Light leakage reflection structure for front light display module

Abstract

The utility model discloses a light leakage reflection structure for a front light display module. The light leakage reflection 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 component is arranged on the light incident side of the light guide plate; the light leakage reflecting piece is arranged on the light emitting side of the light guide plate; the light emitted into the light guide plate by the light source component is reflected back into the light guide plate through the light leakage reflecting piece, so that part of leaked light on the emergent side is recycled. The light leakage reflecting piece is arranged on the light emitting side of the light guide plate, so that the problem of light leakage of the side edge of the front light guide plate is solved, the display brightness is improved, the energy consumption is reduced, and the display effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic paper display, in particular to a light leakage reflection structure for a front light display module. Background Art

[0002] In electronic paper display products, due to the characteristics of electronic paper display, it is necessary to display and view in the presence of ambient light. In the absence of ambient light, a light source needs to be set in front of the electronic paper module to provide light for the electronic paper so as to view the picture of the electronic paper module. Concave light guide dots are arranged on the upper surface of the front light guide plate, and the light guide dots can make the entire display area achieve a uniform display effect.

[0003] When the LED light passes through the light guide plate, the light guide dots evenly distribute the light in the positive light display area, but part of the light will pass through the side of the light guide plate and leak outside the display area, forming a light leakage phenomenon. Summary 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 purpose, a light leakage reflection structure for a front light display module is adopted to solve the problems put forward in the above background art.

[0005] A light leakage reflection structure for a front light display module includes:

[0006] A light guide plate;

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

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

[0009] A light leakage reflector arranged on the light exit side of the light guide plate;

[0010] The light leakage reflector reflects the light incident on the light guide plate by the light source component back into the light guide plate, so as to recycle and utilize part of the light leakage on the exit side.

[0011] As a further scheme of the utility model: the front light display module further includes an optical adhesive layer arranged between the light guide plate and the electronic paper module for bonding. The optical adhesive layer not only ensures the close bonding between the light guide plate and the electronic paper module, reduces the light loss and reflection problems that may be caused by air gaps, but also further optimizes the light propagation path through its optical characteristics, making the light more uniform and less lossy during transmission, thereby improving the clarity and contrast of the display picture.

[0012] As a further solution of the present utility model: the thickness range of the optical adhesive layer is 100um to 200um. The appropriate thickness also helps to reduce the scattering of light in the adhesive layer and improve the light transmission efficiency.

[0013] As a further solution of the present utility model: the light guide plate is provided with light guide dots for uniform light distribution. The design of the light guide dots enables the light emitted by the light source component to be more evenly distributed within the light guide plate, avoiding the phenomenon of local over-brightness or over-darkness, and further improving the uniformity and visual effect of the display screen.

[0014] 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 material used is PC, PMMA, or MS material. This not only reduces the overall weight of the display module but also ensures good light transmission performance and mechanical strength, making the entire module thinner, lighter, and more durable.

[0015] As a further solution of the present utility model: the light leakage reflector is disposed on the light exit side where the light guide plate and the optical adhesive layer are adhered, and the light leakage reflector is formed by using a reflective UV glue. The UV glue cures quickly, has high bonding strength, and has little influence on the absorption and scattering of light.

[0016] As a further solution of the present utility model: the height of the light leakage reflector does not exceed the surface range of the light guide plate, and the distance from the outer surface of the light guide plate ranges from 0.05 mm ± 0.05 mm. The light leakage reflector neither exceeds the surface range of the light guide plate to affect the installation or use of other components, nor maintains a sufficient distance to form an effective reflecting surface, avoiding problems such as light absorption or scattering caused by too close a distance, thereby maximizing the recovery of leaked light.

[0017] As a further solution of the present utility model: the thickness range of the light leakage reflector is 0.5 mm ± 0.1 mm. The appropriate thickness range not only ensures the strength and stability of the light leakage reflector but also avoids weight increase and cost rise caused by excessive thickness. At the same time, this thickness also ensures that the reflector can uniformly and effectively reflect light, further improving the light recovery efficiency and the overall performance of the display module.

[0018] Compared with the prior art, the present utility model has the following technical effects:

[0019] By adopting the above technical solution, through the setting of the light guide plate, the electronic paper module, the light source component; and the light leakage reflector. A light leakage reflector formed by adding a layer of reflective UV glue is added to the other three sides of the front light guide plate except the side of the LED light source component, so that the light is reflected back into the light guide plate for reuse, improving the overall brightness and display effect.

[0020] The use of the light leakage reflector effectively recovers the light that might otherwise leak from the light-emitting side of the light guide plate and redirects it back into the light guide plate, enhancing the overall brightness and uniformity of the display module, thereby improving the user's visual experience. Description of the Drawings

[0021] The following describes in detail the specific embodiments of the present invention with reference to the accompanying drawings:

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

[0023] Figure 2 Schematic diagram of the light leakage phenomenon of the existing frontlight display module of the disclosed embodiment of the present application;

[0024] Figure 3 Front view of the disclosed embodiment of the present application;

[0025] Figure 4 Right side view of the disclosed embodiment of the present application;

[0026] Figure 5 Schematic diagram of the manufacturing process of the light leakage reflector of the disclosed embodiment of the present application.

[0027] In the figure: 1, light guide plate; 2, electronic paper module; 3, light source component; 4, light leakage reflector; 5, optical adhesive layer; 6, light guide dots. Specific Embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figure 1 , in the embodiment of the present invention, a light leakage reflection structure for a frontlight display module includes a light guide plate 1, an electronic paper module 2, a light source component 3; and a light leakage reflector 4;

[0030] In this embodiment, the light guide plate 1;

[0031] The electronic paper module 2 disposed on the inner end surface of the light guide plate 1;

[0032] The light source component 3 disposed on the light incident side of the light guide plate 1; and

[0033] The light leakage reflector 4 disposed on the light emitting side of the light guide plate 1;

[0034] The light emitted by the light source component 3 into the light guide plate 1 is reflected back into the light guide plate 1 through the light leakage reflector 4, achieving the recycling of part of the light leakage on the outgoing side.

[0035] As Figure 2 shown, the figure is a schematic diagram of the light leakage phenomenon of an existing front light display module; when using the LED light source component 3, the light guide dots 6 on the front light guide plate 1 are responsible for evenly distributing the light of the LED light source component 3 to the surface of the display area to achieve uniform display, but part of the light will emit from the side of the front light guide plate 1, and the LED light source component 3 cannot fully utilize it.

[0036] In this embodiment, the front light display module further includes an optical adhesive layer 5 disposed between the light guide plate 1 and the e-paper module 2 for bonding, and the thickness range of the optical adhesive layer 5 is 100um to 200um.

[0037] Specifically, using OCA optical adhesive as the key material for the optical adhesive layer 5 to connect the front light guide plate 1 and the e-paper module 2, an acrylic-type material is preferably selected, and its thickness is required to be maintained within the range of 100um to 200um. Such a design aims to ensure sufficient bonding strength and optical permeability while taking into account the thinness and lightness of the overall structure.

[0038] In this embodiment, the light guide plate 1 is provided with light guide dots 6 for uniform light distribution. 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 to ensure its good optical performance and structural stability. These materials have excellent light transmittance, high strength, and good impact resistance, and can meet the usage requirements of the light guide plate 1 in various complex environments.

[0039] At the same time, the light guide dots 6 can be concave dots or convex dots according to the actual needs of the light guide plate 1;

[0040] In this embodiment, the light leakage reflector 4 is disposed on the light outgoing side where the light guide plate 1 and the optical adhesive layer 5 are bonded, and the light leakage reflector 4 is formed by a reflective UV glue. Among them, through an automatic dispensing process, on the other three sides, a highly reflective reflective UV white glue is used, and the reflectivity needs to reach more than 95%. A layer of reflective UV white glue is covered, and its function is to reflect the light to be emitted so that it returns to the inside of the light guide plate 1, thereby improving the brightness and visual effect of the overall display module.

[0041] In this embodiment, the height of the light leakage reflector 4 cannot exceed the surface range of the light guide plate 1, and the distance from the outer surface of the light guide plate 1 is in the range of 0.05mm ± 0.05mm.

[0042] In this embodiment, the thickness range of the light leakage reflector 4 is 0.5mm ± 0.1mm.

[0043] As Figure 3 shown, the figure is a front view of a frontlight display module with a light leakage reflector 4;

[0044] As Figure 4 shown, the figure is a right side view of a frontlight display module with a light leakage reflector 4;

[0045] Specifically, the dispensing height of the reflective UV white glue varies according to the thickness of the pre - placed light guide plate 1 and the optical glue layer 5, and different effects will be obtained, and neither can exceed the surface of the pre - placed light guide plate 1.

[0046] In this embodiment, the specific setting steps of the light leakage reflection structure are as follows:

[0047] 1. Bond the light guide plate 1 and the e - paper module 2 together through the full - lamination process of the optical glue layer 5;

[0048] 2. Use the automatic dispensing process to perform automatic dispensing on the light - emitting side of the fully laminated light guide plate 1 and the e - paper module 2;

[0049] 3. Determine the dispensing height according to the thickness of the light guide plate 1 and the optical glue layer 5;

[0050] 4. On the side of the optical glue layer 5 and the light guide plate 1, and within the range not exceeding the outer surface of the light guide plate 1, form a light leakage reflector 4 with a reflectivity of over 95%.

[0051] In this embodiment, the specific process of automatic dispensing is as follows:

[0052] During the automatic dispensing operation, use the dispensing equipment to cure synchronously during the dispensing process, and determine in real time to meet the requirements of the dispensing position and thickness; among them, the dispensing equipment includes a dispensing valve and an ultraviolet lamp;

[0053] Adjust the dispensing valve of the dispensing equipment to reach the preset dispensing position, and adjust the up - and - down height to adapt to different dispensing requirements; at the same time, set the ultraviolet lamp parallel to the rear end of the dispensing valve, and turn it on and move synchronously with the movement of the dispensing valve.

[0054] As Figure 5 shown, the figure is a schematic diagram of the manufacturing process of the light leakage reflector 4;

[0055] Specifically, the reflective UV white glue is in a liquid state before curing. Therefore, during the dispensing operation, it is necessary to adopt the technical means of curing while dispensing. Otherwise, the glue may not be able to accurately reach the preset dispensing position and thickness requirements due to its fluidity.

[0056] To achieve this goal, a dispensing device is required, which mainly includes a dispensing valve, an ultraviolet lamp, etc. The dispensing valve accurately aligns with the position on the side of the front light module where dispensing is required and can adjust the vertical height to adapt to different dispensing requirements.

[0057] At the same time, the ultraviolet lamp is arranged in parallel at the rear end of the dispensing valve and is turned on and moved synchronously with the movement of the dispensing valve. The design purpose is to ensure that during the dispensing process, the reflective UV white glue can be immediately irradiated by ultraviolet light and quickly cured, thus effectively preventing problems such as position deviation or insufficient thickness caused by glue flow.

[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 should be included within the protection scope of the present invention.

Claims

1. A light leakage reflection 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 light incident side of the light guide plate; and A light leakage reflector (4) disposed on the light exit side of the light guide plate; The light leakage reflector reflects the light incident into the light guide plate by the light source component back into the light guide plate, so as to recycle a part of the light leakage on the exit side.

2. The light leakage reflection structure for a front light display module according to claim 1, characterized in that, The front light display module further includes an optical adhesive layer (5) disposed between the light guide plate and the electronic paper module for bonding.

3. The light leakage reflection structure for a frontlight display module according to claim 2, characterized in that, The thickness range of the optical adhesive layer is 100um to 200um.

4. The light leakage reflection structure for a front light display module according to claim 2, wherein The light guide plate is provided with light guide dots (6) for uniform light distribution.

5. The light leakage reflection structure for a frontlight display module according to claim 4, wherein The thickness of the light guide plate is 0.1 mm to 0.4 mm, and the material used is PC, PMMA, or MS material.

6. The light leakage reflection structure for a frontlight display module according to claim 5, wherein, The light leakage reflector is disposed on the light exit side where the light guide plate and the optical adhesive layer are bonded, and the light leakage reflector is formed by a reflective UV glue.

7. The light leakage reflection structure for a front light display module according to claim 6, wherein The height of the light leakage reflector cannot exceed the surface range of the light guide plate, and the distance from the outer surface of the light guide plate is in the range of 0.05mm ± 0.05mm.

8. The light leakage reflection structure for a frontlight display module according to claim 7, characterized in that, The thickness range of the light leakage reflector is 0.5mm ± 0.1mm.

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