A backlight module for improving light emission uniformity

Abstract

This utility model relates to the field of backlight modules, and more particularly to a backlight module for improving light emission uniformity. It includes a screen, a refractive plate, a mounting plate, and a base plate. The base plate is located at the lower end of the mounting plate, and the refractive plate is located at the upper end of the mounting plate. A first refractive mirror is located inside the refractive plate, a second refractive mirror is located on one side of the first refractive mirror, and a third refractive mirror is located on one side of the second refractive mirror. The first, second, and third refractive mirrors are alternately connected. The screen is located at the upper end of the refractive plate. This device utilizes a group of refractive mirrors designed with an angle gradient array to achieve uniform light source processing, solving the problem of uneven light illumination in existing backlight modules, which leads to uneven illumination affecting the illumination effect during use.

Description

Technical Field

[0001] This utility model relates to the field of backlight modules, and more particularly to a backlight module that improves light emission uniformity. Background Technology

[0002] The backlight module is one of the core components of a liquid crystal display (LCD), used to provide a uniform, high-brightness light source for the LCD panel. Since liquid crystals themselves do not emit light, the backlight module emits light through light sources such as LEDs or CCFLs. After being diffused and reflected by multiple layers of optical materials such as light guide plates, diffusion films, and brightness enhancement films, a uniform surface light source is formed, ensuring clear screen display and vibrant colors. Its performance directly affects the brightness, contrast ratio, and energy efficiency of the display, and it is widely used in devices such as televisions, mobile phones, and tablets. With technological advancements, new backlight technologies such as Mini LED have further improved display effects and energy efficiency.

[0003] While existing technologies can achieve a certain backlight effect, they suffer from uneven illumination, which affects the lighting effect. To address this, we propose a backlight module that improves light emission uniformity, thus solving the aforementioned problem. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a backlight module that improves the uniformity of light emission.

[0005] The technical solution of this utility model is as follows: A backlight module for improving light emission uniformity includes a screen, a refractive plate, a mounting plate and a base plate. The mounting plate has a base plate at its lower end and a refractive plate at its upper end. The refractive plate has a first refractive mirror inside, a second refractive mirror on one side of the first refractive mirror and a third refractive mirror on one side of the second refractive mirror. The first, second and third refractive mirrors are alternately connected. The screen is located at the upper end of the refractive plate.

[0006] When using this device, the main design features are the light sources on the three arrayed mounting strips and the refractive plates between the light sources and the screen. Each light source has a different direct path angle and an oblique angle, so the angles of the multiple refractive mirrors are designed differently. With the combined effect of the light sources on both sides, the output light from refractive mirror one, refractive mirror two, and refractive mirror three enters the screen uniformly and perpendicularly, achieving uniform backlighting and making it highly practical.

[0007] Preferably, the base plate surface has reflective grooves arranged in a square array. The reflective grooves are concave in design. The concave design of the square array of reflective grooves on the base plate surface can reflect scattered light, reduce light loss, further improve the uniformity and utilization of light, and enhance the overall backlight effect.

[0008] Preferably, the mounting plate has a mounting groove inside, and a mounting strip is fixed inside the mounting groove by screws. A light source distributed in a linear array is fixed on the surface of the mounting strip. The mounting groove in the mounting plate is fixed to the mounting strip by screws, which facilitates the installation and replacement of the light source. The linear array of light sources can provide uniform initial light, provide stable light input for subsequent refraction, and ensure the efficient operation of the backlight system.

[0009] Preferably, a power interface is provided on one side of the mounting plate, and a controller is provided on the other side of the power interface. The integrated design of the power interface and the controller facilitates power supply and brightness adjustment, allowing users to flexibly control the brightness according to their needs, thereby improving the applicability and energy-saving effect of the equipment.

[0010] Preferably, the tilt angles of the first, second, and third refractories are 30 degrees, 45 degrees, and 60 degrees, respectively. The combination of tilt angles of 30°, 45°, and 60° can cover a wider range of light refraction, optimize the processing efficiency of incident light at different angles, ensure vertical light output, and avoid glare or color distortion problems.

[0011] Preferably, the base plate, mounting plate, refractive plate, and screen are bonded together with hot melt adhesive at their edges. The hot melt adhesive bonding method ensures a tight connection between the components (base plate, mounting plate, refractive plate, and screen), while also providing dustproof, shockproof, and moisture-proof properties, extending the service life of the equipment, and maintaining optical stability.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] I. By setting up three refracting mirrors that are alternately connected, this utility model can accurately refract incident light at different angles, so that the light enters the screen evenly and perpendicularly, effectively improving the uniformity of backlight, reducing uneven screen brightness or dark areas, and improving display quality.

[0014] II. Based on the first beneficial effect, this device achieves high uniformity, high energy efficiency, and ease of maintenance in the backlight system through the alternating layout of multi-angle refractories, concave reflective groove design, modular light source installation, and intelligent control interface. The optimized combination of tilting refractories and hot melt adhesive sealing process further enhance optical performance and structural reliability, giving this device significant practical value and market competitiveness in the display device field.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the refractive plate of this utility model;

[0019] Figure 4 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle.

[0020] Reference numerals in the attached diagram: 1. Screen; 2. Reflector plate; 3. Light source; 4. Mounting slot; 5. Reflector slot; 6. Base plate; 7. Mounting plate; 8. Mounting strip; 9. Refractor three; 10. Refractor one; 11. Refractor two; 12. Power interface; 13. Controller. Detailed Implementation

[0021] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Please see Figures 1-4 As shown, this embodiment is a backlight module for improving light emission uniformity, including a screen 1, a refractive plate 2, a mounting plate 7 and a base plate 6. The base plate 6 is provided at the lower end of the mounting plate 7, and the refractive plate 2 is provided at the upper end of the mounting plate 7. A first refractive mirror 10 is provided inside the refractive plate 2. A second refractive mirror 11 is provided on one side of the first refractive mirror 10, and a third refractive mirror 9 is provided on one side of the second refractive mirror 11. The first refractive mirror 10, the second refractive mirror 11 and the third refractive mirror 9 are alternately connected. The screen 1 is provided at the upper end of the refractive plate 2.

[0027] When this device is in use, the main design features are the light sources 3 on the three arrayed mounting strips 8 and the refractive plates 2 between the light sources 3 and the screen 1. Each light source 3 has a different direct path angle and an oblique angle, so the angles of the multiple refractive mirrors are designed differently. With the combined effect of the light sources 3 on both sides, the output light from the first refractive mirror 10, the second refractive mirror 11, and the third refractive mirror 9 enters the screen 1 uniformly and perpendicularly, achieving uniform backlighting and making it highly practical.

[0028] The surface of the base plate 6 is provided with reflective grooves 5 arranged in a square array. The reflective grooves 5 are concave in design. The square array of reflective grooves 5 on the surface of the base plate 6 is concave in design, which can reflect scattered light, reduce light loss, further improve the uniformity and utilization of light, and enhance the overall backlight effect.

[0029] Example 2

[0030] Please see Figures 1-4 As shown, this embodiment further includes, based on embodiment 1, a mounting groove 4 inside the mounting plate 7, a mounting strip 8 fixed inside the mounting groove 4 by screws, and light sources 3 arranged in a linear array fixed on the surface of the mounting strip 8. The mounting groove 4 inside the mounting plate 7 is fixed to the mounting strip 8 by screws, which facilitates the installation and replacement of the light sources 3. The linear array of light sources 3 can provide uniform initial light, provide stable light input for subsequent refraction, and ensure the efficient operation of the backlight system.

[0031] The mounting plate 7 has a power interface 12 on one side and a controller 13 on the other side. The integrated design of the power interface 12 and the controller 13 facilitates power supply and brightness adjustment. Users can flexibly control the brightness according to their needs, thereby improving the applicability and energy-saving effect of the equipment.

[0032] The tilt angles of refractor 10, refractor 21, and refractor 39 are 30 degrees, 45 degrees, and 60 degrees, respectively. The combination of tilt angles of 30°, 45°, and 60° can cover a wider range of light refraction, optimize the processing efficiency of incident light at different angles, ensure vertical light output, and avoid glare or color distortion problems.

[0033] The base plate 6, mounting plate 7, refractive plate 2 and screen 1 are bonded together with hot melt adhesive at the edges. The hot melt adhesive bonding method ensures a tight connection between the components (base plate 6, mounting plate 7, refractive plate 2 and screen 1), while also providing dustproof, shockproof and moisture-proof performance, extending the service life of the equipment and maintaining optical stability.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A backlight module for improving light emission uniformity, comprising a screen (1), a refractive plate (2), a mounting plate (7), and a base plate (6), characterized in that: The mounting plate (7) has a base plate (6) at its lower end and a refraction plate (2) at its upper end. The refraction plate (2) has a first refraction mirror (10) inside. The first refraction mirror (10) has a second refraction mirror (11) on one side and a third refraction mirror (9) on one side. The first refraction mirror (10), the second refraction mirror (11) and the third refraction mirror (9) are connected alternately. The refraction plate (2) has a screen (1) at its upper end.

2. The backlight module for improving light emission uniformity according to claim 1, characterized in that: The base plate (6) has reflective grooves (5) arranged in a square array on its surface, and the reflective grooves (5) are concave in design.

3. A backlight module for improving light emission uniformity according to claim 1, characterized in that: The mounting plate (7) has a mounting groove (4) inside, and a mounting strip (8) is fixed inside the mounting groove (4) by screws. Light sources (3) are fixed on the surface of the mounting strip (8) in a linear array.

4. A backlight module for improving light emission uniformity according to claim 3, characterized in that: The mounting plate (7) has a power interface (12) on one side, and a controller (13) is provided on the other side of the power interface (12).

5. A backlight module for improving light emission uniformity according to claim 1, characterized in that: The tilt angles of the first (10), the second (11) and the third (9) are 30 degrees, 45 degrees and 60 degrees, respectively.

6. A backlight module for improving light emission uniformity according to claim 1, characterized in that: The base plate (6), mounting plate (7), refractive plate (2) and screen (1) are bonded together by hot melt adhesive at their edges.

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