Optical assembly, light-emitting device and backlight source
By designing optical components such as lenses and light-emitting shaping structures, the problem that LED chip light emission cannot directly meet backlight applications was solved, achieving the effect of simplifying the backlight structure and reducing costs.
Patent Information
- Application Number
- CN202520200728.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-02-08
AI Technical Summary
LED chips have extended light source characteristics and Lambertian characteristics, which cannot directly meet the needs of backlight applications. Existing technologies require complex optical devices for control, which increases the complexity and cost of the backlight system.
Design an optical component including a lens structure layer and a light-emitting shaping structure layer. The lens structure layer is used to adjust the divergence angle, and the light-emitting shaping structure layer is used for secondary shaping processing, which simplifies the backlight structure and reduces the use of reflectors and diffusers.
By adjusting the optical components, effective light control of the light emitted by the light-emitting chip is achieved, meeting the requirements of display products, simplifying the backlight structure, and reducing costs.
Smart Images
Figure CN223870928U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical technology, specifically to an optical component, a light-emitting device, and a backlight. Background Technology
[0002] 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 properties, 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, and reflectors, reflector cups, and diffuser films are also needed to adjust the divergence angle of the light source to meet the application requirements of the display system. The presence of these components greatly increases the complexity and cost of the backlight system.
[0003] Therefore, the technology still needs to be improved and enhanced. Utility Model Content
[0004] 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.
[0005] 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.
[0006] 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.
[0007] In some embodiments of the optical component, the inner wall surface of the cavity is a concave curved surface.
[0008] In some embodiments of the optical component, the inner wall surface of the cavity is a hemispherical surface.
[0009] In some embodiments of the optical component, the light-emitting shaping structure layer includes a grating structure.
[0010] In some embodiments of the optical component, the light-emitting shaping structure layer includes a microstructure layer.
[0011] In some embodiments of the optical component, the microstructure layer includes a plurality of microstructures arranged in an array.
[0012] In some embodiments of the optical component, the microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
[0013] In some embodiments of the optical component, the microstructure is a nanostructure.
[0014] This application also provides a light-emitting device, which includes the optical components described above.
[0015] This application also provides a backlight source, which includes the above-described light-emitting device.
[0016] 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
[0017] 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.
[0018] Figure 1 This is a schematic diagram of the structure of the first embodiment of the optical component provided in this application.
[0019] Figure 2 This is a schematic diagram of the structure of the second embodiment of the optical component provided in this application.
[0020] Figure 3 This is a schematic diagram of the structure of the third embodiment of the optical component provided in this application.
[0021] Figure 4 This is a schematic diagram of the first structure of the light-emitting shaping structure layer in the optical component provided in the embodiments of this application.
[0022] Figure 5 This is a schematic diagram of the second structure of the light-emitting shaping structure layer in the optical component provided in the embodiments of this application.
[0023] Figure 6 This is a schematic diagram of the third structure of the light-emitting shaping structure layer in the optical component provided in the embodiments of this application.
[0024] Figure 7 This is a schematic diagram of the fourth structure of the light-emitting shaping structure layer in the optical component provided in the embodiments of this application.
[0025] Figure label:
[0026] 11. Lens structure layer; 12. Light-emitting shaping structure layer; 111. Cavity; 13. Refractive surface. Detailed Implementation
[0027] 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.
[0028] 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 application, "multiple" means two or more, unless otherwise explicitly specified.
[0029] Please see 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.
[0030] 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.
[0031] Please continue reading. Figure 1In some implementations, the inner wall surface of cavity 111 is a concave curved surface, which may have a certain degree of symmetry. In this embodiment, the inner wall surface 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 adjust the divergence angle of the first light emitted from the light-emitting chip, such as increasing the divergence angle of the first light to achieve a larger divergence angle of the light-emitting chip to meet the application requirements of display products.
[0032] Please see Figure 2 As one embodiment, the inner wall surface of the cavity 111 is a concave curved surface, which can be a hemisphere. The hemisphere has high symmetry, and placing the light-emitting chip at the center of the cavity 111 is beneficial to the uniformity of light emission from the light-emitting chip.
[0033] Please see 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.
[0034] 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.
[0035] Please refer to the following: Figure 4 and Figure 5 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 improve the light-emitting shaping effect.
[0036] 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.
[0037] 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.
[0038] The microstructure layer comprises multiple microstructures, which may be cylindrical, prismatic, hemispherical, or pyramidal in shape. Multiple microstructures within the microstructure layer may be identical, such as... Figure 6 As shown, multiple microstructures are prismatic; the multiple microstructures in the microstructure layer can also be different, such as one part of the multiple microstructures being cylindrical and another part being hemispherical, which is not limited in this application.
[0039] In practice, the diameter of microstructures at different locations can be different, and the height of microstructures at different locations can also be different. For example... Figure 7 As shown, multiple microstructures are cylindrical, and the diameter of the cylinders at different locations may vary. 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.
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] 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, characterized in that, 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, characterized in that, The inner wall of the cavity is a concave curved surface.
3. The optical component according to claim 2, characterized in that, The inner wall of the cavity is a hemispherical surface.
4. The optical component according to claim 1, characterized in that, The light-emitting shaping structure layer includes a grating structure.
5. The optical component according to claim 1, characterized in that, The light-emitting shaping structure layer includes a microstructure layer.
6. The optical component according to claim 5, characterized in that, The microstructure layer includes multiple microstructures, which are arranged in an array.
7. The optical component according to claim 6, characterized in that, The microstructure is cylindrical, prismatic, hemispherical, or pyramidal in shape.
8. The optical component according to claim 6, characterized in that, The microstructure is a nanostructure.
9. A light-emitting device, characterized in that, The light-emitting device includes the optical components as described in any one of claims 1-8.
10. A backlight source, characterized in that, The backlight source includes the light-emitting device as described in claim 9.