A folding support assembly, a folding display panel and an electronic device

Abstract

This application discloses a folding support component, a folding display panel, and an electronic device, relating to the field of folding technology. The folding support component is prepared by using a novel material composed of whiskers, carbon fiber filaments, and resin. The presence of whiskers allows most of the non-conductive carbon fiber filaments to be indirectly connected, thereby enhancing the overall toughness of the folding support component and enabling it to achieve a certain yield strength. This improves the drop resistance and heat dissipation capacity of the folding support component. Furthermore, adjusting the mass ratio of the three components can break the continuity of internal stress. Moreover, based on the process of preparing the folding support component using the novel material, there is no rolling process like that used for stainless steel, meaning there is almost no processing internal stress. Therefore, the stress of the folding support component prepared from this novel material of whiskers, resin, and carbon fiber filaments is relatively small.

Description

Technical Field

[0001] This application relates to the field of folding technology, and in particular to a folding support component, a folding display panel, and an electronic device. Background Technology

[0002] With the development of flexible display technology, flexible screens (also known as flexible displays) are increasingly being used in terminal devices. In terminal devices, flexible screens are usually combined with folding support components, which are used to enable the flexible screen to bend and unfold, thus forming a foldable screen in the terminal device.

[0003] Currently, existing technologies either use stainless steel or carbon fiber to make folding support components. However, stainless steel folding support components have technical problems such as high weight and high stress, while carbon fiber folding support components, although light in weight and low in stress, have almost no yield strength, making them unresistant to drops. Summary of the Invention

[0004] In view of the above problems, this application provides a folding support assembly, a folding display panel, and an electronic device to achieve the goal of a folding support assembly that integrates excellent performance such as weight reduction, low stress, and drop resistance. The specific solution is as follows:

[0005] The first aspect of this application provides a folding support assembly, the folding support assembly comprising: resin, a first carbon fiber filament layer, a second carbon fiber filament layer, and whiskers, wherein the resin coats the first carbon fiber filament layer, the second carbon fiber filament layer, and the whiskers;

[0006] The first carbon fiber filament layer and the second carbon fiber filament layer are arranged in a first direction, overlapping each other. The extension direction of the carbon fiber filaments in the first carbon fiber filament layer intersects with the extension direction of the carbon fiber filaments in the second carbon fiber filament layer. The first direction is perpendicular to the plane where the folding support assembly is located.

[0007] The whiskers are dispersed between the carbon fibers in the first carbon fiber layer and the second carbon fiber layer.

[0008] A second aspect of this application provides a foldable display panel, the foldable display panel including the foldable support component described above.

[0009] A third aspect of this application provides an electronic device, the electronic device including the folding support assembly described above;

[0010] or,

[0011] The electronic device includes the foldable display panel described above.

[0012] By employing the above technical solutions, the folding support assembly, folding display panel, and electronic device provided in this application, although filled with resin between the carbon fiber filaments, utilize whiskers to indirectly connect most of the non-conductive carbon fiber filaments. This indirectly allows the excellent mechanical properties of the carbon fiber filaments to be maintained to a certain extent, thereby enhancing the overall toughness of the folding support assembly and enabling it to achieve a certain yield strength, thus improving its drop resistance. Furthermore, the presence of whiskers indirectly connects most of the non-conductive carbon fiber filaments that were originally filled with resin, obviously improving the heat dissipation capacity of the folding support assembly. Further, by flexibly adjusting the mass ratio of whiskers, resin, and carbon fiber filaments, the anisotropy of the carbon fiber filaments, whiskers, and resin in a specific ratio can be used to break the continuity of internal stress. Additionally, the folding support assembly made from this new material of whiskers, resin, and carbon fiber filaments does not require the rolling process used for stainless steel, meaning there is almost no processing internal stress. Therefore, the stress in the folding support assembly made from this new material of whiskers, resin, and carbon fiber filaments is relatively low. Attached Figure Description

[0013] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0014] Figure 1 This is a top view schematic diagram of the principle structure of a folding support assembly provided in an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of the left-side principle structure of a folding support assembly provided in an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the right-side principle structure of a folding support assembly provided in an embodiment of the present invention;

[0017] Figure 4 A schematic diagram of the principle structure of another folding support component provided in an embodiment of the present invention (left view).

[0018] Figure 5 A schematic diagram of the principle structure of another folding support component provided in an embodiment of the present invention;

[0019] Figure 6 A schematic diagram of the principle structure of another folding support component provided in an embodiment of the present invention;

[0020] Figure 7A schematic diagram of the principle structure of another folding support component provided in an embodiment of the present invention;

[0021] Figure 8 This is a schematic diagram illustrating the principle structure of a foldable display panel provided in an embodiment of the present invention. Detailed Implementation

[0022] The embodiments of this application are described below with reference to the accompanying drawings. The terminology used in the implementation section of this application is for explaining specific embodiments only and is not intended to limit the scope of this application.

[0023] The embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art will recognize that, with technological advancements and the emergence of new scenarios, the technical solutions provided in the embodiments of this application are equally applicable to similar technical problems.

[0024] Based on the information recorded in the background art, the density of carbon fiber is 1.7 g / cm³. 3 The density of stainless steel is 7.9 g / cm³. 3 Obviously, carbon fiber folding support components are significantly lighter than stainless steel folding support components.

[0025] Furthermore, from the perspective of the manufacturing process, carbon fiber is made by hot pressing prepreg, which is different from the rolling process of stainless steel. This allows the stress of carbon fiber folding support components to be much lower than that of stainless steel folding support components.

[0026] Therefore, most folding support components in the industry are currently made of carbon fiber. Existing carbon fiber folding support components fill the spaces between carbon fiber filaments with resin. Carbon fiber filaments usually have high modulus and strength, but due to the influence of the filling resin, the excellent mechanical properties of carbon fiber filaments cannot be maintained as a whole, resulting in low overall strength of carbon fiber folding support components and high brittleness of carbon fiber filaments. Ultimately, this makes carbon fiber folding support components not resistant to drops.

[0027] Furthermore, due to the influence of the filling resin, the carbon fiber filaments are not conductive, which in turn results in poor heat dissipation of the carbon fiber folded support assembly.

[0028] Based on this, this application provides a novel folding support component, a folding display panel, and an electronic device. The folding support component is made of a novel material, which includes at least resin, carbon fiber filaments, and whiskers, thereby obtaining a folding support component that integrates excellent properties such as weight reduction, low stress, and drop resistance.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] refer to Figure 1 , Figure 1 This is a top view schematic diagram of the principle structure of a folding support assembly provided in an embodiment of the present invention, with reference to... Figure 2 , Figure 2 This is a left-side view schematic diagram of the principle structure of a folding support assembly provided in an embodiment of the present invention, with reference to... Figure 3 , Figure 3 This is a right-side view schematic diagram of the principle structure of a folding support assembly provided in an embodiment of the present invention. The folding support assembly provided in this embodiment includes: resin 11, a first carbon fiber filament layer 12, a second carbon fiber filament layer 13, and whiskers 14. The resin 11 covers the first carbon fiber filament layer 12, the second carbon fiber filament layer 13, and the whiskers 14. It should be noted that, in Figure 1 and Figure 3 Whiskers 14 are not shown in the diagram, only in Figure 2 The middle figure shows a portion of whiskers 14, the number and shape of which are merely illustrative examples, and the label 10 indicates the patterned area.

[0031] The first carbon fiber filament layer 12 and the second carbon fiber filament layer 13 are arranged in a staggered manner along the first direction X. The extension direction of the carbon fiber filaments in the first carbon fiber filament layer 12 intersects with the extension direction of the carbon fiber filaments in the second carbon fiber filament layer 13. The first direction X is perpendicular to the plane where the folding support assembly is located.

[0032] Whiskers 14 are dispersed between carbon fibers in the first carbon fiber layer 12 and the second carbon fiber layer 13.

[0033] Specifically, in this embodiment of the invention, the extension direction of the carbon fiber filaments in the first carbon fiber filament layer 12 is perpendicular to the extension direction of the carbon fiber filaments in the second carbon fiber filament layer 13 as an example. Figure 2 As shown, the carbon fiber filaments in the first carbon fiber filament layer 12 are arranged in a 0° direction, and the carbon fiber filaments in the second carbon fiber filament layer 13 are arranged in a 90° direction. This can also be understood as the carbon fiber filaments in the first carbon fiber filament layer 12 extending longitudinally on the plane where the folding support assembly is located, and the carbon fiber filaments in the second carbon fiber filament layer 13 extending laterally on the plane where the folding support assembly is located. The folding axis of the folding support assembly extends longitudinally on the plane where the folding support assembly is located.

[0034] The whisker 14 has a breaking elongation range of 3%-12%. The resin 11 coats the first carbon fiber filament layer 12 and the second carbon fiber filament layer 13, which are composed of carbon fiber filaments, as well as the whisker 14. Although the carbon fiber filaments are also filled with resin 11, the presence of the whisker 14 allows most of the non-conductive carbon fiber filaments to be indirectly connected, which in turn allows the excellent mechanical properties of the carbon fiber filaments to be continued to a certain extent. This enhances the overall toughness of the folding support component, enabling the folding support component to obtain a certain yield strength, thereby improving the drop resistance of the folding support component.

[0035] Furthermore, the presence of whiskers 14 allows most of the non-conductive carbon fiber filaments that were originally filled with resin 11 to be indirectly connected through whiskers, which obviously also improves the heat dissipation capacity of this folded support assembly.

[0036] Furthermore, since this new material is composed of whiskers 14, resin 11, and carbon fiber filaments, the mass ratio of whiskers 14, resin 11, and carbon fiber filaments can be flexibly adjusted in this application. Thus, an overall anisotropy can be obtained by using a specific ratio of carbon fiber filaments, whiskers 14, and resin 11 to break the continuity of internal stress (i.e., there are stress buffer nodes). In addition, the folding support assembly made of this new material of whiskers 14, resin 11, and carbon fiber filaments does not have the rolling process of stainless steel, that is, there is almost no internal stress from processing. Therefore, the stress of the folding support assembly made of this new material of whiskers 14, resin 11, and carbon fiber filaments will also be relatively small.

[0037] In summary, the folding support assembly made from the new material whisker 14, resin 11 and carbon fiber filament is a folding support assembly that integrates excellent properties such as weight reduction, low stress, drop resistance and strong heat dissipation.

[0038] Optionally, in another embodiment of the present invention, the resin 11 in the folding support assembly accounts for 20%-30% by mass, the whiskers 14 account for 5%-20% by mass, and the carbon fiber filaments in the first carbon fiber filament layer 12 and the second carbon fiber filament layer 13 account for 50%-70% by mass.

[0039] Specifically, in the embodiments of the present invention, the mass ratios of whiskers 14, resin 11, and carbon fiber filaments can be flexibly adjusted within their respective defined ranges. This allows for the use of a specific ratio of carbon fiber filaments, whiskers 14, and resin 11 to achieve overall anisotropy, thereby disrupting the continuity of internal stress. Furthermore, by flexibly adjusting the mass ratios of whiskers 14, resin 11, and carbon fiber filaments within their respective defined ranges, a folded support assembly with the desired weighted average density can also be obtained.

[0040] Optionally, in another embodiment of the present invention, by flexibly adjusting the mass ratios of whiskers 14, resin 11, and carbon fiber filaments within their respective defined ranges, a weighted average density range of 1.7 g / cm³ can be obtained. 3 -2.2g / cm 3 Folding support components.

[0041] Specifically, in this embodiment of the invention, the weighted average density range is 1.7 g / cm³. 3 -2.2g / cm 3 The density of the folded support component is not significantly different from that of existing carbon fiber folded support components; that is, the weighted average density ranges from 1.7 g / cm³. 3 -2.2g / cm 3 The weight of the folding support component is very close to that of the existing carbon fiber folding support component. The addition of whiskers does not increase the weight of the folding support component. Moreover, it is still significantly lighter than the existing stainless steel folding support component, which is in line with the current lightweight design of the equipment.

[0042] Optionally, in another embodiment of the present invention, by flexibly adjusting the mass ratio of whiskers 14, resin 11 and carbon fiber filaments within their respective defined ranges, a folding support assembly with a stress of less than 625 MPa before patterning can be obtained.

[0043] Specifically, in the embodiments of the present invention, the stress of the stainless steel folding support assembly before patterning is usually greater than 1200 MPa. However, in the embodiments of this application, by flexibly adjusting the mass ratio of whiskers 14, resin 11 and carbon fiber filaments within their respective limited ranges, a folding support assembly with a stress of less than 625 MPa before patterning can be obtained. This parameter is much lower than the corresponding parameter of the stainless steel folding support assembly (i.e., 625 MPa < 1200 MPa). This design is very beneficial for deformation compensation during bending of the folding support assembly.

[0044] Optionally, in another embodiment of the present invention, by flexibly adjusting the mass ratio of whiskers 14, resin 11 and carbon fiber filaments within their respective defined ranges, a folded support assembly with a yield strength greater than 400 PMa can be obtained.

[0045] Specifically, in this embodiment of the invention, existing carbon fiber folding support components fill the spaces between carbon fiber filaments with resin. While carbon fiber filaments typically have high modulus and strength, the excellent mechanical properties of the filaments cannot be fully maintained due to the resin filling. This results in lower overall strength and higher brittleness of the carbon fiber folding support components, ultimately making them less resistant to drops. In this embodiment, although resin 11 is also filled between the carbon fiber filaments, the presence of whiskers 14 allows most of the non-conductive carbon fiber filaments to be indirectly connected. This indirectly allows the excellent mechanical properties of the carbon fiber filaments to be maintained to a certain extent, thereby enhancing the overall toughness of the folding support component and enabling it to achieve a certain yield strength. For example, by flexibly adjusting the mass ratio of whiskers 14, resin 11, and carbon fiber filaments within their respective defined ranges, a folding support component with a yield strength greater than 400 PMa can be obtained, thus improving the drop resistance of the folding support component.

[0046] Optionally, in another embodiment of the invention, the whisker 14 is a metal whisker.

[0047] Specifically, in this embodiment of the invention, metal whiskers and carbon fiber filaments are used in combination. Both are low-resistance materials, which can not only achieve the above-mentioned effects but also significantly improve the heat dissipation and conductivity of the folding support assembly. That is to say, in an optional embodiment of the invention, the folding support assembly is composed of resin 11, metal whiskers, and carbon fiber filaments.

[0048] In an optional embodiment of the present invention, the metal whisker may be a copper whisker, a titanium whisker, or an aluminum whisker.

[0049] Specifically, in this embodiment of the invention, only copper whiskers, titanium whiskers or aluminum whiskers are used as examples for illustration, and no limitation is made in this regard.

[0050] When the metal whiskers are copper whiskers, the mass percentage of copper whiskers in the folded support assembly is 5%-12%.

[0051] When the metal whiskers are titanium whiskers, the mass percentage of titanium whiskers in the folded support assembly is 8%-15%.

[0052] When the metal whiskers are aluminum whiskers, the mass percentage of aluminum whiskers in the folded support assembly is 10%-20%.

[0053] Considering the inherent characteristics of different metal materials, such as their density, the mass ratio of whiskers in different metal materials needs to be limited accordingly to ensure that all performance parameters of the prepared folding support component are within the required range.

[0054] For example, when the metal whiskers are copper whiskers, considering parameters such as the density of copper, the mass percentage of copper whiskers in the folding support assembly is set to 5%-12% to ensure a weighted average density range of 1.7 g / cm³. 3 -2.2g / cm 3 The folded support assembly, and / or, the folded support assembly with a stress of less than 625 MPa before patterning, and / or, the folded support assembly with a yield strength greater than 400 PMa.

[0055] For example, when the metal whiskers are titanium whiskers, considering parameters such as the density of titanium metal, the mass proportion of titanium whiskers in the folded support component is 8%-15% to ensure a weighted average density range of 1.7 g / cm³. 3 -2.2g / cm 3 The folded support assembly, and / or, the folded support assembly with a stress of less than 625 MPa before patterning, and / or, the folded support assembly with a yield strength greater than 400 PMa.

[0056] For example, when the metal whiskers are aluminum whiskers, considering parameters such as the density of aluminum, the mass ratio of aluminum whiskers in the folding support assembly is 10%-20% to ensure a weighted average density range of 1.7 g / cm³. 3 -2.2g / cm 3 The folded support assembly, and / or, the folded support assembly with a stress of less than 625 MPa before patterning, and / or, the folded support assembly with a yield strength greater than 400 PMa.

[0057] Obviously, in the embodiments of the present invention, the mass ratio of whiskers for different metal materials has been set by taking into account various factors.

[0058] In an optional embodiment of the present invention, the whisker 14 is a silicon carbide whisker or an aluminum oxide whisker.

[0059] Specifically, in the embodiments of the present invention, in addition to the technical solution of using metal whiskers and carbon fiber filaments, silicon carbide whiskers or alumina whiskers can also be used in combination with carbon fiber filaments. That is to say, whiskers of different materials can be used in the embodiments of the present invention, which can enhance the feasibility of the technical solution. For example, it is only necessary to ensure that the elongation at break of the whiskers is in the range of 3%-12%. In other words, any material with an elongation at break in the range of 3%-12% can be used to prepare the whiskers required by the technical solution. That is to say, in an optional embodiment of the present invention, the folding support assembly is composed of resin 11, silicon carbide whiskers or alumina whiskers, and carbon fiber filaments.

[0060] It should be noted that in the embodiments of the present invention, the example of whisker 14 being a silicon carbide whisker or an alumina whisker is used for illustration only, and no limitation is made in this regard.

[0061] When whisker 14 is a silicon carbide whisker, the mass percentage of silicon carbide whiskers in the folded support assembly is 5%-12%.

[0062] When whisker 14 is an alumina whisker, the mass percentage of alumina whiskers in the folded support assembly is 8%-15%.

[0063] Considering the inherent characteristics of different materials, such as their density, the mass ratio of whiskers in different materials needs to be limited accordingly to ensure that all performance parameters of the prepared folding support component are within the required range.

[0064] For example, when whisker 14 is a silicon carbide whisker, considering parameters such as the density of silicon carbide material, the mass percentage of silicon carbide whiskers in the folded support assembly is set to 5%-12% to ensure a weighted average density range of 1.7 g / cm³. 3 -2.2g / cm 3 The folded support assembly, and / or, the folded support assembly with a stress of less than 625 MPa before patterning, and / or, the folded support assembly with a yield strength greater than 400 PMa.

[0065] For example, when whisker 14 is an alumina whisker, considering parameters such as the density of the alumina material, the mass percentage of the alumina whisker in the folded support assembly is set to 8%-15% to ensure a weighted average density range of 1.7 g / cm³. 3 -2.2g / cm 3 The folded support assembly, and / or, the folded support assembly with a stress of less than 625 MPa before patterning, and / or, the folded support assembly with a yield strength greater than 400 PMa.

[0066] Obviously, in the embodiments of the present invention, the mass ratio of whiskers for different materials has been set by taking into account various aspects.

[0067] Optionally, in another embodiment of the invention, reference is made to... Figure 4 , Figure 4 The left-view schematic diagram of another folding support component provided in the embodiment of the present invention shows that the thickness of the folding support component in the first direction X is 120μm-180μm, that is, 120μm≤H1≤180μm.

[0068] Specifically, in this embodiment of the invention, the first carbon fiber filament layer 12 with carbon fiber filaments arranged in the 0° direction needs to ensure the surface impact resistance of the folding support component, and the second carbon fiber filament layer 13 with carbon fiber filaments arranged in the 90° direction needs to ensure the bending recovery capability of the folding support component. Therefore, the thickness H2 of the first carbon fiber filament layer 12 in the first direction X and the thickness H3 of the second carbon fiber filament layer 13 in the first direction X need to be carefully considered.

[0069] In an optional embodiment of the present invention, such as Figure 4 As shown, the thickness H3 of the second carbon fiber filament layer 13 in the first direction X accounts for 2 / 3 of the total thickness, and the thickness 2×H2 of the two first carbon fiber filament layers 12 in the first direction X accounts for 1 / 3 of the total thickness. That is, the thickness H2 of each first carbon fiber filament layer 12 in the first direction X accounts for 1 / 6 of the total thickness, where the total thickness is the thickness H1 of the folding support assembly in the first direction X.

[0070] For example, when the thickness of the folding support assembly in the first direction X is 120μm-180μm, the thickness of the first carbon fiber filament layer 12 in the first direction X can be 20μm-30μm, and the thickness of the second carbon fiber filament layer 13 in the first direction X can be 80μm-120μm.

[0071] It should be noted that when the thickness H1 of the folded support component in the first direction X is less than 120 μm, the thickness of the second carbon fiber filament layer 13 in the first direction X of the completed folded support component will be relatively thin, which is detrimental to the bending recovery capability of the folded support component; when the thickness H1 of the folded support component in the first direction X is greater than 180 μm, the thickness of the completed folded support component in the first direction X will be relatively thick, which does not conform to the current design concept of lightweight and thin design. Therefore, in this embodiment of the invention, the thickness range of the folded support component in the first direction X is set to 120 μm-180 μm.

[0072] Table 1 - Simulation Results

[0073]

[0074] As shown in Table 1, the simulation data shows that, through multi-faceted considerations in the embodiments of the present invention, the stress of the prepared folding support component before patterning is less than 625 MPa, taking into account the mass ratio of whiskers of different materials and the thickness of the folding support component in the first direction X. Obviously, other parameters can be further adjusted accordingly to ensure that all performance parameters of the prepared folding support component are within the required parameter range.

[0075] Optionally, in another embodiment of the invention, such as Figure 2As shown, the first carbon fiber filament layer 12 includes at least two first sub-carbon fiber filament layers, which are arranged in a staggered manner in the first direction X.

[0076] The carbon fiber filaments in at least two first sub-carbon fiber filament layers extend in the same direction and extend longitudinally on the plane where the folded support assembly is located.

[0077] The second carbon fiber filament layer 13 includes at least two second sub-carbon fiber filament layers, which are arranged in a staggered manner in the first direction X.

[0078] The carbon fiber filaments in at least two second sub-carbon fiber filament layers extend in the same direction and extend laterally on the plane where the folded support assembly is located.

[0079] Specifically, in the embodiments of the present invention, such as Figure 2 As shown, the exemplary first carbon fiber filament layer 12 includes two first sub-carbon fiber filament layers, with the carbon fiber filaments in the two first sub-carbon fiber filament layers arranged in a 0° direction. The second carbon fiber filament layer 13 includes five second sub-carbon fiber filament layers, with the carbon fiber filaments in the five second sub-carbon fiber filament layers arranged in a 90° direction. This can also be understood as the carbon fiber filaments in the two first sub-carbon fiber filament layers extending longitudinally on the plane where the folding support assembly is located, and the carbon fiber filaments in the five second sub-carbon fiber filament layers extending laterally on the plane where the folding support assembly is located. The folding axis of the folding support assembly extends longitudinally on the plane where the folding support assembly is located.

[0080] In an optional embodiment of the present invention, such as Figure 2 As shown, the whiskers 14 located between two adjacent first sub-carbon fiber filament layers are truncated pyramidal in shape.

[0081] Specifically, in this embodiment of the invention, since the carbon fiber filaments in the first sub-carbon fiber filament layer are arranged at 0°, in order to prevent the whiskers 14 from piercing the carbon fiber filaments in the first sub-carbon fiber filament layer during the preparation of the folding support assembly, such as during the pressing process, the edges of the whiskers located between two adjacent first sub-carbon fiber filament layers need to be smooth. Obviously, the shape of the whiskers 14 located between two adjacent first sub-carbon fiber filament layers can also be cylindrical, cuboid, cubic, or parallelepiped, etc.

[0082] For example, when the whisker 14 located between two adjacent first sub-carbon fiber filament layers is in the shape of a frustum, the upper edge length of the frustum is less than or equal to 50 μm, the lower edge length is less than or equal to 150 μm, and the height is less than or equal to 300 μm.

[0083] Specifically, by optimizing the specific dimensions of the frustum, it can be ensured that after pressing, the frustum-shaped whiskers 14 do not puncture the carbon fibers in the first sub-carbon fiber filament layer, allowing the whiskers 14 to contact and connect with as many carbon fibers as possible that are separated by the resin 11. This enhances the overall toughness of the folding support assembly and maximizes its heat dissipation capacity and other performance parameters.

[0084] In an optional embodiment of the present invention, such as Figure 2 As shown, the whiskers 14 located between two adjacent second sub-carbon fiber filament layers are in the shape of a four-pointed star.

[0085] Specifically, in this embodiment of the invention, since the carbon fiber filaments in the second sub-carbon fiber filament layer are arranged at 90°, in order to prevent the whiskers 14 from piercing the carbon fiber filaments in the second sub-carbon fiber filament layer during the preparation of the folding support component, such as during the pressing process, the specific surface area of ​​the whiskers 14 located between two adjacent second sub-carbon fiber filament layers can be as large as possible, but the overall area can be as small as possible. Obviously, the shape of the whiskers 14 located between two adjacent second sub-carbon fiber filament layers can also be a filament shape, a bone shape, a butterfly shape, or a hedgehog shape, etc.

[0086] For example, when the whisker 14 located between two adjacent second sub-carbon fiber filament layers is in the shape of a quadrilateral star, the side length of the quadrilateral star shape is less than or equal to 50 μm.

[0087] Specifically, by optimizing the specific dimensions of the four-pointed star shape, it can be ensured that after pressing, the whiskers of the four-pointed star shape do not puncture the carbon fibers in the second carbon fiber filament layer, so that the whiskers 14 can contact and connect with as many carbon fibers as possible that are separated by the resin 11. This enhances the overall toughness of the folding support assembly and maximizes its heat dissipation capacity and other performance parameters.

[0088] Optionally, in another embodiment of the invention, reference is made to... Figure 5 , Figure 5 The left-view schematic diagram of another folding support component provided in the embodiment of the present invention shows that the shape of the whisker 14 located between the adjacent first sub-carbon fiber filament layer and the second sub-carbon fiber filament layer is the same as the shape of the whisker 14 located between the two adjacent first sub-carbon fiber filament layers.

[0089] Specifically, in this embodiment of the invention, the shape of the whiskers 14 located between adjacent first sub-carbon fiber filament layers and second sub-carbon fiber filament layers is the same as the shape of the whiskers 14 located between two adjacent first sub-carbon fiber filament layers. This can prevent the whiskers 14 located between two adjacent second sub-carbon fiber filament layers from piercing the carbon fiber filaments in the first sub-carbon fiber filament layer, thereby minimizing the risk of the whiskers 14 piercing the carbon fiber filaments.

[0090] Optionally, in another embodiment of the invention, reference is made to... Figure 6 , Figure 6 The left-view schematic diagram of another folding support component provided in the embodiment of the present invention shows that the whiskers 14 located in at least two different regions between two adjacent first sub-carbon fiber filament layers have different shapes.

[0091] Specifically, in the embodiments of the present invention, such as Figure 6 As shown, some whiskers 14 located between two adjacent first sub-carbon fiber filament layers are truncated pyramidal in shape, while others are cuboid in shape. This disrupts the regularity of the whisker 14's shape, ensuring that after pressing, the whiskers 14 can contact and connect with as many of the carbon fiber filaments separated by the resin 11 as possible without damaging the carbon fiber filaments in the first sub-carbon fiber filament layer. This enhances the overall toughness of the folding support assembly while maximizing its heat dissipation capacity and other performance parameters.

[0092] It should be noted that, in the embodiments of the present invention, the diameter of the whisker 14 ranges from 7μm to 10μm.

[0093] Optionally, in another embodiment of the invention, reference is made to... Figure 7 , Figure 7 This is a schematic diagram of the left-side principle structure of another folding support component provided in an embodiment of the present invention. The whisker 14 is in the shape of a hollow cylinder, and the height extension direction of the hollow cylinder is parallel to the first direction X.

[0094] Specifically, in the embodiments of the present invention, whether located between two adjacent first sub-carbon fiber filament layers or between two adjacent second sub-carbon fiber filament layers, hollow cylindrical whiskers 14 can be provided. The hollow cylindrical whiskers 14 can also be called single-walled whiskers 14, or obviously multi-walled whiskers 14.

[0095] Since the height extension direction of the hollow cylindrical shape is parallel to the first direction X, the area in contact with the first and second sub-carbon fiber filament layers is obviously a single surface, without any sharp points, and will not puncture the carbon fibers in the first and second sub-carbon fiber filament layers. Furthermore, after pressing, the carbon fibers in the first and second sub-carbon fiber filament layers can contact the sidewall of the whisker 14, or they can be directly connected through the hollow part, achieving more contact. This enhances the overall toughness of the folding support assembly while maximizing its heat dissipation capacity and other performance parameters.

[0096] For example, the hollow cylindrical whisker 14 has a height greater than or equal to 50 μm, a sidewall thickness greater than or equal to 10 μm, and an outer diameter less than or equal to 100 μm.

[0097] Based on the above embodiments of the present invention, reference is made to another embodiment of the present invention. Figure 8 , Figure 8 This is a schematic diagram of the principle structure of a foldable display panel provided in an embodiment of the present invention. The foldable display panel 100 provided in this embodiment of the present invention includes the foldable support component 21 described in the above embodiment.

[0098] like Figure 8 As shown, the foldable display panel may further include: a flexible cover plate 22, an adhesive layer 23, a flexible display assembly 24, a buffer 25, and a flexible back panel assembly 26. It should be noted that... Figure 8 The components of the foldable display panel 100 shown are merely illustrative and do not constitute any limitation on its specific structure.

[0099] The foldable display panel 100 has the foldable support component 21 described in the above embodiments, and obviously has the same technical effect as the foldable support component 21 described in the above embodiments, so it will not be described again here.

[0100] Based on the above embodiments of the present invention, an electronic device is also provided in another embodiment of the present invention, the electronic device including the folding support assembly described in the above embodiments;

[0101] or,

[0102] The electronic device includes the foldable display panel 100 described in the above embodiments.

[0103] Specifically, the electronic device can be a mobile phone, tablet, or other electronic devices.

[0104] The foregoing has provided a detailed description of a folding support component, a folding display panel, and an electronic device provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

[0105] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0106] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that elements inherent to a process, method, article, or apparatus that comprises a list of elements, or elements inherent to such processes, methods, articles, or apparatus, are also included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0107] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A foldable support assembly, characterized by, The folding support assembly includes: resin, a first carbon fiber filament layer, a second carbon fiber filament layer, and whiskers, wherein the resin coats the first carbon fiber filament layer, the second carbon fiber filament layer, and the whiskers; The first carbon fiber filament layer and the second carbon fiber filament layer are arranged in a first direction, overlapping each other. The extension direction of the carbon fiber filaments in the first carbon fiber filament layer intersects with the extension direction of the carbon fiber filaments in the second carbon fiber filament layer. The first direction is perpendicular to the plane where the folding support assembly is located. The whiskers are dispersed between the carbon fibers in the first carbon fiber layer and the second carbon fiber layer; The elongation at break of the whiskers ranges from 3% to 12%. The extension direction of the carbon fiber filaments in the first carbon fiber filament layer is perpendicular to the extension direction of the carbon fiber filaments in the second carbon fiber filament layer. In the folding support assembly, the resin accounts for 20%-30% of the mass, the whiskers account for 5%-20% of the mass, and the carbon fiber filaments account for 50%-70% of the mass in the first carbon fiber filament layer and the second carbon fiber filament layer. The thickness of the folding support assembly in the first direction ranges from 120μm to 180μm, the thickness of the first carbon fiber filament layer in the first direction ranges from 20μm to 30μm, and the thickness of the second carbon fiber filament layer in the first direction ranges from 80μm to 120μm.

2. The fold support assembly of claim 1, wherein, The weighted average density of the folded support assembly ranges from 1.7 g / cm 3 - 2.2 g / cm 3 .

3. The folding support assembly according to claim 1, characterized in that, The whiskers are metallic whiskers.

4. The folding support assembly according to claim 3, characterized in that, The metal whiskers are copper whiskers, titanium whiskers, or aluminum whiskers.

5. The folding support assembly according to claim 4, characterized in that, When the metal whiskers are copper whiskers, the mass percentage of the copper whiskers in the folded support assembly is 5%-12%. When the metal whiskers are titanium whiskers, the mass percentage of the titanium whiskers in the folded support assembly is 8%-15%. When the metal whiskers are aluminum whiskers, the mass percentage of the aluminum whiskers in the folded support assembly is 10%-20%.

6. The folding support assembly according to claim 1, characterized in that, The whiskers are silicon carbide whiskers or aluminum oxide whiskers.

7. The folding support assembly according to claim 6, characterized in that, When the whiskers are silicon carbide whiskers, the mass percentage of the silicon carbide whiskers in the folded support assembly is 5%-12%. When the whiskers are alumina whiskers, the mass percentage of the alumina whiskers in the folded support assembly is 8%-15%.

8. The folding support assembly according to any one of claims 1-7, characterized in that, The first carbon fiber filament layer includes at least two first sub-carbon fiber filament layers, which are arranged in an overlapping manner in the first direction; The carbon fiber filaments in the at least two first sub-carbon fiber filament layers extend in the same direction and extend longitudinally on the plane where the folded support assembly is located. The second carbon fiber filament layer includes at least two second sub-carbon fiber filament layers, which are arranged in an overlapping manner in the first direction; The carbon fiber filaments in the at least two second sub-carbon fiber filament layers extend in the same direction and extend laterally on the plane where the folded support assembly is located.

9. The folding support assembly according to claim 8, characterized in that, The whisker is in the shape of a hollow cylinder, and the height extension direction of the hollow cylinder is parallel to the first direction.

10. The folding support assembly according to claim 9, characterized in that, The hollow cylindrical whiskers have a height greater than or equal to 50 μm, a sidewall thickness greater than or equal to 10 μm, and an outer diameter less than or equal to 100 μm.

11. The folding support assembly according to claim 8, characterized in that, The whiskers located between the first sub-carbon fiber filament layers of two adjacent layers are in the shape of a frustum, a cylinder, or a parallelepiped.

12. The folding support assembly according to claim 11, characterized in that, When the whisker located between two adjacent layers of the first sub-carbon fiber filaments is in the shape of a frustum, the upper edge length of the frustum is less than or equal to 50 μm, the lower edge length is less than or equal to 150 μm, and the height is less than or equal to 300 μm.

13. The folding support assembly according to claim 8, characterized in that, The whiskers located between the second sub-carbon fiber filament layers of two adjacent layers can be in the shape of a four-pointed star, a filament, a bone, a butterfly, or a hedgehog.

14. The folding support assembly according to claim 13, characterized in that, When the whisker located between two adjacent layers of the second sub-carbon fiber filaments is in the shape of a four-pointed star, the side length of the four-pointed star shape is less than or equal to 50 μm.

15. The folding support assembly according to claim 8, characterized in that, The whisker located between adjacent first sub-carbon fiber filament layers and second sub-carbon fiber filament layers has the same shape as the whisker located between two adjacent first sub-carbon fiber filament layers.

16. The folding support assembly according to any one of claims 11-15, characterized in that, The whiskers located between two adjacent layers of the first sub-carbon fiber filaments have whiskers with different shapes in at least two different regions.

17. A foldable display panel, characterized in that, The foldable display panel includes the foldable support assembly as described in any one of claims 1-16.

18. An electronic device, characterized in that, The electronic device includes the folding support assembly as described in any one of claims 1-16; or, The electronic device includes the foldable display panel as described in claim 17.

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