Optical assembly, light-emitting device, and backlight source
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-11-10
- Publication Date
- 2026-08-13
Smart Images
Figure CN2025133959_13082026_PF_FP_ABST
Abstract
Description
An optical component, a light-emitting device, and a backlight.
[0001] This application claims priority to Chinese Patent Application No. 202520200728.2, filed on February 8, 2025, entitled "An Optical Component, Light Emitting Device and Backlight", the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of optical technology, specifically to an optical component, a light-emitting device, and a backlight. Background Technology
[0003] LED chips are widely used as light sources in display products. However, the light emitted by the chips has extended light source characteristics and Lambertian characteristics, which cannot directly meet the needs of backlight applications. Moreover, optical shaping of them is very difficult. Therefore, in actual backlight systems, complex injection-molded lenses are required for effective light control. They also need to be used in conjunction with reflectors, reflector cups, and diffuser films to adjust the divergence angle of the light source in order to meet the application requirements of the display system. Technical issues
[0004] The backlight system employs a complex injection-molded lens for effective light control, and works in conjunction with reflectors, reflector cups, and diffuser films to adjust the divergence angle of the light source to meet the application requirements of the display system, which increases the cost and complexity of the backlight system. Technical solutions
[0005] This application provides an optical component, a light-emitting device, and a backlight source, which can adjust the divergence angle of the light-emitting chip to simplify the backlight source structure and reduce costs.
[0006] This application provides an optical component, which includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer. A cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, and the cavity is used to accommodate a light-emitting chip.
[0007] The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
[0008] In some embodiments of the optical component, the inner wall surface of the cavity is a concave curved surface.
[0009] In some embodiments of the optical component, the inner wall surface of the cavity is a hemispherical surface.
[0010] In some embodiments of the optical component, the light-emitting shaping structure layer includes a grating structure.
[0011] In some embodiments of the optical component, the light-emitting shaping structure layer includes a microstructure layer.
[0012] In some embodiments of the optical component, the microstructure layer includes a plurality of microstructures arranged in an array.
[0013] In some embodiments of the optical component, the microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
[0014] In some embodiments of the optical component, the microstructure is a nanostructure.
[0015] This application embodiment also provides a light-emitting device, the light-emitting device optical component, the optical component includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer, a cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, the cavity is used to accommodate the light-emitting chip;
[0016] The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
[0017] In some embodiments of the light-emitting device, the inner wall surface of the cavity is a concave curved surface.
[0018] In some embodiments of the light-emitting device, the inner wall surface of the cavity is a hemispherical surface.
[0019] In some embodiments of the light-emitting device, the light-emitting shaping structure layer includes a grating structure.
[0020] In some embodiments of the light-emitting device, the light-emitting shaping structure layer includes a microstructure layer.
[0021] In some embodiments of the light-emitting device, the microstructure layer includes a plurality of microstructures arranged in an array.
[0022] In some embodiments of the light-emitting device, the microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
[0023] In some embodiments of the light-emitting device, the microstructure is a nanostructure.
[0024] This application embodiment also provides a backlight source, which includes the above-mentioned light-emitting device. The light-emitting device includes an optical component, which includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer. A cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, and the cavity is used to accommodate the light-emitting chip.
[0025] The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
[0026] In some embodiments of the backlight, the inner wall surface of the cavity is a concave curved surface.
[0027] In some embodiments of the backlight, the inner wall surface of the cavity is a hemispherical surface.
[0028] In some embodiments of the backlight, the light-emitting shaping structure layer includes a grating structure. Beneficial effects
[0029] This application provides an optical component, a light-emitting device, and a backlight. The optical component includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer. A cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer to accommodate a light-emitting chip. The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer. The optical component adjusts the emitted light from the light-emitting chip once through the lens structure layer, and then adjusts it a second time through the light-emitting shaping structure layer, thereby achieving effective light control of the light-emitting chip and ensuring that the light emitted by the chip meets the requirements of the display product. When using this light-emitting component to form a backlight, it reduces the need for additional reflectors, reflector cups, and diffuser films, simplifying the backlight structure and reducing costs. Attached Figure Description
[0030] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.
[0031] Figure 1 is a schematic diagram of the structure of the first embodiment of the optical component provided in this application.
[0032] Figure 2 is a schematic diagram of the structure of the second embodiment of the optical component provided in this application.
[0033] Figure 3 is a schematic diagram of the structure of the third embodiment of the optical component provided in this application.
[0034] Figure 4 is a schematic diagram of the first structure of the light-emitting shaping structure layer in the optical component provided in the embodiment of this application.
[0035] Figure 5 is a schematic diagram of the second structure of the light-emitting shaping structure layer in the optical component provided in the embodiment of this application.
[0036] Figure 6 is a schematic diagram of the third structure of the light-emitting shaping structure layer in the optical component provided in the embodiment of this application.
[0037] Figure 7 is a schematic diagram of the fourth structure of the light-emitting shaping structure layer in the optical component provided in the embodiment of this application.
[0038] Reference numerals: 11, Lens structure layer; 12, Light-emitting shaping structure layer; 111, Cavity; 13, Refractive surface. Detailed Implementation
[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Features thus defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.
[0041] Please refer to Figure 1. This embodiment provides an optical component, which includes a lens structure layer 11 and a light-emitting shaping structure layer 12 stacked on the lens structure layer 11. A cavity 111 is provided on the side of the lens structure layer 11 away from the light-emitting shaping structure layer 12, and the cavity 111 is used to accommodate a light-emitting chip.
[0042] In this embodiment, the lens structure layer 11 is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer 12 is used to shape the second light emitted after passing through the lens structure layer 11. In this embodiment, the inner wall of the cavity 111 forms a light incident surface of the optical component, and the side of the light-emitting shaping structure layer 12 away from the lens structure layer 11 forms a light emitting surface of the optical component. The cavity 111 in the lens structure layer 11 can be used to cover the light-emitting chip, thereby enabling effective control of the light emitted from the upper surface and sides of the light-emitting chip. By adjusting the emitted light from the light-emitting chip once through the lens structure layer 11 and then again through the light-emitting shaping structure layer 12, effective light control of the light-emitting chip can be achieved, ensuring that the light emitted by the light-emitting chip meets the requirements of the display product. Therefore, when using this light-emitting component to form a backlight, it reduces the need for additional reflectors, reflector cups, and diffuser films, simplifying the backlight structure and reducing costs.
[0043] Please refer to Figure 1. In some embodiments, the inner wall of cavity 111 is a concave curved surface, which may have a certain degree of symmetry. In this embodiment, the inner wall of cavity 111 of the lens structure is set as a concave curved surface to form a refractive surface 13 of the optical component, so as to control the divergence angle of the first light emitted from the light-emitting chip. For example, increasing the divergence angle of the first light can achieve a larger divergence angle of the light-emitting chip to meet the application requirements of the display product.
[0044] Please refer to Figure 2. As one embodiment, the inner wall surface of cavity 111 is a concave curved surface. This concave curved surface can be a hemisphere. The hemisphere has high symmetry. Placing the light-emitting chip at the center of cavity 111 is beneficial to the uniformity of light emission from the light-emitting chip.
[0045] Please refer to Figure 3. As one embodiment, the inner wall surface of cavity 111 can also be multiple concave curved surfaces. When the inner wall surface of cavity 111 is multiple concave curved surfaces, the connection between adjacent curved surfaces is convex, that is, the refractive surface 13 in this embodiment is formed by multiple concave curved surfaces.
[0046] In some embodiments, the light-emitting shaping structure layer 12 includes a grating structure, which serves as the light-emitting surface of the optical component. This grating structure diffracts the second light emitted through the lens structure layer 11, achieving a diffused and uniform light distribution effect to control the light spot. Essentially, the optical component in this embodiment forms a refractive surface 13 and a diffractive surface, enabling two different light control principles to be implemented using a single optical component. The refraction of the lens structure layer 11 increases the divergence angle of the first light, thus expanding the light beam; while the diffraction of the grating structure shapes the second light, improving the uniformity of the light spot and achieving precise light spot control.
[0047] Please refer to Figures 4 and 5 together. As one embodiment, the grating structure can be a nano-grating structure. If the grating structure is a planar annular grating structure, the width of each annular sub-grating or the spacing between each annular sub-grating is nanometer-sized. If the grating structure is a non-axisymmetric three-dimensional grating structure, the three-dimensional grating structure is a nanometer-sized grating structure, thereby making it easier to match the wavelength level of the light-emitting chip and thus improving the light-emitting shaping effect.
[0048] In other embodiments, the light-emitting shaping structure layer 12 includes a microstructure layer that serves as the light-emitting surface of the optical component. This microstructure layer scatters the second light emitted through the lens structure layer 11, achieving a diffused and uniform light distribution effect to control the light spot. Essentially, the optical component in this embodiment forms a refractive surface 13 and a scattering surface, using a single optical component to achieve two different principles of light control. Refraction through the lens structure layer 11 increases the divergence angle of the first light, thus amplifying the light; while scattering through the grating structure shapes the second light, improving the uniformity of the light spot and achieving precise light spot control.
[0049] As one embodiment, multiple microstructures in the microstructure layer are arranged in an array to form a periodic microstructure layer. The period of this microstructure layer, i.e., the center distance between two adjacent microstructures, can be greater than the wavelength of the emitted light from the light-emitting chip, so as to achieve fine-tuning of the second light and improve the uniformity of the light spot.
[0050] The microstructure layer comprises multiple microstructures, which may be cylindrical, prismatic, hemispherical, or pyramidal in shape. These microstructures may be identical, as shown in Figure 6, where all microstructures are prismatic; alternatively, they may be different, such as some being cylindrical and others hemispherical. This application does not impose any limitation on this aspect.
[0051] In practice, the diameters and heights of microstructures at different locations can vary. As shown in Figure 7, multiple microstructures are cylindrical, and the diameters of these cylinders at different locations can differ. In this embodiment, the emission angle of the second light is adjusted by controlling the position of each local microstructure, thereby ultimately achieving a diffused and uniform light effect on the light-emitting chip.
[0052] As one example, multiple microstructures in the microstructure layer are nanostructures, that is, each microstructure is a nanoscale microstructure. By setting the microstructures to be nanoscale structures at the same size as the wavelength, the effect of light shaping is ensured to be more significant.
[0053] In some embodiments, the thickness of the lens structure layer 11 is greater than the thickness of the light-emitting shaping structure layer 12. The lens structure layer 11 can be made of materials suitable for the light-emitting wavelength of the chip, such as quartz or sapphire; the light-emitting shaping structure layer 12 can be made of resin or imprinting adhesive. In this embodiment, the optical component forms a two-layer structure: the light-incident layer forms a refractive surface 13, while the light-emitting layer forms a diffraction or scattering surface. Multiple light control is achieved through different principles to expand the light angle and achieve more precise light spot adjustment.
[0054] This application also provides a light-emitting device, which includes a light-emitting chip covered with an optical component. The optical component adjusts the light emitted from the light-emitting chip to meet the requirements of the display product. Since the optical component has been described in detail above, it will not be repeated here.
[0055] This application also provides a backlight source, which includes multiple light-emitting devices as described above. The light emitted from the light-emitting chip is adjusted once by a lens structure layer, and then further adjusted a second time by a light-emitting shaping structure layer. This enables effective light control of the light-emitting chip, ensuring that the emitted light meets the requirements of the display product. Therefore, when using this light-emitting component to form a backlight, it reduces the need for additional reflectors, reflector cups, and diffuser films, simplifying the backlight structure and reducing costs. Since the optical component has been described in detail above, it will not be repeated here.
[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0057] The optical components provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An optical component, wherein, It includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer. A cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, and the cavity is used to accommodate the light-emitting chip. The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
2. The optical component according to claim 1, wherein, The inner wall of the cavity is a concave curved surface.
3. The optical component according to claim 2, wherein, The inner wall of the cavity is a hemispherical surface.
4. The optical component according to claim 1, wherein, The light-emitting shaping structure layer includes a grating structure.
5. The optical component according to claim 1, wherein, The light-emitting shaping structure layer includes a microstructure layer.
6. The optical component according to claim 5, wherein, The microstructure layer includes multiple microstructures, which are arranged in an array.
7. The optical component according to claim 6, wherein, The microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
8. The optical component according to claim 6, wherein, The microstructure is a nanostructure.
9. A light-emitting device, wherein, The light-emitting device includes an optical component, which includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer. A cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, and the cavity is used to accommodate the light-emitting chip. The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
10. The light-emitting device according to claim 9, wherein, The inner wall of the cavity is a concave curved surface.
11. The light-emitting device according to claim 10, wherein, The inner wall of the cavity is a hemispherical surface.
12. The light-emitting device according to claim 9, wherein, The light-emitting shaping structure layer includes a grating structure.
13. The light-emitting device according to claim 9, wherein, The light-emitting shaping structure layer includes a microstructure layer.
14. The light-emitting device according to claim 13, wherein, The microstructure layer includes multiple microstructures, which are arranged in an array.
15. The light-emitting device according to claim 14, wherein, The microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
16. The light-emitting device according to claim 14, wherein, The microstructure is a nanostructure.
17. A backlight source, wherein, The backlight includes a light-emitting device, the light-emitting device includes an optical component, the optical component includes a lens structure layer and a light-emitting shaping structure layer stacked on the lens structure layer, and a cavity is provided on the side of the lens structure layer away from the light-emitting shaping structure layer, the cavity being used to accommodate the light-emitting chip; The lens structure layer is used to adjust the divergence angle of the first light emitted from the light-emitting chip, and the light-emitting shaping structure layer is used to shape the second light emitted through the lens structure layer.
18. The backlight according to claim 17, wherein, The inner wall of the cavity is a concave curved surface.
19. The backlight according to claim 18, wherein, The inner wall of the cavity is a hemispherical surface.
20. The backlight according to claim 17, wherein, The light-emitting shaping structure layer includes a grating structure.