Display substrate and display device

Abstract

The utility model discloses a display substrate and a display device. In the display substrate, a first sub-pixel group comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, and a second sub-pixel group comprises a first color sub-pixel, a second color sub-pixel and two third color sub-pixels; the two first color sub-pixels and the two second color sub-pixels in the first sub-pixel group and the second sub-pixel group are alternately arranged in the second direction to form a third sub-pixel group; three third color sub-pixels in the first sub-pixel group and the second sub-pixel group are arranged along a second direction to form a fourth sub-pixel group; the span of the third sub-pixel groups in the second direction is larger than that of the fourth sub-pixel groups in the second direction, and the first distance between the two fourth sub-pixel groups of the two adjacent pixel unit structures in the second direction is larger than the second distance between the two third sub-pixel groups. Therefore, the display substrate can improve the pixel aperture opening ratio.

Description

Technical Field

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

[0002] Organic light-emitting diode (OLED) display devices have become the research hotspot and technology development direction of major manufacturers due to their advantages such as wide color gamut, high contrast, thin and light design, self-luminescence, bright colors, low power consumption and wide viewing angle. The light-emitting principle of organic light-emitting diode display devices is as follows: each sub-pixel of the organic light-emitting diode display device includes an anode, a cathode and an organic light-emitting layer located between the anode and the cathode; when the light-emitting display is performed, electrons and holes are injected from the cathode and the anode into the electron transport layer and the hole transport layer respectively, and then the electrons and holes migrate from the electron transport layer and the hole transport layer respectively to the organic light-emitting layer, and meet in the organic light-emitting layer to form excitons and emit visible light.

[0003] After decades of development, organic light-emitting diode display devices have gradually become mature, especially in terms of luminous brightness, device efficiency and operating life. At the same time, the device structure of organic light-emitting diode display devices has also been improved to a certain extent. However, there are still some problems with organic light-emitting diode display devices. For example, in terms of operating life, although the operating life of the red and green organic light-emitting elements has been improved, the operating life of the blue organic light-emitting element is relatively low, which affects the further development of organic light-emitting diode display devices; in terms of device efficiency, although the device efficiency has been improved compared with before, its external quantum efficiency (EQE) is still only about 20%, which leads to the brightness of the organic light-emitting diode display device being limited.

[0004] On the other hand, as notebook computers, car displays and other products are moving towards miniaturization and lightness, the market demand for high-efficiency, high-brightness, and low-power display devices is becoming increasingly strong. In this context, organic light-emitting diode display devices are facing increasing challenges due to their own problems. Utility Model Content

[0005] A display substrate and a display device are provided in an embodiment of the present disclosure. The display substrate adds a third color sub-pixel in the second sub-pixel group, so that the aperture ratio of the third color sub-pixel in the display substrate increases by 50%, and the aperture ratio of the sub-pixel increases by 16.7%. In addition, in the pixel unit structure, in the third sub-pixel group, since the first color sub-pixel and the second color sub-pixel are alternately arranged, the distance between two adjacent first color sub-pixels or two adjacent second color sub-pixels is large enough to meet the production requirements of a fine metal mask plate; in the fourth sub-pixel group, since only one third color sub-pixel is arranged in the first sub-pixel group, the distance between the third color sub-pixel in the first sub-pixel group and the adjacent third color sub-pixel is also large, which can meet the production requirements of a fine metal mask plate. Therefore, the display substrate can meet the production requirements of a fine metal mask plate while improving the pixel aperture ratio.

[0006] At least one embodiment of the present disclosure provides a display substrate, which includes: a base substrate; and a plurality of pixel unit structures, which are arranged in an array along a first direction and a second direction on the base substrate, each of the pixel unit structures includes a first sub-pixel group and a second sub-pixel group adjacent to each other in the second direction, the first sub-pixel group includes a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the second sub-pixel group includes a first color sub-pixel, a second color sub-pixel and two third color sub-pixels, two of the first color sub-pixels and two of the second color sub-pixels in the first sub-pixel group and the second sub-pixel group are alternately arranged in the second direction to form a third sub-pixel group, three of the third color sub-pixels in the first sub-pixel group and the second sub-pixel group are arranged along the second direction to form a fourth sub-pixel group, the span of the third sub-pixel group in the second direction is greater than the span of the fourth sub-pixel group in the second direction, and a first distance between two of the fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than a second distance between two of the third sub-pixel groups.

[0007] For example, in a display substrate provided in one embodiment of the present disclosure, the first color sub-pixel includes a first anode and a first light-emitting layer, the second color sub-pixel includes a second anode and a second light-emitting layer, the third color sub-pixel includes a third anode and a third light-emitting layer, and the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group are integrated into one.

[0008] For example, in a display substrate provided by an embodiment of the present disclosure, the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group are formed by using the same mask opening.

[0009] For example, in a display substrate provided in an embodiment of the present disclosure, in the first sub-pixel group, a first virtual straight line passing through the center of the third color sub-pixel and extending along the first direction is located between the first color sub-pixel and the second color sub-pixel.

[0010] For example, in a display substrate provided in an embodiment of the present disclosure, in the first sub-pixel group, the distance between the first virtual straight line and the first color sub-pixel is equal to the distance between the first virtual straight line and the second color sub-pixel.

[0011] For example, in the display substrate provided in one embodiment of the present disclosure, in the second sub-pixel group, the center of one of the two third-color sub-pixels and the center of the first color sub-pixel are located on a second virtual straight line extending along the first direction, and the center of one of the two third-color sub-pixels and the center of the second color sub-pixel are located on a third virtual straight line extending along the first direction.

[0012] For example, the display substrate provided by an embodiment of the present disclosure also includes: a first microlens, located on a side of the first color sub-pixel away from the base substrate, a second microlens, located on a side of the second color sub-pixel away from the base substrate, and a third microlens, located on a side of the third color sub-pixel away from the base substrate.

[0013] For example, in a display substrate provided in an embodiment of the present disclosure, the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel on the base substrate falls within the orthographic projection of the first microlens on the base substrate, the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel on the base substrate falls within the orthographic projection of the second microlens on the base substrate, and the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel on the base substrate falls within the orthographic projection of the third microlens on the base substrate.

[0014] For example, in a display substrate provided in an embodiment of the present disclosure, an edge of an orthographic projection of an effective light-emitting area of ​​the first color sub-pixel on the base substrate is tangent to an edge of an orthographic projection of the first microlens on the base substrate, an edge of an orthographic projection of an effective light-emitting area of ​​the second color sub-pixel on the base substrate is tangent to an edge of an orthographic projection of the second microlens on the base substrate, and an edge of an orthographic projection of an effective light-emitting area of ​​the third color sub-pixel on the base substrate is tangent to an edge of an orthographic projection of the third microlens on the base substrate.

[0015] For example, in a display substrate provided in an embodiment of the present disclosure, an area of ​​the third color sub-pixel in the first sub-pixel group is greater than an area of ​​the third color sub-pixel in the second sub-pixel group.

[0016] For example, in a display substrate provided in an embodiment of the present disclosure, an area of ​​the first color sub-pixel in the first sub-pixel group is smaller than an area of ​​the first color sub-pixel in the second sub-pixel group, and an area of ​​the second color sub-pixel in the first sub-pixel group is smaller than an area of ​​the second color sub-pixel in the second sub-pixel group.

[0017] For example, in a display substrate provided in an embodiment of the present disclosure, a fourth virtual straight line passing through the center of the third color sub-pixel in the first sub-pixel group and extending along the second direction is located on a side of a fifth virtual straight line passing through the center of the third color sub-pixel in the second sub-pixel group and extending along the second direction close to the first color sub-pixel.

[0018] For example, in a display substrate provided in an embodiment of the present disclosure, a sixth virtual straight line passing through the centers of the first color sub-pixel and the second color sub-pixel in the first sub-pixel group and extending along the second direction is located on a side away from the third color sub-pixel of a seventh virtual straight line passing through the centers of the first color sub-pixel and the second color sub-pixel in the second sub-pixel group and extending along the second direction.

[0019] For example, the display substrate provided by an embodiment of the present disclosure also includes: a pixel defining layer, located on the base substrate, the first color sub-pixel also includes a first pixel opening, located in the pixel defining layer, the first light-emitting layer is in contact with the first anode through the first pixel opening, the second color sub-pixel also includes a second pixel opening, located in the pixel defining layer, the second light-emitting layer is in contact with the second anode through the second pixel opening, the third color sub-pixel also includes a third pixel opening, located in the pixel defining layer, and the third light-emitting layer is in contact with the third anode through the third pixel opening.

[0020] For example, in a display substrate provided in an embodiment of the present disclosure, the shapes of the first pixel opening, the second pixel opening and the third pixel opening are all rectangular.

[0021] For example, in a display substrate provided in an embodiment of the present disclosure, the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a blue sub-pixel.

[0022] For example, the display substrate provided by one embodiment of the present disclosure also includes: a spacer, the orthographic projection of the spacer on the base substrate is located between the orthographic projections of the third color sub-pixel of the first sub-pixel group and the third color sub-pixel of the second sub-pixel group in the pixel unit structure on the base substrate.

[0023] At least one embodiment of the present disclosure also provides a display substrate, which includes: a base substrate; a plurality of sub-pixels located on the base substrate, the plurality of sub-pixels including a first sub-pixel column and a second sub-pixel column alternately arranged along a first direction, the first sub-pixel column including a first sub-pixel group cyclically and equidistantly arranged along a second direction, the first sub-pixel group including a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the second sub-pixel column including a second sub-pixel group cyclically and equidistantly arranged along the second direction, the second sub-pixel group including a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the first sub-pixel column and the second sub-pixel column are staggered so that a virtual straight line passing through the center of the third color sub-pixel in the first sub-pixel group and extending along the first direction is located between the first color sub-pixel and the second color sub-pixel in the second sub-pixel group.

[0024] For example, in a display substrate provided by an embodiment of the present disclosure, the arrangement order of the first color sub-pixels, the second color sub-pixels and the third color sub-pixels in the first sub-pixel group is the same as the arrangement order of the first color sub-pixels, the second color sub-pixels and the third color sub-pixels in the second sub-pixel group.

[0025] For example, in a display substrate provided by an embodiment of the present disclosure, the first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a blue sub-pixel.

[0026] At least one embodiment of the present disclosure further provides a display device, comprising any of the display substrates described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, but are not intended to limit the present disclosure.

[0028] Figure 1 is a schematic diagram of a pixel arrangement structure on a display substrate;

[0029] Figure 2 is a cross-sectional schematic diagram of an organic light emitting diode display substrate;

[0030] Figure 3 A schematic plan view of a fine metal mask;

[0031] Figure 4 for Figure 3 A partial enlarged schematic diagram of a fine metal mask is shown;

[0032] Figure 5 is a schematic diagram of another pixel arrangement structure on a display substrate;

[0033] Figure 6 A schematic plan view of a display substrate provided in one embodiment of the present disclosure;

[0034] Figure 7 A partial cross-sectional schematic diagram of a display substrate is provided for one embodiment of the present disclosure;

[0035] Figure 8 A schematic plan view of another display substrate provided in one embodiment of the present disclosure;

[0036] Fig. 9 A schematic diagram of the size relationship between sub-pixels and micro-lenses in a display substrate provided in one embodiment of the present disclosure;

[0037] Fig.10 A graph showing the size relationship and gain effect of sub-pixels and micro-lenses in a display substrate provided by an embodiment of the present disclosure;

[0038] Fig.11 A schematic diagram of a microlens in a display substrate provided by an embodiment of the present disclosure;

[0039] Fig.12 A schematic plan view of another display substrate provided in one embodiment of the present disclosure;

[0040] Fig.13 A schematic diagram of a display device provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. The words "include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0043] The features such as "parallel", "perpendicular" and "same" used in the embodiments of the present disclosure include the features such as "parallel", "perpendicular" and "same" in a strict sense, as well as the cases where "approximately parallel", "approximately perpendicular" and "approximately the same" contain certain errors, taking into account the errors associated with the measurement and the measurement of specific quantities (for example, the limitations of the measurement system), and are expressed as within the acceptable deviation range for a specific value determined by ordinary technicians in this field. For example, "approximately" can mean within one or more standard deviations, or within 10% or 5% of the value. When the number of a component is not specifically indicated in the following of the embodiments of the present disclosure, it means that the component can be one or more, or can be understood as at least one. "At least one" refers to one or more, and "multiple" refers to at least two. The "same layer" in the embodiments of the present disclosure refers to the relationship between multiple film layers formed by the same material after the same step (for example, a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same.

[0044] As the market demand for high-efficiency, high-brightness, and low-power display devices becomes stronger and stronger, in this context, the solution of using micro lenses to improve the light extraction efficiency of organic light-emitting diode display devices has entered the field of vision of more and more people. According to calculations, the use of micro lenses can improve the light extraction efficiency of organic light-emitting diode display devices, especially the forward light extraction efficiency, by more than 50%.

[0045] During the research, the inventors of the present application noticed that although the solution using microlenses has excellent light extraction efficiency, this solution needs to meet the following requirements to achieve better results, as follows:

[0046] First, the sub-pixels and micro-lenses in the organic light-emitting diode display device need to be set in a one-to-one correspondence, that is, one sub-pixel must be set in correspondence with one micro-lens. After simulation, it was found that if one sub-pixel corresponds to multiple micro-lenses, or multiple sub-pixels correspond to one micro-lens, the light extraction efficiency of the organic light-emitting diode display device is not significantly improved, and it does not have the effect of improving brightness and light extraction efficiency.

[0047] Second, when the sub-pixels and micro-lenses need to be arranged in a one-to-one correspondence, in order to ensure that the micro-lenses have a good gain effect, it is also necessary to ensure that the size of the micro-lens is larger than the opening size of the sub-pixel, that is, larger than the size of the effective light-emitting area of ​​the sub-pixel. For example, when the plane shape of the micro-lens is circular and the opening of the sub-pixel is rectangular, the diameter of the micro-lens needs to be larger than the length of the diagonal of the opening of the sub-pixel.

[0048] If a conventional pixel arrangement structure is used, due to the limitation of size and distance, it is impossible to form a microlens with a one-to-one correspondence above the sub-pixel and a size larger than the opening size of the sub-pixel. Figure 1 FIG. 1 is a schematic diagram of a pixel arrangement structure on a display substrate. Figure 1 As shown, the display substrate 10 includes a first sub-pixel column 11 and a second sub-pixel column 12; the first sub-pixel column 11 includes red sub-pixels 21 and green sub-pixels 22 arranged alternately; the second sub-pixel column 12 includes blue sub-pixels 23 arranged in pairs. Figure 1 As shown in FIG. 1 , the blue sub-pixel 23 has a larger size in the vertical direction, but is closer to the adjacent red sub-pixel 21 and green sub-pixel 22 in the horizontal direction, so it is impossible to form a micro-lens arranged one-to-one above the blue sub-pixel 23 and having a size larger than the opening size of the blue sub-pixel 23. Therefore, for an organic light emitting diode display device using a micro-lens, the pixel arrangement structure needs to be redesigned.

[0049] Figure 2 is a cross-sectional schematic diagram of an organic light emitting diode display substrate; Figure 3 A schematic plan view of a fine metal mask; Figure 4 for Figure 3 The enlarged schematic diagram of the fine metal mask shown in FIG. Figure 2 As shown, the organic light emitting diode display substrate 10 includes a stacked anode 13, a hole injection layer 14, a hole transport layer 15, an organic light emitting layer 16, an electron transport layer 17, a cathode 18, a covering layer 19 and a thin film encapsulation layer 20; the hole transport layer 15 includes a red hole transport layer 15R, a green hole transport layer 15G and a blue hole transport layer 15B, and the organic light emitting layer 16 includes a red light emitting layer 16E, a green light emitting layer 16G and a blue light emitting layer 16B arranged corresponding to the red hole transport layer 15R, the green hole transport layer 15G and the blue hole transport layer 15B. In the above-mentioned production process of the organic light emitting diode display substrate, the red light emitting layer 16E, the green light emitting layer 16G and the blue light emitting layer 16B need to be produced using three fine metal masks (FMM).

[0050] like Figure 3 As shown, the fine metal mask plate 31 includes a mask opening 32 and a rib (Rib) 33 between the mask openings 32. The mask opening 32 of the fine metal mask plate 31 can be used to evaporate and form one of the above-mentioned red light-emitting layer 16E, green light-emitting layer 16G and blue light-emitting layer 16B. Usually, the fine metal mask plate 31 is usually made of a low expansion iron-nickel alloy material, such as Invar36, and its thickness is less than 50 microns. In order to ensure the strength of the fine metal mask plate, such as Figure 4As shown, the opening spacing (i.e., the size of the ribs) of the fine metal mask plate 31 needs to be greater than 16 microns. Figure 4 Rib1 and Rib2 in the sample need to be larger than 16 μm.

[0051] On the other hand, due to the alignment errors in the evaporation process and the position accuracy errors of the substrate to be evaporated, the mask opening of the fine metal mask plate needs to be 18 microns larger than the opening of the corresponding sub-pixel, that is, the opening on one side needs to be 9 microns larger; combined with the above-mentioned opening distance size limit, the interval between sub-pixels of the same color needs to be greater than 34 microns, which will greatly reduce the opening rate of the sub-pixel.

[0052] Figure 5 Schematic diagram of another pixel arrangement structure on a display substrate. Under the condition that the sub-pixels and micro-lenses need to be arranged one-to-one and the size of the micro-lens is larger than the opening size of the sub-pixel, a blue sub-pixel 23 is added to the pixel unit composed of the red sub-pixel 21, the green sub-pixel 22 and the blue sub-pixel 23, and the four sub-pixels are arranged one-to-one with the four micro-lenses 40. On the one hand, the pixel aperture ratio can be improved, and on the other hand, the operating life of the blue sub-pixel can be increased. However, Figure 5 The blue sub-pixel of the display substrate shown in the figure will face the problem of being unable to be manufactured, and the specific reasons are as follows:

[0053] like Figure 5 As shown, the display substrate 10 includes a first sub-pixel column 11 and a second sub-pixel column 12, the first sub-pixel column 11 includes red sub-pixels 21 and green sub-pixels 22 arranged alternately, and the second sub-pixel column 12 includes blue sub-pixels 23. In the first sub-pixel column 11, since other color sub-pixels are arranged between sub-pixels of the same color, the interval between the red sub-pixels 21 and the green sub-pixels 22 in the first sub-pixel column 11 can meet the requirements of a fine metal mask. However, in the second sub-pixel column 12, whether the organic light-emitting layer of a blue sub-pixel 23 is made using one mask opening or multiple adjacent blue sub-pixels 23 share one organic light-emitting layer, the distance between the organic light-emitting layers made using different mask openings cannot meet the requirements of a fine metal mask, and therefore cannot be made. For example, in a product, the opening sizes of the red sub-pixel 21, the green sub-pixel 22, and the blue sub-pixel 23 are all 30.2 microns, and the opening spacing between adjacent sub-pixels is 22 microns. Then, the opening spacing between adjacent red sub-pixels 21 is 74.2 microns, the opening spacing between adjacent green sub-pixels 22 is 74.2 microns, but the opening spacing between adjacent blue sub-pixels 23 is only 22 microns. It should be noted that if Figure 5 If the distance between adjacent blue sub-pixels 23 is forcibly set to be greater than 34 microns, the resolution and aperture ratio of the display panel will be greatly reduced.

[0054] In this regard, an embodiment of the present disclosure provides a display substrate, which includes a substrate and a plurality of pixel unit structures; the plurality of pixel unit structures are arranged in an array on the substrate along a first direction and a second direction. Each pixel unit structure includes a first sub-pixel group and a second sub-pixel group arranged adjacent to each other in the second direction, the first sub-pixel group includes a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, and the second sub-pixel group includes a first color sub-pixel, a second color sub-pixel and two third color sub-pixels; two first color sub-pixels and two second color sub-pixels in the first sub-pixel group and the second sub-pixel group are alternately arranged in the second direction to form a third sub-pixel group; three third color sub-pixels in the first sub-pixel group and the second sub-pixel group are arranged along the second direction to form a fourth sub-pixel group; the span of the third sub-pixel group in the second direction is greater than the span of the fourth sub-pixel group in the second direction, and the first distance between the two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than the second distance between the two third sub-pixel groups. First, the display substrate adds a third color sub-pixel in the second sub-pixel group, so that the aperture ratio of the third color sub-pixel in the display substrate increases by 50%, and the aperture ratio of the sub-pixel increases by 16.7%. In addition, in the pixel unit structure, in the third sub-pixel group, since the first color sub-pixel and the second color sub-pixel are alternately arranged, the distance between two adjacent first color sub-pixels or two adjacent second color sub-pixels is large enough to meet the production requirements of the fine metal mask plate; in the fourth sub-pixel group, since only one third color sub-pixel is arranged in the first sub-pixel group, the distance between the third color sub-pixel in the first sub-pixel group and the adjacent third color sub-pixel is also large, which can meet the production requirements of the fine metal mask plate. As a result, the display substrate can meet the production requirements of the fine metal mask plate while improving the pixel aperture ratio.

[0055] The embodiment of the present disclosure also provides a display device, comprising the above-mentioned display substrate, so that the display device can meet the production requirements of a fine metal mask while improving the pixel aperture ratio.

[0056] The display substrate and the display device provided by the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0057] Figure 6 FIG. 1 is a schematic plan view of a display substrate provided by an embodiment of the present disclosure. Figure 6As shown, the display substrate 100 includes a base substrate 110 and a plurality of pixel unit structures 120; the plurality of pixel unit structures 120 are arranged in an array along a first direction X and a second direction Y on the base substrate 110. For example, the above-mentioned pixel unit structures 120 can be regarded as repeating units on the base substrate 110, and are arranged in an array along the first direction X and the second direction Y to cover the entire base substrate 110.

[0058] like Figure 6 As shown, each pixel unit structure 120 includes a first sub-pixel group 121 and a second sub-pixel group 122 which are adjacently arranged in the second direction, the first sub-pixel group 121 includes a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230, and the second sub-pixel group 122 includes a first color sub-pixel 210, a second color sub-pixel 220 and two third color sub-pixels 230; the two first color sub-pixels 210 and the two second color sub-pixels 220 in the first sub-pixel group 121 and the second sub-pixel group 122 are alternately arranged in the second direction to form a third sub-pixel group 123; the three third color sub-pixels 230 in the first sub-pixel group 121 and the second sub-pixel group 122 are arranged along the second direction to form a fourth sub-pixel group 124.

[0059] It should be noted that the first sub-pixel group and the second sub-pixel group are a division of all sub-pixels in the pixel unit structure, and the sub-pixels in the first sub-pixel group and the second sub-pixel group are not overlapped, that is, the sub-pixels belonging to the first sub-pixel group do not belong to the second sub-pixel group; and the third sub-pixel group and the fourth sub-pixel group are another division of all sub-pixels in the pixel unit structure, and the sub-pixels in the third sub-pixel group and the fourth sub-pixel group are not overlapped, but the sub-pixels in the first sub-pixel group and the third sub-pixel group or the fourth sub-pixel group can overlap, that is, the sub-pixels in the first sub-pixel group can belong to the third sub-pixel group or the fourth sub-pixel group, and the sub-pixels in the second sub-pixel group and the third sub-pixel group or the fourth sub-pixel group can overlap, that is, the sub-pixels in the second sub-pixel group can belong to the third sub-pixel group or the fourth sub-pixel group. In addition, the third sub-pixel group and the fourth sub-pixel group can be regarded as two sub-pixel columns formed by the sub-pixels in a pixel unit structure.

[0060] like Figure 6 As shown, the span of the third sub-pixel group 123 in the second direction is greater than the span of the fourth sub-pixel group 124 in the second direction, and the first distance D1 between two fourth sub-pixel groups 124 of two adjacent pixel unit structures 120 in the second direction is greater than the second distance D2 between two third sub-pixel groups 123. It should be noted that the above-mentioned "span in the second direction" refers to the size of the area occupied by the sub-pixel group in the second direction.

[0061] In the display substrate provided in the embodiment of the present disclosure, a third color sub-pixel is added to the second sub-pixel group, and the number of third color sub-pixels in a pixel unit structure is increased from two to three, and the number of sub-pixels is increased from six to seven, thereby increasing the aperture ratio of the third color sub-pixel in the display substrate by 50% and the aperture ratio of the sub-pixel by 16.7%, thereby increasing the brightness and operating life of the product.

[0062] On the other hand, since a plurality of pixel unit structures are arranged in an array along the first direction and the second direction on the substrate, when the span of the third sub-pixel group in the second direction is greater than the span of the fourth sub-pixel group in the second direction, the first distance between the two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than the second distance between the two third sub-pixel groups. At this time, for the third sub-pixel group, since the first color sub-pixel and the second color sub-pixel are alternately arranged, the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the production requirements of a fine metal mask; and for two adjacent fourth sub-pixel groups in the second direction, the three third color sub-pixels in one fourth sub-pixel group can be produced using the same mask opening, and since the first distance between the two fourth sub-pixel groups is greater than the second distance between the two third sub-pixel groups, the first distance between the two fourth sub-pixel groups is large enough to meet the production requirements of a fine metal mask. Thus, the display substrate can meet the production requirements of a fine metal mask while improving the pixel aperture ratio.

[0063] In some examples, such as Figure 6 As shown, the first distance D1 between the two fourth sub-pixel groups 124 of two adjacent pixel unit structures 120 in the second direction is greater than the sum of the second distance D2 between the two third sub-pixel groups 123 and half of the size of a first color sub-pixel 210 or a second color sub-pixel 220 in the second direction, thereby better ensuring that the first distance between the two fourth sub-pixel groups is large enough to meet the production requirements of the fine metal mask.

[0064] In some examples, such as Figure 6 As shown, in the above display substrate, the first distance between two adjacent fourth sub-pixel groups 124 is also greater than the distance between adjacent first color sub-pixels 210 and second color sub-pixels 220. In addition, the maximum size of the third color sub-pixel 230 in a direction parallel to the base substrate 110 is smaller than the distance between the center of the third color sub-pixel 230 and the center of the adjacent first color sub-pixel 210 or second color sub-pixel 220. It can be seen that the above pixel arrangement structure can make each third color sub-pixel correspond to a circular micro-lens.

[0065] Figure 7 A partial cross-sectional schematic diagram of a display substrate is provided for one embodiment of the present disclosure. Figure 7 As shown, the first color sub-pixel 210 includes a first anode 212 and a first light-emitting layer 214, the second color sub-pixel 220 includes a second anode 222 and a second light-emitting layer 224, and the third color sub-pixel 230 includes a third anode 232 and a third light-emitting layer 234. The display substrate 100 may further include a common cathode 170, the first anode 212 and the common cathode 170 are configured to apply a driving current to the first light-emitting layer 214, thereby driving the first light-emitting layer 214 to emit light of a first color, the second anode 222 and the common cathode 170 are configured to apply a driving current to the second light-emitting layer 224, thereby driving the second light-emitting layer 224 to emit light of a second color, and the third anode 232 and the common cathode 170 are configured to apply a driving current to the third light-emitting layer 234, thereby driving the third light-emitting layer 234 to emit light of a third color.

[0066] For example, the first color may be red, the second color may be green, and the third color may be blue. Of course, the embodiments of the present disclosure include but are not limited to this.

[0067] like Figure 6 As shown, the three third light-emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 are integrated into one, that is, the three third color sub-pixels 230 in the fourth sub-pixel group 124 share an integrated third light-emitting layer. Therefore, the smaller distance between the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group will not affect their formation, as long as the distance between adjacent fourth sub-pixel groups can meet the production requirements of the fine metal mask. It should be noted that, since the three third anodes of the three third color sub-pixels are independent of each other, even if the three third color sub-pixels share an integrated third light-emitting layer, the three third color sub-pixels can still emit light and display independently.

[0068] In some examples, the three third light emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 may be made using the same mask opening, so as to be integrated into one. The mask opening may be a mask opening of a fine metal mask plate.

[0069] In some examples, such as Figure 6As shown, in the first sub-pixel group 121, the first virtual straight line 201 passing through the center of the third color sub-pixel 230 and extending along the first direction X is located between the first color sub-pixel 210 and the second color sub-pixel 220. As a result, the distribution of the three color sub-pixels in the first sub-pixel group is relatively uniform, so that when the first sub-pixel group is displayed as a pixel point, a better display effect can be achieved. It should be noted that the center of the third color sub-pixel mentioned above is the geometric center of the effective light-emitting area of ​​the third color sub-pixel.

[0070] In some examples, such as Figure 6 As shown, in the first sub-pixel group 121, the distance between the first virtual straight line 201 and the first color sub-pixel 210 is equal to the distance between the first virtual straight line 201 and the second color sub-pixel 220. Therefore, when the first sub-pixel group is displayed as a pixel point, a better display effect can be achieved.

[0071] It is worth noting that through the display simulation of the pixel structure, it is found that Figure 6 When the display substrate with the pixel arrangement structure shown displays a pattern with oblique edges (not parallel to the first direction and the second direction), the edges are relatively neat without defects such as color fringing and sawtooth.

[0072] In some examples, when the opening sizes of the first color sub-pixel 210, the second color sub-pixel 220, and the third color sub-pixel 230 are all rectangles with a side length of 30.2 microns, and the opening spacing between adjacent sub-pixels is 22 microns, the opening spacing between adjacent first color sub-pixels 210 is 74.2 microns, the opening spacing between adjacent second color sub-pixels 220 is 74.2 microns, and the distance between two adjacent fourth sub-pixel groups 124 is 48.1 microns, that is, the opening spacing between two third color sub-pixels 230 made with different mask openings is 48.1 microns, both of which meet the production requirements of fine metal mask plates.

[0073] It is worth noting that although Figure 6 In the illustrated embodiment, a first virtual straight line passing through the center of the third color sub-pixel and extending along the first direction is located between the first color sub-pixel and the second color sub-pixel, but the embodiments of the present disclosure include but are not limited to this. The third color sub-pixel in the first sub-pixel group may also be arranged closer to the second sub-pixel group, thereby making the distance between two adjacent fourth sub-pixel groups larger.

[0074] In some examples, such as Figure 6As shown, in the second sub-pixel group 122, the center of one of the two third color sub-pixels 230 and the center of the first color sub-pixel 210 are located on a second virtual straight line 202 extending along the first direction X, and the center of one of the two third color sub-pixels 230 and the center of the second color sub-pixel 220 are located on a third virtual straight line 203 extending along the first direction X. Thus, the sub-pixels in the second sub-pixel group are distributed more evenly, so that when the second sub-pixel group is displayed as a pixel point, a better display effect can be achieved. It should be noted that the above-mentioned center is the geometric center of the effective light-emitting area of ​​each sub-pixel.

[0075] In some examples, such as Figure 6 As shown, the display substrate 100 further includes a first microlens 131, a second microlens 132 and a third microlens 133; the first microlens 131 is located on the side of the first color sub-pixel 210 away from the substrate substrate 110, the second microlens 132 is located on the side of the second color sub-pixel 220 away from the substrate substrate 110, and the third microlens 133 is located on the side of the third color sub-pixel 230 away from the substrate substrate 110. In other words, the first microlens and the first color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding first color sub-pixel, the second microlens and the second color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding second color sub-pixel, and the third microlens and the third color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding third color sub-pixel. As a result, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, through the above-mentioned microlenses.

[0076] In some examples, such as Figure 6 As shown, the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the substrate 110 falls within the orthographic projection of the first microlens 131 on the substrate 110; the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the substrate 110 falls within the orthographic projection of the second microlens 132 on the substrate 110; and the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110 falls within the orthographic projection of the third microlens 133 on the substrate 110. Thus, the display substrate can ensure that the first microlens, the second microlens and the third microlens have a good gain effect.

[0077] It should be noted that the above-mentioned effective light emitting area can be defined by the pixel opening of each sub-pixel. Figure 7The display substrate 100 also includes a pixel defining layer 140 located on the base substrate 110; the first color sub-pixel 210 includes a first pixel opening 141 located in the pixel defining layer 140, and the first light-emitting layer 214 is arranged in contact with the first anode 212 through the first pixel opening 141; the second color sub-pixel 220 includes a second pixel opening 142 located in the pixel defining layer 140, and the second light-emitting layer 224 is arranged in contact with the second anode 222 through the second pixel opening 142; the third color sub-pixel 230 includes a third pixel opening 143 located in the pixel defining layer 140, and the third light-emitting layer 234 is arranged in contact with the third anode 232 through the third pixel opening 143.

[0078] In some examples, such as Figure 6 As shown, the shapes of the first pixel opening 141 , the second pixel opening 142 and the third pixel opening 143 are all rectangular, that is, the shapes of the orthographic projections of the first pixel opening 141 , the second pixel opening 142 and the third pixel opening 143 on the base substrate 110 are all rectangular.

[0079] In some examples, such as Figure 6 As shown, the edge of the orthographic projection of the effective light emitting area of ​​the first color sub-pixel 210 on the substrate 110 is tangent to the edge of the orthographic projection of the first microlens 131 on the substrate 110, the edge of the orthographic projection of the effective light emitting area of ​​the second color sub-pixel 210 on the substrate 110 is tangent to the edge of the orthographic projection of the second microlens 132 on the substrate 110, and the edge of the orthographic projection of the effective light emitting area of ​​the third color sub-pixel 230 on the substrate 110 is tangent to the edge of the orthographic projection of the third microlens 133 on the substrate 110. Thus, the display substrate fully utilizes the area of ​​the display substrate while ensuring that each microlens has a good gain effect.

[0080] For example, Figure 6 As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the base substrate 110 is a rectangle, and the shape of the orthographic projection of the first microlens 131 on the base substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the base substrate 110.

[0081] For example, Figure 6 As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the base substrate 110 is a rectangle, and the shape of the orthographic projection of the second microlens 132 on the base substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the base substrate 110.

[0082] For example, Figure 6As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110 is a rectangle, and the shape of the orthographic projection of the third microlens 133 on the substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110.

[0083] In some examples, such as Figure 6 As shown, the display substrate 100 also includes a spacer 160, whose orthographic projection on the base substrate 110 is located between the orthographic projections of the third color sub-pixel 230 of the first sub-pixel group 121 and the third color sub-pixel 230 of the second sub-pixel group 122 in the pixel unit structure 120 on the base substrate 110, so that the spacer is set by utilizing the space inside the pixel unit structure 120, so that the pixel unit structure 120 can be arranged tightly, and there is no need to provide space for the spacer between the pixel unit structures 120, thereby avoiding the spacer from affecting the aperture ratio.

[0084] Figure 8 FIG. 1 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. Figure 8 As shown, the display substrate 100 includes a base substrate 110 and a plurality of pixel unit structures 120; the plurality of pixel unit structures 120 are arranged in an array along a first direction X and a second direction Y on the base substrate 110. For example, the above-mentioned pixel unit structures 120 can be regarded as repeating units on the base substrate 110, and are arranged in an array along the first direction X and the second direction Y to cover the entire base substrate 110.

[0085] like Figure 8 As shown, each pixel unit structure 120 includes a first sub-pixel group 121 and a second sub-pixel group 122 which are adjacently arranged in the second direction, the first sub-pixel group 121 includes a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230, and the second sub-pixel group 122 includes a first color sub-pixel 210, a second color sub-pixel 220 and two third color sub-pixels 230; the two first color sub-pixels 210 and the two second color sub-pixels 220 in the first sub-pixel group 121 and the second sub-pixel group 122 are alternately arranged in the second direction to form a third sub-pixel group 123; the three third color sub-pixels 230 in the first sub-pixel group 121 and the second sub-pixel group 122 are arranged along the second direction to form a fourth sub-pixel group 124.

[0086] like Figure 8As shown, the span of the third sub-pixel group 123 in the second direction is greater than the span of the fourth sub-pixel group 124 in the second direction, and the first distance D1 between the two fourth sub-pixel groups 124 of two adjacent pixel unit structures 120 in the second direction is greater than the second distance D2 between the two third sub-pixel groups 123. In addition, the area of ​​the third color sub-pixel 230 in the first sub-pixel group 121 is greater than the area of ​​the third color sub-pixel 230 in the second sub-pixel group 122. It should be noted that the area of ​​the sub-pixel in the embodiment of the present disclosure refers to the effective light-emitting area of ​​the sub-pixel or the area of ​​the pixel opening, which can be specifically referred to in Figure 7 Related description.

[0087] In the display substrate provided in the embodiment of the present disclosure, a third color sub-pixel is added to the second sub-pixel group, the number of third color sub-pixels in a pixel unit structure is increased from two to three, and the number of sub-pixels is increased from six to seven, so that the aperture ratio of the third color sub-pixel in the display substrate is increased by 50%, and the aperture ratio of the sub-pixel is increased by 16.7%. In addition, the area of ​​the third color sub-pixel in the first sub-pixel group is larger than the area of ​​the third color sub-pixel in the second sub-pixel group, that is, the display substrate provided in the embodiment increases the area of ​​the third color sub-pixel in the first sub-pixel group, thereby further increasing the aperture ratio of the third color sub-pixel in the display substrate, thereby increasing the operating life of the product.

[0088] On the other hand, since a plurality of pixel unit structures are arranged in an array along the first direction and the second direction on the substrate, when the span of the third sub-pixel group in the second direction is greater than the span of the fourth sub-pixel group in the second direction, the first distance between the two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than the second distance between the two third sub-pixel groups. At this time, for the third sub-pixel group, since the first color sub-pixel and the second color sub-pixel are alternately arranged, the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the production requirements of a fine metal mask; and for two adjacent fourth sub-pixel groups in the second direction, the three third color sub-pixels in one fourth sub-pixel group can be produced using the same mask opening, and since the first distance between the two fourth sub-pixel groups is greater than the second distance between the two third sub-pixel groups, the first distance between the two fourth sub-pixel groups is large enough to meet the production requirements of a fine metal mask. Thus, the display substrate can meet the production requirements of a fine metal mask while improving the pixel aperture ratio.

[0089] For example, the first color may be red, the second color may be green, and the third color may be blue. Of course, the embodiments of the present disclosure include but are not limited to this.

[0090] In some examples, such as Figure 8 As shown, the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the substrate 110 falls within the orthographic projection of the first microlens 131 on the substrate 110; the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the substrate 110 falls within the orthographic projection of the second microlens 132 on the substrate 110; and the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110 falls within the orthographic projection of the third microlens 133 on the substrate 110. Thus, the display substrate can ensure that the first microlens, the second microlens and the third microlens have a good gain effect.

[0091] For example, Figure 8 As shown, since the area of ​​the third color sub-pixel 230 in the first sub-pixel group 121 is larger than the area of ​​the third color sub-pixel 230 in the second sub-pixel group 122, the area of ​​the orthographic projection of the third microlens 133 corresponding to the third color sub-pixel 230 in the first sub-pixel group 121 on the substrate 110 is larger than the area of ​​the orthographic projection of the third microlens 133 corresponding to the third color sub-pixel 230 in the second sub-pixel group 122 on the substrate 110.

[0092] In some examples, such as Figure 8 As shown, the fourth virtual straight line 204 passing through the center of the third color sub-pixel 230 in the first sub-pixel group 121 and extending along the second direction Y is located on the side of the fifth virtual straight line 205 passing through the center of the third color sub-pixel 230 in the second sub-pixel group 122 and extending along the second direction Y close to the first color sub-pixel 210. That is, the center of the third color sub-pixel 230 in the first sub-pixel group 121 is closer to the edge of the pixel unit structure 120 close to the first color sub-pixel 210 than the center of the third color sub-pixel 230 in the second sub-pixel group 122, thereby making full use of the area on the display substrate.

[0093] In some examples, such as Figure 8 As shown, the sixth virtual straight line 206 passing through the centers of the first color sub-pixel 210 and the second color sub-pixel 220 in the first sub-pixel group 121 and extending along the second direction Y is located on the side away from the third color sub-pixel 230 of the seventh virtual straight line 207 passing through the centers of the first color sub-pixel 210 and the second color sub-pixel 220 in the second sub-pixel group 122 and extending along the second direction Y. That is, the centers of the first color sub-pixel 210 and the second color sub-pixel 220 in the first sub-pixel group 121 are closer to the edge of the pixel unit structure 120 close to the first color sub-pixel 210 than the centers of the first color sub-pixel 210 and the second color sub-pixel 220 in the second sub-pixel group 122, thereby making full use of the area on the display substrate.

[0094] In some examples, due to Figure 6 The space in the first sub-pixel group 121 in the display substrate shown is limited and has been fully utilized, such as Figure 8 As shown, when the area of ​​the third color sub-pixel 230 in the first sub-pixel group 121 is increased, the area of ​​the first color sub-pixel 210 in the first sub-pixel group 121 is smaller than the area of ​​the first color sub-pixel 210 in the second sub-pixel group 122, and the area of ​​the second color sub-pixel 220 in the first sub-pixel group 121 is smaller than the area of ​​the second color sub-pixel 220 in the second sub-pixel group 122. Thus, the display substrate can increase the area of ​​the third color sub-pixel while fully utilizing the area.

[0095] like Figure 8 As shown, the three third light-emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 are integrated into one, that is, the three third color sub-pixels 230 in the fourth sub-pixel group 124 share an integrated third light-emitting layer. Therefore, the smaller distance between the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group will not affect their formation, as long as the distance between adjacent fourth sub-pixel groups can meet the production requirements of the fine metal mask. It should be noted that, since the three third anodes of the three third color sub-pixels are independent of each other, even if the three third color sub-pixels share an integrated third light-emitting layer, the three third color sub-pixels can still emit light and display independently.

[0096] In some examples, the three third light emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 may be made using the same mask opening, so as to be integrated into one. The mask opening may be a mask opening of a fine metal mask plate.

[0097] In some examples, such as Figure 8 As shown, the display substrate 100 also includes a spacer 160, whose orthographic projection on the base substrate 110 is located between the orthographic projections of the third color sub-pixel 230 of the first sub-pixel group 121 and the third color sub-pixel 230 of the second sub-pixel group 122 in the pixel unit structure 120 on the base substrate 110, so that the spacer is set by utilizing the space inside the pixel unit structure 120, so that the pixel unit structure 120 can be arranged tightly, and there is no need to provide space for the spacer between the pixel unit structures 120, thereby avoiding the spacer from affecting the aperture ratio.

[0098] In some examples, such as Figure 8As shown, the display substrate 100 further includes a first microlens 131, a second microlens 132 and a third microlens 133; the first microlens 131 is located on the side of the first color sub-pixel 210 away from the substrate substrate 110, the second microlens 132 is located on the side of the second color sub-pixel 220 away from the substrate substrate 110, and the third microlens 133 is located on the side of the third color sub-pixel 230 away from the substrate substrate 110. In other words, the first microlens and the first color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding first color sub-pixel, the second microlens and the second color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding second color sub-pixel, and the third microlens and the third color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding third color sub-pixel. As a result, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, through the above-mentioned microlenses.

[0099] Fig. 9 A schematic diagram of the size relationship between sub-pixels and micro-lenses in a display substrate provided in one embodiment of the present disclosure; Fig.10 This is a graph showing the relationship between the size of sub-pixels and micro-lenses and the gain effect in a display substrate provided by an embodiment of the present disclosure. Fig. 9 As shown, the sub-pixel may be any one of the first color sub-pixel 210, the second color sub-pixel 220, and the third color sub-pixel 230, and the micro-lens may be any one of the first micro-lens 131, the second micro-lens 132, and the third micro-lens 133. Fig.10 As shown, for microlenses of the same size, the smaller the size of the sub-pixel, the better the gain effect of the microlens; as the size of the sub-pixel increases, the gain effect of the microlens becomes better. Then for sub-pixels of equal size, the larger the microlens, the greater its gain effect. Therefore, the size of the microlens provided in the embodiment of the present disclosure can be increased as much as possible according to the actual process level.

[0100] Fig.11 A schematic diagram of a microlens in a display substrate provided in accordance with an embodiment of the present disclosure. Fig.11 The microlens shown may be any one of the first microlens 131, the second microlens 132 and the third microlens 133 described above. Fig.11 As shown, the orthographic projection of the microlens on the base substrate 110 covers the pixel opening of the corresponding sub-pixel.

[0101] Fig.12 FIG. 1 is a schematic plan view of another display substrate provided by an embodiment of the present disclosure. Fig.12As shown, the display substrate 100 includes a base substrate 110 and a plurality of sub-pixels 200 located on the base substrate 110; the plurality of sub-pixels 200 include a first sub-pixel column 250 and a second sub-pixel column 260 alternately arranged along a first direction X, the first sub-pixel column 250 includes a first sub-pixel group 255 cyclically and equidistantly arranged along a second direction, the first sub-pixel group 255 includes a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230, the second sub-pixel column 260 includes a second sub-pixel group 265 cyclically and equidistantly arranged along the second direction, the second sub-pixel group 265 includes a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel 230; the first sub-pixel column 250 and the second sub-pixel column 260 are staggered so that a virtual straight line passing through the center of the third color sub-pixel 230 in the first sub-pixel group 255 and extending along the first direction is located between the first color sub-pixel 210 and the second color sub-pixel 220 in the second sub-pixel group 265.

[0102] In the display substrate provided by the embodiment of the present disclosure, the sub-pixels in the first sub-pixel column and the second sub-pixel column are arranged at equal distances, so that the aperture ratio of the sub-pixels in the display substrate is greatly increased, thereby increasing the brightness and operating life of the product. It should be noted that in the case of such a staggered setting, a plurality of pixel points need to be formed by pixel borrowing technology, and the details can be referred to the common pixel borrowing technology, which will not be described in detail here.

[0103] On the other hand, for the first sub-pixel column, two sub-pixels of other colors, namely, the second color sub-pixel and the third color sub-pixel, are arranged between two adjacent first color sub-pixels, so the opening distance between two adjacent first color sub-pixels can meet the production requirements of a fine metal mask, and similarly, the opening distance between two adjacent second color sub-pixels and the opening distance between two adjacent third color sub-pixels can also meet the production requirements of a fine metal mask. Similarly, for the second sub-pixel column, two sub-pixels of other colors, namely, the second color sub-pixel and the third color sub-pixel, are arranged between the first color sub-pixels, so the opening distance between two adjacent first color sub-pixels can meet the production requirements of a fine metal mask, and similarly, the opening distance between two adjacent second color sub-pixels and the opening distance between two adjacent third color sub-pixels can also meet the production requirements of a fine metal mask.

[0104] On the other hand, since the first sub-pixel column and the second sub-pixel column are staggered, a virtual straight line passing through the center of the third color sub-pixel in the first sub-pixel group and extending along the first direction is located between the first color sub-pixel and the second color sub-pixel in the second sub-pixel group. Therefore, the opening distance between two adjacent first color sub-pixels in the first direction, the opening distance between two adjacent second color sub-pixels in the first direction, and the opening distance between two adjacent third color sub-pixels in the first direction are also large, thereby meeting the production requirements of a fine metal mask.

[0105] In some examples, such as Fig.12 As shown, in the above display substrate, the distance between two adjacent third color sub-pixels 230 is also greater than the distance between the adjacent first color sub-pixels 210 and the second color sub-pixel 220. In addition, the maximum size of the third color sub-pixel 230 in a direction parallel to the base substrate 110 is smaller than the distance between the center of the third color sub-pixel 230 and the center of the adjacent first color sub-pixel 210 or the second color sub-pixel 220. It can be seen that the above pixel arrangement structure can make each third color sub-pixel correspond to a circular micro-lens.

[0106] In some examples, such as Fig.12 As shown, the size of the orthographic projection of the first color sub-pixel 210 on the substrate 110, the size of the orthographic projection of the second color sub-pixel 210 on the substrate 110, and the size of the orthographic projection of the third color sub-pixel 230 on the substrate 110 are substantially the same, so that the staggered first sub-pixel column and the second sub-pixel column can form a pixel point composed of the first color sub-pixels, the second color sub-pixels, and the third color sub-pixels arranged in a triangular shape.

[0107] In some examples, such as Fig.12 As shown, the arrangement order of the first color sub-pixel 210, the second color sub-pixel 220 and the third color sub-pixel 230 in the first sub-pixel group 121 is the same as the arrangement order of the first color sub-pixel 210, the second color sub-pixel 220 and the third color sub-pixel 230 in the second sub-pixel group 122.

[0108] In some examples, the first color sub-pixel 210 is a red sub-pixel, the second color sub-pixel 220 is a green sub-pixel, and the third color sub-pixel 230 is a blue sub-pixel.

[0109] In some examples, such as Fig.12As shown, the display substrate 100 further includes a first microlens 131, a second microlens 132 and a third microlens 133; the first microlens 131 is located on the side of the first color sub-pixel 210 away from the substrate substrate 110, the second microlens 132 is located on the side of the second color sub-pixel 220 away from the substrate substrate 110, and the third microlens 133 is located on the side of the third color sub-pixel 230 away from the substrate substrate 110. In other words, the first microlens and the first color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding first color sub-pixel, the second microlens and the second color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding second color sub-pixel, and the third microlens and the third color sub-pixel are arranged in a one-to-one correspondence and are located on the light-emitting side of the corresponding third color sub-pixel. As a result, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, through the above-mentioned microlenses.

[0110] In some examples, such as Fig.12 As shown, the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the substrate 110 falls within the orthographic projection of the first microlens 131 on the substrate 110; the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the substrate 110 falls within the orthographic projection of the second microlens 132 on the substrate 110; and the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110 falls within the orthographic projection of the third microlens 133 on the substrate 110. Thus, the display substrate can ensure that the first microlens, the second microlens and the third microlens have a good gain effect.

[0111] In some examples, such as Fig.12 As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the base substrate 110 is a rectangle, and the shape of the orthographic projection of the first microlens 131 on the base substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel 210 on the base substrate 110.

[0112] For example, Fig.12 As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the base substrate 110 is a rectangle, and the shape of the orthographic projection of the second microlens 132 on the base substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel 220 on the base substrate 110.

[0113] For example, Fig.12As shown, the shape of the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110 is a rectangle, and the shape of the orthographic projection of the third microlens 133 on the substrate 110 is a circle, whose diameter is greater than the length of the diagonal of the orthographic projection of the effective light-emitting area of ​​the third color sub-pixel 230 on the substrate 110.

[0114] In some examples, such as Fig.12 As shown, the display substrate 100 also includes a spacer 160, whose orthographic projection on the base substrate 110 is located between the first sub-pixel column 250 and the second sub-pixel column 260, and is located in an area surrounded by a first color sub-pixel 210, a second color sub-pixel 220 and a third color sub-pixel, so that the spacer is set by utilizing the space inside the pixel unit structure 120, thereby preventing the spacer from affecting the aperture ratio.

[0115] Fig.13 This is a schematic diagram of a display device provided by an embodiment of the present disclosure. The display device 500 may include the display substrate 100 provided by any of the above embodiments. Thus, the display device can also meet the production requirements of a fine metal mask while improving the pixel aperture ratio.

[0116] In some examples, the display device may be a vehicle display device such as a vehicle display, a navigation system, etc. Of course, the embodiments of the present disclosure include but are not limited to this, and the display device may also be any product or component with a display function such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigation system, etc.

[0117] There are a few points to note:

[0118] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0119] (2) In the absence of conflict, features in the same embodiment or in different embodiments of the present disclosure may be combined with each other.

[0120] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the protection scope of the present disclosure. The protection scope of the present disclosure is determined by the appended claims.

Claims

1. A display substrate, comprising: substrate substrate; as well as A plurality of pixel unit structures are arranged in an array on the substrate along a first direction and a second direction, The pixel unit structure comprises a first sub-pixel group and a second sub-pixel group adjacent to each other in the second direction, the first sub-pixel group comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, and the second sub-pixel group comprises a first color sub-pixel, a second color sub-pixel and two third color sub-pixels. Two of the first color sub-pixels and two of the second color sub-pixels in the first sub-pixel group and the second sub-pixel group are alternately arranged in the second direction to form a third sub-pixel group. The three third color sub-pixels in the first sub-pixel group and the second sub-pixel group are arranged along the second direction to form a fourth sub-pixel group. The span of the third subpixel group in the second direction is greater than the span of the fourth subpixel group in the second direction, and the first distance between two adjacent fourth subpixel groups of the pixel unit structures in the second direction is greater than the second distance between two third subpixel groups.

2. The display substrate according to claim 1, characterized in that: The first color sub-pixel includes a first anode and a first light-emitting layer, the second color sub-pixel includes a second anode and a second light-emitting layer, and the third color sub-pixel includes a third anode and a third light-emitting layer. The three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group are integrated into one.

3. The display substrate according to claim 2, characterized in that: The three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group are formed by using the same mask opening.

4. The display substrate according to any one of claims 1 to 3, characterized in that: In the first sub-pixel group, a first virtual straight line passing through a center of the third color sub-pixel and extending along the first direction is located between the first color sub-pixel and the second color sub-pixel.

5. The display substrate according to claim 4, characterized in that: In the first sub-pixel group, the distance between the first virtual straight line and the first color sub-pixel is equal to the distance between the first virtual straight line and the second color sub-pixel.

6. The display substrate according to any one of claims 1 to 3, characterized in that: In the second sub-pixel group, the center of one of the two third color sub-pixels and the center of the first color sub-pixel are located on a second virtual straight line extending along the first direction, and the center of one of the two third color sub-pixels and the center of the second color sub-pixel are located on a third virtual straight line extending along the first direction.

7. The display substrate according to any one of claims 1 to 3, characterized in that: Also includes: A first microlens is located on a side of the first color sub-pixel away from the substrate. A second microlens is located on a side of the second color sub-pixel away from the substrate. The third microlens is located at a side of the third color sub-pixel away from the substrate.

8. The display substrate according to claim 7, characterized in that: The orthographic projection of the effective light emitting area of ​​the first color sub-pixel on the substrate falls within the orthographic projection of the first microlens on the substrate. The orthographic projection of the effective light emitting area of ​​the second color sub-pixel on the base substrate falls within the orthographic projection of the second microlens on the base substrate. The orthographic projection of the effective light emitting area of ​​the third color sub-pixel on the base substrate falls within the orthographic projection of the third microlens on the base substrate.

9. The display substrate according to claim 8, characterized in that: The edge of the orthographic projection of the effective light emitting area of ​​the first color sub-pixel on the base substrate is tangent to the edge of the orthographic projection of the first microlens on the base substrate. The edge of the orthographic projection of the effective light emitting area of ​​the second color sub-pixel on the base substrate is tangent to the edge of the orthographic projection of the second microlens on the base substrate. The edge of the orthographic projection of the effective light emitting area of ​​the third color sub-pixel on the base substrate is tangent to the edge of the orthographic projection of the third microlens on the base substrate.

10. The display substrate according to any one of claims 1 to 3, characterized in that: An area of ​​the third color sub-pixel in the first sub-pixel group is greater than an area of ​​the third color sub-pixel in the second sub-pixel group.

11. The display substrate according to claim 10, characterized in that: The area of ​​the first color sub-pixel in the first sub-pixel group is smaller than the area of ​​the first color sub-pixel in the second sub-pixel group, An area of ​​the second color sub-pixel in the first sub-pixel group is smaller than an area of ​​the second color sub-pixel in the second sub-pixel group.

12. The display substrate according to claim 10, characterized in that: A fourth virtual straight line passing through the center of the third color subpixel in the first subpixel group and extending along the second direction is located on a side of a fifth virtual straight line passing through the center of the third color subpixel in the second subpixel group and extending along the second direction close to the first color subpixel.

13. The display substrate according to claim 11, characterized in that: A sixth virtual straight line passing through the centers of the first color sub-pixel and the second color sub-pixel in the first sub-pixel group and extending along the second direction is located on a side away from the third color sub-pixel of a seventh virtual straight line passing through the centers of the first color sub-pixel and the second color sub-pixel in the second sub-pixel group and extending along the second direction.

14. The display substrate according to claim 2 or 3, characterized in that: Also includes: A pixel defining layer is located on the substrate. The first color sub-pixel further includes a first pixel opening located in the pixel defining layer, and the first light-emitting layer contacts the first anode through the first pixel opening. The second color sub-pixel further includes a second pixel opening located in the pixel defining layer, and the second light emitting layer contacts the second anode through the second pixel opening. The third color sub-pixel further includes a third pixel opening located in the pixel defining layer, and the third light emitting layer contacts the third anode through the third pixel opening.

15. The display substrate according to claim 14, characterized in that: The first pixel opening, the second pixel opening and the third pixel opening are all rectangular in shape.

16. The display substrate according to any one of claims 1 to 3, characterized in that: The first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a blue sub-pixel.

17. The display substrate according to any one of claims 1 to 3, characterized in that: Also includes: Spacer, The orthographic projection of the spacer on the base substrate is located between the orthographic projections of the third color sub-pixel of the first sub-pixel group and the third color sub-pixel of the second sub-pixel group in the pixel unit structure on the base substrate.

18. A display substrate, characterized in that: include: substrate substrate; A plurality of sub-pixels are located on the substrate. The plurality of sub-pixels include first sub-pixel columns and second sub-pixel columns alternately arranged along a first direction, the first sub-pixel columns include first sub-pixel groups cyclically and equidistantly arranged along a second direction, the first sub-pixel groups include a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, The second sub-pixel column includes a second sub-pixel group arranged cyclically and equidistantly along the second direction, the second sub-pixel group includes a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, The first subpixel column and the second subpixel column are staggered so that a virtual straight line passing through the center of the third color subpixel in the first subpixel group and extending along the first direction is located between the first color subpixel and the second color subpixel in the second subpixel group.

19. The display substrate according to claim 18, characterized in that: The arrangement order of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel in the first sub-pixel group is the same as the arrangement order of the first color sub-pixel, the second color sub-pixel and the third color sub-pixel in the second sub-pixel group.

20. The display substrate according to claim 18, characterized in that: The first color sub-pixel is a red sub-pixel, the second color sub-pixel is a green sub-pixel, and the third color sub-pixel is a blue sub-pixel.

21. A display device, characterized in that: Comprising the display substrate according to any one of claims 1-20.

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