CN116994495A - Support backboard, display module and display device - Google Patents

Abstract

The application relates to a support backboard, a display module and a display device. The support backplate has first region, second region and third region that set gradually along first direction, the support backplate includes: a first fiber layer comprising a plurality of first fibers extending in a second direction; a second fiber layer disposed on one side of the first fiber layer, the second fiber layer including a plurality of second fibers extending in the first direction; the third fiber layer is arranged on one side, away from the first fiber layer, of the second fiber layer, and comprises a plurality of third fibers extending along the second direction; and a plurality of first grooves arranged in the first area and/or the third area, wherein the first grooves extend on the first fiber layer along the first direction, the depth of the first grooves is more than or equal to one third of the thickness of the support backboard, and the second direction is perpendicular to the first direction.

Description

Support backboard, display module and display device

Technical Field

The application relates to the technical field of display, in particular to a support backboard, a display module and a display device.

Background

With the development of technology, foldable display products become a focus of attention, and particularly flexible foldable products have become popular trends in the development of electronic products.

However, with current flexible folding OLED modules, the support employed in the module is gradually improved in folding performance. However, the bending performance and reliability of the module still cannot meet the requirements of the module when the module is flexibly folded in the form of water drops.

Disclosure of Invention

Based on the above, the application provides the support backboard, the display module and the display device, which are beneficial to improving the bending performance and the reliability of the support backboard, so that the support backboard can meet the performance requirement of the display device during flexible folding in the form of water drops, and further the bending performance and the reliability of the display module and the display device can be improved.

An embodiment of the present application provides a support back plate having a first region, a second region, and a third region sequentially arranged along a first direction, the support back plate including:

a first fiber layer comprising a plurality of first fibers extending in a second direction;

a second fiber layer disposed on one side of the first fiber layer, the second fiber layer including a plurality of second fibers extending in the first direction;

The third fiber layer is arranged on one side, away from the first fiber layer, of the second fiber layer, and comprises a plurality of third fibers extending along the second direction; and

the first grooves are arranged in the first area and/or the third area, extend on the first fiber layer along the first direction, have a depth of more than or equal to one third of the thickness of the support backboard, and are perpendicular to the first direction.

In addition, based on the same conception, the embodiment of the application also provides a display module comprising the support backboard.

In a third aspect, an embodiment of the present application further provides a display apparatus including the display module.

In the present application, the support back plate has a first region, a second region, and a third region that are sequentially arranged in a first direction. The first and third regions may be folded through the second region. Further, the support back sheet includes a first fibrous layer, a second fibrous layer, and a third fibrous layer. The extending directions of the first fibers and the third fibers are parallel to the bending axis, so that less bending stress is generated when the support backboard is bent. The extending direction of the second fiber is perpendicular to the bending axis, so that the bending recovery capability of the support backboard is improved. Further, a first groove is further formed in the support back plate, the first groove extends in a first direction on the first fiber layer, and the extending direction of the first groove is parallel to the extending direction of the second fiber. In this way, the number of the second fibers cut by the first grooves can be reduced, thereby being beneficial to further improving the bending recovery capability of the support backboard. Further, the first groove is located in at least one of the first region and the third region, and the depth of the first groove is equal to or greater than one third of the thickness of the support back plate, so that the bending stress and the elastic modulus of at least one of the first region and the third region can be further reduced. Therefore, compared with the supporting backboard in the related art, the supporting backboard has stronger bending recovery capability, lower bending stress and lower elastic modulus in the first area and the third area, thereby being beneficial to improving the bending performance of the supporting backboard and further realizing the bending of the water drop shape of the supporting backboard. In the second aspect, the number of the second fibers cut by the first grooves is reduced, so that the probability of internal stress generation of the support back plate caused by the arrangement of the first grooves is reduced, the probability of half-engraving deformation, warping and other conditions during processing of the support back plate can be reduced, and further the reliability of the support back plate is improved.

Drawings

FIG. 1 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 2 is a schematic top view of the first fibrous layer of the support back plate of FIG. 1;

FIG. 3 is a schematic top view of a third fiber layer of the support back shown in FIG. 1;

FIG. 4 is a schematic top view of a second fiber layer of the support back shown in FIG. 1;

FIG. 5 is a schematic cross-sectional view of A-A of the support backplate of FIG. 1;

FIG. 6 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 7 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 8 is a schematic top view of a second fiber layer of the support back shown in FIG. 7;

FIG. 9 is a schematic top view of the first fibrous layer of the support back plate of FIG. 7;

FIG. 10 is a schematic top view of the third fibrous layer of the support back shown in FIG. 7;

FIG. 11 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 12 is a schematic top view of a second fiber layer of the support back shown in FIG. 11;

FIG. 13 is a schematic top view of the first fiber layer of the support back shown in FIG. 11;

FIG. 14 is a schematic top view of the third fibrous layer of the support back plate of FIG. 11;

FIG. 15 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 16 is a schematic top view of the second fiber layer of the support back shown in FIG. 15;

FIG. 17 is a schematic top view of the first fibrous layer of the support back plate of FIG. 15;

FIG. 18 is a schematic top view of the third fibrous layer of the support back plate of FIG. 15;

FIG. 19 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 20 is a schematic top view of the first fiber layer of the support back shown in FIG. 19;

FIG. 21 is a schematic top view of the third fibrous layer of the support back plate of FIG. 19;

FIG. 22 is a schematic top view of a second fiber layer of the support back shown in FIG. 19;

FIG. 23 is a schematic top view of a support back plate according to an embodiment of the present application;

FIG. 24 is a schematic top view of the first fibrous layer of the support back plate of FIG. 23;

FIG. 25 is a schematic top view of the third fibrous layer of the support back plate of FIG. 23;

FIG. 26 is a schematic top view of a second fiber layer of the support back shown in FIG. 23;

FIG. 27 is a schematic top view of a first fiber layer according to an embodiment of the present application;

Fig. 28 is a schematic top view of a third fiber layer according to an embodiment of the present application.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

With the development of technology, foldable display products become a focus of attention, and particularly flexible foldable products have become popular trends in the development of electronic products. However, with current flexible folding OLED modules, the support employed in the module is gradually improved in folding performance. However, the bending performance and reliability of the module still cannot meet the requirements of the module when the module is flexibly folded in the form of water drops.

Based on the above-mentioned problems, the applicant has found that the fiber is a better support material because, in the first aspect, the fiber material is light and the overall weight of the support back plate can be reduced, thereby reducing the overall weight. In the second aspect, the fibrous layer contains fibrous materials, and has good bending performance. In the third aspect, the fibers are anisotropic materials and have different mechanical properties in different directions. The data indicate that the tensile strength of the fibrous material in the 0 ° direction (parallel to the direction of fiber extension S) is much greater than the tensile strength in the 90 ° direction (perpendicular to the direction of fiber extension S). Therefore, the flexible folding display module has better supporting performance and reliability by reasonably arranging the fiber arrangement and lamination modes, so that the flexible folding display module can be applied to the flexible folding display module. Therefore, the applicant further researches the technical scheme of the embodiment of the application. Specifically, the present application proposes a support back plate having a first region, a second region, and a third region disposed in order along a first direction. The support back includes a first fibrous layer, a second fibrous layer, a third fibrous layer, and a plurality of first grooves disposed within at least one of the first region and/or the third region. The first fiber layer includes a plurality of first fibers extending in a second direction. The second fiber layer is arranged on one side of the first fiber layer, and comprises a plurality of second fibers extending along the first direction. The third fiber layer is arranged on one side, away from the first fiber layer, of the second fiber layer, and the third fiber layer comprises a plurality of third fibers extending along the second direction. The first grooves extend in the first direction on the first fiber layer, the depth of the first grooves is greater than or equal to one third of the thickness of the support backboard, and the second direction is perpendicular to the first direction. In the above scheme, the support backboard is provided with a first area, a second area and a third area which are sequentially arranged along the first direction. The first and third regions may be folded through the second region. In a first aspect, a support back includes a first fibrous layer, a second fibrous layer, and a third fibrous layer. The extending directions of the first fibers and the third fibers are parallel to the bending axis, so that less bending stress is generated when the support backboard is bent. The extending direction of the second fiber is perpendicular to the bending axis, so that the bending recovery capability of the support backboard is improved. The first grooves extend in a first direction on the first fiber layer in a direction parallel to the direction of extension of the second fibers. In this way, the number of the second fibers cut by the first grooves can be reduced, thereby being beneficial to further improving the bending recovery capability of the support backboard. Further, the first groove is located in at least one of the first area and the third area, and the depth of the first groove is greater than or equal to one third of the thickness of the support backboard, so that the bending stress and the elastic modulus of at least one of the first area and the third area can be reduced, and the support backboard is easier to bend. Thus, the bending performance of the support backboard is improved, and further the support backboard is bent in a water drop shape. In the second aspect, the number of the second fibers cut by the first grooves is reduced, so that the probability of internal stress in the support backboard caused by the arrangement of the first grooves is reduced, the probability of half-engraving deformation, warping and other conditions during processing of the support backboard can be reduced, and the reliability of the support backboard is improved.

The foregoing is the core idea of the present application, and the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without making any inventive effort are intended to fall within the scope of the present application.

Embodiments of the first aspect of the present application provide a support back 10. As shown in fig. 1 to 5, the support back 10 has a first region 10a, a second region 10b, and a third region 10c disposed in this order along a first direction X. As shown in fig. 1 and 2, the support back 10 includes a first fibrous layer 11, a second fibrous layer 12, a third fibrous layer 13, and a plurality of first grooves 14 disposed in at least one of the first region 10a and the third region 10c. The first fiber layer 11 includes a plurality of first fibers 111 extending in the second direction Y. The second fiber layer 12 is disposed at one side of the first fiber layer 11, and the second fiber layer 12 includes a plurality of second fibers 121 extending in the first direction X. The third fiber layer 13 is arranged on a side of the second fiber layer 12 facing away from the first fiber layer 11, the third fiber layer 13 comprising a plurality of third fibers 131 extending in the second direction Y. The first grooves 14 extend in the first direction X on the first fiber layer 11, the depth H of the first grooves 14 is equal to or greater than one third of the thickness of the support back 10, and the second direction Y is perpendicular to the first direction X. Wherein the thickness direction of the support back 10 is set to the third direction Z.

As shown in fig. 1, the support back 10 of the present application has a first region 10a, a second region 10b, and a third region 10c disposed in this order along a first direction X. The first region 10a and the third region 10c may be flexibly folded by the second region 10 b. That is, the second region 10b is a bending region supporting the back plate 10. When the display panel is bent, the second area 10b can be synchronously bent along with the display panel, so that the support of the bending area of the display panel is realized. The second region 10b the first region 10a may support the unbent region of the display panel.

The support back 10 comprises a first fibrous layer 11, a second fibrous layer 12, a third fibrous layer 13. As shown in fig. 5, the fiber layer is a film structure formed by doping a resin base material 115 with a fiber material, and the resin base material 115 is filled in the gaps of the fiber filaments. Specifically, the first fiber layer 11 includes first fibers 111 extending in the second direction Y. That is, the extending direction of the first fibers 111 is parallel to the bending axis L of the support back 10, so that the bending stress of the first fiber layer 11 can be reduced. The second fiber layer 12 includes a plurality of second fibers 121 extending in the first direction X. In this way, the second fiber 121 extends in a direction perpendicular to the bending axis L of the support back plate 10, and the second fiber layer 12 can provide bending recovery capability of the support back plate 10 after the support back plate 10 is bent. The third fiber layer 13 includes a plurality of third fibers 131 extending in the second direction Y. The extending direction of the third fibers 131 is the same as the extending direction of the first fibers 111, so that the bending stress of the third fiber layer 11 can be reduced. Therefore, through the lamination mode, the bending stress can be reduced and the bending recovery capability can be improved while the supporting performance is ensured.

The support back 10 further includes a first recess 14. The first recess 14 is a non-through recess. The first grooves 14 extending in the first direction X on the first fibrous layer 11 means that the first grooves 14 open on the first fibrous layer 11 with a depth extending towards the third fibrous layer 13. Also, the length direction of the first groove 14 is parallel to the first direction X.

In the present application, the extending directions of the first fibers 111 and the third fibers 131 are parallel to the bending axis L of the support back 10, so that a smaller bending stress is generated when the support back 10 is bent. The extending direction of the second fibers 121 is perpendicular to the bending axis L of the support back plate 10, so that the bending recovery capability of the support back plate 10 is improved. The first grooves 14 extend in a first direction X on the first fiber layer 11, the extending direction X of which is parallel to the extending direction of the second fibers 121. In this way, the number of the second fibers 121 in the second fiber layer 12, which are entirely cut by the first grooves 14, can be reduced, thereby facilitating further improvement of the bending recovery ability of the support back 10. Further, the first grooves 14 are located in at least one of the first region 10a and the third region 10c, and the depth of the first grooves 14 is equal to or greater than one third of the thickness of the support back 10, so that the bending stress and elastic modulus of at least one of the first region 10a and the third region 10c can also be reduced. When the support back 10 is applied to the display panel body of the related art in which the shape of the water drop is bent, the first region 10a and the third region 10c need to be partially bent in addition to the second region 10 b. Thus, the support back plate 10 of the present application has a lower bending stress and elastic modulus of at least one of the first region 10a and the third region 10c, making it easier to bend. In this way, the bending performance of the support back plate 10 is improved, and further the bending of the support back plate 10 in the form of water drops is realized. In the second aspect, the reduced number of the second fibers 121 cut by the first grooves 14 is advantageous in reducing the probability of internal stress generated in the support back 10 due to the provision of the first grooves 14, so that the probability of half-cut deformation, warpage, etc. occurring in processing the support back 10 can be reduced, and further the reliability of the support back 10 can be advantageously improved.

In some embodiments, the thickness of the second fibrous layer 12 is equal to or greater than two-thirds of the thickness of the support backsheet 10. Since the second fibrous layer 12 is associated with the bending recovery capability of the support back 10. Setting the thickness of the second fiber layer 12 to be equal to or greater than two-thirds of the thickness of the support back plate 10 is beneficial to improving the bending recovery capability of the support back plate 10 and further beneficial to improving the bending performance of the support back plate 10.

In some embodiments, the thickness D1 of the first fibrous layer 11 satisfies: d1 is less than or equal to 15 mu m and less than or equal to 40 mu m. When the thickness D1 of the first fiber layer 11 is within the above range, it is advantageous to reduce the bending stress of the support back plate 10, and further to improve the bending performance of the support back plate 10. In the present embodiment, the thickness D1 of the first fiber layer 11 is related to the diameter of the first fibers 111 and the number of stacked layers of the first fibers 111. The number of stacked layers of the first fibers 111 means that the first fibers 111 may be stacked in multiple layers in the thickness direction of the support back 10, i.e., in the third direction Z, according to the diameter size of the first fibers 111. In other words, the first fiber layer 11 may have a plurality of sub-fiber layers, and the first fibers 111 in each sub-fiber layer extend in the second direction Y and are spaced apart in the first direction X. As shown in fig. 5, the number of sub-fiber layers of the first fiber layer 11 is 2, but it is needless to say that it may be 3, 5, 6, etc., and the present application is not limited thereto, and the first fibers 111 may be arranged and stacked reasonably so that the thickness thereof satisfies the above-mentioned range.

In some embodiments, the thickness D2 of the second fibrous layer 12 satisfies: d2 is more than or equal to 60 mu m and less than or equal to 140 mu m. When the thickness D2 of the second fiber layer 12 is within the above range, it is advantageous to improve the bending recovery capability of the support back plate 10, and further to improve the bending performance of the support back plate 10. In the present embodiment, the thickness D2 of the second fiber layer 12 is related to the diameter of the second fibers 121 and the number of stacked layers of the second fibers 121. The number of stacked layers of the second fibers 121 means that the second fibers 121 may be stacked in multiple layers in the third direction Z according to the diameter size of the second fibers 121. In other words, the second fiber layer 12 may have a plurality of sub-fiber layers, and the second fibers 121 in each sub-fiber layer extend in the first direction X and are spaced apart in the second direction Y. As shown in fig. 5, the number of sub-fiber layers of the second fiber layer 12 is 8, but it is needless to say that the number of sub-fiber layers may be 5, 6, 9, etc., and the present application is not limited thereto, as long as the second fibers 121 are properly arranged and stacked so that the thickness thereof satisfies the above range.

In some embodiments, the thickness D3 of the third fibrous layer 13 satisfies: d1 is less than or equal to 15 mu m and less than or equal to 40 mu m. When the thickness D3 of the third fiber layer 13 is within the above range, it is advantageous to reduce the bending stress of the support back plate 10, and further, to improve the bending performance of the support back plate 10. In the present embodiment, the thickness D3 of the third fiber layer 13 is related to the diameter of the third fibers 131 and the number of stacked layers of the third fibers 131. The number of stacked layers of the third fibers 131 means that the third fibers 131 may be stacked in multiple layers in the third direction Z according to the diameter size of the third fibers 131. In other words, the third fiber layer 13 may have a plurality of sub-fiber layers, and the third fibers 131 in each sub-fiber layer extend in the first direction X and are spaced apart in the second direction Y. As shown in fig. 5, the number of sub-fiber layers of the first fiber layer 11 is 2, but it is needless to say that it may be 3, 4, 5, etc., and the present application is not limited thereto, and the third fibers 131 may be arranged and stacked reasonably so that the thickness thereof satisfies the above-mentioned range.

In some embodiments, as shown in fig. 6, the plurality of first grooves 14 includes at least one of rectangular grooves 14a, elliptical grooves 14b, hourglass grooves 14c, dog bone grooves 14d, waist-shaped grooves 14 e. The present embodiment proposes various shapes of the first recess 14. The first groove 14 is mainly used for reducing the bending stress and the elastic modulus of the first region 10a or the third region 10c, and the shape of the first groove 14 is relatively common, so that the diversity and the manufacturing convenience of the first groove 14 are improved. In addition, the first groove 14 may have other shapes as long as the length direction thereof extends in the first direction X.

In some embodiments, as shown in fig. 1, the plurality of first grooves 14 are the same shape. Thus, the convenience in manufacturing the first grooves 14 is further improved, and the cost is reduced.

In some embodiments, as shown in fig. 1, the plurality of first grooves 14 are disposed in the first region 10a and the third region 10c, and the plurality of first grooves 14 located in the first region 10a and the plurality of first grooves 14 located in the third region 10c are symmetrically disposed along an extension line of the second direction Y. Thus, in the first aspect, the convenience in manufacturing the first grooves 14 is improved, and the cost is reduced. In the second aspect, the bending stress of the first region 10a and the third region 10c is reduced, so that the bending performance of the support back 10 is better. In the third aspect, the plurality of first grooves 14 located in the first area 10a and the plurality of first grooves 14 located in the third area 10c are symmetrically arranged along the extension line of the second direction Y, which is further beneficial to making the bending stress of the first area 10a and the bending stress of the third area 10c tend to be consistent, and further beneficial to improving the convenience of bending.

In some embodiments, as shown in fig. 7, within the first region 10a, a plurality of first grooves 14 are arranged at a single column interval along the second direction Y. In this way, the bending stress of the first region 10a is reduced, and the bending performance of the support back plate 10 is improved.

Alternatively, in some embodiments, as shown in fig. 8, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and the orthographic projection of the first grooves 14 on the second fiber layer 12 is located in the second regions 12 b. In the present embodiment, in the first area 10a, the plurality of first grooves 14 are arranged at intervals in a single row along the second direction Y. And, the orthographic projection of the first grooves 14 on the second fiber layer 12 is located in the second zone 12 b. And the second fibers 121 of the second region 12b are arranged at a density less than the second fibers 121 of the first region 12 a. In this way, the number of the second fibers 121 in the second fiber layer 12, which are entirely cut by the first grooves 14, is advantageously further reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the arrangement of the first grooves 14 is reduced, and further, the bending performance and reliability of the support back plate 10 are advantageously improved. The arrangement density of the second fibers 121 refers to the tightness between two adjacent second fibers 121. When the arrangement between the adjacent second fibers 121 is dense, this indicates that the fiber density of this region is large; when sparsely arranged, this region is shown to have a small fiber density. That is, the dividing boundaries of the first and second regions 12a and 12b are divided according to the degree of the density of the arrangement of the second fibers 121. In the first region 12a, the second fibers 121 are densely arranged; in the second region 12b, the second fibers 121 are arranged sparsely, even without the second fibers 121 being present.

Alternatively, as shown in fig. 9, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and the orthographic projection of the first grooves 14 on the first fiber layer 11 is located in the fourth region 11 b. In this way, it is advantageous to reduce the number of the first fibers 111 cut by the first grooves 14 in the first fiber layer 11, thereby advantageously improving the support strength of the support back 10, and thus advantageously improving the support reliability of the support back 10.

In some embodiments, as shown in fig. 11, in the third region 10c, the plurality of first grooves 14 are arranged at a single column interval along the second direction Y. In this way, the bending stress of the third region 10c is advantageously reduced, and the bending performance of the support back 10 is further advantageously improved.

Alternatively, in some embodiments, as shown in fig. 12, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and the orthographic projection of the first grooves 14 on the second fiber layer 12 is located in the second regions 12 b. In the present embodiment, in the third region 10c, the plurality of first grooves 14 are arranged at intervals in a single row along the second direction Y. And, the orthographic projection of the first grooves 14 on the second fiber layer 12 is located in the second zone 12 b. And the second fibers 121 of the second region 12b are arranged at a density less than the second fibers 121 of the first region 12 a. In this way, the number of the second fibers 121 in the second fiber layer 12, which are entirely cut by the first grooves 14, is advantageously further reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the arrangement of the first grooves 14 is reduced, and the bending performance and reliability of the support back plate 10 are advantageously improved.

Alternatively, in some embodiments, as shown in fig. 13, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and the orthographic projection of the first grooves 14 on the first fiber layer 11 is located in the fourth region 11 b. In this way, it is advantageous to reduce the number of the first fibers 111 cut by the first grooves 14 in the first fiber layer 11, thereby advantageously improving the support strength of the support back 10, and thus advantageously improving the support reliability of the support back 10.

In some embodiments, as shown in fig. 15, a plurality of first grooves 14 are arranged in a single column at intervals along the second direction Y in the first region 10a and the third region 10 c. In this way, the bending stress of the first region 10a and the third region 10c is advantageously reduced, and thus the bending performance of the support back 10 is advantageously improved.

Alternatively, in some embodiments, as shown in fig. 16, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and the orthographic projection of the first grooves 14 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 in the second fiber layer 12, which are entirely cut by the first grooves 14, is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the arrangement of the first grooves 14 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

Alternatively, in some embodiments, as shown in fig. 17, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and the orthographic projection of the first grooves 14 on the first fiber layer 11 is located in the fourth region 11 b. In this way, it is advantageous to reduce the number of the first fibers 111 cut by the first grooves 14 in the first fiber layer 11, thereby advantageously improving the support strength of the support back 10, and thus advantageously improving the support reliability of the support back 10.

In some embodiments, as shown in fig. 1, the support backplate 10 further includes a plurality of through slots 15 disposed within the second region 10b, the through slots 15 extending in the second direction Y. In this embodiment, the support backplate 10 further includes a through slot 15. The through groove 15 is disposed in the second region 10b, so as to facilitate reducing bending stress of the second region 10b, and further facilitate improving bending performance of the support back plate 10. In addition, the through groove 15 extends along the second direction Y, and its length direction is parallel to the bending axis L, so as to further reduce the bending stress of the second region 10 b.

In some embodiments, as shown in fig. 1, the through slots 15 are spaced apart along the first direction X. In this way, the difficulty in manufacturing the through groove 15 is reduced, and the cost of supporting the back plate 10 is reduced.

Alternatively, as shown in fig. 2, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10. It should be noted that at least a part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11b means that the orthographic projection of the through groove 15 on the first fiber layer 11 is located entirely in the fourth region 11b, or that a part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b.

Alternatively, as shown in fig. 3, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10. It should be noted that at least a part of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13b means that the orthographic projection of the through groove 15 on the third fiber layer 13 is located entirely in the sixth region 13b or that a part of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b.

Alternatively, as shown in fig. 4, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes a first region 12a and a second region 12b arranged along the second direction Y, the second fibers 121 of the first region 12a are arranged at a density greater than the second fibers 121 of the second region 12b, and at least a portion of the orthographic projection of the through groove 15 on the second fiber layer 12 is located in the second region 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved. It should be noted that at least part of the orthographic projection of the through groove 15 on the second fiber layer 12 is located in the second region 12b means that the orthographic projection of the through groove 15 on the second fiber layer 12 is located entirely in the second region 12b, or that part of the orthographic projection of the through groove 15 on the second fiber layer 12 is located in the second region 12 b.

In some embodiments, as shown in fig. 11, the through slots 15 are spaced apart along the second direction Y. In this way, the difficulty in manufacturing the through groove 15 is reduced, and the cost of supporting the back plate 10 is reduced.

Alternatively, as shown in fig. 13, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 14, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 12, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and at least part of the orthographic projection of the through grooves 15 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

In some embodiments, as shown in fig. 7, the through slots 15 are spaced apart along the first direction X; in the second direction Y, the through grooves 15 are arranged at intervals. That is, the through grooves 15 are arranged in an array in the second region 10 b. In this way, the difficulty in manufacturing the through groove 15 is reduced, and the cost of supporting the back plate 10 is reduced.

Alternatively, as shown in fig. 9, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 10, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 8, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and at least part of the orthographic projection of the through grooves 15 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

In some embodiments, as shown in fig. 15, the through grooves 15 are arranged at intervals along the first direction X, and two adjacent through grooves 15 are arranged in a staggered manner. In this way, the fibers in the second region 10b are prevented from being broken at the same position, which is advantageous for further improving the support performance of the support back 10.

Alternatively, as shown in fig. 17, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 18, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 16, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and at least part of the orthographic projection of the through grooves 15 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

In some embodiments, as shown in fig. 19, the through grooves 15 are arranged at intervals in the second direction Y, and two adjacent through grooves 15 are arranged in a staggered manner. In this way, the fibers in the second region 10b are prevented from being broken at the same position, which is advantageous for further improving the support performance of the support back 10.

Alternatively, as shown in fig. 20, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 21, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 22, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and at least part of the orthographic projection of the through grooves 15 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

In some embodiments, as shown in fig. 23, the through grooves 15 are arranged at intervals along the first direction X, and two adjacent through grooves 15 are arranged in a staggered manner; along the second direction Y, the through grooves 15 are arranged at intervals, and two adjacent through grooves 15 are arranged in a staggered manner. In this way, the fibers in the second region 10b are prevented from being broken at the same position, which is advantageous for further improving the support performance of the support back 10.

Alternatively, as shown in fig. 24, in some embodiments, in the first fiber layer 11, the first fibers 111 are arranged at intervals along the first direction X, the first fiber layer 11 includes a third region 11a and a fourth region 11b arranged along the first direction X, the arrangement density of the first fibers 111 of the third region 11a is greater than the arrangement density of the first fibers 111 of the fourth region 11b, and at least part of the orthographic projection of the through groove 15 on the first fiber layer 11 is located in the fourth region 11 b. In this way, the number of the first fibers 111 intersecting the through grooves 15 in the first fiber layer 11 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 25, in some embodiments, in the third fiber layer 13, the third fibers 131 are arranged at intervals along the first direction X, the third fiber layer 13 includes a fifth region 13a and a sixth region 13b arranged along the first direction X, the third fibers 131 of the fifth region 13a are arranged at a density greater than the third fibers 131 of the sixth region 13b, and at least a portion of the orthographic projection of the through groove 15 on the third fiber layer 13 is located in the sixth region 13 b. In this way, the number of the third fibers 131 intersecting the through grooves 15 in the third fiber layer 13 is advantageously reduced, thereby advantageously increasing the support strength of the support back 10, and thus advantageously increasing the support reliability of the support back 10.

Alternatively, as shown in fig. 26, in some embodiments, in the second fiber layer 12, the second fibers 121 are arranged at intervals along the second direction Y, the second fiber layer 12 includes first regions 12a and second regions 12b arranged along the second direction Y, the arrangement density of the second fibers 121 of the first regions 12a is greater than the arrangement density of the second fibers 121 of the second regions 12b, and at least part of the orthographic projection of the through grooves 15 on the second fiber layer 12 is located in the second regions 12 b. In this way, the number of the second fibers 121 cut through the through grooves 15 in the second fiber layer 12 is advantageously reduced, so that the bending recovery capability of the support back plate 10 is further improved, the probability of internal stress in the support back plate 10 due to the through grooves 15 is reduced, and the bending performance and reliability of the support back plate 10 are further improved.

In some embodiments, as shown in fig. 27, in the first fiber layer 11, the arrangement density of the first fibers 111 located in the second region 10b is smaller than the arrangement density of the first fibers 111 located in at least one of the first region 10a and the third region 10 c. In this way, it is advantageous to reduce the number of the first fibers 111 cut by the through grooves 15 in the second region 10b, thereby advantageously improving the supporting strength of the supporting back plate 10. In addition, the higher density of the first fibers 111 of at least one of the first region 10a and the third region 10c is also advantageous for further improving the support strength of the support back 10.

In some embodiments, as shown in fig. 28, in the third fiber layer 13, the arrangement density of the third fibers 131 located in the second region 10b is smaller than the arrangement density of the third fibers 131 located in at least one of the first region 10a and the third region 10 c. In this way, it is advantageous to reduce the number of the third fibers 131 cut by the through grooves 15 in the second region 10b, thereby advantageously improving the supporting strength of the supporting back plate 10. In addition, the higher density of the third fibers 131 of at least one of the first region 10a and the third region 10c is also advantageous for further improving the support strength of the support back plate 10.

An embodiment of the second aspect of the present application provides a display module, including a display panel and the support back plate 10 of the first aspect, where the support back plate 10 is disposed on a backlight side of the display panel. The present application supports a display panel using the support back plate 10 of the first aspect. In the first aspect, at least one of the first region 10a and the third region 10c has a lower bending stress and a lower elastic modulus, making it easier to bend. In this way, the bending performance of the support back plate 10 is improved, and further the bending of the support back plate 10 in the form of water drops is realized. In the second aspect, since the number of the second fibers 121 cut by the first grooves 14 is reduced, it is also advantageous to reduce the probability of internal stress occurring in the support back 10 due to the provision of the first grooves 14, so that it is possible to reduce the probability of half-cut deformation, warpage, or the like occurring when the support back 10 is processed, and it is also advantageous to improve the reliability of the support back 10.

An embodiment of a third aspect of the present application provides a display device, including the display module set of the second aspect. The display device of the present application uses the support back plate 10 of the first aspect, thereby facilitating the folding of the water droplet shape, and further facilitating the improvement of portability of the display device. The display device can be an electronic product such as a mobile phone, a computer display, a tablet and the like, and the application is not limited to this, so long as the display device is an electronic product with a display function.

In summary, in the support backboard, the display module and the display device provided by the embodiment of the application, the extending directions of the first fiber and the third fiber are parallel to the bending axis, so that smaller bending stress is generated when the support backboard is bent. The extending direction of the second fiber is perpendicular to the bending axis, so that the bending recovery capability of the support backboard is improved. The first grooves extend in a first direction on the first fiber layer in a direction parallel to the direction of extension of the second fibers. In this way, the number of the second fibers cut by the first grooves can be reduced, thereby being beneficial to further improving the bending recovery capability of the support backboard. Further, the first groove is located in at least one of the first area and the third area, and the depth of the first groove is greater than or equal to one third of the thickness of the support backboard, so that the bending stress and the elastic modulus of at least one of the first area and the third area can be reduced, and the support backboard is easier to bend. Thus, the bending performance of the support backboard is improved, and further the support backboard is bent in a water drop shape. In the second aspect, the number of the second fibers cut by the first grooves is reduced, so that the probability of internal stress in the support backboard caused by the arrangement of the first grooves is reduced, the probability of half-engraving deformation, warping and other conditions during processing of the support backboard can be reduced, and the reliability of the support backboard is improved.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (16)

1. A support back plate having a first region, a second region, and a third region disposed sequentially along a first direction, the support back plate comprising:

a first fiber layer comprising a plurality of first fibers extending in a second direction;

a second fiber layer disposed on one side of the first fiber layer, the second fiber layer including a plurality of second fibers extending in the first direction;

The third fiber layer is arranged on one side, away from the first fiber layer, of the second fiber layer, and comprises a plurality of third fibers extending along the second direction; and

the first grooves are arranged in the first area and/or the third area, extend on the first fiber layer along the first direction, have a depth of more than or equal to one third of the thickness of the support backboard, and are perpendicular to the first direction.

2. The support back of claim 1 wherein the thickness of the second fibrous layer is equal to or greater than two-thirds the thickness of the support back.

3. The support back plate of claim 1 wherein the thickness D1 of the first fibrous layer satisfies: d1 is more than or equal to 15 mu m and less than or equal to 40 mu m;

and/or, the thickness D2 of the second fiber layer satisfies: d2 is more than or equal to 60 mu m and less than or equal to 140 mu m;

and/or, the thickness D3 of the third fiber layer satisfies: d1 is less than or equal to 15 mu m and less than or equal to 40 mu m.

4. The support back of claim 1 wherein the plurality of first grooves comprises at least one of rectangular grooves, oval grooves, hourglass grooves, dog bone grooves, waist grooves.

5. The support back of claim 1 wherein the plurality of first grooves are the same shape.

6. The support backplate of claim 1, wherein a plurality of the first grooves are disposed in the first region and the third region, the plurality of first grooves in the first region being symmetrically disposed with the plurality of first grooves in the third region along an extension of the second direction.

7. The support backplate of claim 1, wherein a plurality of the first grooves are arranged in a single column of spaces along the second direction in the first region and/or the third region.

8. The support back of claim 7 wherein in the second fiber layer, the second fibers are spaced apart along the second direction, the second fiber layer including first and second regions arranged along the second direction, the second fibers of the first region being arranged at a greater density than the second fibers of the second region, the orthographic projection of the first grooves on the second fiber layer being located in the second region.

9. The support back plate according to claim 7 or 8 wherein in the first fiber layer, the first fibers are arranged at intervals along the first direction, the first fiber layer includes a third region and a fourth region arranged along the first direction, the first fibers of the third region are arranged at a density greater than the first fibers of the fourth region, and an orthographic projection of the first grooves on the first fiber layer is located in the fourth region.

10. The support back of claim 1 further comprising a plurality of through slots disposed within the second region, the through slots extending in the second direction.

11. The support back plate of claim 10 wherein the through slots are spaced apart along the first direction;

and/or, along the second direction, the through grooves are arranged at intervals.

12. The support back plate of claim 10 wherein, in the first direction, the through slots are arranged at intervals, and adjacent two of the through slots are arranged in a staggered manner;

and/or, along the second direction, the penetrating grooves are arranged at intervals, and two adjacent penetrating grooves are arranged in a staggered manner.

13. The support back plate according to any one of claims 10 to 12 wherein in the first fiber layer, the first fibers are arranged at intervals along the first direction, the first fiber layer includes a third region and a fourth region arranged along the first direction, the arrangement density of the first fibers of the third region is greater than the arrangement density of the first fibers of the fourth region, and at least part of the orthographic projection of the through grooves on the first fiber layer is located in the fourth region;

And/or, in the third fiber layer, the third fibers are arranged at intervals along the first direction, the third fiber layer comprises a fifth region and a sixth region which are arranged along the first direction, the arrangement density of the third fibers in the fifth region is greater than that of the third fibers in the sixth region, and at least part of the orthographic projection of the through groove on the third fiber layer is positioned in the sixth region;

and/or, in the second fiber layer, the second fibers are arranged at intervals along the second direction, the second fiber layer comprises a first region and a second region which are arranged along the second direction, the arrangement density of the second fibers of the first region is greater than that of the second fibers of the second region, and at least part of orthographic projection of the through groove on the second fiber layer is positioned in the second region.

14. The support back plate of claim 1 wherein the arrangement density of the first fibers in the first fiber layer at the second region is less than the arrangement density of the first fibers in the first and/or third regions;

and/or, in the third fiber layer, the arrangement density of the third fibers in the second region is smaller than the arrangement density of the third fibers in the first region and/or the third region.

15. A display module comprising a display panel and a support backplate according to any one of claims 1 to 14, the support backplate being disposed on a backlight side of the display panel.

16. A display device comprising the display module of claim 15.