Display backplane and display device

Abstract

The embodiment of the present application discloses a display backplane and a display device; the display backplane comprises a drive circuit layer, a plurality of spaced light emitting units located on the drive circuit layer, a convex lens structure located between two adjacent light emitting units, and an optical film located above the convex lens structure and the light emitting unit, and the refractive index of the convex lens structure is less than that of the film layer closest to the convex lens structure on one side of the optical film; the embodiment of the present application sets the convex lens structure between two adjacent light emitting units, uses the refractive index of the convex lens structure which is less than that of the film layer closest to the convex lens structure on one side of the optical film, converges and emits the light between the two adjacent light emitting units, improves the problem that the gap part of the two adjacent light emitting units is dark, improves the technical problem that the display backplane presents alternating distribution of bright and dark areas, and improves the light emitting display effect of the display backplane.

Description

Technical Field

[0001] This invention relates to the field of displays, and more specifically to a display back panel and a display device. Background Technology

[0002] In recent years, consumers have paid more and more attention to the backlighting effect of display back panels. There is a gap between two adjacent light-emitting units on the display back panel, and the light-emitting angle of each light-emitting unit is limited. This results in the brightness of the gap between two adjacent light-emitting units being relatively dark. The light-emitting units are bright areas, and the gap between two adjacent light-emitting units is dark areas, causing the entire display back panel to show an alternating distribution of bright and dark areas.

[0003] Therefore, there is an urgent need for a display backplane and display device to solve the above-mentioned technical problems. Summary of the Invention

[0004] This invention provides a display back panel and a display device that can alleviate the technical problem of alternating bright and dark areas on current display back panels.

[0005] This invention provides a display back panel, comprising:

[0006] Drive circuit layer;

[0007] Multiple spaced-apart light-emitting units are located on the driving circuit layer;

[0008] Multiple convex lens structures are located on the driving circuit layer, with one of the convex lens structures located between two adjacent light-emitting units;

[0009] An optical film is located on the convex lens structure and the light-emitting unit;

[0010] The refractive index of the convex lens structure is less than the refractive index of the film layer closest to the convex lens structure in the optical film.

[0011] Preferably, the convex lens structure is disposed on the same layer as the light-emitting unit; the optical film includes at least two film layers located above the convex lens structure and the light-emitting unit; wherein, in the direction from the light-emitting unit to the side away from the driving circuit layer, the refractive index of the film layers of the optical film gradually decreases.

[0012] Preferably, in the optical film, the difference between the refractive index of the film layer closest to the convex lens structure and the refractive index of the film layer furthest from the convex lens structure is less than the difference between the refractive index of the film layer closest to the convex lens structure and the refractive index of the convex lens structure.

[0013] Preferably, the optical film further includes a plurality of scattering particles located within any layer of the optical film.

[0014] Preferably, any layer of the optical film further includes a matrix; wherein the refractive index of the scattering particles is different from the refractive index of the corresponding matrix.

[0015] Preferably, the refractive index of the scattering particles is greater than the refractive index of the corresponding matrix.

[0016] Preferably, at least one of the scattering particles includes a plurality of depressions located on the surface of the scattering particle.

[0017] Preferably, at least one of the scattering particles includes a particle body and at least one through-hole, the through-hole penetrating the particle body and filled with the matrix of the corresponding film layer.

[0018] Preferably, the display back panel further includes a reflector located between the convex lens structure and the driving circuit layer.

[0019] This invention also provides a display device, including a display back panel and a device body as described above, wherein the display back panel and the device body are integrated into one unit.

[0020] Beneficial effects of the present invention: The embodiments of the present invention provide a convex lens structure between two adjacent light-emitting units. By utilizing the fact that the refractive index of the convex lens structure is less than the refractive index of the film layer closest to the convex lens structure, the light between the two adjacent light-emitting units is converged and emitted, which improves the problem of the brightness being too dim in the gap between the two adjacent light-emitting units, improves the technical problem of the display back panel showing alternating bright and dark areas, and improves the light-emitting display effect of the display back panel. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the first structure of the display back panel provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the second structure of the display backplate provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the third structure of the display back panel provided in an embodiment of the present invention;

[0025] Figure 4This is an enlarged schematic diagram of the first structure of scattering particles in the display backplate provided in an embodiment of the present invention;

[0026] Figure 5 This is an enlarged schematic diagram of the second structure of the scattering particles of the display backplate provided in an embodiment of the present invention;

[0027] Figure 6 This is an enlarged schematic diagram of the third structure of scattering particles in the display backplate provided in an embodiment of the present invention;

[0028] Figure 7 This is an enlarged schematic diagram of the fourth structure of scattering particles in the display backplate provided in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the fourth structure of the display back panel provided in the embodiments of the present invention;

[0030] Figure 9 This is a schematic diagram illustrating the effect of the display back panel provided in an embodiment of the present invention;

[0031] Figure 10 This is a schematic diagram of the first structure of the display device provided in the embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the second structure of the display device provided in the embodiment of the present invention. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Furthermore, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present invention and are not intended to limit the present invention. In the present invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0034] In recent years, consumers have paid more and more attention to the backlighting effect of display back panels. There is a gap between two adjacent light-emitting units on the display back panel, and the light-emitting angle of each light-emitting unit is limited. This results in the brightness of the gap between two adjacent light-emitting units being relatively dark. The light-emitting units are bright areas, and the gap between two adjacent light-emitting units is dark areas, causing the entire display back panel to show an alternating distribution of bright and dark areas.

[0035] Please see Figures 1 to 9This invention provides a display back panel 100, comprising:

[0036] Drive circuit layer 200;

[0037] Multiple spaced-apart light-emitting units 300 are located on the driving circuit layer 200;

[0038] Multiple convex lens structures 400 are located on the driving circuit layer 200, and one of the convex lens structures 400 is located between two adjacent light-emitting units 300;

[0039] An optical film 500 is located above the convex lens structure 400 and the light-emitting unit 300;

[0040] The refractive index of the convex lens structure 400 is less than the refractive index of the film layer of the optical film 500 closest to the convex lens structure 400.

[0041] This invention improves the problem of dim brightness in the gap between two adjacent light-emitting units by setting a convex lens structure between them. The refractive index of the convex lens structure is less than that of the film layer closest to the convex lens structure, which converges and emits light between the two adjacent light-emitting units. This also improves the technical problem of alternating bright and dark areas on the display back panel, and enhances the light emission display effect of the display back panel.

[0042] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0043] In this embodiment, please refer to Figure 1 , Figure 2 The display back panel 100 includes a driving circuit layer 200, a plurality of spaced light-emitting units 300 on the driving circuit layer 200, a convex lens structure 400 between two adjacent light-emitting units 300, and an optical film 500 on the convex lens structure 400 and the light-emitting units 300. The refractive index of the convex lens structure 400 is less than the refractive index of the film layer of the optical film 500 closest to the convex lens structure 400.

[0044] in, Figure 1 , Figure 2 , Figure 3 , Figure 8 The dashed arrows in the diagram represent the path of light rays.

[0045] Please see Figure 9 In (a), if the solution of this embodiment is not adopted, there is currently a dark area between two adjacent light-emitting units 300.

[0046] Please see Figure 9In (b), one of the convex lens structures 400 is located between two adjacent light-emitting units 300. Since the refractive index of the convex lens structure 400 is less than the refractive index of the film layer closest to the convex lens structure 400 on the optical film 500, when light passes through the convex lens structure 400 and strikes the optical film 500, the light is refracted from the low refractive index film layer to the high refractive index film layer. This refraction causes light convergence at the interface between the convex lens and the optical film 500, thereby converging and emitting more light between the two adjacent light-emitting units 300. This increases the brightness between the two adjacent light-emitting units 300, thus mitigating the problem of dim brightness in the gap between the two adjacent light-emitting units 300. This improves the technical problem of alternating bright and dark areas on the display back panel 100, enhancing the light-emitting display effect of the display back panel 100.

[0047] In some embodiments, please refer to Figure 2 The convex lens structure 400 is disposed on the same layer as the light-emitting unit 300; the optical film 500 includes at least two film layers located above the convex lens structure 400 and the light-emitting unit 300; wherein, in the direction from the light-emitting unit 300 to the side away from the driving circuit layer 200, the refractive index of the film layers of the optical film 500 gradually decreases.

[0048] Please see Figure 2 Taking the optical film 500 as an example, which includes two layers, the optical film 500 includes at least a first layer 510 located above the convex lens structure 400 and the light-emitting unit 300, and a second layer 520 located on the first layer 510; wherein the refractive index of the first layer 510 is greater than the refractive index of the second layer 520.

[0049] The light-emitting unit 300 emits light directly toward the side away from the driving circuit layer 200. When the light passes through the first layer 510 and the second layer 520, since the refractive index of the first layer 510 is greater than that of the second layer 520, the light will undergo light divergence refraction in the first layer 510 and the second layer 520, thereby increasing the divergence angle of the light emitted directly by the light-emitting unit 300, increasing the light uniformity of the display back panel 100, improving the problem of the dim brightness in the gap between two adjacent light-emitting units 300, improving the technical problem of the display back panel 100 showing alternating bright and dark areas, and improving the light emission display effect of the display back panel 100.

[0050] In some embodiments, please refer to Figure 8The optical film 500 may include multiple layers. For example, the optical film 500 may also include a third layer 530 located on the side of the second layer 520 away from the first layer 510. The refractive index of the third layer 530 is less than that of the second layer 520, which increases the divergence angle of the light, increases the light uniformity of the display back panel 100, and improves the problem of dim brightness in the gap between two adjacent light-emitting units 300. The number of layers of the optical film 500 can be adjusted according to the actual situation, and no specific number is limited here.

[0051] In some embodiments, in the optical film 500, the difference between the refractive index of the film layer with the highest refractive index and the refractive index of the film layer with the lowest refractive index is less than the difference between the refractive index of the film layer with the highest refractive index and the refractive index of the convex lens structure 400. That is, in the optical film 500, the difference between the refractive index of the film layer closest to the convex lens structure 400 and the refractive index of the film layer furthest from the convex lens structure 400 is less than the difference between the refractive index of the film layer closest to the convex lens structure 400 and the refractive index of the convex lens structure 400.

[0052] The converging and refraction effect of light passing through the convex lens is greater than the diverging and refraction effect of light passing through the optical film 500. This results in more light rays between two adjacent light-emitting units 300 being converged and emitted, increasing the brightness between two adjacent light-emitting units 300. This reduces the problem of the gap between two adjacent light-emitting units 300 being too dark, thereby improving the technical problem of the display back panel 100 exhibiting alternating bright and dark areas and enhancing the light-emitting display effect of the display back panel 100.

[0053] In some embodiments, please refer to Figure 3 The optical film 500 also includes a plurality of scattering particles 600 located within any layer of the optical film 500.

[0054] Adding scattering particles 600 to the optical film 500 increases the degree of light divergence, enhances the light uniformity of the display back panel 100, improves the problem of dim brightness in the gap between two adjacent light-emitting units 300, improves the technical problem of alternating bright and dark areas in the display back panel 100, and enhances the light-emitting display effect of the display back panel 100.

[0055] In some embodiments, any layer of the optical film 500 further includes a matrix; wherein the refractive index of the scattering particles 600 is different from the refractive index of the corresponding matrix. Because the refractive indices of the scattering particles 600 and the matrix are different, light will also be refracted when passing through the surface between the matrix and the scattering particles 600, thereby increasing the divergence of light and improving the light uniformity of the display back panel 100. Simultaneously, the scattering particles 600 can be used to adjust the refractive index of the optical film 500 to adapt to different application scenarios, improve the problem of dim brightness in the gap between two adjacent light-emitting units 300, improve the technical problem of alternating bright and dark areas in the display back panel 100, and improve the light-emitting display effect of the display back panel 100.

[0056] In some embodiments, the refractive index of the scattering particles 600 is greater than the refractive index of the corresponding matrix. The matrix material can be an organic encapsulation material, such as silicone, however, the refractive index of organic encapsulation materials is generally small, making it difficult to achieve a refractive index gradient. The scattering particles 600 material can be inorganic particles, such as TiO2, ZnS, ZrO2, etc., thereby increasing the refractive index of the optical film 500, making it easier to achieve a refractive index gradient in the optical film 500, which is beneficial to improving the degree of light divergence, increasing the light uniformity of the display back panel 100, improving the problem of dim brightness in the gap between two adjacent light-emitting units 300, improving the technical problem of alternating bright and dark areas in the display back panel 100, and improving the light-emitting display effect of the display back panel 100.

[0057] In some embodiments, please refer to Figure 4 At least one of the scattering particles 600 is a solid particle.

[0058] The scattering particle 600 is a solid particle, and its refractive index is different from that of the corresponding film layer. This increases the complexity of the optical structure of the optical film 500 layer. By utilizing the difference in refractive index, the scattering effect of the display light when it is directed towards the scattering particle 600 is enhanced, the light uniformity of the display back panel 100 is increased, the problem of dim brightness in the gap between two adjacent light-emitting units 300 is improved, the technical problem of alternating bright and dark areas in the display back panel 100 is improved, and the light-emitting display effect of the display back panel 100 is enhanced.

[0059] In some embodiments, please refer to Figure 5 At least one of the scattering particles 600 includes a plurality of recesses 610 located on the surface of the scattering particle 600.

[0060] The recess 610 can increase the divergence of light when it hits the scattering particles 600, improve the light scattering effect, increase the light uniformity of the display back panel 100, improve the problem of the brightness being too dark in the gap between two adjacent light-emitting units 300, improve the technical problem of the display back panel 100 showing alternating bright and dark areas, and improve the light-emitting display effect of the display back panel 100.

[0061] In some embodiments, please refer to Figure 6 At least one of the scattering particles 600 includes a particle body 601 and at least one through hole 620, the through hole 620 penetrating the particle body 601 and filled with the matrix of the corresponding film layer.

[0062] The particle body 601 is penetrated through the through hole 620. When it comes into contact with the film layer of the optical film 500, the matrix of the optical film 500 fills the through hole 620. By utilizing the fact that the refractive index of the through hole 620 and the particle body 601 is different from the refractive index of the corresponding film layer, the scattering effect of the display light when it is directed toward the scattering particle 600 is enhanced, the light uniformity of the display back panel 100 is increased, the problem of the brightness being too dim in the gap between two adjacent light-emitting units 300 is improved, the technical problem of the display back panel 100 showing alternating bright and dark areas is improved, and the light-emitting display effect of the display back panel 100 is enhanced.

[0063] In some embodiments, please refer to Figure 7 At least one of the scattering particles 600 includes a particle body 601 and a cavity 630 located within the particle body 601, wherein the refractive index of the medium within the cavity 630 is different from the refractive index of the particle body 601.

[0064] The particle body 601 encloses the cavity 630 and is a hollow structure when there is no filler. The particle body 601 is filled with a medium with a different refractive index, which increases the complexity of the optical structure of the optical film 500 layer. By utilizing the difference in refractive index, the scattering effect of the display light when it is directed towards the scattering particles 600 is enhanced, the light uniformity of the display back panel 100 is increased, the problem of the brightness being too dim in the gap between two adjacent light-emitting units 300 is improved, the technical problem of the display back panel 100 showing alternating bright and dark areas is improved, and the light-emitting display effect of the display back panel 100 is enhanced.

[0065] In some embodiments, the scattering particles 600 including the cavity 630 are filled with a first gas or a first liquid, wherein the refractive index of the first gas is different from the refractive index of the particle body 601, and the refractive index of the first liquid is different from the refractive index of the particle body 601.

[0066] By utilizing the difference in refractive index, the scattering effect of the displayed light when it is directed toward the scattering particles 600 is enhanced, the light uniformity of the display back panel 100 is increased, the problem of the brightness being too dim in the gap between two adjacent light-emitting units 300 is improved, the technical problem of the display back panel 100 exhibiting alternating bright and dark areas is improved, and the light-emitting display effect of the display back panel 100 is enhanced.

[0067] In some embodiments, the refractive index of a gas is generally less than that of a solid or liquid, and the refractive index of the first gas is less than that of the particle body 601. When light is incident from the particle body 601 to the cavity 630, it travels from the side with a higher refractive index to the side with a lower refractive index. When the angle of incidence is greater than the critical angle, the light will undergo total internal reflection at the interface between the particle body 601 and the cavity 630. This enhances the scattering effect of the display light when it is incident on the scattering particles 600, improves the light utilization rate, reduces light loss, and improves the technical problem of the display back panel 100 exhibiting alternating bright and dark areas, thereby improving the light emission display effect of the display back panel 100.

[0068] In some embodiments, in the optical film 500, the difference between the refractive index of the film layer with the highest refractive index and the refractive index of the film layer with the lowest refractive index is less than 0.48. In experiments, this range of extreme refractive index differences can ensure light divergence without causing excessive total internal reflection of light within the optical film 500, thus improving the technical problem of alternating bright and dark areas in the display back panel 100 and enhancing the light emission display effect of the display back panel 100.

[0069] In some embodiments, please refer to Figure 8 The display back panel 100 also includes a reflector 700 located between the convex lens structure 400 and the driving circuit layer 200.

[0070] By improving the utilization rate of light emitted by the light-emitting unit 300 towards the driving circuit layer 200, more light rays between two adjacent light-emitting units 300 are converged and emitted, increasing the brightness between two adjacent light-emitting units 300. This reduces the problem of the gap between two adjacent light-emitting units 300 being too dark, thereby improving the technical problem of the display back panel 100 exhibiting alternating bright and dark areas and improving the light emission display effect of the display back panel 100.

[0071] In some embodiments, the light-emitting unit 300 may be a Mini LED or a Micro LED, and no specific limitation is made here.

[0072] In some embodiments, the convex lens structure 400 can be made of a transparent material, such as silicone, transparent optical adhesive, etc. This is only an example and is not a specific limitation.

[0073] In some embodiments, the refractive index of the convex lens structure 400 gradually increases in the direction from the edge of the display back panel 100 to the center of the display back panel 100. This increases the brightness of the display light in the dark area at the center of the display back panel 100, as human vision is generally focused on the central region of the display back panel 100. By focusing on improving the display light in the central region, the display effect is maximized.

[0074] In some embodiments, the number of recesses 610 gradually increases in the direction from the center of the display back panel 100 to the edge of the display back panel 100.

[0075] Since there are no light-emitting units 300 around the edge of the display back panel 100, the problem of dark areas becomes more serious. Increasing the number of recesses 610 in the edge direction helps to increase the divergence of light when it hits the scattering particles 600, improves the light scattering effect, increases the light uniformity of the display back panel 100, improves the problem of the brightness being too dark in the gap between two adjacent light-emitting units 300, improves the technical problem of the display back panel 100 showing alternating bright and dark areas, and improves the light emission display effect of the display back panel 100.

[0076] This invention improves the problem of dim brightness in the gap between two adjacent light-emitting units by setting a convex lens structure between them. The refractive index of the convex lens structure is less than that of the film layer closest to the convex lens structure, which converges and emits light between the two adjacent light-emitting units. This also improves the technical problem of alternating bright and dark areas on the display back panel, and enhances the light emission display effect of the display back panel.

[0077] Please see Figure 10 The present invention also provides a display device 10, including a display back panel 100 as described above and a device body 20, wherein the display back panel 100 and the device body 20 are combined into one unit.

[0078] For the specific structure of the display back panel 100, please refer to any of the above-described embodiments of the display back panel 100 and the accompanying drawings, which will not be repeated here.

[0079] The technical solution of the present invention will now be described in conjunction with specific embodiments.

[0080] In some embodiments, please refer to Figure 11 The main body 20 of the device may include a back frame 30 located on the side of the driving circuit layer 200 away from the light-emitting unit 300, the back frame 30 forming an inner cavity, and the display back panel 100 located within the inner cavity.

[0081] In some embodiments, please refer to Figure 11The main body 20 of the device may further include a light functional layer 50 located on the side of the optical film 500 away from the light-emitting unit 300 and a functional body 40 located on the light functional layer 50. The functional body 40 includes an array substrate 41, a liquid crystal layer 42, a color filter layer 43, an upper polarizing layer 44, and a lower polarizing layer 45.

[0082] In some embodiments, please refer to Figure 11 The optical functional layer 50 includes a quantum dot film 51 located on the side of the optical film 500 away from the light-emitting unit 300, a first diffusion layer 52 located on the quantum dot film 51, a first brightness enhancement layer 53 located on the first diffusion layer 52, a second brightness enhancement layer 54 located on the first brightness enhancement layer 53, and a second diffusion layer 55 located on the second brightness enhancement layer 54.

[0083] This invention improves the problem of dim brightness in the gap between two adjacent light-emitting units by setting a convex lens structure between them. The refractive index of the convex lens structure is less than that of the film layer closest to the convex lens structure, which converges and emits light between the two adjacent light-emitting units. This also improves the technical problem of alternating bright and dark areas on the display back panel, and enhances the light emission display effect of the display back panel.

[0084] This invention discloses a display back panel and a display device. The display back panel includes a driving circuit layer, a plurality of spaced-apart light-emitting units on the driving circuit layer, a convex lens structure between two adjacent light-emitting units, and an optical film on the convex lens structure and the light-emitting units. The refractive index of the convex lens structure is less than the refractive index of the film layer closest to the convex lens structure. By setting a convex lens structure between two adjacent light-emitting units, and utilizing the fact that the refractive index of the convex lens structure is less than the refractive index of the film layer closest to the convex lens structure, this invention converges and emits light between two adjacent light-emitting units, improving the problem of dim brightness in the gap between two adjacent light-emitting units, and improving the technical problem of alternating bright and dark areas on the display back panel, thus enhancing the light emission display effect of the display back panel.

[0085] The above provides a detailed description of a display back panel and display device provided by the embodiments of the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A display back panel, characterized in that, include: Drive circuit layer; Multiple spaced-apart light-emitting units are located on the driving circuit layer; Multiple convex lens structures are located on the driving circuit layer and are disposed on the same layer as the light-emitting unit, with one of the convex lens structures located between two adjacent light-emitting units; An optical film is located above the convex lens structure and the light-emitting unit, and the optical film includes at least two film layers located above the convex lens structure and the light-emitting unit; The convex lens structure is in contact with the optical film layer, and the refractive index of the convex lens structure is less than the refractive index of the film layer closest to the convex lens structure. The refractive index of the film layer of the optical film gradually decreases in the direction from the light-emitting unit to the side away from the driving circuit layer.

2. The display back panel according to claim 1, characterized in that, In the optical film, the difference between the refractive index of the film layer closest to the convex lens structure and the refractive index of the film layer furthest from the convex lens structure is less than the difference between the refractive index of the film layer closest to the convex lens structure and the refractive index of the convex lens structure.

3. The display back panel according to claim 1, characterized in that, The optical film also includes multiple scattering particles located within any layer of the optical film.

4. The display back panel according to claim 3, characterized in that, Each layer of the optical film also includes a matrix; The refractive index of the scattering particles is different from that of the corresponding matrix.

5. The display back panel according to claim 4, characterized in that, The refractive index of the scattering particles is greater than the refractive index of the corresponding matrix.

6. The display back panel according to claim 5, characterized in that, At least one of the scattering particles includes a plurality of depressions located on the surface of the scattering particle.

7. The display back panel according to claim 5 or 6, characterized in that, At least one of the scattering particles includes a particle body and at least one through-hole, the through-hole penetrating the particle body and filled with the matrix of the corresponding film layer.

8. The display back panel according to claim 1, characterized in that, The display back panel also includes a reflector located between the convex lens structure and the driving circuit layer.

9. A display device, characterized in that, It includes a display back panel and a device body as described in any one of claims 1 to 8, wherein the display back panel and the device body are integrated as one unit.

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