Backlight module and display device

Abstract

This application discloses a backlight module and a display device. The backlight module includes a housing, an optical component, and a frame. The housing includes a base plate and a side plate, with the side plate disposed on the outer periphery of the base plate. The base plate and the side plate together form an accommodating space. The optical component is located within the accommodating space and is disposed on one side of the base plate along a first direction. The frame includes a first groove, which includes a first sidewall and a snap-fit ​​structure. At least a portion of the side plate is inserted into the first groove. One end of the snap-fit ​​structure along the first direction is connected to the first sidewall, and the other end of the snap-fit ​​structure along the first direction snaps into the side plate. Both ends of the snap-fit ​​structure along a second direction are spaced apart from the first sidewall. The second direction is the extension direction of the side plate, and the first and second directions are perpendicular to each other. This application improves the structural strength of the frame.

Description

Technical Field

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

[0002] Liquid crystal displays (LCDs) are widely used in mobile communications and digital devices due to their advantages such as thinness, energy efficiency, and lack of radiation. Most LCDs are backlit LCDs, consisting of an LCD panel, a backlight module, and a housing. The LCD panel itself does not emit light and requires a light source provided by the backlight module to display images properly; therefore, the backlight module is one of the key components of an LCD device.

[0003] Currently, the frame of the backlight module is a frame structure without any reinforcing structure, resulting in weak structural strength and easy deformation. Summary of the Invention

[0004] The purpose of this application is to provide a backlight module and a display device, which aims to improve the structural strength of the backlight module's frame.

[0005] In a first aspect, this application provides a backlight module, which includes a housing, an optical component, and a frame. The housing includes a base plate and a side plate, with the side plate disposed on the outer periphery of the base plate. The base plate and the side plate together form an accommodating space. The optical component is located within the accommodating space and is disposed on one side of the base plate along a first direction. The frame includes a first groove, which includes a first sidewall and a snap-fit ​​structure. At least a portion of the side plate is inserted into the first groove. One end of the snap-fit ​​structure along the first direction is connected to the first sidewall, and the other end of the snap-fit ​​structure along the first direction is snap-fitted to the side plate. Both ends of the snap-fit ​​structure along a second direction are spaced apart from the first sidewall. The second direction is the extension direction of the side plate, and the first direction and the second direction are perpendicular to each other.

[0006] Based on the same inventive concept, this application also provides a display device including a backlight module of any of the above embodiments.

[0007] Compared with the prior art, the backlight module provided in this application embodiment, by setting a first groove in the frame, the first groove includes a first sidewall and a snap-fit ​​structure, and at least a portion of the side plate is inserted into the first groove, so that at least a portion of the side plate is connected to the frame. One end of the snap-fit ​​structure along a first direction is connected to the first sidewall, and the other end of the snap-fit ​​structure along the first direction is snapped to the side plate. Both ends of the snap-fit ​​structure along a second direction are spaced apart from the first sidewall. The snap-fit ​​structure strengthens the connection stability between the frame and the housing, and improves the structural strength of the frame. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 A schematic diagram of the structure of a display device provided in some embodiments of this application; Figure 2 An exploded view of a display device provided in some embodiments of this application; Figure 3 This is a partial structural schematic diagram of a backlight module provided in some embodiments of this application; Figure 4 for Figure 2 Enlarged diagram of part A in the diagram; Figure 5 for Figure 2 Partial schematic diagram; Figure 6 This is a partial cross-sectional schematic diagram of a backlight module provided in some embodiments of this application; Figure 7 This is a partial cross-sectional schematic diagram of a backlight module provided in some other embodiments of this application; Figure 8 A partial cross-sectional schematic diagram of a backlight module provided in some embodiments of this application; Figure 9 Partial exploded view of a backlight module provided in other embodiments of this application; Figure 10 for Figure 9 A schematic diagram of the backlight module in the assembly state; Figure 11 for Figure 10 A partial schematic diagram showing the backlight module located at another angle; Figure 12 This is a partial structural schematic diagram of a backlight module provided in some other embodiments of this application.

[0010] Explanation of reference numerals in the attached figures: 100. Backlight module; 10. Housing; 11. Base plate; 12. Side plate; 121. Slot; 122. Second inclined surface; 123. Support wall; 124. Rib; 125. Support body; 13. Accommodating space; 20. Optical component; 30. Frame; 31. First groove; 311. Third opening; 32. First side wall; 33. Snap-fit ​​structure; 331. Hook; 332. First inclined surface; 34. Receiving part; 341. First opening; 342. Second opening; 35. Adhesive support rib; 36. Second side wall; 37. Top wall; 38. Connecting part; X, First direction; Y, Second direction; Z, Third direction; 1000. Display device; 200. Cover plate; 300. Display panel. Detailed Implementation

[0011] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0012] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0013] In this application, the reference to "embodiment" means that a specific 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 mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0014] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0015] Figure 1 A schematic diagram of the structure of a display device provided in some embodiments of this application; Figure 2 An exploded view of a display device provided in some embodiments of this application; Figure 3 This is a partial structural schematic diagram of a backlight module provided in some embodiments of this application.

[0016] Please refer to the following: Figures 1-3 In a first aspect, this application provides a backlight module 100, which includes a housing 10, an optical component 20, and a frame 30. The housing 10 includes a base plate 11 and a side plate 12. The side plate 12 is disposed on the outer periphery of the base plate 11, and the base plate 11 and the side plate 12 enclose a receiving space 13. The optical component 20 is located in the receiving space 13 and is disposed on one side of the base plate 11 along a first direction X. The frame 30 includes a first groove 31, which includes a first side wall 32 and a snap-fit ​​structure 33. At least a portion of the side plate 12 is inserted into the first groove 31. One end of the snap-fit ​​structure 33 along the first direction X is connected to the first side wall 32, and the other end of the snap-fit ​​structure 33 along the first direction X is snap-fitted to the side plate 12. Both ends of the snap-fit ​​structure 33 along the second direction Y are spaced apart from the first side wall 32. The second direction Y is the extension direction of the side plate 12, and the first direction X and the second direction Y are perpendicular to each other.

[0017] The backlight module 100 can be a bottom-emitting structure. For example, the optical component 20 may include a diffuser plate and an optical film group located above the diffuser plate. Multiple point light sources are provided on the side of the bottom plate 11 facing the accommodating space 13. The light emitted by the point light sources is emitted directly toward the diffuser plate and mixed by the diffuser plate to form a uniform surface light source. Alternatively, the backlight module 100 can also be a side-emitting structure. For example, the optical component 20 includes a light guide plate and an optical film group located above the light guide plate. The light source can be fixed on the side plate 12 of the housing 10. The light guide plate is located above the bottom plate 11 and is used to convert the side-incident light into a uniform surface light emitted from the front.

[0018] The housing 10 can be a die-cast component, for example, integrally formed from aluminum-magnesium alloy or zinc alloy using a die-casting process. The die-cast housing 10 offers good structural strength and dimensional stability. Alternatively, the housing 10 can also be a stamped component, for example, formed from galvanized steel sheet, stainless steel, or aluminum sheet using a progressive stamping die. The stamped housing 10 is lower in cost and lighter in weight, making it suitable for mass production.

[0019] The frame 30 is made of an elastic material, such as rubber or silicone. The frame 30 can be black, serving as the middle frame of the backlight module 100. The black frame 30 has a lower reflectivity, and compared to the structure of a traditional metal sheet frame, it can reduce stray light reflection in the inner edge area of ​​the backlight module 100, thereby reducing undesirable optical phenomena such as edge bright spots, light leakage, or halos. Especially for narrow-bezel or full-screen display devices 1000, where the optically effective area of ​​the backlight module 100 almost extends to the edge of the frame 30, the black frame 30 can absorb stray light leaking from the edges of the light guide plate or optical film, resulting in more uniform and cleaner edge lighting for the display panel 300.

[0020] The first groove 31 can be continuously arranged along the second direction Y, forming a complete groove structure around the outer periphery of the entire housing 10. Alternatively, there can be multiple first grooves 31, which are spaced apart along the second direction Y. The first sidewall 32 of the first groove 31 can be located on the outer side of the first groove 31, that is, on the side away from the receiving space 13, which facilitates the engagement of the snap-fit ​​structure 33 with the side plate 12 of the housing 10 from the outside, and also makes it easier to observe the snap-fit ​​status during assembly. A portion of the side plate 12 can be inserted into the first groove 31, or the entire side plate 12 can be inserted into the first groove 31, to limit the movement of the side plate 12 and the frame 30 in a direction parallel to the bottom plate 11.

[0021] The snap-fit ​​structure 33 is part of the first groove 31. The first groove 31 may have a notch in the first sidewall 32 to accommodate the snap-fit ​​structure 33. The upper end of the snap-fit ​​structure 33 connects to the upper end of the corresponding notch in the first sidewall 32, and the lower end of the snap-fit ​​structure 33 snaps into the side plate 12. The left and right sides of the snap-fit ​​structure 33 are spaced apart from the left and right sides of the corresponding notch in the first sidewall 32, thus allowing for disconnection. A hook 331 can be provided on the snap-fit ​​structure 33, and a slot 121 can be provided on the side plate 12 to achieve snap-fit ​​between the snap-fit ​​structure 33 and the side plate 12. Alternatively, a slot 121 can be provided on the snap-fit ​​structure 33, and a hook 331 can be provided on the side plate 12.

[0022] The backlight module 100 provided in this application embodiment has a first groove 31 provided in the frame 30. The first groove 31 includes a first sidewall 32 and a snap-fit ​​structure 33. At least a portion of the side plate 12 is inserted into the first groove 31, so that at least a portion of the side plate 12 is connected to the frame 30. One end of the snap-fit ​​structure 33 along the first direction X is connected to the first sidewall 32, and the other end of the snap-fit ​​structure 33 along the first direction X is snapped to the side plate 12. Both ends of the snap-fit ​​structure 33 along the second direction Y are spaced apart from the first sidewall 32. The snap-fit ​​structure 33 strengthens the connection stability between the frame 30 and the housing 10 and improves the structural strength of the frame 30. Moreover, there is no need to provide a through hole in the housing 10 to accommodate the space 13, and no need to apply additional anti-light leakage tape, simplifying the process and reducing costs. In addition, the snap-fit ​​between the frame 30 and the housing 10 does not increase the sidewall width of the display device 1000, which facilitates the achievement of a narrow bezel effect for the display device 1000.

[0023] In some embodiments, a slot 121 is provided on the side of the side plate 12 away from the accommodating space 13, and a hook 331 is provided on the side of the snap-fit ​​structure 33 facing the slot 121, and the hook 331 snaps into the slot 121.

[0024] A slot 121 is provided on the outer side of the side plate 12, and a secure connection is achieved between the hook 331 of the snap-fit ​​structure 33 and the slot 121 of the side plate 12. The slot 121 can be a rectangular or trapezoidal recess formed directly during die casting or stamping, or it can be a through groove that penetrates the side plate 12.

[0025] When the side plate 12 is inserted into the first groove 31, the gaps at both ends of the snap-fit ​​structure 33 along the second direction Y provide elastic deformation space, allowing the snap-fit ​​structure 33 to open slightly outward. The hook 331 slides along the outer surface of the side plate 12 until it falls into the slot 121, preventing the glue frame 30 from coming off the housing 10. This not only facilitates the smooth snap-fit ​​but also eliminates the need for through holes or screw holes in the housing 10 to reach the receiving space 13. Therefore, the receiving space 13 remains sealed, eliminating the need for additional anti-light leakage tape, which simplifies the assembly process and reduces material costs.

[0026] In some embodiments, the hook 331 is provided with a first inclined surface 332 on the side facing the accommodating space 13; in the direction from the bottom plate 11 to the side plate 12, the first inclined surface 332 is inclined on the side facing the accommodating space 13.

[0027] The first inclined surface 332 is provided on the inner side of the hook 331. In the direction from the base plate 11 to the side plate 12, the first inclined surface 332 is inclined towards the accommodating space 13 because when viewed from the side plate 12 away from the base plate 11 (i.e., vertically upwards), the first inclined surface 332 gradually slopes inwards towards the accommodating space 13. In other words, the inner side of the hook 331 is not a vertical plane, but an inclined surface that gradually slopes inwards from bottom to top.

[0028] When the side plate 12 is inserted into the first groove 31, the first inclined surface 332 can serve as a guide surface for assembly, guiding the hook 331 to slide smoothly into the groove 121, reducing insertion resistance, and improving the smoothness of assembly without weakening the snap-fit ​​stability.

[0029] In some embodiments, the side plate 12 is provided with a second inclined surface 122, which is located on the side of the slot 121 away from the bottom plate 11; in the direction from the bottom plate 11 to the side plate 12, the second inclined surface 122 is inclined toward the side of the accommodating space 13.

[0030] In other words, when viewed from below, the second inclined surface 122 gradually tilts toward the interior of the accommodating space 13. As the side plate 12 is inserted into the first groove 31, the second inclined surface 122 can provide a guide surface for the hook 331 of the frame 30, so that the hook 331 can fall into the groove 121 more smoothly and accurately.

[0031] The second inclined surface 122 can also cooperate with the first inclined surface 332 to further reduce the resistance of the hook 331 entering the slot 121.

[0032] Optionally, the second inclined surface 122 and the first inclined surface 332 have the same inclination angle relative to the first direction X. When the side plate 12 is inserted into the first groove, the first inclined surface 332 and the second inclined surface 122 can contact each other, and the hook 331 can fall into the slot 121 more smoothly.

[0033] Figure 4 for Figure 2 Enlarged schematic diagram of part A in the diagram.

[0034] like Figure 4 As shown, in some embodiments, the width of the second inclined surface 122 along the second direction Y is greater than the width of the slot 121 along the second direction Y, and the two ends of the second inclined surface along the second direction Y respectively extend beyond the two ends of the slot 121 along the second direction Y.

[0035] Along the second direction Y, the second inclined surface 122 is wider than the slot 121, and the two ends of the second inclined surface 122 are located on the outer sides of the two ends of the slot 121, respectively.

[0036] During assembly, the hook 331 may slightly deviate in the second direction Y due to positioning errors or manufacturing tolerances when sliding along the side plate 12. If the second inclined surface 122 and the slot 121 are the same width in the second direction Y, the hook 331 may hit an area of ​​the side plate 12 where no inclined surface is provided, causing jamming or scratches. The wider second inclined surface 122 can provide a wider guide area for the hook 331, allowing the hook 331 to fall smoothly into the slot 121.

[0037] In some embodiments, the side of the hook 331 facing away from the base plate 11 abuts against the side of the slot 121 facing the base plate 11.

[0038] When the side plate 12 is inserted into the first groove 31, the hook 331 is first pushed open by the side plate 12. After the hook 331 slides to the position of the groove 121, the locking structure 33 elastically resets, and the hook 331 enters the groove 121. At this time, the side of the hook 331 away from the bottom plate 11 abuts against the side of the groove 121 facing the bottom plate 11, forming a surface contact, which can further restrict the movement of the frame 30 along the first direction X, and further improve the structural strength of the frame 30.

[0039] Figure 5 for Figure 2 A partial schematic diagram.

[0040] like Figure 5 As shown, in some embodiments, the side plate 12 includes a support wall 123 and a rib 124. The support wall 123 is inserted into the first groove 31. The frame 30 is also provided with a receiving portion 34, and the rib 124 is inserted into the receiving portion 34. The snap-fit ​​structure 33 and the receiving portion 34 are spaced apart along the second direction Y.

[0041] The support wall 123 is the main body of the side plate 12. It is inserted into the first groove 31 of the frame 30 along the first direction X, and cooperates with the first groove 31 to provide basic fixation and limiting. The rib 124 is a strip-shaped or block-shaped structure that protrudes upward from the surface of the support wall 123, or the rib 124 can be an independent structure of the support wall 123. The rib 124 can extend a certain length along the second direction Y, or it can be discretely distributed. The corresponding receiving part 34 on the frame 30 can be a groove, through hole, or slot 121, the shape and size of which match the rib 124 to receive the rib 124. When the side plate 12 is inserted into place, the rib 124 slides into the receiving part 34 and fits into the receiving part 34.

[0042] Because the snap-fit ​​structure 33 and the receiving portion 34 are spaced apart along the second direction Y, that is, they are staggered from each other in the extending direction of the side plate 12 and do not overlap, the snap-fit ​​structure 33 and the receiving portion 34 perform different functions. The snap-fit ​​structure 33 is responsible for providing a limit in the first direction X to prevent the frame 30 from coming off the housing 10, while the cooperation between the receiving portion 34 and the protruding rib 124 mainly provides a limit and anti-torsional effect in the second direction Y to prevent relative sliding or rotation between the housing 10 and the frame 30 along the extending direction of the side plate 12. The snap-fit ​​structure 33 and the receiving portion 34 are spatially staggered along the second direction, which avoids structural interference and disperses the stress points, further improving the structural strength of the frame 30.

[0043] Figure 6 This is a partial cross-sectional schematic diagram of a backlight module provided in some embodiments of this application.

[0044] like Figure 6 As shown, in some embodiments, the receiving portion 34 extends through the frame 30 along the first direction X, and a first opening 341 is provided at the end of the receiving portion 34 away from the bottom plate 11, through which the protruding rib 124 is exposed.

[0045] The first opening 341 is located at the upper end of the receiving portion 34. The upper surface of the receiving portion is substantially flush with the upper end of the first opening 341. Therefore, after the receiving portion 34 is exposed through the first opening 341, the upper surface of the receiving portion 34 is substantially flush with the upper surface of the frame 30. The display device 1000 including the backlight module 100 also includes a display panel 300 and a cover plate 200. The cover plate is located on the side of the frame 30 facing away from the housing 10, and the display panel 300 is located on the side of the cover plate 200 facing the optical component 20, and the display panel 300 is located within the receiving space. The cover plate 200 can be connected to the rib 124 and the frame 30 simultaneously using tape or glue, enhancing the adhesive strength between the backlight module 100 and the cover plate 200.

[0046] Figure 7 This is a partial cross-sectional schematic diagram of a backlight module provided in some other embodiments of this application.

[0047] like Figure 7 As shown, in some embodiments, the surface of the protruding rib 124 exposed through the first opening 341 is provided with a dotted adhesive support rib 35; and / or, the surface of the adhesive frame 30 facing away from the base plate 11 is provided with a dotted adhesive support rib 35.

[0048] The adhesive support rib 35 can be provided only on the upper surface of the rib 124, or only on the upper surface of the frame 30, or both the rib 124 and the frame 30 can be provided with adhesive support rib 35.

[0049] The adhesive support rib can be a raised strip or a dot-like structure. When adhesive needs to be applied to the raised portion between the cover plate 200 and the adhesive frame 30 and the raised rib 124, the adhesive support rib 35 plays a role in controlling the adhesive layer thickness and preventing adhesive overflow. Without the adhesive support rib 35, the adhesive may be completely squeezed out when the cover plate 200 is pressed, resulting in localized adhesive shortages or uneven bonding thickness. However, the adhesive support rib 35 in this embodiment creates a small, uniform gap between the cover plate 200 and the adhesive frame 30 or the raised rib 124, allowing the adhesive to fill the gap. This ensures sufficient adhesive layer thickness to achieve good bonding strength while preventing the adhesive from being excessively squeezed and overflowing into non-bonded areas. At the same time, the support rib also increases the contact area between the adhesive and the bonding interface, improving the anchoring effect.

[0050] In some embodiments, there are multiple ribs 124, which are spaced apart along the circumference of the base plate 11. This can improve the structural strength of the frame 30 and enhance the connection stability between the frame 30 and the housing 10.

[0051] Figure 8 This is a partial cross-sectional schematic diagram of a backlight module provided in some embodiments of this application.

[0052] like Figure 8 As shown, in some embodiments, the first groove 31 further includes a second sidewall 36 disposed opposite to the first sidewall 32, and a top wall 37 connecting the first sidewall 32 and the second sidewall 36, with the receiving portion 34 disposed on the top wall 37.

[0053] The first sidewall 32, the top wall, and the second sidewall 36 together form a groove with three walls, the opening of which faces the bottom plate 11, allowing the side plate 12 to be inserted. This provides constraint and limitation for the side plate in the second direction Y and in the direction perpendicular to the first sidewall 32, further enhancing the stability of the connection between the housing 10 and the frame 30.

[0054] The receiving part 34 is set on the top wall 37. Since the top wall is located at the top of the first groove 31, and the receiving part 34 is used to receive the protruding rib 124 on the side plate 12, when the protruding rib 124 is inserted into the receiving part 34, the exposed end of the protruding rib is located on the top surface of the frame 30, so that the cover plate 200 can be bonded to the exposed end surface of the protruding rib 124 and the surface of the top wall 37 of the frame 30 at the same time, making the bonding interface smoother and more continuous.

[0055] In some embodiments, the rib 124 is provided on the side of the support wall 123 away from the bottom plate 11.

[0056] When the side plate 12 is inserted into the first groove 31, the support wall 123 enters the gap between the first side wall 32 and the second side wall 36, and the protruding rib 124 located at the upper end of the support wall 123 moves toward the top wall 37 and is finally inserted into the receiving part 34 provided on the top wall.

[0057] Since the rib 124 is located at the top of the support wall 123, it acts as a limit stop. When the rib 124 is fully inserted into the receiving part 34, the support wall 123 can no longer move upward, thereby controlling the insertion depth of the side plate 12 and avoiding damage to the snap-fit ​​structure 33 or the optical component 20 due to excessive insertion.

[0058] For the die-cast or stamped housing 10, it is relatively easy to form the raised rib 124 at the top of the support wall 123. For example, the die-casting mold can directly form the protrusion on the end face, while the stamped part can be achieved through flanging or embossing processes. For the frame 30, providing a receiving part 34 on the top wall 37 also facilitates mold forming.

[0059] In some embodiments, the support wall 123 and the first groove 31 are respectively arranged around the circumference of the base plate 11.

[0060] The support wall 123 can extend continuously along the entire outer periphery of the base plate 11, forming a closed annular structure. Similarly, the first groove 31 on the frame 30 is also continuously arranged along the same annular path, making the first groove 31 a surrounding annular groove. When both the support wall 123 and the first groove 31 are arranged around the periphery, the support wall 123 of the side plate 12 can be completely inserted into the first groove 31, and is almost completely wrapped and constrained by the frame 30. The surrounding arrangement also helps to prevent light leakage. Since the support wall 123 and the first groove 31 fit tightly in the circumferential range, it is difficult for light inside the accommodating space 13 to leak out from the seam between the housing 10 and the frame 30, and no additional light-shielding tape is needed. At the same time, the continuous first groove 31 also provides a complete shielding path, and the edge of the black frame 30 can better absorb stray light, further improving the optical uniformity of the edge of the display panel 300.

[0061] Figure 9 Partial exploded view of a backlight module provided in other embodiments of this application; Figure 10 for Figure 9 A schematic diagram of the backlight module in the assembly state.

[0062] Please refer to the following: Figure 9 and Figure 10 In other embodiments, the support wall 123 and the rib 124 are staggered along the second direction Y; the frame 30 also includes a connecting part 38, which is disposed on one side of the first groove 31 along the second direction Y, and the receiving part 34 is located on the side of the connecting part 38 away from the receiving space 13, and the receiving part 34 is provided with a second opening 342 on the side away from the receiving space.

[0063] The protruding rib 124 and the supporting wall 123 do not extend along the second direction Y, but are offset by a certain distance, that is, the projection of the protruding rib 124 along the second direction Y does not overlap with the projection of the supporting wall 123 along the second direction. The supporting wall 123 and the protruding rib 124 have a certain distance between them along the direction perpendicular to the side plate 12.

[0064] The connecting portion 38 is connected to the first groove 31 along the second direction Y. The receiving portion 34 is located outside the connecting portion 38, and a second opening 342 is provided on the outside of the receiving portion 34. The receiving portion can be a through groove structure that passes through the connecting portion 38 along the first direction X and has a second opening 342, or the receiving portion 34 can also be an L-shaped groove structure.

[0065] During the assembly of the housing 10 and the frame 30, the support wall 123 is inserted into the first groove 31 and simultaneously into the receiving portion 34. A first opening 341 can also be provided on the side of the receiving portion opposite to the bottom plate 11, facilitating simultaneous bonding of the support wall 123 and the frame 30 to the cover plate 200. The height of the support wall 123 along the first direction X can be the same as the height of the rib 124 along the first direction X, or the height of the rib 124 along the first direction X can be slightly greater than the height of the support wall 123 along the first direction X.

[0066] This embodiment of the application, through the staggered arrangement of the support wall 123 and the rib 124, and by providing a receiving portion 34 with a second opening 342 on the connecting portion 38, moves the receiving portion outward, reducing the difficulty of mold forming. Furthermore, the second opening 342 can also be used to drain excess glue or accumulated dust. When bonding the cover plate 200, if the amount of glue applied is slightly excessive, the excess glue can overflow from the second opening 342 without flowing into the receiving space 13 and contaminating the optical component 20. Moreover, since the rib 124 and the receiving portion 34 can protrude outward without occupying the width of the receiving space 13, it is beneficial for the narrow bezel design of the display device 1000.

[0067] Figure 11 for Figure 10 A partial schematic diagram showing the backlight module located at another angle.

[0068] like Figure 11 As shown, in some embodiments, the first groove 31 further includes a top wall 37 connected to the first side wall 32, the top wall 37 being disposed on the side of the first side wall 32 away from the bottom plate 11; the first groove 31 is provided with a third opening 311, the third opening 311 being disposed opposite to the first side wall 32, the third opening being located on the side of the first side wall 32 facing the accommodating space 13; the surface of the support wall 123 facing the accommodating space 13 is flush with the surface of the connecting portion 38 facing the accommodating space.

[0069] The top wall 37 of the first groove 31 is located on the side of the first side wall 32 facing away from the bottom plate 11, i.e., at the upper end of the first side wall. Simultaneously, the first groove 31 has a third opening 311, which is opposite to the first side wall 32 and located on the side of the first side wall facing the receiving space 13. In other words, the first groove 31 is not a four-sided closed groove, but rather has a third opening 311 on its inner side facing the receiving space 13, making the first groove 31 an L-shaped or right-angled structure. The first side wall 32 limits the outer side of the support wall 123, and the top wall 37 limits the top of the support wall. This structure eliminates the need for a second side wall 36 in the first groove 31, thus simplifying the cross-sectional shape of the frame 30. When the support wall 123 is inserted into the first groove 31, it is mainly positioned and limited by the first side wall 32 and the top wall 37, while the side of the support wall 123 facing the receiving space 13 is directly exposed to the receiving space. Since there is no second sidewall 36, the width of the entire first groove 31 can be made narrower, which helps to reduce the bezel size of the backlight module 100. Moreover, the surface of the support wall 123 facing the accommodating space 13 is flush with the surface of the connecting part 38 facing the accommodating space, which not only ensures the structural strength of the housing 10, but also further reduces the narrow bezel of the backlight module 100. At the same time, the presence of the third opening 311 also provides greater tolerance for assembly. When the side plate 12 is inserted into the frame 30, it does not need to be precisely aligned with a narrow gap, but can enter the area inside the first sidewall 32 more freely.

[0070] In some embodiments, there are multiple connecting portions 38 and first grooves 31, and the connecting portions 38 and first grooves 31 are alternately arranged along the circumference of the frame 30.

[0071] A first groove 31 is connected to a connecting part 38, and another first groove is connected to a first connecting part, and so on. A snap-fit ​​structure 33 is located on the first side wall 32 of the first groove 31, responsible for providing anti-detachment force along the first direction X. The first groove 31 also provides restraint for the support wall 123 in the second direction Y and in the direction pointing towards the receiving space 13. The protruding rib 124 is located in the receiving part 34 corresponding to the connecting part 38. The connecting part can restrain the protruding rib 124 in a direction away from the receiving space 13, making the connection between the frame 30 and the side plate 12 more secure. Furthermore, the connecting part 38 and the first groove 31 are alternately arranged along the circumference of the frame 30, which makes the force distribution between the frame and the side plate 12 more uniform, further improving the structural strength of the frame 30.

[0072] Figure 12 This is a partial structural schematic diagram of a backlight module provided in some other embodiments of this application.

[0073] like Figure 12As shown, in some embodiments, the side plate 12 includes a support body 125 and a support wall 123. The support body 125 is connected to the bottom plate 11, and the support wall 123 is disposed on the side of the support body 125 away from the bottom plate 11. The support wall 123 is inserted into the first groove 31, and the snap-fit ​​structure 33 snaps into the support wall 123. The projection of the support body 125 along the third direction Z does not overlap with the projection of the frame 30 along the third direction Z. The third direction Z is the thickness direction of the side plate 12, and the third direction is perpendicular to the first direction X and the second direction Y, respectively.

[0074] The support body 125 is the lower half of the side plate 12, and the support wall 123 is located on the upper side of the support body 125, which is the upper half of the side plate 12. Since the projection of the support body 125 along the third direction Z does not overlap with the projection of the frame 30 along the third direction, the support body 125 is not inserted into the frame 30.

[0075] Since the frame does not extend to the support body 125, in the first direction X, the frame 30 is only located within the height range of the support wall 123, and the outer periphery of the support body 125 is not covered by the frame 30. This frees up space around the support body 125, facilitating the design and arrangement of other structures. For example, heat sinks, circuit boards, wiring channels, or electromagnetic shielding covers can be installed on the outside of the support body 125 without interfering with the frame 30. Because the frame does not extend to the outside of the support body 125, these structures can be arranged close to the outer surface of the support body, or even directly fixed to the support body 125 using thermally conductive adhesive or screws, thereby improving heat dissipation efficiency or the reliability of electrical connections. Similarly, on the inner side of the support body 125, i.e., the side facing the accommodating space 13, reflectors or other optical elements can be arranged more flexibly. Since the frame 30 does not occupy the inner space in this area, the reflector can extend directly to the inner surface of the support body 125, maximizing the reflective area and reducing edge light leakage.

[0076] In this embodiment, the projection of the support body 125 along the third direction Z does not overlap with the projection of the frame 30 along the third direction, and the frame does not occupy the space below the support wall 123, which facilitates the design of other structures and saves space in the display device 1000.

[0077] In some embodiments, the thickness of the frame 30 along the first direction X is greater than or equal to 2.4 mm.

[0078] For example, the thickness of the frame 30 along the first direction X can be 2.6mm, 2.65mm, 2.7mm, 2.75mm, 2.8mm, 2.85mm, 2.9mm, 2.95mm or 3mm, etc.

[0079] In this embodiment, the thickness of the frame 30 along the first direction X is suggested to be greater than or equal to 2.4 mm, which can ensure the structural strength of the frame 30 and prevent light leakage from the display device 1000.

[0080] In some embodiments, there are multiple snap-fit ​​structures 33, which are spaced apart along the circumference of the base plate 11. This can improve the connection stability between the frame 30 and the housing 10 along the circumference, and make the structural strength of the frame more uniform along the circumference.

[0081] Based on the same inventive concept, this application also provides a display device 1000, including a backlight module 100 of any of the above embodiments. The display device 1000 provided according to the embodiments of this application has the same technical effects because it adopts the backlight module 100 provided in the embodiments of this application, and will not be described again here.

[0082] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A backlight module, characterized in that, include: The housing includes a bottom plate and a side plate, the side plate being disposed on the outer periphery of the bottom plate, the bottom plate and the side plate enclosing and forming an accommodating space; An optical component is located within the accommodating space and is disposed on one side of the base plate along the first direction; The frame includes a first groove, the first groove including a first sidewall and a snap-fit ​​structure, at least a portion of the side plate is inserted into the first groove, one end of the snap-fit ​​structure along a first direction is connected to the first sidewall, and the other end of the snap-fit ​​structure along the first direction is snapped to the side plate; both ends of the snap-fit ​​structure along a second direction are spaced apart from the first sidewall; wherein, the second direction is the extension direction of the side plate, and the first direction and the second direction are perpendicular to each other.

2. The backlight module according to claim 1, characterized in that, The side panel is provided with a slot on the side away from the accommodating space, and the snap-fit ​​structure is provided with a hook on the side facing the slot, and the hook engages with the slot.

3. The backlight module according to claim 2, characterized in that, The hook has a first inclined surface on the side facing the accommodating space; in the direction from the base plate to the side plate, the first inclined surface is inclined towards the side facing the accommodating space.

4. The backlight module according to claim 2, characterized in that, The side plate is provided with a second inclined surface, which is located on the side of the slot away from the bottom plate; in the direction from the bottom plate to the side plate, the second inclined surface is inclined toward the accommodating space.

5. The backlight module according to claim 4, characterized in that, The width of the second inclined surface along the second direction is greater than the width of the card slot along the second direction, and the two ends of the second inclined surface along the second direction respectively extend beyond the two ends of the card slot along the second direction.

6. The backlight module according to claim 2, characterized in that, The side of the hook away from the base plate abuts against the side of the slot facing the base plate.

7. The backlight module according to claim 1, characterized in that, The side plate includes a support wall and a rib. The support wall is inserted into the first groove. The frame is also provided with a receiving part, and the rib is inserted into the receiving part. The snap-fit ​​structure and the receiving part are spaced apart along the second direction.

8. The backlight module according to claim 7, characterized in that, The receiving portion extends through the rubber frame along the first direction, and a first opening is provided at the end of the receiving portion opposite to the bottom plate, through which the protruding rib is exposed.

9. The backlight module according to claim 8, characterized in that, The protruding rib is provided with a dotted adhesive support rib on the surface exposed through the first opening; and / or, the adhesive frame is provided with the dotted adhesive support rib on the surface opposite to the base plate.

10. The backlight module according to claim 7, characterized in that, The first tank also includes a second sidewall disposed opposite to the first sidewall, and a top wall connecting the first sidewall and the second sidewall, with the receiving portion disposed on the top wall.

11. The backlight module according to claim 10, characterized in that, The ribs are located on the side of the support wall opposite to the base plate.

12. The backlight module according to claim 10, characterized in that, The supporting wall and the first groove are respectively arranged around the circumference of the bottom plate.

13. The backlight module according to claim 7, characterized in that, The supporting wall and the protruding rib are offset along the second direction; The frame also includes a connecting part, which is disposed on one side of the first groove along the second direction. The receiving part is located on the side of the connecting part away from the receiving space, and the receiving part has a second opening on the side away from the receiving space.

14. The backlight module according to claim 13, characterized in that, The first tank also includes a top wall connected to the first side wall, the top wall being disposed on the side of the first side wall facing away from the bottom plate; The first groove is provided with a third opening, which is disposed opposite to the first sidewall and is located on the side of the first sidewall facing the accommodating space; The surface of the supporting wall facing the accommodating space is flush with the surface of the connecting portion facing the accommodating space.

15. The backlight module according to claim 13, characterized in that, There are multiple connecting parts and multiple first grooves, and the connecting parts and the first grooves are alternately arranged along the circumference of the adhesive frame.

16. The backlight module according to claim 1, characterized in that, The side plate includes a support body and a support wall. The support body is connected to the bottom plate. The support wall is disposed on the side of the support body away from the bottom plate. The support wall is inserted into the first groove. The snap-fit ​​structure snaps into the support wall. The projection of the support body along a third direction does not overlap with the projection of the frame along the third direction; wherein, the third direction is the thickness direction of the side plate, and the third direction is perpendicular to the first direction and the second direction respectively.

17. The backlight module according to claim 16, characterized in that, The thickness of the frame along the first direction is greater than or equal to 2.4 mm.

18. A display device, characterized in that, Includes the backlight module according to any one of claims 1-17.

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