Backlight module assemblable by snap-fitting and display device

Abstract

A backlight module assemblable by snap-fitting, comprising a back plate (10) and a frame (20). The frame (20) is disposed on the back plate (10) in a bonding direction (D1), and the frame (20) is provided with a limiting structure (21). According to the backlight module assemblable by snap-fitting, by means of the back plate (10) and the limiting structure (21) of the frame (20), multiple parts can be mutually fixed and limited. For example, a reflective sheet (30) is disposed on the back plate (10) and is bonded to the limiting structure (21) in the bonding direction (D1); a light guide plate (40) is provided with a mounting structure (41), and the mounting structure (41) is correspondingly bonded to the limiting structure (21) of the frame (20) in the bonding direction (D1), so as to limit the reflective sheet (30) between the back plate (10) and the light guide plate (40); at least one optical film (50) is bonded to the mounting structure (41) of the light guide plate (40); and a light strip (60) is disposed on the back plate (10), and the limiting structure (21) abuts against the light strip (60) so that the light strip (60) is limited. The backlight module assemblable by snap-fitting can improve assembly convenience. Also provided is a display device using the backlight module assemblable by snap-fitting.

Description

Backlight module and display device capable of being assembled Technical Field

[0001] The present application relates to a backlight module that can be assembled in a mosaic manner, in particular to a backlight module that can improve assembly convenience, and a display device using the backlight module that can be assembled in a mosaic manner. Background Art

[0002] Today's backlight modules usually include components such as a backplane, a frame, a reflector, a light guide plate, a light-emitting element, and an optical film. When assembling the backlight module, the frame and the backplane are combined, the light-emitting element is set in the backplane, and then the reflector, light guide plate, and optical film are set on the backplane in sequence to complete the assembly operation.

[0003] However, today's light-emitting elements, reflectors, light guide plates, and optical films are each attached and fixed using adhesive tape, and require an installation jig to precisely align the components. This makes assembly inconvenient and time-consuming. If rework is required, not only will residual adhesive remain on the surface of the components, requiring more manpower to remove the residual adhesive, but more fragile components such as the optical film may also be easily damaged during removal, making them unusable.

[0004] Summary of the Invention

[0005] The main purpose of the present application is to provide a backlight module that can be assembled and fixed to each other, thereby reducing the cost of tape or assembly jigs.

[0006] Another object of the present application is to provide a display device that can be easily reassembled.

[0007] To achieve the aforementioned purpose, the backlight module that can be assembled in this application includes:

[0008] a back plate;

[0009] a frame body, the frame body being arranged on the back plate along a coupling direction, the frame body having a limiting structure;

[0010] a reflective sheet disposed on the back plate and having an assembly portion, the assembly portion being coupled to the limiting structure of the frame along the coupling direction; and

[0011] A light guide plate has a mounting structure, which is correspondingly coupled to the limiting structure of the frame along the coupling direction to limit the assembly portion so as to limit the reflective sheet between the back plate and the light guide plate.

[0012] The backlight module of the present invention can further secure multiple components to each other through the limiting structures of the back plate and the frame. For example, the reflector is connected to the limiting structure of the frame through the assembly portion, and the light guide plate is further connected to the limiting structure of the frame through the mounting structure. Therefore, the assembly portion of the reflector is limited by the light guide plate and the frame, so the reflector and the light guide plate do not need to be fixed with tape. The back plate, the reflector, and the light guide plate are stacked and assembled in sequence in the connection direction, thereby reducing the cost of tape or assembly jigs.

[0013] To achieve the aforementioned purpose, the present application further provides a backlight module that can be assembled and assembled, including:

[0014] a back plate;

[0015] a frame body, the frame body being arranged on the back plate along a coupling direction, the frame body having a limiting structure;

[0016] a light guide plate having a mounting structure with a mounting groove formed therein, wherein the light guide plate is coupled to the limiting structure of the frame along the coupling direction so that the limiting structure of the frame extends into the mounting groove of the mounting structure; and

[0017] At least one optical film has a mounting portion. The at least one optical film is disposed on the light guide plate, and the mounting portion is combined with the mounting structure.

[0018] The backlight module that can be assembled in the present application is capable of fixing and limiting multiple components to each other. For example, the at least one optical film is arranged on the light guide plate by combining the mounting portion with the mounting structure of the light guide plate, and the light guide plate is fixed through the concave-convex fit between the mounting groove of the mounting structure and the limiting structure of the frame. Therefore, the light guide plate and the at least one optical film do not need to be fixed by adhesive tape.

[0019] To achieve the aforementioned purpose, the present application further provides a backlight module that can be assembled and assembled, including:

[0020] a back plate;

[0021] a frame body, the frame body being arranged on the back plate along a coupling direction, the frame body having a limiting wall and a limiting structure arranged at intervals, and an accommodating gap being formed between the limiting structure and the limiting wall along a pushing direction; and

[0022] A light bar is arranged on the back plate and extends into the accommodating gap along the pushing direction. The limiting structure abuts against the light bar to limit the light bar.

[0023] The backlight module that can be assembled and inserted in the present application can fix and limit multiple parts to each other, wherein the frame is combined with the back panel along the combination direction, and the light strip is pushed into the limiting structure of the frame along the pushing direction and extends into the accommodating gap, so that the light strip is limited by the frame and the back panel together, so the light strip does not need to be fixed with tape.

[0024] To achieve the aforementioned objectives, the present application further provides a display device comprising:

[0025] The aforementioned backlight module capable of being assembled and inserted; and

[0026] A display panel is arranged on the backlight module that can be assembled and positioned on the side of the back plate opposite to the combining direction.

[0027] The display device of the present application is applied with the aforementioned interlocking and assembled backlight module. Since the components in the interlocking and assembled backlight module do not need to be fixed with tape, and the various components in the interlocking and assembled backlight module are respectively limited or assembled by the limiting structure of the frame or the installation structure of the light guide plate through different structures, the components do not need to be aligned through a jig, and can be accurately aligned and assembled. Therefore, the convenience of the overall assembly can be improved, the assembly time can be shortened, and the assembly yield can be improved. In addition, the various components can be repeatedly disassembled and assembled, so the rework performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] FIG1 is a perspective diagram of a preferred embodiment of the backlight module that can be assembled in an embedded manner according to the present application.

[0029] FIG2 is a partial three-dimensional schematic diagram of the backlight module that can be assembled in this application.

[0030] FIG3 is a perspective exploded diagram of the backlight module that can be assembled in this application.

[0031] FIG4 is a top plan view of the backlight module that can be assembled in this application.

[0032] FIG5 is a schematic diagram of the AA cross section of FIG4 .

[0033] FIG6 is a schematic diagram of the assembled light strip of the backlight module that can be assembled in an embedded manner according to the present application.

[0034] FIG. 7 is a schematic diagram showing the light strips of the backlight module that can be assembled in a mosaic manner according to the present application.

[0035] FIG8 is a schematic diagram of the assembled light guide plate of the backlight module that can be assembled in an embedded manner according to the present application.

[0036] FIG9 is a schematic side cross-sectional view of a preferred embodiment of the display device of the present application. DETAILED DESCRIPTION

[0037] Please refer to Figures 1 to 5, which are a preferred embodiment of the interlocking and assembled backlight module of the present application. The interlocking and assembled backlight module includes a back panel 10 and a frame 20. The frame 20 is arranged on the back panel 10 along a combination direction D1. The frame 20 has a limiting structure 21. The interlocking and assembled backlight module can include different other components as needed. The other components in the interlocking and assembled backlight module can be directly or indirectly limited by the limiting structure 21 of the frame 20, thereby providing an interlocking and assembled backlight module in which the various components do not need to be fixed by adhesive tape, thereby improving the convenience of the overall assembly of the interlocking and assembled backlight module.

[0038] The following will describe the assembly and combination relationship of different components of the present application respectively, for example, the assembly and combination relationship between the back panel 10, the frame 20, a reflective sheet 30 and a light guide plate 40. As shown in Figure 5, the frame 20 is arranged on the back panel 10 along the combination direction D1, and the frame 20 has the limiting structure 21; the reflective sheet 30 is arranged on the back panel 10 and has an assembly portion 31, and the assembly portion 31 is correspondingly combined with the limiting structure 21 of the frame 20 along the combination direction D1; the light guide plate 40 has a mounting structure 41, and the mounting structure 41 is correspondingly combined with the limiting structure 21 of the frame 20 along the combination direction D1 to limit the assembly portion 31, so as to limit the reflective sheet 30 between the back panel 10 and the light guide plate 40. This embodiment mainly provides a structure for limiting the reflective sheet 30 through the light guide plate 40 and the frame 20. In more detail, the reflective sheet 30 is sandwiched between the back panel 10 and the light guide plate 40, and the edge of the reflective sheet 30 extends toward the frame 20 to form the assembly portion 31. At the same time, the light guide plate 40 also extends toward the frame 20 at the edge corresponding to the assembly portion 31 to form the mounting structure 41. After the assembly portion 31 of the reflective sheet 30 and the limiting structure 21 of the frame 20 are combined with each other, the mounting structure 41 of the light guide plate 40 is combined with the limiting structure 21 of the frame 20 along the combining direction D1, thereby completing the interlocking assembly and positioning of the three components, namely the frame 20, the reflective sheet 30 and the light guide plate 40. In this way, multiple components can be fixed and limited to each other, thereby reducing the cost of tape or assembly jigs. In addition, when heavy work disassembly and assembly is required, it is also convenient to disassemble and separate without generating residual glue or increasing the disassembly and assembly time. In one embodiment, the frame 20 can be coupled to the back plate 10 by coupling a protrusion 23 of the frame 20 to a notch 13 formed on the back plate 10 .

[0039] For example, the assembly and combination relationship between the back panel 10, the frame 20, the light guide plate 40 and the at least one optical film 50 is shown in Figure 5. The frame 20 is arranged on the back panel 10 along the combination direction D1, and the frame 20 has the limiting structure 21; the light guide plate 40 has the mounting structure 41, and the mounting structure 41 is formed with the mounting groove 411. The light guide plate 40 is correspondingly combined with the limiting structure 21 of the frame 20 along the combination direction D1, so that the limiting structure 21 of the frame 20 extends into the mounting groove 411 of the mounting structure 41; the at least one optical film 50 has a mounting portion 51, and the at least one optical film 50 is arranged on the light guide plate 40, and the mounting portion 51 is combined with the mounting structure 41. This embodiment mainly provides an assembly structure for mounting the light guide plate 40 on the frame 20. In more detail, the main body of the at least one optical film 50 is placed on the light guide plate 40, and the edge of the at least one optical film 50 extends toward the frame 20 to form the mounting portion 51. At the same time, the edge of the light guide plate 40 corresponding to the assembly portion 31 also extends toward the frame 20 to form the mounting structure 41. The mounting portion 51 of the optical film 50 and the mounting structure 41 of the light guide plate 40 are combined with each other along the combination direction D1, so that the three components of the frame 20, the light guide plate 40 and the at least one optical film 50 can be assembled and positioned. In this way, multiple materials can be fixed and limited to each other, thereby reducing the cost of tape or assembly jigs. In addition, when heavy work disassembly and assembly is required, it is also convenient to disassemble and separate without generating residual glue or increasing the disassembly and assembly time.

[0040] For example, the assembly relationship between the back panel 10, the frame 20, and a light bar 60 is shown in Figures 6 and 7. The backlight module that can be assembled includes the back panel 10, the frame 20, and the light bar 60. The frame 20 has a limiting wall 22 and a limiting structure 21 arranged at intervals, and an accommodating gap 11 is formed between the limiting structure 21 and the limiting wall 22 along a pushing direction D2. The light bar 60 is provided on the back panel 10 and extends into the accommodating gap 11 along the pushing direction D2. The limiting structure 21 abuts against the light bar 60 to limit the light bar 60. Since the light bar 60 is limited by both the frame 20 and the back panel 10, the light bar 60 does not need to be fixed with tape. This embodiment mainly provides a structure for limiting the light bar 60 through the back panel 10 and the frame 20. In more detail, the frame 20 and the light strip 60 are simultaneously located on one surface of the back panel 10, and the light strip 60 is limited between the limiting wall 22 and the limiting structure 21 of the frame 20. In particular, the light strip 60 is moved along the pushing direction D2 to the accommodating gap 11 between the limiting wall 22 and the limiting structure 21, thereby completing the interlocking assembly and positioning of the three components, namely the back panel 10, the frame 20 and the light strip 60. In this way, multiple materials can be fixed and limited to each other, thereby reducing the cost of tape or assembly jigs, and when heavy work disassembly and assembly is required, it is also convenient to disassemble and separate without generating residual glue or increasing the disassembly and assembly time.

[0041] Based on the above-mentioned assembly and combination relationship implementation patterns between different components, the following features can be added according to product requirements.

[0042] As shown in Figures 6 and 7 , the light bar 60 extends along the insertion direction D2 between the back panel 10 and the limiting wall 22 of the frame 20. The light bar 60 has an abutment portion 61 formed therein. The limiting structure 21 of the frame 20 abuts against the abutment portion 61 of the light bar 60, thereby limiting the position of the light bar 60 in the insertion direction D2. As shown in Figure 2 , the light bar 60 extends along an extension direction D3 and includes a plurality of light-emitting elements 62. The plurality of light-emitting elements 62 are arranged substantially along the extension direction D3 and project light toward the light guide plate 40.

[0043] The back panel 10 has a supporting surface 12, and the light bar 60 is arranged on the supporting surface 12. The limiting structure 21 of the frame 20 has a bottom surface 212 and a guide surface 213. There is a gap between the guide surface 213 and the supporting surface 12 that gradually shrinks along the pushing direction D2. When the top of the abutting portion 61 of the light bar 60 moves along the pushing direction D2 and contacts the guide surface 213 of the limiting structure 21, the smoothness of pushing the light bar 60 can be improved by the guide surface 213. The limiting structure 21 will be pushed by the light bar 60 and elastically displaced in a direction opposite to the combining direction D1. When the top of the abutting portion 61 of the light bar 60 moves along the pushing direction D2 and contacts the guide surface 213 of the limiting structure 21, the smoothness of pushing the light bar 60 can be improved by the guide surface 213. After leaving the limiting structure 21 and entering the accommodating gap 11, the limiting structure 21 is elastically reset so that the bottom surface 212 of the limiting structure 21 abuts against the supporting surface 12 of the back panel 10, and the limiting structure 21 abuts against the side of the abutting portion 61 of the light bar 60, thereby limiting the light bar 60 in the pushing direction D2. Alternatively, the bottom surface 212 of the limiting structure 212 can abut against the top of the abutting portion 61 of the light bar 60, pressing the light bar 60 against the supporting surface 12 of the back panel 10 and limiting the light bar 60. In this way, the purpose of effectively limiting the light bar 60 between the back panel 10 and the limiting structure 21 of the frame 20 can be achieved.

[0044] In addition, as shown in Figure 5, since the reflective sheet 30 of the backlight module that can be assembled in this application is combined with the limiting structure 21 of the frame 20 through the assembly part 31, and the light guide plate 40 is further combined with the limiting structure 21 of the frame 20 through the installation structure 41, the assembly part 31 of the reflective sheet 30 can achieve the purpose of limiting through the light guide plate 40 and the frame 20, so the reflective sheet 30 and the light guide plate 40 do not need to be fixed with tape, and since the light strip 60 has nothing to do with the assembly relationship between the reflective sheet 30 and the light guide plate 40, the backlight module can be installed with light-emitting units assembled in different ways according to product requirements.

[0045] Preferably, the assembly portion 31 of the reflective sheet 30 is formed with an assembly hole 311, and the limiting structure 21 of the frame 20 is formed with a limiting column 211. The reflective sheet 30 is fixed by sleeved with the limiting column 211 of the limiting structure 21 of the frame 20 through the assembly hole 311 of the assembling portion 31. The mounting structure 41 of the light guide plate 40 is formed with a mounting groove 411. The limiting column 211 of the limiting structure 21 passes through the assembly hole 311 of the assembling portion 31 and extends into the mounting groove 411 of the mounting structure 41, thereby improving the assembly stability of the reflective sheet 30, and a concave-convex fit is formed between the limiting structure 21 and the mounting structure 41, which can improve the assembly stability of the light guide plate 40 and improve the effect of limiting the reflective sheet 30. In addition, the limiting post 211 is a polygonal column, the contour of the assembly hole 311 of the assembly portion 31 is a polygon corresponding to the limiting post 211, and the inner contour of the installation groove 411 is also a polygon corresponding to the limiting post 211, thereby improving the accuracy and convenience of installing and aligning the reflector 30 and the light guide plate 40.

[0046] 4, 5 and 8, the limiting wall 22 is formed with a slot 221, and the mounting structure 41 of the light guide plate 40 is formed with a mounting hook 412 protruding therefrom. When the mounting structure 41 is coupled to the limiting structure 21 of the frame 20 along the coupling direction D1, the mounting hook 412 extends into the slot 221 of the limiting wall 22, so that the light guide plate 40 can be limited by the limiting structure 21 of the frame 20 and the limiting wall 22 together, and The end of the mounting hook 412 of the mounting structure 41 extends into the limiting wall 22 along the pushing direction D2, and then protrudes along the combining direction D1 and extends into the card slot 221 of the limiting wall 22, thereby preventing the mounting structure 41 from detaching from the limiting wall 22 along the pushing direction D2. In addition, the mounting hook 412 and the mounting slot 411 of the mounting structure 41 are arranged in a straight line in the pushing direction D2, which can further improve the assembly stability of the light guide plate 40.

[0047] Furthermore, since the at least one optical film 50 is disposed on the light guide plate 40 and fixed by the mounting portion 51 coupled to the mounting structure 41 , the at least one optical film 50 does not need to be fixed by gluing, thereby improving the convenience of assembly and rework. Preferably, the at least one optical film 50 has an opening 501, which is formed on the mounting portion 51, and the mounting structure 41 extends into the opening 501 to fix the at least one optical film 50. Furthermore, before assembling the light guide plate 40, the at least one optical film 50 is sleeved on the mounting structure 41 through the opening 501. The mounting hook 412 of the mounting structure 41 will pass through the opening 501 of the at least one optical film 50 and then extend into the slot 221 of the limiting wall 22. Therefore, the at least one optical film 50 is also limited by the mounting hook 412 through the mounting portion 51, thereby improving the assembly stability of the at least one optical film 50. In addition, the reflective sheet 30 can be installed in the backlight module that can be assembled by other assembly methods. For example, the reflective sheet 30 is directly arranged on the back plate 10 and located between the light guide plate 40 and the back plate 10 to provide a light reflection effect.

[0048] In summary, since the various components in the plug-in assembled backlight module do not need to be fixed with tape, and the various components in the plug-in assembled backlight module are assembled with the limiting structure 21 of the frame 20 or the mounting structure 41 of the light guide plate 40 through different structures, there is no need to align the components through a jig, so the convenience of the overall assembly of the plug-in assembled backlight module can be improved, the assembly time can be shortened, and the assembly yield can be improved. Moreover, the various components can be repeatedly disassembled and assembled, so the reworkability is good. Furthermore, the various components in the plug-in assembled backlight module have different assembly relationships, which can be increased or decreased according to product requirements, thereby improving the application flexibility of this application.

[0049] Please refer to Figure 9, which is a preferred embodiment of the display device of the present application, which includes a backlight module that can be assembled and a display panel 70, which is arranged on the backlight module that can be assembled and located on the side of the back plate 10 opposite to the combination direction D1. The backlight module that can be assembled can cast light on the display panel 70.

[0050] The display device of the present application is applied with the aforementioned interlocking and assembling backlight module. Since the components in the interlocking and assembling backlight module do not need to be fixed by gluing, the convenience of the overall assembly can be improved, the assembly time can be shortened, and the assembly yield rate can be improved. In addition, in the interlocking and assembling backlight module, the frame 20 can include a plurality of the aforementioned limiting structures 21, the light guide plate 40 can include a plurality of the aforementioned mounting structures 41, the reflective sheet 30 can include a plurality of the aforementioned assembly portions 31, and the at least one optical film 50 can include a plurality of the aforementioned mounting portions 51, that is, the interlocking and assembling backlight module can include a plurality of assembly structures to meet the assembly requirements of different products. Preferably, the assembly structure is formed at a corner of the interlocking and assembling backlight module and is located outside the visual area of ​​the display device to avoid affecting the visual effect.

[0051]

Explanation of symbols

[0052] 10: Back panel

[0053] 11: Accommodation gap

[0054] 12: Bearing surface

[0055] 13: Notch

[0056] 20: Frame

[0057] 21: Limiting structure

[0058] 211: Limit column

[0059] 212: Bottom

[0060] 213: Guide surface

[0061] 22: Limit wall

[0062] 221: Card slot

[0063] 23: convex buckle

[0064] 30: Reflective sheet

[0065] 31: Assembly Department

[0066] 311: Assembly hole

[0067] 40: Light guide plate

[0068] 41: Installation structure

[0069] 411: Installation slot

[0070] 412: Install Hook

[0071] 50: Optical film

[0072] 501: Opening

[0073] 51: Installation Department

[0074] 60: Light Bar

[0075] 61: abutment

[0076] 62: Luminous parts

[0077] 70: Display panel

[0078] D1: Binding direction

[0079] D2: Push direction

[0080] D3: extension direction.

Claims

1. A backlight module that can be assembled and assembled, comprising: Back panel; A frame body, the frame body is arranged on the back plate along a combination direction, and the frame body has a limiting structure; A reflector sheet, the reflector sheet is disposed on the back plate and has an assembly portion, the assembly portion is correspondingly combined with the limiting structure of the frame along the combination direction; and The light guide plate has a mounting structure, and the mounting structure is correspondingly combined with the limiting structure of the frame along the combining direction to limit the assembly part, so as to limit the reflection sheet between the back plate and the light guide plate.

2. The backlight module that can be assembled as described in claim 1, wherein the assembling portion of the reflector sheet is formed with an assembling hole, the limiting structure of the frame body is formed with a limiting column, the assembling hole of the assembling portion of the reflector sheet is sleeved on the limiting column of the limiting structure, the mounting structure of the light guide plate is formed with a mounting groove, and the limiting column extends into the mounting groove.

3. The backlight module that can be assembled as described in claim 1 or 2, wherein the frame has a limiting wall, the limiting wall is arranged at an interval with the limiting structure, the limiting wall is formed with a slot, the mounting structure of the light guide plate is protruded to form a mounting hook, and when the mounting structure is coupled to the limiting structure of the frame along the coupling direction, the mounting hook extends into the slot of the limiting wall.

4. The interlocking and assemblable backlight module as described in claim 1 or 2, wherein the interlocking and assemblable backlight module comprises at least one optical film, the at least one optical film has an opening, the at least one optical film is arranged on the light guide plate, and the mounting structure extends into the opening.

5. A backlight module that can be assembled and assembled, comprising: Back panel; A frame body, the frame body is arranged on the back plate along a combination direction, and the frame body has a limiting structure; A light guide plate having a mounting structure, wherein the mounting structure is formed with a mounting groove, and the light guide plate is correspondingly coupled to the limiting structure of the frame along the coupling direction, so that the limiting structure of the frame extends into the mounting groove of the mounting structure; and At least one optical film has a mounting portion, the at least one optical film is disposed on the light guide plate, and the mounting portion is combined with the mounting structure. 6 . The backlight module capable of being assembled in an interlocking manner as claimed in claim 5 , wherein the backlight module capable of being assembled in an interlocking manner comprises a reflective sheet, wherein the reflective sheet is disposed on the back plate and is located between the light guide plate and the back plate.

7. The backlight module that can be assembled as described in claim 5, wherein the mounting portion of the at least one optical film is formed with an opening, the frame has a limiting wall, the limiting wall is arranged at an interval with the limiting structure, the limiting wall is formed with a slot, the mounting structure of the light guide plate is protruded to form a mounting hook, when the mounting structure is combined with the limiting structure of the frame along the combining direction, the mounting hook passes through the opening of the at least one optical film and extends into the slot of the limiting wall.

8. A backlight module that can be assembled and assembled, comprising: Back panel; A frame body, the frame body is arranged on the back plate along the combination direction, the frame body has spaced limiting walls and limiting structures, and an accommodating gap is formed between the limiting structure and the limiting wall along the pushing direction; and The light bar is arranged on the back plate and extends into the accommodating gap along the pushing direction. The limiting structure abuts against the light bar to limit the light bar.

9. The backlight module that can be assembled as described in claim 8, wherein the light strip extends between the back plate and the limiting wall of the frame along the pushing direction, the light strip is formed with a supporting portion, and the limiting structure of the frame abuts against the supporting portion of the light strip, so that the light strip is limited in the pushing direction.

10. The interlocking and assembled backlight module as described in claim 9, wherein the back panel has a bearing surface, the light strip is arranged on the bearing surface, the limiting structure of the frame has a bottom surface and a guide surface, the bottom surface of the limiting structure is against the bearing surface of the back panel, and there is a gap between the guide surface and the bearing surface that gradually shrinks along the pushing direction.

11. An interlocking and assemblable backlight module as described in any one of claims 8 to 10, wherein the interlocking and assemblable backlight module comprises a reflective sheet, a light guide plate and at least one optical film sheet, the reflective sheet is located on the back plate and combined with the limiting structure of the frame, the light guide plate is located on the reflective sheet and combined with the limiting structure of the frame to limit the reflective sheet, and the at least one optical film sheet is combined on the light guide plate.

12. A display device, comprising: The backlight module that can be assembled and inserted as claimed in any one of claims 1 to 11; and The display panel is arranged on the backlight module that can be assembled and embedded, and is located on the side of the back plate opposite to the combining direction.

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