Backlight module, display module and display device

Abstract

The present application provides a backlight module, a display module and a display device. The backlight module includes a back substrate and a lamp board assembly, the lamp board assembly includes: a lamp board, the lamp board is carried on the back substrate; and a plurality of light-emitting modules arranged at intervals, the plurality of light-emitting modules are carried on the lamp board, the light-emitting module includes a light-emitting element, a liquid crystal glass cover and a reflective layer, the light-emitting element is carried on the lamp board, the liquid crystal glass cover covers the periphery of the light-emitting element, and one end of the liquid crystal glass cover abuts the lamp board, the other end opposite to the liquid crystal glass cover is provided with a light outlet, the reflective layer is provided on the surface of the liquid crystal glass cover facing the light-emitting element, and the reflective layer is used to reflect the light beam emitted by the light-emitting element to the light outlet. The backlight module provided by the present application can avoid the generation of halo to improve the light output quality.

Description

Technical Field

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

[0002] With the development of display panel technology, people are increasingly pursuing lighter, thinner, and larger flexible displays. However, when a single backlight partition in existing displays emits light, it is inevitable that a halo will be generated, which affects the display's visual experience. Summary of the Invention

[0003] In a first aspect, the present application provides a backlight module, comprising a back substrate and a light board assembly, wherein the light board assembly comprises:

[0004] a light board, the light board being carried on the back substrate; and

[0005] A plurality of light-emitting modules are arranged at intervals, and the plurality of light-emitting modules are carried by the light board. The light-emitting modules include a light-emitting element, a liquid crystal glass cover, and a reflective layer. The light-emitting element is carried by the light board, and the liquid crystal glass cover covers the periphery of the light-emitting element, and one end of the liquid crystal glass cover abuts the light board, and the other end of the liquid crystal glass cover opposite to the light board is provided with a light outlet. The reflective layer is provided on the surface of the liquid crystal glass cover facing the light-emitting element, and the reflective layer is used to reflect the light beam emitted by the light-emitting element to the light outlet.

[0006] Wherein, the liquid crystal glass cover comprises:

[0007] a glass cover body, wherein the glass cover body covers the periphery of the light-emitting element, one end of the glass cover body abuts the light board, the light outlet is provided at the other end opposite to the glass cover body, and the reflective layer is provided on the surface of the glass cover body facing the light-emitting element; and

[0008] Liquid crystal is arranged inside the glass cover body and is used to block the light beam passing through the reflective layer from passing through the glass cover body according to a preset arrangement.

[0009] The liquid crystal glass cover has an inner surface facing the light-emitting element and an outer surface opposite to the inner surface. The liquid crystal glass cover includes a first end abutting the light panel and a second end opposite to the first end. The distance between the inner surface and the outer surface at the first end is a first thickness, and the distance between the inner surface and the outer surface at the second end is a second thickness, and the second thickness is less than the first thickness.

[0010] The minimum distance between the orthographic projection of the second end on the light board and the light-emitting element is greater than the minimum distance between the orthographic projection of the first end on the light board and the light-emitting element.

[0011] The minimum distance between the orthographic projection of the portion of the outer surface located at the second end on the lamp board and the light-emitting element is smaller than the minimum distance between the orthographic projection of the portion of the outer surface located at the first end on the lamp board and the light-emitting element.

[0012] Wherein, the light board abuts against the back substrate;

[0013] The light emitting module further includes:

[0014] A heat conducting member is provided inside the liquid crystal glass cover and abuts against a surface of the lamp board that is away from the back substrate.

[0015] Wherein, the heat conducting member comprises:

[0016] a heat conducting portion, the heat conducting portion being disposed inside the liquid crystal glass cover and abutting against a surface of the light board on a side facing away from the back substrate; and

[0017] The light absorbing layer is provided on the surface of the heat conducting portion and is used for absorbing the light beam that passes through the light reflecting layer and enters the interior of the liquid crystal glass cover.

[0018] Wherein, the backlight module further includes:

[0019] A diffusion plate is provided on a side of the light emitting module away from the light board, and the diffusion plate covers the light outlet.

[0020] The backlight module provided by the present application includes a plurality of light-emitting modules, each of which includes a light-emitting element, a liquid crystal glass cover and a reflective layer. The light-emitting element is located in the receiving space of the liquid crystal glass cover, and the light emitted by the light-emitting element toward the surrounding areas of the light-emitting element can be reflected to the light outlet of the liquid crystal glass cover by the reflective layer arranged on the liquid crystal glass cover facing the light-emitting element, so that the light beam emitted by the light-emitting element through the light outlet is concentrated, which can avoid the light-emitting element from emitting light too diffusely toward the surrounding areas of the light-emitting element, thereby avoiding the generation of halo, and further improving the light output quality of the backlight module. In addition, the backlight module can improve the design and production efficiency of the backlight module by modularizing the light-emitting modules. Therefore, the backlight module provided by the present application can avoid the generation of halo to improve the light output quality.

[0021] In a second aspect, the present application further provides a display module, comprising:

[0022] The backlight module as described in the first aspect; and

[0023] A display screen is provided on a side of the light emitting module away from the light board, and the display screen is provided corresponding to the light outlet.

[0024] The display module provided in the present application can improve the light output quality because the backlight module can avoid the generation of halo, thereby achieving uniform light output and better display quality on the display screen, thereby improving the user experience.

[0025] In a third aspect, the present application further provides a display device, comprising:

[0026] The main body of the equipment; and

[0027] As for the display module described in the second aspect, the display module is carried by the device body.

[0028] The display device provided in the present application can improve the light output quality because the backlight module can avoid the generation of halo, thereby achieving better display quality and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A schematic structural diagram of a backlight module provided in one embodiment of the present application;

[0031] Figure 2 for Figure 1 Schematic diagram of the structure of the light-emitting module Figure 1 ;

[0032] Figure 3 for Figure 2 A top view of the light-emitting module;

[0033] Figure 4 for Figure 1 Schematic diagram of the structure of the light-emitting module Figure 2 ;

[0034] Figure 5 for Figure 4 A top view of the light-emitting module;

[0035] Figure 6 for Figure 3 Schematic diagram of the structure after being cut along line AA;

[0036] Figure 7 for Figure 2 Schematic diagram of light output from the light-emitting module;

[0037] Figure 8 for Figure 5 Schematic diagram of the structure after being cut along line BB;

[0038] Figure 9 for Figure 4 Schematic diagram of light output from the light-emitting module;

[0039] Figure 10 for Figure 7 Schematic diagram of the structure in which the heat conducting element is arranged inside the liquid crystal glass cover;

[0040] Figure 11 for Figure 9 Schematic diagram of the structure in which the heat conducting element is arranged inside the liquid crystal glass cover;

[0041] Figure 12 A schematic structural diagram of a display module provided in one embodiment of the present application;

[0042] Figure 13 A schematic structural diagram of a display module provided in another embodiment of the present application;

[0043] Figure 14 A schematic structural diagram of a display device provided in one embodiment of the present application.

[0044] Figure numbers: backlight module 10; back substrate 100; lamp board assembly 200; light-emitting module 210; light-emitting element 211; liquid crystal glass cover 212; light outlet 2121; glass cover body 2122; liquid crystal 2123; inner surface 2124; outer surface 2125; first end 2126; second end 2127; reflective layer 213; heat-conducting member 214; heat-conducting portion 2141; light-absorbing layer 2142; lamp board 220; diffuser 300; display screen 20; display module 1; device body 2; display device 3; first thickness D1; ​​second thickness D2. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0046] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0047] References herein to "embodiments" or "implementations" mean that a particular feature, structure, or characteristic described in connection with the embodiments or implementations may be included in at least one embodiment of the present application. The appearance of such phrases in various places in the specification does not necessarily refer to the same embodiment, nor do they constitute independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0048] This application provides a backlight module 10. Please refer to Figure 1-Figure 5 , Figure 1 A schematic structural diagram of a backlight module provided in one embodiment of the present application; Figure 2 for Figure 1 Schematic diagram of the structure of the light-emitting module Figure 1 ; Figure 3 for Figure 2 A top view of the light-emitting module; Figure 4 for Figure 1 Schematic diagram of the structure of the light-emitting module Figure 2 ; Figure 5 for Figure 4 Schematic top view of the light-emitting module. In this embodiment, the backlight module 10 includes a back substrate 100 and a lamp board assembly 200. The lamp board assembly 200 includes a lamp board 220 and a plurality of light-emitting modules 210 arranged at intervals. The lamp board 220 is carried on the back substrate 100. The plurality of light-emitting modules 210 are carried on the lamp board 220. The light-emitting module 210 includes a light-emitting element 211, a liquid crystal glass cover 212 and a reflective layer 213. The light-emitting element 211 is carried on the lamp board 220. The liquid crystal glass cover 212 is arranged on the periphery of the light-emitting element 211, and one end of the liquid crystal glass cover 212 abuts the lamp board 220, and the other opposite end of the liquid crystal glass cover 212 is provided with a light outlet 2121. The reflective layer 213 is provided on the surface of the liquid crystal glass cover 212 facing the light-emitting element 211. The reflective layer 213 is used to reflect the light beam emitted by the light emitting element 211 to the light outlet 2121 .

[0049] In this embodiment, the backlight module 10 is applied to various display devices 3, such as mobile phones, tablet computers, laptop computers, PDAs, personal computers (PCs), and personal digital assistants (PDAs).

[0050] In this embodiment, a light-emitting module 210 is provided, and the liquid crystal glass cover 212 is provided to cover the periphery of the light-emitting element 211, so that the light-emitting element 211 is covered within the receiving space of the liquid crystal glass cover 212. A reflective layer 213 is provided on the surface of the liquid crystal glass cover 212 facing the light-emitting element 211. As a result, light emitted by the light-emitting element 211 that is emitted toward the periphery of the light-emitting element 211 is reflected on the reflective layer 213 and reflected toward the light outlet 2121 of the liquid crystal glass cover 212. As a result, the light beam emitted by the light-emitting element 211 is concentrated at the light outlet 2121, thereby preventing the light emitted by the light-emitting element 211 from being excessively diffused toward the periphery of the light-emitting element 211, thereby preventing the light from generating a halo on the light-emitting element 211 and improving the light output quality of the backlight module 10.

[0051] In addition, since the liquid crystal glass cover 212 can play a supporting role, the liquid crystal glass cover 212 can replace the supporting frame, which can not only prevent the light emitting element 211 from having a halo phenomenon, but also play a supporting role.

[0052] In addition, the light emitting module 210 can be designed and produced in a modular manner to improve design and production efficiency and reduce design and production costs, and can be repaired and replaced efficiently and quickly, thereby improving maintenance efficiency and reducing maintenance costs.

[0053] Optionally, each light-emitting module 210 includes one or more light-emitting elements 211. The area where each light-emitting module 210 is located can be called a backlight partition. The light-emitting element 211 is a lamp bead, which can be, but is not limited to, a light-emitting diode (LED) lamp bead, a mini light-emitting diode (Mini LED) lamp bead, or a micro light-emitting diode (micro LED) lamp bead.

[0054] Optionally, the reflective layer 213 is a reflective film layer formed by reflective particles disposed on the surface of the liquid crystal glass cover 212 facing the light-emitting element 211, or the reflective layer 213 is a reflective film layer. The combination of the reflective layer 213 and the liquid crystal glass cover 212 is also referred to as an adaptive zone dimming liquid crystal 2123 glass reflector.

[0055] Optionally, the light board 220 is stacked with the back substrate 100, or the back substrate 100 includes a bottom wall and a peripheral side wall connected by a bend, the light board 220 is stacked with the bottom wall of the back substrate 100, and the peripheral side wall of the back substrate 100 is arranged around the periphery of the light board 220 to accommodate the light board 220, etc.

[0056] In summary, the backlight module 10 provided in the present application includes a plurality of light-emitting modules 210, each of which includes a light-emitting element 211, a liquid crystal glass cover 212, and a reflective layer 213. The light-emitting element 211 is located within the receiving space of the liquid crystal glass cover 212, and the light emitted by the light-emitting element 211 toward the surrounding areas of the light-emitting element 211 can be reflected by the reflective layer 213 disposed on the liquid crystal glass cover 212 facing the light-emitting element 211 to the light outlet 2121 of the liquid crystal glass cover 212, so that the light beam emitted by the light-emitting element 211 through the light outlet 2121 is concentrated, thereby preventing the light-emitting element 211 from excessively diffusing light toward the surrounding areas of the light-emitting element 211, thereby avoiding the generation of halo, and thereby improving the light output quality of the backlight module 10. In addition, by modularizing the light-emitting modules 210, the backlight module 10 can improve the design and production efficiency of the backlight module 10. Therefore, the backlight module 10 provided in the present application can avoid the generation of halo and improve the light output quality.

[0057] Please refer to Figure 6-Figure 9 , Figure 6 for Figure 3 Schematic diagram of the structure after being cut along line AA; Figure 7 for Figure 2 Schematic diagram of light output from the light-emitting module; Figure 8 for Figure 5 Schematic diagram of the structure after being cut along line BB; Figure 9 for Figure 4Schematic diagram of light emission of the light-emitting module. In this embodiment, the liquid crystal glass cover 212 includes a glass cover body 2122 and a liquid crystal 2123. The glass cover body 2122 covers the periphery of the light-emitting element 211, and one end of the glass cover body 2122 abuts the light board 220. The light outlet 2121 is provided at the other end opposite to the glass cover body 2122. The reflective layer 213 is provided on the surface of the glass cover body 2122 facing the light-emitting element 211. The liquid crystal 2123 is provided inside the glass cover body 2122, and the liquid crystal 2123 is used to block the light beam that passes through the reflective layer 213 from passing through the glass cover body 2122 in a preset arrangement.

[0058] Because the reflective layer 213 is unable to reflect all of the light beam incident upon the light-emitting element 211 toward the light outlet 2121, a portion of the light beam may pass through the reflective layer 213 and enter the interior of the glass cover body 2122. In this embodiment, the liquid crystal glass cover 212 includes a glass cover body 2122 and liquid crystals 2123 disposed within the glass cover body 2122. The liquid crystals 2123 are capable of arranging themselves in a predetermined arrangement when the light-emitting element 211 emits light, thereby preventing the light beam passing through the reflective layer from passing through the glass cover body 2122 and departing from the surface of the reflective layer 213. This further prevents the light-emitting element 211 from diffusing light in the surrounding areas thereof, thereby further preventing a halo phenomenon in the light output.

[0059] The liquid crystal 2123 controls the deflection angle, arrangement, etc. of the liquid crystal 2123 through a liquid crystal 2123 control system to prevent the light beam from passing through the glass body of the liquid crystal 2123. Optionally, the liquid crystal 2123 control system is integrated into the light board 220 or provided in an external system.

[0060] Please refer again Figure 6-Figure 9 In this embodiment, the liquid crystal glass cover 212 has an inner surface 2124 facing the light-emitting element 211 and an outer surface 2125 opposite the inner surface 2124. The liquid crystal glass cover 212 includes a first end 2126 that abuts the light board 220 and a second end 2127 opposite the first end 2126. The distance between the inner surface 2124 and the outer surface 2125 at the first end 2126 is a first thickness D1, and the distance between the inner surface 2124 and the outer surface 2125 at the second end 2127 is a second thickness D2, which is less than the first thickness D1.

[0061] Optionally, by designing the first thickness D1 and the second thickness D2, the angle formed by the inner surface 2124 and the light board 220 can be designed to design the reflection angle of the light beam emitted from the light-emitting element 211 to the reflective layer 213, thereby adjusting according to actual needs to achieve a better light-emitting effect.

[0062] In one embodiment (see Figure 6 and Figure 7 ), the minimum distance between the orthographic projection of the second end 2127 on the lamp board 220 and the light-emitting element 211 is greater than the minimum distance between the orthographic projection of the first end 2126 on the lamp board 220 and the light-emitting element 211, so as to increase the size of the light outlet 2121, thereby reducing the minimum distance between the light outlets 2121 of two adjacent light-emitting modules 210, thereby preventing the backlight module 10 from having uneven brightness due to the light being too dark between two adjacent light-emitting modules 210.

[0063] In another embodiment (see Figure 8 and Figure 9 ), the minimum distance between the orthographic projection of the portion of the outer surface 2125 located at the second end 2127 on the lamp board 220 and the light-emitting element 211 is smaller than the minimum distance between the orthographic projection of the portion of the outer surface 2125 located at the first end 2126 on the lamp board 220 and the light-emitting element 211, so as to increase the gap between two adjacent light-emitting modules 210, thereby increasing the installation space when installing and removing the light-emitting modules 210, improving the installation and removal efficiency of the light-emitting modules 210, and avoiding obstruction of the adjacent light-emitting modules 210 when installing and removing one light-emitting module 210.

[0064] Please refer again Figure 6-Figure 9 In this embodiment, the light board 220 abuts against the back substrate 100. The light emitting module 210 further includes a heat conducting member 214. The heat conducting member 214 is disposed inside the liquid crystal glass cover 212 and abuts against a surface of the light board 220 facing away from the back substrate 100.

[0065] In this embodiment, the light emitting module 210 further includes a heat conducting member 214, which is disposed inside the liquid crystal glass cover 212 and abuts against the light board 220, so that the heat conducting member 214 can absorb the heat inside the liquid crystal glass cover 212 and transfer it through the light board 220 and the back substrate 100, thereby improving the heat dissipation effect and preventing the temperature of the liquid crystal glass cover 212 from being too high and affecting the normal operation of the light emitting element 211. Figure 7 and Figure 9The wavy lines around the heat conductor 214 are schematic routes for heat transfer.

[0066] Optionally, the heat conductive member 214 is a metal or an alloy. For example, the heat conductive member 214 is copper, nickel, silver, or a nickel-copper alloy, etc., as long as the heat conductive member 214 can achieve a heat conducting effect.

[0067] Optionally, the heat conducting member 214 is continuously disposed along a peripheral sidewall path of the liquid crystal glass cover 212 , or the heat conducting member 214 includes a plurality of spaced-apart portions and is disposed in multiple directions of the liquid crystal glass cover 212 .

[0068] Please refer to Figure 10 and Figure 11 , Figure 10 for Figure 7 Schematic diagram of the structure in which the heat conducting element is arranged inside the liquid crystal glass cover; Figure 11 for Figure 9 Schematic diagram of the structure in which the heat conducting member is located inside the liquid crystal glass cover. In this embodiment, the heat conducting member 214 includes a heat conducting portion 2141 and a light absorbing layer 2142. The heat conducting portion 2141 is located inside the liquid crystal glass cover 212 and abuts the surface of the light board 220 facing away from the back substrate 100. The light absorbing layer 2142 is located on the surface of the heat conducting portion 2141 and is used to absorb the light beam that passes through the reflective layer 213 and enters the liquid crystal glass cover 212.

[0069] In this embodiment, the heat conducting member 214 includes a heat conducting portion 2141 and a light absorbing layer 2142. The light absorbing layer 2142 is provided on the surface of the heat conducting portion 2141 and can absorb the light beam passing through the reflective layer 213 to further block the light beam from passing through the liquid crystal glass cover 212. The light absorbing layer 2142 can also assist the heat conducting portion 2141 in heat transfer, thereby improving the heat conduction effect.

[0070] Optionally, the light absorbing layer 2142 is a dark spray material, a dark film layer, a dark plating layer, or dark particles, etc. For example, the light absorbing layer 2142 is obtained by electroplating blackening treatment on the surface of the heat conducting portion 2141, so the heat conducting member 214 can be called a blackened heat pipe.

[0071] Please refer again Figure 7 and Figure 9 In this embodiment, the backlight module 10 further includes a diffusion plate 300 . The diffusion plate 300 is disposed on a side of the light emitting module 210 away from the light board 220 , and the diffusion plate 300 covers the light outlet 2121 .

[0072] In this embodiment, the diffusion plate 300 is disposed at the light outlet 2121 to improve the light uniformity of the light beams emitted through the plurality of light outlets 2121 , which is beneficial for the backlight module 10 to emit light uniformly in a large range, thereby improving the light output quality.

[0073] This application also provides a display module 1. Please refer to Figure 12 and Figure 13 , Figure 12 A schematic structural diagram of a display module provided in one embodiment of the present application; Figure 13 This is a schematic diagram of the structure of a display module provided in another embodiment of the present application. In this embodiment, the display module 1 includes the backlight module 10 and the display screen 20 as described in any of the aforementioned embodiments. The display screen 20 is disposed on the side of the light-emitting module 210 facing away from the light board 220, and the display screen 20 is arranged corresponding to the light outlet 2121.

[0074] The display module 1 provided in the present application can improve the light output quality because the backlight module 10 can avoid the generation of halo, thereby achieving uniform light output and better display quality of the display screen 20, thereby improving the user experience.

[0075] This application also provides a display device 3. Please refer to Figure 14 , Figure 14 This is a schematic diagram of the structure of a display device provided in one embodiment of the present application. In this embodiment, the display device 3 includes a device body 2 and a display module 1 as described in the above embodiment. The display module 1 is carried by the device body 2.

[0076] In this embodiment, the display device 3 can be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, a handheld computer, a PC, a PDA, etc.

[0077] In this embodiment, the display device 3 improves light output quality because the backlight module 10 can avoid generating halo, thereby achieving better display quality and improving user experience.

[0078] Optionally, the device body 2 includes a middle frame, a power supply, and a back cover. One side of the middle frame is used to accommodate the display module 1, and the other side is used to accommodate the power supply. The power supply is electrically connected to the display module 1 and is used to power the display module 1. The back cover is connected to the middle frame to seal the power supply. Alternatively, the device body 2 includes a power supply and a housing. The power supply is electrically connected to the display module 1 and is used to power the display module 1. The housing is used to accommodate the display module 1 and the power supply. The device is not limited to this and may have other structures, which are not limited here.

[0079] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application, and these improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A backlight module, comprising a back substrate and a light board assembly, characterized in that: The light panel assembly includes: a light board, the light board being carried on the back substrate; and a plurality of light-emitting modules arranged at intervals, the plurality of light-emitting modules being carried by the light board, the light-emitting modules comprising a light-emitting element, a liquid crystal glass cover, and a reflective layer; the light-emitting element being carried by the light board, the liquid crystal glass cover covering the periphery of the light-emitting element, one end of the liquid crystal glass cover abutting the light board, the other end of the liquid crystal glass cover being provided with a light outlet; the reflective layer being provided on a surface of the liquid crystal glass cover facing the light-emitting element, the reflective layer being configured to reflect a light beam emitted by the light-emitting element toward the light outlet; The liquid crystal glass cover has an inner surface facing the light-emitting element and an outer surface opposite to the inner surface. The liquid crystal glass cover includes a first end abutting the light panel and a second end opposite to the first end. The distance between the inner surface and the outer surface at the first end is a first thickness, and the distance between the inner surface and the outer surface at the second end is a second thickness, and the second thickness is less than the first thickness.

2. The backlight module according to claim 1, wherein: The liquid crystal glass cover comprises: a glass cover body, wherein the glass cover body covers the periphery of the light-emitting element, one end of the glass cover body abuts the light board, the light outlet is provided at the other end opposite to the glass cover body, and the reflective layer is provided on the surface of the glass cover body facing the light-emitting element; and Liquid crystal is arranged inside the glass cover body and is used to block the light beam passing through the reflective layer from passing through the glass cover body according to a preset arrangement.

3. The backlight module according to claim 1, wherein: The minimum distance between the orthographic projection of the second end on the light board and the light-emitting element is greater than the minimum distance between the orthographic projection of the first end on the light board and the light-emitting element.

4. The backlight module according to claim 1, wherein: The minimum distance between the orthographic projection of the portion of the outer surface at the second end on the light board and the light emitting element is smaller than the minimum distance between the orthographic projection of the portion of the outer surface at the first end on the light board and the light emitting element.

5. The backlight module according to claim 1, wherein: The light board abuts against the back board; The light emitting module further includes: A heat conducting member is provided inside the liquid crystal glass cover and abuts against a surface of the lamp board that is away from the back substrate.

6. The backlight module according to claim 5, wherein: The heat conducting member comprises: a heat conducting portion, the heat conducting portion being disposed inside the liquid crystal glass cover and abutting against a surface of the light board on a side facing away from the back substrate; and The light absorbing layer is provided on the surface of the heat conducting portion and is used for absorbing the light beam that passes through the light reflecting layer and enters the interior of the liquid crystal glass cover.

7. The backlight module according to any one of claims 1 to 6, wherein: The backlight module further includes: A diffusion plate is provided on a side of the light emitting module away from the light board, and the diffusion plate covers the light outlet.

8. A display module, characterized in that: The display module includes: The backlight module according to any one of claims 1 to 7; and A display screen is provided on a side of the light emitting module away from the light board, and the display screen is provided corresponding to the light outlet.

9. A display device, characterized in that: The display device comprises: The main body of the equipment; and The display module according to claim 8, wherein the display module is carried by the device body.

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