A multilayer laminated reflector structure
Patent Information
- Application Number
- CN202521455022.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-11
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-07-11
AI Technical Summary
[0003]本实用新型的目的在于提供一种多层贴合式反射片结构，以解决传统的反射片结构相对简单，通常为单层结构，其反射效果和光线控制能力有限，例如，单层反射片在反射光线时，容易出现光线散射不均匀的问题，导致背光模组的亮度均匀性较差的问题
本实用新型中，通过设置反射层、扩散层增亮机构和保护层机构，基层提供稳定支撑，反射层特殊棱镜槽设计提高反射效率，扩散层使光线分布均匀，增亮机构汇聚引导光线增强显示效果，保护层防止刮擦磨损，各层协同，有效提高光线利用效率，确保光线均匀、明亮出射，保持反射片清洁，延长使用寿命，提升整体光学性能。
Smart Images
Figure CN224788962U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of reflective sheet technology, specifically a multi-layer bonded reflective sheet structure. Background Technology
[0002] In the field of optics, reflectors are an important optical component, widely used in backlight modules, lighting equipment, display devices and many other fields. In backlight modules, the function of reflectors is to reflect the light emitted by the light source back to the optical system to improve the utilization rate of light and thus enhance the display effect. With the continuous development of display technology, the performance requirements for reflective sheets are also getting higher and higher. They are required not only to have high reflectivity, but also to be able to effectively distribute and control light in order to achieve uniform illumination and display. Traditional reflective sheet structures are relatively simple, usually single-layer structures, and their reflection effect and light control capabilities are limited. For example, when a single-layer reflective sheet reflects light, it is easy to cause uneven light scattering, resulting in poor brightness uniformity of the backlight module. Therefore, a multi-layer laminated reflective sheet structure is proposed to address the above problems. Utility Model Content
[0003] The purpose of this invention is to provide a multi-layer laminated reflective sheet structure to solve the problem that traditional reflective sheet structures are relatively simple, usually single-layer structures, and have limited reflection effect and light control capabilities. For example, when a single-layer reflective sheet reflects light, it is easy to have uneven light scattering, resulting in poor brightness uniformity of the backlight module.
[0004] To achieve the above objectives, this utility model provides the following technical solution: A multi-layer laminated reflective sheet structure includes a base layer, a reflective layer bonded to the top of the base layer by an adhesive, a diffusion layer bonded to the top of the reflective layer by an adhesive, a connecting layer bonded to the top of the diffusion layer by an adhesive, a brightening mechanism at the top of the connecting layer, and a protective layer mechanism at the top of the brightening mechanism. The brightening mechanism includes a base light-transmitting layer, an optical adjustment layer, and a surface microstructure layer. The optical adjustment layer is bonded to the top of the base light-transmitting layer by an adhesive, and the surface microstructure layer is bonded to the top of the optical adjustment layer by an adhesive. The lower surface of the base light-transmitting layer is bonded to the upper surface of the connecting layer, and the upper surface of the surface microstructure layer is bonded to the lower surface of the protective layer mechanism.
[0005] As a further optimization of this utility model, the base layer and the reflective layer are located on the same central axis, and the thickness of the base layer is 50-100 micrometers.
[0006] As a further optimization of this utility model, the reflective layer has a rhomboid structure on its sides, a height of 30 micrometers, and a reflectivity of 92%.
[0007] As a further optimization of this utility model, the upper surface of the reflective layer is provided with prism grooves, and the number of prism grooves is set to several. The several prism grooves are arranged linearly at equal intervals, and the distance between every two adjacent prism grooves is 15-20 micrometers.
[0008] As a further optimization of this utility model, the outer side of the diffusion layer is provided with a coating formed by applying a diffusion agent, and the coating thickness of the diffusion layer is 10-20 micrometers.
[0009] As a further optimization of this utility model, the thickness of the basic light-transmitting layer is 25-30 micrometers, the thickness of the optical adjustment layer is 12 micrometers, and the refractive index of the optical adjustment layer is 1.54.
[0010] As a further optimization of this utility model, the protective layer structure includes a base support layer, a protective layer is fixed to the top of the base support layer by an adhesive, and a surface protective layer is fixed to the top of the protective layer by an adhesive. The thickness of the surface protective layer is 2 micrometers, and the surface roughness of the surface protective layer is 0.1 micrometers.
[0011] Compared with the prior art, the beneficial effects of this utility model are: In this invention, by setting up a reflective layer, a diffusion layer, a brightening mechanism, and a protective layer, the base layer provides stable support, the special prism groove design of the reflective layer improves the reflection efficiency, the diffusion layer makes the light distribution uniform, the brightening mechanism converges and guides the light to enhance the display effect, and the protective layer prevents scratches and wear. The synergy of each layer effectively improves the light utilization efficiency, ensures uniform and bright light emission, keeps the reflector clean, extends its service life, and improves the overall optical performance. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the entire utility model; Figure 3 This is a schematic diagram of the brightness enhancement mechanism of this utility model; Figure 4 This utility model Figure 3 A schematic diagram of the structure at point A; Figure 5 This is a side view of the reflective layer of this utility model. Figure 6 This is a side view of the protective layer mechanism of this utility model.
[0013] In the diagram: 1. Base layer; 2. Reflective layer; 3. Diffusion layer; 4. Connecting layer; 5. Brightening mechanism; 51. Basic light-transmitting layer; 52. Optical adjustment layer; 53. Surface microstructure layer; 6. Protective layer structure; 61. Basic support layer; 62. Protective layer; 63. Surface protective layer; 7. Prism groove. Detailed Implementation
[0014] 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.
[0015] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0016] Please see Figure 1-6 This utility model provides a technical solution: A multi-layer laminated reflective sheet structure includes a base layer 1, with the base layer 1 and a reflective layer 2 located on the same central axis. The base layer 1 has a thickness of 50-100 micrometers. The reflective layer 2 is bonded to the top of the base layer 1 with an adhesive. The reflective layer 2 has a rhomboid structure on its sides, a height of 30 micrometers, and a reflectivity of 92%. A diffusion layer 3 is bonded to the top of the reflective layer 2 with an adhesive. The outer side of the diffusion layer 3 is coated with a diffusion agent, with a coating thickness of 10-20 micrometers. A connecting layer 4 is bonded to the top of the diffusion layer 3 with an adhesive. A brightness enhancement mechanism 5 is provided at the top of the connecting layer 4 to enhance brightness. The top of the mechanism 5 is provided with a protective layer mechanism 6; the brightening mechanism 5 includes a basic light-transmitting layer 51, an optical adjustment layer 52 and a surface microstructure layer 53. The thickness of the basic light-transmitting layer 51 is 25-30 micrometers, the thickness of the optical adjustment layer 52 is 12 micrometers, and the refractive index of the optical adjustment layer 52 is 1.54. The top of the basic light-transmitting layer 51 is fixed with the optical adjustment layer 52 by adhesive, and the top of the optical adjustment layer 52 is fixed with the surface microstructure layer 53 by adhesive. The lower surface of the basic light-transmitting layer 51 is fixed with the upper surface of the connecting layer 4, and the upper surface of the surface microstructure layer 53 is fixed with the lower surface of the protective layer mechanism 6.
[0017] As a further implementation of this scheme, a prism groove 7 is formed on the upper surface of the reflective layer 2. The number of prism grooves 7 is set to a certain extent, and the prism grooves 7 are arranged linearly at equal intervals. The distance between each two adjacent prism grooves 7 is 15-20 micrometers. The linear arrangement and equal spacing of the prism grooves 7 can ensure that the light is reflected according to a specific pattern during the reflection process, reducing the scattering and loss of light. Compared with the case without prism grooves 7 or with irregular arrangement, the light can be reflected back to the optical system at a more concentrated and orderly angle, further improving the reflection efficiency, thereby improving the light utilization efficiency of the entire reflective sheet structure. As a further implementation of this solution, the protective layer mechanism 6 includes a base support layer 61, a protective layer 62 is fixed to the top of the base support layer 61 by adhesive, and a surface protective layer 63 is fixed to the top of the protective layer 62 by adhesive. The surface protective layer 63 has a thickness of 2 micrometers and a surface roughness of 0.1 micrometers, which makes the surface of the reflector relatively smooth, reduces the adhesion of dust and other impurities, keeps the reflector clean, and is conducive to the propagation and reflection of light.
[0018] Workflow: Light first comes into contact with substrate 1, which is made of PET film with a thickness between 50-100 micrometers. Substrate 1 possesses good mechanical properties and chemical stability, providing initial light conduction and a stable foundation for subsequent optical processing layers. This ensures the light can smoothly pass through to the next layer. The light then reaches reflective layer 2, a prism structure layer formed on the PET film through a molding process. The prism grooves 7 have a height of 5-15 micrometers, a bottom width of 10-20 micrometers, and a spacing of 15-20 micrometers between adjacent grooves. The material has a reflectivity of 90%. Here, the light is reflected back to the optical system at a specific angle by the prism grooves 7. Due to the special design of the prism structure, the reflection efficiency is greatly improved, allowing more light to be effectively utilized. The light reflected by reflective layer 2 then enters diffuser layer 3. Diffuser layer 3 is formed on the PET film... A coating of silica particles, 1-5 micrometers in diameter and 10-20 micrometers thick, is applied to the T-film. In this layer, light is scattered by the silica particles. Light that might otherwise be unevenly distributed after reflection is now more uniformly distributed through the diffusion layer 3, effectively preventing areas from being too bright or too dark, and making the light distribution more suitable for practical applications. The connecting layer 4 connects the diffusion layer 3 to the brightening mechanism 5. The uniformly distributed light then reaches the brightening mechanism 5, which is a microprism structure formed on the PET film using a microstructure molding process. In the brightening mechanism 5, the microprism structure converges and guides the light, further improving the light emission efficiency, making the light emitted from the reflector brighter and enhancing the overall display effect. It should be noted that the basic light-transmitting layer 51 uses DuPont Melinx ST504. The PET film, with a thickness of 25-30 micrometers, has a light transmittance of 96.5% and a haze of 0.5%. The basic light-transmitting layer 51 can transmit light without loss and maintain the initial light intensity distribution. The optical adjustment layer 52 is made of injection-molded zirconium dioxide composite film with a thickness of 12 micrometers and a refractive index of 1.54. The optical adjustment layer 52 utilizes the refractive index difference of 1.54 vs 1 between PMMA and PET.50. For light rays with an incident angle >45°, interface refraction occurs, converging scattered light from the edge area towards the center. Simultaneously, zirconium dioxide particles micro-scatter some of the light, preventing light intensity concentration in the central area. The surface microstructure layer 53 uses an ultra-precision machined quartz template to ensure efficient light emission, ultimately achieving a light intensity difference between the edge and center ≤8%. Finally, the light propagates to the protective layer mechanism 6. Specifically, the surface protective layer 63 uses a 3MPFPE fluorine-containing coating, coated with a thickness of 2 micrometers using a micro-groove coating machine, and thermo-cured at 120℃ to form a nanoscale protrusion structure. Utilizing the lotus leaf effect structure of the surface protective layer 63, the impact force is dispersed. The nanoscale protrusion structure transforms point contact into surface contact, reducing local pressure. If scratches occur, the silica nanomaterial of the protective layer 62 forms a rigid support, preventing scratches from penetrating into the base support layer 61. The main function of the protective layer mechanism 6 is to protect the entire reflective sheet structure from external scratches and wear, even in daily use or complex environments.
[0019] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-layer laminated reflective sheet structure, comprising a base layer (1), characterized in that: The top of the base layer (1) is fixed with a reflective layer (2) by adhesive, the top of the reflective layer (2) is fixed with a diffusion layer (3) by adhesive, the top of the diffusion layer (3) is fixed with a connecting layer (4) by adhesive, the top of the connecting layer (4) is provided with a brightening mechanism (5), and the top of the brightening mechanism (5) is provided with a protective layer mechanism (6). The brightening mechanism (5) includes a base light-transmitting layer (51), an optical adjustment layer (52) and a surface microstructure layer (53). The top of the base light-transmitting layer (51) is fixed with the optical adjustment layer (52) by adhesive, and the top of the optical adjustment layer (52) is fixed with the surface microstructure layer (53) by adhesive. The lower surface of the base light-transmitting layer (51) is bonded and fixed to the upper surface of the connecting layer (4), and the upper surface of the surface microstructure layer (53) is bonded and fixed to the lower surface of the protective layer mechanism (6).
2. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The base layer (1) and the reflective layer (2) are located on the same central axis, and the thickness of the base layer (1) is 50-100 micrometers.
3. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The reflective layer (2) has a rhomboid structure on its sides, a height of 30 micrometers, and a reflectivity of 92%.
4. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The upper surface of the reflective layer (2) is provided with prism grooves (7), and the number of prism grooves (7) is set to several. The several prism grooves (7) are arranged linearly at equal intervals, and the distance between each two adjacent prism grooves (7) is 15-20 micrometers.
5. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The diffusion layer (3) has a coating formed by applying a diffusion agent on its outer side, and the coating thickness of the diffusion layer (3) is 10-20 micrometers.
6. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The thickness of the basic light-transmitting layer (51) is 25-30 micrometers, the thickness of the optical adjustment layer (52) is 12 micrometers, and the refractive index of the optical adjustment layer (52) is 1.
54.
7. The multi-layer laminated reflective sheet structure according to claim 1, characterized in that: The protective layer structure (6) includes a base support layer (61), the top of which is fixed with a protective layer (62) by an adhesive, and the top of which is fixed with a surface protective layer (63) by an adhesive. The thickness of the surface protective layer (63) is 2 micrometers, and the surface roughness of the surface protective layer (63) is 0.1 micrometers.