Backlight module and display module

Abstract

The utility model discloses a backlight module. A back plate of the backlight module comprises a back plate body, a side plate body and a supporting part. And the sum of the thickness of the back plate main body, the height of the side plate body and the thickness of the supporting part is less than 5.7 mm. The backlight module is small in thickness, simple in structure, light and thin, and convenient to install, move and transport. When the backlight module is installed and used, the occupied space of the backlight module is small, and space is saved. The utility model further provides a display module comprising the backlight module, and the display module has the beneficial effects.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and specifically relates to a backlight module and a display module. Background Art

[0002] The structure of the backlight module in the prior art is heavy. The heavy backlight module is thick, takes up a large space, and is heavy and inconvenient to install, move and transport. The heavy backlight module also affects the overall beauty of the display module.

[0003] Therefore, there is an urgent need for a backlight module with a thin and light structure and a simple structure. Utility Model Content

[0004] The purpose of the present application is to provide a backlight module, which has a simple structure, is thin and light, and has a small weight, and can reduce the occupied space.

[0005] To solve the above technical problems, the present application provides a backlight module, which includes a back panel, and the back panel includes a back panel body, a side panel body and a supporting part. The side panel body is arranged around the back panel body, and the supporting part is arranged on a side of the side panel body away from the back panel body.

[0006] The sum of the thickness of the back plate body, the height of the side plate body and the thickness of the support portion is less than 5.7 mm.

[0007] In one embodiment, the sum of the thickness of the back panel body, the height of the side panel body and the thickness of the support portion is 4.7 mm.

[0008] In one embodiment, the thickness of the back plate body is less than 0.8 mm.

[0009] In one embodiment, the back plate further includes a reinforcing rib, and the reinforcing rib is arranged on a side of the back plate body away from the side plate body.

[0010] The reinforcing rib includes a first reinforcing portion, a second reinforcing portion and a plurality of third reinforcing portions, the first reinforcing portion is an annular structure, the second reinforcing portion is an annular structure, the first reinforcing portion is located on the inner side of the second reinforcing portion, and the third reinforcing portion is connected between the first reinforcing portion and the second reinforcing portion.

[0011] In one embodiment, the back panel body, the side panel body and the support portion enclose a receiving cavity.

[0012] The backlight module further includes a light guide plate, which is disposed in the accommodating cavity and has a thickness of less than 2 mm.

[0013] In one embodiment, the backlight module further includes a reflective sheet, wherein the reflective sheet is located between the light guide plate and the back plate body, and the thickness of the reflective sheet is less than 0.25 mm.

[0014] In one embodiment, the thickness of the light guide plate is 1.5 mm, the thickness of the reflective sheet is 0.21 mm, the thickness of the back plate body is 0.5 mm, and the thickness of the reinforcing rib is 1.7 mm.

[0015] In one embodiment, the backlight module further includes a light emitting component, which is located in the accommodating cavity, between the light guide plate and the side plate, and disposed on a side of the side plate close to the light guide plate.

[0016] The light-emitting component includes a substrate and a plurality of light-emitting devices, wherein the plurality of light-emitting devices are arranged on the substrate at intervals, and the light-emitting device has a light-emitting surface, wherein the light-emitting surface faces the light guide plate, and a side of the light guide plate away from the back panel body protrudes from a side of the light-emitting device away from the back panel body.

[0017] In one embodiment, the backlight module has an effective display area, and the ratio of the distance from the light-emitting surface to the edge of the effective display area to the distance between the centers of two adjacent light-emitting devices is between 0.88 and 1.1.

[0018] The present application also provides a display module, including the above-mentioned backlight module, and also including a display panel, a flexible circuit board, a driving circuit board and a protective cover.

[0019] The display panel is arranged on a side of the support portion away from the back panel body, the driving circuit board is arranged on a side of the back panel away from the display panel, one end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is connected to the driving circuit board, one end of the protective cover is connected to the display panel, and the other end of the protective cover is connected to the back panel body, the protective cover covers the flexible circuit board and the driving circuit board, and the thickness of the protective cover is 0.03 to 0.29 mm.

[0020] The backlight module provided in the embodiment of the present application has a back panel including a back panel body, a side panel body and a support portion. The sum of the thickness of the back panel body, the height of the side panel body and the thickness of the support portion is less than 5.7 mm. That is, the thickness of the backlight module is relatively small, the structure is simple, thin and light, and it is easy to install, move and transport. When installed and used, the backlight module occupies a small space, saving space. The present application also provides a display module including the above-mentioned backlight module, which has the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a schematic diagram of the structure of a backlight module provided in an embodiment of the present application;

[0023] Figure 2 It is a structural schematic diagram of a back panel body and reinforcing ribs in a backlight module provided in an embodiment of the present application;

[0024] Figure 3 This is a simulation diagram of the deformation of the back plate body in the backlight module provided in the embodiment of the present application;

[0025] Figure 4 is a schematic diagram of an effective display area of ​​a backlight module provided in an embodiment of the present application;

[0026] Figure 5 It is a structural schematic diagram of a light guide plate and a light emitting device in a backlight module provided in an embodiment of the present application;

[0027] Figure 6 It is a structural schematic diagram of a display module provided in an embodiment of the present application.

[0028] Figure numerals: display module 1000; backlight module 100; display panel 200; flexible circuit board 300; driving circuit board 400; protective cover 500; back plate 110; light guide plate 120; reflective sheet 130; optical film layer 140; light-emitting component 150; back plate body 111; side plate body 112; supporting part 113; reinforcing rib 114; brightness enhancement film 141; diffusion film 142; substrate 151; light-emitting device 152; array substrate 210; opposing substrate 220; first polarizer P1; second polarizer P2; effective display area SA; first reinforcing part B; second reinforcing part C; third reinforcing part D; accommodating cavity U; opening K. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments of the utility model, any modifications made by those skilled in the art without creative work are within the scope of protection of the utility model.

[0030] It should be noted that in the description of the present application, it should be understood that the orientations or positional relationships indicated by “up”, “down”, “front”, “back”, “left”, “right”, “inside”, “outside”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0031] Please refer to Figure 1 . The backlight module 100 provided in the embodiment of the present application includes a back panel 110. The back panel 110 includes a back panel body 111, a side panel body 112 and a support portion 113. The side panel body 112 is arranged around the back panel body 111, and the support portion 113 is arranged on a side of the side panel body 112 away from the back panel body 111. The sum L1 of the thickness of the back panel body 111, the height of the side panel body 112 and the thickness of the support portion 113 is less than 5.7 millimeters (mm).

[0032] Optionally, the sum L1 of the thickness of the back panel body 111, the height of the side panel body 112 and the thickness of the support portion 113 is 5.5 mm, 5.3 mm, 5.0 mm, 4.8 mm, 4.7 mm, 4.5 mm or 4.0 mm, etc. In this embodiment, the sum L1 of the thickness of the back panel body 111, the height of the side panel body 112 and the thickness of the support portion 113 is 4.7 mm.

[0033] The backlight module 100 provided in the embodiment of the present application has a back plate 110 including a back plate body 111, a side plate body 112 and a support portion 113. The thickness of the back plate body 111, the height of the side plate body 112 and the thickness of the support portion 113 are small, and the structure of the backlight module 100 is simple, light and thin, and easy to install, move and transport. When installed and used, the backlight module 100 occupies a small space, saving space.

[0034] In this embodiment, the thickness L2 of the back plate body 111 is less than 0.8 mm. Optionally, the thickness L2 of the back plate body 111 is 0.75 mm, 0.7 mm, 0.65 mm, 0.6 mm, 0.55 mm, 0.5 mm, 0.45 mm or 0.4 mm.

[0035] Since the back panel body 111 needs to bear and support the weight of the light guide plate 120, the light emitting assembly 150, and the display panel 200 located on the backlight module 100, the back panel body 111 needs to have high strength and rigidity. Therefore, in the related art, the thickness of the back panel body is usually large.

[0036] Please refer to Figure 2In this embodiment, the back panel 110 further includes a reinforcing rib 114. The reinforcing rib 114 is disposed on the side of the back panel body 111 away from the side panel body 112. The reinforcing rib 114 disposed on one side of the back panel body 111 can increase the strength and rigidity of the back panel body 111 and increase the ability of the back panel body 111 to resist deformation. Therefore, in this application, the thickness L2 of the back panel body 111 is relatively small, but the ability of the back panel body 111 to resist deformation is relatively strong. It should be noted that the reinforcing rib 114 is a structure disposed separately on the back panel body 111 and is not included in the back panel body 111. Figure 1 Shown in.

[0037] The reinforcing rib 114 includes a first reinforcing portion B, a second reinforcing portion C and a plurality of third reinforcing portions D. The first reinforcing portion B is an annular structure, the second reinforcing portion C is an annular structure, and the first reinforcing portion B is located on the inner side of the second reinforcing portion C. The first reinforcing portion B and the second reinforcing portion C of the annular structure can uniformly improve the anti-deformation ability of various parts of the back plate body 111. In this embodiment, the first reinforcing portion B is an annular structure of a square ring, the second reinforcing portion C is a hexagonal annular structure, and the number of the third reinforcing portions D is eight. The third reinforcing portion D is connected between the first reinforcing portion B and the second reinforcing portion C, further strengthening the strength, rigidity and ability to resist deformation of the back plate body 111. Specifically, a third reinforcing portion D is connected to the top corner of the hexagonal ring of a second reinforcing portion C. The eight third reinforcing portions D extend in different directions. Optionally, the shape of the third reinforcing portion D is a straight line or a curved line. In this embodiment, the shape of the third reinforcing portion D is a straight line.

[0038] In this embodiment, the thickness of the back plate body 111 is 0.5 mm, and the thickness of the reinforcing rib 114 is 1.7 mm. When the reinforcing rib 114 includes a first reinforcing portion B, a second reinforcing portion C, and a plurality of third reinforcing portions D, and the thickness is 1.7 mm, the thickness of the back plate body 111 is 0.5 mm and has a strong anti-deformation ability, so it is not easy to deform. Since the cross-sectional widths of the first reinforcing portion B, the second reinforcing portion C, and the third reinforcing portion D are small, the area of ​​the reinforcing rib 114 set on one side of the back plate body 111 is also small, so the influence on the overall thickness of the backlight module 100 is small.

[0039] like Figure 3 As shown, only the central part of the backplane body 111 is deformed greatly due to force (the red area in the figure), mainly the part inside the first reinforcement part B. The edge part of the backplane body 111 is deformed less due to force (the blue area in the figure). It should be noted that the deformation of the backplane body 111 is larger in the reddish color, and the deformation of the backplane body 111 is smaller as the color changes from red to blue. In general, the deformation of the backplane body 111 is small and relatively uniform.

[0040] Optionally, a flange with a certain angle is provided on the edge of the back plate body 111 (not shown). The height of the flange is 2.83 mm. The flange is formed by stamping the edge of the back plate body 111 with a certain angle due to the effect of the mold when the back plate body 111 is formed.

[0041] Please refer again Figure 1 The backlight module 100 further includes a light guide plate 120, a light emitting assembly 150, a reflective sheet 130 and an optical film layer 140. The back panel body 111, the side panel body 112 and the support portion 113 form a receiving cavity U.

[0042] The light guide plate 120, the light emitting assembly 150 and the reflective sheet 130 are arranged in the accommodating cavity U. The reflective sheet 130 is arranged on the back plate body 111, and the light guide plate 120 is arranged on the reflective sheet 130. That is, the reflective sheet 130 is located between the light guide plate 120 and the back plate body 111. The light emitting assembly 150 is arranged on a side of the side plate body 112 close to the light guide plate 120. The light emitting assembly 150 is located between the light guide plate 120 and the side plate body 112.

[0043] Specifically, the thickness of the light guide plate 120 is less than 2 mm. For example, the thickness of the light guide plate 120 is 1.8 mm, 1.7 mm, 1.6 mm, 1.5 mm or 1.4 mm. The thickness of the light guide plate 120 is small, so that the thickness of the backlight module 100 is less restricted by the light guide plate 120. The back plate 110 does not need to be provided with a higher accommodating cavity U to place the light guide plate 120, so as to maintain a small thickness. In this embodiment, the thickness of the light guide plate 120 is 1.5 mm.

[0044] Optionally, since the light guide plate 120 is thinned, the dot setting can be optimized on the light incident side of the light guide plate 120 to improve the problem of light shadow. The dots on the light guide plate 120 are formed by printing.

[0045] The thickness of the reflector 130 is less than 0.25 mm. For example, the thickness of the reflector 130 is 0.24 mm, 0.23 mm, 0.22 mm, 0.21 mm or 0.2 mm. It can be understood that the thickness of the reflector 130 is relatively small, so that the thickness of the backlight module 100 is less restricted by the reflector 130. The space occupied by the reflector 130 in the accommodating cavity U is relatively small, which reduces the possibility of increasing the thickness of the back plate 110. In this embodiment, the thickness of the reflector 130 is 0.21 mm.

[0046] An opening K is provided on the support portion 113 of the back plate 110, and the light emitting surface of the light guide plate 120 is provided corresponding to the opening K. The light emitted by the light emitting component 150 enters the light guide plate 120 and is emitted from the opening K through the light emitting surface. The optical film layer 140 is provided on the light emitting surface of the light guide plate 120 and is located in the opening K. The side of the optical film layer 140 away from the back plate body 111 is lower than the side of the support portion 113 away from the back plate body 111, that is, the stacking of the optical film layer 140 does not exceed the side of the support portion 113 away from the back plate body 111, thereby avoiding increasing the overall thickness of the backlight module 100. Optionally, the optical film layer 140 is a two-layer film, a three-layer film, etc.

[0047] Specifically, the optical film layer 140 includes a brightness enhancement film 141 and a diffusion film 142. The brightness enhancement film 141 is located on the light guide plate 120, and the diffusion film 142 is located on the brightness enhancement film 141. In this embodiment, the brightness enhancement film 141 and the diffusion film 142 are both one layer, so as to reduce the thickness of the optical film layer 140, and the thickness of the corresponding support portion 113 can also be set to be smaller, further reducing the total thickness of the backlight module 100. Increasing the proportion of diffusion particles in the diffusion film 142 can improve the diffusion ability of the diffusion film 142, so that a layer of the diffusion film 142 can also achieve a strong diffusion effect, thereby improving the concealment of the backlight module 100.

[0048] The light emitting assembly 150 includes a substrate 151 and a plurality of light emitting devices 152. The plurality of light emitting devices 152 are arranged at intervals on the substrate 151. The light emitting device 152 has a light emitting surface, and the light emitting surface faces the light guide plate 120. The side of the light guide plate 120 away from the back plate body 111 protrudes from the side of the light emitting device 152 away from the back plate body 111, so that the light emitted by the light emitting device 152 through the light emitting surface enters the light guide plate 120 from the light incident side of the light guide plate 120, reducing the probability that the light emitted by the light emitting device 152 does not enter the light guide plate 120 but leaks from the side of the light guide plate 120 away from the back plate body 111.

[0049] The light emitting device 152 is a light emitting diode (LED). Since the thickness of the light guide plate 120 is reduced, the width of the LED light emitting surface should be reduced accordingly, so that the LED matches the light guide plate 120 to prevent light leakage. In this embodiment, the model of the LED is 4010, and the width L3 of the LED light emitting surface is 0.8 mm.

[0050] The backlight module 100 has an effective display area SA.

[0051] The display panel 200 is arranged on the backlight module 100 to form a display module. The display panel 200 has a display area for displaying, and the display area of ​​the display panel 200 is projected onto the light guide plate 120. The effective display area AA of the backlight module 100 refers to the positive projection area of ​​the display area of ​​the display panel 200 on the light guide plate 120, such as Figure 4 shown.

[0052] The light emitting surface of the light emitting device 152 is the light emitting surface of the light emitting device 152. Figure 5 , the distance from the light-emitting surface of the light-emitting device 152 to the edge of the effective display area SA of the backlight module 100 is A. The ratio of the distance from the light-emitting surface of the light-emitting device 152 to the edge of the effective display area SA to the spacing P between the centers of two adjacent light-emitting devices 152 is between 0.88 and 1.1. Optionally, the ratio P of the distance A from the light-emitting surface of the light-emitting device 152 to the edge of the effective display area SA to the spacing P between the centers of two adjacent light-emitting devices 152 is 0.88, 0.89, 0.9, 1.0 or 1.1, etc. In the present embodiment, the ratio of the distance A from the light-emitting surface of the light-emitting device 152 to the edge of the effective display area SA to the spacing P between the centers of two adjacent light-emitting devices 152 is 0.89, which can reduce the number of light-emitting devices 152, reduce costs, and achieve an extreme AP ratio. Optionally, optimizing the dot arrangement of the light guide plate 120 can alleviate the lamp shadow problem.

[0053] In this embodiment, the overall thickness of the backlight module 100 is reduced, and the cost of the backlight module 100 is reduced by 13%.

[0054] Please refer to Figure 6 The embodiment of the present application further provides a display module 1000. The display module 1000 includes the above-mentioned backlight module 100, and also includes a display panel 200, a flexible circuit board 300, a driving circuit board 400, a protective cover 500, a first polarizer P1 and a second polarizer P2.

[0055] The display panel 200 is disposed on the side of the support portion 113 away from the back plate body 111. The driving circuit board 400 is disposed on the side of the back plate 110 away from the display panel 200. One end of the flexible circuit board 300 is connected to the display panel 200, and the other end of the flexible circuit board 300 is connected to the driving circuit board 400.

[0056] One end of the protection cover 500 is connected to the display panel 200 , and the other end is connected to the back panel body 111 . The protection cover 500 covers the flexible circuit board 300 and the driving circuit board 400 .

[0057] Specifically, the display panel 200 includes an array substrate 210, a liquid crystal layer (not shown) and an opposing substrate 220. The array substrate 210 is located on the backlight module 100, and the opposing substrate 220 is located on a side of the array substrate 210 away from the backlight module 100. The array substrate 210 and the opposing substrate 220 are arranged opposite to each other, and the liquid crystal layer is located between the array substrate 210 and the opposing substrate 220. One end of the flexible circuit board 300 is bound to the array substrate 210. One end of the protective cover 500 is arranged on a side of the opposing substrate 220 away from the array substrate 210. The first polarizer P1 is located between the display panel 200 and the backlight module 100, that is, attached to a side of the array substrate 210 away from the opposing substrate 220. The second polarizer P2 is attached to a side of the opposing substrate 220 away from the array substrate 210. The second polarizer P2 is arranged in the same layer as the end of the protective cover 500, and the thickness of the protective cover 500 is less than or equal to the thickness of the second polarizer P2. The side of the second polarizer P2 away from the array substrate 210 protrudes from the side of the end of the protective cover 500 away from the array substrate 210, or the side of the second polarizer P2 away from the array substrate 210 is flush with the side of the end of the protective cover 500 away from the array substrate 210. It can be understood that the protective cover 500 is arranged on the side of the opposite substrate 220 away from the array substrate 210, and the protective cover 500 does not exceed the thickness of the second polarizer P2, which can avoid the increase of the thickness of the display module 1000. In this embodiment, the side of the second polarizer P2 away from the array substrate 210 protrudes from the side of the end of the protective cover 500 away from the array substrate 210.

[0058] In this embodiment, the thickness of the protective cover 500 is 0.03-0.29 mm, for example, 0.03 mm, 0.05 mm, 0.08 mm, 0.1 mm, 0.13 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.25 mm or 0.29 mm. In this embodiment, the protective cover 500 is bent to the side of the backlight module 100 away from the display panel 200 to shield the driving circuit board 400. The thickness of the protective cover 500 is 0.05 mm, which greatly reduces the local thickness of the display module 1000 at the driving circuit board 400. Since the protective cover 500 shields the flexible circuit board 300 on the outside of the flexible circuit board 300, the thickness of the protective cover 500 is reduced, and the frame of the display module 1000 is narrowed.

[0059] In addition, the material of the protective cover 500 is polyethylene terephthalate (PET). The protective cover 500 is made of polyethylene terephthalate and has a thickness of 0.05 mm, which can greatly reduce the cost. Compared with the thicker protective cover 500 made of metal, the protective cover 500 of this embodiment made of polyethylene terephthalate and having a thickness of 0.05 mm reduces the cost by 70%. Moreover, the protective cover 500 made of polyethylene terephthalate is softer and the shape is easy to control. While protecting the flexible circuit board 300 and the driving circuit board 400, the thickness and frame of the display module 1000 are further thinned.

[0060] Optionally, the display module 1000 further includes a color filter layer (not shown). Optionally, the color filter layer is disposed on the opposite substrate 220 side, or on the array substrate 210 side.

[0061] The backlight module 100 and the display module 1000 provided in the present application are introduced in detail above.

[0062] The backlight module provided in the embodiment of the present application has a back panel including a back panel body, a side panel body and a support portion. The sum of the thickness of the back panel body, the height of the side panel body and the thickness of the support portion is less than 5.7 mm. That is, the thickness of the backlight module is relatively small, the structure is simple, thin and light, and it is easy to install, move and transport. When installed and used, the backlight module occupies a small space, saving space. The present application also provides a display module including the above-mentioned backlight module, which has the above-mentioned beneficial effects.

[0063] The principles and implementation methods of the present application are described above, and the description of the above embodiments is only used to help understand the core idea of ​​the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the concept of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A backlight module, characterized in that: The backlight module comprises a back plate, the back plate comprises a back plate body, a side plate body and a support portion, the side plate body is arranged around the back plate body, and the support portion is arranged on a side of the side plate body away from the back plate body; The sum of the thickness of the back plate body, the height of the side plate body and the thickness of the support portion is less than 5.7 mm.

2. The backlight module according to claim 1, characterized in that: The sum of the thickness of the back plate body, the height of the side plate body and the thickness of the support portion is 4.7 mm.

3. The backlight module according to claim 1, characterized in that: The thickness of the back plate body is less than 0.8 mm.

4. The backlight module according to claim 3, characterized in that: The back plate further comprises a reinforcing rib, wherein the reinforcing rib is arranged on a side of the back plate body away from the side plate body; The reinforcing rib includes a first reinforcing portion, a second reinforcing portion and a plurality of third reinforcing portions, the first reinforcing portion is an annular structure, the second reinforcing portion is an annular structure, the first reinforcing portion is located on the inner side of the second reinforcing portion, and the third reinforcing portion is connected between the first reinforcing portion and the second reinforcing portion.

5. The backlight module according to claim 4, characterized in that: The back plate body, the side plate body and the support portion enclose an accommodating cavity; The backlight module further includes a light guide plate, which is disposed in the accommodating cavity and has a thickness of less than 2 mm.

6. The backlight module according to claim 5, characterized in that: The backlight module further comprises a reflective sheet, which is located between the light guide plate and the back plate body, and has a thickness of less than 0.25 mm.

7. The backlight module according to claim 6, characterized in that: The thickness of the light guide plate is 1.5 mm, the thickness of the reflective sheet is 0.21 mm, the thickness of the back plate body is 0.5 mm, and the thickness of the reinforcing rib is 1.7 mm.

8. The backlight module according to claim 7, characterized in that: The backlight module further comprises a light emitting component, the light emitting component is located in the accommodating cavity, the light emitting component is located between the light guide plate and the side plate body, and is arranged on a side of the side plate body close to the light guide plate; The light-emitting component includes a substrate and a plurality of light-emitting devices, wherein the plurality of light-emitting devices are arranged on the substrate at intervals, wherein the light-emitting device has a light-emitting surface, wherein the light-emitting surface faces the light guide plate, and a side of the light guide plate away from the back panel body protrudes from a side of the light-emitting device away from the back panel body.

9. The backlight module according to claim 8, characterized in that: The backlight module has an effective display area, and the ratio of the distance from the light-emitting surface to the edge of the effective display area to the distance between the centers of two adjacent light-emitting devices is between 0.88 and 1.

1.

10. A display module, characterized in that: The display module comprises the backlight module as claimed in any one of claims 1 to 9, and further comprises a display panel, a flexible circuit board, a driving circuit board and a protective cover; The display panel is arranged on a side of the support portion away from the back panel body, the driving circuit board is arranged on a side of the back panel away from the display panel, one end of the flexible circuit board is connected to the display panel, and the other end of the flexible circuit board is connected to the driving circuit board, one end of the protective cover is connected to the display panel, and the other end of the protective cover is connected to the back panel body, the protective cover covers the flexible circuit board and the driving circuit board, and the thickness of the protective cover is 0.03 to 0.29 mm.

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