Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises: a base substrate, and sub-pixels and a first metal layer that are located on the base substrate. The sub-pixels include a first-color sub-pixel, and the first metal layer comprises data lines, the data lines being arranged in a first direction. A light-emitting region of the first-color sub-pixel comprises a first edge extending in the first direction and a second edge extending in a second direction, the length of the first edge being greater than the length of the second edge. The first metal layer further comprises a metal pad layer located between adjacent data lines, wherein in a direction perpendicular to the base substrate, the metal pad layer comprises a first overlapping portion which overlaps with a light-emitting region of a sub-pixel, the first overlapping portion is of a continuous structure, the first overlapping portion is symmetrically arranged with respect to a first center line of the light-emitting region of the sub-pixel which extends in the second direction, and the area of the first overlapping portion accounts for 60% or more of the area of the light-emitting region; and the metal pad layer is configured to transmit a power signal. The display substrate provided in the present disclosure can ameliorate color shift, thereby improving the display quality.

Description

Display substrate and display device Technical Field

[0001] Embodiments of the present disclosure relate to a display substrate and a display device. Background Art

[0002] With the development of organic light-emitting diode display technology, people have higher and higher requirements for display effects. The design of pixel circuits in display devices has a very important impact on display characteristics. For example, pixel circuit design has a significant impact on characteristics such as color deviation of display devices.

[0003] Summary of the Invention

[0004] Embodiments of the present disclosure provide a display substrate and a display device.

[0005] An embodiment of the present disclosure provides a display substrate, comprising: a base substrate, and a plurality of sub-pixels and a first metal layer located on the base substrate. The plurality of sub-pixels include at least first color sub-pixels; the first metal layer includes a plurality of data lines, the plurality of data lines being arranged along a first direction. The light-emitting area of ​​the first color sub-pixel includes a first side extending along the first direction and a second side extending along a second direction, the length of the first side being greater than the length of the second side, and the first direction intersects the second direction; the first metal layer also includes a metal pad layer located at least between adjacent data lines, the metal pad layer including a first overlapping portion that overlaps with the light-emitting area of ​​at least one sub-pixel in a direction perpendicular to the base substrate, the first overlapping portion being a continuous structure, symmetrically distributed relative to a first center line of the light-emitting area of ​​the at least one sub-pixel extending along the second direction, and an area of ​​the first overlapping portion accounting for more than 60% of the area of ​​the light-emitting area; the metal pad layer is configured to transmit a power signal.

[0006] For example, according to an embodiment of the present disclosure, the first overlapping portion is symmetrically distributed relative to a second center line of the light-emitting area of ​​the at least one sub-pixel extending along the first direction.

[0007] For example, according to an embodiment of the present disclosure, the length of the first side is greater than the maximum dimension of the metal pad in the first direction, and in a direction perpendicular to the base substrate, the light-emitting area of ​​the same first color sub-pixel overlaps with a metal pad and two data lines, and the two parts where the two data lines overlap with the light-emitting area of ​​the same first color sub-pixel are symmetrically distributed relative to the first center line.

[0008] For example, according to an embodiment of the present disclosure, the plurality of sub-pixels further include a second color sub-pixel, and the area of ​​the first overlapping portion accounts for more than 90% of the area of ​​the light-emitting region of the second color sub-pixel overlapping therewith.

[0009] For example, according to an embodiment of the present disclosure, the multiple sub-pixels also include a third color sub-pixel, the area of ​​the first overlapping portion accounts for more than 90% of the area of ​​the light-emitting area of ​​the third color sub-pixel overlapping with it; the area of ​​the first overlapping portion is smaller than the area of ​​the light-emitting area of ​​the first color sub-pixel overlapping with it; the first color sub-pixel is a blue sub-pixel, one of the second color sub-pixel and the third color sub-pixel is a red sub-pixel, and the other is a green sub-pixel.

[0010] For example, according to an embodiment of the present disclosure, the multiple sub-pixels include multiple sub-pixel columns arranged along the first direction, the multiple sub-pixel columns include multiple first sub-pixel columns and multiple second sub-pixel columns, and two first sub-pixel columns are arranged between two adjacent second sub-pixel columns; the first sub-pixel column includes multiple second color sub-pixels and multiple third color sub-pixels arranged along the second direction, and the second sub-pixel column includes multiple first color sub-pixels arranged along the second direction.

[0011] For example, according to an embodiment of the present disclosure, the multiple second color sub-pixels and the multiple third color sub-pixels are alternately arranged along the second direction, and the two first sub-pixel columns are two adjacent first sub-pixel columns, and the two sub-pixels arranged along the first direction in the two adjacent first sub-pixel columns are sub-pixels of the same color.

[0012] For example, according to an embodiment of the present disclosure, in the same first sub-pixel column, two second-color sub-pixels constitute a first sub-pixel pair, and two third-color sub-pixels constitute a second sub-pixel pair, the first sub-pixel pair and the second sub-pixel pair are alternately arranged along the second direction, and the two first sub-pixel columns are two adjacent first sub-pixel columns, and the two sub-pixels arranged along the first direction in the two adjacent first sub-pixel columns are sub-pixels of the same color.

[0013] For example, according to an embodiment of the present disclosure, the multiple sub-pixels include a plurality of sub-pixel columns arranged along the first direction, the multiple sub-pixel columns include a third sub-pixel column, a fourth sub-pixel column and a fifth sub-pixel column arranged sequentially and repeatedly, the third sub-pixel column includes the second color sub-pixels and the third color sub-pixels arranged alternately along the second direction, the fourth sub-pixel column includes the first color sub-pixels and the second color sub-pixels arranged alternately along the second direction, and the fifth sub-pixel column includes the first color sub-pixels and the third color sub-pixels arranged alternately along the second direction.

[0014] For example, according to an embodiment of the present disclosure, the orthographic projection of the light-emitting area of ​​the first color sub-pixel on the straight line extending along the second direction is a first orthographic projection, the orthographic projection of the light-emitting area of ​​the second color sub-pixel on the straight line is a second orthographic projection, and the orthographic projection of the light-emitting area of ​​the third color sub-pixel on the straight line is a third orthographic projection, and the same first orthographic projection only overlaps with one of the second orthographic projection and the third orthographic projection arranged along the second direction.

[0015] For example, according to an embodiment of the present disclosure, the length of the side of the light-emitting area of ​​the second color sub-pixel extending along the first direction and the length of the side of the light-emitting area of ​​the third color sub-pixel extending along the first direction are both smaller than the length of the first side of the first color sub-pixel.

[0016] For example, according to an embodiment of the present disclosure, the display substrate further includes: a second metal layer located between the first metal layer and the base substrate; and an insulating layer located between the first metal layer and the second metal layer. The metal pad layer includes a first signal line, and the second metal layer includes a plurality of second signal lines. The plurality of second signal lines are arranged along the second direction, and the second signal lines are electrically connected to the first signal lines through first vias in the insulating layer. The orthographic projection of the first via on the base substrate does not overlap with the orthographic projection of the light-emitting area of ​​any sub-pixel on the base substrate.

[0017] For example, according to an embodiment of the present disclosure, the second metal layer includes a second overlapping portion overlapping with the light-emitting area of ​​the at least one sub-pixel, and the second overlapping portion is symmetrically distributed with respect to the first center line.

[0018] For example, according to an embodiment of the present disclosure, each of the sub-pixels includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence along a direction perpendicular to the base substrate, and the first electrode is located between the light-emitting functional layer and the base substrate; the metal pad layer extends along the second direction, and the metal pad layer includes a plurality of hollow portions, and the two parts of the metal pad layer located on both sides of the same hollow portion in the second direction are connected to each other; along the direction perpendicular to the base substrate, the part of the first electrode that does not overlap with the light-emitting area overlaps with the hollow portion.

[0019] For example, according to an embodiment of the present disclosure, the multiple sub-pixels include multiple sub-pixel columns arranged along the first direction, each sub-pixel column includes sub-pixels arranged along the second direction, and along a direction perpendicular to the substrate, the first electrodes of two adjacent sub-pixels arranged along the second direction overlap with the same hollow portion.

[0020] For example, according to an embodiment of the present disclosure, the sub-pixel also includes a pixel circuit, which includes a light-emitting control transistor located between the first electrode of the sub-pixel and the base substrate, and the first metal layer also includes a first connecting portion located in the hollow portion, and the first electrode of the sub-pixel is electrically connected to the light-emitting control transistor through the first connecting portion.

[0021] For example, according to an embodiment of the present disclosure, the multiple data lines include a first data line electrically connected to the first color sub-pixel, a second data line electrically connected to the second color sub-pixel, and a third data line electrically connected to the third color sub-pixel. The multiple data lines include a plurality of data line groups arranged along the first direction, and each data line group includes the second data line, the third data line, the first data line, the first data line, the second data line, and the third data line arranged in sequence along the first direction.

[0022] For example, according to an embodiment of the present disclosure, the multiple data lines include a first data line electrically connected to the first color sub-pixel, a second data line electrically connected to the second color sub-pixel, and a third data line electrically connected to the third color sub-pixel. The multiple data lines include a plurality of data line groups arranged along the first direction, and each data line group includes the second data line, the third data line, the first data line, the second data line, the third data line, and the first data line arranged in sequence along the first direction.

[0023] For example, according to an embodiment of the present disclosure, the second metal layer also includes a plurality of second connection parts, the data line includes a plurality of protrusions, and the protrusions are electrically connected to the second connection parts through second vias in the insulating layer; the edge of the metal pad layer extending along the second direction includes a notch, and the protrusions are arranged opposite to the notch.

[0024] For example, according to an embodiment of the present disclosure, the metal pad layer includes multiple hollow portions, and two parts of the metal pad layer located on both sides of the same hollow portion in the second direction are connected to each other; a straight line extending along the first direction and passing through the hollow portion does not pass through the notch.

[0025] For example, according to an embodiment of the present disclosure, the ratio of the widths of the same metal pad layer at other locations except the hollow portion and the notch is 0.9 to 1.1.

[0026] For example, according to an embodiment of the present disclosure, a straight line passing through the edge of the hollow portion and extending along the second direction does not pass through the notch.

[0027] For example, according to an embodiment of the present disclosure, two first connection portions are provided in the same hollow portion, and the two first connection portions are symmetrically distributed relative to a center line of the metal pad layer extending along the second direction.

[0028] An embodiment of the present disclosure provides a display device, comprising any of the above-mentioned display substrates. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.

[0030] FIG. 1A is a stacked diagram of a pixel circuit layout and a first electrode of a sub-pixel of a display substrate.

[0031] 1B to 1D are schematic diagrams of partial cross-sectional structures taken along line AA′, line BB′, and line CC′ shown in FIG. 1A , respectively.

[0032] FIG2A is a pixel circuit layout of a display substrate and a first electrode stack diagram of a sub-pixel provided according to an example of an embodiment of the present disclosure.

[0033] FIG. 2B is a stacking diagram of the first metal layer and the first electrode of the sub-pixel in the display substrate shown in FIG. 2A .

[0034] FIG. 2C is a stacking diagram of a first metal layer, a second metal layer, and a first electrode of a sub-pixel in the display substrate shown in FIG. 2A .

[0035] FIG2D is a schematic diagram of a partial cross-sectional structure taken along line D1 - D1 ′ shown in FIG2A .

[0036] FIG2E is a schematic diagram of a partial cross-sectional structure taken along line E1 - E1 ′ shown in FIG2A .

[0037] FIG2F is a schematic diagram of a partial cross-sectional structure taken along line F1 - F1 ′ shown in FIG2A .

[0038] FIG2G is a schematic diagram of a partial cross-sectional structure taken along line D2 - D2 ′ shown in FIG2A .

[0039] FIG2H is a schematic diagram of a partial cross-sectional structure taken along line E2 - E2 ′ shown in FIG2A .

[0040] FIG2I is a schematic diagram of a partial cross-sectional structure taken along line F2 - F2 ′ shown in FIG2A .

[0041] FIG. 3 is a schematic diagram illustrating an arrangement of multiple sub-pixels of the display substrate shown in FIG. 2A .

[0042] FIG4 is a schematic diagram of a partial planar structure of a display substrate provided according to another example of an embodiment of the present disclosure.

[0043] FIG. 5 is a schematic diagram illustrating sub-pixel distribution in the display substrate shown in FIG. 4 .

[0044] FIG. 6 is a mask for forming the light-emitting layer of the display substrate shown in FIG. 5 .

[0045] FIG7 is a schematic diagram of a partial planar structure of a display substrate provided according to another example of an embodiment of the present disclosure.

[0046] FIG. 8 is a mask for forming the light-emitting layer of the display substrate shown in FIG. 7 .

[0047] FIG. 9 is an equivalent circuit diagram of a pixel circuit included in the display substrate shown in FIG. 2A to FIG. 6 .

[0048] 10A to 10G are schematic diagrams showing different film layers in a substrate.

[0049] FIG. 11 is an equivalent circuit diagram of a pixel circuit included in the display substrate shown in FIG. 7 .

[0050] 12 and 13 are schematic diagrams showing two film layers in a substrate.

[0051] FIG14 is a schematic block diagram of a display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0052] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0053] Unless otherwise defined, technical or scientific terms used in this disclosure should have the ordinary meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are simply used to distinguish different components. The words "include" or "comprising" and similar terms mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0054] The features such as “parallel”, “perpendicular” and “same” used in the embodiments of the present disclosure include the features such as “parallel”, “perpendicular” and “same” in the strict sense, as well as the cases where “approximately parallel”, “approximately perpendicular” and “approximately the same” contain certain errors, taking into account the errors associated with the measurement and the measurement of specific quantities (for example, the limitations of the measurement system), and are expressed as being within the acceptable deviation range for a specific value determined by a person of ordinary skill in the art. For example, “approximately” can mean within one or more standard deviations, or within 10% or 5% of the value. When the number of a component is not specifically indicated below in the embodiments of the present disclosure, it means that the component can be one or more, or can be understood as at least one. “At least one” refers to one or more, and “a plurality” refers to at least two.

[0055] Figure 1A is a stacked diagram of a pixel circuit layout and a first electrode of a sub-pixel of a display substrate. Figures 1B to 1D are partial cross-sectional structural diagrams taken along lines AA', BB', and CC' of Figure 1A, respectively.

[0056] As shown in Figures 1A to 1D, the display substrate includes a red sub-pixel 91, a green sub-pixel 92, and a blue sub-pixel 93. Each color sub-pixel includes a first electrode 910, a light-emitting functional layer, and a second electrode that are stacked. For example, the first electrode 910 can be an anode. The first electrode 910 is located between the light-emitting functional layer and the base substrate 900. Figures 1A to 1D schematically illustrate the first electrode 910, without showing the light-emitting functional layer and the second electrode. The second electrode is located on the side of the light-emitting functional layer away from the first electrode. Multiple metal layers, such as metal layer 921 and metal layer 922, are provided between the first electrode 910 and the base substrate 900. Metal layer 921 is the metal layer closest to the first electrode 910. Metal layer 922 is located between metal layer 921 and the base substrate 900. Both metal layer 921 and metal layer 922 include portions that overlap with the first electrode 910. Such overlapping portions may affect the flatness of the first electrode. A flat layer 903 is provided between the metal layer 921 and the first electrode 910 , an insulating layer 920 is provided between the metal layer 921 and the base substrate 900 , and other film layers 901 are provided. The above-mentioned other film layers may include semiconductor layers, multi-layer metal layers, insulating layers and other film layers.

[0057] During research, the inventors of this application discovered that, as shown in Figures 1A to 1D , on the one hand, the overlapping portions of the metal layer 921, the pixel-defining pattern 930, and the opening 931 of the three different color sub-pixels are asymmetrically distributed relative to the centerline of the opening 931 extending in the Y direction. Consequently, the portion of the first electrode 910 exposed by the opening 931 of the pixel-defining pattern 930 is uneven, and the portion of the first electrode 910 elevated by at least one of the metal layer 921 and the metal layer 922 is asymmetrical, resulting in color shift on the display substrate. On the other hand, the metal layer 921 is electrically connected to the metal layer 922 via a via 940 in the insulating layer 902 located between the metal layers 921 and 922. This via 940 overlaps the opening 931 in a direction perpendicular to the base substrate 900, further severely affecting the flatness of the first electrode 910 and causing severe color shift. For example, the thickness of the planar layer 903 may be 2 microns, the flatness of the first electrode 910 of the red sub-pixel 91 is 34.62%, the flatness of the first electrode 910 of the green sub-pixel 92 is 30.77%, and the flatness of the first electrode 910 of the blue sub-pixel 93 is 38.46%.

[0058] Furthermore, the inventors of the present application discovered that, in the display substrate shown in FIG1A to FIG1D , the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the red sub-pixel 91 was 1.475 microns, the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the green sub-pixel 02 was 1.775 microns, and the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the blue sub-pixel 03 was 1.1 microns. By moving the metal layer 921 horizontally, for example, by 3.3 microns in the direction opposite to the X-direction arrow, the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the red sub-pixel 91 was reduced to 1.475 microns, the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the green sub-pixel 02 was reduced to 1.875 microns, and the height difference of the uneven portion of the first electrode 910 exposed by the opening 931 in the blue sub-pixel 03 was reduced to 1.575 microns. This shows that the flatness of the first electrode 910 in the green sub-pixel 02 and the blue sub-pixel 03 has deteriorated, while the symmetry of the portion of the metal layer 921 exposed by the openings 931 relative to the centerline extending in the Y direction of each opening 931 has not changed significantly. Therefore, simply moving the position of the first electrode and / or the metal layer 921 does not improve the symmetry of the metal layer 921. The via 940 still overlaps the opening 931, and the flatness of the first electrode cannot be improved, resulting in no improvement in the color shift.

[0059] The embodiments of the present disclosure provide a display substrate and a display device. The display substrate includes: a base substrate, a plurality of sub-pixels located on the base substrate, and a first metal layer. The plurality of sub-pixels include at least a first color sub-pixel; the first metal layer includes a plurality of data lines, and the plurality of data lines are arranged along a first direction. The light-emitting area of ​​the first color sub-pixel includes a first side extending along a first direction and a second side extending along a second direction, the length of the first side is greater than the length of the second side, and the first direction intersects with the second direction; the first metal layer also includes a metal pad layer located at least between adjacent data lines, and in a direction perpendicular to the base substrate, the metal pad layer includes a first overlapping portion that overlaps with the light-emitting area of ​​at least one sub-pixel, the first overlapping portion is a continuous structure, and the first overlapping portion is symmetrically distributed relative to the first center line of the light-emitting area of ​​at least one sub-pixel extending along the second direction, and the area of ​​the first overlapping portion accounts for more than 60% of the area of ​​the light-emitting area; the metal pad layer is configured to transmit a power signal.

[0060] The display substrate provided by the present disclosure can improve color deviation and enhance the display quality of a display device including the display substrate by setting the first side with a longer length in the light-emitting area of ​​the first color sub-pixel to intersect with the extension direction of the data line, while setting the overlapping area of ​​the metal pad configured to transmit the power signal and the light-emitting area of ​​at least one sub-pixel to account for more than 60% of the area of ​​the light-emitting area.

[0061] The display substrate and the display device provided by the embodiments of the present disclosure are described below with reference to the accompanying drawings.

[0062] Figure 2A is a pixel circuit layout and a stack diagram of the first electrode of a sub-pixel provided in accordance with an example of an embodiment of the present disclosure. Figure 2B is a stack diagram of the first metal layer in the display substrate shown in Figure 2A and the first electrode of the sub-pixel. Figure 2C is a stack diagram of the first metal layer, the second metal layer, and the first electrode of the sub-pixel in the display substrate shown in Figure 2A. Figure 2D is a schematic diagram of a partial cross-sectional structure taken along the line D1-D1' shown in Figure 2A. Figure 2E is a schematic diagram of a partial cross-sectional structure taken along the line E1-E1' shown in Figure 2A. Figure 2F is a schematic diagram of a partial cross-sectional structure taken along the line F1-F1' shown in Figure 2A. Figure 2G is a schematic diagram of a partial cross-sectional structure taken along the line D2-D2' shown in Figure 2A. Figure 2H is a schematic diagram of a partial cross-sectional structure taken along the line E2-E2' shown in Figure 2A. Figure 2I is a schematic diagram of a partial cross-sectional structure taken along the line F2-F2' shown in Figure 2A.

[0063] As shown in Figures 2A and 2B, the display substrate includes a base substrate 01, a plurality of sub-pixels 100 located on the base substrate 01, and a first metal layer 200. The plurality of sub-pixels 100 include at least first color sub-pixels 110. The first metal layer 200 includes a plurality of data lines 210, which are arranged along a first direction. For example, the data lines 210 are configured to transmit data signals.

[0064] Figures 2A and 2B schematically illustrate that the first direction is the X direction, such as the row direction. For example, at least one data line 210 extends along the second direction. Figures 2A and 2B schematically illustrate that the second direction is the Y direction, such as the column direction. For example, the first direction intersects the second direction. For example, the first direction is perpendicular to the second direction. The embodiments of the present disclosure are not limited to this, and the first direction and the second direction may be interchangeable.

[0065] As shown in Figures 2A and 2B, the light-emitting area 101 of the first color sub-pixel 110 includes a first side 111 extending along a first direction and a second side 112 extending along a second direction. The length of the first side 111 is greater than the length of the second side 112. For example, the light-emitting area 101 of the first color sub-pixel 110 can be in the shape of a quadrilateral, comprising two parallel first sides 111 and two parallel second sides 112. For example, the quadrilateral can be a rectangle, wherein the first side 111 can be the long side of the rectangle, and the second side 112 can be the short side of the rectangle. The long side of the rectangle is parallel to the row direction, and the short side of the rectangle is parallel to the column direction. For example, the long side of the light-emitting area 101 intersects the extension direction of the data line 210.

[0066] As shown in Figures 2A and 2B, the first metal layer 200 further includes a metal pad layer 220 located at least between adjacent data lines 210. The metal pad layer 220 is configured to transmit a power signal. For example, the power signal can be a constant voltage signal, such as a VDD signal, such as a positive voltage signal. For example, the metal pad layer 220 can be configured to be electrically connected to a voltage source. For example, the signal transmitted by the metal pad layer 220 is different from the signal transmitted by the data line 210.

[0067] As shown in Figures 2A and 2B , along a direction perpendicular to the base substrate 01, the metal pad layer 220 includes a first overlapping portion 221 that overlaps the light-emitting area 101 of at least one sub-pixel 100. The first overlapping portion 221 is a continuous structure. The first overlapping portion 221 being a continuous structure means that the portion of the metal pad layer 220 that overlaps the light-emitting area 101 of the same sub-pixel 100 is a single piece. For example, the shape of the first overlapping portion 221 can be a regular shape, such as a polygon, a quadrilateral, or a rectangle, but is not limited thereto. The shape of the first overlapping portion 221 can also be an irregular shape.

[0068] As shown in Figures 2A, 2B, and 2F, the first overlapping portions 221 are symmetrically distributed with respect to a first center line C1 extending along the second direction of the light-emitting region 101 of at least one sub-pixel 100, and the area of ​​the first overlapping portions 221 accounts for more than 60% of the area of ​​the light-emitting region 101. For example, the first overlapping portions 221 are symmetrically distributed with respect to the first center line C1 extending along the second direction of the light-emitting region 101 of the first color sub-pixel 110.

[0069] The display substrate provided by the present disclosure sets the long side of the light-emitting area of ​​the first color sub-pixel to intersect with the extension direction of the data line, and sets the metal pad layer that is arranged on the same layer as the data line and transmits the power signal to include a first overlapping portion that overlaps with the light-emitting area of ​​the sub-pixel. The first overlapping portion is symmetrically distributed with respect to the center line of the light-emitting area of ​​the sub-pixel, and the area of ​​the first overlapping portion accounts for more than 60% of the area of ​​the light-emitting area. This improves the flatness and symmetrical distribution effect of the portion of the film layer located in the light-emitting area, which is beneficial to improving the flatness of the electrode of the sub-pixel to improve color deviation and improve the display quality of the display device including the display substrate.

[0070] For example, as shown in Figures 2A and 2B, the portion where the metal pad layer 220 overlaps the light-emitting area 101 of each sub-pixel 100 is a first overlapping portion 221. For example, the first overlapping portion 221 where the metal pad layer 220 overlaps the light-emitting area 101 of the same color sub-pixel 100 has the same area. For example, the first overlapping portion 221 where the metal pad layer 220 overlaps the light-emitting area 101 of each first color sub-pixel 110 has the same area.

[0071] For example, as shown in Figures 2A and 2B, the first overlapping portion 221 can be a first overlapping portion 221 that overlaps with the light-emitting area 101 of the first color sub-pixel 110, and the area of ​​the first overlapping portion 221 accounts for more than 65%, or more than 70%, or more than 80%, or more than 82%, or 85% of the area of ​​the light-emitting area 101 of the first color sub-pixel 110.

[0072] In some examples, as shown in Figures 2A and 2B, the area of ​​the first overlapping portion 221 is smaller than the area of ​​the light-emitting area 101 of the first color sub-pixel 110. For example, the area of ​​the first overlapping portion 221 is less than 98% of the area of ​​the light-emitting area 101 of the first color sub-pixel 110 with which it overlaps. For example, the area of ​​the first overlapping portion 221 is less than 95%, less than 92%, less than 90%, less than 88%, or less than 85% of the area of ​​the light-emitting area 101 of the first color sub-pixel 110 with which it overlaps.

[0073] For example, as shown in Figures 2A, 2B and 2F, the size of the metal pad 220 in the first direction is smaller than the size of the light-emitting area 101 of the first color sub-pixel 110 overlapping with it in the first direction, and the size of the metal pad 220 in the second direction is larger than the size of the light-emitting area 101 of the first color sub-pixel 110 overlapping with it in the second direction.

[0074] In the display substrate provided by the embodiment of the present disclosure, by setting the area of ​​the first overlapping portion to be greater than 60% of the area of ​​the light-emitting area of ​​the first color sub-pixel and smaller than the area of ​​the light-emitting area of ​​the first color sub-pixel, the first color sub-pixel can be provided with a larger light-emitting area while improving the flatness of the electrode of the first color sub-pixel to improve the color deviation problem.

[0075] In some examples, as shown in Figures 2A and 2B, the plurality of sub-pixels 100 further include a second color sub-pixel 120, and the area of ​​the first overlapping portion 221 accounts for more than 90% of the area of ​​the light-emitting region 101 of the second color sub-pixel 120 with which it overlaps. For example, the area of ​​the first overlapping portion 221 accounts for more than 92%, or more than 95%, or more than 98% of the area of ​​the light-emitting region 101 of the second color sub-pixel 120 with which it overlaps.

[0076] For example, as shown in FIG. 2A , FIG. 2B and FIG. 2D , the first overlapping portions 221 are symmetrically distributed with respect to a first center line C1 of the light emitting region 101 of the second color sub-pixel 120 extending along the second direction.

[0077] In the display substrate provided by the embodiment of the present disclosure, by setting the first overlapping portion to be symmetrically distributed relative to the first center line extending along the second direction of the light-emitting area of ​​the second color sub-pixel, and setting the area of ​​the first overlapping portion to account for more than 90% of the area of ​​the light-emitting area of ​​the second color sub-pixel, the electrode flatness of the second color sub-pixel can be greatly improved to improve the color deviation problem.

[0078] For example, as shown in Figures 2A and 2B, the orthographic projection of the light-emitting area 101 of the second color sub-pixel 120 on the base substrate 01 completely falls within the orthographic projection of the metal pad layer 220 on the base substrate 01. By setting the orthographic projection of the light-emitting area 101 of the second color sub-pixel 120 on the base substrate 01 to completely fall within the metal pad layer 220, the flatness of the electrode of the second color sub-pixel 120 can be significantly improved, greatly improving the color shift phenomenon.

[0079] For example, as shown in Figures 2A, 2B and 2D, the size of the metal pad 220 in the first direction is larger than the size of the light-emitting area 101 of the second color sub-pixel 120 overlapping with it in the first direction, and the size of the metal pad 220 in the second direction is larger than the size of the light-emitting area 101 of the second color sub-pixel 120 overlapping with it in the second direction, so that the orthographic projection of the light-emitting area 101 of the second color sub-pixel 120 on the base substrate 01 completely falls within the orthographic projection of the metal pad 220 on the base substrate 01.

[0080] In some examples, as shown in Figures 2A, 2B, and 2E, the plurality of sub-pixels 100 further include a third-color sub-pixel 130, and the area of ​​the first overlapping portion 221 accounts for more than 90% of the area of ​​the light-emitting area 101 of the third-color sub-pixel 130 with which it overlaps. For example, the area of ​​the first overlapping portion 221 accounts for more than 92%, or more than 95%, or more than 98% of the area of ​​the light-emitting area 101 of the third-color sub-pixel 130 with which it overlaps. For example, the first overlapping portion 221 is symmetrically distributed with respect to a first centerline of the light-emitting area 101 of the third-color sub-pixel 130 extending along the second direction. For example, the first centerline of the light-emitting area 101 of one second-color sub-pixel 120 can be co-aligned with the first centerline of at least one third-color sub-pixel 130.

[0081] In the display substrate provided by the embodiment of the present disclosure, by setting the first overlapping portion to be symmetrically distributed relative to the first center line extending along the second direction of the light-emitting area of ​​the third color sub-pixel, and setting the area of ​​the first overlapping portion to account for more than 90% of the area of ​​the light-emitting area of ​​the third color sub-pixel, the electrode flatness of the third color sub-pixel can be greatly improved to improve the color deviation problem.

[0082] For example, as shown in FIG. 2A and FIG. 2B , the orthographic projection of the light-emitting area 101 of the third color sub-pixel 130 on the base substrate 01 completely falls within the orthographic projection of the metal pad layer 220 on the base substrate 01 .

[0083] For example, as shown in Figures 2A, 2B and 2E, the size of the metal pad 220 in the first direction is larger than the size of the light-emitting area 101 of the third color sub-pixel 130 overlapping with it in the first direction, and the size of the metal pad 220 in the second direction is larger than the size of the light-emitting area 101 of the third color sub-pixel 130 overlapping with it in the second direction, so that the orthographic projection of the light-emitting area 101 of the third color sub-pixel 130 on the base substrate 01 can completely fall within the orthographic projection of the metal pad 220 on the base substrate 01.

[0084] By setting the orthographic projections of the light-emitting areas of the second color sub-pixel and the third color sub-pixel on the base substrate to completely fall within the metal pad layer, the color shift phenomenon of sub-pixels of different colors can be significantly improved as a whole.

[0085] In some examples, as shown in Figures 2A and 2B, the first color subpixel 110 is a blue subpixel, and one of the second color subpixel 120 and the third color subpixel 130 is a red subpixel, while the other is a green subpixel. For example, the second color subpixel 120 is a red subpixel, and the third color subpixel 130 is a green subpixel. For example, the second color subpixel 120 and the third color subpixel 130 can be interchangeable.

[0086] 2A and 2B , the areas of the light-emitting regions 101 of the second-color sub-pixel 120 and the light-emitting regions 101 of the third-color sub-pixel 130 are both smaller than the area of ​​the light-emitting region 101 of the first-color sub-pixel 110. For example, the area of ​​the light-emitting region 101 of the second-color sub-pixel 120 may be larger than or smaller than the area of ​​the light-emitting region 101 of the third-color sub-pixel 130.

[0087] For example, as shown in Figures 2A and 2B, the shape of the light-emitting area 101 of the second color sub-pixel 120 includes a quadrilateral, such as a rectangle, and the light-emitting area 101 of the second color sub-pixel 120 includes two sides extending along the first direction and two sides extending along the second direction. For example, the shape of the light-emitting area 101 of the third color sub-pixel 130 includes a quadrilateral, such as a rectangle, and the light-emitting area 101 of the third color sub-pixel 130 includes two sides extending along the first direction and two sides extending along the second direction.

[0088] In some examples, as shown in Figures 2A and 2B, the length of the side of the light-emitting area 101 of the second color sub-pixel 120 extending along the first direction and the length of the side of the light-emitting area 101 of the third color sub-pixel 130 extending along the first direction are both shorter than the length of the first side 111 of the first color sub-pixel 110. For example, the length of the side of the light-emitting area 101 of the second color sub-pixel 120 extending along the second direction can be longer than the length of the second side 112 of the first color sub-pixel 110, or shorter than the length of the second side 112 of the first color sub-pixel 110. For example, the length of the side of the light-emitting area 101 of the third color sub-pixel 130 extending along the second direction can be longer than the length of the second side 112 of the first color sub-pixel 110, or shorter than the length of the second side 112 of the first color sub-pixel 110.

[0089] In some examples, as shown in Figures 2A, 2B, and 2G to 2I, the first overlapping portion 221 is symmetrically distributed relative to the second center line C2 of the light-emitting area 101 of at least one sub-pixel 100, extending along the first direction. For example, the first overlapping portion 221 is symmetrically distributed relative to the second center line C2 of the light-emitting area 101 of each sub-pixel 100, extending along the first direction. For example, the first overlapping portion 221 is symmetrically distributed relative to the second center line C2 of the light-emitting area 101 of the first color sub-pixel 110, extending along the first direction. For example, the first overlapping portion 221 is symmetrically distributed relative to the second center line C2 of the light-emitting area 101 of the second color sub-pixel 120, extending along the first direction. For example, the first overlapping portion 221 is symmetrically distributed relative to the second center line C2 of the light-emitting area 101 of the third color sub-pixel 130, extending along the first direction.

[0090] In the display substrate provided by the present disclosure, by symmetrically distributing the first overlapping portion relative to the first center line of the light-emitting area of ​​the sub-pixel, and also setting the first overlapping portion 221 to be symmetrically distributed relative to the second center line of the light-emitting area of ​​the sub-pixel, it is beneficial to improve the flatness of the electrode of the sub-pixel in various directions, so as to improve the color deviation problem of the sub-pixel in at least one of the first direction and the second direction, or even in directions other than the first direction and the second direction.

[0091] In some examples, as shown in Figures 2A and 2B, the metal pad layer 220 extends along the second direction. For example, the size of the metal pad layer 220 in the second direction is larger than the size of the metal pad layer 220 in the first direction. For example, the maximum size of the metal pad layer 220 in the first direction is larger than the maximum size of the data line 210 in the first direction. For example, the size of the data line 210 in the first direction is smaller than the size of the light-emitting area 101 of any sub-pixel in the first direction.

[0092] For example, as shown in Figures 2A and 2B, there are multiple metal pads 220, and the multiple metal pads 220 are arranged along a first direction. For example, two data lines 210 are arranged between two adjacent metal pads 220. For example, the first metal layer 200 also includes other signal lines 240, and a metal pad 220 or other signal lines 240 are arranged between two adjacent data lines 210. For example, the other signal lines 240 may include a signal line for transmitting a signal Vss, such as a ground signal, or a signal line for transmitting a reset signal Vinit. For example, in a direction perpendicular to the base substrate 01, the light-emitting area 101 of any sub-pixel 100 does not overlap with other signal lines 240.

[0093] In some examples, as shown in Figures 2A, 2B, and 2F, the length of the first side 111 of the first color sub-pixel 110 is greater than the maximum dimension of the metal pad 220 in the first direction, and in a direction perpendicular to the base substrate 01, the light-emitting area 101 of the same first color sub-pixel 110 overlaps with a metal pad 220 and two data lines 210, and the two parts where the two data lines 210 overlap with the light-emitting area 101 of the same first color sub-pixel 110 are symmetrically distributed relative to the first center line.

[0094] In addition to overlapping with the metal pad layer, the light-emitting area of ​​the first color sub-pixel also overlaps with the data line. The two parts where the data line overlaps with the light-emitting area of ​​the same first color sub-pixel are set to be symmetrically distributed relative to the first center line. This can improve the flatness of the electrode at the edge of the light-emitting area of ​​the first color sub-pixel, thereby improving the color deviation problem at the edge of the light-emitting area of ​​the first color sub-pixel.

[0095] For example, as shown in Figures 2A, 2B, and 2F, in a direction perpendicular to the base substrate 01, the edges of the light-emitting area 101 of the first color sub-pixel 110 overlap with two data lines 210. By setting the positional relationship between the light-emitting area 101 of the first color sub-pixel 110 and the data lines 210 so that both edges of the light-emitting area 101 overlap with the data lines 210, the electrodes at the edges of the light-emitting area 101 can be arranged to be symmetrically distributed, which helps to reduce the color shift phenomenon at the edges of the light-emitting area 101.

[0096] In some examples, as shown in Figures 2A and 2B, the orthographic projection of the light-emitting area 101 of the first color sub-pixel 110 on the line SL extending along the second direction is a first orthographic projection, the orthographic projection of the light-emitting area 101 of the second color sub-pixel 120 on the line SL extending along the second direction is a second orthographic projection, and the orthographic projection of the light-emitting area 101 of the third color sub-pixel 130 on the line SL is a third orthographic projection. The same first orthographic projection only overlaps with one of the second orthographic projection and the third orthographic projection arranged along the second direction. For example, one of the two first orthographic projections of two adjacent first color sub-pixels 110 arranged along the second direction overlaps with the second orthographic projection, and the other first orthographic projection overlaps with the third orthographic projection.

[0097] By setting the orthographic projection overlapping relationship of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel on the straight line extending along the second direction, it is beneficial to increase the overlapping area between the different color sub-pixels and the metal pad layer, thereby improving the flatness of the first electrodes of the different color sub-pixels to alleviate the color deviation phenomenon.

[0098] In some examples, as shown in Figures 2A, 2C, and 2I, the display substrate further includes a second metal layer 300 and an insulating layer 400. The second metal layer 300 is located between the first metal layer 200 and the base substrate 01, and the insulating layer 400 is located between the first metal layer 200 and the second metal layer 300. The metal pad layer 220 includes a first signal line 222, and the second metal layer 300 includes a plurality of second signal lines 310. The plurality of second signal lines 310 are arranged along a second direction. The second signal lines 310 are electrically connected to the first signal lines 222 through first vias 410 in the insulating layer 400. The orthographic projection of the first vias 410 on the base substrate 01 does not overlap with the orthographic projection of the light-emitting area 101 of any sub-pixel 100 on the base substrate 01. For example, the insulating layer 400 can be a flat layer.

[0099] In the display substrate provided herein, the provision of a second signal line electrically connected to the first signal line facilitates reducing the resistance of the signal line transmitting power signals, such as the VDD signal, thereby reducing voltage drop and improving the stability of the power supply voltage. In the case of providing the second signal line electrically connected to the first signal line, the first via hole in the planarization layer connecting the first signal line and the second signal line is arranged to avoid the light-emitting area of ​​any sub-pixel, further improving the flatness of the first electrode in the sub-pixel and thereby alleviating color shift.

[0100] For example, as shown in Figures 2A to 2C , along a direction perpendicular to the base substrate 01, the first via hole 410 does not overlap with the first electrode 1001 of the first color sub-pixel 110. For example, along a direction perpendicular to the base substrate 01, a portion of the first via hole 410 overlaps with an edge of the first electrode 1001 of the second color sub-pixel 120. For example, along a direction perpendicular to the base substrate 01, a portion of the first via hole 410 does not overlap with the first electrode 1001 of the third color sub-pixel 130.

[0101] For example, as shown in FIG. 2A and FIG. 2C , the second metal layer 300 further includes a reset control signal line 551 , a scan signal line 552 , a connecting portion 553 and other structures. For details, please refer to FIG. 10E described later.

[0102] In some examples, as shown in Figures 2A, 2C, and 2F, the second metal layer 300 includes a second overlapping portion 320 that overlaps the light-emitting region 101 of at least one sub-pixel 100, and the second overlapping portion 320 is symmetrically distributed with respect to the first center line C1. By arranging the second overlapping portion 320 in the second metal layer 300 that overlaps the light-emitting region 101 of the sub-pixel to be symmetrically distributed with respect to the first center line, the flatness of the first electrode 1001 of the sub-pixel can be further improved.

[0103] For example, as shown in Figures 2A, 2C to 2F, the second metal layer 300 includes a second overlapping portion 320 overlapping the light-emitting area 101 of each color sub-pixel 100, and the second overlapping portions 320 overlapping each light-emitting area 101 are basically symmetrically distributed relative to the first center line C1.

[0104] For example, as shown in Figures 2A and 2C, the second overlapping portion 320 overlapping the light-emitting area 101 of the sub-pixel 100 is not a monolithic structure, but includes multiple sub-portions, and the multiple sub-portions are substantially symmetrically distributed with respect to the first center line C1 of the light-emitting area 101. For example, the second overlapping portion 320 overlapping the light-emitting area 101 of the sub-pixel 100 includes a scanning signal line 552 extending along a first direction, a connecting portion 553, and a second signal line 310. For example, the second signal line 310 includes a main portion extending along the first direction and branch portions extending along the second direction, and portions of the branch portions that overlap with the light-emitting area of ​​the sub-pixel are substantially symmetrically distributed with respect to the first center line.

[0105] For example, as shown in Figures 2A and 2C, the plurality of sub-pixels 100 includes multiple rows of sub-pixels arranged along the second direction, and the second overlapping portions 320 that overlap the light-emitting areas 101 of the first-color sub-pixels 110 located in two adjacent rows of sub-pixels have different shapes. For example, the first overlapping portions 221 that overlap the light-emitting areas 101 of the first-color sub-pixels 110 located in two adjacent rows of sub-pixels have different shapes. For example, the second overlapping portions 320 that overlap the light-emitting areas 101 of each second-color sub-pixel 120 have the same shape. For example, the first overlapping portions 221 that overlap the light-emitting areas 101 of each second-color sub-pixel 120 have the same shape. For example, the second overlapping portions 320 that overlap the light-emitting areas 101 of each third-color sub-pixel 130 have the same shape.

[0106] In some examples, as shown in FIG2D , each sub-pixel 100 includes a first electrode 1001, a light-emitting functional layer 1003, and a second electrode 1002, which are sequentially stacked in a direction perpendicular to the base substrate 01, with the first electrode 1001 located between the light-emitting functional layer 1003 and the base substrate 01. In this disclosure, only FIG2D schematically illustrates the light-emitting functional layer 1003 and the second electrode 1002 located on the side of the first electrode 1001 away from the base substrate 01.

[0107] For example, as shown in FIG2D , the light-emitting functional layer 1003 may include a light-emitting layer for emitting light and other functional layers, such as a hole transport layer, an electron transport layer, a hole blocking layer, an electron blocking layer, and other film layers. For example, the above-mentioned other functional layers and the second electrode 1002 may be a whole film layer shared by each sub-pixel 100, and the first electrodes 1001 of different sub-pixels are arranged at intervals, and the light-emitting layers of different sub-pixels 100 are arranged at intervals. For example, the first electrode 1001 may be an anode, and the second electrode 1002 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 metal material. For example, the anode may be formed of a transparent conductive material with a high work function.

[0108] For example, as shown in Figure 2D, the display substrate also includes a flat layer 03 located between the first electrode 1001 and the base substrate 01, and other film layers 02 located between the second metal layer 300 and the base substrate 01, such as the bottom shielding layer 510, the active layer pattern 520, the first conductive layer pattern 530, the second conductive layer pattern 540 shown in Figures 10A to 10D described later, and the insulating layer located between adjacent conductive layers.

[0109] For example, as shown in FIG2D , the display substrate includes a pixel-defining pattern 04, which includes an opening to define a sub-pixel light-emitting region 101. For example, two sides of a light-emitting functional layer 1003 located within the light-emitting region 101 are in contact with a first electrode 1001 and a second electrode 1002, respectively, to achieve light emission under the drive of the pixel circuit.

[0110] In some examples, as shown in FIG2B , the metal pad layer 220 includes a plurality of hollow portions 223 , wherein two portions of the metal pad layer 220 located on either side of the same hollow portion 223 in the second direction are connected to each other. For example, the two portions on either side of the same hollow portion 223 in the second direction both extend along the second direction. For example, the hollow portion 223 may be an opening in the metal pad layer 220 , which is surrounded by the metal material in the metal pad layer 220 .

[0111] In some examples, as shown in FIG2B , along a direction perpendicular to the base substrate 01, a portion of the first electrode 1001 that does not overlap with the light-emitting region 101 overlaps with the hollow portion 223. For example, the first electrode 1001 includes a main electrode that overlaps with the light-emitting layer and a connection electrode for connecting to the pixel circuit. The main electrode has a shape substantially the same as that of the light-emitting region 101, such as a rectangle. In a direction perpendicular to the base substrate 01, the connection electrode does not overlap with the light-emitting region 101 of the sub-pixel, and overlaps with the hollow portion 223 to be electrically connected to the pixel circuit located in another film layer, such as the light-emitting control transistor, through the first connection portion 230 in the hollow portion 223.

[0112] The display substrate provided by the present disclosure can reduce the influence of the first metal layer on the flatness of the portion of the first electrode of the sub-pixel located in the opening of the pixel defining pattern, thereby alleviating the color deviation problem, by arranging a hollow portion that does not overlap with the light-emitting area of ​​the sub-pixel on the metal pad layer. This can not affect the electrical connection relationship between the first electrode of the sub-pixel and the pixel circuit.

[0113] For example, as shown in FIG2B , the size of the hollow portion 223 in the first direction can be larger than the size of the light-emitting area 101 of the second color sub-pixel 120 in the first direction. For example, the size of the hollow portion 223 in the second direction can be smaller than the spacing between the light-emitting areas 101 of adjacent sub-pixels 100 arranged in the second direction. For example, the light-emitting areas 101 of two sub-pixels 100 are located between two adjacent hollow portions 223 arranged in the second direction.

[0114] In some examples, as shown in FIG2B , the plurality of sub-pixels 100 include a plurality of sub-pixel columns arranged along a first direction, and each sub-pixel column includes sub-pixels 100 arranged along a second direction. For example, in the example shown in FIG2B , the sub-pixels in the same column may include a plurality of first-color sub-pixels 110 arranged along the second direction, or the sub-pixels in the same column arranged along the second direction may include second-color sub-pixels 120 and third-color sub-pixels 130.

[0115] In some examples, as shown in FIG2B , along a direction perpendicular to the base substrate 01, the first electrodes 1001 of two adjacent sub-pixels 100 arranged along the second direction overlap with the same hollow portion 223. For example, the first electrodes 1001 of two sub-pixels 100 located on either side of the same hollow portion 223 in the second direction and immediately adjacent to the same hollow portion 223 both overlap with the same hollow portion 223, which helps improve the utilization of the hollow portion 223, saves pixel circuit layout space, and thereby increases the opening area of ​​the sub-pixels. For example, the first electrodes 1001 of two adjacent sub-pixels 100 arranged along the second direction are connected to different first connecting portions 230 in the same hollow portion 223.

[0116] For example, as shown in FIG2B , among the sub-pixels 100 arranged along the second direction, at a position where a hollow portion 223 is provided between two adjacent sub-pixels 100, the spacing between the light-emitting areas 101 of the two adjacent sub-pixels 100 is a first spacing, and at a position where no hollow portion 223 is provided between two adjacent sub-pixels 100, the spacing between the light-emitting areas 101 of the two adjacent sub-pixels is a second spacing, where the first spacing is greater than the second spacing. For example, the first spacing and the second spacing are alternately provided in the second direction.

[0117] In some examples, as shown in Figures 2A to 2C, the second metal layer 300 further includes a plurality of second connecting portions 330, the data line 210 includes a plurality of protrusions 214, the protrusions 214 being electrically connected to the second connecting portions 330 via second vias 420 in the insulating layer 400, and the edge of the metal pad layer 220 extending along the second direction includes a notch 224, with the protrusions 214 being disposed opposite the notch 224. For example, the data line 210 includes a main portion extending along the second direction and a plurality of protrusions 214, with the protrusions 214 being located on a side of the data line 210 proximal to the metal pad layer 220. The metal pad layer 220 includes the notches 224 at positions opposite the protrusions 214 of the data line 210, thereby preventing short circuits between the metal pad layer 220 and the data line 210, which are disposed on the same layer.

[0118] For example, as shown in FIG2B , the size of the notch 224 of the metal pad 220 in the second direction is larger than the size of the protrusion 214 of the data line 210 in the second direction. For example, the ratio of the distance between the data line 210 excluding the protrusion 214 and the metal pad 220 in the first direction to the distance between the protrusion 214 and the notch 224 in the first direction is 0.8 to 1.2, or 0.9 to 1.1, or the same.

[0119] 2B , a straight line extending along the first direction and passing through the hollow portion 223 does not pass through the notch 224. By staggering the hollow portion 223 and the notch 224 in the metal pad layer 220, the width of the metal pad layer 220 at each position can be maximized.

[0120] For example, as shown in FIG2B , in the same metal pad layer 220 extending along the second direction, the notches 224 and the hollow portions 223 are alternately arranged along the second direction. For example, both side edges extending along the second direction of the same metal pad layer 220 include notches 224, and the notches 224 on both side edges are passed through by the same straight line extending along the first direction. The two notches 224 passed through by the same straight line can be referred to as a pair of notches 224. For example, the shape and size of the pair of notches 224 in the same metal pad layer 220 are the same. For example, the notches 224 located on the same side edge of the same metal pad layer 220 are evenly distributed, and the shape and size of each notch 224 are the same.

[0121] In some examples, as shown in FIG2B , the ratio of the widths of the metal pad layer 220 at locations other than the hollow portion 223 and the notch 224 is 0.9 to 1.1, or is equal. Adjusting the widths of the metal pad layer 220 at locations other than the hollow portion 223 and the notch 224 facilitates uniform conductivity and facilitates fabrication of the metal pad layer 220.

[0122] In some examples, as shown in FIG. 2B , a straight line L1 passing through the edge of the hollow portion 223 and extending along the second direction does not pass through the notch 224 , which is beneficial for increasing the width of the metal pad layer 220 at the notch 224 .

[0123] 2B , the straight line L1 may pass through the edge of the orthographic projection of the first electrode 1001 of the second color sub-pixel 120 on the metal pad layer 220. For example, the straight line L1 may pass through the edge of the orthographic projection of the first electrode 1001 of the third color sub-pixel 130 on the metal pad layer 220.

[0124] In some examples, as shown in FIG2B , two first connection portions 230 are disposed in the same hollow portion 223, and the two first connection portions 230 are symmetrically distributed relative to a center line extending along the second direction of the metal pad layer 220. The symmetrical distribution of the two first connection portions 230 in the same hollow portion 223 helps improve the symmetry of the first metal layer 200.

[0125] For example, as shown in FIG. 2B , the first metal layer 200 includes the first connecting portion 230 , and the first electrode 1001 of the sub-pixel 100 is electrically connected to the thin film transistor in the pixel circuit via the first connecting portion 230 .

[0126] For example, as shown in FIG. 2B , the distance between the two first connection portions 230 is greater than the distance between the first connection portion 230 and the edge of the hollow portion 223 , so as to reduce the risk of short circuit between the two first connection portions 230 .

[0127] For example, as shown in FIG2B , the ratio of the maximum widths of different metal pad layers 220 can be 0.95 to 1.05, such as 1. For example, the shapes of the hollow portions 223 in different metal pad layers 220 are the same. For example, the ratio of the dimensions of the hollow portions 223 in different metal pad layers 220 in the first direction can be 0.95 to 1.05, such as 1, and the ratio of the dimensions of the hollow portions 223 in different metal pad layers 220 in the second direction can be 0.95 to 1.05, such as 1.

[0128] Figure 3 is a schematic diagram of the arrangement of multiple sub-pixels of the display substrate shown in Figure 2A. Figure 3 schematically shows six rows and six columns of sub-pixels.

[0129] In some examples, as shown in FIG2A and FIG3 , the plurality of sub-pixels 100 includes a plurality of sub-pixel columns 10 arranged along a first direction, the plurality of sub-pixel columns 10 including a plurality of first sub-pixel columns 11 and a plurality of second sub-pixel columns 12, two first sub-pixel columns 11 are disposed between two adjacent second sub-pixel columns 12, the first sub-pixel columns 11 include a plurality of second-color sub-pixels 120 and a plurality of third-color sub-pixels 130 arranged along a second direction, and the second sub-pixel columns 12 include a plurality of first-color sub-pixels 110 arranged along the second direction. The aforementioned two adjacent second sub-pixel columns 12 refer to two second sub-pixel columns 12 having no other second sub-pixel columns 12 disposed therebetween.

[0130] In some examples, as shown in Figures 2A and 3, multiple second-color sub-pixels 120 and multiple third-color sub-pixels 130 are alternately arranged along the second direction, and two sub-pixels 100 arranged along the first direction in two adjacent first sub-pixel columns 11 are sub-pixels of the same color, such as two sub-pixels 100 of the same color can be two second-color sub-pixels 120 or two third-color sub-pixels 130.

[0131] For example, as shown in FIG. 2A and FIG. 3 , two second color sub-pixels 120 or two third color sub-pixels 130 are disposed between two adjacent first color sub-pixels 110 arranged along the first direction.

[0132] For example, as shown in Figure 3, a mask plate for forming multiple sub-pixels, such as a fine metal mask plate (FMM), may include a mask opening 011, a mask opening 012, and a mask opening 013. The mask openings of two adjacent sub-pixels of the same color are merged into the same mask opening. For example, one mask opening 011 is used to form the light-emitting layer of two adjacent first-color sub-pixels 110, one mask opening 012 is used to form the light-emitting layer of two adjacent second-color sub-pixels 120, and one mask opening 013 is used to form the light-emitting layer of two adjacent third-color sub-pixels 130.

[0133] By merging the mask openings of two adjacent sub-pixels of the same color into one, 2R in 1, 2G in 1 and 2B in 1 are achieved, which is beneficial to improving the aperture ratio of the sub-pixels, increasing the size of the mask bridging part (Rib), reducing the mask tension deformation variable, and improving product yield.

[0134] Figure 4 is a schematic diagram of a partial planar structure of a display substrate provided according to another example embodiment of the present disclosure. Figure 5 is a schematic diagram of the sub-pixel distribution within the display substrate shown in Figure 4. Figure 6 is a mask used to form the light-emitting layer of the display substrate shown in Figure 5. The distances between the openings in Figure 6 are for illustration only; the actual distances between openings in the mask can be designed based on product requirements.

[0135] The display substrate shown in FIG4 differs from the display substrate shown in FIG2A primarily in the arrangement of second-color sub-pixels 120 and third-color sub-pixels 130. Features of the display substrate shown in FIG4 , such as first metal layer 200, second metal layer 300, and the positional relationship between each metal layer and the sub-pixel's light-emitting area 101, are essentially the same as those shown in FIG2A and are not further described here.

[0136] In some examples, as shown in Figures 4 and 5, in the same first sub-pixel column 11, two second color sub-pixels 120 form a first sub-pixel pair 0110, and two third color sub-pixels 130 form a second sub-pixel pair 0120. The first sub-pixel pair 0110 and the second sub-pixel pair 0120 are alternately arranged along the second direction, and the two sub-pixels arranged along the first direction in two adjacent first sub-pixel columns 11 are sub-pixels of the same color.

[0137] For example, as shown in Figures 4 and 5, a straight line extending along the second direction passes through the connecting electrodes of two second-color sub-pixels 120 in the same first sub-pixel pair 0110, and the two connecting electrodes of the two second-color sub-pixels 120 are located on either side of the two main electrodes. For example, the two first electrodes 1001 of the two second-color sub-pixels 120 in the same first sub-pixel pair 0110 are symmetrically distributed with respect to the straight line extending along the first direction and located between the two second-color sub-pixels 120. For example, a straight line extending along the second direction passes through the connecting electrodes of two third-color sub-pixels 130 in the same second sub-pixel pair 0120, and the two connecting electrodes of the two third-color sub-pixels 130 are located on either side of the two main electrodes. For example, the two first electrodes 1001 of the two third-color sub-pixels 130 in the same second sub-pixel pair 0120 are symmetrically distributed with respect to the straight line extending along the first direction and located between the two third-color sub-pixels 130.

[0138] For example, as shown in FIG6 , a mask plate for forming multiple sub-pixels, such as a fine metal mask plate (FMM), may include mask opening 011, mask opening 012, and mask opening 013. The mask openings of four adjacent sub-pixels of the same color are merged into a single mask opening. For example, one mask opening 011 is used to form the light-emitting layer of four adjacent first-color sub-pixels 110, one mask opening 012 is used to form the light-emitting layer of four adjacent second-color sub-pixels 120, and one mask opening 013 is used to form the light-emitting layer of four adjacent third-color sub-pixels 130. For example, the four adjacent first-color sub-pixels 110 are arranged along the second direction, the four adjacent second-color sub-pixels 120 are arranged in an array along the first and second directions, and the four adjacent third-color sub-pixels 130 are arranged in an array along the first and second directions.

[0139] By merging the mask openings of four adjacent sub-pixels of the same color into one, 4R in 1, 4G in 1 and 4B in 1 are achieved, which is beneficial to further improve the aperture ratio of the sub-pixels, increase the size of the mask bridging part (Rib), reduce the mask grid deformation variable, and improve product yield.

[0140] In some examples, as shown in FIG2C , the plurality of data lines 210 includes a first data line 211 electrically connected to the first color sub-pixel 110, a second data line 212 electrically connected to the second color sub-pixel 120, and a third data line 213 electrically connected to the third color sub-pixel 130. The plurality of data lines 210 includes a plurality of data line groups 2100 arranged along a first direction, and each data line group 2100 includes a second data line 212, a third data line 213, a first data line 211, a first data line 211, a second data line 212, and a third data line 213 arranged in sequence along the first direction. With the first color sub-pixel 110 being B, the second color sub-pixel 120 being G, and the third color sub-pixel 130 being R, the sub-pixels where the pixel circuits are located arranged along the first direction can be arranged in a cyclic order of RGBBGR.

[0141] Figure 7 is a schematic diagram of a partial planar structure of a display substrate according to another example of an embodiment of the present disclosure. Figure 8 is a mask for forming a light-emitting layer of the display substrate shown in Figure 7 .

[0142] The display substrate shown in FIG7 differs from the display substrate shown in FIG2A primarily in the arrangement of first-color sub-pixels 110, second-color sub-pixels 120, and third-color sub-pixels 130. Features of the display substrate shown in FIG7 , such as the first metal layer 200, second metal layer 300, and the positional relationship between each metal layer and the sub-pixel's light-emitting area 101, are essentially the same as those shown in FIG2A and are not further described here.

[0143] In some examples, as shown in FIG7 , the plurality of sub-pixels 100 includes a plurality of sub-pixel columns arranged along a first direction, the plurality of sub-pixel columns including a plurality of third sub-pixel columns 13, a plurality of fourth sub-pixel columns 14, and a plurality of fifth sub-pixel columns 15. The third sub-pixel columns 13 include second-color sub-pixels 120 and third-color sub-pixels 130 arranged alternately along a second direction, the fourth sub-pixel columns 14 include first-color sub-pixels 110 and second-color sub-pixels 120 arranged alternately along the second direction, and the fifth sub-pixel columns 15 include first-color sub-pixels 110 and third-color sub-pixels 130 arranged alternately along the second direction. For example, the third sub-pixel columns 13, the fourth sub-pixel columns 14, and the fifth sub-pixel columns 15 are sequentially arranged in a cyclic manner along the first direction.

[0144] For example, as shown in Figure 8, a mask plate for forming multiple sub-pixels, such as a fine metal mask plate (FMM), may include a mask opening 011, a mask opening 012, and a mask opening 013, one mask opening 011 is used to form a light-emitting layer of a first color sub-pixel 110, one mask opening 012 is used to form a light-emitting layer of a second color sub-pixel 120, and one mask opening 013 is used to form a light-emitting layer of a third color sub-pixel 130.

[0145] In some examples, as shown in FIG7 , the plurality of data lines 210 include a first data line 211 electrically connected to the first color sub-pixel 110, a second data line 212 electrically connected to the second color sub-pixel 120, and a third data line 213 electrically connected to the third color sub-pixel 130. The plurality of data lines 210 include a plurality of data line groups 2100 arranged along a first direction, and each data line group 2100 includes a second data line 212, a third data line 213, a first data line 211, a second data line 212, a third data line 213, and a first data line 211 arranged in sequence along the first direction. With the first color sub-pixel 110 being B, the second color sub-pixel 120 being G, and the third color sub-pixel 130 being R, the sub-pixels where the pixel circuits are located arranged along the first direction can be arranged in a cyclic order of RGBRGB.

[0146] It can be seen from FIG. 2C and FIG. 7 that the data line arrangement can be adapted to different sub-pixel arrangements. There is no need to change the data line arrangement or to support IC insertion sequence due to different sub-pixel arrangements. For example, the source sequence can be arranged normally.

[0147] Figure 9 is an equivalent circuit diagram of a pixel circuit included in the display substrate shown in Figures 2A to 6. Figures 10A to 10G are schematic diagrams of different film layers in the display substrate, and Figure 2A includes the schematic diagram of the film layer stacking shown in Figures 10A to 10G.

[0148] In some examples, as shown in Figures 2A to 6 and 9, the sub-pixel includes a pixel circuit, the pixel circuit includes a light-emitting control transistor T6 located between the first electrode 1001 of the sub-pixel and the base substrate 01, the first metal layer 200 also includes a first connecting portion 230 located in the hollow portion 223, and the first electrode 1001 of the sub-pixel is electrically connected to the light-emitting control transistor through the first connecting portion 230.

[0149] For example, as shown in FIG9 , the pixel circuit includes a plurality of transistors and at least one capacitor. For example, the pixel circuit includes a second reset transistor T1, a threshold compensation transistor T2, a driving transistor T3, a data writing transistor T4, a second light emission control transistor T5, a first light emission control transistor T6, a first reset transistor T7, a third reset transistor T8, and a storage capacitor C.

[0150] For example, as shown in FIG10A , the display substrate includes a bottom shield metal (BSM) 510. The bottom shield metal 510 is located between the base substrate 01 and the pixel circuit. The orthographic projection of the bottom shield metal 510 on the base substrate 01 covers the orthographic projection of the driving transistor T3 on the base substrate 01. The shield metal BSM can be connected to a signal line (e.g., a voltage signal line VDD) that transmits a constant voltage signal, thereby improving the stability of the voltage signal of a film layer located on the side of the bottom shield metal 510 away from the base substrate 01 (e.g., the film layer where the gate of the driving transistor T4 is located), thereby preventing interference with the signal of the film layer.

[0151] For example, as shown in Figures 9 to 10G, the first electrode of the threshold compensation transistor T2 is electrically connected to the first electrode of the driving transistor T3, the second electrode of the threshold compensation transistor T2 is electrically connected to the gate of the driving transistor T3, and the gate of the threshold compensation transistor T2 is electrically connected to the scanning signal line 552 to receive the compensation control signal; the first electrode of the first reset transistor T7 is electrically connected to the reset power supply signal line 557 to receive the reset signal Vinit2, the second electrode of the first reset transistor T7 is electrically connected to the first electrode 1001 of the light-emitting element OLED, and the gate of the first reset transistor T7 is electrically connected to the reset control signal line 5 35 is electrically connected to receive the reset control signal Reset2; the first electrode of the third reset transistor T8 is electrically connected to the reset power signal line 558 to receive the reset signal Vinit3, the second electrode of the third reset transistor T8 is electrically connected to the second electrode of the driving transistor T3, and the gate of the third reset transistor T8 is electrically connected to the reset control signal line 535; the first electrode of the data writing transistor T4 is electrically connected to the second electrode of the driving transistor T3, the second electrode of the data writing transistor T4 is electrically connected to the data line 210 to receive the data signal Data, and the gate of the data writing transistor T4 is electrically connected to the scanning signal line 552 The first electrode of the storage capacitor Cst is electrically connected to the power signal line 220, and the second electrode of the storage capacitor C is electrically connected to the gate of the driving transistor T3; the first electrode of the second reset transistor T1 is electrically connected to the reset power signal line 521 to receive the reset signal Vinit1, the second electrode of the second reset transistor T1 is electrically connected to the gate of the driving transistor T3, and the gate of the second reset transistor T1 is electrically connected to the reset control signal line 551 to receive the reset control signal Reset; the gate of the first light-emitting control transistor T6 is electrically connected to the light-emitting control signal line EM to receive The first electrode of the first emission control transistor T6 is electrically connected to the first electrode of the driving transistor T3, and the second electrode of the first emission control transistor T6 is electrically connected to the first electrode 1001 of the light-emitting element. The first electrode of the second emission control transistor T5 is electrically connected to the power signal line 220 to receive the first power signal VDD, the second electrode of the second emission control transistor T5 is electrically connected to the second electrode of the driving transistor T3, and the gate of the second emission control transistor T5 is electrically connected to the emission control signal line EM to receive the emission control signal. The second electrode 1002 of the light-emitting element is electrically connected to the voltage terminal VSS. The power signal line refers to a signal line that outputs the voltage signal VDD and can be connected to a voltage source to output a constant voltage signal, such as a positive voltage signal.

[0152] Figure 10B shows an active layer pattern 520. For example, as shown in Figure 10B, the active layer pattern 520 can be used to form the active layers of the aforementioned drive transistor T3, data write transistor T4, second emission control transistor T5, first emission control transistor T6, first reset transistor T7, and third reset transistor T8, thereby forming the channel regions of these transistors. The active layer pattern 520 includes the active region pattern (channel region) and doped region pattern (source and drain region) of the aforementioned transistors in each sub-pixel, and the active region pattern and doped region pattern of the aforementioned transistors in the same pixel circuit are integrally arranged.

[0153] For example, the active layer pattern 520 may include an integrally formed low-temperature polysilicon layer, and the source region and the drain region may be conductively doped to achieve electrical connection between the structures. For example, the source region and the drain region may be regions doped with p-type impurities.

[0154] FIG10C shows a first conductive layer pattern 530 located on a side of the active layer pattern 520 away from the base substrate 01. For example, as shown in FIG10C , the first conductive layer pattern 530 includes a connection portion 533 connecting the gate of the second reset transistor T1 with the reset control signal line 551, a connection portion 532 connecting the gate of the threshold compensation transistor T2 with the scan signal line 552, a connection portion 534 connecting the gate of the data write transistor T4 with the scan signal line 552, a reset control signal line 535, a first electrode 531 of the capacitor Cst, and an emission control signal line EM. For example, the first conductive layer pattern 530 may include the gates of the second reset transistor T1, the threshold compensation transistor T2, the driving transistor T3, the data write transistor T4, the second emission control transistor T5, the first emission control transistor T6, the first reset transistor T7, and the third reset transistor T8.

[0155] It should be noted that the dotted rectangular boxes in Figure 10B show the overlapping parts of the active layer pattern 520 and the first conductive layer pattern 530, that is, the channel region. As the channel region of each transistor, the active semiconductor layer on both sides of each channel region is conductively connected through processes such as ion doping to serve as the first and second electrodes of each transistor. The source and drain of the transistor can be symmetrical in structure, so the source and drain can be indistinguishable in physical structure. In the embodiments of the present disclosure, in order to distinguish the transistors, except for the gate as the control electrode, one of the electrodes is directly described as the first electrode and the other electrode is the second electrode, so the first and second electrodes of all or part of the transistors in the embodiments of the present disclosure can be interchangeable as needed.

[0156] For example, as shown in Figures 10B and 10C, the gate of the second reset transistor T1 can be the portion where the connection portion 533 overlaps with the active layer pattern 520, the gate of the threshold compensation transistor T2 can be the portion where the connection portion 532 overlaps with the active layer pattern 520, the gate of the data write transistor T4 can be the portion where the connection portion 534 overlaps with the active layer pattern 520, the gate of the second light-emitting control transistor T5 and the gate of the first light-emitting control transistor T6 can be the two portions where the light-emitting control signal line EM overlaps with the active layer pattern 520, and the gates of the first reset transistor T7 and the third reset transistor T8 can be the portions where the reset control signal line 535 overlaps with the active layer pattern 520.

[0157] 10D shows a second conductive layer pattern 540 on a side of the first conductive layer pattern 530 away from the base substrate 01. For example, as shown in FIG10D, the second conductive layer pattern 540 includes a second electrode 541 of the capacitor C.

[0158] 10E shows the second metal layer 300 on the side of the second conductive layer pattern 540 away from the base substrate 01. For example, as shown in FIG10E , the second metal layer 300 includes a reset control signal line 551, a connecting portion 554, a scan line 552, a connecting portion 553, a second signal line 310, a connecting portion 555, a transfer line 556, a reset power signal line 557, a reset power signal line 558, and a connecting portion 559.

[0159] 10F shows vias in the insulating layer 400 between the first metal layer 200 and the second metal layer 300. For example, as shown in FIG10F, the insulating layer 400 includes a first via 410, a second via 420, and a third via 430.

[0160] FIG10G shows the first metal layer 200. For example, as shown in FIG2A and FIG9 to FIG10G, the reset control signal line 551 is connected to the connection portion 533, the data line 210 is connected to the second electrode of the data write transistor T4 through the connection portion 554 and the second via 420, the scan line 552 is connected to the connection portion 532 and the connection portion 534, the connection portion 553 connects the first electrode 531 of the capacitor Cst to the power signal line 220, the connection portion 555 connects the second electrode of the third reset transistor T8 to the second electrode of the driving transistor T3, the adapter line 556 is connected to other signal lines 240, the reset power signal line 558 is connected to the first electrode of the third reset transistor T8, and the first connection portion 230 is connected to the second electrode of the first light emission control transistor T6 through the third via 430 and the connection portion 559.

[0161] Figure 11 is an equivalent circuit diagram of a pixel circuit included in the display substrate shown in Figure 7. Figures 12 and 13 are schematic diagrams of two film layers in the display substrate, respectively.

[0162] The pixel circuit shown in FIG11 differs from the pixel circuit shown in FIG9 in the number of transistors. The pixel circuit shown in FIG11 has a 7T1C structure, i.e., including seven transistors and one capacitor. T1 through T7 in the pixel circuit shown in FIG11 can have the same electrical connection relationship as T1 through T7 in the pixel circuit shown in FIG9 , and thus will not be further described here.

[0163] Figure 12 is a schematic diagram of an active layer pattern in a display substrate, and Figure 13 is a schematic diagram of a second metal layer in the display substrate. The active layer pattern shown in Figure 12 differs from the active layer pattern shown in Figure 10B in that Figure 12 does not include the active pattern for the third reset transistor T8. The second metal layer 300 shown in Figure 13 differs from the second metal layer 300 shown in Figure 10E in that Figure 12 does not include the connecting portion 555. The other film layers in the display substrate including the film layers shown in Figures 12 and 13 can have the same features as the other film layers in the display substrate shown in Figures 10A to 10G, and will not be further described here.

[0164] It should be noted that, in addition to the 8T1C (i.e., eight transistors and one capacitor) structure shown in FIG9 and the 7T1C structure shown in FIG11 , each pixel circuit may also be a structure including other numbers of transistors and other numbers of capacitors, such as a 7T2C structure, a 6T1C structure, a 6T2C structure, a 9T2C structure, or an LTPO 7T or 8T. The embodiments of the present disclosure are not limited to this.

[0165] Figure 14 is a schematic block diagram of a display device according to another embodiment of the present disclosure. As shown in Figure 14, a display device provided by an embodiment of the present disclosure includes any of the above-mentioned display substrates.

[0166] For example, the display device further includes a cover plate located on the light-emitting side of the display substrate.

[0167] For example, the display device can be a display device such as an organic light emitting diode display device, as well as any product or component with a display function, such as a television, digital camera, mobile phone, watch, tablet computer, laptop computer, navigator, etc. that includes the display device, but this embodiment is not limited to this.

[0168] In the display device provided by the present disclosure, by setting the long side of the light-emitting area of ​​the first color sub-pixel to intersect with the extension direction of the data line, the metal pad layer that is arranged in the same layer as the data line and transmits the power signal is set to include a first overlapping portion that overlaps with the light-emitting area of ​​the sub-pixel. The first overlapping portion is symmetrically distributed with respect to the center line of the light-emitting area of ​​the sub-pixel, and the area of ​​the first overlapping portion accounts for more than 60% of the area of ​​the light-emitting area. This improves the flatness and symmetrical distribution effect of the portion of the film layer located in the light-emitting area, which is beneficial to improving the flatness of the electrode of the sub-pixel to improve color deviation and improve the display quality of the display device.

[0169] There are a few points to note:

[0170] (1) The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures can refer to general designs.

[0171] (2) In the absence of conflict, features in the same embodiment and different embodiments of the present disclosure may be combined with each other.

[0172] The foregoing description is merely an exemplary embodiment of the present disclosure and is not intended to limit the scope of protection of the present disclosure. The scope of protection of the present disclosure is determined by the appended claims.

Claims

1. A display substrate, comprising: substrate; A plurality of sub-pixels are located on the base substrate, and the plurality of sub-pixels include at least a first color sub-pixel; a first metal layer, located on the base substrate, the first metal layer comprising a plurality of data lines, and the plurality of data lines are arranged along a first direction; The light-emitting area of ​​the first color sub-pixel includes a first side extending along the first direction and a second side extending along the second direction, the length of the first side is greater than the length of the second side, and the first direction intersects the second direction; The first metal layer further includes a metal pad layer located at least between adjacent data lines, wherein the metal pad layer includes a first overlapping portion that overlaps with a light-emitting area of ​​at least one sub-pixel in a direction perpendicular to the base substrate, the first overlapping portion being a continuous structure, symmetrically distributed with respect to a first center line of the light-emitting area of ​​the at least one sub-pixel extending along the second direction, and an area of ​​the first overlapping portion accounting for more than 60% of an area of ​​the light-emitting area; The metal pad layer is configured to transmit a power signal.

2. The display substrate according to claim 1, wherein The first overlapping portions are symmetrically distributed relative to a second center line of the light emitting area of ​​the at least one sub-pixel extending along the first direction.

3. The display substrate according to claim 1 or 2, wherein: The length of the first side is greater than the maximum dimension of the metal pad layer in the first direction. In the direction perpendicular to the base substrate, the light-emitting area of ​​the same first color sub-pixel overlaps with a metal pad layer and two data lines, and the two parts where the two data lines overlap with the light-emitting area of ​​the same first color sub-pixel are symmetrically distributed relative to the first center line.

4. The display substrate according to any one of claims 1 to 3, wherein: The plurality of sub-pixels further include a second color sub-pixel, and the area of ​​the first overlapping portion accounts for more than 90% of the area of ​​the light-emitting region of the second color sub-pixel overlapped therewith.

5. The display substrate according to claim 4, wherein: The plurality of sub-pixels further include a third color sub-pixel, and the area of ​​the first overlapping portion accounts for more than 90% of the area of ​​the light-emitting area of ​​the third color sub-pixel overlapped therewith; The area of ​​the first overlapping portion is smaller than the light emitting area of ​​the first color sub-pixel overlapping with it. area; The first color sub-pixel is a blue sub-pixel, one of the second color sub-pixel and the third color sub-pixel is a red sub-pixel, and the other is a green sub-pixel. The display substrate according to claim 5 , wherein: The plurality of sub-pixels include a plurality of sub-pixel columns arranged along the first direction, the plurality of sub-pixel columns include a plurality of first sub-pixel columns and a plurality of second sub-pixel columns, and two first sub-pixel columns are arranged between two adjacent second sub-pixel columns; The first sub-pixel column includes a plurality of second color sub-pixels and a plurality of third color sub-pixels arranged along the second direction, and the second sub-pixel column includes a plurality of first color sub-pixels arranged along the second direction.

7. The display substrate according to claim 6, wherein: The plurality of second color sub-pixels and the plurality of third color sub-pixels are alternately arranged along the second direction, and the two first sub-pixel columns are two adjacent first sub-pixel columns, and the two sub-pixels arranged along the first direction in the two adjacent first sub-pixel columns are sub-pixels of the same color.

8. The display substrate according to claim 6, wherein: In the same first sub-pixel column, two second-color sub-pixels constitute a first sub-pixel pair, and two third-color sub-pixels constitute a second sub-pixel pair. The first sub-pixel pairs and the second sub-pixel pairs are alternately arranged along the second direction, and the two first sub-pixel columns are two adjacent first sub-pixel columns. The two sub-pixels arranged along the first direction in the two adjacent first sub-pixel columns are sub-pixels of the same color.

9. The display substrate according to claim 5, wherein: The multiple sub-pixels include multiple sub-pixel columns arranged along the first direction, the multiple sub-pixel columns include a third sub-pixel column, a fourth sub-pixel column and a fifth sub-pixel column arranged sequentially and repeatedly, the third sub-pixel column includes the second color sub-pixels and the third color sub-pixels arranged alternately along the second direction, the fourth sub-pixel column includes the first color sub-pixels and the second color sub-pixels arranged alternately along the second direction, and the fifth sub-pixel column includes the first color sub-pixels and the third color sub-pixels arranged alternately along the second direction.

10. The display substrate according to any one of claims 5 to 8, wherein: The orthographic projection of the light-emitting area of ​​the first color sub-pixel on the straight line extending along the second direction is a first orthographic projection, the orthographic projection of the light-emitting area of ​​the second color sub-pixel on the straight line is a second orthographic projection, and the orthographic projection of the light-emitting area of ​​the third color sub-pixel on the straight line is a third orthographic projection, and the same first orthographic projection only overlaps with one of the second orthographic projection and the third orthographic projection arranged along the second direction.

11. The display substrate according to any one of claims 5 to 10, wherein: The length of the side of the light emitting area of ​​the second color subpixel extending along the first direction and the length of the side of the light emitting area of ​​the third color subpixel extending along the first direction are both shorter than the length of the first side of the first color subpixel.

12. The display substrate according to any one of claims 1 to 11, further comprising: a second metal layer, located between the first metal layer and the base substrate; an insulating layer, located between the first metal layer and the second metal layer, In which, the metal pad layer includes a first signal line, the second metal layer includes multiple second signal lines, the multiple second signal lines are arranged along the second direction, and the second signal line is electrically connected to the first signal line through a first via in the insulating layer, and the orthographic projection of the first via on the base substrate does not overlap with the orthographic projection of the light-emitting area of ​​any sub-pixel on the base substrate.

13. The display substrate according to claim 12, wherein: The second metal layer includes a second overlapping portion overlapping the light emitting area of ​​the at least one sub-pixel, and the second overlapping portion is symmetrically distributed with respect to the first center line.

14. The display substrate according to any one of claims 1 to 5, wherein: Each of the sub-pixels includes a first electrode, a light-emitting functional layer, and a second electrode stacked in sequence along a direction perpendicular to the base substrate, wherein the first electrode is located between the light-emitting functional layer and the base substrate; The metal pad layer extends along the second direction, and the metal pad layer includes a plurality of hollow portions, and two portions of the metal pad layer located on both sides of the same hollow portion in the second direction are connected to each other; Along a direction perpendicular to the base substrate, a portion of the first electrode that does not overlap with the light-emitting area overlaps with the hollow portion.

15. The display substrate according to claim 14, wherein: The plurality of sub-pixels include a plurality of sub-pixel columns arranged along the first direction, each sub-pixel column includes sub-pixels arranged along the second direction, Along a direction perpendicular to the base substrate, the first electrodes of two adjacent sub-pixels arranged along the second direction overlap with the same hollow portion.

16. The display substrate according to claim 15, wherein: The sub-pixel also includes a pixel circuit, which includes a light-emitting control transistor located between the first electrode of the sub-pixel and the base substrate. The first metal layer also includes a first connecting portion located in the hollow portion, and the first electrode of the sub-pixel is electrically connected to the light-emitting control transistor through the first connecting portion.

17. The display substrate according to claim 7 or 8, wherein: The multiple data lines include a first data line electrically connected to the first color sub-pixel, a second data line electrically connected to the second color sub-pixel, and a third data line electrically connected to the third color sub-pixel. The multiple data lines include a plurality of data line groups arranged along the first direction, and each data line group includes the second data line, the third data line, the first data line, the first data line, the second data line, and the third data line arranged in sequence along the first direction.

18. The display substrate according to claim 9, wherein: The multiple data lines include a first data line electrically connected to the first color sub-pixel, a second data line electrically connected to the second color sub-pixel, and a third data line electrically connected to the third color sub-pixel. The multiple data lines include a plurality of data line groups arranged along the first direction, and each data line group includes the second data line, the third data line, the first data line, the second data line, the third data line, and the first data line arranged in sequence along the first direction.

19. The display substrate according to claim 12 or 13, wherein: The second metal layer further includes a plurality of second connection parts, the data line includes a plurality of protrusions, and the protrusions are electrically connected to the second connection parts through second via holes in the insulating layer; An edge of the metal pad layer extending along the second direction includes a notch, and the protrusion is arranged opposite to the notch.

20. The display substrate according to claim 19, wherein The metal pad layer includes a plurality of hollow portions, and two portions of the metal pad layer located on both sides of the same hollow portion in the second direction are connected to each other; A straight line extending along the first direction and passing through the hollow portion does not pass through the notch.

21. The display substrate according to claim 20, wherein: The ratio of the widths of the metal pad layer at other locations except the hollow portion and the notch is 0.9 to 1.

1.

22. The display substrate according to claim 20 or 21, wherein: A straight line passing through an edge of the hollow portion and extending along the second direction does not pass through the notch.

23. The display substrate according to claim 16, wherein Two first connecting portions are provided in the same hollow portion, and the two first connecting portions are symmetrically distributed relative to a center line of the metal pad layer extending along the second direction.

24. A display device comprising the display substrate according to any one of claims 1 to 23.

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