Large-visual-angle high-permeability film layer structure applied to electronic paper

Abstract

The utility model discloses a large-visual-angle high-permeability film layer structure applied to electronic paper. The large-visual-angle high-permeability film layer structure comprises an electronic paper module, the high-permeability film layer structure is arranged on the outer side of the electronic paper module; the optical adhesive layer is arranged between the electronic paper module and the high-transmittance film layer structure; after light is reflected out of the optical adhesive layer through the electronic paper module, the light passes through the inner surface of the high-transmittance film layer structure, and the angle of the light reflected out of the electronic paper module is increased. According to the utility model, the film layer with the structure is attached to the upper surface of the front light guide plate, so that the visual angle during use is increased, and the viewing angle is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic paper display, and particularly relates to a high-transparency film layer structure with a large viewing angle applied to electronic paper. Background Art

[0002] The traditional front light module architecture includes an LED light source, a front light guide plate, and an electronic paper module. This light guide plate has a unique design. One side is densely covered with light guide dots to guide light, and the other side is a smooth surface that closely adheres to the surface of the electronic paper. After the light is emitted from the LED light source and enters the light guide plate, it is guided to the electronic paper through the internal refraction mechanism of the light guide plate, and then reflected by the electronic paper to form a visible image for users to view.

[0003] However, the disadvantage of the existing technology is that the viewing angle of the image is limited by the light emission angle, which is jointly determined by the specific material properties of the electronic paper and the light guide plate. Unfortunately, the combination method of the traditional light guide plate and the electronic paper module has limitations in widening the viewing angle, thereby affecting the overall user experience. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the existing technology. To achieve the above purpose, a high-transparency film layer structure with a large viewing angle applied to electronic paper is adopted to solve the problems put forward in the above background art.

[0005] A high-transparency film layer structure with a large viewing angle applied to electronic paper includes:

[0006] An electronic paper module;

[0007] A high-transparency film layer structure arranged outside the electronic paper module; and

[0008] An optical adhesive layer arranged between the electronic paper module and the high-transparency film layer structure;

[0009] When the light is reflected by the electronic paper module and exits the optical adhesive layer, it then passes through the inner surface of the high-transparency film layer structure, increasing the angle of the light reflected by the electronic paper module.

[0010] As a further technical solution of the utility model: A light guide plate is arranged between the optical adhesive layers. The introduction of the light guide plate effectively disperses and homogenizes the light of the LED light source, reduces light loss, and improves the overall light efficiency. At the same time, its structural design enables the light to be guided to the electronic paper module more efficiently, enhancing the brightness and uniformity of the image.

[0011] As a further technical solution of the utility model: An LED light source is arranged on the side of the light guide plate. The layout of the side LED light source not only saves space but also enables the light to enter the light guide plate more evenly, reduces the phenomena of light spots and shadows, and improves the overall quality of the image.

[0012] As a further technical solution of the present utility model: the optical adhesive layer includes a first optical adhesive layer disposed between the electronic paper module and the light guide plate, and a second optical adhesive layer disposed between the light guide plate and the high-transparency film layer structure. The application of the optical adhesive layer ensures the close fitting between the light guide plate, the electronic paper module and the high-transparency film layer structure, avoids the reflection and scattering of light at the interfaces, and further improves the utilization efficiency of light. At the same time, it also enhances the stability and durability of the entire structure.

[0013] As a further technical solution of the present utility model: the high-transparency film layer structure is a structural surface of a three-dimensional pyramid, and is made of one of high-transparency PC film, PMMA film, MS film, or PET film. The selection of the high-transparency material ensures that the high-transparency film layer structure has good light transmittance and weather resistance. At the same time, the design of the three-dimensional pyramid structural surface effectively improves the light scattering effect, making the picture softer and more natural.

[0014] As a further technical solution of the present utility model: the depth of the structural surface of the three-dimensional pyramid is 20um - 30um. The selection of the depth is carefully calculated. It can ensure the light scattering effect while avoiding the blurring of the picture caused by excessive scattering, and ensures the clarity and contrast of the picture.

[0015] As a further technical solution of the present utility model: the included angle between the structural surface of the three-dimensional pyramid and the light guide plate ranges from 10 degrees to 15 degrees. The design of the specific included angle range optimizes the light exit angle, enables the light to be more evenly distributed in the entire viewing area, further broadens the viewing angle, and improves the viewing comfort of users.

[0016] As a further technical solution of the present utility model: the high-transparency film layer structure is a structural surface of a three-dimensional pyramid, and is made of one of high-transparency PC film, PMMA film, MS film, or PET film.

[0017] As a further technical solution of the present utility model: the depth of the structural surface of the three-dimensional pyramid is 20um - 30um.

[0018] As a further technical solution of the present utility model: the included angle between the structural surface of the three-dimensional pyramid and the electronic paper module ranges from 10 degrees to 15 degrees.

[0019] Compared with the prior art, the present utility model has the following technical effects:

[0020] By adopting the above technical solution, based on the light guide plate and the electronic paper module, a surface microstructure is set therein, and thus by processing a special structure on the lower surface of the light guide plate, the refraction angle and the light exit angle of light are increased, thereby enhancing the viewing angle for use and viewing, and providing a better use and viewing experience for customers. Description of the Drawings

[0021] The following will describe in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings:

[0022] Figure 1 It is a schematic structural diagram of the high-transparency film layer structure of the disclosed embodiment of the present application;

[0023] Figure 2 It is a schematic diagram of the bonding structure of the existing electronic paper product of the disclosed embodiment of the present application;

[0024] Figure 3 It is a schematic diagram of the light reflection of the existing electronic paper product of the disclosed embodiment of the present application;

[0025] Figure 4 It is a schematic diagram of the simulated light after the reflection of the electronic paper module of the disclosed embodiment of the present application is increased;

[0026] Figure 5 It is a schematic structural diagram of the high-transparency film layer structure with a light guide plate and an LED light source of the disclosed embodiment of the present application;

[0027] Figure 6 It is a schematic diagram of the light reflection of the high-transparency film layer structure of the disclosed embodiment of the present application;

[0028] Figure 7 It is a schematic diagram of the included angle between the high-transparency film layer structure and the light guide plate of the disclosed embodiment of the present application;

[0029] Figure 8 It is a schematic side view of the high-transparency film layer structure of the disclosed embodiment of the present application;

[0030] Figure 9 It is a schematic diagram of the inner side surface of the high-transparency film layer structure of the disclosed embodiment of the present application.

[0031] In the figure: 1. Electronic paper module; 2. High-transparency film layer structure; 3. Optical adhesive layer; 31. First optical adhesive layer; 32. Second optical adhesive layer; 4. Light guide plate; 5. LED light source. Specific Embodiments

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] Please refer to Figure 1, in the embodiment of the present utility model, a high-transparency film layer structure with a large viewing angle applied to an electronic paper includes an electronic paper module 1, a high-transparency film layer structure 2, and an optical adhesive layer 3;

[0034] The electronic paper module 1;

[0035] The high-transparency film layer structure 2 disposed outside the electronic paper module 1; and

[0036] The optical adhesive layer 3 disposed between the electronic paper module 1 and the high-transparency film layer structure 2;

[0037] When light is reflected from the electronic paper module 1 through the optical adhesive layer 3 and then passes through the inner surface of the high-transparency film layer structure 2, the angle of the light reflected from the electronic paper module 1 is increased.

[0038] As Figure 2 shown, the figure shows the bonding structure of an existing traditional electronic paper product, which includes an electronic paper module, an OCA optical adhesive, a light guide plate, and an LED light source 5;

[0039] As Figure 3 shown, the figure shows that when the light of the LED light source 5 enters the light guide plate, it refracts towards the electronic paper module and then is reflected by the electronic paper, so as to realize the viewing and use by the user. However, the reflection of the electronic paper will have a certain angle, and the picture on the electronic paper product cannot be viewed at a certain angle. The viewing angle of the traditional electronic paper product is about 50 degrees.

[0040] In this embodiment, the high-transparency film layer structure 2 is a structural surface of a three-dimensional pyramid, and is made of one of a highly transparent PC film, a PMMA film, an MS film, or a PET film. The depth of the structural surface of the three-dimensional pyramid is 20um - 30um.

[0041] The design of the high-transparency film layer structure 2 lies in its unique three-dimensional pyramid-shaped structural surface. This structural design not only endows the film layer with excellent optical properties, but also significantly improves the visual effect and user experience of the entire display component.

[0042] Specifically, the high-transparency film layer uses one of a highly transparent PC film, a PMMA film, an MS film, or a PET film as the base material. These materials are all known for their excellent light transmittance, good weather resistance, and mechanical strength, which can ensure that light passes through the film layer with almost no obstruction, while protecting the internal components from the external environment.

[0043] The depth range has been carefully calculated and optimized to achieve the best optical effect. An overly shallow structure may not be able to scatter light sufficiently, while an overly deep structure may cause excessive light dispersion, affecting the picture clarity.

[0044] In this embodiment, the included angle range between the structural surface of the three-dimensional pyramid and the e-paper module is 10 degrees to 15 degrees. The determination of the included angle range is based on detailed optical simulations and experimental verifications, aiming to ensure that after the light exits the light guide plate and enters the high-transparency film layer, it can be scattered and refracted at the best angle, thereby broadening the viewing angle and reducing glare and reflection phenomena. When users view from different angles, they can enjoy a clear, uniform and colorful picture effect.

[0045] Embodiment 2:

[0046] As Figure 4 shown, the figure shows a schematic diagram of the simulated light rays after being reflected by the e-paper module 1;

[0047] In this embodiment, as Figure 5 shown, the figure shows a schematic diagram of having a light guide plate 4 and an LED light source 5; A light guide plate 4 is provided between the optical adhesive layers 3, and an LED light source 5 is provided on the side of the light guide plate 4.

[0048] In this embodiment, the optical adhesive layer 3 includes a first optical adhesive layer 31 provided between the e-paper module 1 and the light guide plate 4, and a second optical adhesive layer 32 provided between the light guide plate 4 and the high-transparency film layer structure 2.

[0049] In this embodiment, the high-transparency film layer structure 2 is the structural surface of a three-dimensional pyramid, and is made of one of high-transparency PC film, PMMA film, MS film, or PET film.

[0050] As Figure 6 shown, the figure shows a schematic diagram of the light reflection of the high-transparency film layer structure 2; The film layer material with the structural surface is high-transparency PC, PMMA, MS, PET, etc. with a thickness of 0.1 - 0.4 mm. One side is a smooth surface, and the other side is a structural surface with a pyramid shape. The structural surface is adhered to the upper surface of the light guide plate 4 through 0CA optical adhesive, and is responsible for refracting the reflected light again to increase the refraction angle.

[0051] Through the structure on the lower surface of the high-transparency film material, the angle of the light rays after being reflected by the e-paper is increased, and the viewing angle for use and viewing is improved. As shown in the following table, the increased refraction angle and brightness of the structural film material are:

[0052] Structure Structure depth Structure included angle / radius Refraction angle after reflection Reflection brightness Traditional structure None None 40 degrees 100％ Add structural film material Depth 20 - 40um 10 - 15 degrees 70 - 80 degrees 100％

[0053] As Figure 7 shown, the figure shows a schematic diagram of the included angle between the high-transparency film layer structure 2 and the light guide plate 4;

[0054] In this embodiment, the depth of the structural surface of the three-dimensional pyramid is 20 um - 30 um, the included angle range between the structural surface of the three-dimensional pyramid and the e-paper module 1 is 10 degrees to 15 degrees, and the included angle range between the structural surface of the three-dimensional pyramid and the light guide plate 4 is 10 degrees to 15 degrees.

[0055] As Figure 8 shown, the figure is a side view schematic diagram of the high-transparency film layer structure 2;

[0056] As Figure 9 shown, the figure is a schematic diagram of the inner side surface of the high-transparency film layer structure 2, and the structural surface is the structural surface of a three-dimensional pyramid.

[0057] Among them, the structural surface is pyramid-shaped and evenly distributed on the material surface. By continuously simulating and testing the structures at different depths and angles, the ideal depth of the pyramid-shaped structure needs to be controlled within 20-30 um, and the included angle between the pyramid structure and the light guide plate 4 is controlled within 10-15 degrees.

[0058] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents, and all of them should be included within the protection scope of the present invention.

Claims

1. A high-transparency film layer structure with a large viewing angle for use in electronic paper, characterized in that, Comprising: An electronic paper module (1); A high-transparency film layer structure (2) disposed outside the electronic paper module; And An optical adhesive layer (3) disposed between the electronic paper module and the high-transparency film layer structure; When light is reflected out of the optical adhesive layer through the electronic paper module and then passes through the inner surface of the high-transparency film layer structure, the light angle after being reflected out of the electronic paper module is increased.

2. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 1, wherein A light guide plate (4) is disposed between the optical adhesive layers.

3. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 2, characterized in that, An LED light source (5) is disposed on the side of the light guide plate.

4. The high-transparency film layer structure with a large viewing angle applied to electronic paper according to claim 3, characterized in that, The optical adhesive layer includes a first optical adhesive layer (31) disposed between the electronic paper module and the light guide plate, and a second optical adhesive layer (32) disposed between the light guide plate and the high-transparency film layer structure.

5. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 4, characterized in that, The high-transparency film layer structure is a structural surface of a three-dimensional pyramid and is made of one of a high-transparency PC film, a PMMA film, an MS film, or a PET film.

6. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 5, characterized in that, The depth of the structural surface of the three-dimensional pyramid is 20um - 30um.

7. The high-transmission film layer structure with a large viewing angle applied to an electronic paper according to claim 6, characterized in that, The included angle range between the structural surface of the three-dimensional pyramid and the light guide plate is 10 degrees - 15 degrees.

8. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 1, wherein, The high-transparency film layer structure is a structural surface of a three-dimensional pyramid and is made of one of a high-transparency PC film, a PMMA film, an MS film, or a PET film.

9. The high-transparency film layer structure with a large viewing angle applied to electronic paper according to claim 8, wherein The depth of the structural surface of the three-dimensional pyramid is 20um - 30um.

10. The high-transparency film layer structure with a large viewing angle applied to an electronic paper according to claim 9, characterized in that, The included angle range between the structural surface of the three-dimensional pyramid and the electronic paper module is 10 degrees - 15 degrees.

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