QD diffusion plate with anti-dazzle function
By combining multi-layered structures and multi-morphological microstructures, the shortcomings of existing diffusers in light control are solved, achieving high uniformity, low glare, and excellent light color adjustment, thus providing better optical performance.
Patent Information
- Application Number
- CN202520461339.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-17
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-17
AI Technical Summary
Existing diffusers lack the flexibility and precision required for light control, making it difficult to simultaneously meet the requirements of high uniformity, low glare, and excellent color temperature adjustment.
The design employs a multi-layer structure, including a hardening layer, a base diffusion layer, a light-transmitting diffusion layer, and an optical microstructure layer. It combines microstructures of different shapes, such as hemispherical, square frustum, and conical protrusions, and is prepared through photolithography and mold forming. These components work synergistically to achieve uniform distribution and precise control of light.
It significantly reduces glare, improves light uniformity and color temperature regulation, and provides a more comfortable visual environment.
Smart Images
Figure CN223857428U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to QD diffusion plate technical field especially relates to a QD diffusion plate with anti -dazzle function. BACKGROUND
[0002] With the continuous development of display technology and lighting technology, the user's requirement to light quality is higher and higher, not only requires high brightness and high uniformity, but also expects to reduce glare and realize better color performance. Especially in the field of high-end display, high-efficiency lighting system, how to effectively improve the quality of light becomes one of the research focuses. Diffusion plate as one of the key components, its design and performance directly affect the final light efficiency.
[0003] However, some diffusion plates on the current market often rely on single form microstructure design, for example, only using hemispherical microstructure or simple convex structure, etc. These single form microstructures have limited ability in light regulation, and it is difficult to meet multiple requirements such as high uniformity, low glare and excellent light color adjustment.
[0004] For example, some diffusion plates only set hemispherical microstructure on the surface, and realize the diffusion and uniformization of light by adjusting the size, density and distribution of hemispherical microstructure. Although this design is relatively simple, and its manufacturing process is also relatively mature, but it has certain limitations in flexibility and fineness of light regulation.
[0005] Some other diffusion plates use columnar or conical microstructure, mainly through increasing the scattering path of light to achieve the purpose of uniformization. However, the simple columnar or conical microstructure has weak comprehensive light regulation ability, and cannot realize the omnibearing optimization of light. INVENTION CONTENTS
[0006] In order to overcome the above-mentioned shortcomings, the technical problem of the utility model is to provide a QD diffusion plate with anti-glare function.
[0007] Technical scheme: a QD diffusion plate with anti-glare function, including hardening layer, basic diffusion layer, diffusion particle, first light transmission diffusion layer, first hemispherical cavity, second light transmission diffusion layer, second hemispherical cavity and optical microstructure layer, the hardening layer is located at the outermost layer of the diffusion plate, the basic diffusion layer is arranged below the hardening layer and contains a plurality of diffusion particles, the first light transmission diffusion layer is connected below the basic diffusion layer and has a plurality of first hemispherical cavities, the second light transmission diffusion layer is connected below the first light transmission diffusion layer and is provided with a plurality of second hemispherical cavities matched with the first hemispherical cavities, and the optical microstructure layer is connected below the second light transmission diffusion layer.
[0008] Further, the diffusion particle selects the silica nanoparticle with a particle size of 50-200 nanometers.
[0009] Furthermore, the thickness of the first and second light-transmitting diffusion layers is in the range of 20-50 micrometers.
[0010] Furthermore, the optical microstructure layer includes hemispherical microstructures, regular square frustums, and conical protrusions. The hemispherical microstructures are evenly distributed on the optical microstructure layer in a regular grid pattern with equal spacing. The regular square frustums and conical protrusions are also distributed in a regular grid pattern, but they are arranged alternately with the hemispherical microstructures. That is, the rows and columns where the hemispherical microstructures are located do not have regular square frustums and conical protrusions, forming a complementary distribution pattern.
[0011] Furthermore, the hemispherical microstructure is fabricated using photoresist as the base material through a photolithography process.
[0012] Furthermore, the square frustum and the cone-shaped protrusion are prepared by molding polymethyl methacrylate material.
[0013] Furthermore, the diameters of the first and second hemispherical cavities range from 50 to 300 micrometers.
[0014] Furthermore, a quantum dot layer is disposed between the base diffusion layer and the first light-transmitting diffusion layer.
[0015] Beneficial effects: 1. Through the synergistic effect of the hemispherical cavity in the basic diffusion layer, the light-transmitting diffusion layer, and the optical microstructure layer, light can be effectively scattered and refracted, and the light can be evenly distributed throughout the entire visible range, making the light softer and greatly reducing the intensity and contrast of the light, thereby significantly reducing glare and providing users with a more comfortable visual environment.
[0016] 2. The three microstructures—hemispherical microstructure, regular square truncated pyramid, and conical protrusion—work together to achieve comprehensive control of light. The hemispherical microstructure is mainly responsible for initial scattering and softening of light, the regular square truncated pyramid can perform more precise directional adjustment and concentrated dispersion control of light, and the conical protrusion further enhances the mixing and homogenization of light. Together, they enable light to achieve higher uniformity and lower glare levels after passing through the optical microstructure layer. At the same time, they can also work in conjunction with other components such as quantum dot films to achieve better light color and color temperature adjustment effects. Attached Figure Description
[0017] Fig. 1 This is a top view of the present invention.
[0018] Fig. 2 This is a front view of the present invention.
[0019] Explanation of reference numerals in the attached figures: 1. Hardened layer, 2. Basic diffusion layer, 3. Diffusion particles, 4. First light-transmitting diffusion layer, 5. First hemispherical cavity, 6. Second light-transmitting diffusion layer, 7. Second hemispherical cavity, 8. Optical microstructure layer, 9. Hemispherical microstructure, 10. Regular square truncated pyramid, 11. Conical protrusion. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Example: A QD diffuser plate with anti-glare function, such as Figs. 1-2 As shown, the diffuser includes a hardening layer 1, a basic diffusion layer 2, diffusion particles 3, a first light-transmitting diffusion layer 4, a first hemispherical cavity 5, a second light-transmitting diffusion layer 6, a second hemispherical cavity 7, and an optical microstructure layer 8. The hardening layer 1 is located on the outermost layer of the diffuser plate and is used to improve the hardness and wear resistance of the diffuser plate. The basic diffusion layer 2 is located below the hardening layer 1 and contains multiple diffusion particles 3. The diffusion particles 3 can scatter light within this layer, initially changing the direction of light propagation and laying the foundation for subsequent uniform light distribution. The diffusion particles 3 are selected from silica nanoparticles with a particle size of 50-200 nanometers, which have good optical performance and stability. The first light-transmitting diffusion layer 4 is connected below the basic diffusion layer 2 and has multiple first hemispherical cavities 5. The hemispherical structure allows light to undergo multiple reflections and refractions within the cavities, increasing the scattering path of the light. The first light-transmitting diffusion layer 6 is connected below the first light-transmitting diffusion layer 4 and has multiple second hemispherical cavities 7 that cooperate with the first hemispherical cavity 5 to achieve more uniform light diffusion. The diameter of the first hemispherical cavity 5 and the second hemispherical cavity 7 ranges from 50 to 300 micrometers. The light diffusion effect is optimized by precisely controlling the cavity size and distribution density. The optical microstructure layer 8 is connected below the second light-transmitting diffusion layer 6. The thickness of the first light-transmitting diffusion layer 4 and the second light-transmitting diffusion layer 6 is in the range of 20 to 50 micrometers. The moderate thickness can ensure good light transmittance and light uniformity, while not making the entire diffusion plate too thick. A quantum dot layer is set between the base diffusion layer 2 and the first light-transmitting diffusion layer 4 to enhance color performance and brightness efficiency, which is particularly suitable for display devices.
[0022] like Figs. 1-2As shown, the optical microstructure layer 8 includes hemispherical microstructures 9, regular quadrangular pyramids 10 and conical protrusions 11. The hemispherical microstructures 9 are uniformly distributed on the optical microstructure layer 8 in a regular grid arrangement for further adjusting the propagation direction of light and improving optical performance. The regular quadrangular pyramids 10 and the conical protrusions 11 are also distributed in a regular grid arrangement, but are staggered with the hemispherical microstructures 9, i.e. the rows and columns where the hemispherical microstructures 9 are arranged do not have the regular quadrangular pyramids 10 and the conical protrusions 11, forming a complementary distribution pattern. In this way, when the light passes through the microstructures of different shapes, it is subjected to more comprehensive scattering and refraction regulation.
[0023] The hemispherical microstructures 9 are prepared by photolithography using photoresist as the base material, and a small amount of fluorescent quantum dots are doped in the photoresist. These quantum dots can absorb part of the short-wavelength light and emit long-wavelength light, thereby realizing the adjustment and optimization of light color. The regular quadrangular pyramids 10 and the conical protrusions 11 are prepared by mold forming using polymethyl methacrylate material, which has good optical transparency and processing performance.
[0024] When the LED light panel emits light, the light first contacts the hardened layer 1 of the QD diffusion plate. The main function of the hardened layer 1 is to protect the internal structure and ensure that the diffusion plate can work stably in various environments. Subsequently, the light enters the basic diffusion layer 2, and the diffusion particles 3 in this layer begin to play a role. Due to the difference in refractive index between the diffusion particles 3 and the surrounding medium, the light will scatter when passing through the diffusion particles 3, and the propagation direction of the light will be disrupted, preliminarily realizing the uniform distribution of the light. Then, the light passes through the first light-transmitting diffusion layer 4, which further diffuses the light, and the first hemispherical cavity 5 inside the layer plays a key role. After the light enters the hemispherical cavity, it will undergo multiple reflections and refractions on the inner surface of the cavity. The hemispherical structure causes the light to change its propagation direction at different angles, further increasing the scattering path of the light, thereby making the light more uniform. The light continues to propagate to the second light-transmitting diffusion layer 6, and the second hemispherical cavity 7 works in a similar way to scatter and homogenize the light for a second time, further improving the uniformity of the light.
[0025] Finally, the light reaches the optical microstructure layer 8, and the hemispherical microstructures 9 will gently scatter and refract the light like small lenses, causing the light to uniformly diverge in all directions on their surface. The regular quadrangular pyramids 10, with their unique edges and planes, reflect and refract the light in a targeted manner, adjusting the propagation direction of the light and achieving more precise light regulation. The conical protrusions 11, through their conical structure, produce different scattering effects when the light is incident at different angles, further increasing the mixing degree of the light and eliminating the local non-uniformity of the light.
[0026] In this way, the light rays not only realize uniform diffusion after the synergistic effect of each layer, effectively reduce the generation of glare, but also can adjust the light color and color temperature according to the demand, meet the optical demand under different scenes.
[0027] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that changes can be made in these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A QD diffusion plate with anti-glare function, characterized in that, The diffusion plate comprises a hardening layer (1), a basic diffusion layer (2), diffusion particles (3), a first light-transmitting diffusion layer (4), first hemispherical cavities (5), a second light-transmitting diffusion layer (6), second hemispherical cavities (7), and an optical microstructure layer (8). The hardening layer (1) is located at the outermost layer of the diffusion plate. The basic diffusion layer (2) is arranged below the hardening layer (1) and contains a plurality of diffusion particles (3). The first light-transmitting diffusion layer (4) is connected below the basic diffusion layer (2) and has a plurality of first hemispherical cavities (5). The second light-transmitting diffusion layer (6) is connected below the first light-transmitting diffusion layer (4) and is provided with a plurality of second hemispherical cavities (7) matched with the first hemispherical cavities (5). The optical microstructure layer (8) is connected below the second light-transmitting diffusion layer (6). 2.The QD diffusion plate with anti-glare function of claim 1, wherein, The diffusion particles (3) are selected from silica nanoparticles with a particle size of 50-200 nanometers. 3.The QD diffusion plate with anti-glare function of claim 2, wherein, The thickness of the first light-transmitting diffusion layer (4) and the second light-transmitting diffusion layer (6) is in the range of 20-50 micrometers. 4.The QD diffusion plate with anti-glare function of claim 3, wherein, The optical microstructure layer (8) comprises hemispherical microstructures (9), regular quadrangular pyramids (10), and vertebral protrusions (11). The hemispherical microstructures (9) are uniformly distributed on the optical microstructure layer (8) in an equidistant regular grid arrangement. The regular quadrangular pyramids (10) and the vertebral protrusions (11) are also distributed in a regular grid arrangement, but are staggered with the hemispherical microstructures (9), i.e., the rows and columns where the hemispherical microstructures (9) are arranged do not have the regular quadrangular pyramids (10) and the vertebral protrusions (11), forming a complementary distribution pattern. 5.The QD diffusion plate with anti-glare function of claim 4, wherein, The hemispherical microstructures (9) are prepared by using photoresist as the base material through a photolithography process. 6.The QD diffusion plate with anti-glare function of claim 5, wherein, The regular quadrangular pyramids (10) and the vertebral protrusions (11) are prepared by using polymethyl methacrylate material through a mold forming method.
7. The QD diffusion plate with anti-glare function according to claim 6, characterized in that, The diameters of the first hemispherical cavities (5) and the second hemispherical cavities (7) are in the range of 50-300 micrometers. 8.The QD diffusion plate with anti-glare function of claim 7, wherein, A quantum dot layer is arranged between the basic diffusion layer (2) and the first light-transmitting diffusion layer (4).