Display substrate and display apparatus

Abstract

At least one embodiment of the present disclosure provides a display substrate and a display apparatus. The display substrate comprises: pixel units arranged in an array on a base substrate; and a first conductive layer, a first planarization layer and a first electrode layer that are sequentially stacked on the base substrate, wherein each pixel unit comprises a plurality of sub-pixels, and corresponding to each of at least some sub-pixels in each pixel unit, the first conductive layer comprises a first conductive portion and a spacer portion, and the first electrode layer comprises a first hollowed-out portion and a first electrode portion, the orthographic projection of the first hollowed-out portion on the base substrate at least partially overlapping the orthographic projection of the spacer portion on the base substrate. In the display substrate, the orthographic projection of a first hollowed-out portion on a base substrate at least partially overlaps the orthographic projection of a spacer portion on the base substrate, so that the venting area of vent holes can be increased, thereby reducing the probability of occurrence of dark spots caused by a short circuit between a cathode and an anode, that is, bad phenomena such as dark spots are effectively ameliorated without adding mask process steps.

Description

Display substrate and display device

[0001] This application claims priority to Chinese Patent Application No. 2024106921210, filed on May 30, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0002] Embodiments of this disclosure relate to a display substrate and a display device. Background Technology

[0003] Organic light-emitting diode (OLED) display technology has been increasingly used in various electronic products such as smartphones, navigators, digital cameras, and televisions due to its advantages such as thinness, self-illumination, wide viewing angle, fast response speed, high brightness, and low power consumption, and has become the main development direction in the display field.

[0004] Typically, an organic light-emitting diode (OLED) display device includes a substrate, a pixel driving circuit, and an organic light-emitting structure. The organic light-emitting structure may include an anode, a light-emitting functional layer, and a cathode. The pixel driving circuit is located on the substrate, with the anode located on the side of the pixel driving circuit furthest from the substrate and electrically connected to the corresponding pixel driving circuit. The light-emitting functional layer is located on the side of the anode furthest from the pixel driving circuit, and the cathode is located on the side of the light-emitting functional layer furthest from the anode. The pixel driving circuit provides driving current to the organic light-emitting diode, thereby enabling light emission and display. Summary of the Invention

[0005] At least one embodiment of this disclosure provides a display substrate and a display device. The display substrate includes a first conductive layer, a first planarization layer, and a first electrode layer sequentially stacked on a substrate. Each pixel unit includes a plurality of sub-pixels, corresponding to at least some of the sub-pixels in each pixel unit. The first conductive layer includes a first conductive portion and a spacer portion. The first electrode layer includes a first cutout portion and a first electrode portion. The orthographic projection of the first cutout portion on the substrate and the orthographic projection of the spacer portion on the substrate at least partially overlap. By setting the orthographic projection of the first cutout portion on the substrate to at least partially overlap with the orthographic projection of the spacer portion on the substrate, the embodiments of this disclosure can increase the area of ​​the vent hole for venting, thereby reducing the probability of dark spots caused by short circuit between the cathode and anode. That is, without increasing the masking process steps, the dark spot defect phenomenon can be effectively improved.

[0006] At least one embodiment of this disclosure provides a display substrate, the display substrate comprising: a substrate; pixel units arranged in an array on the substrate; a first conductive layer, a first planarization layer and a first electrode layer sequentially stacked on the substrate, wherein each pixel unit includes a plurality of sub-pixels corresponding to at least a portion of each of the sub-pixels in each pixel unit, the first conductive layer includes a first conductive portion and a spacer portion, the first electrode layer includes a first cutout portion and a first electrode portion, and the orthographic projection of the first cutout portion on the substrate and the orthographic projection of the spacer portion on the substrate at least partially overlap.

[0007] For example, in a display substrate provided in at least one embodiment of this disclosure, at least corresponding to the sub-pixel with the largest light-emitting area in each pixel unit, the orthographic projection of the first cutout portion on the substrate and the orthographic projection of the spacer portion on the substrate at least partially overlap.

[0008] For example, in a display substrate provided in at least one embodiment of this disclosure, each pixel unit includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein the first color sub-pixel is the sub-pixel with the largest light-emitting area in the pixel unit.

[0009] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projection of the first cutout portion on the substrate is smaller than the orthographic projection of the spacer portion on the substrate, and is located within the orthographic projection of the spacer portion on the substrate.

[0010] For example, in the display substrate provided in at least one embodiment of this disclosure, the planar shape of the first cutout portion includes at least one of a square, a rectangle, and a rectangle with rounded corners.

[0011] For example, in a display substrate provided in at least one embodiment of this disclosure, the first conductive layer includes a data line, and the first cutout portion disposed in the first electrode portion corresponding to the first color sub-pixel is symmetrically disposed with respect to the data line.

[0012] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projection of the first color sub-pixel on the substrate and the orthographic projection of two data lines spaced apart from each other on the substrate overlap, and the first electrode portion corresponding to the first color sub-pixel is provided with eight first cutout portions in a square planar shape, and two first cutout portions are provided on both sides of each data line.

[0013] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projection of the first color sub-pixel on the substrate and the orthographic projection of two data lines spaced apart from each other on the substrate overlap, and the first electrode portion corresponding to the first color sub-pixel is provided with four first hollow portions with a planar shape of rectangle, and each data line is provided with a first hollow portion on both sides.

[0014] For example, in a display substrate provided in at least one embodiment of this disclosure, the light-emitting area of ​​the second color sub-pixel in each pixel unit is greater than the light-emitting area of ​​the third color sub-pixel and less than the light-emitting area of ​​the first color sub-pixel. Corresponding to the second color sub-pixel in each pixel unit, the first electrode layer includes a second hollow portion and a second electrode portion, and the orthographic projection of the second hollow portion on the substrate and the orthographic projection of the spacing portion on the substrate at least partially overlap.

[0015] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projection of the second color sub-pixel on the substrate and the orthographic projection of a data line on the substrate overlap, and at least two second cutout portions with a square planar shape are provided in the second electrode portion corresponding to the second color sub-pixel, and at least two second cutout portions are provided on the same side of the data line.

[0016] For example, in a display substrate provided in at least one embodiment of this disclosure, the orthographic projection of the second color sub-pixel on the substrate and the orthographic projection of a data line on the substrate overlap, and at least one second hollow portion with a rectangular planar shape is provided in the second electrode portion corresponding to the second color sub-pixel, and the at least one second hollow portion with a rectangular planar shape is provided on one side of the data line.

[0017] For example, in a display substrate provided in at least one embodiment of this disclosure, the first color sub-pixel is a blue sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a red sub-pixel.

[0018] For example, in a display substrate provided in at least one embodiment of this disclosure, an insulating material is provided at the edge of the first electrode portion and the edge of the first hollow portion.

[0019] For example, in a display substrate provided in at least one embodiment of this disclosure, the first electrode portion includes at least two silver metal layers respectively sandwiched between metal oxide layers.

[0020] For example, in a display substrate provided in at least one embodiment of this disclosure, in a direction perpendicular to the main surface of the substrate and in a direction from the substrate to the first conductive layer, the first electrode portion includes a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer, and a third metal oxide layer stacked together, wherein the thickness of the first metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the first silver metal layer is in the range of 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the second silver metal layer is in the range of 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer is in the range of 60 angstroms to 85 angstroms.

[0021] For example, in a display substrate provided in at least one embodiment of this disclosure, the thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms.

[0022] At least one embodiment of this disclosure also provides a display device, which includes the display substrate described in any of the above embodiments. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0024] Figures 1A-1D illustrate the process of forming a protrusion on the anode of a light-emitting diode display device.

[0025] Figure 2 is a scanning electron microscope diagram showing the formation of silver oxide after the process shown in Figure 1C;

[0026] Figure 3 is a scanning electron microscope diagram showing the formation of silver metal particles after the process shown in Figure 1D;

[0027] Figure 4 is a schematic diagram of the stacked structure of the anode and the second conductive layer corresponding to the sub-pixels of each color in a light-emitting diode display device.

[0028] Figure 5A is a schematic diagram of the mechanism of forming silver metal particle protrusions on the anode of a light-emitting diode display device;

[0029] Figure 5B is a schematic diagram of the mechanism in which no silver metal particle protrusions are formed on the anode of a light-emitting diode display device;

[0030] Figure 6 is a schematic cross-sectional view of a display substrate provided in at least one embodiment of the present disclosure;

[0031] Figure 7 is a schematic diagram of a planar structure of a display substrate provided in at least one embodiment of the present disclosure;

[0032] Figure 8 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure;

[0033] Figure 9 is a schematic diagram of the planar structure of another display substrate provided in at least one embodiment of the present disclosure;

[0034] Figure 10 is a schematic diagram of the planar structure of another display substrate provided in at least one embodiment of the present disclosure; and

[0035] Figure 11 is a schematic diagram of a display device provided in at least one embodiment of the present disclosure. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0037] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0038] Unless otherwise defined, the features such as "parallel," "perpendicular," and "identical" used in the embodiments of this invention include strictly defined cases of "parallel," "perpendicular," and "identical," as well as cases involving a certain degree of error, such as "approximately parallel," "approximately perpendicular," and "approximately identical." For example, the aforementioned "approximately" may indicate that the difference between the compared objects is within 10% or 5% of the average value of the compared objects. Unless otherwise specified in the following embodiments of this invention, the quantity of a component or element is implied to mean that the component or element may be one or more, or can be understood as at least one. "At least one" refers to one or more, and "more" refers to at least two. In the embodiments of this invention, "same-layer arrangement" refers to the relationship between multiple film layers formed from the same material after undergoing the same step (e.g., a patterning process). Here, "same-layer" does not always mean that the multiple film layers have the same thickness or that the multiple film layers have the same height in a cross-sectional view.

[0039] Mid-sized LED displays are increasingly widely used as a major component of display devices, and improving their yield is a major challenge in their fabrication process. Among the defects in mid-sized LED displays, dark spot defects account for a growing proportion, resulting in significant economic losses. Currently, researchers primarily focus on improving dark spot performance through fabrication processes. However, the inventors of this disclosure have noted that design modifications can also mitigate dark spot defects. Furthermore, the inventors have observed that for mid-sized LED displays, dark spot problems leading to display defects mostly occur in areas of the blue sub-pixels where no conductive layer is present. Therefore, the anode design corresponding to the blue sub-pixels and the film stacking scheme can be specifically considered to improve dark spot performance.

[0040] For example, Figures 1A-1D illustrate the process of forming a protrusion on the anode of a light-emitting diode (LED) display device. As shown in Figure 1A, the LED display device includes a stacked interlayer insulating layer 101, a first conductive layer 102, a first planarization layer 103, a second conductive layer 104, a second planarization layer 105, and an anode 106. The anode 106, with its stacked structure, is made of a silver metal layer sandwiched between two layers of indium tin oxide (ITO), i.e., ITO-Ag-ITO. Furthermore, during the etching process of the second conductive layer 104 to form a patterned structure, a corrosive substance that is difficult to clean forms on the surface of the first planarization layer 103. As shown in Figure 1B, when the second planarization layer 105 is heated and cured, the indium tin oxide included in the anode 106 crystallizes, resulting in small pores forming in both the upper and lower indium tin oxide layers. As shown in Figure 1C, after long-term storage of the LED display device, corrosive substances absorb moisture from the air and undergo further hydrolysis to release corrosive gases. These gases, passing through the pores in the upper and lower indium tin oxide (ITO) layers, react with the silver metal layer located between the two ITO layers to form Ag cavities, i.e., silver oxide. As shown in Figure 1D, in the subsequent heating process, the silver oxide undergoes a reduction reaction to form silver metal particles. The reaction equation for this reduction reaction is as follows: The protrusion of silver metal particles on the surface of anode 106 causes a short circuit between anode 106 and the subsequently formed cathode, resulting in dark spots. In most cases, dark spots occur on blue sub-pixels because the anode area corresponding to the blue sub-pixel is larger, and the opening area of ​​the pixel boundary layer is also larger. For pixels with larger anode areas, corrosive gases below are less likely to volatilize, leading to gas accumulation and corrosion of the anode. For pixels with smaller anode areas, corrosive substances below can volatilize from the periphery of the anode, resulting in less corrosion. Therefore, the corrosion mainly occurs at the location corresponding to the blue sub-pixel, where silver oxide undergoes a reduction reaction in the subsequent heating process to form silver metal particles.

[0041] For example, Figure 2 is a scanning electron microscope schematic diagram of silver oxide formed after the process shown in Figure 1C. As shown in Figure 2, during the etching of the second conductive layer to form a patterned structure, a corrosive substance that is difficult to clean will be formed on the surface of the first planarization layer. After the light-emitting diode display device is stored for a long time, the corrosive substance absorbs water and undergoes a hydrolysis reaction to form corrosive gas. When these gases pass through the small holes formed in the indium tin oxide layer, they react with the silver metal layer to form non-conductive silver oxide.

[0042] For example, Figure 3 is a scanning electron microscope schematic diagram of the formation of silver metal particles after the process shown in Figure 1D. As shown in Figure 3, after silver oxide is reduced to silver metal particles, the silver metal particles protrude on the surface of the anode, which leads to a short circuit between the anode and the cathode, resulting in the phenomenon of dark spots.

[0043] For example, Table 1 is a comparison chart of the design of blue subpixels and the occurrence rate of dark spots in LED display devices of different sizes.

[0044] For example, as shown in Table 1, in the LED display device shown in Example 1, the area of ​​the anode corresponding to the blue sub-pixel is 3527.57 square micrometers, and the area of ​​the anode corresponding to the blue sub-pixel accounts for 48.43% of the total anode area. In the LED display device shown in Example 2, the area of ​​the anode corresponding to the blue sub-pixel is 2963.22 square micrometers, and the area of ​​the anode corresponding to the blue sub-pixel accounts for 46.15% of the total anode area. In the LED display device shown in Example 3, the area of ​​the anode corresponding to the blue sub-pixel is 1707.17 square micrometers, and the area of ​​the anode corresponding to the blue sub-pixel accounts for 52.18% of the total anode area. In the LED display device shown in Example 4, the area of ​​the anode corresponding to the blue sub-pixel is 557.7 square micrometers, and the area of ​​the anode corresponding to the blue sub-pixel accounts for 40.43% of the total anode area. In the LED display device shown in Example 5, the area of ​​the anode corresponding to the blue sub-pixel is 1015.46 square micrometers, and the area of ​​the anode corresponding to the blue sub-pixel accounts for 51.25% of the total anode area. The larger the area of ​​the anode corresponding to the blue sub-pixel, the higher the probability of dark spot phenomenon, regardless of the proportion of the area of ​​the anode corresponding to the blue sub-pixel in the total area of ​​the anode.

[0045] For example, Figure 4 is a schematic diagram of the stacked structure of the anode and the second conductive layer corresponding to each color sub-pixel of a light-emitting diode display device. As can be seen from Figure 4, the anode 106B corresponding to the blue sub-pixel B, located at the top, has the largest area, which is larger than the area of ​​the anode 106R corresponding to the red sub-pixel R and the anode 106G corresponding to the green sub-pixel G. Moreover, there is a large area below the anode 106B corresponding to the blue sub-pixel B that does not have the second conductive layer 104, which corresponds to a large hollow area 104a of the second conductive layer 104. There are a lot of corrosive substances that are difficult to clean in the large hollow area 104a, which leads to subsequent hydrolysis reaction of the corrosive substances and formation of Corrosive gases are blocked from escaping the anode 106B corresponding to the large-area blue sub-pixel B and cannot escape from the light-emitting diode display device. As a result, they react with the indium tin oxide layer included in the anode 106B corresponding to the blue sub-pixel B to form a small hole. The corrosive gases react with the silver metal layer sandwiched between the two layers of indium tin oxide through the small hole to form silver oxide. In the subsequent heating process, the silver oxide undergoes a reduction reaction to form silver metal particles on the surface of the anode 106B corresponding to the blue sub-pixel B. These silver metal particles can cause a short circuit between the anode and the cathode, resulting in a dark spot phenomenon. Based on this, the inventors of this disclosure considered that the structure of the anode could be improved to reduce the risk of dark spot phenomenon.

[0046] It should be noted that although only the corrosion process of anode 106B corresponding to the large blue sub-pixel B is described in Figure 4, it is not limited to this. Anode 106R corresponding to red sub-pixel R and anode 106G corresponding to green sub-pixel G may also be corroded.

[0047] For example, Figure 5A is a schematic diagram of the mechanism for forming silver metal particle protrusions on the anode of a light-emitting diode display device. As shown in Figure 5A, the larger the area of ​​the anode corresponding to the sub-pixel, the more difficult it is for the process of releasing corrosive gases due to the hydrolysis reaction of corrosive substances below the anode, and the more severe the phenomenon of silver metal particle protrusions formed by the corrosion of the anode. For example, Figure 5B is a schematic diagram of the mechanism for the absence of silver metal particle protrusions on the anode of a light-emitting diode display device. As shown in Figure 5B, the smaller the area of ​​the anode corresponding to the sub-pixel, the more easily the corrosive gases released by the hydrolysis reaction of corrosive substances can be discharged from the periphery of the anode, thus making it less likely to corrode the anode. The inventors of this disclosure have noted that a channel for the passage of corrosive gases can be formed in the entire anode of a sub-pixel corresponding to a certain color to discharge the corrosive gases, thereby preventing the corrosive gases from reacting with the silver metal layer located between the two layers of indium tin oxide when passing through the small holes in the upper and lower indium tin oxide layers to form silver oxide, and thus preventing the silver oxide from undergoing a reduction reaction to form silver metal particles.

[0048] At least one embodiment of this disclosure provides a display substrate, which includes: a substrate, pixel units arranged in an array on the substrate, a first conductive layer, a first planarization layer and a first electrode layer sequentially stacked on the substrate, each pixel unit including a plurality of sub-pixels, corresponding to each of at least some of the sub-pixels in each pixel unit, the first conductive layer including a first conductive portion and a spacer portion, the first electrode layer including a first hollow portion and a first electrode portion, and the orthographic projection of the first hollow portion on the substrate and the orthographic projection of the spacer portion on the substrate at least partially overlap, corrosive substances are usually formed at the location of the spacer portion included in the first conductive layer, when the orthographic projection of the first hollow portion on the substrate and the orthographic projection of the spacer portion on the substrate overlap, the corrosive gas formed by the hydrolysis reaction of the corrosive substances will be directly discharged through the first hollow portion included in the first electrode layer, so as not to corrode the first conductive layer to form silver metal particles on the surface of the first conductive layer, and not to cause subsequent dark spot phenomenon.

[0049] For example, FIG6 is a schematic cross-sectional view of a display substrate provided in at least one embodiment of the present disclosure. As shown in FIG6, the display substrate 200 includes: a substrate 201, pixel units 202 arranged in an array on the substrate 201, and a first conductive layer 203, a first planarization layer 204, and a first electrode layer 205 sequentially stacked on the substrate 201. For example, the first electrode layer 205 is electrically connected to the first conductive layer 203 through a via penetrating the first planarization layer 204. Each pixel unit 202 includes a plurality of sub-pixels 2021. Corresponding to at least a portion of each of the sub-pixels 2021 in each pixel unit 202, the first conductive layer 203 includes a first conductive portion 2031 and a spacer portion 2032, and the first electrode layer 205 includes a first cutout portion 2052 and a first electrode portion 2051. The orthographic projection of the first cutout portion 2052 on the substrate 201 and the orthographic projection of the spacer portion 2032 on the substrate 201 at least partially overlap. For example, when the orthographic projection of the first cutout portion 2052 on the substrate 201 overlaps with the orthographic projection of the spacer portion 2032 on the substrate 201, the corrosive gas formed by the hydrolysis reaction of the corrosive substance will be directly discharged through the first cutout portion 2052 included in the first electrode layer 205, so that the first conductive layer 203 will not be corroded to form silver metal particles on the surface of the first conductive layer 203, and there will be no short circuit between the first electrode layer 205 and the second electrode, and no dark spot phenomenon will occur.

[0050] For example, Figure 7 is a schematic diagram of a planar structure of a display substrate provided in at least one embodiment of the present disclosure. As shown in Figure 7, the plurality of sub-pixels 2021 include a first color sub-pixel 2021A, a second color sub-pixel 2021B, and a third color sub-pixel 2021C. The first color sub-pixel 2021A is configured to emit light of a first color, the second color sub-pixel 2021B is configured to emit light of a second color, and the third color sub-pixel 2021C is configured to emit light of a third color.

[0051] For example, in one example, each pixel unit 202 includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, where the blue sub-pixel is the sub-pixel with the largest light-emitting area in pixel unit 202. For example, in one example, the first color sub-pixel 2021A is a blue sub-pixel configured to emit blue light; the second color sub-pixel 2021B is a green sub-pixel configured to emit green light; and the third color sub-pixel 2021C is a red sub-pixel configured to emit red light. In the planar structure diagram shown in Figure 7, the area of ​​the first electrode corresponding to the first color sub-pixel 2021A is larger than the area of ​​the first electrode corresponding to the second color sub-pixel 2021B, and the area of ​​the first electrode corresponding to the second color sub-pixel 2021B is larger than the area of ​​the first electrode corresponding to the third color sub-pixel 2021C. In the following embodiment, the first color sub-pixel 2021A is a blue sub-pixel, the second color sub-pixel 2021B is a green sub-pixel, and the third color sub-pixel 2021C is a red sub-pixel. The example illustrates this by setting the area of ​​the blue sub-pixel, which has a lower lifespan, to a larger size. This increases the lifespan of the blue sub-pixel, thereby balancing the lifespans of different sub-pixels.

[0052] Although only one pixel unit is shown in Figure 7, in conjunction with Figures 6 and 7, the orthographic projection of the first color subpixel 2021A onto the substrate 201 is rectangular. In the actual structure, multiple first color subpixels 2021A are arranged in an array along the row and column directions to form rows of first color subpixels extending along the row direction, and multiple rows of first color subpixels are arranged sequentially along the column direction.

[0053] It should be noted that in the display substrate shown in Figure 7, the orthographic projection of the first color sub-pixel onto the substrate is rectangular. However, embodiments of this disclosure include, but are not limited to, this. In some examples, one of the first, second, and third color sub-pixels is rectangular, while the other two are circular or elliptical. In some examples, two of the first, second, and third color sub-pixels are rectangular, while the remaining one is circular or elliptical. In some examples, all three of the first, second, and third color sub-pixels are circular or elliptical.

[0054] For example, in some examples, the area of ​​the first color sub-pixel 2021A may be smaller than the area of ​​the second color sub-pixel 2021B, and the area of ​​the first color sub-pixel 2021A may be smaller than the area of ​​the third color sub-pixel 2021C. In some display substrates, since some sub-pixels experience less light loss during light emission compared to other sub-pixels, their areas can be appropriately reduced to maximize the area of ​​other sub-pixels with greater light loss. For example, in display devices involving light conversion, the area of ​​sub-pixels with lower light conversion efficiency is designed to be smaller than the area of ​​sub-pixels with higher light conversion efficiency. For example, in display devices involving light conversion, the area of ​​sub-pixels that do not require light conversion is smaller than the area of ​​sub-pixels that do require light conversion.

[0055] For example, in the structure shown in FIG6, the display substrate 200 further includes a pixel defining layer 206 for spacing adjacent sub-pixels 2021, and a second conductive layer 207 and a second planarization layer 208 sequentially disposed on the substrate 201.

[0056] For example, the shape and area of ​​each color sub-pixel can refer to the shape and area of ​​the portion used for light emission. For example, the shape and area of ​​each sub-pixel can be the shape and area defined by the pixel opening of the pixel defining layer 206. The pixel defining layer 206 is disposed on the side of the first electrode layer 205 of the light-emitting diode away from the substrate. A light-emitting functional layer is formed in the opening region of the pixel defining layer 206, and a second electrode of the light-emitting diode is also disposed on the side of the light-emitting functional layer away from the substrate. For example, the light-emitting functional layer includes a light-emitting layer, which includes multiple light-emitting portions disposed in multiple pixel openings and driven by multiple first electrodes (anodes) exposed by the multiple pixel openings to form multiple light-emitting structures of multiple sub-pixels 2021. The shape of the orthographic projection of each sub-pixel 2021 onto the substrate 201 is the shape of the orthographic projection of the pixel opening corresponding to the sub-pixel 2021 onto the substrate 201. That is, the display substrate can be an array substrate for display. It should be noted that the aforementioned "light-emitting part disposed in the pixel opening" means that the light-emitting part is at least partially disposed in the pixel opening, and the size of the light-emitting part can be larger than the size of the pixel opening. Furthermore, the aforementioned light-emitting functional layer can include not only the light-emitting functional layer directly used for emitting light, but also auxiliary light-emitting functional film layers such as hole injection layers, hole transport layers, electron transport layers, and electron injection layers. At least one of these auxiliary light-emitting functional film layers can also be patterned to have a pattern that is the same as or similar to that of the light-emitting layer; at least one of these film layers can also be left unpatterned, and the embodiments of this disclosure do not limit this.

[0057] For example, in one instance, the display substrate 200 can also define the shape of each color sub-pixel by setting a black matrix and a black matrix opening. In this case, the shape of the light-emitting part can be the same as or different from the shape of the corresponding pixel opening or black matrix opening; the center of the shape of the light-emitting part can coincide with or not coincide with the center of the shape of the corresponding pixel opening or black matrix opening.

[0058] For example, in some embodiments, the shape and area of ​​each color sub-pixel may refer to the shape and area of ​​the portion used for light emission. For example, the shape and area of ​​each color sub-pixel may be the shape and area of ​​the corresponding color filter layer in the color filter layer, such as the shape and area of ​​the openings of the color filter layers defined by the black matrix. For example, the first color may be red, the second color may be green, and the third color may be blue. Of course, embodiments of this disclosure include, but are not limited to, the first color, the second color, and the third color may also be other colors.

[0059] For example, in some examples, the display substrate 200 is a display substrate that simultaneously includes a light-emitting element and a color filter. The shape of the orthographic projection of the various color sub-pixels 2021 onto the substrate 201 is the shape of the overlapping portion of the pixel opening of the pixel limiting layer 206 corresponding to the light-emitting element and the corresponding color filter in the direction perpendicular to the substrate 201. For example, the shape of the overlapping portion of the pixel opening of the pixel limiting layer 206 corresponding to the light-emitting element and the corresponding color filter in the direction perpendicular to the substrate 201 is the shape of the pixel opening of the color defining layer 206, and the orthographic projection of the pixel opening of the pixel limiting layer 206 onto the substrate 204 falls within the orthographic projection of the corresponding color filter onto the substrate 201. For example, the shape of the overlapping portion of the pixel opening of the pixel limiting layer 206 corresponding to the light-emitting element and the corresponding color filter in the direction perpendicular to the substrate 201 is the shape of the color filter, and the orthographic projection of the color filter onto the substrate 201 falls within the orthographic projection of the pixel opening of the corresponding pixel limiting layer 206 onto the substrate 201.

[0060] For example, in some examples, in at least a portion of the display area of ​​the display substrate 200, each first color sub-pixel 2021A has the same shape, each second color sub-pixel 2021B has the same shape, and each third color sub-pixel 2021C has the same shape. It should be noted that the aforementioned at least a portion of the display area can be an area with a similar pixel driving method or similar display requirements, such as an area on the display substrate that emits light, a transparent display area, or an area where a camera, fingerprint recognition unit, face recognition unit, color filter unit, or other functional elements are disposed. Of course, the embodiments of this disclosure include, but are not limited to, the aforementioned at least a portion of the display area may also include other areas besides those described above.

[0061] In some examples, the aforementioned at least partial display area may be a region located near the center of the display substrate. Alternatively, the aforementioned at least partial display area may be a region located near the edge of the display area, such as an edge row or edge column.

[0062] For example, the first conductive layer 203 includes data lines and power signal lines spaced apart from each other. The second conductive layer 207 is located on the side of the first conductive layer 203 near the substrate 201. The second conductive layer 207 and the first conductive layer 203 are separated by a second planarization layer 208, and the second conductive layer 207 may include initialization signal lines and power signal connection lines.

[0063] For example, in one example, the first conductive layer 203 and the second conductive layer 207 can be formed of a metallic material, such as any one or more of silver (Ag), copper (Cu), aluminum (Al) and molybdenum (Mo), or an alloy of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). It can be a single-layer structure or a multi-layer composite structure, such as Mo / Cu / Mo.

[0064] For example, referring to the cross-sectional and planar structural schematic diagrams of the display substrate shown in Figures 6 and 7, at least corresponding to the sub-pixel with the largest light-emitting area in each pixel unit 202, the orthographic projection of the first cutout portion 2052 on the substrate 201 and the orthographic projection of the spacing portion 2032 on the substrate 201 at least partially overlap. For example, in the planar structural schematic diagram shown in Figure 7, the first color sub-pixel 2021A has the largest light-emitting area, and the first cutout portion 2052 is provided only at the position of the first electrode layer corresponding to the first color sub-pixel 2021A.

[0065] For example, in the following embodiments, the first color sub-pixel 2021A has the largest light-emitting area and is a blue sub-pixel.

[0066] For example, referring to Figures 6 and 7, the orthographic projection of the first cutout portion 2052 on the substrate 201 is smaller than the orthographic projection of the spacer portion 2032 on the substrate 201, and is located within the orthographic projection of the spacer portion 2032 on the substrate 201. This ensures that the conductivity of the first electrode layer 205 is not weakened while maximizing the discharge of corrosive gas from the first cutout portion 2052.

[0067] For example, in one example, the planar shape of the first cutout 2052 includes at least one of a square, a rectangle, and a rectangle with rounded corners. Figure 7 shows each first cutout 2052 as a square, which facilitates the patterning of the first conductive layer 205 to form a first cutout 2052 with a regular shape. However, the embodiments of this disclosure are not limited to this; any embodiment can be made acceptable as long as corrosive gases can be discharged from the first cutout 2052 and the conductivity of the first electrode layer 205 is not weakened.

[0068] For example, as shown in Figure 7, the first conductive layer 203 includes data lines 2033, and the first cutout portions 2052 in the first electrode portion 2051 corresponding to the blue sub-pixel 2031 are symmetrically arranged with respect to the data lines 2033. That is, in Figure 7, the orthographic projection of the blue sub-pixel on the substrate and the orthographic projection of the two spaced-apart data lines 2033 on the substrate overlap. The first electrode portion 2051 corresponding to the blue sub-pixel has eight square-shaped first cutout portions 2052, and two spaced-apart first cutout portions 2052 are respectively provided on both sides of each data line 2033.

[0069] For example, in the structure shown in Figure 7, the eight square-shaped first hollow portions 2052 in the first electrode portion 2051 corresponding to the blue sub-pixel can be filled with the material of the pixel defining layer. The edges of the first hollow portions 2052 are edge-wrapped with the pixel defining layer material to prevent the exposed silver metal material from being corroded by corrosive gases. Furthermore, the edge-wrapping of the first hollow portions 2052 and the filling of the pixel defining layer material do not require additional process steps; they can be completed directly during the formation of the pixel defining layer. The display substrate shown in Figure 7 facilitates the discharge of corrosive gases, preventing the first electrode portion 2051 from being corroded.

[0070] For example, in the structure of the display substrate shown in Figures 6 and 7, the first electrode layer 205 includes a first indium tin oxide layer, a silver metal layer and a second indium tin oxide layer stacked sequentially, with the first indium tin oxide layer being closer to the substrate than the second indium tin oxide layer.

[0071] For example, in one instance, the thicknesses of the first indium tin oxide layer, the silver metal layer, and the second indium tin oxide layer in the direction perpendicular to the main surface of the substrate 201 are 60 angstroms, 850 angstroms, and 70 angstroms, respectively.

[0072] For example, in another example, considering that the first electrode layer of the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer may also be corroded, the process has also tried to increase the thickness of the topmost indium tin oxide layer, but it cannot completely improve the problem of dark spots. Therefore, it is possible to add a second silver metal layer and a third indium tin oxide layer in sequence to the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer.

[0073] For example, in another example, in the structure shown in FIG7, the first electrode portion 2051 includes at least two silver metal layers respectively sandwiched between metal oxide layers.

[0074] For example, referring to FIG6, in the direction perpendicular to the main surface of the substrate 201 and in the direction from the substrate 201 to the first conductive layer 203, the first electrode portion 2051 includes a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer and a third metal oxide layer stacked together, wherein the thickness of the first metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the first silver metal layer is in the range of 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the second silver metal layer is in the range of 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer is in the range of 60 angstroms to 85 angstroms.

[0075] For example, in one example, the thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms, to ensure that the total thickness of the first electrode layer 205 remains unchanged and does not affect the work function. Although the first indium tin oxide layer may crystallize and form pinholes, the probability of pinholes formed by the two indium tin oxide layers overlapping is small. Corrosive gases at the bottom cannot reach the upper second silver metal layer, and no voids are formed in the second silver metal layer. Therefore, the phenomenon of protrusions forming on the first electrode layer causing dark spots will not occur.

[0076] For example, when the thickness of the first indium tin oxide layer is increased to 100 angstroms, the probability of dark spots is 24.36%. When the thickness of the first indium tin oxide layer is increased to 200 angstroms, the probability of dark spots is 13.28%. When the thickness of the first indium tin oxide layer is increased to 300 angstroms, the probability of dark spots is 4.17%. When the thickness of the second indium tin oxide layer is increased to 100 angstroms, the probability of dark spots is 67.29%. When the thickness of the second indium tin oxide layer is increased to 200 angstroms, the probability of dark spots is 56.10%. When the thickness of the second indium tin oxide layer is increased to 300 angstroms, the probability of dark spots is 54.87%. When the first indium tin oxide layer, the first silver metal layer, the second indium tin oxide layer, the second silver metal layer, and the third indium tin oxide layer are stacked and have thicknesses of 30 Å, 400 Å, 30 Å, 450 Å, and 70 Å respectively in the direction perpendicular to the main surface of the substrate 201, the probability of dark spot phenomenon is 0.

[0077] For example, Figure 8 is a schematic diagram of the planar structure of another display substrate provided in at least one embodiment of the present disclosure. As shown in Figure 8, the orthographic projection of the blue sub-pixel on the substrate and the orthographic projection of the two data lines 2033 spaced apart on the substrate overlap. The first electrode portion 2051 corresponding to the blue sub-pixel 2031 is provided with four first hollow portions 2052 in a planar rectangular shape. Each data line 2033 has a first hollow portion 2052 on both sides.

[0078] For example, in the structure shown in Figure 8, the four rectangular first cutouts 2052 in the first electrode portion 2051 corresponding to the blue sub-pixel can be filled with the material of the pixel defining layer. The edges of the first cutouts 2052 are edge-wrapped with the pixel defining layer material to prevent the exposed silver metal material from being corroded by corrosive gases. Furthermore, the edge-wrapping of the first cutouts 2052 and the filling of the pixel defining layer material do not require additional process steps; they can be completed directly during the formation of the pixel defining layer. The display substrate shown in Figure 8 increases the area of ​​the corrosive gas emission channels, facilitating the emission of corrosive gases and thus better preventing the first electrode portion 2051 from being corroded.

[0079] For example, in the structure of the display substrate shown in FIG8, the first electrode layer 205 includes a first indium tin oxide layer, a silver metal layer and a second indium tin oxide layer stacked sequentially, wherein the first indium tin oxide layer is closer to the substrate than the second indium tin oxide layer.

[0080] For example, in one instance, the thicknesses of the first indium tin oxide layer, the silver metal layer, and the second indium tin oxide layer in the direction perpendicular to the main surface of the substrate 201 are 60 angstroms, 850 angstroms, and 70 angstroms, respectively.

[0081] For example, in another example, in the structure shown in FIG8, the first electrode portion 2051 includes at least two silver metal layers respectively sandwiched between metal oxide layers.

[0082] For example, referring to FIG6, in the direction perpendicular to the main surface of the substrate 201 and in the direction from the substrate 201 to the first conductive layer 203, the first electrode portion 2051 includes a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer and a third metal oxide layer stacked together, wherein the thickness of the first metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the first silver metal layer is in the range of 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer is in the range of 20 angstroms to 45 angstroms, the thickness of the second silver metal layer is in the range of 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer is in the range of 60 angstroms to 85 angstroms.

[0083] For example, in one example, the thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms, to ensure that the total thickness of the first electrode layer 205 remains unchanged and does not affect the work function. Although the first indium tin oxide layer may crystallize and form pinholes, the probability of pinholes formed by the two indium tin oxide layers overlapping is small. Corrosive gases at the bottom cannot reach the upper second silver metal layer, and no voids are formed in the second silver metal layer. Therefore, the phenomenon of protrusions forming on the first electrode layer causing dark spots will not occur.

[0084] For example, FIG9 is a schematic planar structure of another display substrate provided in at least one embodiment of the present disclosure. In FIG9, the first color sub-pixel 2021A is a blue sub-pixel, the second color sub-pixel 2021B is a green sub-pixel, and the third color sub-pixel 2021C is a red sub-pixel, as an example for illustration. In each pixel unit 202, the light-emitting area of ​​the green sub-pixel 2021B is larger than the light-emitting area of ​​the red sub-pixel 2021C, and smaller than the light-emitting area of ​​the blue sub-pixel 2021A. The difference between the display substrate shown in FIG9 and the display substrate shown in FIG8 is that, corresponding to the green sub-pixel in each pixel unit, the first electrode layer 205 includes a second cutout portion 2054 and a second electrode portion 2053, and the orthographic projection of the second cutout portion 2054 on the substrate 201 and the orthographic projection of the spacing portion 2032 on the substrate 201 at least partially overlap.

[0085] For example, in the display substrate shown in FIG9, the orthographic projection of the green sub-pixel 2021B on the substrate and the orthographic projection of a data line 2033 on the substrate overlap. The second electrode portion 2053 corresponding to the green sub-pixel 2021B is provided with at least one second cutout portion 2054 with a planar shape of rectangle. The at least one second cutout portion 2054 with a planar shape of rectangle is provided on one side of the data line 2033.

[0086] It should be noted that the second hollowed-out part 2054 and the aforementioned first hollowed-out part 2052 are collectively referred to as hollowed-out parts.

[0087] For example, in the structure of the display substrate shown in Figures 6 and 9, the first electrode layer 205 includes a first indium tin oxide layer, a silver metal layer and a second indium tin oxide layer stacked sequentially, with the first indium tin oxide layer being closer to the substrate than the second indium tin oxide layer.

[0088] For example, in one instance, the thicknesses of the first indium tin oxide layer, the silver metal layer, and the second indium tin oxide layer in the direction perpendicular to the main surface of the substrate 201 are 60 angstroms, 850 angstroms, and 70 angstroms, respectively.

[0089] For example, in another example, considering that the first electrode layer of the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer may also be corroded, the process has also tried to increase the thickness of the topmost indium tin oxide layer, but it cannot completely improve the problem of dark spots. Therefore, it is possible to add a second silver metal layer and a third indium tin oxide layer in sequence to the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer.

[0090] For example, in another example, in the structure shown in FIG9, the first electrode portion 2051 and the second electrode portion 2053 each include at least two silver metal layers respectively sandwiched between metal oxide layers.

[0091] For example, referring to Figures 6 and 9, in the direction perpendicular to the main surface of the substrate 201 and in the direction from the substrate 201 to the first conductive layer 203, both the first electrode portion 2051 and the second electrode portion 2053 include a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer, and a third metal oxide layer stacked together. The thickness of the first metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the first silver metal layer ranges from 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the second silver metal layer ranges from 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer ranges from 60 angstroms to 85 angstroms.

[0092] For example, in one example, the thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms, to ensure that the total thickness of the first electrode layer 205 remains unchanged and does not affect the work function. Although the first indium tin oxide layer may crystallize and form pinholes, the probability of pinholes formed by the two indium tin oxide layers overlapping is small. Corrosive gases at the bottom cannot reach the upper second silver metal layer, and no voids are formed in the second silver metal layer. Therefore, the phenomenon of protrusions forming on the first electrode layer causing dark spots will not occur.

[0093] For example, Figure 10 is a schematic diagram of a planar structure of another display substrate provided in at least one embodiment of the present disclosure. In Figure 10, the first color sub-pixel 2021A is a blue sub-pixel, the second color sub-pixel 2021B is a green sub-pixel, and the third color sub-pixel 2021C is a red sub-pixel, as an example for illustration. In each pixel unit 202, the light-emitting area of ​​the green sub-pixel 2021B is larger than the light-emitting area of ​​the red sub-pixel 2021C, and smaller than the light-emitting area of ​​the blue sub-pixel 2021A. The display substrate shown in Figure 10 differs from the display substrate shown in Figure 8 in that the orthographic projection of the green sub-pixel on the substrate overlaps with the orthographic projection of a data line 2033 on the substrate. The second electrode portion 2053 corresponding to the green sub-pixel 2021B is provided with at least two second cutout portions 2054 with a planar shape of square, and the at least two second cutout portions 2054 are provided on the same side of the data line 2033.

[0094] For example, in the structure of the display substrate shown in Figures 6 and 10, the first electrode layer 205 includes a first indium tin oxide layer, a silver metal layer and a second indium tin oxide layer stacked sequentially, with the first indium tin oxide layer being closer to the substrate than the second indium tin oxide layer.

[0095] For example, in one instance, the thicknesses of the first indium tin oxide layer, the silver metal layer, and the second indium tin oxide layer in the direction perpendicular to the main surface of the substrate 201 are 60 angstroms, 850 angstroms, and 70 angstroms, respectively.

[0096] For example, in another example, considering that the first electrode layer of the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer may also be corroded, the process has also tried to increase the thickness of the topmost indium tin oxide layer, but it cannot completely improve the problem of dark spots. Therefore, it is possible to add a second silver metal layer and a third indium tin oxide layer in sequence to the three-layer stacked structure of the first indium tin oxide layer, the silver metal layer and the second indium tin oxide layer.

[0097] For example, in another example, in the structure shown in FIG10, the first electrode portion 2051 and the second electrode portion 2053 each include at least two silver metal layers respectively sandwiched between metal oxide layers.

[0098] For example, referring to Figures 6 and 10, in the direction perpendicular to the main surface of the substrate 201 and in the direction from the substrate 201 to the first conductive layer 203, both the first electrode portion 2051 and the second electrode portion 2053 include a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer, and a third metal oxide layer stacked together. The thickness of the first metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the first silver metal layer ranges from 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the second silver metal layer ranges from 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer ranges from 60 angstroms to 85 angstroms.

[0099] For example, in one example, the thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms, to ensure that the total thickness of the first electrode layer 205 remains unchanged and does not affect the work function. Although the first indium tin oxide layer may crystallize and form pinholes, the probability of pinholes formed by the two indium tin oxide layers overlapping is small. Corrosive gases at the bottom cannot reach the upper second silver metal layer, and no voids are formed in the second silver metal layer. Therefore, the phenomenon of protrusions forming on the first electrode layer causing dark spots will not occur.

[0100] For example, in the display substrate provided in the embodiments of this disclosure, special insulating materials may be provided on the edges of the first electrode portion 2051, the first hollow portion 2052, the second electrode portion 2053, and the second hollow portion 2054.

[0101] For example, in the display substrate provided in the embodiments of this disclosure, the first conductive layer 203 can also be compensated to ensure a safe spacing while avoiding short circuits between the cathode and anode that could cause dark spots. This would preserve as much of the pattern of the first conductive layer 203 as possible and reduce the residue of corrosive substances in the spacer 2032, thereby reducing the occurrence of corrosion of the first electrode layer.

[0102] At least one embodiment of this disclosure also provides a display device. FIG11 is a schematic diagram of a display device provided in at least one embodiment of this disclosure. As shown in FIG11, the display device 300 includes the display substrate 200 provided in any of the above examples. Thus, by setting the orthographic projection of the first cutout portion on the substrate to at least partially overlap with the orthographic projection of the spacer portion on the substrate, the display device can increase the area for venting by the vent holes, thereby reducing the probability of dark spots caused by short circuit between the cathode and anode. That is, without increasing the masking process steps, the dark spot defect phenomenon can be effectively improved. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc., and the embodiments of the present invention are not limited thereto.

[0103] The following points need to be explained:

[0104] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure. Other structures can be referred to the general design.

[0105] (2) For clarity, the thickness of layers or regions in the drawings used to describe embodiments of the present disclosure is enlarged or reduced, i.e., these drawings are not drawn to actual scale.

[0106] (3) Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0107] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. The scope of protection of this disclosure should be determined by the scope of protection of the claims.

Claims

1. A display substrate, comprising: Substrate; Pixel units arranged in an array on the substrate; A first conductive layer, a first planarization layer, and a first electrode layer are sequentially stacked on the substrate, wherein... Each pixel unit includes a plurality of sub-pixels, corresponding to at least some of each of the sub-pixels in each pixel unit, the first conductive layer includes a first conductive portion and a spacer portion, the first electrode layer includes a first cutout portion and a first electrode portion, and the orthographic projection of the first cutout portion on the substrate and the orthographic projection of the spacer portion on the substrate at least partially overlap.

2. The display substrate according to claim 1, wherein, At least corresponding to the sub-pixel with the largest light-emitting area in each pixel unit, the orthographic projection of the first cutout portion on the substrate and the orthographic projection of the spacing portion on the substrate at least partially overlap.

3. The display substrate according to claim 2, wherein, Each pixel unit includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein the first color sub-pixel is the sub-pixel with the largest luminous area in the pixel unit.

4. The display substrate according to claim 3, wherein, The orthographic projection of the first cutout portion on the substrate is smaller than the orthographic projection of the spacer portion on the substrate, and is located within the orthographic projection of the spacer portion on the substrate.

5. The display substrate according to claim 3 or 4, wherein, The planar shape of the first hollow portion includes at least one of a square, a rectangle, and a rectangle with rounded corners.

6. The display substrate according to any one of claims 3 to 5, wherein, The first conductive layer includes a data line, and the first hollow portion disposed in the first electrode portion corresponding to the first color sub-pixel is symmetrically disposed with respect to the data line.

7. The display substrate according to claim 6, wherein, The orthographic projection of the first color sub-pixel on the substrate and the orthographic projection of the two data lines spaced apart on the substrate overlap. The first electrode portion corresponding to the first color sub-pixel is provided with eight first cutout portions in a square planar shape. Two first cutout portions are provided on both sides of each data line.

8. The display substrate according to claim 6, wherein, The orthographic projection of the first color sub-pixel on the substrate and the orthographic projection of the two data lines spaced apart on the substrate overlap. The first electrode portion corresponding to the first color sub-pixel is provided with four first hollow portions in the shape of rectangles. Each data line is provided with one first hollow portion on each side.

9. The display substrate according to claim 7 or 8, wherein, In each pixel unit, the light-emitting area of ​​the second color sub-pixel is greater than the light-emitting area of ​​the third color sub-pixel and less than the light-emitting area of ​​the first color sub-pixel. Corresponding to the second color sub-pixel in each pixel unit, the first electrode layer further includes a second hollow portion and a second electrode portion, and the orthographic projection of the second hollow portion on the substrate and the orthographic projection of the spacing portion on the substrate at least partially overlap.

10. The display substrate according to claim 9, wherein, The orthographic projection of the second color sub-pixel on the substrate and the orthographic projection of a data line on the substrate overlap. The second electrode portion corresponding to the second color sub-pixel is provided with at least two second cutout portions with a planar shape of square, and at least two second cutout portions are provided on the same side of the data line.

11. The display substrate according to claim 9, wherein, The orthographic projection of the second color sub-pixel on the substrate and the orthographic projection of a data line on the substrate overlap. The second electrode portion corresponding to the second color sub-pixel is provided with at least one second hollow portion with a rectangular planar shape. The at least one second hollow portion with a rectangular planar shape is provided on one side of the data line.

12. The display substrate according to any one of claims 3 to 11, wherein, The first color sub-pixel is a blue sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a red sub-pixel.

13. The display substrate according to any one of claims 1 to 12, wherein, Insulating material is provided at the edges of the first electrode portion and the first hollow portion.

14. The display substrate according to any one of claims 1 to 13, wherein, The first electrode portion includes at least two silver metal layers sandwiched between metal oxide layers.

15. The display substrate according to claim 14, wherein, In a direction perpendicular to the main surface of the substrate and in a direction from the substrate toward the first conductive layer, the first electrode portion includes a first metal oxide layer, a first silver metal layer, a second metal oxide layer, a second silver metal layer, and a third metal oxide layer stacked together. The thickness of the first metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the first silver metal layer ranges from 350 angstroms to 450 angstroms, the thickness of the second metal oxide layer ranges from 20 angstroms to 45 angstroms, the thickness of the second silver metal layer ranges from 400 angstroms to 500 angstroms, and the thickness of the third metal oxide layer ranges from 60 angstroms to 85 angstroms.

16. The display substrate according to claim 15, wherein, The thickness of the first metal oxide layer is 30 angstroms, the thickness of the first silver metal layer is 400 angstroms, the thickness of the second metal oxide layer is 30 angstroms, the thickness of the second silver metal layer is 450 angstroms, and the thickness of the third metal oxide layer is 70 angstroms.

17. A display device comprising a display substrate according to any one of claims 1 to 16.

Images