A liquid crystal module backlight, a liquid crystal module, and an electronic device.

Abstract

This application relates to a backlight for a liquid crystal module, a liquid crystal module, and an electronic device, including a light-emitting component and a frame assembly. The light-emitting component includes a backplate, a reflective sheet, a light guide plate, and an optical film assembly. The backplate has the reflective sheet, light guide plate, and optical film assembly stacked from top to bottom. The frame assembly includes two first frames and two second frames, which are alternately arranged around the light-emitting component. Each first and second frame has a top plate, a side plate, and a bottom plate. A mounting groove is provided on the side of each first and second frame facing the light-emitting component. A positioning post protrudes from the side of the light guide plate. A positioning hole is provided on the optical film assembly to cooperate with the positioning post for fixing the optical film assembly. The end of the light-emitting component is disposed in the mounting groove. A locking block is provided on the side of the top plate near the optical film assembly, and the locking block clamps and fixes the post with the side plate. This application helps to reduce the bezel distance of the display screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optoelectronic devices, in particular to a liquid crystal module backlight, a liquid crystal module and an electronic device. BACKGROUND

[0002] With the rapid development of the electronic industry, liquid crystal display screen products are continuously developing towards narrow frame and high heat dissipation, but the frame of the liquid crystal display screen backlight limits the frame of the display screen product.

[0003] In the related art, when the frame of each liquid crystal display is too large, the existing display backlight module assembles the light guide plate, the back plate, the optical film and the frame to form a backlight module. However, the side edge of the backlight module has a large gap between the light guide plate and the backlight module because the side edge of the backlight module includes the frame and the back plate formed by plastic at the same time.

[0004] Therefore, there is an urgent need for a liquid crystal module backlight. SUMMARY

[0005] In order to reduce the frame distance of the liquid crystal display screen, the present application provides a liquid crystal module backlight, a liquid crystal module and an electronic device.

[0006] The following technical solutions are adopted:

[0007] A liquid crystal module backlight includes a light emitting assembly and a glue frame assembly. The light emitting assembly includes a back plate, a reflective sheet, a light guide plate and an optical film set. The back plate is stacked from bottom to top with the reflective sheet, the light guide plate and the optical film set. The glue frame assembly includes two first glue frames and two second glue frames. The first glue frame and the second glue frame are alternately arranged on the side of the light emitting assembly. The glue frame has a top plate, a side plate and a bottom plate. An installation groove is formed on the side of the glue frame facing the light emitting assembly. The end of the light emitting assembly is arranged in the installation groove. A positioning column is protruded on the upper side of the light guide plate. A positioning hole is formed on the optical film set to cooperate with the positioning column to fix the optical film set. A clamping block is arranged on the side of the top plate close to the optical film set. The side of the clamping block facing the side plate is in contact with the positioning column.

[0008] By adopting the technical scheme, the light emitting assembly is fixed by four sequentially connected glue frames, i.e., the back plate, the reflecting sheet, the light guide plate and the optical film set in the light emitting assembly are sequentially stacked and mounted in the mounting groove of the glue frame to fix the light emitting assembly, one end of the light guide plate close to the side plate is provided with a positioning column, the optical film set is provided with a positioning hole matched with the positioning column, the positioning hole of the optical film set is sleeved on the positioning column of the light guide plate, so that the optical film set and the light guide plate are relatively fixed, the relative displacement between the optical film set and the light guide plate is avoided, the light guide plate is prevented from being scratched, the edges of the optical film set do not need to be provided with ears to fix the optical film set, correspondingly, the distance between the glue frame and the optical film set can be reduced, the narrow frame design is further realized, meanwhile, the positioning column is clamped by the clamping block and the side plate of the glue frame, the stability of the installation of the light emitting assembly is further improved, and the clamping block can facilitate the installation of the light emitting assembly.

[0009] Optionally, a fixing column is arranged on the side of the side plate facing the light emitting assembly, and the positioning column is provided with an insertion hole matched with the fixing column, and the fixing column is arranged to pass through the insertion hole.

[0010] By adopting the technical scheme, the fixing column passes through the insertion hole arranged on the positioning column, so that the glue frame can further fix the light emitting assembly through the fixing column, and the part of the fixing column protruding from the insertion hole can just clamp the optical film set, so that the optical film set is prevented from relatively displacing with the light guide plate.

[0011] Optionally, the bottom surface of the fixing column is in abutment with the top surface of the optical film set, or the distance between the fixing column and the top surface of the light guide plate without the positioning column is greater than the thickness of the optical film set.

[0012] By adopting the technical scheme, the bottom surface of the fixing column is in abutment with the top surface of the optical film set, so that the optical film set can be positioned up and down, the optical film set is prevented from moving up and down, and the distance between the fixing column and the top surface of the light guide plate without the positioning column is greater than the thickness of the optical film set, so that the diffusion sheet, the prism sheet and the brightness enhancement film in the optical film set are prevented from being scratched by the glue frame due to thermal expansion.

[0013] Optionally, the side away from the positioning column of the clamping block is provided with a circular chamfer.

[0014] By adopting the technical scheme, the cross section of the clamping block is provided with a fan shape, and when the light emitting assembly is assembled with the glue frame, the arc surface of the clamping block is helpful for the positioning column to be clamped into the groove composed of the clamping block, the top plate and the side plate, and is helpful for improving the installation efficiency of the light emitting assembly.

[0015] Optionally, the positioning column is arranged at the edge of the light guide plate, and the clamping block and the side plate clamp the positioning column.

[0016] By adopting the technical scheme, the optical film group to be installed is fixed by the positioning column arranged at the edge of the light guide plate, the positioning column is clamped and positioned by the clamping block and the side plate, and the light emitting assembly is fixed as a whole, so that the stability of the light emitting assembly installation is effectively improved. Meanwhile, the positioning column arranged at the edge of the light guide plate can reduce the area occupied by the optical film, improve the display area of the display panel, and shorten the distance between the frame assembly and the light emitting assembly, so that the narrow frame design is realized.

[0017] Optionally, the back plate is arranged in a stepped type, and the bottom surface of the side plate is flush with the bottom surface of the back plate.

[0018] By adopting the technical scheme, the back plate is arranged between the reflecting sheet, the side plate and the bottom plate, so that the area occupied by the back plate in the backlight source is reduced, the thickness of the backlight source is reduced, and the back plate is arranged in a stepped type, so that the backlight source is flat and beautiful.

[0019] Optionally, the first glue frame is provided with a clamping block at both ends, and the second glue frame is provided with a clamping groove matched with the clamping block at both ends.

[0020] By adopting the technical scheme, the first glue frame and the second glue frame are installed in cooperation, so that the front and rear directions of the first glue frame and the second glue frame are fixed, and the glue frame assembly can stably clamp the light emitting assembly.

[0021] Optionally, the optical film group comprises a diffusion sheet, a prism sheet and a brightness enhancement film arranged in sequence from bottom to top.

[0022] By adopting the technical scheme, the diffusion sheet for improving the uniformity of light source brightness, the prism sheet for improving the light source brightness, and the brightness enhancement film for improving the light emitting efficiency of the light source are arranged in sequence, so that the light emitted by the backlight source can be effectively improved.

[0023] A liquid crystal module comprises the backlight source of the liquid crystal module.

[0024] By adopting the technical scheme, the backlight source of the liquid crystal module is applied to the liquid crystal module, so that the frame distance of the glue frame can be reduced, the narrow frame setting of the glue frame can be realized, and the area of the display area can be improved.

[0025] An electronic device comprises the liquid crystal module.

[0026] By adopting the technical scheme, the liquid crystal module is applied to the electronic device, so that the area of the display area occupied by the glue frame can be effectively reduced, the area of the display area of the electronic device can be improved, and the aesthetic degree of the liquid crystal display device can be enhanced.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. The light-emitting assembly is fixed by four sequentially connected rubber frames, that is, the back plate, the reflecting sheet, the light guide plate and the optical film group in the light-emitting assembly are sequentially stacked and installed in the mounting groove of the rubber frame, so as to fix the light-emitting assembly, and the end of the light guide plate close to the side plate is provided with a positioning column, the optical film group is provided with a positioning hole matched with the positioning column, the positioning hole of the optical film group is sleeved on the positioning column of the light guide plate, so that the optical film group and the light guide plate are relatively fixed, the relative displacement between the optical film group and the light guide plate is avoided, the light guide plate is not scratched, the edge of the optical film group does not need to be provided with ears to fix the optical film group, correspondingly, the distance between the rubber frame assembly and the optical film group can be shortened, and the narrow frame design is further realized;

[0029] 2. The rubber frame assembly can be better fixed with the light-emitting assembly by arranging the fixing column on the side of the rubber frame facing the light-emitting assembly, and arranging the matched insertion hole on the positioning column of the light guide plate, so that the optical film group and the light guide plate and the light guide plate and the rubber frame assembly are fixed;

[0030] 3. The optical film group to be installed is fixed by the four positioning columns on the light guide plate, the clamping block and the side plate clamp the positioning column, the light-emitting assembly is fixed as a whole, the stability of the light-emitting assembly installation is effectively improved, meanwhile, the positioning column arranged at the edge of the light guide plate can reduce the area occupied by the optical film, improve the display area of the display panel and shorten the distance between the rubber frame assembly and the light-emitting assembly, and the narrow frame design is realized. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a structure schematic diagram of a liquid crystal module backlight source provided by the first embodiment of the application;

[0032] Figure 2 is Figure 1 a sectional view of A-A' in

[0033] Figure 3 is Figure 1 a top view of the rubber frame in

[0034] Figure 4 is a sectional view of a liquid crystal module backlight source provided by the second embodiment of the application;

[0035] Figure 5 is a sectional view of a liquid crystal module backlight source provided by the third embodiment of the application;

[0036] Figure 6 is a sectional view of a liquid crystal module backlight source provided by the fourth embodiment of the application;

[0037] Figure 7 isFigure 6 Enlarged view at middle B.

[0038] Reference signs: 100, 200, 300, 400 - liquid crystal module backlight; 1 - light emitting assembly; 11 - back plate; 12 - reflecting sheet; 13 - light guide plate; 131 - positioning column; 132 - insertion hole; 133 - fixing groove; 14 - optical film set; 141 - diffusion sheet; 142 - prism sheet; 143 - brightness enhancement film; 144 - positioning hole; 2 - glue frame assembly; 21 - first glue frame; 211 - top plate; 212 - side plate; 213 - bottom plate; 214 - mounting groove; 215 - clamping block; 216 - fixing column; 217 - clamping block; 22 - second glue frame; 221 - clamping groove. DETAILED DESCRIPTION

[0039] The following description will be made in conjunction with the accompanying drawings: Figures 1-7 The liquid crystal module backlight is further described in detail. The following embodiments are used to illustrate the present application, but not to limit the scope of the present application.

[0040] In the description of the present application, it should be understood that the terms "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0041] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] Reference Figure 1 and Figure 2 The present embodiment provides a liquid crystal module backlight, which comprises a light emitting assembly 1 and a glue frame assembly 2. The light emitting assembly 1 comprises a back plate 11, a reflecting sheet 12, a light guide plate 13 and an optical film set 14, and the back plate 11 is stacked from bottom to top with the reflecting sheet 12, the light guide plate 13 and the optical film set 14.

[0043] The glue frame assembly 2 comprises two first glue frames 21 and two second glue frames 22, the first glue frames 21 and the second glue frames 22 are arranged alternately on the side of the light emitting assembly 1, the side of the first glue frames 21 and the second glue frames 22 facing the light emitting assembly 1 is provided with a mounting groove 214, and the end of the light emitting assembly 1 is arranged in the mounting groove 214.

[0044] Reference Figure 3 In the embodiment, the first glue frames 21 are provided with clamping blocks 217 at both ends, and the second glue frames 22 are provided with clamping grooves 221 at both ends matched with the clamping blocks 217. The first glue frames 21 and the second glue frames 22 are installed in cooperation, the four ends of the light emitting assembly 1 respectively extend into the mounting grooves 214 of the glue frames of corresponding lengths, and the light emitting assembly 1 is fixed, so as to improve the stability of the installation of the light emitting assembly 1, and further ensure the fixation of the front and rear directions of the first glue frames 21 and the second glue frames 22, so that the glue frame assembly 2 can tightly clamp the light emitting assembly 1. The direction indicated by X is the front direction.

[0045] The positioning column 131 is protruded on the upper side of the light guide plate 13, and the positioning hole 144 matched with the positioning column 131 is arranged on the optical film group 14, so as to fix the optical film group 14. The positioning column 131 is a transparent column, and the positioning column 131 is integrally injection molded with the light guide plate 13, so that the positioning column 131 is convenient to process and is not easy to be damaged.

[0046] The first glue frames 21 and the second glue frames 22 all have top plates 211, side plates 212 and bottom plates 213, the end of the light emitting assembly 1 is arranged in the mounting groove 214, the side of the top plate 211 close to the optical film group is provided with a clamping block 215, and the side of the clamping block 215 facing the side plate 212 abuts against the positioning column 131. The optical film group 14 is fixed on the light guide plate 13, and the transparent column of the light guide plate 13 is fixed through the groove composed of the clamping block 215, the side plate 212 and the top plate 211, so as to prevent the optical film group 14 from falling off.

[0047] In the embodiment, the side of the two first glue frames 21 and the two second glue frames 22 facing the light emitting assembly 1 is provided with a fixing column 216, the positioning column 131 is provided with a insertion hole 132 matched with the fixing column 216, the insertion hole 132 penetrates the fixing column 216, and the fixing column 216 penetrates out of the insertion hole 132. In other embodiments, the insertion hole 132 can not penetrate the fixing column 216, and the fixing column 216 is inserted into the insertion hole 132.

[0048] The fixing column 216 penetrates out of the insertion hole 132, so that the glue frame can further fix the light emitting assembly 1 through the fixing column 216, and the bottom surface of the fixing column 216 abuts against the upper surface of the optical film group 14, the part of the fixing column 216 outside the insertion hole 132 can just clamp the optical film group 14, so that the optical film group 14 can avoid relative displacement with the light guide plate 13 as much as possible.

[0049] In one example, the top plate 211 of the glue frame can be provided with a support groove, and the top end of the positioning column 131 is inserted into the support groove. By cooperating with the positioning column 131, the design of inserting the positioning column 131 into the support groove can prevent the optical film from being pulled out of the positioning column 131, and improve the reliability of the clamping of the light guide plate 13 and the optical film group 14. The clamping block 215 is arranged on one side of the top plate 211 of the glue frame close to the optical film group 14, the clamping block 215 clamps the fixed column 216 with the side plate 212, and the positioning column 131 is clamped in the groove formed by the clamping block 215, the side plate 212 and the top plate 211.

[0050] In the embodiment, the optical film group 14 includes a diffusion sheet 141, a prism sheet 142 and a brightness enhancement film 143 arranged from bottom to top. By arranging the diffusion sheet 141 for improving the uniformity of the light source brightness, the prism sheet 142 for improving the light source brightness and the brightness enhancement film 143 for improving the light emitting efficiency of the light source in sequence, the light emitted by the backlight source can be effectively improved.

[0051] Specifically, the diffusion sheet 141 is used to uniformly disperse the light emitted by the light guide plate 13 and then transmit the light to the prism sheet 142, the prism sheet 142 further improves the front brightness of the display screen, and finally the light emitted by the prism sheet 142 is transmitted through the brightness enhancement film 143 to enhance the light intensity and provide sufficient light for the display.

[0052] In the embodiment, the bottom surface of the fixed column 216 abuts against the top surface of the optical film group 14, or the distance between the fixed column 216 and the top surface of the light guide plate 13 without the positioning column 131 is greater than the thickness of the optical film group 14.

[0053] The bottom surface of the fixed column 216 abuts against the top surface of the optical film group 14, or the distance between the fixed column 216 and the top surface of the light guide plate 13 without the positioning column 131 is greater than the thickness of the optical film group 14. By the above arrangement, the optical film group 14 can be prevented from moving up and down, and at the same time, gaps can exist between the diffusion sheet 141, the prism sheet 142 and the brightness enhancement film 143 in the optical film group 14 to avoid the diffusion sheet 141, the prism sheet 142 and the brightness enhancement film 143 in the optical film group 14 from being scratched due to thermal expansion.

[0054] The light emitting assembly 1 is fixed by four sequentially connected glue frames, that is, the back plate 11, the reflecting sheet 12, the light guide plate 13 and the optical film group 14 in the light emitting assembly 1 are sequentially stacked and installed in the mounting groove 214 of the glue frame to fix the light emitting assembly 1, and one end of the light guide plate 13 close to the side plate 212 is provided with a positioning column 131, the optical film group 14 is provided with a positioning hole 144 matched with the positioning column 131, the positioning hole 144 of the optical film group 14 is sleeved on the positioning column 131 of the light guide plate 13, so that the optical film group 14 and the light guide plate 13 are relatively fixed, and the relative displacement between the optical film group 14 and the light guide plate 13 is avoided to prevent the light guide plate 13 from being scratched, and the edge of the optical film group 14 does not need to be provided with an ear to fix the optical film group 14, and accordingly, the distance between the glue frame assembly 2 and the optical film group 14 can be reduced, and the narrow frame design is further realized.

[0055] Referring to Figure 4 , Figure 4 A structure schematic diagram of a liquid crystal module backlight 200 provided by the second embodiment of the application, the structure of the liquid crystal module backlight 200 provided by the second embodiment is basically the same as that of the liquid crystal module backlight 100 of the first embodiment, and the difference lies in that in the present embodiment, the positioning column 131 is not provided with a fixing hole, and the first glue frame 21 and the second glue frame 22 are not provided with the fixing column 216, and the light emitting assembly 1 is only clamped by the clamping block 215.

[0056] By canceling the fixing hole and the fixing column 216, the thickness of the backlight is reduced to meet the requirement of thinning the display.

[0057] Referring to Figure 5 , Figure 5 A structure schematic diagram of a liquid crystal module backlight 300 provided by the third embodiment of the application, the structure of the liquid crystal module backlight 300 provided by the second embodiment is basically the same as that of the liquid crystal module backlight 100 of the first embodiment, and the difference lies in that in the present embodiment, the edge of the light guide plate 13 is provided with the positioning column 131, the optical film group 14 is arranged between the four positioning columns 131, the clamping block 215 and the side plate 212 clamp the positioning column 131, and the positioning column 131 is provided with a fixing groove 133, and the fixing column 216 is clamped in the fixing groove 133.

[0058] The optical film group 14 to be installed is fixed through the four positioning columns 131 on the light guide plate 13, the clamping block 215 and the side plate 212 clamp the positioning column 131, and the light emitting assembly 1 is fixed as a whole, which can effectively improve the stability of the installation of the light emitting assembly 1. At the same time, the positioning column 131 arranged at the edge of the light guide plate 13 can reduce the area of the optical film group 14, improve the display area of the display panel, and shorten the distance between the frame assembly and the light emitting assembly 1, and realize the narrow frame design. The fixing groove 133 on the positioning column 131 is matched with the fixing column 216 protruding from the frame, so that the frame and the light emitting assembly 1 are tightly connected, and the stability of the installation of the frame and the light emitting assembly 1 is improved.

[0059] In the embodiment, the back plate 11 is arranged in a stepped type, and the back plate 11 is arranged between the reflective sheet 12, the side plate 212 and the bottom plate 213, which can reduce the area occupied by the back plate 11 in the backlight source, so as to reduce the thickness of the backlight source. At the same time, the back plate 11 is arranged in a stepped type, so that the backlight source is flat and beautiful.

[0060] Please refer to Figure 6 , Figure 6 A structure diagram of a liquid crystal module backlight source 400 provided by the fourth embodiment of the present application, the structure of the liquid crystal module backlight source 400 provided by the fourth embodiment is basically the same as that of the liquid crystal module backlight source 100 of the second embodiment, and the difference lies in that in the embodiment, the side of the clamping block 215 away from the positioning column 131 is arranged as a circular chamfer.

[0061] When the light emitting assembly 1 needs to be clamped into the first frame 21 or the second frame 22, the clamping block 215 with the arc is helpful for the clamping of the frame and the positioning column 131.

[0062] Please refer to Figure 7 The cross section of the clamping block 215 is arranged as a sector, and when the light emitting assembly 1 and the frame are assembled, the clamping block 215 arranged as an arc surface is helpful for the clamping of the positioning column 131 into the groove composed of the clamping block 215, the top plate 211 and the side plate 212, and is helpful for improving the installation efficiency of the light emitting assembly 1.

[0063] In one example, the end of the positioning column 131 away from the clamping block 215 is also arranged as a circular chamfer, and through the two clamping blocks 215 and the positioning column 131 with arc surfaces, the clamping effect of the clamping block 215 and the positioning column 131 can be improved.

[0064] A liquid crystal module, comprising any one of the above-mentioned liquid crystal module backlight sources.

[0065] The liquid crystal module backlight source is applied to the liquid crystal module, which can reduce the frame distance of the frame, realize the narrow frame setting of the frame, and improve the area of the display area.

[0066] The electronic device comprises the liquid crystal module.

[0067] The liquid crystal module is applied to the electronic device, so that the area of the adhesive frame in the display area is effectively reduced, the area of the display area of the electronic device is further improved, and the aesthetic degree of the liquid crystal display device is enhanced.

[0068] The embodiments of the specific implementation are the preferred embodiments of the application, but do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A liquid crystal module backlight, characterized by, The application relates to a liquid crystal module backlight source, which comprises a light-emitting assembly (1) and a rubber frame assembly (2), wherein the light-emitting assembly (1) comprises a back plate (11), a reflecting sheet (12), a light guide plate (13) and an optical film piece group (14), the back plate (11) is stacked from bottom to top with the reflecting sheet (12), the light guide plate (13) and the optical film piece group (14), the rubber frame assembly (2) comprises two first rubber frames (21) and two second rubber frames (22), the first rubber frames (21) and the second rubber frames (22) are alternately arranged on the side of the light-emitting assembly (1), the first rubber frames (21) and the second rubber frames (22) each have a top plate (211), a side plate (212) and a bottom plate (213), one side of the first rubber frames (21) and the second rubber frames (22) facing the light-emitting assembly (1) is provided with a mounting groove (214), the end of the light-emitting assembly (1) is arranged in the mounting groove (214), a positioning column (131) is arranged on the upper side of the light guide plate (13), a positioning hole (144) matched with the positioning column (131) is arranged on the optical film piece group (14) to fix the optical film piece group (14), a clamping block (215) is arranged on one side of the top plate (211) close to the optical film piece group (14), and the clamping block (215) is abutted against the positioning column (131) on one side facing the side plate (212); A fixing column (216) is arranged on one side of the side plate (212) facing the light-emitting assembly (1), and the positioning column (131) is provided with an insertion hole (132) matched with the fixing column (216), and the fixing column (216) penetrates out of the insertion hole (132).

2. The liquid crystal module backlight of claim 1, wherein: The bottom surface of the fixing column (216) is abutted against the top surface of the optical film piece group (14), or the distance between the fixing column (216) and the top surface of the light guide plate (13) without the positioning column (131) is greater than the thickness of the optical film piece group (14).

3. The liquid crystal module backlight of claim 1, wherein: One side of the clamping block (215) away from the positioning column (131) is provided with a circular chamfer.

4. The liquid crystal module backlight of claim 1, wherein: The back plate (11) is provided in a stepped type, and the bottom surface of the bottom plate (213) is flush with the bottom surface of the back plate (11).

5. The liquid crystal module backlight of claim 1, wherein: The first rubber frames (21) are each provided with a clamping block (217) at two ends, and the second rubber frames (22) are each provided with a clamping groove (221) matched with the clamping block (217) at two ends.

6. The liquid crystal module backlight of claim 1, wherein: The optical film piece group (14) comprises a diffusion sheet (141), a prism sheet (142) and a brightness enhancement film (143) arranged from bottom to top.

7. A liquid crystal module characterized by comprising: The application further discloses a liquid crystal module backlight source comprising the liquid crystal module backlight source.

8. An electronic device, comprising: The application further discloses a liquid crystal module comprising the liquid crystal module.

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