Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device.The backlight module comprises a back plate, a face frame and a plurality of limiting blocks, the back plate comprises a bottom plate part, a forward folding part and a backward folding part, and the backward folding part is connected with the fourth side of the bottom plate part; the backward folding part and the forward folding part are respectively positioned on the front surface and the back surface of the bottom plate part; the multiple limiting blocks are sequentially arranged at intervals in the length direction of the fourth side of the bottom plate part, and the limiting blocks are detachably connected with the bottom plate part; a supporting surface for supporting the display panel is arranged on the limiting block; the face frame comprises a pressing plate and a fixing plate which are connected with each other, and the fixing plate is arranged opposite to the back folding part and is connected with the back folding part; the pressing plate is located on the side, away from the bottom plate part, of the limiting block and abuts against the forward folding part. Through the design, the problems that the double faced adhesive tape falls off and the display panel cracks are avoided.

Description

Technical Field

[0001] This application relates to the field of display technology, and more particularly to a backlight module and a display device. Background Technology

[0002] As the LCD market approaches saturation, high-performance, cost-effective products are increasingly in demand. Reducing component costs, improving production efficiency, enhancing product reliability, and achieving differentiation have become the goals pursued by major manufacturers. LCD products include backlight modules and display panels. Backlight modules consist of a backplate, mid-frame, front frame, lamp panel, and optical films. The lamp panel is located below the optical films, and both the lamp panel and optical films are housed within the cavity formed by the backplate. The display panel is bonded to the backplate or the mid-frame connected to the backplate using adhesive, and is positioned above the optical films. The mid-frame and front frame are located on the ground side of the backplate to support and cushion the display panel.

[0003] In backlight modules, double-sided tape is typically used to attach silicone to the mid-frame to cushion the display panel. However, because the mid-frame and double-sided tape are both long and integral structures, the contact area with the display panel is too large. As a result, the double-sided tape often falls off the mid-frame or gets scraped onto the surface of the display panel during assembly. In this case, the double-sided tape not only fails to provide cushioning but also presses against the display panel, increasing the risk of cracking. Utility Model Content

[0004] The purpose of this application is to provide a backlight module and display device that avoids the problem of double-sided adhesive peeling off and causing the display panel to crack.

[0005] This application discloses a backlight module, which includes a backplate, a front frame, and multiple limiting blocks. The backplate includes a base plate, a forward folding portion, and a backward folding portion. The base plate has a first side, a second side, a third side, and a fourth side. The first side and the third side are opposite to each other, and the second side and the fourth side are opposite to each other. The forward folding portion is connected to the first, second, and third sides of the base plate, and the backward folding portion is connected to the fourth side of the base plate. The backward folding portion and the forward folding portion are respectively located at... The base plate has two sides, and the forward folding part has a contact surface for attaching with the display panel; multiple limiting blocks are arranged sequentially at intervals along the length direction of the fourth side of the base plate, and the limiting blocks are detachably connected to the base plate; the limiting blocks have a support surface for supporting the display panel; the face frame includes a connected pressure plate and a fixing plate, the fixing plate is arranged opposite to the backward folding part and connected to the backward folding part; the pressure plate is located on the side of the limiting block away from the base plate and abuts against the forward folding part.

[0006] Optionally, the limiting block includes a fixing base, a soft rubber sheet, and a first hook. The fixing base includes a vertically arranged fixing base plate and a fixing side plate. The first hook is located on the side of the fixing base plate facing the base plate and is snapped into place with a snap-fit ​​connection on the base plate. The fixing side plate is located on the side of the fixing base plate away from the base plate and is opposite to the display panel. The soft rubber sheet is disposed on the side of the fixing side plate facing the display panel, and the side of the soft rubber sheet facing the display panel forms the support surface.

[0007] Optionally, the fixing base is an integrally molded structure made of rigid material, and the soft rubber sheet is provided with a second hook on the side facing the fixing side plate. The fixing side plate is provided with a slot corresponding to the second hook, and the second hook and the slot are snapped together.

[0008] Optionally, a plurality of baffles are provided on the fourth side of the base plate, and the baffles abut against the side of the fixed side plate away from the soft rubber sheet.

[0009] Optionally, the forward folding portion includes a first folding plate and a second folding plate. One end of the first folding plate is connected to the first side, the second side, and the third side of the base plate. The second folding plate is connected to the first folding plate and is disposed opposite to the base plate. The side of the second folding plate away from the base plate forms the bonding surface. An adhesive strip is provided on the side of the second folding plate facing the base plate, and a light-shielding strip is provided on the side of the second folding plate away from the base plate. The backlight module also includes a diffuser plate. A bending groove is formed between the second folding plate and the first side, the second side, and the third side of the base plate. The three sides of the diffuser plate are respectively inserted into the bending groove.

[0010] Optionally, at least one bridge-shaped member is provided on the fourth side of the base plate portion, the bridge-shaped member protruding from the surface of the base plate portion toward the display panel, and the bridge-shaped member abutting against the diffuser plate.

[0011] Optionally, the portion of the base plate opposite to the bridge-shaped component is hollowed out to form a bridge-shaped groove, and the side of the fixing plate facing the back folding portion is provided with at least one elastic buckle, which is connected to the bridge-shaped groove one by one.

[0012] Optionally, the fixing plate has at least one positioning post on the side facing the back folding part, and the back folding part has a flange hole corresponding to the positioning post, and the positioning post is inserted into the flange hole.

[0013] Optionally, the fixing plate is provided with two guide ribs on the side facing the opposite folding part, and the two guide ribs are respectively located at both ends of the fixing plate, and the guide ribs are inserted into the bending groove.

[0014] This application also discloses a display device, which includes a display panel and a backlight module as described above, wherein the backlight module provides backlight for the display panel.

[0015] The beneficial effects of this application embodiment are as follows: The backlight module in this application embodiment adopts a design that replaces the original middle frame and double-sided adhesive with multiple limiting blocks. Multiple limiting blocks are used to support and buffer the display panel. The contact area between each limiting block and the display panel is small, and the limiting block directly contacts the display panel. There is no need to add an additional double-sided adhesive structure to the limiting block. Therefore, it can avoid the problem of double-sided adhesive falling off and the double-sided adhesive being scraped onto the surface of the display panel during the assembly process, which would cause the display panel to crack. Attached Figure Description

[0016] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0017] Figure 1 This is a schematic diagram of a display device provided in an embodiment of this application;

[0018] Figure 2 This is a three-dimensional schematic diagram of a backplate provided in an embodiment of this application;

[0019] Figure 3 This is a three-dimensional schematic diagram of a backlight module provided in an embodiment of this application;

[0020] Figure 4 This is a three-dimensional schematic diagram of a backlight module without a face frame provided in an embodiment of this application;

[0021] Figure 5 This is a bottom view of a backlight module without a faceplate, provided in an embodiment of this application;

[0022] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0023] Figure 7 yes Figure 4 A magnified view of a section at point B in the middle;

[0024] Figure 8 This is a front view of a backlight module without a faceplate, provided in an embodiment of this application;

[0025] Figure 9 yes Figure 8A magnified view of a portion of the image at point C;

[0026] Figure 10 yes Figure 8 A magnified view of a portion at point D;

[0027] Figure 11 This is a three-dimensional schematic diagram of a limiting block provided in an embodiment of this application;

[0028] Figure 12 yes Figure 5 A magnified view of a section at point E in the middle;

[0029] Figure 13 This is a schematic diagram of the back of a backlight module provided in an embodiment of this application;

[0030] Figure 14 This is a schematic diagram of a face frame provided in an embodiment of this application;

[0031] Figure 15 yes Figure 13 A magnified view of a section at point G in the middle;

[0032] Figure 16 yes Figure 14 A magnified view of a section at point H in the middle;

[0033] Figure 17 yes Figure 13 A magnified view of a section at point J;

[0034] Figure 18 yes Figure 14 A magnified view of the area at point K.

[0035] Among them, 1 is a display device; 10 is a display panel; 20 is a backlight module; 21 is a back plate; 211 is a bottom plate; 211a is a first side; 211b is a second side; 211c is a third side; 211d is a fourth side; 2111 is a bayonet; 2112 is a bridge-shaped component; 2113 is a baffle; 2114 is a bridge-shaped groove; 2115 is a guide tongue; 212 is a forward folding part; 2121 is a first folding plate; 2122 is a second folding plate; 2123 is a bending groove; 2124 is an adhesive strip; 2125 is a light-shielding strip; 213. Backward folding section; 2131. Flanged hole; 22. Face frame; 221. Pressure plate; 222. Fixing plate; 2221. Positioning post; 2222. Guide rib; 2223. Elastic buckle; 2224. Limiting groove; 2225. Soft silicone; 23. Limiting block; 231. Fixing base; 2311. Fixing base plate; 2312. Fixing side plate; 2313. Slot; 232. Soft film; 2321. Second hook; 233. First hook; 24. Diffuser plate; 25. Composite film; 26. Elastic foam. Detailed Implementation

[0036] It should be understood that the terminology, specific structural and functional details used herein are merely for describing particular embodiments and are representative. However, this application may be implemented in many alternative forms and should not be construed as being limited to the embodiments set forth herein.

[0037] Furthermore, unless otherwise explicitly specified and limited, "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0038] like Figure 1 As shown in the figure, this application provides a display device 1, which includes a display panel 10 and a backlight module 20. The backlight module 20 provides backlight for the display panel 10. The display panel 10 is a liquid crystal display (LCD), and the backlight module 20 can be an edge-lit backlight design or a direct-lit backlight design, which is not limited here.

[0039] like Figure 2 , Figure 3 and Figure 4 As shown, the backlight module 20 includes a back plate 21, a front frame 22, and multiple limiting blocks 23. The back plate 21 is an integral structure, including a base plate portion 211, a forward folding portion 212, and a backward folding portion 213. The base plate portion 211 has a first side 211a, a second side 211b, a third side 211c, and a fourth side 211d. The first side 211a and the third side 211c are opposite to each other, and the second side 211b and the fourth side 211d are opposite to each other. The second side 211b is the top side of the base plate, and the fourth side 211d is the ground side of the base plate. The ground side is the side of the display device 1 that is closer to the ground when in use, which can also be understood as the side where the source driving circuit is located in the display device 1. The top side is the side of the display device 1 that is farther away from the ground when in use.

[0040] The forward folding portion 212 is connected to the first side 211a, the second side 211b, and the third side 211c of the base plate portion 211, and the backward folding portion 213 is connected to the fourth side 211d of the base plate portion 211. The backward folding portion 213 and the forward folding portion 212 are located on the front and back sides of the base plate portion 211, respectively. Specifically, the forward folding portion 212 is located on the front side of the base plate portion 211, that is, the side facing the display panel 10, and the forward folding portion 212 is provided with a bonding surface for contacting the display panel 10, while the backward folding portion 213 is located on the back side of the base plate portion 211, that is, the side away from the display panel 10.

[0041] It should be noted that the base plate 211 is generally an irregular structure. The phrase "the back folding part 213 and the front folding part 212 are respectively located on the front and back sides of the base plate 211" is defined by the plane where the intersection of the back folding part 213 and the base plate 211, and the intersection of the front folding part 212 and the base plate 211 are located. The back folding part 213 is located on the back side of this plane, and the front folding part 212 is located on the front side of this plane.

[0042] In addition, the limiting block 23 is located on the front of the base plate 211. Multiple limiting blocks 23 are arranged sequentially at intervals along the length direction of the fourth side 211d of the base plate 211. The limiting block 23 is detachably connected to the base plate 211. The limiting block 23 is provided with a support surface for supporting the display panel 10.

[0043] The face frame 22 is an integral structure, including a connected pressure plate 221 and a fixing plate 222. The fixing plate 222 is disposed opposite to the back folding part 213 and is connected to the back folding part 213. The pressure plate 221 is located on the side of the limiting block 23 away from the bottom plate part 211 and abuts against the front folding part 212.

[0044] In this embodiment, the backlight module 20 uses multiple limiting blocks 23 to replace the original mid-frame and double-sided adhesive design. The multiple limiting blocks 23 support and buffer the display panel 10. Each limiting block 23 has a small contact area with the display panel 10, and the limiting block 23 directly contacts the display panel 10. There is no need to add an additional double-sided adhesive structure to the limiting block 23. Therefore, it can avoid the problem of double-sided adhesive falling off and being scraped onto the surface of the display panel 10 during assembly, which could cause the display panel 10 to crack. This increases product reliability, improves product quality, and saves product costs.

[0045] like Figure 5 and Figure 6As shown in the embodiment of this application, the cross-section of the forward folding portion 212 is F-shaped, specifically including a first folding plate 2121 and a second folding plate 2122 with an integral structure. One end of the first folding plate 2121 is connected to the first side 211a, the second side 211b and the third side 211c of the base plate portion 211. The second folding plate 2122 is perpendicularly connected to the first folding plate 2121, and the second folding plate 2122 is disposed opposite to the base plate portion 211. The side of the second folding plate 2122 away from the base plate portion 211 forms the bonding surface to bond and fix the back of the display panel 10.

[0046] A bending groove 2123 is formed between the second folding plate 2122 and the first side 211a, the second side 211b and the third side 211c of the bottom plate portion 211.

[0047] In this embodiment, the backlight module 20 further includes a diffuser plate 24, a composite film 25, LED beads, and a reflector. The composite film 25 can be bonded to the front side of the diffuser plate 24, i.e., the side of the diffuser plate 24 facing the display panel 10, using double-sided adhesive. The double-sided adhesive can be placed on the top side of the display device 1, and a 3mm wide strip of double-sided adhesive can be used to bond the composite film 25 to prevent the composite film 25 from sliding down due to gravity during use.

[0048] The composite film 25 is a transparent optical film structure. After the diffuser plate 24 diffuses and disperses the light emitted by the LED beads, the composite film 25 receives the light from the diffuser plate 24 and further homogenizes it, achieving uniform brightness display across the entire screen. The reflector is located on the back of the diffuser plate 24, reflecting the light emitted by the LED beads into the diffuser plate 24 to compensate for the insufficient brightness of the LED beads emitting light from the front. At the same time, it reflects light emitted from non-perpendicular directions to the light-incident side of the diffuser plate 24, improving the luminous efficiency of the product.

[0049] Furthermore, the second folding plate 2122 is provided with an adhesive strip 2124 on the side facing the bottom plate 211. The adhesive strip 2124 may be made of silicone and is fixed to the side of the second folding plate 2122 facing the bottom plate 211 by adhesive bonding.

[0050] When assembling the backlight module 20, the diffuser plate 24 and the composite film 25 are first bonded and fixed, and then the two are inserted into the bending groove 2123 according to their orientation for fixation. In this embodiment, by setting an adhesive strip 2124 in the bending groove 2123, the front side of the composite film 25 is prevented from directly contacting the metal edge of the bending groove 2123, which would cause the film to be scratched. At the same time, the gap between the diffuser plate 24 and the bending groove 2123 is reduced, preventing the diffuser plate 24 from shaking in the bending groove 2123 and affecting the stability of the backlight module 20.

[0051] In some embodiments, the adhesive strip 2124 is simultaneously disposed in the regions of the first side 211a, the second side 211b, and the third side 211c of the base plate portion 211 corresponding to the second folding plate 2122. The adhesive strip 2124 simultaneously contacts the three sides of the composite film 25, compressing the composite film 25 and the diffuser plate 24 from three directions, thereby further improving the stability of the composite film 25 and the diffuser plate 24.

[0052] In some embodiments, the second folding plate 2122 is provided with a light-shielding strip 2125 on the side away from the bottom plate portion 211, that is, the light-shielding strip 2125 is located on the bonding surface of the second folding plate 2122 so as to attach the display panel 10 to the bonding surface of the second folding plate 2122.

[0053] like Figure 7 As shown, the light-shielding strip 2125 is a double-sided adhesive strip. The orthographic projection of the double-sided adhesive strip on the base plate 211 is simultaneously located on the first side 211a, the second side 211b, and the third side 211c of the base plate 211. For ease of assembly, the light-shielding strip 2125 can be set in three independent parts and respectively adhered to the second folding plate 2122. Specifically, the two ends of the light-shielding strip 2125 located on the top side have a 7-shaped notch that matches the ends of the light-shielding strips 2125 on the left and right sides to prevent light leakage inside the cavity of the back plate 21.

[0054] In some embodiments, the backlight module 20 further includes an elastic foam 26 disposed on the side of the composite film 25 away from the diffuser plate 24 and located on the ground side of the display device 1, for filling the gap between the composite film 25 and the display panel 10, supporting the display panel 10, and preventing the composite film 25 from wrinkling and causing a water ripple state on the display.

[0055] Moreover, such as Figure 8 and Figure 9 As shown, at least one bridge-shaped member 2112 is provided on the fourth side 211d of the base plate portion 211. The bridge-shaped member 2112 protrudes from the surface of the base plate portion 211 toward the display panel 10. The bridge-shaped member 2112 abuts against the diffuser plate 24. Moreover, the bridge-shaped member 2112 and the limiting block 23 are arranged side by side on the fourth side 211d of the base plate portion 211.

[0056] The bridge-shaped component 2112 is specifically a bridge-shaped structure formed by stamping the bottom plate 211, used to initially limit the diffuser plate 24 in the back plate 21. Compared with the current solution of making a bending limiting structure on the ground side of the back plate 21, the present embodiment sets the bridge-shaped component 2112 on the fourth side 211d of the bottom plate 211. The bridge-shaped component 2112 can be manufactured in one go by the mold, and no large hole is generated on the plane of the bottom plate 211, thereby minimizing the entry of dust into the cavity enclosed by the back plate 21.

[0057] like Figure 10 and Figure 11 As shown, in some embodiments, the limiting block 23 includes a fixing base 231, a soft rubber sheet 232, and a first hook 233. The fixing base 231 includes a vertically arranged fixing base plate 2311 and a fixing side plate 2312. The first hook 233 is located on the side of the fixing base plate 2311 facing the base plate portion 211 and is snapped together with the snap-fit ​​opening 2111 on the base plate portion 211. The snap-fit ​​opening 2111 is a through hole structure, and the first hook 233 is a slotted cylindrical snap-fit ​​structure. The first hook 233 adopts a large-angle insertion and small-angle release scheme to achieve the purpose of easy insertion and difficult release.

[0058] The fixed side plate 2312 is located on the side of the fixed base plate 2311 away from the base plate portion 211 and is opposite to the display panel 10. The soft film 232 is disposed on the side of the fixed side plate 2312 facing the display panel 10. The side of the soft film 232 facing the display panel 10 forms the support surface to cushion the display panel 10.

[0059] In this embodiment, the fixing base 231 is a one-piece molded structure made of a rigid material, specifically hard plastic ABS (Acrylonitrile Butadiene Styrene). The soft film 232 can be made of soft silicone. The soft film 232 has a second hook 2321 on the side facing the fixing side plate 2312, and the fixing side plate 2312 has a corresponding slot 2313. The second hook 2321 and the slot 2313 are snapped together. The second hook 2321 and the slot 2313 can be dovetail-shaped or inverted conical in shape for engagement.

[0060] Furthermore, the fixing base 231 and the soft plastic sheet 232 are manufactured using a two-color injection molding process. During production, the hard plastic fixing base 231 is injection molded first, followed by the soft plastic sheet 232, ensuring that the fixing base 231 and the soft plastic sheet 232 are organically combined into a single unit and do not detach. The fixing base 231 and the first hook 233 can be designed as an integrated structure, reducing installation steps and improving production efficiency.

[0061] In this embodiment, the fixing base 231 is designed as an integrally formed rigid material to prevent deformation caused by the weight of the diffuser plate 24 and the display panel 10. The soft rubber sheet 232 contacts the display panel 10 to prevent the display panel 10 from being scratched or cracked during assembly.

[0062] Correspondingly, such as Figure 12 As shown, the latch 2111 on the base plate 211 is a round hole structure, and the edge is flanged to enhance the stability between the first hook 233 and the base plate 211.

[0063] Moreover, combined Figure 10 and Figure 12 As shown, in addition to the bottom of the limiting block 23 being fixed to the base plate 211 by a snap fastener, the outer side of the limiting block 23 also engages with the base plate 211 for limiting. Specifically, the fourth side 211d of the base plate 211 is provided with multiple baffles 2113, with one limiting block 23 corresponding to one baffle 2113. The baffle 2113 abuts against the side of the fixed side plate 2312 away from the soft rubber sheet 232.

[0064] After the first hook 233 of the limiting block 23 is inserted into the flange slot 2111 of the base plate 211 with positioning function, the upper edge of the limiting block 23 reaches the lower edge of the diffuser plate 24 through the guide corner, pushing the diffuser plate 24 away from the bridge-shaped member 2112 by 0.2-0.3mm. This prevents the lower edge of the diffuser plate 24 from rubbing against the bridge-shaped member 2112 during transportation, thus avoiding the generation of foreign objects that would affect the backlight effect. Meanwhile, the back of the step on the ground side of the limiting block 23 is in close contact with the baffle 2113 formed by folding over the edge of the base plate 211, realizing the vertical positioning function of the limiting block 23.

[0065] During the use of the display device 1, the diffuser plate 24 is supported by the fixing base plate 2311 of multiple limiting blocks 23 and multiple bridge-shaped components 2112, and the display panel 10 is supported by the soft rubber sheet 232 of multiple limiting blocks 23 and the fixing side plate 2312. In addition, the limiting blocks 23 are limited and reinforced by the baffle 2113 to prevent the limiting blocks 23 from loosening and falling off. Since the bridge-shaped components 2112 and the baffle 2113 are both part of the back plate 21 and are an integral metal structure with the back plate 21, the support strength of the display panel 10 and the diffuser plate 24 can be effectively guaranteed, avoiding the risk of deformation due to long-term use.

[0066] In other embodiments, the limiting block 23 can also adopt other design methods, such as designing the limiting block 23 to only contain the fixing seat 231 and the soft film 232, with the fixing seat 231 fixed to the base plate 211 by adhesive bonding; or, the limiting block 23 can be designed to be made by the fitting process of the fixing seat 231 and the soft film 232 or other matching methods; or, the limiting block 23 can adopt an integral structure, etc.

[0067] This application embodiment also provides a specific fixing design for the back plate 21 and the front frame 22, such as Figure 13 , Figure 14 and Figure 15As shown, the fixing plate 222 has at least one positioning post 2221 on the side facing the back folding part 213, and the back folding part 213 has a flange hole 2131 corresponding to the positioning post 2221. The positioning post 2221 is inserted into the flange hole 2131. In this embodiment, at a position slightly to the right of the center of the face frame 22 and the back folding part 213, the plastic positioning post 2221 of the face frame 22 and the metal flange hole 2131 of the back folding part 213 are precisely matched to achieve positioning of the face frame 22 in both the horizontal and thickness directions.

[0068] like Figure 16 As shown, the fixing plate 222 has two guide ribs 2222 on the side facing the folded part 213. The two guide ribs 2222 are located at both ends of the fixing plate 222, and the guide ribs 2222 are inserted into the bending groove 2123. The guide ribs 2222 are U-shaped, and after being inserted into the bending groove 2123, they enable the face frame 22 to be positioned in the thickness direction.

[0069] like Figure 17 As shown, the bottom of the bridge-shaped component 2112 is hollowed out, that is, the part of the bottom plate 211 opposite to the bridge-shaped component 2112 is hollowed out to form a bridge-shaped groove 2114; correspondingly, the fixing plate 222 is provided with at least one elastic buckle 2223 on the side facing the back folding part 213, and the elastic buckle 2223 is connected to the bridge-shaped groove 2114 in a one-to-one buckle connection. During assembly, the elastic buckle 2223 on the face frame 22 slides from the ground side into the guide tongue 2115 of the back folding part 213, and then snaps into the bridge-shaped groove 2114 of the bottom plate 211 for pre-positioning the diffuser plate 24, so as to pull the face frame 22 and fix the face frame 22; in this embodiment, the face frame 22 is restricted from moving in the direction perpendicular to the display panel 10 by the cooperation of the limiting block 23 and the elastic buckle 2223.

[0070] Finally, the two ends of the face frame 22 are fixed to the back folding part 213 by two screws, which further improves the fixing effect of the face frame 22.

[0071] This embodiment of the application employs a dual positioning and dual fixing design, enabling precise positioning and fixation of the face frame 22 at various locations. This ensures both assembly efficiency and improves the stability of backlight efficiency. Furthermore, this embodiment utilizes a fixing method combining elastic clips 2223 and bridge-shaped grooves 2114, avoiding the need for screws in the center of the face frame 22 and enhancing production efficiency.

[0072] like Figure 18As shown, the inner side of the fixing plate 222 is also provided with a plurality of limiting grooves 2224, and soft silicone 2225 is provided in the limiting grooves 2224; wherein, the limiting grooves 2224 are designed with a three-sided sealing method to firmly restrict the soft silicone 2225 in the designated position of the face frame 22. The longer sealing edge of the face frame 22 is a chamfered lip structure, which not only facilitates the face frame 22 to be pushed in from the ground side, but also effectively supports the face frame 22 and the limiting block 23 to restrict the face frame 22 in the designated position.

[0073] During the assembly of the display device 1, before the face frame 22 is assembled, the display panel 10 is supported by the soft rubber sheet 232 of the limiting block 23. After the face frame 22 is assembled, the soft silicone 2225 on the inner side of the face frame 22 further supports the display panel 10, reducing the pressure on the limiting block 23.

[0074] The display device 1 and backlight module 20 designed above have good stability and assembly efficiency, which helps to improve the market competitiveness of the product.

[0075] The above description, in conjunction with specific optional embodiments, provides a further detailed explanation of this application and should not be construed as limiting the specific implementation of this application to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of this application, and all such modifications or substitutions should be considered within the scope of protection of this application.

Claims

1. A backlight module, characterized in that, The back plate comprises a bottom plate part, a forward folding part and a backward folding part, the bottom plate part has a first side, a second side, a third side and a fourth side, the first side is arranged opposite to the third side, the second side is arranged opposite to the fourth side, the forward folding part is connected to the first side, the second side and the third side of the bottom plate part, the backward folding part is connected to the fourth side of the bottom plate part, the backward folding part and the forward folding part are respectively arranged on the front and back surfaces of the bottom plate part, and a fitting surface for fitting with a display panel is arranged on the forward folding part. A plurality of limiting blocks are arranged in sequence and spaced apart along the length direction of the fourth side of the bottom plate part, and the limiting blocks are detachably connected to the bottom plate part, and a supporting surface for supporting the display panel is arranged on the limiting blocks. The face frame comprises a pressing plate and a fixing plate connected to each other, the fixing plate is arranged opposite to the backward folding part and connected to the backward folding part, and the pressing plate is arranged on the side of the limiting block away from the bottom plate part and abuts against the forward folding part. The limiting block comprises a fixing seat, a soft rubber sheet and a first hook, the fixing seat comprises a fixing bottom plate and a fixing side plate arranged vertically, the first hook is arranged on the side of the fixing bottom plate facing the bottom plate part and is buckled to the socket on the bottom plate part, the fixing side plate is arranged on the side of the fixing bottom plate away from the bottom plate part and is opposite to the display panel, the soft rubber sheet is arranged on the side of the fixing side plate facing the display panel, and the side of the soft rubber sheet facing the display panel forms the supporting surface.

2. The backlight module of claim 1, wherein, The fixing seat is an integral structure and is made of a hard material, the side of the soft rubber sheet facing the fixing side plate is provided with a second hook, the fixing side plate is provided with a slot corresponding to the second hook, and the second hook and the slot are buckled to each other.

3. The backlight module of claim 2, wherein, The fourth side of the bottom plate part is provided with a plurality of baffles, and the baffles abut against the side of the fixing side plate away from the soft rubber sheet.

4. The backlight module of claim 2, wherein, The forward folding part comprises a first folding plate and a second folding plate, one end of the first folding plate is connected to the first side, the second side and the third side of the bottom plate part, the second folding plate is connected to the first folding plate, and the second folding plate is arranged opposite to the bottom plate part, and the side of the second folding plate away from the bottom plate part forms the fitting surface.

5. The backlight module of any one of claims 1-4, wherein, The side of the second folding plate facing the bottom plate part is provided with a rubber strip, and the side of the second folding plate away from the bottom plate part is provided with a light shielding strip. The backlight module further comprises a diffusion plate, a bending groove is formed between the second folding plate and the first side, the second side and the third side of the bottom plate part, and three sides of the diffusion plate are respectively inserted into the bending groove. The fourth side of the bottom plate part is provided with at least one bridge-shaped part, the bridge-shaped part protrudes from the surface of the bottom plate part in the direction of the display panel, and the bridge-shaped part abuts against the diffusion plate.

6. The backlight module of claim 5, wherein, The part of the bottom plate part opposite to the bridge-shaped part is hollow to form a bridge-shaped groove, and the side of the fixing plate facing the backward folding part is provided with at least one elastic buckle, and the elastic buckle is buckled to the bridge-shaped groove one by one.

7. The backlight module of claim 6, wherein, ​ 8. The backlight module of claim 1, wherein, The fixed plate is provided with at least one positioning column on the side facing the back folding part, and the back folding part is provided with a flange hole corresponding to the positioning column, and the positioning column is inserted into the flange hole.

9. The backlight module of claim 5, wherein, The fixed plate is provided with two guide ribs on the side facing the back folding part, and the two guide ribs are respectively located at the two ends of the fixed plate, and the guide ribs are inserted into the bending grooves.

10. A display device, characterized by comprising: The display panel is provided with a backlight module as claimed in any one of claims 1-9, and the backlight module provides backlight for the display panel.

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