Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. In the display substrate, a first sub-pixel group comprises one first-color sub-pixel, one second-color sub-pixel and one third-color sub-pixel; a second sub-pixel group comprises one first-color sub-pixel, one 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 a 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 in a second direction to form a fourth sub-pixel group; the span of the third sub-pixel group in the second direction is greater than that of the fourth sub-pixel group in the second direction; and a first distance between two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than a second distance between the two third sub-pixel groups thereof. Therefore, the display substrate can improve the aperture ratio of pixels.

Description

Display substrate and display device

[0001] The present application claims priority to Chinese Patent Application No. 202410832284.4, filed on June 25, 2024, the disclosure of which is incorporated herein in its entirety as part of the present application. TECHNICAL FIELD

[0002] Embodiments of the present disclosure relate to a display substrate and a display device. BACKGROUND

[0003] Organic light-emitting diode (OLED) display devices have become a research hotspot and a direction of technical development for current manufacturers due to their advantages of wide color gamut, high contrast, thin design, self-luminous, bright color, low power consumption, and wide viewing angle. The light-emitting principle of an organic light-emitting diode display device 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 between the anode and the cathode; during light-emitting display, electrons and holes are injected into an electron transport layer and a hole transport layer from the cathode and the anode, respectively, and then the electrons and the holes migrate from the electron transport layer and the hole transport layer to the organic light-emitting layer, respectively, and meet in the organic light-emitting layer to form excitons and emit visible light.

[0004] After decades of development, organic light-emitting diode display devices have gradually become mature, especially in terms of light-emitting brightness, device efficiency, and operating life, and the device structure of the organic light-emitting diode display device has also been improved to some extent. However, there are still some problems with the organic light-emitting diode display device. For example, in terms of operating life, although the operating life of red and green organic light-emitting elements has been improved, the operating life of blue organic light-emitting elements is relatively low, thereby affecting the further development of the organic light-emitting diode display device; in terms of device efficiency, although the device efficiency has been improved compared to before, the external quantum efficiency (EQE) is still only about 20%, thereby limiting the brightness of the organic light-emitting diode display device.

[0005] On the other hand, with the development of products such as notebook computers and vehicle displays towards miniaturization and lightness, the market demand for high-efficiency, high-brightness, and low-power display devices is also becoming more and more intense. Under such a background, the organic light-emitting diode display device is facing greater and greater challenges due to its own problems. SUMMARY

[0006] The display substrate and the display device provided by the embodiments of the present disclosure. The display substrate increases one 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 is increased by 50%, and the aperture ratio of the sub-pixel is increased by 16.7%. In addition, in the pixel unit structure, in the third sub-pixel group, the first color sub-pixel and the second color sub-pixel are arranged alternately, so that the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the manufacturing requirements of the fine metal mask plate; in the fourth sub-pixel group, only one third color sub-pixel is arranged in the first sub-pixel group, so that the distance between the third color sub-pixel in the first sub-pixel group and the adjacent third color sub-pixel is also large enough to meet the manufacturing requirements of the fine metal mask plate. Therefore, the display substrate can improve the pixel aperture ratio while meeting the manufacturing requirements of the fine metal mask plate.

[0007] The display substrate provided by at least one embodiment of the present disclosure comprises: a substrate; and a plurality of pixel unit structures arranged in a first direction and a second direction on the substrate, each of the pixel unit structures comprises a first sub-pixel group and a second sub-pixel group arranged adjacent in the second direction, the first sub-pixel group comprises one first color sub-pixel, one second color sub-pixel and one third color sub-pixel, the second sub-pixel group comprises one first color sub-pixel, one 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 arranged alternately 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 in 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 two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than the second distance between two third sub-pixel groups.

[0008] For example, in the display substrate provided by an embodiment of the present disclosure, the first color sub-pixel comprises a first anode and a first light-emitting layer, the second color sub-pixel comprises a second anode and a second light-emitting layer, the third color sub-pixel comprises 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.

[0009] For example, in the 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 the same mask opening.

[0010] For example, in the display substrate provided by 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.

[0011] For example, in the display substrate provided by 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.

[0012] For example, in the display substrate provided by an embodiment of the present disclosure, in the second sub-pixel group, the center of one of the two third color sub-pixels is located on a second virtual straight line extending along the first direction and the center of the first color sub-pixel, and the center of one of the two third color sub-pixels is located on a third virtual straight line extending along the first direction and the center of the second color sub-pixel.

[0013] For example, the display substrate provided by an embodiment of the present disclosure further includes: a first microlens located on a side of the first color sub-pixel away from the substrate, a second microlens located on a side of the second color sub-pixel away from the substrate, and a third microlens located on a side of the third color sub-pixel away from the substrate.

[0014] For example, in the display substrate provided by an embodiment of the present disclosure, the orthogonal projection of the effective light-emitting area of the first color sub-pixel on the substrate falls within the orthogonal projection of the first microlens on the substrate, the orthogonal projection of the effective light-emitting area of the second color sub-pixel on the substrate falls within the orthogonal projection of the second microlens on the substrate, and the orthogonal projection of the effective light-emitting area of the third color sub-pixel on the substrate falls within the orthogonal projection of the third microlens on the substrate.

[0015] For example, in the display substrate provided by an embodiment of the present disclosure, the edge of the orthogonal projection of the effective light-emitting area of the first color sub-pixel on the substrate is tangent to the edge of the orthogonal projection of the first microlens on the substrate, the edge of the orthogonal projection of the effective light-emitting area of the second color sub-pixel on the substrate is tangent to the edge of the orthogonal projection of the second microlens on the substrate, and the edge of the orthogonal projection of the effective light-emitting area of the third color sub-pixel on the substrate is tangent to the edge of the orthogonal projection of the third microlens on the substrate.

[0016] For example, in the display substrate provided by an embodiment of the present disclosure, the area of the third color sub-pixel in the first sub-pixel group is greater than the area of the third color sub-pixel in the second sub-pixel group.

[0017] For example, in the display substrate provided by an embodiment of the present disclosure, 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, and the area of the second color sub-pixel in the first sub-pixel group is smaller than the area of the second color sub-pixel in the second sub-pixel group.

[0018] For example, in the display substrate provided by an embodiment of the present disclosure, a fourth virtual straight line extending through the center of the third color sub-pixel in the first sub-pixel group and in the second direction is located on the side close to the first color sub-pixel of a fifth virtual straight line extending through the center of the third color sub-pixel in the second sub-pixel group and in the second direction.

[0019] For example, in the display substrate provided by an embodiment of the present disclosure, a sixth virtual straight line extending through the center of the first color sub-pixel and the second color sub-pixel in the first sub-pixel group and in the second direction is located on the side away from the third color sub-pixel of a seventh virtual straight line extending through the center of the first color sub-pixel and the second color sub-pixel in the second sub-pixel group and in the second direction.

[0020] For example, the display substrate provided by an embodiment of the present disclosure further comprises a pixel definition layer located on the substrate, the first color sub-pixel further comprises a first pixel opening located in the pixel definition layer, the first light-emitting layer is in contact with the first anode through the first pixel opening, the second color sub-pixel further comprises a second pixel opening located in the pixel definition layer, the second light-emitting layer is in contact with the second anode through the second pixel opening, and the third color sub-pixel further comprises a third pixel opening located in the pixel definition layer, the third light-emitting layer is in contact with the third anode through the third pixel opening.

[0021] For example, in the display substrate provided by an embodiment of the present disclosure, the shapes of the first pixel opening, the second pixel opening, and the third pixel opening are all rectangles.

[0022] For example, in the 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.

[0023] For example, the display substrate provided by an embodiment of the present disclosure further comprises a spacer, a projection of the spacer on the substrate is located between 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 sub-pixel unit structure on the substrate.

[0024] The display substrate provided by at least one of the embodiments of the present disclosure comprises: a substrate; and a plurality of sub-pixels on the substrate, the plurality of sub-pixels comprising a first sub-pixel column and a second sub-pixel column arranged alternately along a first direction, the first sub-pixel column comprising a first sub-pixel group arranged cyclically and equidistantly along a second direction, the first sub-pixel group comprising a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, the second sub-pixel column comprising a second sub-pixel group arranged cyclically and equidistantly along the second direction, the second sub-pixel group comprising 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 being arranged staggeredly so that a virtual straight line extending through the center of the third color sub-pixel in the first sub-pixel group and along the first direction is located between the first color sub-pixel and the second color sub-pixel in the second sub-pixel group.

[0025] For example, in the display substrate provided by an embodiment of the present disclosure, 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.

[0026] For example, in the 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.

[0027] The display device provided by at least one of the embodiments of the present disclosure comprises the display substrate provided by any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] 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 described below only relate to some of the embodiments of the present disclosure, but not limit the present disclosure.

[0029] FIG. 1 is a schematic diagram of a pixel arrangement structure on a display substrate;

[0030] FIG. 2 is a schematic diagram of a cross section of an organic light emitting diode display substrate;

[0031] FIG. 3 is a schematic diagram of a plane of a fine metal mask;

[0032] FIG. 4 is a schematic diagram of a partial enlarged view of the fine metal mask shown in FIG. 3;

[0033] FIG. 5 is a schematic diagram of a pixel arrangement structure on another display substrate;

[0034] FIG. 6 is a plan view of a display substrate according to an embodiment of the present disclosure;

[0035] FIG. 7 is a partial cross-sectional view of a display substrate according to an embodiment of the present disclosure;

[0036] FIG. 8 is a plan view of another display substrate according to an embodiment of the present disclosure;

[0037] FIG. 9 is a schematic view of the size relationship between a sub-pixel and a microlens in a display substrate according to an embodiment of the present disclosure;

[0038] FIG. 10 is a graph of the size relationship between a sub-pixel and a microlens in a display substrate according to an embodiment of the present disclosure and the gain effect;

[0039] FIG. 11 is a schematic view of a microlens in a display substrate according to an embodiment of the present disclosure;

[0040] FIG. 12 is a plan view of another display substrate according to an embodiment of the present disclosure;

[0041] FIG. 13 is a schematic view of a display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present disclosure.

[0043] Unless otherwise defined, technical terms or scientific terms used in the present disclosure shall have the ordinary meaning commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second” and similar terms used in the present disclosure do not denote any order, quantity or importance, but are used to distinguish different components. The terms “include” or “contain” and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects.

[0044] The terms "parallel," "perpendicular," and "same" as used in the embodiments of the present disclosure include not only the strict "parallel," "perpendicular," and "same," but also "approximately parallel," "approximately perpendicular," and "approximately same" that include certain errors, taking into account the measurement and the error related to the measurement of a specific value (for example, the limitation of a measurement system), and represent an acceptable deviation range for a specific value determined by a person of ordinary skill in the art. For example, "approximately" can represent within one or more standard deviations, or within 10% or 5% of the value. In the following description of the embodiments of the present disclosure, when the quantity of a component is not specifically indicated, it means that the component can be one or more, or can be understood as at least one. "At least one" means one or more, and "a plurality of" means at least two. "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, one patterning process). Here, "same layer" does not always mean that the thicknesses of the multiple film layers are the same or the heights of the multiple film layers in a cross-sectional view are the same.

[0045] With the increasing demand for display devices with high efficiency, high brightness, and low power consumption, the use of micro lenses to improve the light extraction efficiency of organic light-emitting diode display devices has entered the field of view 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%.

[0046] In research, the inventors of the present application noticed that although the scheme using micro lenses has excellent light extraction efficiency, this scheme needs to meet the following requirements to obtain good results, as follows:

[0047] First, the sub-pixels in the organic light-emitting diode display device and the micro lenses need to be one-to-one correspondingly arranged, that is, one sub-pixel needs to be correspondingly arranged with one micro lens. It is found through simulation 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 does not significantly improve, and does not have the effect of improving the brightness and light extraction efficiency.

[0048] Second, in the case of one-to-one correspondence between the sub-pixels and the micro lenses, 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 greater than the opening size of the sub-pixel, that is, greater than the size of the effective light-emitting area of the sub-pixel. For example, when the planar 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 greater than the length of the diagonal of the opening of the sub-pixel.

[0049] If a conventional pixel arrangement structure is used, due to the size and distance limitations, a one-to-one corresponding arrangement of the micro-lens with a size larger than the opening size of the sub-pixel cannot be formed above the sub-pixel. For example, FIG. 1 is a schematic diagram of a pixel arrangement structure on a display substrate. As shown in FIG. 1, 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 arranged in pairs. As shown in FIG. 1, the size of the blue sub-pixel 23 in the vertical direction is relatively large, and the distance between the adjacent red sub-pixel 21 and green sub-pixel 22 in the horizontal direction is relatively small, so that a one-to-one corresponding arrangement of the micro-lens with a size larger than the opening size of the blue sub-pixel 23 cannot be formed above the blue sub-pixel 23. Therefore, the pixel arrangement structure needs to be redesigned for the organic light-emitting diode display device using the micro-lens.

[0050] FIG. 2 is a schematic diagram of a cross section of an organic light-emitting diode display substrate; FIG. 3 is a schematic diagram of a plane of a fine metal mask; and FIG. 4 is a schematic diagram of a partial enlarged view of the fine metal mask shown in FIG. 3. As shown in FIG. 2, the organic light-emitting diode display substrate 10 includes an 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 cover layer 19, and a thin film encapsulation layer 20 arranged in layers; 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 correspondingly to the red hole transport layer 15R, the green hole transport layer 15G, and the blue hole transport layer 15B. In the manufacturing process of the above-mentioned 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 manufactured using three fine metal masks (FMMs).

[0051] As shown in FIG. 3, the fine metal mask 31 includes mask openings 32 and ribs 33 between the mask openings 32. The mask openings 32 of the fine metal mask 31 can be used for evaporation to form one of the above-mentioned red light-emitting layer 16E, green light-emitting layer 16G, and blue light-emitting layer 16B. Generally, the fine metal mask 31 is usually made of a low-expansion iron-nickel alloy material, for example, Invar 36, and the thickness is less than 50 microns. In order to ensure the strength of the fine metal mask, as shown in FIG. 4, the opening pitch (i.e., the size of the rib) of the fine metal mask 31 needs to be greater than 16 microns. For example, Rib1 and Rib2 in FIG. 4 need to be greater than 16 microns.

[0052] On the other hand, due to the alignment error in the evaporation process, the position precision error of the substrate to be evaporated, and other reasons, 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 single side needs to be 9 microns larger; superimposed on the size limit of the opening distance, the interval of the sub-pixels of the same color needs to be greater than 34 microns, thus greatly reducing the opening rate of the sub-pixel.

[0053] Figure 5 is a schematic diagram of a pixel arrangement structure on another display substrate. In the case of meeting the one-to-one correspondence setting of sub-pixels and micro-lenses and the size of the micro-lens being larger than the opening size of the sub-pixel, one blue sub-pixel 23 is added in the pixel unit composed of a red sub-pixel 21, a green sub-pixel 22 and a blue sub-pixel 23, and the four sub-pixels are set in one-to-one correspondence with four micro-lenses 40, which can improve the pixel opening rate on the one hand, and can also increase the operating life of the blue sub-pixel on the other hand. However, the blue sub-pixel of the display substrate shown in Figure 5 will face the problem of being unable to be made, and the specific reasons are as follows:

[0054] As shown in Figure 5, 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 the sub-pixels of the same color are arranged with sub-pixels of other colors, the interval of the red sub-pixels 21 and the green sub-pixels 22 in the first sub-pixel column 11 can meet the requirements of the fine metal mask plate. However, in the second sub-pixel column 12, no matter whether the organic light-emitting layer of one blue sub-pixel 23 is made by using one mask opening or whether the organic light-emitting layers of multiple adjacent blue sub-pixels 23 share one mask opening, the distance between the organic light-emitting layers made by using different mask openings cannot meet the requirements of the fine metal mask plate, and thus it cannot be made. For example, in a product, the opening sizes of the red sub-pixels 21, the green sub-pixels 22 and the blue sub-pixels 23 are all 30.2 microns, and the opening interval of adjacent sub-pixels is 22 microns, so the opening interval between adjacent red sub-pixels 21 is 74.2 microns, the opening interval between adjacent green sub-pixels 22 is 74.2 microns, but the opening interval between adjacent blue sub-pixels 23 is only 22 microns. It should be noted that if the distance between adjacent blue sub-pixels 23 in Figure 5 is forced to be greater than 34 microns, the resolution and the opening rate of the display panel will be greatly reduced.

[0055] To this end, the display substrate provided by the embodiments of the present disclosure includes a substrate and a plurality of pixel unit structures; the plurality of pixel unit structures are arranged on the substrate in a first direction and a second direction. Each pixel unit structure includes a first sub-pixel group and a second sub-pixel group arranged adjacently in the second direction, the first sub-pixel group includes one first color sub-pixel, one second color sub-pixel and one third color sub-pixel, the second sub-pixel group includes one first color sub-pixel, one 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 arranged alternately 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 in 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 increases one third color sub-pixel in the second sub-pixel group, thereby increasing the aperture ratio of the third color sub-pixel in the display substrate by 50%, and increasing the aperture ratio of the sub-pixel by 16.7%. In addition, in the pixel unit structure, in the third sub-pixel group, the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the manufacturing requirements of the fine metal mask. In the fourth sub-pixel group, only one third color sub-pixel is arranged in the first sub-pixel group, so the distance between the third color sub-pixel in the first sub-pixel group and the adjacent third color sub-pixel is also large enough to meet the manufacturing requirements of the fine metal mask. Thus, the display substrate can improve the pixel aperture ratio while meeting the manufacturing requirements of the fine metal mask.

[0056] The embodiments of the present disclosure also provide a display device including the display substrate described above. Thus, the display device can improve the pixel aperture ratio while meeting the manufacturing requirements of the fine metal mask.

[0057] The display substrate and the display device provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0058] FIG. 6 is a schematic plan view of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 6, the display substrate 100 includes a substrate 110 and a plurality of pixel unit structures 120; the plurality of pixel unit structures 120 are arranged on the substrate 110 in a first direction X and a second direction Y. For example, the pixel unit structure 120 described above can be regarded as a repeating unit on the substrate 110, which fills the entire substrate 110 by being arranged in the first direction X and the second direction Y.

[0059] As shown in FIG. 6, each pixel unit structure 120 includes a first sub-pixel group 121 and a second sub-pixel group 122 arranged adjacently in the second direction, the first sub-pixel group 121 includes one first color sub-pixel 210, one second color sub-pixel 220 and one third color sub-pixel 230, the second sub-pixel group 122 includes one first color sub-pixel 210, one second color sub-pixel 220 and two third color sub-pixels 230; two first color sub-pixels 210 and two second color sub-pixels 220 in the first sub-pixel group 121 and the second sub-pixel group 122 are arranged alternately in the second direction to form a third sub-pixel group 123; 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.

[0060] It should be noted that the first sub-pixel group and the second sub-pixel group described above are a division of all sub-pixels in the pixel unit structure, 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 described above are another division of all sub-pixels in the pixel unit structure, 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 be overlapped, 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 be overlapped, 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 described above can be regarded as two sub-pixel columns formed by the sub-pixels in a pixel unit structure.

[0061] As shown in FIG. 6, 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 pixel unit structures 120 adjacent in the second direction is greater than the second distance D2 between two third sub-pixel groups 123.

[0062] In the display substrate provided in the embodiments of the present disclosure, one third color sub-pixel is added in the second sub-pixel group, the number of third color sub-pixels in one pixel unit structure increases from two to three, and the number of sub-pixels increases from six to seven, so that the aperture ratio of the third color sub-pixels in the display substrate increases by 50%, and the aperture ratio of the sub-pixels increases by 16.7%, thereby increasing the brightness and service life of the product.

[0063] On the other hand, since the plurality of pixel unit structures are arranged in 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 the 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 arranged alternately, the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the manufacturing requirement of the fine metal mask plate; and for the two adjacent fourth sub-pixel groups in the second direction, the three third color sub-pixels in one fourth sub-pixel group can be manufactured by 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 manufacturing requirement of the fine metal mask plate. Thus, the display substrate can improve the pixel aperture ratio while meeting the manufacturing requirement of the fine metal mask plate.

[0064] In some examples, as shown in FIG. 6, the first distance D1 between the two fourth sub-pixel groups 124 of the 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 the first color sub-pixel 210 or the second color sub-pixel 220 in the second direction, so as to better ensure that the first distance between the two fourth sub-pixel groups is large enough to meet the manufacturing requirement of the fine metal mask plate.

[0065] In some examples, as shown in FIG. 6, in the above-mentioned display substrate, the first distance between the two adjacent fourth sub-pixel groups 124 is also greater than the distance between the adjacent first color sub-pixel 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 substrate 110 is less 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-mentioned pixel arrangement structure can make each third color sub-pixel correspond to a circular microlens.

[0066] FIG. 7 is a schematic view of a partial cross-section of a display substrate according to an embodiment of the present disclosure. As shown in FIG. 7, 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 can 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 to drive the first light-emitting layer 214 to emit light of the 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 to drive the second light-emitting layer 224 to emit light of the 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 to drive the third light-emitting layer 234 to emit light of the third color.

[0067] For example, the first color can be red, the second color can be green, and the third color can be blue. Of course, embodiments of the present disclosure include but are not limited to this.

[0068] As shown in FIG. 6, the three third light-emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 are integrated, i.e., the three third color sub-pixels 230 in the fourth sub-pixel group 124 share an integrated third light-emitting layer. Thus, the distance between the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group is small and does not affect their formation, as long as the distance between adjacent fourth sub-pixel groups can meet the manufacturing 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 independently emit light and display.

[0069] 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 can be manufactured using the same mask opening, thereby being integrated. The mask opening can be a mask opening of a fine metal mask.

[0070] In some examples, as shown in FIG. 6, in the first sub-pixel group 121, a 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. Thus, the distribution of the three color sub-pixels in the first sub-pixel group is relatively uniform, thereby when the first sub-pixel group displays as a pixel point, a better display effect can be achieved. It should be noted that the center of the third color sub-pixel is the geometric center of the effective light-emitting area of the third color sub-pixel.

[0071] In some examples, as shown in FIG. 6, in the first sub-pixel group 121, the first virtual straight line 201 is equidistant from the first color sub-pixel 210 and the second color sub-pixel 220. Thus, when the first sub-pixel group is displayed as a pixel point, a better display effect can be achieved.

[0072] It is worth noting that through display simulation of the pixel structure, it is found that the display substrate adopting the pixel arrangement structure shown in FIG. 6 has a relatively neat edge when displaying a pattern with a slanted edge (not parallel to the first direction and the second direction), without color edges and jagged edges and the like.

[0073] In some examples, when the opening size of the first color sub-pixel 210, the second color sub-pixel 220 and the third color sub-pixel 230 is all a rectangle with a side length of 30.2 microns, and the opening distance between adjacent sub-pixels is 22 microns, the opening distance between adjacent first color sub-pixels 210 is 74.2 microns, the opening distance between adjacent second color sub-pixels 220 is 74.2 microns, and the distance between adjacent fourth sub-pixel groups 124 is 48.1 microns, that is, the opening distance between two third color sub-pixels 230 made by different mask openings is 48.1 microns, all meet the manufacturing requirements of the fine metal mask plate.

[0074] It is worth noting that although in the embodiment shown in FIG. 6, the 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, the embodiments of the present disclosure include but are not limited to this, the third color sub-pixel in the first sub-pixel group can also be arranged closer to the second sub-pixel group, so that the distance between the adjacent two fourth sub-pixel groups is larger.

[0075] In some examples, as shown in FIG. 6, 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 the 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 the third virtual straight line 203 extending along the first direction X. Thus, the distribution of the sub-pixels in the second sub-pixel group is more uniform, 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.

[0076] In some examples, as shown in FIG. 6, 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 a side of the first color sub-pixel 210 away from the substrate 110, the second microlens 132 is located on a side of the second color sub-pixel 220 away from the substrate 110, and the third microlens 133 is located on a side of the third color sub-pixel 230 away from the substrate 110. That is, the first microlens and the first color sub-pixel are arranged one-to-one, 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 one-to-one, 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 one-to-one, and are located on the light-emitting side of the corresponding third color sub-pixel. In this way, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, through the microlens.

[0077] In some examples, as shown in FIG. 6, the orthogonal projection of the effective light-emitting area of the first color sub-pixel 210 on the substrate 110 falls within the orthogonal projection of the first microlens 131 on the substrate 110; the orthogonal projection of the effective light-emitting area of the second color sub-pixel 220 on the substrate 110 falls within the orthogonal projection of the second microlens 132 on the substrate 110; and the orthogonal projection of the effective light-emitting area of the third color sub-pixel 230 on the substrate 110 falls within the orthogonal projection of the third microlens 133 on the substrate 110. In this way, the display substrate can ensure that the first microlens, the second microlens, and the third microlens have better gain effect.

[0078] It should be noted that the effective light-emitting area described above can be defined by the pixel opening of each sub-pixel. Referring to FIG. 7, the display substrate 100 further includes a pixel definition layer 140 located on the substrate 110; the first color sub-pixel 210 includes a first pixel opening 141 located in the pixel definition 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 definition layer 140, and the second light-emitting layer 224 is arranged in contact with the second anode 222 through the second pixel opening 142; and the third color sub-pixel 230 includes a third pixel opening 143 located in the pixel definition layer 140, and the third light-emitting layer 234 is arranged in contact with the third anode 232 through the third pixel opening 143.

[0079] In some examples, as shown in FIG. 6, 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 orthogonal projections of the first pixel opening 141, the second pixel opening 142, and the third pixel opening 143 on the substrate 110 are all rectangular.

[0080] In some examples, as shown in FIG. 6, the edge of the normal 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 normal projection of the first microlens 131 on the substrate 110, the edge of the normal 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 normal projection of the second microlens 132 on the substrate 110, and the edge of the normal 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 normal projection of the third microlens 133 on the substrate 110. In this way, the display substrate can fully utilize the area of the display substrate while ensuring that each microlens has a good gain effect.

[0081] For example, as shown in FIG. 6, the normal projection of the effective light-emitting area of the first color sub-pixel 210 on the substrate 110 is rectangular, and the normal projection of the first microlens 131 on the substrate 110 is circular, with a diameter greater than the length of the diagonal of the normal projection of the effective light-emitting area of the first color sub-pixel 210 on the substrate 110.

[0082] For example, as shown in FIG. 6, the normal projection of the effective light-emitting area of the second color sub-pixel 220 on the substrate 110 is rectangular, and the normal projection of the second microlens 132 on the substrate 110 is circular, with a diameter greater than the length of the diagonal of the normal projection of the effective light-emitting area of the second color sub-pixel 220 on the substrate 110.

[0083] For example, as shown in FIG. 6, the normal projection of the effective light-emitting area of the third color sub-pixel 230 on the substrate 110 is rectangular, and the normal projection of the third microlens 133 on the substrate 110 is circular, with a diameter greater than the length of the diagonal of the normal projection of the effective light-emitting area of the third color sub-pixel 230 on the substrate 110.

[0084] In some examples, as shown in FIG. 6, the display substrate 100 further includes a spacer 160, the normal projection of which on the substrate 110 is located between 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, so that the spacer is arranged using the space inside the pixel unit structure 120, so that the pixel unit structures 120 can be closely arranged, and the spacer does not need to be provided with a placement space between the pixel unit structures 120, thereby avoiding the influence of the spacer on the aperture ratio.

[0085] FIG. 8 is a plan view of another display substrate according to an embodiment of the present disclosure. As shown in FIG. 8, the display substrate 100 includes a substrate 110 and a plurality of pixel unit structures 120 arranged on the substrate 110 in a first direction X and a second direction Y. For example, the pixel unit structure 120 described above can be regarded as a repeating unit on the substrate 110, which fills the entire substrate 110 by being arranged in the first direction X and the second direction Y.

[0086] As shown in FIG. 8, each pixel unit structure 120 includes a first sub-pixel group 121 and a second sub-pixel group 122 arranged adjacent to each other in the second direction, the first sub-pixel group 121 including one first color sub-pixel 210, one second color sub-pixel 220 and one third color sub-pixel 230, and the second sub-pixel group 122 including one first color sub-pixel 210, one 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 arranged alternately in the second direction to form a third sub-pixel group 123; and the three third color sub-pixels 230 in the first sub-pixel group 121 and the second sub-pixel group 122 are arranged in the second direction to form a fourth sub-pixel group 124.

[0087] As shown in FIG. 8, 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. 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 embodiments of the present disclosure refers to the area of the effective light-emitting region or the pixel opening of the sub-pixel, which can be referred to the related description of FIG. 7.

[0088] In the display substrate provided by the embodiments of the present disclosure, one third color sub-pixel is added in the second sub-pixel group, the number of third color sub-pixels in one pixel unit structure increases from two to three, and the number of sub-pixels increases from six to seven, 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, the area of the third color sub-pixel in the first sub-pixel group is greater than the area of the third color sub-pixel in the second sub-pixel group, that is, the display substrate provided by the embodiments of the present disclosure increases the area of the third color sub-pixel in the first sub-pixel group, so as to further improve the aperture ratio of the third color sub-pixel in the display substrate, thereby increasing the operation life of the product.

[0089] In another aspect, since the plurality of pixel unit structures are arranged in 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 the 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 arranged alternately, the distance between the two adjacent first color sub-pixels or the two adjacent second color sub-pixels is large enough to meet the manufacturing requirements of the fine metal mask plate; and for the two adjacent fourth sub-pixel groups in the second direction, the three third color sub-pixels in one fourth sub-pixel group can be manufactured by 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 manufacturing requirements of the fine metal mask plate. Thus, the display substrate can improve the pixel aperture ratio while meeting the manufacturing requirements of the fine metal mask plate.

[0090] For example, the first color can be red, the second color can be green, and the third color can be blue. Of course, the embodiments of the present disclosure include but are not limited to this.

[0091] In some examples, as shown in FIG. 8, 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 better gain effect.

[0092] For example, as shown in FIG. 8, since 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, 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 greater 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.

[0093] In some examples, as shown in FIG. 8, a fourth virtual straight line 204 extending through the center of the third color sub-pixel 230 in the first sub-pixel group 121 and along the second direction Y is located on a side of a fifth virtual straight line 205 extending through the center of the third color sub-pixel 230 in the second sub-pixel group 122 and along the second direction Y, which is 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 more biased toward the edge of the pixel unit structure 120 close to the first color sub-pixel 210 relative to the center of the third color sub-pixel 230 in the second sub-pixel group 122, so as to make full use of the area on the display substrate.

[0094] In some examples, as shown in FIG. 8, a sixth virtual straight line 206 extending through the center of the first color sub-pixel 210 and the second color sub-pixel 220 in the first sub-pixel group 121 and along the second direction Y is located on a side of a seventh virtual straight line 207 extending through the center of the first color sub-pixel 210 and the second color sub-pixel 220 in the second sub-pixel group 122 and along the second direction Y, which is away from the third color sub-pixel 230. That is, the center of the first color sub-pixel 210 and the second color sub-pixel 220 in the first sub-pixel group 121 is more biased toward the edge of the pixel unit structure 120 close to the first color sub-pixel 210 relative to the center of the first color sub-pixel 210 and the second color sub-pixel 220 in the second sub-pixel group 122, so as to make full use of the area on the display substrate.

[0095] In some examples, as shown in FIG. 8, 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 that 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 that of the second color sub-pixel 220 in the second sub-pixel group 122, because the space in the first sub-pixel group 121 in the display substrate shown in FIG. 6 is limited and has been fully utilized. Thus, the display substrate can increase the area of the third color sub-pixel while making full use of the area.

[0096] As shown in FIG. 8, the three third light-emitting layers 234 of the three third color sub-pixels 230 in the fourth sub-pixel group 124 are integrated, that is, the three third color sub-pixels 230 in the fourth sub-pixel group 124 share an integrated third light-emitting layer. In this way, the distance between the three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group is small and does not affect their formation, as long as the distance between adjacent fourth sub-pixel groups can meet the manufacturing 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 independently emit light and display.

[0097] 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 can be manufactured using the same mask opening, thereby being integrated. The mask opening can be a mask opening of a fine metal mask.

[0098] In some examples, as shown in FIG. 8, the display substrate 100 further includes a spacer 160, a normal projection of which on the substrate 110 is located between 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, so as to use the space inside the pixel unit structure 120 to arrange the spacer, so that the pixel unit structure 120 can be closely arranged, and there is no need to provide a placement space for the spacer between the pixel unit structures 120, thereby avoiding the influence of the spacer on the aperture ratio.

[0099] In some examples, as shown in FIG. 8, the display substrate 100 further includes a first micro-lens 131, a second micro-lens 132, and a third micro-lens 133; the first micro-lens 131 is located on a side of the first color sub-pixel 210 away from the substrate 110, the second micro-lens 132 is located on a side of the second color sub-pixel 220 away from the substrate 110, and the third micro-lens 133 is located on a side of the third color sub-pixel 230 away from the substrate 110. That is, the first micro-lens and the first color sub-pixel are one-to-one correspondence, and are located on the light-emitting side of the corresponding first color sub-pixel, the second micro-lens and the second color sub-pixel are one-to-one correspondence, and are located on the light-emitting side of the corresponding second color sub-pixel, and the third micro-lens and the third color sub-pixel are one-to-one correspondence, and are located on the light-emitting side of the corresponding third color sub-pixel. In this way, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, through the micro-lens.

[0100] FIG. 9 is a schematic view of a size relationship between a sub-pixel and a microlens in a display substrate according to an embodiment of the present disclosure; and FIG. 10 is a curve diagram of a size relationship between a sub-pixel and a microlens in a display substrate and a gain effect according to an embodiment of the present disclosure. As shown in FIG. 9, the sub-pixel can be any one of a first color sub-pixel 210, a second color sub-pixel 220, and a third color sub-pixel 230, and the microlens can be any one of a first microlens 131, a second microlens 132, and a third microlens 133. As shown in FIG. 10, for the microlenses of the same size, the smaller the size of the sub-pixel, the better the gain effect of the microlens; and the larger the size of the sub-pixel, the better the gain effect of the microlens. Then, for the sub-pixels of the same size, the larger the size of the microlens, the better the gain effect of the microlens. Therefore, the size of the microlens provided in the embodiments of the present disclosure can be as large as possible according to the actual process level.

[0101] FIG. 11 is a schematic view of a microlens in a display substrate according to an embodiment of the present disclosure. The microlens shown in FIG. 11 can be any one of the first microlens 131, the second microlens 132, and the third microlens 133 described above. As shown in FIG. 11, the orthographic projection of the microlens on the substrate 110 covers the pixel opening of the corresponding sub-pixel.

[0102] FIG. 12 is a schematic view of another display substrate according to an embodiment of the present disclosure. As shown in FIG. 12, the display substrate 100 includes a substrate 110 and a plurality of sub-pixels 200 on the substrate 110; the plurality of sub-pixels 200 includes first sub-pixel columns 250 and second sub-pixel columns 260 arranged alternately along a first direction X, the first sub-pixel columns 250 include first sub-pixel groups 255 arranged cyclically and equidistantly along a second direction, the first sub-pixel groups 255 include one first color sub-pixel 210, one second color sub-pixel 220, and one third color sub-pixel 230, the second sub-pixel columns 260 include second sub-pixel groups 265 arranged cyclically and equidistantly along the second direction, the second sub-pixel groups 265 include one first color sub-pixel 210, one second color sub-pixel 220, and one third color sub-pixel 230; the first sub-pixel columns 250 and the second sub-pixel columns 260 are arranged staggeredly, 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.

[0103] In the display substrate provided in the embodiments 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 service life of the product. It should be noted that in the case of such staggered arrangement, a plurality of pixel points can be formed by using pixel borrowing technology, and details can be referred to the conventional pixel borrowing technology, which will not be described herein.

[0104] On the other hand, for the first sub-pixel column, two sub-pixels of other colors, i.e., the second color sub-pixel and the third color sub-pixel, are arranged between the two adjacent first color sub-pixels, so that the opening distance between the two adjacent first color sub-pixels can meet the manufacturing requirement of the fine metal mask plate. Similarly, the opening distance between the two adjacent second color sub-pixels and the opening distance between the two adjacent third color sub-pixels can also meet the manufacturing requirement of the fine metal mask plate. Similarly, for the second sub-pixel column, two sub-pixels of other colors, i.e., the second color sub-pixel and the third color sub-pixel, are arranged between the first color sub-pixels, so that the opening distance between the two adjacent first color sub-pixels can meet the manufacturing requirement of the fine metal mask plate. Similarly, the opening distance between the two adjacent second color sub-pixels and the opening distance between the two adjacent third color sub-pixels can also meet the manufacturing requirement of the fine metal mask plate.

[0105] On the other hand, since the first sub-pixel column and the second sub-pixel column are arranged staggered, a virtual straight line passing through the center of the third color sub-pixel in the first sub-pixel group and extending in the first direction is located between the first color sub-pixel and the second color sub-pixel in the second sub-pixel group, so that the opening distance between the two adjacent first color sub-pixels in the first direction, the opening distance between the two adjacent second color sub-pixels in the first direction, and the opening distance between the two adjacent third color sub-pixels in the first direction are also large, and thus can also meet the manufacturing requirement of the fine metal mask plate.

[0106] In some examples, as shown in FIG. 12, in the display substrate described above, the distance between the two adjacent third color sub-pixels 230 is also greater than the distance between the adjacent first color sub-pixel 210 and the second color sub-pixel 220. In addition, the maximum dimension of the third color sub-pixel 230 in a direction parallel to the substrate 110 is less 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 pixel arrangement structure described above can make each third color sub-pixel correspond to a circular microlens.

[0107] In some examples, as shown in FIG. 12, 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 misaligned first and second sub-pixel columns can form a pixel point composed of the first, second, and third color sub-pixels arranged in a triangular shape.

[0108] In some examples, as shown in FIG. 12, the arrangement order of the first, second, and third color sub-pixels 210, 220, and 230 in the first sub-pixel group 121 is the same as the arrangement order of the first, second, and third color sub-pixels 210, 220, and 230 in the second sub-pixel group 122.

[0109] 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.

[0110] In some examples, as shown in FIG. 12, 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 110, the second microlens 132 is located on the side of the second color sub-pixel 220 away from the substrate 110, and the third microlens 133 is located on the side of the third color sub-pixel 230 away from the substrate 110. That is, the first microlens and the first color sub-pixel are arranged one-to-one and located on the light-emitting side of the corresponding first color sub-pixel, the second microlens and the second color sub-pixel are arranged one-to-one and 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 one-to-one and located on the light-emitting side of the corresponding third color sub-pixel. Thus, the display substrate can improve the light extraction efficiency, especially the forward light extraction efficiency, by using the microlenses.

[0111] In some examples, as shown in FIG. 12, 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, second, and third microlenses have good gain effect.

[0112] In some examples, as shown in FIG. 12, the shape of the normal projection of the effective light-emitting area of the first color sub-pixel 210 on the substrate 110 is a rectangle, and the shape of the normal projection of the first microlens 131 on the substrate 110 is a circle, and the diameter of the circle is greater than the length of the diagonal of the normal projection of the effective light-emitting area of the first color sub-pixel 210 on the substrate 110.

[0113] For example, as shown in FIG. 12, the shape of the normal projection of the effective light-emitting area of the second color sub-pixel 220 on the substrate 110 is a rectangle, and the shape of the normal projection of the second microlens 132 on the substrate 110 is a circle, and the diameter of the circle is greater than the length of the diagonal of the normal projection of the effective light-emitting area of the second color sub-pixel 220 on the substrate 110.

[0114] For example, as shown in FIG. 12, the shape of the normal 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 normal projection of the third microlens 133 on the substrate 110 is a circle, and the diameter of the circle is greater than the length of the diagonal of the normal projection of the effective light-emitting area of the third color sub-pixel 230 on the substrate 110.

[0115] In some examples, as shown in FIG. 12, the display substrate 100 further includes a spacer 160, and the normal projection of the spacer 160 on the substrate 110 is located between the first sub-pixel column 250 and the second sub-pixel column 260, and is located in the region surrounded by one first color sub-pixel 210, one second color sub-pixel 220, and one third color sub-pixel, so as to use the space inside the pixel unit structure 120 to set the spacer, so as to avoid the spacer from affecting the aperture ratio.

[0116] FIG. 13 is a schematic diagram of a display device provided by an embodiment of the present disclosure. The display device 500 can include the display substrate 100 provided by any of the above embodiments. Thus, the display device can also meet the manufacturing requirements of the fine metal mask plate while improving the pixel aperture ratio.

[0117] In some examples, the display device described above can be a vehicle-mounted display, a navigation device, or the like. Of course, the embodiments of the present disclosure include but are not limited to this, and the display device described above can also be a television, a digital camera, a mobile phone, a watch, a tablet computer, a notebook computer, a navigation device, or any product or component having a display function.

[0118] The following points need to be explained:

[0119] (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 be referred to the general design.

[0120] (2) The features in the same embodiment and different embodiments of the present disclosure can be combined with each other without conflict.

[0121] The above-described exemplary embodiments of the present disclosure are merely for the purpose of illustration, and should not be construed as limiting the scope of the present disclosure, which is defined by the appended claims.

Claims

1. A display substrate, comprising: Substrate; as well as Multiple pixel unit structures are arrayed 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. 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. The three third-color sub-pixels in the first and second sub-pixel groups 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 two fourth sub-pixel groups of two adjacent pixel unit structures in the second direction is greater than the second distance between two third sub-pixel groups.

2. The display substrate according to claim 1, wherein, The first color sub-pixel includes a first anode and a first emissive layer; the second color sub-pixel includes a second anode and a second emissive layer; and the third color sub-pixel includes a third anode and a third emissive 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, wherein, The three third light-emitting layers of the three third color sub-pixels in the fourth sub-pixel group are formed using the same mask opening.

4. The display substrate according to any one of claims 1-3, wherein, 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.

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

6. The display substrate according to any one of claims 1-5, wherein, In the second sub-pixel group, the center of one of the two third color sub-pixels is located on a second virtual straight line extending along the first direction, and the center of one of the two third color sub-pixels is located on a third virtual straight line extending along the first direction, along with the center of the second color sub-pixel.

7. The display substrate according to any one of claims 1-6, further comprising: A first microlens is located on the side of the first color sub-pixel away from the substrate. The second microlens is located on the side of the second color sub-pixel away from the substrate. The third microlens is located on the side of the third color sub-pixel away from the substrate.

8. The display substrate according to claim 7, wherein, The orthographic projection of the effective light-emitting area of ​​the first color sub-pixel onto the substrate falls within the orthographic projection of the first microlens onto the substrate. The orthographic projection of the effective light-emitting area of ​​the second color sub-pixel onto the substrate falls within the orthographic projection of the second microlens onto the substrate. The orthographic projection of the effective light-emitting area of ​​the third color sub-pixel onto the substrate falls within the orthographic projection of the third microlens onto the substrate.

9. The display substrate according to claim 8, wherein, The edge of the orthographic projection of the effective light-emitting area of ​​the first color sub-pixel onto the substrate is tangent to the edge of the orthographic projection of the first microlens onto the substrate. The edge of the orthographic projection of the effective light-emitting area of ​​the second color sub-pixel onto the substrate is tangent to the edge of the orthographic projection of the second microlens onto the substrate. The edge of the effective light-emitting area of ​​the third color sub-pixel projected onto the substrate is tangent to the edge of the projected image of the third microlens on the substrate.

10. The display substrate according to any one of claims 1-9, wherein, The area of ​​the third color sub-pixel in the first sub-pixel group is greater than the area of ​​the third color sub-pixel in the second sub-pixel group.

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

12. The display substrate according to claim 10, wherein, A fourth virtual 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 the side of the fifth virtual 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.

13. The display substrate according to claim 11, wherein, The sixth virtual line, which passes through the center of the first color sub-pixel and the second color sub-pixel in the first sub-pixel group and extends along the second direction, is located on the side away from the third color sub-pixel of the seventh virtual line, which passes through the center of the first color sub-pixel and the second color sub-pixel in the second sub-pixel group and extends along the second direction.

14. The display substrate according to claim 2 or 3, further comprising: A pixel defining layer is located on the substrate. The first color sub-pixel further includes a first pixel opening located within 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 within the pixel defining layer, and the second light-emitting layer contacts the second anode through the second pixel opening. The third color sub-pixel also includes a third pixel opening located within 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, wherein, 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 1-15, wherein, 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 1-16, further comprising: Spacers, Wherein, the orthogonal projection of the spacer on the substrate is located between the orthogonal 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 on the substrate in the sub-pixel unit structure.

18. A display substrate, comprising: Substrate; Multiple sub-pixels are located on the substrate. The plurality of sub-pixels includes a first sub-pixel column and a second sub-pixel column alternately arranged along a first direction. The first sub-pixel column includes a first sub-pixel group arranged cyclically and at equal intervals along a 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 column includes second sub-pixel groups that are cyclically arranged and equidistant along a second direction. Each second sub-pixel group includes 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 such 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.

19. The display substrate according to claim 18, wherein, 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, wherein, 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 comprising a display substrate according to any one of claims 1-20.

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