Display device and manufacturing method thereof

Abstract

The invention discloses a display device and a manufacturing method thereof. The display device comprises a cover plate; the display assembly is located on one side of the cover plate; the display assembly comprises a display panel and a flexible circuit board bound with the display panel; the display panel comprises a first edge, and the flexible circuit board is located on one side of the first edge; the edge sealing structure is located on the side, close to the display assembly, of the cover plate, the edge sealing structure comprises a first edge sealing layer and at least one second edge sealing layer, and the orthographic projection, on the cover plate, of the bent part of the flexible circuit board is located in the orthographic projection, on the cover plate, of the edge sealing structure; the first edge sealing layer at least covers the edge, extending to the cover plate, of the first edge; in the direction parallel to the display panel, the first face, away from one side of the display panel, of the first edge sealing layer is sunken towards one side of the display panel, and the sunken space of the first face is filled with the at least one second edge sealing layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device and a manufacturing method thereof. BACKGROUND

[0002] Please refer to Figure 1 The figure is a schematic diagram of the lapping of the middle frame and the cover plate of a conventional mobile phone product. Due to the requirements of the whole machine anti-collision and extrusion strength, the whole machine assembly needs to ensure that the middle frame of the whole machine and the flexible circuit board of the product do not contact.

[0003] In consideration of the fitting accuracy of the cover plate 1', the bending accuracy of the flexible circuit board 2', the position and thickness accuracy of the metal cover layer (MCL) glue layer 3', and the tolerance of the whole machine assembly (middle frame 4'), the flexible circuit board bending vertex to the outer edge of the cover plate needs to reserve a certain gap, which is not conducive to the design of the narrow frame of the mobile phone product.

[0004] Therefore, how to reduce the distance from the flexible circuit board bending vertex to the outer edge of the cover plate becomes a technical problem to be solved. SUMMARY

[0005] The display device and the manufacturing method thereof provided by the embodiments of the present application solve the technical problem of the excessive distance from the flexible circuit board bending vertex to the outer edge of the cover plate in the prior art.

[0006] In a first aspect, to solve the above technical problem, the embodiments of the present application provide a display device, comprising:

[0007] a cover plate;

[0008] a display assembly located on one side of the cover plate; the display assembly comprises a display panel and a flexible circuit board bound with the display panel; the display panel comprises a first edge, and the flexible circuit board is located on one side of the first edge;

[0009] an edge sealing structure located on one side of the cover plate close to the display assembly; the edge sealing structure comprises a first edge sealing layer and at least one second edge sealing layer; the projection of the bending part of the flexible circuit board on the cover plate is located in the projection of the edge sealing structure on the cover plate; the first edge sealing layer at least covers the first edge and extends to the edge of the cover plate; in the direction parallel to the display panel, the first side of the first edge sealing layer away from the display panel is recessed towards the one side of the display panel; and the at least one second edge sealing layer is filled in the recessed space of the first side.

[0010] In a possible implementation, the side of the first edge sealing layer away from the second edge sealing layer is recessed relative to the edge of the display panel.

[0011] In a possible implementation, a second edge sealing layer farthest from the first edge sealing layer is flush with a side surface of the cover plate away from a second surface of the first edge sealing layer.

[0012] In a possible implementation, the bending portion at least partially overlaps the first edge sealing layer in the orthographic projection of the cover plate.

[0013] In a possible implementation, the bending portion is located within the first edge sealing layer in the orthographic projection of the cover plate.

[0014] In a possible implementation, the viscosity of the material of the first edge sealing layer is at least 0.1 times smaller than the viscosity of the material of the second edge sealing layer.

[0015] In a possible implementation, the material adopted by the first edge sealing layer comprises a first adhesive.

[0016] The material adopted by the second edge sealing layer comprises a second adhesive, and the first adhesive and the second adhesive are the same type of adhesive.

[0017] In a possible implementation, in the thickness direction of the cover plate, the thickness of the first edge sealing layer is greater than the thickness of the display assembly.

[0018] In a possible implementation, the display device further comprises:

[0019] The middle frame comprises a body and a frame body connected to each other; the frame body extends from the body to the cover plate, and the extending directions of the frame body and the body are different;

[0020] The frame body abuts against a side of the edge sealing structure away from the flexible circuit board, and the body abuts against a side of the edge sealing structure away from the cover plate.

[0021] In a possible implementation, the first edge sealing layer is arranged around the edge of the cover plate, and the first edge sealing layer covers at least the edge of the display panel and extends to the edge of the cover plate.

[0022] The first surface is arranged around the edge of the cover plate.

[0023] In a second aspect, an embodiment of the present application provides a manufacturing method of a display device, comprising:

[0024] Providing a cover plate and a display assembly; the display assembly is located at one side of the cover plate, and the display assembly comprises a display panel and a flexible circuit board bound to the display panel; the display panel comprises a first edge, and the flexible circuit board is located at one side of the first edge;

[0025] A sealing edge structure is formed on the side of the cover plate close to the display component; the sealing edge structure includes a first sealing layer and at least one second sealing layer, and the bending portion of the flexible circuit board is located within the orthographic projection of the cover plate. The first sealing edge layer covers at least the first edge and extends to the edge of the cover plate. In a direction parallel to the display panel, the first side of the first sealing layer away from the display panel is recessed toward the side of the display panel, and the at least one second edge layer fills the recessed space of the first side.

[0026] In one possible implementation, a sealing edge structure is formed on a side of the cover plate close to the display assembly, including:

[0027] Flip the display assembly and the cover plate together by 90° so that the display panel and the cover plate are perpendicular to the ground plane;

[0028] A jig is provided on a side of the display assembly away from the cover plate, wherein a side of the jig away from the ground plane is flush with a side of the cover plate away from the ground plane;

[0029] Filling a first adhesive into the groove formed by the jig, the display assembly and the cover plate to form a first edge sealing layer;

[0030] Filling a second adhesive on a side of the first adhesive away from the display panel;

[0031] curing the first adhesive and the second adhesive to form the first edge sealing layer and the second edge sealing layer;

[0032] The jig is removed.

[0033] In one possible implementation, a jig is provided on a side of the display assembly away from the cover plate, and a first adhesive is filled in a groove formed by the jig, the display assembly, and the cover plate to form a first edge sealing layer, including:

[0034] Dividing the edge of the display panel into a plurality of sub-edges connected in sequence; wherein the first edge is one of the plurality of sub-edges;

[0035] Starting from a designated sub-edge among the plurality of sub-edges, a corresponding sub-jig is sequentially set for each sub-edge in a preset direction; wherein both ends of the sub-jig are blocked;

[0036] After setting up the sub-jig corresponding to each sub-edge, the first adhesive is filled into the sub-groove surrounded by the sub-jig corresponding to the sub-edge, the cover plate and the display assembly until the sub-groove corresponding to each sub-edge is filled to form the first edge sealing layer.

[0037] A possible implementation, in which the first adhesive is filled into a sub-groove formed by a sub-jig corresponding to a sub-edge, sub-groove, and the cover plate and the display assembly, includes:

[0038] The sub-groove is scanned to determine a first containing volume of the sub-groove;

[0039] A first filling amount of the first adhesive is determined according to the first containing volume;

[0040] The first adhesive is filled into the sub-groove according to the first filling amount.

[0041] A possible implementation, in which a second adhesive is filled on a side of the first adhesive away from the display panel, includes:

[0042] After filling the sub-groove corresponding to each sub-edge, a side of the first adhesive away from the corresponding sub-edge is scanned,

[0043] A second containing volume of a sub-recessed space in which the side of the first adhesive away from the corresponding sub-edge is recessed is determined;

[0044] A second filling amount of the second adhesive is determined according to the second containing volume;

[0045] The second adhesive is filled into the sub-recessed space according to the second filling amount.

[0046] A possible implementation, after curing the second adhesive and before removing the jig, further includes:

[0047] A side of the second edge sealing layer away from the first edge sealing layer is scanned;

[0048] It is determined whether a flatness of the side of the second edge sealing layer away from the first edge sealing layer is less than or equal to a preset flatness according to a scanning result;

[0049] If not, the side of the second edge sealing layer away from the first edge sealing layer is leveled with the second adhesive and cured until a flatness of a newly formed second edge sealing layer away from the first edge sealing layer is less than or equal to the preset flatness; wherein the side of the newly formed second edge sealing layer away from the first edge sealing layer is flush with a side of the cover plate.

[0050] A possible implementation, in which an edge shape of the display panel is a rectangle with rounded corners; the rectangle is divided into four sub-edges, and at least two of the four sub-edges contain the rounded corners.

[0051] In one possible embodiment, the cross-sectional shape of the sub-jig along the thickness direction of the display panel is L-shaped; the vertical portion of the L-shape is parallel to the cover plate, and the horizontal portion of the L-shape is perpendicular to the display panel and abuts against the side of the display panel away from the cover plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a schematic diagram of the connection between the middle frame and the cover of a conventional mobile phone product;

[0053] Figure 2 A rear view of a display device provided by an embodiment of the present invention;

[0054] Figure 3 The embodiment of the present invention provides Figure 2 Cross-section along the AA' direction;

[0055] Figure 4 A rear view of another display device provided by an embodiment of the present invention;

[0056] Figure 5 The embodiment of the present invention provides Figure 4 A cross-section in the BB' direction;

[0057] Figure 6 The embodiment of the present invention provides Figure 4 Another cross-sectional view in the BB' direction;

[0058] Figure 7 A schematic diagram of the thickness of a first edge sealing layer provided in an embodiment of the present invention;

[0059] Figure 8 A schematic structural diagram of another display device provided by an embodiment of the present invention;

[0060] Figure 9 FIG2 is a schematic structural diagram of another display device provided by an embodiment of the present invention;

[0061] Figure 10 A schematic diagram of filling the first edge sealing layer provided in an embodiment of the invention;

[0062] Figure 11 A schematic structural diagram of another display device provided by an embodiment of the present invention;

[0063] Figure 12 A schematic structural diagram of another display device provided by an embodiment of the present invention;

[0064] Figure 13 A flowchart of a method for manufacturing a display device is provided for an embodiment of the present invention;

[0065] Figure 14A schematic view of forming the edge sealing structure provided by the embodiment of the present application;

[0066] Figure 15 And Figure 16 A schematic view of the relationship between the display device and the jig provided by the embodiment of the present application;

[0067] Figure 17 A schematic view of forming the first edge sealing layer provided by the embodiment of the present application;

[0068] Figure 18 A schematic view of filling the second adhesive provided by the embodiment of the present application;

[0069] Figure 19 Another schematic view of forming the second edge sealing layer provided by the embodiment of the present application;

[0070] Figure 20 A top view of the sub-jig provided by the embodiment of the present application;

[0071] Figure 21 A sectional view of the sub-jig provided by the embodiment of the present application;

[0072] Figure 22 A process flow chart of forming the edge sealing structure provided by the embodiment of the present application;

[0073] Cover plate 1, display assembly 2, display panel 21, first edge 21a, flexible circuit board 22, bending part 22a, edge sealing structure 3, first edge sealing layer 31, first surface 31a, second edge sealing layer 32, recessed space a1 of the first surface, second surface 32a, optical glue 23, upper polarizer 24, back film 25, heat dissipation film 26, support 27, anti-static film 28, middle frame 4, body 41, frame 42.

[0074] Jig 5, sub-jig 51, groove b, sub-groove b1, sub-recessed space a11. DETAILED DESCRIPTION

[0075] The display device and the manufacturing method thereof provided by the embodiment of the present application can solve the technical problem that the distance from the bending vertex of the flexible circuit board to the outer edge of the cover plate is too large in the prior art.

[0076] It should be understood that the specific structures and functional details disclosed in the embodiments of the present application are merely representative, and are for the purpose of describing the exemplary embodiments of the present application. However, the present application can be embodied in many alternative forms, and should not be interpreted as being limited to the embodiments set forth herein.

[0077] In the description of the application, it needs to be understood that the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more features. In the description of the application, unless otherwise specified and limited, the term "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0078] In the description of the application, it needs to be understood that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0079] The terms used in the present application are only used to describe specific embodiments and are not intended to limit the exemplary embodiments. Unless the context clearly indicates otherwise, the singular form "a", "an" used herein is also intended to include the plural. It should also be understood that the terms "include" and / or "contain" herein specify the existence of the stated features, integers, steps, operations, units and / or components, and do not exclude the existence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0080] The term "and / or" in the embodiments of the application is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents that the front and rear associated objects have an "or" relationship.

[0081] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the following will further describe the present application with reference to the accompanying drawings and embodiments. However, the example embodiments can be implemented in various forms, and should not be understood as being limited to the embodiments set forth herein; on the contrary, these embodiments are provided so as to make the present application more comprehensive and complete, and to fully convey the ideas of the example embodiments to those skilled in the art. The same reference numerals in the drawings represent the same or similar structures, and thus repeated description thereof will be omitted. The words expressing position and direction described in the present application are described with reference to the drawings, but can be changed as needed, and the changes are included in the protection scope of the present application. The drawings of the present application are only used to illustrate the relative position relationship and do not represent the real proportion.

[0082] It should be noted that specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced in a variety of ways beyond those specifically described herein, and the present application can be practiced with similar effect in embodiments not specifically described herein. Therefore, the present application is not limited to the specific embodiments disclosed below. The subsequent description of the specification is a preferred embodiment for implementing the present application, and the description is for the purpose of illustrating the general principles of the present application, and is not intended to limit the scope of the present application. The protection scope of the present application is defined by the appended claims.

[0083] The display device and the manufacturing method thereof provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0084] Please refer to Figure 2 and Figure 3 , Figure 2 the back view of a display device provided by the embodiments of the present application, Figure 3 the display device provided by the embodiments of the present application Figure 2 the cross-sectional view of AA' direction in the display device, which comprises:

[0085] the cover plate 1;

[0086] the display assembly 2 located on one side of the cover plate 1; the display assembly 2 comprises a display panel 21 and a flexible circuit board 22 bound with the display panel 21; the display panel 21 comprises a first side 21a, and the flexible circuit board 22 is located on one side of the first side 21a;

[0087] The edge sealing structure 3 is located on the side of the cover plate 1 close to the display component 2. The edge sealing structure 3 includes a first edge sealing layer 31 and at least one second edge sealing layer 32. The orthographic projection of the bent portion 22a of the flexible circuit board 22 on the cover plate 1 is located within the orthographic projection of the edge sealing structure on the cover plate 1; the first edge sealing layer 31 at least covers the first edge 21a and extends to the edge of the cover plate 1; in the direction X parallel to the display panel 21, the first surface 31a of the first edge sealing layer 31 away from the side of the display panel 21 is recessed toward the side of the display panel 21, and at least one second edge sealing layer 32 fills the recessed space a1 of the first surface 31a.

[0088] like Figure 3 As shown, by allowing the first edge sealing layer 31 to at least cover the first edge 21a of the display panel 21 and extend to the edge of the cover plate 1, and in the direction X parallel to the display panel 21, the second edge sealing layer 32 is used to fill the concave space a1 of the first edge sealing layer 31 away from the display panel 21, so that the edge sealing structure 3 can at least cover the first edge 21a of the display panel 21 and extend to the edge of the cover plate 1, so that the orthographic projection of the bent portion 22a of the flexible circuit board 22 on the cover plate 1 is located within the orthographic projection of the edge sealing structure 3 on the flexible circuit board 22, thereby protecting the bent portion 22a of the flexible circuit board 22, thereby eliminating the need for the edge sealing structure 3 to be placed on the cover plate 1. Figure 1 As in the prior art shown, the position and thickness accuracy of the MCL glue 3' and the assembly tolerance of the entire device are taken into consideration. In this way, there is no need to recess the middle frame 4 toward the display panel 21 due to the need to overlap the edge of the cover plate 1 as in the prior art, thereby effectively reducing the distance between the bending vertex of the flexible circuit board 22 and the edge of the cover plate 1.

[0089] See Figure 4 A rear view of another display device provided by an embodiment of the present invention;

[0090] The first edge sealing layer 31 is disposed around the edge of the cover plate 1 . The first edge sealing layer 31 at least covers the edge of the display panel 21 and extends to the edge of the cover plate 1 .

[0091] The first surface 31 a is arranged around the edge of the cover plate 1 .

[0092] The orthographic projection of the first edge sealing layer 31 on the cover plate 1 is annular, and correspondingly, the first surface 31 a of the first edge sealing layer 31 away from the display panel 21 is an annular concave surface.

[0093] In the embodiment provided by the present invention, by allowing the first edge sealing layer 31 to be arranged around the edge of the cover plate 1 and allowing the second edge sealing layer 32 to be filled in the recessed space a1 on the side of the first surface 31a recessed toward the display panel 21, the edge sealing structure 3 can be used to integrally encapsulate and protect the entire edge of the display device, thereby improving the overall strength of the display device, enhancing the positive electrode's anti-collision performance and compressive strength, and improving the overall waterproofness of the device.

[0094] Please continue to see Figure 4 In the extending direction of the first edge 21a, both ends of the first edge 21a are aligned with both ends of the flexible circuit board 22. Figure 4 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to Figure 3 Here, no longer described.

[0095] Please see Figure 5 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to Figure 4 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to

[0096] Figure 6 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to Figure 4 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to

[0097] Please see Figure 7 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to

[0098] It should be understood that the thickness d' of the display assembly 2 is not limited to the sum of the thicknesses of the display panel 21 and the flexible circuit board 22.

[0099] Please see Figure 8 The cross-sectional view of the middle sealing edge structure 3 in the first edge 21a can refer to

[0100] The optical adhesive 23 is located on the side of the cover plate 1 close to the display panel 21.

[0101] The upper polarizer 24 is located between the optical adhesive 23 and the display panel 21.

[0102] The back film 25 is located on the side of the display panel 21 away from the cover plate 1.

[0103] The heat dissipation film 26 is located on the side of the back film 25 away from the display panel 21.

[0104] The support 27 is located on the side of the heat dissipation film 26 away from the display panel 21, and the flexible circuit board 22 is attached to the side of the support 27 away from the heat dissipation film 26 after being bent.

[0105] An anti-static film 28 is located on the side of the flexible circuit board 22 away from the support 27.

[0106] As shown in Figure 8 , the thickness d' of the display assembly 2 comprises the thicknesses of the film layers constituting the display assembly 2. Figure 8 As shown in , the thickness d' of the display assembly 2 comprises the thicknesses of the film layers constituting the display assembly 2.

[0107] It should be understood that, with the change of the process, the film layers included in the display assembly 2 are not limited to the film layers shown in Figure 8 , for example, the new process makes the support 27 in Figure 8 be removed, at this time the display assembly 2 does not contain the support 27, and for example, the new process makes a new film layer added in Figure 8 , the display assembly 2 needs to contain the new film layer.

[0108] In the embodiments provided by the present application, by setting the thickness d of the first sealing edge layer 31 to be greater than the thickness d' of the display assembly 2, the edges of the film layers constituting the display assembly 2 are conveniently integrally packaged.

[0109] Please continue to refer to Figure 3 , the projection of the bending portion 22a on the cover plate 1 at least partially overlaps the projection of the first sealing edge layer 31 on the cover plate 1, for example, the projection of the bending portion 22a on the cover plate 1 can partially overlap the projection of the first sealing edge layer 31 on the cover plate 1.

[0110] As shown in Figure 3 , the bending portion 22a can also be completely located in the first sealing edge layer 31, that is, the projection of the bending portion 22a on the cover plate 1 is located in the projection of the first sealing edge layer 31 on the cover plate 1.

[0111] As shown in Figure 9 , the projection of the bending portion 22a on the cover plate 1 can be partially located in the first sealing edge layer 31 and partially located in the second sealing edge layer 32.

[0112] In the embodiments provided by the present application, by making the projection of the bending portion 22a on the cover plate 1 at least intersect the projection of the first sealing edge layer 31 on the cover plate 1, the material range of the first sealing edge layer 31 can be wider.

[0113] In the embodiments provided by the present application, by making the projection of the bending portion 22a on the cover plate 1 be located in the projection of the first sealing edge layer 31 on the cover plate 1, a higher flowability adhesive material can be selected as the material of the first sealing edge layer 31, which is convenient for forming the first sealing edge layer 31.

[0114] In some embodiments, the viscosity of the material used by the first sealing edge layer 31 is at least 0.1 times smaller than the viscosity of the material used by the second sealing edge layer 32.

[0115] For example, the viscosity of the material used for the first edge sealing layer 31 is 100 cps, and the viscosity of the material used for the second edge sealing layer 32 can be 2000 cps.

[0116] In the embodiments provided by the present application, by setting the viscosity of the material used for the first edge sealing layer 31 to be at least less than 0.1 times the viscosity of the material used for the second edge sealing layer 32, the viscosity of the material used for the first edge sealing layer 31 is much smaller than the viscosity of the material used for the second edge sealing layer 32, which can reduce the flowability of the material used for the second edge sealing layer 32 in the process of preparing the second edge sealing layer 32, thereby effectively avoiding the glue siphon abnormality and the glue surface pit defect caused by the siphon, improving the flatness of the second edge sealing layer 32 away from the first edge sealing layer 31, and enabling the second edge sealing layer 32 to be flush with the edge of the cover plate 1.

[0117] In some embodiments, the material used for the first edge sealing layer 31 includes a first adhesive, and the material used for the second edge sealing layer 32 includes a second adhesive, and the first adhesive and the second adhesive are the same type of adhesive.

[0118] For example, the first adhesive and the second adhesive are both acrylate adhesives, the first adhesive can be acrylate adhesive UV-1 with a viscosity of 100 cps, and the second adhesive can be acrylate adhesive UV-2 with a viscosity of 2000 cps.

[0119] In the embodiments provided by the present application, by selecting the materials used for the first edge sealing layer 31 and the second edge sealing layer 32 to be the same type of adhesive with different viscosities, the affinity of the materials used for the first edge sealing layer 31 and the second edge sealing layer 32 can be improved when filling the materials, and the stability of the final edge sealing structure 3 is higher.

[0120] For example, when the viscosity of the first adhesive is greater than the first value, the flowability of the first adhesive is not too high, and the first adhesive can not flow into or completely fill the bending space of the flexible circuit board 22, and the first edge sealing layer 31 can not be filled into the bending space of the flexible circuit board 22 as shown in Figure 10 For example, when the viscosity of the first adhesive is greater than the first value, the flowability of the first adhesive is not too high, and the first adhesive can not flow into or completely fill the bending space of the flexible circuit board 22, and the first edge sealing layer 31 can not be filled into the bending space of the flexible circuit board 22 as shown in Figure 10 The filling diagram of the first edge sealing layer provided by the embodiments of the present application; the viscosity of the first adhesive is less than the second value (i.e. 0.1 times the viscosity of the material used for the second edge sealing layer 32), and the flowability of the first adhesive is relatively large, so that the first adhesive can flow into the bending space and even fill it, and the first edge sealing layer 31 can be filled into the bending space of the flexible circuit board 22 to form a bending part 22a as shown in Figure 3 The bending part 22a formed by the first edge sealing layer 31 filled into the bending space of the flexible circuit board 22 and the space surrounded by the display panel 21, and the bending part 22a is supported from the inside of the space, thereby improving the strength of the bending part 22a and effectively protecting the bending part 22a.

[0121] Please refer to Figure 11This is a structural diagram of another display device provided by an embodiment of the present invention. The second edge sealing layer 32 , which is farthest from the first edge sealing layer 31 , has its second surface 32 a away from the first edge sealing layer 31 flush with the side surface of the cover plate 1 .

[0122] The edge sealing structure 3 can be as follows Figure 10 As shown, it includes a second edge sealing layer 32. At this time, this second edge sealing layer 32 is regarded as the second edge sealing layer 32 farthest from the first edge sealing 31. The edge sealing structure 3 may include multiple layers of second edge sealing layers 32, such as Figure 11 The edge sealing structure 3 shown includes two second edge sealing layers 32 . The second edge sealing layer 32 , which is farthest from the first edge sealing layer 31 , has a second surface 32 a thereof which is away from the first edge sealing layer 31 and is flush with the side surface of the cover plate 1 .

[0123] In the embodiment provided by the present invention, the second edge sealing layer 32 farthest from the first edge sealing layer 31 is flush with the side surface 32a of the cover plate 1. Figure 1 The middle frame 4 ′ shown in FIG. 1 overlaps with the edge sealing structure 3 , thereby protecting the edge of the cover plate 1 and preventing the edge of the cover plate 1 from being damaged.

[0124] See Figure 12 This is a schematic structural diagram of another display device provided by an embodiment of the present invention, wherein the display device further includes:

[0125] The middle frame 4 includes a main body 41 and a frame 42 connected to each other; the frame 42 extends from the main body 41 toward the cover 1, and the extension directions of the frame 42 and the main body 41 are different;

[0126] The frame 42 abuts against a side of the edge sealing structure 3 away from the flexible circuit board 22 , and the body 41 abuts against a side of the edge sealing structure 3 away from the cover 1 .

[0127] By setting the middle frame 4 as a main body 41 connected to each other and a frame 42 extending from the main body 41 toward the cover plate 1, and allowing the frame 42 to abut against the side of the edge sealing structure 3 away from the flexible circuit board 22, and the main body 41 to abut against the side of the edge sealing structure 3 away from the cover plate 1, the middle frame 4 can be overlapped with the edge sealing structure 3 to protect the cover plate 1 and reduce the risk of edge breakage of the cover plate 1.

[0128] The display device provided in the embodiment of the present invention can be a liquid crystal display device, such as a liquid crystal display, a liquid crystal display screen, a liquid crystal television, etc.; it can also be an electroluminescent display device, such as an electroluminescent display, an electroluminescent display screen, an electroluminescent television, etc., and can also be a mobile device such as a mobile phone, a tablet computer, and a notebook.

[0129] Based on the same inventive concept, see Figure 13 A flowchart of a method for manufacturing a display device is provided in accordance with an embodiment of the present invention. The method includes:

[0130] S11: providing a cover plate 1 and a display assembly 2; the display assembly 2 is located on one side of the cover plate 1, and the display assembly 2 comprises a display panel 21 and a flexible circuit board 22 which is bound to the display panel 21; the display panel 21 comprises a first edge 21a, and the flexible circuit board 22 is located on one side of the first edge 21a;

[0131] S12: forming an edge sealing structure 3 on the side of the cover plate 1 close to the display assembly 2; the edge sealing structure 3 comprises a first edge sealing layer 31 and at least one second edge sealing layer 32, and the bending part 22a of the flexible circuit board 22 is located in the projection of the edge sealing structure 3 on the cover plate 1; the first edge sealing layer 31 covers at least the first edge 21a and extends to the edge of the cover plate 1; in the direction parallel to the display panel 21, the first face 31a of the first edge sealing layer 31 away from the display panel 21 is recessed toward the side of the display panel 21, and the at least one second edge sealing layer 32 is filled in the recessed space a1 of the first face 31a.

[0132] The specific structure of the display device formed by the above manufacturing method can be referred to the introduction of the display device, which will not be repeated here.

[0133] Please refer to Figure 14 A schematic diagram of forming an edge sealing structure is provided for the embodiment of the present application, and the edge sealing structure 3 is formed on the side of the cover plate 1 close to the display assembly 2, which can be realized by the following way:

[0134] Please refer to Figure 14 A schematic diagram of forming an edge sealing structure is provided for the embodiment of the present application. The edge sealing structure 3 is formed on the side of the cover plate 1 close to the display assembly 2, which can be realized by the following way:

[0135] S21: turning the display assembly 2 and the cover plate 1 together by 90°, so that the display panel 21 and the cover plate 1 are perpendicular to the ground plane; and setting a jig 5 on the side of the display assembly 2 away from the cover plate 1, and the side of the jig 5 away from the ground plane is flush with the side of the cover plate 1 away from the ground plane.

[0136] Please refer to Figure 15 and Figure 16 A schematic diagram of the relationship between the display device and the jig is provided for the embodiment of the present application, Figure 15 In the embodiment, the length L of the jig 5 is the same as the width W of the flexible circuit board 22, Figure 16 In the embodiment, the length L of the jig 5 is greater than the width W of the flexible circuit board 22. After setting the jig 5, the two ends of the jig 5 need to be sealed, which can be sealed by a specific tool or by glue, and the specific sealing method is not limited. For sealing the two ends of the jig 5 by the tool, the corresponding sealing tool needs to be removed when the jig 5 is removed. For sealing the two ends of the jig 5 by the glue, the glue used for sealing can be reserved.

[0137] Before setting the jig 5, a release material needs to be coated on the side of the jig 5 close to the cover plate 1, so as to facilitate demolding when the jig 5 is removed; or the side of the jig 5 close to the cover plate 1 is provided with a release coating, so that it is not necessary to coat the release material every time the jig 5 is set, thereby effectively improving the production efficiency.

[0138] In some embodiments, the release material or the release coating can be made of silica gel, Teflon, etc.

[0139] In addition, before S21 is implemented, the display device needs to be cleaned, for example, plasma cleaning can be used.

[0140] S22: Fill the first adhesive into the groove b surrounded by the cover plate 1, the display assembly 2 and the jig 5.

[0141] The first adhesive can be filled into the groove b by using a direct writing valve, the diameter of the direct writing valve ranges from 200 to 400 um, the coating speed ranges from 20 to 40 mm / s, the spraying air pressure ranges from 80 psi, and the first adhesive can be selected from acrylate UV-1, the corresponding viscosity ranges from 100 to 400 cps, the shear strength ranges from 75 to 85 N, and the corresponding modulus ranges from 60 to 72 MPa. The first adhesive can be filled by the direct writing valve at one time, and the filling height of the first adhesive ranges from 1.3 to 2.1 mm.

[0142] S23: Fill the second adhesive into the corresponding recessed space a1 of the first side 31a of the first edge sealing layer 31 away from the display panel 21.

[0143] The second adhesive can be filled into the corresponding recessed space a1 of the first side 31a of the first edge sealing layer 31 away from the display panel 21 by using a piezoelectric valve. The diameter of the piezoelectric valve ranges from 80 to 100 um, and the printing speed ranges from 80 to 200 mm / s.

[0144] The filling height of the second adhesive ranges from 1 to 1.5 mm.

[0145] The second adhesive can be selected from acrylate UV-1, the corresponding viscosity ranges from 11500 to 3500 cps, the compressive strength ranges from 20 to 70 MPa, and the leveling time is 15 to 30 s, which makes the viscosity of the second adhesive high and the flowability poor, thereby effectively avoiding the glue siphon abnormality and the glue surface pit defect caused by siphon.

[0146] S24: Solidify the first adhesive and the second adhesive to form the first edge sealing layer 31 and the second edge sealing layer 32, and remove the jig 5.

[0147] The first edge 21a is formed by the first edge structure 3. Figure 2 The first edge 21a is formed by the first edge structure 3.

[0148] If the first edge structure 3 extending around the edge of the cover plate 1 to the edge of the display panel 21 is needed, the jig 5 is arranged on the side of the display assembly 2 away from the cover plate 1, and the first adhesive is filled in the groove b surrounded by the jig 5, the display assembly 2 and the cover plate 1, which can be achieved by the following method:

[0149] The edge of the display panel 21 is divided into a plurality of sub-edges connected in sequence; wherein the first edge 21a is one of the plurality of sub-edges;

[0150] From a specified sub-edge in the plurality of sub-edges, a corresponding sub-jig 51 is sequentially arranged for each sub-edge in a preset direction; wherein the two ends of the sub-jig 51 are blocked.

[0151] After the sub-jig 51 corresponding to each sub-edge is arranged, the first adhesive is filled in the sub-groove b1 surrounded by the sub-jig 51 corresponding to the sub-edge, the cover plate 1 and the display assembly 2, until the sub-groove b1 corresponding to each sub-edge is filled.

[0152] Please refer to Figure 17 A schematic diagram for forming the first edge structure is provided for the embodiment of the present application, Figure 17 The display panel 21 is taken as a rectangle with rounded corners as an example for illustration.

[0153] S31: The edge of the display panel 21 is divided into four sub-edges connected in sequence, denoted as m1, m2, m3 and m4.

[0154] S32: From a specified sub-edge in the four sub-edges, a corresponding sub-jig 51 is sequentially arranged for each sub-edge in a preset direction; after the sub-jig 51 corresponding to each sub-edge is arranged, the first adhesive is filled in the sub-groove b1 surrounded by the sub-jig 51 corresponding to the sub-edge, the cover plate 1 and the display assembly 2, until the sub-groove b1 corresponding to each sub-edge is filled, to form the first edge structure 3; wherein the two ends of the sub-jig 51 are blocked.

[0155] The sub-edge m1 is taken as the specified sub-edge, and the preset direction is the clockwise direction; the corresponding sub-jig 51 is sequentially arranged for the sub-edges m1-m4; after the sub-jig 51 corresponding to each sub-edge is arranged, the first adhesive is filled in the sub-groove b1 surrounded by the sub-jig 51 corresponding to the sub-edge, the cover plate 1 and the display assembly 2, until the sub-groove b1 corresponding to each sub-edge is filled, to form the first edge structure 3, which is specifically as follows:

[0156] S321: Set the corresponding sub-jig 51 for the sub-edge m1, and fill the first adhesive in the sub-recess b1 (shown in S322) surrounded by the sub-edge m1, the corresponding sub-jig 51, the display panel 21 and the cover plate 1, and then remove the corresponding sub-jig 51 set for the sub-edge m1; wherein the two ends of the sub-recess b1 are blocked, which can be referred to the blocking method in S21, and will not be described here.

[0157] S322: Set the corresponding sub-jig 51 for the sub-edge m2, and fill the first adhesive in the sub-recess b1 (shown in S323) surrounded by the sub-edge m2, the corresponding sub-jig 51, the display panel 21 and the cover plate 1, and then remove the corresponding sub-jig 51 set for the sub-edge m2; wherein the two ends of the sub-recess b1 are blocked.

[0158] Since the end of the sub-recess b1 corresponding to the sub-edge m2 close to the sub-edge m1 has been blocked by the filled first adhesive, it is only necessary to block the end of the sub-recess b1 corresponding to the sub-edge m2 close to the sub-edge m3 with a blocking tool or glue.

[0159] S323: Set the corresponding sub-jig 51 for the sub-edge m3, and fill the first adhesive in the sub-recess b1 (shown in S324) surrounded by the sub-edge m3, the corresponding sub-jig 51, the display panel 21 and the cover plate 1, and then remove the corresponding sub-jig 51 set for the sub-edge m3; wherein the two ends of the sub-recess b1 are blocked.

[0160] Since the end of the sub-recess b1 corresponding to the sub-edge m3 close to the sub-edge m2 has been blocked by the filled first adhesive, it is only necessary to block the end of the sub-recess b1 corresponding to the sub-edge m3 close to the sub-edge m4 with a blocking tool or glue.

[0161] S324: Set the corresponding sub-jig 51 for the sub-edge m4, and fill the first adhesive in the sub-recess b1 surrounded by the sub-edge m4, the corresponding sub-jig 51, the display panel 21 and the cover plate 1, and then remove the corresponding sub-jig 51 set for the sub-edge m4; wherein the two ends of the sub-recess b1 are blocked.

[0162] Since the two ends of the sub-recess b1 corresponding to the sub-edge m4 have been blocked by the filled first adhesive, there is no need to block the two ends of the sub-recess b1 corresponding to the sub-edge m4 with a blocking tool or glue.

[0163] S325: Complete the filling of the first adhesive of the first edge sealing layer 31 corresponding to all sub-edges.

[0164] Then, the first adhesive can be cured by a ultraviolet light source to form the first edge sealing layer 31. The wavelength range of the ultraviolet light source is 365-395 nm, the value range of the illuminance is 200-600 mw, the value range of the irradiation time is 20-30 s, and the value range of the total energy is 10000-15000 mj.

[0165] It needs to be understood that, in order to facilitate observation of the sub-groove b1, the sub-groove b1 of the previous step is marked in the diagram of the next step, such as the sub-groove b1 corresponding to the sub-edge m1, which is marked in S322. Before setting the sub-jig 51 in S321-S325, a demolding material needs to be coated on the side of the sub-jig 51 close to the cover plate 1, so as to facilitate removal of the sub-jig 51. The shape of the display panel 21 can also be circular or other shapes, which are not limited in particular.

[0166] In some embodiments, the sub-jig 51 corresponding to the sub-edge is filled with the first adhesive in the sub-groove b1 surrounded by the cover plate 1 and the display assembly 2, which can be achieved in the following ways:

[0167] The sub-groove b1 is scanned to determine the first containing volume of the sub-groove b1; the first filling amount of the first adhesive is determined according to the first containing volume; and the first adhesive is filled into the sub-groove b1 according to the first filling amount.

[0168] For example, the first adhesive is filled into the sub-groove b1 corresponding to the sub-edge m1 in the following way: Figure 17 For example, the first adhesive is filled into the sub-groove b1 corresponding to the sub-edge m1 in the following way:

[0169] When the sub-groove b1 is the sub-groove b1 corresponding to other sub-edges, the first adhesive is filled into the sub-groove b1 corresponding to the sub-edge m1 in the same way, which is not described here again.

[0170] In the embodiments provided in the present application, the first containing volume of the sub-groove b1 is determined by scanning the sub-groove b1; then the first filling amount of the first adhesive is determined according to the first containing volume; and finally the first adhesive is filled into the sub-groove b1 according to the first filling amount, so that the first adhesive can be accurately filled into the sub-groove b1.

[0171] In other embodiments, the filling amount of the first adhesive filled into the sub-groove b1 corresponding to each sub-edge can also be determined by experience, so that a laser radar scanner is not needed, saving equipment investment.

[0172] In some embodiments, the second adhesive is filled on the side of the first adhesive away from the display panel 21, which can be achieved in the following ways:

[0173] After filling the sub-groove b1 corresponding to each sub-edge, the surface of the first adhesive away from the corresponding sub-edge is scanned,

[0174] The second containing volume of the sub-depression space a11 in which the surface of the first adhesive away from the corresponding sub-edge is recessed towards the corresponding sub-edge is determined.

[0175] The second filling amount of the second adhesive is determined according to the second containing volume.

[0176] The second adhesive is filled into the sub-depression space a11 according to the second filling amount.

[0177] The surface of the first adhesive away from the sub-edge m2 is filled with the second adhesive in the sub-groove b1 corresponding to the sub-edge m2. Figure 17 The surface of the first adhesive away from the sub-edge m2 is filled with the second adhesive in the sub-groove b1 corresponding to the sub-edge m2. Figure 18 A schematic diagram of filling the second adhesive is provided for the embodiment of the present application.

[0178] S41: After filling the first adhesive into the sub-groove b1 surrounded by the sub-jig 51, the display assembly 2 and the cover plate 1 corresponding to the sub-edge m2, the surface of the first adhesive away from the sub-edge m2 is scanned by a laser scanner to determine the second containing volume of the sub-depression space a11.

[0179] S42: The second filling amount of the second adhesive is determined according to the second containing volume, and the second adhesive is filled into the sub-depression space a11 according to the second filling amount.

[0180] Figure 17 The filling mode of the second adhesive corresponding to the remaining sub-edges can be filled in the same way as S41-S42, and after filling all the second adhesives corresponding to the sub-edges, the first adhesive and the second adhesive can be cured by ultraviolet light to form the first edge sealing layer 31 and the second edge sealing layer 32.

[0181] If the first adhesive corresponding to each sub-edge can be in a solid or semi-solid state after being filled, i.e. the shape and appearance do not change, the second adhesive corresponding to each sub-edge can also be filled after filling all the first adhesives corresponding to the sub-edges. The first adhesive can be in a solid or semi-solid state after being filled for a period of time, or cured by ultraviolet light, etc. The specific way of using the first adhesive in a solid or semi-solid state is not limited herein.

[0182] It should be understood that, Figure 18 The display assembly 2 includes a display panel 21 and a heat dissipation film 26 located on the side of the display panel 21 away from the cover plate 1, and in actual application, the display assembly 2 can also include other film layers such as Figure 8 as shown.

[0183] In the embodiment provided by the present application, the second containing volume of the sub-depression space a11 of the side of the first adhesive away from the corresponding sub-edge is determined by scanning the side of the first adhesive away from the corresponding sub-edge after filling the corresponding sub-groove b1, the second filling amount of the second adhesive is determined according to the second containing volume, and the sub-depression space a11 of the side of the first adhesive away from the corresponding sub-edge is filled with the second adhesive according to the second filling amount, so that the sub-depression space a11 of the side of the first adhesive away from the corresponding sub-edge can be accurately filled.

[0184] In some embodiments, the second filling amount can also be pre-set according to experience, so that scanning by the laser scanner is not necessary, thereby reducing the equipment cost. If the second filling amount pre-set according to experience is too much, the side of the second adhesive away from the first adhesive protrudes from the corresponding side of the cover plate 1, the side of the second adhesive away from the first adhesive can be flattened by using a flattening process, or the second edge sealing layer 32 protruding from the side of the cover plate 1 away from the first adhesive can be removed by using a milling cutter after the second adhesive is solidified, so that the side of the second edge sealing layer 32 away from the first adhesive is flush with the side of the cover plate 1 away from the first adhesive.

[0185] Please refer to Figure 19 Another schematic diagram for forming the second edge sealing layer provided by the embodiment of the present application is shown in the following figure. Before the jig 5 is removed after the second adhesive is solidified, the flatness of the side of the second edge sealing layer 32 away from the display panel 21 needs to be detected, which is achieved by the following method:

[0186] S51: scanning the side of the second edge sealing layer 32 away from the first edge sealing layer 31; and determining whether the flatness of the side of the second edge sealing layer 32 away from the first edge sealing layer 31 is less than or equal to the preset flatness according to the scanning result.

[0187] For example, assuming that the preset flatness is 50um, the side of the second edge sealing layer 32 away from the first edge sealing layer 31 can be scanned by using a laser scanner, so as to determine whether the flatness of the side of the second edge sealing layer 32 away from the first edge sealing layer 31 is less than or equal to 50um.

[0188] S52: if not, the side of the second edge sealing layer 32 away from the first edge sealing layer 31 is flattened by using the second adhesive and solidified until the flatness of the side of the newly formed second edge sealing layer 32 away from the first edge sealing layer 31 is less than or equal to the preset flatness; wherein the side of the newly formed second edge sealing layer 32 away from the first edge sealing layer 31 is flush with the side of the cover plate 1.

[0189] In the embodiments provided by the present application, one side of the second sealing layer 32 far away from the first sealing layer 31 is scanned; and whether the flatness of the one side of the second sealing layer 32 far away from the first sealing layer 31 is less than or equal to a preset flatness is determined according to the scanning result; if not, the one side of the second sealing layer 32 far away from the first sealing layer 31 is leveled with the second adhesive, and is solidified until the flatness of the one side of the second sealing layer 32 far away from the first sealing layer 31 formed by the latest solidification is less than or equal to the preset flatness; wherein the one side of the second sealing layer 32 far away from the first sealing layer 31 formed by the latest solidification is flush with the side of the cover plate 1, which can make the one side of the multi-layer second sealing layer 32 far away from the first sealing layer 31 flush with the side of the cover plate 1.

[0190] As shown in Figure 17 , the edge shape of the display panel 21 is a rectangle with rounded corners; the rectangle is divided into four sub-edges, and at least two of the four sub-edges contain rounded corners.

[0191] As shown in Figure 17 , the orthogonal projection shape of the sub-edge on the cover plate 1 is the same as the orthogonal projection shape of the sub-jig 51 corresponding to the sub-edge on the cover plate 1; the sub-jig 51 corresponding to each sub-edge contains rounded corners, Figure 17 , the shapes of the sub-jigs 51 corresponding to the sub-edges m2 and m4 in Figure 20 may be the same as the sub-jigs 51 shown in Figure 16 , and the sub-jigs 51 corresponding to the sub-edges m1 and m3 in Figure 20 have two rounded corners, is a top view of a sub-jig provided by an embodiment of the present application.

[0192] Figure 13 The cross-sectional shape of the jig 5 or the sub-jig 51 in the thickness direction of the display panel 21 can be a rectangle as shown in Figure 21 , or an L shape as shown in Figure 21 is a cross-sectional view of a sub-jig provided by an embodiment of the present application, the vertical part of the L shape is parallel to the cover plate 1, and the horizontal part of the L shape is perpendicular to the display panel 21 and abuts against the side of the display panel 21 far away from the cover plate 1.

[0193] The release material is coated on the side of the L shape close to the cover plate 1, and this side is also an L shape; or a release coating is provided on the side of the L shape close to the cover plate 1.

[0194] As shown in Figure 21 , the height h' of the glue blocking of the sub-jig 51 (i.e. the height of the vertical part) is in the range of 1.4-2.2mm, and the width of the vertical part of the sub-jig 51 is in the range of 1.0-1.7mm.

[0195] Please refer to Figure 22A process flow chart for forming the edge sealing structure is provided. The process flow chart comprises: feeding in → cleaning front and back surfaces → cleaning organic matter (plasma cleaning) → surrounding by the jig 5 → topography scanning → filling the first adhesive → topography scanning → filling the second adhesive → automatic optical inspection → curing → demolding the jig 5 → feeding out. The feeding in refers to the display assembly 2 and the cover plate 1, and the feeding out refers to the display device provided with the edge sealing structure 3.

[0196] Although preferred embodiments of the application have been described herein, changes and modifications can be suggested to one skilled in the art, and it is intended that the application encompass such changes and modifications as fall within the scope of the appended claims.

[0197] Obviously, numerous modifications and variations of the present application are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims and their equivalents, the application can be practiced otherwise than as specifically described.

Claims

1. A display device, characterized in that: include: cover; A display assembly is located on one side of the cover plate; the display assembly includes a display panel and a flexible circuit board bound to the display panel; the display panel includes a first side, and the flexible circuit board is located on one side of the first side; an edge sealing structure located on a side of the cover plate close to the display assembly, the edge sealing structure comprising a first edge sealing layer and at least one second edge sealing layer, the orthographic projection of the bent portion of the flexible circuit board on the cover plate being located within the orthographic projection of the edge sealing structure on the cover plate; The first edge sealing layer at least covers the first edge and extends to the edge of the cover plate; In a direction parallel to the display panel, a first surface of the first edge sealing layer away from a side of the display panel is recessed toward a side of the display panel, and the at least one second edge sealing layer fills the recessed space of the first surface.

2. The display device according to claim 1, wherein A side of the first edge sealing layer away from the second edge sealing layer is indented relative to an edge of the display panel.

3. The display device according to claim 1, wherein A second surface of the second edge sealing layer, which is farthest from the first edge sealing layer and is away from the first edge sealing layer, is flush with the side surface of the cover plate.

4. The display device according to claim 1, wherein The orthographic projection of the bent portion on the cover plate at least partially overlaps with the orthographic projection of the first edge sealing layer on the cover plate.

5. The display device according to claim 1, wherein The orthographic projection of the bent portion on the cover plate is located within the orthographic projection of the first edge sealing layer on the cover plate.

6. The display device according to claim 1, wherein The viscosity of the material of the first edge sealing layer is at least less than 0.1 times the viscosity of the material of the second edge sealing layer.

7. The display device according to claim 6, wherein The material used for the first edge sealing layer includes a first adhesive; The material used for the second edge sealing layer includes a second adhesive, and the first adhesive and the second adhesive are the same type of adhesive.

8. The display device according to claim 1, wherein In the thickness direction of the cover plate, the thickness of the first edge sealing layer is greater than the thickness of the display assembly.

9. The display device according to claim 1, wherein The display device further includes: A middle frame, the middle frame comprising a main body and a frame body connected to each other; the frame body extends from the main body toward the cover plate, and the frame body and the main body extend in different directions; The frame abuts against a side of the edge sealing structure away from the flexible circuit board, and the main body abuts against a side of the edge sealing structure away from the cover plate.

10. The display device according to any one of claims 1 to 9, wherein: The first edge sealing layer is arranged around the edge of the cover plate, and the first edge sealing layer at least covers the edge of the display panel and extends to the edge of the cover plate; The first surface is arranged around the edge of the cover plate.

11. A method for manufacturing a display device, characterized in that: include: A cover plate and a display assembly are provided; the display assembly is located on one side of the cover plate, and the display assembly includes a display panel and a flexible circuit board bound to the display panel; the display panel includes a first side, and the flexible circuit board is located on one side of the first side; An edge sealing structure is formed on a side of the cover plate close to the display assembly; the edge sealing structure includes a first edge sealing layer and at least one second edge sealing layer, and the orthographic projection of the bent portion of the flexible circuit board on the cover plate is located within the orthographic projection of the edge sealing structure on the cover plate; The first edge sealing layer at least covers the first edge and extends to the edge of the cover plate; In a direction parallel to the display panel, a first surface of the first edge sealing layer away from a side of the display panel is recessed toward a side of the display panel, and the at least one second edge sealing layer fills the recessed space of the first surface.

12. The production method according to claim 11, wherein: On a side of the cover plate close to the display assembly, an edge sealing structure is formed, comprising: Flip the display assembly and the cover plate together by 90° so that the display panel and the cover plate are perpendicular to the ground plane; A jig is provided on a side of the display assembly away from the cover plate, wherein a side of the jig away from the ground plane is flush with a side of the cover plate away from the ground plane; Filling a first adhesive into a groove formed by the fixture, the display assembly, and the cover plate; Filling a second adhesive on a side of the first adhesive away from the display panel; curing the first adhesive and the second adhesive to form the first edge sealing layer and the second edge sealing layer; The jig is removed.

13. The production method according to claim 12, characterized in that: A jig is provided on a side of the display assembly away from the cover plate, and a first adhesive is filled in a groove formed by the jig, the display assembly and the cover plate, including: Dividing the edge of the display panel into a plurality of sub-edges connected in sequence; wherein the first edge is one of the plurality of sub-edges; Starting from a designated sub-edge among the plurality of sub-edges, a corresponding sub-jig is sequentially set for each sub-edge in a preset direction; wherein both ends of the sub-jig are blocked; After each sub-jig corresponding to a sub-side is set, the first adhesive is filled into the sub-groove formed by the sub-jig corresponding to the sub-side, the cover plate and the display assembly until the sub-groove corresponding to each sub-side is filled.

14. The production method according to claim 13, wherein: Filling the first adhesive into the sub-groove formed by the sub-jig corresponding to the sub-side, the cover plate, and the display assembly, comprising: Scanning the sub-groove to determine a first accommodation volume of the sub-groove; determining a first filling amount of the first adhesive according to the first accommodation volume; The first adhesive is filled into the sub-groove according to the first filling amount.

15. The production method according to claim 13 or 14, characterized in that: Filling a second adhesive on a side of the first adhesive away from the display panel comprises: After each sub-groove corresponding to a sub-edge is filled, the side of the first adhesive away from the corresponding sub-edge is scanned. determining a second accommodation volume of a sub-recessed space of the first adhesive that is recessed toward the corresponding sub-side on a side away from the corresponding sub-side; determining a second filling amount of the second adhesive according to the second accommodation volume; The sub-recess space is filled with the second adhesive according to the second filling amount.

16. The production method according to any one of claims 12 to 14, characterized in that: After curing the second binder and before removing the jig, the method further includes: Scanning a side of the second edge sealing layer away from the first edge sealing layer; Determining, based on the scanning result, whether the flatness of a side of the second edge sealing layer away from the first edge sealing layer is less than or equal to a preset flatness; If not, use the second adhesive to level the side of the second edge sealing layer away from the first edge sealing layer and cure it until the flatness of the side of the newly cured second edge sealing layer away from the first edge sealing layer is less than or equal to the preset flatness; wherein the side of the newly cured second edge sealing layer away from the first edge sealing layer is flush with the side of the cover plate.

17. The production method according to claim 13 or 14, characterized in that: The edge shape of the display panel is a rectangle with rounded corners; the rectangle is divided into four sub-sides, and at least two of the four sub-sides include the rounded corners.

18. The production method according to claim 17, wherein: The cross-sectional shape of the sub-jig along the thickness direction of the display panel is L-shaped; the vertical portion of the L-shape is parallel to the cover plate, and the horizontal portion of the L-shape is perpendicular to the display panel and abuts against the side of the display panel away from the cover plate.

Images