LED structure, LED lamp bead and backlight source

Abstract

The invention discloses an LED structure, an LED lamp bead and a backlight source. The LED structure comprises a light emitting assembly and a light emitting control assembly which are arranged in a stacked mode. Wherein the light emitting control assembly is used for controlling the divergence angle of first emergent light rays of the light emitting assembly, so that the divergence angle of the first emergent light rays is converted into a second angle from a first angle, and the requirement of backlight application is met. The light emitting control assembly is directly added for a single LED chip to form a single LED structure, control over the light emitting divergence angle of the light emitting assembly can be achieved, and it is ensured that light emitting of the LED structure can meet backlight display. When the LED structure is used for forming a backlight source, additional structural layers such as a lens, a reflecting plate and a diffusion film do not need to be additionally arranged, the structure of the backlight source is further simplified, and cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of light source technology, and in particular to an LED structure, an LED lamp bead and a backlight source. Background Art

[0002] LED chips are widely used as light sources in display products. However, the light emitted by the chip has extended light source characteristics and Lambertian characteristics, which cannot directly meet the needs of backlight applications, and it is very difficult to perform optical shaping. Therefore, in actual backlight systems, complex lenses, reflectors, reflective cups, and diffusion films are required to control the light source divergence angle. The existence of the above devices greatly increases the complexity of the backlight system and the cost is high.

[0003] Therefore, the current technology still needs to be improved and enhanced. Summary of the invention

[0004] The present application provides an LED structure, LED lamp beads and backlight source, which can effectively adjust the light source divergence angle to simplify the backlight source structure and reduce costs.

[0005] The present application provides an LED structure, including a light emitting component and a light output control component arranged in layers;

[0006] The light control component is used to control the divergence angle of the first emergent light of the light emitting component, so that the divergence angle of the first emergent light is converted from a first angle to a second angle.

[0007] In some embodiments of the LED structure, the second angle is smaller than the first angle.

[0008] In the LED structure of some embodiments, the light emission control component is used to control the transmission of a first emitted light whose incident angle is within a preset angle range.

[0009] In the LED structure of some embodiments, the light emission control component includes a plurality of stacked optical film layers, and the refractive indexes of two adjacent optical film layers are different.

[0010] In the LED structure of some embodiments, the light emission control component includes a first film layer and a second film layer that are stacked, and the refractive index of the first film layer is different from the refractive index of the second film layer.

[0011] In the LED structure of some embodiments, the light emission control component includes a plurality of first film layers and second film layers alternately stacked, and the refractive index of the first film layer is different from the refractive index of the second film layer.

[0012] In some embodiments of the LED structure, the light output control component includes a first microstructure layer.

[0013] In the LED structure of some embodiments, the first microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array.

[0014] In the LED structure of some embodiments, the first microstructure layer includes a plurality of microstructures, and the plurality of microstructures are nano-microstructures.

[0015] In the LED structure of some embodiments, the plurality of microstructures are arranged in a rectangular array, and the center distance between two adjacent microstructures is smaller than the wavelength of the first emitted light.

[0016] In the LED structure of some embodiments, the plurality of microstructures are arranged in a concentric circle array, and the interval between two adjacent concentric circles is smaller than the wavelength of the first emitted light.

[0017] In some embodiments, the LED structure further includes a light shaping component, and the light shaping component is stacked on the light control component;

[0018] The light-emitting shaping component is used to shape the second emitted light after being processed by the light-emitting control component.

[0019] In some embodiments of the LED structure, the light shaping component includes a grating structure.

[0020] In some embodiments of the LED structure, the light shaping component includes a second microstructure layer.

[0021] In the LED structure of some embodiments, the light emission control component includes a second microstructure layer; the second microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array.

[0022] In the LED structure of some embodiments, the second microstructure layer includes a plurality of microstructures, and the shapes of the microstructures are cylindrical, prism-shaped, hemispherical, or pyramidal.

[0023] In some embodiments of the LED structure, the second microstructure layer includes a plurality of microstructures and a plurality of microstructure nanostructures.

[0024] The LED lamp beads in some embodiments include the above-mentioned LED structure.

[0025] An embodiment of the present application also provides a backlight source, which includes a plurality of LED structures as described above.

[0026] The present application provides an LED structure and a backlight source, wherein the LED structure includes a stacked light-emitting component light-emitting control component; wherein the light-emitting control component is used to control the divergence angle of a first emitted light ray of the light-emitting component, so that the divergence angle of the first emitted light ray is converted from a first angle to a second angle, so as to meet the needs of backlight applications. In the present application, a light-emitting control component is directly added to a single LED chip to form a single LED structure, which can realize the control of the light-emitting divergence angle of the light-emitting component and ensure that the light emitted by the LED structure can meet the backlight display. When the LED structure is used to form a backlight source, there is no need to add additional structural layers such as lenses, reflective plates, and diffusion films, thereby simplifying the structure of the backlight source and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0028] Figure 1 This is a schematic structural diagram of the first embodiment of the LED structure provided in the embodiments of the present application.

[0029] Figure 2 This is a schematic structural diagram of the first embodiment of the light output control component in the LED structure provided in the embodiment of the present application.

[0030] Figure 3 This is a schematic diagram of the relationship between the incident angle and transmittance of light in the light output control component of the LED structure provided in an embodiment of the present application.

[0031] Figure 4 A schematic diagram of the relationship between the incident angle of light and the energy of the emitted light in the light emission control component of the LED structure provided in an embodiment of the present application.

[0032] Figure 5 A schematic diagram of optical interference of an optical thin film layer in an LED structure provided in an embodiment of the present application.

[0033] Figure 6 Provided in the embodiments of this application Figure 2 Schematic diagram of the light in .

[0034] Figure 7 This is a structural schematic diagram of a second embodiment of a light output control component in an LED structure provided in an embodiment of the present application.

[0035] Figure 8 This is a schematic diagram of a plurality of microstructures arranged in a rectangular array in an LED structure provided in an embodiment of the present application.

[0036] Fig. 9 Schematic diagram of multiple microstructures arranged in a concentric circle array in an LED structure provided in an embodiment of the present application

[0037] Fig.10 This is a structural schematic diagram of a third embodiment of the light output control component in the LED structure provided in an embodiment of the present application.

[0038] Fig.11 Provided in the embodiments of this application Fig.10 Schematic diagram of the light in .

[0039] Fig.12 This is a structural schematic diagram of the second embodiment of the LED structure provided in the embodiments of the present application.

[0040] Fig.13 This is a structural schematic diagram of a first embodiment of a light shaping component in an LED structure provided in an embodiment of the present application.

[0041] Fig.14 A top view of the partial structure of a second embodiment of a light shaping component in an LED structure provided in an embodiment of the present application.

[0042] Fig.15 A schematic diagram of the partial structure of a second embodiment of a light shaping component in an LED structure provided in an embodiment of the present application;

[0043] Fig.16 This is a schematic structural diagram of a third embodiment of the light shaping component in the LED structure provided in an embodiment of the present application.

[0044] Fig.17 Provided in the embodiments of this application Fig.15 Schematic diagram of the light in .

[0045] Fig.18 This is a schematic structural diagram of a fourth embodiment of the light shaping component in the LED structure provided in an embodiment of the present application.

[0046] Fig.19 Provided in the embodiments of this application Fig.18 Schematic diagram of the light in .

[0047] Fig. 20 A schematic diagram of the structure of a backlight source provided in an embodiment of the present application.

[0048] Reference numerals:

[0049] 11. Light-emitting component; 12. Light-emitting control component; 121. Optical film layer; 13. Light-emitting shaping component; 10. Substrate; 20. LED structure. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. The features specified as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0052] See also Figure 1 This embodiment provides an LED structure, which includes a stacked light-emitting component 11 and a light-emitting control component 12; wherein the light-emitting control component 12 is used to control the divergence angle of the first emitted light of the light-emitting component 11, so that the divergence angle of the first emitted light is converted from a first angle to a second angle, so as to meet the needs of backlight applications.

[0053] In this embodiment, a light control component 12 is directly added to a single LED chip to form a single LED structure, which can realize the control of the light divergence angle of the light emitting component 11, ensuring that the light emitted by the LED structure can meet the backlight display. When the LED structure is used to form a backlight source, there is no need to add additional structural layers such as lenses, reflective plates and diffusion films, thereby simplifying the structure of the backlight source and reducing costs.

[0054] At the same time, by using the LED structure to form a backlight source, the use of additional lenses, reflective plates and diffusion film layer structural layers can be reduced, which can avoid the film layer from absorbing or reflecting the light energy of the LED structure, thereby reducing light energy loss, improving light utilization, reducing power consumption and improving lighting efficiency.

[0055] In some embodiments, the light control component 12 is used to reduce the divergence angle of the first emergent light, that is, the second angle in this embodiment is smaller than the first angle. For example, the divergence angle of the first emergent light emitted by the light emitting component 11 is [-45°, 45°]. After passing through the light control component 12, the emission angle of the first emergent light can be reduced to [-15°, 15°]. In this embodiment, the divergence angle of the first emergent light is adjusted by setting the light control component 12, which is helpful to alleviate the display problems caused by the light expansion characteristics and Lambertian characteristics of the LED component.

[0056] In some embodiments, the light control component 12 is used to control the transmission of the first outgoing light whose incident angle is within a preset angle range. For example, the preset angle range can be 15° to 35°, or it can be less than 15°, etc. That is, the light control component 12 in this embodiment can reduce the transmittance as the incident angle increases. Then, when the incident angle of the first outgoing light of the light-emitting component 11 exceeds the preset angle range, it cannot pass through the light control component 12, so that the first outgoing light with a large incident angle can be filtered out by the light control component 12, thereby achieving the control of the divergence angle of the first outgoing light.

[0057] See also Figure 2 As an embodiment, the light control component 12 includes a plurality of optical thin film layers 121 stacked in layers, and the refractive indexes of two adjacent optical thin film layers 121 are different, thereby obtaining a film layer whose transmittance decreases as the incident angle increases. Figure 3 As shown in , when the incident angle is greater than 10°, the transmittance drops sharply, while when the incident angle is less than 10°, the transmittance is close to 100%. Figure 4 As shown, when the absolute value of the incident angle of the light is smaller, the energy of the corresponding light emitted through the light control component 12 is higher, and when the incident angle is between -10° and 10°, the energy of the emitted light is higher. Therefore, in this embodiment, the divergence angle of the first emitted light is controlled by depositing a multilayer optical film layer 121. Among them, the materials of two adjacent optical film layers 121 in the multilayer optical film layer 121 are different, so that the refractive index between the two adjacent optical film layers 121 is different. That is, there can be multiple optical film layers 121 of different materials in the multilayer optical film layer 121.

[0058] See also Figure 5 and Figure 6 In this embodiment, the thickness of each optical film layer 121 can be adjusted so that incident light at a small angle interferes constructively, the transmittance increases, and all light is transmitted; while incident light at a large angle interferes destructively, the transmittance decreases, and all light is reflected. Therefore, after the first outgoing light with a large divergence angle passes through the multi-layer optical film layer 121, only the incident angle within the preset angle range, such as less than 15°, can be transmitted, thereby reducing the divergence angle.

[0059] As an embodiment, the light control component 12 may also include a plurality of first film layers and second film layers alternately stacked, and the refractive index of the first film layer is different from the refractive index of the second film layer. That is, in this embodiment, the light control component 12 is only provided with two optical film layers 121 of different materials, and the two different optical film layers 121 are alternately stacked in multiple layers.

[0060] As another embodiment, the light control component 12 includes a first film layer and a second film layer which are stacked, wherein the refractive index of the first film layer and the refractive index of the second film layer are different. That is, in this embodiment, the light control component 12 is only provided with two optical film layers 121 of different materials, and each of the two different optical film layers 121 is provided with one layer.

[0061] Please also read Figure 7 The thickness of the optical film layer in this embodiment can be of nanometer size. For example, the thickness of the optical film layer is sub-wavelength. By using nanometer-sized film layers, the light interference and diffraction effect can be used to effectively adjust the light. Specifically, the thickness of each film layer can be precisely adjusted between multiple film layers so that the incident light within a specific angle range interferes constructively, the transmittance increases, and all incident light within other angle ranges interfere destructively, the transmittance decreases, and all are reflected. Therefore, after the first outgoing light with a large divergence angle passes through the multilayer optical film layer 121, it can only be transmitted if the incident angle is within a preset angle range, such as between 15° and 35°, thereby achieving the regulation of a specific divergence angle.

[0062] As another embodiment, the light control component 12 includes a first microstructure layer, and the first microstructure layer includes a plurality of microstructures, and the shape of the microstructures is cylindrical, prismatic, hemispherical, or pyramidal. In this embodiment, the shapes of the plurality of microstructures in the first microstructure layer may be the same, that is, the plurality of microstructures in the first microstructure layer are all cylindrical or prismatic. Of course, the plurality of microstructures in the first microstructure layer may be a combination of a plurality of different shapes, that is, the shape of a part of the microstructures in the first microstructure layer is cylindrical, and the shape of another part of the microstructures is prismatic, and this application does not make specific limitations on this. In this embodiment, the maximum center distance between the microstructures is smaller than the wavelength of the emitted light of the light-emitting component 11, and the corresponding dimensions of each microstructure are smaller than the wavelength of the emitted light of the light-emitting component 11, so as to reduce the light divergence angle and realize the regulation of the divergence angle.

[0063] In some embodiments, the first microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array. For example, the plurality of microstructures are arranged in a rectangular array, or in a concentric circle array, and the shapes and sizes of the microstructures are consistent. For example, the shape of the microstructure is cylindrical: Figure 8 As shown, the multiple microstructures in the first microstructure layer are arranged in a rectangular array, and p1 and p2 represent the center distance between two columns of microstructures. Fig. 9 As shown, the multiple microstructures in the first microstructure layer are arranged in a concentric circle array, p3 is the interval between the microstructure located at the center of the concentric circle and the adjacent concentric circle, and p4 is the interval between the second concentric circle and the third concentric circle.

[0064] As an embodiment, the plurality of microstructures are arranged in a rectangular array, and the center distance between two adjacent microstructures is less than the wavelength of the first emitted light; for example, the center distance is one-half or one-third of the wavelength. Figure 8 As shown, the center distance between two adjacent microstructures is Figure 8 As shown in p1 and p2 in FIG. A plurality of microstructures are arranged in an array, p1 and p2 are equal and smaller than the wavelength of the first emitted light, if the emitted light of the LED structure is blue light, then the wavelength of the first emitted light is the wavelength of blue light; if the emitted light of the LED structure is red light, then the wavelength of the first emitted light is the wavelength of red light.

[0065] As an embodiment, the plurality of microstructures are arranged in a concentric circle array, and the interval between two adjacent concentric circles is smaller than the wavelength of the first emitted light; for example, the interval is half or one third of the wavelength. Fig. 9 As shown, the interval between two adjacent concentric circles is Fig. 9 As shown in p3 and p4 in , p3 and p4 are equal and smaller than the wavelength of the first emitted light. Similarly, if the emitted light of the LED structure is blue light, the wavelength of the first emitted light is the wavelength of blue light; if the emitted light of the LED structure is red light, the wavelength of the first emitted light is the wavelength of red light.

[0066] In the embodiment of the present application, a plurality of microstructures are arranged in an array, and a certain arrangement period is formed between the microstructures. Fig.10 and Fig.11 As shown, taking the cylindrical microstructure array as an example, in this embodiment, the arrangement period can be precisely controlled as follows Fig.10 The p0 in the image, or the size of each cylinder, such as the height or radius of the cylinder, can regulate the response of the array at different incident angles at a specific wavelength. Specifically, at small angles of incidence, the resonant transmission condition of the subwavelength unit periodic structure is met, and a very high transmittance is achieved. At large angles of incidence, the resonant transmission condition cannot be met, and the transmittance is very low. Then, when the first outgoing light with a large divergence angle passes through the microstructure array, only the incident angle within the preset angle range, such as less than 15°, can pass through, thereby achieving a reduction in the divergence angle.

[0067] As an embodiment, the second microstructure layer includes a plurality of microstructures, and the plurality of microstructures are nano-microstructures, that is, the microstructures in the first microstructure layer are all nano-sized microstructures. Taking the first microstructure layer as a cylindrical array structure as an example, the cylindrical structures in the first microstructure layer are all nano-sized microstructures. In this embodiment, by setting the microstructure to a structure of the same size as the wavelength, that is, a nano-sized structure, it is ensured that the effect of light output regulation is more significant.

[0068] See also Fig.12In some embodiments, the LED structure further includes a light shaping component 13, which is stacked on the light control component 12; wherein the light shaping component 13 is used to shape the second output light processed by the light control component 12 to improve the uniformity of the light.

[0069] In this embodiment, the light shaping component 13 is used to shape the second outgoing light to achieve beam shaping and improve the uniformity of the light. Specifically, in this embodiment, the light shaping component 13 is set to adjust the uniformity of the light spot of the LED structure, and the shape of the light spot can be adjusted, for example, the square light spot is converted into a circular light spot, and the divergence angle of the second outgoing light can be fine-tuned on the basis of the light control component 12, for example, the divergence angle of the second outgoing light is fine-tuned from 15° to 18°.

[0070] As an embodiment, the light shaping component 13 includes a grating structure, such as Fig.13 As shown, the grating structure may be a symmetrical planar annular grating structure, and the planar annular grating structure includes a plurality of annular sub-gratings, each of which may have a different width and may be arranged irregularly, i.e., a non-periodic grating structure is formed; Fig.14 and Fig.15 As shown, it can also be a non-axisymmetric grating structure, which is not limited in this application. When a non-periodic grating structure is set, the direction of the incident light at each local position can be controlled to ultimately achieve the overall diffusion and homogenization of the incident light.

[0071] As an embodiment, the grating structure is a nano-grating structure. For a planar annular grating structure, the width of each annular sub-grating or the spacing between each annular sub-grating is nanometer-sized; for a non-axisymmetric three-dimensional grating structure, the three-dimensional grating structure is a nanometer-sized grating structure, so as to adapt to the wavelength level of the LED structure, thereby improving the light shaping effect.

[0072] As another embodiment, the light shaping component 13 includes a second microstructure layer; the second microstructure layer includes a plurality of microstructures, and the shape of the microstructures is cylindrical, prism-shaped, hemispherical, or pyramidal. In this embodiment, the shapes of the plurality of microstructures in the second microstructure layer can be the same, that is, the plurality of microstructures in the second microstructure layer are all cylindrical or prism-shaped. Of course, the plurality of microstructures in the second microstructure layer can be a combination of a plurality of different shapes, that is, the shape of a portion of the microstructures in the second microstructure layer is cylindrical, and the shape of another portion of the microstructures is prism-shaped, and this application does not make specific limitations on this.

[0073] In some embodiments, the second microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array. For example, the plurality of microstructures are arranged in a rectangular array, or in a concentric circle array. If it is necessary to achieve the purpose of light spot uniformity by fine-tuning the divergence angle of the second emergent light, the maximum center distance between the microstructures in the second microstructure layer in this embodiment may be greater than the wavelength of the emergent light of the light emitting component 11, and the corresponding dimensions of each microstructure are greater than the wavelength of the emergent light of the light emitting component 11 and less than the maximum center distance.

[0074] Please also read Fig.16 and Fig.17 In the embodiment of the present application, multiple microstructures are arranged in an array, and a certain arrangement period is formed between the microstructures, so that the second microstructure layer has diffraction characteristics; a beam of incident light at a specific angle can be diffracted to multiple angles, that is, multiple diffraction orders, through the structure layer, presenting a larger angle range of light, playing a diffusion role, and making the light spot uniform. At the same time, by accurately controlling the arrangement period or the size of the microstructure, the intensity of different diffraction orders can be controlled, further achieving the effect of diffuse light.

[0075] In some embodiments, the microstructures in the second microstructure layer may be of different sizes, such as Fig.18 The cylindrical microstructure layer shown in the figure has different diameters and different intervals between the cylinders, presenting a non-periodic structural arrangement. In this embodiment, the direction of the incident light at each local cylindrical position is controlled, thereby ultimately achieving the diffusion and homogenization of the overall incident light. The corresponding principle is as follows: Fig.19 shown.

[0076] As an embodiment, the plurality of microstructures in the second microstructure layer are nano-microstructures; that is, the microstructures in the second microstructure layer are all nano-sized microstructures. Taking the second microstructure layer as a cylindrical array structure as an example, the cylindrical structures in the second microstructure layer are all nano-sized microstructures. In this embodiment, by setting the microstructure to a structure of the same size as the wavelength, that is, a nano-sized structure, the effect of light shaping is ensured to be more significant.

[0077] The embodiment of the present application also provides an LED lamp bead, which includes a bracket structure and an LED structure arranged in the bracket structure. Since the LED structure is described in detail above, it will not be repeated here.

[0078] See also Fig. 20, the embodiment of the present application also discloses a backlight source, which includes a substrate 10, on which a plurality of the above-mentioned LED structures 20 are attached; since a light control component and a light shaping component are provided for each LED structure 20, the backlight source structure in this embodiment can omit structures such as a diffusion film, a reflective plate or a reflective cup, which can effectively simplify the structure and preparation process of the backlight source, thereby reducing costs. At the same time, reducing the use of lenses, reflective plates and diffusion film layer structural layers can avoid the film layer from absorbing or reflecting the light energy of the LED structure 20, thereby reducing the loss of light energy, so as to improve the visual effect; since lenses, reflective plates and diffusion film layers occupy a large volume and weight, reducing their settings can simplify the structure of the backlight source, reduce the overall volume and weight, and reduce the difficulty and cost of the process.

[0079] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] The LED structure provided in the embodiments of the present application is introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of ​​the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims

1. An LED structure, characterized in that: It includes a light emitting component and a light output control component which are stacked; The light control component is used to control the divergence angle of the first emergent light of the light emitting component, so that the divergence angle of the first emergent light is converted from a first angle to a second angle.

2. The LED structure according to claim 1, characterized in that: The second angle is smaller than the first angle.

3. The LED structure according to claim 1, characterized in that: The light emission control component is used to control the transmission of the first emitted light with an incident angle within a preset angle range.

4. The LED structure according to claim 1, characterized in that: The light emission control component includes a plurality of stacked optical film layers, and the refractive indexes of two adjacent optical film layers are different.

5. The LED structure according to claim 1, characterized in that: The light emission control component includes a first film layer and a second film layer that are stacked, and the refractive index of the first film layer is different from the refractive index of the second film layer.

6. The LED structure according to claim 1, characterized in that: The light emission control component includes a plurality of first film layers and second film layers that are alternately stacked, and the refractive index of the first film layer is different from the refractive index of the second film layer.

7. The LED structure according to claim 1, characterized in that: The light emission control component includes a first microstructure layer.

8. The LED structure according to claim 7, characterized in that: The first microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array.

9. The LED structure according to claim 7, characterized in that: The first microstructure layer includes a plurality of microstructures, and the shapes of the microstructures are cylindrical, prism-shaped, hemispherical, or pyramidal.

10. The LED structure according to claim 7, characterized in that: The first microstructure layer includes a plurality of microstructures, and the plurality of microstructures are nano-microstructures.

11. The LED structure according to claim 8, characterized in that: The plurality of microstructures are arranged in a rectangular array, and the center distance between two adjacent microstructures is smaller than the wavelength of the first emergent light.

12. The LED structure according to claim 8, characterized in that: The plurality of microstructures are arranged in a concentric circle array, and the interval between two adjacent concentric circles is smaller than the wavelength of the first emergent light.

13. The LED structure according to any one of claims 1 to 12, characterized in that: The LED structure further comprises a light shaping component, wherein the light shaping component is stacked on the light control component; The light shaping component is used to shape the second emergent light processed by the light control component.

14. The LED structure according to claim 13, characterized in that: The light shaping component includes a grating structure.

15. The LED structure according to claim 13, characterized in that: The light shaping component includes a second microstructure layer.

16. The LED structure according to claim 13, characterized in that: The light shaping component includes a second microstructure layer, the second microstructure layer includes a plurality of microstructures, and the plurality of microstructures are arranged in an array.

17. The LED structure according to claim 15, characterized in that: The second microstructure layer includes a plurality of microstructures, and the microstructures are in the shape of a cylinder, a prism, a hemisphere, or a pyramid.

18. The LED structure according to claim 15, characterized in that: The second microstructure layer includes a plurality of microstructures, and the plurality of microstructures are nano-microstructures.

19. An LED lamp bead, characterized in that: Comprising the LED structure as described in any one of claims 1-18.

20. A backlight source, characterized in that: The LED structure comprises any one of claims 1-18.

Images