Optimization of microstructure of light-emitting diode (LED) backlight dodging plate

Abstract

The utility model relates to the technical field of LED backlight sources, and discloses an LED backlight source dodging plate microstructure optimization, which comprises a backlight source and a dodging plate, the interior of the backlight source is slidably connected with an installation mechanism, and the interior of the dodging plate is provided with a dodging mechanism; the mounting mechanism comprises two guide rods, cavities are formed in the left side and the right side of the interior of the backlight source, the front sides and the rear sides of the guide rods are fixedly connected to the inner walls of the front sides and the rear sides of the cavities, the guide rods are sleeved with reset springs, and the outer walls of the guide rods are slidably connected with connecting blocks; and clamping blocks are fixedly connected to the sides, close to each other, of the two connecting blocks. According to the utility model, the positioning rod at the bottom of the light homogenizing plate is matched with the positioning groove in the backlight source to realize primary limiting, and then the mounting of the light homogenizing plate is controlled through the movement of the clamping block, so that the light homogenizing plate can be accurately and quickly mounted in the backlight source, and the assembly efficiency is greatly improved.

Description

LED backlight homogenizer microstructure optimization Technical Field

[0001] This utility model relates to the field of LED backlight technology, and in particular to the optimization of the microstructure of LED backlight light-diffusing plates. Background Technology

[0002] LED backlighting refers to using light-emitting diodes (LEDs) as the light source behind a liquid crystal display (LCD). By using different semiconductor materials, LEDs exhibit different light-emitting characteristics, enabling the display to provide a variety of colors such as red, green, blue, cyan, orange, amber, and white. LED backlighting features low power consumption, low heat generation, high brightness, and long lifespan, and also boasts advantages in color gamut performance, enhancing the color effect and contrast of LCD displays.

[0003] The function of LED backlight is to provide a backlight for the LCD screen. Since the LCD screen itself does not emit light, it can provide uniform light to ensure normal display in all areas, thereby improving display uniformity and quality. It has high brightness and high contrast, which can make the image clear and vivid in various environments. It also has energy-saving and environmentally friendly characteristics such as low power consumption and low heat generation. It has a long service life, which can reduce the frequency of replacement and maintenance costs. Its small size and light weight are conducive to the realization of thin and light design. It can also support a variety of display technologies such as LCD monitors, TVs, and mobile phone screens.

[0004] In existing technologies, some LED backlights lack precise mounting and positioning structures for their light-diffusing plates. When installing the light-diffusing plate, operators find it difficult to quickly align it to the appropriate position, which easily leads to repeated adjustments during the installation process and increases installation time costs. This not only affects installation efficiency, but also seriously impacts the overall production progress or maintenance efficiency during large-scale production or when repairing and replacing light-diffusing plates. Therefore, this paper proposes to optimize the microstructure of LED backlight light-diffusing plates to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides an optimized microstructure for LED backlight doubling plates, aiming to improve the problem that the lack of installation positioning structure in some existing LED backlight doubling plates affects installation efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The microstructure optimization of the LED backlight light-diffusing plate includes a backlight and a light-diffusing plate. The backlight has an internal sliding connection with an installation mechanism, and the light-diffusing plate has an internal light-diffusing mechanism.

[0008] The installation mechanism includes two guide rods. The backlight has cavities on both the left and right sides. The front and rear sides of the guide rods are fixedly connected to the inner walls of the front and rear sides of the cavities. A return spring is sleeved on the outside of the guide rods. A connecting block is slidably connected to the outer wall of the guide rods. A locking block is fixedly connected to the adjacent side of the two connecting blocks. Positioning rods are fixedly connected to the bottom left and right sides of the light-diffusing plate.

[0009] As a further description of the above technical solution:

[0010] The light homogenizing mechanism includes an incident light layer, the top of which is fixedly connected to the bottom of the light homogenizing plate, a prism array fixedly connected to the bottom of the incident light layer, a transition layer fixedly connected between the light homogenizing plate and the incident light layer, and a composite lens fixedly connected to the top of the light homogenizing plate.

[0011] As a further description of the above technical solution:

[0012] The front side of the light-diffusing plate is slidably connected to the front inner wall of the backlight, the rear side of the reset spring is fixedly connected to the rear inner wall of the chamber, and the front side of the reset spring is fixedly connected to the rear side of the connecting block.

[0013] As a further description of the above technical solution:

[0014] The backlight has positioning grooves on both the left and right sides inside, and the bottom of the positioning rod is slidably connected to the inner wall of the positioning groove.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the connecting block is slidably connected to the inner wall of the chamber, the outer wall of the locking block is slidably connected to the inner wall of the chamber, and the inner walls of the two locking blocks are in contact with the outer wall of the light-diffusing plate.

[0017] As a further description of the above technical solution:

[0018] The light-diffusing plate is made of PMMA material, the transition layer is a UV-curable adhesive layer doped with titanium dioxide scattering particles, and the composite lens is made of PETG material formed by nanoimprinting.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this utility model, during the installation process, the positioning rod at the bottom of the light-diffusing plate is first used to cooperate with the positioning groove inside the backlight to achieve initial positioning. Then, the installation of the light-diffusing plate is controlled by the movement of the locking block. This design enables the light-diffusing plate to be installed accurately and quickly into the backlight, and the return spring can ensure that the locking block automatically resets to limit the position of the light-diffusing plate, which greatly improves the assembly efficiency.

[0021] 2. In this utility model, the prism array in the light-diffusing mechanism adopts prism units with a gradually varying density (sparse in the center and dense at the edges), which can achieve a balanced distribution of lateral light flux, initially disperse and homogenize the light emitted by the LED backlight, effectively improving the initial distribution state of the light. The incident light layer, as the first processing layer after the light enters the light-diffusing plate, receives the light that has been initially processed by the prism array. Then the light passes through the transition layer, where titanium dioxide scattering particles help to further scatter the light and enhance the light transmission effect. Finally, the light is further homogenized and enhanced by the composite lens. Its special PETG material and structure improve the light quality and uniformity, ultimately forming a backlight effect with high brightness and high uniformity. Attached Figure Description

[0022] Figure 1 is a three-dimensional view of the optimized microstructure of the LED backlight homogenizing plate proposed in this utility model;

[0023] Figure 2 is a schematic diagram of the backlight structure of the LED backlight homogenizing plate microstructure optimization proposed in this utility model.

[0024] Figure 3 is an enlarged view of point A in Figure 2;

[0025] Figure 4 is an enlarged view of point B in Figure 2;

[0026] Figure 5 is a schematic diagram of the optimized microstructure of the LED backlight homogenizing plate proposed in this utility model.

[0027] Legend:

[0028] 1. Backlight; 2. Beam homogenizer; 3. Chamber; 4. Guide rod; 5. Reset spring; 6. Connecting block; 7. Locking block; 8. Positioning rod; 9. Light incident layer; 10. Prism array; 11. Transition layer; 12. Compound lens. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Referring to Figures 1, 2 and 3, the present invention provides an embodiment of an optimized microstructure of an LED backlight light-diffusing plate, comprising a backlight 1 and a light-diffusing plate 2. The front side of the light-diffusing plate 2 is slidably connected to the front inner wall of the backlight 1. The backlight 1 serves as the main body of the entire device, providing a light source and mounting base for the light-diffusing plate 2. An mounting mechanism is slidably connected inside the backlight 1, and a light-diffusing mechanism is provided inside the light-diffusing plate 2.

[0031] The mounting mechanism includes two guide rods 4. A cavity 3 is formed on both the left and right sides of the backlight 1. The front and rear sides of the guide rods 4 are fixedly connected to the inner walls of the front and rear sides of the cavity 3. A return spring 5 is sleeved on the outside of the guide rods 4. The cavity 3 is used to install the guide rods 4, return spring 5, and other components. A connecting block 6 is slidably connected to the outer wall of the guide rods 4. The rear side of the return spring 5 is fixedly connected to the inner wall of the rear side of the cavity 3, and the front side of the return spring 5 is fixedly connected to the rear side of the connecting block 6. The outer wall of the connecting block 6 is slidably connected to the inner wall of the cavity 3. A locking block 7 is fixedly connected to the adjacent side of the two connecting blocks 6. The outer wall is slidably connected to the inner wall of the chamber 3. The guide rod 4 provides a stable guide for the sliding of the connecting block 6 and the locking block 7. The inner walls of the two locking blocks 7 are in contact with the outer wall of the light-diffusing plate 2. The function of the reset spring 5 is to provide elastic force when the locking block 7 moves backward, so that the locking block 7 can automatically reset and limit the light-diffusing plate 2. The bottom left and right sides of the light-diffusing plate 2 are fixedly connected with positioning rods 8. The backlight 1 has positioning grooves on the left and right sides inside. The bottom of the positioning rod 8 is slidably connected to the inner wall of the positioning groove. The positioning rod 8 matches the positioning groove inside the backlight 1, realizing the initial limitation of the light-diffusing plate 2.

[0032] Referring to Figures 1, 4, and 5, the light homogenizing mechanism includes an incident light layer 9. The top of the incident light layer 9 is fixedly connected to the bottom of the light homogenizing plate 2, which is made of PMMA material. A prism array 10 is fixedly connected to the bottom of the incident light layer 9. The incident light layer 9 is the first processing layer after the light enters the light homogenizing plate 2, serving to receive the initially dispersed and homogenized light from the prism array 10, providing a basis for further processing of the light. It is the entry layer for light transmission within the light homogenizing plate 2. The prism array 10 consists of prism units arranged with a gradually varying density (sparse in the center and dense at the edges) to achieve a balanced distribution of lateral light flux. The light homogenizing plate 2 and the incident light layer 9 are fixedly connected. A transition layer 11 is attached, which is a UV-curable adhesive layer doped with titanium dioxide scattering particles. The function of the transition layer 11 is to further enhance the light transmission effect during the transmission of light from the incident light layer 9 to the light homogenizing plate 2. The titanium dioxide scattering particles help to scatter the light, making the light distribution more uniform. A composite lens 12 is fixedly connected to the top of the light homogenizing plate 2. The material of 12 is PETG material formed by nano-imprinting. The composite lens 12 further homogenizes and enhances the light after the previous treatment, and finally forms a backlight effect with high brightness and high uniformity. Its special material and structure help to improve the quality and uniformity of the light.

[0033] Working principle: First, the front side of the light-diffusing plate 2 is snapped onto the inner wall of the front side of the backlight 1. The positioning rod 8 is used to initially limit the position of the light-diffusing plate 2. Then, the locking block 7 is pushed backward, which drives the connecting block 6 to move backward. At this time, the light-diffusing plate 2 is no longer blocked by the locking block 7 and can be installed in the backlight 1. Then, the locking block 7 is released. As the locking block 7 moves backward, it will drive the connecting block 6 to compress the reset spring 5. The pressure generated by the compression of the reset spring 5 drives the locking block 7 to reset and limit the position of the light-diffusing plate 2, thus completing the installation of the light-diffusing plate 2.

[0034] During use, the light emitted by the LED backlight first passes through the prism array 10, which initially disperses and homogenizes the light before it enters the light-incident layer 9. Then, the light passes through the transition layer 11, which further enhances the light transmission effect. Finally, the light is further homogenized and enhanced by the composite lens 12, forming a backlight effect with high brightness and high uniformity.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present 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 the present utility model should be included within the protection scope of the present utility model.

Claims

1. Optimized microstructure of LED backlight doubling plate, comprising a backlight (1) and a doubling plate (2), characterized in that: The backlight (1) is internally slidably connected to an installation mechanism, and the light-diffusing plate (2) is internally provided with a light-diffusing mechanism; the installation mechanism includes two guide rods (4), and the backlight (1) is internally provided with cavities (3) on both the left and right sides. The front and rear sides of the guide rods (4) are fixedly connected to the front and rear inner walls of the cavities (3). The guide rods (4) are externally sleeved with a reset spring (5). The outer wall of the guide rods (4) is slidably connected with a connecting block (6). The two connecting blocks (6) are fixedly connected to a locking block (7) on the adjacent side. The bottom left and right sides of the light-diffusing plate (2) are fixedly connected with positioning rods (8).

2. The optimized microstructure of the LED backlight homogenizing plate according to claim 1, characterized in that: The light-diffusing mechanism includes an incident light layer (9), the top of which is fixedly connected to the bottom of the light-diffusing plate (2), a prism array (10) is fixedly connected to the bottom of the incident light layer (9), a transition layer (11) is fixedly connected between the light-diffusing plate (2) and the incident light layer (9), and a composite lens (12) is fixedly connected to the top of the light-diffusing plate (2).

3. The optimized microstructure of the LED backlight homogenizing plate according to claim 1, characterized in that: The front side of the light-diffusing plate (2) is slidably connected to the front inner wall of the backlight (1), the rear side of the reset spring (5) is fixedly connected to the rear inner wall of the chamber (3), and the front side of the reset spring (5) is fixedly connected to the rear side of the connecting block (6).

4. The optimized microstructure of the LED backlight homogenizing plate according to claim 1, characterized in that: The backlight (1) has positioning grooves on both the left and right sides inside, and the bottom of the positioning rod (8) is slidably connected to the inner wall of the positioning groove.

5. The optimized microstructure of the LED backlight homogenizing plate according to claim 1, characterized in that: The outer wall of the connecting block (6) is slidably connected to the inner wall of the chamber (3), the outer wall of the locking block (7) is slidably connected to the inner wall of the chamber (3), and the inner walls of the two locking blocks (7) are in contact with the outer wall of the light-diffusing plate (2).

6. The optimized microstructure of the LED backlight homogenizing plate according to claim 1, characterized in that: The light-diffusing plate (2) is made of PMMA material, the transition layer (11) is a UV-curable adhesive layer doped with titanium dioxide scattering particles, and the composite lens (12) is made of PETG material formed by nanoimprinting.

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