Display device

Abstract

The utility model provides a display device. The display device comprises a cover plate; the display component is positioned on one side of the cover plate; the display assembly comprises a display panel, a heat dissipation plate located on the side, away from the cover plate, of the display panel and a flexible circuit board bound with the display panel, the heat dissipation plate comprises a first edge and a second edge, the two ends of the first edge and the two ends of the second edge are connected, and the flexible circuit board is arranged close to the first edge and attached to the side, away from the display panel, of the heat dissipation plate after being bent; the edge sealing structure at least covers the edge of the first edge of the heat dissipation plate and extends to be close to the edge of the cover plate; the edge sealing structure comprises a first fence, a second fence and a filling layer. The first enclosure is located on the side, close to the display panel, of the cover plate and at least arranged along the edge, corresponding to the first edge, of the cover plate. The second fence is located on the side, away from the cover plate, of the heat dissipation plate and at least arranged along the first edge of the heat dissipation plate. The filling layer is filled in a first groove defined by the first enclosure, the second enclosure, the display assembly and the cover plate, and the bending area of the flexible circuit board is located in the first groove.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a display device. Background Art

[0002] In conventional mobile phone products, it is necessary to consider the lamination accuracy of the cover plate 1', the bending accuracy of the flexible printed circuit (FPC) 2', the thickness accuracy of the metal cover layer (Metal Cover Layer, MCL) glue layer 3' on the surface of the flexible printed circuit 2', and the minimum overlap space required by the whole machine middle frame 4' (such as Figure 1 The figure shows a schematic diagram of the overlap between the middle frame and the cover plate in a conventional mobile phone). The middle frame 4' has an assembly accuracy deviation, and a gap needs to be reserved to ensure that the middle frame 4' and the FPC do not contact each other. Therefore, the distance d' between the edge of the cover plate 1' and the vertex of the bending area of ​​the flexible circuit board 2' is affected by multiple factors, making the value of d' larger.

[0003] Therefore, how to reduce the distance between the edge of the cover plate and the vertex of the bending area of ​​the flexible circuit board to achieve a narrow frame design has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The embodiments of the present utility model provide a display device to solve the above-mentioned technical problems existing in the prior art.

[0005] In a first aspect, in order to solve the above technical problems, an embodiment of the utility model provides a display device, comprising:

[0006] Cover plate;

[0007] A display assembly is located on one side of the cover plate; the display assembly includes a display panel, a heat sink located on a side of the display panel away from the cover plate, and a flexible circuit board bound to the display panel, the edge of the heat sink is indented relative to the edge of the display panel, the heat sink includes a first side and a second side, two ends of the first side are connected to two ends of the second side, the flexible circuit board is arranged close to the first side, and the flexible circuit board is attached to the side of the heat sink away from the display panel after being bent;

[0008] A sealing structure at least covers the edge of the first side of the heat sink and extends to the edge close to the cover plate; the sealing structure includes a first enclosure, a second enclosure and a filling layer; the first enclosure is located on a side of the cover plate close to the display panel, and is at least arranged along the edge of the cover plate corresponding to the first side; the second enclosure is located on a side of the heat sink away from the cover plate, and is at least arranged along the first side of the heat sink; the filling layer is filled in a first groove jointly surrounded by the first enclosure, the second enclosure, the display assembly and the cover plate, and the bending area of ​​the flexible circuit board is located in the first groove.

[0009] In a possible implementation manner, the edge sealing structure surrounds and covers the edge of the heat dissipation plate and extends to an edge close to the cover plate;

[0010] The first enclosure surrounds the edge of the cover plate, and the side of the first enclosure away from the second enclosure is close to the edge of the cover plate; the second enclosure surrounds the edge of the heat sink, and the side of the second enclosure close to the first enclosure is indented relative to the edge of the heat sink.

[0011] In a possible implementation manner, the first enclosure includes multiple layers of first sub-enclosures stacked together, and the first sub-enclosures are arranged around the edge of the cover plate; the second enclosure includes multiple layers of second sub-enclosures stacked together, and the second sub-enclosures are arranged around the edge of the heat sink;

[0012] The longitudinal section area of ​​the second sub-enclosure corresponding to the first side is smaller than the longitudinal section area of ​​the second sub-enclosure corresponding to the second side.

[0013] In a possible implementation manner, an orthographic projection of the first sub-enclosure on the cover plate has no overlap with an orthographic projection of the display assembly on the cover plate.

[0014] In a possible implementation manner, the display device further includes:

[0015] The ink layer is located on a side of the cover plate close to the display panel; the edge of the ink layer has an annular groove arranged around the edge of the cover plate; the orthographic projection of the first sub-enclosure on the cover plate is located within the orthographic projection of the annular groove on the cover plate.

[0016] In a possible implementation manner, at least a first layer of the first sub-enclosure in the first enclosure is black in color, and the first layer of the first sub-enclosure is a layer of the first sub-enclosure that is closest to the cover plate among the multiple layers of the first sub-enclosure.

[0017] In a possible implementation manner, the first sub-enclosure includes:

[0018] A first retaining wall and a second retaining wall connected end to end and having the same height; wherein the first retaining wall is located on a side of the first side away from the second enclosure, the second retaining wall is located on a side of the second side away from the second enclosure, and the longitudinal section area of ​​the first retaining wall is smaller than the longitudinal section area of ​​the second retaining wall; the orthographic projection of the first retaining wall on the cover plate has no overlap with the orthographic projection of the display component on the cover plate, and the orthographic projection of the second retaining wall on the cover plate has overlap with the orthographic projection of the display component on the cover plate.

[0019] In a possible implementation manner, the first enclosure includes multiple layers of the first retaining walls that are arranged in an overlapping manner;

[0020] In the direction in which the second retaining wall is away from the cover plate, the multiple layers of the second retaining walls included in the first enclosure are retracted in sequence.

[0021] In a possible implementation manner, the first enclosure includes two layers of the second retaining wall stacked together;

[0022] The second retaining wall of the first layer is located on a side of the cover plate close to the display panel, the side of the second retaining wall of the first layer close to the second enclosure is in contact with the edge of the heat sink, and the side of the second retaining wall of the first layer away from the second enclosure is close to the edge of the cover plate;

[0023] The second retaining wall of the second layer is located on the side of the second retaining wall of the first layer away from the cover plate, one end of the second retaining wall of the second layer away from the second enclosure is indented relative to one end of the second retaining wall of the first layer away from the second enclosure, and one end of the second retaining wall of the second layer close to the second enclosure is indented relative to the second side of the heat sink.

[0024] In a possible implementation manner, a height of the second sub-enclosure at a position corresponding to the first side is smaller than a height of the second sub-enclosure at a position corresponding to the second side.

[0025] In a possible implementation manner, the filling layer is made of the same material as the second retaining wall corresponding to the second side.

[0026] In a possible implementation manner, the filling layer fills up the first groove.

[0027] In a possible implementation manner, the filling layer includes:

[0028] An inner filling layer, located in a bending space formed after the flexible circuit board is bent;

[0029] The outer filling layer is located in the space enclosed by the flexible circuit board, the cover plate, the first enclosure and the second enclosure.

[0030] In a possible implementation manner, the bending area of ​​the flexible circuit board has two through holes penetrating the flexible circuit board, and the two through holes are respectively close to two opening ends of the bending space.

[0031] In a possible implementation manner, the display component further includes:

[0032] A back film is located between the heat dissipation plate and the display panel and covers a portion of the flexible circuit board; the back film has a second groove exposing a bending area of ​​the flexible circuit board, and the inner filling layer is filled in the second groove.

[0033] In a possible implementation manner, a first spacing is provided between the first enclosure and the edge of the cover plate, and a value range of the first spacing is 0.02 mm to 0.08 mm.

[0034] In a possible implementation manner, the display device further includes:

[0035] A middle frame, the middle frame comprising a first part and a second part; the first part is located on a side of the edge sealing structure away from the cover plate, and the second part extends from an edge of the first part to an edge of the cover plate and overlaps with the cover plate;

[0036] A middle frame glue, located between the edge sealing structure and the first part;

[0037] The second part has an overlap groove at one end close to the cover plate for overlapping the edge of the cover plate, one side of the overlap groove abuts against the edge of the cover plate close to the display panel, and the other side of the overlap groove abuts against the side surface of the cover plate.

[0038] In a possible implementation manner, the second portion abuts against the multiple layers of the second retaining walls in the first enclosure, and the surface of the second portion abutting against the multiple layers of the second retaining walls is an inclined surface.

[0039] In a possible implementation manner, the display component further includes:

[0040] At least one first receiving hole is located in the display component at a position corresponding to the second side, the first enclosure is arranged along the edge of the first receiving hole, the first receiving hole is used to accommodate the earpiece, and the portion of the first enclosure arranged along the edge of the first receiving hole is a slope.

[0041] In a possible implementation manner, the display component further includes:

[0042] A second receiving hole is located in the area surrounded by the edge sealing structure, and the second enclosure extends toward the second receiving hole and surrounds the second receiving hole;

[0043] The edge sealing structure also includes a third enclosure, which surrounds the second accommodating hole and is located in the area enclosed by the second enclosure, and the third enclosure is located on a side surface of the cover plate close to the display panel; the filling layer also fills the space enclosed by the third enclosure and the second enclosure.

[0044] In a possible implementation manner, the flexible circuit board further includes:

[0045] A driving chip is located on a side of the flexible circuit board away from the heat sink, and the flexible circuit board is attached to a side of the heat sink away from the cover plate;

[0046] The second enclosure at least half surrounds the driver chip along the periphery of the driver chip, and the filling layer also fills the area corresponding to the driver chip. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 The figure shows a schematic diagram of the overlap between the middle frame and the cover plate in a conventional mobile phone;

[0048] Figure 2 A top view of the back of a display device provided by an embodiment of the utility model;

[0049] Figure 3 A kind of embodiment provided by the utility model Figure 2 Cross-section along the AA' direction;

[0050] Figure 4 A top view of another display device provided by an embodiment of the utility model;

[0051] Figure 5 A kind of embodiment provided by the utility model Figure 4 Cross-section along the BB' direction;

[0052] Figure 6 A cross-sectional view of an edge sealing structure provided in an embodiment of the utility model on the side where the flexible circuit board is located;

[0053] Figure 7 A cross-sectional view of an edge sealing structure provided by an embodiment of the utility model at a position other than the side where the flexible circuit board is located;

[0054] Figure 8 and Fig. 9 A schematic diagram of the structure of another display device provided by an embodiment of the utility model;

[0055] Fig.10 A top view of the back of another display device provided by an embodiment of the utility model;

[0056] Fig.11 A kind of embodiment provided by the utility model Fig.10 Cross-section along CC' direction;

[0057] Fig.12 A kind of embodiment provided by the utility model Fig.10 Cross-section along the DD' direction;

[0058] Fig.13 A cross-sectional view of another display device provided by an embodiment of the utility model at a corresponding position of the second side;

[0059] Fig.14 A structural schematic diagram of a filling layer provided in an embodiment of the utility model;

[0060] Fig.15 A partial top view of a display device provided by an embodiment of the utility model;

[0061] Fig.16 A schematic diagram of a flexible circuit board before being bent provided by an embodiment of the utility model;

[0062] Fig.17 A schematic diagram of a flexible circuit board after being bent provided by an embodiment of the utility model;

[0063] Fig.18 and Fig.19 A schematic diagram of the structure of another display device provided by an embodiment of the utility model;

[0064] Fig. 20 A schematic diagram of the structure of another display device provided by an embodiment of the utility model;

[0065] Fig.21 A top view of another display device provided by an embodiment of the utility model;

[0066] Fig. 22 The embodiment of the utility model provides Fig.21 Cross-sectional view of EE';

[0067] Fig.23 The embodiment of the utility model provides Fig.21 Cross-sectional view along the FF' direction;

[0068] Fig.24 and Fig.25 A top view of another display device provided by an embodiment of the utility model;

[0069] Fig.26 The embodiment of the utility model provides Fig.24 Cross-section along the GG' direction;

[0070] Figure 27-Figure 28 A top view of another display device provided by an embodiment of the utility model;

[0071] Fig.29 The embodiment of the utility model provides Fig. 27 Cross-sectional view along the MM' direction.

[0072] Reference numerals:

[0073] Cover plate 1, display component 2, display panel 21, heat sink 22, flexible circuit board 23, edge sealing structure 3, first enclosure 31, second enclosure 32, filling layer 33, first groove a1, bending area C, first sub-enclosure 311, second sub-enclosure 321, first side a, second side b, first retaining wall 311a, second retaining wall 311b, ink layer 4, annular groove 4a, inner filling layer 331, outer filling layer 332, through hole H1, back film 24, second groove 24a, middle frame 5, middle frame glue 6, first part 51, second part 52, overlapping groove 52a, first accommodating hole H2, third enclosure 34, driving chip 231, second accommodating hole H3. DETAILED DESCRIPTION

[0074] An embodiment of the utility model provides a display device.

[0075] It should be understood that the specific structural and functional details disclosed in the embodiments of the present invention are merely representative and are for the purpose of describing exemplary embodiments of the present invention. However, the present invention can be specifically implemented in many alternative forms and should not be interpreted as being limited to the embodiments described herein.

[0076] In the description of the present utility model, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof are intended to cover non-exclusive inclusions.

[0077] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] The terms used in the present invention are only for describing specific embodiments and are not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "one", "one" and "item" used herein are also intended to include the plural. It should also be understood that the terms "include" and / or "comprise" used herein specify the existence of stated features, integers, steps, operations, units and / or components, without excluding the existence or addition of one or more other features, integers, steps, operations, units, components and / or combinations thereof.

[0079] The term "and / or" in the embodiments of the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0080] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in conjunction with the drawings and examples below. However, the example embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein; on the contrary, these embodiments are provided to make the utility model more comprehensive and complete, and to fully convey the concepts of the example embodiments to those skilled in the art. The same figure marks in the figures represent the same or similar structures, and their repeated descriptions will be omitted. The words expressing position and direction described in the utility model are all explained with the drawings as examples, but changes can be made as needed, and the changes made are all included in the scope of protection of the utility model. The drawings of the utility model are only used to illustrate the relative position relationship and do not represent the true proportion.

[0081] It should be noted that specific details are described in the following description to facilitate a full understanding of the present invention. However, the present invention can be implemented in a variety of other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below. The subsequent description of the specification is a preferred implementation method for implementing the present invention, but the description is for the purpose of illustrating the general principles of the present invention and is not intended to limit the scope of the present invention. The scope of protection of the present invention shall be determined by the definition of the attached claims.

[0082] The display device provided by the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0083] See also Figure 2-Figure 3 , Figure 2 A top view of the back of a display device provided by an embodiment of the utility model, Figure 3 A kind of embodiment provided by the utility model Figure 2 A cross-sectional view taken along the AA' direction, wherein the display device comprises:

[0084] Cover plate 1;

[0085] The display assembly 2 is located on the back of the cover plate 1; the display assembly 2 includes a display panel 21, a heat sink 22 located on the side of the display panel 21 away from the cover plate 1, and a flexible circuit board 23 bound to the display panel 21. The edge of the heat sink 22 is indented relative to the edge of the display panel 21. The heat sink 22 includes a first side a and a second side b. The two ends of the first side a and the two ends of the second side b are connected. The flexible circuit board 23 is arranged close to the first side a. The flexible circuit board 23 is attached to the side of the heat sink 22 away from the display panel 21 after being bent; the second side b is the remaining side of the heat sink 22 other than the first side a. For example, the heat sink 22 is rectangular, including four sides: top, bottom, left, and right. Assuming that the "bottom" side is the first side a, the remaining three sides (top, left, and right) are collectively referred to as the second side b.

[0086] The edge sealing structure 3 at least covers the edge of the first side a of the heat sink 22 and extends to the edge close to the cover plate 1; the edge sealing structure 3 includes a first enclosure 31, a second enclosure 32 and a filling layer 33; the first enclosure 31 is located on the side of the cover plate 1 close to the display panel 21, and is at least arranged along the edge of the cover plate 1 corresponding to the first side a; the second enclosure 32 is located on the side of the heat sink 22 away from the cover plate 1, and is at least arranged along the first side a of the heat sink 22, and is indented relative to the edge of the heat sink 22; the filling layer 33 is filled in the first groove a1 jointly surrounded by the first enclosure 31, the second enclosure 32, the display component 2 and the cover plate 1, and the bending area C of the flexible circuit board 23 is located in the first groove a1.

[0087] The first enclosure 31, the second enclosure 32 and the filling layer 33 may be made of an adhesive, and the adhesive may be, for example, a colloid. The first enclosure 31 and the second enclosure 32 may use an adhesive with the same viscosity, such as an adhesive with a viscosity greater than or equal to 300w.

[0088] In some embodiments, the filling layer 33 is filled in the first groove a1, so that the side of the edge sealing structure 3 away from the cover plate 1 is a plane, that is, the first enclosure 31, the second enclosure 32 and the filling layer 33 are in the same plane away from the cover plate 1. In this way, it is convenient to use the edge sealing structure 3 to at least protect the edge of the side where the flexible circuit board 23 in the display device is located to prevent damage to the flexible circuit board 23.

[0089] like Figure 2 As shown, the first enclosure 31 is arranged around the edge of the cover plate 1 on the side of the cover plate 1 close to the display assembly 2; the second enclosure 32 is arranged around the edge of the heat sink 2 on the side of the heat sink 22 away from the cover plate, and is indented relative to the edge of the heat sink 22 (that is, the second enclosure 32 is arranged close to the first side a of the heat sink 22, and the orthographic projection of the second enclosure 32 on the cover plate is located within the orthographic projection of the heat sink 22 on the cover plate); as shown in FIG. Figure 3 As shown, the filling layer 33 is filled in the first groove a1 surrounded by the first enclosure 31 and the second enclosure 32, and the bending area C of the flexible circuit board 23 is located in the first groove a1; therefore, in the display device, the edge sealing structure 3 at least covers the first side a of the heat sink 22 and extends to the edge close to the cover plate 1, so that the bending area C of the flexible circuit board 23 is located in the packaging structure, so that the bending area C of the flexible circuit board 23 is filled as a whole inside and outside, and in the assembly of the display device, it can be Figure 1 The middle frame 4' is directly overlapped on the edge sealing structure 3, which saves at least Figure 1 The minimum overlap space required by the whole machine middle frame 4' in the prior art is shown, so that the distance from the vertex of the bending area C of the flexible circuit board 23 to the edge of the cover plate 1 can be effectively reduced to achieve a narrow frame design.

[0090] See also Figure 4 and Figure 5 , Figure 4 A top view of another display device provided by an embodiment of the utility model, Figure 5 The embodiment of the utility model provides Figure 4 Cross-sectional view along the BB' direction.

[0091] The edge sealing structure 3 surrounds and covers the edge of the heat dissipation plate 22 and extends to the edge close to the cover plate 1;

[0092] The first enclosure 31 surrounds the edge of the cover plate 1, and the side of the first enclosure 31 away from the second enclosure 32 is close to the edge of the cover plate 1; the second enclosure 32 surrounds the edge of the heat sink 22, and the side of the second enclosure 32 close to the first enclosure 31 is indented relative to the edge of the heat sink 22.

[0093] exist Figure 4 The first groove a1 formed by the first enclosure 31, the second enclosure 32, the display assembly 2 and the cover plate 1 is annular, and the corresponding filling layer 33 is also annular. The first enclosure 31 is located outside the ring, and the second enclosure 32 is located inside the ring. Figure 4 The cross-sectional view of the middle edge sealing structure 3 on the side where the flexible circuit board 23 is located can be referred to Figure 3 The cross-sectional view of the edge sealing structure 3 outside the side where the flexible circuit board 23 is located can be referred to Figure 5 .

[0094] In the embodiment provided by the utility model, the edge sealing structure 3 is allowed to surround and cover the edge of the heat sink 22 and extend to the edge close to the cover plate 1; and the first enclosure 31 is allowed to surround the edge of the cover plate 1, and the side of the first enclosure 31 away from the second enclosure 32 is close to the edge of the cover plate 1; the second enclosure 32 surrounds the edge of the heat sink 22, and the side of the second enclosure 32 close to the first enclosure 31 is indented relative to the edge of the heat sink 22, so that the edge sealing structure 3 can protect the edge of the entire display device as a whole, thereby improving the characteristic that the edge of the display device is easily damaged when it falls.

[0095] See also Figure 6 and Figure 7 , Figure 6 A cross-sectional view of an edge sealing structure provided by an embodiment of the utility model on the side where the flexible circuit board is located, Figure 7 A cross-sectional view of an edge sealing structure provided in an embodiment of the utility model at a position other than the side where the flexible circuit board is located.

[0096] The first enclosure 31 includes a plurality of first sub-enclosures 311 stacked in layers, and the first sub-enclosures 311 are arranged around the edge of the cover plate 1; the second enclosure 32 includes a plurality of second sub-enclosures 321 stacked in layers, and the second sub-enclosures 321 are arranged around the edge of the heat sink 22 (the corresponding top view can be referred to Figure 4 );

[0097] like Figure 6 and Figure 7The longitudinal section area S1 of the second sub-enclosure 321 corresponding to the first side a is smaller than the longitudinal section area S2 of the second sub-enclosure 321 corresponding to the second side b. The longitudinal section area S1 of the second sub-enclosure 321 corresponding to the first side a is the cross-sectional area of ​​the second sub-enclosure 321 in the thickness direction at any position corresponding to the first side a along the direction from the second sub-enclosure 321 to the first sub-enclosure 311; the longitudinal section area S2 of the second sub-enclosure 321 corresponding to the second side b is the cross-sectional area of ​​the second sub-enclosure 321 in the thickness direction at any position corresponding to the second side b along the direction from the second sub-enclosure 321 to the first sub-enclosure 311.

[0098] like Figure 6 and Figure 7 The first enclosure 31 shown includes 6 layers of first sub-enclosures 311, and the second enclosure 32 includes 2 layers of second sub-enclosures 321, but the longitudinal section area S1 of the second sub-enclosure 321 at the position of the first side a (i.e., the side where the flexible circuit board 23 is located) is smaller than the longitudinal section area S2 of the second sub-enclosure 321 at the position of the second side b (i.e., the position outside the side where the flexible circuit board 23 is located). Since the display device is superimposed with the thickness of the bent flexible circuit board 23 at the position of the first side a, and the film material between the heat sink 22 and the bent flexible circuit board 23, the thickness of the display component 2 at the corresponding position of the first side a is higher than the thickness at the corresponding position of the second side b. The utility model sets the longitudinal section area S1 of the second sub-enclosure 321 at the position of the first side a to be smaller than the longitudinal section area S2 of the second sub-enclosure 321 at the position of the second side b, which can adapt to the different thicknesses of the display component 2 at the positions of the first side a and the second side b, so that the side of the edge sealing structure 3 away from the cover plate 1 remains flat.

[0099] It is important to understand that Figure 6 and Figure 7 What is actually shown is the cross section of the first side a and the cross section of the second side b. The first side a and the second side b need to be referred to. Figure 2 .

[0100] Please continue to see Figure 6 and Figure 7 The height h1 of the second sub-enclosure 321 at the position corresponding to the first side a is smaller than the height h2 at the position corresponding to the second side b, so that the height of the second enclosure 32 at the position of the first side a is smaller than the height at the position of the second side b, thereby adapting to the relatively thick film thickness of the display module at the position of the first side a, and keeping the side of the edge sealing structure 3 away from the cover plate 1 flat.

[0101] Please continue to see Figure 6 and Figure 7, the orthographic projection of the first sub-enclosure 311 on the cover plate 1 does not overlap with the orthographic projection of the display component 2 on the cover plate 1; in this way, the same printing nozzle can be used to print each layer of the first sub-enclosure 311, and there is no need to replace the nozzle or adjust the printing parameters in the middle, thereby improving printing efficiency.

[0102] Please continue to see Figure 6 and Figure 7 , the first sub-enclosure 311 and the edge of the cover plate 1 have a first spacing d1, the value range of the first spacing d1 is 0.02mm-0.08mm, and the first spacing d1 can be the printing accuracy of the equipment used to print the first sub-enclosure 311. If the printing accuracy of the equipment used to print the first sub-enclosure 311 is 0.05mm, the first spacing is set to 0.05mm, so that when printing the first sub-enclosure 311, it can prevent the adhesive used in the first sub-enclosure 311 from flowing to the outer edge of the cover plate 1 during printing, causing the shape to collapse.

[0103] like Figure 8 and Fig. 9 A schematic diagram of the structure of another display device provided by an embodiment of the utility model, the display device also includes:

[0104] The ink layer 4 is located on the side of the cover plate 1 close to the display panel 21; the edge of the ink layer 4 has an annular groove 4a arranged around the edge of the cover plate 1; the orthographic projection of the first sub-enclosure 311 on the cover plate 1 is located within the orthographic projection of the annular groove 4a on the cover plate 1.

[0105] Since the ink layer 4 is disposed on the side of the cover plate 1 facing the display panel 21 in the display device, if the first enclosure 31 is directly disposed on the ink layer 4 (as can be seen in FIG. Figure 6 and Figure 7 The edge of the first sub-enclosure 311 and the cover plate 1 needs to have at least Figure 6 and Figure 7 The first distance d1 shown is used to prevent the adhesive from overflowing to the outer edge of the cover plate 1. Figure 1 In the prior art shown in FIG. 1 , the distance d' from the edge of the cover plate 1' to the vertex of the bending area of ​​the flexible circuit board 2' does not at least need to consider the minimum overlap space and the minimum overlap space required by the middle frame 4' of the whole machine. Figure 6 and Figure 7 The first distance d1 is shown.

[0106] In order to further reduce the first distance d1 from the first sub-enclosure 311 to the edge of the cover plate 1, the utility model provides an annular groove 4a surrounding the edge of the ink layer 4 in the ink layer 4, and the annular groove 4a can be arranged close to the edge of the cover plate 1. When the first sub-enclosure 311 is formed, the first sub-enclosure 311 is printed in the annular groove 4a, and the adhesive used for printing the first sub-enclosure 311 is retained in the annular groove 4a and will not overflow to the outer edge of the cover plate 1, so there is no need to Figure 6 and Figure 7 In this way, at least a first distance d1 corresponding to the printing accuracy of the printing device is retained between the first sub-enclosure 311 and the outer edge of the cover plate 1, thereby further reducing the distance from the first sub-enclosure 311 to the edge of the cover plate 1.

[0107] See also Figure 8 and Fig. 9 In the scheme of setting an annular groove 4a at the edge of the ink layer 4, the color of at least the first layer of the first sub-enclosure 311 in the first enclosure 31 is black, and the first layer of the first sub-enclosure 311 is the first sub-enclosure 311 closest to the cover plate 1 among the multiple layers of the first sub-enclosure 311, which can prevent light leakage near the annular groove 4a.

[0108] Please continue to see Fig. 9 , the width w3 of the annular groove 4a can be consistent with the width w1 of the first sub-enclosure 311, and the height h3 of the annular groove 4a is less than or equal to the thickness m of the ink layer 4. If the width w1 of the first sub-enclosure 311 is 2c, the width w3 of the annular groove 4a is also 2c, and the thickness of the ink layer 4 is m, then the height h3 of the annular groove 4a can be set to m, and the value range of m is 12.6um to 23.4um.

[0109] See also Figure 10-12 , Fig.10 A top view of the back of another display device provided by an embodiment of the utility model, Fig.11 A kind of embodiment provided by the utility model Fig.10 Cross-section view along CC' direction, Fig.12 A kind of embodiment provided by the utility model Fig.10 The cross-sectional view in the DD' direction, the first enclosure 31, comprises:

[0110] A first retaining wall 311a and a second retaining wall 311b are connected end to end and have the same height; wherein the first retaining wall 311a is located on the side of the first side a away from the second enclosure 32, and the second retaining wall 311b is located on the side of the second side b away from the second enclosure 32, and the longitudinal section area S3 of the first retaining wall 311a is smaller than the longitudinal section area S4 of the second retaining wall 311b; the orthographic projection of the first retaining wall 311a on the cover plate 1 has no overlap with the orthographic projection of the display component 2 on the cover plate 1, and the orthographic projection of the second retaining wall 311b on the cover plate 1 overlaps with the orthographic projection of the display component 2 on the cover plate 1. The longitudinal section area S3 of the first retaining wall 311a is the cross-sectional area of ​​the first retaining wall 311a at any position along the direction from the second enclosure 32 to the first enclosure 31; the longitudinal section area S4 of the second retaining wall 311b is the cross-sectional area of ​​the second retaining wall 311b at any position along the direction from the second enclosure 32 to the first enclosure 31.

[0111] It should be noted that Fig.10 The display assembly 2 in the embodiment includes a display panel 21, a heat sink 22, and a flexible circuit board 23. Fig.10 The middle display surface 21 is blocked and therefore not shown.

[0112] like Fig.11 and Fig.12 As shown, the second retaining wall 311b is arranged on the side of the second side b away from the second enclosure 32, and the longitudinal section area S3 of the first retaining wall 311a is made smaller than the longitudinal section area S4 of the second retaining wall 311b. This can reduce the number of layers of the second retaining wall 311b required to form the first enclosure 31, reduce the formation time of the longest multi-layer second retaining wall 311b of the first enclosure 31, and improve production efficiency. For example, assuming that the total length of the first enclosure 31 is 6l, the length of the first retaining wall 311a is l, and the length of the second retaining wall 311b is 5l, it is obvious that the length of the second retaining wall 311b accounts for the largest proportion of the total length of the first enclosure 31. Therefore, the fewer the number of layers of the second retaining wall 311b, the less time is consumed in printing, and correspondingly, the less time is spent in forming the first enclosure 31, and the production efficiency can be improved accordingly.

[0113] Since the edge sealing structure 3 needs to cover the bending area C of the flexible circuit board 23 at the position of the first edge a, and the orthographic projection of the first retaining wall 311a on the cover plate 1 is set to have no overlap with the orthographic projection of the display component 2 on the cover plate 1, the bending area C of the flexible circuit board 23 can be avoided when printing the first retaining wall 311a, so as to prevent the formation of an uneven first retaining wall 311a in the bending area C. Moreover, since the edge sealing structure 3 covers the bending area C of the flexible circuit board 3, at least it is not necessary to Figure 1As shown in the prior art, the minimum overlap space required by the middle frame 4' of the whole machine is taken into consideration, so that the width of the edge sealing structure 3 at the location of the first side a can be reduced; and due to the existence of the bending area C, the distance between the first side a of the heat sink 22 and the edge of the cover plate 1 is greater than the distance between the second side b of the heat sink 22 and the edge of the cover plate 1. Therefore, the width of the edge sealing structure 3 at the location of the first side a is wider than the width of the edge sealing structure 3 at the location of the second side b. The orthographic projection of the second retaining wall 311b on the cover plate 1 is set to overlap with the orthographic projection of the display component 2 on the cover plate, which can ensure that the edge of the display component 2 corresponding to the second side b is covered by the edge sealing structure 3, and can reduce the width of the edge sealing structure 3 at the location of the second side b.

[0114] like Fig.12 As shown, the first enclosure 31 includes multiple layers of first retaining walls 311a which are arranged in an overlapping manner;

[0115] See also Fig.13 This is a cross-sectional view of another display device provided by an embodiment of the utility model at a position corresponding to the second side b. In the direction Y in which the second retaining wall 311b is away from the cover plate 1, the first enclosure 31 includes multiple layers of second retaining walls 311b which are sequentially retracted. Fig.13 As shown, the second layer of second retaining wall 311b farthest from the cover plate 1 is retracted by d2 relative to the first layer of second retaining wall 311b closest to the cover plate. Fig.13 There is a third layer of second retaining wall 311b on the side of the second layer of second retaining wall 311b away from the cover plate 1, and the third layer of second retaining wall 311b is also retracted by d2 relative to the second layer of second retaining wall 311b.

[0116] like Fig.11 and Fig.12 As shown, since the longitudinal section area S3 of the first retaining wall 311a is smaller than the longitudinal section area S4 of the second retaining wall 311b, and the first retaining wall 311a has no overlapping side with the display assembly 2, when printing the first retaining wall 311a, the adhesive used in the first retaining wall 311a has low fluidity and can maintain a good shape, so that multiple layers of the first retaining wall 311a can be overlapped; since the edge of the heat sink 22 is indented relative to the edge of the display panel 21 on the side where the second side b is located, the second retaining wall 311b covers the display assembly 21. The topography of the cover is in a stepped shape, so that the adhesive used in the second retaining wall 311b is easy to flow in the direction of the second side b away from the edge of the cover plate 1, so that the surface inclination of the second retaining wall 311b close to the cover plate 1 is larger. When printing the upper second retaining wall 311b on the side of the first second retaining wall 311b closest to the cover plate 1 away from the cover plate 1, the upper second retaining wall 311b is easy to flow in the direction of the second side b away from the cover plate 1, so that the morphology of the upper second retaining wall 311b is easy to change; and the utility model Fig.13As shown, in the direction Y in which the second retaining wall 311b is away from the cover plate, the multiple layers of second retaining walls 311b are sequentially retracted to reduce the morphological changes of the upper second retaining walls 311b.

[0117] It is important to understand that Fig.13 The second side b shown is actually a cross section of a point on the second side b.

[0118] Please continue to see Fig.13 The first enclosure 31 includes two layers of stacked second retaining walls 311b; the first layer of the second retaining wall 311b is located on the side of the cover plate 1 close to the display panel 21, the side of the first layer of the second retaining wall 311b close to the second enclosure 32 abuts against the edge of the heat sink 22, and the side of the first layer of the second retaining wall 311b away from the second enclosure 32 is close to the edge of the cover plate 1;

[0119] The second-layer second retaining wall 311b is located on the side of the first-layer second retaining wall 311b away from the cover plate 1, the side of the second-layer second retaining wall 311b away from the second enclosure 32 is indented relative to the side of the first-layer second retaining wall 311b away from the second enclosure 32, and the side of the first-layer second retaining wall 311b close to the second enclosure 32 is indented relative to the second side b of the heat sink 22.

[0120] By setting the part of the first enclosure 31 where the second side b is located as two layers of second retaining walls 311b, and allowing the first layer of second retaining wall 311b closest to the cover plate 1 to abut against the edge of the second side of the heat sink 22 and extend to the edge close to the cover plate 1; and allowing the side of the second layer of second retaining wall 311b away from the second side b to be indented relative to the side of the first layer of second retaining wall 311b away from the first side b, and allowing the second layer of second retaining wall 311b to extend from the side of the second side b of the heat sink 22 away from the edge of the cover plate 1 to the edge of the first layer of second retaining wall 311b close to the cover plate 1, the second layer of second retaining wall 311b can be placed in a relatively flat area, reducing changes in the appearance of the second layer of second retaining wall 311b.

[0121] In some embodiments, the filling layer 33 may be formed of one material.

[0122] In other embodiments, the filling layer 33 may be formed of a variety of materials.

[0123] In some embodiments, the filling layer 33 and the second retaining wall 311 b are made of the same material as the portion corresponding to the second side b.

[0124] If the second retaining wall 311b is formed by glue having a viscosity greater than or equal to 300w, then the portion of the filling layer 33 corresponding to the position of the second side b is also formed by the glue.

[0125] In the embodiment provided by the utility model, by making the portion of the filling layer 33 corresponding to the second side b and the second retaining wall 311b use the same material, the portion of the filling layer 33 corresponding to the second side b can be printed after printing the second retaining wall 311b and the second enclosure 32, thereby eliminating the need to replace materials and improving printing efficiency.

[0126] See also Fig.14 A schematic diagram of the structure of a filling layer provided in an embodiment of the utility model. The filling layer 33 includes:

[0127] The inner filling layer 331 is located in the bending space formed after the flexible circuit board 23 is bent;

[0128] The outer filling layer 332 is located outside the inner filling layer 331 .

[0129] For example, after the flexible circuit board 23 is bent, the width direction of the flexible circuit board 23 ( Fig.14 The bending space has two open ends, and the adhesive can be filled into the bending space by injecting glue into one open end and sucking glue from the other open end to form an inner filling layer 331. The outer filling layer 332 can be printed in the first groove a1 between the first enclosure 31 and the second enclosure 32 after the first enclosure 31 and the second enclosure 32 are formed.

[0130] In the embodiment provided by the present invention, by filling different materials inside and outside the bending space formed after the flexible circuit board 23 is bent, different processes can be used to form an inner filling layer 331 in the bending space and an outer filling layer 332 outside the bending space, thereby improving the filling rate of the filling layer 33 in the bending space, thereby improving the stability of the bending area C of the flexible circuit board 23 and protecting the bending area C of the flexible circuit board from being easily damaged.

[0131] See also Fig.15 A partial top view of a display device provided in an embodiment of the utility model.

[0132] The bending area C of the flexible circuit board 23 has two through holes H1 penetrating the flexible circuit board 23 . The two through holes H1 are respectively close to two opening ends of the bending space.

[0133] When forming the internal filling layer 33, after the flexible circuit board 23 is bent, the two open ends of the bending space formed by the bending of the flexible circuit board 23 are blocked, and then the adhesive is injected into one of the two through holes H1 opened in the bending area C of the flexible circuit board 23 until the other through hole H1 overflows with glue, indicating that the bending space is full of adhesive, and then the adhesive in the bending space is cured to form the inner filling layer 331. Then, the first enclosure 31, the second enclosure 32 and the outer filling layer 332 can be formed.

[0134] In the embodiment provided by the utility model, two through holes H1 are set in the bending area C of the flexible circuit board 23, and the two through holes H1 are respectively close to the two open ends of the bending space formed after the flexible circuit board 23 is bent. After the two open ends of the bending space are blocked, glue can be injected into one of the through holes H1, and the other through hole H1 is observed to see if there is glue overflow to form an inner filling layer 331, so that the inner filling 331 can fill the bending space.

[0135] See also Fig.16 and Fig.17 , Fig.16 This is a schematic diagram of the flexible circuit board before being bent provided by an embodiment of the utility model. Fig.17 This is a schematic diagram of a flexible printed circuit board after being bent provided by an embodiment of the utility model.

[0136] The display device further comprises:

[0137] The back film 24 is located between the heat dissipation plate 22 and the display panel 21 and covers the flexible circuit board 23 . The back film 24 has a second groove 24 a exposing the bending area C of the flexible circuit board 23 , and the inner filling layer 331 is filled in the second groove 24 a .

[0138] like Fig.16 As shown, before the flexible circuit board 23 is bent, the second groove 24a of the back film 24 can be filled with adhesive, and after pre-curing (such as the curing rate reaches a preset ratio), the flexible circuit board 23 is bent, such as Fig.17 As shown, an inner filling layer 331 is formed.

[0139] In the embodiment provided by the utility model, by filling the inner filling layer 331 in the second groove 24a of the back film 24 exposing the flexible circuit board 23, the inner filling layer 331 can be formed before bending the flexible circuit board 23, thereby improving the filling rate of the inner filling layer 331 in the bending zone C.

[0140] See also Fig.18 and Fig.19 A schematic diagram of the structure of another display device provided by an embodiment of the utility model. The display device also includes:

[0141] The middle frame 5 includes a first portion 51 and a second portion 52; the first portion 51 is located on a side of the edge sealing structure 3 away from the cover plate 1, and the second portion 52 extends from an edge of the first portion 51 to an edge of the cover plate 1 and overlaps the cover plate 1;

[0142] The middle frame glue 6 is located between the edge sealing structure 3 and the first part 51;

[0143] The end of the second portion 52 close to the cover plate 1 has a lap groove 52a that overlaps with the edge of the cover plate 1 , one side of the lap groove 52a abuts against the edge of the cover plate 1 close to the display panel 21 , and the other side of the lap groove 52a overlaps with the side surface of the cover plate 1 .

[0144] The width w4 of the overlapping groove 52a ranges from 35 to 65 um.

[0145] like Fig.18 and Fig.19 As shown, for the solution in which the first enclosure 31 and the display component 2 do not overlap (including the solution in which the annular groove 4a is provided in the ink layer 4 and the solution in which the annular groove 4a is not provided), the second part 52 of the middle frame 5 is perpendicular to the cover plate 1 on one side close to the first enclosure 31, and is provided with a lap groove 52a on the side close to the cover plate 1 for abutting against the edge of the cover plate 1 close to the display panel 21, so that the middle frame 5 can be overlapped on the side of the cover plate 1 close to the display panel 21, thereby sharing part of the stress and preventing damage to the edge of the display component 2.

[0146] See also Fig. 20 A schematic diagram of another display device provided by an embodiment of the utility model. The second portion 52 abuts against the multi-layer second retaining wall 311b in the first enclosure 31, and the surface of the second portion 52 abutting against the multi-layer second retaining wall 311b is an inclined surface.

[0147] In the direction from the cover plate 1 to the display panel 21, the solution of the multiple layers of second retaining walls 311b being retracted in sequence can be as follows: Fig. 20 As in the above, a side of the second part 52 of the middle frame 5 that abuts against the multi-layer second retaining wall 311b is provided with a slope that matches the indentation amount of the second retaining wall 311b, so that it is convenient to abut the slope of the second part 52 against the second retaining wall 311b. At the same time, a lap groove 52a is provided at one end of the slope close to the cover plate 1, so that the middle frame 5 can overlap the back side of the cover plate 1 to share the stress and protect the edge of the display component 2.

[0148] See also Fig.21 A top view of another display device provided by an embodiment of the utility model. The display assembly 2 also includes:

[0149] At least one first accommodating hole H2 is located at a position in the display component 2 corresponding to the second side b. The first enclosure 31 is arranged along the edge of the first accommodating hole H2. The first accommodating hole H2 can be used to accommodate the earpiece. The portion of the first enclosure 31 arranged along the edge of the first accommodating hole H2 is a slope.

[0150] See also Fig. 22 The embodiment of the utility model provides Fig.21 The section view along the EE' direction in the middle. The portion of the first enclosure 31 disposed along the edge of the first receiving hole H2 is an inclined surface.

[0151] like Fig.23 The utility model embodiment provides Fig.21 The first receiving hole H2 can also be used to receive buttons (such as a power button, a volume button, etc.), and in this case, the portion of the first enclosure 31 disposed along the edge of the first receiving hole H2 is perpendicular to the cover plate 1 .

[0152] In the embodiment provided by the utility model, by setting the first enclosure 31 along the edge of the first receiving hole H2, the device received in the first receiving hole H2 can be completely avoided. Setting the first enclosure 31 at the edge of the first receiving hole H2 for receiving the earpiece as an inclined surface can not only achieve complete avoidance of the earpiece, but also facilitate sound diffusion and reduce echo.

[0153] See also Fig.24 and Fig.25 A top view of another display device provided by an embodiment of the utility model, Fig.26 The embodiment of the utility model provides Fig.24 The cross-sectional view along the GG' direction shows that the component 2 also includes:

[0154] The second receiving hole H3 is located in the area surrounded by the edge sealing structure 3, and the second enclosure 32 extends toward the second receiving hole H3 and surrounds the second receiving hole H3; the second receiving hole H3 can be used to accommodate a camera;

[0155] The edge sealing structure 3 also includes a third enclosure 34. The third enclosure ring 34 surrounds the second accommodating hole H3 and is located in the area enclosed by the second enclosure 34. The third enclosure 34 is located on the side surface of the cover plate 1 close to the display panel 21; the filling layer 33 also fills the space enclosed by the third enclosure 34 and the second enclosure 32.

[0156] The second enclosure 32 can be as follows Fig.24 The second enclosure 32 may also extend toward the second receiving hole H3 in a straight line and surround the second receiving hole H3 along the edge of the second receiving hole H3. Fig.25 In that way, two straight lines extend toward the second accommodating hole H3 and are arranged around the second accommodating hole H3 along the edge of the second accommodating hole H3; no matter which extension method the second enclosure 32 adopts, the third enclosure 34 is arranged on one side surface of the cover plate 1 close to the display panel 21, and the filling layer 33 is also filled in the space enclosed by the third enclosure 34 and the second enclosure 32.

[0157] In the embodiment provided by the utility model, by allowing the second enclosure 32 to extend in the direction of the second accommodating hole H3 and be arranged around the edge of the second accommodating hole H3, and allowing the third enclosure 34 to be located on the side surface of the cover plate 1 close to the display panel, and filling the filling layer 33 between the second enclosure 32 and the third enclosure 34, the edge of the second accommodating hole H3 and the edge of the display device can be integrally sealed, thereby effectively protecting the second accommodating hole H3.

[0158] See also Figure 27-Figure 28 , Figure 27-Figure 28 A top view of another display device provided by an embodiment of the utility model, Fig.29 The embodiment of the utility model provides Fig. 27 Cross-sectional view along the MM' direction.

[0159] The flexible circuit board 23 also includes:

[0160] The driving chip 231, the flexible circuit board 23 is attached to the side of the heat sink 22 away from the cover plate 1, and the driving chip 231 is located on the side of the flexible circuit board 23 away from the heat sink 22;

[0161] The second enclosure 32 at least half surrounds the driving chip 231 along the periphery of the driving chip 231 , and the filling layer 33 also fills the area corresponding to the driving chip 231 .

[0162] like Fig. 27 As shown, the second enclosure 32 can extend toward the direction of the driver chip 231 and be arranged along the edge of the driver chip 231 and semi-surround the driver chip 231; Fig.28 As shown, the second enclosure 32 may also extend toward the direction of the driver chip 231 and be disposed completely around the driver chip 231 , and the filling layer 33 also fills the space where the second enclosure 32 surrounds the driver chip 231 .

[0163] In the embodiment provided by the utility model, by extending the second enclosure 32 toward the driver chip 231 and at least half-surrounding the driver chip 231, the filling layer 33 is also filled in the area where the second enclosure 32 at least half-surrounds the driver chip 231, so that the edge sealing structure 3 can be used to enhance the protection of the driver chip 231.

[0164] The display device may be an organic light-emitting semiconductor (OLED) display, an OLED display screen, an OLED television, or other display device, or may be a mobile device such as a mobile phone, a tablet computer, or a notebook.

[0165] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other 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 falling within the scope of the present invention.

[0166] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display device, wherein: include: Cover plate; A display assembly is located on one side of the cover plate; the display assembly includes a display panel, a heat sink located on a side of the display panel away from the cover plate, and a flexible circuit board bound to the display panel, the edge of the heat sink is indented relative to the edge of the display panel, the heat sink includes a first side and a second side, two ends of the first side are connected to two ends of the second side, the flexible circuit board is arranged close to the first side, and the flexible circuit board is attached to the side of the heat sink away from the display panel after being bent; A sealing structure at least covers the edge of the first side of the heat sink and extends to the edge close to the cover plate; the sealing structure includes a first enclosure, a second enclosure and a filling layer; the first enclosure is located on a side of the cover plate close to the display panel, and is at least arranged along the edge of the cover plate corresponding to the first side; the second enclosure is located on a side of the heat sink away from the cover plate, and is at least arranged along the first side of the heat sink; the filling layer is filled in a first groove jointly surrounded by the first enclosure, the second enclosure, the display assembly and the cover plate, and the bending area of ​​the flexible circuit board is located in the first groove.

2. The display device according to claim 1, wherein: The edge sealing structure surrounds and covers the edge of the heat dissipation plate and extends to the edge close to the cover plate; The first enclosure surrounds the edge of the cover plate, and the side of the first enclosure away from the second enclosure is close to the edge of the cover plate; the second enclosure surrounds the edge of the heat sink, and the side of the second enclosure close to the first enclosure is indented relative to the edge of the heat sink.

3. The display device according to claim 2, wherein: The first enclosure includes multiple layers of first sub-enclosures stacked together, and the first sub-enclosures are arranged around the edge of the cover plate; the second enclosure includes multiple layers of second sub-enclosures stacked together, and the second sub-enclosures are arranged around the edge of the heat dissipation plate; The longitudinal section area of ​​the second sub-enclosure corresponding to the first side is smaller than the longitudinal section area of ​​the second sub-enclosure corresponding to the second side.

4. The display device according to claim 3, wherein: The orthographic projection of the first sub-enclosure on the cover plate does not overlap with the orthographic projection of the display component on the cover plate.

5. The display device according to claim 4, wherein: The display device further includes: The ink layer is located on a side of the cover plate close to the display panel; the edge of the ink layer has an annular groove arranged around the edge of the cover plate; the orthographic projection of the first sub-enclosure on the cover plate is located within the orthographic projection of the annular groove on the cover plate.

6. The display device according to claim 5, wherein: At least the first layer of the first sub-enclosure in the first enclosure is black in color, and the first layer of the first sub-enclosure is the layer of the first sub-enclosure closest to the cover plate among the multiple layers of the first sub-enclosure.

7. The display device according to claim 3, wherein: The first sub-enclosure comprises: A first retaining wall and a second retaining wall connected end to end and having the same height; wherein the first retaining wall is located on a side of the first side away from the second enclosure, the second retaining wall is located on a side of the second side away from the second enclosure, and the longitudinal section area of ​​the first retaining wall is smaller than the longitudinal section area of ​​the second retaining wall; the orthographic projection of the first retaining wall on the cover plate has no overlap with the orthographic projection of the display component on the cover plate, and the orthographic projection of the second retaining wall on the cover plate has overlap with the orthographic projection of the display component on the cover plate.

8. The display device according to claim 7, wherein: The first enclosure includes multiple layers of the first retaining walls arranged in an overlapping manner; In the direction in which the second retaining wall is away from the cover plate, the multiple layers of the second retaining walls included in the first enclosure are retracted in sequence.

9. The display device according to claim 8, wherein: The first enclosure includes two layers of the second retaining wall stacked together; The second retaining wall of the first layer is located on a side of the cover plate close to the display panel, the side of the second retaining wall of the first layer close to the second enclosure is in contact with the edge of the heat sink, and the side of the second retaining wall of the first layer away from the second enclosure is close to the edge of the cover plate; The second retaining wall of the second layer is located on the side of the second retaining wall of the first layer away from the cover plate, one end of the second retaining wall of the second layer away from the second enclosure is indented relative to one end of the second retaining wall of the first layer away from the second enclosure, and one end of the second retaining wall of the second layer close to the second enclosure is indented relative to the second side of the heat sink.

10. The display device according to any one of claims 3 to 9, wherein: A height of the second sub-enclosure at a position corresponding to the first side is smaller than a height of the second sub-enclosure at a position corresponding to the second side.

11. The display device according to any one of claims 7 to 9, wherein: The filling layer is made of the same material as the second retaining wall corresponding to the second side.

12. The display device according to any one of claims 1 to 9, wherein: The filling layer fills the first groove.

13. The display device according to any one of claims 1 to 9, wherein: The filling layer comprises: An inner filling layer, located in a bending space formed after the flexible circuit board is bent; The outer filling layer is located in the space enclosed by the flexible circuit board, the cover plate, the first enclosure and the second enclosure.

14. The display device according to claim 13, wherein: The bending area of ​​the flexible circuit board has two through holes penetrating the flexible circuit board, and the two through holes are respectively close to two opening ends of the bending space.

15. The display device according to claim 13, wherein: The display assembly further comprises: A back film is located between the heat dissipation plate and the display panel and covers a portion of the flexible circuit board; the back film has a second groove exposing a bending area of ​​the flexible circuit board, and the inner filling layer is filled in the second groove.

16. The display device according to any one of claims 2 to 5, wherein: There is a first distance between the first enclosure and the edge of the cover plate, and the value range of the first distance is 0.02mm to 0.08mm.

17. The display device according to any one of claims 7 to 9, wherein: The display device further includes: A middle frame, the middle frame comprising a first part and a second part; the first part is located on a side of the edge sealing structure away from the cover plate, and the second part extends from an edge of the first part to an edge of the cover plate and overlaps with the cover plate; A middle frame glue, located between the edge sealing structure and the first part; The second part has an overlap groove at one end close to the cover plate for overlapping the edge of the cover plate, one side of the overlap groove abuts against the edge of the cover plate close to the display panel, and the other side of the overlap groove abuts against the side surface of the cover plate.

18. The display device according to claim 17, wherein: The second portion abuts against the multiple layers of the second retaining walls in the first enclosure, and the surface of the second portion abutting against the multiple layers of the second retaining walls is an inclined surface.

19. The display device according to any one of claims 1 to 8, wherein: The display assembly further comprises: At least one first receiving hole is located in the display component at a position corresponding to the second side, the first enclosure is arranged along the edge of the first receiving hole, the first receiving hole is used to accommodate the earpiece, and the portion of the first enclosure arranged along the edge of the first receiving hole is a slope.

20. The display device according to any one of claims 1 to 8, wherein: The display assembly further comprises: A second receiving hole is located in the area surrounded by the edge sealing structure, and the second enclosure extends toward the second receiving hole and surrounds the second receiving hole; The edge sealing structure also includes a third enclosure, which surrounds the second accommodating hole and is located in the area enclosed by the second enclosure, and the third enclosure is located on a side surface of the cover plate close to the display panel; the filling layer also fills the space enclosed by the third enclosure and the second enclosure.

21. The display device according to any one of claims 1 to 8, wherein: The flexible circuit board also includes: A driving chip is located on a side of the flexible circuit board away from the heat sink, and the flexible circuit board is attached to a side of the heat sink away from the cover plate; The second enclosure at least half surrounds the driver chip along the periphery of the driver chip, and the filling layer also fills the area corresponding to the driver chip.

Images