Display device, backlight module, and method for assembling backlight module

Abstract

A display device, a backlight module, and an assembling method of the backlight module. The backlight module includes a housing, a diffusion plate, an optical film, a fixing member, and a light source. The housing has a groove which is arranged along the edge of the housing. The diffusion plate is arranged in the housing, and the edge of the diffusion plate is located in the groove of the housing. The optical film is arranged on the diffusion plate and has a through hole. The fixing member is arranged in the groove of the housing and includes a holding portion and a hanging portion. The holding portion is clamped on the edge of the diffusion plate, and the hanging portion is connected to the holding portion and extends through the through hole of the optical film. The light source is arranged in the housing. With the above configuration, the backlight module disclosed herein can achieve the fixation of the diffusion plate and the optical film while maintaining the integrity of the appearance, without the need to be equipped with additional appearance components to beautify the appearance and prevent light leakage.

Description

Technical Field

[0001] The present disclosure relates to a display device, a backlight module of the display device, and an assembly method of the backlight module. Background Art

[0002] The display backlight module includes optical films for homogenizing light from a light source. However, regarding the way of fixing the optical films, the current practices adopted by the backlight modules will affect the appearance of the backplane of the backlight module (for example: grooves need to be formed on the backplane), and may also cause light leakage, such that the display needs to be equipped with additional appearance components to beautify the appearance and prevent light leakage. Summary of the Invention

[0003] In view of this, an object of the present disclosure is to provide a backlight module that can achieve the fixation of optical films without affecting the appearance.

[0004] To achieve the above object, according to some embodiments of the present disclosure, a backlight module includes a housing, a diffusion plate, an optical film, a fixing member, and a light source. The housing has a groove disposed along the edge of the housing. The diffusion plate is disposed in the housing, and an edge of the diffusion plate is located in the groove of the housing. The optical film is disposed on the diffusion plate and has a through hole. The fixing member is disposed in the groove of the housing and includes a holding portion and a hanging portion. The holding portion clamps the edge of the diffusion plate, and the hanging portion is connected to the holding portion and extends through the through hole of the optical film. The light source is disposed in the housing.

[0005] In one or more embodiments of the present disclosure, the holding portion of the fixing member clamps the diffusion plate.

[0006] In one or more embodiments of the present disclosure, the diffusion plate has opposite first and second surfaces. The holding portion of the fixing member includes a first covering portion, a second covering portion, and a third covering portion. The first covering portion and the second covering portion respectively contact the first surface and the second surface of the diffusion plate, and the third covering portion is connected between the first covering portion and the second covering portion.

[0007] In one or more embodiments of the present disclosure, the edge of the diffusion plate has at least one notch, and the holding portion is disposed in the notch.

[0008] In one or more embodiments of the present disclosure, the hanging portion includes a hook located at an end of the hanging portion away from the holding portion.

[0009] In one or more embodiments of the present disclosure, the diffusion plate has a first surface, a second surface, and a third surface. The third surface is opposite to the first surface, and the second surface is connected between the first surface and the third surface. The holding portion of the fixing member includes a connected first covering portion and a second covering portion. The first covering portion and the second covering portion respectively contact the first surface and the second surface of the diffusion plate, and the holding portion is separated from the third surface of the diffusion plate.

[0010] In one or more embodiments of the present disclosure, the hanging portion of the fixing member is connected to the first covering portion and extends through the diffusion plate.

[0011] In one or more embodiments of the present disclosure, the light source, the diffusion plate, and the optical film are arranged in a first direction. The housing includes a platform portion and a side wall portion. The platform portion is used to carry the display panel. The side wall portion is connected to the platform portion, and in the first direction, the side wall portion extends beyond the platform portion.

[0012] According to some embodiments of the present disclosure, a display device includes the above-mentioned backlight module and a display panel disposed on the platform portion of the housing.

[0013] In one or more embodiments of the present disclosure, the light source, the diffusion plate, and the optical film are arranged in a first direction. The housing further includes a side wall portion. The side wall portion is connected to the platform portion and extends along the outer edge of the display panel. And in the first direction, the side wall portion extends beyond the display surface of the display panel or is aligned with the display surface.

[0014] According to some embodiments of the present disclosure, an assembling method of a backlight module includes: clamping the fixing member at the edge of the diffusion plate; disposing the optical film on the diffusion plate and sleeving it on the hanging portion of the fixing member to combine the fixing member, the diffusion plate, and the optical film; and loading the combined fixing member, diffusion plate, and optical film into the housing so that the edges of the fixing member and the diffusion plate are located in the groove of the housing, where the groove is arranged along the edge of the housing.

[0015] In one or more embodiments of the present disclosure, the diffusion plate and the optical film are arranged in a first direction. The step of loading the combined fixing member, diffusion plate, and optical film into the housing includes: sliding the combined fixing member, diffusion plate, and optical film into the groove along a second direction substantially perpendicular to the first direction.

[0016] In summary, in the backlight module of the present disclosure, the diffusion plate and the optical film are combined through the fixing member, and the housing of the backlight module is an integrally formed structure and is formed with a groove. The edges of the diffusion plate and the optical film and the fixing member can be accommodated in the groove. In this way, the backlight module of the present disclosure can achieve the fixation of the diffusion plate and the optical film while maintaining the integrity of the appearance, without the need to be equipped with additional appearance components to beautify the appearance and prevent light leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To make the above and other objectives, features, advantages, and implementation manners of the present disclosure more apparent and understandable, the descriptions of the accompanying drawings are as follows:

[0018] Figure 1 To illustrate a perspective view of a display device according to an embodiment of the present disclosure;

[0019] Figure 2 To illustrate Figure 1 A partial enlarged cross-sectional view of the display device shown along line segment 1-1';

[0020] Figure 3 To illustrate Figure 2 An exploded view of some components of the display device shown;

[0021] Figures 4 to 6 To illustrate Figure 2 A cross-sectional view of the backlight module of the display device shown at each assembly stage;

[0022] Figure 7 To illustrate an exploded view of a diffusion plate, an optical film, and a fixing member according to another embodiment of the present disclosure;

[0023] Figure 8 To illustrate Figure 7 An assembled view of the diffusion plate, the optical film, and the fixing member shown;

[0024] Figure 9 To illustrate an exploded view of a diffusion plate, an optical film, and a fixing member according to another embodiment of the present disclosure.

[0025]

Symbol Description

[0026] 100: Display device

[0027] 110: Display panel

[0028] 111: First surface

[0029] 112: Second surface

[0030] 120: Backlight module

[0031] 130: Housing

[0032] 131: Backplate portion

[0033] 132: Sidewall portion

[0034] 133: Platform portion

[0035] 134: Surface

[0036] 135: Bending portion

[0037] 136: End

[0038] 138: Groove

[0039] 139: Opening

[0040] 141: Light source

[0041] 142: Reflector

[0042] 143: Opening

[0043] 151, 251, 351: Diffuser

[0044] 152: Optical film

[0045] 153, 253, 353: Notch

[0046] 160, 260, 360: Fastening member

[0047] 161, 261, 361: Holding part

[0048] 161A, 161B, 161C, 261B, 361A, 361B: Covering part

[0049] 162, 262, 362: Hanging part

[0050] 162A, 264A, 364A: First section

[0051] 162B, 264B, 364B: Second section

[0052] 163: Hook

[0053] 354: Boss

[0054] A: Adhesive layer

[0055] B: Bottom surface

[0056] C1, C2, C3: Surface

[0057] D1: First direction

[0058] D2: Second direction

[0059] D3: Third direction

[0060] H: Through hole Detailed implementation manners

[0061] To make the description of the present disclosure more detailed and complete, reference may be made to the accompanying drawings and the various embodiments described below. The elements in the drawings are not drawn to scale and are provided only for the purpose of illustrating the present disclosure. Many practical details are described below to provide a comprehensive understanding of the present disclosure. However, those of ordinary skill in the relevant art should understand that the present disclosure may be implemented without one or more of the practical details. Therefore, these details should not be used to limit the present disclosure.

[0062] Please refer to Figure 1 , the display device 100 includes a display panel 110 (e.g., a liquid crystal display panel) and a backlight module 120. The display panel 110 has opposite first and second surfaces 111 and 112 (see Figure 2 ), where the first surface 111 is used to display an image. That is, the first surface 111 is the display surface of the display panel 110. The backlight module 120 includes a housing 130, and the display panel 110 is disposed on the housing 130 of the backlight module 120 with the first surface 111 facing away from the backlight module 120. The backlight module 120 is configured to provide illumination for the display panel 110 so that the display panel 110 can display an image.

[0063] As Figure 1 shown, for ease of description, the first direction D1 is defined as the normal direction of the first surface 111 of the display panel 110, the second direction D2 is the direction in which the short side of the display device 100 extends (e.g., the upward direction), and the third direction D3 is the direction in which the long side of the display device 100 extends (e.g., the horizontal direction). In some embodiments, the first direction D1, the second direction D2, and the third direction D3 are substantially perpendicular or orthogonal to each other.

[0064] Please refer to Figure 2 , the housing 130 has an opening 139 that faces the display panel 110. The backlight module 120 further includes a light source 141 disposed in the housing 130. The light source 141 is disposed facing the opening 139 and is oriented toward the first direction D1. In this way, the light source 141 can irradiate the display panel 110 through the opening 139 of the housing 130. In some embodiments, the light source 141 includes one or more LEDs. In some embodiments, the light source 141 includes an LED strip or an LED panel.

[0065] As Figure 2 shown, in some embodiments, the backlight module 120 further includes a reflector 142. The reflector 142 partially covers the inner surface of the housing 130 and is configured to reflect the light incident on the inner surface of the housing 130 toward the display panel 110. In some embodiments, the reflector 142 has one or more openings 143, and the light source 141 is disposed in the openings 143 of the reflector 142.

[0066] AsFigure 2 As shown, in some embodiments, the housing 130 includes a back plate portion 131, a side wall portion 132, and a platform portion 133. The back plate portion 131 is used to carry the light source 141 and the reflector 142. Specifically, the light source 141 can be disposed on the bottom surface B of the back plate portion 131, and the reflector 142 can cover the bottom surface B and the side surface of the back plate portion 131. The platform portion 133 is opposite to the back plate portion 131 and is located on at least one side of the opening 139 of the housing 130. The platform portion 133 is used to carry the display panel 110. For example, the display panel 110 can be fixed to the side of the platform portion 133 away from the back plate portion 131 through the adhesive layer A. The side wall portion 132 connects the back plate portion 131 and the platform portion 133, and the back plate portion 131, the side wall portion 132, and the platform portion 133 together define a groove 138 disposed along the edge of the housing 130.

[0067] In some embodiments, the housing 130 has the side wall portion 132 and the platform portion 133 on the top side and the left and right sides, and together with the back plate portion 131, forms the groove 138 on the top side and the left and right sides of the housing 130. In some embodiments, the housing 130 is an integrally formed metal housing.

[0068] As Figure 2 shown, the backlight module 120 further includes a diffusion plate 151 and at least one optical film 152 disposed in the housing 130. The light source 141, the diffusion plate 151, and the optical film 152 are arranged in the first direction D1, and the diffusion plate 151 and the optical film 152 are located between the light source 141 and the display panel 110. The optical film 152 is disposed on the diffusion plate 151, and at least one edge of the diffusion plate 151 and the optical film 152 is located in the groove 138 of the housing 130.

[0069] In some embodiments, the diffusion plate 151 and the optical film 152 can be fixed to each other through double-sided tape or other suitable adhesives (not shown in the figure). In some embodiments, the adhesive can be distributed between the diffusion plate 151 and the optical film 152 and adjacent to the edges of the diffusion plate 151 and the optical film 152. In some embodiments, the diffusion plate 151 is fixedly connected to the housing 130 (for example: the diffusion plate 151 can be pasted and fixed on the housing 130).

[0070] Please refer to Figure 3 . As Figure 2 and Figure 3 shown, the backlight module 120 further includes at least one fixing member 160. The fixing member 160 is disposed in the housing 130 and is used to strengthen the fixation of the diffusion plate 151 and the optical film 152. In some embodiments, the fixing member 160 is a metal member and can be formed by bending sheet metal. In some embodiments, the fixing member 160 includes stainless steel or other suitable metal materials.

[0071] As shown in Figure 2 and Figure 3 FIG. 1, specifically, the fixing member 160 is disposed in the groove 138 of the housing 130 (i.e., the fixing member 160 is located between the back plate portion 131 and the platform portion 133 of the housing 130), and includes a holding portion 161 and a hanging portion 162 connecting the holding portion 161. The holding portion 161 is clamped to the edge of the diffusion plate 151. The optical film 152 has a through hole H, and the hanging portion 162 extends through the through hole H of the optical film 152.

[0072] With the above configuration, the backlight module 120 of the present disclosure can achieve the fixation of the diffusion plate 151 and the optical film 152 while maintaining the integrity of the appearance, without the need to provide additional appearance components to beautify the appearance and prevent light leakage. Omitting the appearance components not only simplifies the structure of the display device 100, but also helps the display device 100 to achieve a narrow bezel design.

[0073] In some embodiments, the fixing member 160 is disposed on the upper edges of the diffusion plate 151 and the optical film 152, where the upper edges refer to the edges located at the uppermost when the display device 100 is in an upright state (i.e., Figure 1 the state shown in FIG. 1). The display device 100 is mostly placed upright during normal use. At this time, the fixing member 160 can provide support for the optical film 152 from above. In this way, even if the adhesive between the diffusion plate 151 and the optical film 152 fails (e.g., due to environmental factors such as temperature), the fixing member 160 can maintain the position of the optical film 152 in a hanging manner to align it with the diffusion plate 151.

[0074] In some embodiments, the backlight module 120 includes a plurality of fixing members 160 arranged along the upper edges of the diffusion plate 151 and the optical film 152 at intervals (i.e., arranged along the third direction D3). The number and arrangement intervals of the fixing members 160 can be determined according to the size of the display device 100 or the display panel 110.

[0075] As shown in Figure 2 and Figure 3As shown, in some embodiments, the holding portion 161 of the fixing member 160 clamps the diffusion plate 151. In some embodiments, the diffusion plate 151 has surfaces C1, C2, and C3, where surface C3 is opposite to surface C1, and surface C2 is connected between surface C1 and surface C3. The holding portion 161 of the fixing member 160 includes covering portions 161A, 161B, and 161C, where covering portion 161A is opposite to covering portion 161C, and covering portion 161B is connected between covering portions 161A and 161C and together with covering portions 161A and 161C forms a notch. Covering portions 161A and 161C respectively contact surfaces C1 and C3 of the diffusion plate 151, thereby clamping the diffusion plate 151. In some embodiments, the covering portion 161B of the holding portion 161 contacts surface C2 of the diffusion plate 151. In some embodiments, the hanging portion 162 is connected to the covering portion 161C and extends away from the covering portion 161A or the diffusion plate 151.

[0076] As Figure 2 with Figure 3 shown, in some embodiments, the edge of the diffusion plate 151 has a notch 153, and the holding portion 161 of the fixing member 160 is disposed in the notch 153. In this way, the fixing member 160 can be firmly clamped on the diffusion plate 151. In some embodiments, the depth of the notch 153 is greater than or equal to the thickness of the fixing member 160 (for example: the thickness of the covering portion 161B), so that after the fixing member 160 is combined with the diffusion plate 151, the overall structure will not have protrusions at the edge.

[0077] As Figure 2 with Figure 3 shown, in some embodiments, the hanging portion 162 of the fixing member 160 includes a hook 163, and the hook 163 is located at the end of the hanging portion 162 away from the holding portion 161. The setting of the hook 163 helps to prevent the optical film 152 from detaching from the hanging portion 162. In some embodiments, the hanging portion 162 includes a first section 162A and a second section 162B, the first section 162A is connected to the holding portion 161, and the second section 162B is connected to the first section 162A and extends obliquely to the first section 162A.

[0078] As Figure 2 shown, in some embodiments, in the first direction D1, the side wall portion 132 extends beyond the platform portion 133, so that the side wall portion 132 can serve as the frame of the display device 100. Since the entire housing 130 does not extend to the side of the display panel 110 adjacent to the first surface 111, when the user views the display device 100 from the front, only the flat side wall portion 132 located outside the display panel 110 can be seen, so the display device 100 has a narrow frame appearance.

[0079] AsFigure 2 As shown, in some embodiments, the platform portion 133 has a surface 134 away from the backplane portion 131, and the sidewall portion 132 has an end 136 away from the backplane portion 131. In the first direction D1, the distance between the end 136 of the sidewall portion 132 and the bottom surface B of the backplane portion 131 is greater than the distance between the surface 134 of the platform portion 133 and the bottom surface B of the backplane portion 131. In some embodiments, the sidewall portion 132 includes a bent portion 135 that connects the platform portion 133. In the first direction D1, the bent portion 135 extends beyond the platform portion 133.

[0080] As Figure 2 shown, in some embodiments, in the first direction D1, the sidewall portion 132 extends beyond the first surface 111 (i.e., the display surface) of the display panel 110, or is aligned with the first surface 111. In some embodiments, in the first direction D1, the distance between the end 136 of the sidewall portion 132 and the bottom surface B of the backplane portion 131 is greater than or equal to the distance between the first surface 111 of the display panel 110 and the bottom surface B of the backplane portion 131.

[0081] The following refers to Figures 4 to 6 introduce the assembly method of the backlight module 120. The assembly method of the backlight module 120 may include steps S1 to S5.

[0082] As Figure 4 shown, first, in step S1, the fixing member 160 is clamped at the edge of the diffusion plate 151. In some embodiments, step S1 includes: clamping the holding portion 161 of the fixing member 160 into the notch 153 of the diffusion plate 151.

[0083] As Figure 5 shown, then, in step S3, the optical film 152 is disposed on the diffusion plate 151 and sleeved on the hanging portion 162 of the fixing member 160, so that the fixing member 160, the diffusion plate 151, and the optical film 152 are combined. In some embodiments, step S3 includes: passing the hanging portion 162 of the fixing member 160 through the through hole H of the optical film 152. In some embodiments, the assembly method of the backlight module 120 further includes: disposing an adhesive between the diffusion plate 151 and the optical film 152 to paste and fix the diffusion plate 151 and the optical film 152.

[0084] As Figure 6As shown, finally, in step S5, the combined fixing member 160, diffusion plate 151, and optical film 152 are loaded into the housing 130 such that the edges of the fixing member 160, diffusion plate 151, and optical film 152 are located in the groove 138 of the housing 130. In some embodiments, step S5 includes: sliding the combined fixing member 160, diffusion plate 151, and optical film 152 into the groove 138 of the housing 130 along a second direction D2 that is substantially perpendicular to the first direction D1. In some embodiments, the method of assembling the backlight module 120 further includes: fixing the diffusion plate 151 to the housing 130.

[0085] Compared with the prior art, the method of assembling the backlight module 120 of the present disclosure first uses the fixing member 160 to combine the diffusion plate 151 and the optical film 152, and then loading the three together into the housing 130 is more time-saving and less likely to cause scratches on the diffusion plate 151 and the optical film 152, thereby improving production efficiency and quality.

[0086] In some embodiments, after assembling the backlight module 120, the display panel 110 can be fixed to the platform portion 133 of the housing 130 to complete the assembly of the display device 100.

[0087] Please refer to Figure 7 and Figure 8 . In the present embodiment, the covering portion 261B of the holding portion 261 of the fixing member 260 includes a first section 264A and a second section 264B. The first section 264A and the second section 264B are respectively connected between the covering portions 161A and 161C and are separated from each other, such that a hollow area is formed between the first section 264A and the second section 264B. The edge of the diffusion plate 251 has two notches 253. The first section 264A and the second section 264B are respectively disposed in the two notches 253, and the relatively protruding portion between the two notches 253 is inserted into the hollow area between the first section 264A and the second section 264B.

[0088] As Figure 7 and Figure 8 shown, in addition, the hanging portion 262 of the fixing member 260 may not have a hook structure. In the present embodiment, the hanging portion 262 includes a single straight section connected to the covering portion 161C of the holding portion 261, and the hanging portion 262 may extend perpendicular to or inclined to the covering portion 161C.

[0089] Please refer to Figure 9. In the present embodiment, the fixing member 360 includes a holding portion 361 substantially in an L shape, which abuts against a corner of the diffusion plate 351. Specifically, the holding portion 361 includes connected covering portions 361A and 361B, and the covering portions 361A and 361B are respectively used to contact adjacent surfaces C1 and C2 of the diffusion plate 351 and are separated from the surface C3 of the diffusion plate 351. The structure of the fixing member 360 in the present embodiment is simple, so it is easy to manufacture (for example: the bending process can be simplified).

[0090] As Figure 9 shown, in some embodiments, the hanging portion 362 of the fixing member 360 is connected to the covering portion 361A, and the hanging portion 362 and the covering portion 361B are on the same side of the covering portion 361A. In other words, the hanging portion 362 and the covering portion 361B extend in the same direction. In some embodiments, the covering portion 361A is located on the side of the diffusion plate 351 away from the optical film 152, and the hanging portion 362 extends through the diffusion plate 351 (for example: the hanging portion 362 can extend through a notch 353 on the edge of the diffusion plate 351) and passes through the through hole H of the optical film 152. Through the above configuration, the fixing member 360 can be firmly clamped on the diffusion plate 351.

[0091] As Figure 9 shown, in some embodiments, the covering portion 361B includes a first section 364A and a second section 364B that are separated from each other. In the direction in which the first section 364A and the second section 364B are arranged, the hanging portion 362 is located between the first section 364A and the second section 364B of the covering portion 361B. Through the above configuration, the fixing member 360 can stably abut against the diffusion plate 351.

[0092] As Figure 9 shown, in some embodiments, the diffusion plate 351 further has two bosses 354, and the two bosses 354 are located on both sides of the notch 353. The first section 364A and the second section 364B of the covering portion 361B respectively abut against the two bosses 354.

[0093] In summary, in the backlight module disclosed herein, the diffusion plate and the optical film are combined through the fixing member, and the housing of the backlight module is an integrally formed structure and has a groove, and the edges of the diffusion plate and the optical film and the fixing member can be accommodated in the groove. In this way, the backlight module disclosed herein can achieve the fixation of the diffusion plate and the optical film while maintaining the integrity of the appearance, and there is no need to be equipped with additional appearance components to beautify the appearance and prevent light leakage.

[0094] Although the present disclosure has been disclosed as above in embodiments, it is not intended to limit the present disclosure. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the scope defined by the appended claims.

Claims

1. A backlight module, characterized in that, Comprising: A housing having a groove disposed along an edge of the housing. The housing is an integrally formed metal housing and includes a back plate portion, a side wall portion, and a platform portion. The platform portion is opposite to the back plate portion, and the side wall portion connects the back plate portion and the platform portion. The groove is formed between the side wall portion, the back plate portion, and the platform portion. The side wall portion includes a bent portion located outside the platform portion and extending beyond the platform portion; A diffuser plate disposed in the housing, and an edge of the diffuser plate is located in the groove of the housing; An optical film disposed on the diffuser plate and having a through hole; A fixing member disposed in the groove of the housing and including a holding portion and a hanging portion. The holding portion is clamped to the edge of the diffuser plate, and the hanging portion connects the holding portion and extends through the through hole of the optical film. The diffuser plate has a first surface, a second surface, and a third surface. The third surface is opposite to the first surface, and the second surface is connected between the first surface and the third surface. The holding portion of the fixing member includes a first covering portion and a second covering portion connected to each other. The first covering portion and the second covering portion respectively contact the first surface and the second surface of the diffuser plate, and the holding portion is separated from the third surface of the diffuser plate. The hanging portion of the fixing member is connected to the first covering portion, and the hanging portion and the second covering portion are bent in the same direction relative to the first covering portion. The hanging portion is separated from the second covering portion, and in a direction perpendicular to the edge of the diffuser plate in the plane where the diffuser plate is located, the hanging portion and the second covering portion are misaligned. The hanging portion extends through the diffuser plate; and A light source disposed on the back plate portion of the housing.

2. The backlight module according to claim 1, wherein The light source, the diffuser plate, and the optical film are arranged in a first direction. The platform portion of the housing is used to carry a display panel. In the first direction, the side wall portion of the housing extends beyond the platform portion.

3. A display device, characterized in that, Comprising: A backlight module as described in claim 1; and A display panel disposed on the platform portion of the housing.

4. The display device according to claim 3, characterized in that, The light source, the diffuser plate, and the optical film of the backlight module are arranged in a first direction. The side wall portion of the housing connects the platform portion and extends along an outer edge of the display panel, and in the first direction, the side wall portion extends beyond a display surface of the display panel or is aligned with the display surface.

5. A method for assembling a backlight module, characterized in that, Comprising: Clamping a holding portion of a fixing member to an edge of a diffuser plate; Disposing an optical film on the diffuser plate and sleeving the optical film on a hanging portion of the fixing member to combine the fixing member, the diffuser plate, and the optical film; and The combined fixing member, the diffusion plate and the optical film are placed into a housing, such that the edges of the fixing member and the diffusion plate are located in a groove of the housing, wherein the groove is disposed along the edge of the housing, wherein the housing is an integrally formed metal housing and includes a back plate portion, a side wall portion and a platform portion, the platform portion is opposite to the back plate portion, the side wall portion connects the back plate portion and the platform portion, the groove is formed between the side wall portion, the back plate portion and the platform portion, wherein the side wall portion includes a bent portion, the bent portion is located outside the platform portion and extends beyond the platform portion, wherein the holding portion includes a first covering portion and a second covering portion connected to each other, the first covering portion and the second covering portion respectively contact two adjacent surfaces of the diffusion plate, wherein the hanging portion connects the first covering portion, and the hanging portion and the second covering portion are bent in the same direction relative to the first covering portion, the hanging portion is separated from the second covering portion, and in a direction perpendicular to the edge of the diffusion plate in the plane where the diffusion plate is located, the hanging portion and the second covering portion are arranged in a staggered manner, wherein the hanging portion extends through the diffusion plate.

6. The assembling method of the backlight module according to claim 5, wherein, The diffusion plate and the optical film are arranged in a first direction, wherein the step of placing the combined fixing member, the diffusion plate and the optical film into the housing includes: Sliding the combined fixing member, the diffusion plate and the optical film into the groove along a second direction, wherein the second direction is substantially perpendicular to the first direction.

Images