Display substrate and manufacturing method therefor, and display apparatus

Abstract

A display substrate and a manufacturing method therefor, and a display apparatus. The display substrate comprises a base substrate and a plurality of light-emitting devices located on the base substrate. The display substrate further comprises a reflective structure, the reflective structure comprises a conductive reflective structure and a non-conductive reflective structure, the orthographic projection of the conductive reflective structure on the base substrate overlaps with the orthographic projection of a light-emitting region of each light-emitting device on the base substrate, and the orthographic projection of the non-conductive reflective structure on the base substrate overlaps with the orthographic projection of a non-light-emitting region between two adjacent light-emitting devices on the base substrate. The non-conductive reflective structure can avoid pixel crosstalk and reflect light, which is incident into the non-light-emitting region, to a light-exit side, thereby improving the light-emitting efficiency.

Description

Display substrate, manufacturing method thereof and display device TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to a display substrate, a manufacturing method thereof and a display device. BACKGROUND

[0002] Organic Light Emitting Diode (OLED) display is gradually receiving more attention as a new type of flat panel display. As it has the characteristics of active light-emitting, high light-emitting brightness, high resolution, wide viewing angle, fast response speed, low energy consumption and flexibility, it has become a mainstream display product in the current market. With the continuous development of products, customers have higher and higher requirements for the resolution of products, and lower and lower requirements for power consumption. Therefore, it is necessary to develop high-efficiency, low-voltage and long-life OLED displays.

[0003] SUMMARY

[0004] At least one embodiment of the present disclosure provides a display substrate, comprising a substrate and a plurality of light-emitting devices on the substrate. The display substrate further comprises a reflective structure, the reflective structure comprises a conductive reflective structure and a non-conductive reflective structure, the conductive reflective structure overlaps the light-emitting area of each light-emitting device in the projection of the substrate, and the non-conductive reflective structure overlaps the non-light-emitting area between adjacent two light-emitting devices in the projection of the substrate.

[0005] For example, in the display substrate provided by an embodiment of the present disclosure, each light-emitting device comprises a first electrode and a light-emitting functional layer on the side of the first electrode away from the substrate, there is a gap between the first electrodes of adjacent two light-emitting devices of the plurality of light-emitting devices, the non-conductive reflective structure overlaps the gap in the projection of the substrate, and the non-conductive reflective structure comprises a plurality of non-conductive material layers with different refractive indexes which are alternately and stacked in the direction perpendicular to the substrate.

[0006] For example, in the display substrate provided by an embodiment of the present disclosure, the non-conductive reflective structure covers the gap in the projection of the substrate.

[0007] For example, in the display substrate provided by an embodiment of the present disclosure, the surface of the non-conductive reflective structure away from the substrate is flush with the surface of the first electrode of the light-emitting device away from the substrate.

[0008] For example, in the display substrate provided by an embodiment of the present disclosure, the surface of the non-conductive reflective structure close to the substrate is flush with the surface of the first electrode of the light emitting device close to the substrate.

[0009] For example, in the display substrate provided by an embodiment of the present disclosure, the non-conductive reflective structure overlaps the first electrode of the light emitting device in the orthographic projection of the substrate.

[0010] For example, in the display substrate provided by an embodiment of the present disclosure, the overlapping area of the non-conductive reflective structure and the first electrode of the light emitting device in the orthographic projection of the substrate is not less than 70% of the area of the first electrode of the light emitting device in the orthographic projection of the substrate.

[0011] For example, in the display substrate provided by an embodiment of the present disclosure, the distance between the non-conductive reflective structure and the first electrode of the light emitting device in the direction perpendicular to the substrate is equal to zero.

[0012] For example, in the display substrate provided by an embodiment of the present disclosure, the plurality of light emitting devices includes a first light emitting device and a second light emitting device, the first light emitting device is configured to emit light of a first color, the second light emitting device is configured to emit light of a second color, the first color and the second color are different colors, the distance between the first electrodes of adjacent first light emitting devices and second light emitting devices is a first distance, the non-conductive reflective structure includes a plurality of reflective portions, the plurality of reflective portions includes a first reflective portion and a second reflective portion, the first reflective portion is closer to the first light emitting device than the second reflective portion, the second reflective portion is closer to the second light emitting device than the first reflective portion, the orthographic projection of the first reflective portion and the orthographic projection of the first distance on the substrate both overlap, the thickness of the plurality of non-conductive material layers of the first reflective portion is equal to one fourth of the peak wavelength of the light of the first color, and the thickness of the plurality of non-conductive material layers of the second reflective portion is equal to one fourth of the peak wavelength of the light of the second color.

[0013] For example, in the display substrate provided by an embodiment of the present disclosure, the plurality of light emitting devices further includes a third light emitting device, the third light emitting device is configured to emit light of a third color, the third color is different from the first color and the second color, the distance between the first electrodes of adjacent first light emitting devices and third light emitting devices is a second distance, the distance between the first electrodes of adjacent second light emitting devices and third light emitting devices is a third distance,

[0014] The plurality of reflective portions of the non-conductive reflective structure further includes a third reflective portion closer to the third light emitting device than the first reflective portion and the second reflective portion, the first reflective portion in the orthographic projection of the substrate further overlaps the second spacing in the orthographic projection of the substrate, the second reflective portion in the orthographic projection of the substrate further overlaps the third spacing in the orthographic projection of the substrate, the third reflective portion in the orthographic projection of the substrate overlaps both the second spacing and the third spacing in the orthographic projection of the substrate, and a thickness of the plurality of non-conductive material layers of the third reflective portion is a quarter of a peak wavelength of the light of the third color.

[0015] For example, in the display substrate provided by an embodiment of the present disclosure, a gap between two adjacent reflective portions in the plurality of reflective portions is equal to zero.

[0016] For example, in the display substrate provided by an embodiment of the present disclosure, two adjacent reflective portions in the plurality of reflective portions in the orthographic projection of the substrate include edges that at least partially overlap.

[0017] For example, in the display substrate provided by an embodiment of the present disclosure, an area of the first electrode in the orthographic projection of the substrate of the first light emitting device is greater than an area of the first electrode in the orthographic projection of the substrate of the second light emitting device, at least partially overlapping edges of the first reflective portion and the second reflective portion in the orthographic projection of the substrate are first edges, a minimum distance between the first edges and the first electrode in the orthographic projection of the substrate of the first light emitting device is a first distance, a minimum distance between the first edges and the first electrode in the orthographic projection of the substrate of the second light emitting device is a second distance, and the first distance is greater than the second distance.

[0018] For example, in the display substrate provided by an embodiment of the present disclosure, thicknesses of the plurality of reflective portions are equal.

[0019] For example, in the display substrate provided by an embodiment of the present disclosure, an area of the first electrode in the orthographic projection of the substrate of the first light emitting device is greater than an area of the first electrode in the orthographic projection of the substrate of the second light emitting device, an area of the first reflective portion in the orthographic projection of the substrate is greater than an area of the second reflective portion in the orthographic projection of the substrate, and / or a thickness of the first reflective portion is greater than a thickness of the second reflective portion.

[0020] For example, in the display substrate provided by an embodiment of the present disclosure, outer edges of the plurality of reflective portions in the orthographic projection of the substrate have substantially the same shape.

[0021] For example, in the display substrate provided by an embodiment of the present disclosure, the outer edge of the orthographic projection of each of the reflection portions has substantially the same shape as the outer edge of the orthographic projection of the first electrode of the light emitting device closest to the reflection portion.

[0022] For example, in the display substrate provided by an embodiment of the present disclosure, the shape of the orthographic projection of each of the reflection portions comprises a ring shape.

[0023] For example, in the display substrate provided by an embodiment of the present disclosure, the first electrode of each of the light emitting devices comprises the conductive reflection structure and a transparent sub-electrode located on the side of the conductive reflection structure away from the substrate.

[0024] For example, in the display substrate provided by an embodiment of the present disclosure, the display substrate further comprises a driving circuit layer located on the side of the plurality of light emitting devices close to the substrate and configured to drive the plurality of light emitting devices to emit light; a planarization layer located between the driving circuit layer and the plurality of light emitting devices; and a connection structure located between the driving circuit layer and the plurality of light emitting devices and connecting the driving circuit layer and the plurality of light emitting devices, wherein the non-conductive reflection structure is located on the planarization layer.

[0025] For example, in the display substrate provided by an embodiment of the present disclosure, the light emitting device further comprises a second electrode located on the side of the light emitting functional layer away from the substrate, and the light emitting functional layer of the light emitting device is an organic electroluminescent functional layer.

[0026] For example, in the display substrate provided by an embodiment of the present disclosure, the first electrode of the light emitting device includes the conductive reflective structure and a transparent sub-electrode located on a side of the conductive reflective structure away from the substrate, a distance between a surface of the conductive reflective structure away from the substrate and a surface of the second electrode close to the substrate is a cavity length of the light emitting device, the plurality of light emitting devices includes a first light emitting device and a second light emitting device, the first light emitting device is configured to emit light of a first color, the second light emitting device is configured to emit light of a second color, a wavelength of the light of the second color is greater than a wavelength of the light of the first color, the cavity length of the second light emitting device is greater than the cavity length of the first light emitting device, a surface of the non-conductive reflective structure away from the substrate is flush with a surface of the first electrode of the light emitting device away from the substrate, the non-conductive reflective structure includes a plurality of reflective portions, the plurality of reflective portions includes a first reflective portion and a second reflective portion, the first reflective portion is closer to the first light emitting device than the second reflective portion, the second reflective portion is closer to the second light emitting device than the first reflective portion, the interval between the first electrodes of the adjacent first light emitting device and the second light emitting device is a first interval, the first reflective portion and the second reflective portion both overlap the first interval in a projection on the substrate, a distance between the surface of the first electrode of the light emitting device away from the substrate and the substrate is a top height of the first electrode, a distance between the surface of the reflective portion away from the substrate and the substrate is a top height of the reflective portion, the top height of the first electrode of the second light emitting device is greater than the top height of the first electrode of the first light emitting device, and the top height of the second reflective portion is greater than the top height of the first reflective portion.

[0027] For example, in the display substrate provided by an embodiment of the present disclosure, a surface of the reflective portion close to the substrate is flush with a surface of the first electrode close to the substrate, and a thickness of the second reflective portion is greater than a thickness of the first reflective portion.

[0028] For example, in the display substrate provided by an embodiment of the present disclosure, the light emitting device further includes an optical adjustment layer located between the transparent sub-electrode and the conductive reflective structure.

[0029] For example, the display substrate provided by an embodiment of the present disclosure further includes an isolation structure, wherein the isolation structure is located between the light emitting functional layers of two adjacent light emitting devices of the plurality of light emitting devices, and the non-conductive reflective structure is located on a side of the isolation structure close to the substrate.

[0030] At least one embodiment of the present disclosure provides a display device including the display substrate described in any one of the above.

[0031] The manufacturing method of the display substrate provided by the embodiment of the present disclosure includes: forming the first electrodes of the plurality of light emitting devices; alternately depositing a plurality of non-conductive materials with different refractive indexes on a side of the first electrodes away from the substrate to form a first material layer including a plurality of non-conductive material layers, wherein the thickness of the plurality of non-conductive materials with different refractive indexes of the first material layer is one quarter of the peak wavelength of the light of the first color, the first material layer includes a first sub-part located on the side of the first electrodes away from the substrate and a second sub-part located in the first interval; removing the first sub-part and retaining the second sub-part; performing a patterning process on the second sub-part to form the first reflective part located in the first interval; alternately depositing a plurality of non-conductive materials with different refractive indexes on a side of the first electrodes away from the substrate to form a second material layer including a plurality of non-conductive material layers, wherein the thickness of the plurality of non-conductive materials with different refractive indexes of the second material layer is one quarter of the peak wavelength of the light of the second color, the second material layer includes a third sub-part located on the side of the first electrodes and the first reflective part away from the substrate and the second reflective part located in the first interval, the first reflective part is closer to the first light emitting device than the second reflective part, and the second reflective part is closer to the second light emitting device than the first reflective part; and removing the third sub-part and retaining the second reflective part.

[0032] The non-conductive reflective structure of the display substrate provided by the embodiment of the present disclosure can avoid pixel crosstalk and reflect the light entering the interval to the light-emitting side, thereby improving the light-emitting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only related to some embodiments of the present disclosure, but not limit the present disclosure.

[0034] FIG. 1 is a structural schematic diagram of a display substrate;

[0035] FIG. 2 is a structural schematic diagram of another display substrate;

[0036] FIG. 3 is a structural schematic diagram of another display substrate;

[0037] FIG. 4 is a structural schematic diagram of another display substrate;

[0038] FIG. 5 is a structural schematic diagram of a display substrate provided by an embodiment of the present disclosure;

[0039] FIG. 6 is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure;

[0040] FIG. 7 is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure;

[0041] FIG. 8 is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure;

[0042] FIG. 9A is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure;

[0043] FIG. 9B is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure;

[0044] FIG. 10 is a top view schematic diagram of a display substrate provided by an embodiment of the present disclosure;

[0045] FIG. 11 is another top view schematic diagram of a display substrate provided by an embodiment of the present disclosure;

[0046] FIG. 12 is another top view schematic diagram of a display substrate provided by an embodiment of the present disclosure;

[0047] FIG. 13 is a schematic diagram of a display device provided by an embodiment of the present disclosure;

[0048] FIG. 14 is a flow schematic diagram of a manufacturing method of a display substrate provided by an embodiment of the present disclosure; and

[0049] FIGS. 15 to 25 are structural schematic diagrams of each step of another manufacturing method of a display substrate provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] In order to make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of, rather than all of, the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without any inventive effort fall within the protection scope of the present disclosure.

[0051] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the meanings as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first", "second", and similar terms are used to distinguish one element from another, and are not necessarily used to describe a sequential or chronological order. The terms "comprises", "comprising", "includes", "including" and the like can be used in the sense of "including but not limited to". The terms "connected", "coupled" or "linked" and the like can be used to describe a physical or mechanical connection, electrical connection, or logical connection between or among two or more elements.

[0052] Unless otherwise defined, the terms "parallel", "perpendicular", "same" and the like used in the embodiments of the present disclosure include the strict sense of "parallel", "perpendicular", "same" and the like, and also include the case of "approximately parallel", "approximately perpendicular", "approximately same" and the like with a certain error. For example, the "approximately" described above can mean that the difference of the compared objects is within 10% or 5% of the average value of the compared objects. In the embodiments of the present disclosure, when the number of a component or element is not specifically indicated, it means that the component or element can be one or more, or can be understood as at least one. "At least one" means one or more, and "multiple" means at least two. In the embodiments of the present disclosure, "same layer" refers to the relationship between multiple film layers formed by the same material after the same step (for example, one patterning process). Here, "same layer" does not always mean that the thickness of the multiple film layers is the same or the height of the multiple film layers in the cross-sectional view is the same.

[0053] The basic structure of a top-emitting OLED micro display device includes an anode, an electroluminescent layer, and a cathode. The anode provides holes, and the cathode provides electrons. The holes and electrons combine in the electroluminescent layer to form excitons, which excite the electroluminescent layer to emit light.

[0054] Product efficiency is one of the most important indicators for evaluating micro displays. There are mainly two measures to improve the light-emitting efficiency of micro displays: one is to improve the internal quantum efficiency of the electroluminescent layer, and the other is to improve the light extraction under the premise of a certain internal quantum efficiency, so as to improve the external quantum efficiency, which has become a direction that the industry continues to explore. Generally, the external quantum efficiency can be improved by increasing the anode reflectivity, increasing the packaging transmittance, and placing a microlens. In recent years, increasing the pixel aperture ratio and increasing the anode reflection area have also become a direction that the industry tries to explore.

[0055] FIG. 1 is a structural schematic diagram of a display substrate. As shown in FIG. 1, the display substrate has a gap 03 between two adjacent sub-pixels 01 and 02. Some of the light emitted from the sub-pixels 01 and 02 will enter the gap 03. Reflecting the part of the light can improve the light-emitting efficiency of the sub-pixels.

[0056] FIG. 2 is a structural schematic diagram of another display substrate. As shown in FIG. 2, a metal (Al or Ag) reflecting layer 04 is arranged between two adjacent sub-pixels 01 and 02 of the display substrate. The metal reflecting layer 04 can be located between the two sub-pixels, or connected to the anode or cathode of the sub-pixels. The metal reflecting layer 04 reflects light between the two sub-pixels to increase the reflection area. However, when the pixel driving circuit of the sub-pixel 01 is turned on and the pixel driving circuit of the adjacent sub-pixel 02 is turned off, the electrode 021 of the sub-pixel 02 will be affected by the charge induction of the metal reflecting layer 04 and induce positive charges, causing the sub-pixel 02 to turn on and light up in advance, resulting in pixel crosstalk.

[0057] FIG. 3 is a structural schematic diagram of another display substrate. As shown in FIG. 3, the metal reflecting layer 04 is connected to the electrode 011 of the sub-pixel 01 through a connecting structure. However, when the pixel driving circuit of the sub-pixel 01 is turned on and the pixel driving circuit of the adjacent sub-pixel 02 is turned off, the electrode 021 of the sub-pixel 02 will be affected by the charge induction of the metal reflecting layer 04 and induce positive charges, causing the sub-pixel 02 to turn on and light up in advance, resulting in pixel crosstalk.

[0058] FIG. 4 is a structural schematic diagram of another display substrate. As shown in FIG. 4, increasing the distance between the metal reflecting layer 04 and the electrode 021 of the sub-pixel 02 can reduce the generation of induced charges to some extent, and reduce the crosstalk between the sub-pixel 01 and the sub-pixel 02. However, as the distance between the metal reflecting layer 04 and the electrode 011 of the sub-pixel 01 and the distance between the metal reflecting layer 04 and the electrode 021 of the sub-pixel 02 increase, more light will leak from the gap between them, making the reflection effect of the metal reflecting layer 04 worse.

[0059] Embodiments of the present disclosure provide a display substrate, a manufacturing method thereof, and a display device. The display substrate includes a substrate and a plurality of light emitting devices on the substrate. The display substrate further includes a reflective structure, the reflective structure including a conductive reflective structure and a non-conductive reflective structure, the conductive reflective structure in a projection of the substrate overlapping with a light emitting region of each of the light emitting devices in the projection of the substrate, and the non-conductive reflective structure in the projection of the substrate overlapping with a non-light emitting region between two adjacent light emitting devices in the projection of the substrate.

[0060] In the display substrate provided in the embodiments of the present disclosure, the non-conductive reflective structure is non-conductive, which can avoid crosstalk between pixels caused by charge induction. The light-emitting device has a light-emitting side, which is located on the side of the light-emitting device away from the substrate. A part of the light emitted by the light-emitting device will enter the non-light-emitting area between adjacent light-emitting devices. The non-conductive reflective structure reflects the part of the light entering the non-light-emitting area to the light-emitting side, thereby improving the light-emitting efficiency of the light-emitting device. Therefore, the non-conductive reflective structure not only can avoid crosstalk between pixels, but also has better reflection performance, better reflects the light between adjacent light-emitting devices, and improves the light-emitting efficiency of the light-emitting device.

[0061] In the following, the display substrate, the manufacturing method thereof and the display device provided in the embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0062] The present disclosure provides a display substrate. FIG. 5 is a schematic structural diagram of a display substrate provided in an embodiment of the present disclosure. As shown in FIG. 5, the display substrate 100 includes a substrate 110 and a plurality of light-emitting devices 120 located on the substrate 110. The display substrate 100 further includes a reflective structure, which includes a conductive reflective structure 121a and a non-conductive reflective structure 130. The conductive reflective structure 121a is overlapped with the light-emitting area R01 of each light-emitting device 120 in the projection of the substrate 110. The non-conductive reflective structure 130 is overlapped with the non-light-emitting area between two adjacent light-emitting devices 120 in the projection of the substrate 110.

[0063] The light-emitting area of the light-emitting device can be an area defined by a pixel defining opening. The pixel defining opening can be defined by a pixel defining layer or an isolation structure. FIG. 5 schematically shows that the pixel defining opening is defined by an isolation structure 140. In order to clearly display other structures, FIG. 5 only shows the light-emitting area R01 of one light-emitting device 120, and the non-light-emitting area is not labeled. The light-emitting area R01 of two adjacent light-emitting devices is a non-light-emitting area. Part of the light emitted by the light-emitting functional layer of the light-emitting device will enter the non-light-emitting area.

[0064] In the display substrate provided in the embodiments of the present disclosure, the non-conductive reflective structure is non-conductive, which can avoid crosstalk between pixels caused by charge induction. The light-emitting device has a light-emitting side, which is located on the side of the light-emitting device away from the substrate. A part of the light emitted by the light-emitting device will enter the non-light-emitting area between adjacent light-emitting devices. The non-conductive reflective structure reflects the part of the light entering the non-light-emitting area to the light-emitting side, thereby improving the light-emitting efficiency of the light-emitting device. Therefore, the non-conductive reflective structure not only can avoid crosstalk between pixels, but also has better reflection performance, better reflects the light between adjacent light-emitting devices, and improves the light-emitting efficiency of the light-emitting device.

[0065] In some examples, as shown in FIG. 5, each light emitting device 120 includes a first electrode 121 and a light emitting functional layer 122 located on a side of the first electrode 121 away from the substrate substrate 110. The non-conductive reflective structure 130 includes a plurality of non-conductive material layers with different refractive indexes alternately arranged in a direction perpendicular to the substrate substrate 110. The plurality of non-conductive material layers are schematically shown as including a plurality of first non-metal layers 1301 and a plurality of second non-metal layers 1302 alternately arranged in a direction perpendicular to the substrate substrate 110. The refractive index of each first non-metal layer 1301 is greater than the refractive index of each second non-metal layer 1302, and the thickness of each first non-metal layer 1301 and each second non-metal layer 1302 of the non-conductive reflective structure 130 is one fourth of the peak wavelength of the light emitted by the light emitting device 120. However, the number, material, refractive index, etc. of the plurality of non-conductive material layers are not limited in the embodiments of the present disclosure.

[0066] The first electrode 121 of each of the plurality of light emitting devices 120 has a spacing S01 between adjacent two light emitting devices 120. The normal projection of the non-conductive reflective structure 130 on the substrate substrate 110 overlaps the normal projection of the spacing S01 on the substrate substrate 110.

[0067] In some examples, as shown in FIG. 5, the display substrate 100 further includes an isolation structure 140 located on the substrate substrate 110, the isolation structure 140 is located between the light emitting functional layers 122 of adjacent two light emitting devices 120 of the plurality of light emitting devices 120, and the non-conductive reflective structure 130 is located on a side of the isolation structure 140 close to the substrate substrate 110.

[0068] In the display substrate provided by the embodiments of the present disclosure, the material of the non-conductive reflective structure is a non-metal material, which can avoid crosstalk between pixels caused by charge induction. For example, the non-conductive reflective structure is alternately arranged by non-metal layers with different refractive indexes, and the thickness of each layer is one fourth of the peak wavelength of the light, so that Fresnel reflection occurs at each interface of the non-conductive reflective structure, the reflectivity of the light is improved, and the light can be better reflected when passing through the non-conductive reflective structure. The light emitting device has an outlight side located on a side of the light emitting functional layer away from the first electrode, and the light emitted by the light emitting functional layer of the light emitting device will partially enter the spacing between adjacent light emitting devices. The non-conductive reflective structure reflects the part of the light entering the spacing to the outlight side, thereby improving the light emitting efficiency of the light emitting device. Therefore, the non-conductive reflective structure not only can avoid crosstalk between pixels, but also has better reflection performance, better reflects the light between adjacent light emitting devices, and improves the light emitting efficiency of the light emitting device.

[0069] In some examples, as shown in FIG. 5, the non-conductive reflective structure 130 covers the interval S01 in the orthographic projection of the substrate 110. Thus, the non-conductive reflective structure 130 has a larger reflective area and can cover the interval S01, and better reflects the light between the adjacent light emitting devices 120.

[0070] In some examples, as shown in FIG. 5, the surface of the non-conductive reflective structure 130 away from the substrate 110 is flush with the surface of the first electrode 121 of the light emitting device 120 away from the substrate 110. Thus, not only can the light between the adjacent light emitting devices 120 be better reflected, avoiding light leakage from the interval S01, but the process of making the non-conductive reflective structure 130 can be made simpler. For example, the first electrode can be formed first, and then the non-conductive reflective structure is formed, and the non-conductive reflective structure higher than the first electrode is removed by a chemical mechanical planarization process, which is simple in process, has a higher yield and product consistency.

[0071] In some examples, as shown in FIG. 5, the surface of the non-conductive reflective structure 130 close to the substrate 110 is flush with the surface of the first electrode 121 of the light emitting device 120 close to the substrate 110. Thus, the process of making the non-conductive reflective structure 130 can be made simpler. For example, the first electrode and the non-conductive reflective structure can be formed on the same planarization layer, without the need to form additional planarization layers of other heights, which is simple in process.

[0072] For example, as shown in FIG. 5, the non-conductive reflective structure 130 can be of equal thickness. For example, this can make the process simpler, have a higher yield and product consistency.

[0073] For example, as shown in FIG. 5, the surface of the non-conductive reflective structure 130 close to the substrate 110 is in the same plane. For example, the surface of the non-conductive reflective structure 130 away from the substrate 110 is in the same plane. The reflective surface being a plane can better design the light path, for example, can avoid color patches or bright spots and other problems, and can make the light distribution more uniform. In addition, the reflective surface being a plane can more easily control the thickness of each non-metal layer in the non-conductive reflective structure, making the reflective performance of the non-conductive reflective structure more stable.

[0074] In some examples, as shown in FIG. 5, the plurality of light emitting devices 120 includes a first light emitting device 1201 and a second light emitting device 1202, the first light emitting device 1201 is configured to emit light of a first color, the second light emitting device 1202 is configured to emit light of a second color, the first color and the second color are different colors. The interval S01 between the first electrodes 121 of the adjacent first light emitting device 1201 and the second light emitting device 1202 is a first interval S011. The non-conductive reflective structure 130 includes a plurality of reflective portions 131, the plurality of reflective portions 131 includes a first reflective portion 1311 and a second reflective portion 1312, the first reflective portion 1311 is closer to the first light emitting device 1201 than the second reflective portion 1312, the second reflective portion 1312 is closer to the second light emitting device 1202 than the first reflective portion 1311. The first reflective portion 1311 and the second reflective portion 1312 both overlap the first interval S011 in the orthographic projection of the substrate 110. In the figure, the plurality of non-metal material layers of the first reflective portion 1311 are shown to include a first non-metal layer 1301 and a second non-metal layer 1302, the thicknesses of both are a quarter of the peak wavelength of the light of the first color. In the figure, the plurality of non-metal material layers of the second reflective portion 1312 are shown to include a first non-metal layer 1301 and a second non-metal layer 1302, the thicknesses of both are a quarter of the peak wavelength of the light of the second color. The number, material, refractive index, etc. of the plurality of non-metal material layers of the first reflective portion 1311 and the second reflective portion 1312 are not specifically limited in the embodiments of the present disclosure.

[0075] In this example, the non-conductive reflective structure 130 includes a first reflective portion 1311 and a second reflective portion 1312, the thickness of each layer of the first reflective portion 1311 is a quarter of the peak wavelength of the light of the first color emitted by the first light emitting device 1201, the thickness of each layer of the second reflective portion 1312 is a quarter of the peak wavelength of the light of the second color emitted by the second light emitting device 1202. Thus, the first reflective portion 1311 has better reflection performance for light of the first color and can better reflect light of the first color within the first interval S011; the second reflective portion 1312 has better reflection performance for light of the second color and can better reflect light of the second color within the first interval S011. In this way, the first reflective portion 1311 and the second reflective portion 1312 can more effectively reflect light in the first interval S011 between the first electrodes 121 of the first light emitting device 1201 and the second light emitting device 1202, and more effectively improve the light emitting efficiency of the light emitting device 120. In addition, when reflecting light of the corresponding color, the reflectivity of each reflective portion for light with a wavelength close to the peak wavelength is high, which also plays a filtering role, making the color of the color point purer, and further making the color gamut of the display substrate larger.

[0076] In some examples, as shown in FIG. 5, the plurality of light emitting devices 120 further comprises a third light emitting device 1203, the third light emitting device 1203 is configured to emit light of a third color, the third color is different from both the first color and the second color. The spacing S01 between the first electrodes 121 of the adjacent second light emitting device 1202 and the third light emitting device 1203 is a third spacing S013. The plurality of reflecting portions 131 of the non-conductive reflecting structure 130 further comprises a third reflecting portion 1313, the third reflecting portion 1313 is closer to the third light emitting device 1203 than the first reflecting portion 1311 and the second reflecting portion 1312. The orthographic projection of the second reflecting portion 1312 on the substrate 110 also overlaps the orthographic projection of the third spacing S013 on the substrate 110, and the orthographic projection of the third reflecting portion 1313 on the substrate 110 overlaps both the orthographic projection of the third spacing S013 on the substrate 110. The plurality of non-metallic material layers of the third reflecting portion 1313 is schematically shown as comprising a first non-metallic layer 1301 and a second non-metallic layer 1302, both of which have a thickness of a quarter of the peak wavelength of the light of the third color.

[0077] In this example, the non-conductive reflecting structure 130 further comprises a third reflecting portion 1313, each layer of the third reflecting portion 1313 has a thickness of a quarter of the peak wavelength of the light of the third color emitted by the third light emitting device 1203, and the third reflecting portion 1313 has better reflecting performance for the light of the third color, and can better reflect the light of the third color in the third spacing S013. Thus, the second reflecting portion 1312 and the third reflecting portion 1313 can more effectively reflect the light of the third spacing S013 between the first electrodes 121 of the second light emitting device 1202 and the third light emitting device 1203, and more effectively improve the light emitting efficiency of the light emitting device 120.

[0078] In some examples, as shown in FIG. 5, the gap between two adjacent reflecting portions 131 in the plurality of reflecting portions 131 is equal to zero. Thus, the reflecting portion 131 can have a larger reflecting area, and can better cover the spacing S01 and reflect the light incident into the spacing S01, avoiding light leakage from the spacing S01.

[0079] In some examples, as shown in FIG. 5, the plurality of reflecting portions 131 have equal thicknesses. Thus, the process of manufacturing the reflecting portion 131 can be made simpler. The embodiments of the present disclosure do not limit the thickness of the plurality of reflecting portions 131.

[0080] For example, as shown in FIG. 5, the surfaces of the plurality of reflecting portions 131 close to the substrate 110 are all in the same plane. For example, the surfaces of the plurality of reflecting portions 131 away from the substrate 110 are all in the same plane.

[0081] For example, as shown in FIG. 5, the surface of the first reflective portion 1311 close to the substrate 110 is flush with the surface of the first electrode 121 of the first light emitting device 1201 close to the substrate 110. For example, the surface of the first reflective portion 1311 away from the substrate 110 is flush with the surface of the first electrode 121 of the first light emitting device 1201 away from the substrate 110.

[0082] For example, as shown in FIG. 5, the surface of the second reflective portion 1312 close to the substrate 110 is flush with the surface of the first electrode 121 of the second light emitting device 1202 close to the substrate 110. For example, the surface of the second reflective portion 1312 away from the substrate 110 is flush with the surface of the first electrode 121 of the second light emitting device 1202 away from the substrate 110.

[0083] For example, as shown in FIG. 5, the surface of the third reflective portion 1313 close to the substrate 110 is flush with the surface of the first electrode 121 of the third light emitting device 1203 close to the substrate 110. For example, the surface of the third reflective portion 1313 away from the substrate 110 is flush with the surface of the first electrode 121 of the third light emitting device 1203 away from the substrate 110.

[0084] In some examples, as shown in FIG. 5, the first electrode 121 of each light emitting device 120 includes a transparent sub-electrode 121a and a conductive reflective structure 121b located on the side of the transparent sub-electrode 121a close to the substrate 110.

[0085] For example, the material of the conductive reflective structure 121b includes metal and is configured to reflect light emitted from the light emitting functional layer 122. The conductive reflective structure 121b can reflect light emitted from the light emitting functional layer 122, improving the light emitting efficiency of the light emitting device 120.

[0086] In some examples, as shown in FIG. 5, the display substrate 100 further includes a driving circuit layer 150, a planarization layer 160, and a connection structure 170. The driving circuit layer 150 is located on the side of the plurality of light emitting devices 120 close to the substrate 110 and is configured to drive the plurality of light emitting devices 120 to emit light, the planarization layer 160 is located between the driving circuit layer 150 and the plurality of light emitting devices 120, the connection structure 170 is located between the driving circuit layer 150 and the plurality of light emitting devices 120, and the connection structure 170 connects the driving circuit layer 150 and the plurality of light emitting devices 120. For example, the planarization layer can include a plurality of sub-planarization layers, which will not be described one by one here.

[0087] In some examples, as shown in FIG. 5, the non-conductive reflective structure 130 is located on the planarization layer 160. For example, the non-conductive reflective structure 130 is directly formed on the planarization layer 160. Thus, the thickness of each film layer in the non-conductive reflective structure 130 can be guaranteed, and the reflective performance of the non-conductive reflective structure can be guaranteed.

[0088] In some examples, as shown in FIG. 5, the light-emitting device 120 further includes a second electrode 123 located on the side of the light-emitting functional layer 122 away from the substrate 110, and the light-emitting functional layer 122 of the light-emitting device 120 is an organic electroluminescent functional layer 122.

[0089] FIG. 6 is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure. As shown in FIG. 6, the thicknesses of different reflective portions 131 can be unequal. The thickness of the first reflective portion 1311 is unequal to the thicknesses of the second reflective portion 1312 and the third reflective portion 1313, and the thicknesses of the second reflective portion 1312 and the third reflective portion 1313 are equal. However, the present disclosure is not limited thereto. For example, the thickness of any one of the first reflective portion, the second reflective portion, and the third reflective portion is unequal to the thicknesses of the other two reflective portions. For example, the thicknesses of the three reflective portions of the first reflective portion, the second reflective portion, and the third reflective portion are all unequal.

[0090] In some examples, as shown in FIG. 6, the area of the first electrode 121 of the first light-emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the first electrode 121 of the second light-emitting device 1202 in the orthographic projection of the substrate 110, and the thickness of the first reflective portion 1311 is greater than the thickness of the second reflective portion 1312. The greater the thickness of the reflective portion 131, the better the reflective performance. By setting the reflective portions 131 with different thicknesses, the light-emitting efficiency between different light-emitting devices 120 can be better balanced, so that the display substrate 100 has better display effect and higher display life. For example, the thickness of the reflective portion can also be designed according to the light-emitting efficiency of each light-emitting device 120. For example, the light-emitting efficiency of the first light-emitting device 1201 is less than the light-emitting efficiency of the second light-emitting device 1202 and the third light-emitting device 1203, and the thickness of the first reflective portion 1311 is greater than the thicknesses of the second reflective portion 1312 and the third reflective portion 1313.

[0091] In some examples, as shown in FIG. 6, the area of the light-emitting functional layer 122 of the first light-emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the light-emitting functional layer 122 of the second light-emitting device 1202 in the orthographic projection of the substrate 110, and the thickness of the first reflective portion 1311 is greater than the thickness of the second reflective portion 1312.

[0092] In some examples, as shown in FIG. 6, each reflective portion 131 is of equal thickness. For example, the surface of each reflective portion 131 close to the substrate 110 is planar. For example, the surface of each reflective portion 131 away from the substrate 110 is planar.

[0093] FIG. 7 is a structural schematic diagram of another display substrate provided by an embodiment of the present disclosure. As shown in FIG. 7, the non-conductive reflective structure 130 overlaps the first electrode 121 of the light emitting device 120 in the projection of the substrate 110. Thus, the non-conductive reflective structure 130 has a larger reflective area and better reflects light between adjacent light emitting devices 120.

[0094] For example, as shown in FIG. 7, the non-conductive reflective structure 130 is located on the side of the first electrode 121 close to the display substrate 100.

[0095] In some examples, as shown in FIG. 7, the overlapping area of the non-conductive reflective structure 130 in the projection of the substrate 110 and the first electrode 121 of the light emitting device 120 in the projection of the substrate 110 is not less than 70% of the area of the first electrode 121 of the light emitting device 120 in the projection of the substrate 110. Thus, the non-conductive reflective structure 130 not only better reflects light between adjacent light emitting devices 120, but also reflects light on the side of the first electrode 121 close to the substrate 110 to the light emitting side of the light emitting device, further improving the light emitting efficiency of the light emitting device.

[0096] In some examples, as shown in FIG. 7, the display substrate 100 further includes a driving circuit layer 150, a planarization layer 160, and a connecting structure 170. The driving circuit layer 150 is located on the side of the plurality of light emitting devices 120 close to the substrate 110 and is configured to drive the plurality of light emitting devices 120 to emit light. The planarization layer 160 is located between the driving circuit layer 150 and the plurality of light emitting devices 120. The connecting structure 170 is located between the driving circuit layer 150 and the plurality of light emitting devices 120 and connects the driving circuit layer 150 and the plurality of light emitting devices 120. For example, the connecting structure 170 is connected to the first electrode 121 of the light emitting device 120. For example, the planarization layer can include a plurality of sub-planarization layers, which will not be described one by one here.

[0097] In some examples, as shown in FIG. 7, the non-conductive reflective structure 130 is located on the planarization layer 160, and the first electrode 121 is located on the non-conductive reflective structure 130. For example, the non-conductive reflective structure 130 is directly formed on the planarization layer 160, and the first electrode 121 is directly formed on the non-conductive reflective structure 130. Thus, the thickness of each film layer in the non-conductive reflective structure 130 can be guaranteed, and the reflective performance of the non-conductive reflective structure can be guaranteed.

[0098] In some examples, as shown in FIG. 7, in addition to the portion connected with the connecting structure 170, the first electrode 121 is entirely within the orthographic projection of the non-conductive reflective structure 130 on the substrate 110. Thus, the non-conductive reflective structure 130 can also reflect the light on the side of the first electrode 121 close to the substrate 110.

[0099] In some examples, as shown in FIG. 7, the surface of the non-conductive reflective structure 130 close to the substrate 110 is in the same plane. For example, the surface of the non-conductive reflective structure 130 away from the substrate 110 is in the same plane. Thus, the process of manufacturing the non-conductive reflective structure 130 can be made simpler.

[0100] In some examples, as shown in FIG. 7, the first electrode 121 of each light emitting device 120 includes a transparent sub-electrode 121a and a conductive reflective structure 121b on the side of the transparent sub-electrode 121a close to the substrate 110, and the material of the conductive reflective structure 121b includes metal and is configured to reflect the light emitted from the light emitting functional layer 122. However, the embodiments of the present disclosure do not limit the structure of the first electrode 121. For example, the first electrode 121 can also only include the transparent sub-electrode 121a, and the conductive reflective structure 121b can be omitted. Since the non-conductive reflective structure 130 is on the side of the first electrode 121 close to the display panel, and in addition to the portion connected with the connecting structure 170, the first electrode 121 is entirely within the orthographic projection of the non-conductive reflective structure 130 on the substrate 110, the non-conductive reflective structure 130 can reflect the light emitted from the light emitting functional layer 122, and reflect the light on the side of the first electrode 121 close to the substrate 110 to the light emitting side of the light emitting device 120, thereby achieving the function of the conductive reflective structure 121b.

[0101] In some examples, as shown in FIG. 7, in the direction perpendicular to the substrate 110, the distance between the non-conductive reflective structure 130 and the first electrode 121 of the light emitting device 120 is equal to zero. Thus, the light can be prevented from leaking out of the gap between the non-conductive reflective structure 130 and the first electrode 121, and the light between the adjacent light emitting devices 120 can be better reflected.

[0102] In some examples, as shown in FIG. 7, the plurality of light emitting devices 120 includes a first light emitting device 1201 configured to emit light of a first color and a second light emitting device 1202 configured to emit light of a second color, the first color and the second color being different colors. A spacing S01 between the first electrodes 121 of adjacent first light emitting device 1201 and second light emitting device 1202 is a first spacing S011. The non-conductive reflective structure 130 includes a plurality of reflective portions 131 including a first reflective portion 1311 and a second reflective portion 1312, the first reflective portion 1311 being closer to the first light emitting device 1201 than the second reflective portion 1312, the second reflective portion 1312 being closer to the second light emitting device 1202 than the first reflective portion 1311. The first reflective portion 1311 and the second reflective portion 1312 both overlap the first spacing S011 in the orthographic projection of the substrate 110. In the example shown in the figure, the plurality of non-metallic material layers of the first reflective portion 1311 includes a first non-metallic layer 1301 and a second non-metallic layer 1302, both having a thickness of one fourth of a peak wavelength of the light of the first color. In the example shown in the figure, the plurality of non-metallic material layers of the second reflective portion 1312 includes a first non-metallic layer 1301 and a second non-metallic layer 1302, both having a thickness of one fourth of a peak wavelength of the light of the second color. In this way, the first reflective portion 1311 and the second reflective portion 1312 can more effectively reflect light of the first spacing S011 between the first electrodes 121 of the first light emitting device 1201 and the second light emitting device 1202, more effectively improving the light emitting efficiency of the light emitting device 120.

[0103] In some examples, as shown in FIG. 7, the plurality of light emitting devices 120 further comprises a third light emitting device 1203 configured to emit light of a third color, the third color being different from both the first color and the second color. The spacing S01 between the first electrodes 121 of the adjacent second light emitting device 1202 and the third light emitting device 1203 is a third spacing S013. The plurality of reflective portions 131 of the non-conductive reflective structure 130 further comprises a third reflective portion 1313, the third reflective portion 1313 being closer to the third light emitting device 1203 than the first reflective portion 1311 and the second reflective portion 1312. The second reflective portion 1312 in the orthographic projection of the substrate 110 also overlaps the third spacing S013 in the orthographic projection of the substrate 110, and the third reflective portion 1313 in the orthographic projection of the substrate 110 also overlaps the third spacing S013 in the orthographic projection of the substrate 110. The plurality of non-metallic material layers of the third reflective portion 1313 is schematically shown as comprising a first non-metallic layer 1301 and a second non-metallic layer 1302, both having a thickness of a quarter of the peak wavelength of the light of the third color. In this way, the second reflective portion 1312 and the third reflective portion 1313 can more effectively reflect the light of the third spacing S013 between the first electrodes 121 of the second light emitting device 1202 and the third light emitting device 1203, and more effectively improve the light emitting efficiency of the light emitting device 120.

[0104] In some examples, as shown in FIG. 7, more than 70% of the area of the orthographic projection of the first electrode 121 of each light emitting device 120 is within the orthographic projection of the reflective portion 131 closest to the light emitting device 120. For example, except for the portion connected to the connecting structure 170, the orthographic projection of the first electrode 121 of each light emitting device 120 is within the orthographic projection of the reflective portion 131 closest to the light emitting device 120. That is, except for the portion connected to the connecting structure 170, the orthographic projection of the first electrode 121 of the first light emitting device 1201 is within the orthographic projection of the first reflective portion 1311 in the orthographic projection of the substrate 110. Except for the portion connected to the connecting structure 170, the orthographic projection of the first electrode 121 of the second light emitting device 1202 is within the orthographic projection of the second reflective portion 1312 in the orthographic projection of the substrate 110. Except for the portion connected to the connecting structure 170, the orthographic projection of the first electrode 121 of the third light emitting device 1203 is within the orthographic projection of the third reflective portion 1313 in the orthographic projection of the substrate 110.

[0105] In some examples, as shown in FIG. 7, the gap between two adjacent reflective portions 131 in the plurality of reflective portions 131 is equal to zero. Thus, the reflective portion 131 can have a larger reflective area, and can better cover the spacing S01 and reflect the light incident into the spacing S01.

[0106] In some examples, as shown in FIG. 7, the thicknesses of the plurality of reflective portions 131 are equal. Thus, the process of manufacturing the reflective portions 131 can be made simpler. The embodiments of the present disclosure do not limit the thicknesses of the plurality of reflective portions 131.

[0107] In some examples, as shown in FIG. 7, the surfaces of the plurality of reflective portions 131 close to the substrate 110 are all in the same plane. For example, the surfaces of the plurality of reflective portions 131 away from the substrate 110 are all in the same plane.

[0108] FIG. 8 is a structural schematic diagram of another display substrate provided by the embodiments of the present disclosure. As shown in FIG. 8, the thicknesses of different reflective portions 131 can be unequal. The diagram schematically shows that the thickness of the first reflective portion 1311 is unequal to the thicknesses of the second reflective portion 1312 and the third reflective portion 1313, and the thicknesses of the second reflective portion 1312 and the third reflective portion 1313 are equal. However, the embodiments of the present disclosure do not limit this. For example, the thickness of any one of the first reflective portion 1311, the second reflective portion, and the third reflective portion 1313 is unequal to the thicknesses of the other two reflective portions 131. For example, the thicknesses of the three reflective portions 131 in the first reflective portion 1311, the second reflective portion 1312, and the third reflective portion 1313 are all unequal.

[0109] In some examples, as shown in FIG. 8, the area of the first electrode 121 of the first light-emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the first electrode 121 of the second light-emitting device 1202 in the orthographic projection of the substrate 110, and the thickness of the first reflective portion 1311 is greater than the thickness of the second reflective portion 1312. The greater the thickness of the reflective portion 131, the better the reflection performance. By setting the reflective portions 131 with different thicknesses, the light-emitting efficiency between different light-emitting devices 120 can be better balanced, so that the display substrate 100 has better display effect and higher display life. For example, the thickness of the reflective portion can also be designed according to the light-emitting efficiency of each light-emitting device 120. For example, the light-emitting efficiency of the first light-emitting device 1201 is less than the light-emitting efficiency of the second light-emitting device 1202 and the third light-emitting device 1203, and the thickness of the first reflective portion 1311 is greater than the thicknesses of the second reflective portion 1312 and the third reflective portion 1313.

[0110] In some examples, as shown in FIG. 8, the area of the light-emitting functional layer 122 of the first light-emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the light-emitting functional layer 122 of the second light-emitting device 1202 in the orthographic projection of the substrate 110, and the thickness of the first reflective portion 1311 is greater than the thickness of the second reflective portion 1312.

[0111] FIG. 9A is a schematic view of another structure of a display substrate according to embodiments of the present disclosure. As shown in FIG. 9A, the non-conductive reflective structure 130 overlaps the first electrode 121 of the light emitting device 120 in the projection of the substrate 110. For example, the non-conductive reflective structure 130 is located on the side of the first electrode 121 close to the display substrate 100. Thus, the reflection can better reflect the light between adjacent light emitting devices 120.

[0112] In some examples, as shown in FIG. 9A, the plurality of light emitting devices 120 includes a first light emitting device 1201 and a second light emitting device 1202, and the interval S01 between the first electrodes 121 of the adjacent first light emitting device 1201 and the second light emitting device 1202 is a first interval S011. The non-conductive reflective structure 130 includes a plurality of reflective portions 131, and the plurality of reflective portions 131 includes a first reflective portion 1311 and a second reflective portion 1312, and the first reflective portion 1311 and the second reflective portion 1312 overlap the first interval S011 in the projection of the substrate 110. Thus, the first reflective portion 1311 and the second reflective portion 1312 can more effectively reflect the light of the first interval S011 between the first electrodes 121 of the first light emitting device 1201 and the second light emitting device 1202, and more effectively improve the light emitting efficiency of the light emitting device 120.

[0113] In some examples, as shown in FIG. 9A, the plurality of light emitting devices 120 further includes a third light emitting device 1203, and the interval S01 between the first electrodes 121 of the adjacent second light emitting device 1202 and the third light emitting device 1203 is a third interval S013. The plurality of reflective portions 131 of the non-conductive reflective structure 130 further includes a third reflective portion 1313, and the second reflective portion 1311 further overlaps the third interval S013 in the projection of the substrate 110, and the third reflective portion 1313 overlaps the third interval S013 in the projection of the substrate 110. Thus, the second reflective portion 1312 and the third reflective portion 1313 can more effectively reflect the light of the third interval S013 between the first electrodes 121 of the second light emitting device 1202 and the third light emitting device 1203, and more effectively improve the light emitting efficiency of the light emitting device 120.

[0114] In some examples, as shown in FIG. 9A, each reflective portion 131 overlaps the first electrode 121 of the light emitting device 120 closest to the reflective portion 131 in the projection of the substrate 110.

[0115] In some examples, as shown in FIG. 9A, each reflective portion 131 is spaced apart from the connection structure 170 by an interval S01.

[0116] For example, along a direction perpendicular to the substrate 110, FIG. 9A schematically shows that the spacing between each reflective portion 131 and the first electrode 121 of each light emitting device 120 is not zero. However, the spacing can also be equal to zero.

[0117] FIG. 9B is a schematic view of another structure of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 9B, the light emitting device 120 includes a first electrode 121, a light emitting functional layer 122, and a second electrode 123. The first electrode 121 includes a conductive reflective structure 121b and a transparent sub-electrode 121a located on a side of the conductive reflective structure 121b away from the substrate 110. The space between the surface of the conductive reflective structure 121b away from the substrate 110 and the surface of the second electrode 123 close to the substrate 110 is an optical microcavity of the light emitting device 120, and the distance between the surface of the conductive reflective structure 121b away from the substrate 110 and the surface of the second electrode 123 close to the substrate 110 is the cavity length of the light emitting device 120.

[0118] The plurality of light emitting devices 120 includes a first light emitting device 1201 and a second light emitting device 1202, the first light emitting device 1201 is configured to emit light of a first color, and the second light emitting device 1202 is configured to emit light of a second color, the wavelength of the light of the second color is greater than the wavelength of the light of the first color, and the cavity length of the second light emitting device 1202 is greater than the cavity length of the first light emitting device 1201. In this way, the light emitted by light emitting devices of different colors can form interference peaks in the optical microcavity, thereby enhancing the light emitting brightness and light emitting efficiency of each light emitting device.

[0119] The surface of the non-conductive reflective structure 130 away from the substrate 110 is flush with the surface of the first electrode 121 of the light emitting device 120 away from the substrate 110, i.e., the surface of the non-conductive reflective structure 130 away from the substrate 110 is flush with the surface of the transparent sub-electrode 121a of the light emitting device 120 away from the substrate 110. The non-conductive reflective structure 130 includes a plurality of reflective portions 131, and the plurality of reflective portions 131 includes a first reflective portion 1311 and a second reflective portion 1312.

[0120] The distance between the surface of the first electrode 121 of the light emitting device 120 away from the substrate substrate 110 and the substrate substrate 110 is the top height of the first electrode 121, the distance between the surface of the reflection part 131 away from the substrate substrate 110 and the substrate substrate 110 is the top height of the reflection part 131, the top height of the first electrode 121 of the second light emitting device 1202 is greater than the top height of the first electrode 121 of the first light emitting device 1201, and the top height of the second reflection part 1312 is greater than the top height of the first reflection part 1311. As shown in FIG. 9B, the difference between the top heights of the first electrodes 121 of the second light emitting device 1202 and the first light emitting device 1201 can be transitioned in turn through the second reflection part 1312 and the first reflection part 1311, so that by making the top height of the second reflection part 1312 greater than the top height of the first reflection part 1311, the difference between the top heights of the first electrodes 121 of the second light emitting device 1202 and the first light emitting device 1201 can also be alleviated.

[0121] In some examples, as shown in FIG. 9B, the surface of the reflection part 131 close to the substrate substrate 110 is flush with the surface of the first electrode 121 close to the substrate substrate 110, and the thickness of the second reflection part 1312 is greater than the thickness of the first reflection part 1311.

[0122] In some examples, as shown in FIG. 9B, the plurality of light emitting devices 120 includes a third light emitting device 1203 configured to emit light of a third color, the wavelength of the light of the third color is greater than the wavelength of the light of the second color, and the cavity length of the third light emitting device 1202 is greater than the cavity length of the second light emitting device 1201. Thus, the light emitted by light emitting devices of different colors can form interference peaks in the optical microcavity, thereby enhancing the light emitting brightness and light emitting efficiency of each light emitting device.

[0123] The plurality of reflection parts 131 further includes a third reflection part 1313. The top height of the first electrode 121 of the third light emitting device 1203 is greater than the top height of the first electrode 121 of the second light emitting device 1202, and the top height of the third reflection part 1313 is greater than the top height of the second reflection part 1312. Thus, by making the top height of the third reflection part 1313 greater than the top height of the second reflection part 1312, the difference between the top heights of the first electrodes 121 of the third light emitting device 1203 and the second light emitting device 1202 can also be alleviated.

[0124] In some examples, as shown in FIG. 9B, the thickness of the third reflection part 1313 is greater than the thickness of the second reflection part 1312.

[0125] In some examples, as shown in FIG. 9B, the light emitting device 120 further includes an optical adjustment layer 121c between the transparent sub-electrode 121a and the conductive reflective structure 121b. The optical adjustment layer 121c can be used to adjust the cavity length of the light emitting device 120 so that the light emitted by the light emitting device 120 can better produce an interference peak within the microcavity. For example, the second light emitting device 1202 and the third light emitting device 1203 can each include an optical adjustment layer 121c.

[0126] For example, the thicknesses of the transparent sub-electrode 121a and the conductive reflective structure 121b of each light emitting device are equal, and the cavity length of the light emitting device is adjusted only by adjusting the height of the optical adjustment layer 121c. Of course, embodiments of the present disclosure are not limited in this regard. For example, the thicknesses of the transparent sub-electrode and the conductive reflective structure of each light emitting device can also adjust the cavity length of the light emitting device.

[0127] FIG. 10 is a top view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 10, the plurality of light emitting devices 120 includes a first light emitting device 1201 and a second light emitting device 1202, and the plurality of reflective portions 131 includes a first reflective portion 1311 and a second reflective portion 1312. The interval S01 between the first electrodes 121 of the adjacent first light emitting device 1201 and the second light emitting device 1202 is a first interval S011. The orthographic projection of the first reflective portion 1311 and the orthographic projection of the second reflective portion 1312 on the substrate 110 each overlap the orthographic projection of the first interval S011 on the substrate 110.

[0128] In some examples, as shown in FIG. 10, the plurality of light emitting devices 120 further includes a third light emitting device 1203, and the plurality of reflective portions 131 further includes a third reflective portion 1313. The interval S01 between the first electrodes 121 of the adjacent first light emitting device 1201 and the third light emitting device 1203 is a second interval S012, and the interval S01 between the first electrodes 121 of the adjacent second light emitting device 1202 and the third light emitting device 1203 is a third interval S013. The orthographic projection of the first reflective portion 1311 on the substrate 110 also overlaps the orthographic projection of the second interval S012 on the substrate 110, the orthographic projection of the second reflective portion 1312 on the substrate 110 also overlaps the orthographic projection of the third interval S013 on the substrate 110, and the orthographic projection of the third reflective portion 1313 on the substrate 110 overlaps the orthographic projection of the second interval S012 and the orthographic projection of the third interval S013 on the substrate 110.

[0129] For example, FIG. 10 can be a top view of the display substrate 100 shown in FIG. 5 or FIG. 6. For example, the orthographic projection of each reflective portion 131 on the substrate 110 includes an outer edge 1310 and an inner edge, and the inner edge of each reflective portion 131 substantially coincides with the edge 1210 of the orthographic projection of the first electrode 121 of each light emitting device 120 on the substrate 110.

[0130] For example, FIG. 10 can be a top view schematic of the display substrate 100 shown in FIG. 7, FIG. 8, FIG. 9A or FIG. 9B. For example, the outer edge 1310 and the inner edge of the projection of each reflective portion 131 on the substrate 110 are included in the projection of each reflective portion 131 on the substrate 110. The inner edge of each reflective portion 131 on the substrate 110 is located within the projection of the first electrode 121 of each light emitting device 120 on the substrate 110.

[0131] In some examples, as shown in FIG. 10, the projections of two adjacent reflective portions 131 on the substrate 110 include at least partially overlapping edges. Thus, the two adjacent reflective portions 131 can better collectively cover the interval S01 to better reflect light within the interval S01.

[0132] In some examples, as shown in FIG. 10, the area of the projection of the first electrode 121 of the first light emitting device 1201 on the substrate 110 is greater than the area of the projection of the first electrode 121 of the second light emitting device 1202 on the substrate 110. The at least partially overlapping edges of the first reflective portion 1311 and the second reflective portion 1312 on the substrate 110 are the first edge 1310a, the minimum distance between the first edge 1310a and the projection of the first electrode 121 of the first light emitting device 1201 on the substrate 110 is the first distance D1, the minimum distance between the first edge 1310a and the projection of the first electrode 121 of the second light emitting device 1202 on the substrate 110 is the second distance D2, and the first distance D1 is greater than the second distance D2. In this example, by making the first distance D1 greater than the second distance D2, the area of the first reflective portion 1311 within the first interval S011 can be greater than the area of the second reflective portion 1312, and the greater the area of the first reflective portion 1311, the higher the light emitting efficiency of the first light emitting device 1201. When the area of the projection of the first electrode 121 of the first light emitting device 1201 on the substrate 110 is greater than the area of the projection of the first electrode 121 of the second light emitting device 1202 on the substrate 110, by making the area of the first reflective portion 1311 greater than the area of the second reflective portion 1312, the light emitting efficiency between different light emitting devices 120 can be better balanced, so that the display substrate 100 has better display effect and longer display life.

[0133] For example, when the area of the projection of the light emitting functional layer of the first light emitting device on the substrate is greater than the area of the projection of the light emitting functional layer of the second light emitting device on the substrate, the first distance is greater than the second distance. For example, when the light emitting efficiency of the first light emitting device is less than the light emitting efficiency of the second light emitting device and the third light emitting device, the first distance is greater than the second distance.

[0134] In some examples, as shown in FIG. 10, the area of the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110. The edge of the first reflective portion 1311 and the third reflective portion 1313 that at least partially coincide in the orthographic projection of the substrate 110 is a second edge 1310b, the minimum distance between the second edge 1310b and the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is a third distance D3, and the minimum distance between the second edge 1310b and the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110 is a fourth distance D4, the third distance D3 being greater than the fourth distance D4.

[0135] In some examples, as shown in FIG. 10, the area of the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110. The edge of the first reflective portion 1311 and the third reflective portion 1313 that at least partially coincide in the orthographic projection of the substrate 110 is a second edge 1310b, the minimum distance between the second edge 1310b and the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is a third distance D3, and the minimum distance between the second edge 1310b and the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110 is a fourth distance D4, the third distance D3 being greater than the fourth distance D4.

[0136] In some examples, as shown in FIG. 10, the area of the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is greater than the area of the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110. The edge of the first reflective portion 1311 and the third reflective portion 1313 that at least partially coincide in the orthographic projection of the substrate 110 is a second edge 1310b, the minimum distance between the second edge 1310b and the first electrode 121 of the first light emitting device 1201 in the orthographic projection of the substrate 110 is a third distance D3, and the minimum distance between the second edge 1310b and the first electrode 121 of the third light emitting device 1203 in the orthographic projection of the substrate 110 is a fourth distance D4, the third distance D3 being greater than the fourth distance D4.

[0137] For example, when the area of the light emitting functional layer of the first light emitting device in the orthographic projection of the substrate is greater than the area of the light emitting functional layer of the second light emitting device in the orthographic projection of the substrate, the area of the first reflective portion in the orthographic projection of the substrate is greater than the area of the second reflective portion in the orthographic projection of the substrate. For example, when the light emitting efficiency of the first light emitting device is less than the light emitting efficiency of the second light emitting device and the third light emitting device, the area of the first reflective portion in the orthographic projection of the substrate is greater than the area of the second reflective portion in the orthographic projection of the substrate.

[0138] In some examples, as shown in FIG. 10, the outer edge 1310 of the projection of each reflective portion 131 on the substrate 110 has substantially the same shape as the outer edge 1210 of the projection of the first electrode 121 of the light emitting device 120 closest to the reflective portion 131 on the substrate 110.

[0139] For example, as shown in FIG. 10, the outer edge 1210 of the projection of the first electrode 121 of each light emitting device 120 on the substrate 110 is rectangular, and the outer edge 1310 of the projection of each reflective portion 131 on the substrate 110 is also rectangular. Thus, the light reflected by the reflective portion 131 from the light emitting functional layer 122 can be more uniformly reflected, which can improve the light emitting efficiency and make the distribution of the reflected light more uniform.

[0140] For example, the outer edge of the projection of each reflective portion on the substrate has substantially the same shape as the outer edge of the projection of the light emitting functional layer of the light emitting device closest to the reflective portion on the substrate.

[0141] In some examples, as shown in FIG. 10, the projection of each reflective portion 131 on the substrate 110 has a ring shape.

[0142] FIG. 11 is another top view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 11, two adjacent reflective portions 131 of the plurality of reflective portions 131 have at least partially overlapping edges 13100. Thus, the two adjacent reflective portions 131 can better cover the interval S01 to better reflect the light in the interval S01.

[0143] In some examples, as shown in FIG. 11, the outer edge 1310 of the projection of each reflective portion 131 on the substrate 110 has substantially the same shape. Thus, each reflective portion 131 can be arranged in each interval S01 to better reflect the light entering the interval S01. For example, the outer edge 1310 of the projection of each reflective portion 131 on the substrate 110 is substantially pentagonal. Of course, the present disclosure is not limited in this regard, and the shape and distance of the pixel opening can be matched and designed according to the shape and distance of the pixel opening.

[0144] FIG. 12 is another top view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 12, the gap between two adjacent reflective portions 131 of the plurality of reflective portions 131 is equal to zero.

[0145] In some examples, as shown in FIG. 12, each reflection portion 131 has substantially the same shape as an outer edge 1310 of the orthographic projection of the substrate 110 and an outer edge 1210 of the orthographic projection of the first electrode 121 of the light emitting device 120 closest to the reflection portion 131. Thus, light reflected from the light emitting functional layer 122 in all directions can be reflected by the reflection portion 131, which not only improves the light emitting efficiency, but also makes the distribution of the reflected light more uniform.

[0146] The display device provided by the embodiments of the present disclosure is also provided. FIG. 13 is a schematic diagram of a display device provided by the embodiments of the present disclosure. As shown in FIG. 13, the display device 200 includes any of the display substrate 100 described above. Thus, the display device 200 has the beneficial effects corresponding to the beneficial effects of the display substrate 100, which will not be described herein again.

[0147] For example, the display device 200 can be any product or component with a display function, such as a television, a notebook computer, a tablet computer, a mobile phone, a navigation device, a wearable device, a virtual reality device, etc.

[0148] The manufacturing method of the display substrate provided by the embodiments of the present disclosure is also provided. FIG. 14 is a flowchart of a manufacturing method of a display substrate provided by the embodiments of the present disclosure. As shown in FIG. 14, the display substrate includes a substrate and a plurality of light emitting devices on the substrate, each of the light emitting devices includes a first electrode, and the first electrodes of two adjacent light emitting devices of the plurality of light emitting devices have a spacing. The plurality of light emitting devices includes a first light emitting device and a second light emitting device, the first light emitting device is configured to emit light of a first color, the second light emitting device is configured to emit light of a second color, the first color and the second color are different colors, and the spacing between the first electrodes of the adjacent first light emitting device and the second light emitting device is a first spacing. The manufacturing method includes:

[0149] S01: forming the first electrodes of the plurality of light emitting devices;

[0150] S02: alternately depositing a plurality of non-conductive materials with different refractive indexes on a side of the first electrodes away from the substrate to form a first material layer including a plurality of non-conductive material layers. The thickness of each of the plurality of non-conductive material layers of the first material layer is one fourth of the peak wavelength of the light of the first color, and the first material layer includes a first sub-portion on the side of the first electrodes away from the substrate and a second sub-portion in the first spacing;

[0151] S03: removing the first sub-portion and retaining the second sub-portion;

[0152] S04: performing a patterning process on the second sub-portion to form a first reflection portion in the first spacing;

[0153] S05: depositing a plurality of non-conductive materials with different refractive indexes alternately on a side of the first electrode away from the substrate to form a second material layer comprising a plurality of non-conductive material layers, wherein a thickness of each of the plurality of non-conductive material layers of the second material layer is a quarter of a peak wavelength of light of a second color, the second material layer comprises a third sub-portion located on the side of the first electrode and the first reflective portion away from the substrate and a second reflective portion located in the first interval, the first reflective portion is closer to the first light emitting device than the second reflective portion, and the second reflective portion is closer to the second light emitting device than the first reflective portion; and

[0154] S06: removing the third sub-portion and retaining the second reflective portion.

[0155] The display substrate described above can be obtained by using the manufacturing method described above, and thus has the beneficial technical effects corresponding to the beneficial technical effects of the display substrate described above, which will not be described herein again.

[0156] FIGS. 15-25 are structural schematic diagrams of each step of another manufacturing method of a display substrate provided by an embodiment of the present disclosure.

[0157] As shown in FIG. 15, a driving circuit layer 150, a planarization layer 160, a connection structure 170, and a plurality of first electrodes 121 of light emitting devices 120 are sequentially formed on a substrate 110, and an interval S01 is provided between two adjacent first electrodes 121. The plurality of light emitting devices 120 comprises a first light emitting device 1201, a second light emitting device 1202, and a third light emitting device 1203. The interval S01 between the first electrode 121 of the first light emitting device 1201 and the first electrode 121 of the second light emitting device 1202 is a first interval S011. The interval S01 between the first electrode 121 of the first light emitting device 1201 and the first electrode 121 of the third light emitting device 1203 is a second interval S012. The interval S01 between the first electrode 121 of the second light emitting device 1202 and the first electrode 121 of the third light emitting device 1203 is a third interval S013. The first light emitting device is configured to emit light of a first color, the second light emitting device is configured to emit light of a second color, and the third light emitting device is configured to emit light of a third color, and the first color, the second color, and the third color are all different.

[0158] The forming process of the first electrode in the embodiment of the present disclosure is not limited. For example, a physical vapor deposition process can be used for film plating, and a glue coating, exposure, and development process can be used to obtain the first electrode of the plurality of light emitting devices.

[0159] For example, as shown in FIG. 15, the first electrode 121 comprises a transparent sub-electrode 121a and a conductive reflective structure 121b located on a side of the transparent sub-electrode 121a close to the substrate 110.

[0160] As shown in FIG. 16, a plurality of non-conductive materials with different refractive indexes, e.g., the plurality of non-conductive materials include a first non-metallic material and a second non-metallic material, are alternately deposited on a side of the first electrode 121 away from the substrate 110 to form a first material layer M01 including a plurality of non-conductive material layers. The plurality of non-conductive material layers of the first material layer M01, e.g., the plurality of non-conductive material layers include a first non-metallic layer and a second non-metallic layer, each has a thickness of one fourth of a peak wavelength of light of a first color. As shown in FIGS. 15 and 16, the first material layer M01 includes a first sub-portion M011 located on the side of the first electrode 121 away from the substrate 110 and a second sub-portion M012 located within the interval S01.

[0161] As shown in FIG. 17, the first sub-portion M011 is removed and the second sub-portion M012 is retained. For example, a chemical mechanical planarization process can be employed to remove the first sub-portion M011 and retain the second sub-portion M012, a surface of the second sub-portion M012 away from the substrate is flush with a surface of the first electrode 121 away from the substrate.

[0162] As shown in FIG. 18, a mask layer F01 is formed on a side of the first electrode 121 and the second sub-portion M012 away from the substrate 110. The mask layer F01 has a mask opening F011 exposing a portion of the second sub-portion M012 within the first interval S011, exposing a portion of the second sub-portion M012 within the second interval S012, and exposing all of the second sub-portion M012 within the third interval S013.

[0163] As shown in FIG. 19, a patterning process is performed on the second sub-portion M012 to form a first reflective portion 1311 located within the first interval S011 and a first reflective portion 1311 located within the third interval S013.

[0164] As shown in FIG. 20, a plurality of non-conductive materials with different refractive indexes, e.g., the plurality of non-conductive materials include a first non-metallic material and a second non-metallic material, are alternately deposited on a side of the first electrode 121 away from the substrate 110 to form a second material layer M02. The plurality of non-conductive material layers of the second material layer M02, e.g., the plurality of non-conductive material layers include a first non-metallic layer and a second non-metallic layer, each has a thickness of one fourth of a peak wavelength of light of a second color. The second material layer M02 includes a third sub-portion M021 located on the side of the first electrode 121 away from the substrate, a second reflective portion 1312 located within the first interval S011, and a fourth sub-portion M022 located within the second interval S012 and the third interval S013.

[0165] As shown in FIG. 21, the third sub-portion M021 is removed and the first reflective portion 1311, the second reflective portion 1312, and the fourth sub-portion M022 are retained.

[0166] As shown in FIG. 22, a mask layer F02 is formed on the side of the first electrode 121 away from the substrate 110, covering the first reflective portion 1311 and the second reflective portion 1312 in the first interval S011, and covering the first reflective portion 1311 in the second interval S012. The mask layer F02 has a mask opening F021 exposing part of the fourth sub-portion M022 in the third interval S013 and exposing all of the fourth sub-portion M022 in the second interval S012.

[0167] As shown in FIG. 23, the fourth sub-portion M022 is subjected to a patterning process to form the second reflective portion 1312 in the third interval S013.

[0168] As shown in FIG. 24, a plurality of non-conductive materials with different refractive indexes, for example, a first non-metallic material and a second non-metallic material, are alternately deposited on the side of the first electrode 121 away from the substrate 110 to form a third material layer M03. The plurality of non-conductive material layers, for example, a first non-metallic layer and a second non-metallic layer, of the third material layer M03 each has a thickness of one fourth of the peak wavelength of light of a third color. The third material layer M03 includes a fifth sub-portion M031 on the side of the first electrode 121 away from the substrate 110 and a third reflective portion 1313 in the second interval S012 and the third interval S013.

[0169] As shown in FIG. 25, the fifth sub-portion M031 is removed, and the first reflective portion 1311, the second reflective portion 1312 and the third reflective portion 1313 are retained.

[0170] The following points need to be explained:

[0171] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.

[0172] (2) The features in the same and different embodiments of the present disclosure can be combined with each other without conflict.

[0173] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A display substrate, comprising a substrate and a plurality of light emitting devices on the substrate, wherein the display substrate further comprising a reflective structure, the reflective structure comprising a conductive reflective structure and a non-conductive reflective structure, the conductive reflective structure overlapping a light emitting region of each of the light emitting devices in a projection of the substrate, the non-conductive reflective structure overlapping a non-light emitting region between two adjacent light emitting devices in the projection of the substrate. 2.The display substrate of claim 1, wherein, each of the light emitting devices comprising a first electrode and a light emitting functional layer on a side of the first electrode distal to the substrate, a gap being present between the first electrodes of two adjacent light emitting devices of the plurality of light emitting devices, the non-conductive reflective structure overlapping the gap in the projection of the substrate, the non-conductive reflective structure comprising a plurality of non-conductive material layers with different refractive indexes alternately stacked in a direction perpendicular to the substrate. 3.The display substrate of claim 2, wherein, the non-conductive reflective structure covering the gap in the projection of the substrate. 4.The display substrate of claim 2, wherein, a surface of the non-conductive reflective structure distal to the substrate is flush with a surface of the first electrode of the light emitting device distal to the substrate. 5.The display substrate of claim 4, wherein, a surface of the non-conductive reflective structure proximal to the substrate is flush with a surface of the first electrode of the light emitting device proximal to the substrate. 6.The display substrate of claim 2, wherein, the non-conductive reflective structure overlapping the first electrode of the light emitting device in the projection of the substrate. 7.The display substrate of claim 6, wherein, an overlapping area of the non-conductive reflective structure and the first electrode of the light emitting device in the projection of the substrate is not less than 70% of an area of the first electrode of the light emitting device in the projection of the substrate. 8.The display substrate of claim 6, wherein, a distance between the non-conductive reflective structure and the first electrode of the light emitting device in the direction perpendicular to the substrate is equal to zero. 9.The display substrate of any one of claims 2-7, wherein, the plurality of light emitting devices comprising a first light emitting device and a second light emitting device, the first light emitting device being configured to emit light of a first color, the second light emitting device being configured to emit light of a second color, the first color and the second color being different colors, the gap between the first electrodes of adjacent first light emitting devices and second light emitting devices being a first gap, the non-conductive reflective structure comprising a plurality of reflective portions, the plurality of reflective portions comprising a first reflective portion and a second reflective portion, the first reflective portion being closer to the first light emitting device than the second reflective portion, the second reflective portion being closer to the second light emitting device than the first reflective portion, the first reflective portion and the second reflective portion both overlapping the first gap in the projection of the substrate, a thickness of each of the plurality of non-conductive material layers of the first reflective portion being a quarter of a peak wavelength of the light of the first color, a thickness of each of the plurality of non-conductive material layers of the second reflective portion being a quarter of a peak wavelength of the light of the second color. 10.The display substrate of claim 9, wherein, the plurality of light emitting devices further comprises a third light emitting device configured to emit light of a third color different from both the first color and the second color, the spacing between the first electrodes of adjacent first and third light emitting devices is a second spacing, the spacing between the first electrodes of adjacent second and third light emitting devices is a third spacing, the plurality of reflective portions of the non-conductive reflective structure further comprises a third reflective portion closer to the third light emitting device than the first and second reflective portions, the first reflective portion in the orthographic projection of the substrate further overlaps the second spacing in the orthographic projection of the substrate, the second reflective portion in the orthographic projection of the substrate further overlaps the third spacing in the orthographic projection of the substrate, and the third reflective portion in the orthographic projection of the substrate overlaps both the second and third spacings in the orthographic projection of the substrate, the plurality of non-conductive material layers of the third reflective portion each has a thickness of one quarter of a peak wavelength of the light of the third color. 11.The display substrate according to claim 9 or 10, wherein a gap between two adjacent reflective portions of the plurality of reflective portions is equal to zero. 12.The display substrate of any one of claims 9-11, wherein, two adjacent reflective portions of the plurality of reflective portions in the orthographic projection of the substrate comprise edges that at least partially overlap. 13.The display substrate of claim 12, wherein, an area of the first electrode of the first light emitting device in the orthographic projection of the substrate is greater than an area of the first electrode of the second light emitting device in the orthographic projection of the substrate, the at least partially overlapping edges of the first and second reflective portions in the orthographic projection of the substrate is a first edge, a minimum distance of the first edge from the first electrode of the first light emitting device in the orthographic projection of the substrate is a first distance, a minimum distance of the first edge from the first electrode of the second light emitting device in the orthographic projection of the substrate is a second distance, and the first distance is greater than the second distance. 14.The display substrate of any one of claims 9-13, wherein, the plurality of reflective portions have equal thicknesses. 15.The display substrate of any one of claims 9-13, wherein, an area of the first electrode of the first light emitting device in the orthographic projection of the substrate is greater than an area of the first electrode of the second light emitting device in the orthographic projection of the substrate, an area of the first reflective portion in the orthographic projection of the substrate is greater than an area of the second reflective portion in the orthographic projection of the substrate, and / or a thickness of the first reflective portion is greater than a thickness of the second reflective portion.

16. The display substrate according to any one of claims 9-15, wherein, the plurality of reflective portions in the orthographic projection of the substrate have substantially identical shapes of outer edges.

17. The display substrate according to any one of claims 9-16, wherein, an outer edge of each of the reflective portions in the orthographic projection of the substrate has substantially the same shape as an outer edge of the first electrode of the light emitting device closest to the reflective portion in the orthographic projection of the substrate.

18. The display substrate according to any one of claims 9-17, wherein, each of the reflective portions in the orthographic projection of the substrate has a shape comprising a ring.

19. The display substrate according to any one of claims 1-18, wherein, the first electrode of each of the light emitting devices comprises the conductive reflective structure and a transparent sub-electrode on a side of the conductive reflective structure distal to the substrate.

20. The display substrate of any of claims 1-19, further comprising: a driving circuit layer located on a side of the plurality of light emitting devices close to the substrate and configured to drive the plurality of light emitting devices to emit light; a planarization layer located between the driving circuit layer and the plurality of light emitting devices; and a connection structure located between the driving circuit layer and the plurality of light emitting devices and connecting the driving circuit layer and the plurality of light emitting devices, wherein the non-conductive reflective structure is located on the planarization layer. The light emitting device further comprises a second electrode located on a side of the light emitting functional layer away from the substrate, and the light emitting functional layer of the light emitting device is an organic electroluminescent functional layer.

21. The display substrate according to any one of claims 2-20, wherein, The first electrode of the light emitting device comprises the conductive reflective structure and a transparent sub-electrode located on a side of the conductive reflective structure away from the substrate, and a distance between a surface of the conductive reflective structure away from the substrate and a surface of the second electrode close to the substrate is a cavity length of the light emitting device.

22. The display substrate of claim 21, wherein, The plurality of light emitting devices comprises a first light emitting device and a second light emitting device, the first light emitting device is configured to emit light of a first color, and the second light emitting device is configured to emit light of a second color, the wavelength of the light of the second color is greater than the wavelength of the light of the first color, and the cavity length of the second light emitting device is greater than the cavity length of the first light emitting device. A surface of the non-conductive reflective structure away from the substrate is flush with a surface of the first electrode of the light emitting device away from the substrate, the non-conductive reflective structure comprises a plurality of reflective portions, the plurality of reflective portions comprises a first reflective portion and a second reflective portion, the first reflective portion is closer to the first light emitting device than the second reflective portion, the second reflective portion is closer to the second light emitting device than the first reflective portion, a distance between the first electrodes of adjacent first light emitting devices and second light emitting devices is a first distance, and a projection of the first reflective portion and the second reflective portion on the substrate and a projection of the first distance on the substrate both overlap. A distance between a surface of the first electrode of the light emitting device away from the substrate and the substrate is a top height of the first electrode, a distance between a surface of the reflective portion away from the substrate and the substrate is a top height of the reflective portion, the top height of the first electrode of the second light emitting device is greater than the top height of the first electrode of the first light emitting device, and the top height of the second reflective portion is greater than the top height of the first reflective portion. A surface of the reflective portion close to the substrate is flush with a surface of the first electrode close to the substrate, and a thickness of the second reflective portion is greater than a thickness of the first reflective portion.

23. The display substrate of claim 22, wherein, The light emitting device further comprises an optical adjustment layer located between the transparent sub-electrode and the conductive reflective structure.

24. The display substrate of claim 23, wherein, The isolation structure is located between the light emitting functional layers of adjacent two light emitting devices of the plurality of light emitting devices, and the non-conductive reflective structure is located on a side of the isolation structure close to the substrate. 25.The display substrate of any one of claims 2-24, further comprising an isolation structure, wherein, ​ 26.A display device, comprising the display substrate according to any one of claims 1-25.

27. A method for manufacturing a display substrate, wherein The display substrate comprises a substrate and a plurality of light emitting devices on the substrate, each of the light emitting devices comprises a first electrode, there is a gap between the first electrodes of two adjacent light emitting devices of the plurality of light emitting devices, the plurality of light emitting devices comprises a first light emitting device and a second light emitting device, the first light emitting device is configured to emit light of a first color, the second light emitting device is configured to emit light of a second color, the first color and the second color are different colors, the gap between the first electrodes of the adjacent first light emitting device and the second light emitting device is a first gap, wherein the manufacturing method comprises: forming the first electrodes of the plurality of light emitting devices; alternately depositing a plurality of non-conductive materials with different refractive indexes on a side of the first electrodes away from the substrate to form a first material layer comprising a plurality of non-conductive material layers, wherein the thickness of each of the plurality of non-conductive material layers of the first material layer is a quarter of a peak wavelength of the light of the first color, the first material layer comprises a first sub-portion on the side of the first electrodes away from the substrate and a second sub-portion in the first gap; removing the first sub-portion and retaining the second sub-portion; performing a patterning process on the second sub-portion to form the first reflective portion in the first gap; alternately depositing a plurality of non-conductive materials with different refractive indexes on a side of the first electrodes away from the substrate to form a second material layer comprising a plurality of non-conductive material layers, wherein the thickness of each of the plurality of non-conductive material layers of the second material layer is a quarter of a peak wavelength of the light of the second color, the second material layer comprises a third sub-portion on the side of the first electrodes and the first reflective portion away from the substrate and the second reflective portion in the first gap, the first reflective portion is closer to the first light emitting device than the second reflective portion, the second reflective portion is closer to the second light emitting device than the first reflective portion; and removing the third sub-portion and retaining the second reflective portion.

Images