Display device

Abstract

The utility model discloses a display device. The display device provided by the embodiment of the utility model comprises a back plate which comprises a bottom plate and a side plate which is arranged on the side edge of the bottom plate and is connected with the bottom plate; the side plates are crossed with the bottom plate; the bottom plate and the side plate form an accommodating space, and the surface of one side, facing the accommodating space, of the side plate comprises a plurality of first grooves; the light guide plate comprises a first body part positioned in the accommodating space and a plurality of first lugs; the first body part and the bottom plate are oppositely arranged, and the first body part comprises a first lower surface opposite to the bottom plate, a first upper surface located on the side, away from the bottom plate, of the lower surface, and a first side face connected with the first upper surface and the first lower surface; the first lug is located on the first side face and extends into the first groove from the containing space.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to display devices. Background Art

[0002] With the maturity of the new energy vehicle market, the application of display screens in vehicles is becoming more and more extensive, the application scenarios are diversified, and the display screens tend to be large-sized. For large-size liquid crystal display modules, structural strength and vehicle-mounted reliability are a challenge. Summary of the Utility Model

[0003] Embodiments of the present disclosure provide a display device for fixing and limiting a light guide plate.

[0004] A display device provided by an embodiment of the present disclosure includes:

[0005] A backplane, including: a bottom plate, and side plates connected to the bottom plate at the sides of the bottom plate; the side plates intersect with the bottom plate; the bottom plate and the side plates form a receiving space, and the surface of the side plate facing the receiving space includes a plurality of first grooves;

[0006] A light guide plate, including: a first body portion located in the receiving space, and a plurality of first lug ears; the first body portion is disposed opposite to the bottom plate, and the first body portion includes: a first lower surface opposite to the bottom plate, a first upper surface located on the side of the lower surface away from the bottom plate, and a first side surface connecting the first upper surface and the first lower surface; the first lug ears are located on the first side surface, and the first lug ears extend from the receiving space into the first grooves.

[0007] In some embodiments, the display device further includes:

[0008] An elastic buffer pad located in the first grooves; at least part of the first lug ears are in contact with the elastic buffer pad.

[0009] In some embodiments, the elastic buffer pad has a second groove; the second groove has at least an opening facing the receiving space, and at least part of the first lug ears extend into the second groove to be in contact with the elastic buffer pad.

[0010] In some embodiments, the side plate includes: a first sub-side plate and a second sub-side plate disposed opposite to each other, a third sub-side plate connecting the two at one end of the first sub-side plate and the second sub-side plate, and a fourth sub-side plate connecting the two at the other end of the first sub-side plate and the second sub-side plate;

[0011] The plurality of first grooves include: a plurality of first-type first grooves and a plurality of second-type first grooves;

[0012] Both the third sub-side plate and the fourth sub-side plate include first-type first grooves, and the first-type first grooves are adjacent to the second sub-side plate; in the first-type first grooves, the second groove further has an opening facing the bottom plate;

[0013] In the first groove of the second type, the second groove further has an opening away from the bottom plate;

[0014] Part of the first lug extends into the first groove of the first type, and part of the first lug extends into the first groove of the second type.

[0015] In some embodiments, the second groove in the first groove of the first type is divided into: a first region, and a second region located on a side of the first region away from the second sub-side plate;

[0016] In a direction perpendicular to the bottom plate, the depth of the first region is greater than the depth of the second region.

[0017] In some embodiments, the display device further includes:

[0018] A light source assembly, disposed opposite to a partial area of the first side surface of the first body portion; the first lug is located outside the area opposite to the light source assembly.

[0019] In some embodiments, the shape of the orthographic projection of the first body portion in a direction perpendicular to the bottom plate is a rectangle; the first body portion includes: two long edges parallel to each other, and two short edges parallel to each other, and the length of the long edge is greater than the length of the short edge;

[0020] The first side surface includes: a first sub-side surface and a second sub-side surface respectively corresponding to the two long edges, and a third sub-side surface and a fourth sub-side surface respectively corresponding to the two short edges;

[0021] The first sub-side surface is disposed opposite to the light source assembly, and a plurality of first lugs are respectively located on the second sub-side surface, the third sub-side surface, and the fourth sub-side surface;

[0022] The number of the first lugs located on the third sub-side surface is equal to the number of the first lugs located on the fourth sub-side surface; the number of the first lugs located on the second sub-side surface is greater than or equal to the number of the first lugs located on the third sub-side surface.

[0023] In some embodiments, the display device further includes:

[0024] At least one layer of optical film, located on a side of the light guide plate away from the bottom plate; the optical film includes: a second body portion located in the accommodation space, and a plurality of second lugs; the second body portion is disposed opposite to the first body portion, the second body portion includes: a second lower surface opposite to the first body portion, a second upper surface located on a side of the second lower surface away from the bottom plate, and a second side surface connecting the second upper surface and the second lower surface; the second lugs are located on the second side surface, and the second lugs extend from the accommodation space into the first groove, and the second lugs are in contact with the elastic buffer pad.

[0025] In some embodiments, the plurality of first grooves include: first-type first grooves and second-type first grooves, and the second lug extends into the second-type first grooves;

[0026] At least a part of the second lug and the first lug extend into the same first groove;

[0027] The second lug and the first lug that extend into the same first groove overlap in the orthographic projection in the direction perpendicular to the bottom plate.

[0028] In some embodiments, the display device includes a light source assembly; the second side facing the area outside the light source assembly includes second lugs;

[0029] The number of the second lugs is greater than or equal to the number of the first lugs.

[0030] In some embodiments, the orthographic projections of the first body portion and the second body portion in the direction perpendicular to the bottom plate are both rectangular; the first side includes: a first sub-side, a second sub-side, a third sub-side, and a fourth sub-side;

[0031] The second side includes: a fifth sub-side on the same side as the first sub-side, a sixth sub-side on the same side as the second sub-side, a seventh sub-side on the same side as the third sub-side, and an eighth sub-side on the same side as the fourth sub-side; the plurality of second lugs are respectively located on the sixth sub-side, the seventh sub-side, and the eighth sub-side;

[0032] The number of the second lugs located on the seventh sub-side is equal to the number of the second lugs located on the eighth sub-side; the number of the second lugs located on the sixth sub-side is greater than the number of the second lugs located on the seventh sub-side;

[0033] The number of the second lugs located on the seventh sub-side is less than or equal to the number of the first lugs located on the third sub-side; the number of the second lugs located on the sixth sub-side is greater than the number of the first lugs located on the second sub-side.

[0034] In some embodiments, the display device includes a plurality of stacked optical films; the second lugs included in the plurality of optical films overlap in the orthographic projection in the direction perpendicular to the bottom plate.

[0035] In some embodiments, the display device further includes:

[0036] A first adhesive material, located between the light guide plate and the optical film;

[0037] A second adhesive material, located between two adjacent optical films.

[0038] In some embodiments, the display device further includes:

[0039] A middle frame, located on the side away from the light guide plate of at least one layer of optical film in the accommodation space and connected to the side plate;

[0040] The third adhesive material is located between the middle frame and the optical film.

[0041] In some embodiments, the surface of the side plate facing the accommodation space includes: a third side surface and a fourth side surface that intersect with the bottom plate, and a fifth side surface connecting the third side surface and the fourth side surface; the third side surface is connected to the bottom plate, and the fifth side surface is parallel to the surface of the bottom plate facing the accommodation space; the third side surface includes a first groove, and the middle frame is located on the side of the fifth side surface away from the third side surface;

[0042] The side plate further includes: a first surface connected to the fourth side surface; the first surface is located on the side of the fourth side surface away from the bottom plate, and the first surface is parallel to the surface of the bottom plate facing the accommodation space;

[0043] The middle frame includes: a first part opposite to the fourth side surface, and a second part connected to the first part and opposite to the fifth side surface; the distance from the first part to the first surface is greater than or equal to 0.3 mm and less than or equal to 0.5 mm; or,

[0044] The middle frame is disposed opposite to the fifth side surface.

[0045] In some embodiments, the display device further includes:

[0046] A cover plate, disposed opposite to the back plate;

[0047] A first adhesive layer, located between the first surface and the cover plate; in the direction perpendicular to the bottom plate, the projection of the first adhesive layer surrounds the projection of the accommodation space;

[0048] A plurality of height-limiting parts, located between the first surface and the cover plate and on the side of the first adhesive layer facing the accommodation space; in the direction perpendicular to the bottom plate, the thickness of the first adhesive layer is equal to the thickness of the height-limiting parts.

[0049] In some embodiments, the back plate further includes:

[0050] A cover plate, disposed opposite to the back plate;

[0051] A first adhesive layer, located between the first surface and the cover plate; in the direction perpendicular to the bottom plate, the projection of the first adhesive layer surrounds the projection of the accommodation space;

[0052] A shielding part, located on the side of the first adhesive layer away from the accommodation space; in the direction perpendicular to the bottom plate, the orthographic projection of the shielding part surrounds the orthographic projection of the first adhesive layer;

[0053] The shielding part is connected to the side plate on the side of the first surface facing the cover plate. In the direction perpendicular to the bottom plate, the orthographic projection of the shielding part surrounds the orthographic projection of the cover plate; in the direction perpendicular to the bottom plate, the distance from the shielding part to the surface of the cover plate away from the bottom plate is greater than or equal to 0 and less than or equal to the thickness of the cover plate; or,

[0054] The shielding part is located between the first surface and the cover plate.

[0055] In some embodiments, the display device further includes: a display panel on the side of the optical film away from the bottom plate in the accommodation space, and a chip-on-film bonded to the display panel on the side away from the bottom plate of the display panel; the chip-on-film includes: a first flexible circuit board, a heat dissipation tape, and a conductive tape stacked; the first flexible circuit board is bonded to the display panel.

[0056] The heat dissipation tape includes: a conductive substrate, an insulating and heat-conducting bonding layer located between the conductive substrate and the first flexible circuit board, and a heat radiation layer located between the conductive substrate and the conductive tape.

[0057] Both the conductive substrate and the conductive tape are grounded; alternatively, the heat radiation layer is a conductor heat radiation layer, and the heat radiation layer, the conductive substrate, and the conductive tape are all grounded; alternatively, the first flexible circuit board includes a touch signal line area, and the orthographic projections of the heat dissipation tape and the conductive tape on the first flexible circuit board do not overlap with the touch signal line area.

[0058] In some embodiments, the display device further includes: a cover plate and a second bonding layer.

[0059] One end of the conductive tape extends to be connected to the cover plate; the second bonding layer is located at the connection where one end of the conductive tape extends to be connected to the cover plate, and the second bonding layer contacts the surface of the conductive tape away from the first flexible circuit board and the surface of the cover plate facing the bottom plate.

[0060] In some embodiments, the display device further includes: a first printed circuit board bonded to the chip-on-film, a second printed circuit board, and a second flexible circuit board bonded to the first printed circuit board and the second printed circuit board.

[0061] The second flexible circuit board includes: a plurality of connection areas and a plurality of bending areas, the connection areas and the bending areas are alternately connected, and the first printed circuit board and the second printed circuit board are respectively bonded to different connection areas.

[0062] The display device further includes: a plurality of buffer parts; the buffer parts are in contact with the bending areas, and the buffer parts are located between two connection areas respectively connected to the bending areas.

[0063] In some embodiments, the display panel includes a back surface facing the bottom plate and a front surface on the side away from the bottom plate of the back surface, and the chip-on-film is bonded to the display panel on the front surface.

[0064] The display device further includes: a third bonding layer located on the back surface, and the chip-on-film is bonded to the back surface through the third bonding layer.

[0065] In some embodiments, the display device further includes:

[0066] A reflective sheet, located between the bottom plate and the light guide plate;

[0067] A fourth adhesive layer, located between the bottom plate and the reflective sheet; the orthographic projection of the fourth adhesive layer on the reflective sheet is adjacent to the edge of the reflective sheet. In the extending direction of the edge, the ratio of the length of the orthographic projection of the fourth adhesive layer on the reflective sheet to the length of the edge is 1:3.

[0068] In some embodiments, at least the surface of the side plate away from the accommodation space is a curved surface.

[0069] In the display device provided by the embodiments of the present disclosure, a first lug is provided on the side surface of the first body of the light guide plate. The first lug can extend into the first groove of the side plate, so as to realize the assembly of the light guide plate and the back plate. Moreover, since the first lug is provided on the side surface of the first body of the light guide plate, for the production of a large-sized light guide plate, the light guide plate with the first lug can be formed by using a cutting process. Thus, there is no need to use an injection molding process to form a boss, and the assembly of the light guide plate and the back plate can also be realized, that is, the fixation of the light guide plate can be realized. Description of the Drawings

[0070] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly introduces the drawings required to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0071] Figure 1 It is a schematic structural diagram of a display device provided by an embodiment of the present disclosure;

[0072] Figure 2 It is a schematic structural diagram of another display device provided by an embodiment of the present disclosure;

[0073] Figure 3 It is a schematic structural diagram of yet another display device provided by an embodiment of the present disclosure;

[0074] Figure 4 It is a schematic structural diagram of yet another display device provided by an embodiment of the present disclosure;

[0075] Figure 5 It is a schematic structural diagram of a first type of first groove provided by an embodiment of the present disclosure;

[0076] Figure 6 For Figure 5 It is a schematic structural diagram of the first type of first groove in the structure in

[0077] Figure 7 It is a schematic structural diagram of a second type of first groove provided by an embodiment of the present disclosure;

[0078] Figure 8 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0079] Figure 9 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0080] Figure 10 Schematic diagram of an optical film provided by an embodiment of the present disclosure;

[0081] Figure 11 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0082] Figure 12 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0083] Figure 13 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0084] Figure 14 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0085] Figure 15 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0086] Figure 16 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0087] Figure 17 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0088] Figure 18 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0089] Figure 19 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0090] Figure 20 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0091] Figure 21 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0092] Figure 22 Schematic diagram of a flip chip film provided by an embodiment of the present disclosure;

[0093] Figure 23 Schematic diagram of a first flexible circuit board provided by an embodiment of the present disclosure;

[0094] Figure 24 Schematic diagram of a heat dissipation tape or conductive tape provided by an embodiment of the present disclosure;

[0095] Figure 25 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0096] Figure 26 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0097] Figure 27 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0098] Figure 28 Schematic diagram of another display device provided by an embodiment of the present disclosure;

[0099] Figure 29 Schematic diagram of another display device provided by an embodiment of the present disclosure. Detailed implementation manners

[0100] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. And without conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0101] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the ordinary meanings understood by those of ordinary skill in the art to which the present disclosure pertains. The "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0102] It should be noted that the sizes and shapes of the figures in the drawings do not reflect the true proportions, and the purpose is only to illustrate the content of the present disclosure schematically. And the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout.

[0103] In the related art, in a backlight module, a boss structure needs to be provided on a light guide plate to achieve the fixation and limitation of the backlight module. Usually, an injection molding process is required to form the boss structure on the light guide plate. However, the injection molding process is only applicable to the production of small-sized light guide plates and cannot be used to form large-sized light guide plates with bosses by the injection molding process.

[0104] Embodiments of the present disclosure provide a display device. As Figure 1 , Figure 2 , Figure 3 shown, the display device includes:

[0105] A backplane 1, including: a bottom plate 101 and side plates 102 connected to the bottom plate 101 at the sides of the bottom plate 101; the side plates 102 intersect with the bottom plate 101; the bottom plate 101 and the side plates 102 form a receiving space A, and the surface of the side plate 102 facing the receiving space A includes a plurality of first grooves 1021;

[0106] A light guide plate 2, including: a first body portion 201 located in the receiving space A and a plurality of first lugs 202; the first body portion 201 is disposed opposite to the bottom plate 101, and the first body portion 201 includes: a first lower surface 2011 opposite to the bottom plate 101, a first upper surface 2012 located on the side of the lower surface away from the bottom plate 101, and a first side surface 2013 connecting the first upper surface 2012 and the first lower surface 2011; the first lugs 202 are located on the first side surface 2013, and the first lugs 202 extend from the receiving space A into the first grooves 1021.

[0107] In the display device provided by the embodiments of the present disclosure, first lugs are provided on the side surface of the first body of the light guide plate, and the first lugs can extend into the first grooves of the side plate, so as to realize the assembly of the light guide plate and the backplane. Moreover, since the first lugs are provided on the side surface of the first body of the light guide plate, for the production of large-sized light guide plates, a cutting process can be used to form a light guide plate with first lugs. Thus, it is not necessary to use an injection molding process to form bosses, and the assembly of the light guide plate and the backplane can also be realized, that is, the fixation of the light guide plate can be achieved.

[0108] In some embodiments, the bottom plate and the side plates are integrally connected die-castings.

[0109] In some embodiments, the first lugs are integrally connected to the first body portion.

[0110] It should be noted that any recessed area on the surface of the side plate facing the receiving space can be used as a groove. It can be understood that the side plate facing the receiving space has a side surface that is farthest from its outer surface (for example Figure 8(the side surface marked with J in the attached drawing), relative to the side surface J. Any area with a depression can be considered as belonging to the area of the first groove. That is, any area of the side plate with a depression for accommodating the first lug can be considered as belonging to the area of the first groove. That is, it can be as Figure 1 shown, the first groove 1021 has only one opening facing the accommodation space A. Or, it can also be as Figure 8 shown, the first groove 1021 has, in addition to the opening facing the accommodation space A, an opening on the side away from the bottom plate 101.

[0111] In some embodiments, the distance between the first groove and the bottom plate can be greater than 0. Or, it can also be that the distance between the first groove and the bottom plate is 0. That is, the first groove is connected to the bottom plate to form the accommodation space of the light guide plate.

[0112] In some embodiments, as Figure 1 , Figure 8 shown, in the direction perpendicular to the bottom plate 101, the thickness of the first lug 202 is equal to the thickness of the first body portion 201.

[0113] In some embodiments, as Figure 1 , Figure 8 shown, the display device further includes:

[0114] An elastic buffer pad 3, located in the first groove 1021; at least part of the first lug 202 is in contact with the elastic buffer pad 3.

[0115] For the display device provided by the embodiments of the present disclosure, an elastic buffer pad is provided in the first groove, and the first lug is in contact with the elastic buffer pad, so that while the light guide plate and the back plate are assembled and limited in position, the abnormal sound caused by the contact between the light guide plate and the back plate can be avoided.

[0116] In some embodiments, an elastic buffer pad is provided in each first groove. Each first lug is in contact with the elastic buffer pad.

[0117] Or, in some embodiments, elastic buffer pads are provided in some of the multiple first grooves, and no elastic buffer pads are provided in the remaining first grooves among the multiple first grooves.

[0118] In some embodiments, if an elastic buffer pad is provided in the first groove in which the multiple first lugs included in the light guide plate extend, the first lug is in contact with the elastic buffer pad; if no elastic buffer pad is provided in the first groove in which the multiple first lugs included in the light guide plate extend, the first lug is not in contact with the elastic buffer pad.

[0119] In some embodiments, the elastic buffer pad is in contact with at least one of the upper surface, the lower surface, and the side surface connecting the upper surface of the first lug.

[0120] In some embodiments, such as Figure 1 , Figures 5 - 8 shown, the elastic buffer pad 3 has a second groove 301. The second groove 301 has at least an opening facing the accommodation space A (not shown in some of the drawings). At least a part of the first lug 202 (not shown in some of the drawings) extends into the second groove 301 and contacts the elastic buffer pad 3.

[0121] It should be noted that, such as Figure 1 , Figures 5 - 8 , the elastic buffer pad has a bent region, that is, it has a corner, and the region corresponding to the corner can be used as the region of the second groove.

[0122] In some embodiments, the elastic buffer pad is made of silica gel.

[0123] In some embodiments, in the direction perpendicular to the bottom plate, the thickness of the elastic buffer pad is 0.8 millimeters.

[0124] In some embodiments, the elastic buffer pad is connected to the side plate through an adhesive material. The adhesive material is, for example, double-sided tape.

[0125] In some embodiments, such as Figure 2 shown, the display device further includes:[[]]

[0126] A light source assembly 4, which is disposed opposite to a partial area of the first side surface 2013 of the first body portion 201; the first lug 202 is located outside the area opposite to the light source assembly 4. Thus, sufficient assembly space can be reserved for the light source assembly to avoid interference of the first lug on the light source assembly.

[0127] In some embodiments, such as Figure 2 , Figure 3 shown, the shape of the orthographic projection of the first body portion 201 in the direction perpendicular to the bottom plate (not shown) is a rectangle; the first body portion 201 includes: two long edges parallel to each other, and two short edges parallel to each other, and the length of the long edge is greater than the length of the short edge;

[0128] The first side surface 2013 includes: a first sub-side surface 20131 and a second sub-side surface 20132 respectively corresponding to the two long edges, and a third sub-side surface 20133 and a fourth sub-side surface 20134 respectively corresponding to the two short edges;

[0129] The first sub-side surface 20131 is disposed opposite to the light source assembly 4, and a plurality of first lugs 202 are respectively located on the second sub-side surface 20132, the third sub-side surface 20133, and the fourth sub-side surface 20134;

[0130] The number of the first lugs 202 located on the third sub-side 20133 is equal to the number of the first lugs 202 located on the fourth sub-side 20134; the number of the first lugs 202 located on the second sub-side 20132 is greater than or equal to the number of the first lugs 202 located on the third sub-side 20133;

[0131] In some embodiments, Figure 2 As shown, the number of the first lugs 202 located on the second sub-side 20132 is greater than the number of the first lugs 202 located on the third sub-side 20133.

[0132] For the display device provided by the embodiments of the present disclosure, the number of the first lugs provided on the first side corresponding to the long side of the light guide plate is more than the number of the first lugs provided on the first side corresponding to the short side, which is more conducive to avoiding the movement of the light guide plate and improving the fixing and limiting effects of the light guide plate.

[0133] In some embodiments, such as Figure 2 As shown, one side of the third sub-side 20133 and one side of the fourth sub-side 20134 both include one first lug 202.

[0134] Or, in some embodiments, such as Figure 3 As shown, the number of the first lugs 202 located on the second sub-side 20132 is equal to the number of the first lugs 202 located on the third sub-side 20133.

[0135] In some embodiments, such as Figure 3 As shown, one side of the third sub-side 20133 includes two first lugs 202, and the two first lugs 202 are respectively adjacent to the first sub-side 20131 and the second sub-side 20132;

[0136] One side of the fourth sub-side 20134 includes two first lugs 202, and the two first lugs 202 are respectively adjacent to the first sub-side 20131 and the second sub-side 20132. That is, setting the first lugs in the right-angle area of the first body part can improve the fixing effect of the light guide plate and the back plate.

[0137] In some embodiments, such as Figure 2 、 Figure 3 As shown, the orthographic projection of the first body part 201 in the direction perpendicular to the bottom plate (not shown) is symmetric with respect to the first symmetry axis 22 perpendicular to the long side. Among the multiple first lugs 202 located on the second sub-side 20132, the distance from at least some of the first lugs 202 to the first symmetry axis 22 is less than the distance from the first lug 202 to the short side of the first body part 201.

[0138] In some embodiments, such as Figure 2As shown, the distance from at least one first lug 202 on the third sub-side surface 20133 to the second sub-side surface 20132 is greater than the distance from the first lug 202 to the first sub-side surface 20131, and the distance from at least one first lug 202 on the fourth sub-side surface 20134 to the second sub-side surface 20132 is greater than the distance from the first lug 202 to the first sub-side surface 20131.

[0139] In some embodiments, as Figure 3 shown, the distance from one first lug 202 on the third sub-side surface 20133 to the second sub-side surface 20132 is 0, and the distance from another first lug 202 on the third sub-side surface 20133 to the first sub-side surface 20131 is 0;

[0140] The distance from one first lug 202 on the fourth sub-side surface 20134 to the second sub-side surface 20132 is 0, and the distance from another first lug 202 on the fourth sub-side surface 20134 to the first sub-side surface 20131 is 0.

[0141] In some embodiments, as Figure 4 shown, the side plate 102 includes: a first sub-side plate 31 and a second sub-side plate 32 which are oppositely arranged, a third sub-side plate 33 connecting the two at one end of the first sub-side plate 31 and one end of the second sub-side plate 32, and a fourth sub-side plate 34 connecting the two at the other end of the first sub-side plate 31 and the other end of the second sub-side plate 32;

[0142] The plurality of first grooves 1021 include: a plurality of first-type first grooves 1021-1 and a plurality of second-type first grooves 1021-2;

[0143] Both the third sub-side plate 33 and the fourth sub-side plate 34 include first-type first grooves 1021-1, and the first-type first grooves 1021-1 are adjacent to the second sub-side plate 32; within the first-type first grooves 1021-1, as Figure 5 、 Figure 6 、 Figure 8 shown, the second groove 301 also has an opening facing the bottom plate 101;

[0144] Within the second-type first grooves 1021-2, as Figure 7 、 Figure 11 shown, the second groove 301 also has an opening away from the bottom plate;

[0145] As Figure 8 shown, part of the first lugs 202 extend into the first-type first grooves 1021-1, and part of the first lugs (not shown) extend into the second-type first grooves 1021-2.

[0146] It should be noted that Figure 4 the side plate shown is, for example,Figure 3 The side plate corresponding to the light guide plate shown. Figure 5 is Figure 4 a partial area of the elastic buffer pad 3 within the first type of first groove 1021-1 in the G1 region in Figure 6 is Figure 5 a schematic diagram of the elastic buffer pad 3 after being flipped in Figure 7 is Figure 4 a schematic diagram of the elastic buffer pad 3 within the second type of first groove 1021-2 in the G2 region in

[0147] Specifically, the first sub-side plate corresponds to the first sub-side surface of the first main body part, the second sub-side plate corresponds to the second sub-side surface of the first main body part, the third sub-side plate corresponds to the third sub-side surface of the first main body part, and the fourth sub-side plate corresponds to the fourth sub-side surface of the first main body part. The light source assembly is located between the first main body part and the first sub-side plate.

[0148] In some embodiments, such as Figure 5 , Figure 6 , Figure 8 shown, the elastic buffer pad 3 within the first type of first groove includes: a first sub-elastic buffer pad 3-1 located on the side of the first lug (not shown) away from the bottom plate 101, a second sub-elastic buffer pad 3-2 located on the side of the first lug (not shown) away from the first main body part (not shown), and a third sub-elastic buffer pad 3-3 at least located on one side of the second sub-elastic buffer pad 3-2 in the direction parallel to the first side surface (not shown); wherein, Figure 5 , Figure 6 in, at least the side of the second sub-elastic buffer pad 3-2 facing the second sub-side plate (not shown) includes the third sub-elastic buffer pad 3-3, Figure 8 in, at least the side of the second sub-elastic buffer pad 3-2 away from the second sub-side plate (not shown) includes the third sub-elastic buffer pad 3-3.

[0149] In some embodiments, such as Figure 5 , Figure 6 shown, the first sub-elastic buffer pad 3-1, the second sub-elastic buffer pad 3-2, and the third sub-elastic buffer pad 3-3 form a second groove 301, and the second groove 301 has an opening facing the accommodation space (not shown), an opening facing the bottom plate 101, and an opening on the side away from the second sub-side plate (not shown); that is, the area on the side of the first lug (not shown) facing the bottom plate 101 and the area on the side of the first lug (not shown) away from the second sub-side plate (not shown) do not have the elastic buffer pad 3.

[0150] Or, in some embodiments, such as Figure 8 shown, the elastic buffer pad 3 within the first type of first groove further includes: a fourth sub-elastic buffer pad 3-4 located on the side of the first lug 301 facing the bottom plate 101;

[0151] The fourth sub-elastic buffer pad 3-4 is connected to both the first sub-elastic buffer pad 3-1 and the third sub-elastic buffer pad 3-3; the area formed by connecting the first sub-elastic buffer pad 3-1, the second sub-elastic buffer pad 3-2, the third sub-elastic buffer pad 3-3, and the fourth sub-elastic buffer pad 3-4 forms a second groove 301.

[0152] In some embodiments, as Figure 8 shown, in the direction parallel to the bottom plate 101, the width of the fourth sub-elastic buffer pad 3-4 is equal to the width of the first sub-elastic buffer pad 3-1.

[0153] Alternatively, in some embodiments, in the direction parallel to the bottom plate, the width of the fourth sub-elastic buffer pad is less than the width of the first sub-elastic buffer pad.

[0154] In some embodiments, as Figure 6 shown, in the first type of first groove 1021-1, the second groove 301 is divided into: a first area 3011 and a second area 3012 located on the side of the first area away from the second sub-side plate (not shown); in the direction perpendicular to the bottom plate 101, the depth h13 of the first area 3011 is greater than the depth h14 of the second area 3012. That is, the first area 3011 is a through groove in the direction perpendicular to the bottom plate 101. Among them, the first sub-elastic buffer pad 3-1 has a first plane 3-101 and a second plane 3-102 facing the bottom plate side, and the first plane 3-101 and the second plane 3-102 are located on different planes; the first sub-elastic buffer pad 3-1 is connected to the third sub-elastic buffer pad 3-3 in the area corresponding to the first plane 3-101, and there is a break between the part of the first sub-elastic buffer pad 3-1 on the second plane 3-102 and the part of the third sub-elastic buffer pad 3-3 close to the second sub-elastic buffer pad 3-2. The distance between the first plane 3-101 and the plane 3-201 of the second sub-elastic buffer pad 3-2 facing the bottom plate 101 is the depth h13 of the first area 3011, and the distance between the second plane 3-102 and the plane 3-201 of the second sub-elastic buffer pad 3-2 facing the bottom plate 101 is the depth h14 of the second area 3012.

[0155] It should be noted that the first area is the area closest to the side plate corner, so that the depth of the second groove in this area is greater than that in the remaining areas, which is beneficial to the assembly matching between the elastic buffer pad and the remaining structures, and is more beneficial to stress release and improves the buffer effect.

[0156] In some embodiments, as Figure 7As shown, the elastic buffer pad 3 in the first groove 1021-2 of the second type includes: a fourth sub-elastic buffer pad 3-4 located on the side of the first lug (not shown) facing the bottom plate 101, and third sub-elastic buffer pads 3-3 located on both sides of the fourth sub-elastic buffer pad 3-4 in the direction parallel to the first side;

[0157] The fourth sub-elastic buffer pad 3-4 and the third sub-elastic buffer pads 3-3 on both sides thereof form a second groove 301, which has an opening facing the accommodation space (not shown), an opening on the side away from the bottom plate 101, and an opening on the side facing the side plate opposite to the first lug (not shown);

[0158] Specifically, in the first groove of the second type, there is no elastic buffer pad 3 in the area on the side of the first lug (not shown) away from the first body part (not shown) and on the side of the first lug (not shown) facing away from the bottom plate 101.

[0159] In specific implementation, Figure 3 Among them, the two first lugs 202 with a distance of 0 from the second sub-side 20132 (the two first lugs 202 located in the upper left corner and the upper right corner) extend into different first grooves of the first type. In some embodiments, in addition to the first lugs extending into different first grooves of the first type, some first lugs extend into different first grooves of the second type respectively. For example, at least two first lugs 202 located on the second sub-side 20132 extend into different first grooves of the second type respectively. Optionally, the remaining first lugs all extend into different first grooves of the second type respectively.

[0160] Or, in some embodiments, as Figure 4 shown, the multiple first grooves further include: multiple first grooves of the third type 1021-3; both the third sub-side plate 33 and the fourth sub-side plate 34 include the first grooves of the third type 1021-3, and the first grooves of the third type 1021-3 are adjacent to the first sub-side plate 31;

[0161] As Figure 9 shown, no elastic buffer pad is provided in the first grooves of the third type 1021-3;

[0162] The first lug 202 extends into the first grooves of the third type 1021-3 and is suspended. That is, the first lug 202 does not contact the back plate 1.

[0163] In specific implementation, Figure 3 Among them, the two first lugs 202 with a distance of 0 from the first sub-side 20131 (the two first lugs 202 located in the lower left corner and the lower right corner) extend into different first grooves of the third type respectively.

[0164] That is Figure 3In the light guide plate 2 shown, the two first lugs 202 at a distance of 0 from the second sub-side surface 20132 respectively extend into different first-type first grooves, the two first lugs 202 located on the second sub-side surface 20132 respectively extend into different second-type first grooves, and the two first lugs 202 at a distance of 0 from the first sub-side surface 20131 respectively extend into different third-type first grooves.

[0165] In some embodiments, as Figure 9 shown, when a partial side surface of the first groove 1021 is connected to the surface of the bottom plate 101 facing the light guide plate 2, on the side surface of the first groove 1021 opposite to the first lug 202 on the side of the first lug 202 facing the bottom plate 101, it is in a different plane from the surface of the bottom plate 101 facing the light guide plate 2. That is, in the direction perpendicular to the bottom plate 101, the first groove 1021 also has a recessed area relative to the surface of the bottom plate 101 facing the light guide plate 2.

[0166] In some embodiments, the multiple first grooves included in the side plate are all second-type first grooves; in the second-type first groove, as Figure 7 , Figure 11 shown, the second groove 301 also has an opening away from the bottom plate (not shown). For example, Figure 2 in the back plate corresponding to the light guide plate shown, the first grooves are all second-type first grooves.

[0167] In some embodiments, as Figure 1 , Figure 10 , Figure 11 shown, the display device further includes:

[0168] at least one layer of optical film 5, located on the side of the light guide plate 2 away from the bottom plate 101; the optical film 5 includes: a second body portion 501 located in the accommodation space A, and a plurality of second lugs 502; the second body portion 501 is disposed opposite to the first body portion 201, the second body portion 501 includes: a second lower surface 5011 opposite to the first body portion 501, a second upper surface 5012 located on the side of the second lower surface 5011 away from the bottom plate 101, and a second side surface 5013 connecting the second upper surface 5012 and the second lower surface 5011; the second lugs 502 are located on the second side surface 5013, and the second lugs 502 extend from the accommodation space A into the first groove 1021, and the second lugs 502 are in contact with the elastic buffer pad 3.

[0169] In the display device provided by the embodiments of the present disclosure, second lugs are provided on the side surface of the second body of the optical film, and the second lugs can extend into the first grooves of the side plate, so as to realize the assembly of the optical film and the back plate, and to realize the limitation of the optical film.

[0170] In some embodiments, the optical film may be a brightness enhancement film, a prism film, a privacy film, etc.

[0171] In some embodiments, as Figure 11 shown, the second lug 502 extends into the first groove 1021-2 of the second type.

[0172] In some embodiments, at least a part of the second lug 502 and the first lug 202 extend into the same first groove 1021. This first groove is the first groove of the second type.

[0173] In some embodiments, the positive projection of the second lug and the first lug that extend into the same first groove coincide in the direction perpendicular to the bottom plate.

[0174] In some embodiments, among the multiple first grooves, the first lug and the second lug extend in some of the first grooves, and only the second lug extends in the remaining first grooves. For example, Figure 10 in the back plate corresponding to the optical film layer shown and Figure 2 the light guide plate shown, the first groove is the above-mentioned situation, and the first groove into which the second lug extends is the first groove of the second type.

[0175] Alternatively, in some embodiments, the first lug and the second lug extend in some of the first grooves of the second type, only the second lug extends in some of the first grooves of the second type, only the first lug extends in the first grooves of the first type, and only the first lug extends in the first grooves of the third type. For example, Figure 10 in the back plate corresponding to the optical film layer shown and Figure 3 the light guide plate shown, the first groove is the above-mentioned situation.

[0176] In some embodiments, the display device further includes:

[0177] A first adhesive material, located between the light guide plate and the optical film. That is, the light guide plate and the optical film are bonded by the first adhesive material.

[0178] In some embodiments, the first adhesive material is a double-sided adhesive.

[0179] In specific implementation, after the light guide plate and the optical film are attached by the first adhesive material, they are assembled with the back plate. Thereby, the positioning of the light guide plate and the optical film is realized.

[0180] In some embodiments, as Figure 12As shown, the orthographic projection of the first adhesive material 24 on the light guide plate 2 is adjacent to the edge of the light guide plate 2 on the side facing the light source 4 (the long edge corresponding to the first sub-side surface 20131). In the extending direction of the long edge of the first body portion 201, the length of the first adhesive material 24 is less than the length of the first body portion 201, and the orthographic projection of the first adhesive material 24 on the light guide plate 2 overlaps with the first symmetry axis 22. For example, the first symmetry axis 22 bisects the orthographic projection of the first adhesive material 24 on the light guide plate 2.

[0181] In some embodiments, the display device includes a plurality of stacked optical film sheets; the second lug ears included in the plurality of optical film sheets overlap in the orthographic projection in the direction perpendicular to the bottom plate. That is, the positions of the second lug ears of different optical film sheets are the same.

[0182] In some embodiments, the number of the second lug ears 502 is greater than or equal to the number of the first lug ears 202.

[0183] When the number of the second lug ears is greater than or equal to the number of the first lug ears, the fixing effect of the structure composed of the optical film layer and the light guide plate to the back plate can be improved.

[0184] That is, there are only second lug ears but no first lug ears in some of the first grooves.

[0185] In some embodiments, the display device includes a light source assembly 4; the area of the second side surface 5013 facing away from the light source assembly 4 includes second lug ears 502.

[0186] In some embodiments, the shapes of the orthographic projections of the first body portion 201 and the second body portion 501 in the direction perpendicular to the bottom plate 101 are both rectangles; the first side surface 2013 includes: a first sub-side surface 20131, a second sub-side surface 20132, a third sub-side surface 20133, and a fourth sub-side surface 20134;

[0187] The second side surface 5013 includes: a fifth sub-side surface 50131 on the same side as the first sub-side surface 20131, a sixth sub-side surface 50132 on the same side as the second sub-side surface 20132, a seventh sub-side surface 50133 on the same side as the third sub-side surface 20133, and an eighth sub-side surface 50134 on the same side as the fourth sub-side surface 20134; a plurality of second lug ears 502 are respectively located on the sixth sub-side surface 50132, the seventh sub-side surface 50133, and the eighth sub-side surface 50134; that is, no second lug ear 502 is provided on the fifth sub-side surface 50131;

[0188] The number of the second lug ears 502 located on the seventh sub-side surface 50133 is equal to the number of the second lug ears 502 located on the eighth sub-side surface 50134; the number of the second lug ears 502 located on the sixth sub-side surface 50132 is greater than the number of the second lug ears 502 located on the seventh sub-side surface 50133;

[0189] The number of the second lugs 502 located on the seventh sub-side 50133 is less than or equal to the number of the first lugs 202 located on the third sub-side 20133; the number of the second lugs 502 located on the sixth sub-side 50132 is greater than the number of the first lugs 202 located on the second sub-side 20132.

[0190] Among them, Figure 10 the number of the second lugs 502 located on the seventh sub-side 50133 in Figure 2 is equal to Figure 10 the number of the first lugs 202 located on the third sub-side 20133 in Figure 3 ; the number of the second lugs 502 located on the seventh sub-side 50133 in

[0191] When the display device includes multiple layers of optical films, in some embodiments, the display device further includes:

[0192] A second adhesive material located between adjacent two layers of optical films.

[0193] In some embodiments, the second adhesive material is a double-sided adhesive. That is, the optical films are bonded together by the double-sided adhesive.

[0194] In some embodiments, as Figure 13 shown, the orthographic projection of the second adhesive material 25 on the optical film 5 is adjacent to the long edge corresponding to the fifth sub-side 50131 of the optical film 5. The second body portion 501 has a second symmetry axis 26 perpendicular to its long side. In the extending direction of the long edge of the second body portion 501, the length of the second adhesive material 25 is less than the length of the second body portion 501, and the orthographic projection of the second adhesive material 25 on the second body portion 501 overlaps with the second symmetry axis 26. For example, the second symmetry axis 26 bisects the orthographic projection of the second adhesive material 25 on the second body portion 501.

[0195] In some embodiments, the orthographic projection of the second adhesive material on the light guide plate coincides with the orthographic projection of the first adhesive material on the light guide plate.

[0196] In some embodiments, as Figure 14 shown, the display device further includes:

[0197] A middle frame 6 located on the side of at least one layer of optical film 5 away from the light guide plate 2 in the accommodation space A and connected to the side plate 102;

[0198] A third adhesive material 23 located between the middle frame 6 and the optical film 5.

[0199] In some embodiments, the orthographic projection of the third adhesive material 23 on the optical film 5 is as Figure 15As shown, the orthographic projection of a part of the third adhesive material 23 on the optical film 5 is adjacent to the long edge corresponding to the fifth sub-side surface 50131 of the optical film 5. In the extending direction of the long edge of the second main body portion 501, the length of the third adhesive material 23 adjacent to the long edge of the second main body portion 501 is less than the length of the second main body portion 501, and the orthographic projection of the third adhesive material 23 on the second main body portion 501 overlaps with the second symmetry axis 26. For example, the second symmetry axis 26 bisects the orthographic projection of the third adhesive material 23 on the second main body portion 501. The orthographic projection of a part of the third adhesive material 23 on the optical film 5 falls into the second lug 502 provided on one side of the sixth sub-side surface 50132 of the optical film 5.

[0200] In some embodiments, the third adhesive material is a double-sided adhesive.

[0201] It should be noted that the display device includes a display area and a peripheral area surrounding the display area. The side plate, the middle frame, and the side-entry light source are located in the peripheral area, and the bottom plate extends from the display area to the peripheral area. The first main body portion and the second main body portion cover the display area and also include parts located in the peripheral area. The first lug and the second lug are located in the peripheral area. The first adhesive material, the second adhesive material, and the third adhesive material are located in the peripheral area.

[0202] In some embodiments, the middle frame is connected to the side plate through a fourth adhesive material.

[0203] In some embodiments, the fourth adhesive material is a double-sided adhesive.

[0204] Alternatively, in some embodiments, the middle frame and the side plate are snap-connected. That is, the middle frame and the side plate are each provided with a snap connection portion.

[0205] In some embodiments, as Figure 11 , Figure 14 shown, the surface of the side plate 102 facing the accommodation space A includes: a third side surface 102-1 and a fourth side surface 102-2 that intersect with the bottom plate 101, and a fifth side surface 102-3 that connects the third side surface 102-1 and the fourth side surface 102-2; the third side surface 102-1 is connected to the bottom plate 101, and the fifth side surface 102-3 is parallel to the surface of the bottom plate 101 facing the accommodation space A; the third side surface 102-1 includes a first groove 1021, and the middle frame 6 is located on the side of the fifth side surface 102-3 away from the third side surface 102-1;

[0206] The side plate 102 further includes: a first surface 102-4 connected to the fourth side surface 102-2; the first surface 102-4 is located on the side of the fourth side surface 102-2 away from the bottom plate 101, and the first surface 102-1 is parallel to the surface of the bottom plate 101 facing the accommodation space A.

[0207] In some embodiments, when the middle frame is connected to the side plate through a fourth adhesive material, the fourth adhesive material is located between the middle frame and the fifth side surface 102-3.

[0208] In some embodiments, as Figure 14 shown, the display device further includes:

[0209] A cover plate 7, disposed opposite to the back plate 1;

[0210] A first adhesive layer 8, located between the first surface 102-4 and the cover plate 7; in a direction perpendicular to the bottom plate 101, the projection of the first adhesive layer 8 surrounds the projection of the accommodation space A.

[0211] In some embodiments, the cover plate is a glass cover plate.

[0212] In some embodiments, the first adhesive layer is a room temperature vulcanized silicone rubber (RTV glue).

[0213] In the related art, the adhesive layer between the cover plate and the back plate is usually a hot melt adhesive. For a large-size display device, the size of the back plate frame is also large, and the gluing area is large. When the display device is subjected to thermal shock, the back plate and the cover plate will expand and contract thermally. Since the cover plate is made of glass and the back plate is made of metal, their expansion coefficients are inconsistent. In addition, the hot melt adhesive is very hard after solidification, so the cover plate and the back plate are prone to peeling at high temperatures.

[0214] In the display device provided by the embodiments of the present disclosure, when the first adhesive layer between the back plate and the cover plate is RTV glue, it is beneficial to improve peeling caused by inconsistent expansion coefficients of the cover plate and the back plate at high temperatures.

[0215] In some embodiments, as Figure 14 shown, the display device further includes: a display panel 12 on the side of the optical film 5 away from the bottom plate 101 in the accommodation space A. Specifically, the display panel 12 is located on the side of the middle frame 6 facing the cover plate 7; the display device further includes: a foam 28 located between the middle frame 6 and the display panel 12, and an optical glue 27 located between the display panel 12 and the cover plate 7.

[0216] In some embodiments, the middle frame is a frame structure with an opening, so that the light emitted by the light source passing through the light guide plate and the optical film can be incident on the display panel.

[0217] In some embodiments, as Figure 14 shown, the middle frame 6 includes: a first part 601 opposite to the fourth side 102-2, and a second part 602 connected to the first part 601 and opposite to the fifth side 102-3.

[0218] It should be noted that, as Figure 11As shown, the first groove 1021 is a groove with an opening on the side away from the bottom plate 101, and an elastic buffer pad 3 is arranged in the first groove 1021. When the material of the elastic buffer pad 3 is silica gel, at a high temperature state, the expansion of the light guide plate (not shown) will squeeze the elastic buffer pad 3, and the elastic buffer pad 3 at the corner position of the first groove 1021 (i.e., Figures 5 - 7 the third sub-elastic buffer pad 3-3 in

[0219] will float up to lift the middle frame 6. If the height of the first part 601 in the direction perpendicular to the bottom plate 101 is relatively high, there will be a risk of contact between the middle frame 6 and the cover plate 7. In the peripheral area outside the display area, an ink needs to be coated on the side of the cover plate 7 facing the middle frame 6 for light shielding. The contact between the middle frame 6 and the cover plate 7 will scratch the ink, resulting in poor light leakage in the peripheral area of the display device. In addition, when there is a deviation in the assembly of the middle frame 6 and the back plate 1, if the height of the first part 601 in the direction perpendicular to the bottom plate 101 is relatively high, it will also cause the contact between the middle frame 6 and the cover plate 7 to scratch the ink.

[0220] In the display device provided by the embodiments of the present disclosure, the middle frame includes a second part and a first part bent relative to the second part, thereby improving the support strength of the middle frame. And the distance from the first part to the first surface is greater than or equal to 0.3 mm and less than or equal to 0.5 mm, that is, reducing the height of the first part in the direction perpendicular to the bottom plate can avoid the middle frame contacting the cover plate and scratching the ink, and avoid poor light leakage in the peripheral area of the display device.

[0221] Or, in some embodiments, as Figure 16 shown, the middle frame 6 is arranged opposite to the fifth side surface 102-3. That is, removing the folded edge of the middle frame 6, i.e., the first part, can avoid the middle frame contacting the cover plate and scratching the ink, and avoid poor light leakage in the peripheral area of the display device.

[0222] In some embodiments, as Figure 17 、 Figure 18 shown, the back plate 1 further includes:

[0223] A shielding part 10, located on the side of the first bonding layer 8 away from the accommodation space A; in the direction perpendicular to the bottom plate 101, the orthographic projection of the shielding part 10 surrounds the orthographic projection of the first bonding layer 8.

[0224] In the display device provided by the embodiments of the present disclosure, a shielding part is arranged on the side of the first bonding layer away from the accommodation space, so as to shield the first bonding layer and avoid the first bonding layer being visible and affecting the appearance effect.

[0225] In some embodiments, as Figure 17As shown, the shielding portion 10 is connected to the side plate 102 on the side where the first surface faces the cover plate 7. In the direction perpendicular to the bottom plate 101, the orthographic projection of the shielding portion 10 surrounds the orthographic projection of the cover plate 7; in the direction perpendicular to the bottom plate 101, the distance h11 from the shielding portion 10 to the surface of the cover plate 7 away from the bottom plate 101 is greater than or equal to 0 and less than or equal to the thickness h12 of the cover plate 7. Thus, the shielding effect of the shielding portion on the first adhesive layer can be ensured. In a specific implementation, the shielding portion is integrally connected to the side plate, that is, it is equivalent to the side plate being provided with a skirt surrounding the cover plate, thereby shielding the area between the cover plate and the first surface and shielding the first adhesive layer.

[0226] In some embodiments, as Figure 17 shown, in the direction parallel to the plane where the cover plate 7 is located, the distance between the shielding portion 10 and the cover plate 7 is greater than 0.

[0227] Alternatively, in some embodiments, as Figure 18 shown, the shielding portion 10 is located between the first surface and the cover plate 7.

[0228] In some embodiments, the shielding portion is a foam adhesive.

[0229] In some embodiments, to ensure the shielding effect of the shielding portion on the first adhesive layer, as Figure 18 shown, the width h2 of the shielding portion 10 is greater than or equal to 0.6 mm. Specifically, the width of the shielding portion can be set according to the actual space. For example, h2 is equal to 2 mm.

[0230] In some embodiments, the distance h3 between the shielding portion 10 and the edge of the side plate away from the accommodation space is greater than or equal to 0.6 mm and less than or equal to 1 mm.

[0231] In some embodiments, as Figure 18 shown, the distance between the shielding portion 10 and the first adhesive layer 8 is greater than 0.

[0232] In some embodiments, as Figure 19 shown, the display device further includes:

[0233] A plurality of height-limiting portions 9, located between the first surface 102-4 and the cover plate 7 and on the side of the first adhesive layer 8 facing the accommodation space; in the direction perpendicular to the bottom plate 101, the thickness of the first adhesive layer 8 is equal to the thickness of the height-limiting portion 9.

[0234] In the display device provided by the embodiments of the present disclosure, a height-limiting portion is provided on the side of the first adhesive layer facing the accommodation space, so that the height of the first adhesive layer can be limited by the height-limiting portion, which is beneficial to the continuous setting of the first adhesive layer and improves the sealing effect of the first adhesive layer.

[0235] In some embodiments, in the direction perpendicular to the bottom plate, asFigure 20 As shown, the shape of the region surrounded by the orthographic projection of the first adhesive layer 8 and the height-limiting portion 9 is approximately a rectangular region C. At least one height-limiting portion 9 is provided on one side of each side of the rectangular region C.

[0236] In some embodiments, as Figure 20 shown, in the arrangement direction of the first adhesive layer 8 and the height-limiting portion 9, the width h4 of the height-limiting portion 9 is greater than or equal to 0.6 mm; in the extending direction of the height-limiting portion 9, the length h5 of the height-limiting portion 9 is greater than or equal to 10 mm; if a plurality of height-limiting portions 9 are provided on one side of each side of the rectangular region C, the distance h15 between two adjacent height-limiting portions 9 is greater than or equal to 130 mm and less than or equal to 150 mm; in the extending direction of the height-limiting portion 9, the distance h16 between the height-limiting portion 9 closest to the edge of the first surface 102-4 and the edge of the first surface 102-4 is greater than or equal to 30 mm and less than or equal to 50 mm. Thus, it can be ensured that the height-limiting portion plays a role in limiting the height of the first adhesive layer.

[0237] In some embodiments, the height-limiting portion is connected to the side plate through a fifth adhesive material; the fifth adhesive material is, for example, a double-sided adhesive.

[0238] In some embodiments, as Figure 19 shown, the first adhesive layer 8 is in contact with the height-limiting portion 9.

[0239] In some embodiments, when the display device includes an occlusion portion, the occlusion portion is located on the side of the first adhesive layer away from the height-limiting portion.

[0240] In some embodiments, as Figure 8 , Figure 14 , Figures 16 - 18 shown, at least the surface B of the side plate 102 away from the accommodation space A is a curved surface.

[0241] In the related art, the outer surface of the side plate is perpendicular to the bottom plate, so that there is a right-angle area on the outer surface of the back plate, and this right-angle area is prone to being knocked during the preparation process of the display device. The outer surface of the back plate needs to be painted for protection in the same layer. If the outer surface is knocked, it is easy to cause the problem of paint peeling.

[0242] In the display device provided by the embodiments of the present disclosure, at least the surface of the side plate away from the accommodation space is a curved surface. Compared with the case where the outer surface of the side plate is perpendicular to the bottom plate, the situation of the back plate being knocked can be reduced, and the problem of paint peeling on the outer surface of the back plate can be avoided.

[0243] In some embodiments, it can also be that the surfaces of the side plate and a partial area of the bottom plate at the connection with the side plate away from the accommodation space are curved surfaces.

[0244] In some embodiments, the radius of curvature of at least the surface of the side plate away from the accommodation space is 0.5 mm.

[0245] In some embodiments, as Figure 21 shown, the display device further includes: a chip - on - film 11 bonded to the display panel 12 on the side away from the bottom plate 101; the chip - on - film 11 includes: a first flexible circuit board 1101, a heat - dissipation tape 1102, and a conductive tape 1103 which are stacked; the first flexible circuit board 1101 is bonded to the display panel 12.

[0246] It should be noted that, in some embodiments, as Figure 21 shown, the chip - on - film 11 needs to extend to the outside of the backplane 1. In the area where the chip - on - film 11 extends to the outside of the backplane 1, the side plate 101 has a removal area. In this area, the side plate 101 is not bonded to the cover plate 7 through the first adhesive layer 8, but the conductive tape 1103 is bonded to the cover plate 7 through the first adhesive layer 8. Specifically, the middle frame 6 further includes a third part 603 connected to the second part 602 and extending to the outside of the side plate 102; the chip - on - film 11 extends to the side of the third part 603 away from the side plate 102.

[0247] In some embodiments, as Figure 22 shown, the heat - dissipation tape 1102 includes: a conductive substrate 11021, an insulating and heat - conductive adhesive layer 11022 located between the conductive substrate 11021 and the first flexible circuit board 1101, a heat - radiation layer 11023 located between the conductive substrate 11021 and the conductive tape 1103, and a heat - equalizing layer 11024 between the conductive substrate 11021 and the insulating and heat - conductive adhesive layer 11022.

[0248] Specifically, as Figure 21 shown, the display device further includes: a driving chip 29 bonded to the first flexible circuit board 1101. There is an accommodation space D for the driving chip 29 on the outside of the side plate 102 and the third part 603 of the middle frame 6. Thus, the chip - on - film 11 extends to the side of the third part 603 away from the side plate 102, so that the driving chip 29 is fixed in the accommodation space D on the outside of the side plate 102 and the third part 603 of the middle frame 6.

[0249] For the display device provided by the embodiments of the present disclosure, the chip - on - film includes a heat - dissipation tape provided on one side of the flexible circuit board, so that the heat generated by the driving chip can be dissipated. It also includes a conductive tape, so that electromagnetic interference can be avoided.

[0250] In some embodiments, as Figure 23 shown, the first flexible circuit board 1101 includes a touch - signal line area E1, and the touch - signal line area E1 includes a plurality of touch - signal lines 11011.

[0251] It should be noted that since both the conductive tape and the heat dissipation tape include a conductive layer, a capacitor is formed by the conductive layer of the conductive tape, the conductive substrate of the heat dissipation tape, and the insulating and heat-conductive adhesive layer of the heat dissipation tape. In the touch signal line area, this capacitor will interfere with the touch signal lines, generating touch noise, and easily causing defects such as touch ghost points or no touch operation, which affects the touch recognition accuracy.

[0252] In some embodiments, both the conductive substrate and the conductive tape are grounded.

[0253] In the display device provided by the embodiments of the present disclosure, both the conductive substrate and the conductive tape are grounded, so that the electric potentials of the conductive substrate and the conductive tape are the same, and no electric field is formed between them, and thus no interference is caused to the touch signal, which can improve the touch recognition accuracy.

[0254] In some embodiments, the conductive tape and the conductive substrate are connected to the backplane, so as to ground the conductive tape and the conductive substrate. Specifically, the surface of the backplane facing away from the accommodation space is referred to as the back surface, which can be as Figure 21 shown. The heat dissipation tape 1102 and the conductive tape 1103 in the flip-chip film 11 extend to the back surface of the backplane 1 and are connected to the backplane 1 at the back surface.

[0255] Alternatively, in some embodiments, the heat radiation layer 11023 is a conductor heat radiation layer 11023, and the heat radiation layer 11023, the conductive substrate 11021, and the conductive tape 1103 are all grounded.

[0256] In the display device provided by the embodiments of the present disclosure, the conductive substrate, the heat radiation layer, and the conductive tape are all grounded, so that the electric potentials of the adjacent three conductive layers are the same, no potential sandwich layer is formed between the conductive tape and the heat dissipation tape, and thus no capacitor is formed and no interference is caused to the touch signal, which can improve the touch recognition accuracy.

[0257] In some embodiments, the conductive tape, the heat radiation layer, and the conductive substrate are connected to the backplane, so as to ground the conductive tape, the heat radiation layer, and the conductive substrate. Specifically, the surface of the backplane facing away from the accommodation space is referred to as the back surface, which can be as Figure 21 shown. The heat dissipation tape 1102 and the conductive tape 1103 in the flip-chip film 11 extend to the back surface of the backplane 1 and are connected to the backplane 1 at the back surface.

[0258] Alternatively, in some embodiments, as Figure 24 shown, the orthographic projections of the heat dissipation tape 1102 and the conductive tape 1103 on the first flexible circuit board (not shown) do not overlap with the touch signal line area E1. That is, both the heat dissipation tape 1102 and the conductive tape 1103 have a removal area F1 corresponding to the touch signal line area E1.

[0259] It should be noted that the inventors of the present disclosure verified that even if the heat dissipation tape and the conductive tape are avoided from the driving chip bonding area, the touch accuracy still cannot be improved. It is speculated that the area most severely affected by the capacitance interference between the heat dissipation tape and the conductive tape should be the area where the touch signal lines are arranged.

[0260] In the display device provided by the embodiment of the present disclosure, the orthographic projections of the heat dissipation tape and the conductive tape on the first flexible circuit board do not overlap with the touch signal line area. That is, the heat dissipation tape and the heat conduction tape are removed on one side of the touch signal line area, so as to avoid the capacitance between the heat dissipation tape and the conductive tape from interfering with the touch signal lines in the touch signal line area, and the touch recognition accuracy can be improved.

[0261] In some embodiments, as Figure 23 shown, the first flexible circuit board 1101 includes two touch signal line areas E1, and also includes a display signal line area E2 located between the two touch signal line areas E1; the display signal line area E2 includes a plurality of display signal lines 11012; the first flexible circuit board 1101 also includes a first bonding electrode (not shown) located in the first bonding area E3 and a second bonding electrode (not shown) located in the second bonding area E4. The display signal lines 11012 and the touch signal lines 11011 are respectively electrically connected to different first bonding electrodes (not shown). The first bonding electrode is bonded to the display panel. The display signal lines 11012 and the touch signal lines 11011 are also electrically connected to the driving chip 29. The first bonding electrode in the first bonding area E3 is bonded to the display panel. The display device further includes: a printed circuit board, and the second bonding electrode in the second bonding area E4 is bonded to the printed circuit board.

[0262] In some embodiments, the orthographic projections of the heat dissipation tape and the conductive tape on the first flexible circuit board overlap with the display signal line area. The orthographic projections of the heat dissipation tape and the conductive tape on the first flexible circuit board may also overlap with the first bonding area and the second bonding area.

[0263] In some embodiments, the display panel is a liquid crystal display panel; the liquid crystal display panel includes: an array substrate and a counter substrate disposed opposite to each other, and a liquid crystal layer located between the array substrate and the counter substrate; the counter substrate is located on the side of the array substrate away from the bottom plate;

[0264] The array substrate includes: a plurality of sub-pixel units, a plurality of data lines and a plurality of scan lines electrically connected to the plurality of sub-pixel units, and a plurality of third bonding electrodes; the sub-pixel units include thin film transistors and pixel electrodes; the scan lines and the data lines extend to the peripheral area of the array substrate and are electrically connected to the second bonding electrodes; the chip-on-film is bonded to the third bonding electrodes of the array substrate.

[0265] The opposing substrate includes a black matrix and a plurality of color filters; the black matrix includes a plurality of opening areas, and the color filters are at least located in the opening areas; the plurality of color filters include, for example, a plurality of red color filters, a plurality of blue color filters, and a plurality of green color filters;

[0266] The array substrate or the opposing substrate further includes a common electrode; the array substrate further includes a common electrode line electrically connected to the common electrode and the bonding electrode.

[0267] In some embodiments, as Figure 21 shown, the printed circuit board 30 bonded to the first flexible circuit board 1101 is fixed to the back surface of the backplane 1.

[0268] It should be noted that for large-size display devices, taking a 44.8-inch rectangular display panel as an example, the maximum length of the backplane is about 1.2 meters, and a die-cast magnesium alloy is usually selected as the backplane. In a low-temperature environment, the magnesium alloy backplane bends and deforms. The printed circuit board is fixed to the backplane, and the printed circuit board is subject to bending torque. The torque is transmitted to the display panel through the first flexible circuit board, and the display panel is stressed to cause display defects.

[0269] In some embodiments, as Figure 25 shown, the display device further includes a second adhesive layer 13;

[0270] One end of the conductive tape 1103 extends to be connected to the cover plate 7; the second adhesive layer 13 is located at the connection where one end of the conductive tape 1103 extends to be connected to the cover plate 7, and the second adhesive layer 13 contacts the surface of the conductive tape 1103 on the side away from the first flexible circuit board 1101 and the surface of the cover plate 7 facing the bottom plate 101.

[0271] For the display device provided by the embodiments of the present disclosure, a second adhesive layer that contacts both of them is provided at the connection between the conductive tape and the cover plate. Thus, the second adhesive layer can fix the conductive tape and the cover plate, block the transmission path of the torque of the bottom plate, the printed circuit board, and the first flexible circuit board, and prevent the display panel from being stressed to cause display defects.

[0272] In some embodiments, the second adhesive layer is an ultraviolet curable adhesive or an RTV adhesive.

[0273] In some embodiments, as Figure 26 shown, the printed circuit board 30 bonded to the flip chip film (not shown) is the first printed circuit board 14; the display device further includes a second printed circuit board 15, and a second flexible circuit board 16 bonded to the first printed circuit board 14 and the second printed circuit board 15;

[0274] The second flexible circuit board 16 includes: a plurality of connection areas 1601 and a plurality of bending areas 1602, the connection areas 1601 and the bending areas 1602 are alternately connected, and the first printed circuit board 14 and the second printed circuit board 15 are respectively bonded to different connection areas 1601;

[0275] The display device further includes: a plurality of buffer parts 17; the buffer parts 17 are in contact with the bending areas 1602, and the buffer parts 17 are located between two connection areas 1601 respectively connected to the bending areas 1602.

[0276] In the display device provided by the embodiment of the present disclosure, the first printed circuit board and the second printed circuit board communicate through the second flexible circuit board. The second flexible circuit board includes a bending area, that is, the first printed circuit board and the second printed circuit board are electrically connected through the bent second flexible circuit board, so that the occupied space of the first printed circuit board and the second printed circuit board can be saved. However, the flexible circuit board is prone to breakage risks when bent.

[0277] In the display device provided by the embodiment of the present disclosure, buffer parts are arranged at the bending areas of the second flexible circuit board and at the two connection areas connected to the bending areas. Thus, the buffer parts can buffer the stress of the bent second flexible circuit board, and further can avoid the bending areas of the second flexible circuit board from breaking, improving the yield of the display device.

[0278] In some embodiments, the buffer part is a buffer foam.

[0279] In specific implementation, the second printed circuit board is a timing control printed circuit board, which is used to provide control signals to the first printed circuit board through the second flexible circuit board. The first printed circuit board generates display driving signals, touch signals, etc. under the control of the control signals.

[0280] In some embodiments, as Figure 27 shown, the display panel 12 includes a back surface 1202 facing the bottom plate (not shown), and a front surface 1201 located on the side of the back surface 1202 away from the bottom plate (not shown). The chip-on-film 11 is bonded to the display panel 12 on the front surface 1201;

[0281] The display device further includes: a third adhesive layer 18 located on the back surface 1202. The chip-on-film 11 is bonded to the back surface 1202 through the third adhesive layer 18.

[0282] In the display device provided by the embodiment of the present disclosure, the chip-on-film is fixed to the back surface of the display panel through the third adhesive layer. Thus, when the chip-on-film needs to be bent and assembled with the backplane, the flexible circuit board of the chip-on-film can be prevented from being torn, and display defects can be avoided.

[0283] In some embodiments, as Figure 27As shown, the first flexible circuit board 1101 of the flip-chip thin film 11 is bonded to the back surface 1202 through the third bonding layer 18.

[0284] In some embodiments, as Figure 27 shown, the third bonding layer 18 is adjacent to the edge of the back surface 1202 of the display panel 12. In the extending direction perpendicular to this edge, the width h6 of the third bonding layer 18 is greater than or equal to 3 mm; in the extending direction perpendicular to this edge, the width h7 of the contact area between the third bonding layer 18 and the flip-chip thin film 11 is greater than or equal to 3 mm. Figure 27 In the example, h6 = h7 is taken as an example for illustration.

[0285] In some embodiments, the third bonding layer is a polyester resin (Polyethylene terephthalate, PET) tape. That is, the third bonding layer is a tape with acrylic adhesive coated on both sides of PET.

[0286] In some embodiments, as Figure 28 shown, the display device further includes:

[0287] A reflective sheet 19, located between the bottom plate 101 and the light guide plate 2;

[0288] A fourth bonding layer 20, located between the bottom plate 101 and the reflective sheet 19; as Figure 29 shown, the orthographic projection of the fourth bonding layer 20 on the reflective sheet 19 is adjacent to the edge 1901 of the reflective sheet 19. In the extending direction of this edge 1901, the length h8 of the orthographic projection of the fourth bonding layer 20 on the reflective sheet 19 is less than the length h9 of this edge 1901.

[0289] In the related art, the length of the bonding layer that fixes the reflective sheet to the bottom plate is equal to the length of the reflective sheet. For large-size display products, the size of the reflective sheet is large. The fact that the length of the bonding layer that fixes the reflective sheet to the bottom plate is equal to the length of the reflective sheet will cause the reflective sheet to wrinkle, affecting the flatness of the reflective sheet and the uniformity of the light output brightness of the backlight module.

[0290] In the display device provided by the embodiments of the present disclosure, the length of the fourth bonding layer is less than the length of the edge of the reflective sheet, so as to avoid the problem that the large-size reflective sheet wrinkles when fixed to the bottom plate through the bonding layer, and improve the uniformity of the light output brightness of the backlight module.

[0291] In some embodiments, as Figure 29 shown, the ratio of the length h8 of the orthographic projection of the fourth bonding layer 20 on the reflective sheet 19 to the length h9 of the adjacent edge 1901 of the reflective sheet 19 is 1:3.

[0292] In some embodiments, as Figure 29As shown, the edge 1901 of the reflective sheet adjacent to the fourth adhesive layer 20 has a third axis of symmetry 19011, and the orthographic projection of the fourth adhesive layer 20 on the reflective sheet 19 overlaps with the third axis of symmetry 19011.

[0293] In some embodiments, as Figure 29 shown, on both sides of the third axis of symmetry 19011, the widths of the orthographic projections of the fourth adhesive layer 20 on the reflective sheet 19 in the direction perpendicular to the third axis of symmetry 19011 are equal. That is, the third axis of symmetry 19011 bisects the orthographic projection of the fourth adhesive layer 20 on the reflective sheet 19.

[0294] In some embodiments, as Figure 29 shown, the shape of the reflective sheet 19 is rectangular, and the orthographic projection of the fourth adhesive layer 20 on the reflective sheet 19 is adjacent to the long side of the rectangle.

[0295] In some embodiments, the fourth adhesive layer is double-sided tape.

[0296] In some embodiments, the display device provided by the embodiments of the present disclosure is: a vehicle-mounted display device. Other essential components of this display device should be understood by those of ordinary skill in the art and will not be elaborated here, nor should it be regarded as a limitation to the present disclosure.

[0297] In summary, for the display device provided by the embodiments of the present disclosure, a first lug is provided on the side surface of the first body of the light guide plate, and the first lug can extend into the first groove of the side plate, thereby realizing the assembly of the light guide plate and the back plate. Moreover, since the first lug is provided on the side surface of the first body of the light guide plate, for the production of a large-sized light guide plate, a cutting process can be used to form a light guide plate with the first lug. Thus, there is no need to use an injection molding process to form a boss, and the assembly of the light guide plate and the back plate can also be realized, that is, the fixation of the light guide plate is achieved.

[0298] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0299] Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalent technologies, the present disclosure also intends to include these modifications and variations.

Claims

1. A display device, wherein, The display device includes: A backplane, including: a bottom plate, and side plates connected to the bottom plate at the sides of the bottom plate; the side plates intersect with the bottom plate; the bottom plate and the side plates form a receiving space, and the surface of the side plate facing the receiving space includes a plurality of first grooves; A light guide plate, including: a first body portion located in the receiving space, and a plurality of first lugs; the first body portion is disposed opposite to the bottom plate, and the first body portion includes: a first lower surface opposite to the bottom plate, a first upper surface located on a side of the lower surface away from the bottom plate, and a first side surface connecting the first upper surface and the first lower surface; the first lugs are located on the first side surface, and the first lugs extend from the receiving space into the first grooves.

2. The display device according to claim 1, wherein, The display device further includes: Elastic buffer pads, located in the first grooves; at least part of the first lugs are in contact with the elastic buffer pads.

3. The display device according to claim 2, wherein, The elastic buffer pads have second grooves; the second grooves have at least openings facing the receiving space, and at least part of the first lugs extend into the second grooves to contact the elastic buffer pads.

4. The display device according to claim 3, wherein, The side plate includes: a first sub-side plate and a second sub-side plate disposed opposite to each other, a third sub-side plate connecting the two at one end of the first sub-side plate and the second sub-side plate, and a fourth sub-side plate connecting the two at the other end of the first sub-side plate and the second sub-side plate; The plurality of first grooves include: a plurality of first-type first grooves, and a plurality of second-type first grooves; Both the third sub-side plate and the fourth sub-side plate include the first-type first grooves, and the first-type first grooves are adjacent to the second sub-side plate; in the first-type first grooves, the second grooves further have openings facing the bottom plate; In the second-type first grooves, the second grooves further have openings away from the bottom plate; Part of the first lugs extend into the first-type first grooves, and part of the first lugs extend into the second-type first grooves.

5. The display device according to claim 4, wherein, The second grooves in the first-type first grooves are divided into: a first region, and a second region located on a side of the first region away from the second sub-side plate; In a direction perpendicular to the bottom plate, the depth of the first region is greater than the depth of the second region.

6. The display device according to any one of claims 3 to 5, wherein, The display device further includes: A light source assembly, disposed opposite to a partial area of the first side surface of the first body portion; the first lugs are located outside the area opposite to the light source assembly.

7. The display device according to claim 6, wherein, The shape of the orthographic projection of the first body portion in a direction perpendicular to the bottom plate is a rectangle; the first body portion includes: two long edges parallel to each other, and two short edges parallel to each other, and the length of the long edges is greater than the length of the short edges; The first side surface includes: a first sub-side surface and a second sub-side surface respectively corresponding to the two long edges, and a third sub-side surface and a fourth sub-side surface respectively corresponding to the two short edges; The first sub-side surface is disposed opposite to the light source assembly, and the plurality of first lugs are respectively located on the second sub-side surface, the third sub-side surface, and the fourth sub-side surface; The number of the first lugs located on the third sub-side surface is equal to the number of the first lugs located on the fourth sub-side surface; the number of the first lugs located on the second sub-side surface is greater than or equal to the number of the first lugs located on the third sub-side surface.

8. The display device according to any one of claims 2 to 5 and 7, wherein, The display device further includes: At least one layer of optical film, located on a side of the light guide plate away from the bottom plate; the optical film includes: a second main body portion located in the accommodation space, and a plurality of second lugs; the second main body portion is disposed opposite to the first main body portion, the second main body portion includes: a second lower surface opposite to the first main body portion, a second upper surface located on a side of the second lower surface away from the bottom plate, and a second side surface connecting the second upper surface and the second lower surface; the second lugs are located on the second side surface, and the second lugs extend from the accommodation space into the first groove, and the second lugs are in contact with the elastic buffer pad.

9. The display device according to claim 8, wherein, The plurality of first grooves include: a first type of first groove and a second type of first groove, and the second lugs extend into the second type of first groove; At least some of the second lugs and the first lugs extend into the same first groove; The second lugs and the first lugs extending into the same first groove overlap in a positive projection in a direction perpendicular to the bottom plate.

10. The display device according to claim 9, wherein, The display device includes a light source assembly; an area of the second side surface facing away from the light source assembly includes the second lugs; The number of the second lugs is greater than or equal to the number of the first lugs.

11. The display device according to claim 10, wherein, The shapes of the positive projections of the first main body portion and the second main body portion in a direction perpendicular to the bottom plate are both rectangular; The first side surface includes: a first sub-side surface, a second sub-side surface, a third sub-side surface, and a fourth sub-side surface; The second side surface includes: a fifth sub-side surface on the same side as the first sub-side surface, a sixth sub-side surface on the same side as the second sub-side surface, a seventh sub-side surface on the same side as the third sub-side surface, and an eighth sub-side surface on the same side as the fourth sub-side surface; the plurality of second lugs are respectively located on the sixth sub-side surface, the seventh sub-side surface, and the eighth sub-side surface; The number of the second lugs located on the seventh sub-side surface is equal to the number of the second lugs located on the eighth sub-side surface; the number of the second lugs located on the sixth sub-side surface is greater than the number of the second lugs located on the seventh sub-side surface; The number of the second lugs located on the seventh sub-side surface is less than or equal to the number of the first lugs located on the third sub-side surface; the number of the second lugs located on the sixth sub-side surface is greater than the number of the first lugs located on the second sub-side surface.

12. The display device according to claim 8, wherein, The display device includes a plurality of layers of the optical film stacked; the second lugs included in the plurality of layers of the optical film overlap in a positive projection in a direction perpendicular to the bottom plate.

13. The display device according to claim 12, wherein, The display device further includes: A first adhesive material, located between the light guide plate and the optical film; A second adhesive material, located between two adjacent layers of the optical film.

14. The display device according to claim 8, wherein, The display device further includes: The middle frame is connected to the side plate on the side of at least one layer of the optical film away from the light guide plate in the accommodation space; The third adhesive material is located between the middle frame and the optical film.

15. The display device according to claim 14, wherein, The surface of the side plate facing the accommodation space includes: a third side surface and a fourth side surface intersecting with the bottom plate, and a fifth side surface connecting the third side surface and the fourth side surface; the third side surface is connected to the bottom plate, and the fifth side surface is parallel to the surface of the bottom plate facing the accommodation space; the third side surface includes the first groove, and the middle frame is located on the side of the fifth side surface away from the third side surface; The side plate further includes: a first surface connected to the fourth side surface; the first surface is located on the side of the fourth side surface away from the bottom plate, and the first surface is parallel to the surface of the bottom plate facing the accommodation space; The middle frame includes: a first part opposite to the fourth side surface, and a second part connected to the first part and opposite to the fifth side surface; the distance from the first part to the first surface is greater than or equal to 0.3 mm and less than or equal to 0.5 mm; or, The middle frame is disposed opposite to the fifth side surface.

16. The display device according to claim 14, wherein, The display device further includes: A cover plate, disposed opposite to the back plate; A first adhesive layer, located between the first surface and the cover plate; in a direction perpendicular to the bottom plate, the projection of the first adhesive layer surrounds the projection of the accommodation space; A plurality of height-limiting parts, located between the first surface and the cover plate and on the side of the first adhesive layer facing the accommodation space; in a direction perpendicular to the bottom plate, the thickness of the first adhesive layer is equal to the thickness of the height-limiting parts.

17. The display device according to any one of claims 14 to 16, wherein, The back plate further includes: A cover plate, disposed opposite to the back plate; A first adhesive layer, located between the first surface and the cover plate; in a direction perpendicular to the bottom plate, the projection of the first adhesive layer surrounds the projection of the accommodation space; A shielding part, located on the side of the first adhesive layer away from the accommodation space; in a direction perpendicular to the bottom plate, the orthographic projection of the shielding part surrounds the orthographic projection of the first adhesive layer; The shielding part is connected to the side plate on the side of the first surface facing the cover plate, and in a direction perpendicular to the bottom plate, the orthographic projection of the shielding part surrounds the orthographic projection of the cover plate; in a direction perpendicular to the bottom plate, the distance from the shielding part to the surface of the cover plate away from the bottom plate side is greater than or equal to 0 and less than or equal to the thickness of the cover plate; or, The shielding part is located between the first surface and the cover plate.

18. The display device according to any one of claims 2 to 5, 7, 9 to 16, wherein, The display device further includes: a display panel on the side of the optical film away from the bottom plate in the accommodation space, and a chip-on-film bonded to the display panel on the side of the display panel away from the bottom plate; the chip-on-film includes: a first flexible circuit board, a heat dissipation tape, and a conductive tape stacked; the first flexible circuit board is bonded to the display panel; The heat dissipation tape includes: a conductive substrate, an insulating and heat-conductive adhesive layer located between the conductive substrate and the first flexible circuit board, and a heat radiation layer located between the conductive substrate and the conductive tape; The conductive substrate and the conductive tape are both grounded; alternatively, the heat radiation layer is a conductor heat radiation layer, and the heat radiation layer, the conductive substrate, and the conductive tape are all grounded; alternatively, the first flexible circuit board includes a touch signal line area, and the orthographic projections of the heat dissipation tape and the conductive tape on the first flexible circuit board do not overlap with the touch signal line area.

19. The display device according to claim 18, wherein, The display device further includes: a cover plate and a second adhesive layer; One end of the conductive tape extends to be connected to the cover plate; the second adhesive layer is located at the connection where one end of the conductive tape extends to be connected to the cover plate, and the second adhesive layer contacts the surface of the conductive tape on the side away from the first flexible circuit board and the surface of the cover plate facing the bottom plate.

20. The display device according to claim 18, wherein, The display device further includes: a first printed circuit board bonded to the flip chip film, a second printed circuit board, and a second flexible circuit board bonded to the first printed circuit board and the second printed circuit board; The second flexible circuit board includes: a plurality of connection areas and a plurality of bending areas, the connection areas and the bending areas are alternately connected, and the first printed circuit board and the second printed circuit board are respectively bonded to different connection areas; The display device further includes: a plurality of buffer parts; the buffer parts are in contact with the bending areas, and the buffer parts are located between two connection areas respectively connected to the bending areas.

21. The display device according to claim 18, wherein, The display panel includes a back surface facing the bottom plate and a front surface located on the side of the back surface away from the bottom plate, and the flip chip film is bonded to the display panel on the front surface; The display device further includes: a third adhesive layer located on the back surface, and the flip chip film is bonded to the back surface through the third adhesive layer.

22. The display device according to any one of claims 2 to 5, 7, 9 to 16, and 19 to 21, wherein, The display device further includes: a reflective sheet, located between the bottom plate and the light guide plate; a fourth adhesive layer, located between the bottom plate and the reflective sheet; the orthographic projection of the fourth adhesive layer on the reflective sheet is adjacent to the edge of the reflective sheet, and in the extending direction of the edge, the ratio of the length of the orthographic projection of the fourth adhesive layer on the reflective sheet to the length of the edge is 1:

3.

23. The display device according to any one of claims 2 to 5, 7, 9 to 16, 19 to 21, wherein, At least the surface of the side plate away from the accommodation space is a curved surface.

Images