Display module, manufacturing method thereof and display device

Abstract

The display module comprises a display assembly and a reel, the display assembly comprises a display panel located in a first region, a support layer located on one side of the display panel in a second direction, a connecting portion located in a second region, and a reel located on one side of the connecting portion in the second direction, a buffer layer in the connecting portion is connected to one side of the support layer in a first direction, a normal projection of the support layer on a reference surface is located in a normal projection of the buffer layer on the reference surface, the reference surface is parallel to a surface of the connecting portion in the first direction, at least part of the connecting portion is connected to at least part of the reel, an outer circumferential surface of the reel is provided with a protrusion, when the buffer layer is wound on the reel, one end of the connecting portion in the first direction away from the first region abuts against the protrusion, by arranging the connecting portion in the second region, direct contact between the display panel and the protrusion is avoided during the curling process of the display assembly, and the top damage of the display module in the dynamic curling test is reduced.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display module and its manufacturing method, and a display device. Background Technology

[0002] As AMOLED (Active Matrix Organic Light Emitting Diode) technology matures, its market applications are becoming increasingly diversified, shifting from early applications in mobile phones to medium-sized applications in laptops and automobiles, such as tablets / laptops / rear seats in car infotainment systems; new sizes and forms are becoming increasingly diverse, evolving from the original fixed curved form to inward and outward folding, as well as curling and sliding forms.

[0003] However, when the display module is rolled up, there may be instances where the rolling and bending fail. Summary of the Invention

[0004] In view of this, the purpose of this disclosure is to provide a display module, a method for manufacturing the same, and a display device.

[0005] To achieve the above objectives, this disclosure provides a display module, the display module including a display component and a scroll; the display component includes a first region and a second region located on one side of the first region in a first direction, the display component comprising:

[0006] The display panel is located in the first area;

[0007] A support layer is located in the first region, and the support layer is located on one side of the display panel in a second direction, the first direction intersecting the second direction;

[0008] A connecting portion, located in the second region, includes a buffer layer. In the first direction, the buffer layer is connected to one side of the support layer. The orthographic projection of the support layer on the reference plane is located within the orthographic projection of the buffer layer on the reference plane. The reference plane is parallel to the surface of the connecting portion in the first direction.

[0009] At least a portion of the scroll is located in the second region, the scroll is located on one side of the connecting portion in the second direction, and at least a portion of the connecting portion is connected to at least a portion of the scroll. The outer peripheral surface of the scroll is provided with a protrusion. When the display component is wound on the scroll, the end of the connecting portion away from the first region in the first direction abuts against the protrusion.

[0010] In one embodiment, the outer peripheral surface of the reel includes a first curved surface, a second curved surface, and a connecting surface. One end of the connecting surface is connected to the first curved surface, and the end of the connecting surface away from the first curved surface is connected to the second curved surface. The end of the first curved surface away from the connecting surface is connected to the end of the second curved surface away from the connecting surface.

[0011] Preferably, the first surface includes a first radius of curvature, the second surface includes a second radius of curvature, the first radius of curvature is smaller than the second radius of curvature, or the first radius of curvature is larger than the second radius of curvature.

[0012] In one embodiment, in the first direction, the distance from the side of the buffer layer near the support layer to the side of the buffer layer away from the support layer is a first distance, and the first distance is greater than or equal to a preset threshold.

[0013] Preferably, the preset threshold is the sum of the arc length of the first surface and the arc length of the second surface.

[0014] In one embodiment, in the second direction, the side surface of the buffer layer facing away from the display panel is flush with the side surface of the support layer facing away from the display panel;

[0015] Preferably, the buffer layer includes a first buffer portion and a second buffer portion. In the first direction, the first buffer layer is connected to one side of the support layer, and in the second direction, the second buffer portion is located on the side surface of the first buffer layer closer to the display panel.

[0016] Preferably, in the second direction, the side surface of the first buffer portion facing away from the display panel is flush with the side surface of the support layer facing away from the display panel;

[0017] Preferably, in the second direction, the thickness of the first buffer portion is equal to the thickness of the support layer;

[0018] Preferably, in the second direction, the thickness of the second buffer portion is greater than or equal to the thickness of the display panel;

[0019] Preferably, in the second direction, the thickness of the second buffer portion is equal to the thickness of the display panel;

[0020] Preferably, in the second direction, the thickness of the second buffer portion is between 35 micrometers and 45 micrometers;

[0021] Preferably, the first buffer portion and the support layer are integrally formed.

[0022] In one embodiment, the display assembly further includes a cover plate layer located in the first region, the cover plate layer being located on the side of the display panel facing away from the support layer in the second direction; the connecting portion further includes a first extension portion, the first extension portion being connected to one side of the cover plate layer in the first direction;

[0023] Preferably, in the first direction, the distance from the side of the first extension near the cover layer to the side of the first extension away from the cover layer is the second distance, and the second distance is greater than or equal to the preset threshold.

[0024] Preferably, the second distance is greater than or equal to the first distance.

[0025] In one embodiment, the display component further includes a filter layer located in the first region, the filter layer being located on the side of the display panel facing away from the support layer in the second direction, and on the side of the cover layer close to the display panel in the second direction;

[0026] Preferably, the connecting portion further includes a second extension portion, which is connected to one side of the filter layer in the first direction;

[0027] Preferably, the filter layer and the second extension are integrally formed.

[0028] Preferably, the display component further includes a first adhesive layer located in the first region, the first adhesive layer being located between the display panel and the support layer;

[0029] Preferably, the connecting portion further includes a third extension portion, which is connected to one side of the first adhesive layer in the first direction;

[0030] Preferably, the first adhesive layer and the third extension are integrally formed.

[0031] Preferably, the material of the first adhesive layer includes optical adhesive.

[0032] In one embodiment, the display assembly further includes a back plate located in the first region, the back plate being located on the side of the support layer opposite to the display panel in the second direction, and the connecting portion further includes a fourth extension, which is connected to one side of the back plate in the first direction.

[0033] Preferably, in the second direction, the surface of the fourth extension away from the display panel is flush with the surface of the back plate away from the display panel, and the thickness of the fourth extension is equal to the thickness of the back plate;

[0034] Preferably, the fourth extension and the back plate are integrally formed.

[0035] Preferably, the display component further includes a second adhesive layer located in the first region, the second adhesive layer being located between the back plate and the support layer, and the connecting portion further includes a fifth extension portion, which is connected to one side of the second adhesive layer in a first direction;

[0036] Preferably, in the second direction, the thickness of the fifth extension is equal to the thickness of the second adhesive layer;

[0037] Preferably, the fifth extension and the second adhesive layer are integrally formed.

[0038] Preferably, the back plate is provided with a plurality of perforations, and the perforations are filled with a flexible colloid.

[0039] Based on the same inventive concept, this disclosure provides a method for manufacturing a display module, the display module including a display component and a scroll, the display component including a first region and a second region located on one side of the first region in a first direction, the manufacturing method including the following steps:

[0040] A display panel is provided, the display panel being located in the first region;

[0041] A support layer is formed on one side of the display panel in a second direction; the support layer is located in the first region, and the first direction intersects the second direction;

[0042] A connection portion is formed in the second region; the connection portion includes a buffer layer, which is connected to one side of the support layer in the first direction, and the orthographic projection of the support layer on the reference plane is located within the orthographic projection of the buffer layer on the reference plane, and the reference plane is parallel to the surface of the connection portion in the first direction;

[0043] The connecting part is connected to the spool; the outer peripheral surface of the spool is provided with a protrusion, and when the connecting part is wound on the spool, the end of the connecting part that is away from the first region in the first direction abuts against the protrusion.

[0044] In one embodiment, the step of forming a support layer on one side of the display panel in the second direction includes:

[0045] Form a support layer;

[0046] The support layer is disposed on one side of the display panel in the second direction;

[0047] Preferably, the step of forming the connection portion in the second region includes:

[0048] A buffer layer is formed on one side of the support layer in the first direction;

[0049] Preferably, the step of forming a buffer layer on one side of the support layer in the first direction includes:

[0050] A first buffer portion is formed on one side of the support layer in the first direction;

[0051] In the second direction, a second buffer portion is formed on the side surface of the first buffer portion near the display panel;

[0052] Preferably, the formation of the first buffer portion and the formation of the support layer are carried out in the same process on one side of the support layer in the first direction;

[0053] Preferably, the step of disposing the support layer on one side of the display panel in the second direction includes:

[0054] The support layer and the buffer layer are disposed on one side of the display panel in the second direction;

[0055] Preferably, after the step of forming the second buffer portion on the side surface of the first buffer portion near the display panel, the method further includes:

[0056] A first release protective film and a second release protective film are formed on both sides of the support layer in the second direction, respectively; the first release film covers the surface of the support layer near the second buffer portion in the second direction, and the second release film covers the surfaces of the support layer and the first buffer portion away from the second buffer portion in the second direction;

[0057] A third release protective film is formed on the side surface of the second buffer portion that is opposite to the first buffer portion in the second direction;

[0058] Preferably, the step of disposing the support layer and the buffer layer on one side of the display panel in the second direction further includes:

[0059] Remove the first release protective film, the second release protective film, and the third release protective film;

[0060] Preferably, in the second direction, the thickness of the first release protective film is equal to the sum of the thickness of the second buffer portion and the thickness of the third release protective film.

[0061] Based on the same inventive concept, this disclosure provides a display device, characterized in that it includes a display module as described above, or a display module manufactured by the manufacturing method described above.

[0062] Compared with the prior art, the display module and its manufacturing method and display device provided in this disclosure provide a connecting part in the second region of the display component in the display module. During the rolling process of the display component, a buffer layer of the connecting part is provided between the display panel and the roller, which avoids direct contact between the protrusions on the outer peripheral surface of the display panel and the roller, thereby avoiding damage to the display panel by the protrusions on the outer peripheral surface of the roller and reducing the probability of damage during dynamic rolling test of the display module. Attached Figure Description

[0063] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 Side view of the display module provided in the embodiments of this application Figure 1 ;

[0065] Figure 2 Side view of the display module provided in the embodiments of this application Figure 2 ;

[0066] Figure 3 Side view of the display module provided in the embodiments of this application Figure 3 ;

[0067] Figure 4 This is a side view of a display module portion provided in an embodiment of this application;

[0068] Figure 5a Schematic diagram of the scroll structure provided in the embodiments of this application Figure 1 ;

[0069] Figure 5b Schematic diagram of the scroll structure provided in the embodiments of this application Figure 2 ;

[0070] Figure 6 This is a schematic diagram of the connecting part wound on the reel according to an embodiment of the present application;

[0071] Figure 7 This is a schematic diagram of the manufacturing process of the display module provided in the embodiments of this application;

[0072] Figure 8 This is a schematic diagram of the structure during the fabrication process of the support layer and buffer layer provided in the embodiments of this application. Detailed Implementation

[0073] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0074] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0075] In this document, spatial terms such as “upper” and “lower” are defined with reference to the accompanying drawings. Therefore, it will be understood that “upper” and “lower” are used interchangeably. It will be understood that when a layer is referred to as being “on” another layer, it can be formed directly on that other layer, or there may be intermediate layers. Therefore, it will be understood that when a layer is referred to as being “directly” on another layer, no intermediate layer is inserted in between.

[0076] In the accompanying drawings, the dimensions of layers and regions may be exaggerated for clarity. It is understood that when a layer or element is referred to as "on" another layer or substrate, the layer or element may be directly on said other layer or substrate, or there may be intermediate layers. Furthermore, it is understood that when a layer is referred to as "between two layers," the layer may be the only layer between said two layers, or there may be one or more intermediate layers. Additionally, the same reference numerals always denote the same elements.

[0077] In the following text, although terms such as “first” and “second” may be used to describe various components, these components are not necessarily limited to the terms above. The terms above are used only to distinguish one component from another. It will also be understood that expressions used in the singular form include plural expressions unless the singular form has a distinct meaning in the context. Furthermore, in the embodiments below, it will also be understood that the terms “comprising” and / or “having” as used herein indicate the presence of the stated feature or component, but do not exclude the presence or addition of one or more other features or components.

[0078] In the following embodiments, when a layer, region, or element is “connected,” it can be interpreted as the layer, region, or element being connected not only directly but also through other constituent elements placed therebetween. For example, when a layer, region, element, etc., is described as being connected or electrically connected, the layer, region, element, etc., can not only be directly connected or directly electrically connected, but can also be connected or electrically connected through another layer, region, element, etc., placed therebetween.

[0079] As used in the application documents, the term "and / or" includes any and all combinations of one or more of the related listed items. When a statement such as "at least one of..." follows a list of elements, it modifies the entire list of elements, not individual elements within that list.

[0080] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0081] It should also be understood that the terms “including / comprise” or “have” specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0082] In related technologies, as AMOLED technology gradually matures, its market applications are becoming more and more diversified, shifting from early applications such as mobile phones to medium-sized applications such as laptops and automotive displays, including tablets / laptops / rear seats in car infotainment systems; new size forms are becoming more and more diverse, evolving from the original fixed curved form to inward and outward folding, as well as curling and sliding forms.

[0083] During the roll-up development of the display module, some components are designated as pre-embedded areas. These pre-embedded areas are fixed with high-adhesion adhesive or hinges, while non-pre-embedded areas are rolled up according to the trajectory. The entire module is rolled up and down along the trajectory line. However, the side of the current roll 80 is designed with an irregular circular shape (such as setting a protrusion 84 on the outer circumference of the roll 80). During the rolling process of the display component 200, due to the setting of the protrusion 84, it is easy to damage some film layers of the display component (such as the display panel 10).

[0084] Therefore, this application provides a display module and its manufacturing method, as well as a display device. The display module includes a display component 200 and a scroll 80. The display component 200 includes a first region A1 and a second region A2 located on one side of the first region A1 in a first direction (X direction). The display component 200 also includes a display panel 10, a support layer 20, a connecting portion 100, and the scroll 80. The display panel 10 is located in the first region A1, and the support layer 20 is located in the first region and on one side of the display panel 10 in the second direction (Z direction). The first direction (X direction) and the second direction (Z direction) intersect. The connecting portion 100 is located in the second region A2 and includes a buffer layer 21. In the first direction (X direction), the buffer layer 21 is connected to one side of the support layer 20. The orthographic projection of the support layer 20 on a reference plane is located within the orthographic projection of the buffer layer 21 on the reference plane. The reference plane is parallel to the surface of the connecting portion 100 in the first direction (X direction). At least a portion of the scroll 80 is located in the second region A2. In the second direction (Z direction), the scroll 80 is located on one side of the connecting portion 100 in the second direction (Z direction), and at least a portion of the connecting portion 100 is connected to at least a portion of the scroll 80. A protrusion 84 is provided on the outer peripheral surface of the scroll 80. When the display component 200 is wound on the scroll 80, the end of the connecting portion away from the first region A1 in the first direction (X direction) abuts against the protrusion 84. In this application, by setting a connecting portion 100 in the second region A2, and the orthographic projection of the support layer 20 on the reference plane is located within the orthographic projection of the buffer layer 21 in the connecting portion 100 on the reference plane, this design can utilize at least a portion of the buffer layer 21 to cover at least a portion of the side wall surface of the display panel 10 near the second region. Thus, during the display assembly rolling process, direct contact between the side wall surface of the display panel 10 near the second region and the protrusion 84 on the outer peripheral surface of the scroll 80 can be avoided, thereby preventing the protrusion 84 on the outer peripheral surface of the scroll 80 from damaging the side wall surface of the display panel 10 near the second region and reducing the probability of damage during dynamic rolling test of the display module.

[0085] Next, combine Figures 1-6 The present application describes a display module including a display component 200 and a scroll 80.

[0086] The display component is a flexible display component, and it has an unfolded state and a rolled-up state. The flexible display component includes a first region A1 and a second region A2, wherein the second region A2 is located on one side of the first region A1 in a first direction (X direction). It should be noted that the first region A1 in this application can be understood as the region where the display panel 10 is located; that is, the first region A1 may include the display area and at least a portion of the border area surrounding the display area. The second region A2 can be understood as a pre-embedded area for rolling, and the display panel 10 in the display component is not located in this area. That is, this pre-embedded area is not used for image display; however, when a portion of the film layer in the display component is wound onto the spool 80, the portion of the film layer located in the second region A2 first comes into direct contact with the spool 80 (it can be understood that a portion of the film layer in the second region A2 is first wound onto the spool 80), thus protecting the display panel 10.

[0087] The display module 200 in this embodiment includes a display panel 10, a support layer 20, a back plate 60, a cover plate layer 30, a first adhesive layer 50, a second adhesive layer 70, and a filter layer 40.

[0088] In one embodiment, the display panel 10 may be an organic light-emitting diode (OLED) display panel 10, a quantum dot light-emitting diode (QLED) display panel 10, or a micro-flat panel 10 (Micro-OLED or Micro-LED), etc.

[0089] Furthermore, the display panel 10 is a flexible display panel 10, located in the first region A1 of the display assembly. The display panel 10 is the main component in the flexible display assembly 200 used to realize the display function. When the flexible display assembly 200 is in use, the corresponding image information needs to be transmitted to the display panel 10 and displayed through the display panel 10. Typically, the display panel 10 includes multiple stacked film layer structures. For example, the display panel 10 may include a driving device layer, a light-emitting layer, and an encapsulation layer.

[0090] Furthermore, the display panel 10 includes a light-emitting side and a backlight side that are disposed opposite to each other along its thickness direction (which can be understood as the second direction (Z direction)). The light-emitting side can be used to display images, and the backlight side is the other side of the display panel 10 that is disposed opposite to the light-emitting side.

[0091] refer to Figure 1In one embodiment, the support layer 20 is located in the first region A1, and the support layer 20 is located on one side of the display panel 10 in the second direction (Z direction). Specifically, the support layer 20 is located on the backlight side of the display panel 10. The support layer 20 can provide stable support and protection for the display panel 10. Since the display panel 10 itself is relatively thin and fragile, especially some display panels 10, it is easy to deform, wrinkle or even be damaged without support. The support layer 20 can evenly distribute external forces, preventing the display panel 10 from being damaged by external forces such as squeezing and collision, and ensuring that the display module can maintain good shape and performance in various usage scenarios.

[0092] For example, the support layer 20 is a backing protection film (BPF), and the material of the support layer 20 is a conventional material, which will not be described in detail here.

[0093] refer to Figures 1-3 ,as well as Figure 5a , Figure 5b and Figure 6 In one embodiment, the scroll 80 in the display module is connected to the back plate 60. The scroll 80 can drive the display component 200 to roll around its axis. In the rolled-up state, at least a portion of the display component 200 will roll around the scroll 80, so that at least a portion of the display component 200 can be hidden inside the flexible display module, thereby reducing the overall size of the flexible display component and facilitating carrying and transfer. During the process of the flexible display component 200 changing from the rolled-up state to the unfolded state, a portion of the display component 200 will roll relative to the scroll 80, and a portion of the structure of the display component 200 will be exposed from inside the flexible display module, thereby increasing the size of the displayable image in the flexible display component 200.

[0094] Furthermore, a protrusion 84 is provided on the spool 80. By forming the protrusion 84 on the outer peripheral surface of the spool 80, the friction between the spool 80 and the connecting part 100 can be increased to prevent slippage.

[0095] Specifically, the outer peripheral surface of the scroll 80 includes a first curved surface 81, a second curved surface 82, and a connecting surface 83. The connecting surface 83 connects the first curved surface 81 and the second curved surface 82. One end of the connecting surface 83 is connected to the first curved surface 81, and the end of the connecting surface 83 away from the first curved surface 81 is connected to the second curved surface 82. The end of the first curved surface 81 away from the connecting surface 83 is connected to the end of the second curved surface 82 away from the connecting surface 83. Figure 5aThe first surface 81 has a first radius of curvature R1, and the second surface 82 has a second radius of curvature R2. The first radius of curvature R1 of the first surface 81 is smaller than the second radius of curvature R2 of the second surface 82. Because the first radius of curvature R1 of the first surface 81 is smaller than the second radius of curvature R2 of the second surface 82, a step difference exists between the first surface 81 and the second surface 82 at the connecting surface 83, thus forming a protrusion 84 on the outer circumference of the scroll 80. Alternatively, as... Figure 5b The first radius of curvature R1 of the first surface 81 is greater than the second radius of curvature R2 of the second surface 82. Since the first radius of curvature R1 of the first surface 81 is greater than the second radius of curvature R2 of the second surface 82, there is a step difference between the first surface 81 and the second surface 82 at the connecting surface 83, thus forming a protrusion 84 on the outer peripheral surface of the scroll 80.

[0096] In the process of developing this invention, the inventors discovered that when the display component 200 is directly wound onto the spool 80, the protrusions 84 on the spool 80 are relatively sharp and can easily damage at least part of the film layer in the display component (such as the display panel 10). This significantly affects the reliability (RA) characteristics of the display panel 10 itself, and may even lead to RA failure. The damage caused by the protrusions to the display module specifically includes two parts, such as... Figure 6 As shown, part of it is damage to the side wall surface of the display assembly caused by the protrusion (such as...). Figure 6 The middle arrow G2), the other part is the top of the protrusion that tops the display component (such as...). Figure 6 (Middle arrow G1).

[0097] refer to Figure 1 and Figure 2 To this end, this application provides a connecting portion 100 in the second region A2 of the display component. The scroll 80 is located on one side of the connecting portion 100 in the second direction (Z direction). At least a portion of the connecting portion 100 is connected to at least a portion of the scroll 80. That is, when the display component is rolled up, the connecting portion 100 is first wound around the scroll 80, and the end of the connecting portion 100 away from the first region A1 in the first direction (X direction) abuts against the protrusion 84. Thus, the force exerted by the protrusion 84 on the display component 200 is applied to the connecting portion 100 and not to the display panel 10, thereby protecting the display panel 10 located in the first region A1 and preventing the protrusion 84 from causing damage to the display panel 10.

[0098] Specifically, the connecting portion 100 includes a buffer layer 21. In the first direction (X direction), the buffer layer 21 is connected to one side of the support layer 20. The orthographic projection of the support layer 20 on the reference plane lies within the orthographic projection of the buffer layer 21 on the reference plane. The reference plane is parallel to the surface of the connecting portion 100 in the first direction (X direction). This design causes the buffer layer 21 to protrude towards the display panel 10, allowing at least a portion of the buffer layer 21 to cover at least a portion of the sidewall of the display panel 10 near the second region. This provides protection to the sidewall of the display panel 10 near the second region when the display assembly 200 is rolled up. At least a portion of the roller 80 is located in the second region A2. When the display assembly 200 is rolled up, the connecting portion 100 located in the second region A2 first contacts the roller 80. The end of the connecting portion 100 facing away from the first region A1 in the first direction (X direction) abuts against the protrusion 84. Specifically, this can be understood as the end of the connecting portion 100 facing away from the first region A1 in the first direction (X direction) abutting against the connecting surface 83. When the display component 200 is wound on the spool 80, the protrusion 84 on the spool 80 has a buffer layer 21 with a connecting part 100 between it and the display panel. This design can prevent the side wall surface of the display panel 10 near the second region A2 from directly contacting the protrusion 84 on the outer peripheral surface of the spool 80, thereby preventing the protrusion 84 on the outer peripheral surface of the spool 80 from damaging the display panel 10.

[0099] Specifically, in the first direction (X direction), the buffer layer 21 is disposed on one side of the support layer 20. In the second direction (Z direction), the first direction (X direction) intersects with the second direction (Z direction). The surface of the buffer layer 21 facing away from the display panel 10 is flush with the surface of the support layer 20 facing away from the display panel 10. Since the orthographic projection of the support layer 20 on the reference plane is located within the orthographic projection of the buffer layer 21 on the reference plane, it can be seen that the buffer layer 21 protrudes towards the display panel 10. That is, the thickness d1 of the buffer layer 21 is greater than the thickness d5 of the support layer 20. This design can compensate for the missing part of the display panel 10 in the second region A2. By using at least part of the buffer layer 21 to cover at least part of the side wall of the display panel 10 near the second region, the force of the protrusion 84 can be further absorbed, thereby preventing the protrusion 84 from damaging the side wall of the display panel 10 in the first region near the second region. Meanwhile, compared to making a display panel 10 that is not used for display at the corresponding position in the second region, using at least part of the buffer layer 21 to replace the display panel 10 to fill the second region A2 makes the process of making the buffer layer 21 simpler and the manufacturing cost lower.

[0100] refer to Figures 1-3In one specific embodiment, in the first direction (X direction), the distance from the side of the buffer layer 21 close to the support layer 20 to the side of the buffer layer 21 away from the support layer 20 is a first distance L1. The first distance L1 is greater than or equal to a preset threshold, wherein the preset threshold is the sum of the arc length M1 of the first curved surface 81 and the arc length M2 of the second curved surface 82. That is, it can be understood that the first distance L1 is greater than or equal to the sum of the arc length M1 of the first curved surface 81 and the arc length M2 of the second curved surface 82. In this embodiment, since the first distance L1 is greater than the sum of the arc length M1 of the first curved surface 81 and the arc length M2 of the second curved surface 82, the buffer layer 21 can be wound around the spool 80 at least once. No matter where the protrusion 84 on the spool 80 is located, the buffer layer 21 can cover the top of the protrusion 84, avoiding direct contact between the display component located in the first region A1 and the top of the protrusion 84. The pressure damage to the display component 200 caused by the top of the protrusion 84 mainly acts on the connecting part 100, reducing the top damage to the display component 200 located in the first region A1, thereby avoiding dynamic curling failure caused by two-turn pressure damage.

[0101] In one specific embodiment, the buffer layer 21 includes a first buffer portion 211 and a second buffer portion 212. In the second direction (Z direction), the second buffer portion 212 is located on the side surface of the first buffer layer 21 close to the display panel 10. The side surface of the buffer layer 21 facing away from the display panel 10 is flush with the side surface of the support layer 20 facing away from the display panel 10. Alternatively, it can be understood that in the second direction (Z direction), the side surface of the first buffer portion 211 facing away from the display panel 10 is flush with the side surface of the support layer 20 facing away from the display panel 10.

[0102] Furthermore, in the second direction (Z direction), the thickness of the first buffer part 211 is equal to the thickness d5 of the support layer 20. At the same time, the first buffer part 211 and the support layer 20 are integrally formed, which can be understood as the first buffer part 211 being formed simultaneously during the manufacturing process of the support layer 20.

[0103] Furthermore, in the second direction (Z direction), the thickness d3 of the second buffer portion 212 is greater than or equal to the thickness d2 of the display panel 10. This design can be understood as the second buffer portion 212 fully wrapping the surface of the display panel 10 near the second region A2, which can further absorb the force of the protrusion 84, thereby preventing the protrusion 84 from damaging the side wall of the display panel 10 near the second region located in the first region, and reducing damage during dynamic curling tests.

[0104] For example, in the second direction (Z direction), the thickness of the second buffer portion 212 is between 35 and 45 micrometers (μm) (e.g., 35μm, 36μm, 37μm, 38μm, 39μm, 40μm, 41μm, 42μm, 43μm, 44μm).

[0105] refer to Figure 2 and Figure 3 In one embodiment, the display assembly 200 further includes a cover layer 30 located in the first region A1. The cover layer 30 is located on the side of the display panel 10 facing away from the support layer 20 in the second direction (Z direction). The cover layer 30 is a flexible cover layer 30. Since the flexible cover layer 30 is located on the side of the display panel 10 facing away from the support layer 20 in the second direction (Z direction), it can be understood that the cover layer 30 is located on the light-emitting side of the display panel 10. In this embodiment, the light-emitting side of the display panel 10 is protected by providing the cover layer 30.

[0106] The connecting portion 100 also includes a first extension 31, which is connected to one side of the cover layer 30 in the first direction (X direction). In this embodiment, the cover layer 30 and the first extension 31 can cover the display panel 10 and the buffer layer 21. At the same time, when the display components are rolled up, the first extension 31 in the connecting portion will be wound onto the reel 80 first, compared to the cover layer.

[0107] Furthermore, in the first direction (X direction), the distance from the side of the first extension 31 near the cover layer 30 to the side of the first extension 31 away from the cover layer 30 is the second distance L2. The second distance L2 is greater than or equal to the first distance L1. This design allows the edge of the first extension 31 to cover and protect the buffer layer 21, while also contributing to the aesthetics of the entire display module.

[0108] Furthermore, the second distance L2 is greater than the first distance L1, and this design ensures that the edge of the first extension 31 fully covers and protects the buffer layer 21.

[0109] When the second distance L2 is greater than or equal to the first distance L1, and the first distance L1 is greater than or equal to a preset threshold, then the second distance L2 is greater than or equal to the preset threshold, that is, the second distance L2 is greater than or equal to the sum of the arc length M1 of the first surface 81 and the arc length M2 of the second surface 82. When the second distance L2 is greater than the first distance L1, and the first distance L1 is greater than or equal to the preset threshold, then the second distance L2 is greater than the preset threshold, that is, the second distance L2 is greater than the sum of the arc length M1 of the first surface 81 and the arc length M2 of the second surface 82.

[0110] Furthermore, in the second direction (Z direction), the surface of the first extension 31 facing away from the display panel 10 is flush with the surface of the cover layer 30 facing away from the display panel 10, and the thickness of the first extension 31 is equal to the thickness of the cover layer 30. At the same time, the first extension 31 and the cover layer 30 are integrally formed, which can be understood as the first extension 31 being formed simultaneously during the manufacturing process of the cover layer 30.

[0111] For example, the cover layer 30 can be a transparent protective layer located on the display side of the flexible display panel, and can also have good optical performance and anti-fingerprint and anti-fouling capabilities, and can be made of, but not limited to, plastic, glass or composite materials.

[0112] refer to Figure 2 and Figure 3 In one embodiment, the display assembly 200 further includes a filter layer 40 located in the first region A1. The filter layer 40 is located on the side of the display panel 10 facing away from the support layer 20 in the second direction (Z direction) and on the side of the cover layer 30 close to the display panel 10 in the second direction (Z direction). That is, the filter layer 40 can be understood as being located between the display panel 10 and the cover layer 30. The filter layer 40 filters light, reduces reflected light from the outside, thereby preventing ambient light from affecting the display light emitted by the display panel 10 and improving the image quality of the display screen.

[0113] refer to Figure 3 Furthermore, the connecting portion 100 also includes a second extension portion 41. In one direction (X direction), the second extension portion 41 is connected to one side of the filter layer 40. The second extension portion 41 is provided on one side of the filter layer 40 in the first direction (X direction). This design can further reduce the gap between the buffer layer 21 and the first extension portion 31.

[0114] In this embodiment, in the second direction (Z direction), the surface of the second extension 41 near the display panel 10 is flush with the surface of the filter layer 40 near the display panel 10, and the thickness of the second extension 41 is equal to the thickness of the filter layer 40. Meanwhile, the first extension 31 and the cover layer 30 are integrally formed, which can be understood as the second extension 41 being formed simultaneously during the fabrication of the filter layer 40.

[0115] For example, the filter layer 40 in this embodiment includes either a color filter on encapsulation (COE) or a polarizer (POL).

[0116] refer to Figure 2 and Figure 3In one embodiment, the display assembly further includes a first adhesive layer 50 located in the first region A1. The first adhesive layer 50 is located on the side of the filter layer 40 facing away from the display panel 10 in the second direction (Z direction) and on the side of the cover layer 30 close to the display panel 10 in the second direction (Z direction). It can be understood that the first adhesive layer 50 is located between the filter layer 40 and the cover layer 30 and is used to bond the filter layer 40 and the cover layer 30.

[0117] refer to Figure 3 Furthermore, the connecting portion 100 also includes a third extension 51, which is connected to one side of the first adhesive layer 50 in the first direction (X direction). This design can further reduce the gap between the second extension 41 and the first extension 31, while also achieving adhesion between the second extension 41 and the first extension 31.

[0118] In this embodiment, in the second direction (Z direction), the surface of the third extension 51 near the display panel 10 is flush with the surface of the first adhesive layer 50 near the display panel 10, and the thickness of the third extension 51 is equal to the thickness of the first adhesive layer 50. At the same time, the third extension 51 and the first adhesive layer 50 are integrally formed, which can be understood as the third extension 51 being formed simultaneously during the process of making the first adhesive layer 50.

[0119] For example, the material of the first adhesive layer 50 in this embodiment includes optical adhesive (OCA).

[0120] It should be noted that when the second region A2 in the display component is provided with a first extension 31, a second extension 41 and a third extension 51, in the second direction (Z direction), the thickness d3 of the second buffer 212 is equal to the thickness d2 of the display panel 10.

[0121] refer to Figure 2 and Figure 3 In one embodiment, the display assembly further includes a backlight transmission layer (BKT) 60 located in the first region A1. The backlight transmission layer 60 is located on the side of the support layer 20 facing away from the display panel 10 in the second direction (Z direction). The backlight transmission layer 60 can refer to a structural component that provides the necessary support and shape for the display panel 10 and supports the entire flexible display assembly.

[0122] The connecting portion 100 also includes a fourth extension 61, which is connected to one side of the back plate 60 in the first direction (X direction). In this embodiment, the back plate 60 and the fourth extension 61 can cover the support layer 20 and the buffer layer 21. At the same time, when the display component is wound up, the fourth extension 61 located in the second region A2 will first be wound onto the reel 80.

[0123] In this embodiment, in the second direction (Z direction), the surface of the fourth extension 61 facing away from the display panel 10 is flush with the surface of the back plate 60 facing away from the display panel 10, and the thickness of the fourth extension 61 is equal to the thickness of the back plate 60. At the same time, the fourth extension 61 and the back plate 60 are integrally formed, which can be understood as the fourth extension 61 being formed simultaneously during the manufacturing process of the back plate 60.

[0124] For example, in this embodiment, the backplate 60 can be made of metal, such as stainless steel (SUS), titanium alloy, etc.; the support layer can also be a composite fiberboard, such as carbon fiber composite board, but is not limited thereto. Composite fiberboard has the characteristics of high strength, high modulus, good heat dissipation, and light weight, which is beneficial to the thinning and lightening of the display module and heat dissipation.

[0125] Furthermore, the display assembly also includes a second adhesive layer 70 located in the first region A1. The second adhesive layer 70 is located between the back plate 60 and the support layer 20 and is used to bond the back plate 60 and the support layer 20.

[0126] Furthermore, the connecting portion 100 also includes a fifth extension portion 71, which is connected to one side of the second adhesive layer 70 in the first direction (X direction). This design facilitates the bonding between the buffer layer 21 and the fourth extension portion 61.

[0127] For example, the second adhesive layer 70 includes double-sided adhesive.

[0128] Furthermore, the back plate is provided with multiple perforated holes 62. By providing perforated holes 62, the rigidity of the back plate 60 can be reduced, which is beneficial for the curling and bending of the back plate. The perforated holes 62 of the back plate are filled with flexible colloid 63. This design can reduce the torsional deformation resistance of the back plate 60 in the curling and bending state, and avoid the phenomenon of curling and bulging of the back plate 60 due to deformation after multiple curling.

[0129] It should be noted that in this application, the distance from the side of the connecting part closer to the first region in the first direction to the side away from the first region in the first direction is greater than or equal to a preset threshold, that is, the distance from the side of the connecting part closer to the first region in the first direction to the side away from the first region in the first direction is greater than or equal to the sum of the arc length M1 of the first curved surface 81 and the arc length M2 of the second curved surface 82.

[0130] refer to Figures 1-3 In one embodiment, the back plate 60 and the roll 80 are connected by a third adhesive layer 90.

[0131] In summary, by providing a connecting portion 100 in the second region A2 of the display component in this embodiment, during the curling process of the display component 200, the connecting portion 100 will first be curled onto the spool, so that the force exerted by the protrusion 84 on the display component 200 is applied to the connecting portion 100 and not to the display panel 10, thus protecting the display panel 10 located in the first region A1 and preventing the protrusion 84 from causing damage to the display panel 10. On the one hand, in this embodiment, at least a portion of the buffer layer 21 is used to cover at least a portion of the side wall of the display panel 10 near the second region A2, which can further absorb the force of the protrusion 84, thereby preventing the protrusion 84 from damaging the side wall of the display panel 10 near the second region located in the first region, and reducing the probability of damage during dynamic curling test of the display component. On the other hand, by using at least a portion of the buffer layer 21 to cover the top of the protrusion, the pressure damage to the display component 200 from the top of the protrusion mainly acts on the connecting part, reducing the pressure damage of the protrusion 84 on the surface of the display panel 10 located in the first region A1 in the second direction (Z direction), thereby avoiding dynamic curling failure caused by two-ring pressure damage.

[0132] refer to Figure 7 and Figure 8 Based on the same inventive concept, this disclosure provides a method for manufacturing a display module, wherein the display module includes a display component 200 and a scroll, the display component 200 includes a first region A1 and a second region A2 located on one side of the first region A1 in a first direction (X direction), and the manufacturing method includes the following steps:

[0133] S10: Provide a display panel 10, which is located in the first region A1;

[0134] S20: A support layer 20 is formed on one side of the display panel 10 in the second direction (Z direction); the support layer 20 is located in the first region A1, where the first direction (X direction) intersects with the second direction (Z direction);

[0135] S30: A connecting portion 100 is formed in the second region A2; the connecting portion 100 includes a buffer layer 21, which is connected to one side of the support layer 20 in the first direction (X direction). The orthographic projection of the support layer 20 on the reference plane is located within the orthographic projection of the buffer layer 21 on the reference plane. The reference plane is parallel to the surface of the connecting portion 100 in the first direction (X direction).

[0136] S40: Connect the connecting part 100 to the scroll 80. The outer peripheral surface of the scroll 80 is provided with a protrusion 84. When the connecting part 100 is wound on the scroll 80, the end of the connecting part 100 that is away from the first region A1 in the first direction (X direction) abuts against the protrusion 84.

[0137] In the above manufacturing method, by setting a connecting part in the second region A2, and the orthographic projection of the support layer 20 on the reference surface is located within the orthographic projection of the buffer layer 21 in the connecting part 100 on the reference surface, this design can use at least part of the buffer layer 21 to cover at least part of the side wall surface of the display panel 10 near the second region. Thus, during the rolling process of the display assembly 200, the side wall surface of the display panel 10 near the second region can be prevented from directly contacting the protrusion 84 on the outer peripheral surface of the roller 80. At least part of the buffer layer 21 can further absorb the force of the protrusion 84, thereby preventing the protrusion 84 on the outer peripheral surface of the roller 80 from damaging the side wall surface of the display panel 10 near the second region, and reducing the probability of damage during the dynamic rolling test of the display module.

[0138] In one specific embodiment, the step of forming a support layer on one side of the display panel 10 in the second direction (Z direction) includes:

[0139] Form a support layer 20;

[0140] The support layer 20 is disposed on one side of the display panel 10 in the second direction (Z direction).

[0141] In one specific embodiment, the step of forming the connecting portion 100 in the second region A2 includes:

[0142] A buffer layer 21 is formed on one side of the support layer 20 in the first direction (X direction);

[0143] In one specific embodiment, the step of forming a buffer layer 21 on one side of the support layer 20 in a first direction (X direction) includes:

[0144] A first buffer portion 211 is formed on one side of the support layer 20 in the first direction (X direction);

[0145] In the second direction (Z direction), a second buffer portion 212 is formed on the side surface of the first buffer portion 211 near the display panel 10.

[0146] Furthermore, the formation of a first buffer portion 211 on one side of the support layer 20 in the first direction (X direction) and the formation of the support layer 20 are in the same process; that is, the first buffer portion 211 and the support layer 20 are formed synchronously in the same process, which can also be understood as the first buffer and the support layer 20 being an integral structure.

[0147] In one specific embodiment, after the step of forming the second buffer portion 212 on the surface of the first buffer portion 211 near the display panel 10, the method further includes:

[0148] A first release protective film 23 and a second release protective film 22 are formed on both sides of the support layer 20 in the second direction (Z direction), wherein the first release film covers the surface of the support layer 20 close to the second buffer portion 212 in the second direction (Z direction), and the second release film covers the surfaces of the support layer 20 and the first buffer portion 211 away from the second buffer portion 212 in the second direction (Z direction).

[0149] A third release protective film 24 is formed on the side surface of the second buffer portion 212 opposite to the first buffer portion 211. Since there is a height difference between the support layer and the second buffer portion, in order to avoid incomplete application of the release film and warping during the application process, the first release film on the support layer and the third release film on the second buffer portion are applied in two separate steps in this embodiment.

[0150] Furthermore, the third release film 24 needs to have reduced or no impedance, and a release film with minimal color difference should be selected as much as possible.

[0151] It should be noted that the release protective film used in this method is PET release film.

[0152] In one specific embodiment, the step of disposing the support layer 20 on one side of the display panel 10 in the second direction (Z direction) includes:

[0153] The support layer and buffer layer are disposed on one side of the display panel in the second direction (Z direction);

[0154] In one specific embodiment, the step of disposing the support layer and the buffer layer on one side of the display panel in the second direction (Z direction) further includes:

[0155] Remove the first release protective film 23, the second release protective film 22 and the third release protective film 24.

[0156] In one specific embodiment, in the second direction (Z direction), the thickness d4 of the first release protective film 23 is equal to the sum of the thickness d3 of the second buffer portion 212 and the thickness d6 of the third release protective film 24. This design ensures that the surface of the first release film and the third release film away from the support layer is flat, improving rigidity and resisting deformation during secondary processing. It can reduce warping abnormalities caused by secondary processing, such as avoiding additional warping caused by stress release during handling or secondary processing (such as cutting and attaching), thereby avoiding interference of incoming material warping with module bonding.

[0157] Based on the same inventive concept, this disclosure also provides a display device, which includes the display module described in any of the above embodiments; the display module has been described in detail in the above embodiments and will not be repeated here.

[0158] In specific applications, the display device can be at least one of the following devices with display functions: smartphone, tablet computer, mobile phone, video phone, e-book reader, desktop computer, laptop computer, netbook, workstation, server, personal digital assistant, portable media player, MP3 player, mobile medical device, camera, game console, digital camera, car navigation system, electronic billboard, ATM, or wearable device.

[0159] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0160] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0161] This disclosure is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A display module, characterized in that, The display module includes a display component and a scroll; the display component includes a first region and a second region located on one side of the first region in a first direction; the display component includes: The display panel is located in the first area; A support layer is located in the first region, and the support layer is located on one side of the display panel in a second direction, the first direction intersecting the second direction; A connecting portion, located in the second region, includes a buffer layer. In the first direction, the buffer layer is connected to one side of the support layer. The orthographic projection of the support layer on the reference plane is located within the orthographic projection of the buffer layer on the reference plane. The reference plane is parallel to the surface of the connecting portion in the first direction. The buffer layer includes a first buffer portion and a second buffer portion. In the first direction, the first buffer portion is connected to one side of the support layer. In the second direction, the second buffer portion is located on the side surface of the first buffer layer closer to the display panel. In the second direction, the thickness of the second buffer portion is greater than or equal to the thickness of the display panel. At least a portion of the scroll is located in the second region, the scroll is located on one side of the connecting portion in the second direction, and at least a portion of the connecting portion is connected to at least a portion of the scroll. The outer peripheral surface of the scroll is provided with a protrusion. When the display component is wound on the scroll, the end of the connecting portion away from the first region in the first direction abuts against the protrusion.

2. The display module as described in claim 1, characterized in that, The outer peripheral surface of the scroll includes a first curved surface, a second curved surface, and a connecting surface. One end of the connecting surface is connected to the first curved surface, the end of the connecting surface away from the first curved surface is connected to the second curved surface, and the end of the first curved surface away from the connecting surface is connected to the end of the second curved surface away from the connecting surface.

3. The display module as described in claim 2, characterized in that, The first surface includes a first radius of curvature, and the second surface includes a second radius of curvature. The first radius of curvature is smaller than the second radius of curvature, or the first radius of curvature is larger than the second radius of curvature.

4. The display module as described in claim 2, characterized in that, In the first direction, the distance from the side of the buffer layer near the support layer to the side of the buffer layer away from the support layer is a first distance, and the first distance is greater than or equal to a preset threshold.

5. The display module as described in claim 4, characterized in that, The preset threshold is the sum of the arc length of the first surface and the arc length of the second surface.

6. The display module as described in claim 1, characterized in that, In the second direction, the side surface of the buffer layer facing away from the display panel is flush with the side surface of the support layer facing away from the display panel.

7. The display module as described in claim 6, characterized in that, In the second direction, the side surface of the first buffer portion facing away from the display panel is flush with the side surface of the support layer facing away from the display panel; in the second direction, the thickness of the first buffer portion is equal to the thickness of the support layer.

8. The display module as described in claim 1, characterized in that, In the second direction, the thickness of the second buffer portion is between 35 micrometers and 45 micrometers.

9. The display module as described in claim 1, characterized in that, The first buffer section and the support layer are integrally formed.

10. The display module as described in claim 4, characterized in that, The display assembly further includes a cover plate layer located in the first region, the cover plate layer being located on the side of the display panel facing away from the support layer in the second direction; the connecting portion further includes a first extension portion, the first extension portion being connected to one side of the cover plate layer in the first direction; In the first direction, the distance from the side of the first extension near the cover layer to the side of the first extension away from the cover layer is the second distance, and the second distance is greater than or equal to the preset threshold. The second distance is greater than or equal to the first distance.

11. The display module as described in claim 10, characterized in that, The display component further includes a filter layer located in the first region, the filter layer being located on the side of the display panel facing away from the support layer in the second direction, and on the side of the cover layer close to the display panel in the second direction.

12. The display module as described in claim 11, characterized in that, The connecting portion further includes a second extension portion, which is connected to one side of the filter layer in the first direction; The filter layer and the second extension are integrally formed.

13. The display module as described in claim 11, characterized in that, The display component further includes a first adhesive layer located in the first region, the first adhesive layer being located between the display panel and the support layer; The connecting portion further includes a third extension portion, which is connected to one side of the first adhesive layer in the first direction.

14. The display module as described in claim 13, characterized in that, The first adhesive layer and the third extension are integrally formed. The material of the first adhesive layer includes optical adhesive.

15. The display module as described in claim 1, characterized in that, The display assembly further includes a back plate located in the first region, the back plate being located on the side of the support layer opposite to the display panel in the second direction, and the connecting portion further includes a fourth extension, which is connected to one side of the back plate in the first direction. In the second direction, the surface of the fourth extension away from the display panel is flush with the surface of the back plate away from the display panel, and the thickness of the fourth extension is equal to the thickness of the back plate.

16. The display module as described in claim 15, characterized in that, The fourth extension and the back plate are integrally formed.

17. The display module as described in claim 15, characterized in that, The display component further includes a second adhesive layer located in the first region, the second adhesive layer being located between the back plate and the support layer, and the connecting portion further includes a fifth extension portion, which is connected to one side of the second adhesive layer in a first direction; In the second direction, the thickness of the fifth extension is equal to the thickness of the second adhesive layer.

18. The display module as described in claim 17, characterized in that, The fifth extension and the second adhesive layer are integrally molded structures; The back plate has multiple perforations, which are filled with a flexible colloid.

19. A method for manufacturing a display module, the display module comprising a display component and a scroll, the display component comprising a first region and a second region located on one side of the first region in a first direction, characterized in that, Includes the following steps: A display panel is provided, the display panel being located in the first region; A support layer is formed on one side of the display panel in a second direction; the support layer is located in the first region, and the first direction intersects the second direction; A connection portion is formed in the second region; the connection portion includes a buffer layer, and the step of forming the buffer layer on one side of the support layer in the first direction includes: A first buffer portion is formed on one side of the support layer in the first direction; In the second direction, a second buffer portion is formed on the side surface of the first buffer portion near the display panel. In the first direction, the buffer layer is connected to one side of the support layer. The orthographic projection of the support layer on the reference plane is located within the orthographic projection of the buffer layer on the reference plane. The reference plane is parallel to the surface of the connecting portion in the first direction. The connecting part is connected to the spool; the outer peripheral surface of the spool is provided with a protrusion, and when the connecting part is wound on the spool, the end of the connecting part that is away from the first region in the first direction abuts against the protrusion.

20. The manufacturing method as described in claim 19, characterized in that, The step of forming a support layer on one side of the display panel in the second direction includes: Form a support layer; The support layer is disposed on one side of the display panel in the second direction; The formation of a first buffer portion on one side of the support layer in the first direction and the formation of the support layer are carried out in the same process.

21. The manufacturing method as described in claim 20, characterized in that, The step of disposing the support layer on one side of the display panel in the second direction includes: The support layer and the buffer layer are disposed on one side of the display panel in the second direction; After the step of forming the second buffer portion on the surface of the first buffer portion near the display panel, the method further includes: A first release protective film and a second release protective film are formed on both sides of the support layer in the second direction, respectively; the first release protective film covers the surface of the support layer near the second buffer portion in the second direction, and the second release protective film covers the surfaces of the support layer and the first buffer portion away from the second buffer portion in the second direction; A third release protective film is formed on the side surface of the second buffer portion facing away from the first buffer portion in the second direction.

22. The manufacturing method as described in claim 21, characterized in that, Prior to the step of disposing the support layer and the buffer layer on one side of the display panel in the second direction, the method further includes: Remove the first release protective film, the second release protective film, and the third release protective film; In the second direction, the thickness of the first release protective film is equal to the sum of the thickness of the second buffer portion and the thickness of the third release protective film.

23. A display device, characterized in that, This includes the display module as described in any one of claims 1-18, or the display module manufactured by the manufacturing method as described in any one of claims 19-22.

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