Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises a base substrate, a first electrode layer, a light-emitting functional layer, a second electrode layer, and a support structure layer; the first electrode layer is located on the base substrate; the light-emitting functional layer is located on the side of the first electrode layer away from the base substrate; the second electrode layer is located on the side of the light-emitting functional layer away from the first electrode layer; the support structure layer is located on the base substrate. The display substrate comprises a plurality of sub-pixels. Each sub-pixel comprises a first electrode located in the first electrode layer, a light-emitting functional portion located in the light-emitting functional layer, and a second electrode located in the second electrode layer. The support structure layer comprises support pillars and partition structures. The light-emitting functional layer comprises a sharing layer. The partition structures comprise partition grooves, are located between adjacent sub-pixels, and are configured to thin or disconnect the sharing layer. The display substrate can avoid lateral current leakage between sub-pixels, thereby avoiding signal crosstalk between adjacent sub-pixels, and thus improving display quality.

Description

Display substrate and display device Technical Field

[0001] This disclosure relates to a display substrate and a display device. Background Technology

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display devices have gradually become the mainstream display devices due to their advantages such as self-illumination, high color gamut, thinness, high contrast, fast response, low power consumption, and flexible display.

[0003] A typical organic light-emitting diode (OLED) display device includes an anode layer, a pixel defining layer, a light-emitting functional layer, and a cathode layer sequentially disposed on a substrate; the pixel defining layer includes a pixel opening that exposes at least a portion of the anode in the anode layer; the light-emitting functional layer is disposed in contact with the anode through the pixel opening; the cathode layer is disposed on the side of the light-emitting functional layer away from the anode, thereby enabling the light-emitting functional layer to emit light under the drive of the anode and the cathode. Summary of the Invention

[0004] This disclosure provides a display substrate and a display device. In this display substrate, the sidewalls of the partition grooves in the partition structure can thin or disconnect the shared layer in the light-emitting functional layer. By forming the partition structure and the support pillars using the same film layer, the distance between the partition structure and the substrate is larger (the film layer is higher). This arrangement increases the path traversed by the shared layer between adjacent sub-pixels, thereby thinning or disconnecting the shared layer, increasing the lateral resistance of the shared layer, preventing lateral leakage between sub-pixels, avoiding signal crosstalk between adjacent sub-pixels, and thus improving display quality.

[0005] At least one embodiment of this disclosure provides a display substrate, comprising: a substrate; a first electrode layer located on the substrate; a light-emitting functional layer located on a side of the first electrode layer away from the substrate; a second electrode layer located on a side of the light-emitting functional layer away from the first electrode layer; and a support structure layer located on the substrate; the display substrate includes a plurality of sub-pixels, each sub-pixel including a first electrode located in the first electrode layer, a light-emitting functional portion located in the light-emitting functional layer, and a second electrode located in the second electrode layer; the support structure layer includes support pillars and partition structures, the light-emitting functional layer includes a shared layer, the partition structure includes partition grooves, the partition structures are located between adjacent sub-pixels, and are configured to thin or disconnect the shared layer.

[0006] For example, in a display substrate provided in an embodiment of this disclosure, the partition groove includes two groove sidewalls disposed opposite to each other in the arrangement direction of two adjacent sub-pixels, each groove sidewall including a first sidewall, the slope angle of the first sidewall being in the range of 60-80 degrees.

[0007] For example, in a display substrate provided in an embodiment of this disclosure, the partition groove includes a groove bottom, and each groove sidewall further includes a second sidewall. The second sidewall is connected to the groove bottom, and the first sidewall is connected to the second sidewall and located on the side of the second sidewall away from the groove bottom. The slope angle of the second sidewall is smaller than the slope angle of the first sidewall.

[0008] For example, in a display substrate provided in one embodiment of this disclosure, the slope angle of the second sidewall ranges from 10 to 40 degrees.

[0009] For example, in a display substrate provided in an embodiment of this disclosure, the light-emitting functional layer includes a first sub-functional portion located at the top corner of the partition groove, a second sub-functional portion located at the first sidewall, and a third sub-functional portion located at the bottom of the groove, wherein the thickness of the first sub-functional portion and the thickness of the second sub-functional portion are less than the thickness of the third sub-functional portion.

[0010] For example, in a display substrate provided in one embodiment of this disclosure, the dimension of the partition structure in the direction perpendicular to the substrate is smaller than the dimension of the support column in the direction perpendicular to the substrate.

[0011] For example, in a display substrate provided in one embodiment of this disclosure, the partition structure includes a plurality of partition grooves spaced apart in the arrangement direction of two adjacent sub-pixels.

[0012] For example, in a display substrate provided in one embodiment of this disclosure, the depth of the partition groove is less than the dimension of the partition structure in the direction perpendicular to the substrate.

[0013] For example, a display substrate provided in one embodiment of this disclosure further includes: a planarization layer located on the substrate; a pixel defining layer located on the side of the planarization layer away from the substrate, the sub-pixel including a pixel opening located in the pixel defining layer, the pixel defining layer further including a pixel defining portion between adjacent pixel openings, and the first electrode located between the pixel defining layer and the planarization layer and exposed by the pixel opening portion.

[0014] For example, in a display substrate provided in one embodiment of this disclosure, the partition structure is located on the side of the pixel defining portion away from the substrate.

[0015] For example, in a display substrate provided in one embodiment of this disclosure, the pixel defining portion includes a partition opening, and the partition structure is located within the partition opening.

[0016] For example, in a display substrate provided in one embodiment of this disclosure, the orthogonal projection of the partition groove on the substrate includes a bevel or a bent edge, and the extension direction of the bevel is different from the extension direction of the partition structure.

[0017] For example, in a display substrate provided in an embodiment of this disclosure, the shape of the orthographic projection of the partition groove on the substrate includes a plurality of first portions spaced apart in the extending direction of the partition structure and a second portion connecting two adjacent first portions, wherein the extending direction of the second portion intersects the extending direction of the partition structure.

[0018] For example, in a display substrate provided in one embodiment of this disclosure, two second portions and one first portion form a recessed region, wherein the size of the recessed region in the extension direction of the partition structure ranges from 2 to 5 micrometers, and the size of the second portion in the extension direction ranges from 2 to 5 micrometers.

[0019] For example, in a display substrate provided in an embodiment of this disclosure, the plurality of sub-pixels include a plurality of sub-pixel rows, each of the sub-pixel rows extends along a first direction, the plurality of sub-pixel rows are arranged along a second direction, and the first direction intersects the second direction; the partition structure includes a first partition structure extending along the first direction and a second partition structure extending along the second direction.

[0020] For example, in a display substrate provided in an embodiment of this disclosure, the plurality of sub-pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; the plurality of sub-pixel rows include alternating first sub-pixel rows and second sub-pixel rows, the first sub-pixel row includes first sub-pixels and second sub-pixels arranged alternately in the first direction, and the second sub-pixel row includes third sub-pixels arranged in the first direction; at least one first partition structure is provided between adjacent first sub-pixel rows and second sub-pixel rows.

[0021] For example, in a display substrate provided in an embodiment of this disclosure, at least one second partition structure is provided between adjacent first and second sub-pixels in the first sub-pixel row.

[0022] For example, in a display substrate provided in one embodiment of this disclosure, the second partition structure is connected to two first partition structures located on both sides of the first sub-pixel row.

[0023] For example, in a display substrate provided in an embodiment of this disclosure, the plurality of sub-pixels include a plurality of sub-pixel groups, each of the sub-pixel groups including a first sub-pixel and a third sub-pixel arranged in a first direction and two second sub-pixels arranged in a second direction, wherein the first center line connecting the first sub-pixel and the third sub-pixel intersects the second center line connecting the two second sub-pixels; the partition structure is located between adjacent first sub-pixels and second sub-pixels and between adjacent third sub-pixels and second sub-pixels.

[0024] At least one embodiment of this disclosure also provides a display device comprising the display substrate described in any of the preceding claims. Attached Figure Description

[0025] 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.

[0026] Figure 1 is a plan view of a display substrate provided in an embodiment of the present disclosure;

[0027] Figure 2 is a cross-sectional schematic diagram of a display substrate provided in an embodiment of the present disclosure;

[0028] Figure 3 is an enlarged schematic diagram of the partition groove in the substrate shown in Figure 1;

[0029] Figure 4A is a schematic diagram of the stacking of a light-emitting functional layer in a display substrate according to an embodiment of the present disclosure;

[0030] Figure 4B is a schematic diagram of the stacking of a light-emitting functional layer in a display substrate according to an embodiment of the present disclosure;

[0031] Figure 5 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of the present disclosure;

[0032] Figure 6 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of the present disclosure;

[0033] Figure 7 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of the present disclosure;

[0034] Figure 8 is a plan view of another display substrate provided in an embodiment of the present disclosure;

[0035] Figure 9 is a plan view of another display substrate provided in an embodiment of the present disclosure;

[0036] Figure 10 is a plan view of another display substrate provided in an embodiment of the present disclosure;

[0037] Figure 11 is a schematic diagram of a display device provided in an embodiment of the present disclosure. Detailed Implementation

[0038] 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. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0039] 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 an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0040] The features such as "parallel," "perpendicular," and "identical" used in the embodiments of this disclosure include features in the strict sense of "parallel," "perpendicular," and "identical," as well as cases where "approximately parallel," "approximately perpendicular," and "approximately identical" include certain errors. Considering measurement and errors associated with the measurement of a specific quantity (e.g., limitations of the measurement system), they represent the acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of said value. Unless otherwise specified in the following embodiments of this disclosure, the quantity of a component is implied to mean that the component can be one or more, or can be understood as at least one. "At least one" means one or more, and "more" means at least two. In the embodiments of this disclosure, "same layer" 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 multiple film layers have the same thickness or that multiple film layers have the same height in a cross-sectional view.

[0041] The light-emitting functional layers in OLED displays include conductive functional layers such as electron transport layers and hole transport layers, which are typically shared by adjacent sub-pixels. Charge in the light-emitting portion of one sub-pixel can leak through these shared layers to the light-emitting portions of adjacent sub-pixels, creating a lateral leakage current. This leakage current can cause changes in the brightness of adjacent sub-pixels, resulting in a degraded display quality.

[0042] In this embodiment, a display substrate is provided, comprising a substrate, a first electrode layer, a light-emitting functional layer, a second electrode layer, and a support structure layer. The first electrode layer is located on the substrate. The light-emitting functional layer is located on the side of the first electrode layer away from the substrate. The second electrode layer is located on the side of the light-emitting functional layer away from the first electrode layer. The support structure layer is located on the substrate. The display substrate includes a plurality of sub-pixels, each sub-pixel including a first electrode in the first electrode layer, a light-emitting functional portion in the light-emitting functional layer, and a second electrode in the second electrode layer. The support structure layer includes support pillars and a partition structure. The light-emitting functional layer includes a shared layer. The partition structure includes a partition groove. The partition structure is located between adjacent sub-pixels and is configured to thin or disconnect the shared layer. In this display substrate, the sidewalls of the partition grooves in the partition structure can thin or disconnect the shared layer in the light-emitting functional layer. By forming the partition structure and the support pillars using the same film layer, the distance between the partition structure and the substrate is relatively large (the film layer is higher). This configuration increases the path traversed by the shared layer between adjacent sub-pixels, thereby thinning or isolating the shared layer. This increases the lateral resistance of the shared layer, prevents lateral leakage between sub-pixels, avoids signal crosstalk between adjacent sub-pixels, and improves display quality.

[0043] This disclosure also provides a display device including the aforementioned display substrate. Therefore, this display device can also avoid lateral leakage between sub-pixels, thereby preventing signal crosstalk between adjacent sub-pixels and improving display quality.

[0044] The display substrate and display device provided in the embodiments of this disclosure will now be described and explained in detail with reference to the accompanying drawings.

[0045] Figure 1 is a plan view of a display substrate according to an embodiment of the present disclosure; Figure 2 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure. It should be noted that, in order to simultaneously show the partition structure and the support column in the support structure layer, Figure 2 is not strictly cut along a single cutting line.

[0046] As shown in Figures 1 and 2, the display substrate 100 includes a substrate 110, a first electrode layer 120, a light-emitting functional layer 130, a second electrode layer 140, and a support structure layer 250. The first electrode layer 120 is located on the substrate 110. The light-emitting functional layer 130 is located on the side of the first electrode layer 120 away from the substrate 110. The second electrode layer 140 is located on the side of the light-emitting functional layer 130 away from the first electrode layer 120. The support structure layer 250 is located on the substrate 110. The display substrate 100 includes a plurality of sub-pixels 210. Each sub-pixel 210 includes a first electrode 125 located in the first electrode layer 120, a light-emitting functional portion 135 located in the light-emitting functional layer 130, and a second electrode 145 located in the second electrode layer 140. In each sub-pixel 210, the light-emitting functional portion 135 can emit light under the drive of the first electrode 125 and the second electrode 145. The light-emitting functional layer 130 includes a light-emitting functional portion 135 capable of emitting light and a portion located between adjacent light-emitting functional portions 135.

[0047] As shown in Figures 1 and 2, the support structure layer 250 includes support pillars 255 and a partition structure 150. The support structure layer 250 is a film layer for forming the support pillars 255, which in turn support the fine metal mask (FMM) used for vapor deposition during the formation of the light-emitting functional layer 130. The light-emitting functional layer 130 includes a shared layer 137, and the partition structure 150 includes a partition groove 155. The partition structure 150 is located between adjacent sub-pixels 210 and is configured to thin or disconnect the shared layer. It should be noted that the shared layer mentioned above refers to a functional film layer shared by different sub-pixels; that is, the shared layer can extend from the light-emitting functional part of one sub-pixel to the light-emitting functional part of another sub-pixel. For example, the shared layer may include a charge generation layer, an electron transport layer, and a hole transport layer, etc.

[0048] In the display substrate provided in this embodiment, the sidewalls of the partition groove in the partition structure can thin or disconnect the shared layer in the light-emitting functional layer. By forming the partition structure and the support pillar using the same film layer, the distance between the partition structure and the substrate is larger (the film layer is higher). This arrangement increases the path traversed by the shared layer between adjacent sub-pixels, thereby thinning or disconnecting the shared layer, increasing the lateral resistance of the shared layer, preventing lateral leakage between sub-pixels, avoiding signal crosstalk between adjacent sub-pixels, and improving display quality. It should be noted that the increased path traversed by the shared layer between sub-pixels also means that the shared layer needs to be deposited and distributed over a larger area, thus reducing the thickness of the shared layer between sub-pixels.

[0049] In some examples, as shown in Figures 1 and 2, the display substrate 100 further includes a pixel defining layer 160 located between the substrate 110 and the first electrode layer 120. Each sub-pixel 210 includes a pixel opening 165 located within the pixel defining layer 160, the pixel opening 165 exposing at least a portion of the first electrode 125, and the light-emitting functional unit 135 is disposed in contact with the exposed first electrode 125 through the pixel opening 165. The pixel opening 165 may define the effective light-emitting area of ​​the sub-pixel 210, and may also define the range and size of the light-emitting functional unit 135.

[0050] In some examples, as shown in Figures 1 and 2, the pixel defining layer 160 may further include pixel defining portions 162 located between pixel openings 165. The pixel defining portions 162 may cover the edge of the first electrode 125.

[0051] Figure 3 is an enlarged schematic diagram of the partition groove in the display substrate shown in Figure 1. As shown in Figure 3, the partition groove 155 of the partition structure 150 is configured to thin the shared layer 137 of the light-emitting functional layer 130, but not disconnect it. With this configuration, the second electrode layer formed after the light-emitting functional layer is not easily isolated and can maintain connection, thereby reducing the resistance of the second electrode layer and allowing the potential on the second electrode of different sub-pixels to maintain high uniformity. Of course, embodiments of this disclosure include, but are not limited to, this, and the partition structure may also disconnect the light-emitting functional layer.

[0052] In some examples, as shown in Figure 3, the partition groove 155 includes two groove sidewalls 157 disposed opposite each other in the arrangement direction of two adjacent sub-pixels 210; each groove sidewall 157 includes a first sidewall 1571, the slope angle of which ranges from 60 to 80 degrees. Thus, this partition groove can better reduce the thickness of the shared layer of the light-emitting functional layer. It should be noted that the aforementioned slope angle is the angle between the first sidewall and a horizontal plane parallel to the substrate.

[0053] In some examples, the slope angle of the first sidewall 1571 ranges from 65 to 80 degrees, for example, 70 to 80 degrees, which allows for better thinning of the shared layer of the light-emitting functional layer. For instance, when the slope angle of the first sidewall is large, the depth of the partition groove, i.e., the length of the first sidewall, can be increased while maintaining a fixed width of the partition structure, thereby further thinning the shared layer of the light-emitting functional layer. Of course, a larger slope angle on the first sidewall itself also facilitates the thinning of the shared layer.

[0054] In some examples, as shown in Figure 3, the partition groove 155 includes a groove bottom 158, and each groove sidewall 157 further includes a second sidewall 1572. The second sidewall 1572 is connected to the groove bottom 158, and the first sidewall 1571 is connected to the second sidewall 1572 and located on the side of the second sidewall 1572 away from the groove bottom 158. That is, the second sidewall 1572 is the connecting part between the first sidewall 1571 and the groove bottom 158, and the second sidewall 1572 is located below the first sidewall 1571. In this case, the slope angle of the second sidewall 1572 is smaller than the slope angle of the first sidewall 1571. Thus, the second sidewall acts as a buffer, increasing the thickness of the light-emitting functional layer on the second sidewall, preventing the subsequently formed second electrode layer from being disconnected between the groove bottom and the groove sidewall, thereby reducing the resistance of the second electrode layer and maintaining a high degree of uniformity in the potential of the second electrode on different sub-pixels.

[0055] In some examples, the slope angle of the aforementioned second sidewall 1572 ranges from 10 to 40 degrees. Therefore, this second sidewall can effectively serve as a transition and buffer.

[0056] For example, the slope angle of the first sidewall can be 75.4 degrees, and the slope angle of the second sidewall can be 13.8 degrees. In this case, the first sidewall can achieve a better thinning effect, and the second sidewall can also achieve a better transition and buffering effect.

[0057] In some examples, as shown in FIG3, the light-emitting functional layer 130 includes a first sub-functional portion 1321 located at the apex of the partition groove 155, a second sub-functional portion 1322 located at the first sidewall 1571, and a third sub-functional portion 1323 located at the bottom 158 of the groove; the thickness of the first sub-functional portion 1321 and the thickness of the second sub-functional portion 1322 are less than the thickness of the third sub-functional portion 1323. Thus, the partition groove can effectively thin the light-emitting functional layer at the apex and the first sidewall, while accumulating a larger thickness at the second sidewall, thereby preventing the subsequently formed second electrode layer from breaking between the bottom of the groove and the sidewall of the groove.

[0058] In some examples, as shown in FIG3, the light-emitting functional layer 130 described above also includes a fourth sub-functional part 1324 located on the second sidewall 1572, the thickness of the fourth sub-functional part 1324 being greater than the thickness of the second sub-functional part 1322.

[0059] In some examples, as shown in Figure 3, the thickness of the fourth sub-functional unit 1324 is greater than the thickness of the first sub-functional unit 1322. In some cases, the thickness of the fourth sub-functional unit may also be greater than the thickness of the third sub-functional unit, or even greater than the thickness of the light-emitting functional layer outside the partition groove.

[0060] It is worth noting that Figures 2 and 3 show that the light-emitting functional layer 135 of the display substrate 100 includes only one shared layer 137. However, embodiments of this disclosure include, but are not limited to, multiple shared layers in the light-emitting functional layer, or the entire light-emitting functional layer can be considered as a shared layer. For example, the light-emitting functional layer may also include multiple shared layers stacked together. These shared layers may include one or more of the following: hole injection layer, hole transport layer, light-emitting layer, electron transport layer, electron injection layer, and charge generation layer. The specific details of the shared layers are described below based on two examples of the light-emitting functional layer.

[0061] Figure 4A is a schematic diagram of the stacked layers of a light-emitting functional layer in a display substrate according to an embodiment of the present disclosure. As shown in Figure 4A, the light-emitting functional layer 130 includes a hole injection layer 1301, a hole transport layer 1302, a light-emitting layer 1303, an electron transport layer 1304, and an electron injection layer 1305 stacked together. Of course, the embodiments of the present disclosure include, but are not limited to, the light-emitting functional layer may also include other functional film layers such as an electron blocking layer and a hole blocking layer.

[0062] In some examples, the shared layer 137 described above includes conductive films such as hole transport layer 1302 and electron transport layer 1304, and may also include other shared layers such as hole injection layer 1301, light emission layer 1303 and electron injection layer 1305.

[0063] On the other hand, with the continuous development of display technology, people's pursuit of display quality is also increasing. To further reduce power consumption and achieve high brightness, the single-layer light-emitting element in an OLED display device can be replaced with two light-emitting layers, and a charge generation layer (CGL) can be added between adjacent light-emitting layers to achieve a tandem EL design. Since a display device using a tandem EL design has two light-emitting layers, its brightness is approximately twice that of a single light-emitting layer. Therefore, display devices using a tandem EL design have advantages such as long lifespan, low power consumption, and high brightness.

[0064] Figure 4B is a schematic diagram of the stacked layers of a light-emitting functional layer in a display substrate according to an embodiment of the present disclosure. As shown in Figure 4B, the light-emitting functional layer 130 includes a first light-emitting layer 130A, a second light-emitting layer 130B, and a charge-generating layer 130C located between the first light-emitting layer 130A and the second light-emitting layer 130B. In this case, the aforementioned shared layer 137 also includes the aforementioned charge-generating layer 130C.

[0065] In some examples, the first electrode layer 120 described above may be an anode layer, and the first electrode 125 may be an anode; the second electrode layer 140 described above may be a cathode layer, and the second electrode 145 may be a cathode. For example, the cathode may be formed of a material with high conductivity and low work function; for example, the cathode may be made of a metallic material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0066] In some examples, the first electrode layer 120 described above can be made of a metallic material, such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) 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 Ti / Al / Ti, or a stacked structure formed of metal and transparent conductive material, such as reflective materials such as ITO / Ag / ITO, Mo / AlNd / ITO, etc.

[0067] In some examples, the second electrode layer 140 described above may be made of any one or more of magnesium (Mg), silver (Ag), and aluminum (Al), or an alloy made of any one or more of the above metals, or a transparent conductive material, such as indium tin oxide (ITO), or a multilayer composite structure of metal and transparent conductive material.

[0068] In some examples, as shown in Figure 2, the dimension of the partition structure 150 in the direction perpendicular to the substrate 110 is smaller than the dimension of the support pillar 255 in the direction perpendicular to the substrate 110. This avoids the light-emitting functional layer from being too high. For example, a thinning process can be used to make the dimension of the partition structure in the direction perpendicular to the substrate smaller than the dimension of the support pillar in the direction perpendicular to the substrate.

[0069] In some examples, as shown in Figures 2 and 3, the depth of the partition groove 155 is less than the dimension of the partition structure 150 in the direction perpendicular to the substrate 110. That is, the partition groove does not penetrate the partition structure. Of course, embodiments of this disclosure include, but are not limited to, this.

[0070] In some examples, as shown in FIG2, the display substrate 100 further includes a planarization layer 180 located on the substrate 110 and on the side of the pixel defining layer 160 close to the substrate 110; that is, the pixel defining layer 160 is located on the side of the planarization layer 180 away from the substrate 110. The first electrode 125 is located between the pixel defining layer 160 and the planarization layer 180 and is partially exposed by the pixel opening 165.

[0071] In some examples, as shown in FIG2, the partition structure 150 is located on the side of the pixel defining portion 162 away from the substrate 110. As a result, the distance between the partition structure and the substrate is larger (the film layer is higher), which significantly increases the path traversed by the shared layer between adjacent sub-pixels, thereby thinning or isolating the shared layer. This increases the lateral resistance of the shared layer, prevents lateral leakage between sub-pixels, avoids signal crosstalk between adjacent sub-pixels, and improves display quality.

[0072] In some examples, as shown in Figure 1, the orthographic projection of the aforementioned partition groove 155 onto the substrate 110 includes a bent edge 154. By including a bent edge in the orthographic projection of the partition groove onto the substrate, the length of the edge of the partition groove is increased, thereby increasing the area of ​​the sidewalls of the partition groove. This requires the light-emitting functional layer at the location of the partition groove to be distributed on a larger area of ​​the sidewalls, increasing the effective partitioning area of ​​the partition groove. Consequently, the shared layer in the light-emitting functional layer can be thinned or disconnected better and more effectively by the sidewalls of the partition groove, thereby increasing the lateral resistance of the shared layer, preventing lateral leakage, avoiding signal crosstalk between adjacent sub-pixels, and thus improving display quality.

[0073] In some examples, as shown in FIG1, the orthographic projection of the partition groove 155 onto the substrate 110 includes a plurality of first portions 1551 spaced apart along the extension direction of the partition structure 150 and a second portion 1552 connecting two adjacent first portions 1551, the extension direction of the second portion 1552 intersecting the extension direction of the partition structure 150. Thus, the aforementioned second portion effectively increases the area of ​​the sidewalls of the partition groove, effectively thinning or disconnecting the shared layer in the light-emitting functional layer, thereby increasing the lateral resistance of the shared layer, preventing lateral leakage, and avoiding signal crosstalk between adjacent sub-pixels, thereby improving display quality.

[0074] In some examples, as shown in Figure 1, two second portions 1552 and a first portion 1551 form a recessed region 1559, the size of the recessed region 1559 in the extension direction of the partition structure 150 is in the range of 2-5 micrometers, and the size of the second portion 1552 in the extension direction is in the range of 2-5 micrometers.

[0075] For example, the dimensions of the recessed region 1559 in the extension direction of the partition structure 150 are in the range of 2 micrometers, 3 micrometers, 4 micrometers or 5 micrometers; the dimensions of the recessed region 1559 in the extension direction of the second part 1552 are in the range of 2 micrometers, 3 micrometers, 4 micrometers or 5 micrometers.

[0076] In some examples, the dimension of the recessed region 1559 in the extension direction of the partition structure 150 ranges from 3 micrometers; the dimension of the recessed region 1559 in the extension direction of the second portion 1552 also ranges from 3 micrometers. Actual measurements show that the sidewall area of ​​the partition structure 150 provided in this example is increased by 43%, a significant improvement.

[0077] In some examples, as shown in Figure 1, the plurality of sub-pixels 210 include a plurality of sub-pixel rows 220, that is, the plurality of sub-pixels 210 are arranged to form a plurality of sub-pixel rows 220; each sub-pixel row 220 extends along a first direction X, and the plurality of sub-pixel rows 220 are arranged along a second direction Y, wherein the first direction X and the second direction Y intersect; the partition structure 150 includes a first partition structure 150A extending along the first direction X and a second partition structure 150B extending along the second direction Y. Thus, the display substrate includes two partition structures extending in different directions.

[0078] In some examples, as shown in FIG1, at least one of the first partition structure 150A and the second partition structure 150B described above includes the aforementioned bent edge 154. For example, both the first partition structure 150A and the second partition structure 150B described above include the aforementioned bent edge 154, thereby increasing the effective partition area of ​​the first partition structure 150A and the second partition structure 150B through the design of the bent edge.

[0079] In some examples, as shown in Figure 1, the plurality of sub-pixels 210 include a first sub-pixel 211, a second sub-pixel 212, and a third sub-pixel 213; the first sub-pixel 211 is configured to emit light of a first color, the second sub-pixel 212 is configured to emit light of a second color, and the third sub-pixel 213 is configured to emit light of a third color.

[0080] For example, the first color can be red, the second color can be green, and the third color can be blue. Of course, the embodiments disclosed herein are not limited to this, and the first, second, and third colors described above can also be other colors.

[0081] In some examples, as shown in FIG1, the aforementioned plurality of sub-pixel rows 220 include alternating first sub-pixel rows 221 and second sub-pixel rows 222. The first sub-pixel row 221 includes first sub-pixels 211 and second sub-pixels 212 alternately arranged in the first direction X, and the second sub-pixel row 222 includes third sub-pixels 213 arranged in the first direction X. In this case, at least one first partition structure 150A is provided between adjacent first sub-pixel rows 221 and second sub-pixel rows 222. Thus, the first partition structure can effectively thin or isolate the shared layer between sub-pixels in the first sub-pixel row and sub-pixels in the second sub-pixel row, thereby avoiding signal crosstalk between sub-pixels in the first sub-pixel row and sub-pixels in the second sub-pixel row, thereby improving display quality.

[0082] In some examples, as shown in FIG1, in the first sub-pixel row 221, at least one second partition structure 150B is provided between adjacent first sub-pixels 211 and second sub-pixels 212. Thus, the second partition structure 150B can effectively thin or isolate the shared layer between adjacent first sub-pixels 211 and second sub-pixels 212, thereby avoiding signal crosstalk between adjacent first and second sub-pixels in the first sub-pixel row, and thus improving display quality.

[0083] In some examples, as shown in Figure 1, the second partition structure 150B is spaced apart from the two first partition structures 150A located on both sides of the first sub-pixel row 221, which helps to ensure that the second electrode layer can remain continuous at the intervals and ensures that the second electrode layer is not interrupted.

[0084] It is worth noting that, although in the display substrate shown in FIG1, the second partition structure is respectively spaced apart from the two first partition structures located on both sides of the first sub-pixel row, the embodiments of this disclosure include, but are not limited to, that the second partition structure may also be connected to the two first partition structures located on both sides of the first sub-pixel row.

[0085] Figure 5 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of the present disclosure. The display substrate 100 includes a substrate 110, a first electrode layer 120, a light-emitting functional layer, a second electrode layer, and a support structure layer 250. The first electrode layer 120 is located on the substrate 110. The light-emitting functional layer is located on the side of the first electrode layer 120 away from the substrate 110. The second electrode layer is located on the side of the light-emitting functional layer 130 away from the first electrode layer 120. The support structure layer 250 is located on the substrate 110. The display substrate 100 includes a plurality of sub-pixels 210. Each sub-pixel includes a first electrode 125 located in the first electrode layer 120, a light-emitting functional portion located in the light-emitting functional layer, and a second electrode located in the second electrode layer. The support structure layer 250 includes support pillars 255 and partition structures 150. The support structure layer 250 is a film layer for forming the support pillars 255, and the support pillars 255 are used to support the fine metal mask (FMM) used for evaporation during the formation of the light-emitting functional layer 130. The light-emitting functional layer 130 includes a shared layer 137, and the partition structure 150 includes a partition groove 155. The partition structure 150 is located between adjacent sub-pixels and is configured to thin or disconnect the shared layer. It should be noted that, for the sake of simplicity and clarity in showing the shape and position of the partition structure, the light-emitting functional layer and the second electrode layer are not shown in FIG5. The relevant settings of the light-emitting functional layer and the second electrode layer can be found in FIG2 and its related description, and will not be repeated here.

[0086] Unlike the display substrates shown in Figures 1 and 2, as shown in Figure 5, the partition structure 150 in this display substrate 100 includes a plurality of partition grooves 155 spaced apart in the arrangement direction of adjacent sub-pixels. Therefore, by providing a plurality of partition grooves, the display substrate can further improve the partitioning capability of the partition structure, that is, the ability to thin or partition the shared layer of the light-emitting functional layer.

[0087] For example, as shown in FIG5, the partition structure 150 includes two partition grooves 155 spaced apart in the arrangement direction of two adjacent sub-pixels 210. Of course, the embodiments of this disclosure include, but are not limited to, the partition structure may include a greater number of partition grooves depending on the size of the partition structure.

[0088] In some examples, as shown in FIG5, the display substrate 100 includes a pixel defining layer 160 and a planarization layer 180; the planarization layer 180 is located on the substrate 110 and on the side of the pixel defining layer 160 closer to the substrate 110; that is, the pixel defining layer 160 is located on the side of the planarization layer 180 away from the substrate 110. A first electrode 125 is located between the pixel defining layer 160 and the planarization layer 180 and is partially exposed by a pixel opening 165. Each sub-pixel 210 includes a pixel opening 165 located in the pixel defining layer 160, the pixel opening 165 exposing at least a portion of the first electrode 125, and the light-emitting functional part can be contacted and disposed with the exposed first electrode 125 through the pixel opening 165. The pixel opening 165 can define the effective light-emitting area of ​​the sub-pixel 210, and can also define the range and size of the light-emitting functional part.

[0089] In some examples, as shown in FIG5, the pixel defining layer 160 may further include pixel defining portions 162 located between pixel openings 165. Pixel defining portions 162 may cover the edge of the first electrode 125. A partition structure 150 is located on the side of the pixel defining portion 162 away from the substrate 110. Thus, the distance between the partition structure and the substrate is larger (the film layer is higher), significantly increasing the path traversed by the shared layer between adjacent sub-pixels. This thins or isolates the shared layer, thereby increasing the lateral resistance of the shared layer, preventing lateral leakage between sub-pixels, and thus avoiding signal crosstalk between adjacent sub-pixels, thereby improving display quality.

[0090] Figure 6 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of the present disclosure. As shown in Figure 6, the display substrate 100 includes a substrate 110, a first electrode layer 120, a light-emitting functional layer, a second electrode layer, and a support structure layer 250. The first electrode layer 120 is located on the substrate 110. The light-emitting functional layer is located on the side of the first electrode layer 120 away from the substrate 110. The second electrode layer is located on the side of the light-emitting functional layer 130 away from the first electrode layer 120. The support structure layer 250 is located on the substrate 110. The display substrate 100 includes a plurality of sub-pixels 210. Each sub-pixel 210 includes a first electrode 125 located in the first electrode layer 120, a light-emitting functional portion located in the light-emitting functional layer, and a second electrode located in the second electrode layer. The support structure layer 250 includes support pillars 255 and partition structures 150. The support structure layer 250 is a film layer for forming the support pillars 255, and the support pillars 255 are used to support the fine metal mask (FMM) used for vapor deposition when forming the light-emitting functional layer 130. The light-emitting functional layer 130 includes a shared layer 137, and the partition structure 150 includes a partition groove 155. The partition structure 150 is located between adjacent sub-pixels 210 and is configured to thin or disconnect the shared layer. It should be noted that, for the sake of simplicity and clarity in showing the shape and position of the partition structure, the light-emitting functional layer and the second electrode layer are not shown in FIG6. The relevant settings of the light-emitting functional layer and the second electrode layer can be found in FIG2 and its related description, and will not be repeated here.

[0091] As shown in FIG. 6, the display substrate 100 includes a pixel defining layer 160 and a planarization layer 180. The planarization layer 180 is located on a substrate 110, a first electrode layer 120 is located on the side of the planarization layer 180 away from the substrate, and the pixel defining layer 160 is located on the side of the planarization layer 180 and the pixel defining layer 160 away from the substrate 110. A first electrode 125 is located between the pixel defining layer 160 and the planarization layer 180 and is partially exposed by a pixel opening 165. Each sub-pixel 210 includes a pixel opening 165 located in the pixel defining layer 160, the pixel opening 165 exposing at least a portion of the first electrode 125, and a light-emitting functional part is disposed in contact with the exposed first electrode 125 through the pixel opening 165. The pixel opening 165 can define the effective light-emitting area of ​​the sub-pixel 210, and can also define the range and size of the light-emitting functional part. The pixel defining layer 160 may also include a pixel defining portion 162 located between the pixel openings 165. The pixel defining portion 162 may cover the edge of the first electrode 125.

[0092] Unlike the display substrates shown in Figures 1 and 2, the partition structure 150 of this display substrate is not located on the side of the pixel defining portion 162 away from the substrate 110. As shown in Figure 6, the pixel defining portion 162 includes a partition opening 1625, and the partition structure 150 is located within the partition opening 1625. Therefore, both the partition opening 1625 and the partition structure 150 of the pixel defining portion 162 can increase the path traversed by the shared layer between adjacent sub-pixels, effectively thinning or isolating the shared layer. This increases the lateral resistance of the shared layer, prevents lateral leakage between sub-pixels, avoids signal crosstalk between adjacent sub-pixels, and improves display quality.

[0093] Figure 7 is a cross-sectional schematic diagram of another display substrate provided in an embodiment of this disclosure. Referring to Figure 7, similar to the display substrate shown in Figure 6, the partition structure 150 of this display substrate is not disposed on the side of the pixel limiting portion 162 away from the substrate 110, but is located in the partition opening 1625 in the pixel limiting portion 162. Therefore, both the partition opening of the pixel limiting portion and the partition structure can increase the path traversed by the shared layer between adjacent sub-pixels, effectively thinning or isolating the shared layer, thereby increasing the lateral resistance of the shared layer, preventing lateral leakage between sub-pixels, and thus avoiding signal crosstalk between adjacent sub-pixels, thereby improving display quality.

[0094] Referring to Figure 7, unlike the display substrate shown in Figure 6, the partition structure 150 in this display substrate 100 includes a plurality of partition grooves 155 spaced apart in the arrangement direction of two adjacent sub-pixels 210. Thus, by providing a plurality of partition grooves, the display substrate can further improve the partitioning capability of the partition structure, that is, the ability to thin or partition the shared layer of the light-emitting functional layer.

[0095] For example, as shown in FIG7, the partition structure 150 includes two partition grooves 155 spaced apart in the arrangement direction of two adjacent sub-pixels 210. Of course, the embodiments of this disclosure include, but are not limited to, the partition structure may include a greater number of partition grooves depending on the size of the partition structure.

[0096] Figure 8 is a planar schematic diagram of another display substrate provided in an embodiment of this disclosure. As shown in Figure 8, the shape of the orthogonal projection of the partition groove 155 on the substrate 110 includes a plurality of first portions 1551 spaced apart in the extending direction of the partition structure 150 and a second portion 1552 connecting two adjacent first portions 1551. The extending direction of the second portion 1552 intersects the extending direction of the partition structure 150. Therefore, the second portion can effectively increase the area of ​​the sidewall of the partition groove, effectively thinning or disconnecting the shared layer in the light-emitting functional layer, thereby increasing the lateral resistance of the shared layer, preventing lateral leakage, and avoiding signal crosstalk between adjacent sub-pixels, thus improving display quality. It should be noted that the vertical position of the partition structure in the display substrate shown in Figure 8 can be as shown in Figure 2, or refer to the situations shown in Figures 5-7.

[0097] In some examples, as shown in Figure 8, two second portions 1552 and a first portion 1551 form a recessed region 1559. The dimensions of the recessed region 1559 in the extension direction of the partition structure 150 range from 2 to 5 micrometers, and the dimensions in the extension direction of the second portions 1552 range from 1 to 3 micrometers.

[0098] For example, the dimensions of the recessed region 1559 in the extension direction of the partition structure 150 range from 2 micrometers, 3 micrometers, 4 micrometers or 5 micrometers; the dimensions of the recessed region 1559 in the extension direction of the second part 1552 range from 1 micrometer, 1.5 micrometers, 2 micrometers or 3 micrometers.

[0099] In some examples, the dimension of the recessed region 1559 in the extension direction of the partition structure 150 ranges from 3 micrometers; the dimension of the recessed region 1559 in the extension direction of the second portion 1552 ranges from 1.5 micrometers. Actual measurements show that the sidewall area of ​​the partition structure 150 provided in this example is increased by 22%, a significant improvement.

[0100] In some examples, as shown in Figure 8, the plurality of sub-pixels 210 include a plurality of sub-pixel rows 220, that is, the plurality of sub-pixels 210 are arranged to form a plurality of sub-pixel rows 220; each sub-pixel row 220 extends along a first direction X, and the plurality of sub-pixel rows 220 are arranged along a second direction Y, wherein the first direction X and the second direction Y intersect; the partition structure 150 includes a first partition structure 150A extending along the first direction X and a second partition structure 150B extending along the second direction Y. Thus, the display substrate includes two partition structures extending in different directions.

[0101] In some examples, as shown in Figure 8, at least one of the first partition structure 150A and the second partition structure 150B described above includes the first portion and the second portion described above. For example, both the first partition structure 150A and the second partition structure 150B described above include the first portion and the second portion described above, and the effective partition area of ​​the first partition structure 150A and the second partition structure 150B can be increased by designing the bent edge.

[0102] In some examples, as shown in FIG8, the plurality of sub-pixels 210 includes a first sub-pixel 211, a second sub-pixel 212, and a third sub-pixel 213; the first sub-pixel 211 is configured to emit light of a first color, the second sub-pixel 212 is configured to emit light of a second color, and the third sub-pixel 213 is configured to emit light of a third color. The aforementioned plurality of sub-pixel rows 220 include alternating first sub-pixel rows 221 and second sub-pixel rows 222. The first sub-pixel row 221 includes alternating first sub-pixels 211 and second sub-pixels 212 in a first direction X, and the second sub-pixel row 222 includes third sub-pixels 213 arranged in the first direction X. In this case, at least one first partition structure 150A is provided between adjacent first sub-pixel rows 221 and second sub-pixel rows 222. Thus, the first partition structure can effectively thin or partition the shared layer between sub-pixels in the first sub-pixel row and sub-pixels in the second sub-pixel row, thereby avoiding signal crosstalk between sub-pixels in the first sub-pixel row and sub-pixels in the second sub-pixel row, thereby improving display quality.

[0103] In some examples, as shown in FIG8, in the first sub-pixel row 221, at least one second partition structure 150B is provided between adjacent first sub-pixels 211 and second sub-pixels 212. Thus, the second partition structure 150B can effectively thin or isolate the shared layer between adjacent first sub-pixels 211 and second sub-pixels 212, thereby avoiding signal crosstalk between adjacent first and second sub-pixels in the first sub-pixel row, and thus improving display quality.

[0104] In some examples, as shown in Figure 8, the second partition structure 150B is connected to two first partition structures 150A located on both sides of the first sub-pixel row 221. Thus, the first sub-pixel 211 or the second sub-pixel 212 in the first sub-pixel row 221 is completely surrounded by the partition structure 150, thereby completely separating it from the adjacent sub-pixels. Therefore, signal crosstalk between the three types of sub-pixels can be better avoided.

[0105] Figure 9 is a planar schematic diagram of another display substrate provided in an embodiment of this disclosure. As shown in Figure 9, the display substrate 100 includes a plurality of sub-pixels 210 and a partition structure 150; the plurality of sub-pixels 210 includes a plurality of sub-pixel groups 250, each sub-pixel group 250 including a first sub-pixel 211 and a third sub-pixel 213 arranged in a first direction X and two second sub-pixels 212 arranged in a second direction, the first center line connecting the first sub-pixel 211 and the third sub-pixel 213 intersects the second center line connecting the two second sub-pixels 212; the partition structure 150 is located between adjacent first sub-pixels 211 and second sub-pixels 212 and between adjacent third sub-pixels 213 and second sub-pixels 212. That is to say, the relevant settings of the partition structure provided in the embodiment of this disclosure can be applied not only to the pixel arrangement structure shown in Figure 1, but also to the pixel arrangement structure shown in Figure 9. It should be noted that the vertical position of the partition structure in the display substrate shown in Figure 9 can be the case shown in Figure 2, or refer to the cases shown in Figures 5-7.

[0106] In some examples, as shown in Figure 9, the orthographic projection of the first sub-pixel 211 onto the substrate 110 is an inverted ellipse, i.e., an ellipse with one edge rounded. The orthographic projection of the second sub-pixel 212 onto the substrate 110 can be either an inverted ellipse or a circle. The orthographic projection of the third sub-pixel 213 onto the substrate 110 can also be either an inverted ellipse or a circle. It should be noted that the radius of curvature of one edge of the inverted ellipse is different from that of the other edge, which can improve color separation.

[0107] In some examples, the first sub-pixel 211 is configured to emit light of a first color, the second sub-pixel 212 is configured to emit light of a second color, and the third sub-pixel 213 is configured to emit light of a third color. 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, second, and third colors described above may also be other colors.

[0108] In some examples, as shown in Figure 9, the partition structure 150 described above includes the first part and the second part, and the effective partition area of ​​the partition structure 150 can be increased by means of a bent edge design.

[0109] Figure 10 is a planar schematic diagram of another display substrate provided in an embodiment of the present disclosure. As shown in Figure 10, the display substrate 100 includes a plurality of sub-pixels 210 and a partition structure 150; the plurality of sub-pixels 210 includes a plurality of sub-pixel groups 250, each sub-pixel group 250 including a first sub-pixel 211 and a third sub-pixel 213 arranged in the second direction Y and two second sub-pixels 212 arranged in the first direction X, the first center line connecting the first sub-pixel 211 and the third sub-pixel 213 intersects the second center line connecting the two second sub-pixels 212; the partition structure 150 is located between adjacent first sub-pixels 211 and second sub-pixels 212 and between adjacent third sub-pixels 213 and second sub-pixels 212. That is to say, the relevant settings of the partition structure provided in the embodiment of the present disclosure can be applied not only to the pixel arrangement structure shown in Figure 1, but also to the pixel arrangement structure shown in Figure 10. It should be noted that the vertical position of the partition structure in the display substrate shown in Figure 10 can be the case shown in Figure 2, or refer to the cases shown in Figures 5-7.

[0110] In some examples, as shown in Figure 10, the orthographic projection of the first sub-pixel 211 onto the substrate 110 is a rounded rectangle or a rounded square; the orthographic projection of the second sub-pixel 212 onto the substrate 110 can be a rounded rectangle; the orthographic projection of the third sub-pixel 213 onto the substrate 110 can also be a chamfered rectangle, that is, a shape formed by chamfering one corner of a rounded rectangle.

[0111] In some examples, the first sub-pixel 211 is configured to emit light of a first color, the second sub-pixel 212 is configured to emit light of a second color, and the third sub-pixel 213 is configured to emit light of a third color. 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, second, and third colors described above may also be other colors.

[0112] In some examples, as shown in Figure 10, the partition structure 150 described above includes the first part and the second part, and the effective partition area of ​​the partition structure 150 can be increased by means of a bent edge design.

[0113] At least one embodiment of this disclosure also provides a display device. FIG11 is a schematic diagram of a display device provided in an embodiment of this disclosure. As shown in FIG11, the display device 500 includes the display substrate 100 described above. Thus, the display device can also avoid lateral leakage between sub-pixels, thereby avoiding signal crosstalk between adjacent sub-pixels and improving display quality.

[0114] In some examples, the aforementioned display device may be an electronic product with display function, such as a television, computer monitor, laptop computer, tablet computer, mobile phone, navigator, or in-vehicle display.

[0115] The following points need to be explained:

[0116] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0117] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0118] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A display substrate, comprising: Substrate; The first electrode layer is located on the substrate. A light-emitting functional layer is located on the side of the first electrode layer away from the substrate. The second electrode layer is located on the side of the light-emitting functional layer away from the first electrode layer; as well as A supporting structure layer is located on the substrate. The display substrate includes a plurality of sub-pixels, each sub-pixel including a first electrode located in the first electrode layer, a light-emitting functional part located in the light-emitting functional layer, and a second electrode located in the second electrode layer; The support structure layer includes support pillars and partition structures. The light-emitting functional layer includes a shared layer. The partition structure includes partition grooves. The partition structure is located between adjacent sub-pixels and is configured to thin or disconnect the shared layer. 2.The display substrate of claim 1, wherein, The partition groove includes two groove sidewalls disposed opposite each other in the arrangement direction of two adjacent sub-pixels. Each of the groove sidewalls includes a first sidewall, the slope angle of which ranges from 60 to 80 degrees.

3. The display substrate according to claim 2, wherein, The partition groove includes a groove bottom, and each groove sidewall further includes a second sidewall connected to the groove bottom. The first sidewall is connected to the second sidewall and located on the side of the second sidewall away from the groove bottom. The slope angle of the second sidewall is smaller than that of the first sidewall.

4. The display substrate according to claim 2, wherein, The slope angle of the second sidewall ranges from 10 to 40 degrees.

5. The display substrate according to claim 3, wherein, The light-emitting functional layer includes a first sub-functional part located at the top corner of the partition groove, a second sub-functional part located on the first sidewall, and a third sub-functional part located at the bottom of the groove. The thickness of the first sub-functional part and the thickness of the second sub-functional part are less than the thickness of the third sub-functional part.

6. The display substrate according to any one of claims 1-4, wherein, The dimension of the partition structure in the direction perpendicular to the substrate is smaller than the dimension of the support column in the direction perpendicular to the substrate.

7. The display substrate according to any one of claims 1-6, wherein, The partition structure includes a plurality of partition grooves spaced apart in the arrangement direction of two adjacent sub-pixels.

8. The display substrate according to any one of claims 1-7, wherein, The depth of the partition groove is less than the dimension of the partition structure in the direction perpendicular to the substrate.

9. The display substrate according to any one of claims 1-7, further comprising: A planarization layer is located on the substrate. A pixel defining layer is located on the side of the planarization layer away from the substrate. The sub-pixel includes a pixel opening located within the pixel defining layer, and the pixel defining layer further includes pixel defining portions between adjacent pixel openings. The first electrode is located between the pixel defining layer and the planarization layer and is exposed by the pixel opening portion.

10. The display substrate according to claim 9, wherein, The partition structure is located on the side of the pixel defining portion away from the substrate.

11. The display substrate according to claim 8, wherein, The pixel defining portion includes a partition opening, and the partition structure is located within the partition opening.

12. The display substrate according to any one of claims 1-11, wherein, The orthographic projection of the partition groove on the substrate includes a beveled edge or a bent edge, and the extension direction of the beveled edge is different from the extension direction of the partition structure.

13. The display substrate according to claim 12, wherein, The shape of the orthographic projection of the partition groove on the substrate includes a plurality of first portions spaced apart in the extension direction of the partition structure and a second portion connecting two adjacent first portions, wherein the extension direction of the second portion intersects the extension direction of the partition structure.

14. The display substrate according to claim 13, wherein, The two second portions and one first portion form a recessed area, the size of which is in the extension direction of the partition structure and in the extension direction of the second portion, is in the range of 2-5 micrometers.

15. The display substrate according to any one of claims 1-14, wherein, The plurality of sub-pixels includes a plurality of sub-pixel rows, each of the sub-pixel rows extending along a first direction, the plurality of sub-pixel rows being arranged along a second direction, the first direction intersecting the second direction; The partition structure includes a first partition structure extending along the first direction and a second partition structure extending along the second direction.

16. The display substrate according to claim 15, wherein, The plurality of sub-pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel; Multiple subpixel rows include alternating first subpixel rows and second subpixel rows, the first subpixel row including alternating first and second subpixels in the first direction, and the second subpixel row including third subpixels arranged in the first direction; At least one first partition structure is provided between adjacent first sub-pixel rows and second sub-pixel rows.

17. The display substrate according to claim 16, wherein, In the first sub-pixel row, at least one second partition structure is provided between adjacent first and second sub-pixels.

18. The display substrate according to claim 17, wherein, The second partition structure is connected to the two first partition structures located on both sides of the first sub-pixel row.

19. The display substrate according to any one of claims 1-14, wherein, The plurality of sub-pixels includes a plurality of sub-pixel groups, each sub-pixel group including a first sub-pixel and a third sub-pixel arranged in a first direction and two second sub-pixels arranged in a second direction, wherein the first center line connecting the first sub-pixel and the third sub-pixel intersects the second center line connecting the two second sub-pixels; The partition structure is located between adjacent first and second sub-pixels and between adjacent third and second sub-pixels.

20. A display device comprising a display substrate according to any one of claims 1-19.

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