High-color-gamut LED backlight source structure

Abstract

The utility model relates to the field of backlight sources, and discloses a high-color-gamut LED backlight source structure which comprises a main substrate, the inner surface of the main substrate is fixedly connected with a reflector plate, the outer wall of the reflector plate is fixedly connected with an LED chip, the outer wall of the LED chip is fixedly connected with a fluorescent powder layer, the outer wall of the fluorescent powder layer is fixedly connected with a diffusion plate, and the outer wall of the diffusion plate is fixedly connected with an LED light source. The outer wall of the diffusion plate is fixedly connected with a prismatic lens, the outer wall of the prismatic lens is fixedly connected with an anti-dazzle layer, the outer wall of the main substrate is provided with heat dissipation holes, the outer wall of the main substrate is fixedly connected with a fixing strip, the surface of the fixing strip is provided with a T-shaped groove, and the surface of the main substrate is provided with a heat dissipation back plate. According to the high-color-gamut LED backlight source, the T-shaped groove, the T-shaped plate, the first magnetic sheet and other structures are arranged, the air circulation area is enlarged in the limited space of the heat dissipation back plate, the heat exchange effect is improved, and therefore the use stability of the high-color-gamut LED backlight source is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of backlights, and in particular to a high color gamut LED backlight structure. Background Technology

[0002] High color gamut LED backlighting is a backlighting technology used in LCD displays. Its core objective is to enable display devices to cover a wider range of colors by optimizing the light-emitting characteristics of the light source. Color gamut refers to the range of colors that a display device can present, and it is usually measured by color gamut coverage. High color gamut LED backlighting significantly improves the color performance of display devices by improving light-emitting materials, optical design and control technology.

[0003] A search revealed Chinese Patent Publication No. CN221125046U, which discloses a high color gamut LED backlight structure. This structure comprises a transparent liquid crystal display (LCD) composed of liquid crystal glass and LED chips. The LED chips provide the display light source from the sides, a reflective layer guides the light, and the liquid crystal glass serves as the display element. A sub-substrate is linearly arranged on the main substrate, enabling high-density arrangement of the three-color LED chips. Furthermore, the three-color LED chips can be independently controlled, allowing for adjustment of the LED backlight line as needed. This results in a transparent LCD display with small size, short-distance viewing, high brightness, high color gamut, and transparent display capabilities.

[0004] In the above technical solution, a transparent liquid crystal display structure composed of liquid crystal glass and LED chips is used to achieve high-density arrangement of LED chips and adjust the LED backlight. However, when the LED backlight is in use, the high color gamut LED backlight will generate more heat at high brightness, and it cannot provide a larger heat dissipation space in a limited space. When the LED chips work at high temperature, the luminous efficiency will decrease significantly, resulting in a decrease in the brightness of the backlight and thus reducing the stability of the backlight. Therefore, a high color gamut LED backlight structure is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a high color gamut LED backlight structure, which aims to improve the problem that the existing high color gamut LED backlight structure cannot expand the heat exchange space for the backlight within a limited space, resulting in a decrease in the stability of the backlight.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high color gamut LED backlight structure, comprising a main substrate, a reflector sheet fixedly connected to the inner surface of the main substrate, an LED chip fixedly connected to the outer wall of the reflector sheet, a phosphor layer fixedly connected to the outer wall of the LED chip, a diffuser plate fixedly connected to the outer wall of the phosphor layer, a prism sheet fixedly connected to the outer wall of the diffuser plate, an anti-glare layer fixedly connected to the outer wall of the prism sheet, heat dissipation holes formed on the outer wall of the main substrate, a fixing strip fixedly connected to the outer wall of the main substrate, a T-shaped groove formed on the surface of the fixing strip, a heat dissipation backplate provided on the surface of the main substrate, T-shaped plates fixedly connected to the upper and lower ends of the heat dissipation backplate, a magnetic sheet one fixedly connected to the inner wall of the T-shaped groove, a magnetic sheet two fixedly connected to the outer wall of the T-shaped plate, a spiral heat dissipation channel formed on the surface of the heat dissipation backplate, a through groove formed through the outer wall of the heat dissipation backplate, heat dissipation fins fixedly connected to the inner wall of the through groove, and a limit component provided on the surface of the fixing strip.

[0007] As a further description of the above technical solution:

[0008] The outer wall of the T-shaped plate is adapted to the inner wall of the T-shaped groove, and the outer wall of the first magnetic sheet is magnetically connected to the outer wall of the second magnetic sheet.

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

[0010] The outer wall of the heat dissipation backplate near the spiral heat dissipation channel is attached to the outer wall of the main substrate away from the reflector.

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

[0012] The limiting component includes a limiting plate, a limiting rod is slidably connected to the inner wall of the limiting plate, a spring is fixedly connected to the outer wall of the limiting plate, and a limiting hole is formed on the outer wall of the heat dissipation back plate.

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

[0014] The limiting plate is rotatably connected to the inner wall of the fixing strip via a rotating shaft.

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

[0016] The limiting rod penetrates the limiting plate, and the outer wall of the limiting rod is adapted to the inner wall of the limiting hole.

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

[0018] The outer wall of the heat dissipation backplate has a slot, and the inner wall of the slot is magnetically connected to a fixing block by a magnet. The outer wall of the fixing block is fixedly connected to a filter element.

[0019] As a further description of the above technical solution:

[0020] The slot is opened on the outer wall of the heat dissipation back plate on the side away from the spiral heat dissipation channel, and the filter element is attached to the heat dissipation fins.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by combining the structure of T-slot, T-plate, magnetic sheet one, magnetic sheet two and fixing components, the heat dissipation backplate and the main substrate can be quickly disassembled and assembled. Through the heat dissipation fins and spiral heat dissipation channels inside the slot, the air circulation area is expanded in the limited space of the heat dissipation backplate, the heat exchange effect is improved, thereby ensuring the stability of the high color gamut LED backlight.

[0023] 2. In this utility model, by combining the slot, fixing block and filter components, a dustproof function can be provided for a large area of ​​through slot, reducing the probability of dust entering the main substrate through the through slot and contacting the LED chip, thereby ensuring the display effect of high color gamut LED backlight. Attached Figure Description

[0024] Figure 1 This is an exploded view of the main structure of a high color gamut LED backlight structure proposed in this utility model;

[0025] Figure 2 This is a schematic diagram of the back of the main structure of a high color gamut LED backlight structure proposed in this utility model;

[0026] Figure 3 This utility model proposes a high color gamut LED backlight structure. Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 This is a schematic diagram showing the separation of the main substrate and the heat dissipation backplate in a high color gamut LED backlight structure proposed in this utility model.

[0028] Figure 5 This is a side view of the separation of the fixing strip and the heat dissipation backplate in a high color gamut LED backlight structure proposed in this utility model.

[0029] Figure 6 This is a front view schematic diagram showing the separation of the fixing strip and the heat dissipation backplate in a high color gamut LED backlight structure proposed in this utility model.

[0030] Legend:

[0031] 1. Main substrate; 2. Reflector sheet; 3. LED chip; 4. Phosphor layer; 5. Diffuser plate; 6. Prism sheet; 7. Anti-glare layer; 8. Heat dissipation backplate; 9. Fixing strip; 10. T-slot; 11. T-plate; 12. Magnetic sheet one; 13. Magnetic sheet two; 14. Spiral heat dissipation channel; 15. Through slot; 16. Heat dissipation fins; 17. Limiting plate; 18. Limiting rod; 19. Spring; 20. Limiting hole; 21. Heat dissipation hole; 22. Slot; 24. Fixing block; 25. Filter element. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-3This utility model provides an embodiment of a high color gamut LED backlight structure, including a main substrate 1. A reflective sheet 2 is fixedly connected to the inner surface of the main substrate 1. The highly reflective material of the reflective sheet 2 reflects scattered light back into the backlight, reducing light loss and improving light utilization. An LED chip 3 is fixedly connected to the outer wall of the reflective sheet 2. The LED chip 3 converts electrical energy into light energy through the principle of electroluminescence, emitting light of a specific wavelength. A phosphor layer 4 is fixedly connected to the outer wall of the LED chip 3. The phosphor layer 4 converts blue light into light of other wavelengths through the properties of the phosphor material. A diffuser plate 5 is fixedly connected. Through the microstructure design of the diffuser plate 5, light is evenly distributed, reducing light spots and dark areas, and improving light uniformity. A prism sheet 6 is fixedly connected to the outer wall of the diffuser plate 5. Through the microprism structure of the prism sheet 6, light is concentrated in a specific direction, improving the brightness and contrast of the display. An anti-glare layer 7 is fixedly connected to the outer wall of the prism sheet 6. The anti-glare layer 7 reduces direct reflection from the screen surface by scattering reflected light, which helps improve the readability of the screen in bright environments. The outer wall of the main substrate 1 has heat dissipation holes 21. A fixing strip 9 is fixedly connected to the outer wall of the main substrate 1. The surface of the fixing strip 9 has T-shaped openings. The end of the T-shaped groove 10 and the fixing strip 9 are closed to prevent the T-shaped plate 11 from protruding from the fixing strip 9. A heat dissipation backplate 8 is provided on the surface of the main base plate 1. T-shaped plates 11 are fixedly connected to the upper and lower ends of the heat dissipation backplate 8. The outer wall of the T-shaped plate 11 is adapted to the inner wall of the T-shaped groove 10. A magnetic sheet 12 is fixedly connected to the inner wall of the T-shaped groove 10. A magnetic sheet 13 is fixedly connected to the outer wall of the T-shaped plate 11. The outer walls of the magnetic sheet 12 and the outer walls of the magnetic sheet 13 are magnetically connected. A spiral heat dissipation channel 14 is opened on the surface of the heat dissipation backplate 8. The spiral heat dissipation channel 14 has downward inclined openings on both sides. The openings are connected to the spiral heat dissipation channel. The spiral heat dissipation channel 14 is connected, allowing external air to enter the interior of the spiral heat dissipation channel 14. The downward tilt reduces the chance of dust entering the spiral heat dissipation channel 14 through the opening. The spiral heat dissipation channel 14 provides a larger heat dissipation area in the limited space of the heat dissipation backplate 8. The outer wall of magnetic sheet 12 is magnetically connected to the outer wall of magnetic sheet 13. A through groove 15 is opened through the outer wall of the heat dissipation backplate 8. Heat dissipation fins 16 are fixedly connected to the inner wall of the through groove 15. The heat dissipation fins 16 can provide heat exchange function to the main substrate 1. Through the good thermal conductivity of the main substrate 1, the heat generated by the LED chip 3 is conducted to the heat dissipation backplate 8.

[0034] Reference Figures 3-5The surface of the fixing strip 9 is provided with a limiting component, which includes a limiting plate 17. A T-slot 10 is sleeved on the outer wall of the limiting plate 17. The limiting plate 17 can be placed inside the T-slot 10 and contact the heat dissipation back plate 8. The limiting plate 17 is rotatably connected to the inner wall of the fixing strip 9 through a rotating shaft. A limiting rod 18 is slidably connected to the inner wall of the limiting plate 17. The limiting rod 18 passes through the limiting plate 17. A spring 19 is fixedly connected to the outer wall of the limiting plate 17. A limiting hole 20 is opened on the outer wall of the heat dissipation back plate 8. The outer wall of the limiting rod 18 is adapted to the inner wall of the limiting hole 20.

[0035] Reference Figures 4-6 The outer wall of the heat dissipation backplate 8 has a slot 22. The slot 22 is located on the outer wall of the heat dissipation backplate 8 away from the spiral heat dissipation channel 14. The inner wall of the slot 22 is magnetically connected to a fixing block 24 by a magnet. The outer wall of the fixing block 24 is fixedly connected to a filter element 25. The filter element 25 is attached to the heat dissipation fins 16. The filter element 25 consists of a filter frame and a filter screen. The filter screen can intercept external dust from entering through the channel 15.

[0036] Working principle: The reflector 2, LED chip 3, phosphor layer 4, diffuser 5, prism sheet 6, and anti-glare layer 7 are installed in the main substrate 1 to form a high color gamut LED backlight. The LED chip 3 is connected to the control circuit. Through the driving and adjustment functions of the control circuit, the LED chip 3 is allowed to work under appropriate current and voltage. After installation, the T-shaped plate 11 is inserted into the T-shaped groove 10 until the two sets of magnetic sheets 13 and 12 are magnetic, providing initial fixation for the heat dissipation backplate 8. Then, the limiting plate 17 is moved from the outside of the T-shaped groove 10 into the inside of the T-shaped groove 10, and the limiting plate 17 and the diffuser 5 are connected. After the heat dissipation backplate 8 comes into contact, the limiting rod 18 is pulled by the spring 19 and embedded into the limiting hole 20, providing secondary fixation for the heat dissipation backplate 8. Finally, the fixing block 24 is inserted into the slot 22 and attracted by the magnet. The filter element 25 can cover the area of ​​the through slot 15, providing a certain degree of dust prevention. Finally, the high color gamut LED backlight is powered on and used. During use, the LED chip 3 generates a heat source, which is transferred to the surface of the heat dissipation backplate 8 through the main substrate 1. The heat is conducted to the surrounding environment through the spiral heat dissipation channel 14 and the heat dissipation fins 16 in the through slot 15, thereby improving the heat dissipation efficiency.

[0037] 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. A high color gamut LED backlight structure, comprising a main substrate (1), the inner surface of the main substrate (1) is fixedly connected with a reflecting sheet (2), the outer wall of the reflecting sheet (2) is fixedly connected with an LED chip (3), the outer wall of the LED chip (3) is fixedly connected with a phosphor layer (4), the outer wall of the phosphor layer (4) is fixedly connected with a diffusion plate (5), the outer wall of the diffusion plate (5) is fixedly connected with a prism sheet (6), and the outer wall of the prism sheet (6) is fixedly connected with an anti-glare layer (7), characterized in that: The outer wall of the main substrate (1) is provided with a heat dissipation hole (21), the outer wall of the main substrate (1) is fixedly connected with a fixed strip (9), the surface of the fixed strip (9) is provided with a T-shaped groove (10), the surface of the main substrate (1) is provided with a heat dissipation back plate (8), the upper and lower ends of the heat dissipation back plate (8) are fixedly connected with T-shaped plates (11) respectively, the inner wall of the T-shaped groove (10) is fixedly connected with a magnetic sheet one (12), the outer wall of the T-shaped plate (11) is fixedly connected with a magnetic sheet two (13), the surface of the heat dissipation back plate (8) is provided with a spiral heat dissipation channel (14), the outer wall of the heat dissipation back plate (8) is provided with a through groove (15) penetratingly, the inner wall of the through groove (15) is fixedly connected with a heat dissipation fin (16), and the surface of the fixed strip (9) is provided with a limiting assembly. ​ 2. The high gamut LED backlight structure of claim 1, wherein: The outer wall of the T-shaped plate (11) is matched with the inner wall of the T-shaped groove (10), and the outer wall of the magnetic sheet one (12) is magnetically connected with the outer wall of the magnetic sheet two (13).

3. The high gamut LED backlight structure of claim 1, wherein: The side outer wall of the heat dissipation back plate (8) close to the spiral heat dissipation channel (14) is attached to the side outer wall of the main substrate (1) away from the reflecting sheet (2).

4. The high gamut LED backlight structure of claim 1, wherein: The limiting assembly comprises a limiting plate (17), the inner wall of the limiting plate (17) is slidably connected with a limiting rod (18), the outer wall of the limiting plate (17) is fixedly connected with a spring (19), and the outer wall of the heat dissipation back plate (8) is provided with a limiting hole (20).

5. The high gamut LED backlight structure of claim 4, wherein: The limiting plate (17) is rotationally connected with the inner wall of the fixed strip (9) through a rotating shaft.

6. The high gamut LED backlight structure of claim 4, wherein: The limiting rod (18) penetrates through the limiting plate (17), and the outer wall of the limiting rod (18) is matched with the inner wall of the limiting hole (20).

7. The high gamut LED backlight structure of claim 1, wherein: The outer wall of the heat dissipation back plate (8) is provided with a notch (22), the inner wall of the notch (22) is magnetically connected with a fixed block (24) through a magnet, and the outer wall of the fixed block (24) is fixedly connected with a filter (25).

8. The high color gamut LED backlight structure of claim 7, wherein: The notch (22) is arranged on the side outer wall of the heat dissipation back plate (8) away from the spiral heat dissipation channel (14), and the filter (25) is attached to the heat dissipation fin (16). The outer wall of the heat dissipation back plate (8) is provided with a notch (22), the inner wall of the notch (22) is magnetically connected with a fixed block (24) through a magnet, and the outer wall of the fixed block (24) is fixedly connected with a filter (25).

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