Backlight module and display device

Abstract

The utility model relates to the technical field of displays, and discloses a backlight module and a display device. The backlight module is provided with a light incident side and comprises a back plate and a middle frame. One side of one of the back plate and the middle frame, which is positioned on the light incident side, is provided with a mounting flange, the other three sides of the other one are provided with structural flanges, the back plate and the middle frame are buckled to form a mounting space, the light incident side is provided with a light source, and the light source is arranged on the inner side of the mounting flange. According to the utility model, the characteristic that the four edges of the back plate and the middle frame are folded simultaneously is cancelled, one of the back plate and the middle frame is provided with the mounting flange, and the three surfaces of the other one are provided with the structural flanges, so that when the back plate and the middle frame are buckled with each other, the mounting space can be formed in a surrounding manner, and the mounting of the film layer assembly in the mounting space is not influenced; and meanwhile, the frame size of the backlight module is reduced. The mounting turnup can effectively reduce the influence on the light source when the back plate and the middle frame are buckled, the stability of the light source is ensured, and the quality of the backlight module is further ensured.

Description

Technical Field

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

[0002] The backlight module of the display device in the current vehicle-mounted machine generally adopts the method of a back plate with a middle iron frame or a back plate with a middle plastic frame. Figure 1 It is a schematic diagram of an existing backlight module, such as Figure 1 As shown, the backlight module includes a backplate 100 and a middle frame 200, as well as a film assembly 5 disposed on the inner side of the backplate 100. To achieve the fit between the backplate 100 and the middle frame 200, folding structures are typically provided on all four sides of the backplate 100 and the middle frame 200. These folding structures are correspondingly provided with latching protrusions 101 and latching notches 201. The latching protrusions 101 and latching notches 201 engage to connect the backplate 100 and the middle frame 200. However, since both the backplate 100 and the middle frame 200 have folding structures, and a clearance is required between the latching protrusions 101 and latching notches 201, the frame size of the backlight module is increased in disguise.

[0003] Therefore, there is an urgent need for a backlight module and a display device to solve the above problems. Utility Model Content

[0004] Based on the above, the purpose of the present invention is to provide a backlight module and a display device, which can reduce the size of the backlight display module while ensuring a stable connection between the back plate and the middle frame.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A backlight module, wherein the backlight module is provided with a light incident side and comprises a back plate and a middle frame;

[0007] One of the back panel and the middle frame is provided with a mounting flange on one side located on the light incident side, and the other is provided with structural flanges on the other three sides. The back panel and the middle frame are buckled together to form an installation space. A light source is provided on the light incident side, and the light source is arranged on the inner side of the mounting flange.

[0008] As a preferred solution for the backlight module, the middle frame is provided with the installation flange, and the back panel is provided with the structural flange; the structural flanges on the two adjacent sides of the back panel and the light incident side are intermittently provided, and a first snap-fit ​​edge is provided on the inner side of the discontinuity, and a second snap-fit ​​edge is provided on the corresponding side of the middle frame, and the second snap-fit ​​can be engaged between the structural flange and the first snap-fit ​​edge.

[0009] As a preferred solution for the backlight module, a first bonding edge is provided on the side of the middle frame opposite to the light incident side, and the height of the structural flange of the corresponding side of the back panel is adapted to the first bonding edge so as to be bonded to the first bonding edge by tape.

[0010] As a preferred solution for the backlight module, a snap-fit ​​flange is provided at one end of the middle frame corresponding to the light incident side, the snap-fit ​​flange is connected to the installation flange, and can be snap-fitted to a side of the back plate away from the installation space.

[0011] As a preferred solution for the backlight module, the middle frame is provided with the structural flange, and the back plate is provided with the installation flange; the middle frame is provided with a clip, the clip is connected to the structural flange, and the clip can be clipped to the side of the back plate away from the installation space.

[0012] As a preferred solution of the backlight module, a slot is provided on the back plate at a position corresponding to the buckle, and the buckle is engaged in the slot.

[0013] As a preferred solution for the backlight module, the middle frame is provided with the structural flange, and the back plate is provided with the installation flange; the structural flange is at least partially provided with a first connecting edge, the first connecting edge extends to the side of the back plate away from the installation space, and the side of the back plate away from the installation space is correspondingly provided with a second connecting edge, and the second connecting edge is connected to the first connecting edge.

[0014] As a preferred solution for the backlight module, the middle frame is provided with the structural flange, and the back panel is provided with the installation flange; the structural flange is provided with a plug-in edge, and the back panel is correspondingly provided with a plug-in groove, the plug-in edge can be placed in the plug-in groove, and the structural flange is bonded to the side of the back panel away from the installation space.

[0015] As a preferred solution for the backlight module, a mounting groove is provided on the structural flange of the back panel or the middle frame, and the other one is correspondingly provided with a mounting edge, the mounting edge can be placed in the mounting groove, and the structural flange and the mounting edge are bonded by tape.

[0016] A display device includes a film layer assembly and a backlight module as described in any of the above solutions, wherein the film layer assembly is arranged in the installation space.

[0017] The beneficial effects of the utility model are:

[0018] The present invention eliminates the requirement that the four sides of the back panel and the middle frame are folded up at the same time. Instead, an installation flange is set on one of the two, and a structural flange is set on three sides of the other. This allows the back panel and the middle frame to be buckled together to form an installation space, without affecting the installation of the membrane component within the installation space. At the same time, the frame size of the backlight module is reduced. In actual applications, the thickness of the gap between the two iron parts and the two buckles and the card points can be reduced by about 0.4mm-0.9mm compared to the prior art. It is worth noting that the structural flange is used to connect the back panel and the middle frame, and the installation flange is used to install the light source. By setting an installation flange on one of them, the impact of the back panel and the middle frame on the light source when they are buckled together can be effectively reduced, ensuring the stability of the light source and thus ensuring the quality of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0020] Figure 1 is a schematic diagram of an existing backlight module;

[0021] Figure 2 This is a schematic diagram of the first backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the first backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the second backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the second backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the connection method between the middle frame and the back plate of the first backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0026] Figure 7 This is a schematic diagram of the connection method between the middle frame and the back plate of the first backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0027] Figure 8 This is a schematic diagram of the back plate in the first connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model;

[0028] Figure 9 This is a schematic diagram of the middle frame in the first connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model;

[0029] Figure 10 This is a schematic diagram of the connection method between the middle frame and the back plate of the second backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0030] Figure 11 This is a schematic diagram of the connection method between the middle frame and the back plate of the second backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0031] Figure 12 This is a schematic diagram of the connection method between the middle frame and the back plate of the third backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0032] Figure 13 This is a schematic diagram of the connection method between the middle frame and the back plate of the third backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0033] Figure 14 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 1 ;

[0034] Figure 15 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 2 ;

[0035] Figure 16 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 3 ;

[0036] Figure 17 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 4 ;

[0037] Figure 18 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 1 ;

[0038] Figure 19This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 2 ;

[0039] Figure 20 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 3 ;

[0040] Figure 21 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 4 .

[0041] In the picture:

[0042] 1. Light input side; 2. Light output side; 3. Installation space; 4. Light source; 5. Film components;

[0043] 100, back plate; 101, clamping protrusion; 110, first clamping edge; 120, clamping groove; 130, second connecting edge; 140, plug-in slot; 150, notch; 160, bolt;

[0044] 200, middle frame; 201, bayonet; 210, second clamping edge; 220, first bonding edge; 230, clamping flange; 240, buckle; 250, first connecting edge; 260, plugging edge; 270, installation edge;

[0045] 300, tape;

[0046] 10. Installation flange; 20. Structural flange. DETAILED DESCRIPTION

[0047] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0049] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or removable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0050] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0051] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0052] Figure 2 This is a schematic diagram of the first backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 3 This is a schematic diagram of the first backlight module provided by the specific embodiment of the utility model Figure 2 ; Figure 4 This is a schematic diagram of the second backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 5 This is a schematic diagram of the second backlight module provided by the specific embodiment of the utility model Figure 2 ;like Figure 2-Figure 5 As shown, this embodiment provides a backlight module, which is provided with a light incident side 1, and the backlight module includes a back panel 100 and a middle frame 200; one of the back panel 100 and the middle frame 200 is provided with a mounting flange 10 on one side of the light incident side 1, and the other is provided with structural flanges 20 on the other three sides, the back panel 100 and the middle frame 200 are buckled together to form an installation space 3, and a light source 4 is provided on the light incident side 1, and the light source 4 is arranged on the inner side of the mounting flange 10.

[0053] By eliminating the feature that the four sides of the back panel 100 and the middle frame 200 are folded at the same time, an installation flange 10 is set on one of the two, and a structural flange 20 is set on three sides of the other, so that when the back panel 100 and the middle frame 200 are buckled together, an installation space 3 can also be formed, and it will not affect the installation of the membrane layer component 5 in the installation space 3. At the same time, the frame size of the backlight module is reduced. In actual application, the thickness of the fitting gap between the two iron parts and the two buckles and the card points can be reduced by about 0.4mm-0.9mm compared with the prior art. It is worth noting that the setting of the structural flange 20 is used to connect the back panel 100 and the middle frame 200, and the setting of the installation flange 10 is used for the installation of the light source 4. By setting the installation flange 10 on one of them, the impact of the back panel 100 and the middle frame 200 on the light source 4 when buckled can be effectively reduced, thereby ensuring the stability of the light source 4 and thus ensuring the quality of the backlight module.

[0054] Optionally, the light source 4 is bonded to a side of the mounting flange 10 close to the mounting space 3 , and is used to cooperate with the film layer assembly 5 to realize the display function of the display device.

[0055] Figure 6 This is a schematic diagram of the connection method between the middle frame and the back plate of the first backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 7 This is a schematic diagram of the connection method between the middle frame and the back plate of the first backlight module provided by the specific embodiment of the utility model Figure 2 ; Figure 8 This is a schematic diagram of the back plate in the first connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model; Figure 9 Schematic diagram of the middle frame in the first connection method of the middle frame and the back plate of the backlight module provided by the specific embodiment of the present invention; Figure 6-Figure 9 As shown, in one embodiment, the middle frame 200 is provided with a mounting flange 10, and the back panel 100 is provided with a structural flange 20. To achieve the connection between the back panel 100 and the middle frame 200, the structural flange 20 on the two sides of the back panel 100 adjacent to the light incident side 1 is provided intermittently, and a first snap-fit ​​edge 110 is provided on the inner side of the intermittent portion. The corresponding side of the middle frame 200 is provided with a second snap-fit ​​edge 210, which can be snapped between the structural flange 20 and the first snap-fit ​​edge 110. It can be understood that the first snap-fit ​​edge 110 is provided on the inner side of the structural flange 20, so as not to increase the size of the backlight module, while achieving snap-fit ​​connection with the second snap-fit ​​edge 210 of the middle frame 200.

[0056] Preferably, to ensure the display quality of the backlight unit, the light-emitting side 2 opposite the light-incident side 1 does not employ the arrangement of the first snap-fit ​​edge 110 and the second snap-fit ​​edge 210. Instead, a first adhesive edge 220 is provided on this side. Accordingly, the height of the structural flange 20 on the corresponding side of the backplane 100 matches that of the first adhesive edge 220, allowing the first adhesive edge 220 to abut against the structural flange 20, facilitating bonding with the adhesive tape 300. This arrangement ensures the display quality of the backlight unit while maintaining the size of the backlight unit.

[0057] Furthermore, to ensure the connection strength between backplate 100 and middle frame 200 at light incident side 1 , a snap-fit ​​flange 230 is provided at the end of middle frame 200 corresponding to light incident side 1 . This snap-fit ​​flange 230 is connected to mounting flange 10 and snaps onto the side of backplate 100 facing away from mounting space 3 . Similarly, the provision of snap-fit ​​flange 230 does not affect light source 4 , thereby ensuring the display quality of the backlight module.

[0058] Figure 10 This is a schematic diagram of the connection method between the middle frame and the back plate of the second backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 11 This is a schematic diagram of the connection method between the middle frame and the back plate of the second backlight module provided by the specific embodiment of the utility model Figure 2 ;like Figure 10 and Figure 11 As shown, in one embodiment, the middle frame 200 is provided with a structural flange 20, and the back panel 100 is provided with a mounting flange 10. The structural flange 20 of the middle frame 200 extends to the side of the back panel 100 away from the mounting space 3 and is provided with a snap 240. The snap 240 is engaged with the side of the back panel 100 away from the mounting space 3 to achieve the connection between the back panel 100 and the middle frame 200. The snap connection is more convenient. Specifically, two snaps 240 are spaced apart on each structural flange 20 to ensure a reliable snap connection.

[0059] Furthermore, a slot 120 is provided at the position of the back panel 100 corresponding to the buckle 240, and the buckle 240 is snapped into the slot 120. The setting of the slot 120 ensures that the snap connection does not increase the size of the backlight module, and is conducive to the positioning of the snap connection and improves the firmness of the snap connection.

[0060] Figure 12 This is a schematic diagram of the connection method between the middle frame and the back plate of the third backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 13 This is a schematic diagram of the connection method between the middle frame and the back plate of the third backlight module provided by the specific embodiment of the utility model Figure 2 ;like Figure 12 and Figure 13As shown, in one embodiment, the middle frame 200 is provided with a structural flange 20, and the back panel 100 is provided with a mounting flange 10. The structural flange 20 is at least partially provided with a first connecting edge 250. The first connecting edge 250 extends to the side of the back panel 100 away from the mounting space 3. The side of the back panel 100 away from the mounting space 3 is correspondingly provided with a second connecting edge 130, and the second connecting edge 130 is connected to the first connecting edge 250. By connecting the second connecting edge 130 to the first connecting edge 250 on the side of the back panel 100 away from the mounting space 3, the display performance of the backlight module is not affected, thereby ensuring the display effect of the backlight module.

[0061] Preferably, a notch 150 is provided on the back panel 100 at a position corresponding to the first connecting edge 250, and the second connecting edge 130 is provided corresponding to the notch 150. The first connecting edge 250 can be placed within the notch 150 and connected to the second connecting edge 130. The provision of the notch 150, on the one hand, ensures that the connection between the second connecting edge 130 and the first connecting edge 250 does not increase the size of the backlight module, and on the other hand, provides positioning and guidance for the pre-engagement of the first connecting edge 250 and the second connecting edge 130. Exemplarily, the first connecting edge 250 and the second connecting edge 130 are connected via bolts 160.

[0062] Figure 14 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 1 ; Figure 15 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 2 ; Figure 16 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 3 ; Figure 17 This is a schematic diagram of the fourth connection method between the middle frame and the back plate of the backlight module provided by the specific embodiment of the utility model. Figure 4 ;like Figure 14-17 As shown, in one embodiment, the middle frame 200 is provided with a structural flange 20, and the back panel 100 is provided with a mounting flange 10. The structural flange 20 is provided with an insertion edge 260, and the back panel 100 is provided with a corresponding insertion groove 140. The insertion edge 260 can be placed in the insertion groove 140, and the structural flange 20 is bonded to the side of the back panel 100 away from the installation space 3. The connection method of inserting the insertion edge 260 into the insertion groove 140 and then bonding it makes the structure simpler.

[0063] Figure 18 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 1 ; Figure 19 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 2 ; Figure 20 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 3 ; Figure 21 This is a schematic diagram of the connection method between the middle frame and the back plate of the fifth backlight module provided by the specific embodiment of the utility model Figure 4 ;like Figures 18-21 As shown, in one embodiment, the middle frame 200 is provided with a mounting flange 10, and the back panel 100 is provided with a structural flange 20. The structural flange 20 of the back panel 100 is provided with a mounting groove. The middle frame 200 is correspondingly provided with a mounting edge 270. The mounting edge 270 can be placed in the mounting groove. The structural flange 20 and the mounting edge 270 are bonded together by adhesive tape 300. Similarly, the middle frame 200 is provided with a structural flange 20, and the back panel 100 is provided with a mounting flange 10. The structural flange 20 of the middle frame 200 is provided with a mounting groove. The back panel 100 is correspondingly provided with a mounting edge 270. The mounting edge 270 can be placed in the mounting groove. The mounting groove, the mounting edge 270, and the bonding method are also simple in structure and do not increase the size of the backlight module.

[0064] This embodiment also discloses a display device, comprising a film assembly 5 and a backlight module as described in any of the above solutions, wherein the film assembly 5 is disposed in the installation space 3. The display device has a narrower frame, thus having a better display effect and a better user experience.

[0065] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scope. The content of this specification should not be understood as limiting the present invention.

Claims

1. A backlight module, the backlight module being provided with a light incident side (1), characterized in that: The backlight module comprises a back plate (100) and a middle frame (200); One of the back panel (100) and the middle frame (200) is provided with a mounting flange (10) on one side located at the light incident side (1), and the other is provided with structural flanges (20) on the other three sides. The back panel (100) and the middle frame (200) are buckled together to form a mounting space (3). The light incident side (1) is provided with a light source (4), and the light source (4) is arranged on the inner side of the mounting flange (10).

2. The backlight module according to claim 1, wherein: The middle frame (200) is provided with the installation flange (10), and the back panel (100) is provided with the structural flange (20); the structural flanges (20) on the two sides of the back panel (100) adjacent to the light incident side (1) are intermittently provided, and a first snap-fit ​​edge (110) is provided on the inner side of the intermittent part, and a second snap-fit ​​edge (210) is provided on the corresponding side of the middle frame (200), and the second snap-fit ​​edge (210) can be snapped between the structural flange (20) and the first snap-fit ​​edge (110).

3. The backlight module according to claim 2, wherein: A first bonding edge (220) is provided on the side of the middle frame (200) opposite to the light incident side (1), and the height of the structural flange (20) on the corresponding side of the back panel (100) is adapted to the first bonding edge (220) so as to be bonded to the first bonding edge (220) via the adhesive tape (300).

4. The backlight module according to claim 2, wherein: The middle frame (200) is provided with a snap-fit ​​flange (230) at one end corresponding to the light incident side (1); the snap-fit ​​flange (230) is connected to the installation flange (10) and can be snap-fitted to a side of the back plate (100) away from the installation space (3).

5. The backlight module according to claim 1, wherein: The middle frame (200) is provided with the structural flange (20), and the back plate (100) is provided with the installation flange (10); the middle frame (200) is provided with a buckle (240), the buckle (240) is connected to the structural flange (20), and the buckle (240) can be snapped onto a side of the back plate (100) away from the installation space (3).

6. The backlight module according to claim 5, wherein: The back plate (100) is provided with a slot (120) at a position corresponding to the buckle (240), and the buckle (240) is engaged in the slot (120).

7. The backlight module according to claim 1, wherein: The middle frame (200) is provided with the structural flange (20), and the back plate (100) is provided with the installation flange (10); the structural flange (20) is at least partially provided with a first connecting edge (250), and the first connecting edge (250) extends to the side of the back plate (100) away from the installation space (3), and the side of the back plate (100) away from the installation space (3) is correspondingly provided with a second connecting edge (130), and the second connecting edge (130) is connected to the first connecting edge (250).

8. The backlight module according to claim 1, wherein: The middle frame (200) is provided with the structural flange (20), and the back panel (100) is provided with the installation flange (10); the structural flange (20) is provided with a plug-in edge (260), and the back panel (100) is correspondingly provided with a plug-in groove (140), the plug-in edge (260) can be placed in the plug-in groove (140), and the structural flange (20) is bonded to the side of the back panel (100) away from the installation space (3).

9. The backlight module according to claim 1, wherein: A mounting groove is provided on the structural flange (20) of the back plate (100) or the middle frame (200), and a mounting edge (270) is correspondingly provided on the other. The mounting edge (270) can be placed in the mounting groove, and the structural flange (20) and the mounting edge (270) are bonded to each other by means of an adhesive tape (300).

10. A display device, characterized in that: It comprises a film layer assembly (5) and the backlight module according to any one of claims 1 to 9, wherein the film layer assembly (5) is arranged in the installation space (3).

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