Frame structure, backlight module and display device

Abstract

A frame structure (2) comprises an inner frame (3) and a plurality of outer frames (4) combined on the inner frame (3). The inner frame (3) is provided with at least one first joint piece (31) arranged on the outer peripheral surface of the inner frame (3), and the first joint piece (31) at least extends along a first direction (X) on the outer peripheral surface. The outer frame (4) is detachably coupled to the inner frame (3) along a first direction (X), so that the inner frame (3) is surrounded by the outer frame (4). Each outer frame (4) is provided with at least one second joint piece (41) arranged on the inner circumferential face of the outer frame (4). Each outer frame (4) is combined on the inner frame (3) in a way that the second joint piece (41) is matched with the first joint piece (31) of the inner frame (3) in the first direction (X). The inner frame (3) and the outer frame (4) are directly combined for assembly, so that the number of assembly parts can be reduced, and the convenience of assembly and rework is also improved. The invention further provides a backlight module comprising the frame structure (2) and a display device.

Description

Frame structure, backlight module and display device

[0001] This application claims priority to Chinese patent application number 202310736560.2, filed on June 20, 2023, entitled “Frame structure, backlight module and display device,” and all of its contents are incorporated herein by reference. Technical Field

[0002] The present invention relates to an optical device, in particular to a frame structure, a backlight module and a display device. Background Art

[0003] Liquid Crystal Display (LCD) has the advantages of high image quality, small size, light weight, low voltage drive, low power consumption and a wide range of applications. Therefore, it has been widely used in consumer electronics or computer products such as portable TVs, mobile phones, camcorders, notebook computers, desktop monitors, and projection TVs, becoming the mainstream display.

[0004] Existing displays typically include a display panel and a backlight module, which is connected to the display panel via its frame assembly. The assembly process of the backlight module involves combining the frame assembly, light source, and various optical sheets. Since the components of the current backlight module are still complex, it is easy to cause burrs and foreign matter to remain, and it is impossible to repair it, which further increases the rework cost. Therefore, how to increase the assembly efficiency of the backlight module, reduce the number of components to reduce burrs and foreign matter, and make it easy to clean, reduce the cost of rework caused by poor assembly, and at the same time improve product yield, has become a very important issue.

[0005] Summary of the Invention

[0006] Therefore, an object of the present invention is to provide a frame structure with reduced number of components.

[0007] The frame structure of the present invention comprises 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 circumference, and the first coupling member extends along at least a first direction along the outer circumference. The outer frames are detachably coupled to the inner frame along the first direction, so that the inner frame is surrounded by the outer frame. Each outer frame has at least one second coupling member disposed on its inner circumference, wherein each outer frame is coupled to the inner frame by the second coupling member cooperating with the first coupling member of the inner frame in the first direction.

[0008] Another technical means 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 arranged on the inner circumference of the side wall, the side wall and the bottom wall together surround a accommodating space, and the inner frame is accommodated in the accommodating space.

[0009] Another technical means of the present invention is that the inner frame further includes a plurality of fixing columns, and the fixing columns extend toward the bottom wall of the outer frame.

[0010] Another technical means of the present invention is that the inner frame also includes a plurality of nuts respectively embedded in the corresponding fixing columns, the bottom wall of each outer frame has a plurality of through-holes, and the through-holes respectively correspond to the fixing columns of the inner frame. The frame structure also includes a plurality of locking members that pass through the through-holes and are correspondingly locked on the nuts.

[0011] Another technical means of the present invention is that the first connecting member of the inner frame is in the shape of a groove, and the second connecting member of each outer frame is in the shape of a convex strip.

[0012] Another technical means of the present invention is that the first joint member of the inner frame is arranged around the outer peripheral surface to extend simultaneously along the first direction and a second direction, the second direction being non-parallel to the first direction. The number of second joint members of each outer frame is multiple and divided into a first group extending along the first direction and a second group extending along the second direction. The second joint members belonging to the first group can cooperate and slide with the first joint member of the inner frame in the first direction until the second joint members belonging to the second group are positioned on the first joint member of the inner frame in the second direction.

[0013] Another technical means of the present invention is that the inner frame includes a plurality of reflective portions arranged in a matrix, and a frame portion surrounding the reflective portions, and the first connecting member is disposed on an outer peripheral surface of the frame portion.

[0014] 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 comprises a light board and a plurality of light-emitting elements arranged in a matrix on the light board. Each of the reflective portions of the inner frame has an opening. The inner frame is mounted on the light board so that the light-emitting elements extend through the corresponding openings and into the corresponding reflective portions.

[0015] Another technical means of the present invention is that the backlight module further includes an optical unit, which is supported on the inner frame, wherein the inner frame further includes at least one positioning member provided on the frame portion, and the positioning member surrounds the periphery of the optical unit.

[0016] Another technical means of the present invention is that the backlight module further includes an optical unit having a plurality of optical films, and the frame portion of the inner frame has a plurality of stepped platforms of different heights for bonding and fixing the optical films of the optical unit.

[0017] 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 outer frame further comprises a top wall and at least one stopper, the top wall being located above the frame portion of the inner frame, and the stopper being disposed on the top wall and surrounding the periphery of the display panel.

[0018] The backlight module of the present invention includes a light source, a reflective unit, and a plurality of outer frames. The light source includes a lamp board, and a plurality of light-emitting components arranged in a matrix on the lamp board. The reflective unit includes a plurality of reflective parts arranged in a matrix, a frame part surrounding the reflective parts, and at least one first joint member provided on the frame part, the first joint member extending at least along a first direction on the outer circumference of the frame part, wherein each of the reflective parts has an opening, and the reflective unit is provided on the lamp board so that the light-emitting components respectively pass through the corresponding openings and extend into the corresponding reflective parts. The outer frame is detachably coupled to the reflective unit along the first direction, so that the reflective unit is surrounded by the outer frame, and each of the outer frames has at least one second joint member provided on its inner circumference, wherein each of the outer frames is coupled to the reflective unit by the second joint member cooperating with the first joint member of the reflective unit in the first direction.

[0019] Another technical means of the present invention is that the backlight module further includes an optical unit having a plurality of optical films, and the frame portion of the reflective unit has a plurality of stepped platforms of different heights for bonding and fixing the optical films of the optical unit.

[0020] Another technical means of the present invention is that the backlight module further includes an optical unit, which is supported on the reflective unit, wherein the reflective unit further includes at least one positioning member arranged on the frame portion, and the positioning member surrounds the periphery of the optical unit.

[0021] Another technical means of the present invention is that the reflection unit further includes a plurality of fixing posts, the fixing posts extending toward the outer frame, and the extending direction of the fixing posts is not parallel to the first direction.

[0022] Another technical means of the present invention is that the reflective unit further comprises a plurality of ribs respectively provided on the outer annular surfaces of the corresponding fixing posts and arranged radially at intervals, wherein the ribs extend along the axial direction of the fixing posts and press against the lamp board.

[0023] Another technical means of the present invention is that the lamp board of the light source has a plurality of openings, and the fixing posts of the reflective unit are respectively aligned with the openings of the lamp board.

[0024] Another technical means of the present invention is that each of the outer frames includes a bottom wall having a plurality of through holes, the through holes respectively corresponding to the fixing posts of the reflecting unit, the fixing posts of the reflecting unit extending into the opening of the lamp panel and not extending into the through holes of the bottom wall.

[0025] 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 outer frame further comprises a top wall and at least one stopper, the top wall being located above the surrounding portion of the inner frame, and the stopper being disposed on the top wall and surrounding the periphery of the display panel.

[0026] The present invention provides advantages in that, through the design of multiple outer frames, they are detachably coupled to the inner frame along the first direction, so that the inner frame is surrounded by the outer frames. Furthermore, each outer frame is coupled to the inner frame in the first direction by means of a second coupling member that cooperates with the first coupling member of the inner frame, thereby reducing assembly tolerances. Furthermore, the conventional upper frame is not required, thereby reducing the number of assembly components, improving assembly and rework convenience, and reducing the risk of burrs and foreign matter residue, scratching the diaphragm during assembly, and the risk of foreign matter being added. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a perspective exploded view of a preferred embodiment of a backlight module of the present invention;

[0028] FIG2 is a partial enlarged view illustrating an enlarged state of the framed portion in FIG1 ;

[0029] FIG3 is an enlarged exploded view illustrating the structure of an inner frame and two outer frames;

[0030] FIG4 is a partial enlarged view illustrating the structure of the outer frame;

[0031] FIG5 is a partial cross-sectional view illustrating the inner frame combined with a light source and an optical unit;

[0032] FIG6 is a partial cross-sectional view illustrating the locking method of the inner frame and the outer frame;

[0033] FIG7 is a partial cross-sectional view illustrating the state after the inner frame and the outer frame are combined; and

[0034] FIG8 is a schematic diagram of a preferred embodiment of the display device of the present invention. DETAILED DESCRIPTION

[0035] 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 components are represented by the same reference numerals. In addition, directional terms such as up, down, left, right, front, back, bottom, and top mentioned in the following embodiments are only used with reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes only and are not intended to limit the present invention.

[0036] Referring to Figures 1 to 3, a preferred embodiment of the backlight module of the present invention comprises a frame structure 2, a light source 6, and an optical unit 7. The frame structure 2 comprises an inner frame 3 and a plurality of outer frames 4 coupled to the inner frame 3. Referring to Figures 3 and 4, the inner frame 3 has at least one first coupling member 31 disposed on its outer circumference, and the first coupling member 31 extends at least along a first direction X on the outer circumference. 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 of the outer frames 4 has at least one second coupling member 41 disposed on its inner circumference, wherein each of the outer frames 4 is coupled to the inner frame 3 by the second coupling member 41 cooperating with the first coupling member 31 of the inner frame 3 in the first direction X. The frame structure 2 is designed with multiple outer frames 4 that are detachably coupled to the inner frame 3 along the first direction X, so that the inner frame 3 is surrounded by the outer frames 4. Furthermore, each outer frame 4 is coupled to the inner frame 3 by engaging the second coupling member 41 with the first coupling member 31 of the inner frame 3 in the first direction X. This reduces assembly tolerances. Furthermore, the conventional upper frame is not required, thereby reducing the number of assembly components, improving assembly and rework convenience, and reducing the risk of burrs and foreign matter remaining, scratching the diaphragm during assembly, and increasing the risk of foreign matter.

[0037] Referring to Figures 1 and 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 is structured as 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 reflective portion 32 of the inner frame 3 has an opening 321. The inner frame 3 is mounted on the lamp panel 61 so that the light-emitting elements 62 extend through the corresponding opening 321 and into the corresponding reflective portion 32 (as shown in Figure 5 ). Therefore, the inner frame 3 is a three-dimensional reflective sheet, or what can be referred to as a reflective unit. The optical unit 7 is supported on the inner frame 3 and includes a plurality of optical films 71. The frame portion 33 of the inner frame 3 has a plurality of stepped platforms 331 of varying heights for bonding and securing each of the optical films 71 of the optical unit 7. The optical films 71 are bonded to the stepped platforms 331 of varying heights using lugs 711 of varying sizes. By utilizing these stepped platforms 331 of varying heights and lugs 711 of varying sizes, the correct optical film 71 and its attachment position can be easily identified, improving the accuracy and effectiveness of the gluing operation. Referring to FIG5 , the inner frame 3 also includes a positioning member 34 disposed on the frame portion 33 . The positioning member 34 surrounds the periphery of the optical unit 7 . When the optical unit 7 is placed on the frame portion 33 of the inner frame 3 , the positioning member 34 prevents the optical unit 7 from lateral displacement, thereby preventing vibration during movement or reliability testing that could cause the optical film 7 to shift and affect 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 .

[0038] Referring to Figures 3 and 4, in more detail, the first engaging member 31 of the inner frame 3 is disposed around the outer circumference of the frame portion 33 and extends simultaneously along the first direction X and a second direction Y, wherein the second direction Y is non-parallel to the first direction X. There are two outer frames 4, each of which includes a sidewall 42 and a bottom wall 43 connected to the sidewall 42. The second engaging member 41 is disposed on the inner circumference of the sidewall 42. The sidewall 42 and the bottom wall 43 together define an accommodating space 40, within which the inner frame 3 is accommodated. The first engaging member 31 is in the shape of a groove, while the second engaging member 41 of each outer frame 4 is in the shape of a ridge. Therefore, the inner frame 3 and the outer frame 4 are assembled by sliding the second engaging member 41 laterally within the first engaging member 31.

[0039] Each outer frame 4 includes a plurality of second engaging members 41, each of which is 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 engaging members 41 of the first group 41a can slide in cooperation with the first engaging members 31 of the inner frame 3 in the first direction X until the second engaging members 41 of the second group 41b are positioned against the first engaging members 31 of the inner frame 3 in the second direction Y. In other words, when the outer frame 4 is to be combined with the inner frame 3, the second engaging members 41 of the first group 41a of the outer frame 4 are slidably assembled along the first direction X, i.e., the short side direction of the inner frame 3. Therefore, they can be limited in all directions other than the first direction X, and only in the first direction X do they form a sliding groove engagement to achieve the effect of mutual cooperation and sliding. Until the second fasteners 41 belonging to the second group 41b are positioned within the first fasteners 31 of the inner frame 3 in the second direction Y, that is, the longitudinal direction of the inner frame 3. When the outer frame 4 is fully assembled with the inner frame 3, the second fasteners 41 of both the first group 41a and the second group 41b are positioned within the first fasteners 31 of the inner frame 3. In this way, in addition to having a positioning effect in the first direction X and the second direction Y, a limiting effect is also produced in the 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.

[0040] Referring to Figure 6, the inner frame 3 also includes a plurality of fixing posts 35 and a plurality of nuts 36 respectively 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. The bottom wall 43 of each outer frame 4 has a plurality of through-holes 431, and the lamp board 61 of the light source 6 has a plurality of openings 611. The through-holes 431 correspond to the openings 611 of the lamp board 61 and the fixing posts 35 of the inner frame 3. The frame structure 2 also includes a plurality of locking members 5 that pass through the through-holes 431 and are correspondingly locked to the nuts 36. When the outer frame 4 is fully combined with the inner frame 3, the through-holes 431 of each outer frame 4 will be aligned with the fixing posts 35 of the inner frame 3, allowing the locking members 5 to be correspondingly locked to 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 completely assembled on 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. This can be used as a basis for determining whether the outer frame 4 is fully assembled.

[0041] Furthermore, the fixing posts 35 of the reflector unit extend into the opening 611 of the lamp panel 61 and do not extend into the through-holes 431 of the bottom wall 43 of the outer frame 4. In other words, the fixing posts 35 do not protrude from the outer frame 4. Therefore, when the outer frame 4 is joined together along the first direction X, the extension direction of the fixing posts 35 does not interfere. This design allows alignment of the fixing posts 35 with the opening 611 of the lamp panel 61, providing a significant positioning effect during engagement. Furthermore, the inner frame 3 also includes a plurality of radially spaced ribs 37 disposed on the outer annular surfaces of the corresponding fixing posts 35. These ribs 37 extend axially along the fixing posts 35. When the locking member 5 is locked, the ribs 37 on the outer annular surfaces of the fixing posts 35 press against the lamp panel 61, applying stress to the panel 61 and preventing warping.

[0042] In addition, since the size of the opening 611 of the lamp board 61 can only accommodate the fixing column 35, the rib 37 cannot pass through, and the protruding length of the rib 37 is slightly smaller than the protruding length of the fixing column 35. When the fixing column 35 extends into the opening 611 of the lamp board 61, the rib 37 does not enter the opening 611 together, but contacts and presses against the lamp board 61, providing the assembler with a correct positioning feel. At the same time, the fixing column 35 will not further extend into the through hole 431 of the bottom wall 43, thereby preventing the fixing column 35 from hitting the bottom wall 431 and causing damage to the fixing column 35.

[0043] 7 , which shows the outer frame 4 assembled on the inner frame 3 .

[0044] Referring to Figure 8 , a display panel 8 is mounted on the backlight module, forming the display device of the present invention. Each outer frame 4 further includes a top wall 44 and at least one retaining member 45. The top wall 44 is positioned above the frame portion 33 of the inner frame 3. The display panel 8 is supported on the top wall 44. The retaining member 45 is disposed on the top wall 44 and surrounds the periphery of the display panel 8 to retain the display panel 8 in position.

[0045] The frame structure 2 replaces the upper frame and back frame in the prior art with the outer frame 4, reducing the number of assembly parts and costs. It can also reduce the assembly time of the upper frame and the risk of scratching the diaphragm and increasing foreign matter when assembling the upper frame from top to bottom. At the same time, the design of direct sliding assembly of the inner frame 3 and the outer frame 4 replaces the structure of the prior art in which hooks are engaged with each other, reducing assembly tolerances and at the same time meeting the three-dimensional limit fixing structure. This design can be widely used in liquid crystal displays, reducing related problems derived from assembly and reducing costs. At the same time, it can improve the stability of the backlight module thinning and reliability testing process, reduce the linkage effect derived from the traditional combination of multiple parts, reduce the cost of the number of parts, and further reduce related problems and assembly jigs derived from assembly.

[0046] However, the above is only a preferred embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. In other words, simple equivalent changes and modifications made according to the claims and the description of the invention are still within the scope of the patent of the present invention.

[0047] Explanation of Reference Symbols 2 Frame structure 3 Inner frame 31 First joint 32 Reflecting portion 321 Opening 33 Frame portion 331 Stepped platform 34 Positioning member 35 Fixing column 36 Nut 37 Rib 4 Outer frame 40 Accommodating space 41 Second joint 41a First group 41b Second group 42 Side wall 43 Bottom wall 431 Through hole 44 Top wall 45 Limiting member 5 Locking member 6 Light source 61 Light board 611 Opening 62 Light-emitting member 7 Optical unit 71 Optical film 711 Lug 8 Display panel X First direction Y Second direction Z Third direction

Claims

1. A frame structure comprising: The inner frame has at least one first joint member disposed on its outer peripheral surface, wherein: The first connecting member extends at least along a first direction on the outer peripheral surface; and A plurality of outer frames are detachably coupled to the inner frame along the first direction so that the inner frame is surrounded by the outer frames, each of the outer frames having at least one second coupling member disposed on its inner circumference, wherein each of the outer frames is coupled to the inner frame by the second coupling member cooperating with the first coupling member of the inner frame in the first direction.

2. The frame structure according to claim 1, wherein: Each of the outer frames includes a side wall and a bottom wall connected to the side wall. The second joint member is arranged on the inner peripheral surface of the side wall. The side wall and the bottom wall together surround a receiving space. The inner frame is received in the receiving space.

3. The frame structure according to claim 2, wherein: The inner frame further comprises a plurality of fixing posts, wherein the fixing posts extend toward the bottom wall of the outer frame.

4. The frame structure according to claim 3, wherein: The inner frame also includes a plurality of nuts respectively embedded in corresponding fixing columns. The bottom wall of each outer frame has a plurality of through holes, which respectively correspond to the fixing columns of the inner frame. The frame structure also includes a plurality of locking members passing through the through holes and correspondingly locked on the nuts.

5. The frame structure according to claim 1, wherein: The first joint piece of the inner frame is in a groove shape, and the second joint piece of each outer frame is in a convex strip shape.

6. The frame structure according to claim 1, wherein: The first engaging member of the inner frame is arranged around the outer peripheral surface to extend along the first direction and the second direction at the same time, and the second direction is not parallel to the first direction. The number of the second engaging members of each outer frame is multiple and is divided into a first group extending along the first direction and a second group extending along the second direction. The second engaging members belonging to the first group can cooperate and slide with the first engaging member of the inner frame in the first direction until the second engaging members belonging to the second group are positioned at the first engaging member of the inner frame in the second direction.

7. The frame structure according to any one of claims 1 to 6, wherein: The inner frame comprises a plurality of reflective parts arranged in a matrix, and a frame surrounding the reflective parts, and the first joint member is arranged on the outer peripheral surface of the frame surrounding part.

8. A backlight module, comprising a frame structure as described in claim 7, and a light source, wherein the light source comprises a lamp board, and a plurality of light-emitting components arranged in a matrix on the lamp board, each of the reflecting portions of the inner frame has an opening, and the inner frame is arranged on the lamp board so that the light-emitting components respectively pass through the corresponding openings and extend into the corresponding reflecting portions.

9. The backlight module according to claim 8, further comprising an optical unit, the optical unit being supported on the inner frame, wherein: The inner frame further comprises at least one positioning piece arranged on the frame surrounding portion, and the positioning piece surrounds the periphery of the optical unit.

10. The backlight module as claimed in claim 8, further comprising an optical unit, the optical unit having a plurality of optical films, the frame portion of the inner frame having a plurality of stepped platforms of different heights for bonding and fixing the optical films of the optical unit.

11. A display device, comprising the backlight module according to any one of claims 8 to 10, and a display panel arranged on the backlight module, wherein: Each of the outer frames further includes a top wall and at least one stopper. The top wall is located above the frame portion of the inner frame. The stopper is disposed on the top wall and surrounds the periphery of the display panel.

12. A backlight module comprising A light source comprises a light board and a plurality of light emitting elements arranged in a matrix on the light board; The reflective unit comprises a plurality of reflective parts arranged in a matrix, a frame part surrounding the reflective parts, and at least one first joint member disposed on the frame part, wherein the first joint member extends at least along a first direction on the outer peripheral surface of the frame part, wherein: Each of the reflecting parts has an opening, and the reflecting unit is arranged on the lamp board so that the light emitting parts respectively pass through the corresponding openings and extend into the corresponding reflecting parts; and A plurality of outer frames are detachably coupled to the reflective unit along the first direction so that the reflective unit is surrounded by the outer frames, each of the outer frames having at least one second coupling member disposed on its inner circumference, wherein each of the outer frames is coupled to the reflective unit by the second coupling member cooperating with the first coupling member of the reflective unit in the first direction. 13 . The backlight module as claimed in claim 12 , further comprising an optical unit, wherein the optical unit has a plurality of optical films, and the frame portion of the reflective unit has a plurality of stepped platforms with different heights for bonding and fixing the optical films of the optical unit.

14. The backlight module according to claim 12, further comprising an optical unit, the optical unit being supported on the reflective unit, wherein: The reflection unit further comprises at least one positioning member arranged on the frame portion, and the positioning member surrounds the periphery of the optical unit.

15. The backlight module according to claim 12, wherein: The reflection unit further comprises a plurality of fixing posts, wherein the fixing posts extend toward the outer frame, and the extending directions of the fixing posts are not parallel to the first direction.

16. The backlight module according to claim 15, wherein: The reflection unit also includes a plurality of ribs which are respectively arranged on the outer annular surfaces of the corresponding fixing columns and are radially spaced and arranged. The ribs extend along the axial direction of the fixing columns and are pressed against the lamp board.

17. The backlight module according to claim 15, wherein: The lamp board of the light source has a plurality of openings, and the fixing posts of the reflection unit are respectively aligned with the openings of the lamp board.

18. The backlight module according to claim 17, wherein: Each of the outer frames includes a bottom wall having a plurality of through holes, the through holes respectively corresponding to the fixing posts of the reflecting unit, the fixing posts of the reflecting unit extending into the opening of the lamp board and not extending into the through holes of the bottom wall.

19. A display device, comprising the backlight module according to any one of claims 12 to 18, and a display panel arranged on the backlight module, wherein: Each of the outer frames further includes a top wall and at least one stopper. The top wall is located above the frame portion of the inner frame. The stopper is disposed on the top wall and surrounds the periphery of the display panel.

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