A display substrate and related device

Abstract

The present disclosure provides a display substrate and related devices, belonging to the field of display technology. Among them, the display substrate includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels. In a first direction, the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, and the first sub-pixel rows and the second sub-pixel rows are alternately arranged in a second direction. The center connection line of two first sub-pixels and two third sub-pixels distributed in two adjacent rows and two columns is a first virtual quadrilateral. The two first sub-pixels are located at two opposite vertices of the first virtual quadrilateral, the second sub-pixel is located inside the first virtual quadrilateral, and the first virtual quadrilateral includes two 90° interior angles and two non-90° interior angles. The technical solution of the present disclosure can improve the resolution of the display device.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a display substrate, an organic light-emitting diode (OLED) display panel, a high-precision metal mask, and a display device. Background Art

[0002] Organic light-emitting diode (OLED) display devices are one of the hotspots in the research field of flat panel displays today. Compared with liquid crystal displays, OLED display devices have the advantages of low power consumption, low production cost, self-emission, wide viewing angle, and fast response speed. Currently, in the field of flat panel displays, OLED display devices have begun to replace traditional liquid crystal displays (LCDs).

[0003] The structure of an OLED display device mainly includes: a substrate, and pixels arranged in a matrix on the substrate. Among them, each pixel generally forms an organic light-emitting structure at a corresponding pixel position on the array substrate through an organic material using an evaporation coating technology through a high-precision metal mask.

[0004] The opening size of the high-precision metal mask directly determines the size of the sub-pixels. However, due to limitations in the manufacturing process of the high-precision metal mask, it is difficult to obtain a high-resolution display device on the current display substrate. Summary of the Invention

[0005] The technical problem to be solved by the present disclosure is to provide a display substrate, an OLED display panel, a high-precision metal mask, and a display device, which can improve the resolution of the display device.

[0006] To solve the above technical problem, the embodiments of the present disclosure provide the following technical solutions:

[0007] On the one hand, a display substrate is provided, including a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels.

[0008] In a first direction, the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, the first sub-pixel rows and the second sub-pixel rows are alternately arranged in a second direction. The center connection line of two first sub-pixels and two third sub-pixels in two adjacent rows and two columns is a first virtual quadrilateral. The two first sub-pixels are located at two opposite vertices of the first virtual quadrilateral, the second sub-pixel is located inside the first virtual quadrilateral, the first virtual quadrilateral includes two 90° interior angles and two non-90° interior angles, and the two non-90° interior angles include a first interior angle and a second interior angle.

[0009] For the same first virtual quadrilateral, the distance between the centers of the first sub-pixel at the first inner angle and the third sub-pixel at the second inner angle on a first straight line is x, the first straight line is perpendicular to the common side of the two 90° inner angles, and the value range of the first inner angle a is (h - 10°, h + 10°), where h is calculated using one of the following formulas:

[0010]

[0011]

[0012] Where P is the distance between the centers of the two closest second sub-pixels in the second sub-pixel row.

[0013] In some embodiments, the value range of x is 1 - 10 um.

[0014] In some embodiments, the first inner angle a is greater than or equal to 70° and less than 90°.

[0015] In some embodiments, the line connecting the centers of two adjacent first sub-pixels in the first direction is parallel to the first direction, and the line connecting the centers of two adjacent third sub-pixels in the first direction is parallel to the first direction;

[0016] The line connecting the centers of the first sub-pixel and the third sub-pixel adjacent in the second direction is parallel to the second direction.

[0017] In some embodiments, the distance between two adjacent first sub-pixels in the first direction is equal to the distance between two adjacent first sub-pixels in the second direction; and / or

[0018] The distance between two adjacent third sub-pixels in the first direction is equal to the distance between two adjacent third sub-pixels in the second direction.

[0019] In some embodiments, the first direction and the second direction are substantially perpendicular, the first direction is one of the row direction and the column direction, and the second direction is the other of the row direction and the column direction.

[0020] In some embodiments, four first virtual quadrilaterals arranged in two columns and two rows form a second virtual polygon in a co-edge manner, and the second virtual polygon includes four second sub-pixels, five first sub-pixels, and four third sub-pixels;

[0021] The four second sub-pixels are respectively located within the four first virtual quadrilaterals, one of the first sub-pixels is surrounded by the other four first sub-pixels, the other four first sub-pixels and the four third sub-pixels are respectively located on the edges or vertices of the second virtual polygon, and the four first sub-pixels and the four third sub-pixels located on the edges or vertices of the second virtual polygon are alternately distributed in a clockwise and counterclockwise order along the edges of the second virtual polygon; or

[0022] The second virtual polygon includes four second sub-pixels, five third sub-pixels, and four first sub-pixels;

[0023] The four second sub-pixels are respectively located in the four first virtual quadrilaterals, one third sub-pixel is surrounded by the other four third sub-pixels, the other four third sub-pixels and the four first sub-pixels are respectively located on the edges or vertices of the second virtual polygon, and the four third sub-pixels and the four first sub-pixels located on the edges or vertices of the second virtual polygon are alternately distributed in a clockwise and counterclockwise order along the edges of the second virtual polygon.

[0024] In some embodiments, the center of a first sub-pixel surrounded by four first sub-pixels does not coincide with the center of a quadrilateral formed by the four first sub-pixels; the center of a third sub-pixel surrounded by four third sub-pixels does not coincide with the center of a quadrilateral formed by the four third sub-pixels.

[0025] In some embodiments, the display substrate includes multiple pixel repetition units, and a pixel repetition unit includes two first sub-pixels and two third sub-pixels located in the same first virtual quadrilateral, and also includes four second sub-pixels located in the same second virtual polygon as one of the two first sub-pixels and surrounding the first sub-pixel.

[0026] In some embodiments, the second virtual polygon is a rectangle.

[0027] In some embodiments, a line connecting centers of at least some of the second sub-pixels arranged along the first direction is substantially parallel to the first direction, and a line connecting centers of at least some of the second sub-pixels arranged along the second direction is substantially parallel to the second direction.

[0028] In some embodiments, the second sub-pixels have the same shape and area.

[0029] In some embodiments, within at least one of the first virtual quadrilaterals, a distance between the second sub-pixel and the first of the third sub-pixels is L1, a distance between the second sub-pixel and the second of the third sub-pixels is L2, and a distance between the second sub-pixel and both of the first sub-pixels is L1.

[0030] Or

[0031] Within at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and two of the third sub-pixels, and the distance between two of the first sub-pixels are both L1;

[0032] Or

[0033] Within at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and two of the third sub-pixels is both L1, the distance between the second sub-pixel and the first of the first sub-pixels is L1, and the distance between the second sub-pixel and the second of the first sub-pixels is L2;

[0034] Or

[0035] Within at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and two of the third sub-pixels is both L2, and the distance between the second sub-pixel and two of the first sub-pixels is both L1;

[0036] Wherein, L2 is greater than L1, and the distance between sub-pixels is the minimum distance between the sides of the sub-pixels.

[0037] In some embodiments, within at least one of the first virtual quadrilaterals, the center of the second sub-pixel does not coincide with the center of the first virtual quadrilateral.

[0038] In some embodiments, the included angle between the line connecting the centers of two adjacent second sub-pixels in the second direction and the second direction is greater than or equal to 0° and less than 90°.

[0039] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include a first virtual quadrilateral A and a first virtual quadrilateral B,

[0040] In the first virtual quadrilateral A, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R1, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R3;

[0041] In the first virtual quadrilateral B, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R2, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R4;

[0042] R1 is not equal to R2, and / or, R3 is not equal to R4.

[0043] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include a first virtual quadrilateral A and a first virtual quadrilateral B,

[0044] The first virtual quadrilateral A includes a first side and a third side parallel to the second direction;

[0045] The first virtual quadrilateral B includes a second side and a fourth side parallel to the second direction;

[0046] The first side and the second side are on the same straight line, and the third side and the fourth side are on the same straight line.

[0047] The length of the first side is less than the length of the second side, the length of the fourth side is less than the length of the third side, the length of the first side is equal to the length of the fourth side, and the length of the second side is equal to the length of the third side.

[0048] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include the first virtual quadrilateral A and the first virtual quadrilateral B.

[0049] In the first virtual quadrilateral A, the distance between the second sub-pixel and the two first sub-pixels is both L3, and the distance between the second sub-pixel and the two third sub-pixels is both L4;

[0050] In the first virtual quadrilateral B, the distance between the second sub-pixel and the two first sub-pixels is both L3, and the distance between the second sub-pixel and the two third sub-pixels is both L4;

[0051] Wherein, the distance between sub-pixels is the minimum distance between the sides of the sub-pixels.

[0052] In some embodiments, the centers of the first sub-pixel and the third sub-pixel in the nth row of the first sub-pixels are on the same straight line, and the centers of the first sub-pixel and the third sub-pixel in the (n + 1)th row of the first sub-pixels are on different straight lines.

[0053] In some embodiments, in the (n + 1)th row of the first sub-pixels, the centers of all the first sub-pixels are on the second straight line, and the centers of all the third sub-pixels are on the third straight line, and the second straight line and the third straight line are different straight lines.

[0054] In some embodiments, in the second direction perpendicular to the first direction, the centers of the first sub-pixel and the third sub-pixel in the same sub-pixel column are on the same straight line.

[0055] In some embodiments, the shapes and areas of the first sub-pixels are the same, and the shapes and areas of the third sub-pixels are the same.

[0056] In some embodiments, the area of a single first sub-pixel is S, the area of a single second sub-pixel is f*S, and the area of a single third sub-pixel is g*S, where 0.5 ≤ f ≤ 0.8 and 1 ≤ g ≤ 2.2.

[0057] In some embodiments, the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel include any one of a polygon, a circle, or an ellipse.

[0058] In some embodiments, the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are selected from any one of a quadrilateral, a pentagon, a hexagon, an octagon, a quadrilateral with rounded corners, a hexagon with rounded corners, or an octagon with rounded corners, a circle, or an ellipse.

[0059] In some embodiments, the first sub-pixel is a red sub-pixel, the third sub-pixel is a blue sub-pixel, and the second sub-pixel is a green sub-pixel; or, the first sub-pixel is a blue sub-pixel, the third sub-pixel is a red sub-pixel, and the second sub-pixel is a green sub-pixel; or, the first sub-pixel is a green sub-pixel, the third sub-pixel is a red sub-pixel, and the second sub-pixel is a blue sub-pixel; or, the first sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, and the second sub-pixel is a red sub-pixel.

[0060] The embodiments of the present disclosure further provide an organic electroluminescent display panel, including the display substrate as described above.

[0061] In some embodiments, a pixel defining layer is further included. The pixel defining layer includes a plurality of pixel defining layer openings. Each of the first sub-pixels, each of the second sub-pixels, and each of the third sub-pixels respectively corresponds to one pixel defining layer opening. The shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are substantially the same as the shapes of the openings of the corresponding pixel defining layer.

[0062] In some embodiments, the first sub-pixel includes multiple film layers, and at least part of the multiple film layers of the first sub-pixel covers the area outside the pixel defining layer opening; and / or, the second sub-pixel includes multiple film layers, and at least part of the multiple film layers of the second sub-pixel covers the area outside the pixel defining layer opening; and / or, the third sub-pixel includes multiple film layers, and at least part of the multiple film layers of the third sub-pixel covers the area outside the pixel defining layer opening.

[0063] The embodiments of the present disclosure further provide a display device, including the organic electroluminescent display panel as described above.

[0064] The embodiments of the present disclosure also provide a high-precision metal mask plate for manufacturing the display substrate as described above, which includes: a plurality of opening regions, and the plurality of opening regions include a first opening region corresponding to the position of the first sub-pixel, or a second opening region corresponding to the position of the second sub-pixel, or a third opening region corresponding to the position of the third sub-pixel.

[0065] In some embodiments, the first sub-pixel includes multiple film layers, the second sub-pixel includes multiple film layers, the third sub-pixel includes multiple film layers, the shape of the first opening region is substantially the same as the shape and distribution of at least one film layer in the first sub-pixel, the shape of the third opening region is substantially the same as the shape and distribution of at least one film layer in the third sub-pixel, and the shape and distribution of the second opening region are substantially the same as the shape and distribution of at least one film layer in the second sub-pixel. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] Figure 1 is a schematic cross-sectional structure diagram of the display substrate according to the embodiments of the present disclosure;

[0067] Figures 2 - 9 is a schematic diagram of the display substrate according to the embodiments of the present disclosure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0068] To make the technical problems, technical solutions, and advantages to be solved by the embodiments of the present disclosure clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0069] The embodiments of the present disclosure provide a display substrate, an organic electroluminescent display panel, a high-precision metal mask plate, and a display device, which can improve the resolution of the display device.

[0070] The embodiments of the present disclosure provide a display substrate, which includes a plurality of first sub-pixels, a plurality of second sub-pixels, and a plurality of third sub-pixels.

[0071] In a first direction, the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels form a plurality of second sub-pixel rows, the first sub-pixel rows and the second sub-pixel rows are alternately arranged in a second direction. The center line connecting two first sub-pixels and two third sub-pixels in two adjacent rows and two columns is a first virtual quadrilateral. The two first sub-pixels are located at two opposite vertices of the first virtual quadrilateral, the second sub-pixel is located inside the first virtual quadrilateral, the first virtual quadrilateral includes two 90° interior angles and two non-90° interior angles, and the two non-90° interior angles include a first interior angle and a second interior angle.

[0072] For the same first virtual quadrilateral, the distance between the center of the first sub-pixel at the first inner angle and the center of the third sub-pixel at the second inner angle on the first straight line is x. The first straight line is perpendicular to the common side of the two 90° inner angles. The value range of the first inner angle a is (h - 10°, h + 10°), and h is calculated using one of the following formulas:

[0073]

[0074]

[0075] Where P is the distance between the centers of the two closest second sub-pixels in the second sub-pixel row.

[0076] The above formulas are approximate equal relationships. That is, the angle of a can have a certain deviation. For example, it can float up and down 10° based on the calculated result h, or float up and down 5° based on the calculated result h.

[0077] P is the approximate distance between the centers of two adjacent second sub-pixels. The second sub-pixels in the second sub-pixel row can be evenly distributed, that is, the distance between every two adjacent second sub-pixels is approximately equal, or there can be a certain deviation, such as a difference less than 5 microns. Here, P can also be the average distance between the spacings of adjacent second sub-pixels in the same sub-pixel row. In addition, P is also approximately equal to the distance between the center of the first sub-pixel and the center of the adjacent third sub-pixel in the same row, such as a difference less than 5 microns. Or it is half of the distance between the centers of two adjacent first sub-pixels in the same sub-pixel row; or it is half of the distance between the centers of two adjacent third sub-pixels in the same sub-pixel row.

[0078] In the above solution, compared with the existing display substrate, the display substrate provided by the embodiments of the present disclosure can closely arrange the first sub-pixel, the second sub-pixel, and the third sub-pixel under the same process conditions, so as to improve the resolution of the display device under the condition of meeting the minimum pixel pitch. And, the second sub-pixels are staggered, so that in the case of the same aperture ratio, the distance between the openings of the fine metal mask plate used to manufacture the second sub-pixels can be increased, improving the manufacturing margin of the fine metal mask plate and achieving a higher resolution; in addition, by staggering the arrangement of the first sub-pixel, the second sub-pixel, and the third sub-pixel, the distribution of the brightness center can be made more uniform, improving the display effect of the display device.

[0079] In some embodiments, a first sub-pixel includes a first effective light-emitting region, a second sub-pixel includes a second effective light-emitting region, a third sub-pixel includes a third effective light-emitting region, and the area of the second effective light-emitting region < the first effective light-emitting region < the third effective light-emitting region. On a display substrate, the total area of all the third effective light-emitting regions included in the third sub-pixel > the total area of all the second effective light-emitting regions included in the second sub-pixel > the total area of all the first effective light-emitting regions included in the first sub-pixel. In some embodiments, each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are separated. In some embodiments, each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are defined by a plurality of separated openings formed in a pixel defining layer. In some embodiments, each of the first effective light-emitting regions is defined by a light-emitting layer in the corresponding first sub-pixel, which is located between opposite anodes and cathodes in the direction perpendicular to the substrate and is driven to emit light. In some embodiments, each of the second effective light-emitting regions is defined by a light-emitting layer in the corresponding second sub-pixel, which is located between opposite anodes and cathodes in the direction perpendicular to the substrate and is driven to emit light. In some embodiments, each of the third effective light-emitting regions is defined by a light-emitting layer in the corresponding third sub-pixel, which is located between opposite anodes and cathodes in the direction perpendicular to the substrate and is driven to emit light. In some embodiments, each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are defined by the corresponding light-emitting layer and an electrode (anode or cathode) or a part of the electrode that transports carriers (holes or electrons) with the corresponding light-emitting layer. In some embodiments, each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are defined by at least a part of the cathode and at least a part of the anode whose orthographic projections on the substrate overlap, and at least a part of the cathode and at least a part of the anode do not overlap with the orthographic projection of the first insulating layer on the substrate, and the first insulating layer is located between the cathode and the anode in the direction perpendicular to the substrate. For example, the first insulating layer includes a pixel defining layer. In some embodiments, each of the first sub-pixels, each of the second sub-pixels, and each of the third sub-pixels respectively include a first electrode, a light-emitting layer located on the side of the first electrode away from the substrate, and a second electrode located on the side of the light-emitting layer away from the first electrode. In the direction perpendicular to the substrate, a second insulating layer is further provided between the first electrode and the light-emitting layer, and / or between the second electrode and the light-emitting layer. The second insulating layer overlaps with the projection of the first electrode or the second electrode on the substrate, and the second insulating layer has an opening. The opening of the second insulating layer on the side facing the light-emitting layer can expose at least a part of the first electrode or the second electrode, so that it can contact the light-emitting layer or the functional layer that assists in light emission. Each of the first effective light-emitting regions, each of the second effective light-emitting regions, and each of the third effective light-emitting regions are defined by the part of the first electrode or the second electrode that contacts the light-emitting layer or the functional layer that assists in light emission. In some embodiments, the second insulating layer includes a pixel defining layer.In some embodiments, the functional layer for auxiliary light emission may be any one or more of a hole injection layer, a hole transport layer, an electron transport layer, a hole blocking layer, an electron blocking layer, an electron injection layer, an auxiliary light emitting layer, an interface improvement layer, an anti-reflection layer, etc. In some embodiments, the first electrode may be an anode and the second electrode may be a cathode. In some embodiments, the first electrode may include at least two stacked layers of indium tin oxide (ITO) and silver (Ag), such as a three-layer stack of ITO, Ag, and ITO. In some embodiments, the second electrode may include any one or more of magnesium (Mg), Ag, ITO, indium zinc oxide (IZO), etc., such as a mixed layer or alloy layer of Mg and Ag.

[0080] Each sub-pixel includes a light emitting layer. Each first sub-pixel includes a first-color light emitting layer located within the opening and on the pixel defining layer. Each second sub-pixel includes a second-color light emitting layer located within the opening and on the pixel defining layer. Each third sub-pixel includes a third-color light emitting layer located within the opening and on the pixel defining layer.

[0081] In some exemplary embodiments, the preparation process of the display substrate in this embodiment may include the following steps (1) to step (9). In this exemplary embodiment, please refer to Figure 1 , and take the flexible display substrate with a top emission structure as an example for illustration.

[0082] (1) Prepare a substrate on a glass carrier.

[0083] In some exemplary embodiments, the substrate substrate 10 may be a flexible substrate substrate, for example, including a first flexible material layer, a first inorganic material layer, a semiconductor layer, a second flexible material layer, and a second inorganic material layer stacked on a glass carrier 1. The materials of the first flexible material layer and the second flexible material layer are polyimide (PI), polyethylene terephthalate (PET), or a surface-treated polymer soft film and other materials. The materials of the first inorganic material layer and the second inorganic material layer are silicon nitride (SiNx) or silicon oxide (SiOx), etc., which are used to improve the water and oxygen resistance of the substrate substrate. The first inorganic material layer and the second inorganic material layer are also called barrier layers. The material of the semiconductor layer is amorphous silicon (a-si). In some exemplary embodiments, taking the stacked structure PI1 / Barrier1 / a-si / PI2 / Barrier2 as an example, its preparation process includes: first coating a layer of polyimide on the glass carrier 1, and forming a first flexible (PI1) layer after curing into a film; then depositing a barrier thin film on the first flexible layer to form a first barrier (Barrier1) layer covering the first flexible layer; then depositing a layer of amorphous silicon thin film on the first barrier layer to form an amorphous silicon (a-si) layer covering the first barrier layer; then coating another layer of polyimide on the amorphous silicon layer, and forming a second flexible (PI2) layer after curing into a film; then depositing a barrier thin film on the second flexible layer to form a second barrier (Barrier2) layer covering the second flexible layer, thus completing the preparation of the substrate substrate 10.

[0084] (2), Prepare a driving structure layer on the substrate substrate. The driving structure layer includes a plurality of driving circuits, and each driving circuit includes a plurality of transistors and at least one storage capacitor, such as 2T1C, 3T1C, or 7T1C design.

[0085] In some exemplary embodiments, the preparation process of the driving structure layer can be referred to the following description. Taking the preparation process of the driving circuit of the first sub-pixel 21 as an example for illustration.

[0086] Deposit a first insulating thin film and an active layer thin film on the substrate substrate 10 in sequence, and pattern the active layer thin film through a patterning process to form a first insulating layer 11 covering the entire substrate substrate 10, and an active layer pattern provided on the first insulating layer 11. The active layer pattern at least includes a first active layer.

[0087] Subsequently, deposit a second insulating thin film and a first metal thin film in sequence, and pattern the first metal thin film through a patterning process to form a second insulating layer 12 covering the active layer pattern, and a first gate metal layer pattern provided on the second insulating layer 12. The first gate metal layer pattern at least includes a first gate electrode and a first capacitor electrode.

[0088] Subsequently, a third insulating film and a second metal film are sequentially deposited, and the second metal film is patterned through a patterning process to form a third insulating layer 13 covering the first gate metal layer and a second gate metal layer pattern provided on the third insulating layer 13. The second gate metal layer pattern at least includes a second capacitor electrode, and the position of the second capacitor electrode corresponds to the position of the first capacitor electrode.

[0089] Subsequently, a fourth insulating film is deposited, and the fourth insulating film is patterned through a patterning process to form a fourth insulating layer 14 pattern covering the second gate metal layer. At least two first vias are formed in the fourth insulating layer 14, and the fourth insulating layer 14, the third insulating layer 13, and the second insulating layer 12 within the two first vias are etched away to expose the surface of the first active layer.

[0090] Subsequently, a third metal film is deposited, and the third metal film is patterned through a patterning process to form a source-drain metal layer pattern on the fourth insulating layer 14. The source-drain metal layer at least includes a first source electrode and a first drain electrode located in the display area. The first source electrode and the first drain electrode can be respectively connected to the first active layer through the first vias.

[0091] In the driving circuit of the first sub-pixel 21 in the display area, the first active layer, the first gate electrode, the first source electrode, and the first drain electrode can form a first transistor 210, and the first capacitor electrode and the second capacitor electrode can form a first storage capacitor 212. In the above preparation process, the driving circuits of the second sub-pixel 22 and the driving circuit of the third color sub-pixel 23 can be formed simultaneously.

[0092] In some exemplary embodiments, the first insulating layer 11, the second insulating layer 12, the third insulating layer 13, and the fourth insulating layer 14 are made of any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON), and can be a single layer, a multi-layer, or a composite layer. The first insulating layer 11 is referred to as a buffer layer for improving the water and oxygen resistance of the substrate. The second insulating layer 12 and the third insulating layer 13 are referred to as gate insulator (GI) layers. The fourth insulating layer 14 is referred to as an interlayer dielectric (ILD) layer. The first metal thin film, the second metal thin film, and the third metal thin film are made of a metal material, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or an alloy material of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb), and can be a single-layer structure or a multi-layer composite structure, such as Ti / Al / Ti, etc. The active layer thin film is made of one or more materials such as amorphous indium gallium zinc oxide material (a-IGZO), zinc oxide nitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), hexathiophene, polythiophene, etc. That is, the present disclosure is applicable to transistors manufactured based on oxide technology, silicon technology, and organic technology.

[0093] (3), Form a planarization layer on the substrate on which the foregoing pattern is formed.

[0094] In some exemplary embodiments, an organic material planar thin film is coated on the substrate 10 on which the foregoing pattern is formed to form a planarization (PLN) layer 15 covering the entire substrate 10, and through a mask, exposure, and development process, a plurality of second vias K2 are formed on the planarization layer 15 in the display area. The planarization layer 15 within the plurality of second vias K2 is developed away, respectively exposing the surfaces of the first drain electrodes of the first transistors 210 in the driving circuits of the first sub-pixels 21, the surfaces of the first drain electrodes of the first transistors in the driving circuits of the second sub-pixels 22, and the surfaces of the first drain electrodes of the first transistors in the driving circuits of the third color sub-pixels 23.

[0095] (4), On the substrate on which the foregoing pattern is formed, form a first electrode pattern. In some examples, the first electrode is a reflective anode.

[0096] In some exemplary embodiments, a conductive thin film is deposited on the substrate 10 on which the foregoing pattern is formed, and the conductive thin film is patterned through a patterning process to form a first electrode pattern. The first anode 213 of the first sub-pixel 21 is connected to the first drain electrode of the first transistor 210 through a second via K2. The second anode 223 of the second sub-pixel 22 is connected to the first drain electrode of the first transistor of the second sub-pixel 22 through a second via K2. The third anode 233 of the third color sub-pixel 23 is connected to the first drain electrode of the first transistor of the third color sub-pixel 23 through a second via K2.

[0097] In some examples, the first electrode may be made of a metal material, such as any one or more of magnesium (Mg), silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or an alloy material of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). It may be a single-layer structure or a multi-layer composite structure, such as Ti / Al / Ti, etc. Alternatively, it is a stack structure formed by a metal and a transparent conductive material, such as reflective materials like ITO / Ag / ITO, Mo / AlNd / ITO, etc.

[0098] (5) On the substrate on which the foregoing pattern is formed, a pixel definition (PDL, Pixel Definition Layer) layer pattern is formed.

[0099] In some exemplary embodiments, a pixel definition thin film is coated on the substrate 10 on which the foregoing pattern is formed, and a pixel definition layer pattern is formed through a mask, exposure, and development process. The pixel definition layer 30 in the display area includes a plurality of sub-pixel definition portions 302. A plurality of pixel definition layer openings 301 are formed between adjacent sub-pixel definition portions 302. The pixel definition layer 30 within the plurality of pixel definition layer openings 301 is developed away, respectively exposing at least a part of the surface of the first anode 213 of the first sub-pixel 21, at least a part of the surface of the second anode 223 of the second sub-pixel 22, and at least a part of the surface of the third anode 233 of the third color sub-pixel 23.

[0100] In some examples, the pixel definition layer 30 may be made of polyimide, acrylic, polyethylene terephthalate, or the like.

[0101] (6) On the substrate on which the foregoing pattern is formed, a post spacer (PS) pattern is formed.

[0102] In some exemplary embodiments, an organic material thin film is coated on the substrate 10 on which the foregoing pattern is formed, and the pattern of the spacer column 34 is formed through processes of masking, exposure, and development. The spacer column 34 can serve as a support layer and is configured to support the FMM during the evaporation process. In some examples, along the row arrangement direction of the sub-pixels, there is a repeating unit between two adjacent spacer columns 34. For example, the spacer column 34 can be located between adjacent first sub-pixels 21 and third color sub-pixels 23.

[0103] (7), An organic functional layer and a second electrode are sequentially formed on the substrate on which the foregoing pattern is formed. In some examples, the second electrode is a transparent cathode. The light-emitting element can emit light from the side away from the substrate 10 through the transparent cathode, realizing top emission. In some examples, the organic functional layer of the light-emitting element includes: a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer.

[0104] In some exemplary embodiments, the hole injection layer 241 and the hole transport layer 242 are sequentially formed by evaporation on the substrate 10 on which the foregoing pattern is formed using an open mask, and then the blue light-emitting layer 236, the green light-emitting layer 216, and the red light-emitting layer 226 are sequentially formed by evaporation using the FMM. Then, the electron transport layer 243, the cathode 244, and the optical coupling layer 245 are sequentially formed by evaporation using an open mask. The hole injection layer 241, the hole transport layer 242, the electron transport layer 243, and the cathode 244 are all common layers for multiple sub-pixels. In some examples, the organic functional layer may further include: a microcavity adjustment layer located between the hole transport layer and the light-emitting layer. For example, after forming the hole transport layer, the blue microcavity adjustment layer, the blue light-emitting layer, the green microcavity adjustment layer, the green light-emitting layer, the red microcavity adjustment layer, and the red light-emitting layer can be sequentially formed by evaporation using the FMM.

[0105] In some exemplary embodiments, the organic functional layer is formed within the sub-pixel region to connect the organic functional layer to the anode. The cathode is formed on the pixel definition layer and is connected to the organic functional layer.

[0106] In some exemplary embodiments, the cathode can be made of any one or more of magnesium (Mg), silver (Ag), aluminum (Al), or an alloy made of any one or more of the above metals, or a transparent conductive material, such as indium tin oxide (ITO), or a multi-layer composite structure of a metal and a transparent conductive material.

[0107] In some exemplary embodiments, a light coupling layer may be formed on a side of the cathode 244 away from the substrate 10. The light coupling layer may be a common layer for multiple sub-pixels. The light coupling layer may cooperate with the transparent cathode to increase light output. For example, the material of the light coupling layer may be a semiconductor material. However, this embodiment is not limited thereto.

[0108] (8), On the substrate on which the foregoing pattern is formed, form a packaging layer.

[0109] In some exemplary embodiments, on the substrate 10 on which the foregoing pattern is formed, a packaging layer is formed. The packaging layer may include a stacked first packaging layer 41, a second packaging layer 42, and a third packaging layer 43. The first packaging layer 41 is made of an inorganic material and covers the cathode 244 in the display area. The second packaging layer 42 is made of an organic material. The third packaging layer 43 is made of an inorganic material and covers the first packaging layer 41 and the second packaging layer 42. However, this embodiment is not limited thereto. In some examples, the packaging layer may adopt a five-layer structure of inorganic / organic / inorganic / organic / inorganic.

[0110] In some embodiments, the value range of x may be 1 - 10 um; further, the value range of x may be 2 - 7 um; or, the value range of x may be 2 - 8 um. For example, x may be 2 um, 3 um, 4 um, 5 um, 6 um, 7 um, or 8 um.

[0111] In some embodiments, the interior angle a is greater than or equal to 70° and less than 90°; further, the interior angle a is greater than or equal to 75° and less than 90°. For example, the value of a may be 86°, 82°, 83°, 84°, or 85°.

[0112] In some embodiments, the center line connecting two adjacent first sub-pixels in the first direction is parallel to the first direction, and the center line connecting two adjacent third sub-pixels in the first direction is parallel to the first direction;

[0113] The center line connecting the adjacent first sub-pixel and the third sub-pixel in the second direction is parallel to the second direction.

[0114] In some embodiments, the distance between two adjacent first sub-pixels in the first direction is equal to the distance between two adjacent first sub-pixels in the second direction; and / or

[0115] The distance between two adjacent third sub-pixels in the first direction is equal to the distance between two adjacent third sub-pixels in the second direction.

[0116] That is, the center connection lines of the four first sub-pixels arranged in two rows and two columns form a virtual square, and the center connection lines of the four third sub-pixels arranged in two rows and two columns form a virtual square. This can make the first sub-pixels and the third sub-pixels evenly arranged, make the distribution of the brightness center more uniform, and improve the display effect of the display device.

[0117] In some embodiments, the first direction and the second direction are substantially perpendicular, the first direction is one of the row direction and the column direction, and the second direction is the other of the row direction and the column direction.

[0118] In some embodiments, the four first virtual quadrilaterals arranged in two columns and two rows form a second virtual polygon in a co-edge manner. The second virtual polygon includes four second sub-pixels, five first sub-pixels, and four third sub-pixels;

[0119] The four second sub-pixels are respectively located within the four first virtual quadrilaterals. One first sub-pixel is surrounded by the other four first sub-pixels. The other four first sub-pixels and the four third sub-pixels are respectively located on the sides or vertices of the second virtual polygon, and along the clockwise and counterclockwise orders on the sides of the second virtual polygon, the four first sub-pixels and the four third sub-pixels located on the sides or vertices of the second virtual polygon are alternately distributed; or

[0120] The second virtual polygon includes four second sub-pixels, five third sub-pixels, and four first sub-pixels;

[0121] The four second sub-pixels are respectively located within the four first virtual quadrilaterals. One third sub-pixel is surrounded by the other four third sub-pixels. The other four third sub-pixels and the four first sub-pixels are respectively located on the sides or vertices of the second virtual polygon, and along the clockwise and counterclockwise orders on the sides of the second virtual polygon, the four third sub-pixels and the four first sub-pixels located on the sides or vertices of the second virtual polygon are alternately distributed.

[0122] The center connection lines of the four first sub-pixels located at the sides or vertices of the second virtual polygon are substantially a virtual parallelogram, and / or, the center connection lines of the four third sub-pixels located at the sides or vertices of the second virtual polygon are substantially a virtual parallelogram, and / or, the center connection lines of the four second sub-pixels located within the four first virtual quadrilaterals are substantially a virtual parallelogram.

[0123] In some embodiments, the center connection lines of the four first sub-pixels located at the edges or vertices of the second virtual polygon are approximately a virtual rectangle or a virtual square, and the center connection lines of the four third sub-pixels located at the edges or vertices of the second virtual polygon are approximately a virtual rectangle or a virtual square; the center connection lines of the four second sub-pixels located within the four first virtual quadrilaterals are approximately a virtual rectangle.

[0124] Among them, the first virtual quadrilaterals form the second virtual polygon in a co-edge manner, that is, two adjacent first virtual quadrilaterals in the row direction share a side in the column direction; two adjacent first virtual quadrilaterals in the column direction share a side in the row direction.

[0125] In some embodiments, the center of the first sub-pixel surrounded by the four first sub-pixels does not coincide with the center of the quadrilateral formed by the four first sub-pixels; the center of the third sub-pixel surrounded by the four third sub-pixels does not coincide with the center of the quadrilateral formed by the four third sub-pixels.

[0126] In some embodiments, among the four first virtual quadrilaterals of the same second virtual polygon, including the first virtual quadrilateral T1 and the second virtual polygon T2, the aspect ratio of the second sub-pixels in the first virtual quadrilateral T1 is greater than the aspect ratio of the second sub-pixels in the first virtual quadrilateral T2.

[0127] Among them, the length of the second sub-pixel may be the maximum size of the second sub-pixel in its length direction, and the width of the second sub-pixel may be the maximum size of the second sub-pixel in its width direction.

[0128] Alternatively, the second sub-pixel includes two mutually perpendicular symmetry axes, and the aspect ratio of the second sub-pixel is the ratio of the smaller size to the larger size on these two symmetry axes.

[0129] In some embodiments, the display substrate includes a plurality of pixel repeating units. One pixel repeating unit includes two first sub-pixels and two third sub-pixels located in the same first virtual quadrilateral, and further includes four second sub-pixels that are in the same second virtual polygon as one of the two first sub-pixels and surround this first sub-pixel.

[0130] In addition, the structure of the pixel repeating unit located at the edge of the display substrate may be different from the structure of the pixel repeating unit located inside the display substrate, and the pixel repeating unit located at the edge of the display substrate may lack some sub-pixels.

[0131] In some embodiments, the second virtual polygon is a rectangle.

[0132] In some embodiments, a line connecting centers of at least some of the second sub-pixels arranged along the first direction is substantially parallel to the first direction, and a line connecting centers of at least some of the second sub-pixels arranged along the second direction is substantially parallel to the second direction.

[0133] In some embodiments, some of the second sub-pixels have different shapes and / or areas. For example, some of the second sub-pixels have different shapes from other second sub-pixels, or some of the second sub-pixels have different areas from other second sub-pixels, or some of the second sub-pixels have different shapes and areas from other second sub-pixels.

[0134] In some embodiments, the shapes and areas of all second sub-pixels may be the same.

[0135] In some embodiments, within at least one of the first virtual quadrilaterals, a distance between the second sub-pixel and the first of the third sub-pixels is L1, a distance between the second sub-pixel and the second of the third sub-pixels is L2, and a distance between the second sub-pixel and both of the first sub-pixels is L1.

[0136] or

[0137] In at least one of the first virtual quadrilaterals, a distance between the second sub-pixel and two of the third sub-pixels, and a distance between two of the first sub-pixels are both L1;

[0138] or

[0139] In at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and the two third sub-pixels is L1, the distance between the second sub-pixel and the first of the first sub-pixels is L1, and the distance between the second sub-pixel and the second of the first sub-pixels is L2;

[0140] or

[0141] In at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and the two third sub-pixels is L2, and the distance between the second sub-pixel and the two first sub-pixels is L1;

[0142] Wherein, L2 is greater than L1, and the spacing between sub-pixels is the minimum distance between the sides of the sub-pixels.

[0143] In some embodiments, along the counterclockwise direction, the four second sub-pixels within the second virtual quadrilateral are respectively a second sub-pixel A, a second sub-pixel B, a second sub-pixel C, and a second sub-pixel D.

[0144] The second sub-pixel A, the second sub-pixel B, the second sub-pixel C, and the second sub-pixel D all have the same shape; or

[0145] The shapes of the second sub-pixel A and the second sub-pixel B are the same, the shapes of the second sub-pixel C and the second sub-pixel D are the same, and the shapes of the second sub-pixel A and the second sub-pixel C are different; or

[0146] The shapes of the second sub-pixel A and the second sub-pixel D are the same, the shapes of the second sub-pixel C and the second sub-pixel B are the same, and the shapes of the second sub-pixel A and the second sub-pixel C are different; or

[0147] The shapes of the second sub-pixel A and the second sub-pixel C are the same, and the shapes of the second sub-pixel A, the second sub-pixel B, and the second sub-pixel D are different from each other; or

[0148] The shapes of the second sub-pixel A, the second sub-pixel B, the second sub-pixel C, and the second sub-pixel D are different from each other.

[0149] In some embodiments, within at least one of the first virtual quadrilaterals, the center of the second sub-pixel does not coincide with the center of the first virtual quadrilateral.

[0150] In some embodiments, the included angle between the line connecting the centers of two adjacent second sub-pixels in the second direction and the second direction is greater than or equal to 0° and less than 90°. Specifically, the included angle can be greater than 0° and less than 30°, or greater than 0° and less than 20°.

[0151] In some embodiments, the centers of the first sub-pixel and the third sub-pixel in the nth row of the first sub-pixels are located on the same straight line, and the centers of the first sub-pixel and the third sub-pixel in the (n + 1)th row of the first sub-pixels are located on different straight lines.

[0152] In some embodiments, in the (n + 1)th row of the first sub-pixels, the centers of all the first sub-pixels are located on the second straight line, and the centers of all the third sub-pixels are located on the third straight line, and the second straight line and the third straight line are different straight lines.

[0153] In some embodiments, in the second direction perpendicular to the first direction, the centers of the first sub-pixel and the third sub-pixel located in the same sub-pixel column are located on the same straight line.

[0154] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include the first virtual quadrilateral A and the first virtual quadrilateral B,

[0155] In the first virtual quadrilateral A, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R1, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R3;

[0156] In the first virtual quadrilateral B, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R2, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R4;

[0157] R1 is not equal to R2, and / or R3 is not equal to R4.

[0158] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include the first virtual quadrilateral A and the first virtual quadrilateral B.

[0159] The first virtual quadrilateral A includes a first side and a third side parallel to the second direction;

[0160] The first virtual quadrilateral B includes a second side and a fourth side parallel to the second direction;

[0161] The first side and the second side are on the same straight line, and the third side and the fourth side are on the same straight line.

[0162] The length of the first side is less than the length of the second side, the length of the fourth side is less than the length of the third side, the length of the first side is equal to the length of the fourth side, and the length of the second side is equal to the length of the third side.

[0163] In some embodiments, two adjacent first virtual quadrilaterals in the second direction include the first virtual quadrilateral A and the first virtual quadrilateral B.

[0164] In the first virtual quadrilateral A, the distances between the second sub-pixel and the two first sub-pixels are equal, and the distances between the second sub-pixel and the two third sub-pixels are equal;

[0165] In the first virtual quadrilateral B, the distances between the second sub-pixel and the two first sub-pixels are equal, and the distances between the second sub-pixel and the two third sub-pixels are equal;

[0166] Wherein, the distance between sub-pixels is the minimum distance between the sides of the sub-pixels.

[0167] Optionally, in the display substrate provided in the embodiments of the present disclosure, the first sub-pixel is a red sub-pixel, the third sub-pixel is a blue sub-pixel, and the second sub-pixel is a green sub-pixel; or, the first sub-pixel is a blue sub-pixel, the third sub-pixel is a red sub-pixel; the second sub-pixel is a green sub-pixel. In this way, the green sub-pixel located in the first virtual quadrilateral can form a light-emitting pixel point with the red sub-pixel and the blue sub-pixel located at any two adjacent corners of the first virtual quadrilateral.

[0168] In some embodiments, the first sub-pixel may be a green sub-pixel, the third sub-pixel may be a red sub-pixel, and the second sub-pixel may be a blue sub-pixel; or the first sub-pixel may be a green sub-pixel, the third sub-pixel may be a blue sub-pixel, and the second sub-pixel may be a red sub-pixel.

[0169] Optionally, in the display substrate provided by the embodiment of the present disclosure, the areas of the first sub-pixels are the same, thereby ensuring that the light-emitting areas of the first sub-pixels are the same in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel, and the third sub-pixel.

[0170] Of course, in a specific implementation, in the display substrate provided by the embodiment of the present disclosure, the areas of at least two first sub-pixels may be different, which is not limited here.

[0171] Optionally, in the display substrate provided by the embodiment of the present disclosure, the areas of the second sub-pixels are the same, thereby ensuring that the light-emitting areas of the second sub-pixels are the same in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel, and the third sub-pixel.

[0172] Of course, in a specific implementation, in the display substrate provided by the embodiment of the present disclosure, the areas of at least two second sub-pixels may be different, which is not limited here.

[0173] Optionally, in the display substrate provided by the embodiment of the present disclosure, the areas of the third sub-pixels are the same, thereby ensuring that the light-emitting areas of the third sub-pixels are the same in any light-emitting pixel point composed of the first sub-pixel, the second sub-pixel, and the third sub-pixel.

[0174] Of course, in a specific implementation, in the display substrate provided by the embodiment of the present disclosure, the areas of at least two third sub-pixels may be different, which is not limited here.

[0175] In some embodiments, the area of a single first sub-pixel is S, the area of a single second color sub-pixel is f*S, and the area of a single third color sub-pixel is g*S, where 0.5≤f≤0.8, 1≤g≤2.2. This can make the brightness center distribution of any luminous pixel point composed of the first sub-pixel, the second sub-pixel and the third sub-pixel more uniform, thereby improving the display effect.

[0176] Furthermore, since the blue sub-pixel has a relatively low luminous efficiency and a short lifespan, optionally, in the display substrate provided in the embodiment of the present disclosure, the area of the blue sub-pixel can be designed to be larger than the areas of the red sub-pixel and the green sub-pixel.

[0177] Further, in the display substrate provided by the embodiments of the present disclosure, since the luminous efficiency of the green sub-pixels is generally high, the area of the green sub-pixels can be set to be smaller than the area of the red sub-pixels. Of course, in specific implementation, the area of the green sub-pixels can also be the same as the area of the red sub-pixels, which is not limited herein.

[0178] To ensure that for the same type of pixel during preparation, the mask pattern can be consistent, thereby simplifying the lithography process. Optionally, in the display substrate provided by the embodiments of the present disclosure, the shapes of the first sub-pixels are substantially the same.

[0179] Of course, in specific implementation, in the display substrate provided by the embodiments of the present disclosure, the shapes of at least two first sub-pixels can also be inconsistent, which is not limited herein.

[0180] To ensure that for the same type of pixel during preparation, the mask pattern can be consistent, thereby simplifying the lithography process. Optionally, in the display substrate provided by the embodiments of the present disclosure, the shapes of the second sub-pixels are substantially the same.

[0181] Of course, in specific implementation, in the display substrate provided by the embodiments of the present disclosure, the shapes of at least two second sub-pixels can also be inconsistent, which is not limited herein.

[0182] And, optionally, in the above display substrate provided by the embodiments of the present disclosure, when the four second sub-pixel patterns are the same or similar in a second virtual parallelogram, their arrangement angles can be the same, or their arrangement angles can be rotated arbitrarily, which is not limited herein.

[0183] To ensure that for the same type of pixel during preparation, the mask pattern can be consistent, thereby simplifying the lithography process. Optionally, in the display substrate provided by the embodiments of the present disclosure, the shapes of the third sub-pixels are substantially the same.

[0184] Of course, in specific implementation, in the display substrate provided by the embodiments of the present disclosure, the shapes of at least two third sub-pixels can also be inconsistent, which is not limited herein.

[0185] Optionally, the specific shapes, positional relationships, parallel and angular relationships, etc. of the second sub-pixels, first sub-pixels, and third sub-pixels can be designed as needed. In actual processes, due to process condition limitations or other factors, there may be some deviations. Therefore, as long as the shapes, positions, and relative positional relationships of the sub-pixels generally meet the above conditions, they all belong to the display substrate provided by the embodiments of the present disclosure.

[0186] It should be noted that the inconsistent patterns of the sub-pixels mentioned in the embodiments of the present disclosure refer to the inconsistent shapes of the sub-pixels. For example, one is circular and the other is rectangular. On the contrary, the consistent patterns of the sub-pixels mentioned in the embodiments of the present disclosure refer to the similar or identical shapes of the sub-pixels. For example, the shapes of two sub-pixels are both triangular, and regardless of whether their areas are equal, it is considered that the shapes of the two sub-pixels are consistent.

[0187] In some embodiments, the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel include any one of a polygon, a circle, or an ellipse.

[0188] In some embodiments,

[0189] the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are selected from any one of a quadrilateral, a pentagon, a hexagon, an octagon, a quadrilateral with rounded corners, a hexagon with rounded corners, an octagon with rounded corners, a circle, or an ellipse.

[0190] It should be noted that in the display substrate provided by the embodiments of the present disclosure, when it is mentioned that a sub-pixel is located at a certain position, it refers to the position range where the sub-pixel is located, as long as it is ensured that the sub-pixel overlaps with this position. In specific implementation, the center of the sub-pixel can overlap with this position. Of course, the center of the sub-pixel can also not overlap with this position, that is, there is an offset between the two, which is not limited here. And the center of the sub-pixel can be the geometric center of the sub-pixel pattern or the center of the light-emitting color of the sub-pixel, which is not limited here.

[0191] Optionally, in the display substrate provided by the embodiments of the present disclosure, in order to ensure that the sub-pixels are evenly distributed, try to make the centers of the sub-pixels close to the corresponding positions.

[0192] The technical solution of the present disclosure will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0193] In one embodiment, as Figure 2 shown, the first sub-pixels 01 and the third sub-pixels 03 are alternately arranged to form a plurality of first sub-pixel rows, the second sub-pixels 02 form a plurality of second sub-pixel rows, the first sub-pixel rows and the second sub-pixel rows are alternately arranged in the column direction, and the center connection lines of two first sub-pixels 01 and two third sub-pixels 03 distributed in two adjacent rows and two columns form a first virtual quadrilateral T( Figure 2In the small solid line box, two first sub-pixels 01 are located at two opposite vertex angles of the first virtual quadrilateral T, two third sub-pixels 03 are located at two opposite vertex angles of the first virtual quadrilateral T, and one second sub-pixel 02 is located inside the first virtual quadrilateral T. The center of the second sub-pixel 02 may coincide with the center Z of the first virtual quadrilateral T or may not coincide with the center Z of the first virtual quadrilateral T. Here, P is the distance between the centers of two adjacent second sub-pixels 02 in the second sub-pixel row.

[0194] As Figure 2 shown, in the first virtual quadrilateral T, the center connection line of the adjacent first sub-pixel 01 and third sub-pixel 03 in the column direction is parallel to the column direction; there are two center connection lines of the adjacent first sub-pixel 01 and third sub-pixel 03 in the row direction, one of which is parallel to the row direction and the other is not parallel to the row direction, so that the first virtual quadrilateral T is a trapezoid with two right angles, and the two non-right interior angles include an acute angle a and an obtuse angle (180° - a). In some embodiments, the acute angle a may be 86°. Of course, the acute angle a is not limited to 86° and can also be adjusted to other values.

[0195] As Figure 2 shown, in each first virtual quadrilateral T, the distance between the edge of the second sub-pixel 02 and the edge of the adjacent first sub-pixel 01 may be L1 on average, and the distance between the edge of the second sub-pixel 02 and the edge of the adjacent third sub-pixel 03 may be L1 on average.

[0196] As Figure 3 shown, in each first virtual quadrilateral T, the distance between the edge of the second sub-pixel 02 and the edge of the adjacent first sub-pixel 01 may be L1 on average, the distance between the edge of the second sub-pixel 02 and the edge of one adjacent third sub-pixel 03 may be L1, and the distance between the edge of the second sub-pixel 02 and the edge of the other adjacent third sub-pixel 03 may be L2.

[0197] As Figure 4 shown, in each first virtual quadrilateral T, the distance between the edge of the second sub-pixel 02 and the edge of the adjacent third sub-pixel 03 may be L1 on average, the distance between the edge of the second sub-pixel 02 and the edge of one adjacent first sub-pixel 01 may be L1, and the distance between the edge of the second sub-pixel 02 and the edge of the other adjacent first sub-pixel 01 may be L2.

[0198] As Figure 5 shown, in each first virtual quadrilateral T, the distance between the edge of the second sub-pixel 02 and the edge of the adjacent first sub-pixel 01 may be L1 on average, and the distance between the edge of the second sub-pixel 02 and the edge of the adjacent third sub-pixel 03 may be L2 on average.

[0199] As shown Figures 2 - 5 in the figure, the center of the second sub-pixel 02 is not at the intersection position of the two diagonals of the first virtual quadrilateral T. Among them, the diagonal of the first virtual quadrilateral T is the center connection line of the first sub-pixel 01 and the third sub-pixel 03 that are opposite to each other within the first virtual quadrilateral T. That is to say, the distances from the center of the second sub-pixel 02 to the centers of two adjacent first sub-pixels 01 are not equal, and the distances from the center of the second sub-pixel 02 to the centers of two adjacent third sub-pixels 03 are not equal.

[0200] Among them, the edge of the sub-pixel is the edge of the light-emitting area of the sub-pixel, and the center of the sub-pixel is the center of the light-emitting area of the sub-pixel.

[0201] Four adjacent first virtual quadrilaterals T are arranged in two columns and two rows to form a large virtual polygon (i.e., the largest solid line frame in Figure 2 ), that is, the second virtual polygon. The first sub-pixel 01 is located at the center position and the four vertex positions of the second virtual polygon, and the third sub-pixel 03 is located at the midpoint positions of the sides of the second virtual polygon. The second virtual polygon can be a virtual square.

[0202] As shown Figure 6 in the figure, the second virtual polygon includes two first virtual quadrilaterals T adjacent in the column direction. The length of the first side of the first first virtual quadrilateral T in the column direction is P1, and the length of the second side of the second first virtual quadrilateral T in the column direction is P2. The first side and the second side are on the same straight line, P1 is less than P2, and P1 + P2 = P3; the length of the third side of the first first virtual quadrilateral T in the column direction is P2, and the length of the fourth side of the second first virtual quadrilateral T in the column direction is P1. The third side and the fourth side are on the same straight line, P1 is less than P2, and P1 + P2 = P3; the distance between the centers of adjacent first sub-pixels 01 and third sub-pixels 03 can be P3 / 2.

[0203] Through the above pixel arrangement method, the distribution of the brightness center 04 of the light-emitting pixel points composed of the first sub-pixel 01, the second sub-pixel 02, and the third sub-pixel 03 can be made more uniform, and the display effect of the display device can be improved.

[0204] And as shown Figures 2 - 6 in the figure, staggering the arrangement of the second sub-pixel 02 can increase the manufacturing margin of the metal mask plate; in this way, when the aperture ratio is the same, the distance D between the mask plate openings (corresponding to the smallest solid line frame surrounding the second sub-pixel 02) for manufacturing the second sub-pixel 02 can be increased, improving the manufacturing margin of the metal mask plate and achieving a higher resolution.

[0205] As shown Figure 6As shown, the second virtual polygon includes two first virtual quadrilaterals T adjacent in the column direction. In the first first virtual quadrilateral T, the distances from the edge of the second sub-pixel 02 to the edges of the adjacent first sub-pixel 01 or the third sub-pixel 03 can both be L1; in the second first virtual quadrilateral T, the distances from the edge of the second sub-pixel 02 to the edges of the adjacent first sub-pixel 01 or the third sub-pixel 03 can both be L1. The second sub-pixel 02 in the first first virtual quadrilateral T is different in shape from the second sub-pixel 02 in the second first virtual quadrilateral T, but they have equal areas.

[0206] As Figure 7 As shown, the second virtual polygon includes two first virtual quadrilaterals T adjacent in the column direction. In the first first virtual quadrilateral T, the distance from the edge of the second sub-pixel 02 to the edge of the adjacent first sub-pixel 01 can be L1, and the distance from the edge of the second sub-pixel 02 to the edge of the adjacent third sub-pixel 03 can be L2; in the second first virtual quadrilateral T, the distance from the edge of the second sub-pixel 02 to the edge of the adjacent first sub-pixel 01 can be L3, and the distance from the edge of the second sub-pixel 02 to the edge of the adjacent third sub-pixel 03 can be L4. Among them, L1 can be equal to L3, and L2 can be equal to L4, so that the two second sub-pixels 02 in the two first virtual quadrilaterals T adjacent in the column direction have the same shape.

[0207] As Figure 8 As shown, the second virtual polygon includes two first virtual quadrilaterals T adjacent in the column direction. In the first first virtual quadrilateral T, the distance from the center of the second sub-pixel 02 to the center of the adjacent first sub-pixel 01 can be R1, and the distance from the center of the second sub-pixel 02 to the center of the adjacent third sub-pixel 03 can be R3; in the second first virtual quadrilateral T, the distance from the center of the second sub-pixel 02 to the center of the adjacent first sub-pixel 01 can be R2, and the distance from the center of the second sub-pixel 02 to the center of the adjacent third sub-pixel 03 can be R4. Among them, R1 may not be equal to R2, and R3 may not be equal to R4.

[0208] In this embodiment, for two first virtual quadrilaterals T adjacent in the column direction, the angles of the acute angle a can be equal, but their positions are not adjacent in the column direction; for two first virtual quadrilaterals T adjacent in the row direction, the angles of the acute angle a can be equal.

[0209] As Figures 2 - 8As shown, the second virtual polygon includes two first virtual quadrilaterals T adjacent to each other in the column direction. In the first first virtual quadrilateral T, the length of the line connecting the centers of the two opposite first sub-pixels 01 is greater than the length of the line connecting the centers of the two opposite third sub-pixels 03; in the second first virtual quadrilateral T, the length of the line connecting the centers of the two opposite third sub-pixels 03 is greater than the length of the line connecting the centers of the two opposite first sub-pixels 01.

[0210] like Figure 9 As shown, in the column direction, the center lines of the second sub-pixels 02 are not on a straight line. This distribution is conducive to a more uniform distribution of the brightness center of the synthetic white point, which can improve the display effect of the display device, such as Figure 9 As shown, Z1 is the white point brightness center of the display substrate of this embodiment, and Z2 is the white point brightness center of the existing display substrate. It can be seen that in the two adjacent first virtual quadrilaterals T in the column direction, the position of the white point brightness center in the first first virtual quadrilateral T is offset to the lower right corner, and the position of the white point brightness center in the second first virtual quadrilateral T is offset to the lower left corner, which ultimately makes the synthetic white point brightness centers of the two adjacent first virtual quadrilaterals T closer to the same straight line. Compared with the existing solution, the distribution of the white point brightness centers of the display substrate of this embodiment is more uniform, and the display effect is better.

[0211] like Figure 9 As shown, the sub-pixels in the dotted box constitute a pixel repetition unit, including two first sub-pixels 01 and two third sub-pixels 03 located in the same first virtual quadrilateral, and also including four second sub-pixels 02 located in the same second virtual polygon as one of the two first sub-pixels 01 and surrounding the first sub-pixel.

[0212] In this embodiment, the shapes of the first sub-pixels 01 are all the same, and the shapes of the third sub-pixels 03 are all the same. The shape of the first sub-pixel 01 can be the same as the shape of the third sub-pixel 03 .

[0213] Based on the same disclosed concept, embodiments of the present disclosure also provide an organic electroluminescent display panel. The display substrate may be any of the display substrates described above in the embodiments of the present disclosure. Adjacent first virtual quadrilaterals are arranged in the row and column directions with shared sides. That is, two adjacent display substrates share a first subpixel 01 and a third subpixel 03 located on the sides of the adjacent first virtual quadrilaterals. Since the principles for solving the problem of this organic electroluminescent display panel are similar to those of the aforementioned display substrates, the implementation of this organic electroluminescent display panel can refer to the implementation of the aforementioned pixel arrangement structure, and any repetitions will not be repeated.

[0214] The adjacent first virtual quadrilaterals are arranged in the row direction and the column direction in a manner of sharing a side, that is, two adjacent first virtual quadrilaterals in the row direction share a side in the column direction; two adjacent first virtual quadrilaterals in the column direction share a side in the row direction.

[0215] Among them, when adjacent first virtual quadrilaterals share a side, one side of two adjacent first virtual quadrilaterals can be the same, but the shapes of two adjacent first virtual quadrilaterals can be different, for example, the sizes of interior angles can be different.

[0216] In some embodiments, the organic electroluminescent display panel further includes a pixel definition layer, the pixel definition layer includes a plurality of pixel definition layer openings, each of the first sub-pixels, each of the second sub-pixels, and each of the third sub-pixels respectively corresponds to a pixel definition layer opening, and the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are substantially the same as the shapes of the openings of the corresponding pixel definition layer.

[0217] In some embodiments, the first sub-pixel includes multiple film layers, and at least part of the multiple film layers of the first sub-pixel covers the area outside the pixel definition layer opening; and / or, the second sub-pixel includes multiple film layers, and at least part of the multiple film layers of the second sub-pixel covers the area outside the pixel definition layer opening; and / or, the third sub-pixel includes multiple film layers, and at least part of the multiple film layers of the third sub-pixel covers the area outside the pixel definition layer opening.

[0218] In some embodiments, at least part of the shapes or areas of the pixel definition layer openings are different.

[0219] In some embodiments, at least part of the shapes or areas of the pixel definition layer openings corresponding to the second sub-pixels are different.

[0220] In some embodiments, at least part of the shortest distances from the pixel definition layer openings corresponding to the second sub-pixels to adjacent openings are not equal.

[0221] Based on the same general inventive concept, embodiments of the present disclosure further provide a display device, including any one of the above-mentioned organic electroluminescent display panels provided by the embodiments of the present disclosure. The display device can be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or any other product or component with a display function. The implementation of the display device can refer to the embodiments of the above-mentioned display panel, and the repeated parts will not be described again.

[0222] Based on the same inventive concept, embodiments of the present disclosure further provide a high-precision metal mask for manufacturing any of the above-mentioned display substrates provided by the embodiments of the present disclosure. The high-precision metal mask has multiple opening regions, and the multiple opening regions include a first opening region corresponding to the position of the first sub-pixel, a second opening region corresponding to the position of the second sub-pixel, or a third opening region corresponding to the position of the third sub-pixel. Since the principle of solving problems by this high-precision metal mask is similar to that of the aforementioned display substrate, the implementation of this high-precision metal mask can refer to the implementation of the aforementioned display substrate, and the repeated parts will not be described again.

[0223] In some embodiments, the first sub-pixel includes multiple film layers, the second sub-pixel includes multiple film layers, the third sub-pixel includes multiple film layers, the shape and distribution of the first opening region are substantially the same as those of at least one film layer in the first sub-pixel, and the shape and distribution of the third opening region are substantially the same as those of at least one film layer in the third sub-pixel.

[0224] The shape and distribution of the second opening region are substantially the same as those of at least one film layer in the second sub-pixel.

[0225] In some embodiments, among the multiple second opening regions corresponding to the position of the second sub-pixel of the high-precision metal mask, at least two have different shapes or areas.

[0226]

[0227] It should be noted that each embodiment in this specification is described in a progressive manner. The same or similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the method embodiment, since it is basically similar to the product embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the product embodiment. [[ID=]]

[0228] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the field to which this disclosure pertains. The "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or items appearing before this word cover the elements or items listed after this word and their equivalents, without excluding other elements or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0229] It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element, or intervening elements may be present.

[0230] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner.

[0231] As described above, the above are only specific embodiments of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed in this disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure shall be subject to the protection scope of the claims.

Claims

1. A display substrate, wherein: comprising a plurality of first sub-pixels, a plurality of second sub-pixels and a plurality of third sub-pixels, In a first direction, the first sub-pixels and the third sub-pixels are alternately arranged to form a plurality of first sub-pixel rows, and the second sub-pixels form a plurality of second sub-pixel rows. The first sub-pixel rows and the second sub-pixel rows are alternately arranged in a second direction. A line connecting the centers of two first sub-pixels and two third sub-pixels distributed in two adjacent rows and two columns forms a first virtual quadrilateral. The two first sub-pixels are located at two opposite vertex corners of the first virtual quadrilateral, and the second sub-pixels are located within the first virtual quadrilateral. The first virtual quadrilateral includes two 90° internal angles and two non-90° internal angles, and the two non-90° internal angles include a first internal angle and a second internal angle. For the same first virtual quadrilateral, a distance between the center of a first subpixel located at the first interior corner and the center of a third subpixel located at the second interior corner on a first straight line is x, the first straight line is perpendicular to a common side of the two 90° interior angles, the first interior angle a ranges from (h-10° to h+10°), and h is calculated using one of the following formulas: Here, P is the distance between the centers of the two most adjacent second sub-pixels in the second sub-pixel row.

2. The display substrate according to claim 1, wherein: The value range of x is 1-10um.

3. The display substrate according to claim 1, wherein The first interior angle a is greater than or equal to 70° and less than 90°.

4. The display substrate according to claim 1, wherein A line connecting the centers of two adjacent first sub-pixels in the first direction is parallel to the first direction, and a line connecting the centers of two adjacent third sub-pixels in the first direction is parallel to the first direction; A line connecting the centers of the first sub-pixel and the third sub-pixel adjacent to each other in the second direction is parallel to the second direction.

5. The display substrate according to claim 4, wherein: The distance between two adjacent first sub-pixels in the first direction is equal to the distance between two adjacent first sub-pixels in the second direction; and / or A distance between two adjacent third sub-pixels in the first direction is equal to a distance between two adjacent third sub-pixels in the second direction.

6. The display substrate according to claim 1, wherein: The first direction and the second direction are substantially perpendicular to each other. The first direction is one of a row direction and a column direction, and the second direction is the other of the row direction and the column direction.

7. The display substrate according to claim 1, wherein: The four first virtual quadrilaterals arranged in two columns and two rows form a second virtual polygon in a co-edge manner. The second virtual polygon includes four second sub-pixels, five first sub-pixels, and four third sub-pixels; The four second sub-pixels are respectively located within the four first virtual quadrilaterals, one of the first sub-pixels is surrounded by the other four first sub-pixels, the other four first sub-pixels and the four third sub-pixels are respectively located on the edges or vertices of the second virtual polygon, and the four first sub-pixels and the four third sub-pixels located on the edges or vertices of the second virtual polygon are alternately distributed in a clockwise and counterclockwise order along the edges of the second virtual polygon; or The second virtual polygon includes four second sub-pixels, five third sub-pixels, and four first sub-pixels; The four second sub-pixels are respectively located in the four first virtual quadrilaterals, one third sub-pixel is surrounded by the other four third sub-pixels, the other four third sub-pixels and the four first sub-pixels are respectively located on the edges or vertices of the second virtual polygon, and the four third sub-pixels and the four first sub-pixels located on the edges or vertices of the second virtual polygon are alternately distributed in a clockwise and counterclockwise order along the edges of the second virtual polygon.

8. The display substrate according to claim 7, wherein: The center of a first subpixel surrounded by four first subpixels does not coincide with the center of a quadrilateral formed by the four first subpixels; the center of a third subpixel surrounded by four third subpixels does not coincide with the center of a quadrilateral formed by the four third subpixels.

9. The display substrate according to claim 7, wherein: The display substrate includes multiple pixel repetition units, one pixel repetition unit includes two first sub-pixels and two third sub-pixels located in the same first virtual quadrilateral, and also includes four second sub-pixels located in the same second virtual polygon as one of the two first sub-pixels and surrounding the first sub-pixel.

10. The display substrate according to claim 7, wherein: The second virtual polygon is a rectangle.

11. The display substrate according to claim 1, wherein A line connecting centers of at least some of the second sub-pixels arranged along the first direction is substantially parallel to the first direction, and a line connecting centers of at least some of the second sub-pixels arranged along the second direction is substantially parallel to the second direction.

12. The display substrate according to claim 1, wherein The second sub-pixels have the same shape and area.

13. The display substrate according to claim 1, wherein In at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and the first of the third sub-pixels is L1, the distance between the second sub-pixel and the second of the third sub-pixels is L2, and the distances between the second sub-pixel and the two first sub-pixels are both L1; or In at least one of the first virtual quadrilaterals, a distance between the second sub-pixel and two of the third sub-pixels, and a distance between two of the first sub-pixels are both L1; or In at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and the two third sub-pixels is L1, the distance between the second sub-pixel and the first of the first sub-pixels is L1, and the distance between the second sub-pixel and the second of the first sub-pixels is L2; or In at least one of the first virtual quadrilaterals, the distance between the second sub-pixel and the two third sub-pixels is L2, and the distance between the second sub-pixel and the two first sub-pixels is L1; Wherein, L2 is greater than L1, and the spacing between sub-pixels is the minimum distance between the sides of the sub-pixels.

14. The display substrate according to claim 1, wherein In at least one of the first virtual quadrilaterals, the center of the second sub-pixel does not coincide with the center of the first virtual quadrilateral.

15. The display substrate according to claim 1, wherein An angle between a line connecting the centers of two adjacent second sub-pixels in the second direction and the second direction is greater than or equal to 0° and less than 90°.

16. The display substrate according to claim 1, wherein The two first virtual quadrilaterals adjacent to each other in the second direction include a first virtual quadrilateral A and a first virtual quadrilateral B. In the first virtual quadrilateral A, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R1, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R3; In the first virtual quadrilateral B, the distance between the center of the second sub-pixel and the center of the adjacent first sub-pixel is R2, and the distance between the center of the second sub-pixel and the center of the adjacent third sub-pixel is R4; R1 and R2 are not equal, and / or R3 and R4 are not equal.

17. The display substrate according to claim 1, wherein The two first virtual quadrilaterals adjacent to each other in the second direction include a first virtual quadrilateral A and a first virtual quadrilateral B. The first virtual quadrilateral A includes a first side and a third side parallel to the second direction; The first virtual quadrilateral B includes a second side and a fourth side parallel to the second direction; The first side and the second side are located on the same straight line, and the third side and the fourth side are located on the same straight line. The length of the first side is smaller than the length of the second side, the length of the fourth side is smaller than the length of the third side, the length of the first side is equal to the length of the fourth side, and the length of the second side is equal to the length of the third side.

18. The display substrate according to claim 1, wherein The two first virtual quadrilaterals adjacent to each other in the second direction include a first virtual quadrilateral A and a first virtual quadrilateral B. In the first virtual quadrilateral A, the distance between the second sub-pixel and the two first sub-pixels is L3, and the distance between the second sub-pixel and the two third sub-pixels is L4; In the first virtual quadrilateral B, the distance between the second sub-pixel and the two first sub-pixels is L3, and the distance between the second sub-pixel and the two third sub-pixels is L4; The spacing between sub-pixels is the minimum distance between the sides of the sub-pixels.

19. The display substrate according to claim 1, wherein The centers of the first subpixel and the third subpixel in the nth first subpixel row are located on the same straight line, and the centers of the first subpixel and the third subpixel in the (n+1)th first subpixel row are located on different straight lines, where n is a positive integer.

20. The display substrate according to claim 19, wherein In the (n+1)th first sub-pixel row, centers of all first sub-pixels are located on a second straight line, centers of all third sub-pixels are located on a third straight line, and the second straight line and the third straight line are different straight lines.

21. The display substrate according to claim 19, wherein In a second direction perpendicular to the first direction, centers of the first sub-pixel and the third sub-pixel in the same sub-pixel column are located on the same straight line.

22. The display substrate according to claim 1, wherein The first sub-pixels have the same shape and area, and the third sub-pixels have the same shape and area.

23. The display substrate according to claim 1, wherein The area of a single first sub-pixel is S, the area of a single second sub-pixel is f*S, and the area of a single third sub-pixel is g*S, where 0.5≤f≤0.8, and 1≤g≤2.

2.

24. The display substrate according to claim 1, wherein The shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel include any one of a polygon, a circle, and an ellipse.

25. The display substrate according to claim 1, wherein The shapes of the first sub-pixel, the second sub-pixel and the third sub-pixel are selected from any one of a quadrilateral, a pentagon, a hexagon, an octagon, a quadrilateral with rounded corners, a hexagon with rounded corners or an octagon with rounded corners, a circle or an ellipse.

26. The display substrate according to claim 1, wherein The first sub-pixel is a red sub-pixel, the third sub-pixel is a blue sub-pixel, and the second sub-pixel is a green sub-pixel; or, the first sub-pixel is a blue sub-pixel, the third sub-pixel is a red sub-pixel, and the second sub-pixel is a green sub-pixel; or, the first sub-pixel is a green sub-pixel, the third sub-pixel is a red sub-pixel, and the second sub-pixel is a blue sub-pixel; or, the first sub-pixel is a green sub-pixel, the third sub-pixel is a blue sub-pixel, and the second sub-pixel is a red sub-pixel.

27. An organic electroluminescent display panel, characterized in that: Comprising the display substrate according to any one of claims 1-26.

28. The organic electroluminescent display panel according to claim 27, wherein: It also includes a pixel defining layer, which includes a plurality of pixel defining layer openings. Each of the first sub-pixels, each of the second sub-pixels, and each of the third sub-pixels corresponds to a pixel defining layer opening, and the shapes of the first sub-pixel, the second sub-pixel, and the third sub-pixel are roughly the same as the opening shape of the corresponding pixel defining layer.

29. The organic electroluminescent display panel according to claim 27, wherein: The first sub-pixel includes a multi-layer film layer, and the multi-layer film layer of the first sub-pixel at least partially covers the area outside the opening of the pixel definition layer; and / or the second sub-pixel includes a multi-layer film layer, and the multi-layer film layer of the second sub-pixel at least partially covers the area outside the opening of the pixel definition layer; And / or, the third sub-pixel includes a multi-layer film, and the multi-layer film of the third sub-pixel at least partially covers the area outside the opening of the pixel defining layer.

30. A display device, characterized in that: Comprising the organic electroluminescent display panel according to any one of claims 27 to 29.

31. A high-precision metal mask, characterized in that: Used to manufacture a display substrate as described in any one of claims 1 to 26, wherein it comprises: a plurality of opening areas, the plurality of opening areas comprising a first opening area corresponding to the position of the first sub-pixel, or a second opening area corresponding to the position of the second sub-pixel, or a third opening area corresponding to the position of the third sub-pixel.

32. The high-precision metal mask according to claim 31, characterized in that: The first sub-pixel includes a multi-layer film layer, the second sub-pixel includes a multi-layer film layer, and the third sub-pixel includes a multi-layer film layer. The shape of the first opening area is roughly the same as the shape and distribution of at least one film layer in the first sub-pixel, the shape of the third opening area is roughly the same as the shape and distribution of at least one film layer in the third sub-pixel, and the shape and distribution of the second opening area are roughly the same as the shape and distribution of at least one film layer in the second sub-pixel.

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