Supporting piece, display module and display device

Abstract

The invention discloses a supporting piece, a display module and a display device. The supporting piece comprises a first supporting layer, a second supporting layer, a third supporting layer and at least one impact-resistant film layer, the first supporting layer, the second supporting layer and the third supporting layer are sequentially arranged in a stacked mode, and the first supporting layer, the second supporting layer and the third supporting layer are each formed by compounding a carbon fiber material and a first resin material. The impact-resistant film layer is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials. The supporting piece comprises the three basic supporting layers including the first supporting layer, the second supporting layer and the third supporting layer, and the impact-resistant film layer is introduced into the supporting piece, so that the impact-resistant film layer can be used for improving the overall impact performance and bending rigidity of the supporting piece, the bending performance of the supporting piece is improved, and the service life of the supporting piece is prolonged. Therefore, the increasingly improved supporting requirements of the flexible OLED module can be met.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of display devices, and particularly relates to a support member, a display module, and a display device. Background Art

[0002] In the related art, in a flexible organic light-emitting semiconductor display (OLED) module, a commonly used support member adopts a scheme of compounding a polyimide (PI) double-sided adhesive and a carbon fiber board. However, since the carbon fiber board is an anisotropic material, the bending stiffness of the support member is low, the impact resistance is poor, and the bending performance is poor, which cannot meet the increasing support requirements of the flexible OLED module.

[0003] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the present disclosure, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Invention

[0004] The present disclosure aims to at least solve to some extent the technical problems that the support member has low bending stiffness, poor impact resistance, poor bending performance, and cannot meet the increasing support requirements of the flexible OLED module. To this end, the present disclosure provides a support member, a display module, and a display device.

[0005] A support member provided by an embodiment of the present disclosure, the support member includes a first support layer, a second support layer, a third support layer, and at least one impact-resistant film layer; the first support layer, the second support layer, and the third support layer are sequentially stacked, and the first support layer, the second support layer, and the third support layer are respectively formed by compounding a carbon fiber material and a first resin material; the impact-resistant film layer is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials; wherein: the impact-resistant film layer is located on a side of the first support layer away from the second support layer; and / or, the impact-resistant film layer is located between the first support layer and the second support layer; and / or, the impact-resistant film layer is located between the second support layer and the third support layer; and / or, the impact-resistant film layer is located on a side of the third support layer away from the second support layer.

[0006] In some embodiments, the tensile strength of the first resin material is greater than the tensile strength of the second resin material, the tensile modulus of the first resin material is greater than the tensile modulus of the second resin material, and the elongation at break of the second resin material is greater than the elongation at break of the first resin material.

[0007] In some embodiments, the tensile strength of the first resin material is 1.75 to 12.00 times that of the second resin material; the tensile modulus of the first resin material is 500.00 to 1200.00 times that of the second resin material; the elongation at break of the second resin material is 20.00 to 200.00 times that of the first resin material.

[0008] In some embodiments, the tensile strength of the second resin material is 9.00 MPa to 40.00 MPa, the tensile modulus of the second resin material is 3.00 MPa to 5.00 MPa, and the elongation at break of the second resin material is 200% to 400%.

[0009] In some embodiments, the tensile strength of the first resin material is 70 MPa to 100 MPa, the tensile modulus of the first resin material is 2500 MPa to 3500 MPa, and the elongation at break of the first resin material is 2% to 10%.

[0010] In some embodiments, the thickness of the impact-resistant film layer is 10 μm to 200 μm.

[0011] In some embodiments, the thickness of the impact-resistant film layer is 50 μm to 200 μm.

[0012] In some embodiments, the first resin material is selected from any one of epoxy resin-based resins, polyurethane-based resins, bismaleimide resin-based resins, and polyimide resin-based resins.

[0013] In some embodiments, the carbon fiber materials in the first support layer, the carbon fiber materials in the second support layer, and the carbon fiber materials in the third support layer are each independently selected from any one or more of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber.

[0014] In some embodiments, the content of the first resin material in the first support layer is greater than the content of the first resin material in the second support layer; and / or, the content of the first resin material in the third support layer is greater than the content of the first resin material in the second support layer.

[0015] In some embodiments, the content of the first resin material in the first support layer is 25% to 50%, and / or, the content of the first resin material in the second support layer is 25% to 50%, and / or, the content of the first resin material in the third support layer is 25% to 50%.

[0016] In some embodiments, the weight per square meter of the carbon fiber material in the first support layer is 15 g / m 2 ~40 g / m 2 ; and / or, the weight per square meter of the carbon fiber material in the second support layer is 50 g / m 2 ~150 g / m 2 ; and / or, the weight per square meter of the carbon fiber material in the third support layer is 15 g / m 2 ~40 g / m 2 .

[0017] The present disclosure also provides a display module, which includes the above-mentioned support member.

[0018] The present disclosure also provides a display device, which includes the above-mentioned display module.

[0019] The embodiments of the present disclosure at least have the following beneficial effects:

[0020] The above-mentioned support member includes three basic support layers, namely the first support layer, the second support layer and the third support layer, and an impact-resistant film layer is introduced into the support member, so that the overall impact performance and bending stiffness of the support member can be improved by using the impact-resistant film layer, and the bending performance of the support member can be improved, so as to meet the increasing support requirements of flexible OLED modules. At the same time, the first support layer, the second support layer and the third support layer are respectively composed of a carbon fiber material and a first resin material; the impact-resistant film layer is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials; then the impact-resistant film layer can be synchronously compounded with the first support layer, the second support layer and the third support layer in the support member through a hot pressing process, that is, the module lamination process steps can be reduced, the preparation efficiency can be improved, and the interfacial bonding force between the impact-resistant film layer and the adjacent support layer can be ensured, which can reduce the risk of delamination of the support member after multiple bends to a certain extent. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 Shows a cross-sectional view of a support member in an embodiment of the present disclosure;

[0023] Figure 2 Shows a cross-sectional view of a support member in another embodiment of the present disclosure;

[0024] Figure 3Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0025] Figure 4 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0026] Figure 5 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0027] Figure 6 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0028] Figure 7 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0029] Figure 8 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0030] Figure 9 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0031] Figure 10 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0032] Figure 11 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0033] Figure 12 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0034] Figure 13 Shows a cross-sectional view of the support member in another embodiment of the present disclosure;

[0035] Figure 14 Shows a cross-sectional view of the support member in another embodiment of the present disclosure.

[0036] Reference numerals:

[0037] 100, the first support layer; 200, the second support layer; 300, the third support layer; 400, the impact-resistant film layer. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0039] In addition, the present disclosure may repeat reference numerals and / or reference letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. Further, the present disclosure provides examples of various specific processes and materials, but those of ordinary skill in the art will recognize the application of other processes and / or the use of other materials.

[0040] The present disclosure will be described below with reference to the accompanying drawings and specific embodiments:

[0041] In the related art, in a flexible OLED module, a commonly used support member adopts a scheme of compounding a PI double-sided adhesive and a carbon fiber board. However, since the carbon fiber board contains fibrous materials and belongs to an anisotropic material, the mechanical properties of the carbon fiber board are different in different directions, and the tensile modulus varies greatly in different directions. Exemplarily, the tensile modulus of the carbon fiber board in the 0° direction (the direction parallel to the extension direction of the carbon fiber material) is 150 Mpa, and the tensile modulus of the carbon fiber board in the 90° direction (the direction perpendicular to the extension direction of the carbon fiber material) is 250 Mpa. This results in a lower bending stiffness of the support member, poor impact resistance, and poor bending performance, and cannot meet the increasing support requirements of flexible OLED modules. For example, in the related art, although a carbon fiber board with a relatively high tensile modulus in the M series is used, its bending stiffness is still low, indicating that the increase in the tensile modulus of the carbon fiber board has little gain in improving the overall bending stiffness of the support member.

[0042] Regarding the technical problem that the support member composed of polyimide and carbon fiber board has a lower bending stiffness, poor impact resistance, resulting in poor bending performance and cannot meet the increasing support requirements of flexible OLED modules, the present disclosure proposes a support member, as Figures 1 to 4 shown, the support member includes a first support layer 100, a second support layer 200, a third support layer 300, and at least one impact-resistant film layer 400; the first support layer 100, the second support layer 200, and the third support layer 300 are sequentially stacked, and the first support layer 100, the second support layer 200, and the third support layer 300 are respectively composed of a carbon fiber material and a first resin material compounded; the impact-resistant film layer 400 is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials; wherein: the impact-resistant film layer 400 is located on the side of the first support layer 100 away from the second support layer 200; and / or, the impact-resistant film layer 400 is located between the first support layer 100 and the second support layer 200; and / or, the impact-resistant film layer 400 is located between the second support layer 200 and the third support layer 300; and / or, the impact-resistant film layer 400 is located on the side of the third support layer 300 away from the second support layer 200.

[0043] The support member provided in the embodiments of the present disclosure includes three basic support layers, namely, a first support layer 100, a second support layer 200, and a third support layer 300, and an impact-resistant film layer 400 is introduced into the support member, so that the overall impact resistance and bending stiffness of the support member can be improved by using the impact-resistant film layer 400, and the bending performance of the support member can be improved, thereby meeting the increasingly demanding support requirements of flexible OLED modules. At the same time, the first support layer 100, the second support layer 200, and the third support layer 300 are respectively composed of a carbon fiber material and a first resin material; the impact-resistant film layer 400 is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials; then the impact-resistant film layer 400 can be synchronously compounded with the first support layer 100, the second support layer 200, and the third support layer 300 in the support member through a hot pressing process, that is, the module bonding process steps can be reduced, the preparation efficiency can be improved, and the interfacial bonding force between the impact-resistant film layer 400 and the adjacent support layers can be ensured, and the risk of delamination of the support member due to multiple bends can be reduced to a certain extent. In addition, compared with the related art, by introducing the impact-resistant film layer 400 into the support member, the bending stiffness and impact resistance of the support member can be significantly improved. Therefore, on the premise of ensuring that the support member can meet the bending stiffness and impact resistance, the thickness of some support layers in the support member can be appropriately reduced, so that the overall thickness of the support member is reduced, and further the thickness of the display module using the support member is reduced.

[0044] In some embodiments of the present disclosure, the support member can be prepared by the following method:

[0045] Provide carbon fiber prepregs for the first support layer 100, the second support layer 200, and the third support layer 300, that is, impregnate the carbon fiber materials corresponding to each support layer with the corresponding first resin material to obtain carbon fiber prepregs;

[0046] Provide the impact-resistant film layer 400;

[0047] Lay the carbon fiber prepregs of each support layer and the impact-resistant film layer 400 in a mold according to a preset layer structure, and perform heat pressing and curing treatment under certain temperature and pressure conditions to obtain the above support member.

[0048] In some embodiments of the present disclosure, optionally, as Figures 1 to 4 shown, only one layer of impact-resistant film layer 400 can be provided in the support member. As Figure 1 shown, the impact-resistant film layer 400 can be located on the side of the first support layer 100 away from the second support layer 200; as Figure 2 shown, the impact-resistant film layer 400 can be located between the first support layer 100 and the second support layer 200; as Figure 3 shown, the impact-resistant film layer 400 can be located between the second support layer 200 and the third support layer 300; asFigure 4 As shown, the impact-resistant film layer 400 can be located on the side of the third support layer 300 away from the second support layer 200. In these embodiments, by only providing one layer of the impact-resistant film layer 400, the impact resistance and bending stiffness of the support member can be significantly improved, and the bending performance of the support member can be enhanced.

[0049] In some embodiments of the present disclosure, optionally, as Figures 5 to 9 shown, two layers of the impact-resistant film layer 400 can be provided in the support member. As Figure 5 shown, the two layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, between the first support layer 100 and the second support layer 200. As Figure 6 shown, the two layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, between the second support layer 200 and the third support layer 300. As Figure 7 shown, the two layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, on the side of the third support layer 300 away from the second support layer 200. As Figure 8 shown, the two layers of the impact-resistant film layer 400 can be respectively provided between the first support layer 100 and the second support layer 200, between the second support layer 200 and the third support layer 300. As Figure 9 shown, the two layers of the impact-resistant film layer 400 can be respectively provided between the first support layer 100 and the second support layer 200, on the side of the third support layer 300 away from the second support layer 200. In these embodiments, by providing two layers of the impact-resistant film layer 400, the impact resistance and bending stiffness of the support member can be significantly improved, and the bending performance of the support member can be enhanced.

[0050] In some embodiments of the present disclosure, optionally, as Figures 10 to 13 shown, three layers of the impact-resistant film layer 400 can also be provided in the support member. As Figure 10 shown, the three layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, between the first support layer 100 and the second support layer 200, between the second support layer 200 and the third support layer 300. As Figure 11 shown, the three layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, between the first support layer 100 and the second support layer 200, on the side of the third support layer 300 away from the second support layer 200. As Figure 12 shown, the three layers of the impact-resistant film layer 400 can be respectively provided on the side of the first support layer 100 away from the second support layer 200, between the second support layer 200 and the third support layer 300, on the side of the third support layer 300 away from the second support layer 200. As Figure 13As shown, the three-layer impact-resistant film layer 400 can be respectively arranged between the first support layer 100 and the second support layer 200, between the second support layer 200 and the third support layer 300, and on the side of the third support layer 300 away from the second support layer 200. In these embodiments, by arranging the three-layer impact-resistant film layer 400, the impact resistance and bending stiffness of the support member can be significantly improved, and the bending performance of the support member can be enhanced.

[0051] In some embodiments of the present disclosure, optionally, as Figure 14 shown, four impact-resistant film layers 400 can also be provided in the support member. The four impact-resistant film layers 400 can be respectively arranged on the side of the first support layer 100 away from the second support layer 200, between the first support layer 100 and the second support layer 200, between the second support layer 200 and the third support layer 300, and on the side of the third support layer 300 away from the second support layer 200. In these embodiments, by arranging the three-layer impact-resistant film layer 400, the impact resistance and bending stiffness of the support member can be significantly improved, and the bending performance of the support member can be enhanced.

[0052] In the above embodiments of the present disclosure, when the impact-resistant film layer 400 is arranged between two adjacent support layers, the interlayer bonding force between the support layers can be improved; when the impact-resistant film layer 400 is located on the surface of the support member, that is, when the impact-resistant film layer 400 can be located on the side of the first support layer 100 away from the second support layer 200 and / or on the side of the third support layer 300 away from the second support layer 200, the surface flatness of the support member can be improved, which is convenient for the support member to be bonded to the display module through this side to ensure that there is sufficient bonding force between the support member and the display module.

[0053] In some embodiments of the present disclosure, the first resin material in the first support layer 100, the first resin material in the second support layer 200, and the first resin material in the third support layer 300 are homologous resin materials, but the specific types of the three can be the same, or the specific types of any two of them can be the same, or the specific types of all three can be different.

[0054] In some embodiments of the present disclosure, the carbon fiber materials in the first support layer 100, the carbon fiber materials in the second support layer 200, and the carbon fiber materials in the third support layer 300 can be the same, or any two of them can be the same, or all three can be different.

[0055] As an optional implementation manner, the tensile strength of the first resin material is greater than the tensile strength of the second resin material, the tensile modulus of the first resin material is greater than the tensile modulus of the second resin material, and the elongation at break of the second resin material is greater than the elongation at break of the first resin material.

[0056] In some embodiments of the present disclosure, the first support layer 100, the second support layer 200, and the third support layer 300 are respectively formed by compounding a carbon fiber material and a first resin material. Among them, the first resin material can act as a binder in each support layer to bond adjacent support layers together; at the same time, the first resin material also plays a key role in terms of structural strength, fiber protection, and formability. Through the first resin material, the tensile strength and tensile modulus of each support layer can be improved to a certain extent.

[0057] In some embodiments of the present disclosure, although the first resin material and the second resin material are homologous resin materials, the specific types of the first resin material and the second resin material are different, and it is satisfied that the tensile strength of the first resin material is greater than the tensile strength of the second resin material, the tensile modulus of the first resin material is greater than the tensile modulus of the second resin material, and the elongation at break of the second resin material is greater than the elongation at break of the first resin material. By making the tensile strength of the first resin material greater than the tensile strength of the second resin material and the tensile modulus of the first resin material greater than the tensile modulus of the second resin material, the tensile strength and tensile modulus of each support layer can be ensured by the first resin material with relatively large tensile strength and tensile modulus, and then the tensile strength and tensile modulus of the entire support member can be ensured. At the same time, since the elongation at break of the second resin material is greater than the elongation at break of the first resin material, the elongation at break of the impact-resistant film layer 400 prepared from the second resin material is relatively large. Therefore, the impact-resistant film layer 400 with a relatively large elongation at break can not only improve the energy absorption rate of the support member, but also improve the bending stiffness of the support member, thereby improving the overall impact resistance and bending stiffness of the support member. At the same time, since the second resin material and the first resin material are homologous resin materials, during the process of compounding each support layer and the impact-resistant film layer 400 to the support member by a hot pressing process, the second resin material and the first resin material can crosslink during the hot pressing process, so that the mechanical form of the support layer adjacent to the impact-resistant film layer 400 can be improved, and the elongation at break of the support layer adjacent to the impact-resistant film layer 400 can be increased. Through the mutual cooperation of the tensile strength, tensile modulus, elongation at break and other properties of the first resin material and the second resin material, the tensile strength, tensile modulus and elongation at break of the entire support member can be improved to a certain extent, so that the support member can better meet the increasing support requirements of flexible OLED modules.

[0058] As an alternative embodiment, the tensile strength of the first resin material is 1.75 times to 12.00 times that of the second resin material; the tensile modulus of the first resin material is 500.00 times to 1200.00 times that of the second resin material; the elongation at break of the second resin material is 20.00 times to 200.00 times that of the first resin material.

[0059] In some embodiments of the present disclosure, the tensile strength of the first resin material is 1.75 to 12.00 times that of the second resin material, and the tensile modulus of the first resin material is 500.00 to 1200.00 times that of the second resin material, which can ensure that the first resin material has higher tensile strength and tensile modulus compared to the second resin material, so as to ensure that each support layer has greater tensile strength and tensile modulus through the first resin material. At the same time, the elongation at break of the second resin material is 20.00 to 200.00 times that of the first resin material, which can ensure that the second resin material has higher elongation at break compared to the first resin material, that is, the second resin material has better elasticity and impact resistance, so that it can be ensured that the impact-resistant film layer 400 prepared from the second resin material has higher impact resistance and energy absorption rate. After the support member is prepared by hot pressing the impact-resistant film layer 400 and each support layer, the bending stiffness and impact resistance of the support member can be comprehensively improved. By controlling the tensile strength, tensile modulus and elongation at break of the first resin material and the second resin material respectively, the bending stiffness and impact resistance of the support member can be comprehensively improved, so that the support member can better meet the increasing support requirements of flexible OLED modules.

[0060] In some embodiments of the present disclosure, by way of example, the tensile strength of the first resin material can be 1.75 times, 2.00 times, 3.00 times, 4.00 times, 5.00 times, 6.00 times, 7.00 times, 8.00 times, 9.00 times, 10.00 times, 11.00 times, 12.00 times, etc. that of the second resin material; the tensile modulus of the first resin material can be 500.00 times, 550.00 times, 600.00 times, 650.00 times, 700.00 times, 750.00 times, 800.00 times, 850.00 times, 900.00 times, 950.00 times, 1000.00 times, 1050.00 times, 1100.00 times, 1150.00 times, 1200.00 times, etc. that of the second resin material; the elongation at break of the second resin material can be 20.00 times, 30.00 times, 40.00 times, 50.00 times, 60.00 times, 70.00 times, 80.00 times, 90.00 times, 100.00 times, 110.00 times, 120.00 times, 130.00 times, 140.00 times, 150.00 times, 160.00 times, 170.00 times, 180.00 times, 1930.00 times, 200.00 times, etc. that of the first resin material; those skilled in the art can set according to actual needs.

[0061] As an alternative embodiment, the tensile strength of the second resin material is 9.00 MPa to 40.00 MPa, the tensile modulus of the second resin material is 3.00 MPa to 5.00 MPa, and the elongation at break of the second resin material is 200% to 400%.

[0062] In some embodiments of the present disclosure, by making the tensile strength of the second resin material be 9.00 MPa to 40.00 MPa, the tensile modulus of the second resin material be 3.00 MPa to 5.00 MPa, and the elongation at break of the second resin material be 200% to 400%, the elongation at break of the impact-resistant film layer 400 prepared from the second resin material can be relatively large, and the impact resistance of the impact-resistant film layer 400 can be significantly improved. After the impact-resistant film layer 400 and each support layer are made into a support member through a hot pressing process, the bending stiffness and impact resistance of the support member can be comprehensively improved.

[0063] In some embodiments of the present disclosure, for example, the tensile strength of the second resin material can be 9.00 MPa, 10.00 MPa, 11.00 MPa, 12.00 MPa, 13.00 MPa, 14.00 MPa, 15.00 MPa, 16.00 MPa, 17.00 MPa, 18.00 MPa, 19.00 MPa, 20.00 MPa, 21.00 MPa, 22.00 MPa, 23.00 MPa, 24.00 MPa, 25.00 MPa, 26.00 MPa, 27.00 MPa, 28.00 MPa, 29.00 MPa, 30.00 MPa, 31.00 MPa, 32.00 MPa, 33.00 MPa, 34.00 MPa, 35.00 MPa, 36.00 MPa, 37.00 MPa, 38.00 MPa, 39.00 MPa, 40.00 MPa, etc.; the tensile modulus of the second resin material can be 3.00 MPa, 3.50 MPa, 4.00 MPa, 4.50 MPa, 5.00 MPa, etc.; the elongation at break of the second resin material can be 200%, 220%, 240%, 260%, 280%, 300%, 320%, 340%, 360%, 380%, 400%, etc.; those skilled in the art can set according to actual needs.

[0064] As an alternative embodiment, the tensile strength of the first resin material is 70 MPa to 100 MPa, the tensile modulus of the first resin material is 2500 MPa to 3500 MPa, and the elongation at break of the first resin material is 2% to 10%.

[0065] In some embodiments of the present disclosure, by making the tensile strength of the first resin material be 70 MPa to 100 MPa, the tensile modulus of the first resin material be 2500 MPa to 3500 MPa, and the elongation at break of the first resin material be 2% to 10%, the tensile strength and tensile modulus of each support layer formed by the carbon fiber material and the first resin material can be made relatively large, ensuring that each support layer has a relatively large tensile strength and tensile modulus, so that the overall bending stiffness of the support member is relatively large.

[0066] In some embodiments of the present disclosure, by way of example, the tensile strength of the first resin material can be 70 MPa, 72 MPa, 74 MPa, 76 MPa, 78 MPa, 80 MPa, 82 MPa, 84 MPa, 86 MPa, 88 MPa, 90 MPa, 92 MPa, 94 MPa, 96 MPa, 98 MPa, 100 MPa, etc.; the tensile modulus of the first resin material can be 2500 MPa, 2600 MPa, 2700 MPa, 2800 MPa, 2900 MPa, 3000 MPa, 3100 MPa, 3200 MPa, 3300 MPa, 3400 MPa, 3500 MPa, etc.; the elongation at break of the first resin material can be 2%, 3%, 4%, 5%, 6%, 7%, 8%, 9%, 10%, etc.; those skilled in the art can set according to actual requirements.

[0067] As an alternative embodiment, the thickness of the impact-resistant film layer 400 is 10 μm to 200 μm. Further optionally, the thickness of the impact-resistant film layer 400 is 50 μm to 200 μm.

[0068] In some embodiments of the present disclosure, by making the thickness of the impact-resistant film layer 400 be 10 μm to 200 μm, the support member can have relatively high impact resistance and relatively high bending stiffness. Moreover, through research, the present disclosure finds that the thicker the thickness of the impact-resistant film layer 400, the higher the impact resistance and bending stiffness of the support member, but the thickness of the impact-resistant film layer 400 is not the thicker the better. If the thickness of the impact-resistant film layer 400 is too thick, it will cause the overall thickness of the support member to be too thick, affecting the thickness of the display module using the support member. By making the thickness of the impact-resistant film layer 400 be 10 μm to 200 μm, the support member can not only have relatively high impact resistance and relatively high bending stiffness, but also avoid the overall thickness of the support member from being too thick.

[0069] In some embodiments of the present disclosure, by way of example, the thickness of the impact-resistant film layer 400 may be 10μm, 20μm, 30μm, 40μm, 50μm, 60μm, 70μm, 80μm, 90μm, 100μm, 110μm, 120μm, 130μm, 140μm, 150μm, 160μm, 170μm, 180μm, 190μm, 200μm, etc. Those skilled in the art can set it according to actual needs.

[0070] As an alternative embodiment, the first resin material is selected from any one of epoxy resin-based resins, polyurethane resin-based resins, bismaleimide resin-based resins, and polyimide resin-based resins.

[0071] In some embodiments of the present disclosure, the first resin material is selected from any one of epoxy resin-based resins, polyurethane resin-based resins, bismaleimide resin-based resins, and polyimide resin-based resins. At the same time, the second resin material needs to be the same series of resin material as the first resin material. For example, when the first resin material is an epoxy resin-based resin, the second resin material is also an epoxy resin-based resin; when the first resin material is a polyurethane resin-based resin, the second resin material is also a polyurethane resin-based resin; when the first resin material is a bismaleimide resin-based resin, the second resin material is also a bismaleimide resin-based resin; when the first resin material is a polyimide resin-based resin, the second resin material is also a polyimide resin-based resin.

[0072] In some embodiments of the present disclosure, by way of example, when the first resin material and the second resin material are epoxy resin-based resins respectively, when the first support layer 100, the second support layer 200, and the third support layer 300 are synchronously compounded in the support by a hot pressing process, the temperature of the hot pressing process can be 130°C to 170°C. For example, the temperature of the hot pressing process can be 150°C. At the same time, it is necessary to ensure that the material of the impact-resistant film layer 400 does not change during the hot pressing process. For example, under the temperature condition of 200°C, the material of the impact-resistant film layer 400 does not change within 24 hours to ensure that the impact-resistant film layer 400 can maintain its basic performance during the hot pressing process.

[0073] As an alternative embodiment, the carbon fiber material in the first support layer 100, the carbon fiber material in the second support layer 200, and the carbon fiber material in the third support layer 300 are each independently selected from any one or several of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber.

[0074] In some embodiments of the present disclosure, optionally, the tensile strength and tensile modulus of each support layer can be adjusted by separately adjusting the carbon fiber materials in the first support layer 100, the second support layer 200, and the third support layer 300, so as to achieve the purpose of adjusting the overall bending stiffness of the support member.

[0075] In some embodiments of the present disclosure, optionally, the carbon fiber materials in the first support layer 100, the second support layer 200, and the third support layer 300 are each independently selected from any one or more of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber. Exemplarily, the carbon fiber materials in the first support layer 100 and the third support layer 300 can be T700 carbon fiber, and the carbon fiber material in the second support layer 200 can be M40 carbon fiber; the carbon fiber material in the first support layer 100 can be T700 carbon fiber, the carbon fiber material in the second support layer 200 can be M40 carbon fiber, and the carbon fiber material in the third support layer 300 can be T800 carbon fiber. The carbon fiber material in the first support layer 100 can be T800 carbon fiber, the carbon fiber material in the second support layer 200 can be M55 carbon fiber, and the carbon fiber material in the third support layer 300 can be T700 carbon fiber.

[0076] It should be noted that the T value in T700 carbon fiber, T800 carbon fiber, and T1000 carbon fiber represents the tensile strength of the carbon fiber. The larger the T value, the higher the tensile strength of the carbon fiber. For example, the tensile strength of T800 carbon fiber is greater than that of T700 carbon fiber. The M value in M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber represents the tensile modulus of the carbon fiber. The larger the M value, the higher the tensile modulus of the carbon fiber. T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber can be carbon fibers purchased from Toray Industries, Inc. of Japan, and their tensile strength and tensile modulus can refer to the data sheet of Toray Industries, Inc.'s carbon fiber materials.

[0077] In some embodiments of the present disclosure, optionally, the extending direction of the carbon fiber material in the first support layer 100 is perpendicular to the extending direction of the carbon fiber material in the second support layer 200, and the extending direction of the carbon fiber material in the third support layer 300 is perpendicular to the extending direction of the carbon fiber material in the second support layer 200, so that the support strength of the support member in each direction can be improved, and the defect that the support strength of the support member in each direction varies greatly due to the anisotropy of the carbon fiber material can be reduced to a certain extent.

[0078] As an alternative embodiment, optionally, the content of the first resin material in the first support layer 100 is greater than that in the second support layer 200; and / or, the content of the first resin material in the third support layer 300 is greater than that in the second support layer 200.

[0079] In some embodiments of the present disclosure, by making the content of the first resin material in the first support layer 100 greater than that in the second support layer 200, the flatness of the first support layer 100 can be made higher, thereby improving the appearance quality of the first support layer 100 and facilitating bonding with structures such as display panels. Especially when the first support layer 100 is not covered by the impact-resistant film layer 400 and is located outside the support member, the appearance requirements for the first support layer 100 are relatively high. By making the content of the first resin material in the first support layer 100 greater than that in the second support layer 200, the flatness and appearance quality of the first support layer 100 can be ensured. Similarly, by making the content of the first resin material in the third support layer 300 greater than that in the second support layer 200, the flatness of the third support layer 300 can be made higher, thereby improving the appearance quality of the third support layer 300 and facilitating bonding with structures such as display panels. Especially when the third support layer 300 is not covered by the impact-resistant film layer 400 and is located outside the support member, the appearance requirements for the third support layer 300 are relatively high. By making the content of the first resin material in the third support layer 300 greater than that in the second support layer 200, the flatness and appearance quality of the third support layer 300 can be ensured.

[0080] It should be noted that the content of the first resin material in each support layer refers to the percentage of the mass of the first resin material in the total mass of each support layer. For example, when the content of the first resin material in the first support layer 100 is 40%, it means that when the total mass of the carbon fiber material and the first resin material in the second support layer 200 is 100 g, the mass of the first resin material is 40 g.

[0081] As an alternative embodiment, the content of the first resin material in the first support layer 100 is 25% - 50%, and / or, the content of the first resin material in the second support layer 200 is 25% - 50%, and / or, the content of the first resin material in the third support layer 300 is 25% - 50%.

[0082] In some embodiments of the present disclosure, optionally, the content of the first resin material in the first support layer 100, the content of the first resin material in the second support layer 200, and the content of the first resin material in the third support layer 300 can be adjusted respectively to adjust the tensile strength, tensile modulus, and appearance quality of each support layer, thereby achieving the purpose of adjusting the bending strength and appearance quality of the entire support member.

[0083] In some embodiments of the present disclosure, optionally, the content of the first resin material in the first support layer 100 is 25% to 50%. Exemplarily, the content of the first resin material in the first support layer 100 can be 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc., and those skilled in the art can set it according to actual needs.

[0084] In some embodiments of the present disclosure, optionally, the content of the first resin material in the second support layer 200 is 25% to 50%. Exemplarily, the content of the first resin material in the second support layer 200 can be 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc., and those skilled in the art can set it according to actual needs.

[0085] In some embodiments of the present disclosure, optionally, the content of the first resin material in the third support layer 300 is 25% to 50%. Exemplarily, the content of the first resin material in the third support layer 300 can be 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, etc., and those skilled in the art can set it according to actual needs.

[0086] In some embodiments of the present disclosure, optionally, as Figure 1 , Figure 2 , Figures 5 to 14 shown, when the first support layer 100 is disposed adjacent to the impact-resistant film layer 400, the content of the first resin material in the first support layer 100 can be appropriately reduced, and the content of the first resin material in the first support layer 100 can be 25% to 40%.

[0087] In some embodiments of the present disclosure, optionally, as Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figures 8 to 14As shown, when the second support layer 200 is disposed adjacent to the impact-resistant film layer 400, the content of the first resin material in the second support layer 200 can be appropriately reduced, and the content of the first resin material in the second support layer 200 can be 25% to 40%.

[0088] In some embodiments of the present disclosure, optionally, as Figure 3 , Figure 4 , Figures 6 to 14 shown, when the third support layer 300 is disposed adjacent to the impact-resistant film layer 400, the content of the first resin material in the third support layer 300 can be appropriately reduced, and the content of the first resin material in the third support layer 300 can be 25% to 40%.

[0089] As an alternative embodiment, the weight per unit area of the carbon fiber material in the first support layer 100 is 15 g / m 2 to 40 g / m 2 ; and / or, the weight per unit area of the carbon fiber material in the second support layer 200 is 50 g / m 2 to 150 g / m 2 ; and / or, the weight per unit area of the carbon fiber material in the third support layer 300 is 15 g / m 2 to 40 g / m 2 .

[0090] In some embodiments of the present disclosure, optionally, by respectively adjusting the weight per unit area of the carbon fiber material in the first support layer 100, the weight per unit area of the carbon fiber material in the second support layer 200, and the weight per unit area of the carbon fiber material in the second support layer 200, the thickness, tensile strength, and tensile modulus of each support layer can be adjusted, and further the purpose of adjusting the overall thickness and bending stiffness of the support member can be achieved.

[0091] In some embodiments of the present disclosure, optionally, the weight per unit area of the carbon fiber material in the first support layer 100 is 15 g / m 2 to 40 g / m 2 . Exemplarily, the weight per unit area of the carbon fiber material in the first support layer 100 can be 15 g / m 2 , 16 g / m 2 , 17 g / m 2 , 18 g / m 2 , 19 g / m 2 , 20 g / m 2 , 21 g / m 2 , 22 g / m 2 , 23 g / m 2 , 24 g / m 2 , 25 g / m 2 , 26 g / m 2 , 27 g / m 2 , 28 g / m 2, 29 g / m 2 , 30 g / m 2 , 31 g / m 2 , 32 g / m 2 , 33 g / m 2 , 34 g / m 2 , 35 g / m 2 , 36 g / m 2 , 37 g / m 2 , 38 g / m 2 , 39 g / m 2 , 40 g / m 2 and so on. Those skilled in the art can set according to actual needs.

[0092] In some embodiments of the present disclosure, optionally, the gram weight of the carbon fiber material in the second support layer 200 is 50 g / m 2 ~150 g / m 2 . Exemplarily, the gram weight of the carbon fiber material in the second support layer 200 can be 50 g / m 2 , 52 g / m 2 , 54 g / m 2 , 56 g / m 2 , 58 g / m 2 , 60 g / m 2 , 62 g / m 2 , 64 g / m 2 , 65 g / m 2 , 680 g / m 2 , 70 g / m 2 , 72 g / m 2 , 74 g / m 2 , 76 g / m 2 , 78 g / m 2 , 80 g / m 2 , 82 g / m 2 , 84 g / m 2 , 86 g / m 2 , 88 g / m 2 , 90 g / m 2 , 92 g / m 2 , 94 g / m 2 , 96 g / m 2 , 98 g / m 2 , 100 g / m 2 , 102 g / m 2 , 104 g / m 2 , 106 g / m 2 , 108 g / m 2 , 110 g / m 2 , 112 g / m 2 , 114 g / m2 , 116 g / m 2 , 118 g / m 2 , 120 g / m 2 , 122 g / m 2 , 124 g / m 2 , 126 g / m 2 , 128 g / m 2 , 130 g / m 2 , 132 g / m 2 , 134 g / m 2 , 136 g / m 2 , 138 g / m 2 , 140 g / m 2 , 142 g / m 2 , 144 g / m 2 , 146 g / m 2 , 148 g / m 2 , 150 g / m 2 and so on. Those skilled in the art can set according to actual requirements.

[0093] In some embodiments of the present disclosure, optionally, the grammage of the carbon fiber material in the third support layer 300 is 15 g / m 2 ~40 g / m 2 . Exemplarily, the grammage of the carbon fiber material in the third support layer 300 can be 15 g / m 2 , 16 g / m 2 , 17 g / m 2 , 18 g / m 2 , 19 g / m 2 , 20 g / m 2 , 21 g / m 2 , 22 g / m 2 , 23 g / m 2 , 24 g / m 2 , 25 g / m 2 , 26 g / m 2 , 27 g / m 2 , 28 g / m 2 , 29 g / m 2 , 30 g / m 2 , 31 g / m 2 , 32 g / m 2 , 33 g / m 2 , 34 g / m 2 , 35 g / m 2 , 36 g / m 2 , 37 g / m 2 , 38 g / m 2 , 39 g / m 2 , 40 g / m2 And so on, those skilled in the art can set according to actual needs.

[0094] Table 1 Test results of the mechanical properties of the support members in the examples and comparative examples

[0095]

[0096] As shown in Table 1, the test results of the mechanical properties of the support members in the embodiments and comparative examples of the present disclosure are shown. Among them:

[0097] The structure of the support member in Example 1 is as Figure 1 shown. The carbon fiber material in the first support layer 100 is T700 carbon fiber, and the gram weight of the carbon fiber material in the first support layer 100 is 25 g / m 2 , the first resin material in the first support layer 100 is an epoxy resin-based resin material, and the content of the first resin material in the first support layer 100 is 40%; the carbon fiber material in the second support layer 200 is M40 carbon fiber, and the gram weight of the carbon fiber material in the second support layer 200 is 110 g / m 2 , the first resin material in the second support layer 200 is an epoxy resin-based resin material, and the content of the first resin material in the second support layer 200 is 30%; the carbon fiber material in the third support layer 300 is T700 carbon fiber, and the gram weight of the carbon fiber material in the third support layer 300 is 25 g / m 2 , the first resin material in the third support layer 300 is an epoxy resin-based resin material, and the content of the first resin material in the third support layer 300 is 40%; the first resin materials in each support layer are the same, the tensile strength of the first resin material is 85 Mpa, the tensile modulus of the first resin material is 3000 Mpa, and the elongation at break of the first resin material is 6%; the thickness of the impact-resistant film layer 400 is 50 μm, the second resin material of the impact-resistant film layer 400 is an epoxy resin-based resin material, the tensile strength of the second resin material is 25 Mpa, the tensile modulus of the second resin material is 4 Mpa, and the elongation at break of the second resin material is 300%.

[0098] The structure of the support member in Example 2 is as Figure 2 shown. The carbon fiber material in the first support layer 100 is T700 carbon fiber, and the gram weight of the carbon fiber material in the first support layer 100 is 25 g / m 2 , the first resin material in the first support layer 100 is an epoxy resin-based resin material, and the content of the first resin material in the first support layer 100 is 40%; the carbon fiber material in the second support layer 200 is M40 carbon fiber, and the gram weight of the carbon fiber material in the second support layer 200 is 110 g / m 2, the first resin material in the second support layer 200 is an epoxy resin-based resin material, and the content of the first resin material in the second support layer 200 is 30%; the carbon fiber material in the third support layer 300 is T700 carbon fiber, and the gram weight of the carbon fiber material in the third support layer 300 is 25 g / m 2 , the first resin material in the third support layer 300 is an epoxy resin-based resin material, and the content of the first resin material in the third support layer 300 is 40%; the first resin material in each support layer is the same, the tensile strength of the first resin material is 85 Mpa, the tensile modulus of the first resin material is 3000 Mpa, and the elongation at break of the first resin material is 6%; the thickness of the impact-resistant film layer 400 is 100 μm, the second resin material of the impact-resistant film layer 400 is an epoxy resin-based resin material, the tensile strength of the second resin material is 25 Mpa, the tensile modulus of the second resin material is 4 Mpa, and the elongation at break of the second resin material is 300%.

[0099] The support structure of Example 3 is as shown in Figure 8 , the carbon fiber material in the first support layer 100 is T700 carbon fiber, and the gram weight of the carbon fiber material in the first support layer 100 is 25 g / m 2 , the first resin material in the first support layer 100 is an epoxy resin-based resin material, and the content of the first resin material in the first support layer 100 is 40%; the carbon fiber material in the second support layer 200 is M40 carbon fiber, and the gram weight of the carbon fiber material in the second support layer 200 is 110 g / m 2 , the first resin material in the second support layer 200 is an epoxy resin-based resin material, and the content of the first resin material in the second support layer 200 is 30%; the carbon fiber material in the third support layer 300 is T700 carbon fiber, and the gram weight of the carbon fiber material in the third support layer 300 is 25 g / m 2 , the first resin material in the third support layer 300 is an epoxy resin-based resin material, and the content of the first resin material in the third support layer 300 is 40%; the first resin material in each support layer is the same, the tensile strength of the first resin material is 85 Mpa, the tensile modulus of the first resin material is 3000 Mpa, and the elongation at break of the first resin material is 6%; the thickness of each impact-resistant film layer 400 is 100 μm, the second resin material of the impact-resistant film layer 400 is an epoxy resin-based resin material, the tensile strength of the second resin material is 25 Mpa, the tensile modulus of the second resin material is 4 Mpa, and the elongation at break of the second resin material is 300%.

[0100] The support structure of Example 4 is as shown in Figure 5 , the carbon fiber material in the first support layer 100 is T700 carbon fiber, and the gram weight of the carbon fiber material in the first support layer 100 is 25 g / m 2, the first resin material in the first support layer 100 is an epoxy resin-based resin material, and the content of the first resin material in the first support layer 100 is 40%; the carbon fiber material in the second support layer 200 is M40 carbon fiber, and the gram weight of the carbon fiber material in the second support layer 200 is 110 g / m 2 , the first resin material in the second support layer 200 is an epoxy resin-based resin material, and the content of the first resin material in the second support layer 200 is 30%; the carbon fiber material in the third support layer 300 is T700 carbon fiber, and the gram weight of the carbon fiber material in the third support layer 300 is 25 g / m 2 , the first resin material in the third support layer 300 is an epoxy resin-based resin material, and the content of the first resin material in the third support layer 300 is 40%; the first resin material in each support layer is the same, the tensile strength of the first resin material is 85 Mpa, the tensile modulus of the first resin material is 3000 Mpa, and the elongation at break of the first resin material is 6%; the thicknesses of the respective impact-resistant film layers 400 are 50 μm, the second resin material of the impact-resistant film layer 400 is an epoxy resin-based resin material, the tensile strength of the second resin material is 25 Mpa, the tensile modulus of the second resin material is 4 Mpa, and the elongation at break of the second resin material is 300%.

[0101] The support of Comparative Example 1 includes a first support layer 100, a second support layer 200, and a third support layer 300 stacked in sequence. The carbon fiber material in the first support layer 100 is T700 carbon fiber, and the gram weight of the carbon fiber material in the first support layer 100 is 25 g / m 2 , the first resin material in the first support layer 100 is an epoxy resin-based resin material, and the content of the first resin material in the first support layer 100 is 40%; the carbon fiber material in the second support layer 200 is M40 carbon fiber, and the gram weight of the carbon fiber material in the second support layer 200 is 110 g / m 2 , the first resin material in the second support layer 200 is an epoxy resin-based resin material, and the content of the first resin material in the second support layer 200 is 30%; the carbon fiber material in the third support layer 300 is T700 carbon fiber, and the gram weight of the carbon fiber material in the third support layer 300 is 25 g / m 2 , the first resin material in the third support layer 300 is an epoxy resin-based resin material, and the content of the first resin material in the third support layer 300 is 40%; the first resin material in each support layer is the same, the tensile strength of the first resin material is 85 Mpa, the tensile modulus of the first resin material is 3000 Mpa, and the elongation at break of the first resin material is 6%.

[0102] As can be seen from Table 1, compared with Comparative Example 1, the support members of Examples 1 to 3 of the present disclosure can improve the bending stiffness of the support members in both directions of the carbon fiber material by introducing the impact-resistant film layer 400, and can increase the bending stiffness of the support members by more than 20%. Moreover, as the thickness of the impact-resistant film layer 400 increases, the improvement of the bending stiffness of the support member in the 90° direction of the carbon fiber material is relatively more obvious. At the same time, compared with Comparative Example 1, the support members of Examples 1 to 3 of the present disclosure can significantly improve the energy absorption rate of the support members, that is, can significantly improve the impact resistance of the support members, and as the thickness of the impact-resistant film layer 400 increases, the impact resistance of the support members can also increase synchronously.

[0103] Based on the same inventive concept, the embodiments of the present disclosure also propose a display module, which includes the above-mentioned support member.

[0104] Since the display module provided by the present invention includes the support member of the above technical solution, the display module provided by the present invention has all the beneficial effects of the above support member, which will not be elaborated here.

[0105] In some embodiments of the present disclosure, the display module includes a display panel and a support member, and the non-display side of the display panel is attached to the support member. Optionally, a back film (BF) may also be provided between the display panel and the support member.

[0106] Based on the same inventive concept, the embodiments of the present disclosure also propose a display device, which includes the above-mentioned display module.

[0107] Since the display device provided by the present invention includes the display module of the above technical solution, the display device provided by the present invention has all the beneficial effects of the above display module, which will not be elaborated here.

[0108] In some embodiments of the present disclosure, the display device may be a product or component with a display function, such as a mobile phone, a tablet computer, a notebook computer, a television, a watch, a digital camera, a navigator, etc., which includes display modules such as liquid crystal displays, electronic papers, and OLED displays.

[0109] In this disclosure, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and diagonally below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0110] In addition, in this disclosure, descriptions such as "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of this disclosure, "a plurality of" means two or more unless otherwise clearly and specifically defined.

[0111] In the description of this specification, descriptions with reference to terms such as "an embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this disclosure. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0112] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this disclosure.

[0113] Although the embodiments of this disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of this disclosure. The scope of this disclosure is defined by the claims and their equivalents.

Claims

1. A support member, characterized in that, The support member includes a first support layer, a second support layer, a third support layer, and at least one impact-resistant film layer; the first support layer, the second support layer, and the third support layer are stacked in sequence, and the first support layer, the second support layer, and the third support layer are respectively formed by compounding carbon fiber material and a first resin material; the impact-resistant film layer is prepared from a second resin material, and the second resin material and the first resin material are homologous resin materials; wherein: The impact-resistant film layer is located on the side of the first support layer away from the second support layer; and / or, The impact-resistant film layer is located between the first support layer and the second support layer; and / or, The impact-resistant film layer is located between the second support layer and the third support layer; and / or, The impact-resistant film layer is located on the side of the third support layer away from the second support layer.

2. The support member according to claim 1, wherein, The tensile strength of the first resin material is greater than the tensile strength of the second resin material, the tensile modulus of the first resin material is greater than the tensile modulus of the second resin material, and the elongation at break of the second resin material is greater than the elongation at break of the first resin material.

3. The support member according to claim 2, characterized in that, The tensile strength of the first resin material is 1.75 to 12.00 times that of the second resin material; the tensile modulus of the first resin material is 500.00 to 1200.00 times that of the second resin material; the elongation at break of the second resin material is 20.00 to 200.00 times that of the first resin material.

4. The support member according to claim 3, characterized in that The tensile strength of the second resin material is 9.00 MPa to 40.00 MPa, the tensile modulus of the second resin material is 3.00 MPa to 5.00 MPa, and the elongation at break of the second resin material is 200% to 400%.

5. The support member according to claim 4, wherein The tensile strength of the first resin material is 70 MPa to 100 MPa, the tensile modulus of the first resin material is 2500 MPa to 3500 MPa, and the elongation at break of the first resin material is 2% to 10%.

6. The support member according to claim 1, characterized in that, The thickness of the impact-resistant film layer is 10 μm to 200 μm.

7. The support member according to claim 6, characterized in that, The thickness of the impact-resistant film layer is 50 μm to 200 μm.

8. The support member according to claim 1, characterized in that, The first resin material is selected from any one of epoxy resin-based resins, polyurethane-based resins, bismaleimide resin-based resins, and polyimide resin-based resins.

9. The support member according to any one of claims 1 to 8, characterized in that, The carbon fiber material in the first support layer, the carbon fiber material in the second support layer, and the carbon fiber material in the third support layer are each independently selected from any one or more of T700 carbon fiber, T800 carbon fiber, T1000 carbon fiber, M40 carbon fiber, M46 carbon fiber, M55 carbon fiber, and M60 carbon fiber.

10. The support member according to claim 9, characterized in that, The content of the first resin material in the first support layer is greater than the content of the first resin material in the second support layer; and / or, the content of the first resin material in the third support layer is greater than the content of the first resin material in the second support layer.

11. The support member according to claim 10, characterized in that, The content of the first resin material in the first support layer is 25% to 50%, and / or the content of the first resin material in the second support layer is 25% to 50%, and / or the content of the first resin material in the third support layer is 25% to 50%.

12. The support member according to claim 10, wherein, The grammage of the carbon fiber material in the first support layer is 15 g / m 2 ~40 g / m 2 ; and / or, The grammage of the carbon fiber material in the second support layer is 50 g / m 2 ~150 g / m 2 ; and / or, The grammage of the carbon fiber material in the third support layer is 15 g / m 2 ~40 g / m 2 .

13. A display module, characterized in that, The display module includes the support member as described in any one of claims 1 to 12.

14. A display device, characterized in that, The display device includes the display module as described in claim 13.

Images