Frame structure, backlight module and display device

Abstract

A frame structure (2) includes an inner frame (3) and a plurality of outer frames (4) coupled to the inner frame (3). The inner frame (3) has at least one first coupling member (31) disposed on an outer periphery thereof, and the first coupling member (31) extends along at least a first direction (X) on the outer periphery. The outer frame (4) is detachably coupled to the inner frame (3) along the first direction (X) so that the inner frame (3) is surrounded by the outer frame (4). Each outer frame (4) has at least one second coupling member (41) disposed on an inner periphery thereof. Each outer frame (4) is coupled to the inner frame (3) by the second coupling member (41) and the first coupling member (31) of the inner frame (3) being engaged with each other along the first direction (X). Assembling the inner frame (3) and the outer frame (4) by direct coupling can reduce the number of assembly components and improve assembly and rework convenience. A backlight module and a display device including the frame structure (2) are also provided.

Description

[0001] This application claims priority to Chinese Patent Application No. 202310736560.2, filed on June 20, 2023, entitled "Frame Structure, Backlight Module and Display Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to an optical device, and more particularly to a frame structure, a backlight module, and a display device. Background Technology

[0003] Liquid crystal displays (LCDs) have advantages such as high image quality, small size, light weight, low voltage driving, low power consumption, and wide range of applications. Therefore, they have been widely used in consumer electronics or computer products such as portable TVs, mobile phones, camcorders, laptops, desktop monitors, and projection TVs, becoming the mainstream of displays.

[0004] Existing displays typically consist of a display panel and a backlight module, with the backlight module connected to the display panel via a frame assembly. The assembly process of the backlight module involves combining the frame assembly, light source, and various optical elements. Currently, the components of backlight modules are still relatively complex, easily resulting in burrs and foreign matter residue, and are not easily repairable, further increasing rework costs. Therefore, increasing the assembly efficiency of backlight modules, reducing the number of components to minimize burr and foreign matter residue, facilitating easy cleaning, reducing material rework costs caused by assembly defects, and simultaneously improving product yield have become crucial issues. Summary of the Invention

[0005] Therefore, the object of the present invention is to provide a frame structure that reduces the number of components.

[0006] The present invention provides a frame structure comprising an inner frame and a plurality of outer frames coupled to the inner frame. The inner frame has at least one first coupling member disposed on its outer peripheral surface, and the first coupling member extends along at least a first direction on the outer peripheral surface. The outer frames are detachably coupled to the inner frame along the first direction, such that the inner frame is surrounded by the outer frames. Each outer frame has at least one second coupling member disposed on its inner peripheral surface, wherein each outer frame is coupled to the inner frame by the second coupling member engaging with the first coupling member of the inner frame in the first direction.

[0007] Another technical aspect of the present invention is that each of the outer frames includes a side wall and a bottom wall connected to the side wall, the second connecting member is disposed on the inner circumferential surface of the side wall, the side wall and the bottom wall together surround an accommodating space, and the inner frame is accommodated in the accommodating space.

[0008] Another technical aspect of the present invention is that the inner frame further includes a plurality of fixing posts, which extend toward the bottom wall of the outer frame.

[0009] Another technical aspect of the present invention is that the inner frame further includes a plurality of nuts respectively embedded in corresponding fixing posts, and the bottom wall of each outer frame has a plurality of through holes, the through holes respectively corresponding to the fixing posts of the inner frame, and the frame structure further includes a plurality of locking members passing through the through holes and correspondingly locked onto the nuts.

[0010] Another technical aspect of the present invention is that the first connecting member of the inner frame is grooved, while the second connecting member of each of the outer frames is convex.

[0011] Another technical aspect of the present invention is that the first connecting member of the inner frame is disposed around the outer peripheral surface, extending simultaneously along the first direction and a second direction, the second direction being not parallel to the first direction. The number of second connecting members of each outer frame is multiple and they are divided into a first group extending along the first direction and a second group extending along the second direction. The second connecting members belonging to the first group can slide and cooperate with the first connecting member of the inner frame in the first direction until the second connecting member belonging to the second group is positioned on the first connecting member of the inner frame in the second direction.

[0012] Another technical aspect of the present invention is that the inner frame includes a plurality of reflective portions arranged in a matrix, and a frame surrounding the reflective portions, wherein the first connecting member is disposed on the outer peripheral surface of the frame surrounding portion.

[0013] Another object of the present invention is to provide a backlight module comprising a frame structure as described above, and a light source. The light source includes a lamp panel and a plurality of light-emitting elements arranged in a matrix on the lamp panel. Each of the reflective portions of the inner frame has an opening, and the inner frame is disposed on the lamp panel such that the light-emitting elements extend through the corresponding openings and into the corresponding reflective portions.

[0014] Another technical aspect of the present invention is that the backlight module further includes an optical unit, which is mounted on the inner frame. The inner frame further includes at least one positioning member disposed on the frame portion, which surrounds the periphery of the optical unit.

[0015] Another technical aspect of the present invention is that the backlight module further includes an optical unit, which has multiple optical films, and the frame portion of the inner frame has multiple stepped platforms of different heights for bonding and fixing the various optical films of the optical unit.

[0016] Another object of the present invention is to provide a display device comprising a backlight module as described above, and a display panel disposed on the backlight module. Each of the outer frames further comprises a top wall and at least one limiting member, the top wall being located above the frame surrounding portion of the inner frame, and the limiting member being disposed on the top wall and surrounding the periphery of the display panel.

[0017] The present invention discloses a backlight module comprising a light source, a reflective unit, and multiple outer frames. The light source includes a lamp panel and multiple light-emitting elements arranged in a matrix on the lamp panel. The reflective unit includes multiple reflective portions arranged in a matrix, a frame surrounding the reflective portions, and at least one first connecting member disposed on the frame surrounding. The first connecting member extends at least along a first direction on the outer peripheral surface of the frame surrounding. Each reflective portion has an opening, and the reflective unit is disposed on the lamp panel such that the light-emitting elements pass through corresponding openings and extend into corresponding reflective portions. The outer frames are detachably attached to the reflective unit along the first direction, such that the reflective unit is surrounded by the outer frames. Each outer frame has at least one second connecting member disposed on its inner peripheral surface, wherein each outer frame is attached to the reflective unit by the second connecting member engaging with the first connecting member of the reflective unit in the first direction.

[0018] Another technical aspect of the present invention is that the backlight module further includes an optical unit, the optical unit having multiple optical films, and the frame portion of the reflective unit having multiple stepped platforms of different heights for bonding and fixing the various optical films of the optical unit.

[0019] Another technical aspect of the present invention is that the backlight module further includes an optical unit, which is mounted on the reflective unit. The reflective unit further includes at least one positioning member disposed on the frame portion, which surrounds the periphery of the optical unit.

[0020] Another technical aspect of the present invention is that the reflective unit further includes a plurality of fixed posts, the fixed posts extending toward the outer frame, and the extending direction of the fixed posts is not parallel to the first direction.

[0021] Another technical aspect of the present invention is that the reflective unit further includes a plurality of ribs respectively disposed on the outer ring surface of the corresponding fixed column and arranged radially at intervals, the ribs extending along the axial direction of the fixed column and pressing against the lamp plate.

[0022] Another technical aspect of the present invention is that the lamp panel of the light source has multiple openings, and the fixing post of the reflecting unit is respectively aligned with the openings of the lamp panel.

[0023] Another technical aspect of the present invention is that each of the outer frames includes a bottom wall having a plurality of perforations, the perforations corresponding to the fixing posts of the reflective unit, the fixing posts of the reflective unit extending into the openings of the lamp panel but not into the perforations of the bottom wall.

[0024] Another object of the present invention is to provide a display device comprising a backlight module as described above, and a display panel disposed on the backlight module. Each of the outer frames further comprises a top wall and at least one limiting member, the top wall being located above the frame surrounding portion of the inner frame, and the limiting member being disposed on the top wall and surrounding the periphery of the display panel.

[0025] The advantage of this invention lies in the fact that, through the design of multiple outer frames, they are detachably attached to the inner frame along the first direction, so that the inner frame is surrounded by the outer frames. Furthermore, each outer frame is attached to the inner frame by the second connecting member engaging with the first connecting member of the inner frame in the first direction, thus reducing assembly tolerances. Additionally, the use of a top frame, as in conventional art, is unnecessary, thereby reducing the number of assembly components, improving assembly and rework convenience, and reducing the risk of burr residue and scratches on the diaphragm during assembly, as well as the increased risk of foreign matter buildup. Attached Figure Description

[0026] Figure 1 This is an exploded perspective view, which is a preferred embodiment of the backlight module of the present invention;

[0027] Figure 2 This is a magnified view of a portion of the image, illustrating... Figure 1 The enlarged view shown in the middle frame;

[0028] Figure 3 It is an enlarged exploded view illustrating the structure of an inner frame and two outer frames;

[0029] Figure 4 It is a magnified view of a portion of the structure, illustrating the shape of the outer frame;

[0030] Figure 5 It is a partial cross-sectional view illustrating the appearance of the inner frame combined with a light source and an optical unit;

[0031] Figure 6 It is a partial cross-sectional view illustrating the locking method between the inner frame and the outer frame;

[0032] Figure 7 It is a partial cross-sectional view illustrating the appearance of the inner frame combined with the outer frame; and

[0033] Figure 8 This is a schematic diagram, which is a preferred embodiment of the display device of the present invention. Detailed Implementation

[0034] The features and technical content of the related patent applications of this invention will be clearly presented in the following detailed description of the preferred embodiments with reference to the accompanying drawings. Before proceeding with the detailed description, it should be noted that similar elements are represented by the same numbers. Furthermore, directional terms mentioned in the following embodiments, such as up, down, left, right, front, back, bottom, and top, are only for reference to the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the invention.

[0035] See Figures 1 to 3 This is a preferred embodiment of the backlight module of the present invention, comprising a frame structure 2, a light source 6, and an optical unit 7. The frame structure 2 includes an inner frame 3 and a plurality of outer frames 4 attached to the inner frame 3. (See also...) Figure 3 and Figure 4 The inner frame 3 has at least one first connecting member 31 disposed on its outer peripheral surface, and the first connecting member 31 extends at least along a first direction X on the outer peripheral surface. The outer frame 4 is detachably attached to the inner frame 3 along the first direction X, so that the inner frame 3 is surrounded by the outer frame 4. Each outer frame 4 has at least one second connecting member 41 disposed on its inner peripheral surface, wherein each outer frame 4 is attached to the inner frame 3 by the second connecting member 41 engaging with the first connecting member 31 of the inner frame 3 in the first direction X. The frame structure 2, through the design of multiple outer frames 4, is detachably attached to the inner frame 3 along the first direction X, so that the inner frame 3 is surrounded by the outer frames 4, and the second connecting member 41 of each outer frame 4 engages with the first connecting member 31 of the inner frame 3 in the first direction X, thus reducing assembly tolerances. In addition, the upper frame of conventional technology is not required, so the number of assembly parts can be reduced, the ease of assembly and rework can be improved, and the risk of burrs and foreign matter residue, as well as scratches on the diaphragm and increased foreign matter during assembly can be reduced.

[0036] See Figure 1 and Figure 2 In this embodiment, the light source 6 includes a lamp panel 61 and a plurality of light-emitting elements 62 arranged in a matrix on the lamp panel 61. The inner frame 3 has the structure of a reflective unit and includes a plurality of reflective portions 32 arranged in a matrix, and a frame portion 33 surrounding the reflective portions 32. Each of the reflective portions 32 of the inner frame 3 has an opening 321, and the inner frame 3 is disposed on the lamp panel 61 such that the light-emitting elements 62 respectively pass through the corresponding opening 321 and extend into the corresponding reflective portion 32 (e.g., ...). Figure 5(As shown). Therefore, the inner frame 3 is a three-dimensional reflective sheet, or a reflective unit. The optical unit 7 is supported on the inner frame 3 and has multiple optical films 71. The frame portion 33 of the inner frame 3 has multiple stepped platforms 331 of different heights for bonding and fixing the various optical films 71 of the optical unit 7. The optical films 71 are bonded to the stepped platforms 331 of different heights using lugs 711 of different sizes. Using these stepped platforms 331 of different heights and lugs 711 of different sizes, the correct optical film 71 and its attachment position can be easily identified, improving the accuracy and effectiveness of the adhesive application. See reference. Figure 5 The inner frame 3 also includes a positioning member 34 disposed on the frame enclosure 33. The positioning member 34 surrounds the periphery of the optical unit 7. When the optical unit 7 is placed on the frame enclosure 33 of the inner frame 3, the positioning member 34 can prevent the optical unit 7 from undergoing lateral displacement, thus preventing the optical film 7 from shifting due to vibration during movement or reliability testing, which would affect the optical quality. After the inner frame 3, the light source 6, and the optical unit 7 are assembled, the outer frame 4 is then attached to the inner frame 3.

[0037] See Figure 3 and Figure 4 More specifically, the first connecting member 31 of the inner frame 3 is disposed around the outer peripheral surface of the frame portion 33 and extends simultaneously along both the first direction X and a second direction Y, wherein the second direction Y is not parallel to the first direction X. There are two outer frames 4, each of which includes a side wall 42 and a bottom wall 43 connected to the side wall 42. The second connecting member 41 is disposed on the inner peripheral surface of the side wall 42, and the side wall 42 and the bottom wall 43 together surround an accommodating space 40, within which the inner frame 3 is accommodated. The first connecting member 31 is groove-shaped, while the second connecting member 41 of each outer frame 4 is convex, thus the inner frame 3 and the outer frame 4 are assembled by the second connecting member 41 sliding laterally within the first connecting member 31.

[0038] Each outer frame 4 has multiple second connecting members 41, divided into a first group 41a extending along the first direction X and a second group 41b extending along the second direction Y. The second connecting members 41 belonging to the first group 41a can slide and engage with the first connecting members 31 of the inner frame 3 in the first direction X until the second connecting members 41 belonging to the second group 41b are positioned in the second direction Y at the first connecting members 31 of the inner frame 3. That is, when the outer frame 4 is to be joined with the inner frame 3, the second connecting members 41 belonging to the first group 41a of the outer frame 4 slide and assemble along the first direction X, which is the direction of the shorter side of the inner frame 3. Therefore, they can be limited in other directions besides the first direction X, achieving the effect of mutual sliding only when a sliding groove engagement is formed in the first direction X. Until the second joint 41 belonging to the second group 41b is positioned within the first joint 31 of the inner frame 3 in the second direction Y, that is, in the direction of the long side of the inner frame 3. When the outer frame 4 is fully assembled with the inner frame 3, the second joint 41 of both the first group 41a and the second group 41b is positioned within the first joint 31 of the inner frame 3. In this way, in addition to having a positioning effect in both the first direction X and the second direction Y, a limiting effect is also generated in a third direction Z, preventing the outer frame 4 from moving relative to the inner frame 3 in the third direction Z. This assembly method can effectively reduce the difficulty of rework.

[0039] See Figure 6 The inner frame 3 also includes multiple fixing posts 35 and multiple nuts 36 embedded in the corresponding fixing posts 35. The fixing posts 35 extend along the third direction Z toward the bottom wall 43 of the outer frame 4. Each bottom wall 43 of the outer frame 4 has multiple through holes 431, and the lamp plate 61 of the light source 6 has multiple openings 611. The through holes 431 correspond to the openings 611 of the lamp plate 61 and the fixing posts 35 of the inner frame 3, respectively. The frame structure 2 also includes multiple locking members 5 that pass through the through holes 431 and are correspondingly locked onto the nuts 36. When the outer frame 4 is fully assembled with the inner frame 3, the through holes 431 of each outer frame 4 will align with the fixing posts 35 of the inner frame 3, allowing the locking members 5 to be correspondingly locked onto the nuts 36 in the fixing posts 35, thereby enhancing the assembly stability of the outer frame 4 and the inner frame 3. If the outer frame 4 is not fully assembled onto the inner frame 3, the through hole 431 cannot be aligned with the fixing post 35, causing the locking member 5 to fail to lock. Therefore, this can be used as a basis for determining whether the outer frame 4 is assembled in place.

[0040] Furthermore, the fixing post 35 of the reflector unit extends into the opening 611 of the lamp plate 61, but does not extend into the through hole 431 of the bottom wall 43 of the outer frame 4. In other words, the fixing post 35 does not protrude from the outer frame 4. Therefore, when the outer frame 4 is joined together along the first direction X, it will not be interfered with by the extension direction of the fixing post 35. In this way, the design of the fixing post 35 can be used to align with the opening 611 of the lamp plate 61, providing a clear positioning effect during engagement. Simultaneously, the inner frame 3 also includes multiple ribs 37 arranged radially at intervals on the outer ring surface of the corresponding fixing posts 35, extending axially along the fixing post 35. When the locking member 5 is engaged, the ribs 37 on the outer ring surface of the fixing post 35 press against the lamp plate 61, applying stress to the lamp plate 61 and preventing warping.

[0041] In addition, since the size of the opening 611 of the lamp panel 61 can only accommodate the fixing post 35, the rib 37 cannot pass through, and the protruding length of the rib 37 is slightly less than the protruding length of the fixing post 35. When the fixing post 35 extends into the opening 611 of the lamp panel 61, the rib 37 will not enter the opening 611 together, but will contact and press against the lamp panel 61. This provides the assembler with a correct feel for alignment, and at the same time prevents the fixing post 35 from extending further into the through hole 431 of the bottom wall 43, thus avoiding the fixing post 35 from hitting the bottom wall 431 and causing damage to the fixing post 35.

[0042] See Figure 7 The outer frame 4 is assembled on the inner frame 3.

[0043] See Figure 8 A display panel 8 is disposed on the backlight module, which constitutes the display device of the present invention. Each outer frame 4 further includes a top wall 44 and at least one limiting member 45. The top wall 44 is located above the frame surrounding portion 33 of the inner frame 3. The display panel 8 is supported on the top wall 44, and the limiting member 45 is disposed on the top wall 44 and surrounds the periphery of the display panel 8 to limit the position of the display panel 8.

[0044] The frame structure 2 replaces the upper and back frames in the prior art with the outer frame 4, reducing the number of assembly components, lowering costs, reducing assembly time for the upper frame, and reducing the risk of scratching the film and increasing foreign objects when assembling the upper frame from top to bottom. Simultaneously, the design of direct sliding assembly between the inner frame 3 and the outer frame 4 replaces the existing structure of interlocking hooks, reducing assembly tolerances and simultaneously conforming to a three-dimensional positioning and fixing structure. This design can be widely applied to LCD displays, reducing assembly-related problems and lowering costs. It also improves the stability of backlight module thinning and reliability testing processes, reduces the interconnected effects of traditional multi-component combinations, reduces component quantity costs, and further reduces assembly-related problems and assembly fixtures.

[0045] However, the above description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All simple equivalent changes and modifications made in accordance with the claims and description of the present invention shall still fall within the scope of the present invention.

[0046] [Symbol Explanation]

[0047] 2. Framework Structure

[0048] 3 Inner frame

[0049] 31 First joint

[0050] 32 Reflector

[0051] 321 Opening

[0052] 33. Frame section

[0053] 331 Step Platform

[0054] 34 Positioning components

[0055] 35 Fixed Column

[0056] 36 Nuts

[0057] 37 Ribs

[0058] 4. Outer frame

[0059] 40 storage space

[0060] 41 Second joint

[0061] 41a First Group

[0062] 41b Second Group

[0063] 42 Sidewall

[0064] 43 bottom wall

[0065] 431 Perforation

[0066] 44 Top Wall

[0067] 45 Limiting components

[0068] 5 Locking components

[0069] 6. Light source

[0070] 61 Light Panel

[0071] 611 Opening

[0072] 62 Light-emitting components

[0073] 7 Optical Units

[0074] 71 Optical films

[0075] 711 Protruding Ear

[0076] 8 Display Panel

[0077] X First Direction

[0078] Y Second Direction

[0079] Z Third Direction

Claims

1. A framework structure comprising: The inner frame has at least one first joint disposed on its outer peripheral surface, wherein, The first connector extends at least along a first direction on the outer peripheral surface, the first direction being the direction of the short side of the inner frame; and Multiple outer frames are detachably attached to the inner frame along the first direction, such that the inner frame is surrounded by the outer frames. Each outer frame has at least one second connector disposed on its inner circumferential surface, wherein each outer frame is attached to the inner frame by the second connector engaging with the first connector of the inner frame in the first direction. The inner frame includes multiple reflective sections arranged in a matrix, and a surrounding frame section that surrounds the reflective sections. The first connecting member is disposed on the outer peripheral surface of the surrounding frame section. Each reflective portion of the inner frame has an opening, and the inner frame is adapted to be mounted on the lamp plate of an external light source so that multiple light-emitting elements of the external light source extend through the corresponding openings and into the corresponding reflective portions.

2. The frame structure as described in claim 1, wherein, Each of the outer frames includes a side wall and a bottom wall connected to the side wall. The second connector is disposed on the inner circumferential surface of the side wall. The side wall and the bottom wall together surround an accommodating space, and the inner frame is accommodated within the accommodating space.

3. The frame structure as described in claim 2, wherein, The inner frame also includes a plurality of fixed posts that extend toward the bottom wall of the outer frame.

4. The frame structure as described in claim 3, wherein, The inner frame also includes a plurality of nuts embedded in corresponding fixing posts. The bottom wall of each outer frame has a plurality of through holes, the through holes corresponding to the fixing posts of the inner frame. The frame structure also includes a plurality of locking members that pass through the through holes and are locked onto the nuts.

5. The frame structure as described in claim 1, wherein, The first joint of the inner frame is grooved, while the second joint of each of the outer frames is convex.

6. The frame structure as described in claim 1, wherein, The first connector of the inner frame is disposed around the outer peripheral surface and extends simultaneously along the first direction and the second direction, the second direction being not parallel to the first direction. The number of second connectors of each outer frame is multiple and they are divided into a first group extending along the first direction and a second group extending along the second direction. The second connectors belonging to the first group can slide in the first direction in cooperation with the first connector of the inner frame until the second connectors belonging to the second group are positioned in the second direction at the first connector of the inner frame.

7. A backlight module comprising the frame structure as described in claim 1, and a light source comprising a lamp panel and a plurality of light-emitting elements arranged in a matrix on the lamp panel, each of the reflective portions of the inner frame having an opening, the inner frame being disposed on the lamp panel such that the light-emitting elements extend through the corresponding openings and into the corresponding reflective portions.

8. The backlight module as claimed in claim 7, further comprising an optical unit supported on the inner frame, wherein, The inner frame also includes at least one positioning element disposed on the frame portion, the positioning element surrounding the periphery of the optical unit.

9. The backlight module of claim 7 further includes an optical unit having a plurality of optical films, and the frame portion of the inner frame having a plurality of stepped platforms of different heights for bonding and fixing the respective optical films of the optical unit.

10. A display device comprising a backlight module as described in any one of claims 7 to 9, and a display panel disposed on the backlight module, wherein, Each of the outer frames further includes a top wall and at least one limiting member, the top wall being located above the frame surrounding portion of the inner frame, and the limiting member being disposed on the top wall and surrounding the periphery of the display panel.

11. A backlight module, comprising The light source includes a lamp panel and multiple light-emitting elements arranged in a matrix on the lamp panel; The reflective unit includes a plurality of reflective portions arranged in a matrix, a frame portion surrounding the reflective portions, and at least one first connector disposed on the frame portion, the first connector extending at least along a first direction on the outer peripheral surface of the frame portion, wherein... The first direction is the short side direction of the reflective unit. Each of the reflective portions has an opening. The reflective unit is disposed on the lamp plate so that the light-emitting elements pass through the corresponding openings and extend into the corresponding reflective portions. and Multiple outer frames are detachably attached to the reflective unit along the first direction, such that the reflective unit is surrounded by the outer frames. Each outer frame has at least one second connector disposed on its inner circumferential surface, wherein each outer frame is attached to the reflective unit by the second connector engaging with the first connector of the reflective unit in the first direction.

12. The backlight module of claim 11 further includes an optical unit having a plurality of optical films, and the frame portion of the reflective unit having a plurality of stepped platforms of different heights for bonding and fixing the respective optical films of the optical unit.

13. The backlight module of claim 11, further comprising an optical unit mounted on the reflective unit, wherein, The reflective unit also includes at least one positioning member disposed on the frame portion, the positioning member surrounding the periphery of the optical unit.

14. The backlight module as described in claim 11, wherein, The reflective unit also includes a plurality of fixed posts that extend toward the outer frame, and the extension direction of the fixed posts is not parallel to the first direction.

15. The backlight module as described in claim 14, wherein, The reflective unit also includes a plurality of ribs arranged radially at intervals on the outer ring surface of the corresponding fixed column, the ribs extending along the axial direction of the fixed column and pressing against the lamp plate.

16. The backlight module as described in claim 14, wherein, The light source has a lamp panel with multiple openings, and the fixing posts of the reflecting unit are respectively aligned with the openings of the lamp panel.

17. The backlight module as described in claim 16, wherein, Each of the outer frames includes a bottom wall having a plurality of perforations corresponding to the fixing posts of the reflector unit, the fixing posts of the reflector unit extending into the openings of the lamp panel but not into the perforations of the bottom wall.

18. A display device comprising a backlight module as described in any one of claims 11 to 17, and a display panel disposed on the backlight module, wherein, Each of the outer frames further includes a top wall and at least one limiting member, the top wall being located above the frame portion of the reflective portion, and the limiting member being disposed on the top wall and surrounding the periphery of the display panel.

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