Supporting piece, display screen assembly and electronic equipment

Abstract

The utility model provides a supporting piece, a display screen assembly and electronic equipment, the supporting piece is arranged on the backlight side of a flexible display screen, the supporting piece is composed of a fiber material and a high polymer material attached to the fiber material, and fiber materials with different moduli can be selected for different areas of the supporting piece. In some embodiments of the invention, the supporting piece can be divided into the bending part and the supporting part, the modulus of the bending part is different from that of the supporting part, the bending part can be made of a fiber material with lower modulus, and the supporting part can be made of a fiber material with higher modulus. In other embodiments of the invention, a fiber material with relatively high modulus can be selected at the position, corresponding to the dispensing glue or the elastic sheet, of the supporting part.

Description

Technical Field

[0001] Embodiments of the present application relate to the field of display screens, and in particular, to a support member, a display screen assembly, and an electronic device. Background Art

[0002] With the continuous development of display technology, foldable display terminals have gradually become a development trend of future mobile electronic products. A foldable display terminal includes at least: a flexible display screen. The performance of each component will directly affect the performance of the display screen. To maintain the flatness and stiffness of the flexible display screen, there is usually one or more layers of metal as a support member under the screen.

[0003] The existing materials of the support member mainly include metals: stainless steel, copper alloy, titanium alloy, aluminum alloy, which have a large density and a heavy weight. With the increasing requirement of consumers for the portability of electronic devices, there is also a requirement for reducing the weight of the support member. For this reason, the support member can also be made of fiber composite materials, such as carbon fiber, glass fiber, aramid fiber, ceramic fiber and other composite materials, which have a low density and very obvious weight reduction benefits. However, the stiffness of the fiber materials after being compounded with resin is poor, and the thickness needs to be increased for compensation, which is not conducive to the thinness and lightness of the product.

[0004] However, the existing support member cannot meet the requirement of being light and providing reliable support. Summary of the Utility Model

[0005] Embodiments of the present application provide a support member, a display screen assembly, and an electronic device, aiming to solve the problem that the existing support member cannot take into account both lightness and support performance.

[0006] To achieve the above object, the present application adopts the following technical solutions:

[0007] In the first aspect of the present application, a support member is provided. The support member is disposed on the backlight side of the display screen. The support member includes a first fiber composite board and a second fiber composite board connected to each other. The first fiber composite board includes a first part, and the second fiber composite board includes a second part. The first fiber composite board and the second fiber composite board are connected through the first part and the second part. When the display screen is in a flattened state, the first fiber composite board and the second fiber composite board are disposed on the same plane. The material of the first fiber composite board includes: first fibers and a polymer material cured on the first fibers. The material of the second fiber composite board includes: second fibers and a polymer material cured on the second fibers. Wherein, the modulus of the first fibers is greater than the modulus of the second fibers. Thus, different fibers can be used for the first fiber composite board and the second fiber composite board, and the moduli of different fibers are different. In the present application, the modulus of the fibers in the first fiber composite board is greater than the modulus of the fibers in the second fiber composite board. By splicing two boards with different moduli together, the board with a high modulus can be used as a reinforcing board to increase the modulus at specific positions, such as the position of the elastic sheet and the dispensing position, reduce the influence of the elastic sheet under the screen pushing up or the dispensing pulling on the screen, improve the large-area light and shadow effect of the screen, and better protect the display screen. And compared with using high-modulus materials for the entire support member, the amount of high-modulus materials is reduced, and the cost is lowered.

[0008] In an optional implementation manner, through holes are provided on the second part of the second fiber composite board, and a first splicing portion is provided on the first part of the first fiber composite board. The first splicing portion is disposed in the through holes. Thus, a fiber composite board with a relatively high modulus can be provided at the support member corresponding to the position of the elastic sheet and the dispensing position, and the display screen can be better protected.

[0009] In an optional implementation manner, a first splicing groove is provided on the inner side wall of the through hole, and the outer shape of the first splicing portion is adapted to the shape of the first splicing groove. Thus, the connection stability between the first fiber composite board and the second fiber composite board can be improved.

[0010] In an optional implementation manner, the cross-sectional shape of the first splicing groove includes: T-shaped, dovetail groove-shaped, trapezoidal. Thus, the connection stability between the first fiber composite board and the second fiber composite board can be further improved.

[0011] In an optional implementation manner, the first part of the first fiber composite board and the second part of the second fiber composite board are combined together by hot pressing. Thus, the first fiber composite board and the second fiber composite board can be connected into one body, and the connection stability is improved.

[0012] In an alternative implementation, the support member further includes: a third fiber composite board connected to the second fiber composite board; the third fiber composite board includes a third part, and the second fiber composite board further includes a fourth part, and the third fiber composite board and the second fiber composite board are connected through the third part and the fourth part; when the display screen is in a flattened state, the first fiber composite board, the second fiber composite board, and the third fiber composite board are distributed in a direction perpendicular to the thickness direction of the support member, and the second fiber composite board is disposed between the first fiber composite board and the third fiber composite board; when the display screen is in a folded state, the second fiber composite board is in a bent state; wherein, the material of the third fiber composite board includes: a third fiber composite board and a polymer material cured on the third fiber composite board, wherein the modulus of the third fiber composite board is greater than the modulus of the second fiber composite board. Thus, the first fiber composite board and the third fiber composite board have a high modulus. As the support part, they can better resist the module deformation problems caused by the unevenness of the middle frame and the pulling of the dispensing, and improve the large-area light and shadow effect. The second fiber composite board is used for the bending part, which can make the modulus of the bending part less than that of the support part, with a higher elongation at break and better bending performance. Compared with using materials with a high modulus in the whole area, the bending performance is better. Compared with using materials with a low modulus in the whole area, the support effect is better and the large-area light and shadow effect is better. In this way, the bending performance and the support performance of the support member can be balanced.

[0013] In an alternative implementation, the first part of the first fiber composite board, the second part of the second fiber composite board, and the fourth part of the second fiber composite board and the third part of the third fiber composite board are joined together by hot pressing. Thus, the first fiber composite board, the second fiber composite board, and the third fiber composite board can be connected as a whole to improve the connection stability.

[0014] In an alternative implementation, a plurality of through holes are provided in the second fiber composite board. Thus, the bending performance of the second fiber composite board can be improved.

[0015] In an alternative implementation, a second splicing groove is provided on the second part of the second fiber composite board, a second splicing portion is provided on the first part of the first fiber composite board, the outer shape of the second splicing portion is adapted to the shape of the second splicing groove, a third splicing groove is provided on the fourth part of the second fiber composite board, and a fourth splicing portion is provided on the third part of the third fiber composite board, and the outer shape of the fourth splicing portion is adapted to the shape of the third splicing groove. Thus, the connection stability between the first fiber composite board and the second fiber composite board can be improved.

[0016] In an alternative implementation, the longitudinal cross-sectional shapes of the second splicing groove and the third splicing groove include: T-shaped, dovetail groove-shaped, and trapezoidal. Thereby, the splicing part and the splicing groove are prevented from shaking in the horizontal direction, and the connection stability between the first fiber composite board and the second fiber composite board can be further improved.

[0017] In an alternative implementation, the first fiber composite board includes: a first fiber layer, a second fiber layer, and a third fiber layer that are stacked. The fiber direction of the first fiber layer is perpendicular to the fiber direction of the second fiber layer, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the third fiber layer. Thereby, the multi-layer fiber composite board is laminated at different angles, which is beneficial to form a multi-directional distribution of fibers and form a fiber network, so as to meet the mechanical strength requirements of the fiber composite material in different directions and better provide rigid support for the flexible screen.

[0018] In an alternative implementation, the support member further includes: a fourth fiber composite board. When the display screen is in a flattened state, the first fiber composite board and the second fiber composite board are arranged in the same plane, and the fourth fiber composite board and the second fiber composite board are stacked along the thickness direction of the support member. The material of the fourth fiber composite board includes: a fourth fiber and a polymer material cured on the fourth fiber. In some embodiments, the modulus of the fourth fiber composite board is less than the modulus of the first fiber composite board. Thereby, the fourth fiber composite board provides support for the display screen, which is beneficial to maintaining the flatness and stiffness of the screen.

[0019] In an alternative implementation, the first fiber composite board includes: a first fiber layer and a second fiber layer that are stacked. The first fiber layer is adjacent to the fourth fiber composite board, the fiber direction of the first fiber layer is perpendicular to the fiber direction of the fourth fiber composite board, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the first fiber layer. Thereby, the multi-layer fiber composite board is laminated at different angles, which is beneficial to form a multi-directional distribution of fibers and form a fiber network, so as to meet the mechanical strength requirements of the fiber composite material in two directions and better provide rigid support for the flexible screen.

[0020] In an alternative implementation, the fourth fiber composite board, the first fiber composite board, and the second fiber composite board are combined together by hot pressing. Thereby, the connection stability between the first fiber composite board, the second fiber composite board, and the fourth fiber composite board can be improved.

[0021] In an alternative implementation, the first fiber composite board and the second fiber composite board further include: a polymer material, and the modulus of the polymer material in the first fiber composite board is greater than the modulus of the polymer material in the second fiber composite board. In this way, the modulus of the first fiber composite board can be further increased.

[0022] In an alternative implementation, the polymer materials in the first fiber composite board and the second fiber composite board include one or more of epoxy resin and phenolic resin.

[0023] In an alternative implementation, the fibers in the first fiber composite board and the second fiber composite board include one or more of carbon fiber, glass fiber, polyamide fiber, and polyethylene fiber.

[0024] In a second aspect of the present application, a display screen assembly is provided, including: a flexible display screen, and the support member as described above. The support member is disposed on the backlight side of the flexible display screen, and the flexible display screen is connected to the first support layer. Thus, the flexible display screen assembly adopts the above support member, improving the flatness and stiffness of the flexible display screen, and achieving product thinness and lightness while ensuring the support performance, thereby enhancing the user experience.

[0025] In a third aspect of the present application, an electronic device is provided, including: a housing and the display screen assembly as described above. The display screen assembly is connected to the housing. Thus, the electronic device adopts the above display screen assembly, achieving product thinness and lightness while ensuring the support performance, thereby enhancing the user experience.

[0026] An embodiment of the present application provides a support member, a display screen assembly, and an electronic device. The support member is disposed on the backlight side of the flexible display screen. The support member is composed of a fiber material and a polymer material attached to the fiber material. For different regions of the support member, fiber materials with different moduli can be selected. In some embodiments of the present application, the support member can be divided into a bending portion and a support portion. The modulus of the bending portion is different from that of the support portion. A fiber material with a lower modulus can be used for the bending portion, and a fiber material with a higher modulus can be selected for the support portion. In some other embodiments of the present application, at the position where the support portion corresponds to the dispensing or the elastic sheet, a fiber material with a higher modulus can be selected.

[0027] The support member may include at least three fiber layers, enabling the fiber directions of adjacent fiber layers to be perpendicular. In this way, the multi-layer fiber composite boards are laminated at different angles, which is conducive to forming a multi-directional distribution of fibers and forming a fiber network, thereby meeting the mechanical strength requirements of the fiber composite material in different directions and providing better rigid support for the flexible screen.

[0028] In some embodiments, the support member can be divided into two support layers arranged in a laminated manner. One support layer is formed by splicing a plurality of fiber composite boards, and the other support layer is integrally formed. The integrally formed support layer is disposed close to the display screen, which is conducive to improving the flatness of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1Schematic diagram of the disassembly structure of an electronic device provided by an embodiment of the present application;

[0030] Figure 2 Schematic diagram of the structure of an electronic device provided by an embodiment of the present application;

[0031] Figure 3 Schematic diagram of the structure of another electronic device provided by an embodiment of the present application;

[0032] Figure 4 Cross-sectional view of an electronic device provided by an embodiment of the present application;

[0033] Figure 5 Schematic diagram of the structure of a support member;

[0034] Figure 6 Schematic diagram of the structure of a support member provided by an embodiment of the present application;

[0035] Figure 7 Schematic diagram of the structure of a clamping structure provided by an embodiment of the present application;

[0036] Figure 8 Schematic diagram of the structure of another clamping structure provided by an embodiment of the present application;

[0037] Figure 9 For Figure 6 Schematic cross-sectional structure diagram of the support member shown;

[0038] Figure 10 For Figure 6 Schematic laminated structure diagram of the support member shown;

[0039] Figure 11 Schematic diagram of the structure of another support member provided by an embodiment of the present application;

[0040] Figure 12 For Figure 11 Schematic cross-sectional structure diagram of the support member shown;

[0041] Figure 13 For Figure 11 Schematic laminated structure diagram of the support member shown;

[0042] Figure 14 Schematic cross-sectional structure diagram of a support member provided by an embodiment of the present application;

[0043] Figure 15 Schematic cross-sectional structure diagram of another support member provided by an embodiment of the present application. Detailed implementation manners

[0044] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0045] Hereinafter, terms such as "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0046] In addition, in the present application, orientation terms such as "upper", "lower", etc. are defined relative to the orientation of the components shown in the drawings. It should be understood that these directional terms are relative concepts, which are used for relative description and clarification and can change accordingly with the change of the orientation of the components placed in the drawings.

[0047] An embodiment of the present application provides an electronic device. The electronic device may be a product with a display interface such as a tablet computer, a mobile phone, an e-reader, a remote control, a personal computer (PC), a laptop computer, a personal digital assistant (PDA), a vehicle-mounted device, an Internet TV, a wearable device, a television, etc., as well as intelligent display wearable products such as a smart watch and a smart bracelet. The form of the above-mentioned electronic device is not particularly limited in the embodiments of the present application.

[0048] Exemplarily, the electronic device may be a device with a foldable screen, including but not limited to a foldable mobile phone, a foldable tablet computer, etc.

[0049] For the convenience of description, the following embodiments are all exemplified by taking the electronic device as a mobile phone.

[0050] Figure 1 is a schematic diagram of the disassembled structure of the electronic device provided by the embodiment of the present application. As Figure 1 shown, the electronic device 1 includes a display module 10 and a housing (or called a battery cover) 12. The middle frame 11 is located between the display module 10 and the housing 12.

[0051] The display module 10 is used to display images.

[0052] The display module 10, the middle frame 11 and the housing 12 may be respectively disposed on different layers in the thickness direction of the electronic device, and these layers may be parallel to each other. The plane where each layer is located may be called the X-Y plane, and the direction perpendicular to the X-Y plane may be called the Z direction. That is to say, the display module 10, the middle frame 11 and the housing 12 may be distributed in layers in the Z direction.

[0053] The display module 10 may be through such as Figure 1After the shown flexible printed circuit (FPC) passes through the middle frame 11, it is electrically connected to the PCB disposed on the middle frame 11. Thus, the PCB can transmit display data to the display module 10 to control the display module 10 to perform image display.

[0054] The middle frame 11 is located between the display module 10 and the housing 12. The surface of the middle frame 11 away from the display module 10 is used to mount internal components such as a battery, a printed circuit board (PCB), a camera, and an antenna. After the housing 12 is covered with the middle frame 11, the above internal components are located between the housing 12 and the middle frame 11.

[0055] The housing 12 and the middle frame 11 are connected to form a receiving cavity for accommodating the above-mentioned electronic devices such as the PCB, the camera, and the battery. Thus, it is possible to prevent external moisture and dust from invading the receiving cavity and affecting the performance of the above-mentioned electronic devices.

[0056] The embodiments of the present application do not limit the structure of the mobile phone. In some embodiments of the present application, as Figure 2 、 Figure 3 shown, the mobile phone may be a folding screen mobile phone, and the above display module 10 includes a flexible display screen 101.

[0057] Among them, the flexible display screen 101 may be an active matrix organic light emitting diode (AMOLED) display screen.

[0058] As a self-luminous display screen, the AMOLED display screen does not need to be provided with a backlight module (BLM). Therefore, when the substrate of the AMOLED display screen is made of a flexible resin material, such as polyimide (PI) or polyethylene terephthalate (PET), the AMOLED display screen can have the characteristic of being bendable.

[0059] Figure 2 Shown is a structural diagram of a double-screen folding mobile phone. The folding mobile phone includes a first housing 12a, a second housing 12b, a flexible display screen 101, and a rotating shaft mechanism. The flexible display screen 101 can continuously cover the first housing 12a and the second housing 12b. The first housing 12a and the second housing 12b are disposed on both sides of the rotating shaft mechanism and are respectively connected to the rotating shaft mechanism. Under the action of the rotating shaft mechanism, the flexible display screen 101 can also be unfolded and closed.

[0060] Figure 3 Disclosed is a structural diagram of a triple-screen folding mobile phone, and the exemplary folding screen mobile phone is a triple-screen folding mobile phone. The triple-fold screen mobile phone may include a first housing 12a, a second housing 12b, and a third housing 12c, as well as a flexible display screen 101. The flexible display screen 101 may continuously cover the first housing 12a, the second housing 12b, and the third housing 12c. The folding screen mobile phone may further include a first rotating shaft mechanism and a second rotating shaft mechanism.

[0061] The first housing 12a and the second housing 12b are disposed on both sides of the first rotating shaft mechanism and are respectively connected to the first rotating shaft mechanism. The first rotating shaft mechanism is capable of moving so that the first housing 12a and the second housing 12b are folded relative to each other or unfolded relative to each other, realizing the flattening and closing of the flexible display screen 101 disposed on the first housing 12a and the second housing 12b.

[0062] The second housing 12b and the third housing 12c are disposed on both sides of the second rotating shaft mechanism and are respectively connected to the second rotating shaft mechanism. The second rotating shaft mechanism is capable of moving so that the second housing 12b and the third housing 12c are folded relative to each other or unfolded relative to each other, realizing the flattening and closing of the flexible display screen 101 disposed on the second housing 12b and the third housing 12c.

[0063] The foldable electronic device can be unfolded to a flattened state, folded to a closed state, or can also be in an intermediate state between the flattened state and the closed state. The foldable electronic device has at least two states, namely the flattened state and the closed state. In some cases, it may further include a third state, an intermediate state between the flattened state and the closed state. The intermediate state does not have only a unique state and can be any one or more states of the electronic device between the flattened state and the closed state.

[0064] The above Figure 2 and Figure 3 Exemplary is a dual-screen and triple-screen folding electronic device. The foldable electronic device involved in the embodiments of the present application may also be a device with more screens, such as a four-screen folding, a five-screen folding, etc. electronic device.

[0065] The following will be described by taking a dual-screen folding electronic device as an example. Figure 4 It is a cross-sectional view of an electronic device provided by an embodiment of the present application. As Figure 4 shown, in order to protect the flexible display screen 101, the electronic device further includes: a support member 200. The support member 200 is disposed on the backlight side of the flexible display screen 101, and the support member 200 is used to provide reliable support for the flexible display screen 101.

[0066] Among them, the support member can be used for a foldable terminal as a flexible display screen under-screen support structural member. Exemplarily, the support member 200 can be a bamboo book structure.

[0067] like Figure 4 As shown, the housing 12 includes: a first housing 12a, a second housing 12b, and a hinge mechanism 13 located between the first housing 12a and the second housing 12b. The first housing 12a and the second housing 12b can rotate along the axis OO of the hinge mechanism 13 respectively, thereby driving the display screen 102 to fold or unfold.

[0068] For example, when the angle α between the first shell 12a and the second shell 12b is 0°, the flexible display screen 101 is in a folded state.

[0069] Alternatively, when the angle α between the first shell 12a and the second shell 12b increases to 180°, the flexible display screen 101 is in an unfolded state.

[0070] The flexible display screen 101 includes: a first non-bending area opposite to the first shell 12 a , a second non-bending area opposite to the second shell 12 b , and a bending area opposite to the hinge mechanism 13 .

[0071] The support member 200 is disposed on the backlight side of the flexible display screen 101, that is, between the flexible display screen 101 and the housing 12. In some embodiments, the support member 200 includes: a first support portion 201 connected to the first non-bending area, a second support portion 202 connected to the second non-bending area, and a bending portion 203 connected to the bending area.

[0072] The embodiment of the present application does not limit the structure of the support member. Figure 5 This is a schematic diagram of the structure of a support. Figure 5 , the support member 200 includes a fiber composite plate.

[0073] In some examples, the material of the fiber composite board can be a fiber composite material, such as carbon fiber, glass fiber, aramid fiber, ceramic fiber, etc., which is formed by winding, molding or pultrusion with a matrix material.

[0074] Compared with the metal layer, the fiber composite board is lighter, but the fiber composite board has poor rigidity. When the flexible display screen is repeatedly bent or unfolded, the opposite sides of the flexible display screen will be continuously subjected to inward compression force and outward tension force. This may easily lead to insufficient flatness and rigidity of the flexible display screen after long-term use. Among them, rigidity is called elastic modulus, which refers to the ability of a material or structure to resist elastic deformation when subjected to force. The larger the elastic modulus or rigidity, the smaller the elastic deformation, and the smaller the elastic modulus or rigidity, the larger the elastic deformation.

[0075] In some embodiments, compensating for stiffness by increasing the thickness of the support member is not conducive to the thinness and lightness of the product.

[0076] Therefore, an improved support member is provided in an embodiment of the present application. Figure 6 The following is a schematic structural diagram of a support member provided in an embodiment of the present application. As Figure 6 shown, the support member 200 at least includes: a first fiber composite board 2001 and a second fiber composite board 2002 that are connected. Wherein, the first fiber composite board 2001 includes a first portion 21, the second fiber composite board 2002 includes a second portion 22, and the first fiber composite board 2001 and the second fiber composite board 2002 are connected through the first portion 21 and the second portion 22.

[0077] When the display screen is in a flattened state, the first fiber composite board 2001 and the second fiber composite board 2002 are arranged in the same plane. Both the first fiber composite board 2001 and the second fiber composite board 2002 can be flat fiber composite boards.

[0078] For the support member provided in the embodiment of the present application, the first fiber composite board 2001 and the second fiber composite board 2002 adopt fiber composite materials. The fiber composite materials have high strength and are relatively light in mass compared to metal materials such as stainless steel. They can provide good rigid support for the flexible screen while having a high weight reduction benefit, which is conducive to improving the product competitiveness of the foldable terminal.

[0079] The fiber composite board of the present application includes a fiber skeleton and a polymer material cured on the fiber skeleton. In the embodiment of the present application, the polymer material includes resin and / or rubber. In the present application, the specific types of resin and rubber are not particularly limited, as long as they can meet the application requirements of the electronic device and cooperate with the fiber to provide sufficient rigid support for the flexible screen. Exemplarily, the polymer material includes, but is not limited to, one or more of epoxy resin, phenolic resin, amino resin, unsaturated polyester, silicone ether resin, polyolefin, polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, and polysulfone. Among them, in order to minimize the overall weight of the flexible screen support structure, a polymer material with a relatively small mass can be selected on the premise of meeting mechanical support. The polymer material can be impregnated and cured on the fiber composite board by a solution impregnation method or a hot melt method, combined with a hot pressing process.

[0080] In the embodiments of the present application, the fibers in the fiber composite board are continuous fibers, which may specifically include but are not limited to one or more of glass fibers, carbon fibers, aramid fibers, aluminum oxide fibers, ultra-high molecular weight polyethylene fibers, and poly(p-phenylene benzobisoxazole) fibers. Among them, ultra-high molecular weight polyethylene fibers refer to fibers spun from polyethylene with a molecular weight > 1 million. The fiber composite board can be woven from one type of fiber or can be woven from two or more types of fibers. Among them, mixed weaving can integrate the performance advantages of multiple fibers.

[0081] The present application does not limit the mass content of the fibers in the fiber composite material. By way of example, the mass content of the fibers in the fiber composite material can be 10% - 80%. The fiber content in the fiber composite material can be adjusted according to specific rigid support requirements and in combination with the mechanical properties of the selected resin or rubber, etc. Generally, the more the fiber content, the relatively lighter the overall weight of the fiber composite material, which is more conducive to weight reduction. In some embodiments, considering both the rigid support performance and the weight reduction requirements, the mass content of the fibers in the fiber composite material is 30% - 70%.

[0082] Among them, the first fiber composite board 2001 ( Figure 9 the fiber layers 211a, 212a, 213a therein) includes: a first fiber layer and a high molecular material cured on the first fiber layer. The second fiber composite board 2002 ( Figure 9 the fiber layers 211b, 212b, 213b therein) includes: a second fiber layer and a high molecular material cured on the second fiber layer.

[0083] Among them, different fibers can be used for the first fiber composite board and the second fiber composite board, and the moduli of different fibers are different. By way of example, the modulus of the first fiber composite board can be made greater than the modulus of the second fiber composite board.

[0084] In the embodiments of the present application, two plates with different moduli can be spliced together. The high-modulus plate can be used as a reinforcing plate to increase the modulus at specific positions, such as the position of the elastic piece and the dispensing position, reduce the influence of the elastic piece under the screen pushing up or the dispensing pulling on the screen, improve the large-surface light and shadow effect of the screen, and can better protect the display screen. And compared with using high-modulus materials for the entire support, the amount of high-modulus materials used is reduced, and the cost is lowered.

[0085] The embodiments of the present application do not limit the connection method between the first flat plate and the second flat plate. In some embodiments, the first part 21 of the first fiber composite board 2001 and the second part 22 of the second fiber composite board 2002 can be connected together by hot pressing.

[0086] In some embodiments, through holes are provided in the second part 22 of the second fiber composite board 2002, and the first part 21 of the first fiber composite board 2001 includes a splicing part (which can be called the first splicing part), and this splicing part is arranged in the through hole.

[0087] To improve the connection stability between the first fiber composite board 2001 and the second fiber composite board 2002, a clamping structure can also be provided between the first fiber composite board 2001 and the second fiber composite board 2002. Exemplarily, this clamping structure includes: a splicing groove (which can be called the first splicing groove). For example, a splicing groove is provided on the inner side wall of the through hole, and the outer shape of the splicing part is adapted to the shape of the splicing groove. Or, a splicing part is provided on the inner side wall of the through hole, and a splicing groove is provided on the outer side wall of the first fiber composite board 2001, and the outer shape of the splicing part is adapted to the shape of the splicing groove.

[0088] The embodiment of the present application does not limit the shape of this splicing groove. In some embodiments, the cross-sectional shape of the splicing groove includes: a rectangle, a dovetail groove shape, a trapezoid.

[0089] In some embodiments, as Figure 7 shown, the first part 21 of the first fiber composite board 2001 includes a main body part 2001a and a splicing part 2001b connected to the main body part 2001a. This splicing part 2001b is a square protrusion. Correspondingly, the splicing groove can be a square splicing groove.

[0090] In some embodiments, as Figure 8 shown, the splicing part 2001b can be a T-shaped protrusion. Correspondingly, the splicing groove can be a T-shaped splicing groove.

[0091] In some embodiments, the splicing part can be a trapezoidal protrusion. Correspondingly, the splicing groove can be a trapezoidal splicing groove.

[0092] In some embodiments, the splicing part can be a dovetail-shaped protrusion. Correspondingly, the splicing groove can be a dovetail-shaped splicing groove.

[0093] In some embodiments, the splicing part can be a conical protrusion. Correspondingly, the splicing groove can be a conical splicing groove.

[0094] In some embodiments, the splicing part can be an arc-shaped protrusion. Correspondingly, the splicing groove can be an arc-shaped splicing groove.

[0095] The shape of the splicing part of the first fiber composite board 2001 provided by the embodiment of the present application matches the shape of the splicing groove of the second fiber composite board 2002. Among them, the larger the contact area between the splicing part and the splicing groove, the more conducive it is to increasing the bonding force of the contact surface. For example, the bonding force of the interface of the dovetail-shaped protrusion and the dovetail-shaped splicing groove can be slightly greater than the bonding force of the interface of the square protrusion and the square splicing groove. By adjusting the shape of the splicing groove, the inner wall area is increased, the connection stability is improved, and the separation risk of the plate body is reduced.

[0096] In the embodiment of the present application, there are no restrictions on the fiber direction and the number of layers of the fiber composite board in each flat plate. In the embodiment of the present application, the fiber weaving method of each fiber composite board can be unidirectional weaving or multi-directional weaving. That is, the fiber composite board can be fiber unidirectional cloth or fiber woven cloth. Fiber unidirectional cloth, that is, fiber single-axial weaving, refers to a textile fabric that has a large number of textile yarns in one direction (usually the warp direction, and there are also weft unidirectional fabrics), and only a small amount and usually thin yarns in the other direction. As a result, almost all the strength of the cloth is in one direction. Fiber woven cloth refers to fiber multi-axial weaving, with a large number of textile yarns in multiple directions, and the strength of the final cloth is distributed in multiple axial directions. For example, warp and weft bi-axial weaving, that is, 0° / 90° weaving, refers to the fiber distribution of the fiber layer being bi-axial, and the angles of the two axes are 0° and 90° respectively, and the included angle between the fibers in the two axes is 90°. Another example is 45° weaving (i.e., +45° / -45°), which refers to the fiber distribution of the fiber layer being bi-axial, and the angles of the two axes are +45° and -45° respectively, and the included angle between the fibers in the two axes is 90 degrees.

[0097] In this embodiment, the fiber composite board can include only one fiber layer or multiple (two or more) fiber layers.

[0098] In some embodiments, as Figure 10 shown, the fiber composite board of the support part has three layers: fiber layer 211 (including Figure 9 fiber layer 211a and fiber layer 211b in Figure 9 ), fiber layer 212 (including Figure 9 fiber layer 212a and fiber layer 212b in

[0099] ) and fiber layer 213 (including

[0100] The lamination direction of the three-layer fiber composite board can be any angle within the range of 0° - 90°. Among them, laminating the multi-layer fiber composite board at different angles is beneficial to forming a multi-directional distribution of fibers and forming a fiber network, so as to meet the mechanical strength requirements of the fiber composite material in different directions and better provide rigid support for the flexible screen.

[0101] In some embodiments, the fiber direction of the fiber layer 211 is perpendicular to the fiber direction of the fiber layer 212, and the fiber direction of the fiber layer 212 is perpendicular to the fiber direction of the fiber layer 213. For example, the three-layer fiber unidirectional cloth can be laminated at different angles, such as Figure 10 As shown, the fiber directions of the fiber layer 211 and the fiber layer 213 are 0°, and the fiber direction of the fiber layer 212 is 90°. In this application, the 0° direction is the x direction in the figure, and the 90° direction is the y direction in the figure.

[0102] In this way, the fibers can be continuously distributed in multiple directions, improving the strength of the fiber composite material in each direction and enhancing the overall mechanical properties of the fiber composite material.

[0103] In the above embodiments, the plate body with a higher modulus can be used as the reinforcing plate. In some other embodiments, the plate body with a lower modulus can be used for the bending part.

[0104] For example, as Figure 11 shown, the support member includes: a first fiber composite board 2001, a second fiber composite board 2002, and a third fiber composite board 2003 that are connected to each other. The first fiber composite board 2001 includes a first part 21, the second fiber composite board 2002 includes a second part 22, and the first fiber composite board 2001 and the second fiber composite board 2002 are connected through the first part 21 and the second part 22. The third fiber composite board 2003 includes a third part 23, the second fiber composite board 2002 further includes a fourth part 24, and the third fiber composite board 2003 and the second fiber composite board 2002 are connected through the third part 23 and the fourth part 24.

[0105] Among them, the third fiber composite board 2003 includes: a bending part. When the display screen is in a flattened state, the first fiber composite board 2001, the second fiber composite board 2002, and the third fiber composite board 2003 are distributed in a direction perpendicular to the thickness direction of the support member, and the second fiber composite board is arranged between the first fiber composite board and the third fiber composite board.

[0106] When the display screen is in a folded state, the second fiber composite board 2002 is in a bent state.

[0107] Among them, the first fiber composite board 2001 includes: a first fiber layer ( Figure 12The fiber layers 211a, 212a, 213a) in it and the polymer material cured on the first fiber layer. The second fiber composite board 2002 includes: a second fiber layer ( Figure 12 The fiber layers 211b, 212b, 213b) in it and the polymer material cured on the second fiber layer. The third fiber composite board 2003 includes: a third fiber layer ( Figure 12 The fiber layers 211c, 212c and 213c) in it and the polymer material cured on the third fiber layer, wherein the modulus of the third fiber composite board is greater than that of the second fiber composite board.

[0108] In this embodiment, the first fiber composite board 2001 and the third fiber composite board 2003 have high moduli. As the support parts, they can better resist the module deformation problems caused by the unevenness of the middle frame and the pulling of the dispensing, and improve the large-area light and shadow effect. The second fiber composite board 2002 is used for the bending part, which can make the modulus of the bending part less than that of the support part, with a higher elongation at break and better bending performance. Compared with using materials with high moduli in the whole area, the bending performance is better; compared with using materials with low moduli in the whole area, the support effect is better and the large-area light and shadow effect is better. In this way, the bending performance and the support performance of the support can be taken into account.

[0109] In some embodiments, a plurality of through holes 2000 are provided on the second fiber composite board 2002, which can further improve the bending performance of the support.

[0110] The embodiments of the present application do not limit the connection manner of the first fiber composite board 2001, the second fiber composite board 2002 and the third fiber composite board 2003. By way of example, the first part 21 of the first fiber composite board 2001 and the second part 22 of the second fiber composite board 2002, and the fourth part 24 of the second fiber composite board 2002 and the third part 23 of the third fiber composite board 2003 are combined together by hot pressing. The first fiber composite board 2001, the second fiber composite board 2002 and the third fiber composite board 2003 are combined together by hot pressing. Among them, during the hot pressing process, different plates can be connected together through the flow and curing of the polymer material to form a whole fiber composite board.

[0111] To improve the connection stability between the first fiber composite board 2001 and the second fiber composite board 2002, as well as between the second fiber composite board 2002 and the third fiber composite board 2003, a snap - fit structure can also be provided between the first part 21 of the first fiber composite board 2001 and the second part 22 of the second fiber composite board 2002, and between the fourth part 24 of the second fiber composite board 2002 and the third part 23 of the third fiber composite board 2003. Exemplarily, the snap - fit structure includes: a splicing groove and a splicing part, and the outer shape of the splicing part is adapted to the shape of the splicing groove. For example, the second part 22 of the second fiber composite board 2002 includes a splicing groove (which can be called the second splicing groove), the first part 21 of the first fiber composite board 2001 includes a splicing part (which can be called the second splicing part), the fourth part 24 of the second fiber composite board 2002 includes a splicing groove (which can be called the third splicing groove), and the third part 23 of the third fiber composite board 2003 includes a splicing part (which can be called the fourth splicing part).

[0112] The embodiments of the present application do not limit the structures of the splicing groove and the splicing part, and reference can be made to the descriptions of the splicing groove and the splicing part in the above - mentioned embodiments, which will not be elaborated here.

[0113] The embodiments of the present application do not limit the fiber direction and the number of layers of the fiber composite board in each flat plate. In some embodiments, as Figure 12 shown, the fiber composite board of the support part has three layers: the fiber layer 211 (including Figure 12 the fiber layers 211a, 211b, and 211c in Figure 12 ), the fiber layer 212 (including Figure 12 the fiber layers 212a, 212b, and 212c in

[0114] ), and the fiber layer 213 (including Figure 13 the fiber layers 213a, 213b, and 213c in

[0115] ). To better enhance the mechanical strength of the fiber composite material and improve the strength in all directions of the fiber composite material, the three - layer fiber composite board can be laminated at different angles (multi - angles). Figure 13 As

[0116] shown, the three - layer fiber composite board can be a multi - layer fiber unidirectional cloth laminated at different angles, that is, each fiber composite board is a fiber unidirectional cloth. For example, the three - layer fiber unidirectional cloth can be laminated at different angles. As shown, the fiber direction of the fiber layer 211 and the fiber layer 213 is 0°, and the fiber direction of the fiber layer 212 is 90°. In this way, the fibers can be continuously distributed in multiple directions, improving the strength in all directions of the fiber composite material and enhancing the overall mechanical properties of the fiber composite material. In the present application, the 0° direction is the x - direction in the figure, and the 90° direction is the y - direction in the figure.In the above embodiments, the support member is formed by hot pressing after splicing multiple flat plates. However, there are splicing grooves between the flat plates, and it is easy to be uneven at the positions of the splicing grooves, and it is easy to present light and shadow after being attached to the flexible display screen, which affects the use. In order to improve the flatness of the support member. In some embodiments, as Figure 14 shown, a fourth fiber composite board 2004 can also be provided on the side of the above support member close to the display screen. The material of the fourth fiber composite board 2004 includes: a fourth fiber layer 214 and a polymer material cured on the fourth fiber layer 214. Among them, the modulus of the fourth fiber layer 214 is less than the modulus of the first fiber layer 211. The fourth fiber composite board 2004 can be formed by hot pressing a whole layer of fiber composite board and a polymer material, and there is no splicing groove, which improves the flatness of the support member.

[0117] For example, in some embodiments, as Figure 14 shown, the support member includes: a first fiber composite board 2001, a second fiber composite board 2002, and a fourth fiber composite board 2004. The first fiber composite board 2001 and the second fiber composite board 2002 are spliced and then connected to the fourth fiber composite board 2004.

[0118] The first fiber composite board 2001 includes: a first fiber layer ( Figure 14 the fiber layer 211a and fiber layer 212a in ) and a polymer material cured on the first fiber layer. The second fiber composite board 2002 includes: a second fiber layer ( Figure 14 the fiber layer 211b and fiber layer 212b in ) and a polymer material cured on the second fiber layer. The material of the fourth fiber composite board 2004 includes: a fourth fiber layer 214 and a polymer material cured on the fourth fiber layer 214.

[0119] The embodiments of the present application do not limit the number of layers of the fiber composite board in each plate body. For example, as Figure 14 shown, the support member includes three layers of fiber composite boards. The first fiber composite board 2001 includes two layers of fiber layers, the second fiber composite board 2002 includes two layers of fiber layers, and the fourth fiber composite board 2004 includes one layer of fiber layer.

[0120] Among them, the first fiber composite board 2001 includes: a fiber layer 211a and a fiber layer 212a arranged in a stacked manner. The second fiber composite board 2002 includes: a fiber layer 211b and a fiber layer 212b arranged in a stacked manner. The fiber layer 211a and the fiber layer 211b are arranged in the same plane and spliced into a fiber layer 211. The fiber layer 212a and the fiber layer 212b are arranged in the same plane and spliced into a fiber layer 212. The fourth fiber composite board 2004 includes: a fiber layer 214. The fiber layer 211, the fiber layer 212, and the fiber layer 214 are arranged in a stacked manner.

[0121] In this embodiment, both the first fiber composite board 2001 and the second fiber composite board 2002 adopt a double-layer fiber composite board structure, and the fourth fiber composite board 2004 adopts a single-layer structure. In other embodiments, it is also possible that the first fiber composite board 2001 includes one layer of fiber composite board, the second fiber composite board 2002 includes one layer of fiber composite board, and the fourth fiber composite board includes two layers of fiber composite board. All of these fall within the protection scope of this application.

[0122] The fiber orientation of each fiber layer can refer to the description of the above embodiments and will not be elaborated here.

[0123] In other embodiments, as Figure 15 shown, the support member includes: a first fiber composite board 2001, a second fiber composite board 2002, a third fiber composite board 2003, and a fourth fiber composite board 2004. The first fiber composite board 2001, the second fiber composite board 2002, and the third fiber composite board 2003 are spliced and then connected to the fourth fiber composite board 2004.

[0124] Among them, the first fiber composite board 2001 includes: a first fiber layer ( Figure 15 the fiber layers 211a and 212a in Figure 15 ) and a polymer material cured on the first fiber layer. The second fiber composite board 2002 includes: a second fiber layer ( Figure 15 the fiber layers 211b and 212b in

[0125] This application embodiment does not limit the number of layers of fiber composite boards in each plate body. By way of example, as Figure 15 shown, the support member includes three fiber layers. The first fiber composite board 2001 includes two fiber layers, the second fiber composite board 2002 includes two fiber layers, the third fiber composite board 2003 includes two fiber layers. The first fiber composite board 2001, the second fiber composite board 2002, and the third fiber composite board 2003 are arranged in the same plane, and the fourth fiber composite board 2004 includes one fiber layer.

[0126] Among them, the first fiber composite board 2001 includes: a fiber layer 211a and a fiber layer 212a arranged in a stack; the second fiber composite board 2002 includes: a fiber layer 211b and a fiber layer 212b arranged in a stack; the third fiber composite board 2003 includes: a fiber layer 211c and a fiber layer 212c arranged in a stack. The fiber layer 211a, the fiber layer 211b, and the fiber layer 211c are arranged in the same plane and spliced into a fiber layer 211. The fiber layer 212a, the fiber layer 212b, and the fiber layer 212c are arranged in the same plane and spliced into a fiber layer 212. The fourth fiber composite board 2004 includes: a fiber layer 214. The fiber layer 211, the fiber layer 212, and the fiber layer 214 are arranged in a stack.

[0127] In this embodiment, both the first fiber composite board 2001 and the second fiber composite board 2002 adopt a double-layer fiber composite board structure, and the fourth fiber composite board 2004 adopts a single-layer fiber composite board structure. In other embodiments, it is also possible to make the first fiber composite board 2001, the second fiber composite board 2002, and the third fiber composite board 2003 adopt single-layer fiber composite boards, and the fourth fiber composite board includes two layers of fiber composite boards. These all fall within the protection scope of this application.

[0128] The fiber orientation of each layer of the fiber composite board can refer to the description of the above embodiment and will not be elaborated here.

[0129] The embodiment of this application provides a support member, a display screen assembly, and an electronic device. Among them, the support member is arranged on the backlight side of the flexible display screen. The support member is composed of a fiber material and a polymer material attached to the fiber material. For different regions of the support member, fiber materials with different moduli can be selected. In some embodiments of this application, the support member can be divided into a bending part and a supporting part. The modulus of the bending part is different from that of the supporting part. The bending part can adopt a fiber material with a lower modulus, and the supporting part can select a fiber material with a higher modulus. In other embodiments of this application, at the position where the supporting part corresponds to the dispensing or the elastic sheet, a fiber material with a higher modulus can be selected.

[0130] The support member can include at least three layers of fiber layers, and the fiber directions of adjacent fiber layers can be perpendicular. In this way, the multi-layer fiber composite boards are laminated at different angles, which is beneficial to making the fibers form a multi-directional distribution and form a fiber network, so as to meet the mechanical strength requirements of the fiber composite material in different directions and better provide rigid support for the flexible screen.

[0131] In some embodiments, the support member can be divided into two support layers arranged in a stack. One of the support layers is formed by splicing multiple fiber composite boards, and the other support layer is integrally formed. The integrally formed support layer is arranged close to the display screen, which is beneficial to improving the flatness of the display screen.

[0132] As described above, it is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A support member, characterized in that, The support member is disposed on the backlight side of the display screen. The support member includes a first fiber composite board and a second fiber composite board connected to each other. The first fiber composite board includes a first portion, and the second fiber composite board includes a second portion. The first fiber composite board and the second fiber composite board are connected through the first portion and the second portion. When the display screen is in a flattened state, the first fiber composite board and the second fiber composite board are disposed in the same plane. The modulus of the fibers in the first fiber composite board is greater than the modulus of the fibers in the second fiber composite board.

2. The support member according to claim 1, characterized in that, A through hole is provided on the second portion of the second fiber composite board. The first portion of the first fiber composite board includes a first splicing portion, and the first splicing portion is disposed in the through hole.

3. The support member according to claim 2, characterized in that, A first splicing groove is provided on the inner side wall of the through hole, and the outer shape of the first splicing portion is adapted to the shape of the first splicing groove.

4. The support according to claim 3, characterized in that, The cross-sectional shape of the first splicing groove includes: T-shaped, dovetail groove-shaped, trapezoidal.

5. The support member according to claim 4, wherein The first portion of the first fiber composite board and the second portion of the second fiber composite board are joined together by hot pressing.

6. The support member according to claim 1, wherein, The support member further includes a third fiber composite board connected to the second fiber composite board. The third fiber composite board includes a third portion, and the second fiber composite board further includes a fourth portion. The third fiber composite board and the second fiber composite board are connected through the third portion and the fourth portion. When the display screen is in a flattened state, the first fiber composite board, the second fiber composite board, and the third fiber composite board are distributed in a direction perpendicular to the thickness direction of the support member, and the second fiber composite board is disposed between the first fiber composite board and the third fiber composite board. When the display screen is in a folded state, the second fiber composite board is in a bent state. Wherein, the modulus of the fibers in the third fiber composite board is greater than the modulus of the fibers in the second fiber composite board.

7. The support according to claim 6, wherein The first portion of the first fiber composite board and the second portion of the second fiber composite board, and the fourth portion of the second fiber composite board and the third portion of the third fiber composite board are all joined together by hot pressing.

8. The support member according to claim 6 or 7, characterized in that, The second portion of the second fiber composite board includes a second splicing groove. The first portion of the first fiber composite board includes a second splicing portion, and the outer shape of the second splicing portion is adapted to the shape of the second splicing groove. The fourth portion of the second fiber composite board includes a third splicing groove, and the third portion of the third fiber composite board includes a fourth splicing portion, and the outer shape of the fourth splicing portion is adapted to the shape of the third splicing groove.

9. The support member according to any one of claims 1-8, characterized in that, The first fiber composite board includes a first fiber layer, a second fiber layer, and a third fiber layer stacked. The fiber direction of the first fiber layer is perpendicular to the fiber direction of the second fiber layer, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the third fiber layer.

10. The support member according to any one of claims 1-8, characterized in that, The support member further includes: a fourth fiber composite board. When the display screen is in a flattened state, the first fiber composite board and the second fiber composite board are arranged in the same plane, and the fourth fiber composite board and the second fiber composite board are stacked along the thickness direction of the support member.

11. The support according to claim 10, wherein The first fiber composite board includes: a first fiber layer and a second fiber layer stacked. The first fiber layer is adjacent to the fourth fiber composite board. The fiber direction of the first fiber layer is perpendicular to the fiber direction of the fourth fiber composite board, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the first fiber layer.

12. The support according to claim 10 or 11, characterized in that, The fourth fiber composite board, the first fiber composite board, and the second fiber composite board are combined together by hot pressing.

13. The support member according to any one of claims 1-12, characterized in that, The first fiber composite board and the second fiber composite board further include: a polymer material. The modulus of the polymer material in the first fiber composite board is greater than the modulus of the polymer material in the second fiber composite board.

14. The support member according to any one of claims 1-13, characterized in that, The polymer materials in the first fiber composite board and the second fiber composite board include: one or more of epoxy resin and phenolic resin.

15. The support member according to any one of claims 1-14, characterized in that, The fibers in the first fiber composite board and the second fiber composite board include: one or more of carbon fiber, glass fiber, polyamide fiber, and polyethylene fiber.

16. A display screen assembly, characterized in that, Comprising: A flexible display screen, and a support member as described in any one of claims 1-15. The support member is arranged on the backlight side of the flexible display screen, and the flexible display screen is connected to the support member.

17. An electronic device, characterized in that, Comprising: A housing, and a display screen assembly as described in claim 16. The display screen assembly is connected to the housing.

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