Support member, display screen assembly, and electronic device

Abstract

The present application provides a support member, a display screen assembly, and an electronic device. The support member is arranged on a backlight side of a 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 having different moduli may be selected. In some embodiments of the present application, the support member may be divided into a bending portion and a support portion. The modulus of the bending portion is different from the modulus of the support portion. The bending portion may employ a fiber material having a lower modulus, and the support portion may employ a fiber material having a higher modulus. In some other embodiments of the present application, at a position of the support portion corresponding to adhesive dispensing or an elastic sheet, a fiber material having a higher modulus may be selected.

Description

Support, display screen assembly and electronic device

[0001] The present application claims priority to the Chinese patent application No. 202421851212.6, filed on July 31, 2024, and entitled "Support, display screen assembly and electronic device", the whole content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of display screens, in particular to a support, a display screen assembly and an electronic device. BACKGROUND

[0003] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend of future mobile electronic products. The foldable display terminal at least includes a flexible display screen. The performance of each component will directly affect the performance of the display screen. In order to maintain the flatness and rigidity of the flexible display screen, there is usually one or more layers of metal as a support under the screen.

[0004] The material of the existing support mainly includes metal: stainless steel, copper alloy, titanium alloy, aluminum alloy, which has large density and heavy weight. With the increasing demand of consumers for the portability of electronic devices, there is also a demand for reducing the weight of the support. Therefore, the support can also use fiber composite materials such as carbon fiber, glass fiber, aramid fiber and ceramic fiber, which have low density and obvious weight reduction benefits. However, the rigidity of the fiber material after being compounded with resin is poor, and the thickness needs to be increased for compensation, which is not conducive to the lightness and thinness of the product.

[0005] However, the existing support cannot meet the requirement of being light and reliable.

[0006] CONTENT OF THE INVENTION

[0007] Embodiments of the present application provide a support, a display screen assembly and an electronic device, which aim to improve the problem that the existing support cannot balance lightness and support performance.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] In a first aspect of the present application, a support is provided, which is arranged on the backlight side of a display screen, and comprises: a first fiber composite plate and a second fiber composite plate connected together, the first fiber composite plate comprising a first part, the second fiber composite plate comprising a second part, the first fiber composite plate and the second fiber composite plate being connected through the first part and the second part, and arranged in the same plane when the display screen is in a flat state; the material of the first fiber composite plate comprises: first fibers and a high molecular material solidified on the first fibers, and the material of the second fiber composite plate comprises: second fibers and a high molecular material solidified on the second fibers, wherein the modulus of the first fibers is greater than the modulus of the second fibers. Thus, the first fiber composite plate and the second fiber composite plate can use different fibers, and the modulus of different fibers is different. In the present application, the modulus of the fibers in the first fiber composite plate is greater than the modulus of the fibers in the second fiber composite plate. By splicing two plate bodies with different moduli together, the plate body with high modulus can be used as a reinforcing plate to increase the modulus of specific positions, such as the position of the elastic sheet and the position of the glue point, reduce the impact of the elastic sheet lifting or the glue point pulling under the screen on the screen, improve the large-area light and shadow effect of the screen, and better protect the display screen. Compared with using high modulus material for the entire support, the use of high modulus material is reduced, and the cost is reduced.

[0010] In an optional implementation, the second part of the second fiber composite plate is provided with a through hole, and the first part of the first fiber composite plate is provided with a first splicing part arranged in the through hole. Thus, the fiber composite plate with higher modulus can be arranged at the support corresponding to the position of the elastic sheet and the position of the glue point, and the display screen can be better protected.

[0011] In an optional implementation, the inner side wall of the through hole is provided with a first splicing groove, and the outer shape of the first splicing part is adapted to the shape of the first splicing groove. Thus, the stability of the connection between the first fiber composite plate and the second fiber composite plate can be improved.

[0012] In an optional implementation, the cross-sectional shape of the first splicing groove comprises: T-shaped, dovetail groove-shaped, trapezoidal. Thus, the stability of the connection between the first fiber composite plate and the second fiber composite plate can be further improved.

[0013] In an optional implementation, the first part of the first fiber composite plate and the second part of the second fiber composite plate are combined together by hot pressing. Thus, the first fiber composite plate and the second fiber composite plate can be integrated to improve the stability of the connection.

[0014] In an optional implementation, the support member further comprises: a third fiber composite plate connected with the second fiber composite plate; the third fiber composite plate comprises a third portion, the second fiber composite plate further comprises a fourth portion, and the third fiber composite plate and the second fiber composite plate are connected through the third portion and the fourth portion; when the display screen is in the unfolded state, the first fiber composite plate, the second fiber composite plate, and the third fiber composite plate are distributed in a direction perpendicular to the thickness direction of the support member, and the second fiber composite plate is arranged between the first fiber composite plate and the third fiber composite plate; when the display screen is in the folded state, the second fiber composite plate is in a bent state; the material of the third fiber composite plate comprises: a third fiber composite plate and a high polymer material solidified on the third fiber composite plate, and the modulus of the third fiber composite plate is greater than the modulus of the second fiber composite plate. In this way, the modulus of the first fiber composite plate and the third fiber composite plate is high, and as a support part, the support part can better resist the deformation of the module caused by the unevenness of the middle frame and the glue dispensing pulling, and the large-area light and shadow effect is improved. The second fiber composite plate is used for the bending part, so that the modulus of the bending part is less than the modulus of the support part, the elongation at break is higher, and the bending performance is better. Compared with selecting a material with high modulus for the entire area, the bending performance is better, and compared with selecting a material with low modulus for the entire area, the support effect is better, and the large-area light and shadow effect is better. In this way, the bending performance and support performance of the support member can be considered.

[0015] In an optional implementation, the first portion of the first fiber composite plate and the second portion of the second fiber composite plate, and the fourth portion of the second fiber composite plate and the third portion of the third fiber composite plate are combined together through hot pressing. In this way, the first fiber composite plate, the second fiber composite plate, and the third fiber composite plate can be connected into one body, and the connection stability is improved.

[0016] In an optional implementation, a plurality of through holes are arranged on the second fiber composite plate. In this way, the bending performance of the second fiber composite plate can be improved.

[0017] In an optional implementation, a second splicing groove is arranged on the second portion of the second fiber composite plate, the first portion of the first fiber composite plate is provided with a second splicing part, the shape of the second splicing part is matched with the shape of the second splicing groove, a third splicing groove is arranged on the fourth portion of the second fiber composite plate, and the third portion of the third fiber composite plate is provided with a fourth splicing part, and the shape of the fourth splicing part is matched with the shape of the third splicing groove. In this way, the stability of the connection between the first fiber composite plate and the second fiber composite plate can be improved.

[0018] In an optional implementation, the longitudinal section shape of the second splicing groove and the third splicing groove comprises a T shape, a dovetail groove shape, or a trapezoidal shape. In this way, the splicing part and the splicing groove can be prevented from shaking in the horizontal direction, and the stability of the connection between the first fiber composite plate and the second fiber composite plate can be further improved.

[0019] In an optional implementation, the first fiber composite plate comprises a first fiber layer, a second fiber layer, and a third fiber layer which 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. In this way, the multi-layer fiber composite plate is stacked 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 better providing rigid support for the flexible screen.

[0020] In an optional implementation, the support member further comprises a fourth fiber composite plate, the first fiber composite plate and the second fiber composite plate are arranged in the same plane when the display screen is in the unfolded state, and the fourth fiber composite plate and the second fiber composite plate are stacked in the thickness direction of the support member. The material of the fourth fiber composite plate comprises fourth fibers and a high polymer material solidified on the fourth fibers. In some embodiments, the modulus of the fourth fiber composite plate is less than the modulus of the first fiber composite plate. In this way, the fourth fiber composite plate provides support for the display screen, which is conducive to maintaining the flatness and rigidity of the screen.

[0021] In an optional implementation, the first fiber composite plate comprises a first fiber layer and a second fiber layer which are stacked, the first fiber layer is adjacent to the fourth fiber composite plate, the fiber direction of the first fiber layer is perpendicular to the fiber direction of the fourth fiber composite plate, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the first fiber layer. In this way, the multi-layer fiber composite plate is stacked 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 two directions and better providing rigid support for the flexible screen.

[0022] In an optional implementation, the fourth fiber composite plate, the first fiber composite plate, and the second fiber composite plate are combined together by hot pressing. In this way, the stability of the connection between the first fiber composite plate, the second fiber composite plate, and the fourth fiber composite plate can be improved.

[0023] In an optional implementation, the first fiber composite plate and the second fiber composite plate further comprise a high polymer material, and the modulus of the high polymer material in the first fiber composite plate is greater than the modulus of the high polymer material in the second fiber composite plate. In this way, the modulus of the first fiber composite plate can be further improved.

[0024] In an optional implementation, the high polymer material in the first fiber composite plate and the second fiber composite plate comprises one or more of epoxy resin, phenolic resin.

[0025] In an optional implementation, the fiber in the first fiber composite plate and the second fiber composite plate comprises one or more of carbon fiber, glass fiber, polyamide fiber, polyethylene fiber.

[0026] In a second aspect of the present application, a display screen assembly is provided, comprising a flexible display screen, and a support as described above, which is arranged at the backlight side of the flexible display screen, and the flexible display screen is connected with the first support layer. Thus, the flexible display screen assembly adopts the support as described above, which improves the flatness and rigidity of the flexible display screen, and realizes product thinning while ensuring the support performance, and improves the user experience.

[0027] In a third aspect of the present application, an electronic device is provided, comprising a housing and a display screen assembly as described above, which is connected with the housing. Thus, the electronic device adopts the display screen assembly as described above, which realizes product thinning while ensuring the support performance, and improves the user experience.

[0028] Embodiments of the present application provide a support, a display screen assembly and an electronic device, wherein the support is arranged at the backlight side of the flexible display screen, the support is composed of a fiber material and a high polymer material attached to the fiber material, and different fiber materials with different moduli can be selected for different regions of the support. In some embodiments of the present application, the support can be divided into a bending part and a support part, the modulus of the bending part is different from that of the support part, the bending part can adopt a fiber material with a lower modulus, and the support part can select a fiber material with a higher modulus. In another embodiment of the present application, the fiber material with a higher modulus can be selected at the position corresponding to the point gluing or the elastic sheet of the support part.

[0029] The support can include at least three fiber layers, so that the fiber directions of adjacent fiber layers are perpendicular. In this way, the multi-layer fiber composite plate is stacked with different angles, which is beneficial to form a multi-directional distribution of fibers, form a fiber network, and thus meet the mechanical strength requirements of the fiber composite material in different directions, and better provide rigid support for the flexible screen.

[0030] In some embodiments, the support can be divided into two support layers arranged in layers, one of which is formed by splicing a plurality of fiber composite plates, and the other is integrally formed. The integrally formed support layer is arranged close to the display screen, which is beneficial to improve the flatness of the display screen. BRIEF DESCRIPTION OF DRAWINGS

[0031] Fig. 1 is a disassembled structural schematic diagram of an electronic device according to an embodiment of the present application;

[0032] Fig. 2 is a structural schematic diagram of an electronic device according to an embodiment of the present application;

[0033] Fig. 3 is a structural schematic diagram of another electronic device according to an embodiment of the present application;

[0034] Fig. 4 is a sectional view of an electronic device according to an embodiment of the present application;

[0035] Fig. 5 is a structural schematic diagram of a support member;

[0036] Fig. 6 is a structural schematic diagram of a support member according to an embodiment of the present application;

[0037] Fig. 7 is a structural schematic diagram of a clamping structure according to an embodiment of the present application;

[0038] Fig. 8 is a structural schematic diagram of another clamping structure according to an embodiment of the present application;

[0039] Fig. 9 is a sectional structural schematic diagram of the support member shown in Fig. 6;

[0040] Fig. 10 is a laminated structural schematic diagram of the support member shown in Fig. 6;

[0041] Fig. 11 is a structural schematic diagram of another support member according to an embodiment of the present application;

[0042] Fig. 12 is a sectional structural schematic diagram of the support member shown in Fig. 11;

[0043] Fig. 13 is a laminated structural schematic diagram of the support member shown in Fig. 11;

[0044] Fig. 14 is a sectional structural schematic diagram of a support member according to an embodiment of the present application;

[0045] Fig. 15 is a sectional structural schematic diagram of another support member according to an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the drawings.

[0047] Hereinafter, the terms "first", "second", and the like are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0048] In addition, in the present application, the orientation terms such as "upper", "lower", and the like are defined relative to the orientation in which the components in the drawings are shown, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can change accordingly according to the change in the orientation in which the components are placed in the drawings.

[0049] An electronic device is provided in the embodiments of the present application. The electronic device can be a product with a display interface, such as a tablet computer, a mobile phone, an e-book reader, a remote controller, a personal computer (PC), a notebook computer, a personal digital assistant (PDA), a vehicle-mounted device, a network television, a wearable device, a television, and the like, and a smart watch, a smart bracelet, and the like. The embodiments of the present application do not specially limit the form of the electronic device.

[0050] Exemplarily, the electronic device can be a screen foldable device, including but not limited to a foldable mobile phone, a foldable tablet computer, and the like.

[0051] The following embodiments are exemplarily described by taking a mobile phone as an example.

[0052] FIG. 1 is a disassembled structural schematic diagram of an electronic device provided in the embodiments of the present application. As shown in FIG. 1, the electronic device 1 includes a display module 10 and a shell (or referred to as a battery cover) 12. A middle frame 11 is located between the display module 10 and the shell 12.

[0053] The display module 10 is used to display an image.

[0054] The display module 10, the middle frame 11, and the shell 12 can be respectively arranged at different layers in the thickness direction of the electronic device. The layers can be parallel to each other, and the plane where each layer is located can be referred to as an X-Y plane, and the direction perpendicular to the X-Y plane can be referred to as a Z direction. That is to say, the display module 10, the middle frame 11, and the shell 12 can be distributed in layers in the Z direction.

[0055] The display module 10 can be electrically connected to the PCB arranged on the middle frame 11 through a flexible printed circuit (FPC) passing through the middle frame 11 as shown in FIG. 1. Thus, the PCB can transmit display data to the display module 10 to control the display module 10 to display an image.

[0056] The middle frame 11 is located between the display module 10 and the shell 12, and a 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, an antenna, and the like. After the shell 12 is covered with the middle frame 11, the above-mentioned internal components are located between the shell 12 and the middle frame 11.

[0057] The shell 12 is connected with the middle frame 11 to form a receiving cavity for receiving electronic devices such as the above-mentioned PCB, camera, and battery. Thus, it is possible to prevent external water vapor and dust from entering the receiving cavity and affecting the performance of the above-mentioned electronic devices.

[0058] Embodiments of the present application do not limit the structure of the mobile phone. In some embodiments of the present application, as shown in FIGS. 2 and 3, the mobile phone can be a folding screen mobile phone, and the display module 10 includes a flexible display screen 101.

[0059] The flexible display screen 101 can be an active matrix organic light emitting diode (AMOLED) display screen.

[0060] The AMOLED display screen is a self-luminous display screen, and does not need to be provided with a back light module (BLM). Therefore, when a substrate of the AMOLED display screen is made of a flexible resin material such as polyimid (PI) or polyethylene terephthalate (PET), the AMOLED display screen can have a bendable characteristic.

[0061] FIG. 2 shows a structure diagram of a double-screen folding mobile phone, which includes a first shell 12a, a second shell 12b, a flexible display screen 101, and a hinge mechanism. The flexible display screen 101 can continuously cover the first shell 12a and the second shell 12b, and the first shell 12a and the second shell 12b are arranged on two sides of the hinge mechanism and are connected with the hinge mechanism. The flexible display screen 101 can also be unfolded and closed under the action of the hinge mechanism.

[0062] FIG. 3 shows a structure diagram of a three-screen folding mobile phone, and the example folding screen mobile phone is a three-screen folding mobile phone. The three-screen folding mobile phone can include a first shell 12a, a second shell 12b, and a third shell 12c, and a flexible display screen 101. The flexible display screen 101 can continuously cover the first shell 12a, the second shell 12b, and the third shell 12c. The folding screen mobile phone can also include a first hinge mechanism and a second hinge mechanism.

[0063] The first shell 12a and the second shell 12b are arranged on two sides of the first rotating shaft mechanism and are connected with the first rotating shaft mechanism respectively. The first rotating shaft mechanism can move to make the first shell 12a and the second shell 12b fold or unfold relative to each other, so as to realize the unfolding and closing of the flexible display screen 101 arranged on the first shell 12a and the second shell 12b.

[0064] The second shell 12b and the third shell 12c are arranged on two sides of the second rotating shaft mechanism and are connected with the second rotating shaft mechanism respectively. The second rotating shaft mechanism can move to make the second shell 12b and the third shell 12c fold or unfold relative to each other, so as to realize the unfolding and closing of the flexible display screen 101 arranged on the second shell 12b and the third shell 12c.

[0065] The foldable electronic device can be unfolded to an unfolded state, can be folded to a closed state, and can also be in an intermediate state between the unfolded state and the closed state. The foldable electronic device has at least two states, i.e., the unfolded state and the closed state. In some cases, a third state, i.e., an intermediate state between the unfolded state and the closed state, can be further included. The intermediate state is not only a unique state, but can be any one or more states between the unfolded state and the closed state.

[0066] The above-mentioned FIG. 2 and FIG. 3 are examples of a double-screen and triple-screen foldable electronic device. The foldable electronic device related to the embodiments of the present application can also be a device with more screens, such as a four-screen foldable electronic device, a five-screen foldable electronic device, etc.

[0067] The following will be described taking a double-screen foldable electronic device as an example. FIG. 4 is a cross-sectional view of an electronic device provided by an embodiment of the present application. As shown in FIG. 4, in order to protect the flexible display screen 101, the electronic device further includes a support 200 arranged on the backlight side of the flexible display screen 101. The support 200 is used to provide reliable support for the flexible display screen 101.

[0068] The support can be used in a foldable terminal as a flexible display screen under-screen support structure. For example, the support 200 can be a bamboo book structure.

[0069] As shown in FIG. 4, the above-mentioned shell 12 includes a first shell 12a, a second shell 12b, and a rotating shaft mechanism 13 located between the first shell 12a and the second shell 12b. The first shell 12a and the second shell 12b can rotate along the axis O-O of the rotating shaft mechanism 13, thereby driving the display screen 102 to fold or unfold.

[0070] For example, when the included angle a between the first shell 12a and the second shell 12b is 0°, the flexible display screen 101 is in a folded state.

[0071] Or, when the included angle a between the first shell 12a and the second shell 12b increases to 180°, the flexible display 101 is in an unfolded state.

[0072] The flexible display 101 includes a first non-bending area opposite to the first shell 12a, a second non-bending area opposite to the second shell 12b, and a bending area opposite to the hinge mechanism 13.

[0073] The support 200 is arranged on the backlight side of the flexible display 101, that is, between the flexible display 101 and the shell 12. In some embodiments, the support 200 includes a first support part 201 connected to the first non-bending area, a second support part 202 connected to the second non-bending area, and a bending part 203 connected to the bending area.

[0074] Embodiments of the present application do not limit the structure of the support. FIG. 5 is a schematic diagram of the structure of a support. Referring to FIG. 5, the support 200 includes a fiber composite plate.

[0075] In some examples, the material of the fiber composite plate can be a fiber composite material, a carbon fiber, a glass fiber, an aramid fiber, a ceramic fiber, etc., which is formed by winding, molding or pultrusion process with a matrix material.

[0076] Compared with a metal layer, the weight of the fiber composite plate is reduced, but the stiffness of the fiber composite plate is poor. When the flexible display is repeatedly bent or unfolded, the opposite sides of the flexible display will be constantly subjected to inward compression force and outward tensile force, which can easily lead to insufficient flatness and stiffness (Stiffness) of the flexible display under long-term use. The Stiffness, also known as the elastic modulus, refers to the ability of a material or structure to resist elastic deformation under stress. The greater the elastic modulus or Stiffness, the smaller the elastic deformation. The smaller the elastic modulus or Stiffness, the greater the elastic deformation.

[0077] In some embodiments, the stiffness can be compensated by increasing the thickness of the support, which is not conducive to the thinness of the product.

[0078] Therefore, embodiments of the present application provide an improved support. FIG. 6 is a schematic diagram of the structure of a support provided by an embodiment of the present application. As shown in FIG. 6, the support 200 at least includes a first fiber composite plate 2001 and a second fiber composite plate 2002 connected together. The first fiber composite plate 2001 includes a first part 21, and the second fiber composite plate 2002 includes a second part 22. The first fiber composite plate 2001 and the second fiber composite plate 2002 are connected through the first part 21 and the second part 22.

[0079] The first fiber composite plate 2001 and the second fiber composite plate 2002 are arranged in the same plane when the display screen is in the flat state. The first fiber composite plate 2001 and the second fiber composite plate 2002 can each be a flat fiber composite plate.

[0080] The support provided by the embodiments of the present application uses fiber composite materials for the first fiber composite plate 2001 and the second fiber composite plate 2002. Fiber composite materials have high strength and relatively light weight compared to metal materials such as stainless steel. The support can provide good rigid support for the flexible screen while achieving a high weight reduction benefit, which is conducive to improving the product competitiveness of the foldable terminal.

[0081] The fiber composite plate of the present application includes a fiber framework and a high polymer material solidified on the fiber framework. In the embodiments of the present application, the high polymer material includes resin and / or rubber. In the present application, the specific types of resin and rubber are not particularly limited, and can meet the application requirements of electronic devices and provide sufficient rigid support for the flexible screen in cooperation with the fibers. For example, the high polymer material includes one or more of epoxy resin, phenolic resin, amino resin, unsaturated polyester, siloxane resin, polyolefin, polyamide, polyformaldehyde, polycarbonate, polyphenyl ether, and polysulfone. In order to minimize the overall weight of the flexible screen support structure, a high polymer material with relatively small mass can be selected on the premise of meeting the mechanical support. The high polymer material can be impregnated and solidified on the fiber composite plate by a solution impregnation method or a hot melting method combined with a hot pressing process.

[0082] In the embodiments of the present application, the fibers in the fiber composite plate are continuous fibers, which can 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. The ultra-high molecular weight polyethylene fiber refers to a fiber spun from polyethylene with a molecular weight of more than 1 million. The fiber composite plate can be woven from one type of fiber or mixed woven from two or more types of fibers. The mixed weaving can integrate the performance advantages of multiple types of fibers.

[0083] The present application does not limit the mass content of the fibers in the fiber composite material. For 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 the specific rigid support requirements and the mechanical properties of the selected resin or rubber. Generally, the more the fiber content, the lighter the overall weight of the fiber composite material, which is more conducive to weight reduction. In some embodiments, the mass content of the fibers in the fiber composite material is 30%-70% in consideration of the rigid support performance and weight reduction requirements.

[0084] The first fiber composite plate 2001 (fiber layer 211a, fiber layer 212a, fiber layer 213a in FIG. 9) includes a first fiber layer and a high polymer material solidified on the first fiber layer, and the second fiber composite plate 2002 (fiber layer 211b, fiber layer 212b, fiber layer 213b in FIG. 9) includes a second fiber layer and a high polymer material solidified on the second fiber layer.

[0085] The first fiber composite plate and the second fiber composite plate can be made of different fibers, and the different fibers have different moduli. For example, the modulus of the first fiber composite plate can be greater than the modulus of the second fiber composite plate.

[0086] In the embodiments of the present application, two plates with different moduli can be spliced together. The plate with a high modulus can be used as a reinforcing plate to increase the modulus of a specific position, such as a bullet position and a dispensing position, reduce the impact of the bullet lifting or dispensing pulling under the screen, improve the large-area light and shadow effect of the screen, and better protect the display screen. Compared with using high modulus materials for the entire support, the use of high modulus materials is reduced, and the cost is reduced.

[0087] The present application does not limit the connection mode of the first plate and the second plate. In some embodiments, the first part 21 of the first fiber composite plate 2001 and the second part 22 of the second fiber composite plate 2002 can be connected together by hot pressing.

[0088] In some embodiments, the second part 22 of the second fiber composite plate 2002 is provided with a through hole, and the first part 21 of the first fiber composite plate 2001 includes a splicing portion (which can be referred to as a first splicing portion), which is arranged in the through hole.

[0089] In order to improve the connection stability of the first fiber composite plate 2001 and the second fiber composite plate 2002, a clamping structure can also be provided between the first fiber composite plate 2001 and the second fiber composite plate 2002. For example, the clamping structure includes a splicing groove (which can be referred to as a first splicing groove). For example, the inner side wall of the through hole is provided with a splicing groove, and the outer shape of the splicing portion is adapted to the shape of the splicing groove. Alternatively, the inner side wall of the through hole is provided with a splicing portion, and the outer side wall of the first fiber composite plate 2001 is provided with a splicing groove, and the outer shape of the splicing portion is adapted to the shape of the splicing groove.

[0090] The present application does not limit the shape of the splicing groove. In some embodiments, the cross-sectional shape of the splicing groove includes a rectangle, a dovetail groove, and a trapezoid.

[0091] In some embodiments, as shown in FIG. 7, the first part 21 of the first fiber composite plate 2001 includes a main body part 2001a, and a splicing part 2001b connected with the main body part 2001a, the splicing part 2001b being a square protrusion, and correspondingly, the splicing groove can be a square splicing groove.

[0092] In some embodiments, as shown in FIG. 8, the splicing part 2001b can be a T-shaped protrusion, and correspondingly, the splicing groove can be a T-shaped splicing groove.

[0093] In some embodiments, the splicing part can be a trapezoidal protrusion, and correspondingly, the splicing groove can be a trapezoidal splicing groove.

[0094] In some embodiments, the splicing part can be a dovetail-shaped protrusion, and correspondingly, the splicing groove can be a dovetail-shaped splicing groove.

[0095] In some embodiments, the splicing part can be a conical protrusion, and correspondingly, the splicing groove can be a conical splicing groove.

[0096] In some embodiments, the splicing part can be a circular arc protrusion, and correspondingly, the splicing groove can be a circular arc splicing groove.

[0097] The splicing part of the first fiber composite plate 2001 and the splicing groove shape of the second fiber composite plate 2002 provided by the embodiments of the present application are matched, wherein the greater the contact area of the splicing part and the splicing groove, the more conducive to increasing the bonding force of the contact surface. For example, the bonding force of the interface using the dovetail-shaped protrusion and the dovetail-shaped splicing groove can be slightly greater than the bonding force of the interface using the square protrusion and the square splicing groove. The present application adjusts the shape of the splicing groove to make the inner wall area larger, thereby increasing the connection stability and reducing the risk of separation of the plate body.

[0098] The embodiments of the present application do not limit the fiber direction and the number of layers of the fiber composite plate in each flat plate. In the embodiments of the present application, the fiber weaving method of each fiber composite plate can be unidirectional weaving or multidirectional weaving. That is, the fiber composite plate can be a fiber unidirectional cloth or a fiber woven cloth. The fiber unidirectional cloth refers to a uniaxial fiber weaving, which means that a large number of textile yarns are arranged in one direction (usually warp direction, and there are also weft unidirectional fabrics), and only a small number of yarns are arranged in another direction, and the result is that the entire strength of the cloth is actually in one direction. The fiber woven cloth refers to a multi-axial fiber weaving, which means that a large number of textile yarns are arranged in multiple directions, and the strength of the cloth is finally distributed in multiple axial directions. For example, the 0° / 90° weaving refers to a biaxial fiber distribution of the fiber layer, and the angles of the two axes are 0° and 90° respectively, and the included angle of the fibers in the two axes is 90°. For another example, the 45° weaving (i.e. +45° / -45°) refers to a biaxial fiber distribution of the fiber layer, and the angles of the two axes are +45° and -45° respectively, and the included angle of the fibers in the two axes is 90°.

[0099] In the embodiments, the fiber composite plate can include only one fiber layer, or can include multiple (two or more) fiber layers.

[0100] In some embodiments, as shown in FIG. 10, the fiber composite plate of the support part is three layers: the fiber layer 211 (including the fiber layer 211a and the fiber layer 211b in FIG. 9), the fiber layer 212 (including the fiber layer 212a and the fiber layer 212b in FIG. 9), and the fiber layer 213 (including the fiber layer 213a and the fiber layer 213b in FIG. 9). In order to better enhance the mechanical strength of the fiber composite material and improve the strength of the fiber composite material in each direction, the three-layer fiber composite plate can be stacked at different angles (multi-angle).

[0101] For example, the three-layer fiber composite plate can be a multi-layer fiber unidirectional cloth stacked at different angles, that is, each fiber composite plate is a fiber unidirectional cloth.

[0102] The stacking direction of the three-layer fiber composite plate can be any angle in the range of 0°-90°. Among them, the multi-layer fiber composite plate is stacked at different angles, which is beneficial to form a multi-directional distribution of fibers and form a fiber network, thereby meeting the mechanical strength requirements of the fiber composite material in different directions and better providing rigid support for the flexible screen.

[0103] In some embodiments, the fiber direction of the fiber layer 211 and the fiber direction of the fiber layer 212 are perpendicular, and the fiber direction of the fiber layer 212 and the fiber direction of the fiber layer 213 are perpendicular. For example, three layers of unidirectional fabric can be laminated at different angles, as shown in FIG. 10, 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 application, the 0° direction is the x direction in the figure. The 90° direction is the y direction in the figure.

[0104] In this way, the fibers can be continuously distributed in multiple directions, improving the strength of the fiber composite material in each direction and improving the overall mechanical properties of the fiber composite material.

[0105] In the above embodiments, the plate body with higher modulus can be used as a reinforcing plate, and in other embodiments, the plate body with lower modulus can be used for the bending portion.

[0106] For example, as shown in FIG. 11, the support includes a first fiber composite plate 2001, a second fiber composite plate 2002, and a third fiber composite plate 2003 connected together. The first fiber composite plate 2001 includes a first portion 21, the second fiber composite plate 2002 includes a second portion 22, and the first fiber composite plate 2001 and the second fiber composite plate 2002 are connected by the first portion 21 and the second portion 22. The third fiber composite plate 2003 includes a third portion 23, and the second fiber composite plate 2002 further includes a fourth portion 24, and the third fiber composite plate 2003 and the second fiber composite plate 2002 are connected by the third portion 23 and the fourth portion 24.

[0107] The third fiber composite plate 2003 includes a bending portion, and when the display screen is in the unfolded state, the first fiber composite plate 2001, the second fiber composite plate 2002, and the third fiber composite plate 2003 are distributed in the direction perpendicular to the thickness direction of the support, and the second fiber composite plate is arranged between the first fiber composite plate and the third fiber composite plate.

[0108] When the display screen is in the folded state, the second fiber composite plate 2002 is in a curved state.

[0109] The first fiber composite plate 2001 includes a first fiber layer (fiber layer 211a, fiber layer 212a, and fiber layer 213a in FIG. 12) and a high polymer material solidified on the first fiber layer. The second fiber composite plate 2002 includes a second fiber layer (fiber layer 211b, fiber layer 212b, and fiber layer 213b in FIG. 12) and a high polymer material solidified on the second fiber layer. The third fiber composite plate 2003 includes a third fiber layer (fiber layer 211c, fiber layer 212c, and fiber layer 213c in FIG. 12) and a high polymer material solidified on the third fiber layer, wherein the modulus of the third fiber composite plate is greater than the modulus of the second fiber composite plate.

[0110] In the embodiment, the modulus of the first fiber composite plate 2001 and the third fiber composite plate 2003 is high, and as a support part, the first fiber composite plate 2001 and the third fiber composite plate 2003 can better resist the deformation of the module caused by the unevenness of the middle frame and the glue dispensing pulling, and improve the large-area light and shadow effect. The second fiber composite plate 2002 is used for the bending part, so that the modulus of the bending part is less than the modulus of the support part, the elongation at break is higher, and the bending performance is better. Compared with selecting a material with high modulus in the entire area, the bending performance is better, and compared with selecting a material with low modulus in the entire area, the support effect is better, and the large-area light and shadow effect is better. In this way, the bending performance and support performance of the support part can be considered.

[0111] In some embodiments, a plurality of through holes 2000 are provided on the second fiber composite plate 2002, which can further improve the bending performance of the support part.

[0112] The connection mode of the first fiber composite plate 2001, the second fiber composite plate 2002, and the third fiber composite plate 2003 is not limited in the embodiment. For example, the first part 21 of the first fiber composite plate 2001 and the second part 22 of the second fiber composite plate 2002, and the fourth part 24 of the second fiber composite plate 2002 and the third part 23 of the third fiber composite plate 2003 are combined together by hot pressing. The first fiber composite plate 2001, the second fiber composite plate 2002, and the third fiber composite plate 2003 are combined together by hot pressing. In the hot pressing process, different plate bodies can be connected together by the flow and solidification of the high polymer material to form a whole fiber composite plate.

[0113] To improve the connection stability of the first fiber composite plate 2001 and the second fiber composite plate 2002, and the second fiber composite plate 2002 and the third fiber composite plate 2003, a clamping structure can also be arranged between the first part 21 of the first fiber composite plate 2001 and the second part 22 of the second fiber composite plate 2002, and between the fourth part 24 of the second fiber composite plate 2002 and the third part 23 of the third fiber composite plate 2003. For example, the clamping structure includes a splicing groove and a splicing part, and the shape of the splicing part is matched with the shape of the splicing groove. For example, the second part 22 of the second fiber composite plate 2002 includes a splicing groove (which can be referred to as a second splicing groove), the first part 21 of the first fiber composite plate 2001 includes a splicing part (which can be referred to as a second splicing part), the fourth part 24 of the second fiber composite plate 2002 includes a splicing groove (which can be referred to as a third splicing groove), and the third part 23 of the third fiber composite plate 2003 includes a splicing part (which can be referred to as a fourth splicing part).

[0114] The embodiments of the present application do not limit the structure of the splicing groove and the splicing part, and the above-mentioned descriptions of the splicing groove and the splicing part can be referred to, which will not be repeated here.

[0115] The embodiments of the present application do not limit the fiber direction and the number of layers of the fiber composite plate in each flat plate. In some embodiments, as shown in FIG. 12, the fiber composite plate of the support part is three layers: fiber layer 211 (including fiber layer 211a, fiber layer 211b and fiber layer 211c in FIG. 12), fiber layer 212 (including fiber layer 212a, fiber layer 212b and fiber layer 212c in FIG. 12) and fiber layer 213 (including fiber layer 213a, fiber layer 213b and fiber layer 213c in FIG. 12). In order to better enhance the mechanical strength of the fiber composite material and improve the strength of the fiber composite material in each direction, the three-layer fiber composite plate can be stacked at different angles (multi-angle).

[0116] As shown in FIG. 13, the three-layer fiber composite plate can be a multi-layer fiber unidirectional cloth stacked at different angles, that is, each fiber composite plate is a fiber unidirectional cloth.

[0117] For example, the three-layer fiber unidirectional cloth can be stacked at different angles. As shown in FIG. 13, 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 of the fiber composite material in each direction and improving the overall mechanical properties of the fiber composite material. In the present application, the 0° direction is the x direction in the figure. The 90° direction is the y direction in the figure.

[0118] In the above embodiment, the support is hot-pressed after being spliced by multiple flat plates, but there are splicing grooves between the flat plates, which are prone to unevenness at the positions of the splicing grooves, and are prone to light and shadow after being attached to the flexible display screen, affecting use. In order to improve the flatness of the support, in some embodiments, as shown in FIG. 14, a fourth fiber composite plate 2004 can also be arranged on the side of the above support close to the display screen. The material of the fourth fiber composite plate 2004 includes: a fourth fiber layer 214 and a high polymer material solidified on the fourth fiber layer 214, wherein the modulus of the fourth fiber layer 214 is less than the modulus of the first fiber layer 211. The fourth fiber composite plate 2004 can be formed by hot-pressing an integral layer of fiber composite plate and high polymer material, and there is no splicing groove, thereby improving the flatness of the support.

[0119] For example, in some embodiments, as shown in FIG. 14, the support includes: a first fiber composite plate 2001, a second fiber composite plate 2002, and a fourth fiber composite plate 2004. The first fiber composite plate 2001 and the second fiber composite plate 2002 are connected to the fourth fiber composite plate 2004 after being spliced.

[0120] The first fiber composite plate 2001 includes: a first fiber layer (fiber layer 211a and fiber layer 212a in FIG. 14) and a high polymer material solidified on the first fiber layer, and the second fiber composite plate 2002 includes: a second fiber layer (fiber layer 211b and fiber layer 212b in FIG. 14) and a high polymer material solidified on the second fiber layer. The material of the fourth fiber composite plate 2004 includes: a fourth fiber layer 214 and a high polymer material solidified on the fourth fiber layer 214.

[0121] The number of layers of the fiber composite plate in each plate body is not limited in the embodiments of the present application. For example, as shown in FIG. 14, the support includes three layers of fiber composite plates. The first fiber composite plate 2001 includes two layers of fiber layers, the second fiber composite plate 2002 includes two layers of fiber layers, and the fourth fiber composite plate 2004 includes one layer of fiber layer.

[0122] The first fiber composite plate 2001 includes: a fiber layer 211a and a fiber layer 212a arranged in layers, and the second fiber composite plate 2002 includes: a fiber layer 211b and a fiber layer 212b arranged in layers. The fiber layer 211a and the fiber layer 211b are arranged in the same plane and are spliced into a fiber layer 211, and the fiber layer 212a and the fiber layer 212b are arranged in the same plane and are spliced into a fiber layer 212. The fourth fiber composite plate 2004 includes: a fiber layer 214. The fiber layer 211, the fiber layer 212, and the fiber layer 214 are arranged in layers.

[0123] In the embodiment, the first fiber composite plate 2001 and the second fiber composite plate 2002 are both double-layer fiber composite plates, and the fourth fiber composite plate 2004 is a single-layer fiber composite plate. In other embodiments, the first fiber composite plate 2001 can include one layer of fiber composite plate, the second fiber composite plate 2002 can include one layer of fiber composite plate, and the fourth fiber composite plate can include two layers of fiber composite plate. These are all within the protection scope of the present application.

[0124] The fiber directions of each layer of fiber layer can refer to the description of the above embodiments, which will not be repeated here.

[0125] In other embodiments, as shown in FIG. 15, the support includes a first fiber composite plate 2001, a second fiber composite plate 2002, a third fiber composite plate 2003, and a fourth fiber composite plate 2004. The first fiber composite plate 2001, the second fiber composite plate 2002, and the third fiber composite plate 2003 are connected to the fourth fiber composite plate 2004 after splicing.

[0126] The first fiber composite plate 2001 includes a first fiber layer (fiber layer 211a, fiber layer 212a in FIG. 15) and a high polymer material solidified on the first fiber layer, the second fiber composite plate 2002 includes a second fiber layer (fiber layer 211b, fiber layer 212b in FIG. 15) and a high polymer material solidified on the second fiber composite plate. The third fiber composite plate 2003 includes a third fiber layer (fiber layer 211c, fiber layer 212c in FIG. 15) and a high polymer material solidified on the third fiber layer. The material of the fourth fiber composite plate 2004 includes a fourth fiber layer 214 and a high polymer material solidified on the fourth fiber layer 214.

[0127] The number of layers of fiber composite plates in each plate body is not limited in the embodiments of the present application. For example, as shown in FIG. 15, the support includes three layers of fiber layers. The first fiber composite plate 2001 includes two layers of fiber layers, the second fiber composite plate 2002 includes two layers of fiber layers, the third fiber composite plate 2003 includes two layers of fiber layers, the first fiber composite plate 2001, the second fiber composite plate 2002, and the third fiber composite plate 2003 are arranged in the same plane, and the fourth fiber composite plate 2004 includes one layer of fiber layer.

[0128] The first fiber composite plate 2001 comprises fiber layers 211a and 212a stacked together, the second fiber composite plate 2002 comprises fiber layers 211b and 212b stacked together, and the third fiber composite plate 2003 comprises fiber layers 211c and 212c stacked together. The fiber layers 211a, 211b and 211c are arranged in the same plane and spliced together to form a fiber layer 211, and the fiber layers 212a, 212b and 212c are arranged in the same plane and spliced together to form a fiber layer 212. The fourth fiber composite plate 2004 comprises a fiber layer 214. The fiber layers 211, 212 and 214 are stacked together.

[0129] In this embodiment, the first fiber composite plate 2001 and the second fiber composite plate 2002 are both double-layer fiber composite plates, and the fourth fiber composite plate 2004 is a single-layer fiber composite plate. In other embodiments, the first fiber composite plate 2001, the second fiber composite plate 2002 and the third fiber composite plate 2003 can all be single-layer fiber composite plates, and the fourth fiber composite plate can comprise two fiber composite plates. These all fall within the scope of the present application.

[0130] The fiber directions of each fiber composite plate can refer to the description of the above embodiments, which will not be repeated here.

[0131] The present application provides a support, a display screen assembly and an electronic device. The support is arranged on the backlight side of the flexible display screen, and is composed of a fiber material and a polymer material attached to the fiber material. Different fiber materials with different moduli can be selected for different regions of the support. In some embodiments of the present application, the support can be divided into a bending portion and a supporting portion. The modulus of the bending portion is different from that of the supporting portion. The bending portion can be made of fiber material with a lower modulus, and the supporting portion can be made of fiber material with a higher modulus. In other embodiments of the present application, fiber material with a higher modulus can be selected for the positions corresponding to the dispensing or the spring sheet of the supporting portion.

[0132] The support can comprise at least three fiber layers, and the fiber directions of adjacent fiber layers can be perpendicular. In this way, the use of different angles for the stacking of the multi-layer fiber composite plate is conducive to the formation of multi-directional distribution of fibers and the formation of a fiber network, thereby meeting the mechanical strength requirements of the fiber composite material in different directions and better providing rigid support for the flexible screen.

[0133] In some embodiments, the support can be divided into two stacked support layers. One of the support layers is formed by splicing a plurality of fiber composite plates, and the other support layer is integrally formed. The integrally formed support layer is arranged close to the display screen, which is conducive to improving the flatness of the display screen.

[0134] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any change or replacement within the technical scope disclosed by the present application should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A support member characterized by, The support is arranged at the backlight side of the display screen, and comprises a first fiber composite plate and a second fiber composite plate connected together, the first fiber composite plate comprises a first part, the second fiber composite plate comprises a second part, and the first fiber composite plate and the second fiber composite plate are connected through the first part and the second part. When the display screen is in the flat state, the first fiber composite plate and the second fiber composite plate are arranged in the same plane. The modulus of the fibers in the first fiber composite plate is greater than the modulus of the fibers in the second fiber composite plate.

2. Support according to claim 1, characterized in that The second part of the second fiber composite plate is provided with a through hole, and the first part of the first fiber composite plate comprises a first splicing part arranged in the through hole.

3. Support according to claim 2, characterized in that The inner side wall of the through hole is provided with a first splicing groove, and the shape of the first splicing part is matched with the shape of the first splicing groove.

4. Support according to claim 3, characterized in that The cross-sectional shape of the first splicing groove comprises a T shape, a dovetail groove shape, and a trapezoidal shape.

5. Support according to claim 4, characterized in that The first part of the first fiber composite plate and the second part of the second fiber composite plate are combined together by hot pressing.

6. The support of claim 1, wherein, The support further comprises a third fiber composite plate connected with the second fiber composite plate, the third fiber composite plate comprises a third part, the second fiber composite plate further comprises a fourth part, and the third fiber composite plate and the second fiber composite plate are connected through the third part and the fourth part. When the display screen is in the flat state, the first fiber composite plate, the second fiber composite plate and the third fiber composite plate are distributed in the direction perpendicular to the thickness direction of the support, and the second fiber composite plate is arranged between the first fiber composite plate and the third fiber composite plate. When the display screen is in the folded state, the second fiber composite plate is in a curved state. The modulus of the fibers in the third fiber composite plate is greater than the modulus of the fibers in the second fiber composite plate.

7. Support according to claim 6, characterized in that The first part of the first fiber composite plate and the second part of the second fiber composite plate, and the fourth part of the second fiber composite plate and the third part of the third fiber composite plate are combined together by hot pressing.

8. Support according to claim 6 or 7, characterized in that The second part of the second fiber composite plate comprises a second splicing groove, the first part of the first fiber composite plate comprises a second splicing part, the shape of the second splicing part is matched with the shape of the second splicing groove, the fourth part of the second fiber composite plate comprises a third splicing groove, the third part of the third fiber composite plate comprises a fourth splicing part, and the shape of the fourth splicing part is matched with the shape of the third splicing groove.

9. Support according to any one of claims 1-8, characterized in that The first fiber composite plate comprises a first fiber layer, a second fiber layer and a third fiber layer arranged in layers, the fiber direction of the first fiber layer and the fiber direction of the second fiber layer are perpendicular, and the fiber direction of the second fiber layer and the fiber direction of the third fiber layer are perpendicular.

10. Support according to any one of claims 1-8, characterized in that The support further comprises a fourth fiber composite plate, the first fiber composite plate and the second fiber composite plate are arranged in the same plane when the display screen is in the flat state, and the fourth fiber composite plate and the second fiber composite plate are arranged in a laminated manner along the thickness direction of the support.

11. Support according to claim 10, characterized in that The first fiber composite plate comprises a first fiber layer and a second fiber layer arranged in a laminated manner, the first fiber layer is adjacent to the fourth fiber composite plate, the fiber direction of the first fiber layer is perpendicular to the fiber direction of the fourth fiber composite plate, and the fiber direction of the second fiber layer is perpendicular to the fiber direction of the first fiber layer.

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

13. Support according to any one of claims 1-12, characterized in that The first fiber composite plate and the second fiber composite plate further comprise a polymer material, the modulus of the polymer material in the first fiber composite plate is greater than the modulus of the polymer material in the second fiber composite plate.

14. Support according to any one of claims 1-13, characterized in that The polymer material in the first fiber composite plate and the second fiber composite plate comprises one or more of epoxy resin and phenolic resin.

15. Support according to any one of claims 1-14, characterized in that The fiber in the first fiber composite plate and the second fiber composite plate comprises one or more of carbon fiber, glass fiber, polyamide fiber and polyethylene fiber.

16. A display screen assembly, comprising: Comprising: A flexible display screen and the support according to any one of claims 1-15, the support is arranged on the back light side of the flexible display screen, and the flexible display screen is connected with the support.

17. An electronic device, comprising: Comprising: A housing, and the display screen assembly according to claim 16, the display screen assembly is connected with the housing.

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