Backlight module and display device

Abstract

The invention discloses a display device. The display device comprises a backlight module and a display module located on the light emitting side of the backlight module. The backlight module comprises a back frame and an optical film set. The back frame comprises a bottom plate and a plurality of connecting plates connected to the same side of the bottom plate, the connecting plates surround the periphery of the bottom plate so as to form a containing groove in the back frame, a sliding groove is formed in the side, close to the containing groove, of at least part of the connecting plates, and a groove opening of the sliding groove faces the containing groove; the optical film set is arranged in the containing groove and clamped in the sliding groove. Wherein the display module is arranged on the back frame and located on the side, away from the bottom plate, of the optical film set, the back frame further comprises at least one fixing piece arranged on the connecting plate, and the optical film set further comprises at least one connecting piece connected with the at least one fixing piece in a matched mode. According to the display device, undesirable phenomena caused by friction among the middle frame, the back frame, the optical film set and the like can be avoided, and the yield of the display device is improved.

Description

[0001] This divisional application is a divisional application based on the Chinese patent application with application number 202310296917.X, application date March 22, 2023, and invention name “Display Device”. Technical Field

[0002] The present invention relates to the field of display technology, and in particular to a backlight module and a display device. Background Art

[0003] At present, in the backlight module of the display device, the back frame and the middle frame are generally used to fix the optical film and the backlight source. Among them, the back frame can fix and support the optical film and the backlight source, while the middle frame can prevent the optical film from jumping off and support the display screen.

[0004] However, the middle frame is expensive and easily deformed during assembly, resulting in poor flatness. This can cause uneven display when the display is mounted on the middle frame. In addition, the middle frame is prone to friction with the back frame and optical film, leading to a decrease in yield. Summary of the Invention

[0005] The embodiments of the present invention provide a backlight module and a display device, which can reduce costs and improve product yield.

[0006] An embodiment of the present invention provides a display device, comprising a backlight module and a display module located on a light-emitting side of the backlight module;

[0007] The backlight module includes:

[0008] A back frame, comprising a bottom plate and a plurality of connecting plates connected to the same side of the bottom plate, wherein the plurality of connecting plates surround the bottom plate to form a receiving slot in the back frame, and at least some of the connecting plates are provided with a sliding slot on a side adjacent to the receiving slot, with the slot opening of the sliding slot facing the receiving slot;

[0009] An optical film assembly is disposed in the receiving groove and is clamped in the sliding groove;

[0010] Wherein, the display module is arranged on the back frame and located on the side of the optical film group away from the bottom plate. The back frame also includes at least one fixing member arranged on the connecting plate, and the optical film group also includes at least one connecting member that cooperates with at least one fixing member.

[0011] In one embodiment of the present invention, the plurality of connecting plates include a first connecting plate, and the sliding groove includes a first sliding groove provided on a side of the first connecting plate close to the accommodating groove;

[0012] Wherein, the fixing member includes a protrusion arranged in the first sliding groove, the connecting member includes an opening located at a position of the optical film group corresponding to the protrusion, and the protrusion is inserted into the opening.

[0013] In one embodiment of the present invention, the number of the protrusions is plural, and they are distributed in the first slide groove along the extension direction of the first slide groove, and the multiple protrusions are symmetrically arranged relative to the center of the first slide groove, the number of the openings is the same as the number of the protrusions, and the multiple protrusions are connected to the multiple openings in a one-to-one correspondence.

[0014] In one embodiment of the present invention, a slope is provided on a side of the protrusion facing the receiving groove, and a width of the protrusion away from the bottom plate is smaller than a width of the protrusion close to the bottom plate.

[0015] In one embodiment of the present invention, the fixing member further includes a limiting portion arranged in the first sliding groove, and the connecting member further includes an avoidance groove arranged at a position corresponding to the optical film group and the limiting portion, and the limiting portion abuts against the optical film group at the avoidance groove.

[0016] In an embodiment of the present invention, an assembly hole is provided on the first connecting plate corresponding to the limiting portion, and the assembly hole is communicated with the first sliding groove to expose the limiting portion.

[0017] In an embodiment of the present invention, a surface of the limiting portion close to the assembly hole does not protrude outside the assembly hole.

[0018] In one embodiment of the present invention, the backlight module further includes a first buffer, which is arranged on a side of the optical film group away from the bottom plate and close to the avoidance groove, and the first buffer is arranged between the optical film group and the inner wall of the first sliding groove.

[0019] In one embodiment of the present invention, the plurality of connecting plates further include two second connecting plates respectively connected to the opposite ends of the first connecting plate, and the slide groove further includes a second slide groove arranged on the second connecting plate, and the second slide groove is connected to the first slide groove.

[0020] In one embodiment of the present invention, the plurality of connecting plates further include a third connecting plate arranged opposite to the first connecting plate, and the two second connecting plates are also connected to the opposite ends of the third connecting plate, and the first connecting plate, the two second connecting plates and the third connecting plate are connected to form the accommodating groove.

[0021] In one embodiment of the present invention, the fixing member further includes a fixing groove provided on the third connecting plate, and the connecting member further includes a convex structure provided on the optical film group corresponding to the fixing groove, and the convex structure is inserted into the fixing groove.

[0022] In one embodiment of the present invention, a mounting opening communicating with the second sliding groove is provided on a side of the second connecting plate away from the bottom plate, and the mounting opening is provided at an end of the second connecting plate away from the first connecting plate and located on a side of the second connecting plate close to the accommodating groove;

[0023] The display module includes a second buffer and a display panel, and the second buffer is arranged on the surface of the first connecting plate away from the bottom plate, the surface of the second connecting plate away from the bottom plate, and the surface of the third connecting plate away from the bottom plate, and the display panel is arranged on the surface of the second buffer away from the back frame.

[0024] In one embodiment of the present invention, the second buffer member further extends to a side of the assembly opening away from the bottom plate.

[0025] In an embodiment of the present invention, a boundary of the assembly opening away from the accommodating groove does not overlap with the optical film assembly in a thickness direction of the optical film assembly.

[0026] The beneficial effects of the present invention are as follows: the present invention provides a slide groove on the side surface of the connecting plate of the back frame to clamp the optical film group in the slide groove, and provides a fixing piece in the slide groove, and provides a connecting piece in the optical film group, so that the fixing piece and the connecting piece are matched and connected to fix the optical film group in the slide groove, thereby playing the role of supporting and fixing the optical film group; and there is no need to provide a middle frame, and the display module is directly provided on the back frame, thereby avoiding the occurrence of adverse phenomena caused by friction between the middle frame and the back frame, the optical film group, etc., and improving the yield rate of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solutions and other beneficial effects of the present invention will be made apparent by describing in detail the specific embodiments of the present invention in conjunction with the accompanying drawings.

[0028] Figure 1 A schematic structural diagram of a display device in related art;

[0029] Figure 2 A schematic structural diagram of a display device provided by an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of an exploded structure of a display device provided by an embodiment of the present invention;

[0031] Figure 4 A schematic structural diagram of a protrusion in a first connecting plate provided in an embodiment of the present invention;

[0032] Figure 5 A schematic structural diagram of an assembly hole in a first connecting plate provided in an embodiment of the present invention;

[0033] Figure 6 A schematic structural diagram of the backlight module provided by an embodiment of the present invention at the assembly hole;

[0034] Figure 7 Another structural diagram of the backlight module at the assembly hole provided by an embodiment of the present invention;

[0035] Figure 8 A schematic structural diagram of a second connecting plate provided in an embodiment of the present invention;

[0036] Figure 9 A schematic structural diagram of an assembly opening in a second connecting plate provided in an embodiment of the present invention;

[0037] Figure 10 A schematic structural diagram of a backlight module at an assembly opening provided by an embodiment of the present invention;

[0038] Figure 11 A schematic structural diagram of a third connecting plate provided in an embodiment of the present invention;

[0039] Figure 12 A schematic structural diagram of an optical film assembly provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0042] Please refer to Figure 1 In the display device provided by the related art, the display device includes a backlight module and a display module located on the light-emitting side of the backlight module. Specifically, the backlight module includes a back frame 1, a reflective sheet 2 disposed in the back frame 1, a light guide plate 3 disposed on the reflective sheet 2, an optical film 4, an optical film 5, and an optical film 6 disposed on the light guide plate 3, and the reflective sheet 2, the light guide plate 3, the optical films 4, 5, and 6 are all disposed in the back frame 1, and a glue layer can be used to adhere the film layers. The display device also includes a middle frame 7, which is fixedly connected to the back frame 1 and is located on the side of the optical films 4, 5, and 6 away from the back frame 1. The display module is arranged on the side of the middle frame 7 away from the optical films 4, 5, and 6 and is placed on the middle frame 7. Specifically, the display module includes a foam 8 arranged on the middle frame 7 and a display panel 9 arranged on the side of the foam 8 away from the middle frame 7. The middle frame 7 can be used to support the display panel 9 and can be used to limit the movement or detachment of the optical films 4, 5, and 6 downward. However, the middle frame 7 is relatively expensive and is prone to deformation during assembly, resulting in poor flatness. As a result, the display panel 9 mounted on the middle frame 7 will display unevenly. In addition, the middle frame 7 is prone to friction with the back frame 1 and the optical films 4, 5, and 6, which leads to a decrease in yield.

[0043] Please refer to Figure 2 An embodiment of the present invention provides a display device, which includes a backlight module and a display module located on the light-emitting side of the backlight module.

[0044] Furthermore, the backlight module includes a back frame 10 and an optical film group 20; the back frame 10 includes a base plate 11 and a plurality of connecting plates 12 connected to the same side of the base plate 11, and the plurality of connecting plates 12 surround the base plate 11 to form a receiving groove 101 in the back frame 10, and at least part of the connecting plates 12 is provided with a slide groove 110 on the side close to the receiving groove 101, and the notch of the slide groove 110 is arranged toward the receiving groove 101.

[0045] The optical film assembly 20 is disposed in the receiving groove 101 and is locked in the sliding groove 110 .

[0046] The display module is arranged on the back frame 10 and is located on the side of the optical film group 20 away from the bottom plate 11. The back frame 10 also includes at least one fixing member 13 arranged on the connecting plate 12, and the optical film group 20 also includes at least one connecting member 201 that cooperates with the at least one fixing member 13.

[0047] During the implementation and application process, the embodiment of the present invention provides a slide groove 110 on the side of the connecting plate 12 of the back frame 10 to clamp the optical film group 20 in the slide groove 110, and provides a fixing member 13 in the slide groove 110, and provides a connecting member 201 in the optical film group 20, so that the fixing member 13 and the connecting member 201 are matched and connected to fix the optical film group 20 in the slide groove 110, thereby playing the role of supporting and fixing the optical film group 20; and there is no need to provide a middle frame, and the display module is directly provided on the back frame 10, avoiding the occurrence of adverse phenomena caused by friction between the middle frame and the back frame 10, the optical film group 20, etc., and improving the yield rate of the display device.

[0048] For details, please refer to Figure 2 The display device provided in an embodiment of the present invention includes a backlight module and a display module arranged on the light-emitting side of the backlight module, wherein the backlight module includes a back frame 10 and various optical films arranged in the back frame 10, and the display module is arranged on the back frame 10. That is, in an embodiment of the present invention, the back frame 10 not only plays the role of carrying the various optical films, but also is used to support the display module.

[0049] Specifically, please combine Figure 2 and Figure 3 In the backlight module, the back frame 10 includes a bottom plate 11 and a plurality of connecting plates 12 connected to the same side of the bottom plate 11, and the plurality of connecting plates 12 surround the bottom plate 11 to form a receiving groove 101 in the back frame 10. Figure 3 and each optical film in the backlight module is placed in the receiving groove 101.

[0050] Among them, each optical film in the backlight module includes a reflective sheet 24 arranged on the base plate 11, a light guide plate 25 arranged on the reflective sheet 24, and an optical film group 20 arranged on the light guide plate 25, wherein the reflective sheet 24 can be attached to the base plate 11 using an adhesive layer 26, and the light guide plate 25 and the reflective sheet 24 can also be bonded together using an adhesive layer 26.

[0051] The optical film group 20 includes a first optical film 21, a second optical film 22 and a third optical film 23 stacked in sequence; optionally, the first optical film 21, the second optical film 22 and the third optical film 23 can be respectively selected from one of a quantum dot film, an incremental film and a prism film, and the embodiment of the present invention does not limit the type and quantity of the optical films in the optical film group 20, which can be selected according to actual needs.

[0052] In the embodiment of the present invention, at least a portion of the connecting plate 12 is provided with a sliding groove 110 on one side close to the accommodating groove 101, and the optical film group 20 is clamped in the sliding groove 110. That is, the embodiment of the present invention fixes and supports the optical film group 20 by providing the sliding groove 110 in the connecting plate 12. Compared with the related art that uses a glue layer for attachment, the embodiment of the present invention uses a mechanical structure for fixation and support, thereby improving the reliability, stability and yield rate of the fixation of the optical film group 20.

[0053] Furthermore, a fixing part 13 is provided on the connecting plate 12, and a connecting part 201 is also provided in the optical film group 20. The connecting part 201 is connected with the fixing part 13 to further fix the back frame 10 to the optical film group 20, further improving the stability and yield of the fixation of the optical film group 20.

[0054] Please combine Figure 2 、 Figure 4 、 Figure 8 as well as Figure 11 In one embodiment, the plurality of connecting plates 12 include a first connecting plate 121 , two second connecting plates 122 and a third connecting plate 123 , and the first connecting plate 121 , the second connecting plate 122 and the third connecting plate 123 are connected to surround the accommodating groove 101 .

[0055] Specifically, the two second connecting plates 122 are connected between the first connecting plate 121 and the third connecting plate 123 , and one end of each second connecting plate 122 is connected to one end of the first connecting plate 121 , and the other end is connected to one end of the third connecting plate 123 .

[0056] Please combine Figure 2 、 Figure 4 as well as Figure 12 The slide groove 110 includes a first slide groove 1101 arranged in the first connecting plate 121, and the side edge of the optical film group 20 close to the first connecting plate 121 is clamped in the first slide groove 1101, wherein the notch of the first slide groove 1101 is set toward the accommodating groove 101, and the extension direction of the first slide groove 1101 can be parallel to the bottom plate 11.

[0057] In the back frame 10, the fixing member 13 includes a protrusion 131 arranged in the first slide groove 1101, and the connecting member 201 includes an opening 2011 arranged at a position corresponding to the optical film group 20 and the protrusion 131. When the optical film group 20 and the back frame 10 are assembled, the protrusion 131 can be inserted into the opening 2011.

[0058] The height of the raised portion 131 can be less than, equal to, or greater than the depth of the opening 2011, and the opening 2011 passes through the first optical film 21, the second optical film 22, and at least a portion of the third optical film 23. The height of the raised portion 131 in a direction perpendicular to the base plate 11 is less than the length of the first slide groove 1101 in a direction perpendicular to the base plate 11, so that the optical film assembly 20 can slide smoothly into the first slide groove 1101.

[0059] It should be noted that the side of the raised portion 131 close to the accommodating groove 101 is set as a slope, and the width of the raised portion 131 away from the bottom plate 11 is smaller than the width of the raised portion 131 close to the bottom plate 11. Therefore, when the optical film group 20 slides in from the outside of the first sliding groove 1101, the optical film group 20 can slide in smoothly along the slope of the raised portion 131 to prevent the optical film group 20 from being stuck. The slope can be an arc surface, which is not limited here.

[0060] In the embodiment of the present invention, the protrusion 131 protrudes from the first slide groove 110 in a direction perpendicular to the base plate 11. When the opening 2011 in the optical film assembly 20 is sleeved on the protrusion 131, the optical film assembly 20 can be prevented from moving in a direction parallel to the base plate 11, thereby improving the fixing effect of the optical film assembly 20.

[0061] In one embodiment, there are a plurality of protrusions 131 distributed within the first slot 1101 along the extension direction of the first slot 1101. The protrusions 131 are symmetrically arranged relative to the center of the first slot 1101. The number of openings 2011 is the same as the number of protrusions 131, and the protrusions 131 are connected to the openings 2011 in a one-to-one correspondence. For example, when there are two protrusions 131, the two protrusions 131 are located on opposite sides of the first slot 1101, thereby improving the symmetry of the back frame 10 in securing the optical film assembly 20.

[0062] In addition, in the embodiment of the present invention, a hole can be dug on the back side of the first connecting plate 121 corresponding to the raised portion 131 and connected to the outside, so as to facilitate the processing and shaping of the raised portion 131 during the manufacturing process of the back frame 10 .

[0063] Furthermore, please combine Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 as well as Figure 12The middle part of the first connecting plate 121 also includes an assembly hole 1211 connected to the first slide groove 1101. The fixing member 13 includes a limiting portion 132 corresponding to the assembly hole 1211 and arranged in the first slide groove 1101. Correspondingly, the connecting member 201 includes an avoidance groove 2012 arranged at the optical film group 20 corresponding to the limiting portion 132.

[0064] Among them, when the optical film group 20 slides into the first sliding groove 1101, the limiting portion 132 abuts against the optical film group 20 at the avoidance groove 2012, and the limiting portion 132 abuts against the three groove surfaces in the avoidance groove 2012 of the optical film group 20, thereby further preventing the optical film group 20 from moving in a direction parallel to the bottom plate 11.

[0065] It should be noted that the limiting portion 132 can be a silicone block. After the optical film assembly 20 slides into the first slide groove 1101 , the limiting portion 132 is placed into the first slide groove 1101 through the assembly hole 1211 to fix the optical film assembly 20 .

[0066] In one embodiment, the assembly hole 1211 can be rectangular, its length can be 40 mm, and its width can be 20 mm, and the limiting portion 132 can be in the shape of a cuboid, and its size can be smaller than the size of the assembly hole 1211. The assembly hole 1211 can expose the limiting portion 132, and the surface of the limiting portion 132 away from the base plate 11 does not protrude outside the assembly hole 1211, so as to keep the surface of the first connecting plate 121 away from the base plate 11 flat, so as to improve the yield rate of subsequent assembly.

[0067] Optionally, the distance between the surface of the limiting portion 132 away from the bottom plate 11 and the surface of the first connecting plate 121 away from the bottom plate 11 is greater than or equal to 0.5 mm.

[0068] Correspondingly, the length of the avoidance groove 2012 can be 30 mm or more, and the width can be 2 mm or more. Its size can be matched with the size of the limiting portion 132, especially the length of the two. For example, the length of the avoidance groove 2012 can be slightly larger than the length of the limiting portion 132 to ensure that the limiting portion 132 can be inserted into the avoidance groove 2012, and the larger the width of the avoidance groove 2012, the stronger the limiting effect of the limiting portion 132 on the optical film group 20.

[0069] The backlight module also includes a first buffer member 14, which is positioned near the avoidance groove 2012 on the side of the optical film assembly 20 away from the base plate 11. The first buffer member 14 is positioned between the optical film assembly 20 and the inner wall of the first chute 1101. Specifically, the first buffer member 14 is attached to the surface of the third optical film 23 away from the second optical film 22 and positioned near the avoidance groove 2012. This prevents damage to the films in the optical film assembly 20 from collision or compression between the optical film assembly 20 and the first chute 1101, and reduces the generation of unusual noise.

[0070] It should be noted that when the optical film assembly 20 is clamped in the first slide groove 1101, the distance between the first buffer 14 and the inner wall of the first slide groove 1101 away from the bottom plate 11 is greater than or equal to 0.05 mm, so that the optical film assembly 20 can slide smoothly into the first slide groove 1101.

[0071] In the embodiment of the present invention, the first buffer member 14 can be made of foam, and the side of the first buffer member 14 close to the receiving groove 101 does not extend beyond the first sliding groove 1101 to prevent the first buffer member 14 from affecting the light output of the backlight module.

[0072] Please combine Figure 2 、 Figure 3 、 Figure 8 、 Figure 9 、 Figure 10 as well as Figure 12 As shown, the two second connecting plates 122 are respectively connected to the opposite ends of the first connecting plate 121, and the slide groove 110 includes a second slide groove 1102 arranged in the second connecting plate 122, and the two second slide grooves 1102 are connected to the opposite ends of the first slide groove 1101; the extension direction of the second slide groove 1102 is also parallel to the base plate 11.

[0073] In an embodiment of the present invention, an assembly opening 1221 connected to the second slide groove 1102 is provided on the side of the second connecting plate 122 away from the base plate 11, and the assembly opening 1221 is provided at one end of the second connecting plate 122 away from the first connecting plate 121, and is located on the side of the second connecting plate 122 close to the accommodating groove 101.

[0074] It can be understood that the assembly opening 1221 can expose the second slide groove 1102 from the side of the second connecting plate 122 away from the bottom plate 11, and then when the reflective sheet 24 and the light guide plate 25 are assembled in the accommodating groove 101, the optical film group 20 can be slid into the second slide groove 1102 from the assembly opening 1221 and pushed toward the direction of the first connecting plate 121 until the opening 2011 and the avoidance groove 2012 in the optical film group 20 are respectively matched with the protrusion 131 and the limit portion 132; that is, the embodiment of the present invention provides the assembly opening 1221 on the second connecting plate 122 away from the first connecting plate 121, so that the optical film group 20 can slide smoothly into the slide groove 110.

[0075] The edge of the assembly opening 1221 on the side away from the receiving groove 101 does not overlap with the optical film assembly 20 in the thickness direction of the optical film assembly 20. That is, when the optical film assembly 20 is placed into the second slide groove 1102 through the assembly opening 1221, the side of the assembly opening 1221 does not block the optical film assembly 20. Optionally, when the optical film assembly 20 slides into the second slide groove 1102, the distance between the edge of the assembly opening 1221 and the optical film assembly 20 is greater than or equal to 0.1 mm. The length of the assembly opening 1221 along the extension direction of the second slide groove 1102 is greater than or equal to one-third of the length of the second slide groove 1102, so that the optical film assembly 20 can slide into the second slide groove 1102 more easily.

[0076] It should be noted that the length of the second connecting plate 122 along the direction surrounding the accommodating groove 101 is shorter than the length of the first connecting plate 121 along the direction surrounding the accommodating groove 101. Correspondingly, the side of the optical film group 20 fixedly connected to the first connecting plate 121 is also longer than the side of the optical film group 20 connected to the second connecting plate 122, so that the longer side of the optical film group 20 can be fixedly connected to the protrusion 131 and the limit portion 132, thereby improving the fixing effect of the optical film group 20 and making the shorter side of the optical film group 20 the side that needs to slide in the second sliding groove 1102, reducing the distance that the optical film group 20 needs to slide in, and effectively reducing the probability of damage to the optical film group 20 during the sliding process.

[0077] Please combine Figure 2 、 Figure 3 、 Figure 11 as well as Figure 12The third connecting plate 123 is connected between the two second connecting plates 122, and the fixing member 13 includes a fixing groove 133 provided on the third connecting plate 123. The connecting member 201 also includes a convex structure 2013 provided at the fixing groove 133 corresponding to the optical film group 20. When the optical film group 20 is clamped in the slide groove 110, the convex structure 2013 is inserted into the fixing groove 133 to fix and support the side of the optical film group 20 away from the first connecting plate 121. At the same time, it can prevent the optical film group 20 from moving in a direction parallel to the bottom plate 11 and a direction perpendicular to the bottom plate 11.

[0078] Optionally, the length of the convex structure 2013 can be greater than or equal to 8 mm, and the width can be greater than or equal to 1.5 mm. Correspondingly, the size of the fixing groove 133 can be slightly larger than the size of the convex structure 2013, so that the convex structure 2013 of the optical film assembly 20 can be smoothly inserted into the fixing groove 133.

[0079] Continuing from the above, during the assembly process of the backlight module, a light source, a reflective sheet 24 and a light guide plate 25 can be first set in the back frame 10, and then the first optical film 21, the second optical film 22 and the third optical film 23 are stacked and arranged, and the first buffer component 14 is attached to the side of the third optical film 23 away from the second optical film 22, and the first buffer component 14 is attached to the position of the third optical film 23 near the avoidance groove 2012. Slide the side of the optical film assembly 20 attached to the first buffer member 14 toward the first connecting plate 121 into the assembly opening 1221 and into the second slide groove 1102 along the assembly opening 1221. The optical film assembly 20 slides from the second slide groove 1102 into the first slide groove 1101 and slides over the inclined surface of the protrusion 131, so that the opening 2011 in the optical film assembly 20 is sleeved on the protrusion 131. At this time, the avoidance groove 2012 of the optical film assembly 20 slides into the first slide groove 1101, and the first buffer member 14 is located between the optical film assembly 20 and the inner wall of the first slide groove 1101. Then, the limiting portion 132 is placed into the first sliding groove 1101 through the assembly hole 1211, and the limiting portion 132 is abutted against the optical film assembly 20 in the avoidance groove 2012; finally, the outer protrusion 2013 of the optical film assembly 20 is clamped in the fixing groove 133 of the third connecting plate 123 to achieve the assembly and fixation of the optical film assembly 20.

[0080] It should be noted that, in the embodiment of the present invention, the light source in the backlight module may include a Mini LED light source or a Micro LED light source, and the light source may be a direct-down type or an edge-in type, which is not limited here.

[0081] In the embodiment of the present invention, please combine Figure 2 and Figure 3The display module is disposed on the back frame 10 , that is, the display module is disposed on the surface of the connecting plate 12 away from the bottom plate 11 . Specifically, the display panel 30 includes a second buffer member 35 and the display panel 30 .

[0082] Optionally, the second buffer member 35 may be foam.

[0083] Among them, the second buffer member 35 is arranged on the surface of the first connecting plate 121 away from the bottom plate 11, the surface of the second connecting plate 122 away from the bottom plate 11, and the surface of the third connecting plate 123 away from the bottom plate 11, and the display panel 30 is arranged on the surface of the second buffer member 35 away from the back frame 10.

[0084] For further information, please refer to Figure 6 and Figure 7 At the assembly hole 1211 of the first connecting plate 121, the second buffer member 35 is arranged to avoid the assembly hole 1211 to avoid the subsequent adjustment of the limiting portion 132 and the resulting inconvenience; please refer to Figure 10 The second buffer member 35 also extends to the side of the assembly opening 1221 away from the bottom plate 11 to block the assembly opening 1221 to prevent the display panel 30 from colliding or squeezing with the optical film assembly 20 at the assembly opening 1221 .

[0085] It should be noted that the assembly opening 1221 is located on the side of the second connecting plate 122 close to the accommodating groove 101, and the second buffer member 35 corresponding to the assembly opening 1221, its side away from the accommodating groove 101 can be attached to the side of the second connecting plate 122 away from the bottom plate 11, and its side close to the accommodating groove 101 can cover the side of the assembly opening 1221 away from the bottom plate 11; wherein, the width of the second buffer member 35 attached to the side of the second connecting plate 122 away from the bottom plate 11 needs to be greater than or equal to 0.8 mm to ensure the stability of the second buffer member 35 at the assembly opening 1221.

[0086] The display panel 30 is arranged on the surface of the second buffer member 35 away from the back frame 10, and the display panel 30 includes a lower polarizer 33 located on the side of the optical film group 20 away from the bottom plate 11, an array substrate 31 arranged on the side of the lower polarizer 33 away from the optical film group 20, a color filter substrate 32 arranged on the side of the array substrate 31 away from the lower polarizer 33, and an upper polarizer 34 arranged on the side of the color filter substrate 32 away from the array substrate 31.

[0087] It is understandable that in the embodiment of the present invention, the display module is directly disposed on the back frame 10 , and thus a middle frame is not required.

[0088] In summary, the embodiment of the present invention provides a slide groove 110 on the side surface of the connecting plate 12 of the back frame 10 to clamp the optical film group 20 in the slide groove 110, and provides a fixing member 13 in the slide groove 110, and provides a connecting member 201 in the optical film group 20, so that the fixing member 13 and the connecting member 201 are matched and connected to fix the optical film group 20 in the slide groove 110, thereby playing the role of supporting and fixing the optical film group 20; and there is no need to provide a middle frame, and the display module is directly provided on the back frame 10, thereby avoiding the occurrence of adverse phenomena caused by friction between the middle frame and the back frame 10, the optical film group 20, etc., and improving the yield rate of the display device.

[0089] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0090] The above is a detailed introduction to a display device provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present invention. Those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A backlight module, characterized in that: The backlight module includes: A back frame, comprising a bottom plate and a plurality of connecting plates disposed on the periphery of the bottom plate, wherein the bottom plate and the connecting plates form a receiving groove, at least some of the connecting plates are provided with a slide groove on a side close to the receiving groove, and the notch of the slide groove is disposed toward the receiving groove, the plurality of connecting plates include a first connecting plate, and the slide groove includes a first slide groove disposed on the first connecting plate; An optical film assembly is disposed in the receiving groove and is clamped in the sliding groove; Wherein, the back frame further comprises at least one fixing member provided on the connecting plate, and the optical film assembly further comprises at least one connecting member cooperatively connected to the at least one fixing member; The fixing member includes a limiting portion arranged in the first sliding groove, the connecting member includes an avoidance groove arranged at a position of the optical film group corresponding to the limiting portion, and the limiting portion is clamped in the avoidance groove.

2. The backlight module according to claim 1, wherein: The fixing member includes a protrusion disposed in the first sliding groove, the connecting member includes an opening located at a position of the optical film group corresponding to the protrusion, and the protrusion is inserted into the opening.

3. The backlight module according to claim 2, wherein: The number of the protrusions is plural and distributed in the first chute along the extension direction of the first chute. The number of the openings is the same as the number of the protrusions, and the multiple protrusions are connected to the multiple openings in a one-to-one correspondence.

4. The backlight module according to claim 2, wherein: A slope is provided on a side of the protrusion facing the receiving groove, and a width of the protrusion away from the bottom plate is smaller than a width of the protrusion close to the bottom plate.

5. The backlight module according to claim 1, wherein: An assembly hole is provided on the first connecting plate corresponding to the limiting portion, and the assembly hole is communicated with the first sliding groove to expose the limiting portion.

6. The backlight module according to claim 5, wherein: The surface of the limiting portion close to the assembly hole does not protrude outside the assembly hole, and the limiting portion abuts against the optical film assembly in the avoidance groove.

7. The backlight module according to claim 6, wherein: The backlight module further includes a first buffer member, which is arranged on a side of the optical film group away from the bottom plate and close to the avoidance groove. The first buffer member is arranged between the optical film group and the inner wall of the first sliding groove.

8. The backlight module according to claim 1, wherein: The plurality of connecting plates further include two second connecting plates respectively connected to opposite ends of the first connecting plate, and the slide groove further includes a second slide groove arranged on the second connecting plate, and the second slide groove is connected to the first slide groove.

9. The backlight module according to claim 8, wherein: The multiple connecting plates also include a third connecting plate arranged opposite to the first connecting plate, and the two second connecting plates are also connected to the opposite ends of the third connecting plate, and the first connecting plate, the two second connecting plates and the third connecting plate are connected to form the accommodating groove; the fixing member also includes a fixing groove arranged on the third connecting plate, and the connecting member also includes an outward protrusion structure arranged at the position of the optical film group corresponding to the fixing groove, and the outward protrusion structure is inserted into the fixing groove.

10. The backlight module according to claim 8, wherein: An assembly opening connected to the second sliding groove is provided on the side of the second connecting plate away from the bottom plate, and the assembly opening is provided at one end of the second connecting plate away from the first connecting plate and located on the side of the second connecting plate close to the accommodating groove.

11. A display device, characterized in that: The display device includes a display module and the backlight module according to any one of claims 1 to 10, wherein the display module is located on the light-emitting side of the backlight module.

12. The display device according to claim 11, wherein The display module is arranged on the back frame and is located on a side of the optical film set away from the bottom plate.

13. The display device according to claim 12, wherein: The plurality of connecting plates further include two second connecting plates respectively connected to opposite ends of the first connecting plate, and the chute further includes a second chute provided on the second connecting plates, and the second chute is connected to the first chute; The plurality of connecting plates further include a third connecting plate arranged opposite to the first connecting plate, and the two second connecting plates are further connected to opposite ends of the third connecting plate, the first connecting plate, the two second connecting plates and the third connecting plate are connected to form the accommodating groove; the second connecting plate is provided with an assembly opening connected to the second sliding groove on a side away from the bottom plate, and the assembly opening is provided at an end of the second connecting plate away from the first connecting plate and is located on a side of the second connecting plate close to the accommodating groove, and a boundary of the assembly opening on a side away from the accommodating groove does not overlap with the optical film group in a thickness direction of the optical film group; The display module includes a second buffer and a display panel, and the second buffer is arranged on the surface of the first connecting plate away from the bottom plate, the surface of the second connecting plate away from the bottom plate, and the surface of the third connecting plate away from the bottom plate. The display panel is arranged on the surface of the second buffer away from the back frame, and the second buffer also extends to the side of the assembly opening away from the bottom plate.

Images