Flexible support, flexible display module and electronic display device

Abstract

The application provides a flexible support, a flexible display module and an electronic display device. The flexible support has a first surface and a second surface opposite to each other, and is used for being attached to a flexible display panel; the flexible support comprises a main body part, a bending part and an edge part arranged around the main body part; the resistance between the second surface and the first surface of the bending part is smaller than the resistance between the second surface and the first surface of the main body part; and / or the resistance between the second surface and the first surface of the edge part is smaller than the resistance between the second surface and the first surface of the main body part. In this way, the electric field of the two surfaces of the flexible support can be conducted, and in the electric field test, the electric charge of the first surface of the flexible support can be conducted away through the second surface, so that the risk of the electric charge gathering to the flexible display panel is greatly reduced, and the conditions of the hole area shining and / or the bending area Mura of the flexible display panel are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a flexible support, a flexible display module and an electronic display device. BACKGROUND

[0002] The flexible display screen is more and more popular due to its advantages of foldable, curved and stretchable. At present, the flexible display screen usually comprises a flexible support and a flexible display panel; the flexible display panel is arranged on the flexible support to support the flexible display panel by the flexible support. However, when the existing flexible display module is tested by electric field, the electric charges are gathered in the display panel, which causes the problems of bright hole area of the flexible display panel, uneven display brightness (Mura) of the bending area and the like. SUMMARY

[0003] The flexible support, the flexible display module and the electronic display device provided by the present application solve the problems of bright hole area of the flexible display panel, uneven display brightness (Mura) of the bending area and the like when the existing flexible display module is tested by electric field.

[0004] To solve the above technical problems, one technical solution adopted by the present application is to provide a flexible support for supporting a flexible display panel, the flexible support having opposite first and second surfaces; the first surface is used to be attached to the flexible display panel; the flexible support comprises a main body portion, a bending portion and an edge portion arranged around the main body portion; the electric resistance between the second surface of the bending portion and the first surface is smaller than the electric resistance between the second surface of the main body portion and the first surface; and / or the electric resistance between the second surface of the edge portion and the first surface is smaller than the electric resistance between the second surface of the main body portion and the first surface.

[0005] In one embodiment of the present application, the flexible support comprises a medium layer and a conductive material dispersed in the medium layer; the medium layer comprises the first surface and the second surface;

[0006] Wherein, along the thickness direction of the flexible support, the distance between the conductive material and the first surface of the medium layer is 1-3um; the distance between the conductive material and the second surface of the bending portion and / or the second surface of the edge portion is also 1-3um;

[0007] Preferably, the roughness of the second surface of the main body portion is greater than the roughness of the first surface of the medium layer; the roughness of the second surface of the bending portion and / or the edge portion is the same as or close to the roughness of the first surface of the medium layer;

[0008] Preferably, the roughness of the first surface of the medium layer is 0.1um-0.3um.

[0009] Preferably, the conductive material is dispersed in the edge portion and / or the bending portion of the flexible support.

[0010] In an embodiment of the present application, the flexible support comprises a medium layer and a conductive material dispersed in the medium layer; the conductive material is at least dispersed in the edge portion of the flexible support; the second surface of the edge portion is provided with a groove; the groove exposes the conductive material.

[0011] In an embodiment of the present application, the groove is arranged around one circumference of the main body portion;

[0012] Preferably, the edge of the cross section of the flexible support along the thickness direction thereof is stepped.

[0013] Preferably, the material of the medium layer comprises epoxy resin; and the conductive material comprises carbon fiber.

[0014] In an embodiment of the present application, further comprising:

[0015] A conductive medium is filled in the groove, and a side surface of the conductive medium away from the first surface of the flexible support is flush with the second surface of the flexible support.

[0016] In an embodiment of the present application, along the thickness direction of the flexible support, the distance between the conductive material and the first surface of the medium layer is 1-3um; and the distance between the conductive material in the bending portion and the second surface of the bending portion is also 1-3um.

[0017] Preferably, the roughness of the second surface of the bending portion is the same as or close to the roughness of the first surface of the medium layer.

[0018] Preferably, the bending portion is in a grid shape.

[0019] In an embodiment of the present application, the width of the edge portion is 5-10mm.

[0020] In an embodiment of the present application, the depth of the groove is less than the thickness of the flexible support, and the depth of the groove is 1-2um.

[0021] To solve the above technical problems, another technical solution adopted by the present application is to provide a flexible display module, which comprises: the flexible support as described above; and a flexible display panel arranged on the flexible support and having a bending area; the orthographic projection of the bending area falls on the bending portion of the flexible support.

[0022] To solve the above-mentioned technical problems, another technical solution adopted in this application is to provide an electronic display device, which includes the flexible display module mentioned above.

[0023] The beneficial effects of this application's embodiments are as follows: Unlike the prior art, this flexible support member is used to support a flexible display panel. The flexible support member has a first surface and a second surface facing away from each other. The first surface is used to adhere to the flexible display panel. The flexible support member includes a main body, a bent portion, and an edge portion surrounding the main body. The resistance between the second surface of the bent portion and the first surface is less than the resistance between the second surface of the main body and the first surface; and / or, the resistance between the second surface of the edge portion and the first surface is less than the resistance between the second surface of the main body and the first surface. Thus, the electric field between the two surfaces of the flexible support member can be conducted at the bent portion and / or the edge portion. When this flexible support member supports the flexible display panel and an electric field test is performed on the flexible display module formed by the two, the charge on the first surface of the flexible support member can be conducted away through its second surface, greatly reducing the risk of charge accumulation from the flexible support member to the flexible display panel, and improving the situation of bright spots in the hole area or uneven brightness (mura) in the bent area of ​​the flexible display panel. Attached Figure Description

[0024] Figure 1 A simplified structural diagram of a flexible display module provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of the first surface of a flexible support member provided in an embodiment of this application;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure of the second surface of the flexible support shown;

[0027] Figure 4 for Figure 3 The AA-direction cross-sectional view of the flexible support member at position M1 shown;

[0028] Figure 5 for Figure 2 Another structural schematic diagram of the second surface of the flexible support shown;

[0029] Figure 6 for Figure 5 The AA-direction cross-sectional view of the flexible support member at position M2 is shown.

[0030] Figure 7 for Figure 2 Another structural schematic diagram of the second surface of the flexible support shown;

[0031] Figure 8 for Figure 7A-A cross-sectional view of the M3 position of the flexible support shown;

[0032] Figure 9 A structural diagram of an electronic display device provided for an embodiment of the present application.

[0033] Reference Signs List

[0034] 10 - flexible display module; 1 - flexible support; 1a - main body part; 1b - bending part; 1c - edge part; 11 - medium layer; 12 - conductive material; 13 - groove; 14 - conductive medium; 2 - flexible display panel. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0036] The terms "first", "second", "third" in the present application are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise explicitly and specifically limited. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but can optionally include steps or units not listed, or can optionally include other steps or units inherent to the process, method, product or device.

[0037] In this document, reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As used in this document, the term "exemplary" means serving as an example, instance, or illustration. At least one embodiment of the application is contemplated as an example.

[0038] In the related art, in order to improve the weight problem of the folding screen, the carbon fiber is used instead of the metal such as stainless steel SUS or titanium alloy for the folding screen back plate support due to its light weight, high strength and other characteristics, and the folding screen back plate support is designed as a hollow pattern to meet the bending. However, the present inventors have found that, since the carbon fiber support is a product of carbon fiber filaments and epoxy resin, the surface of the support is wrapped by the epoxy resin, so that the surface is not conductive. When the folding screen is tested by an electric field, the upper and lower electric fields of the support cannot be conducted, and the charges are gathered in the flexible display panel, such as OLED device, to cause the problems of camera hole area brightening and bending area Mura of the flexible display panel.

[0039] Therefore, the present application provides a new flexible support, the upper and lower surfaces of which can be conducted by an electric field, so that the risk of charge gathering from the flexible support to the flexible display panel is greatly reduced when the flexible display module is tested by an electric field, and the problems of hole area brightening or bending area display unevenness (Mura) of the flexible display panel are improved.

[0040] The present application will be described in detail below in conjunction with the drawings and embodiments.

[0041] Please refer to Figure 1 , Figure 1 The structural diagram of the flexible display module provided by an embodiment of the present application is shown. In the embodiment, a flexible display module 10 is provided, which includes a flexible support 1 and a flexible display panel 2. The flexible display panel 2 has a display surface and a non-display surface, and the display surface of the flexible display panel 2 is used for displaying a picture. The non-display surface of the flexible display panel 2 faces the flexible support 1 and is arranged on the flexible support 1.

[0042] The flexible display panel 2 has a bending area, and the flexible display panel 2 can be folded at the position of the bending area. In some embodiments, the flexible display panel 2 includes a back plane film (BPF), an insulating layer (PI), a thin-film transistor (TFT), a display screen, a polarizer (POL), a cover plate, and a glue material for bonding and fixing the cover plate and the polarizer, which are sequentially stacked. The back plane film faces the flexible support 1.

[0043] The flexible support 1 is used for supporting the flexible display panel 2. The specific structure and function of the flexible support 1 can be referred to the relevant description below.

[0044] Please refer to Figures 2 to 4 , Figure 2 The structural diagram of the first surface of the flexible support provided by an embodiment of the present application is shown. Figure 3 For Figure 2A structure diagram of a second surface of the flexible support shown; Figure 4 For Figure 3 An A-A cross-sectional view of M1 position of the flexible support shown. In this embodiment, a flexible support 1 is provided, which has a first surface and a second surface opposite to each other; the first surface is used to be attached to a flexible display panel 2 to support the flexible display panel 2. Wherein, the A-A direction involved in the present application is the thickness direction of the flexible support 1.

[0045] As Figure 3 As shown, the flexible support 1 includes a main body part 1a, a bending part 1b and an edge part 1c arranged around the main body part 1a. The bending part 1b is arranged corresponding to the bending area of the flexible display panel 2, and the bending part 1b can be in a grid shape to reduce the bending stress.

[0046] Wherein, the main body part 1a includes a first part and a second part; the first part and the second part respectively include a first side wall, a second side wall, a third side wall and a fourth side wall; the first side wall of the first part and the first side wall of the second part are respectively connected to two sides of the bending part 1b. The edge part 1c surrounds the second side wall, the third side wall and the fourth side wall of the first part and is directly connected with these side walls; and the edge part 1c also surrounds the second side wall, the third side wall and the fourth side wall of the second part and is directly connected with these side walls. Wherein, the width w of the edge part 1c is 5-10mm; for example, w is 5mm, 6mm, 7mm, 8mm, 9mm or 10mm. In other words, the flexible support 1 includes a bearing part and the bending part 1b, the main body part 1a and the edge part 1c form the bearing part, and the edge part 1c is the circumferential edge of the bearing part.

[0047] Wherein, the resistance between the second surface and the first surface of the bending part 1b is smaller than the resistance between the first surface and the second surface of the main body part 1a; and / or the resistance between the second surface of the edge part 1c and the first surface of the edge part 1c is also smaller than the resistance between the first surface and the second surface of the main body part 1a.

[0048] Thus, when the resistance between the second surface and the first surface of the bending portion 1b is less than the resistance between the first surface and the second surface of the main body portion 1a, the first and second surfaces of the flexible support member 1 can achieve electric field conduction through the first and second surfaces of the bending portion 1b. Therefore, when the flexible display module 10 is tested for electric field, the charge on the first surface of the flexible support member 1 can be conducted away through the second surface of the bending portion 1b, which greatly reduces the risk of charge accumulating from the flexible support member 1 to the flexible display panel 2, and improves the uneven brightness (Mura) and / or brightening of the hole area in the bending area of ​​the flexible display panel 2. When the resistance between the first and second surfaces of the edge portion 1c is also less than the resistance between the first and second surfaces of the main body portion 1a, the first and second surfaces of the flexible support member 1 can achieve electric field conduction through the first and second surfaces of the edge portion 1c. Thus, when the flexible display module 10 is tested for electric field, the charge on the first surface of the flexible support member 1 can be conducted away through the edge portion 1c, which greatly reduces the risk of charge accumulating from the flexible support member 1 to the flexible display panel 2, and improves the uneven brightness (Mura) in the bending area and / or the brightening of the hole area in the flexible display panel 2.

[0049] In one embodiment, such as Figure 4 As shown, the flexible support 1 may include a dielectric layer 11 and a conductive material 12 dispersed within the dielectric layer 11. The upper and lower surfaces of the dielectric layer 11 form a first surface and a second surface of the flexible support 1. The dielectric layer 11 may be epoxy resin. The conductive material 12 may be a material with low density, light weight, and high strength; for example, the conductive material 12 may be carbon fiber. In this way, the weight of the flexible support 1 can be reduced. Optionally, the conductive material 12 may be dispersed at least at the edge portion 1c and / or the bent portion 1b of the flexible support 1.

[0050] Experiments have shown that, along the thickness direction of the flexible support 1, when the distance between the conductive material 12 and the outer surface of the dielectric layer 11 is 1-3 μm, the resistance between them is relatively small, approximately 1 kiloohm, indicating relatively good conductivity. However, when the distance between the conductive material 12 and the outer surface of the dielectric layer 11 is 4-6 μm, the resistance between them is relatively large, approximately 10 ohms. 8 At this point, the conductivity is weak, and the charge is difficult to conduct away. Therefore, in one embodiment, along the thickness direction of the flexible support 1, the first distance h1 between the conductive material 12 and the first surface of the dielectric layer 11 is 1-3 μm; for example, h1 can be 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm. The second distance h2 between the conductive material 12 and the second surface of the bent portion 1b, and / or the third distance h3 between the conductive material 12 and the second surface of the edge portion 1c, is also 1-3 μm; for example, 1 μm, 1.5 μm, 2 μm, 2.5 μm, or 3 μm.

[0051] When the second distance h2 between the conductive material 12 and the second surface of the bending part 1b is 1-3 um, the resistance between the first surface and the second surface of the bending part 1b is small, the bending part 1b can realize charge conduction to lead away the charge; when the third distance h3 between the conductive material 12 and the second surface of the edge part 1c is 1-3 um, the resistance between the second surface and the first surface of the edge part 1c is small, the edge part 1c can realize charge conduction to lead away the charge, thereby improving the problems of brightening of the hole area and Mura of the bending area.

[0052] In a specific embodiment, the third distance h3 between the conductive material 12 and the entire second surface of the edge part 1c is 1-3 um.

[0053] In this embodiment, the roughness of the first surface of the medium layer 11 is smaller than the roughness of the second surface of the main body part 1a. The first surface with smaller roughness is beneficial to the flat and close fit between the first surface of the medium layer 11 and the flexible display panel 2; the second surface with larger roughness is convenient for the assembly of the flexible support 1 and other components. Specifically, the roughness of the second surface of the bending part 1b and / or the edge part 1c is the same as or close to the roughness of the first surface of the medium layer 11. Close roughness can mean that the roughness difference is within a preset range, such as the roughness difference is not greater than 0.01.

[0054] In one specific embodiment, the roughness of the first surface of the medium layer 11 is 0.1 um-0.3 um; for example, 0.1 um, 0.15 um, 0.2 um, 0.25 um or 0.3 um.

[0055] The area of the second surface of the edge part 1c and / or the bending part 1b is smaller than the area of the second surface of the main body part 1a. In this way, the flexible support 1 can realize conduction by using the edge part 1c and / or the bending part 1b; and the assembly of the flexible display module 10 and other components can be realized by using the second surface of the main body part 1a with large area and high roughness.

[0056] In one specific embodiment, the ratio M of the area of the second surface of the edge part 1c and / or the bending part 1b to the area of the second surface of the main body part 1a can be 0.06-0.2. For example, M can be 0.06, 0.08, 0.1, 0.12, 0.14, 0.16, 0.18 or 0.2, and the like.

[0057] In another embodiment, referring to Figure 5 and Figure 6 , Figure 5 is another structural schematic view of the second surface of the flexible support shown in Figure 2 Figure 6 is another structural schematic view of the second surface of the flexible support shown in Figure 5 ​A-A direction cross-sectional view of M2 position of the shown flexible support; another flexible support 1 is provided, which is different from the above-mentioned 2 and Figure 3 The flexible support 1 provided by the corresponding embodiment is different in that: the second surface of the edge part 1c is provided with a groove 13; the groove 13 exposes the conductive material 12.

[0058] In this way, the first surface of the flexible support 1 and the conductive material 12 exposed by the groove 13 can realize electric field conduction, so that when the flexible display module 10 is subjected to electric field test, the electric charge on the first surface of the flexible support 1 can be conducted away through the conductive material 12 exposed by the groove 13, greatly reducing the risk of electric charge gathering from the flexible support 1 to the flexible display panel 2, and improving the situation of hole area brightening and / or display brightness unevenness (Mura) in the bending area of the flexible display panel 2.

[0059] Among them, the groove 13 can be arranged around one circumference of the body part 1a. As shown in Figure 6 As shown, the depth of the groove 13 is less than the thickness of the flexible support 1, and the depth of the groove 13 is 1-2um; for example, the depth of the groove 13 can be 1um, 1.5um or 2um. Specifically, the ratio of the depth of the groove 13 to the thickness of the flexible support 1 is less than 0.5; to ensure the support strength of the flexible display panel 2 at the edge of the flexible support 1.

[0060] In some specific embodiments, in combination with Figure 6 , the edge of the cross section of the flexible support 1 along its thickness direction is in a stepped shape.

[0061] The present inventors have found that if a groove 13 is selected to be opened on the second surface of the bending part 1b to expose the conductive material 12 to realize the electric field conduction of the upper and lower surfaces of the bending part 1b, since the bending part 1b is already a grid-like structure after patterning, if the groove is continued to be dug on the bending part 1b to expose the conductive material 12, it will seriously affect the support strength of the bending part 1b, and even there is a risk of breaking of the bending part 1b. Therefore, in this embodiment, it is preferred to control the second distance h2 between the conductive material 12 and the second surface of the bending part 1b to realize the electric field conduction of the upper and lower surfaces of the bending part 1b; the specific scheme is as described above Figures 2 to 4 The related scheme in the corresponding embodiment. Herein will not be repeated.

[0062] In yet another embodiment, referring to Figure 7 and Figure 8 , Figure 7 is Figure 2 Another structure diagram of the second surface of the flexible support 1 shown; Figure 8 is Figure 7 A-A direction cross-sectional view of M3 position of the flexible support 1 shown; another flexible support 1 is provided, which is different from the above-mentionedFigure 5 and Figure 6 The flexible support 1 provided by the embodiment corresponding to the embodiment is different in that: the flexible support 1 further comprises a conductive medium 14, the conductive medium 14 is filled in the groove 13, and a side surface of the conductive medium 14 away from the first surface of the flexible support 1 is flush with the second surface of the flexible support 1. In this way, on the one hand, the conductive medium 14 plays a role of conducting electricity to realize the electric field conduction of the first surface and the second surface of the flexible support 1; on the other hand, the conductive medium 14 can fill the groove 13 to make the surface of the flexible support 1 smooth, which is more conducive to bending and client-side assembly and the like.

[0063] The conductive medium 14 can be metal nickel, copper, silver or other conductive material 12.

[0064] The flexible support 1 provided by the embodiment is used for supporting a flexible display panel 2, and has opposite first and second surfaces; the first surface is used for being attached to the flexible display panel 2; the flexible support 1 comprises a main body part 1a, a bending part 1b and an edge part 1c arranged around the main body part 1a; the resistance between the second surface and the first surface of the bending part 1b is smaller than the resistance between the second surface and the first surface of the main body part 1a; and / or the resistance between the second surface and the first surface of the edge part 1c is smaller than the resistance between the second surface and the first surface of the main body part 1a. In this way, the electric field of the two surfaces of the flexible support 1 can be conducted at the positions of the bending part 1b and / or the edge part 1c. When the flexible support 1 is used for supporting the flexible display panel 2 and the structure formed by the two is subjected to electric field testing, the electric charge of the first surface of the flexible support 1 can be conducted away through the second surface, which greatly reduces the risk of the electric charge gathering from the flexible support 1 to the flexible display panel 2 and improves the situation of the hole area of the flexible display panel 2 shining or the display brightness of the bending area being uneven (Mura).

[0065] In one embodiment, referring to Figure 9 , Figure 9 The structure diagram of the electronic display device provided by the embodiment is shown. In the embodiment, an electronic display device is provided, which comprises the flexible display module 10 related to the above embodiments. The specific structure and function of the flexible display module 10 can be referred to the above related description, which will not be described here. The electronic display device can be a product or component with a display function such as a mobile phone, a tablet computer, a notebook computer and a television. The electronic display device further comprises a mainboard, a control circuit and the like, which have the same or similar structures as the related structures of the existing display device, and the specific structure can be referred to the prior art, which will not be described here.

[0066] The above merely describes the embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which is made by using the content of the present application specification and drawings, is also included in the patent protection scope of the present application.

Claims

1. A flexible support for supporting a flexible display panel, characterized in that, the flexible support has opposite first and second surfaces; the first surface is configured to be attached to the flexible display panel; the flexible support comprises a main body portion, a bending portion, and a peripheral portion surrounding the main body portion; wherein the electrical resistance between the second surface of the bending portion and the first surface is less than the electrical resistance between the second surface of the main body portion and the first surface; and / or the electrical resistance between the second surface of the peripheral portion and the first surface is less than the electrical resistance between the second surface of the main body portion and the first surface; the flexible support comprises a dielectric layer and a conductive material dispersed in the dielectric layer; the dielectric layer comprises the first and second surfaces; wherein the distance between the conductive material and the first surface of the dielectric layer along the thickness direction of the flexible support is 1-3 um; the distance between the conductive material and the second surface of the bending portion and / or the second surface of the peripheral portion is also 1-3 um; or the flexible support comprises a dielectric layer and a conductive material dispersed in the dielectric layer; the conductive material is dispersed at least in the peripheral portion of the flexible support; the second surface of the peripheral portion is provided with a groove; the groove exposes the conductive material.

2. The flexible support of claim 1, wherein, the roughness of the second surface of the main body portion is greater than the roughness of the first surface of the dielectric layer; the roughness of the second surface of the bending portion and / or the peripheral portion is the same as or close to the roughness of the first surface of the dielectric layer.

3. The flexible support of claim 2, wherein, the roughness of the first surface of the dielectric layer is 0.1 um-0.3 um.

4. The flexible support of claim 1, wherein, the conductive material is dispersed in the peripheral portion and / or the bending portion of the flexible support. 5.The flexible support of claim 1, characterized in that, the second surface of the peripheral portion is provided with a groove; the groove is arranged around the circumference of the main body portion.

6. The flexible support of claim 5, wherein, the edge of the cross section of the flexible support along the thickness direction thereof is stepped.

7. The flexible support of claim 5, wherein, the material of the dielectric layer comprises epoxy resin; the conductive material comprises carbon fiber.

8. The flexible support of claim 1, wherein, the second surface of the peripheral portion is provided with a groove; the flexible support further comprises: a conductive medium filled in the groove, and the side surface of the conductive medium away from the first surface of the flexible support is flush with the second surface of the flexible support. 9.The flexible support of claim 1, characterized in that, the second surface of the peripheral portion is provided with a groove; along the thickness direction of the flexible support, the distance between the conductive material and the first surface of the dielectric layer is 1-3 um; the distance between the conductive material in the bending portion and the second surface of the bending portion is also 1-3 um.

10. The flexible support of claim 9, wherein, the roughness of the second surface of the bending portion is the same as or close to the roughness of the first surface of the dielectric layer.

11. The flexible support of claim 9, wherein, the bending portion is in a grid shape. 12.The flexible support of claim 1, characterized in that, the width of the peripheral portion is 5-10 mm. 13.The flexible support of claim 1, characterized in that, The second surface of the edge portion is provided with a groove; the depth of the groove is less than the thickness of the flexible support, and the depth of the groove is 1-2 um.

14. A flexible display module, characterized in that, Comprising: The flexible support according to any one of claims 1-13; The flexible display panel is arranged on the flexible support and has a bending area; the orthographic projection of the bending area falls on the bending portion of the flexible support.

15. An electronic display device, characterized by The flexible display module according to claim 14.

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