Electronic device, flexible display assembly, support and method of manufacturing the same

Abstract

The application provides an electronic device, a flexible display screen assembly, a support and a preparation method thereof; the support comprises a first support layer and a second support layer which are arranged in layers, a first bending area is arranged on the first support layer, a plurality of first through holes arranged in a matrix are arranged in the first bending area; a second bending area is arranged on the second support layer, the second bending area is arranged opposite to the first bending area, a plurality of second through holes arranged in a matrix are arranged in the second bending area, a circumferential cross-sectional dimension of the second through hole is greater than a circumferential cross-sectional dimension of the first through hole; and a side of the first support layer away from the second support layer is used for being attached to a flexible display screen. The flexible display screen support provided by the embodiment of the application can greatly reduce the processing time and the processing cost while meeting the bending requirement of the support and the support requirement of the flexible display screen by forming through holes with different sizes and processing methods on the two support layers.

Description

Technical Field

[0001] This application relates to the technical field of flexible display screen support structures, specifically to an electronic device, a flexible display screen assembly, a support component, and a method for manufacturing the same. Background Technology

[0002] In conventional technical solutions, the flexible screen used in folding phones has very low rigidity and is easy to bend. However, this is detrimental to the overall protection and display quality of the device. Therefore, the usual practice is to add a high-rigidity support plate to the bottom of the flexible screen to improve its impact resistance and support performance. The material is usually stainless steel, titanium alloy, etc.

[0003] To enable the bending area of ​​the support plate to bend easily, multiple mesh holes are typically created within this area. Since the support plate needs to be bonded to and support the flexible display screen, the mesh hole size cannot be too large; otherwise, the holes will be visible through the screen. Generally, laser or etching methods are used to create the mesh holes on the support plate. However, this approach has drawbacks: long processing time (requiring penetration through the entire thickness of the support plate) and high equipment costs. If machining is used, either the mesh hole size requirements cannot be met (for example, the diameter of a round hole is generally required to be no more than 2mm), or the processing cost is extremely high (e.g., using micro-hole milling). Summary of the Invention

[0004] The first aspect of this application provides a support member for a flexible display screen. The support member includes a first support layer and a second support layer stacked together. The first support layer has a first bending region with a plurality of first through holes arranged in a matrix within the first bending region. The second support layer has a second bending region opposite to the first bending region with a plurality of second through holes arranged in a matrix within the second bending region. The cross-sectional dimension of the second through holes along the circumferential direction is larger than the cross-sectional dimension of the first through holes along the circumferential direction. The side of the first support layer facing away from the second support layer is used to adhere to the flexible display screen.

[0005] Secondly, this application provides a flexible display assembly, which includes a flexible display screen and the support member described in the above embodiments, wherein the non-light-emitting side of the flexible display screen is bonded to the first support layer of the support member.

[0006] Thirdly, embodiments of this application provide an electronic device, the electronic device including a housing and a display screen assembly as described in the above embodiments; the housing includes a first housing, a second housing, and a pivot assembly; the first housing and the second housing are respectively connected to the pivot assembly, and the first housing and the second housing can rotate with the pivot assembly; the display screen assembly is respectively connected to the first housing and the second housing and spans the pivot assembly, and the display screen assembly can be folded or flattened with the relative rotation of the first housing and the second housing.

[0007] Fourthly, embodiments of this application provide a method for manufacturing a flexible display screen support, the method comprising:

[0008] Through holes are formed in the bending area of ​​the first substrate by machining to prepare a semi-finished product;

[0009] The second substrate is bonded to the semi-finished product;

[0010] Through holes are formed in the bending area on the second substrate using laser engraving; wherein the circumferential cross-sectional dimension of the through hole on the second substrate is smaller than the circumferential cross-sectional dimension of the through hole on the first substrate.

[0011] The flexible display support provided in this application embodiment, by forming through holes of different sizes and processing methods in two support layers, can significantly reduce processing time and lower processing costs while meeting the bending requirements of the support and the support requirements of the flexible display. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the unfolded state of an embodiment of the foldable electronic device of this application;

[0014] Figure 2 yes Figure 1 A schematic diagram of the folded state structure of the electronic device in the embodiment;

[0015] Figure 3 yes Figure 1 A cross-sectional view of the electronic device at point AA in the embodiment;

[0016] Figure 4 This is a schematic block diagram of the structure of an embodiment of the electronic device of this application;

[0017] Figure 5 This is a schematic diagram of the structure of an embodiment of the display screen assembly of this application;

[0018] Figure 6 This is a schematic diagram of the overall structure of one embodiment of the support component of this application;

[0019] Figure 7 yes Figure 6 A cross-sectional view of the support member at BB in the embodiment;

[0020] Figure 8 This is a cross-sectional structural schematic diagram of another embodiment of the support member of this application;

[0021] Figure 9 This is a structural diagram of a U-shaped folding flexible display screen;

[0022] Figure 10 This is a structural diagram of a teardrop-shaped folding flexible display screen.

[0023] Figure 11 This is a schematic diagram of the overall structure of another embodiment of the support component of this application;

[0024] Figure 12 yes Figure 11 A cross-sectional view of the support member at CC in the embodiment;

[0025] Figure 13 This is a schematic flowchart of an embodiment of the method for manufacturing the flexible display support component of this application;

[0026] Figure 14 This is a schematic flowchart of another embodiment of the method for preparing the flexible display support of this application. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0028] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0029] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0030] As used herein, “electronic device” (or simply “terminal”) includes, but is not limited to, means configured to receive / transmit communication signals via a wired connection (such as via a Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital Cable, Direct Cable Connection, and / or another data connection / network) and / or via a wireless interface (e.g., for cellular networks, Wireless Local Area Networks (WLANs), Digital Television Networks such as DVB-H networks, Satellite Networks, AM-FM Broadcast Transmitters, and / or another communication terminal). A communication terminal configured to communicate via a wireless interface may be referred to as a “wireless communication terminal,” a “wireless terminal,” or a “mobile terminal.” Examples of mobile terminals include, but are not limited to, satellite or cellular phones; personal communication system (PCS) terminals that may combine cellular radiotelephone with data processing, fax, and data communication capabilities; PDAs that may include radiotelephones, pagers, Internet / intranet access, web browsers, notepads, calendars, and / or Global Positioning System (GPS) receivers; and conventional laptop and / or handheld receivers or other electronic devices that include radiotelephone transceivers. A mobile phone is an electronic device equipped with a cellular communication module.

[0031] This application provides a foldable electronic device, please refer to the following embodiments as well. Figures 1 to 3 , Figure 1 This is a schematic diagram of the unfolded state of an embodiment of the foldable electronic device of this application; Figure 2 yes Figure 1 A schematic diagram of the folded state structure of the electronic device in the embodiment; Figure 3 yes Figure 1 The embodiment shows a cross-sectional view of the electronic device at point AA. It should be noted that the electronic device in this application may include mobile phones, tablets, laptops, wearable devices, and other electronic devices with foldable flexible displays. The electronic device 10 includes, but is not limited to, the following structures: a housing 100, a display assembly 200, and a circuit assembly 300.

[0032] For details, please continue reading Figure 2 and Figure 3 The housing 100 includes a first housing 110, a second housing 120, and a pivot assembly 130. The first housing 110 and the second housing 120 are respectively connected to the pivot assembly 130, and the first housing 110 and the second housing 120 can rotate with the pivot assembly 130. The detailed structure of the pivot assembly is within the understanding of those skilled in the art and will not be described further here. The display screen assembly 200 is respectively connected to the first housing 110 and the second housing 120 and spans across the pivot assembly 130. The display screen assembly 200 can rotate with the relative rotation of the first housing 110 and the second housing 120 (along the pivot assembly 130). Figure 3 Folding (in the direction of the double arrow) Figure 2 (in medium condition) or flattened ( Figure 1 (Mid-state).

[0033] Optionally, the circuit assembly 300 may include a battery 310 and a control circuit board 320, etc. In addition, the electronic device may also include a camera, a speaker and various sensors, etc. The detailed features of this part are within the understanding of those skilled in the art and will not be described in detail here.

[0034] Please see Figure 4 , Figure 4This is a schematic block diagram illustrating the structural composition of an embodiment of the electronic device of this application. The electronic device can be a foldable mobile phone, tablet computer, laptop computer, or wearable device, etc. This embodiment uses a foldable mobile phone as an example. The structure of the electronic device 10 may include an RF circuit 910, a memory 920, an input unit 930, a display unit 940 (which may be the display screen assembly 200 in the above embodiment), a sensor 950, an audio circuit 960, a Wi-Fi module 970, a processor 980 (which may be the control circuit board 320 in the above embodiment), and a power supply 990 (which may be the battery 310 in the above embodiment). The RF circuit 910, memory 920, input unit 930, display unit 940, sensor 950, audio circuit 960, and Wi-Fi module 970 are respectively connected to the processor 980; the power supply 990 provides power to the entire electronic device 10.

[0035] Specifically, the RF circuit 910 is used to transmit and receive signals; the memory 920 is used to store data instruction information; the input unit 930 is used to input information, and may specifically include a touch panel 931 and other input devices 932 such as operation buttons; the display unit 940 may include a display panel 941, etc.; the sensor 950 includes infrared sensors, laser sensors, etc., used to detect user proximity signals, distance signals, etc.; the speaker 961 and the microphone 962 are connected to the processor 980 through the audio circuit 960 for transmitting and receiving sound signals; the Wi-Fi module 970 is used to receive and transmit Wi-Fi signals; and the processor 980 is used to process the data information of the electronic device. For specific structural features of the electronic device, please refer to the relevant descriptions in the above embodiments; detailed descriptions will not be provided here.

[0036] The structure of the display assembly will be described in detail below. Please refer to [link / reference]. Figure 5 , Figure 5 This is a schematic diagram of a display screen assembly according to an embodiment of the present application. The display screen assembly 200 in this embodiment includes a flexible display screen 210 and a support member 220. The support member 220 is connected to the non-light-emitting side of the flexible display screen 210 and is stacked on top of the flexible display screen 210. The support member 220 is used to support the flexible display screen 210.

[0037] Please refer to the following: Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the overall structure of one embodiment of the support component of this application. Figure 7 yes Figure 6The embodiment shows a cross-sectional view of the support member at BB. The support member 220 in this embodiment includes a first support layer 221 and a second support layer 222 stacked together. The first support layer 221 has a first bending area 2210, and the first bending area 2210 has a plurality of first through holes 2211 arranged in a matrix. The second support layer 222 has a second bending area 2220, which is disposed opposite to the first bending area 2210. The second bending area 2220 has a plurality of second through holes 2221 arranged in a matrix.

[0038] Optionally, the cross-sectional dimension of the second through hole 2221 along the circumferential direction is larger than the cross-sectional dimension of the first through hole 2211 along the circumferential direction. The cross-sectional shape of the second through hole 2221 and the first through hole 2211 can be circular, elliptical, rhomboid, racetrack-shaped, etc. Taking the example that both the second through hole 2221 and the first through hole 2211 are circular, the diameter of the second through hole 2221 is larger than the diameter of the first through hole 2211. If it is another shape, the area of ​​the cross-sectional shape of the second through hole 2221 can be larger than the area of ​​the cross-sectional shape of the first through hole 2211.

[0039] The side of the first support layer 221 facing away from the second support layer 222 is used to bond with the flexible display screen 210. The purpose of this design is that since the second support layer 222 is not bonded to the flexible display screen 210, its second through hole 2221 can be formed by machining, and the hole diameter can be larger (to improve processing efficiency and reduce processing cost). However, since the first support layer 221 is used to bond with the flexible display screen 210, the hole diameter needs to be smaller. Therefore, high-precision processing methods such as laser or etching are required to form the first through hole 2211.

[0040] Optionally, the porosity of the second bending region 2220 of the second support layer 222 can be greater than the porosity of the first bending region 2210 of the first support layer 221. The material of the second support layer 222 can be selected from metals, alloys, or carbon fibers, such as stainless steel, aluminum alloys, and magnesium alloys. The thickness of the second support layer 222 can be greater than the thickness of the first support layer 221. The material of the first support layer 221 can also be selected from metals, alloys, or carbon fibers.

[0041] Optionally, please refer to Figure 8 , Figure 8This is a cross-sectional structural diagram of another embodiment of the support member of this application. Unlike the previous embodiment, the support member 220 in this embodiment also includes a third support layer 223. The third support layer 223 is disposed on the side of the second support layer 222 away from the first support layer 221. The third support layer 223 is provided with a third bending area 2230. The third bending area 2230 is disposed opposite to the second bending area 2220. The third bending area 2230 is provided with a plurality of third through holes 2231 arranged in a matrix. The cross-sectional dimension of the third through hole 2231 along the circumferential direction is smaller than the cross-sectional dimension of the second through hole 2221 along the circumferential direction.

[0042] The cross-sectional shape of the third through hole 2231 can be circular, elliptical, rhomboid, or racetrack-shaped, etc. Taking the case where both the second through hole 2221 and the third through hole 2231 are circular, the diameter of the second through hole 2221 is larger than the diameter of the third through hole 2231. If other shapes are used, the area of ​​the cross-sectional shape of the second through hole 2221 can be larger than the area of ​​the cross-sectional shape of the third through hole 2231. In one embodiment, the second through hole 2221 can be a lattice structure with a lattice hole diameter of φ0.5~2mm and a hole spacing of 1~5mm. The lattice holes are staggered to distribute stress and prevent breakage during bending.

[0043] Similar to the first support layer 221 in the aforementioned embodiments, the aperture of the third through-hole 2231 needs to be smaller. Therefore, a high-precision processing method such as laser or etching is required to form the third through-hole 2231. The opening ratio of the second bending region 2220 of the second support layer 222 can be greater than the opening ratio of the third bending region 2230 of the third support layer 223. The material of the third support layer 223 can be selected from metals, alloys, or carbon fibers, such as stainless steel, aluminum alloys, and magnesium alloys. The thickness of the second support layer 222 can be greater than the thickness of the first support layer 221 and the third support layer 223.

[0044] Optionally, in one embodiment, the first support layer 221, the second support layer 222, and the third support layer 223 are all made of carbon fiber material, and the fiber orientations between adjacent support layers are perpendicular to each other.

[0045] In both of the aforementioned embodiments, the bending area is a strip-shaped structure, which can be a corresponding Figure 9 For the bent structure form, please refer to [the relevant documentation / reference]. Figure 9 , Figure 9 This is a structural diagram of a U-shaped folding flexible display screen, wherein the bending areas of the support member 220 (including the first bending area of ​​the first support layer, the second bending area of ​​the second support layer, and the third bending area of ​​the third support layer) correspond to... Figure 9 The bending area W1 of the U-shaped folding screen.

[0046] Furthermore, with the development of hinge technology (i.e., the hinge assembly 130 in this embodiment), the bending area of ​​the folding screen also has a teardrop-shaped structure. Please refer to [link / reference]. Figure 10 , Figure 10 This is a structural diagram of a waterdrop-shaped folding flexible display screen. The waterdrop-shaped folding screen includes an inner bending area W2 and an outer bending area W3. Due to the addition of the outer bending area W3, the gap J1 between the displays in the combined state can be made smaller, resulting in a stronger overall performance.

[0047] Optionally, please refer to the following as well. Figure 11 and Figure 12 , Figure 11 This is a schematic diagram of the overall structure of another embodiment of the support component of this application. Figure 12 yes Figure 11 The cross-sectional view of the support member at CC in the embodiment shows that the first bending area of ​​the first support layer 221, the second bending area of ​​the second support layer 222, and the third bending area of ​​the third support layer 223 in this embodiment all include two parallel bending bands (D1, D2), which correspond to the two planar support areas of the teardrop-shaped bending structure. Figure 10 The connection between the middle P1 and P2 and the teardrop-shaped bending area (i.e., the inner bending area W2) (i.e., the outer bending area W3), that is, the two bending zones D1 and D2 correspond to the two outer bending areas W3 respectively.

[0048] This application uses an example where the first, second, and third support layers are all made of carbon fiber. Conventional solutions involve laser-drilling holes in the overall thickness of the support component. Since this requires simultaneously processing the carbon fiber filaments of the surface, intermediate, and bottom layers (three layers thick), the processing time is very long. However, in this application's solution, a larger hole is pre-drilled in the support layer (second support layer), which does not need to contact the flexible display screen. Then, using fine processing methods such as laser or etching, only the surface carbon fiber filaments in the surface layers (first and third support layers) need to be drilled, saving significant time. This design is particularly advantageous when there are multiple intermediate layers. Furthermore, by controlling the fiber direction of the intermediate layers and pre-drilling holes, the force required to overcome bending is reduced, thus requiring fewer laser-drilled holes. This significantly reduces processing costs. Large mechanical openings in the middle layer (compared to the small openings in the surface layer) can only be made in the non-surface layer. The reason for choosing the non-surface layer is that the support layer of the surface layer is bonded to the screen. If a large mechanical opening is made in the surface layer, the opening will be visible through the screen. However, if it is made in the non-surface layer, it can be covered by the support layer of the surface layer, which can reduce rigidity without affecting the appearance.

[0049] The support member in this embodiment can be a three-layer or multi-layer structure. Taking a three-layer structure as an example, it includes a surface layer of unidirectional carbon fiber material, a middle layer of unidirectional carbon fiber material, and a bottom layer of unidirectional carbon fiber material. The unidirectional carbon fiber material is one type of composite material, but it can also be other fibers such as glass fiber, bamboo fiber, aramid fiber, polypropylene fiber, and other composite materials. The fiber directions of the surface, middle, and bottom layers are perpendicular to each other, i.e., stacked at 0° / 90° / 0°. The term "unidirectional carbon fiber material" refers to the fact that all the fibers in this layer of carbon fiber material are oriented in the same direction.

[0050] Optionally, the total thickness of the support member in this embodiment can be 0.12–0.2 mm. The thickness of each of the top, middle, and bottom layers can be adjusted as needed and is not limited. The thickness of the middle layer is often greater because the middle layer experiences relatively less stress during bending, thus requiring increased thickness to balance the stress in the X and Y directions (the thickness direction is the Z direction). Furthermore, the top, middle, and bottom layers can also be in various combinations such as five or seven layers, and is also not limited.

[0051] The flexible display support provided in this application embodiment forms through holes of different sizes and processing methods in the support layers of the surface and middle layers. This satisfies the bending requirements of the support and the support requirements of the flexible display, while significantly reducing processing time and costs.

[0052] In addition, this application also provides a method for manufacturing a flexible display screen support; please refer to [link to relevant documentation]. Figure 13 , Figure 13 This is a schematic flowchart of an embodiment of the preparation method of the flexible display support member of this application, wherein the preparation method includes, but is not limited to, the following steps.

[0053] In step S100, through holes are formed in the bending area of ​​the first substrate by machining to prepare a semi-finished product.

[0054] The first substrate can be made of metal, alloy, or carbon fiber, such as stainless steel, aluminum alloy, magnesium alloy, etc., and the machining method can be punching, etc.

[0055] Step S200: The second substrate is bonded to the semi-finished product.

[0056] Specifically, it can be adhesive bonding.

[0057] In step S300, through holes are formed in the bending area on the second substrate using laser engraving.

[0058] The circumferential cross-sectional dimension of the through hole on the second substrate is smaller than that of the through hole on the first substrate.

[0059] Please refer to the relevant description of the aforementioned embodiments for the resulting product structure.

[0060] Please see Figure 14 , Figure 14 This is a schematic flowchart of another embodiment of the method for preparing the flexible display support of this application, wherein the preparation method includes, but is not limited to, the following steps.

[0061] In step S100, through holes are formed in the bending area of ​​the first substrate by machining to prepare a semi-finished product.

[0062] Step S200: The second substrate is bonded to the semi-finished product.

[0063] In step S300, through holes are formed in the bending area on the second substrate using laser engraving.

[0064] The circumferential cross-sectional dimension of the through hole on the second substrate is smaller than that of the through hole on the first substrate.

[0065] Unlike the previous embodiments, the preparation method in this embodiment further includes step S400, attaching a third substrate to the surface of the semi-finished product facing away from the second substrate, and step S500, forming through holes in the bending area of ​​the third substrate using laser engraving. The circumferential cross-sectional dimension of the through hole on the third substrate is smaller than that of the through hole on the first substrate.

[0066] Below, we will take a carbon fiber material as an example for detailed explanation.

[0067] The preferred method is raw yarn production: the raw yarn is produced by dry-jet wet spinning, and the preferred materials are T300 and T700 medium-strength medium modulus materials, or M40 medium-strength high modulus materials can also be selected;

[0068] Prepreg production:

[0069] The carbon fiber precursor is mechanically or ultrasonically unspun to a strength of 15–120 g / m².

[0070] The carbon fiber spread fabric is impregnated with epoxy resin, with a resin content ranging from 30% to 50%.

[0071] The carbon fiber prepreg is packaged (either in rolls or cut into sheets) and stored in a cold storage at a temperature below 5°C before shipment.

[0072] Die cutting and material preparation:

[0073] According to the designed product structure, the surface structure is shaped, and the middle layer (i.e., the second support layer) structure, in addition to being shaped, also needs to have through holes made in the outer bending area (by mechanical processing such as punching).

[0074] Padding:

[0075] Three layers of unidirectional carbon fiber material are selected according to the actual design size of the product, and the fiber angle of each layer is stacked together in a dust-free environment according to the product definition.

[0076] Molding:

[0077] The stacked product from the previous step is placed in the mold using feature positioning or hole positioning methods, and then molded. The molding method can be an autoclave or a hot press.

[0078] Laser-cut mesh (surface opening):

[0079] Laser engraving is used to process the mesh on the surface of the product (i.e., the through holes on the first and third support layers); the laser can be selected in the ultraviolet band, the equipment power is in the range of 10 to 25 watts, and nanosecond / picosecond pulsed laser is used.

[0080] The preparation method in this embodiment, by forming through holes of different sizes and processing methods in two support layers, can significantly reduce processing time and lower processing costs while meeting the bending requirements of the support component and the support requirements of the flexible display screen.

[0081] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A support component for a flexible display screen, characterized in that, The support member includes a first support layer, a second support layer, and a third support layer stacked together. The first support layer has a first bending area with a plurality of first through holes arranged in a matrix within the first bending area. The second support layer has a second bending area opposite to the first bending area with a plurality of second through holes arranged in a matrix within the second bending area. The cross-sectional dimension of the second through holes along the circumferential direction is larger than that of the first through holes along the circumferential direction. The side of the first support layer facing away from the second support layer is used to bond with the flexible display screen. The third support layer is located on the side of the second support layer facing away from the first support layer. The third support layer has a third bending area opposite to the second bending area with a plurality of third through holes arranged in a matrix within the third bending area. The cross-sectional dimension of the third through holes along the circumferential direction is smaller than that of the second through holes along the circumferential direction.

2. The support member according to claim 1, characterized in that, The opening ratio of the second bending zone is greater than that of the first bending zone.

3. The support member according to claim 1, characterized in that, The first support layer, the second support layer, and the third support layer are all made of carbon fiber.

4. The support member according to claim 3, characterized in that, The fiber orientations between adjacent support layers are perpendicular to each other.

5. The support member according to claim 1, characterized in that, The first bending area, the second bending area, and the third bending area each include two parallel bending bands, which correspond to the connection points between the two planar support areas of the teardrop-shaped bending structure and the teardrop-shaped bending area, respectively.

6. A flexible display screen assembly, characterized in that, The flexible display assembly includes a flexible display and a support member as described in any one of claims 1-5, wherein the non-light-emitting side of the flexible display is bonded to the first support layer of the support member.

7. An electronic device, characterized in that, The electronic device includes a housing and the flexible display assembly as described in claim 6; the housing includes a first housing, a second housing, and a pivot assembly; the first housing and the second housing are respectively connected to the pivot assembly, and the first housing and the second housing are rotatable with the pivot assembly; the display assembly is respectively connected to the first housing and the second housing and spans the pivot assembly, and the display assembly is foldable or flattened with the relative rotation of the first housing and the second housing.

8. A method for manufacturing a flexible display screen support, characterized in that, The preparation method includes: Through holes are formed in the bending area of ​​the first substrate by machining to prepare a semi-finished product; The second substrate is bonded to the semi-finished product; Through holes are formed in the bending area on the second substrate using laser engraving; wherein the circumferential cross-sectional dimension of the through hole on the second substrate is smaller than the circumferential cross-sectional dimension of the through hole on the first substrate; A third substrate is attached to the surface of the semi-finished product that is away from the second substrate. Through holes are formed in the bending area on the third substrate using laser engraving; wherein the circumferential cross-sectional dimension of the through hole on the third substrate is smaller than the circumferential cross-sectional dimension of the through hole on the first substrate.

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