Support assembly, rollable display module, and display apparatus

Abstract

The present disclosure relates to the technical field of display. Provided are a support assembly, a rollable display module, and a display apparatus. The support assembly is configured to be connected to a backlight side of a display assembly so as to support the display assembly. The support assembly comprises an integrally formed support plate. The support plate comprises a first support layer close to the display assembly and a second support layer away from the display assembly. The first support layer comprises a plurality of first support ribs arranged at intervals in a first direction, and the second support layer comprises a plurality of second support ribs arranged at intervals in the first direction. Each first support rib and second support rib extends in a second direction, and the second direction intersects the first direction. The distance between two adjacent first support ribs is a first distance, and the distance between two adjacent second support ribs is a second distance. The ratio of the second distance to the first distance is greater than 1 and less than or equal to 20, and the ratio of the thickness of the second support layer to the thickness of the first support layer is greater than or equal to 1 and less than or equal to 10.

Description

Support components, rollable display modules and display devices

[0001] Cross-reference of related applications

[0002] This disclosure claims priority to Chinese Patent Application No. 202411936825.4, filed on December 25, 2024, entitled “Support Component, Rollable Display Module and Display Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of display technology, and in particular to a support component, a rollable display module, and a display device. Background Technology

[0004] The display module of a rollable display device includes a display component and a support component for supporting the display component. However, existing rollable display modules cannot simultaneously achieve both the rollability of the support component and the flatness of the display component.

[0005] Overview

[0006] The embodiments of this disclosure provide a support component, a rollable display module, and a display device, which improve the rollability of the support component while ensuring the flatness of the display component.

[0007] The embodiments of this disclosure adopt the following technical solutions:

[0008] On one hand, a support component is provided for connection to the backlight side of a display component to support the display component, and the support component is capable of extending or retracting along a first direction together with the display component, characterized in that the support component includes an integrally formed support plate, the support plate including a first support layer close to the display component and a second support layer away from the display component;

[0009] The first support layer includes a plurality of first support ribs spaced apart along the first direction, and the second support layer includes a plurality of second support ribs spaced apart along the first direction. Both the first support ribs and the second support ribs extend along a second direction, which intersects with the first direction.

[0010] Wherein, the spacing between two adjacent first support ribs is the first spacing, the spacing between two adjacent second support ribs is the second spacing, and the ratio of the second spacing to the first spacing is greater than 1 and less than or equal to 20; and

[0011] The ratio of the thickness of the second support layer to the thickness of the first support layer is greater than or equal to 1 and less than or equal to 10.

[0012] In some embodiments, the support plate is divided into multiple periodic units, which are closely arranged along the first direction. Different periodic units are translated symmetrically along the first direction, and in the first direction, each periodic unit includes multiple first support ribs and multiple second support ribs.

[0013] In some embodiments, the first support layer further includes connecting ribs, which connect two adjacent first support ribs and divide the gap between two adjacent first support ribs into multiple hollow areas.

[0014] The plurality of hollowed-out areas arranged along the first direction include at least two of the following:

[0015] Blind hole area, wherein the orthographic projection of the blind hole area on the second support layer is located within the range of the second support rib;

[0016] Through-hole area, wherein the orthographic projection of the through-hole area on the second support layer does not overlap with the second support rib; and

[0017] The semi-blind and semi-through area, the orthographic projection of the semi-blind and semi-through area on the second support layer overlaps with the second support rib portion.

[0018] In some embodiments, the plurality of hollowed-out areas arranged along the first direction include multiple pairs of semi-blind and semi-through areas. Each pair of semi-blind and semi-through areas includes two semi-blind and semi-through areas arranged adjacent to each other along the first direction, and the orthographic projections of the two semi-blind and semi-through areas arranged adjacent to each other along the first direction on the second support layer overlap with the same second support rib.

[0019] In some embodiments, the plurality of hollow areas arranged along the first direction include a plurality of through-hole areas, a plurality of blind-hole areas, and a plurality of semi-blind and semi-through areas;

[0020] In the first direction, a blind hole area or two semi-blind / semi-through areas are provided between two adjacent through hole areas.

[0021] In some embodiments, the plurality of blind hole regions include a first blind hole region and a second blind hole region, wherein the first blind hole region and the second blind hole region are arranged along the first direction and staggered along the second direction;

[0022] The plurality of through-hole regions include a first through-hole region and a second through-hole region, wherein the first through-hole region and the second through-hole region are arranged along the first direction and staggered along the second direction;

[0023] The plurality of semi-blind and semi-through zones include a first semi-blind and semi-through zone and a second semi-blind and semi-through zone, the first semi-blind and semi-through zone and the second semi-blind and semi-through zone are arranged along the first direction and staggered along the second direction;

[0024] In the first direction, a first blind hole area is provided between two adjacent first through hole areas, a second blind hole area is provided between two adjacent second through hole areas, and a first semi-blind semi-through area and a second semi-blind semi-through area are provided between adjacent first through hole areas and second through hole areas.

[0025] In some embodiments, the plurality of hollow areas arranged along the first direction include a plurality of through-hole areas and a plurality of blind-hole areas; and

[0026] In the first direction, a set of through-hole areas and a set of blind-hole areas are arranged alternately, with the set of through-hole areas including multiple through-hole areas and the set of blind-hole areas including multiple blind-hole areas.

[0027] In some embodiments, the plurality of blind hole regions include a first blind hole region and a second blind hole region, wherein the first blind hole region and the second blind hole region are arranged along the first direction and staggered along the second direction;

[0028] The plurality of through-hole regions include a first through-hole region and a second through-hole region, wherein the first through-hole region and the second through-hole region are arranged along the first direction and staggered along the second direction;

[0029] In the first direction, a second through-hole area is provided between two adjacent first through-hole areas, a first through-hole area is provided between two adjacent second through-hole areas, and a first blind hole area and a second blind hole area are provided between adjacent first through-hole areas and second through-hole areas.

[0030] In some embodiments, the first support rib has a first side facing the curled end of the support assembly and a second side away from the curled end of the support assembly, and the connecting ribs connected to the first side and the connecting ribs connected to the second side are arranged alternately along the second direction.

[0031] In some embodiments, the first support rib has a first side facing the curled end of the support assembly and a second side away from the curled end of the support assembly, and the number of connecting ribs connected to the first side is equal to the number of connecting ribs connected to the second side.

[0032] In some embodiments, in the direction from the first support layer to the second support layer, the depth of the blind hole area is greater than or equal to the thickness of the first support layer and less than or equal to half the thickness of the support plate, wherein the thickness of the first support layer is the thickness of the first support rib that does not overlap with the second support rib in its orthographic projection onto the second support layer.

[0033] In some embodiments, the surface of the first support layer away from the second support layer is provided with a plurality of recessed regions, the recessed regions are recessed toward the side closer to the second support layer, the plurality of recessed regions are arranged at intervals, and the plurality of recessed regions are arranged in an array.

[0034] A first support rib is provided between two adjacent recessed areas in the first direction, and a connecting rib is provided between two adjacent recessed areas in the second direction, so that the first support layer is in a grid shape.

[0035] In some embodiments, the support plate is a metal support plate or a carbon fiber composite plate. On the other hand, a rollable display module is provided, characterized in that it includes a display component and a support component as described in any one of the embodiments, connected to the backlight side of the display component, wherein the display component and the support component can extend or retract along a first direction.

[0036] In some embodiments, the display assembly includes a display panel and a cover plate, the cover plate being disposed on the side of the display panel away from the support assembly;

[0037] The cover plate includes a first sub-layer and a second sub-layer stacked together, the second sub-layer being closer to the display panel than the first sub-layer, the material of the first sub-layer including polyethylene terephthalate and / or transparent polyimide, and the material of the second sub-layer including thermoplastic polyurethane elastomer.

[0038] In some embodiments, the first sublayer and the second sublayer are thermosetting into an integral structure.

[0039] In another aspect, a display device is provided, characterized in that it includes a rollable display module as described in any one of the above.

[0040] In some embodiments, the display device further includes:

[0041] A first housing has a drive shaft and a guide shaft inside. One end of the rollable display module is connected to the drive shaft. The rollable display module can be wound around the drive shaft. In the retracted state, the support component is positioned close to the drive shaft.

[0042] During the process of the rollable display module switching from the retracted state to the unfolded state, the rollable display module unwinds from the drive shaft, passes through the guide shaft, and extends out from the first housing. During the unwinding process, the support component is positioned close to the guide shaft.

[0043] The support assembly, rollable display module, and display device provided in this disclosure include an integrally formed support plate. The support plate includes a first support layer near the display assembly and a second support layer away from the display assembly. The first support layer includes multiple first support ribs spaced apart along a first direction, and the second support layer includes multiple second support ribs spaced apart along the first direction. Both the first and second support ribs extend along a second direction, intersecting the first direction. The distance between two adjacent first support ribs is a first spacing, and the distance between two adjacent second support ribs is a second spacing. The ratio of the second spacing to the first spacing is greater than 1 and less than or equal to 20. Furthermore, the ratio of the thickness of the second support layer to the thickness of the first support layer is greater than or equal to 1 and less than or equal to 10. The second support ribs support the display assembly in the second direction, and the first support ribs form a relatively flat surface, improving the molding process. Compared to structures in related technologies, the integrally formed support plate has fewer film layers, resulting in a thinner thickness. This improves the rollability of the support assembly while maintaining the flatness of the display assembly.

[0044] The above description is merely an overview of the technical solution disclosed herein. In order to better understand the technical means of this disclosure and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this disclosure more apparent and understandable, specific embodiments of this disclosure are described below.

[0045] Brief description of the attached diagram

[0046] To more clearly illustrate the technical solutions in the embodiments of this disclosure or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 is a schematic diagram of a display device in a working state according to an embodiment of the present disclosure;

[0048] Figure 2 is a schematic diagram of a display device in a second working state according to an embodiment of this disclosure;

[0049] Figure 3 is a cross-sectional view of point AA in Figure 1;

[0050] Figure 4 is another cross-sectional view of point AA in Figure 1;

[0051] Figure 5 is a schematic diagram of the rollable display module being wound around the drive shaft;

[0052] Figure 6 is a cross-sectional view of section BB in Figure 5;

[0053] Figure 7 is a cross-sectional view of a support component provided in an embodiment of this disclosure;

[0054] Figure 8 is a three-dimensional structural diagram of a support plate provided in an embodiment of this disclosure;

[0055] Figure 9 is a magnified view of a portion of point I in Figure 8;

[0056] Figure 10 is an exploded view of some film layers in a rollable display module in the related technology;

[0057] Figure 11 is a schematic diagram of a planar structure of a support component provided in an embodiment of this disclosure;

[0058] Figure 12 is a schematic diagram of the cross-sectional structure at EE' in Figure 11;

[0059] Figure 13 is a cross-sectional structural diagram of another support component provided in an embodiment of this disclosure;

[0060] Figure 14 is a cross-sectional view of DD in Figure 8;

[0061] Figure 15 is a cross-sectional view of a cover plate.

[0062] Detailed description

[0063] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this disclosure.

[0064] In the embodiments of this disclosure, the terms "first," "second," "third," and "fourth" are used to distinguish identical or similar items with essentially the same function and effect, solely for the purpose of clearly describing the technical solutions of the embodiments of this disclosure, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0065] In embodiments of this disclosure, "a plurality of" means two or more, and "at least one" means one or more, unless otherwise expressly and specifically defined.

[0066] In the embodiments of this disclosure, the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this disclosure.

[0067] Some embodiments of this disclosure provide a display device, which can be any device with display functionality. For example, the display device can be a mobile phone, wireless device, personal data assistant (PDA), handheld or portable computer, GPS receiver / navigator, camera, MP4 video player, camcorder, game console, watch, clock, calculator, television monitor, flat panel display, computer monitor, automotive display (e.g., odometer display, etc.), navigator, cockpit controller and / or display, display of camera view (e.g., display of a rearview camera in a vehicle), electronic photograph, electronic billboard or sign, projector, architectural structure, packaging and aesthetic structure (e.g., display of an image of a piece of jewelry), etc. In this disclosure, a mobile phone is used as an example for illustration.

[0068] Figure 1 is a schematic diagram of a display device in a working state one according to an embodiment of the present disclosure, and Figure 2 is a schematic diagram of a display device in a working state two according to an embodiment of the present disclosure. As shown in Figures 1 and 2, the display device 1000 includes a rollable display module 100, through which images are displayed.

[0069] Exemplarily, the display device 1000 further includes a first housing 201 and a second housing 202. A first end of the rollable display module 100 is connected to the first housing 201, and a second end of the rollable display module 100 is connected to the second housing 202. The first housing 201 and the second housing 202 are used to support and connect the rollable display module 100. The display device 1000 can be a rollable display device 1000, including a retracted state and an unfolded state. Continuing to refer to Figures 1 and 2, the first working state can be the retracted state, and the second working state can be the unfolded state. When the display device 1000 is in the retracted state, the exposed area of ​​the display module is small, and the area of ​​the display module used to display images is small; when the display device 1000 is in the unfolded state, the exposed area of ​​the display module is large, and the area of ​​the display module used to display images is large.

[0070] During the process of switching from the unfolded state to the retracted state of the display device 1000, the first end of the rollable display module 100 gradually curls up and is stored inside the first housing 201, and the second housing 202 gradually moves closer to the first housing 201; during the process of switching from the retracted state to the unfolded state of the display device 1000, the second housing 202 moves away from the first housing 201, and the rollable display module 100, which is curled up and stored inside the first housing 201, gradually unfolds and extends out from inside the first housing 201.

[0071] Figure 3 is a cross-sectional view of section AA in Figure 1. Exemplarily, as shown in Figure 3, the first housing 201 contains a drive shaft 204 and a guide shaft 205. One end of the rollable display module 100 is connected to the drive shaft 204, and the rollable display module 100 can be wound around the drive shaft 204. When the display device 1000 is in the retracted state, the first end of the rollable display module 100 is wound around the drive shaft 204, and the support assembly 120 is positioned close to the drive shaft 204. When the display device 1000 switches from the retracted state to the unfolded state, the rollable display module 100 unwound from the drive shaft 204 and extends out of the first housing 201 after passing through the guide shaft 205. During the unwinding process, the support assembly 120 is positioned close to the guide shaft 205.

[0072] The rollable display module 100 has a first direction and a second direction, which intersect. For example, the second direction is parallel to the drive shaft or the length direction of the rollable display module 100, and the first direction is the width direction of the rollable display module 100. The first and second directions are perpendicular to each other. The first end and the second end of the rollable display module 100 are positioned opposite each other along the first direction.

[0073] The switching between the retracted state and the extended state of the display device 1000 can be done manually by the user or automatically by the display device 1000.

[0074] For example, when the user performs the operation manually, the user can hold the second housing 202 and apply a force F to move the first housing 201 along the first direction, so that the rollable display module 100 housed inside the first housing 201 is exposed, thereby switching the display device 1000 from the retracted state to the unfolded state. During the unwinding process, the first end of the rollable display module 100 applies an elastic force to the drive shaft 204. When the user removes the force F, the drive shaft 204 can rotate under the action of the elastic force, so that the first end of the rollable display module 100 is wound on the drive shaft 204, thereby switching the display device 1000 from the retracted state to the unfolded state.

[0075] Figure 4 is another cross-sectional view of section AA in Figure 1. Exemplarily, the first housing 201 also includes a motor 207 and a transmission gear 206. The output shaft of the motor 207 is connected to the drive shaft 204 via the transmission gear 206. For example, when the display device 1000 automatically switches its operating state, the motor 207 drives the drive shaft 204 to rotate, causing the first end of the rollable display module 100 to either wind around or unwind from the drive shaft 204.

[0076] For example, continuing to refer to Figures 1 and 2, the display device 1000 may further include a slide rail 203, one end of which is fixedly connected to the first housing 201, and the other end of which is fixedly connected to the second housing 202. The slide rail 203 can extend or shorten. For example, when the display device 1000 switches from a retracted state to an extended state, the slide rail 203 extends; when the display device 1000 switches from an extended state to a retracted state, the slide rail 203 shortens.

[0077] Figure 5 is a schematic diagram of a portion of the rollable display module 100 wound around the drive shaft 204, and Figure 6 is a cross-sectional view about point BB in Figure 5. As shown in Figures 5 and 6, the rollable display module 100 includes a display component 110 and a support component 120 connected to the backlight side of the display component 110. The display component 110 has a light-emitting side that emits light rays and is used to display images. The backlight side of the display component 110 is the side opposite to the light-emitting side. The support component 120 supports the display component 110, making it flatter. The support component 120 is connected to the backlight side of the display component 110 to support it, and the support component 120 can extend or retract along a first direction together with the display component 110.

[0078] Referring again to Figure 5, when the rollable display module 100 is wound around the drive shaft 204, the support component 120 is closer to the drive shaft 204 than the display component 110. For example, in a multi-turn rollable display module 100 wound around the drive shaft 204, the support component 120 of the first turn contacts the drive shaft 204, the support component 120 of the second turn contacts the display component 110 of the first turn, and so on.

[0079] In this embodiment, the radius of the drive shaft 204 and the number of turns of the display module 100 wound around the drive shaft 204 in the retracted state are not limited. For example, the radius of the drive shaft 204 is 4mm, and the retracted state has 9 turns of the rollable display module 100 wound around the drive shaft 204. The display area in the unfolded state is five times the display area in the retracted state.

[0080] In related technologies, to achieve a flatter display component, the thickness of the support component is typically increased. Increasing the thickness of the support component increases the overall thickness T of the rollable display module. A thicker T results in greater springback force during winding, leading to poorer rollability. Conversely, to improve rollability, the thickness of the support component is typically reduced. However, reducing the thickness of the support component worsens the flatness of the display component. In other words, rollable display modules in related technologies cannot simultaneously achieve both rollability and flatness of the display component.

[0081] In view of this, the present disclosure provides a new support component 120 that reduces the thickness of the support component 120 while maintaining the flatness of the display component 110, thereby improving the rollability of the rollable display module 100.

[0082] Figure 7 is a cross-sectional view of a support assembly 120 provided in an embodiment of this disclosure. As shown in Figure 7, the support assembly 120 includes a support plate 121.

[0083] Referring again to Figure 7, in some embodiments, the support assembly 120 further includes a first buffer layer 122 and a second buffer layer 123. The first buffer layer 122 is connected between the support plate 121 and the display assembly 110, and the second buffer layer 123 is connected to the side of the support plate 121 away from the display assembly 110. The first buffer layer 122 is located on the backlight side of the display assembly 110, which can make the backlight side of the display assembly 110 flatter, thereby improving the molding problem of the display assembly 110. On the other hand, it can play a buffering role when the display assembly 110 is subjected to impact force, thereby protecting the display assembly 110. The second buffer layer 123 is located on the side of the support plate 121 away from the display assembly 110. When the rollable display module 100 is wound on the drive shaft 204, the second turn of the second buffer layer 123 contacts the first turn of the display assembly 110, preventing the display assembly 110 from being scratched.

[0084] For example, continuing to refer to FIG7, along the direction close to the support plate 121, the first buffer layer 122 sequentially includes a pressure-sensitive adhesive (PSA) layer 122a, a foam adhesive layer 122b, and a pressure-sensitive adhesive (PSA) layer 122c. The thickness of the pressure-sensitive adhesive layer 122a (122c) can be 20 μm, and the thickness of the foam adhesive layer 122b can be 80 μm.

[0085] For example, continuing to refer to FIG7, along the direction away from the support plate 121, the second buffer layer 123 sequentially includes a pressure-sensitive adhesive (PSA) layer 123a and a foam layer 123b. The thickness of the PSA layer 123a can be 35 μm, and the thickness of the foam layer 123b can be 80 μm.

[0086] Of course, the composition and thickness of the first buffer layer 122 and the second buffer layer 123 can be flexibly set according to actual needs; the above is only an example.

[0087] Figure 8 is a structural schematic diagram of a support plate 121 provided in an embodiment of this disclosure. Figure 9 is a partial enlarged view of point I in Figure 8. As shown in Figures 8, 9, 11 and 12, the support plate 121 includes a first support layer 81 close to the display component 110 and a second support layer 82 away from the display component 110; the first support layer 81 includes a plurality of first support ribs 11 spaced apart along a first direction, and the second support layer 82 includes a plurality of second support ribs 12 spaced apart along the first direction. The first support ribs 11 and the second support ribs 12 both extend along a second direction, and the second direction intersects with the first direction.

[0088] The spacing between two adjacent first support ribs 11 is called the first spacing p1, and the spacing between two adjacent second support ribs 12 is called the second spacing p2. The ratio of the second spacing p2 to the first spacing p1 is greater than 1 and less than or equal to 20. Furthermore, the ratio of the thickness of the second support layer 82 to the thickness of the first support layer 81 is greater than or equal to 1 and less than or equal to 10. This design allows for a moderate equivalent modulus of the support plate 121, thus balancing flexibility and the flatness of the display components.

[0089] For example, the surface of the first support layer 81 facing away from the second support layer 82 is bonded to the first buffer layer 122, and the surface of the second support layer 82 away from the first support layer 81 is bonded to the second buffer layer 123.

[0090] The support plate 121 has a thicker thickness at the location of the second support rib 21, resulting in better rigidity and making it less prone to bending. Conversely, the area between two adjacent second support ribs 21 in the support plate 121 is thinner, has lower rigidity, and is more susceptible to bending. When the support assembly 120 is rolled up, the area between two adjacent second support ribs 21 bends. The second support ribs 21 extend along a second direction, allowing them to support the display assembly 110 in that direction and preventing bending of the display assembly 110 in that direction.

[0091] The second support rib 21 can support the display component 110 in the second direction, and the area between two adjacent second support ribs 21 is prone to bending, so that when the support component 120 is extended or rolled back along the first direction, the rebound force of the support plate 121 is small, that is, the rolling performance of the support component 120 is good.

[0092] Since the ratio of the second spacing p2 to the first spacing p1 is greater than 1 and less than or equal to 20, the arrangement density of the first support rib 11 is greater than the arrangement density of the second support rib 21. The first support rib 11 is located close to the display component 110. The denser the arrangement density of the first support rib 11, the flatter the surface of the support plate 121 on the side of the display component 110 (i.e., the support surface) is. The flatter the support surface, the more uniform the force on the backlight side of the display component 110, making it less prone to defects such as mold marks on the display component 110.

[0093] Figure 10 is an exploded view of some film layers in a rollable display module of the related art. As shown in Figure 10, the rollable display module of the related art includes a display component and a first bracket, a second bracket, and a third bracket located on the backlight side of the display component. The third bracket is a hinge structure that can extend or retract with the movement of the second housing 202. The second bracket includes multiple spaced-apart support purlins for supporting the display component in the extension direction of the purlins and facilitating the roll-up of the display component and the second bracket. The first bracket is located between the second bracket and the display component to improve the flatness of the backlight side of the display component, thereby improving the molding problem of the display component. Because the related art includes a first bracket, a second bracket, and an adhesive connecting the first bracket and the second bracket, the support component is relatively thick.

[0094] In this disclosure, the second support rib 21 is used to support the display component 110 in the second direction, and can realize the function of the second bracket in the related art. The first support rib 11 is used to form a relatively flat surface on the first side, and can realize the function of the improved molding of the first bracket in the related art. That is, the integrated support plate 121 can simultaneously realize the functions of the first bracket and the second bracket in the related art.

[0095] In this embodiment, the support plate 121 is a one-piece molded structure. A one-piece molded structure refers to a structure manufactured using a one-piece molding process, which includes, but is not limited to, stamping, casting, 3D printing, powder metallurgy, etching, and injection molding. A part manufactured using a one-piece molding process is a single component, rather than an assembly of multiple parts combined through assembly or welding processes.

[0096] Compared to the structure formed by stacking a first support, adhesive, and a second support in related technologies, the integrally molded support plate 121 has fewer film layers, resulting in a thinner thickness. This improves the rollability of the support assembly 120 while maintaining the flatness of the display component 110. Furthermore, the reduced number of parts in the support assembly 120 simplifies its manufacturing process, eliminating the need for alignment and bonding processes between the first and second supports in related technologies.

[0097] As shown in Figures 11 to 13, the first support rib 11 extends along the second direction, and multiple first support ribs 11 are arranged at intervals along the first direction. If the first direction is perpendicular to the second direction, when the support assembly 120 unfolds or curls back along the first direction, the first support rib 11 does not bend or bends only slightly, but bends in the weak area between two adjacent first support ribs 11, which makes the rebound force of the support member 121 during the curling process smaller and the curling performance of the support assembly 120 better.

[0098] In the first direction, multiple first support ribs 11 are arranged at equal intervals, with each first support rib 11 having the same width, and the gap width between any two adjacent first support ribs 11 being the same. The first spacing p1 is equal to the sum of the width of one first support rib 11 in the first direction and the gap width between two adjacent first support ribs 11.

[0099] In the first direction, multiple second support ribs 12 are arranged at equal intervals, with each second support rib 12 having the same width, and the gap width between any two adjacent second support ribs 12 being the same. The second spacing p2 is equal to the sum of the width of one second support rib 12 in the first direction and the gap width between two adjacent second support ribs 12.

[0100] For example, the ratio of the second spacing p2 to the first spacing p1 is greater than or equal to 2 and less than or equal to 5. Furthermore, the ratio of the thickness of the second support layer 82 to the thickness of the first support layer 81 is greater than or equal to 1 and less than or equal to 5. This design further optimizes the rollability and flatness of the display components.

[0101] For example, the ratio of the second spacing p2 to the first spacing p1 is 2.5, and the ratio of the thickness of the second support layer 82 to the thickness of the first support layer 81 is 3.

[0102] For example, the ratio of the width of the first support rib 11 in the first direction to the first spacing p1 is, for example, greater than or equal to 1 / 4 and less than or equal to 3 / 4.

[0103] For example, the multiple second support ribs 21 are independent strip structures, and the extension direction of the strip structures is the second direction. Within the second support layer 82, no connecting structure may be provided between two adjacent second support ribs 21.

[0104] For example, as shown in Figures 11 to 13, the support plate 121 is divided into multiple periodic units U, which are closely arranged along a first direction. Different periodic units U are translated symmetrically along the first direction, and in the first direction, each periodic unit U includes multiple first support ribs 11 and multiple second support ribs 12. A periodic unit U is the smallest unit arranged periodically along the first direction.

[0105] In some embodiments, the first support layer 81 further includes a connecting rib 12, which connects two adjacent first support ribs 11.

[0106] The connecting rib 12 connects between two adjacent first support ribs 11, meaning the extending direction of the connecting rib 12 intersects the extending direction of the first support ribs 11, allowing the connecting rib 12 to support the display assembly 110 in a direction other than the second direction. This increases the contact area between the first support layer 81 and the first buffer layer 122, making the side of the first buffer layer 122 facing the display assembly 110 flatter, further improving the molding defects of the display assembly 110.

[0107] For example, the connecting rib 12 extends along a first direction. When the support 121 is curled, the connecting rib 12 bends.

[0108] In some embodiments, the connecting rib 12 divides the gap between two adjacent first support ribs 11 into multiple hollow areas. The first support ribs 11 and the connecting ribs 12 located around the hollow areas can simultaneously support the display component 110, making the backlight side of the display component 110 more uniformly stressed, which is beneficial to improving the flatness of the display component 110 and reducing molding phenomena.

[0109] In some embodiments, as shown in Figures 8 and 11 to 13, the plurality of hollow areas arranged along the first direction include at least two of the following: a blind hole area L3, the orthographic projection of the blind hole area L3 on the second support layer 82 being located within the range of the second support rib 12; a through hole area L2, the orthographic projection of the through hole area L2 on the second support layer 82 not overlapping with the second support rib 12; and a semi-blind and semi-through area L1, the orthographic projection of the semi-blind and semi-through area on the second support layer 82 partially overlapping with the second support rib 12.

[0110] In an exemplary embodiment, as shown in Figures 8, 11 and 12, the plurality of hollowed-out areas arranged along the first direction include a plurality of pairs of semi-blind and semi-through areas L1. Each pair of semi-blind and semi-through areas L1 includes two semi-blind and semi-through areas L1 arranged adjacent to each other along the first direction, and the orthographic projections of the two semi-blind and semi-through areas L1 arranged adjacent to each other along the first direction on the second support layer 82 overlap with the same second support rib 12.

[0111] In one exemplary embodiment, as shown in Figures 8, 11, and 12, the plurality of hollowed-out areas arranged along the first direction include a plurality of through-hole areas L2, a plurality of blind-hole areas L3, and a plurality of semi-blind / semi-through areas L1. Specifically, in the first direction, a blind-hole area L3 or two semi-blind / semi-through areas L1 are disposed between two adjacent through-hole areas L2.

[0112] In an exemplary embodiment, as shown in Figures 8, 11, and 12, a plurality of blind hole regions L3 include a first blind hole region L31 and a second blind hole region L32, which are arranged along a first direction and staggered along a second direction; a plurality of through hole regions L2 include a first through hole region L21 and a second through hole region L22, which are arranged along a first direction and staggered along a second direction; a plurality of semi-blind and semi-through regions L1 include a first semi-blind and semi-through region L11 and a second semi-blind and semi-through region L12, which are arranged along a first direction and staggered along a second direction.

[0113] In the first direction, a first blind hole area L31 is provided between two adjacent first through hole areas L21, a second blind hole area L32 is provided between two adjacent second through hole areas L22, and a first semi-blind semi-through area L11 and a second semi-blind semi-through area L12 are provided between adjacent first through hole areas L21 and second through hole areas L22.

[0114] In an exemplary embodiment, as shown in Figures 8, 11, and 12, a periodic unit U includes a first semi-blind and semi-through region L11, a second semi-blind and semi-through region L12, a first through-hole region L21, a first blind hole region L31, a first through-hole region L21, a second semi-blind and semi-through region L12, a first semi-blind and semi-through region L11, a second through-hole region L22, a second blind hole region L32, and a second through-hole region L22, arranged sequentially along a first direction.

[0115] In another exemplary embodiment, as shown in FIG13, the plurality of hollow areas arranged along the first direction include a plurality of through-hole areas L2 and a plurality of blind-hole areas L3; and in the first direction, a set of through-hole areas L2 and a set of blind-hole areas L3 are arranged alternately, a set of through-hole areas L2 includes a plurality of through-hole areas L2 (three as shown in FIG13), and a set of blind-hole areas L3 includes a plurality of blind-hole areas L3 (two as shown in FIG13).

[0116] In another exemplary embodiment, as shown in FIG13, the plurality of blind hole regions L3 include a first blind hole region L31 and a second blind hole region L32, the first blind hole region L31 and the second blind hole region L32 are arranged along a first direction and staggered along a second direction; the plurality of through hole regions L2 include a first through hole region L21 and a second through hole region L22, the first through hole region L21 and the second through hole region L22 are arranged along a first direction and staggered along a second direction.

[0117] In the first direction, a second through-hole area L22 is provided between two adjacent first through-hole areas L21, a first through-hole area L21 is provided between two adjacent second through-hole areas L22, and a first blind hole area L31 and a second blind hole area L32 are provided between adjacent first through-hole areas L21 and second through-hole areas L22.

[0118] In another exemplary embodiment, as shown in FIG13, a periodic unit U includes a first through-hole region L21, a second through-hole region L22, a first through-hole region L21, a first blind hole region L31, and a second blind hole region L32 arranged sequentially along a first direction.

[0119] For example, in the direction from the first support layer 81 to the second support layer 82, the depth of the blind hole region L3 is greater than (as shown in FIG. 13) or equal to (as shown in FIG. 12) the thickness of the first support layer 81, and less than or equal to half the thickness of the support plate 121, wherein the thickness of the first support layer 81 is the thickness of the first support rib 11 that does not overlap with the second support rib 12 in the orthographic projection on the second support layer 82.

[0120] For example, in the direction from the first support layer 81 to the second support layer 82, the first sub-region in the semi-blind and semi-through region L1 partially penetrates the support plate 121, and the second sub-region completely penetrates the support plate 121. The depth of the blind hole in the first sub-region is, for example, the same as the depth of the blind hole region L3, which simplifies the process.

[0121] Referring again to Figure 8, in some embodiments, the first support rib 11 has a first side facing the curled end of the support assembly 120 and a second side away from the curled end of the support assembly 120. The connecting ribs 12 connected to the first side and the connecting ribs 12 connected to the second side are arranged alternately along a second direction. Here, the curled end of the support assembly 120 refers to the end of the support assembly 120 connected to the drive shaft 204, i.e., the first end.

[0122] For example, as shown in FIG8, the connecting rib 12 connected to the first side includes a first connecting rib 12A and a second connecting rib 12B, which are adjacent to each other along a second direction. The connecting rib 12 connected to the second side includes a third connecting rib 12C. Along the second direction, the third connecting rib 12C is located between the first connecting rib 12A and the second connecting rib 12B.

[0123] The staggered arrangement of the connecting ribs 12 along the second direction can make the backlight side of the display component 110 more evenly stressed. Of course, the connecting ribs 12 connected to the first side and the connecting ribs 12 connected to the second side can also be arranged flush along the second direction.

[0124] For example, multiple hollow areas located between two adjacent first support ribs 11 constitute a hollow area column. In the first direction, the hollow areas in two adjacent hollow area columns are staggered along the second direction, and the hollow areas in two hollow area columns arranged in alternate columns can be aligned along the second direction. In this way, the backlight side of the display component 110 can be subjected to more uniform force.

[0125] In some embodiments, the number of connecting ribs 12 connected to the first side is equal to the number of connecting ribs 12 connected to the second side.

[0126] During the curling process of the support component 120, the connecting ribs 12 bend, and the bending process generates an elastic force that can drive the connecting ribs 12 to rebound. The magnitude of the elastic force is related to the number of connecting ribs 12; the more connecting ribs 12 there are, the greater the elastic force. When the number of connecting ribs 12 connected to the first side is equal to the number of connecting ribs 12 connected to the second side, the elastic force generated at various points on the support member 121 is approximately the same during the curling process of the support component 120, thereby making the display component 110 more evenly stressed and less prone to mold marks.

[0127] Of course, the number of connecting ribs 12 connected to the first side can also be different from the number of connecting ribs 12 connected to the second side, as long as the number of connecting ribs 12 connected to the first side is also small compared with the number of connecting ribs 12 connected to the second side.

[0128] Figure 14 is a cross-sectional view of section DD in Figure 8. As shown in Figure 14, in some embodiments, the surface of the first support layer 81 away from the second support layer 82 is provided with multiple recessed regions 13. The recessed regions 13 are recessed towards the side closer to the second support layer 82, and the multiple recessed regions 13 are arranged at intervals and in an array. A first support rib 11 is provided between two adjacent recessed regions in a first direction, and a connecting rib 12 is provided between two adjacent recessed regions 13 in a second direction, so that the first support layer 81 is in a grid shape.

[0129] For example, before the recessed area 13 is provided, the first side of the support plate 121 is a flat plane. By forming a recess on the surface of the first support layer 81 facing away from the second support layer 82, a first support rib 11 and a connecting rib 12 are formed. In this way, the surfaces of the first support rib 11 and the connecting rib 12 facing the display component 110 are relatively flat, increasing the contact area between the first support rib 11 and the connecting rib 12 and the first buffer layer 122, thereby making the surface of the first buffer layer 122 facing the display component 110 flatter.

[0130] The present invention does not specifically limit the depth H3 of the recessed region 13, and can be flexibly set according to actual needs. For example, when the recessed region 13 is opposite to the second support rib 21, the depth of the recessed region 13 is less than the maximum thickness of the support plate 121 to prevent the recessed region 13 from penetrating the second support rib 21 and affecting the rigidity of the second support rib 21.

[0131] In some embodiments, the recessed region 13, whose orthographic projection on the second support layer 82 does not overlap with the second support rib 12, penetrates the support plate 121 along the thickness direction of the support plate 121. The recessed region 13 penetrates the support plate 121 along the thickness direction of the support plate 121, that is, the recessed region 13 is hollowed out.

[0132] When the support assembly 120 is curled, the area between two adjacent second support ribs 21 bends, generating an elastic force in the bent area. The magnitude of the elastic force is related to the amount of material between the two adjacent second support ribs 21; the more material, the greater the elastic force. For example, the thicker the area between the two adjacent second support ribs 21, the greater the elastic force; the larger the surface area of ​​the area between the two adjacent second support ribs 21, the greater the elastic force. Surface area refers to the area of ​​the plane containing the first and second directions.

[0133] When the recessed area 13 penetrates the support plate 121 along the thickness direction of the support plate 121, it reduces the surface area between the two adjacent second support ribs 21, reduces the elastic force, and makes the support member 121 more prone to bending.

[0134] Referring again to Figure 11, in some embodiments, multiple recessed regions 13 are arranged in an array, with a first support rib 11 provided between two adjacent recessed regions in a first direction, and a connecting rib provided between two adjacent recessed regions in a second direction, so that the first support layer 81 is in a grid shape. The grid shape makes the display component 110 more evenly stressed.

[0135] The recessed area 13 or the hollow area can have various shapes, such as circular, elliptical, rectangular, square, oval, etc. The embodiment shown in this disclosure illustrates the case where the mesh is oval.

[0136] For example, continuing to refer to FIG14, the thickness of the support plate 121 is, for example, 0.4 mm, the thickness H1 of the first support layer 81 is, for example, 0.1 mm, and the thickness H2 of the second support layer is, for example, 0.3 mm. The width W1 of the first support rib 11 along the first direction is, for example, 0.25 mm, and the first spacing p1 is 0.5 mm. The width W2 of the second support rib 21 along the first direction is 0.5 mm, the second spacing P2 is 1.25 mm, and the depth H3 of the recessed region 13 is 0.1 mm. The width of the recessed region 13 along the first direction is the gap width between two adjacent first support ribs, for example, 0.25 mm. The ratio of the second spacing p2 to the first spacing p1 is 2.5, and the ratio of the thickness of the second support layer 82 to the thickness of the first support layer 81 is 3.

[0137] For example, continuing to refer to FIG13, the thickness of the support plate 121 is, for example, 0.4 mm, the thickness H1 of the first support layer 81 is, for example, 0.1 mm, and the thickness H2 of the second support layer is, for example, 0.3 mm. The width W1 of the first support rib 11 along the first direction is, for example, 0.75 mm, and the first spacing p1 is 1.0 mm. The width W2 of the second support rib 21 along the first direction is 0.5 mm, the second spacing P2 is 1.25 mm, and the depth H3 of the recessed region 13 is 0.2 mm. The width of the recessed region 13 along the first direction is the gap width between two adjacent first support ribs, for example, 0.25 mm. The ratio of the second spacing p2 to the first spacing p1 is 1.25, and the ratio of the thickness of the second support layer 82 to the thickness of the first support layer 81 is 3.

[0138] When the support plate 121 is a metal support plate 121, the recessed areas 13 can be formed by a metal etching process. For example, if the support plate 121 is a stainless steel plate, multiple recessed areas 13 can be formed on the first side of the support plate 121 by a metal etching process, and the unetched areas can form the first support ribs 11 and connecting ribs 12. The first support layer 81 is formed by a metal etching process, which is simple and has high precision.

[0139] For example, the second support ribs 21 in the second support layer 82 are also prepared by a metal etching process. For instance, multiple second support ribs 21 are formed on the second side of the support plate 121 by a metal etching process.

[0140] The structures of the first support layer 81 and the second support layer 82 are both prepared by metal etching process. Compared with the first support and the second support in related technologies, it is not necessary to align the first support and the second support, which reduces the difficulty of the process.

[0141] Of course, the support plate 121 can also be made of other materials, such as carbon fiber. In this case, the support plate 121 with an integral structure can be prepared by the carbon fiber preparation process.

[0142] Referring again to FIG6, in some embodiments, the display assembly 110 includes a display panel 114 and a cover plate 111, the cover plate 111 being disposed on the side of the display panel 114 away from the support assembly 120, for including the display panel 114.

[0143] Figure 15 is a cross-sectional view of a cover plate 111. As shown in Figure 15, the cover plate 111 may include a first sub-layer 111a and a second sub-layer 111b stacked together. The second sub-layer 111b is closer to the display panel 114 than the first sub-layer 111a. The material of the first sub-layer 111a includes polyethylene terephthalate (PET) and / or colorless polyimide (CPI). The material of the second sub-layer 111b includes thermoplastic polyurethane (TPU).

[0144] For example, cover 111 includes a first sublayer 111a made of PET material and a second sublayer 111b made of TPU material; or, cover 111 includes a first sublayer 111a made of CPI material and a second sublayer 111b made of TPU material.

[0145] The cover plate 111 is formed by stacking a first sub-layer 111a and a second sub-layer 111b, wherein the material of the first sub-layer 111a is PET and / or CPI, and the material of the second sub-layer 111b is TPU, which can improve the impact resistance of the display component 110.

[0146] In some embodiments, the first sublayer 111a and the second sublayer 111b are thermosetting into a single structure. For example, when manufacturing the cover plate 111, TPU material is coated on the surface of the first sublayer 111a facing the display component 110, and then a thermosetting process is used to solidify the first sublayer 111a and the second sublayer 111b into a single unit. After the first sublayer 111a and the second sublayer 111b are thermosetting into a single unit, the impact resistance of the display component 110 can be improved.

[0147] In some embodiments, the thickness of the first sublayer 111a is greater than or equal to 20 μm and less than or equal to 50 μm; and / or, the thickness of the second sublayer 111b is greater than or equal to 20 μm and less than or equal to 50 μm. In this case, the cover plate 111 has better impact resistance.

[0148] In some embodiments, the display assembly 110 further includes a polarizer 113 and an optical adhesive layer 112. The polarizer 113 is located between the cover plate 111 and the display panel 114, and the optical adhesive layer 112 is bonded between the polarizer 113 and the cover plate 111. The sum of the thicknesses of the polarizer 113 and the optical adhesive layer 112 is greater than or equal to 20 μm and less than or equal to 50 μm.

[0149] By way of example, continuing to refer to FIG6, the display assembly 110 may further include a back film 115 disposed between the display panel 114 and the first buffer layer 122. The rollable display module 100 also includes a bezel adhesive 101 located at the edge of the rollable display module 100, one end of the bezel adhesive 101 being bonded to the cover plate 111 and the other end of the bezel adhesive 101 being bonded to the support assembly 120.

[0150] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A support component for connection to the backlight side of a display component to support the display component, wherein the support component is capable of extending or retracting along a first direction together with the display component, characterized in that, The support assembly includes an integrally formed support plate, the support plate including a first support layer close to the display assembly and a second support layer away from the display assembly; The first support layer includes a plurality of first support ribs spaced apart along the first direction, and the second support layer includes a plurality of second support ribs spaced apart along the first direction. Both the first support ribs and the second support ribs extend along a second direction, which intersects with the first direction. Wherein, the spacing between two adjacent first support ribs is the first spacing, the spacing between two adjacent second support ribs is the second spacing, and the ratio of the second spacing to the first spacing is greater than 1 and less than or equal to 20; and The ratio of the thickness of the second support layer to the thickness of the first support layer is greater than or equal to 1 and less than or equal to 10.

2. The support component according to claim 1, characterized in that, The support plate is divided into multiple periodic units, which are closely arranged along the first direction. Different periodic units are translated symmetrically along the first direction, and in the first direction, each periodic unit includes multiple first support ribs and multiple second support ribs.

3. The support component according to claim 1, characterized in that, The first support layer also includes connecting ribs, which connect two adjacent first support ribs and divide the gap between two adjacent first support ribs into multiple hollow areas. The plurality of hollowed-out areas arranged along the first direction include at least two of the following: Blind hole area, wherein the orthographic projection of the blind hole area on the second support layer is located within the range of the second support rib; The through-hole area, whose orthogonal projection on the second support layer does not overlap with the second support rib; as well as The semi-blind and semi-through area, the orthographic projection of the semi-blind and semi-through area on the second support layer overlaps with the second support rib portion.

4. The support component according to claim 3, characterized in that, The plurality of hollowed-out areas arranged along the first direction include multiple pairs of semi-blind and semi-through areas. Each pair of semi-blind and semi-through areas includes two semi-blind and semi-through areas arranged adjacent to each other along the first direction. The orthographic projections of the two semi-blind and semi-through areas arranged adjacent to each other along the first direction on the second support layer overlap with the same second support rib.

5. The support component according to claim 3, characterized in that, The plurality of hollow areas arranged along the first direction include a plurality of through-hole areas, a plurality of blind-hole areas, and a plurality of semi-blind and semi-through areas; In the first direction, a blind hole area or two semi-blind / semi-through areas are provided between two adjacent through hole areas.

6. The support component according to claim 5, characterized in that, The plurality of blind hole regions include a first blind hole region and a second blind hole region, wherein the first blind hole region and the second blind hole region are arranged along the first direction and are staggered along the second direction; The plurality of through-hole regions include a first through-hole region and a second through-hole region, wherein the first through-hole region and the second through-hole region are arranged along the first direction and staggered along the second direction; The plurality of semi-blind and semi-through zones include a first semi-blind and semi-through zone and a second semi-blind and semi-through zone, the first semi-blind and semi-through zone and the second semi-blind and semi-through zone are arranged along the first direction and staggered along the second direction; In the first direction, a first blind hole area is provided between two adjacent first through hole areas, a second blind hole area is provided between two adjacent second through hole areas, and a first semi-blind semi-through area and a second semi-blind semi-through area are provided between adjacent first through hole areas and second through hole areas.

7. The support component according to claim 3, characterized in that, The plurality of hollow areas arranged along the first direction include a plurality of through-hole areas and a plurality of blind-hole areas; and In the first direction, a set of through-hole areas and a set of blind-hole areas are arranged alternately, with the set of through-hole areas including multiple through-hole areas and the set of blind-hole areas including multiple blind-hole areas.

8. The support component according to claim 7, characterized in that, The plurality of blind hole regions include a first blind hole region and a second blind hole region, wherein the first blind hole region and the second blind hole region are arranged along the first direction and are staggered along the second direction; The plurality of through-hole regions include a first through-hole region and a second through-hole region, wherein the first through-hole region and the second through-hole region are arranged along the first direction and staggered along the second direction; In the first direction, a second through-hole area is provided between two adjacent first through-hole areas, a first through-hole area is provided between two adjacent second through-hole areas, and a first blind hole area and a second blind hole area are provided between adjacent first through-hole areas and second through-hole areas.

9. The support component according to claim 3, characterized in that, The first support rib has a first side facing the curled end of the support assembly and a second side away from the curled end of the support assembly, and the connecting ribs connected to the first side and the connecting ribs connected to the second side are arranged alternately along the second direction.

10. The support component according to claim 3, characterized in that, The first support rib has a first side facing the curled end of the support assembly and a second side away from the curled end of the support assembly, and the number of connecting ribs connected to the first side is equal to the number of connecting ribs connected to the second side.

11. The support component according to claim 3, characterized in that, In the direction from the first support layer to the second support layer, the depth of the blind hole area is greater than or equal to the thickness of the first support layer and less than or equal to half the thickness of the support plate, wherein the thickness of the first support layer is the thickness of the first support rib that does not overlap with the second support rib in its orthographic projection onto the second support layer.

12. The support component according to any one of claims 1 to 11, characterized in that, The surface of the first support layer away from the second support layer is provided with a plurality of recessed areas. The recessed areas are recessed toward the side closer to the second support layer. The plurality of recessed areas are arranged at intervals and in an array. A first support rib is provided between two adjacent recessed areas in the first direction, and a connecting rib is provided between two adjacent recessed areas in the second direction, so that the first support layer is in a grid shape.

13. The support component according to any one of claims 1 to 11, characterized in that, The support plate is a metal support plate or a carbon fiber composite plate.

14. A rollable display module, characterized in that, The device includes a display component and a support component as described in any one of claims 1 to 13, connected to the backlight side of the display component, wherein the display component and the support component can extend or retract along a first direction.

15. The rollable display module according to claim 14, characterized in that, The display component includes a display panel and a cover plate, the cover plate being disposed on the side of the display panel away from the support component; The cover plate includes a first sub-layer and a second sub-layer stacked together, the second sub-layer being closer to the display panel than the first sub-layer, the material of the first sub-layer including polyethylene terephthalate and / or transparent polyimide, and the material of the second sub-layer including thermoplastic polyurethane elastomer.

16. The rollable display module according to claim 15, characterized in that, The first sublayer and the second sublayer are thermosetting into a single structure.

17. A display device, characterized in that, Includes the rollable display module as described in any one of claims 14 to 16.

18. The display device according to claim 17, characterized in that, The display device further includes: A first housing has a drive shaft and a guide shaft inside. One end of the rollable display module is connected to the drive shaft. The rollable display module can be wound around the drive shaft. In the retracted state, the support assembly is positioned close to the drive shaft. During the process of the rollable display module switching from the retracted state to the unfolded state, the rollable display module unwinds from the drive shaft, passes through the guide shaft, and extends out from the first housing. During the unwinding process, the support component is positioned close to the guide shaft.

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