Backlight module, assembling method thereof and display device

Abstract

Embodiments of the present disclosure provide a backlight module and an assembling method thereof, and a display device. The backlight module comprises a glue frame assembly and a backboard 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 containing interval. The first glue frame is provided with a first limiting structure on one side facing the containing interval. The second glue frame is provided with a second limiting structure on one side facing the containing interval. The backboard assembly 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. The backboard assembly is limited in the containing interval by the first limiting structure and the second limiting structure. The technical solution 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, increase the layout available space of the light emitting substrate, reduce the light emitting elements on the light emitting substrate, reduce the cost, improve the experience, and improve the assembling efficiency and the disassembling efficiency.

Description

Technical Field

[0001] This disclosure relates to the field of display device technology, and in particular to a backlight module and its assembly method, and a display device. Background Technology

[0002] In related technologies, display modules include structures such as display panels and backlight modules. Backlight modules typically employ a backplate structure and a bezel structure. However, the bezel and backplate structures in these display modules increase the width of the backlight module's side bezels, hindering the trend towards narrow bezels in display devices and also presenting assembly difficulties. Summary of the Invention

[0003] This disclosure provides a backlight module and its assembly method, as well as a display device, to solve or alleviate one or more technical problems in the prior art.

[0004] As a first aspect of the present disclosure, the present disclosure provides a backlight module, including a frame assembly and a backplate assembly. The frame assembly includes a first frame and a second frame, which are sequentially connected to form a closed-loop receiving area. A first limiting structure is provided on the side of the first frame facing the receiving area, and a second limiting structure is provided on the side of the second frame facing the receiving area. The backplate assembly includes a backplate and a light-emitting substrate. The backplate is flat, and the light-emitting substrate is disposed on the backplate. The backplate assembly is limited within the receiving area by the first limiting structure and the second limiting structure.

[0005] In some possible implementations, the first frame has a first protrusion and a second protrusion on the side facing the receiving area, the first protrusion and the second protrusion are spaced apart, a first groove is formed between the first protrusion and the second protrusion, the first limiting structure includes the first groove, and the edge of the back plate facing the first frame is located in the first groove and supported by the first protrusion.

[0006] In some possible implementations, the protrusion dimension of the second protrusion relative to the first frame is smaller than the protrusion dimension of the first protrusion relative to the first frame.

[0007] In some possible implementations, the side of the second frame away from the receiving area is provided with a bent structure protruding from the edge of the back plate, and a second groove facing the receiving area is formed between the bent structure and the edge of the second frame, and the second limiting structure includes the second groove.

[0008] In some possible implementations, at least one first positioning block is provided on the side of the second frame facing the receiving area. The first positioning block extends to the edge of the second frame, and a slot adapted to the first positioning block is provided on the back plate near the second frame. The first positioning block is inserted into the slot.

[0009] In some possible embodiments, the bending edge of the bending structure has a first gap with the first positioning block, the first gap has a size greater than a thickness of the back plate, and the back plate located in the second groove is provided with an elastic pad.

[0010] In some possible embodiments, the backlight module further comprises an optical film layer, an end of the first glue frame away from the back plate and / or an end of the second glue frame away from the back plate is provided with a third protruding part protruding towards the accommodation area, and the optical film layer is defined between the light-emitting substrate and the third protruding part.

[0011] In some possible embodiments, the third protruding part is provided with a positioning groove, the second positioning block is inserted into the positioning groove and in contact with the optical film layer to position the optical film layer.

[0012] In some possible embodiments, the backlight module comprises a locking structure arranged at a connection between the first glue frame and the second glue frame, the locking structure comprises a locking part, a first locking member arranged on the first glue frame, and a second locking member arranged on the second glue frame, and when the first glue frame and the second glue frame are connected to form the closed-loop accommodation area, the locking part locks and combines the first locking member and the second locking member.

[0013] In some possible embodiments, the connection end of the first glue frame is provided with a first bending part, the first bending part forms a first notch towards one side of the accommodation area, the first glue frame is provided with a first clamping groove at an end face away from the back plate side of the first bending part, the connection end of the second glue frame is provided with a protruding part, the protruding part is received at the first notch, an end face away from the back plate side of the protruding part is provided with a second clamping groove, the locking part is clamped in the first clamping groove and the second clamping groove, the first locking member comprises the first bending part and the first clamping groove, and the second locking member comprises the protruding part and the second clamping groove.

[0014] In some possible embodiments, the backlight module further comprises a pasting adhesive layer arranged at an end face away from the back plate side of the first glue frame and an end face away from the back plate side of the second glue frame.

[0015] In some possible embodiments, the back plate comprises a first surface and a second surface, the light-emitting substrate is arranged on the first surface, and the second surface is provided with a locking back plate, the locking back plate is provided with a protruding part for mounting a circuit board.

[0016] The backlight module further comprises a clamp for clamping the locking back plate and the circuit board on the second surface of the back plate.

[0017] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide an assembling method of a backlight module, which is suitable for assembling the backlight module of the first aspect, and the method comprises:

[0018] The light-emitting substrate is bonded to one side of the backboard to form a backboard assembly;

[0019] The backboard assembly is assembled with the first rubber frame, and the edge portion of the backboard assembly is limited by the first limiting structure;

[0020] The first rubber frame and the second rubber frame are connected to form a closed loop containing interval, and the backboard assembly is limited in the containing interval by the first limiting structure and the second limiting structure.

[0021] As a third aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a display device comprising the display module of the first aspect.

[0022] The technical scheme of the embodiments of the present disclosure can shorten the distance between the light-emitting substrate and the outer frame of the backlight module, increase the screen ratio, increase the layout available space of the light-emitting substrate, reduce the light-emitting elements on the light-emitting substrate, reduce the cost, improve the experience, and improve the assembly efficiency and disassembly efficiency.

[0023] The above summary is only for the purpose of the description and is not intended to limit 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 to those skilled in the art by reference to the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0024] In the drawings, like reference numerals refer to same or similar functionalities throughout the several views. The drawings are not necessarily to scale. It is to be understood that the drawings only depict several embodiments in accordance with the present disclosure and should not be considered limiting.

[0025] Figure 1 A backlight module structure schematic diagram in the related art;

[0026] Figure 2 A backlight module overall structure schematic diagram in an embodiment of the present disclosure;

[0027] Figure 3 A backlight module partial structure top view in an embodiment of the present disclosure;

[0028] Figure 4 A B-B sectional view of Figure 3 ;

[0029] Figure 5 A C-C sectional view of Figure 3 ;

[0030] Figure 6 A backlight module partial structure perspective schematic diagram in an embodiment of the present disclosureFigure 1 ;

[0031] Figure 7 Part structure of backlight module in an embodiment of the present disclosure Figure 2 ;

[0032] Figure 8 Part structure of backlight module in an embodiment of the present disclosure Figure 3 ;

[0033] Figure 9 Enlarged schematic view of locking structure in an embodiment of the present disclosure

[0034] Figure 10 Part structure of first glue frame in an embodiment of the present disclosure

[0035] Figure 11 Part structure of second glue frame in an embodiment of the present disclosure

[0036] Figure 12 Backplate and locking backplate in an embodiment of the present disclosure

[0037] Figure 13 Backplate and circuit board in an embodiment of the present disclosure

[0038] Figure 14 Backplate assembly and first glue frame assembly in an embodiment of the present disclosure

[0039] Figure 15 Backplate and light-emitting substrate assembly in an embodiment of the present disclosure

[0040] Explanation of reference signs:

[0041] 10, backlight module

[0042] 100, glue frame assembly; 200, backplate assembly; 300, optical film layer; 400, locking structure; 500, adhesive layer; 600, clamp

[0043] 110, first glue frame; 120, second glue frame; 130, third protruding part

[0044] 111, first limiting structure; 112, first protruding part; 113, second protruding part; 114, first recess; 115, first bent part; 116, first clamping groove; 117, first notch; 1151, first plate; 1152, second plate

[0045] 121. Second limiting structure; 122. Bending structure; 123. Second groove; 124. First positioning block; 125. Protrusion; 126. Second locking groove; 1251. Third plate; 1252. Fourth plate;

[0046] 131. Positioning groove; 132. Second positioning block;

[0047] 210. Backplate; 220. Light-emitting substrate; 230. Elastic pad; 240. Locking backplate;

[0048] 211. Grooving; 212. First surface; 213. Second surface;

[0049] 221. Light-emitting unit; 222. Substrate;

[0050] 241. Protrusion;

[0051] 410. Locking part; 420. First locking member; 430. Second locking member;

[0052] 610. First limiting plate; 620. Connecting plate; 630. Second limiting plate. Detailed Implementation

[0053] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure. Therefore, the drawings and description are to be considered exemplary in nature and not restrictive.

[0054] Figure 1 This is a schematic diagram of the backlight module structure in related technologies. For example... Figure 1 As shown, the backlight module 10 includes a frame assembly 100 and a backplate assembly 200. The backplate assembly 200 is generally a side-bent design and can be used for positioning the optical film layer and engaging the frame assembly 100. The backplate assembly 200 may include a backplate 210 and a light-emitting substrate 220. The backplate 210 may include a base plate and side plates that surround and connect to at least one edge of the base plate. The base plate and side plates form a receiving space S for accommodating the light-emitting substrate 220. The side plates and the frame assembly 100 are engaged and fixed. After being positioned according to the backplate 210, the light-emitting substrate 220 is adhered to the base plate of the backplate 210. The top surface of the frame assembly 100 is provided with an adhesive layer 500, which may be a foam adhesive layer. Figure 1As shown, the distance from the light-emitting substrate 220 to the outer frame of the backlight module is 'a', which includes the thickness of the side plate of the backplate 210, the thickness of the frame assembly 200, and the corresponding gap dimensions. In related technologies, the bending design of the backplate 210 makes the assembly of the light-emitting substrate 220 and the backplate 210 inconvenient, and also hinders the achievement of a narrow bezel in the display device.

[0055] To address the problems of achieving narrow bezels and inconvenient assembly in related technologies, this disclosure provides a backlight module. The technical solution of this disclosure is described in detail below through embodiments.

[0056] Figure 2 This is a schematic diagram of the overall structure of a backlight module provided in one embodiment of the present disclosure. Figure 3 This is a top view of a portion of the backlight module structure in one embodiment of this disclosure. Figure 4 for Figure 3 BB section sectional view, Figure 5 for Figure 3 A cross-sectional view of the CC section. For example... Figure 2 to Figure 5 As shown, this embodiment of the present disclosure provides a backlight module 10, which may include a frame assembly 100 and a backplate assembly 200. The frame assembly 100 may include a first frame 110 and a second frame 120, which are sequentially connected to form a closed-loop receiving area S.

[0057] The first frame 110 has a first limiting structure 111 on the side facing the receiving area S, and the second frame 120 has a second limiting structure 121 on the side facing the receiving area S. The back panel assembly 200 includes a back panel 210 and a light-emitting substrate 220. The back panel 210 is flat, and the light-emitting substrate 220 is disposed on one side of the back panel 210. For example, the light-emitting substrate 220 can be attached to one side of the back panel 210 with adhesive or adhesive strips. The back panel assembly 200 is confined within the receiving area S by the first limiting structure 111 and the second limiting structure 121.

[0058] It should be noted that the size and shape of the receiving area S are matched with the back panel assembly 200. For example, the cross-sectional shape of the receiving area S can be rectangular, circular, or elliptical. The size and shape of the receiving area S are not limited here and can be set according to actual usage requirements.

[0059] The frame assembly 100 is a split design. The frame assembly 100 is connected by a first frame 110 and a second frame 120. The number of the first frame 110 and the second frame 120 can be one or more. The first frame 110 and the second frame 120 are connected and assembled in sequence to limit the back panel assembly 200 within the accommodating range S.

[0060] 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 backboard assembly 200, and after the first glue frame 110 and the second glue frame 120 are matched, the backboard assembly 200 is limited in the accommodation interval S through the cooperation of the first limiting structure 111 and the second limiting structure 121. In an embodiment, the first limiting structure 111 can be used to limit the degree of freedom of the backboard assembly 200 in the vertical direction and / or the horizontal direction, and the second limiting structure 121 can be used to limit the degree of freedom of the backboard assembly 200 in the vertical direction and / or the horizontal direction. Through the cooperation of the first limiting structure 111 and the second limiting structure 121, the backboard assembly 200 is limited in the accommodation interval S.

[0061] The backlight module of the embodiment of the present disclosure, the first glue frame 110 and the second glue frame 120 are sequentially connected to form a closed-loop accommodation interval S, the first glue frame 110 is provided with a first limiting structure 111 on one side facing the accommodation interval S, and the second glue frame 120 is provided with a second limiting structure 121 on one side facing the accommodation interval S. The flat backboard 210 and the light-emitting substrate 220 are assembled to form a backboard assembly 200. When the backboard assembly 200 is assembled, part of the edges of the backboard assembly 200 can be first fixed by the first limiting structure 111, and then the second glue frame 120 and the first glue frame 110 are connected, so that the second limiting structure 121 limits the remaining edges of the backboard assembly 200, that is, the backboard assembly 200 can be limited in the accommodation interval S by the first limiting structure 111 and the second limiting structure 121.

[0062] Compared with the backlight module of the related art, the backlight module of the embodiment of the present disclosure adopts the flat backboard 210, and the backboard 210 no longer has a side plate, so that the distance b between the light-emitting substrate 220 and the outer frame of the backlight module no longer includes the thickness of the backboard side plate. In this way, the distance b between the light-emitting substrate 220 and the outer frame of the backlight module is shortened, the screen ratio is expanded, and the layout available space of the light-emitting substrate 220 is increased. In addition, compared with the assembly method of the backlight module of the related art, since the flatness of the backboard 210 is improved, the assembly of the backboard 210 and the light-emitting substrate 220 is facilitated, the risk of chipping caused by the assembly of the light-emitting substrate 220 is reduced, the assembly yield of the light-emitting substrate 220 is improved, the separation difficulty between the light-emitting substrate 220 and the backboard 210 is reduced, and the assembly efficiency and the disassembly efficiency are improved.

[0063] Figure 14 FIG. 1 is an assembly diagram of a backboard assembly and a first glue frame in an embodiment of the present disclosure, Figure 15 FIG. 2 is an assembly diagram of a backboard and a light-emitting substrate in an embodiment of the present disclosure. Referring to Figure 4 、 Figure 5 、 Figure 14 and Figure 15In an embodiment, the light-emitting substrate 220 includes a substrate 222 and a plurality of light-emitting units 221 disposed on the substrate 222. The light-emitting units 221 can be used to provide light sources, and the substrate 222 can be provided with a plurality of light-emitting units 221 arranged in an array. Exemplarily, the light-emitting units 221 can include light-emitting diodes, which are sub-millimeter light-emitting diodes or micro light-emitting diodes with a size of less than hundreds of microns. The substrate 222 can be made of glass, quartz, plastic, or the like. The light-emitting units 221 can further include a protective structure disposed on the light-emitting side of the light-emitting diode, and the protective structure can be made of transparent silicone or the like.

[0064] Exemplarily, the back plate 210 and the light-emitting substrate 220 can each have a rectangular, rounded rectangular, circular, or elliptical shape, and the shapes of the back plate 210 and the light-emitting substrate 220 are not limited herein and can be set according to actual use requirements. The light-emitting substrate 220 can be attached to the back plate 210 by means of an adhesive layer TP, which can be an adhesive strip or adhesive. The edges of the light-emitting substrate 220 and the edges of the back plate 210 form a stepped portion, and the back plate assembly 200 can be fixed and limited by the stepped portion and the frame assembly 100. The distance between the edges of the light-emitting substrate 220 and the edges of the back plate 210 can be as small as possible, which can reduce the distance between the light-emitting substrate 220 and the outer frame of the backlight module.

[0065] Exemplarily, the back plate 210 is flat, and unlike the back plate of the related art, which includes a bottom plate and a side plate, the back plate 210 of the present solution cancels the side plate, which makes the assembly of the light-emitting substrate 220 more convenient and reduces the risk of breakage caused by the mutual assembly of the back plate 210 and the light-emitting substrate 220. In the related art, the back plate needs to be adjusted for spacing and flatness by means of a reinforcing rib structure. The flat back plate 210 has good flatness and stability in the flat state, and does not need to be assisted by structures such as reinforcing ribs, which will not affect the overall thickness of the back plate module.

[0066] Reference Figure 2 In an embodiment, the accommodation interval S can be rectangular, and the number of the first frame 110 and the second frame 120 can each be one. The first frame 110 and the second frame 120 are the frames of the accommodation interval, the first frame 110 can include three frames, the second frame 120 can include one frame, or the first frame 110 and the second frame 120 can each include two frames. That is, the specific shape and structure of the first frame 110 and the second frame 120 are not limited herein, as long as they are connected to form a closed-loop accommodation interval.

[0067] In one embodiment, the glue frame assembly 100 is quadrangular, the glue frame assembly 100 includes two first glue frames 110 and two second glue frames 120, the two first glue frames 110 are oppositely arranged, the two second glue frames 120 are oppositely arranged, the first glue frame 110 and the second glue frame 120 are sequentially connected to form a containing interval S, and the containing interval S is quadrangular. It should be noted that the number of the first glue frame 110 and the second glue frame 120 is not limited to two, and the number of the first glue frame 110 and the second glue frame 120 can be set as needed, for example, the shape of the glue frame assembly can be hexagonal, and the number of the first glue frame 110 and the second glue frame 120 is 3 respectively.

[0068] In one embodiment, the containing interval S is circular, the shape of the first glue frame 110 and the second glue frame 120 is arc-shaped, the first glue frame 110 and the second glue frame 120 can be circular arcs with equal or unequal sizes, and the first glue frame 110 and the second glue frame 120 are sequentially connected to form a circular containing interval S.

[0069] In one embodiment, the first limiting structure 111 and the second limiting structure 112 can cooperate to limit the back plate assembly in the containing interval S, the structure of the first limiting structure 111 and the second limiting structure 112 can be the same, or the structure of the first limiting structure 111 and the second limiting structure 112 can be different. For example, the first limiting structure 111 and the second limiting structure 112 can be limiting grooves arranged on the side of the glue frame assembly facing the containing interval S, the limiting groove can limit the freedom degree of the back plate assembly 200 in the up-down direction, and can also guide the installation of the back plate assembly 200.

[0070] Figure 1In the related art shown, the backlight module 10 includes a frame assembly 100 and a backboard assembly 200, the backboard assembly 200 includes a backboard 210 and a light-emitting substrate 220, the backboard 210 includes a bottom plate and a side plate arranged at least one edge of the bottom plate and connected with the bottom plate, the bottom plate and the side plate form a containing space S containing the light-emitting substrate 220, the distance from the light-emitting substrate 220 to the outer frame of the backlight module is a, the distance a includes the thickness of the side plate of the backboard 210, 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 from the display area of the display panel to 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 light and dark of the peripheral position are uniform, and the distance between the light-emitting unit 221 closest to the edge of the light-emitting substrate and the edge of the light-emitting substrate 220 will affect the wiring design of the light-emitting substrate 220. In the related art, due to the side plate of the backboard 210, the frame of the backlight module 10 is thick, and the wiring design of the light-emitting substrate 220 is affected. The technical solution of the present disclosure adopts a backboard 210 with a plate structure, which is limited in the containing interval S by the first limiting structure 111 and the second limiting structure 121, thereby realizing the fixation of the backboard 210 and the frame assembly 100. As shown in Figure 4 As shown, the distance from the light-emitting substrate 220 to the outer frame of the backlight module is b, the distance b only includes the thickness of the frame assembly 200 and the corresponding gap size, compared with the backlight module of the related art, the thickness value of the side plate of the backboard 210 is reduced by 1.0mm-1.5mm. The distance from the display area AA of the display panel to the center of the outermost light-emitting unit 221 of the light-emitting substrate 220 is c, 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 distance d 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 in the present solution is larger than that in the related art, which can have a wider reserved space wiring, which is beneficial to improve the wiring stability.

[0071] Figure 1 In the related art shown, the structure of the backboard 210 needs to be avoided and the flatness adjusted by the reinforcing rib structure, and the technical solution of the present disclosure cancels the bending structure of the backboard 210, the flatness and stability of the backboard 210 in the flat state are good, and the reinforcing rib structure is not needed to be arranged for assistance, so that the thickness of the technical solution of the present disclosure is not affected under the condition of ensuring the narrow frame, and the thickness can be consistent with that of the backlight module of the related art, or even thinner.

[0072] The technical scheme 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, expands the screen ratio, increases the layout available space of the light-emitting substrate 220, fully utilizes the effective area of the light-emitting substrate 220, increases the wiring area range, improves the wiring stability, and improves the experience.

[0073] Figure 10 FIG. 2 is a partial structure perspective view of the first glue frame in an embodiment of the present disclosure, Figure 11 FIG. 3 is a partial structure perspective view of the second glue frame in an embodiment of the present disclosure. Referring to Figure 4 、 Figure 5 、 Figure 10 and Figure 11 In an embodiment, the first glue frame 110 is provided with a first protruding portion 112 and a second protruding portion 113 on the side facing the accommodating interval, and the first protruding portion 112 and the second protruding portion 113 are arranged at intervals. A first groove 114 is formed between the first protruding portion 112 and the second protruding portion 113, and the first limiting structure 111 includes the first groove 114. The edge portion of the back plate 210 facing the first glue 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 the first groove 114 between the first protruding portion 112 and the second protruding portion 113 can have a uniform height, facilitating the installation of the back plate 210. 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 inserted into the first groove 114 along the opening end of the first glue frame 110, i.e., the connecting end of the second glue frame 120, to realize the installation of the back plate assembly 200. The first protruding portion 112 and the second protruding portion 113 of this structure only need to align the edge of the back plate assembly 200 with the first groove 114 when the back plate assembly 200 is assembled, and then push the back plate assembly 200 in the corresponding direction, so that the back plate assembly 200 can be fixed and limited with the first glue frame 110, without the need for other auxiliary installation tools, thereby improving the assembly efficiency.

[0074] Exemplarily, the first protruding portion 112 and the second protruding portion 113 can be protrusions of any cross-sectional shape, as long as the first protruding portion 112 and the second protruding portion 113 can limit the vertical direction of freedom of the back plate 210. For example, the first protruding portion 112 and the second protruding portion 113 can be protrusions with a square, trapezoidal or triangular cross-section, etc.

[0075] Exemplarily, the first protruding part 112 and the second protruding part 113 can be integrally formed with the first frame 110, for example, by injection molding, and the material of the first protruding part 112 and the second protruding part 113 can be the same as that of the first frame 110 or can be an integral structure formed by secondary injection molding, in which case the material of the first protruding part 112 and the second protruding part 113 is different from that of the first frame 110. Alternatively, the first protruding part 112 and the second protruding part 113 can also be separately provided from the first frame 110, and the first protruding part 112 and the second protruding part 113 can be provided on the side wall of the first frame 110 by means of gluing or clamping, and the material of the first protruding part 112 and the second protruding part 113 can be the same as or different from that of the first frame 110, and the specific material can be selected according to the use requirement.

[0076] In one embodiment, the first protruding part 112 and the second protruding part 113 can be a continuous long strip provided on the side wall of the side of the first frame 110 facing the accommodation interval S, that is, the first protruding part 112 and the second protruding part 113 are continuously and lengthwise provided along the side frame of the accommodation interval S.

[0077] In one embodiment, the first protruding part 112 and the second protruding part 113 can also be a plurality of protruding units provided on the side wall of the side of the first frame 110 facing the accommodation interval S, and the plurality of protruding units are uniformly distributed and provided on the side wall of the side of the first frame 110 facing the accommodation interval S.

[0078] Referring to Figure 4 In one embodiment, the protruding size of the second protruding part 113 relative to the first frame 110 is smaller than the protruding size of the first protruding part 112 relative to the first frame 110, so that the second protruding part 113 can jointly limit the edge of the back plate 210 together with the first protruding part 112, and the position of the light emitting substrate 220 in the accommodation interval S is at the same height as the second protruding part 113. The reduced protruding size of the second protruding part 113 can further shorten the distance between the edge of the light emitting substrate 220 and the outer frame of the backlight module, thereby expanding the screen ratio and improving the layout available space of the light emitting substrate 220.

[0079] As Figure 14 shown, the protruding size of the second protruding part 113 relative to the first frame 110 is smaller than the protruding size of the first protruding part 112 relative to the first frame 110, the back plate 210 is limited and fixed by the first groove 114 and is supported by the first protruding part 112, the light emitting substrate 220 is located on the circumferential 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, and the second protruding part 113 can also be used to limit and support the optical film layer.

[0080] Referring to Figure 5 andFigure 11 In an embodiment, the second frame 120 is provided with a bending structure 122 protruding from the edge of the back plate 210 on the side facing away from the accommodating section S, and a second groove 123 is formed between the bending structure 122 and the edge of the second frame 120 and faces the accommodating section S, and the second limiting structure 121 comprises the second groove 123. For example, as shown in FIG. 6, the bending structure 122 and the lower edge of the second frame 120 form the second groove 123 facing the accommodating section S. The bending structure 122 comprises a first part and a second part, as shown in FIG. 7, the first part is arranged on the outer side of the second frame 120, the first part extends towards the direction of the back plate 210, i.e. the first part extends downward, and the second part is connected to the end of the first part and extends towards the direction of the accommodating section S, so that the first part, the bottom edge of the second frame 120 and the second part form the second groove 123 facing the accommodating section S, the first part can limit the horizontal degree of freedom of the back plate 210, and the second part is buckled on the side of the back plate 210 facing away from the light-emitting substrate. In this way, the first limiting structure 111 and the second limiting structure 121 can limit the back plate assembly from the X, Y and Z directions respectively, further improving the structural stability of the backlight module. Figure 10 Figure 3

[0081] It should be noted that the bending structure 122 can be a continuous shape arranged on the second frame 120, i.e. the bending structure 122 forms a continuous second groove 123 along the length direction of the second frame 120. Alternatively, the bending structure 122 can also be a plurality of uniformly distributed structures arranged on the second frame 120, and each bending structure 122 forms the second limiting structure 121 as a whole.

[0082] For example, the bottom end of the second frame 120 is supported on the back plate 210, and the side wall on the side of the second frame 120 facing away from the accommodating section S can coincide with the edge of the back plate 210, and the side wall on the side of the second frame 120 facing away from the accommodating section S can be protrudingly arranged downward to form the second limiting structure 121 to limit the back plate 210. The bending structure 122 of the embodiment of the present disclosure and the second frame 120 form the second groove 123 facing the accommodating section S, which can improve the stability of the overall structure of the module.

[0083] Referring to Figure 5 and Figure 11 In an embodiment, at least one first positioning block 124 is arranged on the side of the second frame 120 facing the accommodating section S, the first positioning block 124 protrudes to the edge of the second frame 120, and the position of the back plate 210 close to the second frame 120 is provided with a slot 211 matched with the first positioning block 124, and the first positioning block 124 is inserted into the slot 211.

[0084] ​​Exemplarily, the second glue frame 120 is provided with a plurality of first positioning blocks 124 on a side thereof facing the accommodation section S, the plurality of first positioning blocks 124 are uniformly distributed along a length direction of the second glue frame 120, the slot 211 can be provided through the back plate 210, one side of the slot 211 penetrates one side of the back plate 210, the slot 211 is uniformly distributed along a length direction of the back plate 210, a size of a portion of the first positioning block 124 extending to an edge of the second glue frame 120 is less than or equal to a depth of the slot 211, and the first positioning block 124 is buckled in the slot 211 to fix and lock the back plate 210. In this way, stability of the back plate 210 in position fixing can be ensured.

[0085] With reference to Figure 5 and Figure 14 In an embodiment, the first gap is between the bent edge of the bending structure 122 and the first positioning block 124, a size of the first gap is greater than a thickness of the back plate 210, and the back plate 210 located in the second groove 123 is provided with an elastic pad 230. The back plate 210 is fixed in position by the elastic pad 230 provided on the bottom of the back plate 210 and the second glue frame 120, and the elastic pad 230 has an elastic buffering force to buffer the back plate 210, thereby avoiding damage to an edge of the back plate 210. The elastic pad 230 exerts an upward elastic supporting force on the back plate 210, and cooperates with the second glue frame to clamp the back plate 210 between the elastic pad and the bending structure 122, thereby avoiding loosening of the back plate 210.

[0086] It should be noted that the elastic pad 230 can be a continuous long strip structure, and the elastic pad 230 can be attached to the back plate 210 as a whole by double-sided adhesive tape. A 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. Alternatively, the elastic pad 230 can also be a plurality of elastic pad units, the plurality of elastic pad units are uniformly distributed along an edge of the back plate 210, and the elastic pad units can be respectively and independently installed on the back plate and correspond to the second groove 123 after installation of the second glue frame.

[0087] With reference to Figure 4 and Figure 5In an embodiment, the backlight module 10 further comprises an optical film layer 300, the end of the first frame 110 away from the back plate 210 and / or the end of the second frame 120 away from the back plate 210 is provided with a third protruding part 130 protruding towards the accommodation interval S, and the optical film layer 300 is defined between the light-emitting substrate 220 and the third protruding part 130. The third protruding part 130 can be integrally formed with the first frame 110, or the third protruding part 130 can be separately provided with the first frame 110, and the third protruding part 130 and the side of the first frame 110 facing the accommodation interval S form a stepped part to limit the optical film layer 300, so as to prevent the optical film layer 300 from moving.

[0088] Exemplarily, the third protruding part 130 can be provided at the end of the first frame 110 away from the back plate 210, or the third protruding part 130 can be provided only at the end of the second frame 120 away from the back plate 210, or the third protruding part 130 can be provided at the end of the first frame 110 away from the back plate 210 and at the end of the second frame 120 away from the back plate 210.

[0089] Exemplarily, the optical film layer 300 can comprise a diffusion plate, a light enhancement film layer, a prism film layer, a light uniformization film layer, a transmission-reflection film layer, etc. The diffusion plate can be used to uniformly distribute the light emitted by the light-emitting substrate, the light enhancement film layer can be used to refract the light emitted from the diffusion plate, improve the viewing angle distribution of the light, concentrate the light on the normal viewing angle, improve the luminous flux of the normal viewing angle, and improve the utilization rate of the light. The prism film layer can comprise a lower prism sheet and an upper prism sheet. The number of diffusion plates, the number of light enhancement film layers, and the number of prism film layers, etc. can be set according to actual use requirements. The diffusion plate, the light enhancement film layer, the prism film layer, the light uniformization film layer, and the transmission-reflection film layer can be inserted into the accommodation interval S formed by the frame assembly 100 in sequence and stacked on the light-emitting substrate 220 in turn. It should be noted that the specific structure of the optical film layer is exemplarily shown in the embodiment of the present disclosure, and the optical film layer can also comprise other optical film layer structures.

[0090] Figure 6 Schematic diagram of part of the structure of the backlight module in an embodiment of the present disclosure Figure 1 , Figure 7 Schematic diagram of part of the structure of the backlight module in an embodiment of the present disclosure Figure 2 , Figure 8 Schematic diagram of part of the structure of the backlight module in an embodiment of the present disclosure Figure 9 Enlarged schematic diagram of the locking structure in an embodiment of the present disclosure. Refer to Figure 4 , Figure 6 , Figure 7 and Figure 8In an embodiment, the third protruding part 130 is provided with a positioning groove 131 for mounting a second positioning block 132 for positioning the optical film layer 300, the positioning groove 131 extending along the length direction of the frame of the accommodating section S. The positioning groove 131 vertically penetrates the third protruding part 130 and communicates with the accommodating section S, the second positioning block 132 matching the size of the positioning groove 131, the second positioning block 132 being inserted into the positioning groove 131 and extending above the optical film layer 300 and contacting the optical film layer 300 to position the optical film layer 300. The end of the second positioning block 132 away from the back plate 210 is located in the positioning groove 131 or flush with the top end of the positioning groove 131.

[0091] Referring to Figure 6 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 14 In an embodiment, the backlight module comprises a locking structure 400 arranged at the connection of the first frame 110 and the second frame 120. The locking structure 400 comprises a locking part 410, a first locking member 420 arranged on the first frame 110 and a second locking member 430 arranged on the second frame 120, and when the first frame 110 and the second frame 120 are connected to form a closed accommodating section S, the locking part 410 locks and combines the first locking member 420 and the second locking member 430.

[0092] Referring to Figure 9 , the connection end of the first frame 110 is provided with a first bent part 115, the first bent part 115 forming a first notch 117 towards one side of the accommodating section S, the first frame 110 being provided with a first clamping groove 116 at the end face away from the back plate 210, the connection end of the second frame 120 being provided with a protruding part 125, the protruding part 125 being received at the first notch 117, the protruding part 125 being provided with a second clamping groove 126 at the end face away from the back plate 210, the locking part 410 being clamped in the first clamping groove 116 and the second clamping groove 126, the first locking member 420 comprising the first bent part 115 and the first clamping groove 116, and the second locking member 430 comprising the protruding part 125 and the second clamping groove 126. With such a structure, the reliability of the first frame 110 and the second frame 120 after cooperative connection is good.

[0093] Referring to Figure 9 , Figure 10 and Figure 11In one embodiment, the connecting end of the first frame 110 is provided with a first bending part 115, which includes a first plate 1151 along the height direction of the first frame 110 and a second plate 1152 protruding towards the side of the accommodating interval S at the bottom of the first plate 1151. The edge part of the back plate 210 is overlapped on the second plate 1152, and the top surface of the first frame 110 and the first bending part 115 is provided with a first clamping groove 116, and a first gap is formed between the first plate 1151, the second plate 1152 and the connecting end of the first frame 110. The connecting end of the second frame 120 is provided with a protruding part 125 protruding towards the side of the accommodating interval S, which can be accommodated at the first gap 117. The protruding part 125 includes a third plate 1251 along the height direction of the second frame 120 and a fourth plate 1252 protruding towards the side of the accommodating interval at the top of the third plate 1251. The bottom surface of the third plate 1251 is overlapped on the back plate 210, and the top surfaces of the third plate 1251 and the fourth plate 1252 are provided with a second clamping groove 126. The locking part 410 is clamped in the first clamping groove 116 and the second clamping groove 126 to lock the first frame 110 and the second frame 120.

[0094] The locking part 410 can be a square clamp, a round clamp or a C-shaped clamp, etc. The structure of the locking part 410 can be designed according to the specific structure of the first clamping groove and the second clamping groove, which is not limited here. Referring to Figure 3 In the embodiment of the present disclosure, the locking part 410 is a square clamp.

[0095] The backlight module of the embodiment of the present disclosure uses the locking part 410 to lock and combine the first locking member 420 and the second locking member 430, which is convenient for assembly and disassembly.

[0096] Referring to Figure 7 In one embodiment, the backlight module 10 further includes a paste adhesive layer 500, which is arranged on the end surface of the first frame 110 away from the back plate 210. The paste adhesive layer 500 can also be arranged on the end surface of the second frame 120 away from the back plate 210. Exemplarily, the paste adhesive layer 500 is arranged along the direction of the top surface of the first frame 110 and the second frame 120. For example, when the frame assembly 100 is a square frame, the paste adhesive layer 500 is distributed along the top surface of the four frame edges of the frame assembly 100. The paste adhesive layer 500 can cover the second positioning block 132 and the locking part 410. In this way, the second positioning block 132 and the locking part 410 can be further fixed, and the display panel assembly is prepared.

[0097] Exemplarily, the paste adhesive layer 500 can be a foam adhesive layer.

[0098] Figure 12Fig. 2 is a schematic view of a back plate and a locking back plate in an embodiment of the present disclosure, Figure 13 Fig. 3 is a schematic view of a back plate and a circuit board installation in an embodiment of the present disclosure. Referring to Figure 4 、 Figure 5 、 Figure 12 and Figure 13 In an embodiment, the back plate 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 provided with a locking back plate 240, the locking back plate 240 is provided with a protruding portion 241, and the protruding portion 241 is used to install a circuit board P. The backlight module 10 further includes a clamp 600, and the clamp 600 is used to clamp the locking back plate 240 and the circuit board P on the second surface 213 of the back plate 210.

[0099] Referring to Figure 5 、 Figure 7 、 Figure 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 630 are connected through the connecting plate 620 and form a clamping groove facing the accommodation interval S. After the circuit board P is placed on the protruding portion 241, an external force can be used to open the clamping groove between the first limiting plate 601 and the second limiting plate 603, so that the first limiting plate abuts against the circuit board P, and the first limiting plate 610 is pressed and combined on a side of the back plate 210 away from the locking back plate 240, for example, the second limiting plate 630 can be pressed and combined on the light-emitting substrate 220, so as to fix the circuit board P and the locking back plate 240 together on the second surface 213 of the back plate 210. As shown in Figure 8 The second glue frame 120 is provided with a avoiding groove, and the clamp 600 can extend to the outside of the second glue frame 120 through the avoiding groove.

[0100] The back plate 210 of the embodiment of the present disclosure has no side plate bending structure, and the flatness and stability of the back plate 210 in the flat plate state are good, the assembly difficulty of the light-emitting substrate is reduced, and no reinforcing rib structure is needed for assistance, but since the circuit board and other structures need to be fixed or locked, the embodiment of the present disclosure is provided with the attached locking back plate 240 on the second surface 213, and the circuit board is installed with the assistance of the locking back plate 240.

[0101] In the related art, the circuit board of the backlight module is generally placed on the reinforcing rib protrusion of the back plate and is locked and fixed by fasteners such as screws. The second surface 213 of the backlight module is provided with a locking back plate 240, and the thickness of the locking back plate 240 can be 0.5 mm. The locking back plate is thinner than the protruding structure of the back plate in the prior art. The circuit board of the backlight module is arranged on the protruding portion 241 of the locking back plate, and the stability and heat dissipation function of the circuit board are not affected. Moreover, the main function of the locking back plate 240 is to fix the circuit board and other components, and the flatness and strength requirements of the locking back plate 240 are lower than those of the back plate 210. The thickness of the locking back plate 240 is 0.5 mm, which can meet the related requirements. Therefore, the overall thickness of the backlight module of the present embodiment is basically the same, and the backlight module 10 can reduce the design width of the side frame of the backlight module under the premise of ensuring the thickness, assembly and matching, so as to realize the frameless design.

[0102] The backlight module of the present embodiment can set the locking back plate 240 with the protruding portion 241 on the second surface 213 of the back plate 210 to assist the installation of the circuit board, so as to realize the narrow frame design without affecting the stability and heat dissipation function and the overall thickness of the backlight module.

[0103] The present embodiment also provides a maintenance method of a backlight module, which is suitable for assembling the backlight module 10 of any embodiment of the present disclosure. The assembly method of the backlight module can include: bonding the light emitting substrate 220 on one side of the back plate 210 to form a back plate assembly 200. The back plate assembly 200 is assembled with the first rubber frame 110, and the edge portion of the back plate assembly 210 is limited by the first limiting structure 111. The first rubber frame 110 and the second rubber frame 120 are connected to form a closed loop containing interval S, and the back plate assembly 200 is limited in the containing interval S by the first limiting structure 111 and the second limiting structure 121.

[0104] The technical solutions of the present embodiment are further illustrated by the assembly process of the backlight module in one embodiment of the present disclosure.

[0105] Referring to Figure 13 and Figure 15 The adhesive tape is arranged on the first surface of the back plate 210, the light emitting substrate 220 is adhered and fixed on the first surface of the back plate 210 to form a back plate assembly 200, the elastic pad 230 is adhered on the first surface 212 of the back plate 210 corresponding to the position of the second rubber frame 120, the locking back plate 240 is installed on the second surface 213 of the back plate 210, and the circuit board P is installed on the protruding portion of the locking back plate 240. The locking back plate 240 and the circuit board P are clamped on the second surface 212 of the back plate 210 by the clamp 600.

[0106] Referring toFigure 14 Insert the backboard assembly 200 into the first recess 114 between the first protruding part 112 and the second protruding part 113 of the first rubber frame 110, and insert the optical film layer 300, such as a diffusion plate, and the like in sequence on the second protruding part 113 of the first rubber frame 110, and stack the optical film layer 300 on the light-emitting substrate 220.

[0107] Referring to Figure 6 Assemble the second rubber frame 120 with the first rubber frame 110, cooperate the first locking member 420 and the second locking member 430, and assemble the second rubber frame 120 on the backboard 210 to form a closed-loop stress mode, complete the positioning of the internal structure, and cooperate the second limiting structure 121 of the second rubber frame 120 and the first limiting structure 111 to limit and fix the backboard 210 in the accommodation interval S.

[0108] Referring to Figure 8 Insert the locking part 410 into the groove of the first locking member 420 and the second locking member 430, and insert the second positioning block 117 into the positioning groove 116 to lock the end corners of the first rubber frame 110 and the second rubber frame 120, ensure the stability of the structure, and limit the displacement amount of the optical film layer 300 through the second positioning block 117.

[0109] Referring to Figure 7 Attach the adhesive layer 500 to the top surface of the first rubber frame 110 and the second rubber frame 120, and cover the adhesive layer 500 on the locking part 410 and the second positioning block 117 to perform auxiliary fixing, and the adhesive layer 500 can also assist in assembling the display panel.

[0110] The assembling method of the backlight module of the embodiment of the present disclosure reduces the assembly difficulty of the light-emitting substrate 220, reduces the risk of chipping caused by the assembly of the light-emitting substrate 220, improves the yield, and improves the assembly efficiency and disassembly efficiency.

[0111] Based on the inventive concept of the foregoing embodiment, the embodiment of the present disclosure also provides a display device, which includes 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 display, a notebook computer, a digital photo frame, a navigator, and the like.

[0112] The other configurations of the backlight module and the display device of the foregoing embodiment can be used in various technical solutions known to those skilled in the art at present and in the future, and will not be described in detail here.

[0113] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0114] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0115] In the present disclosure, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0116] In the present disclosure, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0117] The foregoing disclosure provides many different embodiments or examples for implementing different structures of the present disclosure. For simplicity of illustration, the foregoing description of a particular embodiment or example has at times been referred to as including certain features, structures, or steps. This should be understood as meaning that when the specific example is described, those features, structures, or steps are included in at least one example of the disclosure. However, they need not be included in every example in order to provide a complete description of the present disclosure. Furthermore, the disclosure can refer to a number of different examples, components, and / or steps, which can be implemented in different combinations and / or in different orders. Such variations and modifications are contemplated as falling within the scope of the present disclosure.

[0118] Although the present disclosure has been described with reference to specific embodiments, it is apparent that various modifications and changes can be made by those skilled in the art without departing from the spirit of the disclosure. Accordingly, the disclosure should not be limited by the specific embodiments described above but should be defined by the claims appended hereto.

Claims

1. A backlight module, characterized in that, The backlight module comprises: a rubber frame assembly comprising a first rubber frame and a second rubber frame, the first rubber frame and the second rubber frame being sequentially connected to form a closed loop containing area, the first rubber frame being provided with a first limiting structure on one side facing the containing area, and the second rubber frame being provided with a second limiting structure on one side facing the containing area; a backboard assembly comprising a backboard and a light-emitting substrate, the backboard being flat, and the light-emitting substrate being arranged on the backboard, the backboard assembly being limited in the containing area by the first limiting structure and the second limiting structure; wherein the first rubber frame is provided with a first protruding part and a second protruding part on one side facing the containing area, the first protruding part and the second protruding part are arranged at intervals, a first groove is formed between the first protruding part and the second protruding part, the first limiting structure comprises the first groove, and an edge part of the backboard facing the first rubber frame is located in the first groove and supported on the first protruding part; the second rubber frame is provided with a bending structure protruding from the edge of the backboard on the side away from the containing area, a second groove facing the containing area is formed between the bending structure and the edge of the second rubber frame, the second limiting structure comprises the second groove, the second rubber frame is provided with at least one first positioning block on the side facing the containing area, the first positioning block protrudes to the edge of the second rubber frame, and the backboard is provided with a slot matching the first positioning block at a position close to the second rubber frame, and the first positioning block is inserted into the slot.

2. The backlight module of claim 1, wherein, The protruding size of the second protruding part relative to the first rubber frame is smaller than the protruding size of the first protruding part relative to the first rubber frame.

3. The backlight module of claim 1, wherein, The bending edge of the bending structure has a first gap with the first positioning block, the size of the first gap is greater than the thickness of the backboard, and an elastic pad is arranged on the backboard in the second groove.

4. The backlight module of claim 1, wherein, The backlight module further comprises an optical film layer, an end of the first rubber frame away from the backboard and / or an end of the second rubber frame away from the backboard is provided with a third protruding part protruding towards the containing area, and the optical film layer is limited between the light-emitting substrate and the third protruding part.

5. The backlight module of claim 4, wherein, The third protruding part is provided with a positioning slot, and a second positioning block is inserted into the positioning slot and contacts the optical film layer to position the optical film layer.

6. The backlight module according to any one of claims 1 to 5, wherein, The backlight module comprises a locking structure arranged at the connection between the first rubber frame and the second rubber frame, the locking structure comprises a locking part, a first locking member arranged on the first rubber frame, and a second locking member arranged on the second rubber frame, and when the first rubber frame and the second rubber frame are connected to form a closed loop containing area, the locking part locks and combines the first locking member and the second locking member.

7. The backlight module of claim 6, wherein, The connecting end of the first glue frame is provided with a first bending part, a first notch is formed on one side of the accommodating interval towards the first bending part, the first glue frame is provided with a first clamping groove on the end face away from the back plate side of the first bending part, the connecting end of the second glue frame is provided with a protruding part, the protruding part is received at the first notch, the end face away from the back plate side of the protruding part is provided with a second clamping groove, the locking part is clamped in the first clamping groove and the second clamping groove, the first locking member includes the first bending part and the first clamping groove, and the second locking member includes the protruding part and the second clamping groove.

8. The backlight module of claim 1, wherein, The backlight module further comprises a pasting glue layer, which is arranged on the end face of the first glue frame away from the back plate side and the end face of the second glue frame away from the back plate side.

9. The backlight module of claim 1, wherein, The back plate comprises a first surface and a second surface, the light-emitting substrate is arranged on the first surface, the second surface is provided with a locking back plate, the locking back plate is provided with a protruding part, and the protruding part is used for mounting a circuit board. The backlight module further comprises a clamp, which is used for clamping the locking back plate and the circuit board on the second surface of the back plate.

10. A method of assembling a backlight module, suitable for assembling the backlight module according to any one of claims 1 to 9, characterized in that, The method comprises: bonding the light-emitting substrate on one side of the back plate to form a back plate assembly; assembling the back plate assembly with the first glue frame, and limiting the edge part of the back plate assembly through the first limiting structure; connecting the first glue frame and the second glue frame to form a closed-loop accommodating interval, and limiting the back plate assembly in the accommodating interval through the first limiting structure and the second limiting structure.

11. A display device comprising: The backlight module comprises the back plate, the light-emitting substrate, the first glue frame, the second glue frame, the first limiting structure, the second limiting structure, the first locking member, the second locking member, and the pasting glue layer. The backlight module comprises the back plate, the light-emitting substrate, the first glue frame, the second glue frame, the first limiting structure, the second limiting structure, the first locking member, the second locking member, and the pasting glue layer.

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