Display module and its manufacturing method, display device

Abstract

The present application discloses a display module and a preparation method thereof, and a display device. The display module includes a display panel and a first cover plate located on one side of the display panel. The first cover plate is set to be retracted relative to the edge of the display panel to prevent the first cover plate from being cut when the edge of the display module is cut, thereby preventing the edge portion of the first cover plate from being cracked. At the same time, a protective layer is provided on at least part of the side of the first cover plate, and the protective layer has elasticity. The protective layer is used to protect the edge portion of the first cover plate. When impacted, the edge portion is not prone to cracking due to the buffering effect of the protective layer, thereby reducing the fragility of the first cover plate and improving the reliability of the display module.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a preparation method thereof, and a display device. Background Art

[0002] Foldable display modules have attracted much attention due to their advantages such as lightness, high contrast, wide viewing angle, fast response speed and flexibility. However, in existing foldable display modules, the edge of the cover plate is prone to cracks or even breakage, thus affecting the reliability of the display module. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application provide a display mask and a preparation method thereof, and a display device to protect the edge portion of the cover plate from cracks, reduce the fragility of the cover plate, and improve the reliability of the display module.

[0004] To achieve the above objectives, the present application provides the following technical solutions:

[0005] A display module comprises a display panel and a first cover plate located at one side of the display panel, wherein an edge of an orthographic projection of the first cover plate on a first plane is located inside an edge of an orthographic projection of the display panel on the first plane, and the first plane is a plane where the display module is located;

[0006] The display module also includes a protective layer which is arranged in contact with at least a portion of the side edge of the first cover plate, and the protective layer is elastic.

[0007] A method for preparing a display module, comprising:

[0008] Providing a display panel, the display panel comprising a surface to be bonded;

[0009] Providing a first cover plate, laminating the first cover plate to one side of the to-be-laminated surface of the display panel, and an edge of the orthographic projection of the first cover plate on a first plane is located inside an edge of the orthographic projection of the display panel on the first plane, and the first plane is the plane where the display module is located;

[0010] A protective layer is disposed on at least part of the side edge of the first cover plate, and the protective layer is elastic.

[0011] A display device comprises the above-mentioned display module.

[0012] Compared with the prior art, the above technical solution has the following advantages:

[0013] The display module provided in the embodiment of the present application includes a display panel and a first cover plate located on one side of the display panel. The edge of the orthographic projection of the first cover plate on the plane where the display module is located is arranged to be located on the inner side of the edge of the orthographic projection of the display panel on the plane where the display module is located, that is, the first cover plate is arranged to be retracted relative to the edge of the display panel, thereby preventing the first cover plate from being cut when the edge of the display module is cut, thereby preventing the edge portion of the first cover plate from being cracked. At the same time, a protective layer is provided on at least part of the side edge of the first cover plate, and the protective layer has elasticity, so that the edge portion of the first cover plate is protected by the protective layer, and when impacted, cracks are not easily generated due to the buffering effect of the protective layer, thereby reducing the fragility of the first cover plate and improving the reliability of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 A schematic diagram of a partial structure of a display module provided in an embodiment of the present application;

[0016] Figure 2 Another partial structural schematic diagram of a display module provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0018] Figure 4 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0020] Figure 6 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0021] Figure 7 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0022] Figure 8 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0023] Fig. 9A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0024] Fig.10 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0025] Fig.11 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0026] Fig.12 A partial structural schematic diagram of an existing display module that does not use an ultra-thin glass UTG cover plate;

[0027] Fig.13 A schematic diagram of another partial structure of a display module provided in an embodiment of the present application;

[0028] Fig.14 A schematic diagram of a process for preparing a display module provided in an embodiment of the present application;

[0029] Fig.15 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0032] Secondly, the present application is described in detail with reference to the schematic diagram. When describing the embodiments of the present application in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present application. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0033] As described in the background technology section, in existing foldable display modules, the edge of the cover plate is prone to cracks or even breakage, thereby affecting the reliability of the display module.

[0034] In view of this, an embodiment of the present application provides a display module. Figure 1 A partial structural diagram of a display module provided in an embodiment of the present application is shown. Figure 1 As shown, the display module 100 includes a display panel 10 and a first cover plate 20 located on one side of the display panel 10, the edge of the orthographic projection of the first cover plate 20 on the first plane is located inside the edge of the orthographic projection of the display panel 10 on the first plane, and the first plane is the plane where the display module is located;

[0035] The display module further includes a protection layer 30 which is disposed in contact with at least a portion of the side edge of the first cover plate 20 , and the protection layer 30 is elastic.

[0036] The inventors have found that one reason why cracks are easily generated at the edge of the cover plate in the display module is that the cover plate is easily cut when the edge of the display module is cut to remove the excess portion.

[0037] Therefore, in the display module provided in the embodiment of the present application, the edge of the orthographic projection of the first cover plate 20 on the first plane is arranged to be located inside the edge of the orthographic projection of the display panel 10 on the first plane, that is, the orthographic projection of the first cover plate 20 on the first plane is arranged to be located inside the orthographic projection of the display panel 10 on the first plane, and the edge of the orthographic projection of the first cover plate 20 on the first plane is at a certain distance from the edge of the orthographic projection of the display panel 10 on the first plane, that is, the first cover plate 20 is arranged to be retracted relative to the edge of the display panel 10. Since the orthographic projection of the first cover plate 20 on the first plane is located inside the orthographic projection of the display panel 10 on the first plane, and the edge of the orthographic projection of the first cover plate 20 on the first plane is at a certain distance from the edge of the orthographic projection of the display panel 10 on the first plane, the first cover plate 20 will not be cut when the edge of the display module is cut, thereby preventing cracks from being generated in the edge portion of the first cover plate 20 due to cutting the edge of the display module.

[0038] The inventors have also found that another reason why the edge of the cover plate in the display module is prone to cracks is: external impact, that is, the edge of the cover plate is prone to cracks under the action of external impact.

[0039] Therefore, in the display module provided in the embodiment of the present application, a protective layer 30 is provided on at least part of the side of the first cover plate 20, and the protective layer is elastic, so that the edge of the first cover plate 20 is protected by the protective layer 30 and is not prone to cracks when impacted due to the buffering effect of the protective layer 30.

[0040] It can be seen that the display module 100 provided in the embodiment of the present application, by setting the edge of the orthographic projection of the first cover plate 20 on the first plane to be located on the inner side of the edge of the orthographic projection of the display panel 10 on the first plane, prevents the edge portion of the first cover plate 20 from being cut and cracked during the preparation of the display module. At the same time, by laminating the protective layer 30 on at least part of the side of the first cover plate 20, and the protective layer 30 is elastic, the edge portion of the first cover plate 20 is not easily cracked due to external impact during the use of the display module, thereby reducing the fragility of the first cover plate 20 and improving the reliability of the display module.

[0041] For example, the protective layer 30 may be a transparent protective layer. The protective layer 30 disposed on at least part of the side of the first cover plate 20 is transparent, so as not to affect the frame design of the display module, and is also conducive to realizing a narrow frame large screen display of the display module.

[0042] It should be noted that Figure 1 The middle dotted line represents the edge of the display module 100. In the embodiment of the present application, the edge of the orthographic projection of the protection layer 30 on the first plane can be located inside the edge of the orthographic projection of the display panel 10 on the first plane, that is, the orthographic projection of the protection layer 30 on the first plane is located within the orthographic projection of the display panel 10 on the first plane, and there is a certain distance between the edge of the orthographic projection of the protection layer 30 on the first plane and the edge of the orthographic projection of the display panel 10 on the first plane, but the present application is not limited to this. In other embodiments of the present application, such as Figure 2 As shown, the edge of the orthographic projection of the protection layer 30 on the first plane may also coincide with the edge of the orthographic projection of the display panel 10 on the first plane, depending on the specific situation.

[0043] It should also be noted that, in the embodiment of the present application, the protective layer 30 is laminated on at least part of the side of the first cover plate 20. Optionally, in one embodiment of the present application, the protective layer 30 may be laminated on the side of the first cover plate 20 that is susceptible to impact. Optionally, in another embodiment of the present application, the protective layer 30 may be disposed around the periphery of the first cover plate 20, that is, the protective layer 30 may be laminated on the entire periphery of the first cover plate 20, so that the protective layer 30 is used to protect all edge portions of the first cover plate 20 from cracks when impacted due to the buffering effect of the protective layer 30, thereby further reducing the fragility of the first cover plate 20 and improving the impact resistance of the first cover plate 20.

[0044] Optionally, in one embodiment of the present application, Figure 1 and Figure 2As shown, in the direction Y perpendicular to the first plane, the thickness d1 of the protective layer 30 is equal to the thickness d2 of the first cover plate 20, and the orthographic projection of the protective layer 30 on the first plane does not overlap with the orthographic projection of the first cover plate 20 on the first plane. That is, in this embodiment, the protective layer 30 and the first cover plate 20 are in the same layer, and the protective layer 30 is attached to the side of the first cover plate 20, so that when the side of the first cover plate 20 is impacted by the outside world, the elastic protective layer 30 plays a buffering role, reduces the impact force on the side of the first cover plate 20, and thus makes it difficult for the edge of the first cover plate to crack due to the external impact.

[0045] Optionally, in another embodiment of the present application, Figure 3-Figure 5 As shown in FIG. 1 , in the direction Y perpendicular to the first plane, the thickness d1 of the protective layer 30 is greater than the thickness d2 of the first cover plate 20, and the orthographic projection of the protective layer 30 on the first plane partially overlaps with the orthographic projection of the first cover plate 20 on the first plane. That is, in this embodiment, the protective layer 30 is not only attached to the side edge of the first cover plate 20, but also extends from the side edge of the first cover plate 20 to the surface of the first cover plate 20 facing the display panel 10 (specifically, as shown in FIG. 1 ). Figure 3 ), or extends to the surface of the first cover plate 20 away from the display panel 10 (specifically as shown Figure 4 ), or extends to the surface of the first cover plate 20 facing the display panel 10 and the surface of the first cover plate 20 facing away from the display panel 10 (as shown in FIG. Figure 5 As shown), it is equivalent to using the protective layer 30 to semi-enclose or fully surround the side of the first cover plate 20 for edge protection.

[0046] It should be noted that, in the above embodiment, the thickness d1 of the protective layer 30 in the direction Y perpendicular to the first plane is the maximum thickness of the protective layer 30 in the direction Y perpendicular to the first plane.

[0047] Considering that when the side of the first cover plate 20 is impacted by the outside world, the direction of the external impact force may be directly directed to the side of the first cover plate 20, such as Figure 1 and Figure 2 As shown by the arrow A1 in FIG. 1 , it may also be directed obliquely from the first cover plate 20 toward the display panel 10 to the side of the first cover plate 20, such as Figure 3 and Figure 5 As shown by the arrow A2 in FIG. 1 , it is also possible that the first cover plate 20 is directed obliquely from the side away from the display panel 10 to the side of the first cover plate 20, such as Figure 4 and Figure 5As shown by the A3 arrow in the figure, the impact force obliquely directed to the side of the first cover plate 20 is likely to cause cracks on the edge of the surface of the first cover plate 20 facing and / or away from the display panel 10. Based on this, in the present embodiment, not only the side of the first cover plate 20 is protected by the portion of the protective layer 30 attached to the side of the first cover plate 20, but also the edge portion of the surface of the first cover plate 20 facing and / or away from the display panel 10 is protected by the portion of the protective layer 30 extending to the surface of the first cover plate 20 facing and / or away from the display panel 10, thereby enhancing the protection effect on the edge portion of the first cover plate 20.

[0048] Furthermore, compared to only arranging the protective layer 30 on the side of the first cover plate 20, that is, the protective layer 30 is only bonded to the side of the first cover plate 20, in the present embodiment, the protective layer 30 is not only bonded to the side of the first cover plate 20, but also bonded to the edge portion of the surface of the first cover plate 20 facing and / or away from the display panel 10, thereby increasing the contact area between the protective layer 30 and the first cover plate 20, making the protective layer 30 more secure and less likely to fall off from the side of the first cover plate 20.

[0049] In practical applications, the display panel 10 and the first cover plate 20 are bonded together by the adhesive layer 40. Figure 1-5 As shown, the display module 100 also includes a first adhesive layer 40 located between the display panel 10 and the first cover plate 20, but in the prior art, the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located on the inner side of the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the first adhesive layer 40 on the first plane is located within the orthographic projection of the first cover plate 20 on the first plane, and there is a certain distance between the edge of the orthographic projection of the first adhesive layer 40 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the first adhesive layer 40 is retracted relative to the edge of the first cover plate 20, which is to prevent the first adhesive layer 40 from overflowing.

[0050] The inventors have found that in order to increase the firmness of the side fit between the protective layer 30 and the first cover plate 20. Optionally, in one embodiment of the present application, Figure 6 As shown, the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, and the orthographic projection of the first adhesive layer 40 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane.

[0051] In this embodiment, the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the first cover plate 20 on the first plane is located within the orthographic projection of the first adhesive layer 40 on the first plane, and there is a certain distance between the edge of the orthographic projection of the first cover plate 20 on the first plane and the edge of the orthographic projection of the first adhesive layer 40 on the first plane, that is, the first adhesive layer 40 expands outward relative to the edge of the first cover plate 20.

[0052] Meanwhile, in the present embodiment, the orthographic projection of the first adhesive layer 40 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane. Since the protective layer 30 at least fits the side edge of the first cover plate 20, the first adhesive layer 40 expands outward relative to the edge of the first cover plate 20 to at least partially contact the protective layer 30, thereby enhancing the fixation of the protective layer 30. At this time, not only when the side edge of the first cover plate 20 is directly impacted, the protective layer 30 can play a buffering role, but also when the first cover plate 20 is impacted by the side edge of the first cover plate 20 obliquely directed toward the display panel 10, such as Figure 6 As shown by the middle arrow A2 , the portion of the first adhesive layer 40 that expands outward relative to the edge of the first cover plate 20 can also play a buffering role, further enhancing the protection effect on the edge portion of the first cover plate 20 .

[0053] It should be noted that Figure 6 The example in which the thickness d1 of the protective layer 30 and the thickness d2 of the first cover plate 20 are equal in the direction Y perpendicular to the first plane is used for demonstration. It can be imagined that this embodiment is also applicable to the case in which the thickness d1 of the protective layer 30 is greater than the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane.

[0054] It should also be noted that Figure 6 The example in which the orthographic projection of the protective layer 30 on the first plane completely overlaps with the orthographic projection of the first adhesive layer 40 on the first plane is used for illustration. It is understandable that the orthographic projection of the protective layer 30 on the first plane and the orthographic projection of the first adhesive layer 40 on the first plane may also partially overlap.

[0055] Based on the above embodiments, optionally, in one embodiment of the present application, Figure 7As shown, the protective layer 30 and the first adhesive layer 40 are an integrally formed structure, that is, in this embodiment, the protective layer 30 can be formed by extending the first adhesive layer 40 to the side of the first cover plate 20. Specifically, the display panel 10 includes a surface to be bonded 11, and the first adhesive layer 40 can be firstly coated on one side of the surface to be bonded 11 of the display panel 10, and the first cover plate 20 is bonded to the side of the surface to be bonded 11 of the display panel 10 by using the first adhesive layer 40, and the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane; then, a roller is used to roll back and forth on the side of the first cover plate 20 away from the display panel 10, so that the first adhesive layer 40 extends to the side of the first cover plate 20 to form a protective layer bonded to the side of the first cover plate 20.

[0056] like Figure 1-Figure 7 As shown, a polarizer 50 is usually disposed on the side of the display panel 10 close to the first cover plate 20, and the polarizer 50 is bonded to the display panel 10 through a pressure sensitive adhesive (PSA). Therefore, when the first adhesive layer 40 is coated on the side of the to-be-bonded surface 11 of the display panel 10, the first adhesive layer 40 is actually coated on the side of the polarizer 50 away from the display panel 10. In addition, as Figure 1-Figure 7 As shown, a back plate 60 is usually provided on the side of the display panel 10 away from the first cover plate 20. When the display module 100 is a foldable display module, such as a flexible organic light-emitting diode (OLED) display module, the strength of the display module can be enhanced by the back plate 60 to facilitate folding and curling.

[0057] In practical applications, such as Figure 1-Figure 7As shown, on the side of the first cover plate 20 away from the display panel 10, a second cover plate 80 is also attached through the second adhesive layer 70. Specifically, the second adhesive layer 70 is first coated on the second cover plate 80, and then the second cover plate coated with the second adhesive layer 70 is bonded to the side of the first cover plate 20 away from the display panel 10. In terms of process, it is required that the edge of the second adhesive layer 70 coated on the second cover plate 80 cannot exceed the edge of the second cover plate 80. In the production process, in order to ensure that the edge of the second adhesive layer 70 coated on the second cover plate 80 does not exceed the edge of the second cover plate 80, when the second adhesive layer 70 is coated on the second cover plate 80, the edge of the second adhesive layer 70 is controlled to be far away from the edge of the second cover plate 80. Then, when the second cover plate 80 coated with the second adhesive layer 70 is bonded to the first cover plate 20 away from the display panel 10, the second adhesive layer 70 is bonded to the second cover plate 80. When the display panel 10 is on one side, the edge of the second glue layer 70 between the first cover plate 20 and the second cover plate 80 on the first plane is located inside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the second glue layer 70 between the first cover plate 20 and the second cover plate 80 on the first plane is located within the orthographic projection of the first cover plate 20 on the first plane, and there is a certain distance between the edge of the orthographic projection of the second glue layer 70 between the first cover plate 20 and the second cover plate 80 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the second glue layer 70 between the first cover plate 20 and the second cover plate 80 is retracted relative to the edge of the first cover plate 20.

[0058] The inventor has found that in order to increase the firmness of the side fit between the protective layer 30 and the first cover plate 20. Optionally, in another embodiment of the present application, as Figure 8 As shown, the display module 100 also includes a second adhesive layer 70 located on the side of the first cover plate 20 away from the display panel 10, the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, and the orthographic projection of the second adhesive layer 70 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 in the first direction.

[0059] In this embodiment, the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the first cover plate 20 on the first plane is located within the orthographic projection of the second adhesive layer 70 on the first plane, and there is a certain distance between the edge of the orthographic projection of the first cover plate 20 on the first plane and the edge of the orthographic projection of the second adhesive layer 70 on the first plane, that is, the second adhesive layer 70 expands outward relative to the edge of the first cover plate 20.

[0060] At the same time, in this embodiment, the orthographic projection of the second adhesive layer 70 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane. Since the protective layer 30 is at least in contact with the side of the first cover plate 20, the second adhesive layer 70 expands outward relative to the edge of the first cover plate 20 to at least partially contact with the protective layer 30, thereby enhancing the fixation of the protective layer. At this time, not only when the side of the first cover plate 20 is directly impacted, the protective layer 30 can play a buffering role, but also when the first cover plate 20 is impacted by the side of the first cover plate 20 that is obliquely directed to the side of the first cover plate 20 away from the display panel 10, such as Figure 8 As shown by the middle arrow A3 , the portion of the second adhesive layer 70 that expands outward relative to the edge of the first cover plate 20 can also play a buffering role, further enhancing the protection effect on the edge portion of the first cover plate 20 .

[0061] It should be noted that Figure 8 The example in which the thickness d1 of the protective layer 30 and the thickness d2 of the first cover plate 20 are equal in the direction Y perpendicular to the first plane is used for demonstration. It can be imagined that this embodiment is also applicable to the case in which the thickness d1 of the protective layer 30 is greater than the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane.

[0062] It should also be noted that Figure 8 The example in which the orthographic projection of the protective layer 30 on the first plane and the orthographic projection of the second adhesive layer 70 on the first plane completely overlap is used for illustration. It is understandable that the orthographic projection of the protective layer 30 on the first plane and the orthographic projection of the second adhesive layer 70 on the first plane may also partially overlap.

[0063] Based on the above embodiments, optionally, in one embodiment of the present application, Fig. 9 As shown, the protective layer 30 and the second adhesive layer 70 are an integrally formed structure, that is, in this embodiment, the protective layer 30 can be formed by the second adhesive layer 70 extending to the side of the first cover plate 20. Specifically, a second cover plate 80 coated with the second adhesive layer 70 is provided, and the second cover plate 80 is attached to the side of the first cover plate 20 away from the display panel 10 by using the second adhesive layer 70, and the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane; then, a roller is used to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20, so that the second adhesive layer 70 extends to the side of the first cover plate 20 to form the protective layer 30 attached to the side of the first cover plate 20.

[0064] It should be noted that in the actual process, after the second cover plate 80 is attached to the side of the first cover plate 20 away from the display panel 10, the edge of the display module 100 will be cut to remove the excess second cover plate 80. Therefore, in this embodiment, when the second adhesive layer 70 is coated on the second cover plate 80, the edge of the second adhesive layer 70 is no longer far away from the edge of the second cover plate 80, but the edge of the second adhesive layer 70 can be controlled to be closer to the edge of the second cover plate 80, and even the edge of the second adhesive layer 70 and the edge of the second cover plate 80 overlap. Therefore, after the second cover plate 80 coated with the second adhesive layer 70 is attached to the side of the first cover plate 20 away from the display panel 10, and a roller is used to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20 so that the second adhesive layer 70 extends to the side of the first cover plate 20 to form a protective layer 30 attached to the side of the first cover plate 20, the excess second adhesive layer 70 and the second cover plate 80 can be removed together.

[0065] Optionally, in another embodiment of the present application, Fig.10 As shown, the display module 100 further includes a first adhesive layer 40 located between the display panel 10 and the first cover plate 20, the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, and the orthographic projection of the first adhesive layer 40 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane;

[0066] The display module 100 also includes a second adhesive layer 70 located on the side of the first cover plate 20 facing away from the display panel 10, the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, and the orthographic projection of the second adhesive layer 70 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 in the first direction.

[0067] In this embodiment, the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the first cover plate 20 on the first plane is located within the orthographic projection of the first adhesive layer 40 on the first plane, and there is a certain distance between the edge of the orthographic projection of the first cover plate 20 on the first plane and the edge of the orthographic projection of the first adhesive layer 40 on the first plane, that is, the first adhesive layer 40 expands outward relative to the edge of the first cover plate 20.

[0068] At the same time, in this embodiment, the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the first cover plate 20 on the first plane is located within the orthographic projection of the second adhesive layer 70 on the first plane, and there is a certain distance between the edge of the orthographic projection of the first cover plate 20 on the first plane and the edge of the orthographic projection of the second adhesive layer 70 on the first plane, that is, the second adhesive layer 70 expands outward relative to the edge of the first cover plate 20.

[0069] Furthermore, in this embodiment, the orthographic projection of the first adhesive layer 40 on the first plane at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane, and the orthographic projection of the second adhesive layer 70 on the first plane also at least partially overlaps with the orthographic projection of the protective layer 30 on the first plane. Since the protective layer 30 is at least in contact with the side of the first cover plate 20, the first adhesive layer 40 and the second adhesive layer 70 are both expanded relative to the edge of the first cover plate 20 to at least partially contact with the protective layer 30, thereby further enhancing the fixation of the protective layer 30. At this time, not only when the side of the first cover plate 20 is directly impacted, the protective layer 30 can play a buffering role, but also when the first cover plate 20 is impacted by the side of the first cover plate 20 obliquely directed toward the display panel 10, such as Fig.10 As shown by the arrow A2 in FIG. 1 , the portion of the first adhesive layer 40 that expands outward relative to the edge of the first cover plate 20 can play a buffering role. At the same time, when the first cover plate 20 is subjected to an impact force that is directed obliquely from the side of the first cover plate 20 away from the display panel 10 toward the side of the first cover plate 20, the portion of the second adhesive layer 40 that expands outward relative to the edge of the first cover plate 20 can also play a buffering role, thereby further enhancing the protection effect on the edge portion of the first cover plate 20.

[0070] It should be noted that Fig.10 The example in which the thickness d1 of the protective layer 30 and the thickness d2 of the first cover plate 20 are equal in the direction Y perpendicular to the first plane is used for demonstration. It can be imagined that this embodiment is also applicable to the case in which the thickness d1 of the protective layer 30 is greater than the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane.

[0071] It should also be noted that Fig.10 The example in which the orthographic projection of the protective layer 30 on the first plane completely overlaps with the orthographic projections of the first adhesive layer 40 and the second adhesive layer 70 on the first plane is used for illustration. It can be understood that the orthographic projection of the protective layer 30 on the first plane may also partially overlap with the orthographic projections of the first adhesive layer 40 and the second adhesive layer 70 on the first plane.

[0072] Based on the above embodiments, optionally, in one embodiment of the present application, Fig.11 As shown, the protective layer 30 , the first adhesive layer 40 and the second adhesive layer 70 are an integrally formed structure, that is, in this embodiment, the protective layer 30 is formed by extending the first adhesive layer 40 and the second adhesive layer 70 simultaneously to the side of the first cover plate 20 .

[0073] Specifically, the display panel 10 includes a surface to be bonded 11, and a first adhesive layer 40 can be firstly coated on one side of the surface to be bonded 11 of the display panel 10, and the first cover plate 20 is bonded to the side of the surface to be bonded 11 of the display panel 10 using the first adhesive layer 40, and the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane; then, a second cover plate 80 coated with a second adhesive layer 70 is provided, and the second adhesive layer 70 is used to bond the second cover plate 80 to the side of the first cover plate 20 away from the display panel 10, and the edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane; further, a roller is used to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20, so that the first adhesive layer 40 and the second adhesive layer 70 are simultaneously extended to the side of the first cover plate 20 to form a protective layer 30 bonded to the side of the first cover plate 20.

[0074] It can be understood that since the first adhesive layer 40 and the second adhesive layer 70 expand outward relative to the edge of the first cover plate 20 at the same time, in the subsequent process of using a roller to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20, the portion of the first adhesive layer 40 that expands outward relative to the edge of the first cover plate 20 and the portion of the second adhesive layer 70 that expands outward relative to the edge of the first cover plate 20 will be bonded together to form a protective layer 30, thereby realizing edge protection for the edge portion of the first cover plate 20, thereby achieving the purpose of protecting the edge portion of the first cover plate and increasing the buffering effect.

[0075] The inventor further studied and found that Fig.11 As shown, when the first adhesive layer 40 and the second adhesive layer 70 expand outward relative to the edge of the first cover plate 20 at the same time, if the distance of the first adhesive layer 40 and the second adhesive layer 70 expanding outward relative to the edge of the first cover plate 20 is small, the width d3 of the protective layer 30 formed on the side of the first cover plate 20 in the first direction X is small, and then the buffering effect of the protective layer 30 when subjected to external impact is not ideal. The first direction X is parallel to the first plane, and the first direction X is perpendicular to the side of the first cover plate 20. In addition, the width of the protective layer 30 in the first direction X is also related to the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane.

[0076] Based on this, optionally, in one embodiment of the present application, when the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane is less than 50 μm, the distance between the edge of the orthographic projection of the first adhesive layer 40 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane is greater than or equal to 0.25 mm, and the distance between the edge of the orthographic projection of the second adhesive layer 70 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane is greater than or equal to 0.25 mm, that is, the first adhesive layer 40 and the second adhesive layer 70 are both expanded by more than or equal to 0.25 mm relative to the edge of the first cover plate 20;

[0077] When the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane is greater than or equal to 50 μm, the distance between the edge of the orthographic projection of the first adhesive layer 40 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane is greater than or equal to 0.35 mm, and the distance between the edge of the orthographic projection of the second adhesive layer 70 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane is greater than or equal to 0.35 mm, that is, the first adhesive layer 40 and the second adhesive layer 70 are both expanded by more than or equal to 0.35 mm relative to the edge of the first cover plate 20.

[0078] It can be seen that in this embodiment, when the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane is less than 50 μm, the first adhesive layer 40 and the second adhesive layer 70 simultaneously expand outward by at least 0.25 mm relative to the edge of the first cover plate 20, so that the width of the protective layer 30 in the first direction X is large enough to provide a good buffering effect when subjected to external impact. When the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane is greater than or equal to 50 μm, the first adhesive layer 40 and the second adhesive layer 70 simultaneously expand outward by at least 0.35 mm relative to the edge of the first cover plate 20, so that the width of the protective layer 30 in the first direction X is large enough to provide a good buffering effect when subjected to external impact.

[0079] It can be understood that, the greater the thickness d2 of the first cover plate 20 in the direction Y perpendicular to the first plane, the greater the distance that the first adhesive layer 40 and the second adhesive layer 70 need to expand outward relative to the edge of the first cover plate 20, so that the width of the protective layer 30 in the first direction X is large enough to provide a good buffering effect when subjected to external impact.

[0080] It should be noted that the present application does not limit the specific distance that the first adhesive layer 40 and the second adhesive layer 70 extend outward relative to the edge of the first cover plate 20, as long as the width of the protective layer 30 in the first direction X is large enough to provide a good buffering effect when subjected to external impact.

[0081] It should also be noted that Fig.10 The following example shows that the distances of the first adhesive layer 40 and the second adhesive layer 70 extending outward from the edge of the first cover plate 20 are equal, namely d3. Of course, the distances of the first adhesive layer 40 and the second adhesive layer 70 extending outward from the edge of the first cover plate 20 may also be unequal, depending on the specific situation.

[0082] As is known from the foregoing, the first adhesive layer 40 is first coated on the surface 11 of the display panel 10 to be bonded, and then the first cover plate 20 is bonded to the side of the surface 11 of the display panel 10 to be bonded. At this time, the distance of the first adhesive layer 40 extending outward relative to the edge of the first cover plate 20 may not be easy to determine. At the same time, the second adhesive layer 70 is first coated on the second cover plate 80, and then the second cover plate 80 coated with the second adhesive layer 70 is bonded to the side of the first cover plate 20 away from the display panel 10. At this time, the distance of the second adhesive layer 70 extending outward relative to the edge of the first cover plate 20 may not be easy to determine.

[0083] Based on this, optionally, in one embodiment of the present application, Fig.11 As shown, the orthographic projection of the first adhesive layer 40 on the first plane and the orthographic projection of the second adhesive layer 70 on the first plane both coincide with the orthographic projection of the display panel 10 on the first plane.

[0084] In this embodiment, considering that the distance that the first cover plate 20 is retracted relative to the edge of the display panel 10 is relatively easy to control, that is, the edge of the orthographic projection of the first cover plate 20 on the first plane and the edge of the orthographic projection of the display panel 10 on the first plane are relatively easy to control, therefore, the edge of the first cover plate 20 is not directly used as a reference, but converted to the edge of the display panel 10 as a reference.

[0085] Specifically, when the first adhesive layer 40 is coated on the surface 11 of the display panel 10 to be bonded, the edge of the first adhesive layer 40 can be controlled based on the edge of the display panel 10 so that the edge of the orthographic projection of the first adhesive layer 40 on the first plane coincides with the edge of the orthographic projection of the display panel 10 on the first plane.

[0086] At the same time, the edge of the display panel 10 is flush with the edge of the second cover plate 80 when it is cut, so the edge of the second adhesive layer 70 can also be controlled based on the edge of the display panel 10 (or the edge of the second cover plate 80 when it is cut). Specifically, the orthographic projection of the second adhesive layer 70 on the first plane can be controlled to be greater than or equal to the orthographic projection of the display panel 10 on the first plane, so that after the second cover plate 80 is cut, the edge of the orthographic projection of the second adhesive layer 70 on the first plane coincides with the edge of the orthographic projection of the display panel 10 on the first plane.

[0087] On the basis that the edge of the orthographic projection of the first adhesive layer 40 on the first plane coincides with the edge of the orthographic projection of the display panel 10 on the first plane, and the edge of the orthographic projection of the second adhesive layer 70 on the first plane coincides with the edge of the orthographic projection of the display panel 10 on the first plane, as long as the distance between the edge of the orthographic projection of the display panel 10 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane is controlled (such as Fig.11d3) meets the requirement, that is, the distance between the edge of the orthographic projection of the first adhesive layer 40 and the second adhesive layer 70 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane meets the requirement, so that the width of the protective layer 30 in the first direction X is large enough to achieve a better buffering effect when subjected to external impact.

[0088] For example, when the thickness of the first cover plate 20 in the direction Y perpendicular to the first plane is less than 50 μm, the distance between the edge of the orthographic projection of the display panel 10 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane (e.g. Fig.11 If d3) is greater than or equal to 0.25 mm, the distance between the edge of the orthographic projection of the first adhesive layer 40 and the second adhesive layer 70 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane (e.g. Fig.11 When the thickness of the first cover plate 20 in the direction Y perpendicular to the first plane is greater than or equal to 50 μm, the distance between the edge of the orthographic projection of the display panel 10 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane (e.g. Fig.11 If d3) is greater than or equal to 0.35 mm, the distance between the edge of the orthographic projection of the first adhesive layer 40 and the second adhesive layer 70 on the first plane and the edge of the orthographic projection of the first cover plate 20 on the first plane (e.g. Fig.11 In the figure, d3) is also greater than or equal to 0.35 mm.

[0089] Optionally, in another embodiment of the present application, Figure 1-Figure 6 , Figure 8 , Fig.10 As shown, the protective layer 30 may also be a third adhesive layer 30 that is separately adhered to at least part of the side edge of the first cover plate 20, that is, in this embodiment, the protective layer 30 is a third adhesive layer 30 that is different from the first adhesive layer 40 and the second adhesive layer 70. At this time, the edge of the orthographic projection of the first adhesive layer 40 on the first plane may be located inside the edge of the orthographic projection of the first cover plate 20 on the first plane, and the edge of the orthographic projection of the second adhesive layer 70 on the first plane may also be located inside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the first adhesive layer 40 and the second adhesive layer 70 are simultaneously retracted relative to the edge of the first cover plate 20, and are separately adhered to the side edge of the first cover plate 20 to form the third adhesive layer 30.

[0090] Since the first adhesive layer 40 and the second adhesive layer 70 are both retracted relative to the edge of the first cover plate 20, Figure 3-Figure 5As shown, the third glue layer 30 formed separately may also extend to the surface of the first cover plate 20 facing and / or away from the display panel 10, so that the thickness of the third glue layer 30 is greater than the thickness of the first cover plate 20, and the orthographic projection of the third glue layer 30 on the first plane partially overlaps with the orthographic projection of the first cover plate 20 on the first plane. Figure 1-Figure 2 , Figure 6 , Figure 8 and Fig.10 As shown, the third adhesive layer 30 may also be equal to the thickness of the first cover plate 20 , and the orthographic projection of the third adhesive layer 30 on the first plane does not overlap with the orthographic projection of the first cover plate 20 on the first plane, that is, the third adhesive layer 30 is only attached to the side of the first cover plate 20 .

[0091] Based on any of the above embodiments, optionally, in an embodiment of the present application, Figure 1-Figure 11 As shown, the first cover plate 20 may be an ultra-thin glass (UTG) cover plate.

[0092] Fig.12 At the same time, a partial structural diagram of the existing display module 110 without using the ultra-thin glass UTG cover is shown, such as Fig.12 As shown, the display module 110 without the ultra-thin glass UTG cover plate includes a back plate 60, a display panel 10, a polarizer 50, a second adhesive layer 70 and a second cover plate 80 stacked in sequence, wherein the second cover plate 80 can be a PET cover plate (polyester plate) or a CPI cover plate (transparent polyimide cover plate). Although the PET cover plate and the CPI cover plate have the advantages of being transparent, soft and foldable, they have disadvantages such as easy aging, poor sealing, low hardness and easy scratching, which makes the display module 110 without the ultra-thin glass UTG cover plate have poor pressure bearing strength.

[0093] Therefore, in the display module 100 provided in the embodiment of the present application, an ultra-thin glass UTG cover plate is used as the first cover plate 20. The ultra-thin glass UTG has excellent characteristics due to its advantages such as high visible light transmittance, high hardness, scratch resistance, not easy to crease, high temperature resistance, good bendability, etc., especially the compressive strength is greatly improved. However, the disadvantage of ultra-thin glass UTG is that it has weak impact resistance. The edge of the ultra-thin glass UTG cover plate is prone to cracks when subjected to external impact. Therefore, in the display module 100 provided in the embodiment of the present application, a protective layer 30 is provided on at least part of the side of the first cover plate 20, and the protective layer 30 is elastic, so that the protective layer 30 is used to protect the edge of the first cover plate 20. When subjected to impact, it is not easy to crack due to the buffering effect of the protective layer 30, so that the advantages of the ultra-thin glass UTG can be fully utilized, so that the display module using the ultra-thin glass UTG cover plate has excellent characteristics. Moreover, in the display module 100 provided in the embodiment of the present application, the second cover plate 80 is a PET cover plate or a CPI cover plate, which on the one hand increases the surface hardness of the overall cover plate, and on the other hand reduces the fragility of the first cover plate 20 which is an ultra-thin glass UTG cover plate, thereby greatly improving the reliability of the display module 100.

[0094] Based on any of the above embodiments, optionally, in an embodiment of the present application, Fig.13 As shown, the display module 100 also includes an ink bearing layer 90 located between the display panel 10 and the first adhesive layer 40, the ink bearing layer 90 includes a first portion 91 and a second portion 92 surrounding the first portion 91, the second portion 92 carries an ink layer 93, and the orthographic projection of the ink layer 93 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane.

[0095] In this embodiment, the protective layer 30 can be transparent and will not affect the frame design of the display module 100. Therefore, an ink bearing layer 90 can be separately arranged between the display panel 10 and the first adhesive layer 40, that is, the ink bearing layer 90 is independent of the protective layer 30, and the ink bearing layer 90 includes a first part 91 and a second part 92 surrounding the first part 91, and the second part 92 carries an ink layer 93, and the ink layer 93 is formed of an opaque ink material.

[0096] In this embodiment, the orthographic projection of the ink layer 93 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane, that is, the orthographic projection of the ink layer 93 on the first plane is located outside the orthographic projection of the first cover plate 20 on the first plane, so that the ink layer 93 can be very narrow, which facilitates the narrow-frame large-screen display of the display module 100.

[0097] The present application also provides a method for preparing a display module. Fig.14 As shown, and refer to Figure 1-Figure 6 , Figure 8 and Fig.10 As shown, the method includes:

[0098] S100: providing a display panel 10, wherein the display panel 10 includes a surface to be bonded 11;

[0099] S200: providing a first cover plate 20, and laminating the first cover plate 20 to one side of the to-be-laminated surface 11 of the display panel 10, and an edge of the orthographic projection of the first cover plate 20 on a first plane is located inside an edge of the orthographic projection of the display panel 10 on the first plane, the first plane being the plane where the display module is located;

[0100] S300: A protective layer 30 is disposed on at least part of the side of the first cover plate 20 , and the protective layer 30 is elastic.

[0101] In the method for preparing a display module provided in an embodiment of the present application, the edge of the orthographic projection of the first cover plate 20 on the plane where the display module is located is arranged to be located inside the edge of the orthographic projection of the display panel 10 on the plane where the display module is located, that is, the first cover plate 20 is arranged to be retracted relative to the edge of the display panel 10, thereby preventing the first cover plate 20 from being cut when the edge of the display module is cut, thereby preventing the edge portion of the first cover plate 20 from being cracked. At the same time, by laminating a protective layer 30 on at least part of the side edge of the first cover plate 20, and the protective layer has elasticity, the protective layer 30 is used to protect the edge portion of the first cover plate 20 from being easily cracked when it is impacted due to the buffering effect of the protective layer 30, thereby reducing the fragility of the first cover plate 20 and improving the reliability of the display module.

[0102] Since various situations in which the protection layer 30 is located at least partially on the side of the first cover plate 20 have been described in detail in the aforementioned embodiments, they will not be described again here.

[0103] Based on the above embodiments, optionally, in one embodiment of the present application, refer to Figure 7 As shown, attaching the first cover plate 20 to the side of the to-be-attached surface 11 of the display panel 10 includes:

[0104] A first adhesive layer 40 is coated on one side of the to-be-attached surface 11 of the display panel 10, and the first cover plate 20 is attached to the to-be-attached surface 11 of the display panel 10 by using the first adhesive layer 40, wherein the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane;

[0105] The protective layer 30 is disposed on at least part of the side of the first cover plate 20, including:

[0106] The roller is used to roll back and forth on the side of the first cover plate 20 away from the display panel 10 , so that the first adhesive layer 40 extends to the side of the first cover plate 20 to form a protective layer.

[0107] Optionally, in another embodiment of the present application, reference Fig. 9 As shown, before the protective layer 30 is attached to at least a portion of the side edge of the first cover plate 20, the method further includes:

[0108] Providing a second cover plate 80 coated with a second adhesive layer 70, and using the second adhesive layer 70 to adhere the second cover plate 80 to a side of the first cover plate 20 away from the display panel 10, wherein an edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside an edge of the orthographic projection of the first cover plate 20 on the first plane;

[0109] The protective layer 30 is disposed on at least part of the side of the first cover plate 20, including:

[0110] The roller is used to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20 , so that the second adhesive layer 70 extends to the side edge of the first cover plate 20 to form a protective layer.

[0111] Optionally, in another embodiment of the present application, Fig.11 As shown, attaching the first cover plate 20 to the side of the to-be-attached surface 11 of the display panel 10 includes:

[0112] A first adhesive layer 40 is coated on one side of the to-be-attached surface 11 of the display panel 10, and the first cover plate 20 is attached to the to-be-attached surface 11 of the display panel 10 by using the first adhesive layer 40, wherein the edge of the orthographic projection of the first adhesive layer 40 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane;

[0113] Before the protective layer 30 is attached to at least a portion of the side edge of the first cover plate 20, the method further includes:

[0114] Providing a second cover plate 80 coated with a second adhesive layer 70, and using the second adhesive layer 70 to adhere the second cover plate 80 to a side of the first cover plate 20 away from the display panel 10, wherein an edge of the orthographic projection of the second adhesive layer 70 on the first plane is located outside an edge of the orthographic projection of the first cover plate 20 on the first plane;

[0115] The protective layer 30 is disposed on at least part of the side of the first cover plate 20, including:

[0116] The roller is used to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20 , so that the first adhesive layer 40 and the second adhesive layer 70 are extended to the side of the first cover plate 20 at the same time to form a protective layer.

[0117] It can be understood that since the first adhesive layer 40 and the second adhesive layer 70 expand outward relative to the edge of the first cover plate 20 at the same time, in the subsequent process of using a roller to roll back and forth on the side of the second cover plate 80 away from the first cover plate 20, the portion of the first adhesive layer 40 that expands outward relative to the edge of the first cover plate 20 and the portion of the second adhesive layer 70 that expands outward relative to the edge of the first cover plate 20 will be bonded together to form a protective layer 30, thereby realizing edge protection for the edge portion of the first cover plate 20, thereby achieving the purpose of protecting the edge portion of the first cover plate and increasing the buffering effect.

[0118] Optionally, in another embodiment of the present application, refer to Figure 1-Figure 6 , Figure 8 and Fig.10 As shown, the protective layer 30 is attached to at least part of the side of the first cover plate 20 and includes:

[0119] A third adhesive layer 30 is separately attached to at least a portion of the side edge of the first cover plate 20 as a protective layer 30 .

[0120] Based on any of the above embodiments, optionally, in an embodiment of the present application, Fig.13 As shown, before coating the first adhesive layer 40 on the side of the to-be-attached surface 11 of the display panel 10 and attaching the first cover plate 20 to the side of the to-be-attached surface 11 of the display panel 10 using the first adhesive layer 40, the method further includes:

[0121] An ink bearing layer 90 is formed on one side of the to-be-bonded surface 11 of the display panel 10 , wherein the ink bearing layer 90 includes a first portion 91 and a second portion 92 surrounding the first portion 91 , and an ink layer 93 is formed on the second portion 92 ;

[0122] The first adhesive layer 40 is coated on one side of the to-be-bonded surface 11 of the display panel 10, and the first cover plate 20 is bonded to the to-be-bonded surface 11 of the display panel 10 by using the first adhesive layer 40, including:

[0123] A first adhesive layer 40 is coated on a side of the ink bearing layer 90 facing away from the display panel 10, and the first cover plate 20 is attached to the side of the ink bearing layer 90 facing away from the display panel 10 using the first adhesive layer 40, wherein the orthographic projection of the ink layer 93 on the first plane is located outside the edge of the orthographic projection of the first cover plate 20 on the first plane.

[0124] The present application also provides a display device 200, such as Fig.15 As shown, the display device 200 includes the display module 100 provided in any of the above embodiments. Since the display module 100 has been described in detail in the above embodiments, it will not be repeated here. The display device 200 can be any electronic device with a display function, such as a touch screen, a mobile phone, a tablet computer, a laptop computer, an e-book or a television.

[0125] In summary, the display module and its preparation method, and the display device provided in the embodiments of the present application are configured such that the edge of the orthographic projection of the first cover plate on the plane where the display module is located is located on the inner side of the edge of the orthographic projection of the display panel on the plane where the display module is located, that is, the first cover plate is configured to be retracted relative to the edge of the display panel, thereby preventing the first cover plate from being cut when the edge of the display module is cut and causing cracks to be generated on the edge portion of the first cover plate. At the same time, a protective layer is provided on at least part of the side edge of the first cover plate, and the protective layer has elasticity, so that the edge portion of the first cover plate is protected by the protective layer, and when impacted, cracks are not easily generated due to the buffering effect of the protective layer, thereby improving the impact resistance of the first cover plate, and allowing the display module to have excellent bending flexibility.

[0126] The various parts in this manual are described in a combination of parallel and progressive ways. Each part focuses on the differences from other parts, and the same or similar parts between the various parts can be referenced to each other.

[0127] With respect to the above description of the disclosed embodiments, the features described in the embodiments in this specification may be replaced or combined with each other, so that professionals in the field can implement or use the present application. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display module, characterized in that: It comprises a display panel and a first cover plate located at one side of the display panel, wherein an edge of an orthographic projection of the first cover plate on a first plane is located inside an edge of an orthographic projection of the display panel on the first plane, and the first plane is a plane where the display module is located; The display module further comprises a protective layer which is arranged in contact with at least part of the side edge of the first cover plate, and the protective layer is elastic; The display module further includes a first adhesive layer located between the display panel and the first cover plate, wherein an edge of an orthographic projection of the first adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and an orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer and the first adhesive layer are an integrally formed structure; Alternatively, the display module further comprises a second adhesive layer located on a side of the first cover plate away from the display panel, an edge of an orthographic projection of the second adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and an orthographic projection of the second adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer and the second adhesive layer are an integrally formed structure; Alternatively, the display module further includes a first adhesive layer located between the display panel and the first cover plate, wherein an edge of the orthographic projection of the first adhesive layer on the first plane is located outside an edge of the orthographic projection of the first cover plate on the first plane, and the orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the display module further includes a second adhesive layer located on a side of the first cover plate away from the display panel, wherein an edge of the orthographic projection of the second adhesive layer on the first plane is located outside an edge of the orthographic projection of the first cover plate on the first plane, and the orthographic projection of the second adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer, the first adhesive layer and the second adhesive layer are an integrally formed structure.

2. The display module according to claim 1, characterized in that: The protection layer is disposed around a periphery of the first cover plate.

3. The display module according to claim 1, characterized in that: In a direction perpendicular to the first plane, the thickness of the protective layer is equal to the thickness of the first cover plate, and the orthographic projection of the protective layer on the first plane does not overlap with the orthographic projection of the first cover plate on the first plane.

4. The display module according to claim 1, characterized in that: In a direction perpendicular to the first plane, the thickness of the protective layer is greater than the thickness of the first cover plate, and an orthographic projection of the protective layer on the first plane partially overlaps with an orthographic projection of the first cover plate on the first plane.

5. The display module according to claim 1, characterized in that: The display module further includes a first adhesive layer located between the display panel and the first cover plate, wherein an edge of an orthographic projection of the first adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and the orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the display module further includes a second adhesive layer located on a side of the first cover plate away from the display panel, wherein an edge of an orthographic projection of the second adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and the orthographic projection of the second adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer, the first adhesive layer and the second adhesive layer are an integrally formed structure; When the thickness of the first cover plate in the direction perpendicular to the first plane is less than 50 μm, the distance between the edge of the orthographic projection of the first adhesive layer on the first plane and the edge of the orthographic projection of the first cover plate on the first plane is greater than or equal to 0.25 mm, and the distance between the edge of the orthographic projection of the second adhesive layer on the first plane and the edge of the orthographic projection of the first cover plate on the first plane is greater than or equal to 0.25 mm; When the thickness of the first cover plate in a direction perpendicular to the first plane is greater than or equal to 50 μm, the distance between the edge of the orthographic projection of the first adhesive layer on the first plane and the edge of the orthographic projection of the first cover plate on the first plane is greater than or equal to 0.35 mm, and the distance between the edge of the orthographic projection of the second adhesive layer on the first plane and the edge of the orthographic projection of the first cover plate on the first plane is greater than or equal to 0.35 mm.

6. The display module according to claim 5, characterized in that: An orthographic projection of the first adhesive layer on the first plane and an orthographic projection of the second adhesive layer on the first plane both coincide with an orthographic projection of the display panel on the first plane.

7. The display module according to claim 1, characterized in that: The first cover plate is an ultra-thin glass cover plate.

8. The display module according to claim 1, characterized in that: The display module further includes a first adhesive layer located between the display panel and the first cover plate, wherein an edge of an orthographic projection of the first adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and an orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; The display module also includes an ink bearing layer located between the display panel and the first adhesive layer, the ink bearing layer includes a first part and a second part surrounding the first part, the second part carries an ink layer, and the orthographic projection of the ink layer on the first plane is located outside the edge of the orthographic projection of the first cover plate on the first plane.

9. A method for preparing a display module, characterized in that: include: Providing a display panel, the display panel comprising a surface to be bonded; Providing a first cover plate, laminating the first cover plate on one side of the to-be-laminated surface of the display panel, and an edge of the orthographic projection of the first cover plate on a first plane is located inside an edge of the orthographic projection of the display panel on the first plane, and the first plane is the plane where the display module is located; A protective layer is disposed on at least part of the side edge of the first cover plate, and the protective layer is elastic; The display module further includes a first adhesive layer located between the display panel and the first cover plate, an edge of an orthographic projection of the first adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and an orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer and the first adhesive layer are an integrally formed structure; Alternatively, the display module further comprises a second adhesive layer located on a side of the first cover plate away from the display panel, an edge of an orthographic projection of the second adhesive layer on the first plane is located outside an edge of an orthographic projection of the first cover plate on the first plane, and an orthographic projection of the second adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer and the second adhesive layer are an integrally formed structure; Alternatively, the display module further includes a first adhesive layer located between the display panel and the first cover plate, wherein an edge of the orthographic projection of the first adhesive layer on the first plane is located outside an edge of the orthographic projection of the first cover plate on the first plane, and the orthographic projection of the first adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the display module further includes a second adhesive layer located on a side of the first cover plate away from the display panel, wherein an edge of the orthographic projection of the second adhesive layer on the first plane is located outside an edge of the orthographic projection of the first cover plate on the first plane, and the orthographic projection of the second adhesive layer on the first plane at least partially overlaps with an orthographic projection of the protective layer on the first plane; the protective layer, the first adhesive layer and the second adhesive layer are an integrally formed structure.

10. A display device, characterized in that: A display module comprising any one of claims 1-8.

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