Display panel, preparation method thereof and display device

Abstract

The application discloses a display panel, a preparation method thereof and a display device. The display panel comprises an array substrate, a light emitting element layer and a first light regulation layer. The light emitting element layer is formed on one side of the array substrate and comprises a plurality of light emitting units. The first light regulation layer is formed on the side of the light emitting element layer away from the array substrate and comprises a first material layer and a second material layer. The first material layer comprises a first opening first accommodating portion opposite to the light emitting unit, and the second material layer is located in the first opening first accommodating portion. The outer diameter of the second material layer gradually decreases from the direction close to the array substrate to the direction away from the array substrate, and the refractive index of the second material layer is smaller than that of the first material layer. The display panel provided by the application improves the problem of high reflectivity of external light and the diffraction problem caused by the entry of external light, and helps to improve the user experience.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a display panel, a preparation method thereof and a display device. BACKGROUND

[0002] With the development of display technology, the performance requirements for display devices are getting higher and higher. The existing display panel has the problem of high reflectivity. External light rays are easily reflected by the film layer inside the display panel after being incident from the outside and then emitted from the light-emitting surface of the display panel, so that the reflectivity of the display panel is high, and the performance of the display panel is difficult to meet the requirements. SUMMARY

[0003] The embodiments of the present application provide a display panel, a preparation method thereof and a display device, which improve the problem of high reflectivity of external light rays by the display panel, especially in the dark state, and the diffraction problem caused by the incidence of external light rays, thereby helping to improve the user experience.

[0004] The embodiments of the first aspect of the present application provide a display panel, comprising:

[0005] an array substrate;

[0006] a light-emitting element layer formed on one side of the array substrate, comprising a plurality of light-emitting units;

[0007] a first light ray regulation layer formed on the side of the light-emitting element layer away from the array substrate, comprising a first material layer and a second material layer, the first material layer comprising a first accommodating portion opposite to the light-emitting unit, and the second material layer being located in the first accommodating portion;

[0008] wherein the outer diameter of the second material layer gradually decreases in the direction from the array substrate to the direction away from the array substrate, and the refractive index of the second material layer is less than the refractive index of the first material layer.

[0009] According to the embodiments of the first aspect of the present application, the display panel further comprises a second light ray regulation layer, the second light ray regulation layer being formed between the first light ray regulation layer and the light-emitting element layer, comprising an absorbing layer and a light filtering layer, the absorbing layer comprising a second accommodating portion opposite to the light-emitting unit, the light filtering layer being located in the second accommodating portion, and the refractive index of the second material layer being less than the refractive index of the light filtering layer.

[0010] According to any one of the preceding embodiments of the first aspect of the present application, the cross section of the second material layer in the thickness direction of the array substrate is trapezoidal;

[0011] Preferably, the base angle of the trapezoid is a, and 45°≤a≤75°.

[0012] According to any one of the foregoing embodiments of the first aspect of the present application, a cross section of the second material layer along a thickness direction of the array substrate is arc-shaped.

[0013] According to any one of the foregoing embodiments of the first aspect of the present application, a normal projection of the first accommodating portion on the second light regulation layer covers the second accommodating portion.

[0014] According to any one of the foregoing embodiments of the first aspect of the present application, a thickness of the second material layer is less than or equal to a thickness of the first material layer along a thickness direction of the array substrate.

[0015] According to any one of the foregoing embodiments of the first aspect of the present application, the second material layer is doped with scattering particles.

[0016] Preferably, the scattering particles can be at least one of inorganic nanoparticles, organic nanoparticles, titanium dioxide particles, and silicon dioxide particles.

[0017] According to any one of the foregoing embodiments of the first aspect of the present application, the second material layer is made of one of calcium fluoride, magnesium fluoride, and silicon oxide.

[0018] Embodiments of the second aspect of the present application also provide a manufacturing method of a display panel, characterized in that the method comprises:

[0019] forming a second material layer on a side of the luminescent material layer away from the array substrate, and patterning the second material layer so that the second material layer is opposite to a luminescent unit in the luminescent material layer, and an outer diameter of the second material layer gradually decreases from a direction close to the array substrate to a direction away from the array substrate;

[0020] forming a first material layer on the side of the luminescent material layer away from the array substrate, wherein a refractive index of the second material layer is less than a refractive index of the first material layer.

[0021] Embodiments of the second aspect of the present application also provide a display device comprising any one of the display panels provided by the first aspect of the present application.

[0022] The display panel provided in the application, the first light regulation layer comprises a first material layer and a second material layer, the second material layer is opposite to the light emitting unit, the first material layer is located around the second material layer, and the outer diameter of the second material layer gradually decreases from the direction close to the array substrate to the direction away from the array substrate, so that part of the external light first contacts the surface in the second material layer which is not parallel to the light emitting surface of the display panel when the external light is incident on the second material layer, at this time, because the refractive index of the second material layer is less than the refractive index of the first material layer, the part of the external light can be totally reflected, and the light after total reflection can change the propagation path without being incident into the light emitting element layer and the array substrate, so that the part of the external light can be prevented from being reflected after being incident on the light emitting unit and the array substrate. The display panel provided in the application changes the propagation path of part of the external light by arranging the first light regulation layer, so that the external light changes the propagation path after being reflected by the second material layer, improves the problem of high reflectivity of the display panel to the external light, especially in the dark state, and the diffraction problem caused by the incidence of the external light, which helps to improve the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments of the application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 is a structural schematic diagram of a display panel provided by the embodiments of the application;

[0025] Figure 2 is Figure 1 is a sectional view of A-A' in

[0026] Figure 3 is a structural schematic diagram of another display panel provided by the embodiments of the application;

[0027] Figure 4 is a partial top view of another display panel provided by the embodiments of the application;

[0028] Figure 5 is a partial top view of another display panel provided by the embodiments of the application;

[0029] Figure 6 is a partial top view of another display panel provided by the embodiments of the application;

[0030] Figure 7 is a structural schematic diagram of another display panel provided by the embodiments of the application;

[0031] Figure 8 isFigure 7 A local enlarged view of the middle P region;

[0032] Figure 9 is another flow chart of a display panel preparation method provided by the embodiments of the present application;

[0033] Figure 10 is a structural schematic diagram of a display device provided by the embodiments of the present application.

[0034] In the drawings:

[0035] 1 - display panel; 10 - array substrate; 11 - light emitting element layer; 120 - pixel definition layer; 110 - light emitting unit; 12 - first light control layer; 121 - first material layer; 122 - second material layer; 1221 - first accommodating portion; 13 - second light control layer; 131 - light absorbing layer; 1310 - second accommodating portion; 132 - light filtering layer; 14 - scattering particles; 15 - encapsulation layer; 2 - display device. DETAILED DESCRIPTION

[0036] Features and exemplary embodiments of various aspects of the present application will be described below in detail. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without some or all of these specific details. The description of the embodiments is merely to provide a better understanding of the present application by showing examples of the present application.

[0037] It should be noted that, in this document, the terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprises", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such a process, method, article, or apparatus. Without more limitations, the elements defined by the statement "comprise" do not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the elements.

[0038] The inventors have found that, due to the existence of the metal film layer in the display panel and the high reflectivity of the metal film layer, when external light enters the display panel from the outside, it is easily reflected by the film layer inside the display panel and exits from the light exit surface of the display panel, so that the reflectivity of the display panel is high, and the performance of the display panel is difficult to meet the requirements. Based on the research on the above problems, the inventors provide a display panel and a preparation method thereof and a display device to improve the reflectivity of the display panel.

[0039] In order to better understand the present application, the following will be combined with Figures 1 to 10 The display panel and the preparation method thereof and the display device according to the embodiments of the present application are described in detail.

[0040] Please refer to Figure 1 and Figure 2 The embodiments of the present application provide a display panel 1, which comprises an array substrate 10, a light emitting element layer 11 and a first light adjusting layer 12. The light emitting element layer 11 is formed on one side of the array substrate 10 and comprises a plurality of light emitting units 110. The first light adjusting layer 12 is formed on the side of the light emitting element layer 11 away from the array substrate 10 and comprises a first material layer 121 and a second material layer 122. The first material layer 121 comprises a first accommodating portion 1221 opposite to the light emitting unit 110, and the second material layer 122 is located in the first accommodating portion 1221. Wherein, the outer diameter of the second material layer 122 gradually decreases from the direction close to the array substrate 10 to the direction away from the array substrate 10, and the refractive index of the second material layer 122 is less than the refractive index of the first material layer 121.

[0041] In the display panel 1 provided by the present application, the first light adjusting layer 12 comprises the first material layer 121 and the second material layer 122, the second material layer 122 is opposite to the light emitting unit 110, the first material layer 121 is located around the second material layer 122, and the outer diameter of the second material layer 122 gradually decreases from the direction close to the array substrate 10 to the direction away from the array substrate 10, so that part of the external light first contacts the surface of the second material layer 122 which is not parallel to the light exit surface of the display panel 1 when the external light is incident on the second material layer 122. At this time, since the refractive index of the second material layer 122 is less than the refractive index of the first material layer 121, the part of the external light can be totally reflected, and the part of the light after total reflection can change the propagation path without entering the light emitting element layer 11 and the array substrate 10, so as to prevent the part of the external light from being reflected after being incident on the light emitting unit 110 and the array substrate 10. The display panel 1 provided by the present application changes the propagation path of part of the external light by setting the first light adjusting layer 12, so that the external light changes the propagation path after being reflected by the second material layer 122, improves the problem of high reflectivity of the display panel 1 to the external light, especially in the dark state, and the diffraction problem caused by the incidence of the external light, which helps to improve the user experience.

[0042] The light emitting element layer 11 includes a plurality of light emitting units 110, which can include red light emitting units 110, green light emitting units 110, blue light emitting units 110, and white light emitting units 110, and the like, without particular limitation.

[0043] The light emitting unit 110 includes a first electrode on the array substrate 10, a light emitting material layer on a side of the first electrode facing away from the array substrate 10, and a second electrode on a side of the light emitting material layer facing away from the array substrate 10. The light emitting element layer 11 further includes a pixel defining layer 120, which includes a plurality of pixel openings, each of which is configured to expose one first electrode, and the light emitting material layer is located in the pixel opening. The first electrode can be an anode, and the second electrode can be a cathode, or the first electrode can be a cathode, and the second electrode can be an anode, without particular limitation. The first electrode and / or the second electrode are prone to reflecting light incident thereon, and the reflected light is emitted from the light emitting surface of the display panel 1, thereby affecting the light emitting effect of the display panel 1. The film layer prone to the above-mentioned reflection also includes a metal film layer on the array substrate 10.

[0044] In the display panel, the first material layer 121 includes a first accommodating portion 1221 opposite to the light emitting unit 110, specifically, a normal projection of the first accommodating portion 1221 on the array substrate 10 at least partially overlaps with a normal projection of the light emitting unit 110 on the array substrate 10. Specifically, the normal projection of the first accommodating portion 1221 on the array substrate 10 can cover the normal projection of the light emitting unit 110 on the array substrate 10, thereby increasing the regulation range of the second material layer 122 in the first accommodating portion 1221 to the external light, so as to better regulate the light that is intended to be emitted from the pixel opening to the light emitting unit 110 and the array substrate 10.

[0045] In the display panel 1, the outer diameter of the second material layer 122 gradually decreases in a direction from the array substrate 10 to a direction away from the array substrate 10, specifically, the outer diameter of the second material layer 122 is the diameter of a circumscribed circle of the second material layer 122 along a cross section parallel to the light emitting surface of the display panel 1. The outer diameter of the second material layer 122 gradually decreases, so that at least part of the side surface of the second material layer 122 towards the light emitting surface of the display panel 1 can form a surface for receiving external light, and the surface is not parallel to the light emitting surface of the display panel 1, so that part of the external light can change the propagation path after total reflection on the surface, without entering the light emitting element layer 11 and the array substrate 10.

[0046] In a possible implementation, as Figure 3As shown, the display panel 1 further comprises a second light regulation layer 13, which is formed between the first light regulation layer 12 and the light emitting element layer 11, and comprises a light absorbing layer 131 and a light filtering layer 132. The light absorbing layer 131 comprises a second accommodating portion 1310 opposite to the light emitting unit 110, and the light filtering layer 132 is located in the second accommodating portion 1310. The refractive index of the second material layer 122 is less than the refractive index of the light filtering layer 132.

[0047] In the above embodiment, the second light regulation layer 13 comprises the light absorbing layer 131 and the light filtering layer 132. The light filtering layer 132 is arranged opposite to the light emitting unit 110, which helps to improve the purity of the light emitted by the light emitting unit 110, thereby improving the display quality. The light absorbing layer 131 is arranged opposite to the region between the adjacent light emitting units 110, which helps to prevent light from different color light emitting units 110 from mixing. The refractive index of the second material layer 122 is less than the refractive index of the light filtering layer 132, so that the light reflected by the first electrode, and / or the second electrode, and / or the film layer in the array substrate 10 can satisfy the total reflection condition when it is incident on the second material layer 122 from the light filtering layer 132, i.e., the light reflected by the first electrode, and / or the second electrode, and / or the film layer in the array substrate 10 can be totally reflected at the surface where the light filtering layer 132 contacts the second material layer 122, thereby changing its propagation direction and preventing it from being emitted from the light emitting surface of the display panel 1, thereby improving the dark state reflection phenomenon of the display panel 1. The color of the light filtering layer 132 in the second light regulation layer 13 needs to be the same as the color of the light emitted by the light emitting unit 110, so as to filter the light emitted by the light emitting unit 110 and make the light emitted more pure. The light filtering layer 132 opposite to the red light emitting unit 110 can be a red filter, the light filtering layer 132 opposite to the green light emitting unit 110 can be a green filter, the light filtering layer 132 opposite to the blue light emitting unit 110 can be a blue filter, and the light filtering layer 132 opposite to the white light emitting unit 110 can be a colorless and transparent film layer.

[0048] In the above embodiment, the light absorbing layer 131 comprises the second accommodating portion 1310 opposite to the light emitting unit 110, and specifically, the orthographic projection of the second accommodating portion 1310 on the array substrate 10 at least partially overlaps the orthographic projection of the light emitting unit 110 on the array substrate 10. Specifically, the orthographic projection of the second accommodating portion 1310 on the array substrate 10 can cover the orthographic projection of the light emitting unit 110 on the array substrate 10, thereby increasing the regulation range of the light filtering layer in the second accommodating portion on the light emitted by the light emitting unit 110, so as to better filter the light emitted by the light emitting unit 110 and improve the light emitting purity of the display panel.

[0049] In a feasible embodiment, as shown in Figure 3 The cross section of the second material layer 122 along the thickness direction of the array substrate 10 is a trapezoid.

[0050] In the above embodiment, the surface where the waist line of the trapezoid is located is the surface for receiving external light, and when the external light is incident on the surface, the external light is totally reflected on the surface due to the refractive index of the first material layer 121 being greater than the refractive index of the second material layer 122, and the propagation direction of the light is changed after the total reflection, so that the light is not incident on the light emitting unit 110 and the array substrate 10 through the second material layer 122, thereby preventing the first electrode and / or the second electrode of the light emitting unit 110 and the metal film layer in the array substrate 10 from reflecting the light.

[0051] Specifically, the base angle of the trapezoid is a, and 45°≤a≤75°, and specifically can be 45°, 47°, 48°, 50°, 54°, 66°, 71°, 75°, etc. The application is not particularly limited. The base angle a of the trapezoid is set to 45° to 75°, so that the surface where the waist line of the trapezoid is located can better receive external light, improve the total reflection efficiency of the second material layer 122 on the external light, and further reduce the amount of external light incident on the light emitting unit 110 and the array substrate 10, thereby further reducing the occurrence of reflection and diffraction of external light by the display panel 1.

[0052] In the above embodiment, the cross section of the second material layer 122 along the thickness direction of the array substrate 10 can be partially trapezoidal or entirely trapezoidal. When the top view of the second material layer 122 is as shown in FIG. 11A, the cross section of the second material layer 122 along the thickness direction of the array substrate 10 is partially trapezoidal, and specifically, the cross section parallel to the first direction x in the cross section along the thickness direction of the array substrate 10 is trapezoidal, and the cross section parallel to the second direction y is rectangular. The first direction x and the second direction y are both parallel to the direction of the light exit surface of the display panel 1, and the first direction x intersects the second direction y. When the cross section of the second material layer 122 along the thickness direction of the array substrate 10 is entirely trapezoidal, the second material layer 122 can be a circular truncated cone (as shown in FIG. 11B) or a quadrangular truncated cone (as shown in FIG. 11C), and the application is not particularly limited. Figure 4 Figure 5 Figure 6

[0053] In another possible embodiment, as shown in FIG. 12, the cross section of the second material layer 122 along the thickness direction of the array substrate 10 is arched. Figure 7

[0054] ​​​​In the above embodiment, the surface of the second material layer 122 used to receive external light is arc-shaped. When external light shines on this arc-shaped surface, since the refractive index of the first material layer 121 is greater than that of the second material layer 122, the external light is totally reflected at this surface. After total reflection, the direction of light propagation is changed, preventing it from entering the light-emitting unit 110 and the array substrate 10 via the second material layer 122. This prevents the first electrode and / or the second electrode of the light-emitting unit 110 and the metal film layer in the array substrate 10 from reflecting it. Furthermore, due to the gradual change in curvature of the arc-shaped surface, it can receive external light from more angles and cause it to be totally reflected.

[0055] In one feasible implementation, the orthographic projection of the first receiving portion 1221 onto the first light control layer 12 covers the second receiving portion 1310.

[0056] In the above embodiment, the orthogonal projection of the first receiving portion 1221 on the first light control layer 12 covers the second receiving portion 1310, thereby causing the orthogonal projection of the second material layer 122 located in the first receiving portion 1221 on the first light control layer 12 to cover the filter layer 132 in the second receiving portion 1310. This allows the second material layer 122 to cover the filter layer 132, preventing external light from directly hitting the filter layer 132 and entering the light-emitting unit 110 and the array substrate 10.

[0057] In one feasible implementation, the thickness of the second material layer 122 is less than or equal to the thickness of the first material layer 121 along the thickness direction of the array substrate 10.

[0058] In the above embodiments, the second material layer 122 and the first material layer 121 are set to have the same thickness, or the thickness of the second material layer 122 is less than the thickness of the first material layer 121. This allows for a higher utilization rate of the surface of the second material layer 122 used to receive external light. At the same time, setting the second material layer 122 and the first material layer 121 to have the same thickness can also ensure the flatness of the surface of the second light control layer 13 facing away from the array substrate 10, so as to facilitate the subsequent preparation of the film layer.

[0059] In one feasible implementation, such as Figure 8 As shown, the second material layer 122 is doped with scattering particles 14, which allows the portion of external light entering the second material layer 122 to be scattered by the scattering particles 14, thereby changing its propagation direction and reducing the amount of light entering the light-emitting unit 110 and the array substrate 10, so as to further improve the phenomenon of the display panel 1 reflecting external light.

[0060] Specifically, the material of the scattering particles 14 can be at least one of inorganic nanoparticles, organic nanoparticles, titanium dioxide particles, and silicon dioxide particles, and can also be other particle materials with high transmittance and capable of causing light scattering, which are not particularly limited in the present application.

[0061] In an embodiment, the second material layer 122 is made of one of calcium fluoride, magnesium fluoride, and silicon oxide. The second material layer 122 can also be made of other materials with high transmittance and a refractive index lower than that of the first material layer 121, which are not particularly limited in the present application.

[0062] In an embodiment, the light-emitting element layer 11 and the second light control layer 13 are further provided with an encapsulation layer 15. The encapsulation layer 15 includes a stacked organic material layer and an inorganic material layer. The inorganic material layer can isolate water and oxygen, preventing water and oxygen from entering the inside of the light-emitting unit 110 and affecting the display effect. The organic material layer can improve the flatness and bending performance of the encapsulation layer 15.

[0063] In an embodiment, in the second light control layer 13, the outer diameter of the second accommodating portion 1310 gradually increases from the direction close to the array substrate 10 to the direction away from the array substrate 10, thereby facilitating the emission of light from the light-emitting unit 110 and improving the display quality.

[0064] The present application also provides a preparation method of the display panel 1, as shown in Figure 9 The preparation method includes the following steps:

[0065] S100, forming a second material layer 122 on the side of the light-emitting material layer away from the array substrate 10, and patterning the second material layer 122 so that the second material layer 122 is opposite to the light-emitting unit 110 in the light-emitting material layer, and the outer diameter of the second material layer 122 gradually decreases from the direction close to the array substrate 10 to the direction away from the array substrate 10.

[0066] S200, forming a first material layer 121 on the side of the light-emitting material layer away from the array substrate 10, wherein the refractive index of the second material layer 122 is lower than that of the first material layer 121.

[0067] Specifically, the second material layer 122 can be formed by deposition, and the patterning process of the second material layer 122 can be dry etching or wet etching. Meanwhile, the first material layer 121 can be formed by deposition, and the material of the first material layer 121 can be organic glue. On the one hand, the refractive index of the first material layer 121 is greater than the refractive index of the second material layer 122, so that the external light can be totally emitted at the surface where the first material layer 121 and the second material layer 122 contact. On the other hand, the first material layer 121 can play a buffering role to protect the display panel 1. On the other hand, the first material layer 121 also plays a planarization role, so that the surface of the first light control layer 12 away from the array substrate 10 is a flat surface, facilitating the preparation of subsequent film layers.

[0068] Before step S100, a second light control layer 13 can also be formed on the side of the light emitting element layer 11 away from the array substrate 10, specifically including: forming an absorbing material layer on the side of the light emitting element layer 11 away from the array substrate 10, and patterning the absorbing material layer to form a plurality of first accommodating portions 1221 opposite the light emitting units 110 in the light emitting material layer, thereby forming an absorbing layer 131, and forming a light filtering layer 132 in the first accommodating portion 1221.

[0069] The material of the absorbing material layer can be dark photoresist, for example, black photoresist. At this time, patterning the absorbing material layer includes: forming a second accommodating portion 1310 opposite the light emitting unit 110 in the absorbing material layer by photolithography technology. By using photoresist material, the preparation process of patterning can be simplified, and the preparation efficiency can be improved.

[0070] The preparation method of the display panel 1 has simple preparation process and low material cost, and the display panel 1 prepared by the preparation method can improve the phenomenon of dark state reflection and improve the user experience of the display panel 1.

[0071] The application also provides a display device 2, as shown in the figure, comprising any one of the display panels 1 provided by the application. Figure 10

[0072] The display device 2 has high light output purity and the phenomenon of reflecting external light in dark state is obviously improved, so that the performance of the display device 2 is better, and has wide application prospect.

[0073] The display device 2 can be a mobile terminal such as a mobile phone or a tablet computer, can also be a fixed terminal such as a television or a display, or can be a wearable device such as a watch, and the application does not make special limitation.

[0074] ​In accordance with the embodiments of the application described above, these embodiments are not meant to be exhaustive or limiting of the application. Many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the above teachings. Accordingly, the scope of the present application should be determined not with reference to the above description, but with reference to the appended claims along with their full scope of equivalents.

Claims

1. A display panel, characterized by, The application relates to a light-emitting device, comprising: an array substrate; a light-emitting element layer formed on one side of the array substrate and comprising a plurality of light-emitting units; a first light control layer formed on the side of the light-emitting element layer away from the array substrate and comprising a first material layer and a second material layer, the first material layer comprising a first accommodating portion opposite to the light-emitting units, and the second material layer being located in the first accommodating portion; a second light control layer formed between the first light control layer and the light-emitting element layer and comprising an absorbing layer and a filtering layer, the absorbing layer comprising a second accommodating portion opposite to the light-emitting units, and the filtering layer being located in the second accommodating portion, the refractive index of the second material layer being smaller than that of the filtering layer, the orthogonal projection of the second material layer on the array substrate covering the orthogonal projection of the filtering layer on the array substrate, and the outer diameter of the second accommodating portion gradually increasing from the direction close to the array substrate to the direction away from the array substrate; a packaging layer arranged between the light-emitting element layer and the second light control layer, wherein the outer diameter of the second material layer gradually decreases from the direction close to the array substrate to the direction away from the array substrate, and the refractive index of the second material layer is smaller than that of the first material layer.

2. The display panel of claim 1, wherein, The cross section of the second material layer along the thickness direction of the array substrate is trapezoidal.

3. The display panel of claim 2, wherein, The bottom angle of the trapezoid is a, and 45 DEG <= a <= 75 DEG.

4. The display panel of any one of claims 1 to 3, wherein, The cross section of the second material layer along the thickness direction of the array substrate is arc-shaped.

5. The display panel of any one of claims 1 to 3, wherein, The orthogonal projection of the first accommodating portion on the second light control layer covers the second accommodating portion.

6. The display panel of any one of claims 1 to 3, wherein, The thickness of the second material layer is smaller than or equal to the thickness of the first material layer along the thickness direction of the array substrate.

7. The display panel of any one of claims 1 to 3, wherein, The second material layer is doped with scattering particles.

8. The display panel of claim 7, wherein, The material of the scattering particles is at least one of inorganic nanoparticles, organic nanoparticles, titanium dioxide particles and silicon dioxide particles.

9. The display panel of any one of claims 1 to 3, wherein, The material of the second material layer is one of calcium fluoride, magnesium fluoride and silicon oxide.

10. A method for manufacturing a display panel, characterized by, The application relates to a light-emitting device, comprising: forming a packaging layer on the side of a light-emitting material layer away from an array substrate; forming a second light control layer on the side of the packaging layer away from the array substrate, the second light control layer comprising an absorbing layer and a filtering layer, the absorbing layer comprising a second accommodating portion opposite to the light-emitting units in the light-emitting material layer, and the filtering layer being located in the second accommodating portion, the outer diameter of the second accommodating portion gradually increasing from the direction close to the array substrate to the direction away from the array substrate; forming a second material layer on the side of the second light control layer away from the array substrate, and patterning the second material layer so that the second material layer is opposite to the light-emitting units in the light-emitting material layer, the orthogonal projection of the second material layer on the array substrate covering the orthogonal projection of the filtering layer on the array substrate, and the outer diameter of the second material layer gradually decreasing from the direction close to the array substrate to the direction away from the array substrate. A first material layer is formed on a side of the second light regulation layer facing away from the array substrate, wherein the refractive index of the second material layer is less than the refractive index of the first material layer, and the refractive index of the second material layer is less than the refractive index of the light filtering layer.

11. A display device, characterized by comprising: The display panel of any one of claims 1-9.

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