Display substrate, display panel and manufacturing method therefor, and display device

Abstract

Disclosed are a display substrate, a display panel and a manufacturing method therefor, and a display device. The display substrate comprises: a first substrate; a pixel definition layer disposed on the first substrate, the pixel definition layer having a plurality of pixel openings; a plurality of light emitting devices corresponding to the pixel openings one by one, the light emitting device comprising a first electrode and a light emitting functional layer, the first electrode being located between the pixel definition layer and the first substrate, the first electrode comprising a main body portion exposed by the pixel opening; the light emitting functional layer being located in the pixel opening and on a side of the main body portion away from the first substrate, at least a portion of the light emitting functional layer being opposite to the main body portion, the portion of the light emitting functional layer opposite to the main body portion being a curved film layer protruding towards the first substrate.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, specifically to a display substrate, a display panel, a method for manufacturing the same, and a display device. Background Technology

[0002] The display architecture that combines quantum dot layers with OLED (Organic Light-Emitting Diode) can achieve a higher color gamut, higher resolution, and wider viewing angle, making it suitable for large-size self-emissive display technologies. Summary of the Invention

[0003] This disclosure provides a display substrate, a display panel, a method for manufacturing the same, and a display device.

[0004] In a first aspect, embodiments of this disclosure provide a display substrate, comprising:

[0005] First substrate;

[0006] A pixel defining layer disposed on the first substrate, the pixel defining layer having a plurality of pixel openings;

[0007] A plurality of light-emitting devices are provided, each corresponding to a pixel opening. Each light-emitting device includes a first electrode and a light-emitting functional layer. The first electrode is located between the pixel defining layer and the first substrate, and includes a main body portion exposed by the pixel opening. The light-emitting functional layer is located in the pixel opening and on the side of the main body portion away from the first substrate. At least a portion of the light-emitting functional layer is directly opposite the main body portion, and the portion of the light-emitting functional layer directly opposite the main body portion is a curved film layer protruding toward the first substrate.

[0008] In some embodiments, the display substrate further includes an insulating layer located between the pixel defining layer and the first substrate, and the insulating layer has a recess at a position corresponding to the pixel opening;

[0009] Both the main body and the light-emitting functional layer are located in the recess.

[0010] In some embodiments, the recessed inner surface is an arc-shaped surface, and the angle between the line connecting the center to the edge of the inner surface and the thickness direction of the display substrate is greater than 120°.

[0011] In some embodiments, the orthogonal projection of the light-emitting functional layer on the first substrate lies within the orthogonal projection range of the recess on the first substrate.

[0012] In some embodiments, the light-emitting device further includes a second electrode located on the side of the light-emitting functional layer away from the first substrate;

[0013] The display substrate further includes:

[0014] A thin-film transistor is located between the insulating layer and the first substrate, and the first electrode is connected to the thin-film transistor through a via in the insulating layer.

[0015] An encapsulation layer that covers the pixel defining layer and the light-emitting device.

[0016] Secondly, embodiments of this disclosure also provide a display panel, including:

[0017] In the aforementioned display substrate, the light-emitting device is configured to emit light of a preset color;

[0018] The color conversion layer located on the light-emitting side of the display substrate includes multiple repeating units, each repeating unit includes multiple light-emitting parts, each light-emitting device corresponds to one light-emitting part, and the light-emitting part is configured to receive the light emitted by the corresponding light-emitting device and emit light that is the same as or different from the preset color.

[0019] In some embodiments, the preset color is blue, and the plurality of light-emitting parts in the same repeating unit include: a red light-emitting part, a green light-emitting part, and a blue light-emitting part. The material of the red light-emitting part includes red quantum dot material, the material of the green light-emitting part includes green quantum dot material, and the material of the blue light-emitting part includes scattering particle material.

[0020] In some embodiments, the surface of the light-emitting portion away from the display substrate is convex.

[0021] In some embodiments, the light-emitting side of the display substrate is further provided with a receiving structure layer, the receiving structure layer having a plurality of receiving grooves, each receiving groove corresponding to a light-emitting device, and the light-emitting part being disposed in the receiving groove.

[0022] In some embodiments, the portion of the accommodating structure layer that contacts the light-emitting portion is made of a hydrophobic material.

[0023] In some embodiments, the display panel further includes:

[0024] A color filter layer is located on the side of the color conversion layer away from the display substrate. The color filter layer includes a plurality of color filter sections, each of which corresponds to a light emitting section. The color of each color filter section is the same as the color of the light emitted by the corresponding light emitting section.

[0025] The black matrix is ​​located between the accommodating structure layer and the display substrate, or on the side of the color conversion layer away from the display substrate; wherein at least a portion of the light-emitting portion has an orthographic projection on the first substrate that does not overlap with the orthographic projection of the black matrix on the first substrate.

[0026] Thirdly, this disclosure also provides a method for manufacturing a display panel, comprising: manufacturing a display substrate, wherein the step of manufacturing the display substrate includes:

[0027] A first electrode for a plurality of light-emitting devices is formed on a first substrate, the first electrode including a main body portion;

[0028] A pixel defining layer is formed, the pixel defining layer having a plurality of pixel openings, the first electrode corresponding one-to-one with the pixel openings, and the main body being exposed by the pixel openings;

[0029] A plurality of light-emitting functional layers are formed for the light-emitting devices. The light-emitting functional layers are located in the pixel opening and on the side of the main body away from the first substrate. At least a portion of the light-emitting functional layers is directly opposite the main body. The portion of the light-emitting functional layers directly opposite the main body is a curved film layer protruding toward the first substrate.

[0030] The method for manufacturing the display panel further includes:

[0031] A color conversion layer is formed on the light-emitting side of the display substrate. The color conversion layer includes multiple repeating units, each of which includes multiple light-emitting sections. Each light-emitting device corresponds to one light-emitting section. The light-emitting section is configured to receive the light emitted by the corresponding light-emitting device and emit light that is the same as or different from the preset color.

[0032] In some embodiments, the step of manufacturing the display substrate further includes:

[0033] Before forming the first electrode of multiple light-emitting devices, an insulating layer is formed on the first substrate, and a recess is formed on the insulating layer corresponding to the position of the pixel opening;

[0034] Both the main body and the light-emitting functional layer are located in the recess.

[0035] In some embodiments, a color conversion layer is formed on the light-emitting side of the display substrate, comprising:

[0036] A receiving structure layer is formed on the light-emitting side of the display substrate. The receiving structure layer has a plurality of receiving slots, and each receiving slot corresponds to a light-emitting device.

[0037] The light-emitting part is formed in each receiving slot using inkjet printing;

[0038] The preset color is blue, and the multiple light-emitting parts in the same repeating unit include: a red light-emitting part, a green light-emitting part, and a blue light-emitting part; the material of the red light-emitting part includes red quantum dot material, the material of the green light-emitting part includes green quantum dot material, and the material of the blue light-emitting part includes scattering particle material.

[0039] In some embodiments, the accommodating structure layer is made of a hydrophobic material so that the surface of the light-emitting portion away from the display substrate is formed as a convex surface.

[0040] In some embodiments, a color conversion layer is formed on the light-emitting side of the display substrate, comprising:

[0041] A accommodating structure layer is formed on a second substrate. The accommodating structure layer has a plurality of accommodating grooves, and each accommodating groove corresponds to a light-emitting device.

[0042] A light-emitting section is formed in each receiving slot using inkjet printing; wherein, the preset color is blue, and the multiple light-emitting sections in the same repeating unit include: a red light-emitting section, a green light-emitting section, and a blue light-emitting section; the material of the red light-emitting section includes red quantum dot material, the material of the green light-emitting section includes green quantum dot material, and the material of the blue light-emitting section includes scattering particle material;

[0043] The second substrate is aligned with the display substrate, and the light-emitting part is aligned with the corresponding light-emitting device.

[0044] Fourthly, embodiments of this disclosure also provide a display device, including the display panel described above. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0046] Figure 1 This is a schematic diagram of a display panel provided in a pair of proportions.

[0047] Figure 2 This is a graph showing the light field distribution of the light-emitting device.

[0048] Figure 3A This is a plan view of a display substrate provided in some embodiments of this disclosure.

[0049] Figure 3B For along Figure 3A A cross-sectional view of line A-A' in the middle.

[0050] Figure 4This is a schematic diagram of the shape of the recess provided in an embodiment of this disclosure.

[0051] Figure 5 The light-emitting devices in the display substrate provided in the embodiments of this disclosure and Figure 1 A comparison of the light field distribution of the light-emitting devices in the diagram.

[0052] Figure 6 This is a schematic diagram of a display panel provided in some embodiments of the present disclosure.

[0053] Figure 7 This is a schematic diagram of the reflectivity curves of the two types of containment structure layers provided in the embodiments of this disclosure.

[0054] Figure 8 This is a schematic diagram showing the brightness distribution curves of light from a test light source before and after passing through a convex lens.

[0055] Figure 9 This is a schematic diagram of a display panel provided in some other embodiments of this disclosure.

[0056] Figure 10 This is a schematic diagram showing the relationship between the intensity of light from a test light source and the viewing angle after passing through different structures.

[0057] Figure 11 A flowchart illustrating a method for manufacturing a display panel according to an embodiment of this disclosure.

[0058] Figure 12 This is a flowchart of an optional implementation of step S10.

[0059] Figures 13A to 13C This is a schematic diagram illustrating the process of fabricating an insulating layer with recesses, provided in some embodiments of this disclosure.

[0060] Figures 14 to 15 This is a schematic diagram of step S20 provided in some embodiments of this disclosure.

[0061] Figures 16A to 16C This is a schematic diagram of step S20 provided in some other embodiments of this disclosure. Detailed Implementation

[0062] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0063] The terminology used herein to describe embodiments of this disclosure is not intended to limit and / or restrict the scope of this disclosure. For example, unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. It should be understood that the terms “first,” “second,” and similar terms used herein do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Unless the context clearly indicates otherwise, the singular forms “an,” “a,” or “the,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as “comprising” or “including” mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0064] In the following description, when an element or layer is referred to as "on" or "connected to" another element or layer, the element or layer may be directly on or directly connected to the other element or layer, or there may be intermediate elements or intermediate layers. However, when an element or layer is referred to as "directly on" or "directly connected to" another element or layer, there are no intermediate elements or intermediate layers. The term "and / or" includes any and all combinations of one or more of the related listed items.

[0065] Figure 1 This is a schematic diagram of a display panel provided in a pair of proportions. Figure 1 The arrows in the diagram represent rays of light. For example... Figure 1As shown, the display panel includes a red sub-pixel area R, a green sub-pixel area G, and a blue sub-pixel area B. The display panel includes multiple light-emitting devices 11 emitting blue light disposed on a substrate 10. Additionally, the display panel includes multiple light-emitting sections, specifically: a red light-emitting section 14r corresponding to the red sub-pixel area R, a green light-emitting section 14g corresponding to the green sub-pixel area G, and a blue light-emitting section 14b corresponding to the blue sub-pixel area B. The red light-emitting section 14r and the green light-emitting section 14g can both utilize quantum dot layers, while the blue light-emitting section 14b can utilize a scattering particle layer. During display, the light-emitting devices 11 emit light; the red light-emitting section 14r emits red light when excited by blue light, the green light-emitting section 14g emits green light when excited by blue light, and the blue light-emitting section 14b of the blue sub-pixel area B directly transmits blue light. This generates the three primary colors: red, green, and blue. Note that the light emitted by the light-emitting devices 11 is not entirely collimated; some light rays are emitted at large angles. Figure 2 The graph shows the light field distribution of the light-emitting device. The vertical axis represents the ratio of the actual light intensity to the central light intensity; the horizontal axis represents the light emission angle, i.e., the angle between the light emission direction and the thickness direction of the display panel. It can be seen that the light-emitting device produces a relatively strong light intensity when the light emission angle is around 60°. In addition, since there are encapsulation layer 12, filling layer 13 and other structures between the light-emitting device 11 and the filter part, the light emitted by the light-emitting device 11 will not only illuminate its corresponding light-emitting part, but also illuminate adjacent light-emitting parts, resulting in color cross-contamination between different sub-pixel areas.

[0066] Figure 3A This is a plan view of a display substrate provided in some embodiments of this disclosure. Figure 3B For along Figure 3A A cross-sectional view along line A-A', showing that this display substrate can be used in a display panel with a color conversion layer. (Example) Figure 3A As shown, the display substrate includes multiple sub-pixel regions P. Figure 3B As shown, the display substrate may include: a first substrate 21, a pixel delimiting layer (PDL), and a plurality of light-emitting devices 23, with each light-emitting device 23 corresponding to a sub-pixel area.

[0067] The first substrate 21 can be a glass substrate or a flexible substrate made of a flexible material such as polyimide (PI), which is beneficial for realizing flexible displays.

[0068] The pixel defining layer PDL is located on the side of the insulating layer away from the first substrate 21. The pixel defining layer PDL has multiple pixel openings located in the sub-pixel region P.

[0069] Each light-emitting device 23 corresponds to a pixel opening. Each light-emitting device 23 includes a first electrode 231, a second electrode 232, and a light-emitting functional layer 233 located between the first electrode 231 and the second electrode 232. For example, the first electrode 231 is an anode, and the second electrode 232 is a cathode. Optionally, the first electrode 231 is a reflective electrode made of a metallic material, and the second electrode 232 is a transparent electrode made of a transparent conductive material (e.g., indium tin oxide). The light-emitting functional layer 233 may include, in sequence, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. The first electrode 231 is located between the pixel defining layer (PDL) and the first substrate 21, with the main body portion 231a exposed by the pixel opening. The light-emitting functional layer 233 is located in the pixel opening and on the side of the main body portion 231a away from the first substrate 21. At least a portion of the light-emitting functional layer 233 faces the main body portion 231a, and the portion of the light-emitting functional layer 233 facing the main body portion 231a is a curved film layer protruding towards the first substrate 21. Optionally, the light-emitting device 23 is an OLED device, in which case the light-emitting layer uses an organic light-emitting material; or, the light-emitting device 23 is a QLED (Quantum Dot Light Emitting Diodes) device, in which case the light-emitting layer uses a quantum dot light-emitting material.

[0070] It should be noted that at least a portion of the light-emitting functional layer 233 being directly opposite the first electrode 231 means that the orthogonal projection of at least a portion of the light-emitting functional layer 233 onto the first substrate 21 is within the orthogonal projection range of the main body portion 231a onto the first substrate 21. Correspondingly, the portion of the light-emitting functional layer 233 directly opposite the main body portion 231a means the portion of the light-emitting functional layer 233 falling within the orthogonal projection range of the main body portion 231a.

[0071] It should also be noted that the part of the light-emitting functional layer 233 that faces the main body 231a is a curved film layer that protrudes toward the first substrate 21, which means that the upper and lower surfaces of the part of the light-emitting functional layer 233 that faces the main body 231a are both curved toward the first substrate 21.

[0072] For the light-emitting device 23, when a current is generated between the first electrode 231 and the second electrode 232, the light-emitting functional layer 233 emits light, and the light-emitting area of ​​the light-emitting functional layer 233 is the area directly opposite the main body portion 231a of the first electrode 231. Since in this embodiment, the portion of the light-emitting functional layer 233 directly opposite the main body portion 231a is a curved film layer protruding towards the first substrate 21, in this case, the light at the edge of the light-emitting area of ​​the light-emitting functional layer 233 will converge towards the center. Therefore, and Figure 1 In comparison, the light emission angle of the light-emitting device 23 in the present embodiment is reduced, thereby reducing or preventing crosstalk.

[0073] The display substrate in this embodiment can be used in a display device with a color conversion layer. Scattering particles can be provided in the color conversion layer. When the light from the light-emitting device 23 passes through the color conversion layer, the light is scattered in different directions by the scattering effect of the scattering particles. Therefore, although the light emission angle of the light-emitting device 23 is reduced, the viewing angle of the display device will not be affected.

[0074] Additionally, the display substrate may also include a pixel circuit for providing driving current to the light-emitting device 23 to drive the light-emitting device 23 to emit light. For example, the pixel circuit includes multiple thin-film transistors 24 (such as...). Figure 3B (as shown) and at least one capacitor.

[0075] The thin-film transistor 24 includes a gate 241, an active layer 242, a source 243, and a drain 244. Taking a top-gate thin-film transistor as an example, the active layer 242 is located between the gate 241 and the first substrate 21. The material of the active layer 242 may include, for example, inorganic semiconductor materials (e.g., polycrystalline silicon, amorphous silicon, etc.), organic semiconductor materials, and oxide semiconductor materials. The active layer 242 includes a channel portion and a source connection portion and a drain connection portion located on both sides of the channel portion. The source connection portion is connected to the source 243 of the thin-film transistor 24, and the drain connection portion is connected to the drain 244 of the thin-film transistor 24. Both the source connection portion and the drain connection portion may be doped with impurities (e.g., N-type impurities or P-type impurities) with a higher impurity concentration than the channel portion. The channel is directly opposite the gate 241 of the thin film transistor 24. When the voltage signal applied to the gate 241 reaches a certain value, a carrier path is formed in the channel, which turns on the source 243 and the drain 244 of the thin film transistor 24.

[0076] A buffer layer BFL is disposed between the thin-film transistor 24 and the first substrate 21 to prevent or reduce the diffusion of metal atoms and / or impurities from the first substrate 21 into the active layer 242 of the transistor. The buffer layer BFL may comprise inorganic materials such as silicon oxide (SiOx), silicon nitride (SiNx), and / or silicon oxynitride (SiON), and may be formed as a multilayer or a single layer.

[0077] The first gate insulating layer GI1 is disposed on the side of the active layer 242 away from the first substrate 21. The material of the first gate insulating layer GI1 may include silicon compounds and metal oxides. For example, the material of the first gate insulating layer GI1 includes silicon oxynitride (SiON), silicon oxide (SiOx), silicon nitride (SiNx), silicon oxycarbide (SiOxCy), silicon carbide nitride (SiCxNy), aluminum oxide (AlOx), aluminum nitride (AlNx), tantalum oxide (TaOx), hafnium oxide (HfOx), zirconium oxide (ZrOx), titanium oxide (TiOx), etc. In addition, the first gate insulating layer GI1 may be a single layer or multiple layers.

[0078] The first gate electrode layer is disposed on the side of the first gate insulating layer GI1 away from the first substrate 21. The first gate electrode layer includes the gate 241 of each thin-film transistor and the first electrode plate of the capacitor. The material of the first gate electrode layer may include, for example, metal, metal alloy, metal nitride, conductive metal oxide, transparent conductive material, etc. For example, the first gate electrode layer G1 may include gold (Au), gold alloys, silver (Ag), silver alloys, aluminum (Al), aluminum alloys, aluminum nitride (AlNx), tungsten (W), tungsten nitride (WNx), copper (Cu), copper alloys, nickel (Ni), chromium (Cr), chromium nitride (CrNx), molybdenum (Mo), molybdenum alloys, titanium (Ti), titanium nitride (TiNx), platinum (Pt), tantalum (Ta), tantalum nitride (TaNx), neodymium (Nd), scandium (Sc), strontium ruthenium oxide (SRO), zinc oxide (ZnOx), tin oxide (SnOx), indium oxide (InOx), gallium oxide (GaOx), indium tin oxide (ITO), indium zinc oxide (IZO), etc. The first gate electrode layer may have a single layer or multiple layers.

[0079] The second gate insulating layer GI2 is disposed on the side of the first gate electrode layer away from the first substrate 21. The material of the second gate insulating layer GI2 may include, for example, silicon compounds or metal oxides. For example, the material of the second gate insulating layer GI2 may include silicon oxynitride (SiON), silicon oxide (SiOx), silicon nitride (SiNx), silicon oxycarbide (SiOxCy), silicon carbide nitride (SiCxNy), aluminum oxide (AlOx), aluminum nitride (AlNx), tantalum oxide (TaOx), hafnium oxide (HfOx), zirconium oxide (ZrOx), titanium oxide (TiOx), etc. The second gate insulating layer GI2 may be formed as a single layer or multiple layers.

[0080] A second gate electrode layer (not shown) is disposed on the side of the second gate insulating layer GI2 away from the first substrate 21. The second gate electrode layer may include the second electrode plate of the capacitor. The material of the second gate electrode layer may be the same as the material of the first electrode plate, as specifically listed in the conductive materials above.

[0081] The interlayer insulating layer (ILD) is disposed on the side of the second gate electrode layer away from the first substrate 21. The material of the interlayer insulating layer (ILD) can include, for example, silicon compounds and metal oxides. Specifically, silicon compounds and metal oxides listed above can be selected, which will not be elaborated here.

[0082] The source / drain conductive layer is disposed on the side of the interlayer insulating layer (ILD) away from the first substrate 21. The first source / drain conductive layer may include the source 243 and drain 244 of each transistor, with the source 243 electrically connected to the source junction and the drain 244 electrically connected to the drain junction. The source / drain conductive layer may include metals, alloys, metal nitrides, conductive metal oxides, transparent conductive materials, etc. For example, the source / drain conductive layer may be a single layer or multiple layers made of metal, such as Mo / Al / Mo or Ti / Al / Ti.

[0083] The insulating layer 22 is disposed on the side of the source / drain conductive layer away from the first substrate 21. The insulating layer 22 can be made of an organic insulating material, such as polyimide, epoxy resin, acrylic, polyester, photoresist, polyacrylate, polyamide, siloxane, and other resin-based materials. Alternatively, the organic insulating material can include elastic materials such as urethane, thermoplastic polyurethane (TPU), etc.

[0084] In some embodiments, to facilitate the formation of a curved shape for at least a portion of the light-emitting functional layer 233, such as... Figure 3B As shown, a recess 22v is provided on the insulating layer 22 corresponding to the position of the pixel opening. The main body portion 231a of the first electrode 231 and the light-emitting functional layer 233 are located in the recess 22v, so that the main body portion 231a and the light-emitting functional layer 233 of the first electrode 231 are conformally fitted to the recess 22v. The first electrode 231 also includes a connecting portion 231b connected to the main body portion 231a. The orthographic projection of the connecting portion 231b on the first substrate 21 is outside the orthographic projection of the recess 22v on the first substrate 21. The connecting portion 231b is connected to the drain 244 of the transistor through a via on the insulating layer 22.

[0085] The present invention does not specifically limit the shape of the recess 22v. For example, the inner surface of the recess 22v is an arc-shaped surface; or the longitudinal section of the recess 22v is an inverted trapezoid.

[0086] Figure 4 This is a schematic diagram of the shape of the recess provided in the embodiments of this disclosure, such as... Figure 4 As shown, in some embodiments, the inner surface of the recess 22v is an arc-shaped surface, and the angle θ between the line connecting the center to the edge of the inner surface of the recess 22v and the thickness direction of the display substrate is greater than 120°, thereby improving crosstalk while preventing the first electrode 231 from breaking.

[0087] The pixel defining layer (PDL) is located on the side of the layer containing the first electrode 231 away from the first substrate 21. The PDL has pixel openings that correspond one-to-one with the light-emitting devices 23, and the pixel openings expose the main body portion 231a of the corresponding first electrode 231. The light-emitting functional layers 233 are correspondingly disposed in the pixel openings. The orthographic projection of the opening of the recess 22v on the first substrate 21 can coincide with the orthographic projection of the bottom of the pixel opening on the first substrate 21.

[0088] In some embodiments, the pixel defining layer (PDL) can be made of a material with high reflectivity, thereby reducing the absorption of light from the light-emitting device 23 and improving light utilization. Optionally, the reflectivity of the pixel defining layer (PDL) is greater than 8%, for example, approximately 10%, approximately 40%, or approximately 50%. Here, the reflectivity of the pixel defining layer refers to the reflectivity of the light emitted by the light-emitting device.

[0089] In some examples, the pixel delimiting layer (PDL) includes a substrate and reflective particles disposed in the substrate. The reflectivity of the reflective particles is greater than that of the substrate. For example, the substrate material includes polyimide resin, acrylic resin, etc., and the reflective particle material includes silicon oxide, silicon nitride, etc.

[0090] In some embodiments, the orthographic projection of the light-emitting functional layer 233 on the first substrate 21 is located within the orthographic projection range of the recess 22v on the first substrate 21, so that when current flows between the first electrode 231 and the second electrode 232, the entire light-emitting functional layer 233 emits light, and the light emitted from the edge of the light-emitting functional layer 233 converges towards the center, reducing the overall light emission angle of the light-emitting functional layer 233.

[0091] The second electrode 232 of the light-emitting device 23 is located on the side of the light-emitting functional layer 233 away from the first substrate 21. The second electrodes 232 of multiple light-emitting devices 23 can be connected into a single structure.

[0092] like Figure 3BAs shown, the display substrate further includes an encapsulation layer EPL, which covers the pixel boundary layer PDL and the light-emitting device 23, and is used to encapsulate the light-emitting device 23 to prevent moisture and / or oxygen from the external environment from corroding the light-emitting device 23. In some embodiments, the encapsulation layer EPL includes a first inorganic encapsulation layer, a second inorganic encapsulation layer, and an organic encapsulation layer. The second inorganic encapsulation layer is located on the side of the first inorganic encapsulation layer away from the first substrate 21, and the organic encapsulation layer is located between the first and second inorganic encapsulation layers. Both the first and second inorganic encapsulation layers can be made of highly dense inorganic materials such as silicon oxynitride (SiON), silicon oxide (SiOx), and silicon nitride (SiNx). The organic encapsulation layer can be made of a polymer material containing a desiccant or a polymer material that can block moisture. For example, a polymer resin can be used to relieve the stress of the first and second inorganic encapsulation layers, and it can also include a water-absorbing material such as a desiccant to absorb water, oxygen, and other substances that penetrate the interior.

[0093] Figure 5 The light-emitting devices in the display substrate provided in the embodiments of this disclosure and Figure 1 Comparison of light field distribution of light-emitting devices in the figure, such as Figure 5 As shown, in the display substrate provided in this embodiment, the luminous intensity of the light-emitting device decreases at large angles, thereby reducing crosstalk between pixels.

[0094] Figure 6 This is a schematic diagram of a display panel provided in some embodiments of this disclosure, such as... Figure 6 As shown, the display panel includes: the aforementioned display substrate and a color conversion layer located on the light-emitting side of the display substrate. The light-emitting side of the display substrate is the light-emitting side of the light-emitting device. The color conversion layer includes multiple repeating units, each repeating unit including multiple light-emitting portions 31, and each light-emitting device 23 corresponds to one light-emitting portion 31.

[0095] In some embodiments, the light-emitting device 23 is used to emit light of a preset color, and the light-emitting section 31 is configured to receive the light emitted by the corresponding light-emitting device 23 and emit light of the same or different color. Optionally, the light emitted by multiple light-emitting sections 31 in the same repeating unit is of different colors. For example, the multiple light-emitting sections 31 in the same repeating unit emit red light, blue light, and green light, respectively. Alternatively, at least two light-emitting sections 31 in the same repeating unit emit light of different colors. For example, the same repeating unit includes four light-emitting sections 31, and the light emitted by the four light-emitting sections 31 is red, green, green, and blue, respectively.

[0096] In some embodiments, the preset color is blue. Multiple light-emitting sections in the same repeating unit may include: a red light-emitting section 31r, a green light-emitting section 31g, and a blue light-emitting section 31b. The red light-emitting section 31r and the green light-emitting section 31g both employ quantum dot layers, while the blue light-emitting section 31b employs a scattering film layer.

[0097] Specifically, the material of the red light-emitting part 31r includes red quantum dot material, the material of the green light-emitting part 31g may include green quantum dot material, and the material of the blue light-emitting part 31b includes scattering particle material. The red quantum dot material is used to emit red light under the excitation of blue light emitted by the light-emitting device 23; the green quantum dot material is used to emit green light under the excitation of blue light emitted by the light-emitting device 23. Both the red and green quantum dot materials can be at least one of indium phosphide (InP), zinc oxide (ZnO), graphene, cadmium selenide (CdSe), cadmium sulfide (CdS), cadmium telluride (CdTe), zinc selenide (ZnSe), zinc telluride (ZnTe), or zinc sulfide (ZnS). The emission color of the quantum dot material can be controlled by controlling the particle size of the quantum dot material. For example, both the red and green quantum dot materials are zinc sulfide. In this case, the particle size of the red quantum dot material is between 9 nm and 10 nm, thus emitting red light; the particle size of the green quantum dot material is between 6.5 nm and 7.5 nm, thus emitting green light. The material of the blue light-emitting part 31b includes scattering particle material, thereby scattering the received blue light.

[0098] In addition, scattering particles can also be doped into the red light-emitting part 31r and the green light-emitting part 31g. In this way, under the scattering effect of the scattering particles, even if the light-emitting device 23 has a small light-emitting angle, each light-emitting part 31 can emit light at a large angle.

[0099] The light-emitting side of the display substrate 20 is also provided with a receiving structure layer 32, which has multiple receiving slots, each corresponding to a light-emitting device 23, and the light-emitting part 31 is disposed in the receiving slot. The receiving structure layer 32 can be made of a photosensitive material for ease of fabrication. Alternatively, the receiving structure layer 32 can be made of a high-reflectivity material to improve light utilization.

[0100] Figure 7 This is a schematic diagram of the reflectance curves of the two types of accommodating structural layers provided in the embodiments of this disclosure, where the horizontal axis represents the wavelength of light and the vertical axis represents the reflectance. Figure 7 Curve 1 in the figure shows the reflectance curve when the accommodating structural layer is made of acrylic resin or polyimide resin. Figure 7Curve 2 in the figure shows the reflectivity curve when the material containing the structural layer includes resin and reflective particles doped in the resin layer. The reflective particles can be silicon oxide particles, silicon nitride particles, etc. In practical applications, the material of the pixel delimiting layer can be selected according to actual needs.

[0101] In some embodiments, the surface of the light-emitting portion 31 away from the display substrate 20 is convex. It should be noted that a convex surface means that the surface protrudes outward from the light-emitting portion 31, thereby forming a convex lens structure for the light-emitting portion 31. This arrangement can improve the brightness of the display panel at the forward viewing angle.

[0102] To facilitate the fabrication of the convex light-emitting portion 31, in some embodiments, the area where the receiving structure layer 32 contacts the light-emitting portion 31 is made of a hydrophobic material. In some examples, the receiving structure layer 32 is entirely made of a hydrophobic material. In this case, when fabricating the light-emitting portion 31, the receiving structure layer 32 with a receiving groove can be first fabricated on the display substrate 20 using a hydrophobic material. Then, a solution for fabricating the light-emitting portion 31 is printed into the receiving groove. Under the hydrophobic effect of the hydrophobic structure layer, the solution in the receiving groove forms a structure with a protruding top, and after curing, a light-emitting portion 31 with a convex top surface is formed. In other examples, the receiving structure layer 32 includes a body and a hydrophobic film layer disposed on the body, with the light-emitting portion 31 in contact with the hydrophobic film layer. The material of the body is not limited.

[0103] In some examples, the hydrophobicity of the above-mentioned hydrophobic material meets the following criteria: for example, when propylene glycol methyl ether acetate (PGMEA) comes into contact with the hydrophobic material, the contact angle of propylene glycol methyl ether acetate is greater than 60°, so as to facilitate the formation of a convex surface on the top surface of the light-emitting portion 31.

[0104] Since ambient light also contains blue light, when blue light from the ambient light enters the red light-emitting part 31r and the green light-emitting part 31g, it will excite the red light-emitting part 31r and the green light-emitting part 31g to emit light, thereby affecting the display effect of the display panel. To prevent ambient light from interfering with the display panel's display, in some embodiments, the display panel further includes a color filter layer and a black matrix BM. The color filter layer is located on the side of the color conversion layer away from the display substrate 20. The color filter layer includes multiple color filter sections 33r, 33g, and 33b, each corresponding to a light-emitting section 31. The color color emitted by each color filter section 33r / 33g / 33b is the same as the color emitted by the corresponding light-emitting section 31. For example, the color color of the color filter section 33r is the same as the color emitted by the red light-emitting section 31r, the color color of the color filter section 33g is the same as the color emitted by the green light-emitting section 31g, and the color color of the color filter section 33b is the same as the color emitted by the blue light-emitting section 31b. The black matrix BM is located between the accommodating structure layer 32 and the display substrate 20. The black matrix BM is formed into a grid structure to define multiple sub-pixel areas, which are the areas where the light-emitting devices 23 are located. At least a portion of each light-emitting part 31 has an orthographic projection on the first substrate 21 that does not overlap with the orthographic projection of the black matrix BM on the first substrate 21.

[0105] Additionally, a filler layer 35, such as an optical adhesive layer, can be provided between the light-emitting portion 31 and the color filter layer, so that the color filter layer can be located on a flat surface. A protective layer 34 can also be provided on the side of the color filter layer away from the display substrate 20 to protect the color filter layer and the structure beneath it.

[0106] for Figure 6 In the manufacturing process of the display panel shown, after the display substrate is manufactured, a black matrix BM can be first formed on the encapsulation layer of the display substrate, and then a receiving structure layer 32 with receiving grooves can be formed; then, a light-emitting part 31 is formed in the receiving grooves; then, a filling layer 35, a color filter layer and a protective layer 34 are formed in sequence.

[0107] Figure 8 This is a schematic diagram showing the brightness distribution curves of light from a test light source before and after passing through a convex lens. The horizontal axis represents the viewing angle, and the vertical axis represents the normalized light brightness. Figure 8 In the diagram, curve 1 represents the relationship between the brightness of the light from the test light source and the viewing angle; curve 2 represents the relationship between the brightness of the light from the test light source after passing through the convex lens and the viewing angle. The test light source is the light source used for testing, specifically an LED or OLED. The convex lens is the convex lens used for testing, and its shape is the same as that of the light-emitting section 31. Figure 8It can be seen that before the light from the test light source shines on the convex lens, the brightness difference at various viewing angles is small; after the light from the test light source passes through the convex lens, the brightness at the forward viewing angle (i.e., the position with the smaller viewing angle) increases. Similarly, when the light-emitting part 31 is formed into a convex structure, the brightness at the forward viewing angle of the display panel can also be increased.

[0108] Figure 9 This is a schematic diagram of a display panel provided in some other embodiments of this disclosure, such as... Figure 9 As shown, in some other embodiments, the display panel also includes a color filter layer and a black matrix BM, with the color filter layer located on the side of the color conversion layer away from the display substrate 20. Figure 6 The difference is that, in Figure 9 In this configuration, a color filter layer is disposed on the second substrate 36 and located on the side of the second substrate 36 facing the first substrate 21, while the black matrix BM is located on the side of the color conversion layer away from the display substrate 20. Additionally, in... Figure 9 In the display substrate 20, the surface of the light-emitting part 31 away from the first substrate 21 is a plane, and the filling layer is disposed between the light-emitting part 31 and the display substrate 20.

[0109] for Figure 9 In the manufacturing process of the display panel, a black matrix BM, a color filter layer, a housing structure layer 32, and a light-emitting part 31 can be formed on the second substrate 21 to obtain a cell substrate; then, a filling layer 35 is formed on the display substrate 20 or on the cell substrate, and the display substrate 20 and the cell substrate are assembled to form the display panel.

[0110] Figure 10 This is a schematic diagram showing the relationship between the intensity of light from a test light source after passing through different structures and the viewing angle. The horizontal axis represents the viewing angle, and the vertical axis represents the normalized light intensity. The test light source is the light source used for the test, which can be an LED, OLED, etc. The light emitted by the test light source is blue light. Figure 10 The multiple curves shown are: the relationship between the intensity of the test light source and the viewing angle; the relationship between the intensity of the test light source after passing through the red light-emitting part 31r and the viewing angle; and the relationship between the intensity of the test light source after passing through the green light-emitting part 31g and the viewing angle. The shapes of the red light-emitting part 31r and the green light-emitting part 31g are as follows: Figure 9 As shown. From Figure 10 As can be seen, the light intensity of the light emitted from the test light source is relatively high at the forward viewing angle, and the light intensity decreases rapidly as the viewing angle increases. However, after passing through each light-emitting part 31, the light intensity at each viewing angle does not change significantly.

[0111] This disclosure also provides a method for manufacturing the above-described display panel. Figure 11 A flowchart illustrating the manufacturing method of the display panel provided in this embodiment of the disclosure is shown below. Figure 11 As shown, the method for manufacturing the display panel includes:

[0112] Step S10: Fabricate a display substrate, which may be the display substrate described in the above embodiments.

[0113] Step S20: A color conversion layer is formed on the light-emitting side of the display substrate. The color conversion layer includes multiple repeating units, each repeating unit includes multiple light-emitting sections, and each light-emitting device corresponds to one light-emitting section. The light-emitting section is configured to receive the light emitted by the corresponding light-emitting device and emit light that is the same as or different from a preset color. Optionally, the light emitted by the multiple light-emitting sections in the same repeating unit may be of different colors.

[0114] Figure 12 Here is a flowchart of an optional implementation of step S10, such as... Figure 12 As shown, step S10 includes:

[0115] Step S11: Form pixel circuits on the first substrate.

[0116] Step S12: An insulating layer is formed on the first substrate. A recess is formed on the insulating layer at the position corresponding to the pixel opening. In addition, a via is provided on the insulating layer so that the first electrode formed later can be connected to the drain of the thin film transistor through the via.

[0117] Figures 13A to 13C The following is a schematic diagram illustrating the process of fabricating an insulating layer with recesses, as provided in some embodiments of this disclosure. Figures 13A to 13C As shown, the process of creating an insulating layer with recesses includes:

[0118] Step S12a, as follows Figure 13A As shown, an insulating material layer 22a is formed, which can be a positive photosensitive material layer.

[0119] Step S12b, as follows Figure 13B As shown, an insulating material layer 22a is subjected to stepped exposure using a mask 40 (e.g., a half-tone mask). After exposure, the insulating material layer 22a forms an unexposed portion 221a, a fully exposed portion 222a, and a partially exposed portion 223a. The area where the fully exposed portion 222a is located is the area where vias are to be formed, and the area where the partially exposed portion 223a is located is the area where recesses are to be formed. The partially exposed portion 223a includes an exposed sub-portion 223a1 and an unexposed sub-portion 223a2. The mask 40 includes a light-blocking area 41, a fully transparent area 42, and a partially transparent area 43. The light-blocking area 41 corresponds to the unexposed portion 221a, the fully transparent area 42 corresponds to the fully exposed portion 222a, and the partially transparent area 43 corresponds to the partially exposed portion 223a.

[0120] Step S12c, as follows Figure 13C As shown, the exposed insulating material layer 22a is developed to remove the fully exposed portion 222a, thereby forming a via 22h; the exposed sub-port 223a1 in the partially exposed portion 223a is removed, thereby forming a recess 22v; the unexposed portion 221a and the unexposed sub-port 223a2 in the partially exposed portion 223a are retained. Thus, the developed insulating material layer is formed as an insulating layer 22 with the recess 22v.

[0121] In this process, from the edge to the center of the partially transparent area 43 of the mask plate 40, the amount of light transmitted in the partially transparent area 43 gradually increases, thus ensuring that the exposure level is greatest in the center of the partially exposed area 223a; the further away from the center, the lower the exposure level of the partially exposed area. Therefore, in the recess 22v formed after development, the depth is greater closer to the center of the recess 22v.

[0122] Step S12 is followed by:

[0123] Step S13: Form a first electrode for a plurality of light-emitting devices on a first substrate. The first electrode includes a main body portion located in a recess.

[0124] Step S14: Form a pixel defining layer. The pixel defining layer has multiple pixel openings. The first electrode corresponds to each pixel opening, and the main body is exposed by the pixel openings.

[0125] Step S15: Form a light-emitting functional layer for a plurality of light-emitting devices. The light-emitting functional layer is located in the pixel opening and on the side of the first electrode away from the first substrate. At least a portion of the light-emitting functional layer is directly opposite the first electrode. The portion of the light-emitting functional layer directly opposite the first electrode is attached to the first electrode and located in the recess, forming a curved film layer protruding toward the first substrate.

[0126] Optionally, the light-emitting functional layer includes a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, and other film layers. Each film layer can be formed by vapor deposition, thereby forming a film layer with uniform thickness.

[0127] Figures 14 to 15 This is a schematic diagram of step S20 provided in some embodiments of this disclosure, such as... Figures 14 to 15 As shown, step S20 includes:

[0128] Step S21a, as Figure 14 As shown, a receiving structure layer 32 is formed on the light-emitting side of the display substrate 20. The receiving structure layer 32 has a plurality of receiving grooves 32v, and the receiving grooves 32v correspond one-to-one with the light-emitting devices 23.

[0129] In some embodiments, the accommodating structural layer 32 is made of a hydrophobic material.

[0130] Step S21b, as follows Figure 15 As shown, a light-emitting section 31 is formed in each receiving cell 32v using inkjet printing. The preset color is blue, and the multiple light-emitting sections 31 in the same repeating unit include: a red light-emitting section 31r, a green light-emitting section 31g, and a blue light-emitting section 31b; the material of the red light-emitting section 31r includes red quantum dot material, the material of the green light-emitting section 31g includes green quantum dot material, and the material of the blue light-emitting section 31b includes scattering particle material.

[0131] Optionally, the material of the red light-emitting part 31r includes red quantum dot material and scattering particle material, the material of the green light-emitting part 31g includes green quantum dot material and scattering particle material, and the material of the blue light-emitting part 31b includes scattering particle material. Step S21b specifically includes: inkjet printing a first solution into the receiving tank 32v where the red light-emitting part 31r is to be formed, inkjet printing a second solution into the receiving tank 32v where the green light-emitting part 31g is to be formed, and inkjet printing a third solution into the receiving tank 32v where the blue light-emitting part 31b is to be formed; wherein the first solution contains red quantum dot material and scattering particle material, the second solution contains green quantum dot material and scattering particle material, and the third solution contains scattering particle material and scattering particle material. Furthermore, the volume of the solution printed into each receiving tank 32v is larger than the volume of the receiving tank 32v. Then, the solution in the receiving tank 32v is cured to form multiple light-emitting parts 31. Since the containment structure layer 32 is made of a hydrophobic material, the middle of the solution formed in the containment tank 32v bulges upward, thereby making the surface of the solidified light-emitting part 31 away from the display substrate 20 convex.

[0132] Optionally, before step S20, a black matrix BM may be formed on the display substrate 20, which may be formed on the encapsulation layer EPL of the display substrate 20. After step S20, a fill layer, a color filter layer, and a protective layer may be sequentially formed on the side of the color conversion layer away from the display substrate 20.

[0133] Figures 16A to 16C This is a schematic diagram of step S20 provided in some other embodiments of this disclosure, such as... Figures 16A to 16C As shown, step S20 includes:

[0134] Step S22a, as Figure 16A As shown, a receiving structure layer 32 is formed on the second substrate 36. The receiving structure layer 32 has a plurality of receiving grooves 32v, each corresponding to a light-emitting device. The second substrate 32 can be a glass substrate or a flexible substrate made of a flexible material such as polyimide.

[0135] Step S22b, as follows Figure 16B As shown, a light-emitting section 31 is formed in each receiving cell 32v using inkjet printing; wherein the light emitted by the light-emitting device is blue, and the multiple light-emitting sections 31 in the same repeating unit include: a red light-emitting section 31r, a green light-emitting section 31g, and a blue light-emitting section 31b; wherein the material of the red light-emitting section 31r includes red quantum dot material, the material of the green light-emitting section 31g includes green quantum dot material, and the material of the blue light-emitting section 31b includes scattering particle material.

[0136] Step S22c, as follows Figure 16C As shown, the second substrate 36 is aligned with the display substrate 20, and the light-emitting part 31 is aligned with the corresponding light-emitting device 23. Here, the alignment of the light-emitting part 31 with the corresponding light-emitting device 23 means that the orthogonal projections of the light-emitting part 31 and the corresponding light-emitting device 23 on the first substrate 21 at least partially overlap, for example, the center of the light-emitting part 31 and the center of the light-emitting device 23 are aligned.

[0137] In addition, before forming the accommodating structure layer 32 on the second substrate 36, a color filter layer and a black matrix BM can be formed on the second substrate 36. The color filter layer includes a red filter 33r corresponding to the red light-emitting part 31r, a green filter 33g corresponding to the green light-emitting part 31g, and a blue filter 33b corresponding to the blue light-emitting part 31b.

[0138] This disclosure also provides a display device, which includes the display panel described in the above embodiments. The display device can be any product or component with display functionality, such as an OLED panel, a QLED display panel, a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, or a navigator.

[0139] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display panel, comprising a display substrate and a color conversion layer located on the light-emitting side of the display substrate: The display substrate includes: First substrate; A pixel defining layer disposed on the first substrate, the pixel defining layer having a plurality of pixel openings; Multiple light-emitting devices, wherein the multiple light-emitting devices are configured to emit light of a preset color; The light-emitting device corresponds one-to-one with the pixel opening. The light-emitting device includes a first electrode and a light-emitting functional layer. The first electrode is located between the pixel defining layer and the first substrate. The first electrode includes a main body portion exposed by the pixel opening. The light-emitting functional layer is located in the pixel opening and on the side of the main body away from the first substrate. At least a portion of the light-emitting functional layer is directly opposite the main body. The portion of the light-emitting functional layer directly opposite the main body is a curved film layer protruding toward the first substrate. The color conversion layer includes multiple repeating units, each repeating unit includes multiple light-emitting sections, each light-emitting device corresponds to one light-emitting section, and the light-emitting section is configured to receive the light emitted by the corresponding light-emitting device and emit light that is the same as or different from a preset color. The preset color is blue, and multiple light-emitting parts in the same repeating unit emit red light, blue light and green light respectively. Each light-emitting part of each color is provided with scattering particle material. The light-emitting side of the display substrate is also provided with a receiving structure layer, the receiving structure layer having a plurality of receiving slots, each of which corresponds to a light-emitting device, and the light-emitting part is disposed in the receiving slot; The portion of the containment structure layer that contacts the light-emitting part is made of a hydrophobic material. The containment structure layer includes a resin layer and reflective particles doped in the resin layer. The display substrate further includes: A color filter layer is located on the side of the color conversion layer away from the display substrate. The color filter layer includes a plurality of color filter sections, each of which corresponds to a light emitting section. The color of each color filter section is the same as the color of the light emitted by the corresponding light emitting section. The black matrix is ​​located between the accommodating structure layer and the display substrate, or on the side of the color conversion layer away from the display substrate; the orthographic projection of a portion of each light-emitting part on the first substrate does not overlap with the orthographic projection of the black matrix on the first substrate, and the black matrix is ​​a grid structure to define the area where the light-emitting device is located; the width of the portion of the black matrix corresponding to the portion between two adjacent grids is greater than the width of the portion of the accommodating structure layer between two adjacent light-emitting parts.

2. The display panel according to claim 1, wherein, The display substrate further includes an insulating layer, which is located between the pixel defining layer and the first substrate, and the insulating layer has a recess corresponding to the position of the pixel opening; Both the main body and the light-emitting functional layer are located in the recess.

3. The display panel according to claim 2, wherein, The inner surface of the recess is an arc-shaped surface, and the angle between the line connecting the center to the edge of the inner surface and the thickness direction of the display substrate is greater than 120°.

4. The display panel according to claim 2 or 3, wherein, The orthogonal projection of the light-emitting functional layer on the first substrate lies within the orthogonal projection range of the recess on the first substrate.

5. The display panel according to claim 2 or 3, wherein, The light-emitting device further includes a second electrode, which is located on the side of the light-emitting functional layer away from the first substrate; The display substrate further includes: A thin-film transistor, wherein the thin-film transistor is located between the insulating layer and the first substrate, and the first electrode is connected to the thin-film transistor through a via in the insulating layer. An encapsulation layer that covers the pixel defining layer and the light-emitting device.

6. The display panel according to any one of claims 1 to 5, wherein, The multiple light-emitting sections in the same repeating unit include a red light-emitting section, a green light-emitting section, and a blue light-emitting section, wherein the material of the red light-emitting section includes red quantum dot material, and the material of the green light-emitting section includes green quantum dot material.

7. The display panel according to any one of claims 1 to 5, wherein, The surface of the light-emitting part away from the display substrate is convex.

8. A method for manufacturing a display panel, comprising: The steps for manufacturing a display substrate include: A first electrode for a plurality of light-emitting devices is formed on a first substrate, the first electrode including a main body portion; A pixel defining layer is formed, the pixel defining layer having a plurality of pixel openings, the first electrode corresponding one-to-one with the pixel openings, and the main body being exposed by the pixel openings; A plurality of light-emitting functional layers are formed for the light-emitting devices. The light-emitting functional layers are located in the pixel opening and on the side of the main body away from the first substrate. At least a portion of the light-emitting functional layers is directly opposite the main body. The portion of the light-emitting functional layers directly opposite the main body is a curved film layer protruding toward the first substrate. The method for manufacturing the display panel further includes: A color conversion layer is formed on the light-emitting side of the display substrate. The color conversion layer includes multiple repeating units, each repeating unit includes multiple light-emitting parts, and each light-emitting device corresponds to one light-emitting part. The light-emitting part is configured to receive the light emitted by the corresponding light-emitting device and emit light that is the same as or different from the preset color. The preset color is blue, and multiple light-emitting parts in the same repeating unit emit red light, blue light and green light respectively. Each light-emitting part of each color is provided with scattering particle material. A color conversion layer is formed on the light-emitting side of the display substrate, comprising: A receiving structure layer is formed on the light-emitting side of the display substrate. The receiving structure layer has a plurality of receiving slots, and each receiving slot corresponds to a light-emitting device. The light-emitting part is formed in each receiving slot using inkjet printing; The accommodating structure layer is made of a hydrophobic material, so that the surface of the light-emitting part away from the display substrate is formed as a convex surface; the accommodating structure layer includes a resin layer and reflective particles doped in the resin layer; The method for manufacturing the display panel further includes: After forming the color conversion layer, a color filter layer is formed, which includes multiple color filter sections, each of which corresponds to a light emitting section, and the color of the color filter section is the same as the color of the light emitted by the corresponding light emitting section. Before forming the containment structure layer or after forming the color conversion layer, a black matrix is ​​formed; the black matrix is ​​a grid structure to define the area where the light-emitting device is located; the orthographic projection of a portion of each light-emitting part on the first substrate does not overlap with the orthographic projection of the black matrix on the first substrate, and the width of the portion of the black matrix corresponding to the space between two adjacent grids is greater than the width of the portion of the containment structure layer located between two adjacent light-emitting parts.

9. The manufacturing method according to claim 8, wherein, The steps for manufacturing the display substrate also include: Before forming the first electrode of multiple light-emitting devices, an insulating layer is formed on the first substrate, and a recess is formed on the insulating layer corresponding to the position of the pixel opening; Both the main body and the light-emitting functional layer are located in the recess.

10. The manufacturing method according to claim 9, wherein, The multiple light-emitting sections in the same repeating unit include: a red light-emitting section, a green light-emitting section, and a blue light-emitting section; the material of the red light-emitting section includes red quantum dot material, the material of the green light-emitting section includes green quantum dot material, and the material of the blue light-emitting section includes scattering particle material.

11. A display device comprising the display panel according to any one of claims 1 to 7.

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