Backlight module and display device

Abstract

The utility model relates to a backlight module and a display device. The backlight module comprises a light-emitting assembly, the light-emitting assembly comprises a first light-emitting assembly and a second light-emitting assembly which are arranged in the first direction, the first light-emitting assembly comprises a first circuit board and a plurality of first light-emitting elements arranged on the side, close to the second light-emitting assembly, of the first circuit board, and the first light-emitting elements are arranged at intervals in the second direction; the second light-emitting assembly comprises a second circuit board and a plurality of second light-emitting elements arranged on the side, close to the first light-emitting assembly, of the second circuit board, and the second light-emitting elements are arranged at intervals in the second direction. At least one first light-emitting element is partially embedded between the two second light-emitting elements adjacent to the first light-emitting element; and / or at least one second light-emitting element is partially embedded between the two adjacent first light-emitting elements, so that the P value is reduced on the display effect, and the Hotspot problem is solved.

Description

Technical Field

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

[0002] With the continuous development of liquid crystal display technology, the application fields of liquid crystal display devices, especially color liquid crystal display devices, are also expanding. Driven by the market of liquid crystal displays, the backlight industry is booming. Liquid crystal display devices are non-luminous display devices and need the help of backlight modules to achieve the display function. The performance of the backlight module directly affects the image quality of the liquid crystal display device.

[0003] The light from the light-emitting elements of the backlight module is scattered in an inverted eight-shaped pattern, and the light from adjacent light-emitting elements will mix in front of the light-emitting elements, which is called mixed light. There is an insufficient light mixing area between the light-emitting elements, which is the dark area. Therefore, there is a phenomenon of alternating light and dark in front of the light-emitting elements, which is called the Hotspot phenomenon.

[0004] There is a formula in the industry that is used to measure the light mixing ability in front of the light-emitting element of the backlight module. This formula is called AP ratio, or A / P. The larger the A / P, the lighter the hotspot phenomenon and the better the display effect in front of the light-emitting element. The smaller the A / P, the heavier the hotspot phenomenon and the worse the display effect in front of the light-emitting element. The A value represents the distance from the light-emitting surface of the light-emitting element to the display area of ​​the liquid crystal panel, and the P value represents the center distance between adjacent light-emitting elements.

[0005] With the development of full-screen technology for liquid crystal display devices, the four-side frames of liquid crystal display devices are getting narrower and narrower, and the A value will be compressed. When the A value is reduced, the Hotspot phenomenon will be aggravated. According to the AP ratio, the center distance between adjacent light-emitting elements is reduced, and the area with insufficient light mixing is reduced. The phenomenon of alternating light and dark is also weakened. The better the light mixing effect in front of the light-emitting element lamp, the more uniform the brightness of the display screen, and the less likely the Hotspot phenomenon will occur when the frame is narrow. Therefore, reducing the LED spacing is one of the effective measures to solve the Hotspot phenomenon. Although the size of the light-emitting elements of the backlight module of the liquid crystal display device is getting smaller and smaller, and the arrangement is getting denser and denser, it is impossible to infinitely reduce the size of the light-emitting elements and the center distance between adjacent light-emitting elements due to the limitations of the equipment process capabilities. Utility Model Content

[0006] The purpose of the present application is to provide a backlight module and a display device, which can solve the technical problem that the prior art is limited by the equipment process capability and cannot further reduce the center distance between adjacent light-emitting elements to improve the Hotspot phenomenon.

[0007] In order to solve the above problems, the present application provides a backlight module, which includes: a light-emitting component, including a first light-emitting component and a second light-emitting component arranged along a first direction, the first light-emitting component including a first circuit board and a plurality of first light-emitting elements arranged on a side of the first circuit board close to the second light-emitting component, and the plurality of first light-emitting elements are arranged at intervals along a second direction; the second light-emitting component includes a second circuit board and a plurality of second light-emitting elements arranged on a side of the second circuit board close to the first light-emitting component, and the plurality of second light-emitting elements are arranged at intervals along the second direction, at least one first light-emitting element is partially embedded between two second light-emitting elements adjacent thereto; and / or at least one second light-emitting element is partially embedded between two first light-emitting elements adjacent thereto.

[0008] In some embodiments, the plurality of first light-emitting elements and the plurality of second light-emitting elements are alternately arranged in the second direction, and projections of the plurality of first light-emitting elements on the first circuit board at least partially overlap with projections of the plurality of second light-emitting elements on the first circuit board.

[0009] In some embodiments, the first light-emitting element includes a first sub-light-emitting portion and a second sub-light-emitting portion connected to each other, the first sub-light-emitting portion extends along the second direction, the second sub-light-emitting portion extends along the first direction and is located on a side of the first sub-light-emitting portion close to the second light-emitting element; the second light-emitting element includes a third sub-light-emitting portion and a fourth sub-light-emitting portion connected to each other, the third sub-light-emitting portion extends along the second direction, the fourth sub-light-emitting portion extends along the first direction and is located on a side of the third sub-light-emitting portion close to the first light-emitting element; at least one first sub-light-emitting portion is partially embedded between two adjacent fourth sub-light-emitting portions; and / or at least one third sub-light-emitting portion is partially embedded between two adjacent second sub-light-emitting portions.

[0010] In some embodiments, projections of at least two adjacent second sub-light-emitting portions and fourth sub-light-emitting portions on the first circuit board partially overlap.

[0011] In some embodiments, the central axis of the first sub-light-emitting portion in the first direction coincides with the central axis of the second sub-light-emitting portion in the first direction; the central axis of the third sub-light-emitting portion in the first direction coincides with the central axis of the fourth sub-light-emitting portion in the first direction.

[0012] In some embodiments, the first light-emitting element also includes a first frame, the first frame surrounds the first sub-light-emitting portion and the second sub-light-emitting portion, and a first fastener is provided on the first frame; the second light-emitting element also includes a second frame, the second frame surrounds the third sub-light-emitting portion and the fourth sub-light-emitting portion, and a second fastener is provided on the second frame; the first fastener is fastened with the second fastener to fix the first light-emitting element and the second light-emitting element.

[0013] In some embodiments, at least one of the first fastening component and the second fastening component is a hook, and the other of the first fastening component and the second fastening component is a hook and / or a buckle.

[0014] In some embodiments, the spacing between the central axes of any two adjacent first light-emitting elements in the first direction is a first spacing, the spacing between the central axes of any two adjacent second light-emitting elements in the first direction is a second spacing, and the first spacing is equal to the second spacing.

[0015] In some embodiments, the spacing between the central axes of any two adjacent first light-emitting elements and second light-emitting elements in the first direction is a third spacing, and the third spacing is half of the spacing between the central axes of any two adjacent second light-emitting elements in the first direction.

[0016] In order to solve the above problems, the present application also provides a display device, which includes the backlight module of the present application.

[0017] The advantages of the present application are: the light-emitting component of the backlight module of the present application includes a first light-emitting component and a second light-emitting component arranged along a first direction, the first light-emitting component includes a first circuit board and a plurality of first light-emitting elements arranged on a side of the first circuit board close to the second light-emitting component, and the plurality of first light-emitting elements are arranged at intervals along the second direction; the second light-emitting component includes a second circuit board and a plurality of second light-emitting elements arranged on a side of the second circuit board close to the first light-emitting component, and the plurality of second light-emitting elements are arranged at intervals along the second direction; at least one first light-emitting element is partially embedded between two second light-emitting elements adjacent thereto; and / or at least one second light-emitting element is partially embedded between two first light-emitting elements adjacent thereto, thereby achieving a reduction in the P value in the display effect, thereby improving the Hotspot problem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the light emitting effect of the light emitting element of the backlight module in the prior art;

[0020] Figure 2 It is a planar schematic diagram of a backlight module in the prior art;

[0021] Figure 3 It is a structural schematic diagram of the backlight module of the present application;

[0022] Figure 4 It is a schematic diagram of the structure of the light-emitting component of the present application;

[0023] Figure 5This is a schematic diagram of the structure of the first light-emitting component of the present application. Figure 1 ;

[0024] Figure 6 This is a schematic diagram of the structure of the first light-emitting component of the present application. Figure 2 ;

[0025] Figure 7 This is a schematic diagram of the structure of the second light-emitting component of the present application. Figure 1 ;

[0026] Figure 8 This is a schematic diagram of the structure of the second light-emitting component of the present application. Figure 2 .

[0027] Description of reference numerals:

[0028] 1. Light-emitting component; 2. Light guide plate; 3. First adhesive layer; 4. Second adhesive layer;

[0029] 11. first light-emitting assembly; 111. first light-emitting element; 112. first circuit board; 1111. first sub-light-emitting unit; 1112. second sub-light-emitting unit; 113. first frame; 1131. first buckle;

[0030] 12. Second light-emitting assembly; 121. Second light-emitting element; 122. Second circuit board; 1211. Third sub-light-emitting unit; 1212. Fourth sub-light-emitting unit; 123. Second frame; 1231. Second fastening member. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present application are described in detail below in conjunction with the drawings in the specification, so as to fully introduce the technical content of the present application to those skilled in the art, to illustrate that the present application can be implemented, to make the technical content disclosed in the present application clearer, and to make it easier for those skilled in the art to understand how to implement the present application. However, the present application can be embodied through many different forms of embodiments, and the protection scope of the present application is not limited to the embodiments mentioned in the text, and the description of the embodiments below is not intended to limit the scope of the present application.

[0032] The directional terms mentioned in this application, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", etc., are only directions in the drawings. The directional terms used in this article are used to explain and illustrate this application, and are not used to limit the scope of protection of this application.

[0033] In the drawings, components with the same structure are represented by the same numerical labels, and components with similar structures or functions are represented by similar numerical labels. In addition, for the convenience of understanding and description, the size and thickness of each component shown in the drawings are arbitrarily shown, and the present application does not limit the size and thickness of each component.

[0034] See also Figure 1 , Figure 1 This is a schematic diagram of the light emitting effect of the light emitting element of the backlight module in the prior art. The light of the light emitting element 100 of the backlight module is scattered in an inverted eight-shaped pattern, and the light of adjacent light emitting elements 100 will mix in front of the light emitting element, that is, light mixing. There is an insufficient light mixing area between the light emitting elements 100, which is the dark area, so there is a phenomenon of alternating light and dark in front of the light emitting element 100, which is the Hotspot phenomenon.

[0035] See also Figure 2 , Figure 2 It is a planar schematic diagram of a backlight module in the prior art. There is a formula in the industry to measure the light mixing ability in front of the light-emitting element 100 of the backlight module. This formula is called AP ratio, i.e. A / P. The larger the A / P, the lighter the Hotspot phenomenon, and the better the display effect in front of the light-emitting element 100. The smaller the A / P, the heavier the Hotspot phenomenon, and the worse the display effect in front of the light-emitting element 100. The A value represents the distance from the light-emitting surface of the light-emitting element 100 to the display area of ​​the liquid crystal panel, and the P value represents the center distance between adjacent light-emitting elements 100.

[0036] With the development of full-screen technology for liquid crystal display devices, the four-side frames of liquid crystal display devices are getting narrower and narrower, and the A value will be compressed. When the A value is reduced, the Hotspot phenomenon will be aggravated. According to the AP ratio, the center distance between adjacent light-emitting elements is reduced, and the area with insufficient light mixing is reduced. The phenomenon of alternating light and dark is also weakened. The better the light mixing effect in front of the light-emitting element lamp, the more uniform the brightness of the display screen, and the less likely the Hotspot phenomenon will occur when the frame is narrow. Therefore, reducing the LED spacing is one of the effective measures to solve the Hotspot phenomenon. Although the size of the light-emitting elements of the backlight module of the liquid crystal display device is getting smaller and smaller, and the arrangement is getting denser and denser, it is impossible to infinitely reduce the size of the light-emitting elements and the center distance between adjacent light-emitting elements due to the limitations of the equipment process capabilities.

[0037] See also Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the structure of the backlight module of this application, Figure 4 Schematic diagram of the structure of the light emitting component of the present application. The present application provides a backlight module, the backlight module includes a first direction M, a second direction N and a third direction Q that intersect each other. In some embodiments, the first direction M, the second direction N and the third direction Q are perpendicular to each other.

[0038] See also Figure 3 and Figure 4 , the backlight module includes: a light emitting component 1 and a light guide plate 2. In some embodiments, the light emitting component 1 and the light guide plate 2 are arranged along a third direction Q. It is worth noting that Figure 3It is only illustrated that the light-emitting component 1 is located on one side of the light guide plate 2 in the third direction Q. In fact, in other embodiments, the light-emitting component 1 may also be located on both sides of the light guide plate 2 in the third direction Q, or on one side or both sides of the light guide plate 2 in the second direction.

[0039] See also Figure 3 and Figure 4 The light emitting component 1 includes a first light emitting component 11 and a second light emitting component 12 arranged along a first direction M.

[0040] See also Figure 3 and Figure 4 The first light-emitting assembly 11 includes a first circuit board 112 and a plurality of first light-emitting elements 111 disposed on a side of the first circuit board 112 close to the second light-emitting assembly 12, and the plurality of first light-emitting elements 111 are arranged at intervals along the second direction N. Specifically, the plurality of first light-emitting elements 111 are arranged at intervals along the second direction N on a side of the first circuit board 112 close to the second light-emitting element 121. In some embodiments, the spacing between the central axes of any two adjacent first light-emitting elements 111 in the first direction M is a first spacing L1.

[0041] See also Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the structure of the first light-emitting component of the present application. Figure 1 ; Figure 6 This is a schematic diagram of the structure of the first light-emitting component of the present application. Figure 2 The first light-emitting element 111 includes a first sub-light-emitting portion 1111 and a second sub-light-emitting portion 1112 that are connected to each other. The first sub-light-emitting portion 1111 extends along the second direction N, and the second sub-light-emitting portion 1112 extends along the first direction M and is located on a side of the first sub-light-emitting portion 1111 close to the second light-emitting element 121. The central axis of the first sub-light-emitting portion 1111 in the first direction M coincides with the central axis of the second sub-light-emitting portion 1112 in the first direction M, thereby improving the light uniformity of the first light-emitting element 111 and improving the display effect of the first light-emitting element 111. In some embodiments, the first light-emitting element 111 is T-shaped.

[0042] See also Figure 3 and Figure 4 The second light-emitting assembly 12 includes a second circuit board 122 and a plurality of second light-emitting elements 121 disposed on a side of the second circuit board 122 close to the first light-emitting assembly 11, and the plurality of second light-emitting elements 121 are arranged at intervals along the second direction N. Specifically, the plurality of second light-emitting elements 121 are arranged at intervals along the second direction N on a side of the second circuit board 122 close to the first light-emitting element 111. In some embodiments, the spacing between the central axes of any two adjacent second light-emitting elements 121 in the first direction M is a second spacing L2, and the first spacing L1 is equal to the second spacing L2.

[0043] See also Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the second light-emitting component of the present application. Figure 1 ; Figure 8 This is a schematic diagram of the structure of the second light-emitting component of the present application. Figure 2 The second light-emitting element 121 includes a third sub-light-emitting portion 1211 and a fourth sub-light-emitting portion 1212 connected to each other. The third sub-light-emitting portion 1211 extends along the second direction N, and the fourth sub-light-emitting portion 1212 extends along the first direction M and is located on a side of the third sub-light-emitting portion 1211 close to the first light-emitting element 111. The central axis of the third sub-light-emitting portion 1211 in the first direction M coincides with the central axis of the fourth sub-light-emitting portion 1212 in the first direction M, thereby improving the light uniformity of the second light-emitting element 121 and improving the display effect of the second light-emitting element 121. In some embodiments, the second light-emitting element 121 is T-shaped.

[0044] See also Figure 3 and Figure 4 , at least one first light-emitting element 111 is partially embedded between two adjacent second light-emitting elements 121; and / or at least one second light-emitting element 121 is partially embedded between two adjacent first light-emitting elements 111. Specifically, at least one first sub-light-emitting portion 1111 is partially embedded between two adjacent fourth sub-light-emitting portions 1212; and / or at least one third sub-light-emitting portion 1211 is partially embedded between two adjacent second sub-light-emitting portions 1112. In this embodiment, the first light-emitting elements 111 and the second light-emitting elements 121 are alternately arranged in the second direction N, each first light-emitting element 111 is partially embedded between two adjacent second light-emitting elements 121, and each second light-emitting element 121 is partially embedded between two adjacent first light-emitting elements 111. Specifically, each first sub-light-emitting portion 1111 is partially embedded between two adjacent fourth sub-light-emitting portions 1212, and each third sub-light-emitting portion 1211 is partially embedded between two adjacent second sub-light-emitting portions 1112. Thereby, the size of the light emitting component in the first direction M can be reduced, which is beneficial to reducing the size of the backlight module and the display device in the first direction M.

[0045] See also Figure 4, the spacing between the central axes of any two adjacent first light-emitting elements 111 and second light-emitting elements 121 in the first direction M is the third spacing L3, and the third spacing L3 is half of the spacing L2 between the central axes of any two adjacent second light-emitting elements 121 in the first direction M. In other words, the spacing between the central axis of any first light-emitting element 111 and the central axes of the two adjacent second light-emitting elements 121 is equal, and the spacing between the central axis of any second light-emitting element 121 and the central axes of the two adjacent first light-emitting elements 111 is equal, thereby improving the light mixing effect of the light-emitting component 1, and making the display brightness of the light-emitting component 1 more uniform.

[0046] Through the above scheme, the spacing between the central axes of any two adjacent first light-emitting elements 111 and the second light-emitting elements 121 in the first direction M of the present application is a third spacing L3. Compared with the spacing between the central axes of any two adjacent first light-emitting elements 111 in the first direction M being the first spacing L1 and the spacing between the central axes of any two adjacent second light-emitting elements 121 in the first direction M being the second spacing L2, L3 is smaller than L1, and L3 is smaller than L2, thereby achieving a reduction in the P value in the display effect, thereby improving the Hotspot problem.

[0047] See also Figure 4 , the projections of the plurality of first light-emitting elements 111 on the first circuit board 112 at least partially overlap with the projections of the plurality of second light-emitting elements 121 on the first circuit board 112. In some embodiments, the projections of at least two adjacent second sub-light-emitting portions 1112 and fourth sub-light-emitting portions 1212 on the first circuit board 112 partially overlap. In this embodiment, the projections of any two adjacent second sub-light-emitting portions 1112 and fourth sub-light-emitting portions 1212 on the first circuit board 112 partially overlap, thereby reducing the dark area between any two adjacent second sub-light-emitting portions 1112 and fourth sub-light-emitting portions 1212, reducing the phenomenon of alternating light and dark, improving the light mixing effect of the light-emitting component 1, and making the brightness of the display screen of the light-emitting component 1 more uniform.

[0048] See also Figure 4 and Figure 6 In some embodiments, the first light emitting element 111 further includes a first frame 113. The first frame 113 surrounds the first sub-light emitting portion 1111 and the second sub-light emitting portion 1112, and a first buckling member 1131 is disposed on the first frame 113.

[0049] See also Figure 4 and Figure 8 The second light emitting element 121 further includes a second frame 123. The second frame 123 surrounds the third sub-light emitting portion 1211 and the fourth sub-light emitting portion 1212, and a second fastening member 1231 is disposed on the second frame 123.

[0050] See also Figure 4 , Figure 6 and Figure 8 , the first fastening member 1131 and the second fastening member 1231 are fastened to fix the first light-emitting element 111 and the second light-emitting element 121, thereby improving the stability between the first light-emitting component 11 and the second light-emitting component 12. In some embodiments, at least one of the first fastening member 1131 and the second fastening member 1231 is a hook, and the other of the first fastening member 1131 and the second fastening member 1231 is a hook and / or a buckle. In this embodiment, both the first fastening member 1131 and the second fastening member 1231 are hooks. In other embodiments, other methods can also be used to achieve the connection between the first light-emitting component 11 and the second light-emitting component 12 according to actual conditions and needs.

[0051] The light guide plate 2 is disposed between the first circuit board 112 and the second circuit board 122. Specifically, the first circuit board 112 is connected to one side of the light guide plate 2 in the first direction M through the first adhesive layer 3, and the second circuit board 122 is connected to one side of the light guide plate 2 in the first direction M through the second adhesive layer 4. In some embodiments, the first adhesive layer 3 and the second adhesive layer 4 are double-sided adhesives.

[0052] The present application also provides a display device, which includes the backlight module of the present application. In some embodiments, the display device is a liquid crystal display device, and the display device also includes a liquid crystal display screen (not shown) arranged on one side of the backlight module.

[0053] The above is a detailed introduction to a backlight module and a display device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application. At the same time, for technicians in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A backlight module, characterized in that: include: A light-emitting assembly (1) comprising a first light-emitting assembly (11) and a second light-emitting assembly (12) arranged along a first direction (M); The first light-emitting component (11) comprises a first circuit board (112) and a plurality of first light-emitting elements (111) arranged on a side of the first circuit board (112) close to the second light-emitting component (12), wherein the plurality of first light-emitting elements (111) are arranged at intervals along a second direction (N); The second light-emitting component (12) comprises a second circuit board (122) and a plurality of second light-emitting elements (121) arranged on a side of the second circuit board (122) close to the first light-emitting component (11), wherein the plurality of second light-emitting elements (121) are arranged at intervals along the second direction (N); At least one of the first light-emitting elements (111) is partially embedded between two adjacent second light-emitting elements (121); and / or At least one of the second light-emitting elements (121) is partially embedded between two adjacent first light-emitting elements (111).

2. The backlight module according to claim 1, characterized in that: A plurality of the first light-emitting elements (111) and a plurality of the second light-emitting elements (121) are alternately arranged in the second direction (N), and projections of the plurality of the first light-emitting elements (111) on the first circuit board (112) at least partially overlap with projections of the plurality of the second light-emitting elements (121) on the first circuit board (112).

3. The backlight module according to claim 2, characterized in that: The first light-emitting element (111) comprises a first sub-light-emitting portion (1111) and a second sub-light-emitting portion (1112) which are connected to each other, the first sub-light-emitting portion (1111) extending along the second direction (N), and the second sub-light-emitting portion (1112) extending along the first direction (M) and being located on a side of the first sub-light-emitting portion (1111) close to the second light-emitting element (121); The second light-emitting element (121) comprises a third sub-light-emitting portion (1211) and a fourth sub-light-emitting portion (1212) which are connected to each other, the third sub-light-emitting portion (1211) extending along the second direction (N), and the fourth sub-light-emitting portion (1212) extending along the first direction (M) and located on a side of the third sub-light-emitting portion (1211) close to the first light-emitting element (111); At least one of the first sub-light-emitting portions (1111) is partially embedded between two of the fourth sub-light-emitting portions (1212) adjacent thereto; and / or At least one of the third sub-light-emitting portions (1211) is partially embedded between two of the second sub-light-emitting portions (1112) adjacent thereto.

4. The backlight module according to claim 3, characterized in that: The projections of at least two adjacent second sub-light-emitting portions (1112) and fourth sub-light-emitting portions (1212) on the first circuit board (112) partially overlap.

5. The backlight module according to claim 3, characterized in that: The central axis of the first sub-light-emitting portion (1111) in the first direction (M) coincides with the central axis of the second sub-light-emitting portion (1112) in the first direction (M); The central axis of the third sub-light-emitting portion (1211) in the first direction (M) coincides with the central axis of the fourth sub-light-emitting portion (1212) in the first direction (M).

6. The backlight module according to claim 3, characterized in that: The first light-emitting element (111) further comprises a first frame (113), the first frame (113) surrounding the first sub-light-emitting portion (1111) and the second sub-light-emitting portion (1112), and a first buckling member (1131) is provided on the first frame (113); The second light-emitting element (121) further comprises a second frame (123), the second frame (123) surrounding the third sub-light-emitting portion (1211) and the fourth sub-light-emitting portion (1212), and a second buckling member (1231) is provided on the second frame (123); The first fastening member (1131) is fastened with the second fastening member (1231) to fix the first light-emitting element (111) and the second light-emitting element (121).

7. The backlight module according to claim 6, characterized in that: At least one of the first fastening member (1131) and the second fastening member (1231) is a hook, and the other of the first fastening member (1131) and the second fastening member (1231) is a hook and / or a buckle.

8. The backlight module according to claim 1, characterized in that: The spacing between the central axes of any two adjacent first light-emitting elements (111) in the first direction (M) is a first spacing (L1), and the spacing between the central axes of any two adjacent second light-emitting elements (121) in the first direction (M) is a second spacing (L2), and the first spacing (L1) is equal to the second spacing (L2).

9. The backlight module according to claim 1, characterized in that: The spacing between the central axes of any two adjacent first light-emitting elements (111) and second light-emitting elements (121) in the first direction (M) is a third spacing (L3), and the third spacing (L3) is half of the spacing between the central axes of any two adjacent second light-emitting elements (121) in the first direction (M).

10. A display device, characterized in that: A backlight module comprising any one of claims 1-9.

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