Rollable display module and display device
By introducing a hollow support layer and filling part into the flexible display module, the problem of heat dissipation difficulty after flexible electronic devices are rolled up is solved, and better heat management and display performance are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-23
- Publication Date
- 2026-04-07
AI Technical Summary
Flexible electronic devices have difficulty dissipating heat after being rolled up, which leads to a larger maximum temperature and temperature difference in the display area, affecting the lifespan of the device and the display effect.
A rollable display module is designed, including a flexible display panel, a support layer and a filling part. The support layer has a hollow area, and the filling part is located in the hollow area and connected to the adhesive layer. When the module is rolled up, the filling part contacts the side wall of the hollow area to enhance heat conduction and convection heat transfer.
It improves the module's heat dissipation capacity, reduces temperature differences, extends equipment lifespan, and enhances display performance.
Smart Images
Figure CN121811754A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of display device technology, and in particular to a rollable display module and display device. Background Technology
[0002] Flexible electronic devices, due to their bendability, foldability, and lightweight characteristics, represent a development direction for fields such as consumer electronics. Flexible electronic devices can be deformed in various ways, with roll-up devices being one example. However, in roll-up devices, the display area accumulates after being rolled up and enclosed within the overall casing, making heat dissipation difficult. This leads to a larger maximum temperature and maximum temperature difference (maximum temperature - minimum temperature) in the display area, resulting in reduced electronic device lifespan and increased color differences in the display area. Summary of the Invention
[0003] The present invention provides a rollable display module and a display device. The rollable display module can enhance the internal heat conduction of the module and enhance the convective heat transfer on the module surface, thereby improving the heat dissipation capacity of the module.
[0004] To achieve the above objectives, the present invention provides the following technical solution: A rollable display module, comprising: Flexible display panel; A support layer is located on the non-light-emitting side of the flexible display panel, and the support layer includes multiple hollow areas; An adhesive layer is located between the flexible display panel and the support layer to fix the support layer to the flexible display panel. Multiple filling portions are provided, each of which corresponds to one of the multiple hollow areas. Each filling portion is located within the corresponding hollow area and is connected to the adhesive layer. The thickness of the filling portion along the first direction is less than or equal to the thickness of the support layer along the first direction, where the first direction is the thickness direction of the flexible display panel. The rollable display module can be rolled up along the rolling direction; when the rollable display module is in the rolled state, the two sidewalls of the filling part arranged along the rolling direction contact the sidewall of the hollow area.
[0005] Optionally, the adhesive layer includes a substrate, a first adhesive layer, and a second adhesive layer, wherein the first adhesive layer is located on the side of the substrate facing the flexible display panel, and the second adhesive layer is located on the side of the substrate facing the support layer; The material of the filling portion is the same as the material of the substrate; The filler portion is integral with the substrate; or the filler portion is bonded to the second adhesive layer.
[0006] Optionally, the substrate material is silicone.
[0007] Optionally, the angle between the sidewalls of the filling portion arranged along the curling direction and the centerline of the filling portion is a preset angle, wherein the preset angle is:
[0008] in, d The distance between the center lines of two adjacent hollowed-out areas along the curling direction, wherein the extending direction of the center line is perpendicular to both the curling direction and the first direction. R The curvature radius of the rollable display module. t The thickness of the support layer along the first direction.
[0009] Optionally, the rollable display module includes a plurality of rollable areas arranged sequentially along the roll-up direction; Along the curling direction, the curling radius of the plurality of curled regions gradually increases, and the preset included angle of the filling portion of the plurality of curled regions gradually decreases.
[0010] Optionally, the cross-sectional shape of the filling portion along the curling direction is rectangular; When the rollable display module is in a flattened state, there is a gap between the two sidewalls of the filling part arranged along the rolling direction and the sidewall of the hollow area.
[0011] Optionally, the width of the filling portion along the curling direction is a preset width, wherein the preset width is:
[0012] Wherein, d is the distance between the center points of two adjacent hollow areas along the curling direction, R is the curling radius of the rollable display module, t is the thickness of the support layer along the first direction, and a is the tolerance of the thickness of the filling portion along the first direction.
[0013] Optionally, the rollable display module includes a plurality of rollable areas arranged sequentially along the roll-up direction; Along the curling direction, the curling radius of the plurality of curled regions gradually increases, and the preset width of the filling portion of the plurality of curled regions gradually increases.
[0014] Optionally, the support layer includes a plurality of hollowed-out areas arranged sequentially along the curling direction; or, The support layer includes a plurality of hollowed-out area groups arranged sequentially along the curling direction, and each hollowed-out area group includes at least two hollowed-out areas arranged along a second direction, which is perpendicular to the curling direction and the first direction.
[0015] The present invention also provides a display device, including any of the rollable display modules provided in the above technical solutions.
[0016] This invention provides a rollable display module and display device. The rollable display module includes a flexible display panel, a support layer, an adhesive layer, and multiple filling portions. The support layer is located on the non-light-emitting side of the flexible display panel and includes multiple hollow areas. The adhesive layer is located between the flexible display panel and the support layer to fix the support layer to the flexible display panel. The multiple filling portions are located one-to-one within the multiple hollow areas and are connected to the adhesive layer. The rollable display module can be rolled up along the rolling direction. When the rollable display module is in a rolled state, the two sidewalls of the filling portions arranged along the rolling direction can contact the sidewalls of the hollow areas. The filling portions can fill the hollow areas of the rolled part of the module as much as possible, which can enhance the internal heat conduction of the module and expel air that is not easy to circulate in the hollow areas of the support layer, thereby enhancing the convective heat transfer on the module surface and improving the heat dissipation capacity of the module. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of a flexible curling device in related technologies; Figure 2 This is a schematic diagram of the state of the curling module in the related technology; Figure 3 This is a schematic diagram of the structure of a curling module in related technologies; Figure 4 This is a schematic diagram of the structure of a rollable display module provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the curled state of a rollable display module provided in an embodiment of the present invention; Figure 6 This is a schematic diagram showing the unfolded state of an adhesive layer and a filler portion provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the curled state of the adhesive layer and the filler portion provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the curled state of a rollable display module provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the flattened state of a rollable display module provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of an adhesive layer and a filler portion provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of another rollable display module provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the curled state of another curlable display module provided in an embodiment of the present invention; Figure 13 This is a schematic diagram showing the unfolded state of another adhesive layer and filler portion provided in an embodiment of the present invention; Figure 14 A schematic diagram illustrating the curled state of another adhesive layer and filler portion provided in an embodiment of the present invention; Figure 15 This is a schematic diagram of the curled state of another curlable display module provided in an embodiment of the present invention; Figure 16 This is a schematic diagram of another rollable display module in its flattened state provided by an embodiment of the present invention; Figure 17 This is a schematic diagram of another adhesive layer and filler provided in an embodiment of the present invention; Figure 18 This is a schematic diagram of another adhesive layer and filler provided in an embodiment of the present invention; Figure 19 This is a manufacturing process diagram of an adhesive layer and a filler portion provided in an embodiment of the present invention; Figure 20 This is a schematic diagram of another rollable display module provided in an embodiment of the present invention; Figure 21 This is a schematic diagram of another rollable display module provided in an embodiment of the present invention.
[0018] icon: 01-Curling module; A-Fixing area; B-Flexible curling area; 011-Protective layer; 012-Polarizing film; 013-Flexible display panel; 014-Adhesive layer; 015-Supporting layer; 0151-Knock-out area; 02-Complete casing; 1-Flexible display panel; 2-Adhesive layer; 3-Support layer; 31-Knockout area; 4-Filling part; 5-Polarizing film; 6-Protective layer; 7-Back protective film; 8-Lower mold; 9-Upper mold; B1-First curling area; B2-Second curling area; B3-Third curling area; B4-Fourth curling area. Detailed Implementation
[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0020] In related technologies, such as Figure 1 and Figure 2As shown, the flexible curling device includes a curling module 01 and a casing 02. The curling module is divided into a fixed area A and a flexible curling area B. The fixed area A is exposed to the outside, occupies a large space, and has high convective heat exchange efficiency with the outside. The flexible curling area B is placed inside the casing 02, occupies a small space, and has low convective heat exchange efficiency with the outside. Figure 3 As shown, the rollable module 01 includes a protective layer 011, a polarizer 012, a flexible display panel 013, an adhesive layer 014, and a support layer 015. The support layer 015 supports the module and restricts its degrees of freedom except for the roll direction. The adhesive layer 015 bonds the flexible display panel 013 to the support layer 015. To facilitate roll-up and reduce rebound force, the support layer 015 is designed with a perforated shape. The perforated area 0151 on the support layer 015 blocks heat conduction and hinders airflow, thus impeding convective heat transfer.
[0021] To address the aforementioned technical problems, this invention provides a rollable display module, such as... Figures 4 to 7 As shown, it includes: Flexible display panel 1; Support layer 3 is located on the non-light-emitting side of flexible display panel 1, and support layer 3 includes multiple hollow areas 31; Adhesive layer 2 is located between flexible display panel 1 and support layer 3 to fix support layer 3 to flexible display panel 1; Multiple filling portions 4 correspond one-to-one with multiple hollow areas 31. Each filling portion 4 is located in the corresponding hollow area 31 and is connected to the adhesive layer 2. The thickness of the filling portion 4 along the first direction is less than or equal to the thickness of the support layer 3 along the first direction. The first direction is the thickness direction of the flexible display panel 1. The rollable display module can be rolled up along the rolling direction; when the rollable display module is in the rolled state, the two sidewalls of the filling part 4 arranged along the rolling direction contact the sidewall of the hollow area 31.
[0022] The rollable display module provided in this embodiment of the invention includes a flexible display panel 1, a support layer 3, an adhesive layer 2, and multiple filling portions 4. The support layer 3 is located on the non-light-emitting side of the flexible display panel 1 and includes multiple hollow areas 31. The adhesive layer 2 is located between the flexible display panel 1 and the support layer 3 to fix the support layer 3 to the flexible display panel 1. The multiple filling portions 4 are located one-to-one within the multiple hollow areas 31 and are connected to the adhesive layer 2. The rollable display module can be rolled up along the rolling direction. When the rollable display module is in a rolled state, the two sidewalls of the filling portions 4 arranged along the rolling direction can contact the sidewalls of the hollow areas 31. The filling portions 4 can fill the hollow areas 31 of the rolled part of the module as much as possible, which can enhance the internal heat conduction of the module and at the same time expel the air that is not easy to circulate in the hollow areas 31 of the support layer 3, enhance the convective heat transfer on the module surface, and thus improve the heat dissipation capacity of the module.
[0023] Specifically, the rollable display module can be rectangular in design, and the rolling direction can be either the arrangement direction of the two long sides or the arrangement direction of the two short sides of the rollable display module. There are no restrictions here, and it depends on the actual situation.
[0024] Specifically, at least a portion of the rollable display module can switch between a rolled-up state and a flattened state. For example, a portion of the rollable display module can switch between a rolled-up state and a flattened state, while another portion can remain in a flattened state; or, the entire rollable display module can switch between a rolled-up state and a flattened state, and the entire rollable display module can be rolled up inside the casing of the device, so that the part to be used can be pulled out from inside the casing to flatten it when in use.
[0025] Specifically, the thickness of the filling portion 4 along the first direction h The thickness may not exceed that of the support layer 3 along the first direction. t ,For example, h = t - a , a The thickness tolerance for the filler part 4 is generally around 0.2mm.
[0026] Specifically, the flexible display panel 1 can be an organic electroluminescent display panel (OLED). Alternatively, the flexible display panel 1 can also be other types of display panels, which are not limited here.
[0027] In embodiments of the present invention, such as Figure 4 and Figure 6 As shown, when the rollable display module is in a flattened state, the two sidewalls of the filling part 4 arranged along the rolling direction can be in no contact with the sidewalls of the hollow area 31, thus having no impact on the heat dissipation of the rollable display module. However, as... Figure 5 and Figure 7 As shown, when the rollable display module is in a rolled state, both the adhesive layer 2 and the support layer 3 will roll up. The distance between the two sidewalls of the hollow area 31 of the rolled part of the support layer 3 along the rolling direction will become smaller, and it can come into contact with the filling part 4. The filling part 4 fills the hollow area 31, which can enhance the heat conduction inside the module and the convection heat transfer on the module surface, thereby improving the heat dissipation capacity of the module.
[0028] Optionally, such as Figure 8 and Figure 9 As shown, the angle between the sidewalls of the filling part 4 arranged along the curling direction and the center line of the filling part 4 is a preset angle, which can be:
[0029] in, d The distance between the center lines of two adjacent openwork areas 31 along the curling direction, wherein the extension direction of the center line is perpendicular to the curling direction and the first direction. R The curl radius of the curlable display module. t The thickness of the support layer 3 along the first direction.
[0030] In the aforementioned rollable display module, the angle between the sidewalls of the filling part 4 arranged along the rolling direction and the center line of the filling part 4 can be accurately designed to fit the structure that allows the filling part 4 to contact the sidewalls of the hollow area 31 when the module is rolled up, thereby improving the heat dissipation capacity of the module.
[0031] Specifically, such as Figure 4 and Figure 6 As shown, the cross-sectional shape of the filling part 4 along the curling direction can be an isosceles trapezoid or an isosceles triangle, which is simple in structure and easy to manufacture.
[0032] Specifically, the included angle between the two sidewalls of the filling part 4 arranged along the curling direction can be 2°. n .
[0033] Specifically, the rollable display module is rolled up along the rolling direction. The rollable display module can be rolled up in multiple layers within the casing. The rolling radius is different in different areas of the module. When the rollable display module is unfolded, the rolling radius is larger in areas further away from the casing.
[0034] Specifically, the rollable display module may include multiple rollable regions arranged sequentially along the rollable direction; along the rollable direction, the rollable radius of the multiple rollable regions gradually increases, and the preset included angle of the filling part 4 of the multiple rollable regions can gradually decrease, so as to adapt to the structure of different rollable radii at different positions of the rollable display module.
[0035] For example, such as Figure 10As shown, the rollable display module may include a first rollable region B1, a second rollable region B2, a third rollable region B3, and a fourth rollable region B4 arranged sequentially along the rollable direction. In the rolled-up state, the rollable radius of the first rollable region B1 is R1, the rollable radius of the second rollable region B2 is R2, the rollable radius of the third rollable region B3 is R3, and the rollable radius of the fourth rollable region B4 is R4, where R4 > R3 > R2 > R1. In the rollable display module, the widths of multiple hollow areas 31 along the rolling direction can be equal, the spacing between two adjacent hollow areas 31 can be equal, the widths of multiple filling parts 4 along the rolling direction can be equal, and the thicknesses of multiple filling parts 4 along the first direction can be equal. Specifically, the following settings can be made: the preset angle of the filling part 4 located in the first rolling area B1 > the preset angle of the filling part 4 located in the second rolling area B2 > the preset angle of the filling part 4 located in the third rolling area B3 > the preset angle of the filling part 4 located in the fourth rolling area B4.
[0036] Optionally, such as Figures 11 to 14 As shown, the cross-sectional shape of the filling part 4 along the curling direction can be rectangular; when the rollable display module is in a flattened state, there can be a gap between the two sidewalls of the filling part 4 arranged along the curling direction and the sidewall of the hollow area 31, resulting in a simple structure that is easy to manufacture. And as... Figure 12 and Figure 14 As shown, when the rollable display module is in a rolled state, both the adhesive layer 2 and the support layer 3 will roll up. The distance between the two sidewalls of the hollow area 31 of the rolled part of the support layer 3 along the rolling direction will become smaller, so that it can come into contact with the filling part 4. The filling part 4 can fill the hollow area 31 as much as possible, which can enhance the heat conduction inside the module and the convection heat transfer on the module surface, thereby improving the heat dissipation capacity of the module.
[0037] Specifically, such as Figure 15 and Figure 16 As shown, the width of the filling part 4 along the curling direction is a preset width, which can be:
[0038] in, d The distance between the center lines of two adjacent openwork areas 31 along the curling direction. R The curl radius of the curlable display module. t The thickness of the support layer 3 along the first direction is... a The tolerance is the thickness of the filling part 4 along the first direction.
[0039] In the aforementioned rollable display module, the width of the filling part 4 along the rolling direction can be accurately designed to fit the structure of the filling part 4 in contact with the side wall of the hollow area 31 when the module is rolled up, thereby improving the heat dissipation capacity of the module.
[0040] Specifically, the rollable display module includes multiple rollable regions arranged sequentially along the rollable direction; along the rollable direction, the rollable radius of the multiple rollable regions gradually increases, and the preset width of the filling portion 4 of the multiple rollable regions gradually increases, which can adapt to the structure of different rollable radii at different positions of the rollable display module.
[0041] For example, a rollable display module may include a first rollable region B1, a second rollable region B2, a third rollable region B3, and a fourth rollable region B4 arranged sequentially along the rollable direction. In the rolled-up state, the rollable radius of the first rollable region B1 is R1, the rollable radius of the second rollable region B2 is R2, the rollable radius of the third rollable region B3 is R3, and the rollable radius of the fourth rollable region B4 is R4, where R4 > R3 > R2 > R1. In the rollable display module, the width of the multiple cutout regions 31 along the rollable direction and the distance between two adjacent cutout regions 31 along the rollable direction are also specified. d The thicknesses of multiple filling parts 4 along the first direction can be equal. Specifically, the width of the filling part 4 in the first curling region B1 along the curling direction can be less than the width of the filling part 4 in the second curling region B2 along the curling direction, which is less than the width of the filling part 4 in the third curling region B3 along the curling direction.
[0042] It should be noted that the number of curlable areas arranged sequentially along the curling direction in the curlable display module is not limited here and depends on the actual situation.
[0043] In this embodiment of the invention, the support layer 3 may include a plurality of hollowed-out areas 31 arranged sequentially along the curling direction; correspondingly, the adhesive layer 2 may be connected with a plurality of filling portions 4 arranged sequentially along the curling direction, such as... Figure 17 As shown, the structure is simple and easy to manufacture.
[0044] Alternatively, the support layer 3 may include multiple sets of hollow regions 31 arranged sequentially along the curling direction, each set of hollow regions 31 including at least two hollow regions 31 arranged along a second direction, the second direction being perpendicular to both the curling direction and the first direction; correspondingly, the adhesive layer 2 may be provided with multiple sets of filling portions 4 arranged along the curling direction, each set of filling portions 4 including at least two hollow regions 31 arranged along the second direction, such as... Figure 18 As shown, the structure is simple and easy to design.
[0045] Specifically, the arrangement of the multiple hollow areas 31 on the support layer 3 is not limited here and depends on the actual situation.
[0046] Specifically, the material of the support layer 3 can be metal or carbon fiber, etc., without limitation, depending on the actual situation. The support layer 3 is responsible for supporting the module and restricting the module's degrees of freedom other than the curling direction. The hollow area on the support part can help reduce the rebound force when in the curled state.
[0047] In this embodiment of the invention, the adhesive layer 2 may include a substrate, a first adhesive layer, and a second adhesive layer. The first adhesive layer is located on the side of the substrate facing the flexible display panel 1, and the second adhesive layer is located on the side of the substrate facing the support layer 3. The adhesive layer 2 can be bonded to the flexible display panel 1 via the first adhesive layer and to the support layer 3 via the second adhesive layer.
[0048] Specifically, the first and second adhesive layers can be commonly used UV-curable adhesives or transparent optical adhesives; there are no restrictions here, and the choice depends on the actual situation.
[0049] Specifically, the filler part 4 can be an integral structure with the substrate, meaning the filler part 4 is connected to the substrate, resulting in a simple structure that is easy to manufacture. This integral structure of the filler part 4 and the substrate can be fabricated using a mold. For example... Figure 19 As shown, the integral structure of the filling part 4 and the substrate can be manufactured using a lower mold 8 and an upper mold 9 that are positioned opposite each other. After the filling part 4 and the substrate are manufactured, a first adhesive layer and a second adhesive layer can be applied to both sides of the substrate.
[0050] Alternatively, the filler 4 and the adhesive layer 2 can be separate structures, with the filler 4 bonded to the second adhesive layer. The adhesive layer 2 and the filler 4 can be formed separately using a mold, and then a first adhesive layer and a second adhesive layer can be applied to both sides of the adhesive layer 2, thereby bonding the filler 4 to the second adhesive layer.
[0051] Specifically, the material of the filler portion 4 is the same as the material of the substrate. For example, if the substrate is made of silicone, then the filler portion 4 is also made of silicone. When the filler portion 4 and the adhesive layer 2 are designed separately, the materials of the filler portion 4 and the adhesive layer 2 can also be different.
[0052] In embodiments of the present invention, such as Figure 20 As shown, the rollable display module may further include a polarizer 5 and a protective layer 6; wherein, the polarizer 5 is located on the light-emitting side of the flexible display panel 1, and the protective layer 6 is located on the side of the polarizer 5 facing away from the flexible display panel 1. The polarizer 5 can eliminate ambient light reflection and improve the screen's visibility under strong light. The protective layer 6 can improve the durability, display effect, and user experience of the display module. The material of the protective layer 6 can be ultra-thin flexible glass or transparent polyimide, etc., without limitation, depending on the actual situation.
[0053] In embodiments of the present invention, such as Figure 21As shown, the rollable display module may also include a back protective film 7, which is located on the side of the support layer 3 facing away from the flexible display panel 1. The back protective film 7 can protect the module from scratches during the rolling process. Without the filling part 4, the back protective film 7 may seal the air in the hollow area 31 of the support layer 3, making it more difficult for heat to dissipate. The filling part 4 can expel the air that is difficult to circulate in the hollow area 31 of the support layer 3, enhance the convective heat transfer on the module surface, and thus improve the heat dissipation capacity of the module.
[0054] The present invention also provides a display device, including any of the rollable display modules provided in the above technical solutions.
[0055] The display device provided in this embodiment of the invention includes a rollable display module, which comprises a flexible display panel 1, a support layer 3, an adhesive layer 2, and multiple filling portions 4. The support layer 3 is located on the non-light-emitting side of the flexible display panel 1 and includes multiple hollow areas 31. The adhesive layer 2 is located between the flexible display panel 1 and the support layer 3 to fix the support layer 3 to the flexible display panel 1. The multiple filling portions 4 are located one-to-one within the multiple hollow areas 31 and are connected to the adhesive layer 2. The rollable display module can be rolled up along the rolling direction. When the rollable display module is in a rolled-up state, the two sidewalls of the filling portions 4 arranged along the rolling direction can contact the sidewalls of the hollow areas 31. The filling portions 4 can fill the hollow areas 31 of the rolled-up part of the module as much as possible, which can enhance the internal heat conduction of the module and at the same time expel the air that is not easy to circulate in the hollow areas 31 of the support layer 3, enhance the convective heat transfer on the surface of the module, and thus improve the heat dissipation capacity of the display device.
[0056] Specifically, the display device provided in the embodiments of the present invention also includes a housing, and the rollable display module can be rolled up and stored inside the housing, or pulled out from the housing and flattened for display.
[0057] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.
Claims
1. A rollable display module, characterized in that, include: Flexible display panel; A support layer is located on the non-light-emitting side of the flexible display panel, and the support layer includes multiple hollow areas; An adhesive layer is located between the flexible display panel and the support layer to fix the support layer to the flexible display panel. Multiple filling portions are provided, each of which corresponds to one of the multiple hollow areas. Each filling portion is located within the corresponding hollow area and is connected to the adhesive layer. The thickness of the filling portion along the first direction is less than or equal to the thickness of the support layer along the first direction, where the first direction is the thickness direction of the flexible display panel. The rollable display module can be rolled up along the rolling direction; when the rollable display module is in the rolled state, the two sidewalls of the filling part arranged along the rolling direction contact the sidewall of the hollow area.
2. The rollable display module according to claim 1, characterized in that, The adhesive layer includes a substrate, a first adhesive layer, and a second adhesive layer. The first adhesive layer is located on the side of the substrate facing the flexible display panel, and the second adhesive layer is located on the side of the substrate facing the support layer. The material of the filling portion is the same as the material of the substrate; The filler portion is integral with the substrate; or the filler portion is bonded to the second adhesive layer.
3. The rollable display module according to claim 2, characterized in that, The substrate is made of silicone.
4. The rollable display module according to claim 1, characterized in that, The angle between the sidewalls of the filling portion arranged along the curling direction and the centerline of the filling portion is a preset angle, and the preset angle is: in, d The distance between the center lines of two adjacent hollowed-out areas along the curling direction, wherein the extending direction of the center line is perpendicular to both the curling direction and the first direction. R The curvature radius of the rollable display module. t The thickness of the support layer along the first direction.
5. The rollable display module according to claim 4, characterized in that, The rollable display module includes a plurality of rollable areas arranged sequentially along the rollable direction; Along the curling direction, the curling radius of the plurality of curled regions gradually increases, and the preset included angle of the filling portion of the plurality of curled regions gradually decreases.
6. The rollable display module according to claim 1, characterized in that, The cross-sectional shape of the filling portion along the curling direction is rectangular; When the rollable display module is in a flattened state, there is a gap between the two sidewalls of the filling part arranged along the rolling direction and the sidewall of the hollow area.
7. The rollable display module according to claim 6, characterized in that, The width of the filling portion along the curling direction is a preset width, and the preset width is: Wherein, d is the distance between the center points of two adjacent hollow areas along the curling direction, R is the curling radius of the rollable display module, t is the thickness of the support layer along the first direction, and a is the tolerance of the thickness of the filling portion along the first direction.
8. The rollable display module according to claim 6, characterized in that, The rollable display module includes a plurality of rollable areas arranged sequentially along the rollable direction; Along the curling direction, the curling radius of the plurality of curled regions gradually increases, and the preset width of the filling portion of the plurality of curled regions gradually increases.
9. The rollable display module according to claim 1, characterized in that, The support layer includes a plurality of hollowed-out areas arranged sequentially along the curling direction; or, The support layer includes a plurality of hollowed-out area groups arranged sequentially along the curling direction, and each hollowed-out area group includes at least two hollowed-out areas arranged along a second direction, which is perpendicular to the curling direction and the first direction.
10. A display device, characterized in that, Includes the rollable display module as described in any one of claims 1-9.