Display panel and manufacturing method therefor, and display device

Abstract

A display panel and a manufacturing method therefor, and a display device. The display panel comprises color conversion units, and the material of each color conversion unit comprises an aerogel and quantum dots mixed in the aerogel, wherein the aerogel comprises a SiO2 aerogel. The heat insulation characteristic of the SiO2 aerogel is utilized, mitigating the problem of heat-induced lifetime degradation of the quantum dots, and improving the reliability of the quantum dots.

Description

Display panel and manufacturing method thereof, and display device

[0001] This application claims priority to Chinese patent application No. 202311707033.5 filed on December 12, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0003] In the display industry, Micro Light Emitting Diodes (Micro LEDs) are widely considered the ultimate display technology for the future due to their ultra-high contrast, wide color gamut, long lifespan, and rapid response speed. However, current Micro LED technology faces technical bottlenecks, such as micro-LED chips, mass transfer, colorization, and mass repair, hindering rapid industrialization. SUMMARY OF THE INVENTION

[0004] To address the low yield of colorization, a technology solution combining blue micro-LEDs (uLED-B) and quantum dots (QDs) has emerged. However, in actual production, issues such as QD light mixing and thermal degradation have hindered the commercialization of this technology.

[0005] The present application provides a display panel, which includes: a light board and a color conversion layer arranged on the light board; wherein the color conversion layer includes: a first substrate and a second substrate arranged opposite to each other, and a buffer layer, a reflective layer and a color conversion unit arranged between the first substrate and the second substrate; wherein a plurality of the color conversion units are arranged between the first substrate and the second substrate at intervals, the buffer layer is arranged between any two adjacent color conversion units, and the reflective layer is arranged on the side of the color conversion unit and is located between the color conversion unit and the buffer layer; wherein the surface of the reflective layer close to the color conversion unit is a first curved surface, and the first curved surface protrudes from the color conversion unit toward the buffer layer; wherein the material of the color conversion unit includes: aerogel and quantum dots mixed in the aerogel.

[0006] The present application provides a method for preparing a display panel, which includes the following steps: preparing a light board; preparing a color conversion layer, the color conversion layer including: a first substrate and a second substrate arranged opposite to each other, and a buffer layer, a reflective layer and a color conversion unit arranged between the first substrate and the second substrate; aligning, bonding and packaging the light board and the color conversion layer to form the display panel; wherein the step of preparing the color conversion layer includes: mixing quantum dots and aerogel to form quantum dot aerogel; preparing the buffer layer and a plurality of grooves penetrating the buffer layer on the first substrate, the groove walls of the grooves being second curved surfaces, the second curved surfaces protruding from the color conversion unit toward the buffer layer; preparing the reflective layer on the groove walls of at least one of the grooves, the surface of the reflective layer on the side close to the color conversion unit being a first curved surface, the first curved surface protruding from the color conversion unit toward the buffer layer; filling the quantum dot aerogel in at least one of the grooves to form the color conversion unit; and arranging the second substrate on the buffer layer, the reflective layer and the color conversion unit to form the color conversion layer.

[0007] The present application provides a display device, which includes the display panel described in the present application or a display panel prepared by the method for preparing the display panel described in the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below only disclose some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] FIG1 is a schematic structural diagram of a display panel of the present application;

[0010] FIG2 is a schematic diagram of light rays of the display panel of the present application;

[0011] FIG3 is a schematic diagram of the aerogel of the present application;

[0012] FIG4 is a schematic diagram of mixing red quantum dots and aerogel according to the present application;

[0013] FIG5 is a schematic diagram of mixing green quantum dots and aerogels according to the present application;

[0014] FIG6 is a schematic diagram of a structure in which a buffer layer is prepared on a first substrate and then a groove is formed;

[0015] FIG7 is a schematic diagram showing a structure of preparing a reflective layer, a color conversion unit and a second substrate based on FIG6 ;

[0016] FIG8 is a schematic diagram showing the structure of a light-emitting unit prepared on a driving substrate;

[0017] FIG9 is a schematic structural diagram of preparing an encapsulation layer based on FIG8 .

[0018] Description of reference numerals:

[0019] 100. Display panel;

[0020] 1. Light board; 2. Color conversion layer;

[0021] 11. Driving substrate; 12. Light-emitting unit;

[0022] 13. Encapsulation layer;

[0023] 21. First substrate; 22. Buffer layer;

[0024] 23. Reflection layer; 24. Color conversion unit;

[0025] 25. second substrate; 26. groove;

[0026] 241. Aerogel; 242. Quantum dots;

[0027] 2421, red quantum dots; 2422, green quantum dots;

[0028] 261, trough wall; 262, trough bottom;

[0029] 263, trough top;

[0030] 2611, second curved surface; 231, first curved surface. Modes for Carrying Out the Invention

[0031] 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.

[0032] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0033] The present application may repeat reference numerals and / or reference letters in different embodiments. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0034] The present application provides a display panel, which includes: a light board and a color conversion layer arranged on the light board; wherein the color conversion layer includes: a first substrate and a second substrate arranged opposite to each other, and a buffer layer, a reflective layer and a color conversion unit arranged between the first substrate and the second substrate; wherein a plurality of the color conversion units are arranged between the first substrate and the second substrate at intervals, the buffer layer is arranged between any two adjacent color conversion units, and the reflective layer is arranged on the side of the color conversion unit and is located between the color conversion unit and the buffer layer; wherein the surface of the reflective layer close to the color conversion unit is a first curved surface, and the first curved surface protrudes from the color conversion unit toward the buffer layer; wherein the material of the color conversion unit includes: aerogel and quantum dots mixed in the aerogel.

[0035] In some embodiments, the aerogel comprises SiO aerogel, and the quantum dots comprise one or more of Group II-VII materials and Group III-VI materials.

[0036] In some embodiments, the materials of the first substrate and the second substrate are light-transmitting materials; the reflective layer includes: one or more of a silver reflective layer and a distributed Bragg reflective layer.

[0037] In some embodiments, the light board includes a driving substrate, a plurality of light-emitting units arranged on the driving substrate at intervals, and an encapsulation layer on the driving substrate arranged between any two adjacent light-emitting units; wherein the light-emitting unit includes a micro LED, and each of the color conversion units corresponds to one of the light-emitting units.

[0038] In some embodiments, the encapsulation layer includes one or more of a black colloid and a gray colloid.

[0039] In some embodiments, the color conversion layer is further provided with a plurality of grooves penetrating the buffer layer; wherein the color conversion unit is arranged in at least one of the grooves; wherein the surface of the reflective layer away from the color conversion unit is adhered to the groove wall of the groove.

[0040] In some embodiments, a groove wall of the groove is a second curved surface, and the second curved surface protrudes from the color conversion unit toward the buffer layer.

[0041] In some embodiments, on any cross section perpendicular to the first substrate, a width of a top of the groove is greater than a width of a bottom of the groove.

[0042] The present application provides a method for preparing a display panel, which includes the following steps: preparing a light board; preparing a color conversion layer, the color conversion layer including: a first substrate and a second substrate arranged opposite to each other, and a buffer layer, a reflective layer and a color conversion unit arranged between the first substrate and the second substrate; aligning, bonding and packaging the light board and the color conversion layer to form the display panel; wherein the step of preparing the color conversion layer includes: mixing quantum dots and aerogel to form quantum dot aerogel; preparing the buffer layer and a plurality of grooves penetrating the buffer layer on the first substrate, the groove walls of the grooves being second curved surfaces, the second curved surfaces protruding from the color conversion unit toward the buffer layer; preparing the reflective layer on the groove walls of at least one of the grooves, the surface of the reflective layer on the side close to the color conversion unit being a first curved surface, the first curved surface protruding from the color conversion unit toward the buffer layer; filling the quantum dot aerogel in at least one of the grooves to form the color conversion unit; and arranging the second substrate on the buffer layer, the reflective layer and the color conversion unit to form the color conversion layer.

[0043] The present application provides a display device comprising the display panel described herein or a display panel produced by the display panel production method described herein. The color conversion unit of the present application is made of aerogel and quantum dots mixed within the aerogel. The aerogel comprises SiO2 aerogel. The thermal insulation properties of SiO2 aerogel can effectively alleviate the problem of thermal lifetime degradation of quantum dots, thereby improving their reliability.

[0044] The present application sets a reflective layer on the side of the color conversion unit, and the reflective layer is located between the color conversion unit and the buffer layer; the surface of the reflective layer close to the color conversion unit is a first curved surface, and the first curved surface protrudes from the color conversion unit toward the buffer layer; the first curved surface of the reflective layer is used to reflect and converge the light irradiated on the reflective layer, thereby effectively improving the problem of quantum dot light mixing in adjacent color conversion units.

[0045] The present application prepares the light board and the color conversion layer separately, and then aligns, bonds and packages the light board and the color conversion layer with high precision to form the display panel, which can effectively improve the overall process yield and avoid affecting the performance of the light board during the preparation of the color conversion layer.

[0046] As shown in FIG1 to FIG9 , this embodiment provides a display panel 100 . The display panel 100 includes a light board 1 and a color conversion layer 2 .

[0047] The light board 1 includes a driving substrate 11 , a plurality of light-emitting units 12 and an encapsulation layer 13 .

[0048] The driving substrate 11 includes one of a TFT driving substrate and a CMOS driving substrate, and includes a plurality of driving devices (not shown).

[0049] A plurality of light-emitting units 12 are disposed on the driving substrate 11 at intervals. The light-emitting units 12 include micro LEDs. In this embodiment, the light-emitting units 12 are all blue micro LEDs.

[0050] The encapsulation layer 13 is disposed on the drive substrate 11 between any two adjacent light-emitting units 12. The encapsulation layer 13 comprises one or more of a black colloid and a gray colloid. In this embodiment, the gray colloid used for the encapsulation layer 13 reduces the background darkness of a black screen, making the light-emitting units appear darker, thereby improving the contrast and reliability of the display panel and enhancing the display consistency of the light-emitting units.

[0051] The color conversion layer 2 is disposed on the light board 1. Specifically, the color conversion layer 2 is disposed on the side of the encapsulation layer 13 away from the driving substrate 11. The color conversion layer 2 is mainly used to convert the color of the light emitted by the light-emitting unit 12 of the light board 1, thereby achieving color display.

[0052] The color conversion layer 2 includes a first substrate 21 , a buffer layer 22 , a reflective layer 23 , a color conversion unit 24 , a second substrate 25 and a plurality of grooves 26 .

[0053] The first substrate 21 is disposed on a side of the encapsulation layer 13 away from the driving substrate 11. The first substrate 21 is made of a light-transmitting material, thereby facilitating the light emitted by the light-emitting unit 12 to be transmitted out.

[0054] The buffer layer 22 is disposed on the first substrate 21. The material of the buffer layer 22 can be SiOx, SiNx, or a combination structure of Al2O3 / SiNx / SiOx, or a combination structure of SiOx / SiNx / SiOx.

[0055] As shown in Figures 1 and 6, the grooves 26 penetrate the buffer layer 22 in a direction perpendicular to the first substrate 21. Each groove 26 includes a groove bottom 262 and a groove top 263 arranged opposite to each other, and a groove wall 261 connecting the groove bottom 262 and the groove top 263. The groove bottom 262 of the groove 26 is flush with the surface of the first substrate 21 on the side close to the buffer layer 22, and the groove top 263 of the groove 26 is flush with the surface of the buffer layer 22 on the side away from the first substrate 21. The grooves 26 are arranged in a one-to-one correspondence with the light-emitting units 12. This facilitates the one-to-one correspondence between the color conversion units 24 formed later and the light-emitting units 12, allowing the color conversion units 24 to perform color conversion on the corresponding light-emitting units 12.

[0056] In any cross-section perpendicular to the first substrate 21, the width L1 of the top 263 of the groove 26 is greater than the width L2 of the bottom 262 of the groove 26. In other words, the groove 26 is larger at the top (farther from the first substrate 21) and smaller at the bottom (closer to the first substrate 21). This allows more light to escape from the top 263, improving the light utilization and brightness of the display panel. In this embodiment, the groove wall 261 of the groove 26 is a second curved surface 2611 that protrudes from the color conversion unit 24 toward the buffer layer 22, giving the groove 26 a lantern-like shape. As shown in Figure 2 , of the light emitted by the light-emitting unit 12, part of the light beam A directly penetrates the aerogel 241 and exits. Part of the light beam B strikes the quantum dots 242, is reflected by the quantum dots 242, and then strikes the reflective layer 23, where it is reflected by the reflective layer 23, resulting in the exit of light beam D. Part of the light beam E directly strikes the reflective layer 23, where it is reflected by the reflective layer 23, resulting in the exit of light beam F. This shows that this embodiment utilizes the reflective layer 23 to reflect and converge the light striking the reflective layer 23, thereby effectively alleviating the problem of light mixing between the quantum dots of adjacent color conversion units 24.

[0057] The color conversion unit 24 is disposed within at least one groove 26. In other words, the plurality of color conversion units 24 are spaced apart and disposed between the first substrate 21 and the second substrate 25, and the buffer layer 22 is disposed between any two adjacent color conversion units 24. The color conversion units 24 are made of aerogel 241 and quantum dots 242 mixed within the aerogel 241. The aerogel 241 comprises SiO2 aerogel.

[0058] In this embodiment, aerogel 241 is SiO2 aerogel. This is because SiO2 aerogel is a highly efficient, energy-saving thermal insulation material. It is a solid material prepared using a sol-gel method to form a nanoporous network structure, with the pores filled with a dispersion medium. SiO2 aerogel exhibits properties such as no convection effect (the aerogel pores are nanoscale, preventing air from flowing freely), an infinite baffle effect (nanoscale pores have infinite pore walls, minimizing radiative heat transfer), an infinite path effect (heat conduction occurs along the pore walls, and the nanoscale pore walls are infinitely long), and a low thermal conductivity of 0.012-0.024 (W / mK). Its thermal insulation principle lies in the uniform and dense nanopores and multi-level fractal pore microstructure, which effectively prevent air convection and reduce both thermal radiation and heat conduction. As shown in Table 1, the thermal conductivity of SiO2 aerogel is an order of magnitude lower than that of traditional thermal insulation materials (glass). This embodiment utilizes the thermal insulation properties of SiO2 aerogel to effectively improve the problem of quantum dot lifetime degradation caused by heat and enhance its reliability.

[0059] Table 1

[0060] Material Properties: Copper (Cu), Glass (Glass), SiO2 Aerogel; Thermal Conductivity (w / mk): 400; 0.712-1.340; 0.012; Expansion Coefficient (m / k): 1.7x10-5; 4.5x10-6; Density (kg / m3): 8.9x10kg; 2.4-2.83; Remarks: Porosity: 80-98.2%; Pore Size: 1-100nm

[0061] The quantum dots include one or more of Group II-VII materials and Group III-VI materials. Group II-VII materials include but are not limited to CdSe, CdS, and ZnSe, while Group III-VI materials include but are not limited to InP and InAs.

[0062] As shown in Figure 7, quantum dots 242 include red quantum dots 2421 and green quantum dots 2422. The red quantum dots 2421 and aerogel 241 form a red conversion unit that converts the blue light emitted by the light-emitting unit 12 into red light; the green quantum dots 2422 and aerogel 241 form a green conversion unit that converts the blue light emitted by the light-emitting unit 12 into green light.

[0063] The reflective layer 23 is disposed on the side of the color conversion unit 24 and is located between the color conversion unit 24 and the buffer layer 22. Specifically, the surface of the reflective layer 23 facing away from the color conversion unit 24 is in contact with the groove wall 261 of the groove 26. The surface of the reflective layer 23 facing the color conversion unit 24 is a first curved surface 231, which protrudes from the color conversion unit 24 toward the buffer layer 22. This first curved surface of the reflective layer 23 is used to reflect and converge light incident on the reflective layer 23, thereby effectively improving the problem of quantum dot light mixing between adjacent color conversion units 24.

[0064] The reflective layer 23 includes one or more of a silver reflective layer and a distributed Bragg reflector (DBR). In this embodiment, the reflective layer 23 is a silver reflective layer.

[0065] The second substrate 25 is disposed opposite to the first substrate 21, and the buffer layer 22, the reflective layer 23 and the color conversion unit 24 are disposed between the first substrate 21 and the second substrate 25. The second substrate 25 is made of a light-transmitting material, thereby facilitating the transmission of light emitted by the light-emitting unit 12.

[0066] This embodiment also provides a method for preparing the display panel of this embodiment, which includes the following steps: S1, preparing a light board 1; S2, preparing a color conversion layer 2, wherein the color conversion layer 2 includes: a first substrate 21 and a second substrate 25 arranged opposite each other, and a buffer layer 22, a reflective layer 23, and a color conversion unit 24 arranged between the first substrate 21 and the second substrate 25; S3, aligning, laminating, and encapsulating the light board 1 and the color conversion layer 2 to form the display panel 100. In this embodiment, the light board 1 and the color conversion layer 2 are prepared separately, and then the light board 1 and the color conversion layer 2 are aligned, laminating, and encapsulated with high precision to form the display panel 100. This can effectively improve the overall process yield and prevent the performance of the light board 1 from being affected by the preparation of the color conversion layer 2.

[0067] As shown in Figures 3, 4, and 5, S2 includes: S21, mixing quantum dots 242 with aerogel 241 to form a quantum dot aerogel. Specifically, a sol-gel method can be used to mix quantum dots 242 and aerogel 241 to form the quantum dot aerogel. Figure 3 shows aerogel 241 alone without quantum dots 242. Figure 4 shows aerogel 241 mixed with red quantum dots 2421. Figure 5 shows aerogel 241 mixed with green quantum dots 2422.

[0068] As shown in Figure 6, S2 also includes: S22, using coating, exposure, and development processes to prepare a buffer layer 22 and a plurality of grooves 26 passing through the buffer layer 22 on the first substrate 21, the groove wall 261 of the groove 26 is a second arc surface 2611, and the second arc surface 2611 protrudes from the color conversion unit 24 toward the buffer layer 22.

[0069] As shown in Figure 7, S2 further includes: S23, forming a reflective layer 23 on at least one groove wall 261 of at least one groove 26, wherein the surface of the reflective layer 23 on the side closest to the color conversion unit 24 is a first curved surface 231, and the first curved surface 231 protrudes from the color conversion unit 24 toward the buffer layer 22; S24, filling the at least one groove 26 with the quantum dot aerogel to form the color conversion unit 24; and S25, disposing a second substrate 25 on the buffer layer 22, the reflective layer 23, and the color conversion unit 24 to form the color conversion layer 2. Specifically, the reflective layer 23 is formed on at least one groove wall 261 of at least one groove 26 using a Wiener process, and the quantum dot aerogel is filled into the at least one groove 26 using an inkjet printing process to form the color conversion unit 24. The inkjet printing process can be a spray printing method or a droplet printing method. Specifically, the quantum dot aerogel mixed with the aerogel 241 in Figure 4 and the red quantum dots 2421 is filled in the groove 26 to form a red conversion unit; the quantum dot aerogel mixed with the aerogel 241 in Figure 5 and the green quantum dots 2422 is filled in the groove 26 to form a green conversion unit, and the aerogel in Figure 3 is filled in the groove 26 to transmit the blue light emitted by the light-emitting unit 12.

[0070] As shown in FIG8 , S1 includes: S11 , preparing a plurality of mutually spaced light-emitting units 12 on a driving substrate 11 .

[0071] As shown in FIG. 9 , S1 includes: S12 , preparing an encapsulation layer 13 on the driving substrate 11 between any two adjacent light-emitting units 12 .

[0072] This embodiment further provides a display device, which may include the display panel described above, or may include a display panel manufactured using the method for manufacturing the display panel described above.

[0073] The above is a detailed introduction to a display panel, a preparation method thereof, and a display device provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0074] In summary, although the present application is disclosed above with preferred embodiments, the above preferred embodiments are not intended to limit the present application. Ordinary technicians in this field can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the scope of protection of the present application is based on the scope defined by the claims.

Claims

1. A display panel, comprising: A light board (1) and a color conversion layer (2) arranged on the light board (1); The color conversion layer (2) comprises: a first substrate (21) and a second substrate (25) arranged opposite to each other, and a buffer layer (22), a reflective layer (23) and a color conversion unit (24) arranged between the first substrate (21) and the second substrate (25); The plurality of color conversion units (24) are arranged between the first substrate (21) and the second substrate (25) at intervals, the buffer layer (22) is arranged between any two adjacent color conversion units (24), and the reflective layer (23) is arranged on the side of the color conversion unit (24) and is located between the color conversion unit (24) and the buffer layer (22); Wherein, a surface of the reflective layer (23) on a side close to the color conversion unit (24) is a first curved surface (231), and the first curved surface (231) protrudes from the color conversion unit (24) toward the buffer layer (22); The material of the color conversion unit (24) includes: aerogel (241) and quantum dots (242) mixed in the aerogel (241).

2. The display panel according to claim 1, wherein: The aerogel (241) includes SiO2 aerogel, and the quantum dots (242) include: one or more of Group II-VII materials and Group III-VI materials.

3. The display panel according to claim 1, wherein: The reflective layer (23) comprises: one or more of a silver reflective layer (23) and a distributed Bragg reflective layer (23).

4. The display panel according to claim 1, wherein: The light board (1) comprises a driving substrate (11), a plurality of light-emitting units (12) arranged on the driving substrate (11) at intervals from each other, and a packaging layer (13) arranged on the driving substrate (11) between any two adjacent light-emitting units (12); The light-emitting unit (12) comprises a micro LED, and each of the color conversion units (24) corresponds to one of the light-emitting units (12).

5. The display panel according to claim 4, wherein: The encapsulation layer (13) comprises one or more of a black colloid and a grey colloid.

6. The display panel according to claim 1, wherein: The color conversion layer (2) is further provided with a plurality of grooves (26) penetrating the buffer layer (22); Wherein, the color conversion unit (24) is arranged in at least one of the grooves (26); Wherein, a surface of the reflective layer (23) on a side away from the color conversion unit (24) is attached to a groove wall (261) of the groove (26).

7. The display panel according to claim 6, wherein: The groove wall (261) of the groove (26) is a second curved surface (2611), and the second curved surface (2611) protrudes from the color conversion unit (24) toward the buffer layer (22).

8. The display panel according to claim 7, wherein: On any cross section perpendicular to the first substrate (21), the width of the groove top (263) of the groove (26) is greater than the width of the groove bottom (262) of the groove (26).

9. A method for preparing a display panel, comprising the following steps: Prepare a light board (1); A color conversion layer (2) is prepared, wherein the color conversion layer (2) comprises: a first substrate (21) and a second substrate (25) arranged opposite to each other, and a buffer layer (22), a reflective layer (23), and a color conversion unit (24) arranged between the first substrate (21) and the second substrate (25); Aligning, laminating and packaging the light panel (1) and the color conversion layer (2) to form the display panel; Wherein, the step of preparing the color conversion layer (2) comprises: mixing quantum dots (242) with aerogel (241) to form quantum dot aerogel; The buffer layer (22) and a plurality of grooves (26) penetrating the buffer layer (22) are prepared on the first substrate (21), wherein the groove wall (261) of the groove (26) is a second curved surface (2611), and the second curved surface (2611) protrudes from the color conversion unit (24) toward the buffer layer (22); The reflective layer (23) is prepared on a groove wall (261) of at least one of the grooves (26), wherein a surface of the reflective layer (23) on a side close to the color conversion unit (24) is a first curved surface (231), and the first curved surface (231) protrudes from the color conversion unit (24) toward the buffer layer (22); Filling the quantum dot aerogel in at least one of the grooves (26) to form the color conversion unit (24); The second substrate (25) is arranged on the buffer layer (22), the reflective layer (23) and the color conversion unit (24) to form the color conversion layer (2).

10. A display device, comprising a display panel, the display panel comprising a light board (1) and a color conversion layer (2) arranged on the light board (1); in, The color conversion layer (2) comprises: a first substrate (21) and a second substrate (25) arranged opposite to each other, and a buffer layer (22), a reflective layer (23) and a color conversion unit (24) arranged between the first substrate (21) and the second substrate (25); The plurality of color conversion units (24) are arranged between the first substrate (21) and the second substrate (25) at intervals, the buffer layer (22) is arranged between any two adjacent color conversion units (24), and the reflective layer (23) is arranged on the side of the color conversion unit (24) and is located between the color conversion unit (24) and the buffer layer (22); Wherein, a surface of the reflective layer (23) on a side close to the color conversion unit (24) is a first curved surface (231), and the first curved surface (231) protrudes from the color conversion unit (24) toward the buffer layer (22); The material of the color conversion unit (24) includes: aerogel (241) and quantum dots (242) mixed in the aerogel (241); Alternatively, the display panel is manufactured by the method for manufacturing a display panel according to claim 9.

11. The display device according to claim 10, wherein: The aerogel (241) includes SiO2 aerogel, and the quantum dots (242) include: one or more of Group II-VII materials and Group III-VI materials.

12. The display device according to claim 10, wherein: The reflective layer (23) comprises: one or more of a silver reflective layer (23) and a distributed Bragg reflective layer (23).

13. The display device according to claim 10, wherein: The light board (1) comprises a driving substrate (11), a plurality of light-emitting units (12) arranged on the driving substrate (11) at intervals from each other, and a packaging layer (13) arranged on the driving substrate (11) between any two adjacent light-emitting units (12); The light-emitting unit (12) comprises a micro LED, and each of the color conversion units (24) corresponds to one of the light-emitting units (12).

14. The display device according to claim 13, wherein: The encapsulation layer (13) comprises one or more of a black colloid and a grey colloid.

15. The display device according to claim 10, wherein: The color conversion layer (2) is further provided with a plurality of grooves (26) penetrating the buffer layer (22); Wherein, the color conversion unit (24) is arranged in at least one of the grooves (26); Wherein, a surface of the reflective layer (23) on a side away from the color conversion unit (24) is attached to a groove wall (261) of the groove (26).

16. The display device according to claim 15, wherein: The bottom (262) of the groove (26) is flush with the surface of the first substrate (21) on a side close to the buffer layer (22), and the top (263) of the groove (26) is flush with the surface of the buffer layer (22) on a side away from the first substrate (21).

17. The display device according to claim 15, wherein: The groove wall (261) of the groove (26) is a second curved surface (2611), and the second curved surface (2611) protrudes from the color conversion unit (24) toward the buffer layer (22).

18. The display device according to claim 17, wherein: On any cross section perpendicular to the first substrate (21), the width of the groove top (263) of the groove (26) is greater than the width of the groove bottom (262) of the groove (26).

19. The display device according to claim 10, wherein: The quantum dots (242) include red quantum dots (2421) and green quantum dots (2422).

20. The display device according to claim 10, wherein: The material of the buffer layer (22) may be SiOx or SiNx.

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