Duplex screen backlight module

Abstract

The utility model relates to the technical field of display devices, and discloses a duplex screen backlight module which comprises a lower shell and an upper frame body, the lower shell is divided into a first shell and a second shell, and the upper frame body is divided into a first frame body and a second frame body; a first reflecting film, a first light guide plate and a first optical film group are stacked between the first shell and the first frame body from bottom to top, and a first lamp strip is arranged on the side wall of the first shell; a second reflecting film, a second light guide plate and a second optical film group are stacked between the second shell and the second frame body from bottom to top, and a second lamp strip is arranged on the side wall of the second shell; a first adhesive tape is attached to the side edge, close to the first lamp strip, of the first reflecting film, first receding notches are formed in the positions, corresponding to the lamp beads on the first lamp strip, of the first adhesive tape, a second adhesive tape is attached to the side edge, close to the second lamp strip, of the second reflecting film, and second receding notches are formed in the positions, corresponding to the lamp beads on the second lamp strip, of the second adhesive tape. Therefore, the optical effect in front of the lamp is improved, and the consistency of the overall optical effect is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of display devices, and in particular relates to a double-screen backlight module. Background Art

[0002] With the development of science and technology, dual-screen display devices are increasingly used in business offices, gaming and entertainment, financial transactions, education and training, etc. Dual-screen display devices provide users with a lot of conveniences, such as the need to compare data during office work or switch between multiple perspectives during gaming, without the need to frequently switch windows.

[0003] The dual-screen backlight module is an important light source device for dual-screen display devices. Existing dual-screen backlight modules usually use side-entry light source components to provide light sources, which can save costs on the one hand and reduce the volume and weight of the backlight module on the other hand. However, since the light source component is located on the side, it is easy to have uneven brightness in the display area, affecting the overall optical effect of the backlight module. Utility Model Content

[0004] In order to address the deficiencies of the prior art, the utility model provides a dual-screen backlight module, which effectively prevents uneven brightness in the display area of ​​the backlight module by respectively affixing a first adhesive strip and a second adhesive strip on a first reflective film and a second reflective film, thereby improving the optical effect in front of the lamp and ensuring the consistency of the overall optical effect of the backlight module.

[0005] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0006] The utility model provides a dual-screen backlight module, comprising a lower shell and an upper frame body covered on the lower shell, wherein the lower shell is divided into a first shell and a second shell, and the upper frame body is divided into a first frame body and a second frame body, wherein the first frame body corresponds to the position of the first shell, and the second frame body corresponds to the position of the second shell;

[0007] A first reflective film, a first light guide plate and a first optical film group are stacked in sequence from bottom to top in the first housing and the first frame, and a first light strip corresponding to a side edge of the first light guide plate is also provided on the side wall of the first housing;

[0008] A second reflective film, a second light guide plate and a second optical film group are stacked in sequence from bottom to top in the second housing and the second frame, and a second light strip corresponding to the side edge of the second light guide plate is also provided on the side wall of the second housing;

[0009] A first adhesive strip is attached to the side of the first reflective film close to the first light strip, and a first avoidance notch is opened on the first adhesive strip corresponding to the position of each lamp bead on the first light strip. A second adhesive strip is attached to the side of the second reflective film close to the second light strip, and a second avoidance notch is opened on the second adhesive strip corresponding to the position of each lamp bead on the second light strip.

[0010] As a further description of the technical solution of the present invention, a first reflective side film is attached to the side edges of the first light guide plate on the non-light incident side, and a second reflective side film is attached to the side edges of the second light guide plate on the non-light incident side.

[0011] As a further description of the technical solution of the utility model, at least two first limiting bosses are provided on the light incident side of the first light guide plate, wherein two first limiting bosses are respectively located at two ends of the light incident side of the first light guide plate, and the first limiting bosses abut against the first light strip;

[0012] At least two second limiting bosses are provided on the light incident side of the second light guide plate, wherein two second limiting bosses are respectively located at two ends of the light incident side of the second light guide plate, and the second limiting bosses abut against the second light strip.

[0013] As a further description of the technical solution of the utility model, a first silicone component is interference-connected between the two end corners on the non-light-incident side of the first light guide plate and the first frame body, and a second silicone component is interference-connected between the two end corners on the non-light-incident side of the second light guide plate and the second frame body.

[0014] As a further description of the technical solution of the utility model, the first silicone component is formed with a plurality of first protrusions toward the first light guide plate, and the second silicone component is formed with a plurality of second protrusions toward the second light guide plate.

[0015] As a further description of the technical solution of the utility model, a first hook is provided at at least one end corner of the first optical film group, and a first limiting column matching the first hook is provided at a corresponding position of the first light guide plate.

[0016] As a further description of the technical solution of the utility model, a first limiting lug is provided at at least one end corner of the first optical film group, and a first limiting groove matching the first limiting lug is provided at a corresponding position on the inner wall of the first shell.

[0017] As a further description of the technical solution of the utility model, a plurality of T-shaped buckles are formed at the edge of the upper frame, and T-shaped buckle limiting columns matching the T-shaped buckles are provided at corresponding positions on the side walls of the lower shell body.

[0018] As a further description of the technical solution of the utility model, a plurality of convex bumps are provided at the edge of the upper frame, and corresponding positions of the side walls of the lower shell are provided with slots matching the convex bumps.

[0019] As a further description of the technical solution of the utility model, a plurality of bending structures are formed at the edge of the upper frame, and each of the convex hulls is correspondingly located on one of the bending structures.

[0020] In summary, the utility model has at least the following benefits:

[0021] The dual-screen backlight module provided by the utility model can effectively prevent uneven brightness in the display area of ​​the backlight module by sticking a first adhesive strip on the side of the first reflective film close to the first light strip, and sticking a second adhesive strip on the side of the second reflective film close to the first light strip, thereby improving the optical effect in front of the first light strip and the second light strip, thereby ensuring the consistency of the overall optical effect of the backlight module. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is an exploded view of the dual-screen backlight module of Example 1 of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the first rubber strip and the second rubber strip in Example 1 of the utility model;

[0024] Figure 3 for Figure 2 A magnified view of part A;

[0025] Figure 4 This is a schematic structural diagram of the first reflective side film and the second reflective side film of Example 1 of the utility model;

[0026] Figure 5 This is a schematic structural diagram of the first limiting boss and the second limiting boss of Example 1 of the utility model;

[0027] Figure 6 for Figure 5 A magnified view of part B;

[0028] Figure 7 for Figure 5 Enlarged view of part C;

[0029] Figure 8 This is a schematic diagram of the structure of the first silicone component and the second silicone component of Example 1 of the utility model;

[0030] Fig. 9 This is a schematic structural diagram of the first convex portion and the second convex portion of Example 1 of the utility model;

[0031] Fig.10This is a schematic structural diagram of the first hook, the first limiting column, the second hook and the second limiting column of Example 2 of the utility model;

[0032] Fig.11 for Fig.10 A magnified view of part D in the middle;

[0033] Fig.12 for Fig.10 Enlarged view of part E in the middle;

[0034] Fig.13 This is a schematic structural diagram of the first limiting lug, the first limiting groove, the second limiting lug and the second limiting groove of Example 2 of the utility model;

[0035] Fig.14 for Fig.13 Enlarged view of part F;

[0036] Fig.15 for Fig.13 Enlarged view of section G;

[0037] Fig.16 This is a schematic structural diagram of a T-shaped buckle, a T-shaped buckle limiting column, a convex hull, a slot and a bending structure of Example 3 of the utility model;

[0038] Fig.17 for Fig.16 Enlarged view of section H;

[0039] Fig.18 for Fig.16 A magnified view of part I;

[0040] Fig.19 This is a schematic structural diagram of the second bending structure, boss and edge glue of Example 3 of the utility model;

[0041] Fig. 20 for Fig.19 Enlarged view of part J in the middle.

[0042] Markings in the figure:

[0043] 1. Lower housing; 11. First housing; 111. First limiting groove; 12. Second housing; 121. Second limiting groove; 13. T-shaped buckle limiting column; 14. Card slot; 15. Boss;

[0044] 2. upper frame; 21. first frame; 22. second frame; 23. T-shaped buckle; 24. convex hull; 25. bending structure; 26. second bending structure; 261. buckle; 27. edge glue;

[0045] 31. a first reflective film; 32. a second reflective film;

[0046] 41, first light guide plate; 411, first limiting boss; 412, first limiting column; 42, second light guide plate; 421, second limiting boss; 422, second limiting column;

[0047] 51, first optical film group; 511, first hook; 512, first limiting lug; 52, second optical film group; 521, second hook; 522, second limiting lug;

[0048] 61. First light strip; 62. Second light strip;

[0049] 71, first rubber strip; 711, first avoidance notch; 72, second rubber strip; 721, second avoidance notch;

[0050] 81. a first reflective side film; 82. a second reflective side film;

[0051] 91. First silicone component; 911. First convex portion; 92. Second silicone component; 921. Second convex portion. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0053] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0054] Example 1

[0055] refer to Figures 1 to 9 The dual-screen backlight module provided by the utility model comprises a lower housing 1 and an upper frame 2 covered on the lower housing 1. The lower housing 1 is divided into a first housing 11 and a second housing 12. The upper frame 2 is divided into a first frame 21 and a second frame 22. The first frame 21 corresponds to the position of the first housing 11, and the second frame 22 corresponds to the position of the second housing 12. As one embodiment, the first housing 11 and the second housing 12 have the same size, and accordingly, the first frame 21 and the second frame 22 also have the same size.

[0056] Furthermore, the first reflective film 31, the first light guide plate 41 and the first optical film group 51 are stacked in sequence from bottom to top in the first shell 11 and the first frame 21, and a first light strip 61 corresponding to the side of the first light guide plate 41 is also provided on the inner side wall of the first shell 11. The second reflective film 32, the second light guide plate 42 and the second optical film group 52 are stacked in sequence from bottom to top in the second shell 12 and the second frame 22, and a second light strip 62 corresponding to the side of the second light guide plate 42 is also provided on the inner side wall of the second shell 12. The first light strip 61 and the second light strip 62 are respectively attached to the first shell 11 and the second shell 12 by thermal conductive adhesive.

[0057] Furthermore, a first adhesive strip 71 is attached to the side of the first reflective film 31 close to the first light strip 61, and a first avoidance notch 711 is provided on the first adhesive strip 71 corresponding to the position of each lamp bead on the first light strip 61. A second adhesive strip 72 is attached to the side of the second reflective film 32 close to the second light strip 62, and a second avoidance notch 721 is provided on the second adhesive strip 72 corresponding to the position of each lamp bead on the second light strip 62. It can be understood that the side of the first reflective film 31 close to the first light strip 61 is in contact with the lower surface of each lamp bead on the first light strip 61, and the first avoidance notch 711 just corresponds to the position of the lamp bead, so that the main body edge of the first adhesive strip 71 is in close contact with the lamp bead. The first adhesive strip 71 covers the area in front of all the lamp beads of the first light strip 61, which can improve the phenomenon that the area in front of the lamp turns white or the display area is unevenly bright and dark due to excessive brightness or excessive concentration, effectively improve the optical effect in front of the lamp, and ensure the consistency of the overall optical effect of the backlight module. The structure and function of the second rubber strip 72 are the same as those of the first rubber strip 71 , and thus are not described in detail.

[0058] As a further optimization, a first reflective side film 81 is attached to the side edge of the non-light-incident side of the first light guide plate 41, and a second reflective side film 82 is attached to the side edge of the non-light-incident side of the second light guide plate 42. The first reflective side film 81 can avoid the loss of light source on the side wall of the first light guide plate 41, improve the overall brightness of the backlight module, and improve the optical effect around the display area of ​​the backlight module. The effect of the second reflective side film 82 is the same as that of the first reflective side film 81. In some embodiments, the lower edge of the first reflective side film 81 is connected to the side edge of the first reflective film 31 to form a whole, which can be easy to install on the one hand, and can fix the position between the first reflective film 31 and the first light guide plate 41 on the other hand, ensuring the optical effect of the backlight module. The second reflective side film 82 can also have the same setting.

[0059] As a further optimization, at least two first limiting bosses 411 are provided on the light incident side of the first light guide plate 41, wherein two first limiting bosses 411 are respectively located at two ends of the light incident side of the first light guide plate 41, and the first limiting bosses 411 abut against the first light strip 61. At least two second limiting bosses 421 are provided on the light incident side of the second light guide plate 42, wherein two second limiting bosses 421 are respectively located at two ends of the light incident side of the second light guide plate 42, and the second limiting bosses 421 abut against the second light strip 62.

[0060] As one embodiment, the number of the first limiting bosses 411 is three, two of which are respectively located at the two ends of the light incident side of the first light guide plate 41, and one is located in the middle of the light incident side of the first light guide plate 41. The second limiting boss 421 may also have the same setting. The first limiting boss 411 abuts against the first light strip 61. On the one hand, it can achieve the limiting and fixation of the first light guide plate 41; on the other hand, it can ensure the consistency of the spacing between the light incident side of the first light guide plate 41 and the first light strip 61, so that a safe distance is maintained between the two, and the heat generated by the first light strip 61 when the backlight module is working is prevented from affecting the light incident side of the first light guide plate 41, such as the phenomenon that the light incident side of the first light guide plate 41 melts, deforms or turns yellow, thereby ensuring the display optical taste effect of the backlight module. The effect of the second limiting boss 421 is the same as that of the first limiting boss 411.

[0061] Further, a first silicone component 91 is interference-connected between the two end corners of the non-light-incident side of the first light guide plate 41 and the first frame body 21, and a second silicone component 92 is interference-connected between the two end corners of the non-light-incident side of the second light guide plate 42 and the second frame body 22. It can be understood that one of the end corners of the non-light-incident side of the first light guide plate 41 is adjacent to one of the end corners of the non-light-incident side of the second light guide plate 42, so the first silicone component 91 and the second silicone component 92 at the corresponding position are also adjacent.

[0062] In some embodiments, the adjacent first silicone component 91 and the second silicone component 92 are in a straight line shape and are located on opposite sides of the light incident sides of the first light guide plate 41 and the second light guide plate 42, respectively, so as to achieve the limiting and fixation of the first light guide plate 41 and the second light guide plate 42 while ensuring the continuity of the dual-screen display area; and the other first silicone component 91 and the other second silicone component 92 are in an L shape, so as to achieve the limiting and fixation of the first light guide plate 41 and the second light guide plate 42 in the X and Y directions.

[0063] In some embodiments, a first receiving groove for receiving the first silicone component 91 is provided at a corresponding position on the inner wall of the first housing 11, and a second receiving groove for receiving the second silicone component 92 is provided at a corresponding position on the inner wall of the second housing 12. The first silicone component 91 and the second silicone component 92 are respectively attached and fixed in the first receiving groove and the second receiving groove by fixing adhesive.

[0064] As a further optimization, the first silicone component 91 is formed with a plurality of first convex portions 911 toward the first light guide plate 41, and the second silicone component 92 is formed with a plurality of second convex portions 921 toward the second light guide plate 42. By providing the first convex portions 911 and the second convex portions 921, the stress of the interference fit between the first silicone component 91 and the first light guide plate 41, and between the second silicone component 92 and the second light guide plate 42 can be increased, thereby achieving a better limiting and fixing effect, avoiding the first light guide plate 41 and the second light guide plate 42 from loosening or making abnormal noises, and also avoiding the undesirable phenomena such as the first light guide plate 41 and the second light guide plate 42 expanding, arching, shrinking, or loosening in the three comprehensive experiments.

[0065] Example 2

[0066] As a further optimization of Example 1, refer to Figures 10 to 15 A first hook 511 is provided at at least one end corner of the first optical film group 51, and a first limiting column 412 matching the first hook 511 is provided at a corresponding position of the first light guide plate 41. A first limiting lug 512 is provided at at least one end corner of the first optical film group 51, and a first limiting groove 111 matching the first limiting lug 512 is provided at a corresponding position of the inner wall of the first housing 11.

[0067] A second hook 521 is provided at at least one end corner of the second optical film group 52, and a second limiting column 422 matching the second hook 521 is provided at a corresponding position of the second light guide plate 42. A second limiting lug 522 is provided at at least one end corner of the second optical film group 52, and a second limiting groove 121 matching the second limiting lug 522 is provided at a corresponding position of the inner wall of the second housing 12.

[0068] As one embodiment, a first limiting column 412 is provided at one of the end corners of the light incident side of the first light guide plate 41, a first hook 511 is provided at the corresponding end corner of the first optical film group 51, and first limiting lugs 512 are provided at the remaining end corners of the first optical film group 51, and a first limiting groove 111 is provided at the corresponding position of the inner wall of the first shell 11. Thus, the first optical film group 51 can be connected and fixed to the first light guide plate 41 and the first shell 11, and the limiting and fixing effects are good. The second optical film group 52 can also have the same configuration.

[0069] In some embodiments, a fixing glue is attached between the first optical film group 51 and the first light guide plate 41, and between the second optical film group 52 and the second light guide plate 42, to achieve further position limiting and fixing. As one embodiment, the first optical film group 51 includes a first light-scattering film, a first light-enhancing film, a second light-enhancing film, and a second light-scattering film stacked in sequence from bottom to top, and a fixing glue is attached between each optical film piece to achieve position fixing and ensure optical effect, and the second optical film group 52 includes a third light-scattering film, a third light-enhancing film, and a brightness-enhancing film stacked in sequence from bottom to top, and a fixing glue is also attached between each optical film piece.

[0070] Example 3

[0071] As a further optimization of Example 1, refer to Figures 16 to 20 , a plurality of T-shaped buckles 23 are formed at the edge of the upper frame 2, and T-shaped buckle limiting posts 13 matching the T-shaped buckles 23 are provided at corresponding positions of the side walls of the lower shell 1. It can be understood that each T-shaped buckle 23 is correspondingly buckled between two T-shaped buckle limiting posts 13, thereby achieving connection and fixation between the upper frame 2 and the lower shell 1. In some embodiments, fixing glue may be provided between the T-shaped buckle 23 and the side wall of the lower shell 1 to achieve further limiting and fixing.

[0072] As a further optimization, a plurality of convex bumps 24 may be provided at the edge of the upper frame 2, and a slot 14 matching the convex bumps 24 is provided at a corresponding position of the side wall of the lower shell 1. The edge of the upper frame 2 is bent downward to form a plurality of bending structures 25, and each convex bump 24 is correspondingly located on a bending structure 25. As one embodiment, the convex bump 24 is located on the outside of the bending structure 25, and the slot 14 is opened on the inner side wall of the lower shell 1. By engaging the convex bump 24 in the slot 14, the built-in installation of the upper frame 2 is realized. This installation method can avoid the phenomenon of the upper frame 2 being pulled out, and ensure the stable connection between the upper frame 2 and the lower shell 1.

[0073] As a further optimization, a plurality of second bending structures 26 may be formed at the edge of the upper frame 2, and buckles 261 are provided on the second bending structures 26, and bosses 15 matching the buckles 261 are provided at corresponding positions on the outer side wall of the lower shell 1. The connection between the upper frame 2 and the lower shell 1 is achieved by buckling the buckles 261 on the bosses 15. In some embodiments, an edge glue 27 is attached to the outside of the second bending structure 26, and the edge glue 27 is attached to the second bending structure 26 along the upper surface of the upper frame 2 and covers the buckles 261. The attachment of the edge glue can prevent the buckles 261 from coming off the bosses 15, and further strengthen the connection between the upper frame 2 and the lower shell 1.

[0074] It should be noted that, in this embodiment, the three connection modes of the upper frame 2 and the lower shell 1 can be set alone or in any combination. Preferably, a second bending structure 26 is set on one side of the upper frame 2 corresponding to the position of the first light strip 61 and the second light strip 62, and the other three sides are staggered with T-shaped buckles 23 and bending structures 25.

[0075] The dual-screen backlight module of the utility model effectively prevents uneven brightness in the display area of ​​the backlight module and improves the optical effect in front of the lamp by respectively affixing the first adhesive strip and the second adhesive strip on the first reflective film and the second reflective film; further enhances the optical effect by affixing the first reflective side film and the second reflective side film; achieves the limiting and fixing of the first light guide plate and the second light guide plate by arranging the first limiting boss and the second limiting boss, and ensures the display optical taste effect of the backlight module at the same time; and further fixes the first light guide plate and the second light guide plate by arranging the first silicone component and the second silicone component to prevent loosening and abnormal noise.

[0076] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does 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 utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0078] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0079] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A dual-screen backlight module, characterized in that: The invention comprises a lower shell (1) and an upper frame (2) which is covered on the lower shell (1), wherein the lower shell (1) is divided into a first shell (11) and a second shell (12), and the upper frame (2) is divided into a first frame (21) and a second frame (22), wherein the first frame (21) corresponds to the position of the first shell (11), and the second frame (22) corresponds to the position of the second shell (12); A first reflective film (31), a first light guide plate (41) and a first optical film group (51) are stacked in sequence from bottom to top in the first shell (11) and the first frame (21); a first light strip (61) corresponding to the side edge of the first light guide plate (41) is also provided on the side wall of the first shell (11); A second reflective film (32), a second light guide plate (42) and a second optical film group (52) are stacked in sequence from bottom to top in the second shell (12) and a second light strip (62) corresponding to the side edge of the second light guide plate (42) is also provided on the side wall of the second shell (12); A first adhesive strip (71) is attached to the side of the first reflective film (31) close to the first light strip (61), and a first avoidance notch (711) is provided on the first adhesive strip (71) at a position corresponding to each lamp bead on the first light strip (61); a second adhesive strip (72) is attached to the side of the second reflective film (32) close to the second light strip (62), and a second avoidance notch (721) is provided on the second adhesive strip (72) at a position corresponding to each lamp bead on the second light strip (62).

2. The dual-screen backlight module according to claim 1, characterized in that: The side edges of the first light guide plate (41) on the non-light incident side are all affixed with a first reflective side film (81), and the side edges of the second light guide plate (42) on the non-light incident side are all affixed with a second reflective side film (82).

3. The dual-screen backlight module according to claim 1, characterized in that: At least two first limiting bosses (411) are provided on the light incident side of the first light guide plate (41), wherein two first limiting bosses (411) are respectively located at two ends of the light incident side of the first light guide plate (41), and the first limiting bosses (411) abut against the first light strip (61); At least two second position-limiting bosses (421) are provided on the light-entering side of the second light guide plate (42), wherein two of the second position-limiting bosses (421) are respectively located at two ends of the light-entering side of the second light guide plate (42), and the second position-limiting bosses (421) abut against the second light strip (62).

4. The dual-screen backlight module according to claim 3, characterized in that: A first silicone component (91) is interference-connected between the two end corners on the non-light-incident side of the first light guide plate (41) and the first frame body (21), and a second silicone component (92) is interference-connected between the two end corners on the non-light-incident side of the second light guide plate (42) and the second frame body (22).

5. The dual-screen backlight module according to claim 4, characterized in that: The first silicone component (91) is formed with a plurality of first protrusions (911) toward the first light guide plate (41), and the second silicone component (92) is formed with a plurality of second protrusions (921) toward the second light guide plate (42).

6. The dual-screen backlight module according to claim 1, characterized in that: A first hook (511) is provided at at least one end corner of the first optical film group (51), and a first limiting column (412) matching the first hook (511) is provided at a corresponding position of the first light guide plate (41).

7. The dual-screen backlight module according to claim 6, characterized in that: A first limiting lug (512) is provided at at least one end corner of the first optical film group (51), and a first limiting groove (111) matching the first limiting lug (512) is provided at a corresponding position on the inner wall of the first shell (11).

8. The dual-screen backlight module according to claim 1, characterized in that: A plurality of T-shaped buckles (23) are formed at the edge of the upper frame (2), and T-shaped buckle limiting columns (13) matching the T-shaped buckles (23) are provided at corresponding positions on the side walls of the lower shell (1).

9. The dual-screen backlight module according to claim 1, characterized in that: A plurality of convex bumps (24) are provided at the edge of the upper frame (2), and corresponding positions of the side wall of the lower shell (1) are provided with card slots (14) matching the convex bumps (24).

10. The dual-screen backlight module according to claim 9, characterized in that: A plurality of bending structures (25) are formed at the edge of the upper frame (2), and each of the convex bulges (24) is correspondingly located on one of the bending structures (25).

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