Display module, manufacturing method thereof and display device

Abstract

The invention provides a display module, a manufacturing method thereof and a display device.The display module comprises a display panel, a cover plate and a rubber frame; the cover plate is located on one side of a light-emitting face of the display panel, and the edge of the orthographic projection of the display panel on the cover plate is arranged in an inward-retracting mode relative to the edge of the cover plate. The rubber frame is arranged at least around the edge of the orthographic projection of the display panel on the cover plate, and the edge of the rubber frame is arranged in an inward shrinkage mode relative to the edge of the cover plate.

Description

Technical Field

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

[0002] Currently, with the rapid development of the organic light emitting diode (OLED) display industry, narrowing the frame has become a trend in display devices in order to obtain a larger screen-to-body ratio and ensure a good visual experience. Summary of the Invention

[0003] The present invention provides a display module, a manufacturing method thereof, and a display device. The relevant technical solutions are as follows:

[0004] In a first aspect, an embodiment of the present invention provides a display module, comprising:

[0005] Display panel, cover plate and plastic frame;

[0006] In which, the cover plate is located on the light-emitting surface side of the display panel, and the edge of the orthographic projection of the display panel on the cover plate is set inward compared to the edge of the cover plate; the plastic frame is set at least around the edge of the orthographic projection of the display panel on the cover plate, and the edge of the plastic frame is set inward compared to the edge of the cover plate.

[0007] In a possible implementation, the side wall of the plastic frame is inclined relative to a plane perpendicular to the plane where the cover plate is located.

[0008] In a possible implementation, an angle between the side wall of the plastic frame and a plane perpendicular to the plane where the cover plate is located is an acute angle.

[0009] In a possible implementation, the side wall of the plastic frame is arranged parallel to a plane perpendicular to the plane where the cover plate is located.

[0010] In a possible implementation, the side of the plastic frame facing away from the cover plate is flush with each other.

[0011] In one possible implementation, the display panel includes a display area and a binding area located on one side of the display area, the display panel includes a flat portion located in the display area, and a bent portion and a fixed portion located in the binding area, the flat portion, the bent portion and the fixed portion are connected in sequence, and the flat portion and the fixed portion extend in the same direction compared to the bent portion, and the side of the bent portion facing away from the plastic frame and the edge corresponding to the display panel form a hollow structure.

[0012] In a possible implementation, magnetorheological fluid is provided on at least a portion of the surface of the plastic frame except the surface in contact with the display panel.

[0013] In one possible implementation, the display module also includes a heat sink on the side facing away from the light-emitting surface of the display panel, the edge of the heat sink is set inward compared to the edge of the cover plate, and the orthographic projection of the edge of the heat sink on the cover plate completely falls within the area of ​​the orthographic projection of the rubber frame on the cover plate.

[0014] In one possible implementation, the edge of the display panel is set inward compared to the cover plate, and the display panel has a flat portion and a curved portion surrounding the flat portion; the display module also includes a heat sink on the side away from the light-emitting surface of the display panel, and the edge of the heat sink is set inward compared to the edge of the display panel; the orthographic projection of the edge of the heat sink on the cover plate completely falls within the area of ​​the orthographic projection of the rubber frame on the cover plate.

[0015] In a possible implementation, the curvature of a surface of the plastic frame facing away from the cover plate is the same as the curvature of the curved portion.

[0016] In a possible implementation, the side wall of the plastic frame close to the edge of the cover plate is perpendicular to the tangent plane of the curved portion at the corresponding position, and the side wall of the plastic frame away from the edge of the cover plate is perpendicular to the tangent plane of the planar portion.

[0017] In a second aspect, an embodiment of the present invention further provides a method for manufacturing a display module, comprising:

[0018] Obtaining a bonding structure comprising a cover plate and a display panel, wherein the cover plate is located on a side of a light-emitting surface of the display panel, and an edge of an orthographic projection of the display panel on the cover plate is set back from an edge of the cover plate;

[0019] An electromagnet structure is provided on at least one side of the laminating structure;

[0020] Under the action of the electromagnetic attraction of the electromagnet structure, a first dam body formed of magnetorheological fluid is accumulated in an area near the end of the display panel, and a second dam body formed of magnetorheological fluid is accumulated at the edge of the cover plate, wherein an accommodating space is formed between the first dam body and the second dam body;

[0021] A plastic frame is formed in the accommodating space, wherein the plastic frame is at least arranged around an edge of an orthographic projection of the display panel on the cover plate, and an edge of the plastic frame is set inward compared to an edge of the cover plate;

[0022] The first dam and the second dam are removed to obtain a display module including the plastic frame, the cover plate and the display panel.

[0023] In a possible implementation, a first dam formed of magnetorheological fluid is deposited in an area near an end of the display panel, and a second dam formed of magnetorheological fluid is deposited at an edge of the cover plate, including:

[0024] A first electromagnet unit and a second electromagnet unit are placed on a side of the cover plate away from the display panel, wherein the first electromagnet unit is arranged at an edge of the display panel relative to the orthographic projection of the cover plate, and the second electromagnet unit is arranged at an edge of the cover plate;

[0025] A first fluid is deposited at a position corresponding to the first electromagnet unit and a second fluid is deposited at a position corresponding to the second electromagnet unit through an air pressure valve loaded with magnetorheological fluid;

[0026] Under the action of the electromagnetic attraction of the first electromagnet unit, the first fluid is shaped into a first dam body, and under the action of the electromagnetic attraction of the second electromagnet unit, the second fluid is shaped into a second dam body; wherein, the first dam body is located in the area near the end of the display panel, the second dam body is located at the edge of the cover plate, and the distance between the first electromagnet unit and the first dam body is greater than the distance between the second electromagnet unit and the second dam body; along the direction approaching the cover plate, the cross-sectional area of ​​the first dam body parallel to the plane where the cover plate is located tends to increase, and the cross-sectional area of ​​the second dam body parallel to the plane where the cover plate is located tends to increase, and the thickness of the first dam body is less than the thickness of the second dam body.

[0027] In a possible implementation, after the first fluid is accumulated at the position corresponding to the first electromagnet unit and the second fluid is accumulated at the position corresponding to the second electromagnet unit through the air pressure valve loaded with the magnetorheological fluid, the method further includes:

[0028] A third electromagnet unit is provided on a side of the first fluid facing away from the cover plate, and a fourth electromagnet unit is provided on a side of the second fluid facing away from the cover plate. The first fluid is shaped into a first dam body by the electromagnetic attraction of the first electromagnet unit and the third electromagnet unit, and the second fluid is shaped into a second dam body by the electromagnetic attraction of the second electromagnet unit and the fourth electromagnet unit; along the direction approaching the cover plate, the cross-sectional area of ​​the first dam body parallel to the plane where the cover plate is located is equal, and the cross-sectional area of ​​the second dam body parallel to the plane where the cover plate is located is equal.

[0029] In a possible implementation, the first dam body and the second dam body are arranged flush or non-flush on a side facing away from the cover plate.

[0030] In one possible implementation, the first electromagnet unit and the third electromagnet unit are respectively at equal distances from the first dam body, the second electromagnet unit and the fourth electromagnet unit are respectively at equal distances from the second dam body, and the distance between the first electromagnet unit and the first dam body is greater than the distance between the second electromagnet unit and the second dam body.

[0031] In a possible implementation, forming a plastic frame in the accommodating space includes:

[0032] Using printing technology, low-viscosity glue is filled into the accommodating space, where the viscosity of the low-viscosity glue ranges from 0 cps to 200 cps;

[0033] The low-viscosity glue is cured by using a 370nm LED cold light source to form a glue frame, wherein the glue frame is flush with a side facing away from the cover plate.

[0034] In a possible implementation, removing the first dam body and the second dam body includes:

[0035] A fifth electromagnet unit is provided on a side of the first dam body facing away from the plastic frame, and a sixth electromagnet unit is provided on a side of the second dam body facing away from the plastic frame, and the first, second, third, and fourth electromagnet units are removed; wherein a first recovery film is provided on a surface of the fifth electromagnet unit close to the first dam body, and a second recovery film is provided on a surface of the sixth electromagnet unit close to the second dam body; wherein the first recovery film and the second recovery film are both provided with a plurality of nano-scale micropores;

[0036] The magnetorheological fluid corresponding to the first dam body is recovered by using the first recovery film, and the magnetorheological fluid corresponding to the second dam body is recovered by using the second recovery film.

[0037] In a possible implementation, the magnetorheological fluid is made of an oily material.

[0038] In a possible implementation, after removing the first dam body and the second dam body, the method further includes:

[0039] The surface of the rubber frame is cleaned using a pen-type plasma device to remove the magnetorheological fluid remaining on the surface of the rubber frame, thereby obtaining a cleaned rubber frame.

[0040] In a third aspect, an embodiment of the present invention provides a display device, including:

[0041] A display module as described in any one of the above items, and a middle frame overlapped with the plastic frame in the display module.

[0042] The beneficial effects of the present invention are as follows:

[0043] An embodiment of the present invention provides a display module, a manufacturing method thereof, and a display device, wherein the display module includes a display panel, a cover plate, and a plastic frame; the cover plate is located on the light-emitting side of the display panel, the edge of the display panel's orthographic projection on the cover plate is set inward compared to the edge of the cover plate, and the plastic frame is set at least around the edge of the display panel's orthographic projection on the cover plate, and the edge of the plastic frame is set inward compared to the edge of the cover plate. In this way, the plastic frame effectively prevents water and oxygen from corroding the display panel, while improving the anti-drop performance of the display module; subsequently, when the middle frame is placed in the retracted space between the edge of the plastic frame and the edge of the cover plate, the display module can be overlapped with the middle frame through the plastic frame, thereby ensuring the narrow frame design of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic diagram of the entire frame design of a mobile phone product in the related art;

[0045] Figure 2 A schematic diagram of a top view of a display module provided in an embodiment of the present invention;

[0046] Figure 3 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by MM;

[0047] Figure 4 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by NN;

[0048] Figure 5 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by MM;

[0049] Figure 6 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by NN;

[0050] Figure 7 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by MM;

[0051] Figure 8 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction indicated by NN;

[0052] Figure 9 A schematic diagram of one structure of a display module provided by an embodiment of the present invention;

[0053] Figure 10 A schematic diagram of a structure of a display device provided by an embodiment of the present invention;

[0054] Figure 11 A schematic diagram of a structure of a display device provided by an embodiment of the present invention;

[0055] Figure 12 A flow chart of a method for manufacturing a display module provided by an embodiment of the present invention;

[0056] Figure 13 To adopt Figure 12 The method flow chart shown is a schematic diagram of one of the top views of the display module during the preparation process;

[0057] Figure 14 for Figure 12 A flowchart of one method of step S103;

[0058] Figure 15 For preparation Figure 3 A schematic diagram of one of the manufacturing structures of the display module shown;

[0059] Figure 16 For preparation Figure 8 One of the process flow charts of the display module shown;

[0060] Figure 17 for Figure 12 A flowchart of one method of step S104;

[0061] Figure 18 for Figure 17 One of the process flow charts corresponding to the method flow chart;

[0062] Figure 19 for Figure 12 A flowchart of one method of step S105;

[0063] Figure 20 for Figure 19 A schematic diagram of one of the preparation structures used in the process flow chart;

[0064] Figure 21 for Figure 12 A schematic diagram of a cleaning process after step S105;

[0065] Description of reference numerals:

[0066] 10-display panel; 20-cover plate; 30-plastic frame; 31-side wall of plastic frame; A-display area; B-binding area; 11-flat portion; 12-bending portion; 13-fixing portion; 40-hollow structure; 50-heat sink; 60-plastic layer; 70-flat portion; 80-bending portion; 100-display module; 200-middle frame; 201-first branch; 202-second branch; 300-electromagnet structure; 110-end; 4 00-first dam body; 500-second dam body; 301-first electromagnet unit; 302-second electromagnet unit; 303-third electromagnet unit; 304-fourth electromagnet unit; 305-fifth electromagnet unit; 306-sixth electromagnet unit; 600-air pressure valve; 700-low-viscosity glue; 710-LED cold light source; 800-first recovery film; 900-second recovery film; 910-pen-type plasma device. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. And in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0068] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Inside", "outside", "upper", "lower" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0069] It should be noted that the sizes and shapes of the figures in the accompanying drawings do not reflect the actual scale and are only for the purpose of illustrating the present invention. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions.

[0070] In related technologies, such as Figure 1The figure shows a schematic diagram of the overall bezel design for a mobile phone product. Reference numeral 01 represents the cover plate, reference numeral 02 represents the flexible display panel, and reference numeral 03 represents the overall midframe. In this exemplary embodiment, the overall bezel satisfies the formula: C = a + b, where a represents the distance from the curved section of the flexible display panel to the overall midframe, and b represents the volume between the cover plate and the overall midframe. In this case, the overall bezel is often large, making it unfavorable for a narrow bezel design. Furthermore, the hollow space between the overall midframe and the curved section of the flexible display panel results in relatively poor waterproof and drop-resistant performance.

[0071] A molded polymer component can be formed around the lower side panel of the cover through mold injection molding, achieving a narrow bezel while improving impact resistance. However, this mold injection solution requires a custom mold for each display product. The production process involves mold closing, injection molding, curing, and demolding, and each step requires a mold, making the entire process relatively cumbersome. Moreover, such molds generally have a service life of approximately 100 cycles, making them uneconomical to manufacture and producing in a timely manner, especially in mass production.

[0072] In view of this, embodiments of the present invention provide a display module, a manufacturing method thereof, and a display device, for improving the waterproof and drop-proof performance of the display module while taking into account a narrow frame design.

[0073] Before providing a detailed explanation of the display module, its manufacturing method, and display device provided by the embodiments of the present invention, a brief description of the magnetorheological fluid and electromagnet structure used is provided. Magnetorheological fluid is a suspension composed of micron-sized magnetizable particles dispersed in a mother liquid. In the absence of a magnetic field, the magnetorheological fluid is a Newtonian fluid. However, under the action of a strong magnetic field, the suspended particles change from magnetic neutrality to strong magnetism due to magnetic induction, forming a "chain"-like bridge between the magnetic poles, and then transforming into a macroscopic columnar structure. The electromagnet structure consists of an energized solenoid and an iron core inserted into the energized solenoid. When the iron core is inserted into the energized solenoid, the iron core is magnetized by the magnet of the energized solenoid, and the magnetized iron core also becomes a magnet, exerting a certain attraction on the magnetorheological fluid.

[0074] During the actual manufacturing process, an electromagnet structure is set at the edge of the cover plate and the rear of the display panel. The electromagnet structure magnetizes the magnetorheological fluid, and the magnetorheological fluid loaded in the air pressure valve is accumulated at the corresponding position under the action of the electromagnet's magnetic field. Among them, the electromagnetic attraction of the electromagnet structure to the magnetorheological fluid and the corresponding distance satisfy the formula: F = S * (I * W) 2 / H, where F represents the electromagnetic force, I represents the current in the energized coil, W represents the number of turns in the energized coil, S represents the cross-sectional area of ​​the energized coil, and H represents the distance between the electromagnet structure and the magnetorheological fluid. Thus, when S, I, and W are constants, the electromagnetic force F is negatively correlated with H; thus, the closer the electromagnet structures are, the more magnetorheological fluid accumulates. The effective suction range of a typical electromagnet is within 2 centimeters. If the electromagnet structure attracts objects across a distance, the electromagnetic force loss is significant. For example, with a 1mm gap between the two, the electromagnetic force loss is only 3% to 5% of the electromagnetic force during direct contact.

[0075] like Figure 2 As shown, an embodiment of the present invention provides a display module, which includes:

[0076] Display panel 10, cover plate 20 and plastic frame 30;

[0077] In which, the cover plate 20 is located on the light-emitting surface side of the display panel 10, and the edge of the orthographic projection of the display panel 10 on the cover plate 20 is set inward compared to the edge of the cover plate 20; the plastic frame 30 is set at least around the edge of the orthographic projection of the display panel 10 on the cover plate 20, and the edge of the plastic frame 30 is set inward compared to the edge of the cover plate 20.

[0078] In the specific implementation process, the display module provided by the embodiment of the present invention includes a display panel 10, a cover plate 20 and a plastic frame 30; wherein, the display panel 10 can be a flexible display panel or a rigid display panel, which is not limited here. Moreover, the cover plate 20 is located on the light-emitting side of the display panel 10, and the edge of the positive projection of the display panel 10 on the cover plate 20 is set inward compared to the edge of the cover plate 20. In one exemplary embodiment, at least part of the edge of the display panel 10 is set inward compared to the edge of the cover plate 20. In this way, the cover plate 20 can effectively protect the display panel 10. In addition, the plastic frame 30 is set at least around the edge of the positive projection of the display panel 10 on the cover plate 20, and the edge of the plastic frame 30 is set inward compared to the edge of the cover plate 20. Exemplarily, the distance between the edge of the plastic frame 30 and the edge of the cover plate 20 is greater than or equal to 0.1 mm. In this way, the plastic frame 30 can effectively prevent water and oxygen from corroding the display panel 10 and improve the impact resistance of the display module; when the middle frame 200 is subsequently placed in the retracted space between the edge of the plastic frame 30 and the edge of the cover plate 20, the display module can be overlapped with the middle frame 200 through the plastic frame 30, thereby ensuring the narrow frame design of the display module.

[0079] In the embodiment of the present invention, the plastic frame 30 can be configured in a variety of ways, but is not limited to the following ways.

[0080] In one exemplary embodiment, Figures 3 to 6 As shown, the side wall 31 of the plastic frame 30 is tilted relative to a plane perpendicular to the plane where the cover plate 20 is located.

[0081] In the embodiment of the present invention, the angle between the side wall of the plastic frame 30 and a plane perpendicular to the plane where the cover plate 20 is located is an acute angle.

[0082] Combine Figure 3 and Figure 4 As shown, Figure 3 Shown along Figure 2 One of the cross-sectional structural diagrams in the direction shown in MM is as follows: Figure 4 Shown along Figure 2 A schematic diagram of one of the cross-sectional structures in the direction shown in NN. Figure 3 and Figure 4 In the exemplary embodiment shown, the angle between the side wall 31 of the plastic frame 30 and a plane perpendicular to the plane where the cover plate 20 is located is α, and 0°<α<90°.

[0083] Combine Figure 5 and Figure 6 As shown, Figure 5 Shown along Figure 2 Another cross-sectional structure diagram in the direction shown in MM is as follows: Figure 6 Shown along Figure 2 Another cross-sectional structure diagram in the direction shown by NN. Figure 5 and Figure 6 In the exemplary embodiment shown, the angle between the side wall 31 of the plastic frame 30 and a plane perpendicular to the plane where the cover plate 20 is located is β, where 0°<β<90°.

[0084] In one exemplary embodiment, Figure 7 and Figure 8 As shown, the side wall 31 of the plastic frame 30 is arranged parallel to a plane perpendicular to the plane where the cover plate 20 is located. Figure 7 For the Figure 2 One of the cross-sectional structural diagrams in the direction shown in MM, Figure 8 For the Figure 2 A schematic diagram of one of the cross-sectional structures in the direction shown in NN. Figures 3 to 8 LL represents a plane perpendicular to the plane where the cover plate 20 is located.

[0085] In the embodiment of the present invention, combined with Figures 3 to 8 As shown, the side of the plastic frame 30 facing away from the cover plate 20 is flush with each other. In this way, the convenience of mounting the plastic frame 30 and the subsequent middle frame 200 is improved.

[0086] In an embodiment of the present invention, the display panel 10 includes a display area A and a binding area B located on one side of the display area A. The display panel 10 includes a flat portion 11 located in the display area A, and a bent portion 12 and a fixed portion 13 located in the binding area B. The flat portion 11, the bent portion 12 and the fixed portion 13 are connected in sequence, and the flat portion 11 and the fixed portion 13 extend in the same direction compared to the bent portion 12. The side of the bent portion 12 facing away from the plastic frame 30 and the edge corresponding to the display panel 10 form a hollow structure 40.

[0087] Still combined Figure 4 、 Figure 6 and Figure 8 In the exemplary embodiment shown, the edge of the bent portion 12 facing away from the plastic frame 30 and opposite the display panel 10 forms a hollow structure 40. This prevents water and oxygen from corroding the display panel 10 through the plastic frame 30, improving the drop resistance of the display module while also saving on plastic and reducing production costs.

[0088] In this embodiment of the present invention, magnetorheological fluid is applied to at least a portion of the surface of the plastic frame 30, excluding the surface in contact with the display panel 10. In practical applications, magnetorheological fluid can be used to form the relevant dams, forming a space in the plastic frame 30 corresponding to the plastic material, thereby reducing production costs compared to manufacturing the plastic frame 30 using a mold.

[0089] In the embodiment of the present invention, still combined with Figures 3 to 8 As shown, the display module also includes a heat sink 50 on the side facing away from the light-emitting surface of the display panel 10. The edge of the heat sink 50 is set inward compared to the edge of the cover plate 20, and the orthographic projection of the edge of the heat sink 50 on the cover plate 20 completely falls within the area of ​​the orthographic projection of the plastic frame 30 on the cover plate 20.

[0090] In a specific implementation, the display module further includes a heat sink 50 on the side away from the light-emitting surface of the display panel 10. The heat sink 50 ensures the heat dissipation efficiency of the display module and improves the performance of the display device. For example, the heat sink 50 can be a composite heat dissipation structure composed of mesh glue, foam and copper foil. Figure 3 、 Figure 5 and Figure 7 In the exemplary embodiment shown, the edge of the heat sink 50 is completely covered by the plastic frame 30. Figure 4 、 Figure 6 and Figure 8 In the exemplary embodiment shown, the orthographic projection of the edge of the heat sink 50 on the cover plate 20 completely falls within the area of ​​the orthographic projection of the plastic frame 30 on the cover plate 20.

[0091] It should be noted that the thickness of the portion of the plastic frame 30 close to the edge of the cover plate 20 ranges from 1mm to 1.5mm, and the thickness of the portion of the plastic frame 30 close to the edge of the heat sink 50 ranges from 0.2mm to 0.3mm. For example, the maximum thickness of the portion of the plastic frame 30 close to the edge of the cover plate 20 is 1.2mm, and the minimum thickness of the portion of the plastic frame 30 close to the edge of the heat sink 50 is 0.2mm. In this way, while taking into account the narrow frame design, the protective performance of the plastic frame 30 is guaranteed. Of course, the thickness of each part of the plastic frame 30 can also be set according to actual application needs, which is not limited here. Moreover, in Figure 4 、 Figure 6 and Figure 8 In the exemplary embodiment shown, the distance between the side of the rubber frame 30 close to the edge of the cover plate 20 and the corresponding edge of the cover plate 20 is greater than or equal to 0.1 mm, and the distance between the side of the rubber frame 30 close to the edge of the cover plate 20 and the side of the bending portion 12 close to the edge of the cover plate 20 is greater than or equal to 0.4 mm. Along the plane parallel to the cover plate 20, the extension width of the rubber frame 30 ranges from 1.5 mm to 2.7 mm. The portion of the rubber frame 30 close to the edge of the heat sink 50 needs to extend beyond the edge of the heat sink 50 and extend toward the display area A. Exemplarily, the portion of the rubber frame 30 close to the edge of the heat sink 50 needs to extend beyond the edge of the heat sink 50 by greater than or equal to 0.4 mm. In this way, while taking into account the narrow frame design, the support and protection performance of the rubber frame 30 is guaranteed. Of course, the specific values ​​of the relevant parameters can be set according to actual application needs, which will not be described in detail here.

[0092] In an embodiment of the present invention, the edge of the display panel 10 is set inward compared to the cover plate 20, and the display panel 10 has a flat portion 70 and a curved portion 80 surrounding the flat portion 70; the display module also includes a heat sink 50 facing away from the light-emitting surface of the display panel 10, and the edge of the heat sink 50 is set inward compared to the edge of the display panel 10; the orthographic projection of the edge of the heat sink 50 on the cover plate 20 completely falls within the area of ​​the orthographic projection of the rubber frame 30 on the cover plate 20.

[0093] exist Figure 9In the exemplary embodiment shown, the edge of the display panel 10 is set inward compared to the cover plate 20, and the display panel 10 has a flat portion 70 and a curved portion 80 surrounding the flat portion 70. Exemplarily, the display panel 10 is a flexible display panel, and the product prepared can be a four-curved screen. In addition, the display module also includes a heat sink 50 on the side away from the light-emitting surface of the display panel 10. The edge of the heat sink 50 is set inward compared to the edge of the display panel 10, and the edge of the display panel 10 is set inward compared to the cover plate 20. In this way, the display panel 10 can be protected to a certain extent by the cover plate 20. In addition, the orthographic projection of the edge of the heat sink 50 on the cover plate 20 completely falls within the area of ​​the orthographic projection of the plastic frame 30 on the cover plate 20. In this way, the plastic frame 30 can prevent external water and oxygen from invading the interior of the display module, thereby improving the yield of the display module and improving the impact resistance and drop resistance of the display module.

[0094] Still combined Figure 9 In the exemplary embodiment shown, the curvature of the surface of the plastic frame 30 facing away from the cover plate 20 is the same as the curvature of the curved portion 80. It should be noted that the "same" here can be approximately the same or roughly the same, which is not limited here.

[0095] Still combined Figure 9 In the exemplary embodiment shown, the sidewall of the plastic frame 30 near the edge of the cover plate 20 is perpendicular to the tangent plane of the curved portion 80 at the corresponding position (indicated by the dashed line PP in the figure). Furthermore, the sidewall of the plastic frame 30 facing away from the cover plate 20 is perpendicular to the tangent plane of the planar portion 70 (indicated by the dashed line QQ in the figure). This facilitates the subsequent overlapping of the middle frame and the plastic frame 30 near the edge of the cover plate 20, facilitating the flush placement of the middle frame edge and the cover plate edge, ensuring a narrow bezel design while maintaining structural stability. Furthermore, it effectively ensures sufficient space on the side of the plastic frame 30 away from the edge of the cover plate 20, providing a guarantee for the subsequent installation of other components within this space. This improves the performance of the display module.

[0096] In the embodiment of the present invention, the display module may include other film layer structures in addition to the above-mentioned related film layers. For example, Figure 4 、 Figure 6 and Figure 8As shown, the display module also includes an adhesive layer 60 located between the fixing portion 13 and the heat sink 50. The adhesive layer 60 can adhere the fixing portion 13 to the heat sink 50 and provide a guarantee for the subsequent binding between the fixing portion 13 and the flexible printed circuit (FPC). Exemplarily, the adhesive layer 60 can be an optically clear adhesive (OCA), an optically clear resin (OCR), or a foam adhesive. Of course, other film layer structures can also be set according to actual application needs. The specific settings can be achieved by referring to relevant technologies and will not be described in detail here.

[0097] Based on the same inventive concept, an embodiment of the present invention further provides a display device, which includes the display module 100 mentioned above and a middle frame 200 overlapped with the plastic frame 30 in the display module 100 .

[0098] exist Figure 10 In the exemplary embodiment shown, the display module 100 adopts Figure 8 In the structure shown in the exemplary embodiment, the middle frame 200 includes a first branch 201 and a second branch 202 connected in sequence. The first branch 201 is arranged along the edge of the plastic frame 30, and the edge of the first branch 201 is completely covered by the cover plate 20; the second branch 202 is arranged in overlap with the surface of the plastic frame 30 facing away from the cover plate 20. Figure 10 In the exemplary embodiment shown, the edge of the first branch 201 is flush with the edge of the cover plate 20, thereby ensuring a narrow frame design. Figure 11 As shown, the edge of the first branch 201 may also be arranged beyond the cover plate 20 , thereby ensuring the structural stability between the middle frame 200 and the display module 100 .

[0099] Since the principle of solving the problem of the display device is similar to that of the aforementioned display module 100 , the implementation of the display device can refer to the implementation of the aforementioned display module 100 , and the repeated parts are not repeated here.

[0100] In specific implementations, the display device provided by the embodiments of the present invention can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigation system, or the like. Other essential components of the display device are well understood by those skilled in the art and are not described in detail here, nor should they be construed as limitations of the present invention.

[0101] Based on the same inventive concept, Figure 12As shown, an embodiment of the present invention further provides a method for manufacturing a display module, comprising:

[0102] S101: Obtaining a bonding structure comprising a cover plate and a display panel, wherein the cover plate is located on a light-emitting surface side of the display panel, and an edge of an orthographic projection of the display panel on the cover plate is set back from an edge of the cover plate;

[0103] S102: Disposing an electromagnet structure on at least one side of the laminating structure;

[0104] S103: Under the action of the electromagnetic attraction of the electromagnet structure, a first dam body formed of magnetorheological fluid is deposited in an area near an end of the display panel, and a second dam body formed of magnetorheological fluid is deposited at an edge of the cover plate, wherein an accommodation space is formed between the first dam body and the second dam body;

[0105] S104: forming a plastic frame in the accommodating space, wherein the plastic frame is at least arranged around an edge of an orthographic projection of the display panel on the cover plate, and an edge of the plastic frame is set inward compared to an edge of the cover plate;

[0106] S105: removing the first dam and the second dam to obtain a display module including the plastic frame, the cover plate, and the display panel.

[0107] In the specific implementation process, the specific implementation process of step S101 to step S105 is as follows:

[0108] First, the display panel 10 and the cover plate 20 are bonded to obtain a bonded structure. For example, when the display panel 10 is a flexible display panel 10, the display panel 10 after profiling can be bonded to the cover plate 20 to obtain a bonded structure. The cover plate 20 is located on the light-emitting side of the display panel 10, and the edge of the orthographic projection of the display panel 10 on the cover plate 20 is set inward compared to the edge of the cover plate 20. In this way, the display panel 10 is effectively protected by the cover plate 20. Then, an electromagnet structure is set on at least one side of the bonded structure. The electromagnet structure includes at least one electromagnet unit. For example, the electromagnet unit can be set on the front of the bonded structure, and the electromagnet unit can also be set on both the front and back of the bonded structure. For the relevant settings of the electromagnet unit, please refer to the description of the relevant part below.

[0109] Under the electromagnetic attraction of the electromagnet structure, a first dam 400 formed of magnetorheological fluid is deposited on the display panel 10 near the end 110, and a second dam 500 formed of magnetorheological fluid is deposited on the edge of the cover plate 20, wherein an accommodation space is formed between the first dam 400 and the second dam 500. For example, Figure 7In the exemplary embodiment shown, the end portion 110 may be an edge of the display panel 10; Figure 8 In the exemplary embodiment shown, the end portion 110 may be a side wall located at the rear end of the fixing portion 13 .

[0110] Then, a plastic frame 30 is formed in the accommodating space, wherein the plastic frame 30 is at least arranged around the edge of the orthographic projection of the display panel 10 on the cover plate 20, and the edge of the plastic frame 30 is set inward compared to the edge of the cover plate 20. Exemplarily, the plastic frame 30 is arranged around the edge of the display panel 10, and the edge of the plastic frame 30 is set inward compared to the edge of the cover plate 20. It should be noted that the first dam 400 and the second dam 500 are arranged in a ring shape, such as Figure 13 FIG. 1 is a schematic diagram showing a top view of the display module 100 during the manufacturing process.

[0111] In the embodiment of the present invention, the first dam 400 and the second dam 500 may be provided in the following manners, but are not limited thereto.

[0112] In one exemplary embodiment, Figure 14 As shown, step S103: under the action of the electromagnetic attraction of the electromagnet structure, a first dam formed by magnetorheological fluid is deposited in the area near the end of the display panel, and a second dam formed by magnetorheological fluid is deposited on the edge of the cover plate, including:

[0113] S201: placing a first electromagnet unit and a second electromagnet unit on a side of the cover plate facing away from the display panel, wherein the first electromagnet unit is arranged at an edge of the display panel relative to the orthographic projection of the cover plate, and the second electromagnet unit is arranged at an edge of the cover plate;

[0114] S202: depositing a first fluid at a position corresponding to the first electromagnet unit and a second fluid at a position corresponding to the second electromagnet unit through a pneumatic valve loaded with magnetorheological fluid;

[0115] S203: Under the action of the electromagnetic attraction of the first electromagnet unit, the first fluid is shaped into a first dam body, and under the action of the electromagnetic attraction of the second electromagnet unit, the second fluid is shaped into a second dam body; wherein, the first dam body is located in the area close to the end of the display panel, the second dam body is located at the edge of the cover plate, and the distance between the first electromagnet unit and the first dam body is greater than the distance between the second electromagnet unit and the second dam body; along the direction approaching the cover plate, the cross-sectional area of ​​the first dam body parallel to the plane where the cover plate is located tends to increase, and the cross-sectional area of ​​the second dam body parallel to the plane where the cover plate is located tends to increase, and the thickness of the first dam body is less than the thickness of the second dam body.

[0116] In the specific implementation process, Figure 3 Taking the display module 100 shown as an example, Figure 15 The preparation structure diagram shown in FIG. 1 illustrates the specific implementation process of steps S201 to S203 as follows:

[0117] First, a first electromagnet unit 301 and a second electromagnet unit 302 are placed on the side of the cover plate 20 facing away from the display panel 10. The first electromagnet unit 301 is placed at the edge of the display panel 10 relative to the orthographic projection of the cover plate 20, and the second electromagnet unit 302 is placed at the edge of the cover plate 20. A pneumatic valve 600 loaded with magnetorheological fluid is used to deposit the first fluid at the corresponding position of the first electromagnet unit 301, and the second fluid at the corresponding position of the second electromagnet unit 302. Then, under the action of the electromagnetic attraction of the first electromagnet unit 301, the first fluid is shaped into a first dam body 400, and under the action of the electromagnetic attraction of the second electromagnet unit 302, the second fluid is shaped into a second dam body 500; wherein, the first dam body 400 is located in the area near the end 110 of the display panel 10, and the second dam body 500 is located at the edge of the cover plate 20; the distance between the first electromagnet unit 301 and the first dam body 400 is greater than the distance between the second electromagnet unit 302 and the second dam body 500, and, in the direction close to the cover plate 20, the cross-sectional area of ​​the first dam body 400 along the plane parallel to the cover plate 20 tends to increase, and the cross-sectional area of ​​the second dam body 500 along the plane parallel to the cover plate 20 tends to increase, and the thickness of the first dam body 400 is less than the thickness of the second dam body 500. Still combined Figure 15 As shown, h1 is greater than h2, where h1 represents the distance between the first electromagnet unit 301 and the first dam body 400, and h2 represents the distance between the second electromagnet unit 302 and the second dam body 500. For example, 0.2 mm ≤ h2 ≤ 2.5 mm. Of course, the specific values ​​of h1 and h2 can also be set according to actual application needs and are not limited here. The adhesive material required for the adhesive frame 30 can subsequently be printed within the accommodation space between the first dam body 400 and the second dam body 500. The specific implementation process can be referred to the description of the relevant sections below.

[0118] In one exemplary embodiment, in step S202, after the first fluid is deposited at the corresponding position of the first electromagnet unit 301 and the second fluid is deposited at the corresponding position of the second electromagnet unit 302 through the air pressure valve 600 loaded with magnetorheological fluid, the method further includes:

[0119] A third electromagnet unit 303 is provided on the side of the first fluid away from the cover plate 20, and a fourth electromagnet unit 304 is provided on the side of the second fluid away from the cover plate 20. The first fluid is shaped into a first dam body 400 by the electromagnetic attraction of the first electromagnet unit 301 and the third electromagnet unit 303, and the second fluid is shaped into a second dam body 500 by the electromagnetic attraction of the second electromagnet unit 302 and the fourth electromagnet unit 304; along the direction approaching the cover plate 20, the cross-sectional area of ​​the first dam body 400 parallel to the plane where the cover plate 20 is located is equal, and the cross-sectional area of ​​the second dam body 500 parallel to the plane where the cover plate 20 is located is equal.

[0120] In this exemplary embodiment, Figure 8 Taking the display module 100 shown as an example, Figure 16 In the manufacturing process flow chart shown, the first electromagnet unit 301 and the third electromagnet unit 303 are respectively at equal distances from the first dam body 400, the second electromagnet unit 302 and the fourth electromagnet unit 304 are respectively at equal distances from the second dam body 500, and the distance between the first electromagnet unit 301 and the first dam body 400 is greater than the distance between the second electromagnet unit 302 and the second dam body 500. Here, h3 represents the distance between the third electromagnet unit 303 and the first dam body 400, and h4 represents the distance between the fourth electromagnet unit 304 and the second dam body 500, satisfying the formulas h1 = h3, h2 = h4. In this way, the electromagnetic attraction forces exerted by the first electromagnet unit 301 and the third electromagnet unit 303 on the magnetorheological fluid at the corresponding positions of the first fluid are approximately equal, and the cross-sectional areas of the first dam body 400 along the direction of approaching the cover plate 20 after shaping are equal along the plane parallel to the cover plate 20. Similarly, the electromagnetic attraction forces exerted by the second electromagnet unit 302 and the fourth electromagnet unit 304 on the magnetorheological fluid at the corresponding positions of the second fluid are approximately equal, and the cross-sectional areas of the second dam body 500 along the direction of approaching the cover plate 20 after shaping are equal along the plane parallel to the cover plate 20. It should be noted that the term "equal" here can mean approximately equal or approximately equal.

[0121] In one exemplary embodiment, Figure 17 As shown, step S104: forming a plastic frame in the accommodating space, including:

[0122] S301: Using printing technology, filling low-viscosity glue into the accommodating space, wherein the viscosity of the low-viscosity glue ranges from 0 cps to 200 cps;

[0123] S302: using a 370nm LED cold light source to cure the low-viscosity glue to form a glue frame, wherein the glue frame is flush with a side facing away from the cover plate.

[0124] In one exemplary embodiment, the Figure 18 The process flow chart shown in FIG. 1 illustrates the specific implementation process of step S301 to step S302 as follows:

[0125] Still taking the display module shown in the preparation diagram as an example, after the magnetorheological fluid is molded and the dam body is built, the area between the first dam body 400 and the second dam body 500 is filled with low-viscosity glue 700. The viscosity of the low-viscosity glue 700 ranges from 0cps to 200cps. Exemplarily, ultraviolet glue can be used for printing, and the UV glue is filled in the area between the dam bodies. Exemplarily, acrylic glue can be used for the low-viscosity glue 700, the diameter of the printing glue valve can be 0.1mm, the printing speed can be 50mm / s, and a Macro piezoelectric valve can be used for printing. The voltage used by the piezoelectric valve can be 220V, and the frequency can be 200Hz. Of course, the air pressure and printing speed of the piezoelectric valve can also be controlled according to actual application needs, which are not limited here.

[0126] After printing the low-viscosity glue 700, a 370nm light emitting diode (LED) cold light source 710 can be used to cure the low-viscosity glue 700. The 370nm photoinitiator in the low-viscosity glue 700 allows the LED light to pass through the display panel 10 and fully cure the glue in the narrow gap between the bend 12 and the cover plate 20. This improves the subsequent extrusion strength of the glue frame 30, enhancing its impact and drop resistance, as well as its waterproof performance.

[0127] In the embodiment of the present invention, Figure 19 As shown, step S105: removing the first dam body and the second dam body includes:

[0128] S401: Disposing a fifth electromagnet unit on a side of the first dam body facing away from the plastic frame, disposing a sixth electromagnet unit on a side of the second dam body facing away from the plastic frame, and removing the first, second, third, and fourth electromagnet units; wherein a first recovery film is disposed on a surface of the fifth electromagnet unit close to the first dam body, and a second recovery film is disposed on a surface of the sixth electromagnet unit close to the second dam body; wherein each of the first and second recovery films has a plurality of nanoscale micropores;

[0129] S402: Recovering the magnetorheological fluid corresponding to the first dam body by using the first recovery membrane, and recovering the magnetorheological fluid corresponding to the second dam body by using the second recovery membrane.

[0130] In the specific implementation process, combined with Figure 20 The preparation structure diagram shown in FIG. 4 is used to explain the specific implementation process of step S401 to step S402 as follows:

[0131] After the low-viscosity glue 700 is cured, a fifth electromagnet unit 305 can be set on the side of the first dam body 400 facing away from the glue frame 30, and a sixth electromagnet unit 306 can be set on the side of the second dam body 500 facing away from the glue frame 30, and the first electromagnet unit 301, the second electromagnet unit 302, the third electromagnet unit 303 and the fourth electromagnet unit 304 are removed; in this way, the magnetorheological fluid corresponding to the dam body at the corresponding position can be subsequently recovered by contact using the fifth electromagnet unit 305 and the sixth electromagnet unit 306. The fifth electromagnet unit 305 is provided with a first recovery film 800 on a side surface close to the first dam 400, and the sixth electromagnet unit 306 is provided with a second recovery film 900 on a side surface close to the second dam 500. Both the first recovery film 800 and the second recovery film 900 are provided with a plurality of nano-scale micropores. In this way, the magnetorheological fluid can be recovered on the surface of the first recovery film 800 and the second recovery film 900, while preventing the magnetorheological fluid from contaminating the electromagnet units. Of course, the specific number of the plurality of nano-scale micropores can be set according to actual application needs. In order to ensure that the first recovery film 800 and the second recovery film 900 can effectively recover the magnetorheological fluid, vacuum holes can also be provided inside the fifth electromagnet unit 305 and the sixth electromagnet unit 306. In this way, vacuum suction can be increased for the magnetorheological fluid. During the recovery process, the magnetorheological fluid is subjected to electromagnetic suction and vacuum suction, thereby achieving rapid recovery of the magnetorheological fluid and effectively preventing the magnetorheological fluid from remaining on the plastic frame 30.

[0132] It should be noted that the magnetorheological fluid in the preparation process may be an oily magnetorheological fluid, which has good demoulding properties and can achieve a demoulding effect without damaging the surface of the plastic frame 30 .

[0133] In an embodiment of the present invention, after step S105: removing the first dam body and the second dam body, the method further includes:

[0134] The surface of the plastic frame 30 is cleaned using a pen-type plasma device 910 to remove the magnetorheological fluid remaining on the surface of the plastic frame 30 , thereby obtaining a cleaned plastic frame 30 .

[0135] For example, after the magnetorheological fluid is recovered, the surface of the plastic frame 30 can be cleaned using a pen-type plasma device 910 to ensure that no magnetorheological fluid remains on the surface of the plastic frame 30, thereby facilitating the subsequent assembly of the plastic frame 30 and the middle frame 200. Figure 21 Shown is a schematic diagram of one of the cleaning processes.

[0136] Embodiments of the present invention provide a display module, a manufacturing method thereof, and a display device, wherein the display module includes a display panel 10, a cover plate 20, and a plastic frame 30. The cover plate 20 is located on the light-emitting side of the display panel 10, and the edge of the orthographic projection of the display panel 10 on the cover plate 20 is set inward compared to the edge of the cover plate 20. The plastic frame 30 is arranged at least around the edge of the orthographic projection of the display panel 10 on the cover plate 20, and the edge of the plastic frame 30 is set inward compared to the edge of the cover plate 20. In this way, the plastic frame 30 effectively prevents water and oxygen from corroding the display panel 10, while also improving the drop resistance of the display module. When the middle frame 200 is subsequently placed in the retracted space between the edge of the plastic frame 30 and the edge of the cover plate 20, the display module can be overlapped with the middle frame 200 through the plastic frame 30, thereby ensuring the narrow bezel design of the display module.

[0137] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0138] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A display module, characterized in that: include: Display panel, cover plate and plastic frame; In which, the cover plate is located on the light-emitting surface side of the display panel, and the edge of the orthographic projection of the display panel on the cover plate is set inward compared to the edge of the cover plate; the plastic frame is set at least around the edge of the orthographic projection of the display panel on the cover plate, and the edge of the plastic frame is set inward compared to the edge of the cover plate.

2. The display module according to claim 1, wherein: The side wall of the plastic frame is inclined relative to a plane perpendicular to the plane where the cover plate is located.

3. The display module according to claim 2, wherein: The angle between the side wall of the plastic frame and a plane perpendicular to the plane where the cover plate is located is an acute angle.

4. The display module according to claim 1, wherein: The side wall of the plastic frame is arranged parallel to a plane perpendicular to the plane where the cover plate is located.

5. The display module according to any one of claims 1 to 4, wherein: The side of the plastic frame facing away from the cover plate is flush with each other.

6. The display module according to any one of claims 1 to 4, wherein: The display panel includes a display area and a binding area located on one side of the display area. The display panel includes a flat portion located in the display area, and a bent portion and a fixed portion located in the binding area. The flat portion, the bent portion and the fixed portion are connected in sequence, and the flat portion and the fixed portion extend in the same direction compared to the bent portion. The side of the bent portion facing away from the plastic frame and the edge corresponding to the display panel form a hollow structure.

7. The display module according to any one of claims 1 to 4, wherein: At least a portion of the surface of the rubber frame except the surface in contact with the display panel is provided with magnetorheological fluid.

8. The display module according to any one of claims 1 to 4, wherein: The display module also includes a heat sink on the side away from the light-emitting surface of the display panel. The edge of the heat sink is set inward compared to the edge of the cover plate, and the orthographic projection of the edge of the heat sink on the cover plate completely falls within the area of ​​the orthographic projection of the rubber frame on the cover plate.

9. The display module according to claim 1, wherein: The edge of the display panel is set inward compared to the cover plate, and the display panel has a flat portion and a curved portion surrounding the flat portion; the display module also includes a heat sink on the side away from the light-emitting surface of the display panel, and the edge of the heat sink is set inward compared to the edge of the display panel; the orthographic projection of the edge of the heat sink on the cover plate completely falls within the area of ​​the orthographic projection of the rubber frame on the cover plate.

10. The display module according to claim 9, wherein: The curvature of the surface of the side of the plastic frame facing away from the cover plate is the same as the curvature of the curved portion.

11. The display module according to claim 10, wherein: The side wall of the plastic frame close to the edge of the cover plate is perpendicular to the tangent plane of the curved portion at the corresponding position, and the side wall of the plastic frame away from the edge of the cover plate is perpendicular to the tangent plane of the planar portion.

12. A method for manufacturing a display module, characterized in that: include: Obtaining a bonding structure comprising a cover plate and a display panel, wherein the cover plate is located on a side of a light-emitting surface of the display panel, and an edge of an orthographic projection of the display panel on the cover plate is set back from an edge of the cover plate; An electromagnet structure is provided on at least one side of the laminating structure; Under the action of the electromagnetic attraction of the electromagnet structure, a first dam body formed of magnetorheological fluid is accumulated in an area near the end of the display panel, and a second dam body formed of magnetorheological fluid is accumulated at the edge of the cover plate, wherein an accommodating space is formed between the first dam body and the second dam body; A plastic frame is formed in the accommodating space, wherein the plastic frame is at least arranged around an edge of an orthographic projection of the display panel on the cover plate, and an edge of the plastic frame is set inward compared to an edge of the cover plate; The first dam and the second dam are removed to obtain a display module including the plastic frame, the cover plate and the display panel.

13. The method according to claim 12, wherein: A first dam formed of magnetorheological fluid is deposited on an area near an end of the display panel, and a second dam formed of magnetorheological fluid is deposited on an edge of the cover plate, comprising: A first electromagnet unit and a second electromagnet unit are placed on a side of the cover plate away from the display panel, wherein the first electromagnet unit is arranged at an edge of the display panel relative to the orthographic projection of the cover plate, and the second electromagnet unit is arranged at an edge of the cover plate; A first fluid is deposited at a position corresponding to the first electromagnet unit and a second fluid is deposited at a position corresponding to the second electromagnet unit through an air pressure valve loaded with magnetorheological fluid; Under the action of the electromagnetic attraction of the first electromagnet unit, the first fluid is shaped into a first dam body, and under the action of the electromagnetic attraction of the second electromagnet unit, the second fluid is shaped into a second dam body; wherein, the first dam body is located in the area near the end of the display panel, the second dam body is located at the edge of the cover plate, and the distance between the first electromagnet unit and the first dam body is greater than the distance between the second electromagnet unit and the second dam body; along the direction approaching the cover plate, the cross-sectional area of ​​the first dam body parallel to the plane where the cover plate is located tends to increase, and the cross-sectional area of ​​the second dam body parallel to the plane where the cover plate is located tends to increase, and the thickness of the first dam body is less than the thickness of the second dam body.

14. The method according to claim 13, wherein After the first fluid is deposited at the position corresponding to the first electromagnet unit and the second fluid is deposited at the position corresponding to the second electromagnet unit through the air pressure valve loaded with magnetorheological fluid, the method further includes: A third electromagnet unit is provided on a side of the first fluid facing away from the cover plate, and a fourth electromagnet unit is provided on a side of the second fluid facing away from the cover plate. The first fluid is shaped into a first dam body by the electromagnetic attraction of the first electromagnet unit and the third electromagnet unit, and the second fluid is shaped into a second dam body by the electromagnetic attraction of the second electromagnet unit and the fourth electromagnet unit; along the direction approaching the cover plate, the cross-sectional area of ​​the first dam body parallel to the plane where the cover plate is located is equal, and the cross-sectional area of ​​the second dam body parallel to the plane where the cover plate is located is equal.

15. The method according to claim 13 or 14, characterized in that The first dam body and the second dam body are arranged flush or non-flush on a side facing away from the cover plate.

16. The method according to claim 14, wherein The first electromagnet unit and the third electromagnet unit are respectively at equal distances from the first dam body, the second electromagnet unit and the fourth electromagnet unit are respectively at equal distances from the second dam body, and the distance between the first electromagnet unit and the first dam body is greater than the distance between the second electromagnet unit and the second dam body.

17. The method according to claim 12, wherein A plastic frame is formed in the accommodating space, comprising: Using printing technology, low-viscosity glue is filled into the accommodating space, where the viscosity of the low-viscosity glue ranges from 0 cps to 200 cps; The low-viscosity glue is cured by using a 370nm LED cold light source to form a glue frame, wherein the glue frame is flush with a side facing away from the cover plate.

18. The method according to claim 14, wherein The removing of the first dam body and the second dam body comprises: A fifth electromagnet unit is provided on a side of the first dam body facing away from the plastic frame, and a sixth electromagnet unit is provided on a side of the second dam body facing away from the plastic frame, and the first, second, third, and fourth electromagnet units are removed; wherein a first recovery film is provided on a surface of the fifth electromagnet unit close to the first dam body, and a second recovery film is provided on a surface of the sixth electromagnet unit close to the second dam body; wherein the first recovery film and the second recovery film are both provided with a plurality of nano-scale micropores; The magnetorheological fluid corresponding to the first dam body is recovered by using the first recovery film, and the magnetorheological fluid corresponding to the second dam body is recovered by using the second recovery film.

19. The method according to any one of claims 12 to 14, 16 to 18, wherein: After removing the first dam body and the second dam body, the method further includes: The surface of the rubber frame is cleaned using a pen-type plasma device to remove the magnetorheological fluid remaining on the surface of the rubber frame, thereby obtaining a cleaned rubber frame.

20. A display device, characterized in that: include: The display module according to any one of claims 1 to 11, and a middle frame overlapped with a plastic frame in the display module.

Images