Backboard assembly, backlight module and display module

Abstract

The embodiment of the utility model provides a back plate assembly, a backlight module and a display module, the back plate assembly comprises a back plate which comprises a bottom plate and a plurality of side plates and forms a space for accommodating a light guide film material; at least one side plate is provided with at least one clamping assembly, the clamping assembly comprises a groove with a first opening, and a first hanging lug and a second hanging lug which are protruded are arranged on the two sides of the first opening; the middle frame comprises a plurality of side frames opposite to the side plates, and each side frame comprises a vertical part; the first horizontal part is located at the bottom of the vertical part, extends in the direction away from the side plate and is used for limiting the displacement of the light guide film material in the first direction; the second horizontal part is located at the top of the vertical part and provided with a clamping part, the clamping part is inserted into the groove and partially abuts against the first hanging lug and the second hanging lug, a first clamping groove and a second clamping groove are formed in the two sides of the clamping part, and the first hanging lug and the second hanging lug are inserted into the first clamping groove and the second clamping groove respectively. The back plate and the middle frame are firmly clamped, and the overall size of the back plate assembly is reduced.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a back panel assembly, a backlight module, and a display module. Background Technology

[0002] Current TLCM (Liquid Crystal Display Module with Touch Function) products, when using a back panel assembly that includes a mid-frame and a back panel with storage space, cannot further reduce the size of the back panel assembly because the back panel and mid-frame are connected by a snap-fit ​​joint, which occupies a large portion of the overall size of the back panel assembly. In addition, there are minimum thickness and structural limitations. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a back panel assembly, a backlight module, and a display module, so as to ensure a firm fit between the mid-frame and the back panel while reducing the overall size of the back panel assembly. The specific technical solution is as follows:

[0004] An embodiment of the first aspect of this application provides a backplate assembly, wherein the backplate assembly includes: a backplate, including a base plate and a plurality of side plates disposed around the base plate, the base plate and the side plates surrounding to form a receiving space with a top opening for receiving a light guide film; at least one side plate has at least one snap-fit ​​assembly at its free end, the snap-fit ​​assembly including: a groove formed at the free end of the side plate along a first direction, the first direction being the thickness direction of the backplate assembly, the inner sidewall of the groove having a first opening that can communicate with a middle frame, and the inner side of the side plate having a first hook and a second hook protruding toward one side of the middle frame, the first hook and the second hook being at least partially disposed opposite to the groove so that the first opening is located between the first hook and the second hook; The middle frame includes multiple frame borders opposite to the side panels. Each frame border includes: a vertical portion located inside the side panels; a first horizontal portion located at the bottom of the vertical portion along a first direction and extending away from the side panels to limit the displacement of the light guide film in the first direction; and a second horizontal portion located at the top of the vertical portion along the first direction. The second horizontal portion is provided with a locking portion that is inserted into a groove. The two ends of the locking portion along the extension direction of the frame border abut against the first and second hanging ears to limit the locking portion from disengaging from the groove. The frame border is provided with a first slot and a second slot on both sides of the locking portion along the extension direction of the frame border. The first hanging ear and the second hanging ear are respectively inserted into the first slot and the second slot to engage the back panel with the middle frame. On one hand, a snap-fit ​​assembly, including a first and second protruding lug on the side panel, is provided to connect the back panel and the middle frame. This allows the first and second lugs to be positioned within the expansion gap between the side panel and the light guide film. When the back panel and middle frame are connected, the first and second lugs protruding from the side panel are inserted into the corresponding first and second slots of the middle frame's edge. Therefore, the snap-fit ​​structure does not increase the frame size, effectively utilizing the expansion gap between the side panel and the light guide film, thus reducing the frame size after the back panel and middle frame are snap-fitted together. The snap-fit ​​connection between the back panel and the middle frame not only ensures a secure connection, reducing the risk of detachment or separation, but also minimizes the impact of the first and second lugs protruding from the side panel on the overall size of the back panel and middle frame after snap-fitting, thereby reducing the overall size of the back panel assembly.

[0005] The first and second hooks are at least partially disposed opposite to the groove. The portions opposite to the groove are used to engage and limit the engagement of the locking part. The more portions of the first and second hooks that are disposed opposite to the groove, the better the engagement and limiting effect of the locking part. Preferably, a portion of the first and second hooks is disposed opposite to the groove, and a portion is connected to the side plate. This can also increase the connection stability between the first and second hooks and the side plate and prevent damage to the hooks.

[0006] Understandably, the number of snap-fit ​​components is related to the size of the backplate assembly. When the backplate size is large, the number of components can be increased appropriately, and the size of the groove and the snap-fit ​​part can also be adjusted according to the size of the backplate assembly.

[0007] In some embodiments of this application, the first card slot and the second card slot are all or partly located on the second horizontal portion.

[0008] The first and second slots are both located on the second horizontal part. By accommodating the first and second hooks in the first and second slots, the side panel is thinned in the area where the hooks are not provided relative to the area where the hooks are provided. Compared with the solution where the hooks and the side panel have the same thickness, the size of the frame can be reduced, thereby reducing the overall size of the back panel assembly.

[0009] The first and second slots being located on the second horizontal part means that a portion of the first and second slots is located on the second horizontal part and a portion is located on the vertical part. This allows the first and second hooks to mate with the middle frame closer to the inside of the middle frame. Under the condition that the thickness of the first and second hooks and the groove width are constant, the non-overlapping size of the middle frame and the back panel becomes smaller, which can reduce the size of the two after assembly, thereby further reducing the frame of the back panel assembly.

[0010] Furthermore, in some embodiments of this application, the first slot and the second slot are located on the vertical portion and the first horizontal portion.

[0011] The first and second slots are located on the vertical and horizontal portions, respectively, so that the first and second hooks are closer to the inside of the middle frame when they mate with the middle frame. Under the condition that the thickness of the first and second hooks is constant and the groove width is constant, the size of the middle frame and the back panel that do not overlap becomes smaller, which can reduce the size of the two after assembly, thereby further reducing the frame of the back panel assembly.

[0012] In some embodiments of this application, a portion of the bottom wall of the groove is bent upward to form a central lug that separates the first opening. The engaging portion has a through hole opposite to the central lug, and the central lug and the through hole cooperate with each other. Through the above arrangement, an additional engaging structure is added, namely the engaging engagement between the central lug and the through hole, which makes the back plate and the middle frame firmly engaged, reducing the risk of the back plate and the middle frame falling off or separating.

[0013] In some embodiments of this application, the vertical portion and the first horizontal portion are provided with clearance portions communicating with the through hole. This provides sufficient space to accommodate the central lug that protrudes from the overall outline of the back panel for engagement, ensuring that the central lug does not interfere with the frame. This helps to reduce the impact of the central lug on the overall size of the back panel assembly, thereby reducing the overall size of the back panel assembly.

[0014] In some embodiments of this application, along a direction perpendicular to the first direction and parallel to the side plate, the maximum value of the dimension of the first hook, second hook, and middle hook protruding from the inner sidewall of the side plate is E = FH, where F is the expansion space required for the light guide film, and H is the gap required for assembling the light guide film, including the assembly error between the light guide film and the back plate, as well as the dimensional tolerances of the back plate and the light guide film. F is the gap between the light guide film and the side plate after the light guide film is placed in the receiving space of the back plate, used to reduce the risk of damage to the light guide film due to contact with the side wall when the light guide film expands. H is the gap required for installing the film, i.e., the minimum gap between the light guide film and the side wall, i.e., the distance from the inner wall of the first hook, second hook, and middle hook to the light guide film. Since the first, second, and middle hooks protrude from the overall outline of the side panel and are used for snapping, the E value is increased, which can reduce the occupancy of the snap-fit ​​assembly on the overall size of the side panel, thus helping to reduce the overall size of the side panel and consequently the overall size of the back panel assembly.

[0015] In some embodiments of this application, the back panel includes a base plate and four side plates arranged around the base plate, with snap-fit ​​components provided on opposite or adjacent side plates. Providing snap-fit ​​components on multiple side plates ensures a secure connection between the back panel and the middle frame, reducing the risk of detachment or separation between the back panel and the middle frame. Furthermore, it helps reduce the overall size of the multiple side plates, thereby reducing the overall size of the back panel assembly.

[0016] In some embodiments of this application, the backplate includes a base plate and four side plates arranged around the base plate. The four side plates are a first side plate and a second side plate opposite each other along a second direction, and a third side plate and a fourth side plate opposite each other along a third direction. The third side plate is located on the top side, and the fourth side plate is located on the ground side. The first side plate, the second side plate, and the third side plate are provided with snap-fit ​​components. The openings for the electrical connection terminals for leading out the flexible circuit board are concentrated on the fourth side plate, and snap-fit ​​components are provided on the other side plates. This can limit the movement in both the first and second directions, making the backplate and the middle frame firmly snapped together. This reduces the risk of the backplate and the middle frame falling off or separating, and it also helps to reduce the overall size of the multiple side plates, thereby helping to reduce the overall size of the backplate assembly.

[0017] An embodiment of the second aspect of this application provides a backlight module that includes a backplate assembly according to any embodiment of the first aspect. This is beneficial for increasing the proportion of the display area in the overall backlight module size and for improving the performance of the backlight module.

[0018] An embodiment of the third aspect of this application provides a display module, which includes the backlight module provided in the second aspect. The display module further includes a display panel disposed above a back panel assembly. This can increase the proportion of the actual usable area in the display panel, i.e., the display area in the backlight module provided in the second aspect, in the overall size of the display panel, which is beneficial to improving the performance of the display module.

[0019] Beneficial effects of the embodiments in this application:

[0020] The backplate assembly, backlight module, and display module provided in this embodiment of the utility model include: a backplate, including a base plate and a plurality of side plates disposed around the base plate, the base plate and the side plates surrounding each other to form a receiving space with a top opening for accommodating a light guide film; at least one side plate has at least one snap-fit ​​assembly at its free end, the snap-fit ​​assembly including: a groove formed at the free end of the side plate along a first direction, the first direction being the thickness direction of the backplate assembly, the inner sidewall of the groove having a first opening that can communicate with the middle frame, and the inner side of the side plate having a first hook and a second hook protruding towards one side of the middle frame, the first hook and the second hook being at least partially disposed opposite to the groove, such that the first opening is located between the first hook and the second hook. The middle frame includes multiple frame borders opposite to the side panels. Each frame border includes: a vertical portion located inside the side panels; a first horizontal portion located at the bottom of the vertical portion along a first direction and extending away from the side panels to limit the displacement of the light-guiding film material in the first direction; and a second horizontal portion located at the top of the vertical portion along the first direction. The second horizontal portion has a locking portion that inserts into a groove. The two ends of the locking portion along the extension direction of the frame border abut against a first hook and a second hook portion to prevent the locking portion from disengaging from the groove. On both sides of the locking portion along the extension direction of the frame border, there are a first slot and a second slot. The first hook and the second hook are respectively inserted into the first slot and the second slot to engage the back panel with the middle frame. On the one hand, by providing a locking assembly including a first hook and a second hook protruding from the side panel to connect the back panel and the middle frame, the size occupied by the back panel side panel due to the engagement connection between the back panel and the middle frame is reduced, which is beneficial to reducing the overall size of the back panel side panel. On the other hand, the first and second hooks protruding from the side panel are inserted into the first and second slots corresponding to the edge of the middle frame when the back panel and the middle frame are connected. This not only ensures a secure connection between the back panel and the middle frame, reducing the risk of detachment or separation, but also helps to minimize the impact of the first and second hooks protruding from the side panel on the overall dimensions after the back panel and the middle frame are connected, thereby reducing the overall size of the back panel assembly. Of course, any product implementing this invention does not necessarily need to achieve all of the above advantages simultaneously. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a structural schematic diagram of a backplane assembly according to this application;

[0023] Figure 2 for Figure 1 A partial schematic diagram of Q;

[0024] Figure 3 for Figure 1 Schematic diagram of AA section;

[0025] Figure 4 for Figure 2 A schematic diagram of the card-connecting component structure;

[0026] Figure 5a This is a schematic diagram of the structure of the first type of engaging part in this application;

[0027] Figure 5b This is a schematic diagram of the structure of the second type of engaging part in this application;

[0028] Figure 6 This is a schematic diagram of the structure of the third type of locking part in this application;

[0029] Figure 7 This is a schematic diagram of the connection between the snap-fit ​​assembly and the snap-fit ​​part of a backplate assembly according to this application;

[0030] Figure 8 for Figure 7 A schematic diagram of the card-connecting component structure;

[0031] Figure 9 for Figure 7 A schematic diagram of the engaging part structure in the middle;

[0032] Figure 10 for Figure 7 Schematic diagram of the BB cross section;

[0033] Figure 11 This is a schematic diagram of the structure of the first display module of this application;

[0034] Figure 12 This is a schematic diagram of the structure of the second type of display module in this application;

[0035] Figure 13 This is a schematic diagram of the structure of the third type of display module in this application.

[0036] Reference numerals: Back panel assembly 00; Back panel 10; Bottom plate 11; Side panel 12; First side panel 12A; Second side panel 12B; Third side panel 12C; Fourth side panel 12D; Snap-fit ​​assembly 121; Groove 1211; First opening 12111; First hanging ear 1212; Second hanging ear 1213; Middle hanging ear 1214; Protrusion 122; Middle frame 20; Frame 21; Vertical part 211; First horizontal part 212; Second horizontal part 213; Snap-fit ​​part 2131; First slot 214; Second slot 215; Through hole 21311; Clearance part 217; Light guide film 01; Backlight module 100; Display module 1100; Display panel 1101; First direction X; Second direction Y; Third direction Z. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art based on this application are within the protection scope of the present utility model.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] like Figure 1As shown, an embodiment of the first aspect of this application provides a back panel assembly 00. Taking a back panel 10 including four side panels 12 as an example, the back panel assembly 00 includes: a back panel 10, including a bottom plate 11 and a plurality of side panels 12 disposed around the bottom plate 11, such as... Figure 3 and Figure 4 As shown, the base plate 11 and the side plate 12 surround a receiving space forming a top opening for accommodating the light guide film 01; at least one free end of the side plate 12 is provided with at least one snap-fit ​​assembly 121, the snap-fit ​​assembly 121 including: a groove 1211 formed at the free end of the side plate 12 along a first direction X, the first direction X being the thickness direction of the back plate assembly 00, the inner sidewall of the groove 1211 having a first opening 12111 that can communicate with the middle frame 20, the inner side being the side near the center of the back plate 10, the inner side of the side plate 12 being provided with a first hook 1212 and a second hook 1213 protruding towards the middle frame 20, the first hook 1212 and the second hook 1213 being at least partially disposed opposite to the groove 1211, so that the first opening 12111 is located between the first hook 1212 and the second hook 1213; as Figure 3 As shown, the middle frame 20 includes a plurality of frame borders 21 opposite to the side panel 12. Each frame border 21 includes: a vertical portion 211 located inside the side panel 12; a first horizontal portion 212 located at the bottom of the vertical portion 211 along a first direction X, extending away from the side panel 12 to limit the displacement of the light guide film 01 in the first direction X; and a second horizontal portion 213 located at the top of the vertical portion 211 along the first direction X. Figure 2 As shown, the second horizontal part 213 is provided with a locking part 2131, which is inserted into the groove 1211. The two ends of the locking part 2131 along the extension direction of the frame 21 abut against the first hook 1212 and the second hook 1213 to prevent the locking part 2131 from disengaging from the groove 1211. On both sides of the locking part 2131 along the extension direction of the frame 21, there is a first slot 214 and a second slot 215. The first hook 1212 and the second hook 1213 are respectively inserted into the first slot 214 and the second slot 215 so that the back plate 10 is engaged with the middle frame 20.

[0042] In this embodiment, a snap-fit ​​assembly 121, including a first hook 1212 and a second hook 1213 protruding from the side plate 12, is provided on the side plate 12 to connect the back plate 10 and the middle frame 20. This allows the first hook 1212 and the second hook 1213 to be located at the expansion gap between the side plate 12 and the light guide film 01. When the back plate 10 and the middle frame 20 are connected, the first hook 1212 and the second hook 1213 protruding from the side plate 12 are inserted into the first slot 214 and the second slot 215 corresponding to the frame 21 of the middle frame 20. Therefore, the snap-fit ​​structure does not increase the size of the frame 21. In other words, the snap-fit ​​structure makes reasonable use of the expansion gap between the side plate 12 and the light guide film 01, thereby reducing the size of the frame 21 after the back plate 10 and the middle frame 20 are snap-fitted together. The back panel 10 and the middle frame 20 are connected by a snap-fit ​​mechanism, which not only makes the back panel 10 and the middle frame 20 firmly snap-fitted, reducing the risk of the back panel 10 and the middle frame 20 falling off or separating, but also helps to reduce the impact of the first hook 1212 and the second hook 1213 of the protruding side panel 12 on the overall size of the back panel 10 and the middle frame 20 after they are snap-fitted, thereby helping to reduce the overall size of the back panel assembly 00.

[0043] The first lug 1212 and the second lug 1213 are at least partially disposed opposite to the groove 1211. The portion opposite to the groove 1211 is the portion used to engage and limit the engagement of the engaging portion 2131. The more portions of the first lug 1212 and the second lug 1213 that are disposed opposite to the groove 1211, the better the engagement and limiting effect on the engaging portion 2131. Preferably, a portion of the first lug 1212 and the second lug 1213 are disposed opposite to the groove 1211, and a portion is connected to the side plate 12. This can also increase the connection stability between the first lug 1212 and the second lug 1213 and the side plate 12 and prevent damage to the lugs.

[0044] Understandably, the number of snap-fit ​​components 121 is related to the size of the backplate assembly 00. When the size of the backplate 10 is large, the number of components can be increased appropriately. The size of the groove 1211 and the snap-fit ​​part 2131 can also be adjusted according to the size of the backplate assembly 00.

[0045] In some embodiments of this application, such as Figure 5a and Figure 5b As shown, the first card slot 214 and the second card slot 215 are all or partly located on the second horizontal part 213.

[0046] like Figure 5aAs shown, the first slot 214 and the second slot 215 are both located on the second horizontal portion 213. By accommodating the first hook 1212 and the second hook 1213 in the first slot 214 and the second slot 215, the side plate 12 is thinned in the area where the hook is not provided relative to the area where the hook is provided. Compared with the solution where the hook and the side plate 12 have the same thickness, the size of the frame 21 can be reduced, thereby reducing the overall size of the back plate assembly 00.

[0047] like Figure 5b As shown, the first slot 214 and the second slot 215 are partially located on the second horizontal portion 213, meaning that part of the first slot 214 and the second slot 215 are located on the second horizontal portion 213 and part of them are located on the vertical portion 211. This allows the first hook ear 1212 and the second hook ear 1213 to mate with the middle frame 20 closer to the inside of the middle frame 20. Under the condition that the thickness of the first hook ear 1212 and the second hook ear 1213 is constant and the width of the groove 1211 is constant, the size of the middle frame 20 and the back plate 10 that do not overlap becomes smaller, which can reduce the size of the two after assembly, thereby further reducing the frame 21 of the back plate assembly 00.

[0048] Furthermore, in some embodiments of this application, such as Figure 6 As shown, the first slot 214 and the second slot 215 are located on the vertical part 211 and the first horizontal part 212.

[0049] The first slot 214 and the second slot 215 are located on the vertical portion 211 and the first horizontal portion 212, respectively, so that the positions where the first hook ear 1212 and the second hook ear 1213 mate with the middle frame 20 are closer to the inside of the middle frame 20. Under the condition that the thickness of the first hook ear 1212 and the second hook ear 1213 are constant and the width of the groove 1211 is constant, the non-overlapping dimensions of the middle frame 20 and the back plate 10 become smaller, which can reduce the overall size after assembly, thereby further reducing the frame 21 of the back plate assembly 00. In some embodiments of this application, such as... Figure 8 As shown, a portion of the bottom wall of the groove 1211 bends upward to form a middle lug 1214 that separates the first opening 12111, as... Figure 9 As shown, the engaging part 2131 is provided with a through hole 21311 opposite to the middle lug 1214, such as Figure 7 As shown, the middle lug 1214 and the through hole 21311 cooperate with each other. Through the above arrangement, an additional locking structure is added, namely the locking cooperation between the middle lug 1214 and the through hole 21311, which makes the back plate 10 and the middle frame 20 firmly locked together, reducing the risk of the back plate 10 and the middle frame 20 falling off or separating.

[0050] In some embodiments of this application, such as Figure 9As shown, the vertical portion 211 and the first horizontal portion 212 are provided with a clearance portion 217 communicating with the through hole 21311. Sufficient space is provided to accommodate the intermediate hook 1214, which protrudes from the overall outline of the back panel 10 for engagement, ensuring that the intermediate hook 1214 does not interfere with the frame 21. This helps to reduce the impact of the intermediate hook 1214 on the overall size of the back panel assembly 00, thereby reducing the overall size of the back panel assembly 00.

[0051] In some embodiments of this application, such as Figure 10 As shown, taking the cross-sectional view at the middle hook 1214 as an example, along the direction perpendicular to the first direction X and parallel to the side plate 12, the maximum value of the dimensions of the first hook 1212, the second hook 1213, and the middle hook 1214 protruding from the inner wall of the side plate 12 is E = FH. Here, F is the expansion space required for the light guide film 01, and H is the gap required during the assembly of the light guide film, including the assembly error between the light guide film and the back plate, as well as the dimensional tolerances of the back plate and the light guide film. F is the gap between the light guide film 01 and the side plate 12 after the light guide film 01 is placed in the receiving space of the back plate 10, used to reduce the risk of damage to the light guide film 01 due to contact with the inner wall of the side plate 12 when the light guide film 01 expands. H represents the gap required for installing the film material, i.e., the minimum gap between the light guide film 01 and the inner wall of the side plate 12, i.e., the distance between the inner walls of the first hook 1212, the second hook 1213, and the middle hook 1214 and the light guide film 01. Since the first hook 1212, the second hook 1213, and the middle hook 1214 protrude from the overall outline of the side plate 12, and are used for locking, in this embodiment, the first hook 1212, the second hook 1213, and the middle hook 1214 are protruding from the inner wall of the side plate 12 and located in the first slot 214 and the second slot 215. This reduces the occupancy of the locking assembly 121 on the overall size of the side plate 12, which is beneficial for reducing the overall size of the side plate 12, thereby reducing the overall size of the back plate assembly 00. The maximum size that can be reduced is E.

[0052] In some embodiments of this application, the back panel 10 includes a base plate 11 and four side plates 12 arranged around the base plate 11. A snap-fit ​​assembly 121 is provided on two opposite or adjacent side plates 12. Providing snap-fit ​​assemblies 121 on the multiple side plates 12 ensures a secure snap-fit ​​between the back panel 10 and the middle frame 20, reducing the risk of the back panel 10 and the middle frame 20 detaching or separating. Furthermore, it helps to reduce the overall size of the multiple side plates 12, thereby reducing the overall size of the back panel assembly 00.

[0053] In some embodiments of this application, such as Figure 1As shown, the backplate 10 includes a base plate 11 and four side plates 12 arranged around the base plate 11. The four side plates 12 are a first side plate 12A and a second side plate 12B that are opposite each other along the second direction Y, and a third side plate 12C and a fourth side plate 12D that are opposite each other along the third direction Z. The third side plate 12C is located on the top side, and the fourth side plate 12D is located on the ground side. The fourth side plate 12D has an opening for leading out the electrical connection terminals of the flexible circuit board. The first side plate 12A, the second side plate 12B and the third side plate 12C are provided with snap-fit ​​components 121. The openings for the electrical connection terminals used to lead out the flexible circuit board are concentrated on the fourth side plate 12D, and the snap-fit ​​components 121 are provided on the other side plates 12. The movement in both the first direction X and the second direction Y is limited, so that the back plate 10 and the middle frame 20 are firmly snapped together, reducing the risk of the back plate 10 and the middle frame 20 falling off or separating. Moreover, it is beneficial to reduce the overall size of the multiple side plates 12, thereby reducing the overall size of the back plate assembly 00.

[0054] An embodiment of the second aspect of this application provides a backlight module including a backplate assembly according to any embodiment of the first aspect. This is beneficial for increasing the proportion of the display area in the overall size of the backlight module 100, and for improving the performance of the backlight module 100.

[0055] An embodiment of the third aspect of this application provides a display module 1100, such as... Figure 11 , Figure 12 and Figure 13 As shown, it includes the backlight module 100 provided in the second aspect, and the display module 1100 also includes a display panel 1101 disposed above the back panel assembly 00. The mounting method of the display panel 1101 and its positional relationship with the back panel assembly 00 are not limited, and can include, but are not limited to, the following three forms: such as... Figure 11 As shown, the back panel assembly 00 extends beyond the edge of the display panel 1101; as Figure 12 As shown, the display panel 1101 extends beyond the edge of the back panel assembly 00; as Figure 13 As shown, the side panel 12 of the back panel assembly 00 also includes a protrusion 122. The protrusions 122 of the multiple side panels 12 form a receiving space for accommodating the display panel 1101. This can increase the proportion of the actual usable area in the display panel 1101, i.e., the display area in the backlight module 100 provided in the second aspect, in the overall size of the touch panel 1101, which is beneficial to improving the performance of the display module 1100.

[0056] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A backplane assembly, characterized by, The backplane assembly includes: The backplate includes a bottom plate and a plurality of side plates arranged around the bottom plate, the bottom plate and the side plates surrounding to form a receiving space with a top opening for receiving light guide film material; At least one of the free ends of the side plate is provided with at least one snap-fit ​​component, the snap-fit ​​component comprising: A groove is formed at the free end of the side plate along a first direction, the first direction being the thickness direction of the back plate assembly. The inner wall of the groove has a first opening that can communicate with the middle frame. The inner side of the side plate is provided with a first hook and a second hook that protrude toward the middle frame. The first hook and the second hook are at least partially disposed opposite to the groove so that the first opening is located between the first hook and the second hook. The middle frame includes a plurality of borders opposite to the side panel, the borders including: The vertical part is located on the inner side of the side plate; A first horizontal portion, located at the bottom of the vertical portion along the first direction, extends away from the side plate and is used to limit the displacement of the light guide film in the first direction; The second horizontal portion is located at the top of the vertical portion along the first direction. The second horizontal portion is provided with a locking portion, which is inserted into the groove. The two ends of the locking portion along the extension direction of the frame abut against the first and second hanging ears to prevent the locking portion from disengaging from the groove. The frame is provided with a first slot and a second slot on both sides of the locking portion along the extension direction of the frame. The first hanging ear and the second hanging ear are respectively inserted into the first slot and the second slot to make the back plate engage with the middle frame.

2. The backsheet assembly of claim 1, wherein, The first card slot and the second card slot are all or partly located on the second horizontal part.

3. The backsheet assembly of claim 1, wherein, The first slot and the second slot are located on the vertical part and the first horizontal part, respectively.

4. The backsheet assembly of any one of claims 1 to 3, wherein, A portion of the bottom wall of the groove is bent upward to form a middle lug that separates the first opening. The engaging part is provided with a through hole opposite to the middle lug, and the middle lug and the through hole cooperate with each other.

5. The backplane assembly according to claim 4, characterized in that, The vertical portion and the first horizontal portion are provided with clearance portions that communicate with the through hole.

6. The backsheet assembly of claim 4, wherein, Along a direction perpendicular to the first direction and parallel to the side plate, the maximum value of the dimensions of the first hook, the second hook, and the middle hook protruding from the inner sidewall of the side plate is E = FH, where F is the expansion space required for the light guide film, and H is the gap required for the assembly of the light guide film, including the assembly error between the light guide film and the back plate, as well as the dimensional tolerances of the back plate and the light guide film.

7. The backsheet assembly of any one of claims 1 to 3, wherein, The back plate includes a base plate and four side plates arranged around the base plate, with the snap-fit ​​assembly provided on two opposite or adjacent side plates.

8. The backsheet assembly of any one of claims 1 to 3, wherein, The back plate includes a base plate and four side plates arranged around the base plate. The four side plates are a first side plate and a second side plate opposite to each other along a second direction, and a third side plate and a fourth side plate opposite to each other along a third direction. The third side plate is located on the top side, and the fourth side plate is located on the ground side. The snap-fit ​​assembly is provided on the first side plate, the second side plate, and the third side plate.

9. A backlight module, characterized in that, The backplate assembly of any one of claims 1-8.

10. A display module, characterized in that, The backlight module of claim 9, further comprising a display panel disposed above the backplate assembly.

Images