CN116935743A - Supports, flexible screen components and foldable electronic devices - Google Patents

Abstract

The application provides a support piece, which is applied to folding electronic equipment, and comprises a carbon fiber resin plate, wherein the carbon fiber resin plate comprises a bendable region and support regions arranged at two sides of the bendable region, the mass content of carbon fibers in the bendable region is less than 50%, and/or the bendable region can be bent around a first direction, the first direction is perpendicular to the arrangement direction of the bendable region and the support regions and is parallel to the support regions, the extending direction of the carbon fibers in the bendable region is parallel to the first direction or has a first included angle, and the first included angle is smaller than or equal to 10 degrees; the bending modulus and bending stress of the carbon fiber resin plate in the bendable region can be reduced, the bending resistance of the carbon fiber resin plate and the supporting piece is improved, and the supporting piece is beneficial to use. The application also provides a flexible screen assembly and a folding electronic device.

Description

Supports, flexible screen components and foldable electronic devices

Technical field

This application belongs to the technical field of electronic products, specifically involving supports, flexible screen components and foldable electronic devices.

Background technique

Flexible screens have the advantages of being bendable and easy to carry, and are increasingly used in various electronic products. Currently, a metal support plate is installed under the flexible screen to support the flexible screen to ensure the use of the flexible screen. The metal support plate has high strength and strong support for the flexible screen. However, the metal support plate has poor flexibility and is prone to cracks or even breakage during the bending process, which affects the use of electronic products.

Contents of the invention

In view of this, the present application provides a support member, a flexible screen assembly and a foldable electronic device.

In a first aspect, the present application provides a support member. The support plate is used in foldable electronic equipment. The support member includes a carbon fiber resin plate. The carbon fiber resin plate includes a bendable area and is arranged on the bendable electronic device. The support areas on both sides of the bending area, the mass content of carbon fiber in the bendable area is less than 50%, and/or the bendable area can be bent around a first direction, wherein the first direction is vertical In the direction in which the bendable area and the support area are arranged and the first direction is parallel to the support area, the extending direction of the carbon fiber in the bendable area is parallel to the first direction or has a The first included angle is less than or equal to 10°.

In a second aspect, the application provides a flexible screen assembly, including the support member described in the first aspect and a flexible screen. The support member is used to support the flexible screen. The flexible screen has a bendable portion. The bendable portion is provided corresponding to the bendable area of the support member.

In a third aspect, this application provides a foldable electronic device, including the flexible screen assembly described in the second aspect.

In the support provided by this application, the mass content of carbon fibers in the bendable area of the carbon fiber resin plate is less than 50% and/or the extension direction of the carbon fiber is parallel to the first direction or has a first angle, which reduces the bendability of the carbon fiber resin plate. The bending modulus and bending stress of the folding area improve the bending resistance of the carbon fiber resin plate and the support; the flexible screen components and foldable electronic devices equipped with the support have good bending resistance and extend their service life.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be described below.

FIG. 1 is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application.

Figure 2 is a schematic structural diagram of a foldable electronic device provided by another embodiment of the present application.

Figure 3 is a schematic structural diagram of a foldable electronic device provided by another embodiment of the present application.

FIG. 4 is a schematic cross-sectional view of a flexible screen assembly in an unfolded state according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a flexible screen in an unfolded state according to an embodiment of the present application.

Figure 6 is a schematic cross-sectional view of Figure 5 in the A-A direction.

FIG. 7 is a schematic cross-sectional view of a flexible screen assembly in an unfolded state according to another embodiment of the present application.

Figure 8 is a schematic cross-sectional view of a support provided by an embodiment of the present application.

Figure 9 is a plan view of a support provided by an embodiment of the present application.

Figure 10 is a schematic cross-sectional view of a carbon fiber resin plate provided by an embodiment of the present application.

Figure 11 is a schematic diagram of the bending area of the carbon fiber resin plate provided by one embodiment of the present application.

Figure 12 is a schematic cross-sectional view of a support provided by another embodiment of the present application.

Figure 13 is a schematic cross-sectional view of a support provided by another embodiment of the present application.

Figure 14 is a schematic structural diagram of the bendable area of the carbon fiber resin plate provided by an embodiment of the present application. The opening shapes of the mesoporous structures in (a)-(d) in Figure 14 are circular, waist-circular, rectangular and diamond.

Figure 15 is a schematic cross-sectional view of the bendable area of the carbon fiber resin plate provided by an embodiment of the present application, in which the cross-sectional shapes of the mesoporous structures in (a)-(c) in Figure 15 are inverted V-shape, inverted U-shape and trapezoid, respectively. .

Figure 16 is a schematic structural diagram of a support member in a folded state according to an embodiment of the present application.

Figure 17 is a schematic structural diagram of a support member in a folded state according to another embodiment of the present application.

Figure 18 is a schematic structural diagram of a carbon fiber resin plate provided by an embodiment of the present application.

Figure 19 is a schematic cross-sectional view of a support provided by another embodiment of the present application.

Figure 20 is a schematic cross-sectional view of a support provided by another embodiment of the present application.

FIG. 21 is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application.

Label description:

Carbon fiber resin plate-10, bendable area-11, inner bending area-111, outer bending area-112, transition area-113, support area-12, hole structure-13, carbon fiber resin membrane-101, support membrane-20 , support part-100, flexible screen-200, bendable part-210, non-bendable part-220, base material-201, flexible display panel-202, polarizer-203, cover-204, heat sink-300 , Flexible screen component-401, Foldable shell component-402, RF circuit-410, Memory-420, Input unit-430, Display unit-440, Sensor-250, Audio circuit-460, WiFi module-470, Processor -480, power supply -490, foldable electronic equipment -400.

Detailed ways

The following are the preferred embodiments of the present application. It should be noted that those of ordinary skill in the art can also make several improvements and modifications without departing from the principles of the present application, and these improvements and modifications are also regarded as the present application. The scope of protection applied for.

The following disclosure provides many different embodiments or examples for implementing the various structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the application. Furthermore, this application may repeat reference numbers and/or reference letters in different examples, such repetition being for the purposes of simplicity and clarity and does not by itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Foldable electronic devices in this application include, but are not limited to, being configured to be connected via a wired line (such as via the public switched telephone network, digital subscriber line, digital cable, direct cable connection, and/or another data connection/network) and/or or a device that receives/transmits communication signals via a wireless interface (e.g., for a cellular network, a wireless local area network, a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal) . A communication terminal configured to communicate through a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal", "electronic device" and/or "electronic device". Examples of foldable electronic devices include, but are not limited to, satellite or cellular telephones; personal communications system terminals that may combine cellular radiotelephones with data processing, fax, and data communications capabilities; may include radiotelephones, pagers, Internet/Intranet access, PDAs with web browsers, planners, calendars, and/or global positioning system receivers; as well as conventional laptop and/or handheld receivers, game consoles, or other electronic devices including radiotelephone transceivers. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application.

It should be noted that the electronic devices in the embodiments of the present application are mainly aimed at foldable electronic devices, for example, electronic devices with flexible screen components, etc. Specifically, they may be, but are not limited to, foldable screen mobile phones. Specifically, foldable electronic devices can be bent and folded for portability, and can also be unfolded to present a larger display area to meet user needs.

Please refer to FIG. 1 , which is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application. The foldable electronic device 400 includes a flexible screen assembly 401 . The foldable electronic device 400 may be, but is not limited to, a mobile phone, a tablet computer, a game console, and other devices. In the embodiment of the present application, please refer to Figure 1. A foldable electronic device 400 includes a flexible screen assembly 401, a foldable housing assembly 402 and electronic components. The flexible screen assembly 401 and the foldable housing assembly 402 are connected and surrounded to form a container. The electronic components are placed in the accommodation space. Furthermore, the foldable electronic device 400 may also include a folding mechanism, and the folding structure is disposed in the accommodation space. The folding structure can drive the foldable case assembly 402 to bend, and when the foldable case assembly 402 is bent, the flexible screen assembly 401 is bent simultaneously. Specifically, the folding mechanism may be, but is not limited to, a hinge mechanism, a rotating shaft mechanism, an elastic mechanism, etc.

The foldable electronic device 400 can be divided into an inner folding screen device and an outer folding screen device according to the different bending directions of the flexible screen assembly 401 . Please refer to Figure 2, which is a schematic structural diagram of a foldable electronic device according to another embodiment of the present application. In the foldable electronic device 400, the flexible screen component 401 is bent inward, that is, the foldable housing component 402 is bent toward the flexible screen. One side of the component 401 is bent, and the foldable electronic device 400 is an internal folding screen device. Please refer to FIG. 3 , which is a schematic structural diagram of a foldable electronic device according to another embodiment of the present application. In the foldable electronic device 400 , the flexible screen component 401 is bent outward, that is, the foldable housing component 402 is directed away from the flexible screen component 402 . One side of the screen assembly 401 is bent, and the foldable electronic device 400 is an outward-folding screen device. In Figures 2 and 3, the direction pointed by the arrow is the direction of folding. The flexible screen assembly 401 and the foldable housing assembly 402 can be bent along the dotted line. The dotted line is the bending line or folding line. It can be understood that the bending line Not a physical part. It can be understood that the flexible screen assembly 401 can also be a scroll screen.

Please refer to FIG. 4 , which is a schematic cross-sectional view of a flexible screen assembly in an unfolded state according to an embodiment of the present application. The flexible screen assembly 401 includes a support member 100 and a flexible screen 200 . The support member 100 is used to support the flexible screen 200 . In order to obtain a thin and light foldable electronic device 400, the components of the foldable electronic device 400 need to be improved. Since the thickness of the cover 204 of the flexible screen 200 is thinner, the cover 204 of the flexible screen 200 is often modified. Thinning to reduce the thickness and weight of the foldable electronic device 400 causes the flexible screen 200 to sink after being pressed. Therefore, the support 100 is provided to support the flexible screen 200 and ensure the normal operation of the flexible screen 200 use. In one embodiment, the flexible screen 200 has a display surface and a non-display surface arranged oppositely, and the support 100 is provided on the side of the flexible screen 200 facing the non-display surface, thereby ensuring the normal operation of the display surface of the flexible screen 200 . In another embodiment, the support member 100 is completely attached to the side of the flexible screen 200 close to the support member 100 , that is, the support member 100 is attached to the entire surface of the flexible screen 200 and the joint surface is flat, so that the flexible screen 200 is evenly affected. The supporting force avoids the problem of partial surface subsidence caused by uneven force on the flexible screen 200, ensuring the performance of the flexible screen 200, and also enabling the support member 100 and the flexible screen 200 to bend synchronously when the foldable electronic device 400 is bent. fold to avoid problems such as reverse arching of the flexible screen 200.

Please refer to FIG. 5 , which is a schematic diagram of an unfolded state of a flexible screen according to an embodiment of the present application. Please refer to FIGS. 4 and 5 . The flexible screen 200 has a bendable portion 210 . It can be understood that the bendable portion 210 can be bent during the bending and folding process of the flexible screen 200 to achieve folding and opening of the foldable electronic device 400 . It can be understood that the flexible screen 200 may have one or more bendable parts 210 . Further, the flexible screen 200 also includes a non-bending part 220, and the non-bending part 220 is connected to the bendable part 210. It can be understood that the flexible screen 200 may have one or more non-bending portions 220 . In one embodiment, the flexible screen 200 has two non-bending portions 220 , and the bendable portion 210 is disposed between the two non-bending portions 220 . By disposing the bendable part 210 between the two non-bendable parts 220 , the bendable part 210 can be folded and opened along with the movement of the non-bendable part 220 during the bending process. In a specific embodiment, as shown in FIGS. 4 and 5 , two non-bendable portions 220 are respectively located on the left and right sides of the bendable portion 210 . It can be understood that the number and arrangement of the bendable portions 210 and the non-bendable portions 220 in the flexible screen 200 are not limited thereto, and can be selected as needed.

Please refer to FIG. 6 , which is a schematic cross-sectional view in the A-A direction of FIG. 5 , in which the flexible screen 200 includes a substrate 201 , a flexible display panel 202 , a polarizer 203 and a cover 204 that are stacked in sequence. The substrate 201 can support and protect the flexible display panel 202. The thickness of the substrate 201 can be but is not limited to 20 μm-100 μm, such as 30 μm, 50 μm, 60 μm, 70 μm or 90 μm. The material of the substrate 201 can be but is not limited to. Limited to polyimide, polyurethane or foam. The flexible display panel 202 may include a light-emitting layer and a substrate, and the substrate is disposed between the base material 201 and the light-emitting layer. The thickness of the luminescent layer may be, but is not limited to, 30 μm-40 μm, such as 30 μm, 33 μm, 35 μm, 37 μm or 40 μm, etc. The luminescent layer may be, but is not limited to, an organic light-emitting diode (OLED) module; the substrate The thickness may be, but is not limited to, 30 μm-50 μm, such as 30 μm, 35 μm, 40 μm, 45 μm or 50 μm, etc., and the material of the substrate may be, but is not limited to, polyimide. The thickness of the polarizer 203 may be, but is not limited to, 30 μm-80 μm, such as 35 μm, 40 μm, 55 μm, 70 μm, or 75 μm. The thickness of the cover plate 204 may be, but is not limited to, 30 μm-80 μm, such as 35 μm, 40 μm, 50 μm, 60 μm, 70 μm or 80 μm, etc. The material of the cover plate 204 may be, but is not limited to, resin, glass, etc.; for example, the thickness of a glass cover plate The thickness may be, but is not limited to, 30 μm-50 μm to reduce the thickness and weight of the flexible screen 200; another example is the polyimide cover, which may have a thickness of, but is not limited to, 50 μm-80 μm, which is light in weight and has good light transmittance. In one embodiment, the base material 201 of the flexible screen 200 in the flexible screen assembly 401 is attached to the support member 100 . In another embodiment, the flexible screen 200 may include at least one connection layer disposed between the substrate 201 and the support 100, between the substrate 201 and the flexible display panel 202, and between the flexible display panel 202 and the polarizer. 203, and/or between the polarizer 203 and the cover plate 204, used to connect the multi-layer structure in the flexible screen assembly 401. Specifically, the connection layer may be, but is not limited to, at least one of an optical adhesive layer and a pressure-sensitive adhesive layer. The thickness of the connection layer may be, but is not limited to, 10 μm-50 μm, such as 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40μm or 50μm etc. For example, the thickness of the connection layer between the base material 201 and the support 100 may be 10 μm-30 μm, and the connection layer may be a pressure-sensitive adhesive layer; the thickness of the connection layer between the base material 201 and the flexible display panel 202 may be 10 μm-30 μm. 30 μm, the connection layer can be a pressure-sensitive adhesive layer; the thickness of the connection layer between the flexible display panel 202 and the polarizer 203 can be 10 μm-50 μm, the connection layer can be a pressure-sensitive adhesive layer; between the polarizer 203 and the cover plate 204 The thickness of the connection layer can be 50μm, and the connection layer can be an optical adhesive layer.

Please refer to FIG. 7 , which is a schematic cross-sectional view of the unfolded state of the flexible screen assembly provided by another embodiment of the present application. The flexible screen assembly 401 may also include a heat sink 300 , and the heat sink 300 is disposed on a side surface of the support member 100 away from the flexible screen 200 . The flexible screen assembly 401 may have one or more heat dissipation members 300, and the distribution mode of the heat dissipation members 300 on the surface of the support member 100 may be selected according to heat dissipation requirements. In one embodiment, the heat dissipation member 300 corresponds to the non-bent portion 220 of the flexible screen 200, so that the heat dissipation member 300 will not be bent, and there is no need to select a flexible heat dissipation material, which reduces process difficulty.

In the embodiment of the present application, the support 100 includes a carbon fiber resin plate 10 . The carbon fiber resin plate 10 has low density, high specific strength, and high specific modulus, which improves the mechanical properties of the support member 100 and ensures the support force of the support member 100 for the flexible screen 200 . Please refer to FIGS. 8 and 9 , which are schematic cross-sectional views and plan views of a support member according to an embodiment of the present application. The support member 100 includes a carbon fiber resin plate 10 , and the carbon fiber resin plate 10 includes a bendable area 11 and a bendable area 11 . Support areas 12 on either side of area 11 . It can be understood that the bendable area 11 can be bent, so that the carbon fiber resin plate 10 and the support member 100 can be bent and folded. The support area 12 can be provided corresponding to the non-bending portion 220 of the flexible screen 200. For the flexible screen 200 To achieve the supporting function, the supporting area 12 is connected with the bendable area 11 . In one embodiment, the bendable area 11 is bent around a first direction, the first direction is perpendicular to the direction in which the bendable area 11 and the support area 12 are arranged, and the first direction is parallel to the support area 12 . As shown in FIG. 9 , the bendable area 11 is bent around the first direction, the dotted line L is the bending line, and the extending direction of the dotted line L is the first direction. In one embodiment, the carbon fiber resin plate 10 has a first surface, and the bendable area 11 can be bent around a first direction to fold or unfold the first surface; the first direction is parallel to the support area 12, that is, the first direction is parallel to the support area 12. The first surface in the unfolded state is parallel. It can be understood that the carbon fiber resin plate 10 may also have a second surface opposite to the first surface.

In the embodiment of the present application, the material of the carbon fiber resin plate 10 includes carbon fiber and thermosetting resin. The arrangement of carbon fibers improves the mechanical strength of the carbon fiber resin plate 10, and the thermosetting resin plays a load-bearing role for the carbon fibers. In one embodiment, the thermosetting resin includes at least one of epoxy resin, bismaleimide resin, polyetheretherketone resin, polycyanate, polyimide and polycarbonate. The above resin has excellent mechanical properties and bonding properties, ensuring the use of the carbon fiber resin plate 10 . Please refer to FIG. 10 , which is a schematic cross-sectional view of a carbon fiber resin plate according to an embodiment of the present application. The carbon fiber resin plate 10 includes multiple layers of laminated carbon fiber resin films 101 . That is to say, multiple layers of carbon fiber resin films 101 are stacked in the thickness direction, such as two layers, three layers, four layers, etc. to form the carbon fiber resin plate 10 . Further, the carbon fiber resin plate 10 includes three or more layers of carbon fiber resin films 101 . In one embodiment, multiple carbon fibers are oriented in one direction, spread out in a thermosetting resin solution, and heated and solidified to form a carbon fiber resin film 101 . For example, carbon fibers are conveyed along the conveying direction through multiple guide rollers, and the carbon fibers are laid flat along the conveying direction and spread in a thermosetting resin solution, and passed through a heating roller, a hot pressing roller and a cooling plate to form the carbon fiber resin film 101. It can be understood that the carbon fibers in the carbon fiber resin film 101 are all oriented and arranged in one direction. In another embodiment, multiple layers of carbon fiber resin films 101 are stacked, and a thermosetting resin adhesive is coated between the multiple layers of carbon fiber resin films 101 and heated and solidified to form a carbon fiber resin plate 10 . The material of the thermosetting resin solution and the thermosetting resin adhesive may include at least one of epoxy resin, bismaleimide resin, polyetheretherketone resin, polycyanate, polyimide and polycarbonate, For example, the materials of the thermosetting resin solution and the thermosetting resin adhesive can be the same. In another embodiment, the thickness of the carbon fiber resin film 101 may be 15 μm-50 μm, such as 15 μm, 20 μm, 25 μm, 30 μm, 40 μm or 45 μm, etc.

It can be understood that during the use of the foldable electronic device 400, multiple bending operations are required, which requires the support member 100 to have excellent bending resistance, and the existing support member 100 cannot meet the bending resistance requirements. Usage requirements.

In the embodiment of the present application, the mass content of carbon fibers in the bendable area 11 is less than 50%, and/or the extending direction of the carbon fibers in the bendable area 11 is parallel to the first direction or has a first included angle. The first included angle Less than or equal to 10°. The carbon fiber content in the bendable area 11 is less than 50%, which can reduce the bending modulus and bending stress of the carbon fiber resin plate 10 in the bendable area 11 and improve the bending resistance of the bendable area 11; carbon fiber has anisotropy. Changing the extension direction (orientation) of the carbon fiber so that the extension direction of the carbon fiber is parallel to the first direction or has a small angle, reduces the bending modulus and bending stress of the bendable area 11 in the carbon fiber resin plate 10, and improves the bendability The bending resistance of folding zone 11. The carbon fiber resin plate 10 has low density, high specific strength, and high specific modulus, which improves the strength of the support member 100 and ensures the support force of the support member 100 to the flexible screen 200; by changing the content and content of carbon fibers in the bendable area 11 / Or orientation, reduce the bending modulus and bending stress of the bendable area 11, thereby significantly improving the bending resistance of the carbon fiber resin plate 10 and the support member 100, which is beneficial to the use of the support member 100 in the flexible screen assembly 401 and the foldable screen assembly 401. The application in the electronic device 400 improves the service life of the flexible screen assembly 401 and the foldable electronic device 400 .

In the first implementation manner of this application, the extending direction of the carbon fiber in the bendable area 11 is parallel to the first direction or has a first included angle, and the first included angle is less than or equal to 10°. Please refer to Figure 11, which is a schematic diagram of the bending area of the carbon fiber resin plate provided by one embodiment of the present application. The extension direction of the carbon fiber (shown in gray in the figure) is parallel to the first direction (the extension direction of the dotted line L). . It can be understood that in other embodiments, the extension direction of the carbon fiber and the first direction may have a first included angle, and the first included angle is less than or equal to 10°. Since the carbon fiber is anisotropic, the orientation of the carbon fiber is changed, so that the bending modulus of the bendable area 11 is reduced. At the same time, when the orientation of the carbon fiber is parallel to the first direction or has a small angle, it can be bent during the bending process. The ability of the bending zone 11 to resist bending or unfolding is reduced, further reducing the bending modulus, thus improving the bending resistance of the bendable zone 11 . In one embodiment, the extending direction of the carbon fiber is parallel to the first direction, thereby significantly reducing the bending modulus of the bendable region 11 . In another embodiment, the first angle between the extension direction of the carbon fiber and the first direction may be 0.5°-10°. Specifically, the first angle between the extension direction of the carbon fiber and the first direction may be, but is not limited to, 0.5°, 1°, 2°, 3°, 5°, 7° or 9°. In another embodiment, the first angle between the extension direction of the carbon fiber and the first direction may be 0.5°-3°, thus further reducing the bending modulus of the bendable region 11 . In yet another embodiment, the first angle between the extension direction of the carbon fiber and the first direction may be 4°-8°. In the embodiment of the present application, the extending direction of the carbon fibers in the bendable area 11 is parallel to the first surface in the expanded state. Since carbon fiber has anisotropy, setting the extension direction of the carbon fiber in the bendable area 11 to be parallel to the first surface can improve the bending strength of the bendable area 11 and further improve the bending resistance of the bendable area 11 . In one embodiment, the extension direction of the carbon fiber is parallel to the first direction and the extension direction of the carbon fiber is parallel to the first surface in the unfolded state, thereby significantly reducing the bending modulus of the bendable area 11 while ensuring that the bendable area 11 The bending strength improves the bending resistance of the bendable area 11. It can be understood that in this implementation, changing the orientation of the carbon fiber can reduce the bending modulus of the bendable zone 11 and improve the bending resistance of the bendable zone 11; therefore, at this time, the bending zone 11 The mass content of medium carbon fiber is not limited. In one embodiment, the mass content of carbon fibers in the bendable region 11 may be less than or equal to 80%, less than or equal to 70%, less than or equal to 60%, less than 50%, etc.

In the second implementation manner of the present application, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 50%. Specifically, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 can be, but is not limited to, 0, 10%, 15%, 23%, 25%, 30%, 36%, 40%, 48%, etc. In one embodiment, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 30%, thereby further reducing the bending modulus of the carbon fiber resin plate 10 . In another embodiment, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is 0. That is to say, the bendable area 11 does not contain carbon fiber, and the material of the bendable area 11 is thermosetting resin. Since the flexural modulus of thermosetting resin is much lower than that of carbon fiber, this setting significantly improves the bending resistance of the bendable area 11. At the same time, the high strength of the thermosetting resin further ensures the use of the bendable area 11. life. It can be understood that at this time, the carbon fiber resin plate 10 may have other areas except the bendable area 11, and the other areas may contain carbon fibers. It can be understood that in this implementation, reducing the carbon fiber content in the bendable region 11 can reduce the bending modulus of the bendable region 11 and improve the bending resistance of the bendable region 11; therefore, at this time The orientation of the carbon fibers in the bendable region 11 is not limited. In one embodiment, the extending direction of the carbon fibers in the bendable area 11 may be parallel to the first direction, or may have an included angle with the first direction. The included angle is not limited, for example, it may be 90°.

In the third implementation manner of this application, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 50%, and the extending direction of the carbon fibers is parallel to the first direction or has a first included angle. Less than or equal to 10°. It can be understood that at this time, the mass content of carbon fiber in the bendable area 11 needs to be greater than 0. By changing the content and orientation of the carbon fibers in the bendable zone 11, the bending modulus of the bendable zone 11 is synergistically reduced and the bending resistance of the bendable zone 11 is improved. In one embodiment, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 50%, and the extending direction of the carbon fibers is parallel to the first direction. In another embodiment, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 30%, and the extending direction of the carbon fibers is parallel to the first direction. In another embodiment, the mass content of carbon fibers in the bendable area 11 of the carbon fiber resin plate 10 is less than 30%, and the extending direction of the carbon fibers has a first included angle with the first direction, and the first included angle is less than or equal to 10°. .

In the embodiment of the present application, the thickness of the bendable region 11 may be 10 μm-200 μm (such as 10 μm, 20 μm, 50 μm, 60 μm, 100 μm, 140 μm, 150 μm, 175 μm or 190 μm, etc.). Providing the bendable area 11 with the above thickness can ensure the strength and supporting effect of the bendable area 11 without excessively increasing the weight and thickness of the carbon fiber resin plate 10 . In an embodiment, when the bendable region 11 contains carbon fiber, the thickness of the bendable region 11 may be 10 μm-50 μm. In another embodiment, when the mass content of carbon fiber in the bendable region 11 is 0, the thickness of the bendable region 11 may be 30 μm-80 μm, thereby ensuring the strength of the bendable region 11 .

In the embodiment of the present application, the bendable area 11 is provided with a hole structure 13 . By providing the hole structure 13, the internal stress of the bendable area 11 during the bending process is reduced, and the bending resistance of the bendable area 11 is further improved. The bendable area 11 may be provided with a plurality of hole structures 13 . It can be understood that when the hole structure 13 is not provided, the bending resistance of the support 100 can be improved by changing the content and orientation of the carbon fiber in the bendable area 11, and avoids improving the bending resistance only through opening holes, thus reducing the process difficulty and processing cost, while improving production yield. In the embodiment of the present application, the hole structure 13 includes at least one of a through hole and a blind hole. Please refer to FIG. 12 , which is a schematic cross-sectional view of a support member according to another embodiment of the present application. The bendable area 11 of the carbon fiber resin plate 10 is provided with a hole structure 13 , and the hole structure 13 is a blind hole. The opening of the blind hole faces the side away from the flexible screen 200 . The blind hole includes a bottom wall and an annular side wall. The bottom wall and annular side wall surround a cavity forming the blind hole. Please refer to FIG. 13 , which is a schematic cross-sectional view of a support member according to another embodiment of the present application. The bendable area 11 of the carbon fiber resin plate 10 is provided with a hole structure 13 , and the hole structure 13 is a through hole. The through hole penetrates the side surface of the carbon fiber resin plate 10 close to the flexible screen 200 and the side surface away from the flexible screen 200 . In another embodiment, the hole structure 13 provided in the bendable area 11 includes both blind holes and through holes. In this application, the lateral size, opening shape, distribution density, depth of blind holes, etc. of the hole structure 13 are selected according to needs. In one embodiment, the opening of the hole structure 13 may be, but is not limited to, a circle, an ellipse, a waist circle, a rectangle, a square, a rhombus, a regular hexagon, an irregular shape, etc. Please refer to Figure 14, which is a schematic structural diagram of the bendable area of the carbon fiber resin plate provided by an embodiment of the present application. In Figure 14 (a)-(d), the opening shapes of the mesoporous structure 13 are circular and girdle in order. Shape, rectangle and rhombus. Specifically, the shapes of the plurality of hole structures 13 in the bendable area 11 may be the same or different. Please refer to Figure 15, which is a schematic cross-sectional view of the bendable area of the carbon fiber resin plate provided by an embodiment of the present application, in which the hole structure 13 along the thickness direction of the bendable area 11 in Figure 15 (a)-(c) The cross-sectional shapes are inverted V-shape, inverted U-shape and trapezoid. In another embodiment, the hole structures 13 in the bendable area 11 are regularly arranged. Furthermore, with the first direction as the center, the hole structures 13 are arranged symmetrically, thereby ensuring uniform stress on the bendable area 11 . Furthermore, the hole structures 13 in the bendable region 11 are arranged in an array. In a specific embodiment, as shown in FIG. 14(b) , the hole structure 13 is a strip hole, and the opening shape is a waist circle. The length direction of the hole structure 13 is parallel to the bending line, and the plurality of hole structures 13 are parallel to each other. Arrange in an array at intervals in the direction of the bending line and in the direction perpendicular to the bending line. In this application, the arrangement of the hole structure 13 needs to ensure the strength of the bendable area 11; for example, when the thickness of the bendable area 11 is 100 μm and the aperture width of the hole structure 13 is 150 μm, the yield strength of the bendable area 11 is greater than or Equal to 700MPa, and if the thickness of the bendable zone 11 is 150μm, and the aperture width of the hole structure 13 is 150μm, the yield strength of the bendable zone 11 is greater than or equal to 400MPa, which not only ensures the strength of the bendable zone 11, but also ensures that the holes Molding yield of structure 13.

In the embodiment of the present application, the hole structure 13 can be formed in the bendable area 11 through laser, computer digital control precision machining, etc., such as laser ablation, laser engraving, etc. In one embodiment, the bendable area 11 can be fixed by adsorption, and a nano-UV exciter with a power of more than 5W is used to perform laser drilling. At the same time, an air blowing device is provided around the bendable area 11. During the processing The resulting debris can be blown away.

Please refer to FIG. 16 , which is a schematic structural diagram of the support member in a folded state according to an embodiment of the present application. In the folded state, the support member 100 is in a U-shape. In one embodiment, the distribution density of the hole structure 13 in the bendable area 11 of the carbon fiber resin plate 10 gradually decreases along the second direction, where the second direction is the arrangement direction of the bendable area 11 and the support area 12 . In another embodiment, the depth of the hole structure 13 gradually decreases along the second direction. In yet another embodiment, the thickness of the bendable region 11 gradually increases along the second direction. This not only improves the strength of the bendable area 11 but also improves the bending resistance of the bendable area 11 .

Please refer to FIG. 17 , which is a structural schematic diagram of the folded state of the support member provided by another embodiment of the present application. In the folded state, the support member 100 is in the shape of a water drop. In the embodiment of the present application, the bendable area 11 of the carbon fiber resin plate 10 includes an inner bending area 111 and an outer bending area 112 . The inner bending area 111 faces the inside of the foldable electronic device 400 , and the outer bending area 112 faces the outside of the foldable electronic device 400 . In one embodiment, the bendable area 11 is provided with a hole structure 13, and the hole structure 13 includes at least one of a through hole and a blind hole; the inner bending area 111 is provided with a first hole structure, and the outer bending area is provided with a second hole structure. Pore structure. That is to say, the first hole structure and the second hole structure include at least one of through holes and blind holes. It can be understood that the opening of the blind hole faces the side away from the flexible screen 200 . Furthermore, the distribution density of the first pore structure is greater than the distribution density of the second pore structure, thereby reducing the stress on the inner bending area 111 during the bending process, improving the bending resistance of the inner bending area 111, and the pore structure The distribution density of 13 is reduced, which also ensures the strength of the bendable area 11. Furthermore, the depth of the first hole structure is greater than the depth of the second hole structure, thereby improving the bending resistance of the inner bending area 111 and ensuring the strength of the bendable area 11 . Specifically, the first hole structure is a through hole, and the second hole structure is a blind hole. In another embodiment, the thickness of the inner bending area 111 is smaller than the thickness of the outer bending area, thereby improving the bending resistance of the inner bending area 111 and ensuring the strength of the bendable area 11 . Further, please refer to FIG. 17 , the bendable area 11 also includes a transition area 113 , which is used to connect the inner bending area 111 and the outer bending area 112 . Specifically, in the second direction, the distribution density of the hole structure 13 in the bendable area 11 gradually decreases, and/or the depth of the hole structure 13 gradually decreases, and/or the thickness of the bendable area 11 gradually increases. , so that the bendable area 11 has both excellent bending resistance and high strength, ensuring the supporting effect of the carbon fiber resin plate 10 .

In the embodiment of the present application, the bending modulus of the bendable region 11 is less than or equal to 20 GPa, and the bending strength is greater than or equal to 150 MPa. This ensures the bending resistance and support strength of the support member 100 . In one embodiment, when the mass content of carbon fiber in the bendable region 11 is 0, the bending modulus of the bendable region 11 is less than or equal to 8 GPa. In another embodiment, when the extending direction of the carbon fibers in the bendable region 11 is parallel to the first direction, the bending modulus of the bendable region 11 is less than or equal to 12 GPa.

In the embodiment of the present application, the mass content of carbon fibers in the support area 12 is 50%-80% (such as 50%, 60%, 70%, 80%, etc.). The mass content of carbon fiber in the support area 12 is relatively high, which improves the strength of the support area 12, ensures the mechanical properties of the carbon fiber resin plate 10 and the support member 100, and is conducive to improving the support effect of the support member 100 on the flexible screen 200. Further, the mass content of the thermosetting resin in the support area 12 is 20%-50% (such as 20%, 25%, 30%, 40%, 50%, etc.). In the embodiment of the present application, the difference between the mass content of carbon fibers in the support area 12 and the mass content of the carbon fibers in the bendable area 11 is greater than or equal to 20%. In this way, the carbon fiber content in the support area 12 is high, which ensures the mechanical properties of the carbon fiber resin plate 10 and the support member 100. The carbon fiber content in the bendable area 11 is small, which ensures the bending resistance of the carbon fiber resin plate 10 and the support member 100. Thereby, the service life of the carbon fiber resin plate 10 and the support member 100 is improved. Furthermore, the difference between the mass content of carbon fibers in the support area 12 and the mass content of the carbon fibers in the bendable area 11 is greater than or equal to 30%. Furthermore, the difference between the mass content of carbon fibers in the support area 12 and the mass content of the carbon fibers in the bendable area 11 is greater than or equal to 40%. In one embodiment, the mass content of carbon fibers in the support area 12 is 50%-80%, and the mass content of carbon fibers in the bendable area 11 is less than or equal to 30%.

In the embodiment of the present application, the extension direction of the carbon fiber in the support area 12 has a second included angle with the first direction, and the second included angle is 70°-110°. For example, 70°, 75°, 80°, 85°, 90°, 100° or 110°, etc. By making the extending direction of the carbon fiber in the support area 12 have a larger angle with the first direction, the strength of the support area 12 is improved and the mechanical performance of the support member 100 is ensured. In one embodiment, the extending direction of the carbon fibers in the support area 12 is parallel to the first surface in the unfolded state, and the extending direction of the carbon fibers has a second included angle with the first direction. This can further improve the strength of the support area 12 . Furthermore, the extending direction of some of the carbon fibers in the support area 12 is parallel to the first surface in the deployed state, and the extending direction of some of the carbon fibers is perpendicular to the first surface in the deployed state. By arranging carbon fibers in the vertical direction, a thermal conductive path is formed in the thickness direction of the carbon fiber resin plate 10, thereby improving the heat dissipation effect of the foldable electronic device 400. In one embodiment, the extension direction of the carbon fibers in the support area 12 is perpendicular to the first direction; further, the extension direction of the carbon fibers in the support area 12 is also parallel to the first surface in the expanded state, thereby greatly improving the strength of the support area 12 , improving the performance of the support member 100 . Please refer to Figure 18, which is a schematic structural diagram of a carbon fiber resin plate provided by an embodiment of the present application. It is a longitudinal cross-sectional view in the thickness direction of the carbon fiber resin plate 10, in which the extension direction of the carbon fibers in the support area 12 is perpendicular to the first direction. The extension direction of the carbon fibers in the bendable area 11 is parallel to the first direction, and the gray part in the figure is represented by carbon fibers. It can be understood that the shape, size, etc. of the carbon fiber can be selected as needed. The illustration of the carbon fiber in the figure is only used to indicate the orientation of the carbon fiber, and does not limit the distribution density, shape, etc. of the carbon fiber.

In the embodiment of the present application, the thickness of the support area 12 may be 50 μm-200 μm, such as 50 μm, 65 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm or 200 μm, etc. Providing the support area 12 with the above thickness can ensure the support effect of the carbon fiber resin plate 10 without excessively increasing the weight and thickness of the carbon fiber resin plate 10 . In the embodiment of the present application, the thickness of the support area 12 is greater than or equal to the thickness of the bendable area 11 . At this time, the thickness of the support area 12 can be used as the thickness of the carbon fiber resin plate 10 . Please refer to FIG. 19 , which is a schematic cross-sectional view of a support member according to another embodiment of the present application, in which the thickness of the support area 12 is greater than the thickness of the bendable area 11 . It can be understood that the surfaces of the support area 12 and the bendable area 11 facing the flexible screen 200 are still coplanar to ensure the supporting function of the carbon fiber resin plate 10 and to make the flexible screen 200 receive uniform force. In one embodiment, the thickness of the support area 12 may be 50 μm-200 μm, the thickness of the bendable area 11 may be 10 μm-200 μm, and the thickness of the support area 12 may be greater than or equal to the thickness of the bendable area 11 . This arrangement not only ensures the support effect of the support area 12 but also ensures the bending resistance of the bendable area 11 without excessively increasing the weight of the carbon fiber resin plate 10 . Further, the thickness of the bendable region 11 is 10 μm-80 μm, such as 10 μm, 25 μm, 40 μm, 50 μm, 60 μm or 75 μm.

In one embodiment of the present application, the support 100 includes a carbon fiber resin plate 10. The carbon fiber resin plate 10 includes a bendable area 11 and a support area 12 connected to the bendable area 11. The mass content of carbon fibers in the bendable area 11 is is 0, and the mass content of carbon fiber in the support area 12 is 50%-80%. Furthermore, the thickness of the support area 12 is greater than the thickness of the bendable area 11 . Further, the bendable area 11 is provided with a hole structure 13, and the hole structure 13 includes at least one of a through hole and a blind hole. In another embodiment of the present application, the support 100 includes a carbon fiber resin plate 10. The carbon fiber resin plate 10 includes a bendable area 11 and a support area 12 connected to the bendable area 11. The carbon fiber resin plate 10 has a first surface, The bendable area 11 can be bent around a first direction to fold or unfold the first surface. The extending direction of the carbon fibers in the bendable area 11 is parallel to the first direction, and the extending direction of the carbon fibers in the supporting area 12 is parallel to the first direction. Vertical and parallel to the first surface in the unfolded state. Furthermore, the thickness of the support area 12 is greater than the thickness of the bendable area 11 . Further, the bendable area 11 is provided with a hole structure 13, and the hole structure 13 includes at least one of a through hole and a blind hole. Further, the mass content of carbon fiber in the support area 12 is 50%-80%.

Comparative Example: The bendable area (thickness 150 μm) of the carbon fiber resin plate includes a mass content of 67% carbon fiber and 33% epoxy resin. The extension direction of the carbon fiber is perpendicular to the first direction and parallel to the first surface in the unfolded state. , at this time, the bending modulus of the bendable area is 120Gpa, and the bending strength is 1500Mpa; cracks appeared when the carbon fiber resin plate was bent 100,000 times, affecting its continued use. Example 1: The bendable area 11 (thickness 150 μm) of the carbon fiber resin plate 10 is made of epoxy resin, that is, the bendable area 11 does not contain carbon fiber. Example 2: The bendable area 11 (thickness 150 μm) of the carbon fiber resin plate 10 includes a mass content of 67% carbon fiber and 33% epoxy resin, and the extending direction of the carbon fiber is parallel to the first direction. Example 3: The difference from Example 2 is that the mass content of carbon fiber in the bendable area 11 is 33%. Example 4: The difference from Example 3 is that the angle between the extension direction of the carbon fiber and the first direction is 3°, and the extension direction of the carbon fiber is parallel to the first surface in the unfolded state. Example 5: The difference from Example 3 is that the extending direction of the carbon fiber is perpendicular to the first direction, and the extending direction of the carbon fiber is parallel to the first surface in the expanded state. Example 6: The difference from the comparative example is that the angle between the extension direction of the carbon fiber and the first direction is 1°. Example 7: The difference from the comparative example is that the angle between the extension direction of the carbon fiber and the first direction is 3°. Example 8: The difference from the comparative example is that the angle between the extension direction of the carbon fiber and the first direction is 8°. After testing, the bending modulus of the bendable area 11 of the carbon fiber resin plate 10 produced in the embodiment is much lower than that of the comparative example, the number of bends is much higher than that of the comparative example, and the bending strength reaches more than 150MPa; Example 1 The bending modulus of the bendable area 11 in the carbon fiber resin plate 10 prepared in -3 is lower than that of other embodiments, and the number of bending times is higher than that of other embodiments; the bendable area of the carbon fiber resin plate 10 prepared in Example 4 The bending modulus of 11 is lower than that of Example 5, and the number of bending times is higher than that of Example 5; the bending modulus of the bendable zone 11 in the carbon fiber resin plate 10 prepared in Example 6 is lower than that of Example 7, and the bending number is higher than that of Example 5. The bending modulus of the bendable area 11 in the carbon fiber resin plate 10 prepared in Example 7 is lower than that in Example 8, and the number of bending times is higher than that in Example 8; wherein, the bending times prepared in Example 1 The bending modulus of the bendable area 11 in the carbon fiber resin plate 10 is 3.5Gpa, and the bending strength is 150Mpa. The carbon fiber resin plate 10 can be bent more than 200,000 times without any adverse phenomena; the product prepared in Example 2 The bending modulus of the bendable area 11 of the carbon fiber resin plate 10 is 9Gpa, and the bending strength is 200Mpa. The carbon fiber resin plate 10 can be bent more than 200,000 times without any defects. It can be seen that by changing the content and/or orientation of carbon fibers, the bending resistance of the carbon fiber resin plate 10 can be greatly improved and its service life can be extended.

In the embodiment of the present application, the first carbon fiber resin sub-board and the second carbon fiber resin sub-board are spliced, and the splicing surface is coated with a thermosetting resin adhesive, and the carbon fiber resin board 10 is formed by heating and curing, wherein the first carbon fiber resin sub-board is The resin sub-plate serves as the bendable area 11, and the second carbon fiber resin sub-plate serves as the supporting area 12. By controlling the content and/or orientation of carbon fibers in the first carbon fiber resin sub-plate to meet the needs of bending resistance, the number of the second carbon fiber resin sub-plate can be two or more, the first carbon fiber resin sub-plate and The second carbon fiber resin sub-board may be formed by stacking multiple layers of carbon fiber resin films 101, which may be selected as needed.

Please refer to FIG. 20 , which is a schematic cross-sectional view of a support member according to another embodiment of the present application. The support member 100 may also include a support film 20 , and the support film 20 is disposed on the surface of the carbon fiber resin plate 10 . The provision of the supporting film 20 further increases the strength of the supporting member 100 and improves the supporting force of the supporting member 100 on the flexible screen 200 . In one embodiment, the orthographic projection of the supporting film 20 on the carbon fiber resin plate 10 completely covers the carbon fiber resin plate 10 , that is, the supporting film 20 is disposed on the entire surface of the carbon fiber resin plate 10 . In another embodiment, please refer to FIG. 20 , the support film 20 is provided corresponding to the support area 12 of the carbon fiber resin plate 10 , that is to say, the support film 20 is not provided in the bendable area 11 of the carbon fiber resin plate 10 , which improves the efficiency. The bending resistance of the support member 100 also ensures the mechanical strength of the support member 100 . In one embodiment, the material of the support film 20 can be, but is not limited to, copper alloy, aluminum alloy, titanium alloy, magnesium alloy, zinc alloy, stainless steel or liquid metal, etc., so that the support film 100 has both high stiffness, high thermal conductivity and Lightweight performance. In another embodiment, the thickness of the support 100 may range from 60 μm to 280 μm. Further, the thickness of the support member 100 may be 100 μm-180 μm. Specifically, the thickness of the support member 100 may be, but is not limited to, 100 μm, 120 μm, 150 μm, 160 μm, 170 μm or 180 μm, etc.

Please refer to Figure 21, which is a schematic structural diagram of a foldable electronic device according to an embodiment of the present application. The structure of the foldable electronic device 400 may include an RF circuit 410, a memory 420, an input unit 430, a display unit 440, a sensor 450, an audio Circuit 460, WiFi module 470, processor 480, power supply 490, etc. Among them, the RF circuit 410, memory 420, input unit 430, display unit 440, sensor 450, audio circuit 460, and WiFi module 470 are respectively connected to the processor 480; the power supply 490 is used to provide power for the entire foldable electronic device 400. Specifically, the RF circuit 410 is used to receive and receive signals; the memory 420 is used to store data instruction information; the input unit 430 is used to input information, which may include other input devices such as a touch panel and operation keys; the display unit 440 may include a flexible screen 200, etc.; sensors 450 include infrared sensors, laser sensors, etc., used to detect user proximity signals, distance signals, etc.; speakers 461 and microphones 462 are connected to the processor 480 through the audio circuit 460, used to receive and receive sound signals; WiFi module 470 It is used to receive and transmit WiFi signals; the processor 480 is used to process data information of the foldable electronic device 400 .

In this application, the terms "setting" and "connection" should be understood broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or between two devices, components or components. internal connectivity. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. The terms “first” and “second” are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Unless otherwise stated, "plurality" means two or more.

The content provided by the embodiments of the present application has been introduced in detail above. This article has elaborated and explained the principles and implementation methods of the present application. The above description is only used to help understand the method of the present application and its core ideas; at the same time, for those in this field, Ordinary technicians will have changes in the specific implementation methods and application scope based on the ideas of this application. In summary, the content of this description should not be understood as a limitation of this application.

Claims (12)

1. The support piece is characterized in that the support plate is applied to the folding electronic equipment and comprises a carbon fiber resin plate, the carbon fiber resin plate comprises a bendable region and support regions arranged on two sides of the bendable region, and the mass content of carbon fibers in the bendable region is less than 50%, and/or

The bendable region can bend around a first direction, wherein the first direction is perpendicular to the arrangement direction of the bendable region and the support region and is parallel to the support region, the extending direction of the carbon fibers in the bendable region is parallel to the first direction or has a first included angle, and the first included angle is smaller than or equal to 10 degrees.

2. The support of claim 1, wherein the mass content of the carbon fibers in the bendable region is 0 or the extending direction of the carbon fibers in the bendable region is parallel to the first direction.

3. The support of claim 1, wherein the pliable region is provided with a hole structure comprising at least one of a through hole and a blind hole.

4. The support of claim 1, wherein the pliable region comprises an inward bend region and an outward bend region, the inward bend region being provided with a first aperture structure and the outward bend region being provided with a second aperture structure;

The distribution density of the first pore structure is greater than the distribution density of the second pore structure;

the depth of the first hole structure is greater than the depth of the second hole structure;

the thickness of the inward bending region is smaller than that of the outward bending region.

5. The support of claim 1, wherein the mass content of the carbon fibers in the support zone is 50% -80%.

6. The support of claim 5, wherein the difference in mass content of the carbon fibers in the support region and the bendable region is greater than or equal to 20%.

7. The support of claim 1, wherein the thickness of the support region is greater than or equal to the thickness of the pliable region;

the thickness of the supporting area is 50-200 mu m, and the thickness of the bendable area is 10-200 mu m.

8. The support of claim 1, wherein the direction of extension of the carbon fibers in the support zone has a second angle with the first direction, the second angle being 70 ° -110 °.

9. The support of claim 1, wherein the bendable region has a bending modulus of less than or equal to 20GPa and a bending strength of greater than or equal to 150MPa.

10. The support of claim 1, wherein the carbon fiber resin sheet material comprises the carbon fibers and a thermosetting resin;

the thermosetting resin comprises at least one of epoxy resin, bismaleimide resin, polyether-ether-ketone resin, polycyanate, polyimide and polycarbonate;

the carbon fiber resin sheet includes a plurality of carbon fiber resin films stacked.

11. A flexible screen assembly comprising the support of any one of claims 1-10 and a flexible screen, the support for supporting the flexible screen, the flexible screen having a bendable portion disposed in correspondence with the bendable region of the support.

12. A foldable electronic device comprising the flexible screen assembly of claim 11.