Reflection type display front light plate structure

Abstract

A reflective display front light plate structure comprises a front light plate base film and a second refraction layer. The front light plate base film comprises a light guide layer and a first refraction layer on the light guide layer, the refractive index of the light guide layer is larger than that of the first refraction layer, and a plurality of lattice points are formed on the first refraction layer. The second refraction layer is arranged on the front light plate base film, and the refractive index of the second refraction layer is smaller than that of the first refraction layer. The front light plate structure of the reflective display can improve the display brightness and improve the utilization efficiency of light rays.

Description

Technical Field

[0001] The utility model relates to the technical field of optical films, and particularly relates to a front light plate structure of a reflective display. Background Art

[0002] The display panel of a reflective display uses ambient light as a light source, reflects the ambient light irradiated onto the display panel, and thus achieves the purpose of display. This display method is similar to reading under natural light, is more friendly to the eyes, and reduces the harm of harmful light such as blue light. However, in the prior art, a reflective display only uses a single reflective layer for reflection and then forms an image through modulation. When the light in the use environment is insufficient, its display quality will be greatly affected. Therefore, a front light plate structure of a reflective display that can improve brightness is needed. Summary of the Utility Model

[0003] Aiming at the above defects, the utility model provides a front light plate structure of a reflective display, which can improve the display brightness and the light utilization efficiency.

[0004] In order to achieve the purpose of the utility model, the following technologies are proposed:

[0005] A front light plate structure of a reflective display, comprising:

[0006] A front light plate base film, including a light guide layer and a first refractive layer on the light guide layer. The refractive index of the light guide layer is greater than that of the first refractive layer, and a plurality of dots are formed on the first refractive layer;

[0007] A second refractive layer, disposed on the front light plate base film, and the refractive index of the second refractive layer is less than that of the first refractive layer.

[0008] Further, the light guide layer and the first refractive layer of the front light plate base film are co-extruded and formed.

[0009] Further, the light guide layer is made of polycarbonate.

[0010] Further, the first refractive layer is made of polymethyl methacrylate.

[0011] Further, the second refractive layer is disposed on the first refractive layer.

[0012] Further, the second refractive layer is coated by ultraviolet coating or thermal curing coating.

[0013] Further, the second refractive layer is made of silicone gel optical glue.

[0014] The beneficial effects of this technical solution are as follows:

[0015] 1. After the ambient light source enters the front light plate from the side, it forms a convergence of light on the bottom surface through two transparent materials with different refractive indices. Through the dot microstructure formed by the first refractive layer, the light is reflected and refracted multiple times between the dots, thereby increasing the propagation path length of the light between the light guide layer and the first refractive layer. This increased propagation path length helps the light to be more evenly distributed on the entire front light plate base film, improving the light utilization efficiency and forming a high-brightness and uniform light output.

[0016] 2. On the basis of the front light plate base film, a second refractive layer is provided, such that the refractive indices of the light guide layer, the first refractive layer, and the second refractive layer decrease in sequence. The light will refract and gradually deviate towards the normal direction of the display. This refraction effect helps to converge the originally scattered light and enhance the brightness of the front of the display. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It shows an overall sectional view of an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the objectives, technical solutions, and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0019] As Figure 1 shown, a reflective display front light plate structure includes a front light plate base film and a second refractive layer 3.

[0020] The front light plate base film includes a co-extruded light guide layer 1 and a first refractive layer 2 on the light guide layer 1. The refractive index of the light guide layer 1 is greater than that of the first refractive layer 2. The first refractive layer 2 is formed with a plurality of dots 21 by hot pressing. Specifically, the light guide layer 1 is made of polycarbonate with a refractive index of 1.586, and the first refractive layer 2 is made of polymethyl methacrylate with a refractive index of 1.49.

[0021] The second refractive layer 3 is disposed on the front light plate base film. Specifically, it is disposed on the first refractive layer 2 and is formed by ultraviolet coating or thermal curing coating. The refractive index of the second refractive layer 3 is less than that of the first refractive layer 2. Specifically, the second refractive layer 3 is made of silicone gel optical glue with a refractive index of 1.41.

[0022] The above are only some embodiments listed in the present application and are not used to limit the present application.

Claims

1. A reflective display front light plate structure, characterized in that: include: A front light plate base film, comprising a light guide layer (1) and a first refractive layer (2) on the light guide layer (1), the refractive index of the light guide layer (1) being greater than the refractive index of the first refractive layer (2), and the first refractive layer (2) being formed with a plurality of mesh points (21); The second refractive layer (3) is arranged on the front light plate base film, and the refractive index of the second refractive layer (3) is smaller than the refractive index of the first refractive layer (2).

2. The reflective display front light plate structure according to claim 1, characterized in that: The light guide layer (1) and the first refractive layer (2) of the front light plate base film are co-extruded.

3. The reflective display front light plate structure according to claim 1, characterized in that: The light guide layer (1) is made of polycarbonate.

4. The reflective display front light plate structure according to claim 1, characterized in that: The first refractive layer (2) is made of polymethyl methacrylate.

5. The reflective display front light plate structure according to claim 1, characterized in that: The second refractive layer (3) is arranged on the first refractive layer (2).

6. The reflective display front light plate structure according to claim 1, characterized in that: The second refractive layer (3) is coated by ultraviolet coating or thermal curing.

7. The reflective display front light plate structure according to claim 1, characterized in that: The second refractive layer (3) is made of organic silicone gel optical adhesive.

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