Backlight module and display equipment

Abstract

The utility model belongs to the technical field of display, and particularly provides a backlight module and display equipment, the display equipment comprises the backlight module, the backlight module comprises a light guide plate, a back plate and a limiting piece, limiting protrusions are arranged on the peripheral side face of the light guide plate, the back plate comprises a bottom plate and a side surrounding plate arranged around the bottom plate, and the bottom plate and the side surrounding plate are both connected with the limiting piece in an inserted mode. The first direction is perpendicular to the thickness direction of the light guide plate, the limiting piece is provided with a limiting space, and the limiting protrusion is inserted into the limiting space and can limit the light guide plate to move in the first direction relative to the limiting piece. According to the backlight module, the bottom plate and the side coaming of the back plate are inserted into the limiting piece, the limiting piece can be reliably limited to move relative to the back plate in the first direction, the limiting protrusion of the light guide plate is inserted into the limiting space, the light guide plate can be effectively prevented from moving in the first direction perpendicular to the thickness direction, and therefore the backlight brightness uniformity is improved.

Description

Technical Field

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

[0002] The backlight module generally includes components such as a back panel, a middle frame and a light guide plate, and the light guide plate is generally pressed against the back panel by the middle frame to fix the light guide plate. The fixing effect is poor, and the light guide plate is prone to move in a direction perpendicular to the thickness direction, thereby affecting the uniformity of the backlight brightness. Utility Model Content

[0003] The purpose of the present application is to provide a backlight module and a display device, aiming to solve the technical problem in the prior art that the light guide plate is prone to move in a direction perpendicular to the thickness direction.

[0004] On the one hand, to achieve the above-mentioned purpose, the technical solution adopted in the present application is: a backlight module, including a light guide plate, a back plate and a limit piece, a limit protrusion is arranged on the peripheral side surface of the light guide plate, the back plate includes a bottom plate and a side panel arranged around the bottom plate, the bottom plate and the side panel are both plugged into the limit piece, and both can limit the movement of the limit piece relative to the back plate along a first direction, the first direction is perpendicular to the thickness direction of the light guide plate, the limit piece is provided with a limit space, the limit protrusion is inserted into the limit space, and can limit the movement of the light guide plate relative to the limit piece along the first direction.

[0005] Compared with the prior art, the beneficial effect of the backlight module provided by the present application is that: by making the bottom plate and the side panel of the back plate both inserted into the limit member, the limit member can be reliably limited to move relative to the back plate along the first direction; by providing a limit protrusion on the light guide plate, providing a limit space on the limit member, and inserting the limit protrusion into the limit space, the light guide plate can be limited to move relative to the limit member along the first direction; since the limit member and the back plate are relatively stationary in the first direction, the light guide plate can be limited to move relative to the back plate along the first direction, effectively preventing the light guide plate from moving in the first direction perpendicular to the thickness direction, thereby improving the uniformity of the backlight brightness.

[0006] Furthermore, the limiting member includes a connecting portion and two stop portions, the connecting portion is plugged into the bottom plate, the two stop portions are spaced apart along the first direction, the two stop portions are respectively connected to opposite ends of the connecting portion, and are both plugged into the side panel, forming a limiting space between the two stop portions.

[0007] Furthermore, the base plate is provided with a first fixing hole, the connecting part is provided with a first fixing protrusion, and the first fixing protrusion is inserted into the first fixing hole; the two stop parts are provided with a second fixing protrusion, the side panel is provided with two second fixing holes, and the two second fixing protrusions are respectively inserted into the two second fixing holes.

[0008] Furthermore, the first fixing protrusion abuts against the hole wall of the first fixing hole on two opposite sides in the first direction, and abuts against the hole wall of the first fixing hole on two opposite sides in the second direction, and the second direction is perpendicular to the thickness direction of the light guide plate and the first direction.

[0009] Furthermore, a side of the second fixing protrusion facing away from the bottom plate has a parallel surface, the parallel surface is arranged parallel to the bottom plate, and abuts against the second fixing hole.

[0010] Furthermore, a side of the second fixing protrusion facing the bottom plate has an inclined surface, the inclined surface is arranged obliquely to the bottom plate, and the distance between the inclined surface and the bottom plate gradually increases in a direction away from the stop portion.

[0011] Furthermore, the two stop parts are both connected to a side of the connecting part facing away from the bottom plate, and the limiting protrusion can be inserted into the limiting space between ends of the two stop parts away from the connecting part.

[0012] Furthermore, the limiting member also includes a reinforcing portion, the reinforcing portion and the two stop portions are arranged on the same side of the connecting portion, and opposite ends of the reinforcing portion are respectively connected to the two stop portions.

[0013] Furthermore, there are two limiting members, and limiting protrusions are provided on two opposite side surfaces of the light guide plate, and the two limiting protrusions are respectively inserted into the limiting spaces of the two limiting members.

[0014] On the other hand, to achieve the above-mentioned purpose, the technical solution adopted in the present application is: a display device, including the above-mentioned backlight module.

[0015] Compared with the prior art, the display device provided by the present application has the following beneficial effects: by adopting the above-mentioned backlight module, by making the bottom plate and the side panel of the back plate both plugged into the limit member, the limit member can be reliably limited to move relative to the back plate along the first direction; by providing a limit protrusion on the light guide plate, providing a limit space on the limit member, and inserting the limit protrusion into the limit space, the light guide plate can be limited to move relative to the limit member along the first direction; since the limit member and the back plate are relatively stationary in the first direction, the light guide plate can be limited to move relative to the back plate along the first direction, thereby effectively preventing the light guide plate from moving in the first direction perpendicular to the thickness direction, thereby improving the uniformity of the backlight brightness. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1A schematic diagram of a partial structure of a backlight module provided in an embodiment of the present application;

[0018] Figure 2 for Figure 1 A schematic diagram of the assembly structure of the light guide plate and the limiting member in the backlight module shown;

[0019] Figure 3 for Figure 1 The schematic diagram of the exploded structure of the back plate and the limiting member in the backlight module shown;

[0020] Figure 4 for Figure 1 A schematic structural diagram of a position-limiting member in a backlight module shown;

[0021] Figure 5 A schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0022] Among them, the reference numerals in the figure are:

[0023] 100. Backlight module; 10. Light guide plate; 11. Limiting protrusion; 20. Back plate; 21. Bottom plate; 211. First fixing hole; 22. Side panel; 221. Second fixing hole; 30. Limiting member; 31. Limiting space; 32. Connecting portion; 321. Hand-grip groove; 33. Stopping portion; 331. Flat plate portion; 332. Boss portion; 34. First fixing protrusion; 35. Second fixing protrusion; 351. Parallel surface; 352. Inclined surface; 36. Reinforcement portion; 200. Touch screen. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0025] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship 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 should not be understood as a limitation on the present application.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 this application can be understood according to specific circumstances.

[0028] Combination Figure 1 and Figure 2 As shown, the embodiment of the present application provides a backlight module 100, including a light guide plate 10, a back plate 20 and a limit member 30. A limit protrusion 11 is arranged on the peripheral side surface of the light guide plate 10. The back plate 20 includes a bottom plate 21 and a side panel 22 arranged around the bottom plate 21. The bottom plate 21 and the side panel 22 are both plugged into the limit member 30, and both can limit the movement of the limit member 30 relative to the back plate 20 along a first direction. The first direction is perpendicular to the thickness direction of the light guide plate 10. The limit member 30 is provided with a limit space 31. The limit protrusion 11 is inserted into the limit space 31, and can limit the movement of the light guide plate 10 relative to the limit member 30 along the first direction.

[0029] By inserting the bottom plate 21 and the side panel 22 of the back plate 20 into the limiting member 30, the limiting member 30 can be reliably limited from moving in the first direction relative to the back plate 20. By providing a limiting protrusion 11 on the light guide plate 10, providing a limiting space 31 on the limiting member 30, and inserting the limiting protrusion 11 into the limiting space 31, the light guide plate 10 can be limited from moving in the first direction relative to the limiting member 30. Since the limiting member 30 and the back plate 20 are relatively stationary in the first direction, the light guide plate 10 can be limited from moving in the first direction relative to the back plate 20, thereby effectively preventing the light guide plate 10 from moving in the first direction perpendicular to the thickness direction, thereby improving the uniformity of the backlight brightness.

[0030] In one embodiment, Figure 3As shown, the limiting member 30 includes a connecting portion 32 and two stoppers 33. The connecting portion 32 is plugged into the bottom plate 21. The two stoppers 33 are spaced apart along the first direction. The two stoppers 33 are respectively connected to the opposite ends of the connecting portion 32 and are both plugged into the side panels 22. A limiting space 31 is formed between the two stoppers 33. For the convenience of explanation, assuming that the first direction is the up-down direction, the two stoppers 33 are respectively connected to the upper and lower ends of the connecting portion 32 and are respectively located at the upper and lower sides of the limiting protrusion 11. The stopper 33 located below the limiting protrusion 11 can limit the light guide plate 10 from moving downward by abutting against the bottom of the limiting protrusion 11, while the stopper 33 located above the protrusion can limit the light guide plate 10 from moving upward by abutting against the top of the limiting protrusion 11. The two cooperate with each other, thereby limiting the light guide plate 10 from moving in the up-down direction relative to the limiting member 30, that is, effectively preventing the light guide plate 10 from moving in the up-down direction.

[0031] The shape of the light guide plate 10 is generally rectangular. The first direction in this embodiment refers to the length direction or width direction of the light guide plate 10, rather than a fixed direction in space, such as the up-down direction, the left-right direction, or the front-back direction. Specifically, the backlight module 100 of this embodiment can be applied to a display screen, and some display screens can be used at an adjustable angle, such as being used in a horizontal or vertical orientation. In this case, it can be understood that the direction indicated by the first direction in space will change as the angle of the display screen changes.

[0032] In one embodiment, Figure 3 As shown, the base plate 21 is provided with a first fixing hole 211, and the connecting portion 32 is provided with a first fixing protrusion 34, which is inserted into the first fixing hole 211; the two stop portions 33 are both provided with a second fixing protrusion 35, and the side panel 22 is provided with two second fixing holes 221, and the two second protrusions are respectively inserted into the two second fixing holes 221. By providing a first fixing hole 211 on the bottom plate 21, providing a first fixing protrusion 34 on the connecting portion 32, and inserting the first fixing protrusion 34 into the first fixing hole 211, the limiting member 30 can be limited to move relative to the bottom plate 21 along the first direction. By providing a second fixing hole 221 on the side panel 22, providing a second fixing protrusion 35 on the stop portion 33, and inserting the second fixing protrusion 35 into the second fixing hole 221, the limiting member 30 can be limited to move relative to the side panel 22 along the first direction. The two cooperate with each other to reliably limit the limiting member 30 from moving relative to the back panel 20 along the first direction, thereby ensuring the limiting effect of the limiting member 30 on the light guide plate 10.

[0033] Of course, in some other embodiments, the first fixing protrusion 34 can be reversely arranged on the bottom plate 21, and the first fixing hole 211 can be reversely arranged on the connecting portion 32. Similarly, the second fixing protrusion 35 can be reversely arranged on the side panel 22, and the second fixing hole 221 can be reversely arranged on the stopper 33. When improving the existing backlight module 100, on the one hand, it is necessary to independently process the stopper 30, and on the other hand, it is necessary to process the limit protrusion 11 on the existing light guide plate 10, and to open the first fixing hole 211 and the second fixing hole 221 on the existing back plate 20. Compared with processing the first fixing protrusion 34 and the second fixing protrusion 35 on the existing back plate 20, processing the first fixing hole 211 and the second fixing hole 221 on the existing back plate 20 is simpler in production and manufacturing.

[0034] In some other embodiments, the number of the first fixing protrusions 34 may also be multiple, the number of the first fixing holes 211 is equal to the number of the first fixing protrusions 34, and the multiple first fixing protrusions 34 are plugged into the multiple first fixing holes 211 in a one-to-one correspondence, which can enhance the limiting effect of the limiting member 30.

[0035] In one embodiment, Figure 3 As shown, the first fixing protrusion 34 and the second fixing protrusion 35 are both extended in the first direction in a long strip shape, so as to have sufficient strength to resist the movement of the limiting member 30 relative to the back plate 20 in the first direction, thereby improving working reliability.

[0036] In one embodiment, the first fixing protrusion 34 abuts against the hole wall of the first fixing hole 211 on both opposite sides in the first direction, and abuts against the hole wall of the first fixing hole 211 on both opposite sides in the second direction, and the second direction is perpendicular to the thickness direction of the light guide plate 10 and the first direction. By making the first fixing protrusion 34 abut against the hole wall of the first fixing hole 211 on both opposite sides in the first direction, the position limiting member 30 is limited in the first direction, and by making the first fixing protrusion 34 abut against the hole wall of the first fixing hole 211 on both opposite sides in the second direction, the position limiting member 30 is limited in the second direction, so that the position limiting member 30 can be prevented from moving relative to the back plate 20 along the second direction and disengaging from the side panel 22, ensuring that the position limiting member 30 is stably plugged with the side panel 22, and at the same time, the position limiting protrusion 11 can be prevented from escaping from the position limiting space 31 due to the position limiting member 30 moving relative to the light guide plate 10 along the second direction, ensuring that the position limiting protrusion 11 is stably matched with the position limiting space 31. Specifically, the first fixing protrusion 34 is in the shape of a cuboid, with the length direction being the first direction. The shape and size of the first fixing hole 211 are adapted to the first fixing protrusion 34. By plugging the first fixing protrusion 34 into the first fixing hole 211, not only can the movement of the limit member 30 relative to the back plate 20 along the first direction and the second direction be limited, but also the rotation of the limit member 30 relative to the back plate 20 can be limited.

[0037] In one embodiment, in combination Figure 3 and Figure 4 As shown, the second fixing protrusion 35 has a parallel surface 351 on the side facing away from the bottom plate 21, and the parallel surface 351 is arranged parallel to the bottom plate 21 and abuts against the second fixing hole 221. The parallel surface 351 is arranged parallel to the bottom plate 21, and can be stably buckled on the hole wall of the second fixing hole 221, thereby effectively preventing the limiting member 30 from moving in a direction away from the bottom plate 21 relative to the back plate 20, and preventing the limiting member 30 from moving in a direction away from the bottom plate 21 relative to the back plate 20 and separating from the bottom plate 21, thereby ensuring the stable insertion of the limiting member 30 and the bottom plate 21, and further ensuring the stable matching of the limiting protrusion 11 and the limiting space 31.

[0038] In one embodiment, in combination Figure 3 and Figure 4 As shown, the second fixing protrusion 35 has an inclined surface 352 on the side facing the bottom plate 21, and the inclined surface 352 is arranged obliquely to the bottom plate 21, and the distance between the inclined surface 352 and the bottom plate 21 gradually increases in the direction away from the stopper 33. The inclined surface 352 is arranged obliquely to the bottom plate 21, and the distance between the inclined surface 352 and the bottom plate 21 gradually increases in the direction away from the stopper 33, so that the second fixing protrusion 35 shrinks in the direction away from the stopper 33 to form a wedge shape, and such an arrangement can facilitate the installation and removal of the limiter 30.

[0039] In one embodiment, Figure 3 As shown, the two stoppers 33 are both arranged on the side of the connecting portion 32 facing away from the bottom plate 21, and the limiting protrusion 11 can be inserted into the limiting space 31 from between the ends of the two stoppers 33 away from the connecting portion 32. By arranging the two stoppers 33 on the side of the connecting portion 32 facing away from the bottom plate 21, when the light guide plate 10 is installed in the back plate 20, that is, in the space enclosed by the bottom plate 21 and the side panels 22, the limiting protrusion 11 can be directly inserted into the limiting space 31 from between the ends of the two stoppers 33 away from the connecting portion 32, and the assembly is very convenient. Of course, in some other embodiments, the two stoppers 33 can also be arranged on the side of the connecting portion 32 facing the bottom plate 21. In this case, the light guide plate 10 can be installed in the back plate 20 first, and then the limiting member 30 can be installed on the back plate 20, and the limiting space 31 covers the limiting protrusion 11. Specifically, the two stoppers 33 cooperate with the connecting portion 32 to form a U-shaped structure, and an opening of the U-shaped structure is formed between the ends of the two stoppers 33 away from the connecting portion 32 .

[0040] In one embodiment, in combination Figure 3 and Figure 4As shown, the stop portion 33 includes a flat plate portion 331 and a boss portion 332. The flat plate portion 331 is arranged parallel to the side panel 22, the second fixing protrusion 35 is arranged on the side of the flat plate portion 331 facing the side panel 22, the boss portion 332 is arranged on the side of the flat plate portion 331 facing away from the back panel 20, and one end of the boss portion 332 close to the limiting space 31 is flush with one end of the flat plate portion 331 close to the limiting space 31. The flat plate portion 331 is arranged parallel to the side panel 22 and can be closely fitted with the side panel 22, thereby enhancing the connection stability between the stopper 30 and the side panel 22; by arranging the boss portion 332 on the side of the flat plate portion 331 facing away from the side panel 22, and making the end of the boss portion 332 close to the limit space 31 flush with the end of the flat plate portion 331 close to the limit space 31, the size of the limit space 31 in the second direction can be increased to meet the insertion of the larger size of the limit protrusion 11 into the limit space 31, and by increasing the size of the limit protrusion 11 and the limit space 31, the structural strength can be improved to ensure the limit effect of the stopper 30 on the light guide plate 10. Specifically, the flat plate portion 331 and the boss portion 332 cooperate to form an L-shaped structure, that is, the size of the boss portion 332 in the first direction is smaller than the size of the flat plate portion 331 in the first direction. Such an arrangement can save materials and reduce production costs while ensuring sufficient strength. Specifically, the connection portion 32 is also in the shape of a flat plate and is disposed parallel to the bottom plate 21 , and can be closely fitted with the bottom plate 21 , thereby enhancing the connection stability between the stopper 30 and the back plate 20 .

[0041] In one embodiment, Figure 4 As shown, the position-limiting member 30 further includes a reinforcing portion 36, which is disposed on the same side of the connecting portion 32 as the two stopper portions 33, and opposite ends of the reinforcing portion 36 are respectively connected to the two stopper portions 33. By providing the reinforcing portion 36 to connect the two stopper portions 33, the overall structural strength of the position-limiting member 30 can be enhanced and the service life can be extended.

[0042] In one embodiment, in combination Figure 3 and Figure 4 As shown, a hand-grip groove 321 is provided on one side of the connecting portion 32 facing away from the bottom plate 21. By inserting a finger into the hand-grip groove 321, the disassembly of the stopper 30 can be facilitated.

[0043] In one embodiment, the number of the limiting members 30 is two, and the two opposite side surfaces of the light guide plate 10 are provided with limiting protrusions 11, and the two limiting protrusions 11 are respectively inserted into the limiting spaces 31 of the two limiting members 30. By providing two limiting members 30 and two limiting protrusions 11, and inserting the two limiting protrusions 11 into the limiting spaces 31 of the two limiting members 30, the limiting effect of the limiting member 30 on the light guide plate 10 can be enhanced, and the light guide plate 10 can be effectively prevented from moving in the first direction, thereby improving the uniformity of the backlight brightness. During assembly, the two limiting members 30 are first installed on the back plate 20, so that the two limiting members 30 are both plugged into the bottom plate 21, and are respectively plugged into the opposite side panels 22 of the back plate 20, and then the light guide plate 10 is installed in the back plate 20, so that the limiting protrusions 11 on both sides of the light guide plate 10 are respectively inserted into the limiting spaces 31 of the limiting members 30.

[0044] In one embodiment, the backlight module 100 further includes components such as a reflective sheet, an optical film, a light source, and a middle frame. The reflective sheet is disposed between the light guide plate 10 and the bottom plate 21 of the back plate 20, the optical film is disposed on the side of the light guide plate 10 facing away from the reflective sheet, the light source is disposed on the peripheral side of the light guide plate 10, and the middle frame is connected to the bottom plate 21, and presses the light guide plate 10 against the bottom plate 21 of the back plate 20.

[0045] like Figure 5 As shown, the embodiment of the present application also provides a display device, and the display device includes the above-mentioned backlight module 100. The display device provided in this embodiment adopts the above-mentioned backlight module 100, and by making the bottom plate 21 and the side panel 22 of the back plate 20 both plugged into the limiter 30, the limiter 30 can be reliably limited to move relative to the back plate 20 along the first direction. By setting a limit protrusion 11 on the light guide plate 10, setting a limit space 31 on the limiter 30, and inserting the limit protrusion 11 into the limit space 31, the light guide plate 10 can be limited to move relative to the limiter 30 along the first direction. Since the limiter 30 and the back plate 20 are relatively stationary in the first direction, the light guide plate 10 can be limited to move relative to the back plate 20 along the first direction, effectively preventing the light guide plate 10 from moving in the first direction perpendicular to the thickness direction, thereby improving the uniformity of the backlight brightness. Specifically, the display device can be a girlfriend machine, an advertising machine, an educational machine, a tablet computer, etc.

[0046] In one embodiment, Figure 5 As shown, the display device further includes a touch screen 200 and a liquid crystal panel (not shown), and the liquid crystal panel and the touch screen 200 are sequentially stacked on the backlight module 100 .

[0047] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A backlight module, characterized in that: It includes a light guide plate, a back plate and a limit piece, wherein a limit protrusion is arranged on the peripheral side surface of the light guide plate, and the back plate includes a bottom plate and a side panel arranged around the bottom plate, the bottom plate and the side panel are both plugged into the limit piece, and both can limit the movement of the limit piece relative to the back plate along a first direction, and the first direction is perpendicular to the thickness direction of the light guide plate, the limit piece is provided with a limit space, and the limit protrusion is inserted into the limit space, so as to limit the movement of the light guide plate relative to the limit piece along the first direction.

2. The backlight module according to claim 1, characterized in that: The limiting member includes a connecting portion and two stop portions, the connecting portion is plugged into the bottom plate, the two stop portions are spaced apart along the first direction, the two stop portions are respectively connected to opposite ends of the connecting portion, and both are plugged into the side panel, and the limiting space is formed between the two stop portions.

3. The backlight module according to claim 2, characterized in that: The base plate is provided with a first fixing hole, the connecting portion is provided with a first fixing protrusion, and the first fixing protrusion is inserted into the first fixing hole; the two stop portions are provided with a second fixing protrusion, the side panel is provided with two second fixing holes, and the two second fixing protrusions are respectively inserted into the two second fixing holes.

4. The backlight module according to claim 3, characterized in that: The first fixing protrusion abuts against the hole wall of the first fixing hole on two opposite sides in the first direction, and the first fixing protrusion abuts against the hole wall of the first fixing hole on two opposite sides in the second direction, and the second direction is perpendicular to the thickness direction of the light guide plate and the first direction.

5. The backlight module according to claim 3, characterized in that: The second fixing protrusion has a parallel surface on a side facing away from the bottom plate. The parallel surface is arranged parallel to the bottom plate and abuts against the second fixing hole.

6. The backlight module according to claim 5, characterized in that: The second fixing protrusion has an inclined surface on one side facing the bottom plate, the inclined surface is arranged obliquely to the bottom plate, and the distance between the inclined surface and the bottom plate gradually increases in a direction away from the stop portion.

7. The backlight module according to claim 2, characterized in that: The two stop parts are both connected to a side of the connecting part facing away from the bottom plate, and the limiting protrusion can be inserted into the limiting space between ends of the two stop parts away from the connecting part.

8. The backlight module according to claim 2, characterized in that: The limiting member further includes a reinforcing portion, wherein the reinforcing portion and the two stop portions are arranged on the same side of the connecting portion, and opposite ends of the reinforcing portion are respectively connected to the two stop portions.

9. The backlight module according to any one of claims 1 to 8, characterized in that: The number of the limiting members is two, and the limiting protrusions are arranged on two opposite side surfaces of the light guide plate, and the two limiting protrusions are respectively inserted into the limiting spaces of the two limiting members.

10. A display device, characterized in that: It comprises the backlight module as described in any one of claims 1 to 9.

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