Display module, preparation method thereof and display device

Abstract

The invention provides a display module, a preparation method thereof and a display device. The display module comprises a display panel which comprises a display area and a bending area located on one side of the display area; the polaroid is located on the display side of the display panel, and at least part of the polaroid is located in the display area; the protective layer is located on the display side of the display panel, at least part of the protective layer is located in the bending area, and a gap exists between the protective layer and the polaroid; and at least part of the first glue layer fills the gap. On one hand, a climbing area formed by coating protective glue is avoided, so that the frame of the display module is narrowed; on the other hand, the reliability of the display module can be improved by filling the first adhesive layer at the interval; furthermore, the interval is filled with the first adhesive layer, so that the anti-static effect can be achieved, and the anti-static performance of the display module is improved. Therefore, according to the technical scheme provided by the invention, the frame width of the display module can be reduced, the reliability and the electrostatic protection performance of the display module are improved, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of display technologies, and particularly to a display module, a preparation method thereof, and a display device. Background Art

[0002] With the development of Organic Light-Emitting Diode (OLED) technology, due to its advantages such as bendability, foldability, and narrow bezels, it currently occupies the mid- to high-end market of display devices. However, in the manufacturing process of OLED flexible display modules, it is difficult to further reduce the width of the bezel of the display module, and the reliability and electrostatic protection performance of the display module are low. Summary of the Invention

[0003] In view of this, embodiments of this application are committed to providing a display module, a preparation method thereof, and a display device to solve the problems of wide bezels, low reliability, and low electrostatic protection performance of the display module.

[0004] A first aspect of this application provides a display module, including: a display panel including a display area and a bending area located on one side of the display area; a polarizer located on the display side of the display panel, with at least a part of the polarizer located in the display area; a protective layer located on the display side of the display panel, with at least a part of the protective layer located in the bending area, and there is a gap between the protective layer and the polarizer; a first adhesive layer, with at least a part of the first adhesive layer filling the gap.

[0005] In one embodiment, the first adhesive layer covers at least a part of the surface of the protective layer facing away from the display panel; preferably, the width of the first adhesive layer covering the surface of the protective layer facing away from the display panel is greater than 0.055 mm.

[0006] In one embodiment, the first adhesive layer includes a first adhesive part and a second adhesive part in contact with each other. The first adhesive part fills the gap, and the second adhesive part is located in the display area and on the side of the polarizer facing away from the display panel; preferably, the display module further includes a cover plate located on the side of the second adhesive part facing away from the display panel; preferably, the material of the first adhesive layer includes any one of acrylic adhesives, silicone-based UV curable adhesives, or thermosetting adhesives; preferably, the elastic modulus of the first adhesive layer is greater than 300 mpa; preferably, the viscosity of the first adhesive layer is less than 1000 cps; preferably, the first adhesive part further includes graphene or nanosilver wires.

[0007] In one embodiment, the display module further includes a second adhesive layer located on the side of the polarizer facing away from the display panel. The second adhesive layer is bonded to the first adhesive layer. The materials of the second adhesive layer and the first adhesive layer are different. Preferably, the second adhesive layer covers the surface of the polarizer facing away from the display panel. Preferably, the material of the second adhesive layer includes acrylic adhesive or silicone-based UV curable adhesive. Preferably, the elastic modulus of the second adhesive layer is less than 0.1 mpa. Preferably, the transmittance of the second adhesive layer is greater than 99%. Preferably, the display module further includes a cover plate located on the side of the second adhesive layer facing away from the polarizer.

[0008] In one embodiment, the display module further includes a support layer located on the side of the display panel facing away from the polarizer. The support layer has a first opening, and the orthographic projection of the first opening on the display panel is located within the orthographic projection of the protective layer on the display panel. Preferably, the distance between the orthographic projection of the first opening on the display panel near the edge of the display area and the orthographic projection of the first adhesive layer on the display panel far from the edge of the display area is greater than 0.055 mm.

[0009] In one embodiment, the material of the protective layer includes a base material and an adhesive material. Preferably, the base material of the protective layer includes polyethylene terephthalate. Preferably, the adhesive material of the protective layer includes any one or more of acrylic adhesive, epoxy-based UV curable adhesive, or thermosetting adhesive.

[0010] In one embodiment, the interval is greater than 0.075 mm.

[0011] The second aspect of the present application provides a method for manufacturing a display module, including: providing a display panel, where the display panel includes a display area and a bending area located on one side of the display area; attaching a protective layer to the display side of the display panel; removing a part of the protective layer near the display area, and at least part of the protective layer is located in the bending area.

[0012] In one embodiment, after the step of removing a part of the protective layer near the display area, the method further includes: attaching a polarizer to the display side of the display panel, at least part of the polarizer is located in the display area, and there is an interval between the polarizer and the protective layer; preparing a first adhesive layer on the display side of the display panel, and at least part of the first adhesive layer fills the interval. Preferably, after the step of preparing the first adhesive layer on the display side of the display panel, the method further includes: preparing a second adhesive layer on the side of the polarizer facing away from the display panel, and the second adhesive layer is bonded to the first adhesive layer; attaching a cover plate to the side of the second adhesive layer facing away from the polarizer. Preferably, before the step of attaching the protective layer to the display side of the display panel, the method further includes: attaching a support layer to the encapsulation side of the display panel, and the support layer has a first opening located in the bending area.

[0013] The third aspect of the present application provides a display device, including: the display module mentioned in any of the above embodiments.

[0014] The technical solution provided by this application provides protection by arranging a protective layer on the same layer as the polarizer in the bending area, and filling a first adhesive layer in the gap between the protective layer and the polarizer. On the one hand, the formation of a climbing area caused by coating protective glue is avoided, which is beneficial to narrowing the border of the display module; on the other hand, the first adhesive layer filling the gap can enhance the adhesion between the protective layer and the polarizer, making the entire display module more robust when subjected to external physical impacts or pressures, not easily delaminating or falling off, and improving the reliability of the display module; further, the first adhesive layer filling the gap can play an anti-static role, thereby improving the anti-static performance of the display module. Therefore, the technical solution provided by this application can reduce the border width of the display module, improve the reliability and electrostatic protection performance of the display module, and is beneficial to improving the user experience.

[0015] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of this application, nor is it used to limit the scope of this application. Other features of this application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 The figure shows a schematic structural diagram of a display module provided by an embodiment of this application.

[0018] Figure 2 The figure shows a schematic structural diagram of a display module provided by another embodiment of this application.

[0019] Figure 3 The figure shows a schematic structural diagram of a display module provided by yet another embodiment of this application.

[0020] Figure 4 The figure shows a schematic structural diagram of a display module provided by yet another embodiment of this application.

[0021] Figure 5 The figure shows a schematic structural diagram of a display module provided by yet another embodiment of this application.

[0022] Figure 6 The figure shows a schematic flowchart of a method for manufacturing a display module provided by an embodiment of this application.

[0023] Figures 7a - 7h The figure shows a schematic structural diagram of an intermediate product of a display module provided by an embodiment of this application.

[0024] Figure 8 The figure shows a schematic flow chart of a method for manufacturing a display module provided by another embodiment of the present application.

[0025] Figure 9 The figure shows a schematic flow chart of a method for manufacturing a display module provided by still another embodiment of the present application. Detailed implementation manners

[0026] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0027] As mentioned in the background art, in the related art, during the production of a flexible display module, it is necessary to coat a protective glue in the bending area. However, through research by the inventor, it is found that due to the siphon effect of the polarizer, a climbing area will be formed at the edge of the polarizer for the protective glue, which requires a large space to be reserved for the opening from the polarizer to the support film, restricting the narrowing of the lower border.

[0028] In view of this, the present application provides a display module, a method for manufacturing the same, and a display device, so as to solve the problems of wide border, low reliability, and low electrostatic protection performance of the display module.

[0029] Figure 1 The figure shows a schematic structural diagram of a display module provided by an embodiment of the present application. As Figure 1 shown, the display module includes: a display panel 101, including a display area 1011 and a bending area 1012 located on one side of the display area 1011; a polarizer 102, located on the display side of the display panel 101, and at least a part of the polarizer 102 is located in the display area 1011; a protective layer 103, located on the display side of the display panel 101, and at least a part of the protective layer 103 is located in the bending area 1012, and there is a gap d3 between the protective layer 103 and the polarizer 102; a first glue layer 104, and at least a part of the first glue layer 104 fills the gap d3.

[0030] Specifically, the display area 1011 of the display panel 101 is used to display images. By setting the bending area 1012 in the non-display area 1011, the bending of the display panel 101 can be achieved, reducing the border area of the display panel 101. Exemplarily, the display panel 101 is a flexible display panel. A polarizer 102 is disposed on the display side of the display panel 101, mainly for filtering polarized light in a specific direction to enhance the display contrast and avoid reflection. At least part of the polarizer 102 is located in the display area 1011 to achieve its function. During the manufacturing process, the polarizer 102 may slightly exceed the actual display area 1011 for easy assembly and to prevent light leakage from the edges. The protective layer 103 covers the display side of the display panel 101, and at least part of the protective layer 103 is located in the bending area 1012 to protect the bending area 1012 and improve the reliability of the display panel 101. The gap d3 between the protective layer 103 and the polarizer 102 is filled with the first adhesive layer 104. When the display panel 101 is bent, the protective layer 103 is not easily peeled off, improving the reliability of the display module; further, filling the gap d3 with the first adhesive layer 104 can play an anti-static role, helping to guide or disperse static electricity, thereby improving the anti-static ability of the display module.

[0031] In the related art, a protective glue is coated in the bending area 1012, which forms a ramp area at the edge of the polarizer 102, so that the bending area 1012 must be set away from the ramp area, thus widening the border of the display module.

[0032] The technical solution provided in this embodiment provides protection by disposing the protective layer 103 on the same layer as the polarizer 102 in the bending area 1012, and filling the gap d3 between the protective layer 103 and the polarizer 102 with the first adhesive layer 104. On the one hand, the ramp area formed by coating the protective glue is avoided, which is beneficial to narrowing the border of the display module; on the other hand, the first adhesive layer 104 filling the gap d3 can enhance the adhesion between the protective layer 103 and the polarizer 102, making the entire display module more robust when subjected to external physical impacts or pressures, not easily delaminating or falling off, and improving the reliability of the display module; further, filling the gap d3 with the first adhesive layer 104 can play an anti-static role, thereby improving the anti-static performance of the display module. Therefore, the technical solution of this embodiment can reduce the border width of the display module, improve the reliability and static protection performance of the display module, and is beneficial to improving the user experience.

[0033] Figure 2 The following shows a schematic structural diagram of a display module provided by another embodiment of the present application. As Figure 2 shown, the first adhesive layer 104 covers at least part of the surface of the protective layer 103 facing away from the display panel 101; preferably, the width d1 of the first adhesive layer 104 covering the surface of the protective layer 103 facing away from the display panel 101 is greater than 0.055 mm.

[0034] Specifically, the first adhesive layer 104 not only fills the gap d3 between the protective layer 103 and the polarizer 102, but also extends to one side of the protective layer 103 to cover part or all of the surface facing away from the display panel 101. With this arrangement, the contact area between the first adhesive layer 104 and the protective layer 103 is increased, thereby enhancing the bonding strength between the two. This helps to maintain the stability of each layer structure during the bending process of the display panel 101 and prevent delamination or peeling. Moreover, the first adhesive layer 104 covering the back surface of the protective layer 103 can further provide protection for the display module, preventing moisture, oxygen and other harmful substances from invading the interior of the display module through the bending area 1012 and protecting the internal electronic components. Preferably, the covering width d1 of the first adhesive layer 104 on the surface of the protective layer 103 facing away from the display panel 101 is greater than 0.055 mm to ensure the bonding strength and stability of the first adhesive layer 104, thereby further improving the reliability of the display module. Exemplarily, the covering width d1 of the first adhesive layer 104 on the surface of the protective layer 103 facing away from the display panel 101 can be 0.06 mm, 0.07 mm or 0.08 mm.

[0035] In this embodiment, by arranging the first adhesive layer 104 to cover at least part of the surface of the protective layer 103 facing away from the display panel 101 and giving the preferred covering width range, it is beneficial to further improve the reliability of the display module.

[0036] Figure 3 The following shows a schematic structural diagram of a display module provided by another embodiment of the present application. As Figure 3 shown, the first adhesive layer 104 includes a first adhesive portion 1041 and a second adhesive portion 1042 in contact with each other. The first adhesive portion 1041 fills the gap d3, and the second adhesive portion 1042 is located in the display area 1011 and on the side of the polarizer 102 facing away from the display panel 101; preferably, the display module further includes a cover plate 105 located on the side of the second adhesive portion 1042 facing away from the display panel 101; preferably, the material of the first adhesive layer 104 includes any one of acrylic adhesives, silicone-based UV curable adhesives or thermosetting adhesives; preferably, the elastic modulus of the first adhesive layer 104 is greater than 300 mpa; preferably, the viscosity of the first adhesive layer 104 is less than 1000 cps; preferably, the first adhesive portion 1041 further includes graphene or silver nanowires.

[0037] Specifically, the first adhesive layer 104 includes a first adhesive portion 1041 and a second adhesive portion 1042. The first adhesive portion 1041 is used to fill the gap d3 between the protective layer 103 and the polarizer 102. The second adhesive portion 1042 is attached to the side of the polarizer 102 facing away from the display panel 101 and is used to bond the polarizer 102 to other components or film layers in the display module. Preferably, refer to Figure 3, the second adhesive part 1042 is used to bond the polarizer 102 and the cover plate 105, further protecting the display module. The opposite surfaces of the first adhesive part 1041 and the second adhesive part 1042 are bonded.

[0038] The material of the first adhesive layer 104 can be selected as an acrylic adhesive. The acrylic adhesive has excellent initial tack and final bonding strength, and can provide a strong bonding effect. Moreover, the acrylic adhesive is easy to coat and operate, cures quickly, and has good transparency, without affecting the display effect.

[0039] The material of the first adhesive layer 104 can also be selected as a silicone-based UV curable adhesive. The silicone-based UV curable adhesive contains a siloxane structure and cures through ultraviolet irradiation. After curing, it can provide excellent bonding strength and is suitable for a variety of substrates. The silicone-based UV curable adhesive has good heat resistance, chemical resistance, and weather resistance, cures quickly, and has good flexibility and impact resistance. It can also prevent moisture and mildew.

[0040] The material of the first adhesive layer 104 can also be selected as a thermosetting adhesive. The thermosetting adhesive can be epoxy resin, polyurethane or other polymer materials, and cures through heating. The cured thermosetting adhesive has high bonding strength and stability, is not easily affected by heat or chemicals, and has excellent durability. Moreover, the volume shrinkage of the thermosetting adhesive during the curing process is small, making it suitable for precision bonding.

[0041] Preferably, the elastic modulus of the first adhesive layer 104 is greater than 300 MPa, having a relatively high hardness and being able to better resist deformation. The viscosity of the first adhesive layer 104 is less than 1000 cps, facilitating coating and shaping.

[0042] Preferably, the first adhesive part 1041 can also include graphene or nanosilver wires, which can improve the electrical conductivity, thermal conductivity, and mechanical properties of the first adhesive layer 104.

[0043] In this embodiment, by partitioning the design of the first adhesive part 1041 and the second adhesive part 1042, the first adhesive layer 104 can perform different functions in different regions. Setting the cover plate 105 increases the environmental tolerance and mechanical strength of the display module. Selecting an acrylic adhesive, a silicone-based UV curable adhesive, or a thermosetting adhesive ensures the bonding strength and durability of the first adhesive layer 104, adapting to different manufacturing processes and application requirements. The preferred elastic modulus range and viscosity range of the first adhesive layer 104 are given, thereby further improving the reliability of the display module.

[0044] Figure 4 The following is a schematic structural diagram of a display module provided by another embodiment of the present application. As Figure 4As shown in the figure, the display module further includes a second adhesive layer 106, which is located on the side of the polarizer 102 facing away from the display panel 101, and the second adhesive layer 106 is bonded to the first adhesive layer 104; the materials of the second adhesive layer and the first adhesive layer are different; preferably, the second adhesive layer 106 covers the surface of the polarizer 102 facing away from the display panel 101; preferably, the material of the second adhesive layer 106 includes acrylic adhesive or silicone-based UV curable adhesive; preferably, the elastic modulus of the second adhesive layer 106 is less than 0.1 mpa; preferably, the transmittance of the second adhesive layer 106 is greater than 99%; preferably, the display module further includes a cover plate 105, which is located on the side of the second adhesive layer 106 facing away from the polarizer 102.

[0045] Specifically, referring to Figure 4 , the difference between this embodiment and the above embodiment is that the first adhesive layer 104 fills the interval d3, and the second adhesive layer 106 is provided to fix the polarizer 102 and the cover plate 105. The second adhesive layer 106 covers the surface of the polarizer 102 facing away from the display panel 101 to form a uniform bonding layer. The first adhesive layer 104 and the second adhesive layer 106 are bonded, and their bonding interface is located within the bending area 1012, that is, the first adhesive layer 104 does not extend into the display area 1011. The materials of the first adhesive layer 104 and the second adhesive layer 106 are different. The material of the second adhesive layer 106 can be selected from acrylic adhesive or silicone-based UV curable adhesive, and these materials usually have good transparency and bonding performance.

[0046] Preferably, the elastic modulus of the second adhesive layer 106 is less than 0.1 MPa, which can better adapt to the bending and deformation of the display module. The transmittance of the second adhesive layer 106 is greater than 99%, ensuring that the second adhesive layer 106 will not significantly affect the optical performance of the display panel 101.

[0047] In this embodiment, by setting the first adhesive layer 104 and the second adhesive layer 106 with different materials in different regions, the preferred elastic modulus range and transmittance of the second adhesive layer 106 are given, ensuring the high definition and brightness of the display module, thereby further improving the reliability of the display module.

[0048] Figure 5 The figure shows a schematic structural diagram of a display module provided by another embodiment of the present application. As Figure 5 shown, the display module further includes a support layer 107, which is located on the side of the display panel 101 facing away from the polarizer 102. The support layer 107 has a first opening 1071, and the orthographic projection of the first opening 1071 on the display panel 101 is located within the orthographic projection of the protective layer 103 on the display panel 101; preferably, the distance d2 between the edge of the orthographic projection of the first opening 1071 on the display panel 101 close to the edge of the display area 1011 and the edge of the orthographic projection of the first adhesive layer 104 on the display panel 101 far from the edge of the display area 1011 is greater than 0.055 mm.

[0049] Specifically, a support layer 107 is provided on the side of the display panel 101 facing away from the polarizer 102, that is, on the backplane side of the display panel 101, which can enhance the overall strength and stability of the display module. A first opening 1071 is provided in the portion of the support layer 107 located in the bending area 1012, and its orthographic projection on the display panel 101 is located within the orthographic projection of the protective layer 103 on the display panel 101, ensuring the protective effect of the protective layer 103 on the bending area 1012.

[0050] Preferably, the distance d2 between the edge of the orthographic projection of the first opening 1071 on the display panel 101 close to the edge of the display area 1011 and the edge of the orthographic projection of the first adhesive layer 104 on the display panel 101 far from the display area 1011 is greater than 0.055 mm, ensuring that the first adhesive layer 104 does not enter the first opening 1071 after the display panel 101 is bent. Exemplarily, the distance d2 between the edge of the orthographic projection of the first opening 1071 on the display panel 101 close to the edge of the display area 1011 and the edge of the orthographic projection of the first adhesive layer 104 on the display panel 101 far from the display area 1011 can be 0.06 mm, 0.065 mm or 0.07 mm.

[0051] In this embodiment, providing support for the display module by setting the support layer 107 helps to resist external force impacts and improve the durability of the display module; defining the position of the first opening 1071 to avoid affecting the protective effect of the protective layer 103 and preventing the first adhesive layer 104 from entering the first opening 1071 further improves the reliability of the display module.

[0052] In one embodiment, the material of the protective layer 103 includes a substrate and an adhesive material; preferably, the substrate of the protective layer 103 includes polyethylene terephthalate; preferably, the adhesive material of the protective layer 103 includes any one or more of acrylic adhesives, epoxy-based photo-curing adhesives or thermosetting adhesives.

[0053] Specifically, the protective layer 103 is composed of two parts: a substrate and an adhesive material. The substrate is the main load-bearing part of the protective layer 103, while the adhesive material is used to bond the protective layer 103 to the display panel 101. The substrate of the protective layer 103 is preferably polyethylene terephthalate (PET), a commonly used plastic material that is widely used due to its good mechanical properties, heat resistance and transparency. The adhesive material of the protective layer 103 can be selected from acrylic adhesives, epoxy-based photo-curing adhesives or thermosetting adhesives, etc. These adhesives have good bonding properties, chemical resistance and environmental resistance.

[0054] In this embodiment, some preferred materials for the protective layer 103 are provided. The protective layer 103 uses PET as the base material, which can provide good mechanical strength and impact resistance, can effectively protect the display panel 101 from being damaged during the bending process, and the PET material has good transparency and will not affect the display effect of the display panel 101. The protective layer 103 uses acrylic adhesives, epoxy-based photo-curing adhesives or thermosetting adhesives, etc. as the adhesive materials, which can ensure the firm bonding between the protective layer 103 and the display panel 101 or other layers. Further, the combination of the PET base material and the adhesive material of the protective layer 103 can meet the bending requirements of the display module, which is beneficial to improving the reliability of the display module.

[0055] In one embodiment, referring to Figure 5 , the interval d3 is greater than 0.075 mm.

[0056] Specifically, the interval d3 between the protective layer 103 and the polarizer 102 is set to be greater than 0.075 mm to ensure that there is no interference between the protective layer 103 and the polarizer 102, and it is also beneficial to the coating and curing of the first adhesive layer 104. Exemplarily, the interval d3 can be set to 0.078 mm, 0.08 mm or 0.082 mm.

[0057] Referring to Figure 5 , on the basis of the above embodiments, exemplarily, the distance d4 between the edge of the orthographic projection of the protective layer 103 on the display panel 101 close to the display area 1011 and the edge of the first opening 1071 close to the display area 1011 is greater than 0.11 mm. Therefore, the minimum distance between the edge of the orthographic projection of the polarizer 102 on the display panel 101 close to the bending area 1012 and the edge of the first opening 1071 close to the display area 1011 can be 0.185 mm. In the prior art, this distance is usually set to 0.26 mm. The technical solution provided in this embodiment reduces this distance by 29% (0.075 mm), so it is beneficial to further reduce the frame width of the display module.

[0058] Figure 6 The figure shows a schematic flow chart of a method for manufacturing a display module provided by an embodiment of the present application. This manufacturing method is applicable to manufacturing a display module. Figures 7a - 7h The figure shows a schematic structural diagram of an intermediate product of a display module provided by an embodiment of the present application. As Figure 6 shown, this manufacturing method includes:

[0059] S110, providing a display panel, the display panel including a display area and a bending area located on one side of the display area.

[0060] Specifically, referring to Figure 7a, the display panel 101 can be a flexible display panel 101. The flexible display panel 101 is usually made of flexible substrates (such as polyimide) and organic light-emitting diodes and other materials.

[0061] S120, attach a protective layer to the display side of the display panel.

[0062] Specifically, refer to Figure 7c , place the protective layer 103 on the display side of the display panel 101, position the protective layer 103 in the bending area 1012 of the display panel 101, and roll a pressing head (usually a hard and smooth-surfaced roller) on the protective layer 103, applying appropriate pressure, which can help remove air bubbles and make the attachment between the protective layer 103 and the surface of the display panel 101 closer.

[0063] S130, remove a part of the protective layer near the display area, and at least part of the protective layer is located in the bending area.

[0064] Specifically, refer to Figure 7d , use an infrared laser to cut and remove a part of the protective layer 103 near the display area 1011, which is beneficial to reducing the border width of the display module, and after cutting, it is necessary to ensure that at least part of the protective layer 103 is located in the bending area 1012. Exemplarily, the precision requirement for laser cutting is relatively high, and the deviation of the cutting edge is less than 0.05 mm. The heat affected zone (HAZ) generated during laser cutting is less than 0.07 mm, and it will not cause significant impact on the structure or performance of the materials near the cutting edge. Optionally, after removing a part of the protective layer 103 near the display area 1011, the protective layer 103 can also be tackified by UV or hot pressing to enhance the tightness of the attachment between the protective layer 103 and the display panel 101.

[0065] The technical solution provided by this application attaches the protective layer 103 to the display side of the display panel 101 and then removes a part of the protective layer 103 near the display area 1011, ensuring effective protection for the bending area 1012 of the display module and being able to reduce the border width of the display module, which is beneficial to improving the user experience.

[0066] Figure 8 The following shows a schematic flow chart of a method for manufacturing a display module provided by another embodiment of this application. This manufacturing method is applicable to manufacturing a display module. As Figure 8 shown, preferably, after the step of removing a part of the protective layer 103 near the display area 1011, the manufacturing method further includes:

[0067] S210, attach a polarizer to the display side of the display panel, at least part of the polarizer is located in the display area, and there is a gap between the polarizer and the protective layer.

[0068] Specifically, refer toFigure 7e , perform one-sided alignment with the edge of the protective layer 103 close to the display area 1011, and attach the polarizer 102 to the display side of the display panel 101 to ensure that the error in the attachment position of the polarizer 102 is less than 0.05 mm.

[0069] S220, prepare a first adhesive layer on the display side of the display panel, and at least part of the first adhesive layer fills the gap.

[0070] Specifically, referring to Figure 7f , the first adhesive layer 104 can be prepared by methods such as dispensing, inkjet printing, or coating to ensure the uniformity and accuracy of the first adhesive layer 104.

[0071] Preferably, after the step of preparing the first adhesive layer 104 on the display side of the display panel 101, it further includes:

[0072] S230, prepare a second adhesive layer on the side of the polarizer facing away from the display panel, and the second adhesive layer is bonded to the first adhesive layer.

[0073] Specifically, referring to Figure 7g , the second adhesive layer 106 can be prepared by methods such as dispensing, inkjet printing, or coating to ensure the uniformity and accuracy of the second adhesive layer 106.

[0074] S240, attach a cover plate to the side of the second adhesive layer facing away from the polarizer.

[0075] Specifically, referring to Figure 7h , after the first adhesive layer 104 and / or the second adhesive layer 106 is cured, attach the cover plate 105 to the side of the first adhesive layer 104 and / or the second adhesive layer 106 facing away from the polarizer 102.

[0076] The technical solution of this embodiment prepares the polarizer 102, the first adhesive layer 104, the second adhesive layer 106, and the cover plate 105 layer by layer, further improving the reliability and antistatic performance of the display module.

[0077] Figure 9 The following shows a schematic flowchart of a method for manufacturing a display module provided by another embodiment of the present application. This manufacturing method is applicable to manufacturing a display module. As Figure 9 shown, preferably, before the step of attaching the protective layer 103 to the display side of the display panel 101, it further includes:

[0078] S111, attach a support layer to the encapsulation side of the display panel, and the support layer has a first opening, and the first opening is located in the bending area.

[0079] Specifically, referring to Figure 7b, a support layer 107 is attached to the encapsulation side of the display panel 101 to provide support for the display module. Optionally, after attaching the support layer 107, a composite copper foil can also be attached to the side of the support layer 107 facing away from the display panel 101. The composite copper foil is located on the side of the first opening 1071 close to the display area 1011 to further enhance the support force, thereby facilitating further improvement of the reliability of the display module.

[0080] An embodiment of the present application also provides a display device, including: the display module mentioned in any of the above embodiments. The display device has the beneficial effects of the display module mentioned in any of the above embodiments, and its technical principle and the resulting effects are similar, which will not be elaborated here.

[0081] The above-mentioned display module can be applied to a display device, which can be, for example, a mobile terminal, a tablet computer, a computer monitor, a television, a wearable device, or an information inquiry machine and other products or components.

[0082] It should be understood that various forms of the processes shown above can be used, steps can be reordered, added, or deleted. For example, the steps described in this application can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of this application can be achieved, which will not be limited herein.

[0083] The above specific implementation manners do not constitute a limitation to the protection scope of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A display module, characterized in that: include: The display panel comprises a display area and a bending area located at one side of the display area; A polarizer, located on the display side of the display panel, at least a portion of the polarizer is located in the display area; A protective layer, located on a display side of the display panel, at least a portion of the protective layer is located in the bending area, and there is a gap between the protective layer and the polarizer; A first glue layer, at least a portion of the first glue layer fills the space.

2. The display module according to claim 1, characterized in that: The first adhesive layer covers at least a portion of the surface of the protective layer away from the display panel; Preferably, the width of the first adhesive layer covering the surface of the protective layer away from the display panel is greater than 0.055 mm.

3. The display module according to claim 2, characterized in that: The first adhesive layer includes a first adhesive portion and a second adhesive portion in contact with each other, the first adhesive portion fills the gap, and the second adhesive portion is located in the display area and on a side of the polarizer away from the display panel; Preferably, the display module further comprises a cover plate, which is located on a side of the second adhesive portion away from the display panel; Preferably, the material of the first adhesive layer includes any one of acrylic adhesive, silicone UV light-curing adhesive or thermosetting adhesive; Preferably, the elastic modulus of the first adhesive layer is greater than 300 MPa; Preferably, the viscosity of the first adhesive layer is less than 1000 cps; Preferably, the first adhesive part further includes graphene or nano silver wire.

4. The display module according to claim 2, characterized in that: It also includes a second adhesive layer, which is located on a side of the polarizer away from the display panel, and the second adhesive layer is bonded to the first adhesive layer; the second adhesive layer and the first adhesive layer are made of different materials; Preferably, the second adhesive layer covers the surface of the polarizer facing away from the display panel; Preferably, the material of the second adhesive layer includes acrylic adhesive or silicone UV light-curing adhesive; Preferably, the elastic modulus of the second adhesive layer is less than 0.1 MPa; Preferably, the transmittance of the second adhesive layer is greater than 99%; Preferably, the display module further comprises a cover plate located on a side of the second adhesive layer away from the polarizer.

5. The display module according to claim 1, characterized in that: It also includes a support layer, which is located on a side of the display panel away from the polarizer, the support layer having a first opening, and an orthographic projection of the first opening on the display panel is located within an orthographic projection of the protection layer on the display panel; Preferably, a distance between an edge of an orthographic projection of the first opening on the display panel close to the display area and an edge of an orthographic projection of the first adhesive layer on the display panel away from the display area is greater than 0.055 mm.

6. The display module according to claim 1, characterized in that: The materials of the protective layer include a base material and a glue material; Preferably, the substrate of the protective layer comprises polyethylene terephthalate; Preferably, the adhesive material of the protective layer includes any one or more of acrylic adhesive, epoxy light-curing adhesive or thermosetting adhesive.

7. The display module according to claim 1, characterized in that: The interval is greater than 0.075 mm.

8. A method for preparing a display module, characterized in that: include: Providing a display panel, the display panel comprising a display area and a bending area located on one side of the display area; Laminating a protective layer on the display side of the display panel; A portion of the protection layer close to the display area is removed, and at least a portion of the protection layer is located in the bending area.

9. The preparation method according to claim 8, characterized in that: After the step of removing the portion of the protective layer close to the display area, the method further includes: A polarizer is attached to the display side of the display panel, at least a portion of the polarizer is located in the display area, and there is a gap between the polarizer and the protective layer; Preparing a first glue layer on the display side of the display panel, wherein at least a portion of the first glue layer fills the gap; Preferably, after the step of preparing the first adhesive layer on the display side of the display panel, the method further includes: A second adhesive layer is prepared on a side of the polarizer away from the display panel, wherein the second adhesive layer is bonded to the first adhesive layer; Laminating a cover plate on a side of the second adhesive layer facing away from the polarizer; Preferably, before the step of laminating the protective layer on the display side of the display panel, the method further comprises: A supporting layer is attached to the packaging side of the display panel, wherein the supporting layer has a first opening, and the first opening is located in the bending area.

10. A display device, characterized in that: include: The display module according to any one of claims 1 to 8.

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