LED structure and backlight source

Abstract

The utility model discloses an LED structure and a backlight source, the LED structure comprises a light-emitting assembly and a scattering structure layer which are arranged in a laminated mode, and in the lamination direction, at least part of the edge of the scattering structure layer protrudes out of the edge of the light-emitting assembly; the light emitting divergence angle of the LED structure can be enlarged, optical loss is reduced, and the lighting effect and the visual effect are improved.

Description

Technical Field

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

[0002] The trend toward larger, thinner displays places higher demands on backlight systems. To achieve a wider beam divergence angle using fewer LED chips at a shorter optical distance, current backlight systems rely on components such as total reflection lenses, reflectors, and diffusion films. However, the presence of large lenses and reflectors increases optical loss, impacting both light and visual quality.

[0003] Therefore, the current technology still needs to be improved and enhanced. Utility Model Content

[0004] The present application provides an LED structure and a backlight source, which can expand the light divergence angle of the LED structure, reduce optical loss, and improve light efficiency and visual effects.

[0005] The present application provides an LED structure, which includes a light-emitting component and a scattering structure layer arranged in a stacked manner. In the stacking direction, the edge of the scattering structure layer at least partially protrudes from the edge of the light-emitting component.

[0006] In some embodiments of the LED structure, the center point of the light-emitting component and the center point of the scattering structure layer are located on the same straight line in the stacking direction.

[0007] In the LED structure of some embodiments, a through hole is provided in the central area of ​​the scattering structure layer.

[0008] In some embodiments of the LED structure, the scattering structure layer includes a first microstructure layer, and the first microstructure layer includes a plurality of microstructures.

[0009] In some embodiments of the LED structure, multiple microstructures are arranged in an array.

[0010] In some embodiments of the LED structure, the microstructure has a cylindrical, prism-like, hemispherical, or pyramidal shape.

[0011] In some embodiments of the LED structure, the plurality of microstructures are nanostructures.

[0012] In some embodiments, the LED structure further includes a first reflective structure layer, which is stacked on the scattering structure layer.

[0013] In the LED structure of some embodiments, a second reflective structure layer is disposed around the periphery of the light-emitting component.

[0014] An embodiment of the present application further provides a backlight source, which includes a plurality of the above-mentioned LED structures.

[0015] The present application provides an LED structure and backlight source, wherein the LED structure includes a light-emitting component and a scattering structure layer arranged in a stacked manner. In the stacking direction, the edge of the scattering structure layer at least partially protrudes from the edge of the light-emitting component, so that the scattering structure layer can scatter the light emitted from the contact surface of the light-emitting component while also scattering the light from part of the side wall of the light-emitting component, thereby increasing the light divergence angle of the LED structure. Then, when the LED structure is used to form a backlight source, on the one hand, it can ensure that the LED structure achieves a larger divergence angle at a shorter optical distance, which is conducive to the lightweight design of the product. On the other hand, it can reduce the use of additional lenses, reflective plates and diffusion film structure layers, and 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 achieving the purpose of improving light efficiency and visual effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0017] Figure 1 This is a cross-sectional schematic diagram of the first embodiment of the LED structure provided in the embodiments of the present application.

[0018] Figure 2 This is a cross-sectional schematic diagram of the second embodiment of the LED structure provided in the embodiments of the present application.

[0019] Figure 3 This is a cross-sectional schematic diagram of the third embodiment of the LED structure provided in the embodiments of the present application.

[0020] Figure 4 This is a cross-sectional schematic diagram of the fourth embodiment of the LED structure provided in the embodiments of the present application.

[0021] Figure 5 and Figure 6 This is a schematic diagram of the microstructure arrangement of the first microstructure layer in the LED structure provided in an embodiment of the present application.

[0022] Figure 7 This is a schematic top view of an embodiment of the first microstructure layer in the LED structure provided in an embodiment of the present application.

[0023] Figure 8 Provided in the embodiments of this application Figure 7 Schematic diagram of light.

[0024] Figure 9This is a schematic top view of another embodiment of the first microstructure layer in the LED structure provided in an embodiment of the present application.

[0025] Figure 10 Provided in the embodiments of this application Figure 9 Schematic diagram of light.

[0026] Figure 11 This is a cross-sectional schematic diagram of the fifth embodiment of the LED structure provided in the embodiments of the present application.

[0027] Figure 12 This is a cross-sectional schematic diagram of a first embodiment of the first reflective structure layer in the LED structure provided in an embodiment of the present application.

[0028] Figure 13 Schematic diagram of optical interference of the optical thin film layer in the LED structure provided in an embodiment of the present application.

[0029] Figure 14 This is a cross-sectional schematic diagram of a second embodiment of the first reflective structure layer in the LED structure provided in an embodiment of the present application.

[0030] Figure 15 This is a cross-sectional schematic diagram of a third embodiment of the first reflective structure layer in the LED structure provided in an embodiment of the present application.

[0031] Figure 16 This is a cross-sectional schematic diagram of a sixth embodiment of the LED structure provided in the embodiments of the present application.

[0032] Figure 17 This is a cross-sectional schematic diagram of a seventh embodiment of the LED structure provided in the embodiments of the present application.

[0033] Figure 18 This is a schematic cross-sectional view of an eighth embodiment of the LED structure provided in the embodiments of the present application.

[0034] Figure 19 This is a cross-sectional schematic diagram of a ninth embodiment of the LED structure provided in the embodiments of the present application.

[0035] Reference numerals:

[0036] 11. Light-emitting component; 12. Scattering structure layer; 13. First reflective structure layer; 131. Optical thin film layer; 14. Second reflective structure layer;

[0037] 111. Back reflection layer; 112. Light-emitting layer; 113. Substrate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0039] 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 this application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0040] See also Figure 1 This embodiment provides an LED structure comprising a stacked light-emitting component 11 and a scattering structure layer 12. In the stacking direction, the edge of the scattering structure layer 12 at least partially protrudes beyond the edge of the light-emitting component 11. The direction from the light-emitting component 11 toward the scattering structure layer 12 is the light-emitting direction of the LED structure. The scattering structure layer 12 is used to adjust the divergence angle of light emitted from the light-emitting component 11, thereby increasing the light-emitting divergence angle of the LED structure in the light-emitting direction.

[0041] Specifically, the scattering structure layer 12 is stacked with the light emitting component 11, and the stacking direction of the scattering structure layer 12 and the light emitting component 11 is taken as the first direction, and the direction of the side wall of the light emitting component 11 is taken as the second direction, and the first direction and the second direction intersect. In the first direction, the scattering structure layer 12 and the light emitting component 11 at least partially overlap, and the scattering structure layer 12 and the light emitting component 11 may be staggered, and the edge of the scattering structure layer 12 protrudes from the edge of the light emitting component 11, such as Figure 1 The scattering structure layer 12 may also completely cover the light emitting component 11, and the edge portion of the scattering structure layer 12 may also protrude from the edge of the light emitting component 11, as shown. Figure 2 shown.

[0042] In this embodiment, the scattering structure layer 12 may be in contact with the light emitting component 11 (eg Figure 1 A area in or Figure 2At the same time, it can also scatter the outgoing light from some side walls of the light-emitting component 11 (such as area B), thereby increasing the light divergence angle of the LED structure in the light-emitting direction. Then, when using this LED structure to form a backlight source, on the one hand, it can ensure that the LED structure can achieve a larger divergence angle at a shorter optical distance, which is conducive to the lightweight design of the product. On the other hand, it can reduce the use of additional lenses, reflective plates and diffusion film structure layers, and 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 achieving the purpose of improving light efficiency and visual effects.

[0043] See also Figure 3 In some embodiments, the center point of the light-emitting component 11 and the center point of the scattering structure layer 12 are located on the same straight line in the stacking direction. In this case, the edge of the scattering structure layer 12 protrudes from the edge of the light-emitting component 11 in the stacking direction, and the protruding portion of the scattering structure layer 12 completely covers the edge of the light-emitting component 11. The center point of the light-emitting component 11 and the center point of the scattering structure layer 12 are located on the same straight line in the stacking direction, that is, the centers of the light-emitting component 11 and the scattering structure layer 12 in the stacking direction are aligned, thereby ensuring uniform coverage of the light-emitting component 11 by the scattering structure layer 12, so that the protruding portion of the scattering structure layer 12 scatters the side light of the light-emitting component 11 more comprehensively. On the one hand, the scattering structure layer 12 can scatter the light emitted from the contact surface with the light-emitting component 11; on the other hand, the scattering structure layer 12 can also scatter the light emitted from the entire side wall of the light-emitting component 11. Compared with scattering the light emitted from a portion of the side wall of the light-emitting component 11, this can further expand the scattering range and increase the light divergence angle in the light output direction of the LED structure.

[0044] See also Figure 4 In some embodiments, a through hole is provided in the center of the scattering structure layer 12. The through hole can be a cylindrical hole or a prismatic hole, which is not limited in this application. In this embodiment, while the edge of the scattering structure layer 12 protrudes beyond the edge of the light-emitting component 11, the scattering structure layer 12 can also completely cover the light-emitting surface of the light-emitting component 11 in the first direction, or can also partially cover the light-emitting surface of the light-emitting component 11 in the first direction.

[0045] In some embodiments, the scattering structure layer 12 includes a first microstructure layer; 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 can all 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 can be a combination of a variety 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, which is not specifically limited in this application. In this embodiment, the maximum center distance between the microstructures is greater than the wavelength of the light emitted by the light-emitting component 11, and the corresponding dimensions of each microstructure are greater than the wavelength of the light emitted by the light-emitting component 11 and less than the maximum center distance, so as to achieve a scattering effect on the light and expand the light divergence angle of the LED structure.

[0046] 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. For example, the shape of the microstructure is cylindrical: Figure 5 As shown, the multiple microstructures in the first microstructure layer are arranged in a rectangular array, and p1 and p2 represent the center distances between two columns of microstructures. Figure 6 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.

[0047] As an embodiment, the plurality of microstructures are arranged in a rectangular array, and the center distance between two adjacent microstructures is greater than the wavelength of the first emitted light; for example, the center distance is 1.5 times or 2 times the wavelength. Figure 5 The multiple microstructures are arranged in an array, and p1 and p2 are equal to and greater than the wavelength of the first emitted light. If the light emitted by the LED structure is blue light, the wavelength of the first emitted light is the blue light wavelength; if the light emitted by the LED structure is red light, the wavelength of the first emitted light is the red light wavelength.

[0048] As an embodiment, the plurality of microstructures are arranged in a concentric array, and the interval between two adjacent concentric circles is greater than the wavelength of the first emitted light; for example, the interval is 1.5 times or 2 times the wavelength. Figure 6 As shown in p3 and p4 in FIG, p3 and p4 are equal to and greater 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 blue light wavelength; if the emitted light of the LED structure is red light, the wavelength of the first emitted light is the red light wavelength.

[0049] 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 first microstructure layer has grating diffraction characteristics, thereby coupling the light passing through the structure layer to high-order diffraction through the first microstructure layer, thereby achieving an expansion of the divergence angle. For details, please refer to Figure 7 and Figure 8 Taking the prismatic microstructures in the first microstructure layer as an example, a beam of incident light at a specific angle is diffracted into multiple angles, or diffraction orders, by the arrayed structural layers. This results in a wider range of angular output, thus diffusing the light and achieving a more uniform light spot. Furthermore, by precisely controlling the size of the arrangement period (e.g., the sizes of p1, p2, p3, and p4), the intensities of different diffraction orders can be adjusted, further achieving the effect of light diffusion and uniformity.

[0050] As an embodiment, the microstructures in the first microstructure layer are nano-microstructure layers, that is, the microstructures 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 expanding the divergence angle is more significant. Specifically, when the multiple microstructures in the first microstructure layer are arranged in an array, the size of the microstructure is smaller than the arrangement period formed by the array arrangement. Among them, the angle of expanding the divergence angle can be adjusted by adjusting the size of the microstructure; for example, adjusting the height and thickness of the cylindrical microstructure; adjusting the height and bottom side length of the pyramidal microstructure, etc.

[0051] Please also refer to Figure 9 and Figure 10 The sizes of the multiple microstructures in the first microstructure layer can be different. For example, the diameters of the microstructures at different locations of the cylindrical microstructure can be different, and the heights of the microstructures at different locations can also be different. In this embodiment, the direction of the incident light at each local microstructure position is controlled, thereby ultimately achieving the diffusion and uniformity of the overall incident light. The corresponding principle is as follows: Figure 10 shown.

[0052] Please also refer to Figure 11 In some embodiments, the LED structure further includes a first reflective structure layer 13, which is stacked on the scattering structure layer 12; wherein the first reflective structure layer 13 is used to reflect at least part of the light emitted through the scattering structure layer 12 to the scattering structure layer 12; the scattering structure layer 12 is also used to re-scatter the light reflected by the first reflective structure layer 13, so that the LED structure can obtain a larger light divergence angle.

[0053] In this embodiment, a first reflective structure layer 13 is superimposed on the scattering structure layer 12. When the outgoing light of the light-emitting component 11 is scattered by the scattering structure layer 12, it is reflected by the first reflective structure layer 13. The light reflected by the first reflective structure layer 13 will be scattered again by the scattering structure layer 12. Therefore, by arranging the first reflective structure layer 13 on the scattering structure layer 12, the light can be scattered by the scattering structure layer 12 multiple times, so that the LED structure can obtain a larger divergence angle.

[0054] See also Figure 12 and Figure 13 As an embodiment, the first reflective structure layer 13 includes multiple stacked optical thin film layers 131, with adjacent optical thin film layers 131 having different refractive indices. In this embodiment, by adjusting the thickness of each optical thin film layer 131, incident light at small angles interferes constructively, increasing transmittance and allowing full transmission; while incident light at large angles interferes destructively, reducing transmittance and allowing full reflection. Therefore, first light emitted at a large divergence angle, after passing through the multiple optical thin film layers 131, is reflected back to the scattering structure layer 12, thereby expanding the light divergence angle of the LED structure.

[0055] As an embodiment, the first reflective structure layer 13 may also include a plurality of alternately stacked first and second film layers, wherein the refractive index of the first and second film layers is different. That is, in this embodiment, the first reflective structure layer 13 includes only two optical film layers 131 made of different materials, and the two different optical film layers 131 are alternately stacked in multiple layers.

[0056] As an embodiment, the thickness of the optical film layer 131 is nanometer-sized. For example, the thickness of the optical film layer 131 is sub-wavelength. By using a nanometer-sized film layer, light interference and diffraction effects can be utilized to effectively regulate light.

[0057] As an embodiment, the first reflective structure layer 13 includes a first film layer and a second film layer in a stacked arrangement, 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 first reflective structure layer 13 includes only two optical film layers 131 made of different materials, with each optical film layer 131 being provided in one layer.

[0058] In this embodiment, the thickness of the first film layer and the second film layer can be nanometer-sized. The use of nanometer-sized film layers can effectively regulate light by utilizing the interference and diffraction effect of light. Specifically, by precisely adjusting the thickness of each film layer between multiple film layers, the incident light within a specific angle range can be destructively interfered, the transmittance is reduced, and all is reflected, so that the light can be scattered multiple times. Figure 14As shown, when the incident angle a of the incident light is less than a preset angle range such as 15°, it can pass through, while the incident light at other angles is reflected. Figure 15 As shown, when the incident angle a of the incident light is within a preset angle range, such as 15° to 35°, the light can be transmitted, and the incident light at other angles is reflected.

[0059] As another embodiment, the first reflective structure layer 13 includes a second microstructure layer; the second microstructure layer includes a plurality of microstructures, and the shapes of the microstructures are cylindrical, prismatic, hemispherical, pyramidal, etc. In this embodiment, the shapes of the plurality of microstructures in the second microstructure layer can all be the same, that is, the plurality of microstructures in the second microstructure layer are all cylindrical or prismatic. Of course, the plurality of microstructures in the second microstructure layer can be a combination of a variety of different shapes, that is, the shape of a part of the microstructures in the second 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 light emitted by the light-emitting component 11, and the corresponding dimensions of each microstructure are smaller than the wavelength of the light emitted by the light-emitting component 11, so as to achieve effective reflection of the light.

[0060] The second microstructure layer includes multiple microstructures, and the multiple microstructures are arranged in an array. For example, the multiple microstructures are arranged in a rectangular array, or they can be arranged in a concentric circular array. Similarly, in this embodiment, the multiple microstructures are arranged in an array, and a certain arrangement period is formed between the microstructures; this arrangement period can be greater than the wavelength of the light emitted by the light-emitting component 11, that is, p1 and p2 are the same and greater than the wavelength of the light emitted by the light-emitting component 11, or p3 and p4 are the same and greater than the wavelength of the light emitted by the light-emitting component 11.

[0061] In this embodiment, the reflective effect of the microstructure layer can be adjusted by adjusting the size of the microstructure, adjusting the height and thickness of the cylindrical microstructure, and adjusting the height and bottom side length of the pyramidal microstructure.

[0062] See also Figure 16 A second reflective structure layer 14 is arranged around the periphery of the light-emitting component 11, that is, in this embodiment, based on the side wall of the light-emitting component 11, the second reflective structure layer 14 is arranged around the periphery of the light-emitting component 11; on the one hand, the second reflective structure layer 14 reflects the light emitted through the side wall of the light-emitting component 11 to be emitted through the scattering structure layer 12; on the other hand, the second reflective structure layer 14 processes the light emitted through the side wall of the light-emitting component 11 to increase the divergence angle of the light emitted from the side wall of the light-emitting component 11, thereby improving the light divergence angle of the entire LED structure.

[0063] As an embodiment, the second reflective structure layer 14 may be formed by stacking multiple optical film layers 131 , and the refractive indices of two adjacent optical film layers 131 are different.

[0064] As another embodiment, the second reflective structure layer 14 includes a third microstructure layer. The third microstructure layer includes a plurality of microstructures. The shapes of the microstructures are cylindrical, prism-shaped, hemispherical, pyramidal, etc.

[0065] It should be noted that the structure of the second reflective structure layer 14 in the embodiment of the present application is the same as that of the first reflective structure layer 13 . Since the structure of the first reflective structure layer 13 has been described in detail above, it will not be repeated here.

[0066] See also Figure 17 The present application also provides an LED structure, which includes a back reflection layer 111, a light-emitting layer 112, a scattering structure layer 12, and a substrate 113, which are stacked in sequence. In the stacking direction, the edge of the scattering structure layer 12 at least partially protrudes from the edge of the light-emitting layer 112. The direction from the light-emitting layer 112 toward the scattering structure layer 12 is the light emission direction of the LED structure. The scattering structure layer 12 is used to adjust the divergence angle of the light emitted by the light-emitting layer 112, thereby increasing the light divergence angle of the LED structure in the light emission direction.

[0067] In this embodiment, the scattering structure layer 12 can scatter the outgoing light from the contact surface with the light-emitting layer 112, and can also scatter the outgoing light from the side wall of the light-emitting layer 112, thereby increasing the light divergence angle of the LED structure in the light-emitting direction. Then, when using this LED structure to form a backlight source, on the one hand, it can ensure that the LED structure achieves a larger divergence angle at a shorter optical distance, which is conducive to the lightweight design of the product. On the other hand, it can reduce the use of additional lenses, reflective plates and diffusion film structure layers, and can avoid the film layer from absorbing or reflecting the light energy of the LED structure, thereby reducing the loss of light energy, improving the utilization rate of light, reducing power consumption, and achieving the purpose of improving light efficiency and visual effects. Since the scattering structure layer 12 in this embodiment has the same structure as the above-mentioned scattering structure layer 12, the structure of the scattering structure layer 12 will not be repeated here.

[0068] See also Figure 18 In some embodiments, the LED structure further includes a first reflective structure layer 13, which is stacked on a substrate 113. The substrate 113 in this embodiment can completely cover the scattering structure layer 12, and the corresponding first reflective structure layer 13 can completely cover a portion of the substrate 113. The reflective structure layer is used to reflect at least part of the light emitted by the scattering structure layer 12 to the scattering structure layer 12; the scattering structure layer 12 is also used to re-scatter the light reflected by the reflective structure layer, so that the LED structure can obtain a larger light divergence angle. Since the structure of the first reflective layer in this embodiment is the same as the structure of the first reflective layer described above, the structure of the first reflective layer will not be described in detail here.

[0069] In this embodiment, a reflective structure layer is stacked on the substrate 113. When the outgoing light of the light-emitting layer 112 is scattered by the scattering structure layer 12, it will be reflected by the reflective structure layer. The light reflected by the reflective structure layer will be scattered again by the scattering structure layer 12. Therefore, by setting the reflective structure layer on the substrate 113, the light can be scattered by the scattering structure layer 12 multiple times, so that the LED structure can obtain a larger divergence angle.

[0070] See also Figure 19 In some embodiments, a second reflective structure layer 14 is disposed around the periphery of the light-emitting layer 112. The corresponding second reflective structure layer 14 can also extend around the periphery of the back reflective layer 111. On the one hand, the second reflective structure layer 14 can reflect light emitted through the sidewalls of the light-emitting layer 112 and the sidewalls of the back reflective layer 111 to be emitted through the scattering structure layer 12. On the other hand, the second reflective structure layer 14 can process light emitted through the sidewalls of the light-emitting layer 112 to increase the divergence angle of light emitted from the sidewalls of the light-emitting component 11, thereby improving the light divergence angle of the entire LED structure. Since the structure of the second reflective layer in this embodiment is the same as that of the second reflective layer described above, the structure of the second reflective layer will not be further described here.

[0071] An embodiment of the present application also provides an LED lamp bead, which includes a lamp bead bracket, and the above-mentioned LED structure is arranged in the lamp bead bracket. Since the LED structure is described in detail above, it will not be repeated here.

[0072] An embodiment of the present application further provides a backlight source, which includes a plurality of LED structures as described above. Since the LED structure has been described in detail above, it will not be repeated here.

[0073] An embodiment of the present application also provides a backlight source, which includes a plurality of LED lamp beads as described above, and the LED lamp beads include the above-mentioned LED structure. Since the LED structure is described in detail above, it will not be repeated here.

[0074] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The above is a detailed introduction to the LED structure provided in the embodiments of the present application. 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 solutions and core ideas 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 cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An LED structure, characterized in that: The LED structure includes a light-emitting component and a scattering structure layer that are stacked. In the stacking direction, an edge of the scattering structure layer at least partially protrudes from an edge of the light-emitting component.

2. The LED structure according to claim 1, wherein: The center point of the light emitting component and the center point of the scattering structure layer are located on the same straight line in the stacking direction.

3. The LED structure according to claim 1, wherein: A through hole is provided in the central area of ​​the scattering structure layer.

4. The LED structure according to claim 1, wherein: The scattering structure layer includes a first microstructure layer, and the first microstructure layer includes a plurality of microstructures.

5. The LED structure according to claim 4, characterized in that: A plurality of the microstructures are arranged in an array.

6. The LED structure according to claim 4, characterized in that: The shape of the microstructure is cylindrical, prism-shaped, hemispherical or pyramidal.

7. The LED structure according to claim 4, characterized in that: A plurality of the microstructures are nanostructures.

8. The LED structure according to any one of claims 1 to 7, characterized in that: The LED structure further includes a first reflective structure layer, which is stacked on the scattering structure layer.

9. The LED structure according to any one of claims 1 to 7, characterized in that: A second reflective structure layer is disposed around the periphery of the light-emitting component.

10. A backlight source, characterized in that: The backlight source comprises a plurality of LED structures according to any one of claims 1 to 9.

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