Combined backlight module with light leakage prevention function
By setting up a light shield in the backlight component, using reflective prisms and multi-layer light shields to reflect the light of the light emitting plate, the light leakage problem in the backlight module is solved, the light distribution uniformity and brightness are improved, and the practicality of the module is enhanced.
Patent Information
- Application Number
- CN202421114157.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In the existing backlight module, after the light emitted from the light strip enters the light guide plate, the light scattered from the edge of the light guide plate is reflected through the rubber frame, causing the light to scatter from the left and right sides and the light exit side of the backlight module, resulting in light leakage.
A light shield is provided in the backlight assembly, including a reflective prism and a multi-layer light shielding plate, to ensure that the light emitted by the light emitting plate is reflected, and the light is avoided from being reflected by the side wall of the mounting plate, thereby preventing light leakage.
It effectively avoids light from overflowing from the side walls of the backlight module, improves the uniformity and brightness of the light distribution, solves the light leakage problem, and enhances the practicality of the module.
Smart Images
Figure CN222354244U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight modules, in particular to a combined backlight module with the function of preventing light leakage. Background Art
[0002] In recent years, flat panel display technology, including liquid crystal display technology, has made great progress and has gradually replaced cathode ray tube (CRT) display technology. For a liquid crystal display, it includes a liquid crystal panel and a backlight module that provides light source to the liquid crystal panel. The backlight module generally has a light guide plate and other optical components, as well as a frame structure for fixing the light guide plate and other optical components. Its function is to provide sufficient brightness and uniformly distributed light source so that it can display images normally.
[0003] However, in most existing backlight modules, after the light emitted by the light strip enters the light guide plate, the light scattered from the edge of the light guide plate is reflected by the rubber frame, which easily causes the light to scatter from the left and right sides and the light-emitting side of the backlight module, thereby causing light leakage in the backlight module. Therefore, this utility model is proposed to solve the above problem. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a combined backlight module with anti-light leakage function, which has the advantages of anti-light leakage, etc., and solves the problem that in most existing backlight modules, after the light emitted by the light strip enters the light guide plate, the light scattered from the edge of the light guide plate is reflected by the rubber frame, which easily causes the light to scatter from the left and right sides and the light output side of the backlight module, thereby causing light leakage in the backlight module.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a combined backlight module with anti-light leakage, including a mounting plate with an opening structure on one side surface, a partition fixedly installed on the inner wall of the mounting plate, and a backlight component arranged inside the mounting plate and located on both sides of the partition.
[0006] The backlight assembly comprises a reflector plate embedded on the inner wall of the mounting plate, a light emitting member arranged inside the mounting plate and having one side in contact with the upper surface of the reflector plate, and a light shielding member is arranged inside the light emitting member.
[0007] The present application adopts the above-mentioned technical solution and sets a shading member in the backlight assembly so that the light emitted by the light-emitting panel can be reflected by the reflective prism in the shading member, thereby preventing the light from being reflected by the side wall of the mounting plate, thereby preventing the light from overflowing from the side wall of the mounting plate, solving the problem of light leakage in most existing backlight modules and improving the practicality of the present invention.
[0008] Furthermore, the light-emitting member includes two fixing members arranged inside the mounting plate, a light-emitting board arranged between the two fixing members, and a light guide plate arranged between the two fixing members and located above the light-emitting board.
[0009] The beneficial effect of adopting the above further solution is that by providing the light-emitting element, the backlight assembly can emit light.
[0010] Furthermore, the shading member includes a fixed block fixedly mounted on the surface of the side opposite to the mounting plate and the partition, a reflective prism fixedly mounted on the upper surfaces of the two fixed blocks, and a first shading plate arranged on the surface of the side opposite to the mounting plate and the partition, one side surface of the two fixed blocks are in contact with one side surface of the light-emitting plate, and the lower surfaces of the two first shading plates are in contact with the lower surface of the light guide plate.
[0011] The beneficial effect of adopting the above further solution is that by providing the shading member, the light is reflected by the side wall of the mounting plate, thereby preventing the light from overflowing from the side wall of the mounting plate.
[0012] Furthermore, the fixing member includes a magnetic blocking plate which is fixedly installed on both ends of the light-emitting board and has a hollow structure inside, and a metal plate which is fixedly installed inside the magnetic blocking plate.
[0013] The beneficial effect of adopting the above further solution is that by providing the fixing parts, the light emitting panel and the light guide plate can be easily installed.
[0014] Furthermore, openings are provided on both side surfaces of the mounting plate, and electromagnets are embedded on both side inner walls of the openings. Support plates for supporting the magnetic blocking plate are fixedly installed on both side inner walls of the bottom opening, and the size of the opening is the same as that of the magnetic blocking plate.
[0015] The beneficial effect of adopting the above further solution is that the installation of the fixing part is facilitated by providing the opening and the electromagnet.
[0016] Furthermore, a second light shielding plate is provided on the inner walls on both sides of the mounting plate and in contact with the upper surface of the first light shielding plate, and a third light shielding plate is provided on the inner walls on both sides of the mounting plate and in contact with the upper surface of the second light shielding plate.
[0017] The beneficial effect of adopting the above further solution is that the light is further blocked by providing the second shading plate and the third shading plate.
[0018] Furthermore, a lower diffusion film, a BEF film and a DBEF film are fixedly mounted on opposite surfaces of the two second shading plates in sequence from bottom to top, and the upper surface of the DBEF film is fixedly connected to the lower surface of the third shading plate.
[0019] The beneficial effect of adopting the above further solution is that by arranging the diffusion film, the BEF film and the DBEF film, the light dispersion effect can be enhanced.
[0020] Compared with the prior art, the utility model provides a combined backlight module with anti-light leakage function, which has the following beneficial effects:
[0021] The combined backlight module with anti-light leakage function has a shading piece arranged in the backlight assembly so that the light emitted by the light-emitting panel can be reflected by the reflective prism in the shading piece, thereby preventing the light from being reflected by the side wall of the mounting plate, thereby preventing the light from overflowing from the side wall of the mounting plate, thus solving the problem of light leakage in most existing backlight modules and improving the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of the utility model;
[0023] Figure 2 This is a schematic diagram of the connection relationship between the fixing member and the mounting plate of the utility model;
[0024] Figure 3 This is a schematic diagram of the mounting plate frame structure of the utility model.
[0025] In the figure: 1. mounting plate; 2. partition; 3. reflecting plate; 4. light-emitting plate; 5. light guide plate; 6. fixing block; 7. reflecting prism; 8. first shading plate; 9. magnetic blocking plate; 10. metal plate; 11. electromagnet; 12. supporting plate; 13. second shading plate; 14. third shading plate; 15. lower diffusion film; 16. BEF film; 17. DBEF film. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0027] See also Figure 1 and Figure 3 In this embodiment, a combined backlight module with anti-light leakage function includes a mounting plate 1 with an opening structure on one side surface, a partition 2 fixedly mounted on the inner wall of the mounting plate 1, and a backlight component arranged inside the mounting plate 1 and located on both sides of the partition 2.
[0028] See also Figure 1 and Figure 3In this embodiment, the backlight assembly includes a reflective plate 3 embedded on the inner wall of the mounting plate 1, a light-emitting component arranged inside the mounting plate 1 and contacting the upper surface of the reflective plate 3 on one side, and a shading component is arranged inside the light-emitting component.
[0029] The light-emitting member includes two fixing members arranged inside the mounting plate 1 , a light-emitting board 4 arranged between the two fixing members, and a light guide plate 5 arranged between the two fixing members and located above the light-emitting board 4 .
[0030] It should be noted that the use of multiple light-emitting panels 4 can increase the overall brightness. Each light source can provide light for the backlight module, so the more light sources there are, the greater the total amount of light emitted, thereby improving the overall brightness of the backlight module. At the same time, the use of multiple light guide plates 5 helps to achieve a more uniform light distribution. Each light guide plate 5 can diffuse the light to a larger area. Through the synergistic effect of multiple light guide plates 5, it can be ensured that the light is evenly distributed throughout the backlight module to avoid problems such as uneven brightness or dark areas. Finally, the use of multiple light-emitting panels 4 and light guide plates 5 also helps to improve the reliability of the backlight module. When one or a few light-emitting panels 4 or light guide plates 5 fail, other normally operating light-emitting panels 4 and light guide plates 5 can still provide enough light to ensure the normal operation of the display device. This redundant design reduces the risk of failure of the backlight module due to a single point of failure.
[0031] Secondly, the shading member includes a fixed block 6 fixedly mounted on the surface of the mounting plate 1 and the partition 2 on one side, a reflective prism 7 fixedly mounted on the upper surfaces of the two fixed blocks 6, and a first shading plate 8 arranged on the surface of the mounting plate 1 and the partition 2 on one side. One side surface of the two fixed blocks 6 is in contact with one side surface of the light-emitting panel 4, and the lower surfaces of the two first shading plates 8 are in contact with the lower surface of the light guide plate 5.
[0032] Specifically, when the light emitting panel 4 emits light, when the light escapes in the direction of the mounting plate 1 and the partition plate 2, the light will be reflected by the reflective prism 7, so that the light emitted by the light emitting panel 4 can all pass through the light guide plate 5. By setting the first shading plate 8, the light is prevented from overflowing from the side wall of the mounting plate 1, thereby solving the problem of light leakage in most existing backlight modules.
[0033] See also Figure 1 and Figure 2 In this embodiment, the fixing member includes a magnetic blocking plate 9 which is fixedly installed on both ends of the light-emitting board 4 and has a hollow structure inside, and a metal plate 10 which is fixedly installed inside the magnetic blocking plate 9.
[0034] Among them, openings are opened on both side surfaces of the mounting plate 1, and electromagnets 11 are embedded on the inner walls on both sides of the openings. Support plates 12 for supporting the magnetic blocking plate 9 are fixedly installed on the inner walls on both sides of the bottom opening, and the size of the opening is the same as that of the magnetic blocking plate 9.
[0035] It should be noted that the mounting plate 1 is made of a magnetic-blocking material, which prevents the electromagnet 11 from being affected by the electrical components inside the light-emitting board 4 when it is running.
[0036] Specifically, by setting the electromagnet 11 to adsorb the metal plate 10, the staff can replace the light-emitting panel 4 or the light-guiding panel 5 at will, and the staff only needs to replace the damaged light-emitting panel 4 or the light-guiding panel 5.
[0037] See also Figure 1 and Figure 2 In this embodiment, a second shading plate 13 is installed on the inner walls of both sides of the plate 1 and in contact with the upper surface of the first shading plate 8, and a third shading plate 14 is installed on the inner walls of both sides of the plate 1 and in contact with the upper surface of the second shading plate 13.
[0038] Specifically, by providing the second shading plate 13 and the third shading plate 14 , the light is further blocked, thereby preventing the light from overflowing from the side wall of the mounting plate 1 .
[0039] Furthermore, a lower diffusion film 15 , a BEF film 16 and a DBEF film 17 are fixedly mounted on opposite surfaces of the two second shading plates 13 in sequence from bottom to top, and the upper surface of the DBEF film is fixedly connected to the lower surface of the third shading plate 14 .
[0040] Specifically, by providing the lower diffusion film 15 , the BEF film 16 and the DBEF film 17 , the light dispersion effect can be enhanced.
[0041] The working principle of the above embodiment is: when the light emitting panel 4 emits light, when the light escapes in the direction of the mounting plate 1 and the partition plate 2, the light will be reflected by the reflective prism 7, so that the light emitted by the light emitting panel 4 can all pass through the light guide plate 5. By setting the first shading plate 8, the light is prevented from overflowing from the side wall of the mounting plate 1, thereby solving the problem of light leakage in most existing backlight modules.
[0042] The electrical components appearing in the article are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device for control such as a computer, and the existing public power connection technology is not described in detail in the article.
Claims
1. A combined backlight module with anti-light leakage function, characterized in that: It comprises a mounting plate (1) having an open surface on one side, a partition plate (2) fixedly mounted on the inner wall of the mounting plate (1), and a backlight assembly arranged inside the mounting plate (1) and located on both sides of the partition plate (2); The backlight assembly comprises a reflective plate (3) embedded on the inner wall of the mounting plate (1), a light-emitting component arranged inside the mounting plate (1) and having one side in contact with the upper surface of the reflective plate (3), and a light-shielding component is arranged inside the light-emitting component.
2. The combined backlight module with anti-light leakage function according to claim 1, characterized in that: The light-emitting member comprises two fixing members arranged inside the mounting plate (1), a light-emitting board (4) arranged between the two fixing members, and a light-guiding plate (5) arranged between the two fixing members and located above the light-emitting board (4).
3. The combined backlight module with anti-light leakage function according to claim 2, characterized in that: The shading member comprises a fixing block (6) fixedly mounted on a surface of a side opposite to the mounting plate (1) and the partition plate (2), a reflective prism (7) fixedly mounted on the upper surfaces of the two fixing blocks (6), and a first shading plate (8) arranged on a surface of a side opposite to the mounting plate (1) and the partition plate (2), one side surface of the two fixing blocks (6) both being in contact with a side surface of the light-emitting plate (4), and the lower surfaces of the two first shading plates (8) both being in contact with the lower surface of the light guide plate (5).
4. The combined backlight module with anti-light leakage function according to claim 2, characterized in that: The fixing member comprises a magnetic blocking plate (9) fixedly mounted on both ends of the light-emitting plate (4) and having a hollow structure inside, and a metal plate (10) fixedly mounted inside the magnetic blocking plate (9).
5. The light leakage-proof combined backlight module according to claim 4, characterized in that: The surfaces of both sides of the mounting plate (1) are provided with openings, the inner walls on both sides of the openings are inlaid with electromagnets (11), and support plates (12) for supporting the magnetic blocking plate (9) are fixedly mounted on the inner walls on both sides of the opening at the bottom, and the size of the opening is the same as that of the magnetic blocking plate (9).
6. The light leakage-proof combined backlight module according to claim 3, characterized in that: A second light shielding plate (13) is provided on the inner walls on both sides of the mounting plate (1) and in contact with the upper surface of the first light shielding plate (8); and a third light shielding plate (14) is provided on the inner walls on both sides of the mounting plate (1) and in contact with the upper surface of the second light shielding plate (13).
7. The combined backlight module with anti-light leakage function according to claim 6, characterized in that: A lower diffusion film (15), a BEF film (16) and a DBEF film (17) are fixedly mounted in sequence from bottom to top on the surfaces of the two second shading plates (13) on one side opposite to each other, and the upper surface of the DBEF film is fixedly connected to the lower surface of the third shading plate (14).