CN116300205A - A backlight module, its assembly method, and display device - Google Patents

Abstract

The embodiment of the disclosure provides a backlight module, an assembly method thereof and a display device. The backlight module comprises a glue frame assembly and a back plate assembly, the glue frame assembly comprises a first glue frame and a second glue frame, the first glue frame and the second glue frame are sequentially connected to form a closed-loop accommodating section, the first glue frame is provided with a first limiting structure towards one side of the accommodating section, the second glue frame is provided with a second limiting structure towards one side of the accommodating section, the back plate assembly comprises a back plate and a luminous substrate, the back plate is in a flat plate shape, the luminous substrate is arranged on the back plate, and the back plate assembly is limited in the accommodating section through the first limiting structure and the second limiting structure. According to the technical scheme, the distance between the light-emitting substrate and the outer frame of the backlight module can be shortened, the screen occupation ratio is increased, the layout available space of the light-emitting substrate is increased, the light-emitting elements on the light-emitting substrate are reduced, the cost is reduced, the experience is improved, and the assembly efficiency and the disassembly efficiency are improved.

Description

A backlight module, its assembly method, and display device

technical field

The present disclosure relates to the technical field of display devices, in particular to a backlight module, an assembly method thereof, and a display device.

Background technique

In related technologies, a display module includes structures such as a display panel and a backlight module, and the backlight module usually adopts a backplane structure and a plastic frame structure for cooperation. However, the plastic frame structure and backplane structure of the display module in the related art will increase the width of the side frame of the backlight module, which is not conducive to the development trend of the narrow frame of the display device, and also has the problem of inconvenient assembly.

Contents of the invention

Embodiments of the present disclosure provide a backlight module, an assembly method thereof, and a display device, so as to solve or alleviate one or more technical problems in the prior art.

As the first aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a backlight module, including a plastic frame assembly and a backplane assembly, the plastic frame assembly includes a first plastic frame and a second plastic frame, the first plastic frame and the The second plastic frame is sequentially connected to form a closed-loop accommodation area. The first plastic frame is provided with a first limiting structure on the side facing the accommodation area, and the second rubber frame is provided with a second limiting structure on the side facing the accommodation area. The back plate The assembly includes a backplane and a light-emitting substrate. The backplane is in the shape of a flat plate. The light-emitting substrate is arranged on the backplane. The backplane assembly is limited in the accommodation area by the first limiting structure and the second limiting structure.

In some possible implementations, the first plastic frame is provided with a first protruding portion and a second protruding portion on one side of the accommodating section, the first protruding portion and the second protruding portion are arranged at intervals, and the first protruding portion A first groove is formed between the part and the second protrusion, the first limiting structure includes the first groove, and the edge of the back plate facing the first plastic frame is located in the first groove and supported by the first protrusion department.

In some possible implementations, the protrusion size of the second protrusion relative to the first rubber frame is smaller than the protrusion size of the first protrusion relative to the first rubber frame.

In some possible implementations, a bent structure protruding from the edge of the backboard is provided on the side of the second plastic frame facing away from the accommodating section, and a second wall facing the accommodating section is formed between the bent structure and the edge of the second plastic frame. The groove, the second limiting structure includes a second groove.

In some possible implementations, at least one first positioning block is provided on the side of the second plastic frame facing the accommodation space, the first positioning block protrudes to the edge of the second plastic frame, and the position of the back plate close to the second plastic frame A slot matching the first positioning block is provided, and the first positioning block is inserted into the slot.

In some possible implementations, there is a first gap between the bending edge of the bending structure and the first positioning block, the size of the first gap is larger than the thickness of the back plate, and the back plate located in the second groove is provided with Elastic pads.

In some possible implementations, the backlight module further includes an optical film layer, and the end of the first plastic frame away from the backplane and/or the end of the second rubber frame away from the backplane is provided with a The third protruding part, the optical film layer is defined between the light-emitting substrate and the third protruding part.

In some possible implementation manners, the third protrusion is provided with a positioning groove, and the second positioning block is inserted into the positioning groove and contacts the optical film layer to position the optical film layer.

In some possible implementations, the backlight module includes a locking structure, the locking structure is arranged at the junction of the first plastic frame and the second rubber frame, and the locking structure includes a locking part, a first locking part arranged on the first rubber frame member and the second locking member arranged on the second rubber frame, when the first rubber frame and the second rubber frame are connected to form a closed-loop accommodation section, the locking part locks and combines the first locking member and the second locking member.

In some possible implementations, the connecting end of the first plastic frame is provided with a first bent portion, and the first bent portion forms a first notch on the side facing the accommodation section, and the first plastic frame is away from the first bent portion. The end surface on one side of the back plate is provided with a first clamping groove, the connection end of the second plastic frame is provided with a protrusion, the protrusion is received at the first notch, and the end surface of the protrusion away from the back plate is provided with a second clamping joint. groove, the locking part is engaged in the first engaging groove and the second engaging groove, the first locking member includes a first bending portion and the first engaging groove, and the second locking member includes a protruding portion and a second engaging groove. groove.

In some possible implementations, the backlight module further includes an adhesive layer, and the adhesive layer is disposed on the end surface of the first plastic frame away from the backplane and the end surface of the second rubber frame away from the backplane.

In some possible implementations, the backplane includes a first surface and a second surface, the light-emitting substrate is disposed on the first surface, the second surface is provided with a locking backplane, the locking backplane is provided with a raised portion, and the raised portion for mounting circuit boards;

The backlight module also includes a clip, which is used for locking the backplane and the circuit board on the second surface of the backplane.

As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a method for assembling a backlight module, which is suitable for assembling the backlight module of the first aspect, and the method includes:

Bonding a light-emitting substrate on one side of the backplane to form a backplane assembly;

Assemble the backplane assembly with the first plastic frame, and limit the edge of the backplane assembly through the first limiting structure;

The first plastic frame and the second plastic frame are connected to form a closed-loop accommodation area, and the backplane assembly is limited in the accommodation area by the first limiting structure and the second limiting structure.

As a third aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a display device including the display module of the embodiment of the first aspect.

The embodiment of the present disclosure adopts the above technical solution to obtain the following beneficial effects: the technical solution of the embodiment of the present disclosure can shorten the distance between the light-emitting substrate and the outer frame of the backlight module, expand the screen ratio, and increase the available space for the layout of the light-emitting substrate. Reduce the number of light-emitting elements on the light-emitting substrate, reduce costs, improve experience, and improve assembly efficiency and disassembly efficiency.

The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by referring to the drawings and the following detailed description.

Description of drawings

In the drawings, unless otherwise specified, the same reference numerals designate the same or similar parts or elements throughout the several drawings. The drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments according to the present disclosure and should not be taken as limiting the scope of the present disclosure.

FIG. 1 is a schematic structural diagram of a backlight module in the related art;

2 is a schematic diagram of the overall structure of the backlight module in an embodiment of the present disclosure;

3 is a top view of a partial structure of a backlight module in an embodiment of the present disclosure;

Fig. 4 is the B-B sectional view of Fig. 3;

Fig. 5 is the C-C sectional view of Fig. 3;

FIG. 6 is a three-dimensional schematic diagram 1 of a partial structure of a backlight module in an embodiment of the present disclosure;

7 is a perspective view II of a partial structure of a backlight module in an embodiment of the present disclosure;

8 is a three-dimensional schematic diagram of a partial structure of a backlight module in an embodiment of the present disclosure;

FIG. 9 is an enlarged schematic diagram of a locking structure in an embodiment of the present disclosure;

Fig. 10 is a perspective schematic diagram of a partial structure of the first plastic frame in an embodiment of the present disclosure;

Fig. 11 is a schematic perspective view of part of the structure of the second plastic frame in an embodiment of the present disclosure;

Fig. 12 is a schematic diagram of a backboard and a locked backboard in an embodiment of the present disclosure;

Fig. 13 is a schematic diagram of installation of a backplane and a circuit board in an embodiment of the present disclosure;

14 is a schematic diagram of the assembly of the backplane assembly and the first plastic frame in an embodiment of the present disclosure;

FIG. 15 is a schematic diagram of assembly of a backplane and a light-emitting substrate in an embodiment of the present disclosure.

Explanation of reference signs:

10. Backlight module;

100. Plastic frame assembly; 200. Backplane assembly; 300. Optical film layer; 400. Locking structure; 500. Adhesive adhesive layer; 600. Clamp;

110, the first plastic frame; 120, the second plastic frame; 130, the third protrusion;

111. The first limiting structure; 112. The first protrusion; 113. The second protrusion; 114. The first groove; 115. The first bending part; 116. The first clamping groove; 117. The first A gap; 1151, the first plate; 1152, the second plate;

121. The second limiting structure; 122. The bending structure; 123. The second groove; 124. The first positioning block; 125. The protrusion; 126. The second clamping groove; 1251. The third plate; four plates;

131, positioning groove; 132, the second positioning block;

210, backboard; 220, light-emitting substrate; 230, elastic spacer; 240, lock the backboard;

211, slotting; 212, the first surface; 213, the second surface;

221. Light emitting unit; 222. Substrate substrate;

241. Raised part;

410, locking part; 420, first locking member; 430, second locking member;

610, the first limiting plate; 620, the connecting plate; 630, the second limiting plate.

Detailed ways

In the following, only some exemplary embodiments are briefly described. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

FIG. 1 is a schematic structural diagram of a backlight module in the related art. As shown in FIG. 1, the backlight module 10 includes a plastic frame assembly 100 and a backplane assembly 200. The backplane assembly 200 is generally of a side-bending design. The backplane assembly 200 can be used for positioning of optical film layers and the plastic frame assembly. 100's of snap. The backplane assembly 200 may include a backplane 210 and a light-emitting substrate 220. The backplane 210 may include a bottom plate and a side plate surrounding at least one edge of the bottom plate and connected to the bottom plate. The bottom plate and the side plates form an accommodation space for accommodating the light-emitting substrate 220. S, the side plate and the plastic frame assembly 100 are engaged and fixed, the light-emitting substrate 220 is positioned according to the back plate 210 and pasted on the bottom plate of the back plate 210, the top surface of the plastic frame assembly 100 is provided with an adhesive layer 500, the adhesive layer 500 can be the foam glue layer. As shown in FIG. 1 , the distance from the light-emitting substrate 220 to the outer frame of the backlight module is a, and the distance a includes the thickness of the side plate of the back plate 210 , the thickness of the plastic frame assembly 200 and the corresponding gap size. In the related art, due to the bending design of the backplane 210, on the one hand, it is inconvenient to assemble the light-emitting substrate 220 and the backplane 210, and on the other hand, it is not conducive to realizing a narrow frame of the display device.

In order to solve the problems of unfavorable realization of the narrow frame effect and inconvenient assembly in the related art, an embodiment of the present disclosure provides a backlight module. The technical solutions of the present disclosure will be described in detail below through examples.

FIG. 2 is a schematic diagram of the overall structure of the backlight module provided by an embodiment of the present disclosure, FIG. 3 is a top view of a part of the structure of the backlight module in an embodiment of the present disclosure, FIG. 4 is a B-B sectional view of FIG. 3 , and FIG. 5 is a view of FIG. C-C section cutaway view. As shown in FIGS. 2 to 5 , an embodiment of the present disclosure provides a backlight module. The backlight module 10 may include a plastic frame assembly 100 and a backplane assembly 200 . The glue frame assembly 100 may include a first glue frame 110 and a second glue frame 120 , and the first glue frame 110 and the second glue frame 120 are sequentially connected to form a closed-loop accommodation area S.

The side of the first plastic frame 110 facing the accommodation section S is provided with a first limiting structure 111 , and the side of the second rubber frame 120 facing the accommodation section S is provided with a second limiting structure 121 . The backplane assembly 200 includes a backplane 210 and a light-emitting substrate 220. The backplane 210 is flat, and the light-emitting substrate 220 is arranged on one side of the backplane 210. For example, the light-emitting substrate 220 can be attached to the backplane 210 by glue or adhesive strips. on the side. The backplane assembly 200 is limited in the accommodation space S by the first limiting structure 111 and the second limiting structure 121 .

It should be noted that the size and shape of the accommodating section S match the backplane assembly 200 . Exemplarily, the cross-sectional shape of the accommodation section S can be rectangular, circular or elliptical, and the size and shape of the accommodation section S are not limited here, and can be set according to actual usage requirements.

The plastic frame assembly 100 is a split design, the plastic frame assembly 100 is connected by the first plastic frame 110 and the second plastic frame 120, the number of the first plastic frame 110 and the second plastic frame 120 can be one or more, each first The plastic frame 110 and the second plastic frame 120 are sequentially connected and assembled and the backplane assembly 200 is limited in the accommodation space S.

It should be noted that the first limiting structure 111 and the second limiting structure 121 are used to limit the degree of freedom of the backplane assembly 200, after the first plastic frame 110 and the second rubber frame 120 are matched, the first limiting structure 111 Cooperate with the second limiting structure 121 to limit the backplane assembly 200 in the accommodation space S. In one embodiment, the first limiting structure 111 can be used to limit the degree of freedom of the backplane assembly 200 in the vertical direction and/or horizontal direction, and the second limiting structure 121 can be used to limit the vertical freedom of the backplane assembly 200. The degrees of freedom in the vertical direction and/or horizontal direction are achieved by the cooperation of the first limiting structure 111 and the second limiting structure 121 , so that the backplane assembly 200 is limited in the accommodation space S.

In the backlight module of the embodiment of the present disclosure, the first plastic frame 110 and the second plastic frame 120 are sequentially connected to form a closed-loop accommodation area S, and the first plastic frame 110 is provided with a first limiting structure 111 on the side facing the accommodation area S, A second limiting structure 121 is provided on a side of the second plastic frame 120 facing the accommodating section S. As shown in FIG. The flat backplane 210 and the light-emitting substrate 220 are assembled to form the backplane assembly 200. When the backplane assembly 200 is assembled, part of the edge of the backplane assembly 200 can be limited and fixed by the first limiting structure 111, and then the second The plastic frame 120 is connected to the first plastic frame 110 so that the second limiting structure 121 can limit the remaining edges of the backplane assembly 200, that is, the backplane assembly 200 can be moved by the first limiting structure 111 and the second limiting structure 121. It is limited in the accommodation interval S.

Compared with the backlight module of the related art, the backlight module of the embodiment of the present disclosure adopts a flat backplane 210, and the backplane 210 no longer has side panels, so that the distance between the light-emitting substrate 220 and the outer frame of the backlight module b no longer includes the thickness of the side panels of the backplane, thus shortening the distance b between the light-emitting substrate 220 and the outer frame of the backlight module, expanding the screen ratio, and increasing the available space for the layout of the light-emitting substrate 220 . In addition, this way, compared with the way of assembling the backlight module in the related art, improves the flatness of the backplane 210, facilitates the assembly of the backplane 210 and the light-emitting substrate 220, and reduces the inconvenience caused by the assembly of the light-emitting substrate 220. The risk of fragmentation is reduced, the assembly yield of the light-emitting substrate 220 is improved, the difficulty of separation between the light-emitting substrate 220 and the backplane 210 is reduced, and the assembly efficiency and disassembly efficiency are improved.

FIG. 14 is a schematic diagram of the assembly of the backplane assembly and the first plastic frame in an embodiment of the present disclosure, and FIG. 15 is a schematic diagram of the assembly of the backplane and the light-emitting substrate in an embodiment of the disclosure. Referring to FIG. 4 , FIG. 5 , FIG. 14 and FIG. 15 , in one embodiment, the light emitting substrate 220 includes a base substrate 222 and a plurality of light emitting units 221 disposed on the base substrate 222 . The light emitting unit 221 may be used to provide a light source, and the base substrate 222 may be provided with a plurality of light emitting units 221 arranged in an array. Exemplarily, the light emitting unit 221 may include a light emitting diode, and the light emitting diode is a submillimeter light emitting diode or a micro light emitting diode whose size is below hundreds of microns. The material of the base substrate 222 may be glass, quartz, plastic and the like. The light emitting unit 221 may also include a protective structure, which is arranged on the light emitting side of the light emitting diode, and the material of the protective structure may be transparent silica gel or the like.

Exemplarily, the shapes of the backplane 210 and the light-emitting substrate 220 can be rectangles, rounded rectangles, circles or ellipses, etc. The shapes of the backplane 210 and the light-emitting substrate 220 are not limited here, and can be determined according to actual use requirements. set up. The light-emitting substrate 220 can be pasted on the backplane 210 by pasting the adhesive layer TP. The pasting glue layer TP can be an adhesive strip or glue. A step is formed between the edge of the light-emitting substrate 220 and the edge of the backplane 210. The backplane assembly 200 can The step is limited and fixed to the plastic frame assembly 100 . The distance between the edge of the light-emitting substrate 220 and the edge of the backplane 210 can be as small as possible, so that the distance from the light-emitting substrate 220 to the outer frame of the backlight module can be reduced.

Exemplarily, the backplane 210 is in the shape of a flat plate. Compared with the backplane in the related art, which includes a bottom plate and side panels, the backplane 210 of this solution cancels the side panels, which makes the assembly of the light-emitting substrate 220 more convenient and reduces the number of backplanes 210. The risk of fragmentation caused by mutual assembly with the light-emitting substrate 220. In the related art, the backboard needs to be avoided and adjusted by the rib structure. The flat backboard 210 is used in the flat state, and its flatness and stability are relatively good in the flat state. It will affect the overall thickness of the backplane module.

Referring to FIG. 2 , in an embodiment, the accommodating space S may be rectangular, and the number of the first glue frame 110 and the number of the second glue frame 120 are both one. The first plastic frame 110 and the second plastic frame 120 are the frames of the accommodation area, the first plastic frame 110 may include three frames, the second rubber frame 120 may include one frame, or the first plastic frame 110 and the second plastic frame 120 may each include two bezels. That is, the specific shapes and structures of the first plastic frame 110 and the second plastic frame 120 are not limited here, as long as the two are connected and enclosed to form a closed-loop accommodation area.

In one embodiment, the shape of the plastic frame assembly 100 is quadrilateral, and the plastic frame assembly 100 includes two first plastic frames 110 and two second plastic frames 120, the two first plastic frames 110 are arranged opposite to each other, and the two second The plastic frames 120 are arranged opposite to each other, and the first plastic frame 110 and the second plastic frame 120 are sequentially connected to form an accommodating section S, and the accommodating section S is quadrilateral. It should be noted that the number of the first glue frame 110 and the second glue frame 120 is not limited to two, the number of the first glue frame 110 and the second glue frame 120 can be set according to needs, for example, the shape of the glue frame assembly It may be hexagonal, so the number of the first glue frame 110 and the number of the second glue frame 120 are three respectively.

In one embodiment, the accommodation space S is a circle, the first plastic frame 110 and the second plastic frame 120 are arc-shaped, and the first plastic frame 110 and the second plastic frame 120 can be equal or unequal in size Arc-shaped, the first plastic frame 110 and the second plastic frame 120 are sequentially connected to form a circular accommodation space S.

In one embodiment, the first limiting structure 111 and the second limiting structure 112 can cooperate to limit the backplane assembly in the accommodation area S, and the structures of the first limiting structure 111 and the second limiting structure 112 can be the same , or the structures of the first limiting structure 111 and the second limiting structure 112 may be different. For example, both the first limiting structure 111 and the second limiting structure 112 can be limiting grooves provided on the side of the plastic frame assembly facing the accommodation section S, and the limiting grooves can control the degree of freedom of the backplane assembly 200 in the up and down direction. restrictions, and can also guide the installation of the backplane assembly 200.

In the related art shown in FIG. 1 , the backlight module 10 includes a plastic frame assembly 100 and a backplane assembly 200. The backplane assembly 200 includes a backplane 210 and a light-emitting substrate 220. The backplane 210 includes a bottom plate and is arranged on at least one edge of the bottom plate and The side plate connected to the bottom plate, the bottom plate and the side plate form a storage space S for accommodating the light-emitting substrate 220, the distance from the light-emitting substrate 220 to the outer frame of the backlight module is a, and the distance a includes the thickness of the side plate of the back plate 210, the glue The thickness of the frame assembly 200 and the corresponding gap size. When the backlight module 10 is assembled with the display panel, the distance between the display area of the display panel and the center of the outermost light-emitting unit of the light-emitting substrate 220 needs to ensure a certain design value to ensure that the peripheral position is evenly bright and dark, and the distance closest to the edge of the light-emitting substrate The distance between the light emitting unit 221 and the edge of the light emitting substrate 220 will affect the wiring design of the light emitting substrate 220 . In the related technical solutions, due to the arrangement of the side plates of the back plate 210 , the frame of the backlight module 10 is thicker, and it affects the wiring design of the light-emitting substrate 220 . However, in the technical solution of the present disclosure, the backboard 210 with a plate-like structure is used, and the first limiting structure 111 and the second limiting structure 121 are limited in the accommodation area S, thereby realizing the connection between the backboard 210 and the plastic frame assembly 100 fixed. As shown in Figure 4, the distance between the light-emitting substrate 220 and the outer frame of the backlight module is b, and the distance b only includes the thickness of the plastic frame assembly 200 and the corresponding gap size, which is reduced by 1.0mm-1.5mm compared to the backlight module of the related art. The side panel thickness value of the back panel 210 in mm. The distance between the display area AA of the display panel and the center of the outermost light-emitting unit 221 of the light-emitting substrate 220 is c, and the distance between the center of the outermost light-emitting unit 221 of the light-emitting substrate 220 and the outer edge of the light-emitting substrate 220 is d. The light-emitting substrate 220 of this solution Compared with the related art, the distance d between the center of the outermost light-emitting unit 221 and the outer edge of the light-emitting substrate 220 is larger, so that there is a wider reserved space for wiring, which is beneficial to improve the stability of wiring.

In the related art shown in FIG. 1 , the structure of the backboard 210 needs to be avoided and adjusted by the rib structure, but the technical solution of the present disclosure cancels the bending structure of the backboard 210 , and the flatness of the backboard 210 in the flat state The strength and stability are relatively good, and there is no need to provide structural assistance such as reinforcing ribs, so that the technical solution of the present disclosure is not affected in terms of thickness while ensuring a narrow frame, and can be consistent with the thickness of the backlight module of the related technology , and can be even thinner.

The technical solution of the present disclosure provides a backlight module, which reduces the distance between the light-emitting substrate 220 and the outer frame of the backlight module, increases the screen ratio, increases the available space for the layout of the light-emitting substrate 220, and makes full use of the light-emitting substrate. The effective area of 220 increases the scope of the wiring area, improves the stability of the wiring, and improves the experience.

FIG. 10 is a schematic perspective view of a partial structure of the first plastic frame in an embodiment of the present disclosure, and FIG. 11 is a perspective schematic view of a partial structure of a second plastic frame in an embodiment of the present disclosure. Referring to Fig. 4, Fig. 5, Fig. 10 and Fig. 11, in one embodiment, the first plastic frame 110 is provided with a first protruding portion 112 and a second protruding portion 113 on one side facing the accommodating section, the first protruding portion The protruding portion 112 and the second protruding portion 113 are arranged at intervals. A first groove 114 is formed between the first protrusion 112 and the second protrusion 113 , and the first limiting structure 111 includes the first groove 114 . An edge portion of the back plate 210 facing the first plastic frame 110 is located in the first groove 114 and supported on the first protruding portion 112 . Exemplarily, the second protruding portion 113 can be parallel to the first protruding portion 112, so that a first groove 114 with a uniform height can be formed between the first protruding portion 112 and the second protruding portion 113, which is convenient for backing Board 210 is installed. The distance between the first protruding portion 112 and the second protruding portion 113 can be greater than or equal to the thickness of the back plate 210, so that the back plate 210 can be placed along the opening end of the first plastic frame 110, that is, the second plastic frame 120 The connection end of the backplane assembly 200 is inserted into the first groove 114 to realize the installation of the backplane assembly 200 . For the first protruding part 112 and the second protruding part 113 of this structure, when the backplane assembly 200 is assembled, only the edge of the backplane assembly 200 needs to be aligned with the first groove 114, and then pushed along the corresponding direction. The backplane assembly 200 can fix the backplane assembly 200 and the first plastic frame 110 in a limited position without requiring other auxiliary installation tools, which improves the assembly efficiency.

Exemplarily, the first protruding portion 112 and the second protruding portion 113 may be protrusions of any cross-sectional shape, as long as the first protruding portion 112 and the second protruding portion 113 can define the vertical direction of the back plate 210 degrees of freedom. For example, the first protruding portion 112 and the second protruding portion 113 may be protrusions with a square, trapezoidal or triangular cross-section.

Exemplarily, the first protruding portion 112 and the second protruding portion 113 may be integrally formed with the first plastic frame 110 , such as by injection molding, the first protruding portion 112 and the second protruding portion 113 are formed on the second protruding portion 110 The material of the first plastic frame 110 may be the same, or may be an integral structure formed by secondary injection molding. In this case, the material of the first protruding portion 112 and the second protruding portion 113 is different from that of the first plastic frame 110 . Alternatively, the first protruding portion 112 and the second protruding portion 113 can also be provided separately from the first plastic frame 110, and the first protruding portion 112 and the second protruding portion 113 can be glued or fastened Arranged on the side wall of the first plastic frame 110, the materials of the first protruding portion 112 and the second protruding portion 113 can be the same as or different from the first plastic frame 110, and the specific material can be selected according to usage requirements.

In one embodiment, the first protruding portion 112 and the second protruding portion 113 may be in the shape of a continuous strip on the side wall of the first plastic frame 110 facing the accommodation section S, that is, the first protruding portion 112 and the second protruding portion 113 are continuously extended along the length direction of the frame of the accommodation section S.

In one embodiment, the first protruding portion 112 and the second protruding portion 113 can also be a plurality of protruding units provided on the side wall of the first plastic frame 110 facing the accommodation section S, and the multiple protruding parts The starting cells are uniformly distributed on the side wall of the first plastic frame 110 facing the accommodating section S side.

Referring to Fig. 4, in one embodiment, the protruding size of the second protruding portion 113 relative to the first plastic frame 110 is smaller than the protruding size of the first protruding portion 112 relative to the first plastic frame 110, so that the second The protruding portion 113 can work together with the first protruding portion 112 to limit the edge of the back plate 210 , while the position of the light-emitting substrate 220 in the accommodation section S is at the same height as the second protruding portion 113 . The reduced size of the second protrusion 113 can further shorten the distance between the edge of the light-emitting substrate 220 and the outer frame of the backlight module, thereby increasing the screen ratio and increasing the space available for the layout of the light-emitting substrate 220 .

As shown in FIG. 14 , the protrusion size of the second protrusion 113 relative to the first plastic frame 110 is smaller than the protrusion size of the first protrusion 112 relative to the first rubber frame 110 , and the back plate 210 passes through the first groove. 114 is limited and fixed and supported by the first protruding part 112, the light-emitting substrate 220 is located on the peripheral side of the second protruding part 113, and there is a gap between the second protruding part 113 and the outer edge of the light-emitting substrate 220, the second protruding part The out portion 113 can also be used to limit and support the optical film layer.

Referring to Figure 5 and Figure 11, in one embodiment, the side of the second plastic frame 120 facing away from the accommodation area S is provided with a bent structure 122 protruding from the edge of the back plate 210, the bent structure 122 is connected to the second plastic frame A second groove 123 facing the accommodating section S is formed between the edges of 120 , and the second limiting structure 121 includes the second groove 123 . For example, as shown in FIG. 10 , a second groove 123 facing the accommodating section S is formed between the bent structure 122 and the lower edge of the second plastic frame 120 . The bending structure 122 includes a first part and a second part. As shown in FIG. The ends of the first part are connected and extend toward the accommodation space S, so that the first part, the bottom edge of the second plastic frame 120 and the second part form the second groove 123 towards the accommodation space S, and the first part can define the back plate 210 In the horizontal degree of freedom, the second part is buckled on the side of the backplane 210 away from the light-emitting substrate. With such a structure, the first limiting structure 111 and the second limiting structure 121 can respectively limit the backplane assembly from the X, Y, and Z directions, further improving the structural stability of the backlight module.

It should be noted that the bent structure 122 may be a continuous shape provided on the second rubber frame 120 , that is, the bent structure 122 forms a continuous second groove 123 along the length direction of the second rubber frame 120 . Alternatively, the bending structure 122 can also be a plurality of structures arranged on the second plastic frame 120 and evenly spaced, and each bending structure 122 forms the second limiting structure 121 as a whole.

Exemplarily, the bottom end of the second plastic frame 120 is supported on the back plate 210, the side wall of the second plastic frame 120 facing away from the accommodation space S may coincide with the edge of the back plate 210, and the second plastic frame 120 The sidewall on the side away from the accommodation section S extends downwards and protrudes to form the second limiting structure 121 to limit the back plate 210 . The bending structure 122 and the second plastic frame 120 in the embodiment of the present disclosure form a second groove 123 facing the accommodation section S, which can improve the stability of the overall structure of the module.

Referring to FIG. 5 and FIG. 11 , in one embodiment, at least one first positioning block 124 is provided on the side of the second plastic frame 120 facing the accommodation space S, and the first positioning block 124 protrudes to the edge of the second plastic frame 120 A slot 211 matching the first positioning block 124 is provided on the back plate 210 close to the second plastic frame 120 , and the first positioning block 124 is inserted into the slot 211 .

Exemplarily, the second plastic frame 120 is provided with a plurality of first positioning blocks 124 on one side facing the accommodation space S, and the plurality of first positioning blocks 124 are evenly distributed along the length direction of the second plastic frame 120 , and the slots 211 It can be set through the backplane 210, one side of the slot 211 runs through one side of the backplane 210, the slots 211 are evenly spaced along the length direction of the backplane 210, and the first positioning block 124 protrudes to the side of the second plastic frame 120. The size of the edge portion is less than or equal to the depth of the slot 211 , and the first positioning block 124 is snapped into the slot 211 to fix and lock the backboard 210 . In this manner, the stability of the backplane 210 in a limited position can be ensured.

Referring to FIG. 5 and FIG. 14 , in one embodiment, there is a first gap between the bending edge of the bending structure 122 and the first positioning block 124 , the size of the first gap is greater than the thickness of the back plate 210 , and it is located at the second An elastic pad 230 is disposed on the back plate 210 in the groove 123 . By arranging the elastic spacer 230 at the bottom of the back plate 210 and the second plastic frame 120, the back plate 210 can be limited and fixed by the elastic spacer 230; It plays a certain buffering role to avoid problems such as damage to the mounting edge of the backplane 210; among them, the elastic spacer 230 exerts an upward elastic support force on the backplane 210, and cooperates with the second rubber frame to clamp the backplane 210 on the Between the elastic pad and the bending structure 122, the backboard 210 itself is prevented from loosening.

It should be noted that the elastic spacer 230 may be a continuous strip structure, and the elastic spacer 230 may be attached to the back plate 210 as a whole through double-sided adhesive tape. The size of the elastic pad 230 can be set according to the first gap between the bending structure 122 and the first positioning block 124 . Or, the elastic spacer 230 can also be a plurality of elastic spacer units, and the plurality of elastic spacer units are evenly distributed along the edge of the backboard 210, and the elastic spacer units can be independently installed on the backboard, and After the second rubber frame is installed, it corresponds to the second groove 123 .

4 and 5, in one embodiment, the backlight module 10 further includes an optical film layer 300, the end of the first plastic frame 110 away from the backplane 210 and/or the end of the second plastic frame 120 away from the backplane The end portion of 210 is provided with a third protruding portion 130 protruding toward the accommodation space S, and the optical film layer 300 is defined between the light-emitting substrate 220 and the third protruding portion 130 . The third protruding part 130 can be integrally formed with the first plastic frame 110, or the third protruding part 130 can be set separately from the first plastic frame 110, and the third protruding part 130 and the first plastic frame 110 face the accommodation area A step portion is formed on one side of S to limit the optical film layer 300 , which can prevent the optical film layer 300 from moving.

Exemplarily, the third protruding portion 130 may be disposed on the end of the first plastic frame 110 away from the back plate 210 , or the third protruding portion 130 may be disposed only on the end of the second plastic frame 120 far from the back plate 210 portion, or the third protruding portion 130 may be disposed at the end of the first plastic frame 110 away from the back plate 210 and at the end of the second plastic frame 120 away from the back plate 210 .

Exemplarily, the optical film layer 300 may include a diffuser plate, a light-enhancing film layer, a prism film layer, a uniform light film layer, a transflective film layer, etc., the diffuser plate may be used to evenly distribute the light emitted by the light-emitting substrate, and the light-enhancing film layer may be It is used to refract the light emitted from the diffuser plate, improve the viewing angle distribution of light, concentrate the light on the front viewing angle, increase the luminous flux at the front viewing angle, and improve the light utilization rate. The prism film layer may include a lower prism sheet and an upper prism sheet. The number of diffusion plates, the number of light-enhancing film layers, and the number of prism film layers can all be set according to actual use requirements. The diffuser plate, the enhancement film, the prism film, the uniform light film, and the transflective film can be respectively inserted into the accommodation space S formed by the plastic frame assembly 100 in sequence, and stacked on the light-emitting substrate 220 in sequence. It should be noted that, the embodiment of the present disclosure exemplarily shows a specific structure of the optical film layer, which is not limited here, and the optical film layer may also include other optical film layer structures.

FIG. 6 is a three-dimensional schematic diagram of a partial structure of a backlight module in an embodiment of the present disclosure; FIG. 7 is a perspective schematic diagram of a partial structure of a backlight module in an embodiment of the present disclosure; FIG. 9 is an enlarged perspective view of a locking structure in an embodiment of the present disclosure. 4, FIG. 6, FIG. 7 and FIG. 8, in one embodiment, the third protrusion 130 is provided with a positioning groove 131, the positioning groove 131 is used to install the second positioning block 132, the second positioning block 132 is used For positioning the optical film layer 300 , the positioning groove 131 is extended along the length direction of the frame of the receiving section S. As shown in FIG. The positioning groove 131 vertically runs through the third protrusion 130 and communicates with the accommodation area S. The second positioning block 132 matches the size of the positioning groove 131. The second positioning block 132 is inserted into the positioning groove 131 and extends to the optical film layer 300 and contact with the optical film layer 300 to position the optical film layer 300 . An end of the second positioning block 132 facing away from the back plate 210 is located in the positioning groove 131 or flush with the top of the positioning groove 131 .

Referring to FIG. 6 , FIG. 8 , FIG. 9 , FIG. 10 , FIG. 11 and FIG. 14 , in one embodiment, the backlight module includes a locking structure 400 , and the locking structure 400 is arranged on the first plastic frame 110 and the second plastic frame 120 of the connection. The locking structure 400 includes a locking portion 410, a first locking member 420 arranged on the first rubber frame 110 and a second locking member 430 arranged on the second rubber frame 120, when the first rubber frame 110 and the second rubber frame When 120 is connected to form a closed-loop accommodation section S, the locking portion 410 locks and combines the first locking member 420 and the second locking member 430 .

Referring to FIG. 9 , the connecting end of the first plastic frame 110 is provided with a first bent portion 115 , and the first bent portion 115 forms a first notch 117 on the side facing the accommodation section S. The first plastic frame 110 and the first bent portion The end surface of the part 115 facing away from the back plate 210 is provided with a first engaging groove 116, and the connection end of the second plastic frame 120 is provided with a protruding part 125, the protruding part 125 is received at the first notch 117, and the protruding part 125 is away from the back plate The end surface on one side of 210 is provided with a second locking groove 126, and the locking portion 410 is engaged in the first locking groove 116 and the second locking groove 126. The first locking member 420 includes the first bending portion 115 and the second locking member 420. A locking slot 116 , the second locking member 430 includes the protruding portion 125 and the second locking slot 126 . With such a structure, the reliability after the first plastic frame 110 and the second plastic frame 120 are mated and connected is better.

9, FIG. 10 and FIG. 11, in one embodiment, the connecting end of the first plastic frame 110 is provided with a first bent portion 115, and the first bent portion 115 includes The first plate 1151 and the second plate 1152 located at the bottom of the first plate 1151 and protruding towards the side of the accommodation space S, the edge part of the back plate 210 is overlapped on the second plate 1152, and the first plastic frame 110 and the second plate 1152 are overlapped. The top surface of a bent portion 115 is provided with a first locking groove 116 , and a first gap is formed between the connecting ends of the first plate 1151 , the second plate 1152 and the first plastic frame 110 . The connecting end of the second plastic frame 120 is provided with a protruding portion 125 protruding toward one side of the accommodating section S, and the protruding portion 125 can be accommodated in the first notch 117 . The protruding part 125 includes a third block 1251 arranged along the height direction of the second plastic frame 120 and a fourth block 1252 located on the top of the third block 1251 protruding toward the side of the accommodation area. The bottom surface of the third block 1251 overlaps the back plate 210 , the top surfaces of the third block 1251 and the fourth block 1252 are provided with the second engaging groove 126 . The locking portion 410 is engaged in the first locking groove 116 and the second locking groove 126 to lock the first plastic frame 110 and the second plastic frame 120 .

The locking part 410 can be a square clamp, a circular clamp or a C-shaped clamp or other structures. The structure of the locking portion 410 can be designed according to the specific structures of the first locking slot and the second locking slot, which is not limited here. Referring to FIG. 3 , in the embodiment of the present disclosure, the locking part 410 adopts a square clip.

In the backlight module of the embodiment of the present disclosure, the locking part 410 is used to lock and combine the first locking member 420 and the second locking member 430 to facilitate assembly and disassembly.

Referring to FIG. 7 , in one embodiment, the backlight module 10 further includes an adhesive layer 500 , and the adhesive layer 500 is disposed on the end surface of the first adhesive frame 110 away from the backplane 210 . The adhesive layer 500 can also be disposed on the end surface of the second adhesive frame 120 away from the back plate 210 . Exemplarily, that is, the adhesive layer 500 is distributed along the direction of the top surfaces of the first glue frame 110 and the second glue frame 120 . For example, when the plastic frame assembly 100 is a square frame, the adhesive layer 500 is distributed along the top surfaces of the four frames of the plastic frame assembly 100 . The adhesive layer 500 can cover the second positioning block 132 and the locking part 410 . In this manner, the second positioning block 132 and the locking portion 410 can be further fixed, and ready for assembly of the display panel.

Exemplarily, the pasting adhesive layer 500 may be a foam adhesive layer.

FIG. 12 is a schematic diagram of a backplane and a locked backplane in an embodiment of the present disclosure, and FIG. 13 is a schematic diagram of installation of a backplane and a circuit board in an embodiment of the present disclosure. 4, FIG. 5, FIG. 12 and FIG. 13, in one embodiment, the backplane 210 includes a first surface 212 and a second surface 213, the light-emitting substrate 220 is disposed on the first surface 212, and the second surface 213 is disposed with The locking backboard 240 is provided with a protruding part 241 , and the protruding part 241 is used for installing the circuit board P. The backlight module 10 further includes a clip 600 , which is used for locking the backplane 24 and the circuit board P on the second surface 213 of the backplane 210 .

Referring to Fig. 5, Fig. 7, Fig. 13, exemplarily, the clamp 600 includes a first limiting plate 610, a connecting plate 620 and a second limiting plate 630, the first limiting plate 610 and the second limiting plate 620 pass through The connection plate 620 is connected to form a card slot facing the accommodation section S. After the circuit board P is placed on the raised part 241, an external force can be used to lock the card between the first limiting plate 601 and the second limiting plate 603. The slot is opened, so that the first limiting plate abuts against the circuit board P, and the first limiting plate 610 is pressed on the side of the back plate 210 away from the locked back plate 240, for example, the second limiting plate 630 can be pressed On the light-emitting substrate 220 , the circuit board P and the locking backplane 240 are fixed together on the second surface 213 of the backplane 210 . As shown in FIG. 8 , the second plastic frame 120 is provided with an avoidance groove, and the clamp 600 can protrude to the outside of the second rubber frame 120 through the avoidance groove.

The backplane 210 of the embodiment of the present disclosure has no side panel bending structure, the flatness and stability of the backplane 210 in the flat state are relatively good, the difficulty of assembling the light-emitting substrate is reduced, and structural assistance such as ribs is not required, but due to the Such structures need to be fixed or locked. Therefore, in the embodiment of the present disclosure, an attached and locked backplane 240 is provided on the second surface 213 to assist in installing the circuit board through the locked backplane 240 .

In the related art, the circuit board of the backlight module is generally placed on the rib protrusions of the backplane, and locked and fixed by fasteners such as screws. In the embodiment of the present disclosure, by attaching the locking backboard 240 on the second surface 213 , the thickness of the locking backboard 240 can be 0.5 mm, and the locking backboard is thinner than the protrusion structure of the backboard in the prior art. The circuit board in the embodiment of the present disclosure is disposed on the raised portion 241 mounted on the locking backplane, and the stability and heat dissipation function of the circuit board are not affected. Moreover, the main function of the locking backplane 240 is to fix components such as circuit boards. Its flatness and strength requirements are lower than those of the backplane 210, and the thickness of the locking backplane 240 is 0.5 mm to meet the relevant requirements. Therefore, the overall thickness of the backlight module in the embodiment of the present disclosure is basically the same, and the backlight module 10 can reduce the design width of the side frame of the backlight module on the premise that the thickness, assembly and matching properties are not affected. This allows for a bezel-less design.

In the backlight module of the embodiment of the present disclosure, the second surface 213 of the backplane 210 can be provided with a locking backplane 240 with a protrusion 241 to assist the installation of the circuit board, so that the stability and heat dissipation function can not be affected, and the In the case of affecting the overall thickness of the backlight module, a narrow frame design is realized.

The embodiment of the present disclosure also provides a method for maintaining the backlight module, which is suitable for assembling the backlight module 10 of any embodiment of the present disclosure. The method for assembling the backlight module may include: bonding the light-emitting substrate 220 on one side of the backplane 210 to form the backplane assembly 200 . The backplane assembly 200 is assembled with the first plastic frame 110 , and the edge of the backplane assembly 210 is limited by the first limiting structure 111 . The first plastic frame 110 and the second plastic frame 120 are connected to form a closed-loop accommodation area S, and the backplane assembly 200 is limited in the accommodation area S by the first limiting structure 111 and the second limiting structure 121 .

The technical solution of the embodiment of the present disclosure will be further described below through the assembly process of the backlight module in an embodiment of the present disclosure.

Referring to FIG. 13 and FIG. 15 , glue strips are provided on the first surface of the backplane 210, and the light-emitting substrate 220 is pasted and fixed on the first surface of the backplane 210 by glue strips to form the backplane assembly 200. On the first surface of the backplane 210 The surface 212 corresponds to the position of the second rubber frame 120, and the elastic pad 230 is pasted with adhesive strips, the locking backplane 240 is installed on the second surface 213 of the backplane 210, and the circuit board P is installed on the protrusion of the locking backplane 240 , fasten the locking backplane 240 and the circuit board P on the second surface 212 of the backplane 210 through the clip 600 .

Referring to FIG. 14 , the backplane assembly 200 is inserted into the first groove 114 between the first protruding portion 112 and the second protruding portion 113 of the first plastic frame 110 , and the optical film layer 300 such as a diffuser plate is placed in order inserting on the second protrusion 113 of the first plastic frame 110 , and stacking the optical film layer 300 on the light-emitting substrate 220 .

Referring to Figure 6, assemble the second plastic frame 120 with the first plastic frame 110, match the first locking member 420 with the second locking member 430, assemble the second plastic frame 120 on the back plate 210 to form a closed-loop stress mode, and complete For the positioning of the internal structure, the second limiting structure 121 of the second plastic frame 120 cooperates with the first limiting structure 111 to limit and fix the back plate 210 in the accommodation space S.

Referring to FIG. 8 , insert the locking part 410 into the grooves of the first locking member 420 and the second locking member 430 , insert the second positioning block 117 into the positioning groove 116 , and carry out the positioning of the first plastic frame 110 and the second plastic frame 120 The corners of the ends are locked to ensure the stability of the structure, and the displacement of the optical film layer 300 is limited by the second positioning block 117 .

Referring to Fig. 7, stick the adhesive layer 500 on the top surface of the first plastic frame 110 and the second plastic frame 120, and cover the adhesive layer 500 on the locking part 410 and the second positioning block 117 to assist Fixing and pasting the adhesive layer 500 can also assist the assembly of the display panel.

The method for assembling the backlight module of the embodiment of the present disclosure reduces the difficulty of assembling the light-emitting substrate 220 , reduces the risk of fragmentation caused by the assembly of the light-emitting substrate 220 , improves the yield rate, and improves the assembly efficiency and disassembly efficiency.

Based on the inventive concepts of the foregoing embodiments, the embodiments of the present disclosure further provide a display device, the display device including the display module in any embodiment of the present disclosure. The display device can be any product or component with a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and the like.

The backlight module and other components of the display device in the above embodiments can be adopted in various technical solutions known to those skilled in the art now and in the future, and will not be described in detail here.

In the description of this specification, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limitations on the present disclosure.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

In this disclosure, terms such as "installation", "connection", "connection" and "fixation" should be interpreted in a broad sense, for example, it may be a fixed connection or a detachable connection, unless otherwise clearly defined and limited. , or integrated; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two components or the interaction relationship between two components . Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

In the present disclosure, unless otherwise clearly stated and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "below" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the level of the first feature is smaller than that of the second feature.

The above disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. To simplify the disclosure description of the present disclosure, the components and arrangements of specific examples are described above. Of course, they are merely examples, and are not intended to limit the present disclosure. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances, such repetition is for simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed.

The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily think of various changes or replacements within the technical scope of the present disclosure. These should all fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be determined by the protection scope of the claims.

Claims (14)

1. A backlight module, comprising:

the glue frame assembly comprises a first glue frame and a second glue frame, wherein the first glue frame and the second glue frame are sequentially connected to form a closed-loop accommodating section, a first limit structure is arranged on one side of the first glue frame, which faces the accommodating section, and a second limit structure is arranged on one side of the second glue frame, which faces the accommodating section;

The backboard component comprises a backboard and a light-emitting substrate, the backboard is in a flat plate shape, the light-emitting substrate is arranged on the backboard, and the backboard component is limited in the accommodating section through the first limiting structure and the second limiting structure.

2. The backlight module according to claim 1, wherein a first protruding portion and a second protruding portion are disposed on a side of the first adhesive frame facing the accommodating section, the first protruding portion and the second protruding portion are disposed at intervals, a first groove is formed between the first protruding portion and the second protruding portion, the first limiting structure comprises the first groove, and an edge portion of the back plate facing the first adhesive frame is located in the first groove and supported by the first protruding portion.

3. The backlight module according to claim 2, wherein a protruding dimension of the second protruding portion with respect to the first adhesive frame is smaller than a protruding dimension of the first protruding portion with respect to the first adhesive frame.

4. The backlight module according to claim 1, wherein a bending structure protruding out of the edge of the back plate is arranged on one side of the second plastic frame away from the accommodating section, a second groove facing the accommodating section is formed between the bending structure and the edge of the second plastic frame, and the second limiting structure comprises the second groove.

5. The backlight module according to claim 4, wherein at least one first positioning block is disposed on a side of the second adhesive frame facing the accommodating section, the first positioning block extends to the edge of the second adhesive frame, a slot adapted to the first positioning block is disposed on a position of the back plate, which is close to the second adhesive frame, and the first positioning block is inserted into the slot.

6. The backlight module according to claim 5, wherein a first gap is formed between the bent edge of the bent structure and the first positioning block, the first gap is larger than the thickness of the back plate, and an elastic cushion block is arranged on the back plate in the second groove.

7. A backlight module according to claim 1, further comprising an optical film layer, wherein an end of the first glue frame remote from the back plate and/or an end of the second glue frame remote from the back plate is provided with a third protrusion protruding towards the accommodation region, the optical film layer being defined between the light emitting substrate and the third protrusion.

8. A backlight module according to claim 7, wherein the third protrusion is provided with a positioning groove, and the second positioning block is inserted into the positioning groove and contacts the optical film layer to position the optical film layer.

9. A backlight module according to any one of claims 1 to 8, comprising a locking structure arranged at the junction of the first and second glue frames, the locking structure comprising a locking portion, a first locking member arranged on the first glue frame and a second locking member arranged on the second glue frame, the locking portion locking the first and second locking members when the first and second glue frames are connected to form a closed-loop accommodation space.

10. The backlight module according to claim 9, wherein the connection end of the first adhesive frame is provided with a first bending portion, a first notch is formed on one side of the first bending portion, which faces the accommodating section, a first clamping groove is formed on the end face, which faces away from the back plate, of the first adhesive frame and the first bending portion, a protruding portion is arranged on the connection end of the second adhesive frame, the protruding portion is received at the first notch, a second clamping groove is formed on the end face, which faces away from the back plate, of the protruding portion, the locking portion is clamped in the first clamping groove and the second clamping groove, the first locking member comprises the first bending portion and the first clamping groove, and the second locking member comprises the protruding portion and the second clamping groove.

11. The backlight module according to claim 1, further comprising an adhesive layer disposed on an end surface of the first adhesive frame away from the back plate side and an end surface of the second adhesive frame away from the back plate side.

12. The backlight module according to claim 1, wherein the back plate comprises a first surface and a second surface, the light-emitting substrate is disposed on the first surface, the second surface is provided with a locking back plate, the locking back plate is provided with a protruding portion, and the protruding portion is used for mounting a circuit board;

the backlight module further comprises a clamp, and the clamp is used for clamping the locking backboard and the circuit board on the second surface of the backboard.

13. A method for assembling a backlight module, adapted for assembling the backlight module according to any one of claims 1 to 12, comprising:

bonding the luminous substrate on one side of the backboard to form a backboard assembly;

assembling the backboard component and the first rubber frame, and limiting the edge part of the backboard component through the first limiting structure;

and connecting the first rubber frame and the second rubber frame to form a closed-loop accommodating interval, and limiting the backboard assembly in the accommodating interval through the first limiting structure and the second limiting structure.

14. A display device comprising a backlight module according to any one of claims 1 to 12.

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