An array substrate, a display device, and a manufacturing method of the array substrate

Abstract

The present invention relates to the field of display technologies, and discloses an array substrate, a display device, and a manufacturing method of the array substrate. The array substrate includes a substrate, a plurality of first pixel definition layers, and a plurality of second pixel definition layers. The plurality of first pixel definition layers and the plurality of second pixel definition layers jointly define a plurality of pixel regions arranged in an array; the first pixel definition layers are used to separate two adjacent columns of pixel regions in a first direction; a partition component disposed on the substrate and corresponding to each column of pixel regions one by one, wherein the partitions in each partition component extend along a second direction, and the height of each partition is used to cooperate with the property of the first pixel definition layer, so that pixel ink can be uniformly filled between corresponding adjacent two first pixel definition layers. The array substrate, the display device, and the manufacturing method of the array substrate improve the problem that when an inkjet printing adopts a line bank structure, the emission uniformity of an OLED display device is poor along the row direction of the light-emitting sub-pixels.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and in particular, to an array substrate, a display device, and a method for manufacturing an array substrate. Background Art

[0002] OLED (Organic Light-Emitting Diode) display devices are regarded as the next-generation display technologies due to their advantages such as self-luminescence, fast response, wide viewing angle, high brightness, vivid colors, thinness, and light weight.

[0003] The film-forming methods of OLED mainly include evaporation process and solution process. The evaporation process is relatively mature in small-size applications and has been applied in mass production; the film-forming methods of solution-process OLED mainly include inkjet printing, nozzle coating, spin coating, screen printing, etc. Among them, inkjet printing technology has become the main method for realizing mass production of large-size OLEDs due to its high material utilization rate and the ability to achieve large sizes.

[0004] However, when inkjet printing, there will be a phenomenon of uneven picture. On the one hand, it is difficult to ensure that the inkjet volume of each nozzle is exactly the same. Therefore, after the device is lit, the human eye can distinguish the difference in light emission uniformity between pixels caused by this volume error; on the other hand, because the size of the pixel-defined area is small, the liquid flow effect is poor, and it is difficult to form a film with uniform thickness, thus affecting the light emission quality of the backplane.

[0005] In the related art, a line bank is used to improve the light emission uniformity problem of display devices, that is, two or more consecutive light-emitting sub-pixels on the same column (the light-emitting sub-pixels on the same column have the same color) are restricted within a bank (barrier wall), and at the same time, the part of the bank located between two light-emitting sub-pixels is lower than the film thickness of the light-emitting sub-pixels, and the part of the bank extending along the column direction of the light-emitting sub-pixels is higher than the film thickness of the light-emitting sub-pixels. In this way, the pixel inks of the light-emitting sub-pixels with the same color within one bank can flow and spread evenly with each other.

[0006] The disadvantage of this method is that the distance between the two parts of the bank extending along the column direction of the light-emitting sub-pixels (the two parts are opposite to each other) is small, and the light emission uniformity of the display device is still not good along the row direction of the light-emitting sub-pixels (that is, the direction in which one part of the two parts of the bank extending along the column direction of the light-emitting sub-pixels points to the other part). Summary of the Invention

[0007] The present invention provides an array substrate, a display device, and a method for manufacturing an array substrate, which are used to improve the problem that the light emission uniformity of OLED display devices is not good along the row direction of light-emitting sub-pixels when inkjet printing adopts a line bank structure.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An array substrate, comprising:

[0010] A substrate;

[0011] A plurality of first pixel definition layers arranged along a first direction on the substrate and a plurality of second pixel definition layers arranged along a second direction on the substrate, the first pixel definition layers extending along the second direction, the second pixel definition layers extending along the first direction, the first direction intersecting the second direction, and the plurality of first pixel definition layers and the plurality of second pixel definition layers jointly defining a plurality of pixel regions arranged in an array; wherein, the first pixel definition layers are used to separate two adjacent columns of pixel regions in the first direction, and the height of the second pixel definition layers is lower than the height of the first pixel definition layers; a partition assembly disposed on the substrate and corresponding to each column of pixel regions one by one, and partitions in each partition assembly all extend along the second direction, and the height of each partition is used to cooperate with the property of the first pixel definition layer so that pixel ink can be uniformly filled between two adjacent first pixel definition layers corresponding thereto.

[0012] Taking the arrangement direction of sub-pixels emitting the same color light as the column direction and the arrangement direction of sub-pixels emitting different color lights as the row direction, in the prior art, there are two reasons for the poor row direction luminance uniformity after pixel film formation. One is that the pixel definition layer extending along the column direction is a liquid-friendly pixel definition layer, and the pixel ink climbs on the pixel definition layer, making the film thickness of the pixel ink near this pixel definition layer greater than that of other parts, resulting in uneven film thickness or non-emission of the pixel ink. The other is that the pixel definition layer extending along the column direction is a liquid-repellent pixel definition layer, resulting in the film thickness of the pixel ink near this pixel definition layer being smaller than that of other parts, resulting in uneven film thickness or leakage of the pixel ink.

[0013] In the array substrate provided by the present invention, a plurality of first pixel definition layers arranged along the first direction and extending along the second direction and a plurality of second pixel definition layers arranged along the second direction and extending along the first direction are provided on the substrate, and a plurality of pixel regions arranged in an array are jointly defined by the plurality of first pixel definition layers and the plurality of second pixel definition layers; a partition assembly corresponding to each column of pixel regions one by one (that is, a partition assembly is provided between every two adjacent first pixel definition layers) is further provided on the substrate, and the partition assembly extends along the second direction. The height of the partition in the partition assembly can cooperate with the property of the first pixel definition layer, so that pixel ink can be uniformly filled between two adjacent first pixel definition layers corresponding thereto, and the problem of poor luminance uniformity of the OLED display device in the row direction of the pixel region is improved.

[0014] Optionally, the first pixel definition layer is a lyophilic pixel definition layer;

[0015] The partitions in the partition assembly are divided into a plurality of partition groups arranged at intervals in the first direction, and within the pixel region, in the first direction, the heights of the partition groups gradually decrease from the middle to both sides.

[0016] Optionally, each partition group includes one partition.

[0017] Optionally, each partition group includes at least two partitions arranged at intervals in the first direction. Within the same pixel region, the height of the partition closer to the middle of the pixel region is greater than or equal to the height of the partition farther from the middle of the pixel region.

[0018] Optionally, within the same pixel region, in the first direction, the heights of the partition groups gradually decrease arithmetically from the middle to both sides.

[0019] Optionally, the first pixel definition layer is a lyophobic pixel definition layer;

[0020] The partitions in the partition assembly are divided into a plurality of partition groups arranged at intervals in the first direction, and within the pixel region, in the first direction, the heights of the partition groups gradually increase from the middle of the same column of pixel regions to both sides.

[0021] Optionally, each partition group includes one partition.

[0022] Optionally, each partition group includes at least two partitions arranged at intervals. Within the same pixel region, in the first direction, the height of the partition closer to the middle of the pixel region is less than or equal to the height of the partition farther from the middle of the pixel region in the first direction.

[0023] Optionally, within the same pixel region, in the first direction, the heights of the partition groups gradually increase arithmetically from the middle to both sides.

[0024] Optionally, within the same pixel region, the height of the highest partition is 0.6 - 1.5 micrometers;

[0025] And / or,

[0026] Within the same pixel region, the height of the lowest partition is 0.2 - 0.6 micrometers.

[0027] Optionally, in the first direction, from the middle of the same column of pixel regions to both sides, the spacing between adjacent partitions gradually decreases.

[0028] Optionally, in the first direction, from the middle of the same column of pixel regions to both sides, the spacing between adjacent partitions decreases arithmetically.

[0029] Optionally, in the first direction, in the same column of pixel regions, the average value of the distances between two adjacent partition plates is 1 1 0 to 5 1 .

[0030] Optionally, the partition plate is a lyophilic partition plate, and / or the shape of the cross-section of the partition plate parallel to the first direction is a rectangle, a trapezoid, a triangle or an irregular polygon.

[0031] The present invention also provides a method for manufacturing an array substrate, including:

[0032] Preparing a plurality of first pixel defining layers arranged along a first direction and extending along a second direction on a substrate;

[0033] Preparing a partition plate assembly between two adjacent first pixel defining layers on the substrate;

[0034] Preparing a plurality of second pixel defining layers arranged along the second direction and extending along the first direction on the substrate, wherein the first direction intersects the second direction, and the plurality of first pixel defining layers and the plurality of second pixel defining layers jointly define a plurality of pixel regions arranged in an array; wherein, the first pixel defining layer is used to separate two adjacent columns of the pixel regions in the first direction, and the height of the second pixel defining layer is lower than the height of the first pixel defining layer; the partition plates in each partition plate assembly all extend along the second direction, and the height of each partition plate is used to cooperate with the properties of the first pixel defining layer so that pixel ink can be uniformly filled between two adjacent first pixel defining layers corresponding thereto.

[0035] By using the method for manufacturing an array substrate provided by the present invention, the above-mentioned array substrate can be prepared, and the problem of poor luminous uniformity of the OLED display device along the row direction of the pixel regions can be improved.

[0036] The present invention also provides a display device, including any one of the array substrates provided in the above technical solutions.

[0037] The display device provided by the present invention includes the above-mentioned array substrate, and thus can at least achieve the technical effects that the above-mentioned array substrate can achieve, that is, improving the problem of poor luminous uniformity of the OLED display device along the row direction of the pixel regions. Description of the Drawings

[0038] Figure 1 It is a front view of the array substrate provided by an embodiment of the present invention;

[0039] Figure 2In the prior art, when the pixel definition layer extending in the column direction is a lyophilic pixel definition layer, it is a schematic structural diagram of an array substrate;

[0040] Figure 3 In the prior art, when the pixel definition layer extending in the column direction is a lyophobic pixel definition layer, it is a schematic structural diagram of an array substrate;

[0041] Figure 4 In the array substrate provided by the embodiment of the present invention, when the first pixel definition layer is a lyophilic pixel definition layer, Figure 1 it is a cross-sectional view taken along line A-A in;

[0042] Figure 5 In the array substrate provided by the embodiment of the present invention, when the first pixel definition layer is a lyophilic pixel definition layer, Figure 1 it is a cross-sectional view taken along line B-B in;

[0043] Figure 6 In the array substrate provided by the embodiment of the present invention, when the first pixel definition layer is a lyophobic pixel definition layer, Figure 1 it is a cross-sectional view taken along line A-A in;

[0044] Figure 7 In the array substrate provided by the embodiment of the present invention, when the first pixel definition layer is a lyophobic pixel definition layer, Figure 1 it is a cross-sectional view taken along line B-B in;

[0045] Figure 8 It is a schematic partial structure diagram of another array substrate provided by the embodiment of the present invention;

[0046] Figure 9 It is a schematic partial structure diagram of another array substrate provided by the embodiment of the present invention;

[0047] Figure 10 It is a schematic partial structure diagram of another array substrate provided by the embodiment of the present invention.

[0048] Reference numerals: 1 - substrate; 2 - first pixel definition layer; 3 - second pixel definition layer; 4 - pixel region; 5 - partition; 100 - pixel definition layer extending in the column direction; 200 - light-emitting sub-pixel. Detailed Embodiments

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

[0050] As Figure 1As shown, an array substrate provided in this embodiment includes:

[0051] A substrate 1;

[0052] A plurality of first pixel definition layers 2 arranged along a first direction on the substrate 1 and a plurality of second pixel definition layers 3 arranged along a second direction on the substrate 1. The first pixel definition layers 2 extend along the second direction, and the second pixel definition layers 3 extend along the first direction. The first direction intersects the second direction. The plurality of first pixel definition layers 2 and the plurality of second pixel definition layers 3 jointly define a plurality of pixel regions 4 arranged in an array. Among them, the first pixel definition layers 2 are used to separate two adjacent columns of pixel regions 4 in the first direction, and the height of the second pixel definition layers 3 is lower than the height of the first pixel definition layers 2;

[0053] A partition component disposed on the substrate 1 and corresponding to each column of pixel regions 4 one by one. The partitions 5 in each partition component all extend along the second direction, and the height of each partition 5 is used to cooperate with the property of the first pixel definition layer 2 so that the pixel ink can be evenly filled between the corresponding adjacent two first pixel definition layers 2.

[0054] Taking the arrangement direction of the same-color light-emitting sub-pixels 200 as the column direction and the arrangement direction of different-color light-emitting sub-pixels 200 as the row direction, in the prior art, there are two reasons for the poor row-direction light emission uniformity after pixel film formation. One is that the pixel definition layer 100 extending along the column direction is a liquid-loving pixel definition layer, and the pixel ink climbs the pixel definition layer, making the film thickness of some pixel ink near the pixel definition layer greater than that of other parts (as Figure 2 shown), resulting in uneven pixel ink film thickness or non-light emission; the other is that the pixel definition layer 100 extending along the column direction is a liquid-repellent pixel definition layer, resulting in the film thickness of some pixel ink near the pixel definition layer being smaller than that of other parts (as Figure 3 shown), resulting in uneven pixel ink film thickness or leakage.

[0055] In the array substrate provided in this embodiment, a plurality of first pixel definition layers 2 arranged along the first direction and extending along the second direction and a plurality of second pixel definition layers 3 arranged along the second direction and extending along the first direction are provided on the substrate 1. A plurality of pixel regions 4 arranged in an array are jointly defined by the plurality of first pixel definition layers 2 and the plurality of second pixel definition layers 3; a partition component corresponding to each column of pixel regions 4 one by one (that is, a partition component is provided between every two adjacent first pixel definition layers 2) is also provided on the substrate 1, and the partition component extends along the second direction. The height of the partition 5 in the partition component can cooperate with the property of the first pixel definition layer 2, so that the pixel ink can be evenly filled between the corresponding adjacent two first pixel definition layers 2, improving the problem of poor light emission uniformity of the OLED display device along the row direction of the pixel regions 4.

[0056] When specifically setting the above-mentioned first pixel defining layer 2, the first pixel defining layer 2 can be a lyophilic pixel defining layer; when specifically setting the above-mentioned partition component, as Figure 4 and Figure 5 shown, the partitions in the partition component can be divided into multiple partition groups arranged at intervals in the first direction, and within the pixel region 4, in the first direction, the heights of the partition groups gradually decrease from the middle to both sides.

[0057] In the first direction, the heights of the partition groups gradually decrease from the middle to both sides. The lower partition groups will lower the height of the pixel ink near the first pixel defining layer 2. Considering that the climbing amplitude of the pixel ink on the first pixel defining layer 2 is relatively large, in this embodiment, the multiple partition groups with gradually decreasing heights from the middle to both sides in the first direction are used to gradually lower the height of the pixel ink climbing the first pixel defining layer 2. At the same time, the middle partition group will raise the pixel ink with a relatively low height in the middle, thereby improving the uniformity of the pixel ink film thickness in the first direction and making the light emission uniformity of the OLED display device better along the row direction of the pixel region 4.

[0058] When specifically setting the above-mentioned partition group, each partition group can include a partition 5; in order to increase the density of the partitions and make the uniformity of the pixel ink film thickness in the first direction within the pixel region 4 better, the partition group can also include at least two partitions 5 arranged at intervals in the first direction.

[0059] When the partition group includes at least two partitions 5 arranged at intervals in the first direction, the height of the partition 5 closer to the middle of the pixel region 4 in the same partition group can be equal to the height of the partition away from the middle of the pixel region 4. In order to further improve the uniformity of the pixel ink film thickness in the first direction within the pixel region 4, the height of the partition closer to the middle of the pixel region 4 in the same partition group is preferably greater than the height of the partition 5 away from the middle of the pixel region 4.

[0060] In order to simplify the manufacturing process and further improve the uniformity of the pixel ink film thickness in the first direction, in an alternative implementation, within the same pixel region, in the first direction, the heights of the partition groups gradually decrease arithmetically from the middle to both sides.

[0061] In an alternative implementation, as Figure 6 and Figure 7 shown, the first pixel defining layer 2 can also be a lyophobic pixel defining layer; the partitions in the partition component are divided into multiple partition groups arranged at intervals in the first direction, and within the pixel region 4, in the first direction, the heights of the partition groups gradually increase from the middle to both sides.

[0062] In the first direction, the height of each partition group gradually increases from the middle to both sides. The higher partition group will raise the height of the pixel ink near the first pixel definition layer 2. Considering that the film thickness amplitude of the pixel ink near the first pixel definition layer 2 decreases significantly, in this embodiment, in the first direction, the height of the pixel ink is gradually raised by multiple partition groups with gradually increasing height from the middle to both sides. At the same time, the middle partition group will lower the height of the pixel ink in the middle which would originally be higher, thereby improving the uniformity of the film thickness of the pixel ink in the first direction and making the light emission uniformity of the OLED display device better along the row direction of the pixel region 4.

[0063] When specifically setting the above partition groups, each partition group includes a partition 5; in order to increase the density of the partitions and make the uniformity of the film thickness of the pixel ink in the first direction within the pixel region 4 better, the partition group can also include at least two partitions 5 arranged at intervals in the first direction.

[0064] When the partition group includes at least two partitions 5 arranged at intervals in the first direction, the height of the partition 5 in the first direction near the middle of the pixel region 4 in the same partition group can be equal to the height of the partition away from the middle of the pixel region 4; in order to further improve the uniformity of the film thickness of the pixel ink in the first direction within the pixel region 4, the height of the partition near the middle of the pixel region 4 in the same partition group is preferably less than the height of the partition away from the middle of the pixel region 4.

[0065] In order to simplify the manufacturing process and further improve the uniformity of the film thickness of the pixel ink in the first direction, in an optional implementation manner, within the same pixel region, in the first direction, the height of each partition group increases arithmetically from the middle to both sides.

[0066] Based on the above embodiments, in an optional implementation manner, within the same pixel region, the height of the highest partition is 0.6 - 1.5 microns, and the height of the lowest partition is 0.2 - 0.6 microns.

[0067] Based on the above embodiments, in an optional implementation manner, in the first direction, from the middle to both sides of the same column of pixel regions, the distance between adjacent partitions decreases in sequence.

[0068] When the first pixel definition layer is a hydrophobic pixel definition layer, in the first direction, the height of the pixel ink at both sides within the pixel region 4 decreases more severely. When the first pixel definition layer is a hydrophilic pixel definition layer, in the first direction, the climbing of the pixel ink at both sides within the pixel region 4 is more severe. In the first direction, from the middle to both sides, the distance between adjacent partitions 5 decreases in sequence, which can better ensure the uniformity of the film thickness of the pixel ink.

[0069] In order to further improve the uniformity of the pixel ink film thickness in the first direction, in an alternative implementation, in the first direction, from the middle of the same column of pixel regions to both sides, the distance between adjacent two partition plates decreases arithmetically.

[0070] Optionally, in the first direction, in the same column of pixel regions, the average value of the distance between adjacent two partition plates is 1 1 0 to 5 1 .

[0071] When specifically setting the above-mentioned partition plate 5, the partition plate 5 can be a liquid-friendly partition plate, and the shape of the cross-section of the partition plate 5 parallel to the first direction can be a rectangle, a trapezoid, a triangle or an irregular polygon.

[0072] It should be noted that in this embodiment, the pixel region 4 can be Figure 1 the rectangle shown in Figure 8 , or other shapes, such as: a circle (as shown in Figure 9 ), a hexagon (as shown in Figure 10 ) or an ellipse (as shown in

[0073] A method for manufacturing an array substrate provided in this embodiment includes:

[0074] Step S1, preparing a plurality of first pixel defining layers 2 arranged along the first direction and extending along the second direction on the substrate 1;

[0075] Step S2, preparing a partition plate assembly between two adjacent first pixel defining layers 2 on the substrate 1;

[0076] Step S3, preparing a plurality of second pixel defining layers 3 arranged along the second direction and extending along the first direction on the substrate 1, wherein the first direction intersects the second direction, and the plurality of first pixel defining layers 2 and the plurality of second pixel defining layers 3 jointly define a plurality of pixel regions 4 arranged in an array; wherein, the first pixel defining layer 2 is used to separate two adjacent columns of pixel regions 4 in the first direction, and the height of the second pixel defining layer 3 is lower than the height of the first pixel defining layer 2; the partition plates in each partition plate assembly all extend along the second direction, and the height of each partition plate is used to cooperate with the property of the first pixel defining layer 2 so that the pixel ink can be uniformly filled between the corresponding two adjacent first pixel defining layers 2;

[0077] Step S4, spraying pixel ink in each pixel region 4.

[0078] Using the method for manufacturing an array substrate provided in this embodiment can manufacture the above-mentioned array substrate, and can improve the problem of poor luminous uniformity of the OLED display device along the row direction of the pixel region 4.

[0079] In an alternative implementation, the manufacturing method of the array substrate may include the following steps:

[0080] Step S01: Prepare a first electrode layer on the substrate 1.

[0081] Specifically, the first electrode layer may be prepared on the planarization layer of the substrate 1, and the first electrode layer may be an anode layer.

[0082] Step S02: Prepare a light-emitting layer on the first electrode layer.

[0083] Step S03: Prepare a second electrode layer on the light-emitting layer, where the second electrode layer may be a cathode layer.

[0084] A bottom-emitting device structure can be formed by setting a transparent anode layer and a reflective cathode layer, or a top-emitting device structure can be formed by setting a transparent cathode layer and a reflective anode layer. Depending on the device structure, the choice of anode material is also different, and it is usually a high-work-function transparent or semi-transparent material such as ITO, Ag, NiO, Al, graphene, etc.

[0085] Step S05: Prepare a first film layer for forming a first pixel defining layer on the first electrode layer, set a photoresist layer on the first film layer, and prepare the first pixel defining layer through exposure, development, and etching.

[0086] The common film-forming methods for the first film layer are spin coating or slit coating. The height of the prepared first pixel defining layer can be 0.1 um - 100 um, preferably 1 um - 5 um.

[0087] Step S06: Prepare a spacer film layer for forming a spacer assembly on the first electrode layer, set a photoresist layer on the spacer film layer, select a half-tone mask for masking, expose, and then develop and etch to prepare the spacer assembly.

[0088] Step S07: Prepare a second film layer for forming a second pixel defining layer on the first electrode layer, set a photoresist layer on the second film layer, and prepare the second pixel defining layer through exposure, development, and etching. At the same time, the pixel regions 4 arranged in an array are formed.

[0089] Step S08: Spray pixel ink into each pixel region 4.

[0090] A display device provided in this embodiment includes the array substrate described above.

[0091] The display device provided in this embodiment includes the above-mentioned array substrate, and thus can at least achieve the technical effects that the above-mentioned array substrate can achieve, that is, to improve the problem of poor emission uniformity of the OLED display device along the row direction of the pixel region 4.

[0092] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

Claims

1. An array substrate, characterized in that, Comprising: a substrate; a plurality of first pixel defining layers arranged on the substrate in a first direction and a plurality of second pixel defining layers arranged on the substrate in a second direction, the first pixel defining layers extending in the second direction, the second pixel defining layers extending in the first direction, the first direction intersecting the second direction, and the plurality of first pixel defining layers and the plurality of second pixel defining layers jointly defining a plurality of pixel regions arranged in an array; wherein, the first pixel defining layers are used to separate two adjacent columns of pixel regions in the first direction, and the height of the second pixel defining layers is lower than the height of the first pixel defining layers; a partition component disposed on the substrate and corresponding to each column of the pixel regions one by one, the partitions in each partition component all extending in the second direction, and the height of each partition is used to cooperate with the property of the first pixel defining layer so that pixel ink can be uniformly filled between two adjacent first pixel defining layers corresponding thereto; Wherein, when the first pixel defining layer is a liquid-loving pixel defining layer, the partitions in the partition component are divided into a plurality of partition groups spaced apart in the first direction, and within the pixel region, in the first direction, the heights of the partition groups gradually decrease from the middle to both sides; when the first pixel defining layer is a liquid-repellent pixel defining layer, the partitions in the partition component are divided into a plurality of partition groups spaced apart in the first direction, and within the pixel region, in the first direction, the heights of the partition groups gradually increase from the middle of the same column of pixel regions to both sides.

2. The array substrate according to claim 1, wherein Each partition group includes one partition.

3. The array substrate according to claim 1, wherein When the first pixel defining layer is a liquid-loving pixel defining layer, each partition group includes at least two partitions spaced apart in the first direction, and within the same pixel region, the height of the partition closer to the middle of the pixel region is greater than or equal to the height of the partition farther from the middle of the pixel region.

4. The array substrate according to claim 1, wherein, When the first pixel defining layer is a liquid-loving pixel defining layer, within the same pixel region, in the first direction, the heights of the partition groups gradually decrease arithmetically from the middle to both sides.

5. The array substrate according to claim 1, characterized in that, When the first pixel defining layer is a liquid-repellent pixel defining layer, each partition group includes at least two partitions arranged at intervals, and within the same pixel region, in the first direction, the height of the partition closer to the middle of the pixel region is less than or equal to the height of the partition farther from the middle of the pixel region in the first direction.

6. The array substrate according to claim 1, wherein When the first pixel defining layer is a liquid-repellent pixel defining layer, within the same pixel region, in the first direction, the heights of the partition groups gradually increase arithmetically from the middle to both sides.

7. The array substrate according to claim 1, wherein Within the same pixel region, the height of the highest partition is 0.6 - 1.5 micrometers; and / or Within the same pixel region, the height of the lowest partition is 0.2 - 0.6 micrometers.

8. The array substrate according to claim 1, wherein In the first direction, from the middle of the same column of pixel regions to both sides, the distance between two adjacent partitions decreases in sequence.

9. The array substrate according to claim 8, wherein, In the first direction, from the middle of the same column of pixel regions to both sides, the distance between two adjacent partitions decreases arithmetically.

10. The array substrate according to claim 9, wherein In the first direction, in the same column of pixel regions, the average value of the spacing between two adjacent partitions is to 11. The array substrate according to any one of claims 1-6, characterized in that, The partition is a liquidophilic partition, and / or the shape of the cross-section of the partition parallel to the first direction is a rectangle, a trapezoid, a triangle, or an irregular polygon.

12. A manufacturing method of an array substrate, characterized in that Comprising: Preparing a plurality of first pixel definition layers arranged along a first direction and extending along a second direction on a substrate; Preparing a partition assembly between two adjacent first pixel definition layers on the substrate; Preparing a plurality of second pixel definition layers arranged along the second direction and extending along the first direction on the substrate, wherein the first direction intersects the second direction, and the plurality of first pixel definition layers and the plurality of second pixel definition layers jointly define a plurality of pixel regions arranged in an array; wherein the first pixel definition layer is used to separate two adjacent columns of the pixel regions in the first direction, and the height of the second pixel definition layer is lower than the height of the first pixel definition layer; the partitions in each partition assembly all extend along the second direction, and the height of each partition is used to cooperate with the property of the first pixel definition layer so that the pixel ink can be uniformly filled between two adjacent first pixel definition layers corresponding thereto; Wherein, when the first pixel definition layer is a liquidophilic pixel definition layer, the partitions in the partition assembly are divided into a plurality of partition groups arranged at intervals along the first direction, and within the pixel region, in the first direction, the height of each partition group gradually decreases from the middle to both sides; when the first pixel definition layer is a liquidophobic pixel definition layer, the partitions in the partition assembly are divided into a plurality of partition groups arranged at intervals along the first direction, and within the pixel region, in the first direction, the height of each partition group gradually increases from the middle of the same column of pixel regions to both sides.

13. A display device, characterized in that, Comprising: The array substrate according to any one of claims 1-11.

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