Rollable display module and display device

Abstract

Embodiments of the present application provide a rollable display module and a display device. The display panel includes a flexible screen, a first support body, and a second support body. The first support body includes a first sub-layer, and the second support body includes a second sub-layer. The first sub-layer and the second sub-layer each include a plurality of protrusions arranged in an array, and a groove is arranged between adjacent protrusions. When the flexible screen is in an unfolded state and a curved state, the first sub-layer and the second sub-layer have different alignment and cooperation relationships. When the first sub-layer and the second sub-layer are attached to each other, the distance is reduced, which can ensure the support effect of the first support body and the second support body on the flexible screen. When the first sub-layer and the second sub-layer are separated from each other, the flexible screen has good bending and folding performance, thereby ensuring that the display panel and the device in the embodiments of the present application have good bending performance and good support effect, and the comprehensive performance of the panel is ensured.

Description

Technical Field

[0001] This invention relates to the field of design and manufacturing technology of rollable display modules, and in particular to a rollable display module and display device. Background Technology

[0002] With the continuous development of display panel manufacturing technology, people have put forward higher requirements for the quality and display performance of display panels.

[0003] To further improve the versatility of display panels, flexible and foldable panels are widely used in various scenarios and fields. For flexible rollable display modules or devices, the quality of their bending performance directly affects the overall performance of the panel. In existing technologies, a rollable screen is typically used to achieve bending and folding of the panel when setting up a flexible rollable display module. However, the structure of the rollable screen and the corresponding panel is often unreasonable. The rollable screen lacks support when unfolded, and the existing rollable screens usually rely on a cover plate for support. While the cover plate is typically made of a rigid material, although it provides good support, its bending effect is not ideal, hindering the bending or folding of the flexible rollable screen and thus reducing the bending or folding performance of the flexible rollable display module.

[0004] In summary, the flexible rollable display modules or devices prepared in the prior art have unreasonable structural settings, and the bending effect of the flexible rollable screen is not ideal when bent or folded, which is not conducive to further improving the overall performance of the panel. Summary of the Invention

[0005] This invention provides a rollable display module and display device to effectively improve the bending and folding performance of existing rollable display modules, ensuring that the rollable screen has good support performance while also having good bending or folding performance.

[0006] To address the aforementioned technical problems, a first aspect of this invention provides a rollable display module, comprising:

[0007] Flexible screen;

[0008] The first support is located on the back side of the flexible screen;

[0009] The second support is located on the back side of the flexible screen and is disposed opposite to the first support;

[0010] The first support includes a first sub-layer, and the second support includes a second sub-layer. The first sub-layer and the second sub-layer are detachably and jointly disposed.

[0011] Each of the second sub-layers includes an array of protrusions, and at least in the bending direction of the rollable display module, there is a groove between adjacent protrusions, and the first sub-layer and the second sub-layer can be engaged with the protrusions of the opposite layer through the grooves.

[0012] According to one embodiment of the present invention, the first sublayer and the second sublayer include any one of a sawtooth structure, a strip structure or an arc structure.

[0013] According to one embodiment of the present invention, the rollable display module further includes a telescopic component, the telescopic component being disposed on the side of the flexible screen away from the light-emitting side, one end of the telescopic component being connected to the first support body, the other end of the telescopic component being connected to the second support body, and the telescopic direction of the telescopic component being perpendicular to the surface of the flexible screen.

[0014] According to one embodiment of the present invention, the rollable display module further includes a telescopic component, the telescopic component being disposed on the side of the flexible screen away from the light-emitting side, one end of the telescopic component being connected to the first support body, the other end of the telescopic component being connected to the second support body, and the telescopic direction of the telescopic component being perpendicular to the surface of the flexible screen.

[0015] According to one embodiment of the present invention, the arrangement density of the cylinders in the bending area corresponding to the flexible screen is less than the arrangement density of the cylinders in the straight area corresponding to the flexible screen.

[0016] According to one embodiment of the present invention, the materials of the first sublayer and the second sublayer include glass, ceramic or metal, and the materials of the first main body and the second main body include flexible materials.

[0017] According to one embodiment of the present invention, in the unfolded state of the rollable display module, the electrical properties on the first sub-layer are different from those on the second sub-layer.

[0018] According to one embodiment of the present invention, the protrusions of the first sub-layer include a plurality of patterned first protrusions, the protrusions of the second sub-layer include a plurality of patterned second protrusions, the groove between adjacent first protrusions includes a first groove, the groove between adjacent second protrusions includes a second groove, and the first protrusion is opposite to the second groove, and the second protrusion is opposite to the first groove.

[0019] According to one embodiment of the present invention, in the unfolded state of the flexible screen, the first sub-layer of the first support and the second sub-layer of the second support are attached to each other, and in the rolled-up state of the flexible screen, the first sub-layer and the second sub-layer are separated from each other.

[0020] According to a second aspect of the present invention, a display device is also provided, the display device including the rollable display module provided in the embodiments of the present application.

[0021] The beneficial effects of this invention are as follows: Compared with the prior art, this application provides a rollable display module and display device. The rollable display module includes a flexible screen, a first support body, and a second support body. The first support body includes a first sub-layer, and the second support body includes a second sub-layer. Both the first and second sub-layers include an array of protrusions, with grooves between adjacent protrusions. When the first and second sub-layers are in contact, the distance decreases, ensuring the support effect of the first and second support bodies on the flexible screen. When the first and second sub-layers are separated, the flexible screen maintains good bending and folding performance. Therefore, the rollable display module and device in this application have both good bending performance and good support effect, ensuring the overall performance of the panel. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments 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 the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the film layer structure of the rollable display module provided in the embodiments of this application;

[0024] Figure 2 This is another structural schematic diagram of the flexible rollable display module provided in the embodiments of this application;

[0025] Figure 3 This is a schematic diagram showing the effect of another state of the rollable display module provided in this embodiment of the application.

[0026] Figure 4 This is another schematic diagram showing the unfolded state of the rollable display module provided in this embodiment. Detailed Implementation

[0027] In the following detailed description, only certain embodiments of the invention are shown and described by way of simple illustration. As will be understood by those skilled in the art, the embodiments described herein can be modified in various ways without departing from the spirit or scope of the invention.

[0028] In the accompanying drawings, the thickness of layers, films, plates, regions, etc., may be exaggerated for clarity, better understanding, and ease of description. It should be understood that when an element such as a layer, film, region, or substrate is referred to as "located on another element," it may be located directly on the other element or there may be inserted elements.

[0029] Furthermore, unless explicitly stated otherwise, the word "including" and its variations such as "comprising" or "containing" will be understood to imply the inclusion of the discussed element, but not necessarily the exclusion of other elements. Further, in the specification, the phrase "on" means placed above or below the object part, and not necessarily on the upper side of the object part based on the direction of gravity.

[0030] It will be understood that although the terms “first,” “second,” etc., may be used in this document to describe various components, these components should not be limited by these terms. These terms are used only to distinguish one component from another.

[0031] As used in this article, the singular forms “one,” “a,” and “the” are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0032] It will also be understood that the terms “comprising” and / or “including” as used herein specify the presence of the said feature or component, but do not exclude the presence or addition of one or more other features or components.

[0033] It will be understood that when a layer, region, or component is referred to as being "formed on" another layer, region, or component, it can be formed directly or indirectly on that other layer, region, or component. For example, intermediate layers, regions, or components may exist.

[0034] In the following examples, the x-axis, y-axis, and z-axis are not limited to the three axes of a Cartesian coordinate system and can be interpreted in a broader sense. For example, the x-axis, y-axis, and z-axis can be perpendicular to each other, or they can represent different directions that are not perpendicular to each other.

[0035] This application provides a rollable display module and display device. By improving the internal structure of the rollable display module and display device, it is effectively ensured that the rollable display module and device have good bending or folding performance, while the flexible screen also has a good supporting effect, thereby effectively improving the overall performance of the panel.

[0036] like Figure 1 As shown, Figure 1 This is a schematic diagram of the film layer structure of the rollable display module provided in this application embodiment. The rollable display module includes a flexible screen 101, a flexible substrate 102, a first support 103, and a second support 104.

[0037] Specifically, when setting the above-mentioned film layer structures, the flexible screen 101 is disposed on the flexible substrate 102. In this embodiment, the material of the flexible substrate 102 can be a flexible resin material, such as a flexible polyimide material or a flexible foam material. The flexible substrate ensures that it has good bending performance while also having a certain bending effect, thereby improving the overall performance of the flexible screen.

[0038] Meanwhile, the first support 103 and the second support 104 are disposed on the same side of the flexible screen 101, such as both being disposed on the back side of the flexible screen. Specifically, the first support 103 is disposed on the side of the flexible substrate 102 away from the flexible screen 101, while the second support 104 is opposite to the first support 103 and disposed on the side of the first support 103 away from the flexible screen 101. Thus, the first support 103 and the second support 104 achieve the support and bending effect for the flexible screen, ensuring that the rollable display module or device has good bending performance as well as good support performance.

[0039] Furthermore, in this embodiment, when the rollable display module and device are bent or folded, there is a gap between the first support 103 and the second support 104, meaning that the first support 103 and the second support 104 do not contact each other. This gap between the two supports improves the bending effect of the flexible screen and the rollable display module, and prevents interference between film layers during bending, thereby ensuring the bending performance of the rollable display module. When the rollable display module or device is in the unfolded state, the gap between the first support 103 and the second support 104 decreases, thereby achieving the purpose of supporting the flexible screen 101 and ensuring the normal operation of the rollable display module.

[0040] like Figure 2 As shown, Figure 2 This is another structural schematic diagram of the flexible rollable display module provided in the embodiments of this application. (Combined with...) Figure 1 In the panel structure of this application embodiment, when the first support 103 and the second support 104 are provided, the first support 103 includes a first sub-layer 1032, and the second support 104 includes a second sub-layer 1042. Furthermore, the first sub-layer 1032 and the second sub-layer 1042 are separable. The first sub-layer 1032 is disposed on one side of the first support 103, and the second sub-layer 1042 is disposed on one side of the second support 104. See details. Figure 2The structure in this application embodiment, when the first sub-layer 1032 and the second sub-layer 1042 are fully bonded or interlocked, the two sub-layers can form a rigid layer 60 with greater stiffness, thereby providing better support for the flexible screen of the rollable display module.

[0041] Furthermore, the first support body includes a first main body 1031 and a first sub-layer 1032, while the second support body 104 also includes a second main body 1041.

[0042] Specifically, the first main body 1031 is disposed on the side close to the flexible substrate 102 and is attached to the flexible substrate 102, thereby achieving a better planar support effect through the first main body 1031. The first sub-layer 1032 is disposed on the side of the first main body 1031 away from the flexible substrate 102. Simultaneously, the first sub-layer 1032 is connected to the first main body 1031, forming the structure of the first support 103 provided in this embodiment.

[0043] Furthermore, when the second support 104 is provided, the second sub-layer 1042 of the second support 104 is provided on the side close to the first sub-layer 1032 of the first support 103. At the same time, the second main body 1041 is provided on the side of the second sub-layer 1042 away from the first sub-layer 1032, and the second main body 1041 is connected to the second sub-layer 1042, forming the structure of the second support 104 provided in the embodiment of this application.

[0044] In this embodiment, multiple first sub-layers 1032 form multiple patterned micro-protrusion structures on one side of the first main body 1031, and multiple second sub-layers 1042 form multiple patterned micro-protrusion structures on one side of the second main body 1041. Thus, both the first and second sub-layers have an array of protrusions, and in the first direction X of the rollable display module, adjacent protrusions have groove structures between them. This allows the protrusions to engage with the grooves on the opposite layer during the bending process of the rollable display module. In this embodiment, the protrusions are configured as rigid protrusions.

[0045] In the following embodiments, the structure of the first sub-layer is illustrated by multiple first protrusions 81, and the structure of the second sub-layer is illustrated by multiple second protrusions 82. Simultaneously, a first groove 771 is provided between two adjacent first protrusions 81, and a second groove 772 is provided between two adjacent second protrusions 82. In this embodiment, the first protrusions 81 and the second protrusions 82 are staggered. Thus, the first protrusions 81 correspond to the second grooves 772, and the second protrusions 82 correspond to the first grooves 771. This achieves the staggered structure and mutual interlocking of the first and second protrusions. When the rollable display module is unfolded or bent and folded, by controlling the relative positional relationship between the first and second protrusions, optionally, when the rollable display module is unfolded, the protrusions on the first sub-layer interlock with the grooves on the second sub-layer, and the grooves on the first sub-layer interlock with the protrusions on the second sub-layer. When the rollable display module is rolled up, the first and second sub-layers separate, thereby increasing the gap between the two sub-layers and facilitating rolling. In this embodiment, by controlling the distance between two different supports, the movement between different protrusions is ensured, and the bending and support effects of the flexible panel are improved. In the following embodiments, the first sub-layer is configured as the first protrusion structure described above, and the second sub-layer is configured as the second protrusion structure described above, so as to better describe the structure of the panel.

[0046] Furthermore, in this embodiment, when setting the structure of the first sub-layer 1032 and the second sub-layer 1042, the structures of the first sub-layer 1032 and the second sub-layer 1042 can be set to the same structure. For example, the patterned structure of the first sub-layer and the second sub-layer can also be set to any one of other shapes such as a serrated structure, a strip structure, or an arc structure. The above-mentioned different structures can correspond to the first protrusion and the second protrusion in this embodiment. When setting the above-mentioned different protrusions, the protrusion and the groove between adjacent protrusions can be set along the first direction X. In this embodiment, the first direction X can be regarded as the horizontal direction corresponding to the fully unfolded rollable display module, and the second direction Y can be regarded as the vertical direction.

[0047] In the configuration, multiple serrated protrusions are correspondingly disposed on one side of the first main body 1031 and the second main body 1041, forming a first protrusion 81 and a second protrusion 82 that are misaligned. In this embodiment, the height of the first sub-layer 1032 can be greater than or equal to the height of the second sub-layer 1042. Since the first sub-layer 1032 is disposed on the side closer to the flexible screen 101, while the second sub-layer 1042 is disposed on the side farther from the flexible screen 101, when the height of the first sub-layer 1032 is greater than or equal to the height of the second sub-layer 1042, when the first sub-layer and the second sub-layer come into contact with each other, more space will be reserved on one side of the first sub-layer 1032. This reserved space makes it easier for the flexible screen 101 to bend or fold, and prevents the first sub-layer and the second sub-layer from interfering with each other when the flexible screen is folded, thereby effectively improving the bending or folding performance of the panel.

[0048] In the following embodiments, the first protrusion 81 and the second protrusion 82 are both set to the same height, and the shape and size of the first groove between two adjacent first sub-layers 1032 and the second groove between two adjacent second sub-layers 1042 are the same. Thus, when the first protrusion 81 and the second protrusion 82 are closed together, the first protrusion can be fully inserted into the second groove, and the second protrusion can be fully inserted into the first groove, thereby forming a tight closed surface between the first support 103 and the second support 104. At this time, the distance between the two sub-layers is 0, effectively ensuring the supporting effect of the two supports on the flexible screen.

[0049] In this embodiment, the distance between the first sub-layer 1032 and the second sub-layer 1042 is adjustable. By controlling the distance between the first and second sub-layers, the bendable display module can be bent or unfolded, effectively ensuring the panel's performance.

[0050] Furthermore, in setting the different supports and corresponding protrusion structures, in the embodiments of this application, the materials of the main body and the corresponding protrusions of each support are set to different materials, and the stiffness of the main body and the corresponding sub-layer of each support is set to different stiffness.

[0051] Specifically, in this embodiment, the first main body 1031 and the first sub-layer 1032 of the first support 103 are made of different materials. Optionally, the first main body 1031 is made of a flexible material, while the first sub-layer 1032 is made of a rigid material. In this way, the first main body 1031 can correspond to the flexible substrate 102 on it, thereby ensuring the contact effect between the two films that are bonded to each other and ensuring the performance of the panel.

[0052] For the second support 104, the second main body 1041 and the second sub-layer 1042 are made of different materials. Optionally, the second main body 1041 is made of a flexible material, and the corresponding second sub-layer 1042 is made of a rigid material. In this way, since the second sub-layer 1042 is offset from the first sub-layer 1032 and fits against the first sub-layer 1032 when closed, by making the first sub-layer and the second sub-layer rigid materials, the contact effect between the two different types of protrusions is ensured, and the normal operation of the panel is guaranteed.

[0053] In this embodiment, the materials of the first sub-layer 1032 and the second sub-layer 1042 can be glass, ceramic, metal, or other rigid materials. Correspondingly, the materials of the first main body 1031 and the second main body 1041 can be flexible materials, such as flexible polyimide, flexible foam, or other flexible resin materials, which will not be elaborated here. Furthermore, the stiffness of the flexible material corresponding to the first main body 1031 is greater than the stiffness of the flexible material corresponding to the second main body 1041. Thus, the second main body 1041 is located on the side away from the flexible screen. When the flexible screen is bent, the second main body 1041 can bend more easily, thereby ensuring the bending effect and performance of the flexible panel.

[0054] Furthermore, in this embodiment, when the first sub-layer and the second sub-layer are configured, the electrical properties of the first sub-layer and the second sub-layer are different when the rollable display module is unfolded. Thus, by controlling the polarity of the electrical properties of the first and second sub-layers, when the module is unfolded, the different electrical properties attract each other, thereby reducing the distance between the first and second sub-layers.

[0055] In this embodiment, both the first sublayer 1032 and the second sublayer 1042 are made of ceramic material, and the corresponding first main body 1031 and second main body 1041 are made of flexible polyimide. Furthermore, the stiffness of the first main body is less than the stiffness of the first sublayer, and the material stiffness of the second main body is less than the stiffness of the second sublayer.

[0056] Furthermore, in this embodiment, the first sub-layer 1032 and the second sub-layer 1042 can also be made of magnetic materials. The first sub-layer 1032 and the second sub-layer 1042 are made of magnetic materials with opposite polarities. Optionally, the material of the first sub-layer 1032 is a positive polarity material, and the material of the second sub-layer 1042 is a negative polarity material. When the flexible screen is unfolded and powered on, the first sub-layer 1032 corresponding to the upper support carries a positive charge, while the second sub-layer 1042 corresponding to the lower support carries a negative charge. In this way, the upper and lower supports attract each other, thereby changing the distance between the two sub-layers, causing the first sub-layer to move relative to the second sub-layer. If the first and second sub-layers approach and adhere, when the two misaligned protrusions of different types approach and form a tight contact surface, the first main body and the second main body can form an effective support surface, thereby ensuring the normal operation of the rollable screen.

[0057] In this embodiment, by setting the different supports and corresponding protrusions or sub-layers to materials with different rigidities, when the rollable display module is rolled up or unfolded, the flexible material can provide a certain buffer for the protrusions and provide a certain support effect. Thus, on the one hand, the flexible rollable display module can have good bending performance, and on the other hand, after the rollable display module is unfolded, the protrusions with higher rigidity can provide sufficient support, thereby ensuring the overall performance of the rollable display module.

[0058] See details Figure 1 as well as Figure 2 In this embodiment of the application, the rollable display module further includes a telescopic component 105. The telescopic component 105 is correspondingly disposed within the first support 103 and the second support 104. Specifically, the telescopic component 105 is disposed on the side of the flexible screen away from the light-emitting side. One end of the telescopic component 105 is connected to the first support 103, and the other end is connected to the second support 104. The telescopic direction of the telescopic component is perpendicular to the surface of the flexible screen, such as along the second direction Y.

[0059] In this embodiment of the application, when the telescopic component 105 is provided, the telescopic component 105 can be configured as a pneumatic mechanism or other telescopic mechanism, such as the telescopic component 105 including a cylinder 1051 and a pressure column 1052. The pressure column 1052 is movably disposed within the cylinder 1051 and can move within the cylinder 1051.

[0060] Specifically, during installation, a first opening 201 and a second opening 202 are respectively provided at corresponding positions of the first support 103 and the second support 104. For example, the first opening 201 and the second opening 202 are located at the same vertical projection position.

[0061] In this embodiment, when the telescopic component 105 is configured, the cylinder 1051 is disposed within the first opening 201, and the pressure column 1052 is disposed within the second opening 202. Specifically, one end of the pressure column 1052 is inserted into the cylinder 1051, and the other end is disposed within the second opening 202. Thus, when one end of the pressure column 1052 moves up and down within the cylinder 1051, the other end can also move up and down within the space of the second opening 202, thereby achieving the reciprocating motion of the telescopic component. In this embodiment, when the cylinder structure within the rollable display module is configured and arranged, the cylinder density within the bending area corresponding to the flexible screen is less than the cylinder density within the straight area corresponding to the flexible screen. This results in fewer cylinders within the bending area when the flexible screen is bent or rolled, making it easier to bend the panel and avoiding interference between different components during the rolling process, thereby effectively improving the rollability of the rollable display module.

[0062] See details Figure 2 In the structure described in this application embodiment, the Figure 2 The first state refers to the situation where the first support 103 and the second support 104 are separated from each other. In this first state, the two different supports are separated, and the rollable display module or display device is a rollable screen, that is, the rollable display module is in a non-working rolled-up state. When it is rolled up, since the first sub-layer 1032 on the first support 103 and the second sub-layer 1042 on the second support are not in contact, and there is a gap between the two different supports, the bending or folding performance of the rollable display module is effectively improved.

[0063] In this embodiment, in the first state, the movement of the two supports can be directly achieved by controlling the movement of the telescopic component 105. Specifically, since the cylinder 1051 is filled with compressed gas, and a sealed structure is formed between the cylinder 1051 and the pressure column 1052, pressure is applied to the cylinder 1051. Under the action of the pressure, the pressure column 1052 will move downward. In this embodiment, the second opening 202 may not completely penetrate the second support, or a support layer may be provided below the second opening 202 to prevent the pressure column 1052 from being exposed from the second opening 202.

[0064] Thus, as the pressure column 1052 moves downward, it drives the second main body 1041 of the second support 104 to move downward, thereby creating a gap between the first support and the second support. When the rollable display module is in the first state corresponding to the scroll effect, the scrolling effect of the rollable display module can be effectively improved.

[0065] like Figure 3 As shown, Figure 3 This is a schematic diagram showing the effect of another state of the rollable display module provided in this embodiment. (Combined with...) Figure 1 as well as Figure 2 In the structure described in this application embodiment, compared to Figure 2 The structure in the middle, Figure 3 The flexible screen of the rollable display module in the figure is a schematic diagram of the effect in the unfolded state. This unfolded state is defined as the second state. The first state and the second state are two opposite states.

[0066] Specifically, in this unfolded state, the first support 103 and the second support 104 are fitted together, and the first support 103 and the second support 104 are tightly fitted together. That is, the first sub-layer 1032 of the first support 103 is inserted into the second groove of two adjacent second sub-layers 1042, and at the same time, the second sub-layer 1042 of the second support 104 is correspondingly inserted into the first groove of two adjacent first sub-layers 1032. In this way, since the first sub-layers and the second sub-layers are set to the same height, after alignment and matching, the first support and the second support can fit tightly together.

[0067] In this embodiment, in the second state, the movement of the first sub-layer and the second sub-layer can be controlled by the aforementioned telescopic component. Specifically, by reducing the gas pressure inside the cylinder 1051, the pressure column 1052 can contract relative to the cylinder 1051, thereby driving the second support 104 to move relative to the first support 103. Thus, during the transition from the first state to the second state, the distance between the first support and the second support gradually decreases, eventually reaching a final fit.

[0068] At this time, since the first sub-layer 1032 and the second sub-layer 1042 are interlocked and form a flat support layer, when the rollable display module is in the unfolded state and working normally, this flat support layer can further support the flexible screen 101 on it and ensure the overall performance of the panel.

[0069] Furthermore, in this embodiment, when the first sub-layer and the second sub-layer are made of magnetic materials with opposite polarities, when the rollable display module is unfolded and put into operation, the first sub-layer will carry a positive charge, while the second sub-layer will carry a negative charge. This causes the first sub-layer 1032 and the second sub-layer 1042 to attract each other. Under the action of attraction, the first support and the second support will move closer to each other, and eventually the first sub-layer and the second sub-layer will be misaligned and matched to form a tight bonding surface, so as to effectively support the flexible screen on it.

[0070] Furthermore, such as Figure 4 As shown, Figure 4This is another schematic diagram showing the unfolded state of the rollable display module provided in this embodiment. To ensure the movement of the telescopic component and effectively avoid interference between different film layers, this embodiment controls the relative positions and distances between different components to improve its performance.

[0071] Specifically, when the gas in the cylinder 1051 of the telescopic component 105 contracts and unfolds the rollable display module, see details... Figure 4 In the process, the total length of the pressure column is set to L1, and when the first sub-layer and the second sub-layer are completely closed and form a tight contact surface, the height of the support layer formed by the first sub-layer 1032 and the second sub-layer 1042 is D, and at the same time, the working length of the pressure column 1052 in the cylinder is L2.

[0072] In this embodiment, when the rollable display module is fully unfolded, the total length L1 of the pressure column is greater than or equal to the sum of the height D of the support layer and the working length L2 of the pressure column 1052. Simultaneously, in this embodiment, the height D of the support layer is less than the total length of the cylinder 1051. This ensures that the first and second supports can fit tightly together, and allows the pressure column 1052 to contract and extend normally within the cylinder 1051, thus guaranteeing the normal unfolding and rotation of the rollable display module and ensuring its normal operation.

[0073] Furthermore, in this embodiment, a display device is also provided, which includes the rollable display module described in this embodiment. The rollable display module can be a rollable screen display module, and it includes a first support body and a second support body, with corresponding protrusions at relative positions on each support body. In this embodiment, by controlling the relative positions and movement relationships between different protrusions, the rollable display module can be made to have both high bending performance and high support effect, thereby effectively improving the overall performance of the rollable display module and the display device.

[0074] In this embodiment, the rollable display module and display device can be any product or component with display or rollable functions, such as a rollable screen mobile phone, computer, electronic paper, or rollable screen display, and there are no specific limitations on their specific types.

[0075] In summary, the rollable display module and display device provided by the embodiments of the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the technical solution and core ideas of the present invention. Although the present invention has been disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. A rollable display module, characterized in that, include: Flexible screen; The first support is located on the back side of the flexible screen; The second support is located on the back side of the flexible screen and is disposed opposite to the first support; A telescopic component is disposed on the side of the flexible screen away from the light-emitting side and distributed in the corresponding bending and straight areas of the flexible screen. One end of the telescopic component is connected to the first support body, and the other end of the telescopic component is connected to the second support body. The first support includes a first sub-layer, and the second support includes a second sub-layer. The first sub-layer and the second sub-layer are detachably disposed. Both the first sub-layer and the second sub-layer include an array of protrusions. At least in the first direction of the rollable display module, there is a groove between adjacent protrusions, and the first sub-layer and the second sub-layer can be fitted with the protrusions of the opposite layer through the grooves. The telescopic component extends in a direction perpendicular to the surface of the flexible screen. When the telescopic component extends, the first support and the second support separate from each other. When the telescopic component shortens, the first support and the second support fit together.

2. The rollable display module according to claim 1, characterized in that, The first support body further includes a first main body portion disposed on the side of the first sub-layer closer to the flexible screen, and the second support body further includes a second main body portion disposed on the side of the second sub-layer away from the flexible screen; Wherein, the stiffness of the first main body is less than the stiffness of the first sub-layer, and the stiffness of the second main body is less than the stiffness of the second sub-layer.

3. The rollable display module according to claim 1, characterized in that, The telescopic component includes a cylinder and a pressure column movably disposed within the cylinder. The cylinder is disposed within an opening in the first support body, one end of the pressure column is disposed within the cylinder, and the other end of the pressure column is disposed within an opening in the second support body.

4. The rollable display module according to claim 3, characterized in that, The density of the cylinders in the bending area corresponding to the flexible screen is less than the density of the cylinders in the straight area corresponding to the flexible screen.

5. The rollable display module according to claim 2, characterized in that, The materials of the first sublayer and the second sublayer include glass, ceramic or metal, and the materials of the first main body and the second main body include flexible materials.

6. The rollable display module according to claim 5, characterized in that, In the unfolded state of the rollable display module, the electrical properties of the first sub-layer are different from those of the second sub-layer.

7. The rollable display module according to claim 1, characterized in that, The first sub-layer has a plurality of patterned first protrusions, the second sub-layer has a plurality of patterned second protrusions, the groove between adjacent first protrusions has a first groove, the groove between adjacent second protrusions has a second groove, and the first protrusion is opposite to the second groove, and the second protrusion is opposite to the first groove.

8. The rollable display module according to claim 1, characterized in that, In the unfolded state of the flexible screen, the first sub-layer of the first support body and the second sub-layer of the second support body are attached to each other; in the rolled-up state of the flexible screen, the first sub-layer and the second sub-layer are separated from each other.

9. A display device, characterized in that, Includes the rollable display module as described in any one of claims 1-8.

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