Composite light guide plate combined with diffusion film

Abstract

The invention relates to the field of light guide plates, and discloses a composite light guide plate combined with a diffusion film. In the invention, the whole composite light guide plate is formed by combining the light guide plate layer and the diffusion layer. By the adoption of the technical scheme, the optical function of the diffusion sheet is integrated on the light guide plate, the optical utilization rate is improved, membrane materials are reduced, and therefore the overall cost of the backlight source is reduced. The number of components is reduced, the assembly complexity is reduced, and the assembly efficiency is improved. The design of low cost and overall thickness reduction can be achieved for backlight sources of different models and specifications. According to the composite light guide plate combining the light guide plate and the diffusion sheet, the composite light guide plate has the functions of the light guide plate and the diffusion sheet at the same time, the efficiency that light emitted by an LED enters the light guide plate and is transmitted forwards is improved to the maximum degree, and light loss is reduced.

Description

Technical Field

[0001] This invention belongs to the field of light guide plate technology, specifically a composite light guide plate combined with a diffusion film. Background Technology

[0002] In recent years, with the continuous development of displays, the demand for low cost has become increasingly prominent, which has also placed new demands on the cost of backlights. However, the fact that the diffuser film inside the backlight cannot be eliminated for the time being limits some of the costs, thus restricting further reductions in backlight costs.

[0003] However, common light guide plates need to be used in conjunction with diffusion films, which involves a large number of components and high assembly complexity, resulting in low assembly efficiency and high production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a composite light guide plate combined with a diffusion film in order to solve the problems mentioned above.

[0005] The technical solution adopted in this invention is as follows: a composite light guide plate combined with a diffusion film, comprising a composite light guide plate as a whole of the device body, wherein the composite light guide plate as a whole is composed of a light guide plate layer and a diffusion layer combined together.

[0006] By adopting the above technical solution, the optical function of the diffuser is integrated into the light guide plate, improving optical utilization and reducing film material, thereby reducing the overall cost of the backlight. This reduces the number of components, lowers assembly complexity, and improves assembly efficiency. Low-cost and thinner overall designs can be achieved for different models and specifications of backlights. The composite light guide plate, combining the light guide plate and diffuser, simultaneously functions as both, maximizing the efficiency of light emitted from the LED entering the light guide plate and propagating forward, while minimizing light loss.

[0007] In a preferred embodiment, a light-refractive protrusion is fixedly connected below the light guide plate layer.

[0008] By adopting the above technical solution, light can be refracted, thereby improving the utilization rate of light.

[0009] In a preferred embodiment, the diffusion layer is formed by adding a light diffusing agent to a light guide plate layer.

[0010] By adopting the above technical solution, the composite light guide plate can simultaneously guide the uniform distribution of light and diffuse the uniform distribution of light.

[0011] In a preferred embodiment, LED light sources are fixedly connected to both sides of the composite light guide plate.

[0012] By adopting the above technical solution, light can be generated to provide light for the entire composite light guide plate.

[0013] In a preferred embodiment, the light emitted by the LED light source passes through and enters the composite light guide plate as a whole.

[0014] By adopting the above technical solutions, the utilization rate of light can be improved.

[0015] In a preferred embodiment, the overall size, length, and structure of the composite light guide plate are not fixed.

[0016] By adopting the above technical solutions, low-cost and overall thickness reduction designs can be achieved for backlights of different models and specifications.

[0017] In a preferred embodiment, the composite light guide plate is designed for a low-cost backlight.

[0018] By adopting the above technical solutions, the overall cost of the backlight can be reduced, the number of components can be reduced, the assembly complexity can be reduced, and the assembly efficiency can be improved.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0020] In this invention, the optical function of the diffuser is integrated into the light guide plate during equipment operation, improving optical utilization and reducing film material usage, thereby lowering the overall cost of the backlight. This reduces the number of components, simplifies assembly, and improves assembly efficiency. Low-cost and thinner overall designs can be achieved for different models and specifications of backlights. The composite light guide plate, combining the light guide plate and diffuser, simultaneously functions as both, maximizing the efficiency of light emitted from the LED entering the light guide plate and propagating forward, while minimizing light loss. Attached Figure Description

[0021] Figure 1 This is an optical circuit diagram of the composite light guide plate of the present invention;

[0022] Figure 2 This is a schematic diagram of the composite light guide plate structure in this invention.

[0023] The markings in the diagram are: 1. Composite light guide plate as a whole; 2. Light guide plate layer; 3. Diffusion layer; 4. Refractive protrusion; 5. LED light source; 6. Light diffusing agent; 7. Light beam. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Example:

[0026] Reference Figure 1-2 A composite light guide plate combined with a diffusion film includes a composite light guide plate integral 1 of the main body of the device, wherein the composite light guide plate integral 1 is composed of a light guide plate layer 2 and a diffusion layer 3.

[0027] Reference Figure 1-2 By integrating the optical function of the diffuser sheet into the light guide plate, optical utilization is improved and film material is reduced, thereby lowering the overall cost of the backlight. This reduces the number of components, simplifies assembly, and improves assembly efficiency. Low-cost and thinner overall designs can be achieved for different models and specifications of backlights. The composite light guide plate, combining the light guide plate and diffuser sheet, functions as both, maximizing the efficiency of light emitted from the LED entering the light guide plate and propagating forward, while minimizing light loss.

[0028] Reference Figure 1-2 A light-refractive protrusion 4 is fixedly connected to the lower part of the light guide plate layer 2. It can refract light rays 7 and improve the utilization rate of light.

[0029] Reference Figure 1-2 The diffusion layer 3 is formed by adding light diffusing agent 6 to the light guide plate layer. This enables the composite light guide plate 1 to simultaneously guide the uniform distribution of light and diffuse the uniform distribution of light.

[0030] Reference Figure 1 LED light sources 5 are fixedly connected to both sides of the composite light guide plate 1. These sources can emit light 7, providing light to the composite light guide plate 1.

[0031] Reference Figure 1 The light emitted by LED light source 5 passes through 8 and enters the composite light guide plate 1. This can improve the utilization rate of light 7.

[0032] Reference Figure 1-2 The overall size, length, and structure of the composite light guide plate are not fixed. It allows for low-cost designs and reduced overall thickness to be achieved for different models and specifications of backlights.

[0033] Reference Figure 1-2The composite light guide plate (1) is designed for low-cost backlights. It can reduce the overall cost of the backlight, decrease the number of components, reduce assembly complexity, and improve assembly efficiency.

[0034] The implementation principle of a composite light guide plate embodiment of the present invention combined with a diffusion film is as follows:

[0035] In equipment operation, integrating the optical function of the diffuser sheet into the light guide plate improves optical utilization and reduces film material usage, thereby lowering the overall cost of the backlight. It also reduces the number of components, simplifies assembly, and improves assembly efficiency. Low-cost and thinner overall designs can be achieved for different models and specifications of backlights. Composite light guide plates, combining light guide plates and diffusers, simultaneously function as both, maximizing the efficiency of light emitted from LEDs entering the light guide plate and propagating forward, while minimizing light loss.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A composite light guide plate combined with a diffusion film, comprising a composite light guide plate integral (1) of the main body of the device, characterized in that: The composite light guide plate (1) is composed of a light guide plate layer (2) and a diffusion layer (3).

2. The composite light guide plate combined with a diffusion film as described in claim 1, characterized in that: A light-reflecting protrusion (4) is fixedly connected to the bottom of the light guide plate layer (2).

3. The composite light guide plate combined with a diffusion film as described in claim 1, characterized in that: The diffusion layer (3) is formed by adding a light diffusing agent (6) to the light guide plate layer.

4. The composite light guide plate combined with a diffusion film as described in claim 1, characterized in that: LED light sources (5) are fixedly connected to both sides of the composite light guide plate (1).

5. A composite light guide plate combined with a diffusion film as described in claim 4, characterized in that: The light emitted by the LED light source (5) (7) passes through (8) and enters the composite light guide plate (1).

6. A composite light guide plate combined with a diffusion film as described in claim 1, characterized in that: The size, length and structure of the composite light guide plate as a whole (1) are not fixed.

7. A composite light guide plate combined with a diffusion film as described in claim 1, characterized in that: The composite light guide plate as a whole (1) is designed for low-cost backlights.

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