curvature is greater than or equal to the bending curvature of any bending position in the bending segment 21, and the material of the first sub-segment 211 is configured as a conductive polymer material. The material of the sub-segment with the maximum bending curvature in the bending segment 21 is replaced from a conductive metal to a conductive polymer material, so that when the bending area NN1 of the display panel 100 is bent, if the lower frame is narrowed to reduce the bending radius R of the bending area NN1, the first sub-segment 211 has a larger first bending curvature than before, and the first sub-segment 211 uses its own higher ductility, so that the greater stress borne by the bending segment 21 when the display panel 100 is bent can be relieved by the first sub-segment 211, thereby avoiding the risk of the bending segment 21 being easily broken.

[0047] Specifically, the bending segment 21 further includes a second subsegment 212 and a third subsegment 213, the second subsegment 212 is connected to a side of the first subsegment 211 close to the display area AA, and the third subsegment 213 is connected to a side of the first subsegment 211 away from the second subsegment 212. That is, along the extension direction of the signal line 20, the second subsegment 212, the first subsegment 211 and the third subsegment 213 are sequentially connected, the second subsegment 212 can be used to connect the components of the display area AA, and the third subsegment 213 can be used to connect the devices of the device area.

[0048] After the bending area NN1 of the display panel 100 is bent, along the thickness direction of the display panel 100, the second sub-segment 212 and the third sub-segment 213 are respectively arranged on both sides of the first sub-segment 211, and the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 form a bending arc. When viewed along the first direction X, the first sub-segment 211 is located in the arc top area of ​​the bending arc. When the bending area NN1 is bent, since the flexible substrate, the support layer 50 and the protective layer 60 are bent along with the bending segment 21, the stress will be more concentrated in the arc top area of ​​the bending arc. Therefore, at least the material of the first sub-segment 211 located in the arc top area is replaced from a conductive metal to a conductive polymer material, so that the arc top area that is most prone to bending and fracture has a higher ductility, thereby reducing the risk of fracture.

[0049] Optionally, the second sub-segment 212 and the third sub-segment 213 can be set to the same conductive metal wire structure, and the bending arc formed by the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 can be a circular arc, that is, the bending curvature of the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 is the same. When the lower frame is narrowed, the bending radius of the circular arc is smaller than the bending radius before narrowing. As the bending radius decreases, the material of the first sub-segment 211 that is subjected to the greatest stress is set to a conductive polymer material, and the stress is relieved by the high ductility of the first sub-segment 211, thereby avoiding the problem of the bending segment 21 being easy to break. In addition, when only the material of the first sub-segment 211 is replaced from a conductive metal to a conductive polymer material, while the second sub-segment 212 and the third sub-segment 213 still use metal materials, it is possible to avoid problems such as excessive resistance and increased chip power consumption caused by excessive use of the signal line 20 of the conductive polymer material.

[0050] In some optional embodiments, one of the second subsegment 212 and the third subsegment 213 is set to a conductive metal wire, and the other is set to a conductive polymer material. The bending arc formed by the second subsegment 212, the first subsegment 211 and the third subsegment 213 can be an asymmetric arc. The first subsegment 211 has the largest bending curvature and can also be a circular arc, so that the bending curvatures of each part are the same. In addition to setting the first subsegment 211 located in the arc top area with the largest stress to a conductive polymer material, the signal line 20 of the other parts of the bending segment 21 can be replaced with a conductive polymer material, so that the ductility of the bending segment 21 is better. When the bending radius of the bending area NN1 is reduced, the bending performance of the bending segment 21 is better guaranteed, and the risk of breakage of the signal line 20 is further reduced. At the same time, the display effect will not be affected by problems such as excessive resistance and excessive chip power consumption.

[0051] In some optional embodiments, such as Figure 7, the second sub-segment 212 and the third sub-segment 213 can be configured as a conductive polymer material together with the first sub-segment 211, that is, the entire bending section 21 of the signal line 20 is a conductive line made of a conductive polymer material. This matching structure is conducive to making the bending radius of the bending area NN1 smaller, thereby making the lower frame narrower without causing the bending section 21 to break. It should be emphasized that this matching structure can be used in situations where the power consumption of resistors and chips is not high.

[0052] It can be understood that the length of the first sub-segment 211 located in the arc top area can be adaptively adjusted according to actual resistance, chip power consumption and other requirements, and the bending curvatures of the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 can be adaptively adjusted according to the actual size requirements of the lower frame without specific limitation.

[0053] In some embodiments, Figure 6 When the second sub-segment 212 and the third sub-segment 213 are both set as conductive metal wires, the bending arc formed by the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 is an elliptical arc structure, and the second sub-segment 212 and the third sub-segment 213 are configured as an arc structure with a second bending curvature, and the second bending curvature is smaller than the first bending curvature. That is, when the bending zone NN1 is bent, the first sub-segment 211 has the smallest first bending radius R1, the second sub-segment 212 and the third sub-segment 213 have the same second bending radius R2, the first bending radius R1 is smaller than the bending radius R when the bending zone NN1 is bent to form a circular arc, and the second bending radius R2 is larger than the bending radius R when the circular arc is formed, thereby maximizing the second bending radius R2 of the second sub-segment 212 and the third sub-segment 213 of the metal wire portion, so that when the lower frame is narrowed, the stress is relieved through the first sub-segment 211 with the first bending radius R1, so that the second bending radius R2 of the second sub-segment 212 and the third sub-segment 213 will not be reduced, thereby avoiding the second sub-segment 212 and the third sub-segment 213 from breaking, thereby further avoiding the problem of easy breaking of the bending segment 21.

[0054] It can be understood that the bending arc formed by the second sub-segment 212, the first sub-segment 211 and the third sub-segment 213 can also form other shapes, which are not specifically limited.

[0055] In some embodiments, Figure 8The signal line 20 also includes a first connecting segment 22 and a second connecting segment 23 located in the non-display area NN, and the first connecting segment 22 and the second connecting segment 23 are respectively connected to the two ends of the bending segment 21. The first connecting segment 22 is connected to the side of the second sub-segment 212 away from the first sub-segment 211; the second connecting segment 23 is connected to the side of the third sub-segment 213 away from the first sub-segment 211; wherein, at least part of the material of the first connecting segment 22 and the second connecting segment 23 includes a conductive polymer material. That is, except for at least part of the material of the bend located in the bending area NN1 being replaced by a conductive metal with a conductive polymer material, at least part of the material of the first connecting segment 22 and the second connecting segment 23 connecting the bending segment 21 can be replaced by a conductive polymer material from a conductive metal, which can reduce the stress of the bending in the bending area NN1, thereby further avoiding the problem of the signal line 20 being easily broken.

[0056] Optionally, the lengths of the first connecting segment 22 and the second connecting segment 23 are smaller than the lengths of the second sub-segment 212 and the third sub-segment 213 . The specific lengths of the first connecting segment 22 and the second connecting segment 23 can be adaptively adjusted according to actual needs and are not specifically limited.

[0057] It can be understood that the support layer 50 disposed on the back of the flexible substrate may specifically include a first support segment 51 and a second support segment 52, wherein the first support segment 51 is located in the display area AA and a portion of the non-display area NN; the second support segment 52 is located in a portion of the non-display area NN; wherein, in the orthographic projection direction of the signal line 20 to the support layer 50, the first support segment 51 overlaps with at least a portion of the first connecting segment 22, and the second support segment 52 overlaps with at least a portion of the second connecting segment 23. While the first connecting segment 22 and the second connecting segment 23 can provide a stress reduction effect on the bending of the bending segment 21, the first support segment 51 and the second support segment 52 can support the first connecting segment 22 and the second connecting segment 23 to prevent the first connecting segment 22 and the second connecting segment 23 from bending.

[0058] In some embodiments, Figure 4 and Figure 7 The protective layer 60 may be configured to cover the entire bending section 21, or the protective layer 60 may be configured to cover at least a portion of the bending section 21 in the signal line 20. Specifically, as Fig. 9 The protective layer 60 has a hollow area, and the hollow area exposes the first sub-segment 211, so that when the bending area NN1 is bent, the hollow area of ​​the protective layer 60 makes it easier for the first sub-segment 211 to be bent into the maximum first bending curvature, which is conducive to bending the bending segment 21 into an ellipse, so as to maximize the second bending radius R2 of the second sub-segment 212 and the third sub-segment 213, and further prevent the signal line 20 from breaking. In other examples, such as Fig.10The hollow area of ​​the protective layer 60 can expose the second subsegment 212 and the third subsegment 213 on the basis of exposing the first subsegment 211, which is conducive to the bending of the second subsegment 212 and the third subsegment 213 which are set to be conductive polymer materials.

[0059] It can be understood that the structure of the protective layer 60 can be adaptively adjusted according to the materials of the first sub-segment 211, the second sub-segment 212 and the third sub-segment 213 and the required bending curvature and bending shape, and the thickness of the protective layer 60 can be adaptively adjusted according to needs without specific limitation.

[0060] The embodiment of the present application further provides a display module, which includes a display panel 100 and a cover plate covering the front side of the display panel 100. The display panel 100 can refer to the description of the above embodiments and will not be described in detail.

[0061] An embodiment of the present application also provides a display device, including the display module described above. The display device can be a VR device, an AR device or other wearable device, a vehicle-mounted device or a computer, a tablet computer, etc., without specific limitation.

[0062] It should be noted that in the drawings of the present application document, the sizes of layers and regions may be exaggerated for clarity of illustration. It is also understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it is understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it may be the only layer between the two layers or two elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0063] In addition, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0064] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: include: A substrate, comprising a display area and a non-display area surrounding at least a portion of the display area, wherein the non-display area comprises a bending area; A signal line arranged in the non-display area, the signal line being configured to electrically connect elements in the display area; Wherein, the material of at least part of the signal lines in the bending area includes a conductive polymer material.

2. The display panel according to claim 1, characterized in that: The bending zone includes a bending section, and the bending section includes: A first sub-segment has a first bending curvature, the first bending curvature is greater than or equal to the bending curvature of any bending position in the bending segment, and the material of the first sub-segment is configured as the conductive polymer material; Preferably, the conductive polymer material includes a matrix and a conductive filler, the matrix includes at least one of polyethylene, polypropylene, polystyrene, epoxy resin, and phenolic resin, and the conductive filler includes at least one of carbon black, carbon nanotubes, graphene, metals and metal oxides, iodine, arsenic pentafluoride, antimony hexafluoride, and silver perchlorate.

3. The display panel according to claim 2, characterized in that: The bending section also includes: a second sub-segment connected to a side of the first sub-segment close to the display area; a third sub-segment, connected to a side of the first sub-segment away from the second sub-segment; Wherein, at least one of the second sub-segment and the third sub-segment is configured as a conductive metal wire.

4. The display panel according to claim 3, characterized in that: The second sub-segment and the third sub-segment are both the conductive metal wires, and the bent segment is configured as an elliptical arc structure; Preferably, the second subsegment and the third subsegment are configured as an arc-shaped structure with a second bending curvature, and the second bending curvature is smaller than the first bending curvature.

5. The display panel according to claim 3, characterized in that: The signal line also includes: a first connecting section, connected to a side of the second subsection away from the first subsection; a second connecting section connected to a side of the third subsection away from the first subsection; Wherein, at least part of the material of the first connecting section and the second connecting section includes a conductive polymer material.

6. The display panel according to claim 5, characterized in that: It also includes a support layer located on a side of the substrate away from the signal line, and the support layer includes: A first supporting section, located in the display area and part of the non-display area; A second supporting section is located in part of the non-display area; Wherein, in the orthographic projection direction of the signal line onto the supporting layer, the first supporting segment overlaps with at least a portion of the first connecting segment, and the second supporting segment overlaps with at least a portion of the second connecting segment.

7. The display panel according to any one of claims 2 to 6, characterized in that: Also includes: The protection layer is located on a side of the signal line away from the substrate, and the protection layer is configured to cover at least a portion of the bending section of the signal line.

8. The display panel according to claim 7, characterized in that: The protection layer has a hollow area, and the hollow area exposes the first sub-segment.

9. A display module, characterized in that: A display panel comprising any one of claims 1 to 8.

10. A display device, characterized in that: Comprising the display module described in claim 9.

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