Light-emitting device, display panel, and display device

Abstract

The present invention discloses a light-emitting device, a display panel, and a display device. The light-emitting device includes: a substrate, on which a plurality of spaced-apart convex structures are provided. The convex structures include a first convex and at least one gentle structure located at the edge of the first convex. The first electrode layer is conformally disposed on the convex structures, and the light-emitting layer conformally covers the first electrode layer; the second electrode layer is disposed on the side of the light-emitting layer away from the substrate. At least one gentle structure located at the edge of the first convex enables the light-emitting layer and / or the second electrode layer to be gently transitionally connected between adjacent convex structures. The convex structures are configured to include a first convex and a gentle structure located at the edge of the first convex. By means of the gentle structure, the steepness of the convex boundary of the convex structure is reduced, so that the light-emitting layer and / or the second electrode layer are gently transitionally connected between adjacent convex structures, avoiding a relatively steep climb of the organic layer, preventing the electrodes from breaking and puncturing, avoiding problems such as leakage, and improving the display effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of displays, and particularly relates to a light-emitting device, a display panel, and a display device. Background Art

[0002] With the development of electronic devices, the functions of electronic devices are becoming more and more diverse, and there are also more and more devices with display screens. There are many types of display devices. In some micro display devices, the light-emitting device is an important light-emitting unit in the micro display. Among the index parameters for evaluating the micro display, brightness is an important measurement index. In a micro display device, the light-emitting device mainly includes an anode, a light-emitting layer, and a cathode. Among them, the anode provides holes, the cathode provides electrons, the holes and electrons combine in the light-emitting layer to form excitons, and the excitons excite the light-emitting layer to emit light, constituting a basic light-emitting structure. To achieve higher display brightness, a convex anode structure has been developed. The convex surface has a large surface area and a greater hole injection ability, which can greatly improve the brightness of the device. However, the convex boundary of the convex anode structure is relatively steep, which will cause the organic layer to climb steeply, and the cathode is prone to breakage and puncture problems. Cathode puncture will be accompanied by problems such as leakage, high power consumption, and low brightness, affecting the display effect. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a light-emitting device, a display panel, and a display device to solve the problem that the convex boundary of the convex anode structure is relatively steep, which will cause the organic layer to climb steeply, and the cathode is prone to breakage and puncture.

[0004] In a first aspect, an embodiment of the present invention provides a light-emitting device, including:

[0005] A substrate, on which a plurality of spaced-apart protruding structures are provided, and the protruding structures include a first protrusion and at least one gentle structure located at the edge of the first protrusion;

[0006] A first electrode layer, conformally disposed on the protruding structure;

[0007] A light-emitting layer, the light-emitting layer conformally covering the first electrode layer;

[0008] A second electrode layer, the second electrode layer being disposed on a side of the light-emitting layer away from the substrate,

[0009] The at least one gentle structure located at the edge of the first protrusion enables the light-emitting layer and / or the second electrode layer to be smoothly transitionally connected between adjacent protruding structures.

[0010] Among them, the at least one gentle structure located at the edge of the first protrusion includes a second protrusion, and the first protrusion is disposed on a side of the second protrusion away from the substrate; a positive projection of the first protrusion on the substrate is located within a positive projection of the second protrusion on the substrate, and an edge of the positive projection of the first protrusion on the substrate is spaced from an edge of the positive projection of the second protrusion on the substrate.

[0011] Among them, the positive projection of the first protrusion on the substrate and the positive projection of the second protrusion on the substrate are circular or elliptical.

[0012] Among them, the positive projection of the first protrusion on the substrate and the positive projection of the second protrusion on the substrate are circular and the centers of the circles coincide.

[0013] Among them, the first protrusion is spherical crown-shaped.

[0014] Among them, a side surface of the second protrusion is a convex curved surface.

[0015] Among them, a top of the second protrusion has a first surface, the first surface is parallel to the substrate, a bottom of the first protrusion is disposed on the first surface, and the bottom of the first protrusion coincides with the first surface.

[0016] Among them, a plurality of the protrusion structures are uniformly distributed, and shapes and sizes of each of the protrusion structures are the same.

[0017] Among them, the first electrode layer is a reflective electrode layer.

[0018] Among them, the first electrode layer includes:

[0019] A reflective layer and a light-transmissive conductive layer which are stacked, and the reflective layer is disposed on a surface close to the protrusion structure.

[0020] Among them, the light-emitting device further includes:

[0021] A packaging layer which covers the second electrode layer.

[0022] Among them, the light-emitting device further includes:

[0023] A color film layer which covers the packaging layer.

[0024] Among them, the light-emitting device further includes:

[0025] A light condensing structure which is disposed in a region corresponding to the protrusion structure on a side of the color film layer away from the substrate.

[0026] In a second aspect, an embodiment of the present invention provides a display panel, including the light-emitting device described in the above embodiment.

[0027] In a third aspect, an embodiment of the present invention provides a display device, including the display panel described in the above embodiment.

[0028] The light-emitting device according to an embodiment of the present invention includes: a substrate; a plurality of spaced-apart protruding structures provided on the substrate, the protruding structure including a first protrusion and at least one gentle structure located at an edge of the first protrusion; a first electrode layer conformally disposed on the protruding structure; a light-emitting layer, the light-emitting layer conformally covering the first electrode layer; and a second electrode layer disposed on a side of the light-emitting layer away from the substrate, the at least one gentle structure located at the edge of the first protrusion enabling the light-emitting layer and / or the second electrode layer to be gently transitionally connected between adjacent protruding structures. By setting the protruding structure to include a first protrusion and at least one gentle structure located at the edge of the first protrusion, the steepness of the convex boundary of the protruding structure can be reduced through the gentle structure, and through the at least one gentle structure located at the edge of the first protrusion, the light-emitting layer and / or the second electrode layer can be gently transitionally connected between adjacent protruding structures, which can avoid a relatively steep slope of the organic layer, prevent the electrode from breaking and puncturing, avoid problems such as leakage, weakening of blue light, high power consumption, and low brightness caused by electrode puncturing, and improve the display effect. Description of the Drawings

[0029] Figure 1 FIG. is a schematic structural diagram of a first electrode layer on the surface of a protruding structure;

[0030] Figure 2 FIG. is another schematic structural diagram of the light-emitting device according to an embodiment of the present invention;

[0031] Figure 3 FIG. is a schematic diagram of forming a first material layer a on a substrate;

[0032] Figure 4 FIG. is a schematic diagram of forming a photoresist b on the first material layer;

[0033] Figure 5 FIG. is a schematic diagram of forming a second protrusion after etching the first material layer;

[0034] Figure 6 FIG. is a schematic diagram of forming a second material layer c;

[0035] Figure 7 FIG. is a schematic diagram of forming a photoresist d on the second material layer;

[0036] Figure 8A schematic diagram of forming a first protrusion after etching the second material layer;

[0037] Figure 9 A schematic diagram of forming a first electrode layer on the surface of the protrusion structure;

[0038] Figure 10 An electron microscope image of the protrusion structure.

[0039] Reference numerals

[0040] Substrate 10; base 11; connection layer 12; connection post 13;

[0041] Protrusion structure 20;

[0042] First protrusion 21; second protrusion 22;

[0043] Light-emitting layer 30;

[0044] First electrode layer 31; second electrode layer 32; flat surface 33;

[0045] Reflection layer 311; conductive layer 312;

[0046] Encapsulation layer 40;

[0047] Color film layer 50;

[0048] Light condensing structure 60. Detailed implementation manners

[0049] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0050] The terms "first", "second", etc. in the specification and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention can be implemented in an order other than those illustrated or described herein. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally represents an "or" relationship between the associated objects before and after.

[0051] Next, in conjunction with the attached Figures 1 to 10 As shown, the light-emitting device, display panel, and display device provided by the embodiments of the present invention will be described in detail through specific embodiments and their application scenarios.

[0052] AsFigures 1 to 10 As shown in Figures 1 to 10 , the light-emitting device according to an embodiment of the present invention includes: a substrate 10, a first electrode layer 31, a light-emitting layer 30, and a second electrode layer 32. A plurality of spaced-apart protrusion structures 20 are provided on the substrate 10. The protrusion structure 20 may include a first protrusion 21 and at least one gentle structure located at the edge of the first protrusion 21. The number of the gentle structures may be one or more. For example, when the number of the gentle structures is one, the gentle structure may be arranged around the edge of the first protrusion 21 for one week; when the number of the gentle structures is multiple, the multiple gentle structures may be spaced apart at the edge of the first protrusion 21. The steepness of the convex boundary of the protrusion structure can be reduced by the gentle structure. The first electrode layer 31 is conformally provided on the protrusion structure 20, the light-emitting layer 30 conformally covers the first electrode layer 31, and the second electrode layer 32 is provided on the side of the light-emitting layer 30 away from the substrate 10. The light-emitting layer 30 emits light through the first electrode layer 31 and the second electrode layer 32. At least one gentle structure located at the edge of the first protrusion 21 enables the light-emitting layer 30 and / or the second electrode layer 32 to be gently transitionally connected between adjacent protrusion structures 20. The steepness of the convex boundary of the protrusion structure 20 can be reduced by the gentle structure, the steep climbing of the organic layer can be avoided, the breakage and puncture of the electrode can be prevented, the problems such as leakage current, weakening of blue light, high power consumption, and low brightness caused by electrode puncture can be avoided, and the display effect can be improved.

[0053] The substrate 10 may be made of a light-transmitting material. For example, inorganic glass, organic glass, a plastic substrate, or other organic material substrates. The substrate 10 may be rigid or flexible. A buffer layer or an insulating layer may also be included on the substrate 10 to provide a substrate surface with better performance. A plurality of spaced-apart protrusion structures 20 are provided on the substrate 10. The protrusion structure 20 may be made of materials such as silicon nitride and silicon oxide. The plurality of protrusion structures 20 may be evenly spaced apart, and the plurality of protrusion structures 20 may be arranged in an array.

[0054] The substrate 10 may have a first region, a second region, and a third region. Multiple spaced-apart convex structures 20 may be provided in each of the first region, the second region, and the third region, and the multiple convex structures 20 in each region may be arranged in an array. The shapes, sizes, and materials of the convex structures 20 in the first region, the second region, and the third region may be the same or different. For example, the shapes, sizes, and materials of the convex structures 20 in the first region, the second region, and the third region may be the same. The distribution densities of the convex structures 20 in the first region, the second region, and the third region may be the same or different, and the distribution densities of the convex structures 20 in different regions may be selected according to the requirements of the first electrode layer 31. The surface of the convex structure 20 has a first electrode layer 31, and the first electrode layer 31 may completely cover the surface of the convex structure 20. The shape of the first electrode layer 31 is consistent with the surface shape of the convex structure 20. The light-emitting layer 30 covers the first electrode layer 31, and the light-emitting layer 30 may be an organic layer. The substrate 10 may include a substrate 11, a connection layer 12, and connection posts 13. The substrate 11 may be a glass substrate, the connection layer 12 may be TiN, the connection layer 12 is electrically connected to the connection posts 13, a circuit may be provided on the substrate 11, the connection posts 13 may be electrically connected to the circuit, and the first electrode layer 31 may be electrically connected to the connection layer 12. Each convex structure 20 may be provided on the corresponding connection layer 12, and the connection posts 13 may be provided in the middle region of the connection layer 12. The light-emitting layer 30 may include a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer, and the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer may respectively correspond to different first electrode layers 31. The wavelengths of the light emitted by at least two of the first light-emitting layer, the second light-emitting layer, and the third light-emitting layer are different. For example, the first light-emitting layer may emit red light, the second light-emitting layer may emit green light, and the third light-emitting layer may emit blue light.

[0055] The second electrode layer 32 is provided on the side of the light-emitting layer 30 away from the substrate 10. The first electrode layer 31 may be an anode, and the second electrode layer 32 may be a cathode. The second electrode layer 32 may cover the entire surface of the light-emitting layer 30. The curved surface of the portion of the second electrode layer 32 located between adjacent convex structures 20 may be transitionally connected through a flat surface 33. The flat surface 33 may be a flat surface or a surface that is approximately flat. The organic layer evaporated on the first electrode layer 31 does not have a steep slope, and the second electrode layer 32 on the surface of the light-emitting layer 30 does not have a steep slope either. Thus, the curved surface of the portion of the second electrode layer 32 located between adjacent convex structures 20 can be transitionally connected through the flat surface 33. The transition connection position is gentle and does not have a steep slope, preventing the electrodes from breaking and puncturing.

[0056] The first electrode layer 31 can be an anode. The first electrode layer 31 can be a single-layer or stacked structure and can be made of materials such as metals and their mixtures like Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, or Cr, or can be made of metal oxide materials with conductivity such as ITO, IZO, or IGZO. The second electrode layer 32 can be a cathode, and the cathode can have semi-transmissive or transmissive properties. Optionally, the cathode can include Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF / Ca, LiF / Al, Mo, Ti, or their compounds or mixtures, such as a mixture of Ag and Mg. In some embodiments, the cathode can include a transparent conductive oxide (TCO). For example, the cathode can include tungsten oxide (W x O x ), titanium oxide (TiO2), indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium tin zinc oxide (ITZO), or magnesium oxide (MgO), etc. The specific materials of the first electrode layer 31 and the second electrode layer 32 can be selected according to actual situations.

[0057] In the light-emitting device according to an embodiment of the present invention, the convex structure 20 is provided to include a first convex 21 and at least one gentle structure located at the edge of the first convex 21. Through the gentle structure, the steepness of the convex boundary of the convex structure 20 can be reduced. Through at least one gentle structure located at the edge of the first convex 21, the light-emitting layer 30 and / or the second electrode layer 32 can be smoothly transitionally connected between adjacent convex structures 20, which can avoid a relatively steep slope of the organic layer, prevent the electrode from breaking and puncturing, and avoid problems such as leakage current, weakening of blue light, high power consumption, and low brightness caused by electrode puncturing, thereby improving the display effect.

[0058] In some embodiments, at least one gentle structure located at the edge of the first convex 21 includes a second convex 22, and the first convex 21 is disposed on the side of the second convex 22 away from the substrate 10. The orthographic projection of the first convex 21 on the substrate 10 is located within the orthographic projection of the second convex 22 on the substrate 10, and the edge of the orthographic projection of the first convex 21 on the substrate 10 is spaced from the edge of the orthographic projection of the second convex 22 on the substrate 10. Through the gentle structure, the steepness of the convex boundary of the convex structure can be reduced, so that the light-emitting layer 30 and / or the second electrode layer 32 can be smoothly transitionally connected between adjacent convex structures 20. The edge of the orthographic projection of the second convex 22 on the substrate 10 is spaced from the edge of the orthographic projection of the first convex 21 on the substrate 10, the edge surface of the convex structure 20 is gentle, and the edge surface region of the second convex 22 located outside the first convex 21 covers the first electrode layer 31. An organic layer can be covered on the first electrode layer 31 in this region. The gentle edge surface enables the organic layer not to have a steep slope during the evaporation process, and the evaporated organic layer does not have a steep slope.

[0059] As shown Figure 1 , Figure 2 , Figures 8 to 10 in the figure, the convex structure 20 may include a first convex 21 and a second convex 22. The first convex 21 may be disposed on a side of the second convex 22 away from the substrate 10. The surface of the first convex 21 may be a curved surface, and the curved surface is beneficial to increasing the surface area and can prevent sharp or angular structures from damaging the surrounding structures. The second convex 22 may be columnar or frustum-shaped. The second convex 22 may be generally frustum-shaped, and the surface of the first convex 21 may be a curved surface. The second convex 22 may be frustum-shaped, and the first convex 21 may be hemispherical or spherical-crowned. By providing the convex structure 20, the surface area can be increased, and the electrode area located on the surface of the convex structure 20 can be enlarged, thereby having a greater carrier injection ability. The shape, size, and material of each convex structure 20 may be the same or different. For example, the shape, size, and material of each convex structure 20 may be the same, which can simplify the manufacturing process. In some embodiments, the orthographic projection of the first convex 21 on the substrate 10 and the orthographic projection of the second convex 22 on the substrate 10 may be circular or elliptical, so that the overall structure of the second convex 22 and the first convex 21 is symmetrical. For example, the orthographic projection of the first convex 21 on the substrate 10 and the orthographic projection of the second convex 22 on the substrate 10 may be circular, and the diameter of the orthographic projection of the first convex 21 on the substrate 10 is smaller than the diameter of the orthographic projection of the second convex 22 on the substrate 10, so that there is a gap between the edge of the orthographic projection of the second convex 22 on the substrate 10 and the edge of the orthographic projection of the first convex 21 on the substrate 10, which is beneficial to the smoothness of the edge surface of the convex structure 20. The smooth edge surface makes the organic layer not climb steeply during the evaporation process.

[0060] Optionally, the orthographic projection of the first convex 21 on the substrate 10 and the orthographic projection of the second convex 22 on the substrate 10 may be circular and concentric. For example, the orthographic projection of the first convex 21 on the substrate 10 and the orthographic projection of the second convex 22 on the substrate 10 may be circular, the diameter of the orthographic projection of the first convex 21 on the substrate 10 is smaller than the diameter of the orthographic projection of the second convex 22 on the substrate 10, and the center of the orthographic projection of the first convex 21 on the substrate 10 coincides with the center of the orthographic projection of the second convex 22 on the substrate 10, so that there is a uniform gap between the edge of the orthographic projection of the first convex 21 on the substrate 10 and the edge of the orthographic projection of the second convex 22 on the substrate 10, which is beneficial to the smooth and symmetrical edge surface of the convex structure 20.

[0061] In some embodiments, the first protrusion 21 may be spherical-crowned. The spherical-crowned first protrusion 21 may be conducive to increasing the surface area, making the shape of the first electrode layer 31 on the surface of the first protrusion 21 symmetrical without sharp corners, with uniform stress and not easily damaging the surrounding structures. When the first electrode layer 31 is a reflective electrode, the reflection ability can be improved.

[0062] In some embodiments, the side surface of the second protrusion 22 may be a convex curved surface. Setting the side surface of the second protrusion 22 as a convex curved surface can increase the surface area. When the first electrode layer 31 is a reflective electrode, the reflection ability can be improved through the convex curved surface on the second protrusion 22. Setting the side surface of the second protrusion 22 as a convex curved surface has no sharp corners, with uniform stress and not easily damaging the surrounding structures.

[0063] Optionally, as Figure 2 shown, the adjacent protrusion structures 20 may be symmetrical about the flat surface 33. The flat surface 33 may be a plane and may be parallel to the substrate 10, so that the curved surfaces of the second electrode layer 32 located between the adjacent protrusion structures 20 can be smoothly transitionally connected to prevent the electrodes from breaking and puncturing.

[0064] In some embodiments, the top of the second protrusion 22 may have a first surface 23 which is parallel to the substrate 10. The bottom of the first protrusion 21 may be disposed on the first surface 23. The bottom of the first protrusion 21 may be a plane and may coincide with the first surface 23. The first surface 23 at the top of the second protrusion 22 and the surface at the bottom of the first protrusion 21 may both be circular or elliptical. For example, the first surface 23 at the top of the second protrusion 22 and the surface at the bottom of the first protrusion 21 may both be circular, and the diameters of the first surface 23 at the top of the second protrusion 22 and the surface at the bottom of the first protrusion 21 are equal, and the centers of the circles of the first surface 23 at the top of the second protrusion 22 and the surface at the bottom of the first protrusion 21 coincide.

[0065] In some embodiments, multiple protrusion structures 20 may be evenly distributed, and the shapes and sizes of each protrusion structure 20 are the same. For example, multiple protrusion structures 20 may be evenly distributed in an array, and the shapes, sizes, and materials of each protrusion structure 20 may all be the same, which is convenient for processing and preparation and simplifies the process.

[0066] In some other embodiments, the first electrode layer 31 may be a reflective electrode layer, such that the first electrode layer 31 may have a good reflection effect, enhancing the reflection effect of the first electrode layer 31 on light and improving the brightness of the device. The first electrode layer 31 may be a single-layer or stacked structure and may be made of a metal and its mixture materials such as Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, or Cr, or may be made of a conductive metal oxide material such as ITO, IZO, or IGZO. The surface of the first protrusion 21 may be a convex curved surface, and the side surface of the second protrusion 22 may be a convex curved surface, such that the first electrode layer 31 in this region may be a convex curved surface, which can improve the light reflection ability.

[0067] In an embodiment of the present invention, as Figure 1 , Figure 2 and Figure 9 shown, the first electrode layer 31 may include a reflective layer 311 and a light-transmissive conductive layer 312 which are stacked. The reflective layer 311 may be conductive, and the reflective layer 311 may be a stacked structure. For example, the reflective layer 311 may include a Ti / Al / Ti structure which is stacked. The first electrode layer 31 may be used as an anode, the conductive layer 312 may be indium tin oxide (ITO), and the reflective layer 311 is disposed close to the surface of the protrusion structure 20. By means of the reflective layer 311, the reflection effect of the first electrode layer 31 on light can be enhanced, and the brightness of the device can be improved. The surface of the first protrusion 21 may be a curved surface, and the side surface of the second protrusion 22 may be a convex curved surface. The curved surface is beneficial to increasing the surface area and can improve the light reflection effect.

[0068] In some embodiments, as Figure 2 shown, the light-emitting device may further include a packaging layer 40, and the packaging layer 40 may cover the second electrode layer 32. The packaging layer 40 may include a first packaging layer 41, a second packaging layer 42, and a third packaging layer 43 which are stacked. The first packaging layer 41 and the second packaging layer 42 may be inorganic layers, and the third packaging layer 43 may be an organic layer; or the first packaging layer 41 and the third packaging layer 43 may be inorganic layers, and the second packaging layer 42 may be an organic layer, and packaging is achieved through the stacked packaging layer.

[0069] The encapsulation layer 40 may include a first encapsulation layer 41, a second encapsulation layer 42, and a third encapsulation layer 43 which are stacked. For example, the first encapsulation layer 41 and the third encapsulation layer 43 may be made of inorganic materials, and the above-mentioned inorganic materials may be selected from at least one of silicon nitride, aluminum nitride, zirconium nitride, titanium nitride, hafnium nitride, tantalum nitride, silicon oxide, aluminum oxide, titanium oxide, tin oxide, cerium oxide, silicon oxynitride (SiON), and lithium fluoride. For another example, the second encapsulation layer 42 may be made of organic materials, and the above-mentioned organic materials may be at least one of acrylic acid resin, methacrylic acid resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, and perylene resin. Those skilled in the art can change the number of layers, materials, and structures of the encapsulation layer according to needs, and the present disclosure is not limited thereto.

[0070] Optionally, as Figure 2 shown, a flat layer 51 may be provided on the side of the encapsulation layer 40 away from the substrate 10. The flat layer 51 may be an inorganic layer, and the specific material may be selected according to the actual situation.

[0071] Optionally, as Figure 2 shown, the light-emitting device may further include: a color film layer 50. The color film layer 50 covers the encapsulation layer 40. The color film layer 50 may be provided on the side of the flat layer 51 away from the substrate 10. Unwanted light can be removed through the color film layer 50. The light-emitting layer 30 may include a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer. For example, the first light-emitting layer may emit red light, the second light-emitting layer may emit green light, and the third light-emitting layer may emit blue light. The area of the color film layer 50 corresponding to the first light-emitting layer may transmit red light, the area of the color film layer 50 corresponding to the second light-emitting layer may transmit green light, and the area of the color film layer 50 corresponding to the third light-emitting layer may transmit blue light. Unwanted light can be removed through the color film layer.

[0072] Optionally, as Figure 2 shown, the light-emitting device may further include: a light condensing structure 60. A light condensing structure 60 may be provided in the area of the color film layer 50 away from the substrate 10 corresponding to the convex structure 20. The light emitted by the light-emitting layer 30 can be condensed through the light condensing structure 60, and the brightness can be improved. The light condensing structure 60 may be hemispherical or spherical crown-shaped to achieve better light condensing effect. A flat layer 52 may be provided on the side of the color film layer 50 away from the substrate 10. An encapsulation layer 53 may be provided on the side of the flat layer 52 away from the substrate 10. The light condensing structure 60 may be provided on the side of the encapsulation layer 53 away from the substrate 10. The encapsulation layer 53 may include an organic layer or an inorganic layer, or may include a stacked organic layer and an inorganic layer. The specific structure of the encapsulation layer 53 may also be the same as the structure of the encapsulation layer 40, and may be specifically selected according to the actual situation.

[0073] During the preparation process, as Figures 3 to 9As shown, a first material layer a can be formed on the connection layer 12 of the substrate 10. The first material layer a can be a SiN material. A photoresist b is formed on the first material layer a, and the first material layer a is formed into a second protrusion 22 through etching. Then, a second material layer c covering the second protrusion 22 is formed on the substrate 10. The second material layer c can be a SiN material. A photoresist d is formed on the second material layer c, and the second material layer c is formed into a first protrusion 21 through etching. A first electrode layer 31 can be formed on the surface of the protrusion structure 20. The first electrode layer 31 can include a reflective layer 311 and a light-transmitting conductive layer 312 arranged in layers. The reflective layer 311 can include a Ti / Al / Ti structure arranged in layers, and the conductive layer 312 can be indium tin oxide (ITO). Then, a light-emitting layer 30 can be formed on the surface of the first electrode layer 31, a second electrode layer 32 is formed on the surface of the light-emitting layer 30, a packaging layer 40 is formed on the surface of the second electrode layer 32, a flat layer 51 can be formed on the surface of the packaging layer 40, a color film layer 50 can be formed on the side of the flat layer 51 away from the substrate 10, a flat layer 52 can be formed on the side of the color film layer 50 away from the substrate 10, a packaging layer 53 can be formed on the side of the flat layer 52 away from the substrate 10, and a light condensing structure 60 can be formed on the side of the packaging layer 53 away from the substrate 10.

[0074] The display panel according to the embodiment of the present invention includes the light-emitting device described in the above embodiment. The display panel having the light-emitting device described in the above embodiment can prevent problems such as leakage caused by electrode puncture, weakening of blue light, high power consumption, and low brightness, and improve the display effect.

[0075] The display device according to the embodiment of the present invention includes the display panel described in the above embodiment. The display device having the display panel described in the above embodiment can prevent problems such as leakage caused by electrode puncture, weakening of blue light, high power consumption, and low brightness, and improve the display effect.

[0076] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention, and all of them belong to the protection scope of the present invention.

Claims

1. A light-emitting device, characterized in that, Comprising: A substrate, on which a plurality of spaced-apart convex structures are provided, and the convex structures include a first convex and at least one gentle structure located at the edge of the first convex; A first electrode layer, conformally disposed on the convex structures; A light-emitting layer, the light-emitting layer conformally covering the first electrode layer; A second electrode layer, the second electrode layer being disposed on a side of the light-emitting layer away from the substrate; The at least one gentle structure located at the edge of the first convex enables the light-emitting layer and / or the second electrode layer to be gently transitionally connected between adjacent convex structures; The at least one gentle structure located at the edge of the first convex includes a second convex, and the first convex is disposed on a side of the second convex away from the substrate; a positive projection of the first convex on the substrate is located within a positive projection of the second convex on the substrate, and an edge of the positive projection of the first convex on the substrate is spaced from an edge of the positive projection of the second convex on the substrate; The first convex is spherical-crowned, and a side surface of the second convex is a convex curved surface.

2. The light-emitting device according to claim 1, characterized in that, The positive projection of the first convex on the substrate and the positive projection of the second convex on the substrate are circular or elliptical.

3. The light-emitting device according to claim 1, characterized in that, The positive projection of the first convex on the substrate and the positive projection of the second convex on the substrate are circular and have the same center.

4. The light-emitting device according to claim 1, characterized in that, The top of the second convex has a first surface, the first surface is parallel to the substrate, the bottom of the first convex is disposed on the first surface, and the bottom of the first convex coincides with the first surface.

5. The light-emitting device according to claim 1, characterized in that, The plurality of convex structures are uniformly distributed, and each convex structure has the same shape and size.

6. The light-emitting device according to claim 1, characterized in that, The first electrode layer is a reflective electrode layer.

7. The light-emitting device according to claim 6, characterized in that, The first electrode layer includes: A reflective layer and a light-transmissive conductive layer stacked, and the reflective layer is disposed on a surface close to the convex structures.

8. The light-emitting device according to claim 1, characterized in that, Further comprising: A packaging layer, the packaging layer covering the second electrode layer.

9. The light-emitting device according to claim 8, characterized in that, Further comprising: A color film layer, the color film layer covering the packaging layer.

10. The light-emitting device according to claim 9, characterized in that, Further comprising: A light condensing structure, the light condensing structure being provided in a region corresponding to the convex structures on a side of the color film layer away from the substrate.

11. A display panel, characterized in that, Comprising the light-emitting device according to any one of claims 1-10.

12. A display device, characterized in that, Comprising the display panel according to claim 11.

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