A light-enhancing film with light-concentrating function

Abstract

This utility model discloses a light-enhancing film with a light-focusing function, comprising a base layer, a first light-enhancing layer, and a second light-enhancing layer. A diffusion layer is adhesively bonded to the upper end of the base layer. The first light-enhancing layer is fixedly disposed above the diffusion layer, and the second light-enhancing layer is disposed above the first light-enhancing layer. Several prism pillars are provided on opposite sides of both the first and second light-enhancing layers. A buffer layer is provided between the first and second light-enhancing layers, with its upper and lower ends fixedly connected to the first and second light-enhancing layers, respectively. A protective layer is fixedly connected to the upper end of the second light-enhancing layer. A protective frame is also fitted onto the base layer, and the protective frame is adhesively bonded to all four sides of the base layer, diffusion layer, first light-enhancing layer, second light-enhancing layer, and protective layer. A reflective structure is provided on the inner periphery of the protective frame. This utility model's technical solution can increase the light-enhancing effect, prevent dark areas to a certain extent, prevent light leakage, and enhance the light-focusing effect.

Description

Technical Field

[0001] This utility model relates to a light-enhancing film, and more particularly to a light-enhancing film with a light-concentrating function. Background Technology

[0002] Brightness enhancement film, also known as BEF, is an optical film with a uniform prism pattern precisely molded onto the highly transparent PET surface using acrylic resin. When assembled in front of a backlight, it focuses the light emitted by the light source towards the user of the display device, increasing the brightness of the front by approximately 100%. Furthermore, light that is not utilized outside the viewing angle is recycled through the light reflection effect and focused towards the user at the most appropriate angle.

[0003] Traditional single-layer prism structure light enhancement films are extremely susceptible to damage. Once a part of the prism layer is damaged, a noticeable dark area will appear, greatly affecting the user experience. Furthermore, the light utilization rate is low, and some light sources will leak out from the four sides of the light enhancement film. Utility Model Content

[0004] The main purpose of this invention is to propose a light-enhancing film with a light-concentrating function, which aims to solve the technical problems of existing prism layers being damaged in a certain place, resulting in dark areas and some light sources leaking from the four sides of the light-enhancing film.

[0005] To achieve the above objectives, this utility model proposes a light-enhancing film with a light-concentrating function, comprising a base layer, a first light-enhancing layer, and a second light-enhancing layer. A diffusion layer is bonded to the upper end of the base layer. The first light-enhancing layer is fixedly disposed on the upper end of the diffusion layer. The second light-enhancing layer is disposed above the first light-enhancing layer. Several prism pillars are provided on opposite sides of the first and second light-enhancing layers. A buffer layer is provided between the first and second light-enhancing layers. The upper and lower ends of the buffer layer are fixedly connected to the first and second light-enhancing layers, respectively. A protective layer is fixedly connected to the upper end of the second light-enhancing layer. A protective frame is also fitted onto the base layer. The protective frame is bonded and fixed to the four sides of the base layer, the diffusion layer, the first light-enhancing layer, the second light-enhancing layer, and the protective layer. A reflective structure is provided on the inner periphery of the protective frame.

[0006] Preferably, the reflective structure includes a metal reflective layer, and a plurality of hemispherical grooves are uniformly provided on the inner periphery of the protective frame, and the metal reflective layer is fitted and fixed to the hemispherical grooves.

[0007] Preferably, the prism pillars of the first brightness enhancement layer and the prism pillars of the second brightness enhancement layer are staggered.

[0008] Preferably, the protective layer has a plurality of semi-circular light-focusing strips uniformly arranged at the end opposite to the second light-enhancing layer.

[0009] Preferably, the prism pillars of the first brightness enhancement layer and the second brightness enhancement layer are both embedded in the buffer layer.

[0010] The technical solution of this utility model has the following beneficial effects: By setting a first brightness enhancement layer below the second brightness enhancement layer, the brightness enhancement effect is increased. At the same time, if a certain area of ​​the first or second brightness enhancement layer is damaged, the other brightness enhancement layer can compensate to prevent dark areas from appearing and affecting the user experience. The buffer layer can level and support the sharp corners of the prism pillars of the first and second brightness enhancement layers without affecting the propagation of light. Furthermore, the reflective structure on the protective frame reflects the light leaking from the four sides of the brightness enhancement film back into the brightness enhancement film, preventing light leakage and enhancing the light focusing effect. The protective frame itself can also protect the four sides of the brightness enhancement film. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of a light-concentrating film according to an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the protective frame structure of a light-enhancing film with light-concentrating function according to an embodiment of the present invention.

[0014] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0015] Reference numerals: 1. Base layer; 2. Diffusion layer; 3. First brightening layer; 4. Buffer layer; 5. Second brightening layer; 6. Protective layer; 7. Protective frame; 8. Semi-circular focusing strip; 9. Reflective structure; 10. Prism column; 11. Hemispherical groove; 12. Metal reflective layer. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0018] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0019] This invention proposes a light-enhancing film with light-concentrating function.

[0020] like Figures 1 to 2 As shown, in one embodiment of this utility model, a light-enhancing film with a light-concentrating function includes a base layer 1, a first light-enhancing layer 3, and a second light-enhancing layer 5. A diffusion layer 2 is bonded to the upper end of the base layer 1. The first light-enhancing layer 3 is fixedly disposed on the upper end of the diffusion layer 2. The second light-enhancing layer 5 is disposed above the first light-enhancing layer 3. A plurality of prism pillars 10 are provided on the opposite side of the first light-enhancing layer 3 and the second light-enhancing layer 5. A buffer layer 4 is provided between the first light-enhancing layer 3 and the second light-enhancing layer 5. The upper and lower ends of the buffer layer 4 are fixedly connected to the first light-enhancing layer 3 and the second light-enhancing layer 5, respectively. A protective layer 6 is fixedly connected to the upper end of the second light-enhancing layer 5. A protective frame 7 is also fitted onto the base layer 1. The protective frame 7 is bonded and fixed to the four sides of the base layer 1, the diffusion layer 2, the first light-enhancing layer 3, the second light-enhancing layer 5, and the protective layer 6. A reflective structure 9 is provided on the inner periphery of the protective frame 7.

[0021] Specifically, the base layer 1 is made of optical-grade polyester (PET) film; the diffusion layer 2 is made of diffusion particles (such as silica, acrylate microspheres, etc.) and optical-grade adhesive (such as acrylate adhesive). The diffusion particles and adhesive are mixed and coated on the base layer 1, ensuring good optical transparency and strong adhesion to the base layer 1; the first brightening layer 3 and the second brightening layer 5 are both made of optical-grade acrylic resin. Acrylic resin has high light transmittance and good molding properties, making it suitable for making brightening layers with prism structures; the buffer layer 4 is made of a material with certain elasticity and buffering properties. Polyurethane material is used as buffer layer 4, or epoxy resin can be used. The epoxy resin is evenly coated on the upper prism structure of the first brightening layer 3 by spin coating, spraying or other methods and then smoothed. When the epoxy resin is dry, the second brightening layer 5 is attached to the epoxy resin and pressed tightly so that the prism structure of the second brightening layer 5 is completely embedded in the epoxy resin. The protective layer 6 is made of a transparent material with high hardness and good wear resistance, such as hardened acrylic resin or silicone coating material, to protect the internal structure from scratches and wear. The protective layer 6 is fixed to the upper surface of the second brightening layer 5 by adhesive bonding. The protective frame 7 can be made of plastic (such as ABS plastic) or metal (such as aluminum alloy). The reflective structure 9 is made of a metal coating (such as aluminum coating) or a reflective plastic film (such as aluminized polyester film) with high quasi-reflectivity and is glued to the inner periphery of the protective frame 7.

[0022] Preferably, such as Figure 2 As shown, the reflective structure 9 includes a metal reflective layer 12, and a plurality of hemispherical grooves 11 are uniformly provided on the inner periphery of the protective frame 7. The metal reflective layer 12 is attached and fixed to the hemispherical grooves 11. By attaching the reflective layer to the hemispherical grooves 11, the light is reflected at an angle, which facilitates the upward refraction or reflection of the light source, increases the effective propagation of light, and further enhances the light-gathering effect.

[0023] Preferably, the prism pillars 10 of the first brightness enhancement layer 3 and the second brightness enhancement layer 5 are staggered to make the light presented by the brightness enhancement film more uniform.

[0024] Preferably, the protective layer 6 is provided with a plurality of semi-circular light-concentrating strips 8 at the end opposite to the second brightness enhancement layer 5. The semi-circular light-concentrating strips 8 of the protective layer 6 can be integrally injection molded. In actual use, static electricity is easily generated when the brightness enhancement film and the diffusion film are stacked, which is not conducive to the assembly of the backlight module. The semi-circular light-concentrating strips 8 can further increase the light-concentrating effect, and the top of the strips can lift the diffusion film, reducing the contact area between the strips and the diffusion film and preventing static electricity. In addition, during installation, the diffusion film and the brightness enhancement film are prone to carrying foreign objects, such as dust particles, which are easily scratched when squeezed and rubbed. By having the top of the semi-circular light-concentrating strips 8 abut against the diffusion film, the foreign objects can slide into the gaps between the semi-circular light-concentrating strips 8, which can effectively prevent the two from being scratched.

[0025] Preferably, the prism pillars 10 of the first brightening layer 3 and the second brightening layer 5 are both embedded in the buffer layer 4.

[0026] Specifically, the working principle and usage process of this utility model are as follows: By setting a first brightening layer 3 below the second brightening layer 5, the brightening effect is increased, and when a certain area of ​​the first brightening layer 3 or the second brightening layer 5 is damaged, the other brightening layer can compensate to prevent the appearance of dark areas and affect the user experience. The buffer layer 4 can level and support the sharp corners of the prism pillars 10 of the first brightening layer 3 and the second brightening layer 5 without affecting the propagation of light. The reflective structure 9 on the protective frame 7 reflects the light leaking from the four sides of the brightening film back into the brightening film, preventing light leakage and enhancing the light-gathering effect. The protective frame 7 itself can also protect the four sides of the brightening film.

[0027] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A light-enhancing film with light-concentrating function, comprising a base layer (1), a first light-enhancing layer (3), and a second light-enhancing layer (5), characterized in that, A diffusion layer (2) is glued to the upper end of the base layer (1). The first brightness enhancement layer (3) is fixedly disposed on the upper end of the diffusion layer (2). The second brightness enhancement layer (5) is disposed above the first brightness enhancement layer (3). Several prism pillars (10) are provided on the opposite side of the first brightness enhancement layer (3) and the second brightness enhancement layer (5). A buffer layer (4) is provided between the first brightness enhancement layer (3) and the second brightness enhancement layer (5). The upper and lower ends of the buffer layer (4) are fixedly connected to the first brightness enhancement layer (3) and the second brightness enhancement layer (5) respectively. A protective layer (6) is fixedly connected to the upper end of the second brightness enhancement layer (5). A protective frame (7) is also fitted on the base layer (1). The protective frame (7) is glued and fixed to the four sides of the base layer (1), the diffusion layer (2), the first brightness enhancement layer (3), the second brightness enhancement layer (5) and the protective layer (6). A reflective structure (9) is provided on the inner periphery of the protective frame (7).

2. The light-enhancing film with light-concentrating function according to claim 1, characterized in that, The reflective structure (9) includes a metal reflective layer (12), and the inner periphery of the protective frame (7) is uniformly provided with a plurality of hemispherical grooves (11), and the metal reflective layer (12) is attached and fixed to the hemispherical grooves (11).

3. The light-enhancing film with light-concentrating function according to claim 1, characterized in that, The prism pillars (10) of the first brightening layer (3) and the prism pillars (10) of the second brightening layer (5) are staggered.

4. A light-enhancing film with light-concentrating function according to claim 1, characterized in that, The protective layer (6) has a number of semi-circular light-focusing strips (8) evenly distributed on one end away from the second light-enhancing layer (5).

5. A light-concentrating film according to any one of claims 1 to 4, characterized in that, The prism pillars (10) of the first brightening layer (3) and the prism pillars (10) of the second brightening layer (5) are both embedded in the buffer layer (4).

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