Light guide lattice point structure for front light display module

Abstract

The utility model discloses a light guide lattice point structure for a front light display module. The light guide lattice point structure comprises a light guide plate, the electronic paper module is arranged on the inner end face of the light guide plate; the light source part is arranged on the side edge of the light guide plate; the light guide lattice points are arranged on the outer end face of the light guide plate; the light guide net points are distributed on the outer end face of the light guide plate in a gradient mode in the direction away from the light source component, and it is determined that light is evenly diffused in the light guide plate. By designing the light guide lattice point structure of the light guide plate, the problem of displaying a peripheral dark area is solved, the lattice point density of the dark area is increased according to the refraction characteristic of the light guide lattice points, more light rays are refracted to the electronic paper module and then reflected out through the surface of the electronic paper, the brightness is improved, and the problem of the peripheral dark area is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic display devices, in particular to a light guide dot structure for a front light display module. Background Technique

[0002] In the existing front light display module, in the presence of ambient light, the front light source can be not used to achieve the display image effect. However, in the absence of ambient light, the front light source needs to be used, and the front light source requires the use of a front light guide plate, which needs to be fully adhered to the electronic paper for use.

[0003] After the existing front light guide plate is fully adhered to the electronic paper, due to problems such as light leakage, dark display areas will appear around the module, and the brightness will be lower than that of the normal area, affecting the display. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art. To achieve the above purposes, a light guide dot structure for a front light display module is adopted to solve the problems raised in the above background technique.

[0005] A light guide dot structure for a front light display module includes:

[0006] A light guide plate;

[0007] An electronic paper module disposed on the inner end surface of the light guide plate;

[0008] A light source component disposed on the side of the light guide plate; and

[0009] Light guide dots disposed on the outer end surface of the light guide plate;

[0010] The light guide dots are arranged in a gradient distribution on the outer end surface of the light guide plate along the direction away from the light source component to ensure uniform diffusion of light in the light guide plate.

[0011] As a further scheme of the utility model: an OCA optical adhesive layer for fitting is disposed between the light guide plate and the electronic paper module. By disposing an OCA optical adhesive layer between the light guide plate and the electronic paper module, it can ensure the close fitting between the two, reduce the reflection and scattering of light at the interface, thereby improving the utilization rate of light and the clarity of the display, and at the same time enhancing the overall structural stability and durability of the device.

[0012] As a further scheme of the utility model: the light source component is disposed on the side of the light guide plate. By disposing the light source component on the side of the light guide plate, the uniformity of the side light source can be effectively utilized, and through the dot design inside the light guide plate, uniform distribution of light can be achieved, improving the brightness uniformity of the entire display area, and at the same time reducing the direct interference of the light source on vision and enhancing the user experience.

[0013] As a further solution of the present utility model: the thickness of the light guide plate is between 0.1 mm and 0.4 mm, and the materials used are PC, PMMA, or MS materials. Selecting these lightweight and excellent optical performance materials and combining with appropriate thickness design can reduce the weight of the device and improve portability while ensuring the light guide effect. In addition, these materials also have good processing performance and weather resistance, which helps to extend the service life of the product.

[0014] As a further solution of the present utility model: the light guide plate is provided with a light incident side and a light exit side for guiding the light of the light guide dots. Clearly distinguishing the light incident side and the light exit side and designing corresponding light guide dots can more effectively control the light propagation path, achieve precise light guidance and uniform distribution, thereby improving the clarity and brightness uniformity of the display effect.

[0015] As a further solution of the present utility model: the light guide dots are selected as concave dots or convex dots according to the actual needs of the light guide plate.

[0016] As a further solution of the present utility model: the size range of the light guide dots is that the width is between 0.01 mm and 0.05 mm, and the depth is between 5 μm and 10 μm. Fine control of the size of the light guide dots can reduce light scattering and loss while ensuring effective light diffusion, improve the light utilization rate and display effect. In addition, appropriate size design also helps to achieve a more delicate optical effect, enhancing the fineness and layering of the picture.

[0017] As a further solution of the present utility model: the density of the light guide dots on the light incident side is less than the density of the light guide dots on the light exit side. By adjusting the density of the light guide dots on the light incident side and the light exit side, the light propagation path and distribution can be further optimized, making the light gradually uniform inside the light guide plate, so as to form a more uniform and bright light illumination effect on the light exit side, improving the overall quality of the display effect.

[0018] As a further solution of the present utility model: along the direction away from the light source component, the light guide dot density is gradient-distributed and the light guide dot density gradually increases. Adopting the gradient-distributed light guide dot density design can more effectively compensate for the attenuation of light during propagation, ensuring that the light can maintain sufficient brightness and uniformity in the area far from the light source. This design not only improves the light utilization rate but also enhances the consistency and stability of the display effect.

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

[0020] With the above technical solution, after designing the light guide plate to be attached to the e-paper module, the distribution structure of the light guide dots is optimized. Thus, the problem of dark areas around the display is solved. According to the refraction characteristics of the light guide dots, the dot density in the dark area is increased, so that more light is refracted towards the e-paper module and then reflected out through the surface of the e-paper, improving the brightness and solving the problem of dark areas around the display. Description of the Drawings

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

[0022] Figure 1 Schematic diagram of the light guide dot structure of the disclosed embodiment of the present application;

[0023] Figure 2 Schematic diagram of the existing dark area phenomenon of the disclosed embodiment of the present application;

[0024] Figure 3 Schematic diagram of the light path of the light guide dot structure of the disclosed embodiment of the present application;

[0025] Figure 4 Schematic diagram of the final scheme of the light guide dot structure of the disclosed embodiment of the present application.

[0026] In the figure: 1, light guide plate; 2, e-paper module; 3, light source component; 4, light guide dots; 5, OCA optical adhesive layer; 6, dark area position. Specific Embodiments

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1 , in the embodiment of the present invention, a light guide dot structure for a front light display module includes a light guide plate 1, an e-paper module 2, a light source component 3; and light guide dots 4;

[0029] The light guide plate 1 is mainly responsible for evenly distributing the light of the LED light source component 3 to the e-paper display area of the e-paper module 2 to achieve the function of uniform display;

[0030] The e-paper module 2 disposed on the inner end surface of the light guide plate 1 has the function of displaying an image screen;

[0031] The light source component 3 disposed on the side of the light guide plate 1 is responsible for providing light to the electronic paper module 2 in the absence of ambient light, thereby achieving the display effect of the electronic paper module 2; and

[0032] The light guide dots 4 disposed on the outer end surface of the light guide plate 1 solve the problem of dark areas and low brightness around the display area after the light guide plate 1 is attached to the electronic paper, and improve the display effect through the light guide dots 4 on the front light guide plate 1;

[0033] Specifically, along the direction away from the light source component 3, the light guide dots 4 are arranged in a gradient distribution on the outer end surface of the light guide plate 1 to ensure uniform diffusion of light in the light guide plate 1.

[0034] As Figure 2 shown, the figure shows a schematic diagram of the existing dark area phenomenon; after the existing front light guide plate 1 is fully attached to the electronic paper, due to problems such as light leakage, dark areas will appear around the module, and the brightness will be lower than that of the normal area, affecting the display.

[0035] In this embodiment, to solve the problem of dark areas around the display, according to the refraction characteristics of the light guide dots 4, the dot density in the dark area is increased, so that more light is refracted towards the electronic paper module 2 and then reflected out through the surface of the electronic paper, improving the brightness and solving the problem of dark areas around.

[0036] As Figure 3 shown, the figure shows a schematic diagram of the light path of the light guide dot structure; an OCA optical adhesive layer 5 for fitting is provided between the light guide plate 1 and the electronic paper module 2, and the OCA optical adhesive layer 5 is used for the full attachment of the front light guide plate 1 and the surface of the electronic paper module 2.

[0037] In this embodiment, the light source component 3 is disposed on the side of the light guide plate 1, the thickness of the light guide plate 1 is between 0.1 mm and 0.4 mm, and the material used is PC, PMMA, or MS material.

[0038] Specifically, the light guide plate 1 is a key material for electronic display devices. It is mainly composed of materials such as PC / PMMA / MS with a thickness between 0.1 - 0.4 mm. These materials have excellent light transmittance and weather resistance, ensuring efficient and uniform light transmission. The surface of the light guide plate 1 is distributed with tiny dots, and the size of these dots is precisely set to be 0.01 - 0.05 mm, with a depth of 5 - 10 microns. Such a structural design helps to control the reflection and refraction of light, thus achieving uniform diffusion of the light source.

[0039] Meanwhile, the LED light source component 3 is placed on one side of the light guide plate 1. In order to make the light of the LED light source component 3 evenly cover the entire display surface, the design of the dot density follows a certain rule: at the position close to the LED light source component 3, the dot density is relatively low, while at the position far from the LED light source component 3, the dot density gradually increases. This gradient distribution can effectively guide the light to the entire display area, eliminate the difference between the bright area and the dark area, and improve the uniformity of the overall picture.

[0040] In this embodiment, the light guide plate 1 is provided with a light incident side and a light exit side for guiding the light of the light guide dots 4.

[0041] Specifically, due to the diverse product sizes, the density of the light incident side and the light exit side of the light guide dots 4 will be adjusted according to the actual product requirements. This flexibility enables the front light guide plate 1 to adapt to different specifications of the electronic paper module 2 and provide personalized light guide solutions.

[0042] In this embodiment, the light guide dots 4 are selected as concave dots or convex dots according to the actual needs of the light guide plate 1. The size range of the light guide dots 4 is that the width is from 0.01 mm to 0.05 mm, and the depth is from 5 μm to 10 μm.

[0043] In this embodiment, the density of the light guide dots 4 on the light incident side is less than the density of the light guide dots 4 on the light exit side.

[0044] In this embodiment, along the direction away from the light source component 3, the density of the light guide dots 4 is distributed in a gradient manner, and the density of the light guide dots 4 gradually increases.

[0045] In this embodiment, the process steps of the design method of the light guide dot structure are as follows:

[0046] 1. After the light guide plate 1 and the electronic paper module 2 are fully bonded using the OCA optical adhesive layer 5, tests and adjustments are carried out to obtain test results;

[0047] 2. Obtain the circumferential dark area position 6 generated after the full bonding of the light guide plate 1 and the electronic paper module 2, measure the brightness value L at the current position, and obtain the initial value m of the density of the light guide dots 4 at the corresponding position;

[0048] 3. According to the test results, set the brightness value L of the corresponding dark area position 6 to be improved; ′ ;

[0049] 4. According to the improvement formula of the density of the light guide dots 4, calculate the new density M of the light guide dots 4, and then adjust the density of the light guide dots 4 on the light guide plate 1 to obtain the final density distribution scheme of the light guide dots 4.

[0050] In this embodiment, the specific steps of calculating the new density M of the light guide dots 4 according to the improvement formula of the density of the light guide dots 4 in step S4 are as follows:

[0051] The improvement formula for determining the density of the light guide dots 4 is as follows:

[0052]

[0053] Where L is the brightness value at the current position, m is the initial value of the density of the light guide dots 4 at the corresponding position, and L ′ is the brightness value of the corresponding dark area position 6 to be improved.

[0054] In this embodiment, in the new dot design stage, based on the initial density, the dot density of the dark area position 6 is adjusted according to the calculated improvement density data M. Through repeated experiments and optimizations, a new dot density distribution scheme is finally obtained. Subsequently, the new dot density is converted into the actual preposed light guide plate material through the light guide plate 1 processing technology. The optimized preposed light guide plate 1 is bonded to the e-paper module 2, and strict performance tests are carried out to confirm whether the new dot density distribution reaches the ideal effect.

[0055] As Figure 4 shown, the figure is a schematic diagram of the final scheme of the light guide dot structure; if it is found during the actual test that the expected uniformity requirement is not met, the dot density needs to be adjusted and improved according to the calculation method described above. This process may require multiple iterations and fine adjustments until the brightness of the entire display area reaches the ideal state of uniform and dark-free. Through this continuous optimization and testing process, a high-quality preposed light guide plate 1 solution that meets the product requirements can finally be obtained.

[0056] 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 principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents and should be included within the protection scope of the present invention.

Claims

1. A light guide dot structure for a front light display module, characterized in that, Comprising: A light guide plate (1); An electronic paper module (2) disposed on the inner end face of the light guide plate; A light source component (3) disposed on the side of the light guide plate; and Light guide dots (4) disposed on the outer end face of the light guide plate; The light guide dots are arranged in a gradient distribution on the outer end face of the light guide plate along the direction away from the light source component to ensure uniform diffusion of light in the light guide plate.

2. The light guide dot structure for a front light display module according to claim 1, wherein An OCA optical adhesive layer (5) with a bonding effect is disposed between the light guide plate and the electronic paper module.

3. The light guide dot structure for a front light display module according to claim 2, wherein The light source component is disposed on the side of the light guide plate.

4. The light guide dot structure for a front light display module according to claim 3, wherein The thickness of the light guide plate is between 0.1 mm and 0.4 mm, and the material used is PC, PMMA, or MS material.

5. The light guide dot structure for a front light display module according to claim 3, characterized in that, The light guide plate is provided with a light incident side and a light exit side for guiding the light of the light guide dots.

6. The light guide dot structure for a front light display module according to claim 5, wherein, The light guide dots are selected as concave dots or convex dots according to the actual needs of the light guide plate.

7. The light guide dot structure for a front light display module according to claim 6, characterized in that, The size range of the light guide dots is that the width is between 0.01 mm and 0.05 mm, and the depth is between 3 μm and 15 μm.

8. The light guide dot structure for a frontlight display module according to claim 7, characterized in that, The density of the light guide dots on the light incident side is less than the density of the light guide dots on the light exit side.

9. The light guide dot structure for a front light display module according to claim 8, wherein, Along the direction away from the light source component, the density of the light guide dots is distributed in a gradient, and the density of the light guide dots gradually increases.

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