Display substrate and display device

Abstract

The utility model discloses a display substrate and a display device. In the display substrate, a plurality of sub-pixels comprise a plurality of sub-pixel groups, and each sub-pixel group comprises a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel comprises a first pixel opening located in a pixel defining layer, the second sub-pixel comprises a second pixel opening located in the pixel defining layer, and the third sub-pixel comprises a third pixel opening located in the pixel defining layer; in each sub-pixel group, the first sub-pixel is located between the second sub-pixel and the third sub-pixel, the plane shape of the opening of the first pixel comprises a first arc edge and a second arc edge, the plane shape of the opening of the second pixel comprises a third arc edge, the third arc edge and the first arc edge are oppositely arranged at an interval, and a first minimum distance D1 is formed between the third arc edge and the first arc edge; the ratio of the difference between the curvature radius of the third arc edge and the curvature radius of the first arc edge to the first minimum distance D1 ranges from 70% to 130%. Therefore, the display substrate improves the color separation phenomenon.

Description

Technical Field

[0001] This disclosure relates to a display substrate and a display device. Background Technology

[0002] With the continuous development of display technology, organic light-emitting diode (OLED) display devices have gradually become the mainstream display devices due to their advantages such as self-illumination, high color gamut, thinness, high contrast, fast response, low energy consumption, and flexible display.

[0003] A typical organic light-emitting diode (OLED) display device includes an anode layer, a pixel defining layer, an emissive layer, and a cathode layer sequentially disposed on a substrate; the pixel defining layer includes a pixel opening that exposes at least a portion of the anode in the anode layer; the emissive layer is disposed in contact with the anode through the pixel opening; the cathode layer is disposed on the side of the emissive layer away from the anode, thereby enabling the emissive layer to emit light under the drive of the anode and the cathode. Utility Model Content

[0004] This disclosure provides a display substrate and a display device. The display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, by optimizing the shape of the non-transparent spacing between the rounded edges of adjacent first and second pixel openings and the spatial frequency of the first and second pixel openings, the diffraction phenomenon is further reduced using the principle of destructive interference, ultimately improving color separation.

[0005] At least one embodiment of this disclosure provides a display substrate, comprising: a substrate; and a pixel defining layer located on one side of the substrate. The display substrate includes a plurality of sub-pixels, the plurality of sub-pixels including a plurality of sub-pixel groups. Each sub-pixel group includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel includes a first pixel opening located in the pixel defining layer. The second sub-pixel includes a second pixel opening located in the pixel defining layer. The third sub-pixel includes a third pixel opening located in the pixel defining layer. In each sub-pixel group, the first sub-pixel is located between the second sub-pixel and the third sub-pixel. The planar shape of the first pixel opening includes a first arc edge and a second arc edge. The planar shape of the second pixel opening includes a third arc edge. The third arc edge is disposed at a distance from the first arc edge and has a first minimum distance D1. The ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance D1 ranges from 70% to 130%.

[0006] For example, in a display substrate provided in an embodiment of this disclosure, the planar shape of the third pixel opening includes a fourth arc edge, the fourth arc edge is disposed at a distance from the second arc edge and has a second minimum distance D2, and the ratio of the difference between the radius of curvature of the fourth arc edge and the radius of curvature of the second arc edge to the second minimum distance D2 is in the range of 70% to 130%.

[0007] For example, in a display substrate provided in an embodiment of this disclosure, the ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance is in the range of 90% to 110%, and the ratio of the difference between the radius of curvature of the fourth arc edge and the radius of curvature of the second arc edge to the second minimum distance D2 is in the range of 90% to 110%.

[0008] For example, in a display substrate provided in one embodiment of this disclosure, the virtual center of the third arc edge roughly coincides with the virtual center of the first arc edge, and the virtual center of the fourth arc edge roughly coincides with the virtual center of the second arc edge.

[0009] For example, in a display substrate provided in an embodiment of this disclosure, in each of the sub-pixel groups, the planar shape of the second pixel opening further includes a fifth arc edge that is spaced apart from the third arc edge, and the planar shape of the third pixel opening further includes a sixth arc edge that is spaced apart from the fourth arc edge.

[0010] For example, in a display substrate provided in an embodiment of this disclosure, in each of the sub-pixel groups, the virtual center of the third arc edge roughly coincides with the virtual center of the fifth arc edge, and the virtual center of the fourth arc edge roughly coincides with the virtual center of the sixth arc edge.

[0011] For example, in a display substrate provided in an embodiment of this disclosure, in each of the sub-pixel groups, the center of the planar shape of the first pixel opening, the center of the planar shape of the second pixel opening, and the center of the planar shape of the third pixel opening are located on the same virtual straight line.

[0012] For example, in a display substrate provided in an embodiment of this disclosure, the plurality of sub-pixel groups are arranged in an array along a first direction and a second direction, the first direction and the second direction intersect; in each of the sub-pixel groups, the angle between the center line connecting the center of the planar shape of the first pixel opening and the center of the planar shape of the third pixel opening and the first direction is in the range of 20-70 degrees.

[0013] For example, in a display substrate provided in one embodiment of this disclosure, the first arc edge and the second arc edge of the planar shape of the first pixel opening are directly connected.

[0014] For example, in a display substrate provided in one embodiment of this disclosure, the planar shape of the first pixel opening includes a circle or an ellipse.

[0015] For example, in a display substrate provided in an embodiment of this disclosure, the plurality of sub-pixel groups are arranged in an array along a first direction and a second direction, the first direction and the second direction intersect; in each of the sub-pixel groups, the arrangement direction from the second sub-pixel to the third sub-pixel is the pixel arrangement direction of the sub-pixel group, and the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite.

[0016] For example, in a display substrate provided in one embodiment of this disclosure, the pixel arrangement directions of two adjacent sub-pixel groups in the second direction are opposite.

[0017] For example, in a display substrate provided in one embodiment of this disclosure, the first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel; or, the first sub-pixel is a red sub-pixel, the second sub-pixel is a blue sub-pixel, and the third sub-pixel is a green sub-pixel; or, the first sub-pixel is a green sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a blue sub-pixel.

[0018] For example, in a display substrate provided in one embodiment of this disclosure, the opening area of ​​the blue sub-pixel is larger than the opening area of ​​the green sub-pixel, and the opening area of ​​the green sub-pixel is larger than the opening area of ​​the red sub-pixel.

[0019] For example, a display substrate provided in one embodiment of this disclosure further includes: an insulating layer located on the side of the pixel defining layer away from the substrate; and a light-shielding layer located on the side of the insulating layer away from the pixel defining layer; the first sub-pixel further includes a first opening located in the light-shielding layer, the second sub-pixel further includes a second opening located in the light-shielding layer, and the third sub-pixel further includes a third opening located in the light-shielding layer; in the first sub-pixel, the orthographic projection of the first pixel opening on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate; in the second sub-pixel, the orthographic projection of the second pixel opening on the substrate at least partially overlaps with the orthographic projection of the second opening on the substrate; and in the third sub-pixel, the orthographic projection of the third pixel opening on the substrate at least partially overlaps with the orthographic projection of the third opening on the substrate.

[0020] For example, in a display substrate provided in an embodiment of this disclosure, the planar shape of the first opening is similar to the planar shape of the first pixel opening, the planar shape of the second opening is similar to the planar shape of the second pixel opening, and the planar shape of the third opening is similar to the planar shape of the third pixel opening.

[0021] For example, a display substrate provided in one embodiment of this disclosure further includes: a color filter layer located on the side of the light-shielding layer away from the substrate, the color filter layer including a first color filter sheet, a second color filter sheet and a third color filter sheet, the first color filter sheet being located in the first opening, the second color filter sheet being located in the second opening, and the third color filter sheet being located in the third opening.

[0022] For example, in a display substrate provided in one embodiment of this disclosure, the planar shape of the first color filter is similar to the planar shape of the first opening, the planar shape of the second color filter is similar to the planar shape of the second opening, and the planar shape of the third color filter is similar to the planar shape of the third opening.

[0023] For example, a display substrate provided in one embodiment of this disclosure further includes: an anode layer located on the side of the pixel defining layer near the substrate, the first sub-pixel including a first anode located in the anode layer, the second sub-pixel including a second anode located in the anode layer, and the third sub-pixel including a third anode located in the anode layer.

[0024] At least one embodiment of this disclosure also provides a display device comprising the display substrate described in any of the preceding claims. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this disclosure and are not intended to limit this disclosure.

[0026] Figure 1 This is a plan view of a display substrate provided according to an embodiment of the present disclosure;

[0027] Figure 2 This is a cross-sectional schematic diagram of a sub-pixel in a display substrate according to an embodiment of the present disclosure;

[0028] Figure 3 for Figure 1 The diagram shows a partially enlarged view of the sub-pixel group in the display substrate.

[0029] Figure 4 Simulated in-circle diffraction energy curves of a display substrate and a conventional display substrate provided in an embodiment of this disclosure;

[0030] Figure 5A This is a schematic diagram of a pixel arrangement structure of a display substrate provided in an embodiment of the present disclosure;

[0031] Figure 5B for Figure 5A The image shows a simulation diagram of the display substrate.

[0032] Figure 5C This is a schematic diagram of the pixel arrangement structure of a conventional display substrate;

[0033] Figure 5D for Figure 5C The image shows a simulation diagram of the display substrate.

[0034] Figure 6A This is a schematic diagram of another pixel arrangement structure of a display substrate provided in an embodiment of the present disclosure;

[0035] Figure 6B for Figure 6A The image shows a simulation diagram of the display substrate.

[0036] Figure 6C This is a schematic diagram of a pixel arrangement structure for another type of conventional display substrate;

[0037] Figure 6D for Figure 6C The image shows a simulation diagram of the display substrate.

[0038] Figure 7 A plan view of another display substrate provided in an embodiment of this disclosure;

[0039] Figure 8 A plan view of another display substrate provided in an embodiment of this disclosure;

[0040] Figure 9 A plan view of another display substrate provided in an embodiment of this disclosure;

[0041] Figure 10 A plan view of another display substrate provided in an embodiment of this disclosure;

[0042] Figure 11 A plan view of another display substrate provided in an embodiment of this disclosure;

[0043] Figure 12 A plan view of another display substrate provided in an embodiment of this disclosure;

[0044] Figure 13 A plan view of another display substrate provided in an embodiment of this disclosure;

[0045] Figure 14 A plan view of another display substrate provided in an embodiment of this disclosure; and

[0046] Figure 15 This is a schematic diagram of a display device provided according to an embodiment of the present disclosure. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the described embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0048] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0049] When an organic light-emitting diode (OLED) display is in the off state, ambient light, after being reflected by a reflective structure (such as an anode), will diffract at the pixel openings. The diffracted light from the multiple pixel openings of the entire OLED display will interfere with each other. At this time, due to light diffraction and interference, the reflected light of the entire OLED display will produce color separation, that is, the OLED display will form multiple different colored halos under white light illumination, affecting the user experience.

[0050] In this regard, at least one embodiment of the present disclosure provides a display substrate, comprising: a substrate and a pixel defining layer; the pixel defining layer is located on one side of the substrate; the display substrate includes a plurality of sub-pixels, the plurality of sub-pixels including a plurality of sub-pixel groups, each sub-pixel group including a first sub-pixel, a second sub-pixel and a third sub-pixel; the first sub-pixel includes a first pixel opening located in the pixel defining layer, the second sub-pixel includes a second pixel opening located in the pixel defining layer, and the third sub-pixel includes a third pixel opening located in the pixel defining layer; in each sub-pixel group, the first sub-pixel is located between the second sub-pixel and the third sub-pixel, the planar shape of the first pixel opening includes a first arc edge and a second arc edge, the planar shape of the second pixel opening includes a third arc edge, the third arc edge is disposed at a distance from the first arc edge and has a first minimum distance D1; the ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance D1 ranges from 70% to 130%. Therefore, the display substrate can reduce diffraction phenomena caused by ambient light reflection by using pixel openings with arc edges; and by setting the ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance D1 in the range of 70% to 130%, the shape of the non-transparent interval between the arc edges of adjacent first and second pixel openings and the spatial frequency (spatial distribution of pixel openings) of the first and second pixel openings can be optimized, thereby further reducing diffraction phenomena by utilizing the principle of interference cancellation, and ultimately improving color separation phenomena.

[0051] At least one embodiment of this disclosure also provides a display device including the display substrate described above. Therefore, this display device also has the technical effect of improving color separation phenomena.

[0052] The display substrate and display device provided in the embodiments of this disclosure will now be described and explained in detail with reference to the accompanying drawings.

[0053] Figure 1 This is a plan view of a display substrate provided according to an embodiment of the present disclosure; Figure 2 This is a cross-sectional schematic diagram of a sub-pixel in a display substrate according to an embodiment of the present disclosure; Figure 3 for Figure 1 The diagram shows a partially enlarged view of the sub-pixel group in the display substrate. It should be noted that... Figure 2 The sub-pixel shown can be any one of the first sub-pixel, second sub-pixel, and third sub-pixel mentioned below.

[0054] like Figure 1 and Figure 2As shown, the display substrate 100 includes a substrate 110 and a pixel defining layer 120; the pixel defining layer 120 is located on one side of the substrate 110. It should be noted that the display substrate 100 may further include: a pixel driving circuit layer 150 and an anode layer 160 located between the substrate 110 and the pixel defining layer 120; and an organic light-emitting layer 170 and a cathode 180 located on the side of the pixel defining layer 120 away from the anode layer 160. The organic light-emitting layer 170 can emit light under the driving force of the anode layer 160 and the cathode 180.

[0055] like Figure 1 and Figure 2 As shown, the display substrate 100 includes a plurality of sub-pixels 210, and the plurality of sub-pixels 210 includes a plurality of sub-pixel groups 220. Each sub-pixel group 220 includes a first sub-pixel 210A, a second sub-pixel 210B, and a third sub-pixel 210C. The first sub-pixel 210A includes a first pixel opening 125A located in the pixel limiting layer 120, the second sub-pixel 210B includes a second pixel opening 125B located in the pixel limiting layer 120, and the third sub-pixel 210C includes a third pixel opening 125C located in the pixel limiting layer 120. The first pixel opening 125A is configured to define an effective light-emitting area of ​​the first sub-pixel 210A, the second pixel opening 125B is configured to define an effective light-emitting area of ​​the second sub-pixel 210B, and the third pixel opening 125C is configured to define an effective light-emitting area of ​​the third sub-pixel 210C.

[0056] like Figure 1 and Figure 3 As shown, in each sub-pixel group 220, the first sub-pixel 210A is located between the second sub-pixel 210B and the third sub-pixel 210C; that is, the second sub-pixel 210B and the third sub-pixel 210C are arranged around the first sub-pixel 210A. The planar shape of the first pixel opening 125A includes a first arc edge 241 and a second arc edge 242, and the planar shape of the second pixel opening 125B includes a third arc edge 243. The third arc edge 243 is arranged at a distance from the first arc edge 241 and has a first minimum distance D1; the ratio of the difference between the radius of curvature of the third arc edge 243 and the radius of curvature of the first arc edge 241 to the first minimum distance D1 ranges from 70% to 130%. It should be noted that the above planar shape can be the shape of the orthographic projection of the corresponding pixel opening on the substrate.

[0057] In the display substrate and display device provided in this embodiment, since the planar shape of the first pixel opening includes a first arc edge and a second arc edge, and the planar shape of the second pixel opening includes a third arc edge, the display substrate can utilize the pixel openings with arc edges to reduce diffraction phenomena generated during ambient light reflection. Furthermore, in each sub-pixel group, the first sub-pixel is located between the second and third sub-pixels, and the ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance D1 ranges from 70% to 130%. Therefore, the display substrate can optimize the spatial frequency of adjacent first and second pixel openings and make the distance between corresponding points on the first and third arc edges approximately equal. This allows for the use of the principle of destructive interference (diffractive light waves generated by different pixel openings achieve destructive interference through the superposition of peaks and troughs, or partial superposition), further reducing diffraction phenomena and ultimately improving color separation. On the other hand, through the above design, the display substrate can also improve the graininess of the image and enhance display quality during display.

[0058] It should be noted that the aforementioned spatial frequency refers to the spatial distribution of pixel openings, that is, the spatial distribution of the light-transmitting and opaque portions of the display substrate. Furthermore, the corresponding points on the first and third arc edges can be the two intersection points of a virtual straight line passing through the virtual center of the first or third arc edge with the first and third arc edges.

[0059] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the third pixel opening 125C includes a fourth arc edge 244. The fourth arc edge 244 is spaced relative to the second arc edge 242 and has a second minimum distance D2. The ratio of the difference between the radius of curvature of the fourth arc edge 244 and the radius of curvature of the second arc edge 242 to the second minimum distance D2 ranges from 70% to 130%. Therefore, this display substrate can optimize the spatial frequency of adjacent first pixel openings and third pixel openings, and make the distance between corresponding points on the second and fourth arc edges approximately equal. Thus, the principle of interference cancellation (the diffracted light waves generated by different pixel openings achieve interference cancellation through the superposition of peaks and troughs, or partial superposition) can be used to further reduce the diffraction phenomenon and ultimately improve the color separation phenomenon.

[0060] In some examples, such as Figure 1 and Figure 3As shown, the ratio of the difference between the radius of curvature of the third arc edge 243 and the radius of curvature of the first arc edge 241 to the first minimum distance D1 ranges from 90% to 110%, which further makes the distance between corresponding points on the first and third arc edges approximately equal. Therefore, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the second pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving the color separation phenomenon.

[0061] In some examples, such as Figure 1 and Figure 3 As shown, the ratio of the difference between the radius of curvature of the fourth arc edge 244 and the radius of curvature of the second arc edge 242 to the second minimum distance D2 ranges from 90% to 110%, which further makes the distance between corresponding points on the second and fourth arc edges approximately equal. Therefore, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the third pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving the color separation phenomenon.

[0062] In some examples, such as Figure 1 and Figure 3 As shown, the ratio of the difference between the radius of curvature of the third arc edge 243 and the radius of curvature of the first arc edge 241 to the first minimum distance D1 is 100%, meaning the difference between the radius of curvature of the third arc edge 243 and the radius of curvature of the first arc edge 241 is equal to the first minimum distance D1. This further ensures that the distance between corresponding points on the first and third arc edges is equal. Consequently, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the second pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving the color separation phenomenon.

[0063] In some examples, such as Figure 1 and Figure 3 As shown, the ratio of the difference between the radius of curvature of the fourth arc edge 244 and the radius of curvature of the second arc edge 242 to the second minimum distance D2 is 100%, meaning the difference between the radius of curvature of the fourth arc edge 244 and the radius of curvature of the second arc edge 242 is equal to the second minimum distance D2. This further ensures that the distance between corresponding points on the second and fourth arc edges is equal. Consequently, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the third pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving the color separation phenomenon.

[0064] In some examples, such as Figure 1 and Figure 3As shown, the virtual center of the third arc edge 243 and the virtual center of the first arc edge 241 approximately coincide. Therefore, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the second pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving color separation. It should be noted that the aforementioned approximately coincidence includes both cases where the two virtual centers completely coincide and cases where the distance between the two virtual centers is less than 1 micrometer.

[0065] In some examples, such as Figure 1 and Figure 3 As shown, the virtual center of the fourth arc edge 244 and the virtual center of the second arc edge 242 approximately coincide. Therefore, the diffracted light generated by the first pixel opening can better interfere destructively with the diffracted light generated by the third pixel opening, thereby further reducing the diffraction phenomenon and ultimately further improving color separation. It should be noted that the aforementioned approximately coincidence includes both cases where the two virtual centers completely coincide and cases where the distance between the two virtual centers is less than 1 micrometer.

[0066] In some examples, such as Figure 1 and Figure 3 As shown, in each sub-pixel group 220, the planar shape of the second pixel opening 125B further includes a fifth arc edge 245 spaced apart from the third arc edge 243, and the planar shape of the third pixel opening 125C further includes a sixth arc edge 246 spaced apart from the fourth arc edge 244. Thus, the planar shape of the second pixel opening includes two arc edges, and the planar shape of the third pixel opening also includes two arc edges. Therefore, the display substrate can utilize the second and third pixel openings with two arc edges to further reduce diffraction phenomena caused by ambient light reflection.

[0067] In some examples, such as Figure 1 and Figure 3 As shown, in each sub-pixel group 220, the virtual center of the third arc edge 243 and the virtual center of the fifth arc edge 245 approximately coincide. Therefore, the distance between corresponding points on the two arc edges of the second pixel opening is also approximately equal, thus better reducing diffraction phenomena caused by ambient light reflection. It should be noted that the aforementioned approximately coincidence includes the case where the two virtual centers completely coincide, as well as the case where the distance between the two virtual centers is less than 1 micrometer.

[0068] In some examples, such as Figure 1 and Figure 3As shown, in each sub-pixel group 220, the virtual center of the fourth arc edge 244 and the virtual center of the sixth arc edge 246 approximately coincide. Therefore, the distance between corresponding points on the two arc edges of the third pixel opening is also approximately equal, thus better reducing diffraction phenomena caused by ambient light reflection. It should be noted that the aforementioned approximately coincidence includes the case where the two virtual centers completely coincide, as well as the case where the distance between the two virtual centers is less than 1 micrometer.

[0069] In some examples, such as Figure 1 and Figure 3 As shown, in each sub-pixel group 220, the center of the planar shape of the first pixel opening 125A, the center of the planar shape of the second pixel opening 125B, and the center of the planar shape of the third pixel opening 125C are located on the same virtual straight line. Therefore, this display substrate allows the diffracted light generated by each pixel opening to better interfere destructively, thereby further reducing diffraction. It should be noted that the center of the planar shape of each pixel opening can be the geometric center or the centroid of that planar shape.

[0070] In some examples, such as Figure 1 and Figure 3 As shown, multiple sub-pixel groups 220 are arrayed along a first direction X and a second direction Y, where the first direction X and the second direction Y intersect; for example, the first direction X and the second direction Y are perpendicular to each other. Of course, embodiments of this disclosure include, but are not limited to, the first direction and the second direction may not be perpendicular, as long as they intersect. In addition, the above-mentioned first direction and second direction being perpendicular to each other includes the case where the first direction and the second direction are strictly perpendicular, and also includes the case where the angle between the right angles of the first direction and the second direction is in the range of 85 degrees to 95 degrees.

[0071] In some examples, such as Figure 1 and Figure 3 As shown, in each sub-pixel group 220, the angle between the line connecting the center of the planar shape of the first pixel opening 125A and the center of the planar shape of the third pixel opening 125C and the first direction ranges from 20 to 70 degrees, for example, 45 degrees. Therefore, this display substrate can optimize the spatial frequency (the spatial distribution of the pixel openings) of the first, second, and third pixel openings, thereby further reducing diffraction phenomena by utilizing the principle of destructive interference, ultimately improving color separation.

[0072] In some examples, such as Figure 1 and Figure 3 As shown, the first arc edge 241 and the second arc edge 242 of the planar shape of the first pixel opening 125A are directly connected; that is, the planar shape of the first pixel opening only includes the first arc edge and the second arc edge, which can better reduce the diffraction phenomenon.

[0073] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the first pixel opening 125A includes a circle or an ellipse.

[0074] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the second pixel opening 125B includes a fan-shaped ring, and the planar shape of the third pixel opening 125C also includes a fan-shaped ring.

[0075] In some examples, such as Figure 1 and Figure 3 As shown, the first sub-pixel 210A can be a blue sub-pixel configured to emit blue light, the second sub-pixel 210B can be a red sub-pixel configured to emit red light, and the third sub-pixel 210C can be a green sub-pixel configured to emit green light. Of course, embodiments of this disclosure include, but are not limited to, these.

[0076] In some examples, such as Figure 1 and Figure 3 As shown, the aperture area of ​​the first sub-pixel 210A is larger than the aperture area of ​​the third sub-pixel 210C, and the aperture area of ​​the third sub-pixel 210C is larger than the aperture area of ​​the second sub-pixel 210B. That is, the aperture area of ​​the blue sub-pixel is larger than the aperture area of ​​the green sub-pixel, and the aperture area of ​​the green sub-pixel is larger than the aperture area of ​​the red sub-pixel. Therefore, this display substrate can balance the brightness and lifespan of various color sub-pixels. It should be noted that the aperture area of ​​the aforementioned sub-pixels can refer to the area of ​​the planar shape of the corresponding pixel aperture.

[0077] In some examples, such as Figure 1 and Figure 3 As shown, the ratio of the aperture area of ​​the first sub-pixel 210A, the aperture area of ​​the second sub-pixel 210B, and the aperture area of ​​the third sub-pixel 210C is 1.69:1:1.4. Of course, embodiments of this disclosure include, but are not limited to, this.

[0078] In some examples, such as Figure 1 , Figure 2 and Figure 3 As shown, the display substrate 100 further includes an insulating layer 130 and a light-shielding layer 140; the insulating layer 130 is located on the side of the pixel defining layer 120 away from the substrate 110; the light-shielding layer 140 is located on the side of the insulating layer 130 away from the pixel defining layer 120. At this time, the first sub-pixel 210A further includes a first opening 145A located in the light-shielding layer 140, the second sub-pixel 210B further includes a second opening 145B located in the light-shielding layer 140, and the third sub-pixel 210C further includes a third opening 145C located in the light-shielding layer 140.

[0079] In the first sub-pixel 210A, the orthographic projection of the first pixel opening 125A onto the substrate 110 at least partially overlaps with the orthographic projection of the first opening 145A onto the substrate 110. Therefore, during display, light emitted from the organic light-emitting layer 170 in the first pixel opening 125A can be emitted through the first opening 145A. Thus, the effective light-emitting area of ​​the first sub-pixel can be defined jointly by the first pixel opening and the first opening.

[0080] In the second sub-pixel 210B, the orthographic projection of the second pixel opening 125B onto the substrate 110 at least partially overlaps with the orthographic projection of the second opening 145B onto the substrate 110. Therefore, during display, light emitted from the organic light-emitting layer 170 in the second pixel opening 125B can be emitted through the second opening 145B. Thus, the effective light-emitting area of ​​the second sub-pixel can be defined jointly by the second pixel opening and the second opening.

[0081] In the third sub-pixel 210C, the orthographic projection of the third pixel opening 125C onto the substrate 110 at least partially overlaps with the orthographic projection of the third opening 145C onto the substrate 110. Therefore, during display, light emitted from the organic light-emitting layer 170 in the third pixel opening 125C can be emitted through the third opening 145C. Thus, the effective light-emitting area of ​​the third sub-pixel can be defined jointly by the third pixel opening and the third opening.

[0082] For example, the insulating layer 130 mentioned above can be an encapsulation layer; the light-shielding layer 140 mentioned above can be a black matrix layer; and the first opening, the second opening, and the third opening mentioned above can be the first black matrix opening, the second black matrix opening, and the third black matrix opening in the black matrix layer.

[0083] The display substrate provided in the example above employs COE (Color Filter on Encapsulation) technology, which involves forming a color filter structure on the encapsulation layer. This allows the display substrate to effectively absorb and scatter ambient light, significantly reducing reflections on the screen surface and thus minimizing glare. Simultaneously, COE technology also improves light transmittance, resulting in a brighter, more detailed display with more accurate color reproduction.

[0084] In some examples, such as Figure 1 and Figure 3 As shown, the orthographic projection of the first pixel opening 125A onto the substrate 110 lies within the orthographic projection of the first opening 145A onto the substrate 110. Therefore, the effective light-emitting area of ​​the first sub-pixel is mainly defined by the first pixel opening.

[0085] In some examples, such as Figure 1 and Figure 3As shown, the orthographic projection of the second pixel opening 125B onto the substrate 110 lies within the orthographic projection of the second opening 145B onto the substrate 110. Therefore, the effective light-emitting area of ​​the second sub-pixel is primarily defined by the second pixel opening.

[0086] In some examples, such as Figure 1 and Figure 3 As shown, the orthographic projection of the third pixel opening 125C onto the substrate 110 lies within the orthographic projection of the third opening 145C onto the substrate 110. Therefore, the effective light-emitting area of ​​the third sub-pixel is mainly defined by the third pixel opening.

[0087] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the first opening 145A is similar to the planar shape of the first pixel opening 125A, that is, the planar shape of the first opening 145A also includes two rounded edges. For example, the planar shape of the first opening 145A can be a shape formed by equidistant outward expansion of the edges of the planar shape of the first pixel opening 125A.

[0088] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the second opening 145B is similar to the planar shape of the second pixel opening 125B, that is, the planar shape of the second opening 145B also includes two rounded edges. For example, the planar shape of the second opening 145B can be a shape formed by equidistant outward expansion of the edges of the planar shape of the second pixel opening 125B.

[0089] In some examples, such as Figure 1 and Figure 3 As shown, the planar shape of the third opening 145C is similar to the planar shape of the third pixel opening 125B, that is, the planar shape of the third opening 145C also includes two rounded edges. For example, the planar shape of the third opening 145C can be a shape formed by equidistant expansion of the edges of the planar shape of the third pixel opening 125C.

[0090] In some examples, such as Figure 1 and Figure 2 As shown, the display substrate 100 also includes a color filter layer 190, located on the side of the light-shielding layer 140 away from the substrate 110; the color filter layer 190 includes a first color filter sheet 191, a second color filter sheet 192 and a third color filter sheet 193; the first color filter sheet 191 is located in the first opening 145A, the second color filter sheet 192 is located in the second opening 145B, and the third color filter sheet 193 is located in the third opening 145C.

[0091] In some examples, such as Figure 1 and Figure 3As shown, the planar shape of the first color filter 191 is similar to the planar shape of the first opening 145A, the planar shape of the second color filter 192 is similar to the planar shape of the second opening 145B, and the planar shape of the third color filter 193 is similar to the planar shape of the third opening 145C.

[0092] In some examples, such as Figure 1 , Figure 2 and Figure 3 As shown, the display substrate 100 also includes an anode layer 160 located on the side of the pixel defining layer 120 close to the substrate 110; the first sub-pixel 210A includes a first anode 161 located in the anode layer 160, the second sub-pixel 210B includes a second anode 162 located in the anode layer 160, and the third sub-pixel 210C includes a third anode 163 located in the anode layer 160.

[0093] Figure 4 Simulated in-circle diffraction energy curves of a display substrate and a conventional display substrate provided in an embodiment of this disclosure; Figure 5A This is a schematic diagram of a pixel arrangement structure of a display substrate provided in an embodiment of the present disclosure; Figure 5B for Figure 5A The image shows a simulation diagram of the display substrate. Figure 5C This is a schematic diagram of the pixel arrangement structure of a conventional display substrate; Figure 5D for Figure 5C The image shows a simulation diagram of the display substrate. Figure 6A This is a schematic diagram of another pixel arrangement structure of a display substrate provided in an embodiment of the present disclosure; Figure 6B for Figure 6A The image shows a simulation diagram of the display substrate. Figure 6C This is a schematic diagram of a pixel arrangement structure for another type of conventional display substrate; Figure 6D for Figure 6C The image shown is a simulation diagram of the display substrate. It should be noted that... Figure 5B and Figure 5D The image shows a simulation plot of the point spread function (PSF).

[0094] like Figure 4 As shown, with the same distance from the center of the light spot, the en-loop energy ratio of the display substrate provided in this embodiment is higher than that of a conventional display substrate. Therefore, it can be explained that the color separation phenomenon of the display substrate provided in this embodiment is improved. Furthermore, as... Figure 5B and Figure 5D As shown, the dot diffusion function of the display substrate provided in this embodiment is more concentrated, thus improving the color separation phenomenon of the display substrate provided in this embodiment. On the other hand, as... Figure 6B and Figure 6D As shown, when displaying a white simulation image, Figure 6B The luminance variance of the white simulated image shown is 2.335, while Figure 6D The brightness variance of the white simulation image shown is 2.958; it can be seen that the smaller the brightness variance of the display substrate provided in this embodiment, the less noticeable the display graininess and the better the display effect.

[0095] Figure 7 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 1 The difference in the display substrate shown is that, in the sub-pixel group 220, the first sub-pixel 210A located in the center is a red sub-pixel, the second sub-pixel 210B is a blue sub-pixel, and the third sub-pixel 210C is a green sub-pixel. Although Figure 7 The light emitted by each sub-pixel in the display substrate shown is of a different color, but Figure 7 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 1 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0096] In some examples, such as Figure 7 As shown, since the first sub-pixel 210A is a red sub-pixel, the second sub-pixel 210B is a blue sub-pixel, and the third sub-pixel 210C is a green sub-pixel, in order to balance the brightness and lifespan of the different colored sub-pixels, the aperture area of ​​the blue sub-pixel is larger than that of the green sub-pixel, and the aperture area of ​​the green sub-pixel is larger than that of the red sub-pixel. Therefore, with... Figure 1 The difference between the two display substrates shown is that the area of ​​the second pixel opening 125B of the second sub-pixel 210B is larger than the area of ​​the third pixel opening 125C of the third sub-pixel 210C, and the area of ​​the third pixel opening 125C of the third sub-pixel 210C is larger than the area of ​​the first pixel opening 125A of the first sub-pixel 210A.

[0097] In some examples, such as Figure 7 As shown, the ratio of the aperture area of ​​the second sub-pixel 210B, the aperture area of ​​the first sub-pixel 210A, and the aperture area of ​​the third sub-pixel 210C is 1.69:1:1.4. Of course, embodiments of this disclosure include, but are not limited to, this.

[0098] Figure 8 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 1 The difference in the display substrate shown is that, in the sub-pixel group 220, the first sub-pixel 210A located in the center is a green sub-pixel, the second sub-pixel 210B is a blue sub-pixel, and the third sub-pixel 210C is a red sub-pixel. Although Figure 8 The light emitted by each sub-pixel in the display substrate shown is of a different color, but Figure 8 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 1 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0099] In some examples, such as Figure 8 As shown, since the first sub-pixel 210A is a green sub-pixel, the second sub-pixel 210B is a blue sub-pixel, and the third sub-pixel 210C is a red sub-pixel, in order to balance the brightness and lifespan of the different colored sub-pixels, the aperture area of ​​the blue sub-pixel is larger than that of the green sub-pixel, and the aperture area of ​​the green sub-pixel is larger than that of the red sub-pixel. Therefore, with... Figure 1 The difference between the two display substrates shown is that the area of ​​the second pixel opening 125B of the second sub-pixel 210B is larger than the area of ​​the first pixel opening 125A of the first sub-pixel 210A, and the area of ​​the first pixel opening 125A of the first sub-pixel 210A is larger than the area of ​​the third pixel opening 125C of the third sub-pixel 210C.

[0100] In some examples, such as Figure 8 As shown, the ratio of the aperture area of ​​the second sub-pixel 210B, the aperture area of ​​the third sub-pixel 210C, and the aperture area of ​​the first sub-pixel 210A is 1.69:1:1.4. Of course, embodiments of this disclosure include, but are not limited to, this.

[0101] Figure 9 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 1Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the first direction X are opposite. Therefore, this display substrate can improve display quality.

[0102] It should be noted that, although Figure 9 In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite, but... Figure 9 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 1 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0103] Figure 10 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 1 Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the second direction Y are opposite. Therefore, this display substrate can improve display quality.

[0104] It should be noted that, although Figure 10 In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the second direction are opposite, but... Figure 10 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 1 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0105] Figure 11 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 7 Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the first direction X are opposite. Therefore, this display substrate can improve display quality.

[0106] It should be noted that, although Figure 11 In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite, but... Figure 11 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 7 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0107] Figure 12 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 7 Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the second direction Y are opposite. Therefore, this display substrate can improve display quality.

[0108] It should be noted that, although Figure 12 In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite, but... Figure 12 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 7The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0109] Figure 13 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 8 Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the first direction X are opposite. Therefore, this display substrate can improve display quality.

[0110] It should be noted that, although Figure 13 In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite, but... Figure 13 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 8 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0111] Figure 14 This is a plan view of another display substrate provided in an embodiment of the present disclosure. Figure 8 Unlike the previously shown display substrate, this one features multiple sub-pixel groups 220 arranged in an array along a first direction X and a second direction Y, where the first direction X intersects the second direction Y; for example, the first direction X and the second direction Y are perpendicular to each other. In each sub-pixel group 220, the arrangement direction from the second sub-pixel 210B to the third sub-pixel 210C is the pixel arrangement direction of the sub-pixel group 220, and the pixel arrangement directions of two adjacent sub-pixel groups 220 along the second direction Y are opposite. Therefore, this display substrate can improve display quality.

[0112] It should be noted that, although Figure 14In the display substrate shown, the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite, but... Figure 14 The position and shape constraints of the first, second, and third sub-pixels shown are... Figure 8 The display substrate shown is identical to that of the one described. Therefore, this display substrate can reduce diffraction caused by ambient light reflection by utilizing pixel openings with rounded edges. Furthermore, it can weaken diffraction by utilizing the principle of destructive interference (diffractive light waves generated by different pixel openings can achieve destructive interference through the superposition of peaks and troughs, or partial superposition), ultimately improving color separation. On the other hand, this display substrate can also improve the graininess of the image and enhance display quality during display.

[0113] At least one embodiment of this disclosure also provides a display device. Figure 15 This is a schematic diagram of a display device provided according to an embodiment of the present disclosure. Figure 15 As shown, the display device 500 includes the aforementioned display substrate 100. Therefore, this display device can also improve color separation.

[0114] In some examples, the aforementioned display device may be an electronic product with display function, such as a television, computer monitor, laptop computer, tablet computer, mobile phone, navigator, or in-vehicle display.

[0115] The following points need to be explained:

[0116] (1) The accompanying drawings of the embodiments of this disclosure only involve the structures involved in the embodiments of this disclosure, and other structures can be referred to the general design.

[0117] (2) Where there is no conflict, features of the same embodiment and different embodiments of this disclosure may be combined with each other.

[0118] The above description is merely an exemplary embodiment of this disclosure and is not intended to limit the scope of protection of this disclosure, which is determined by the appended claims.

Claims

1. A display substrate, characterized in that, include: Substrate; as well as A pixel defining layer is located on one side of the substrate. The display substrate includes a plurality of sub-pixels, which in turn include a plurality of sub-pixel groups. Each sub-pixel group includes a first sub-pixel, a second sub-pixel, and a third sub-pixel. The first sub-pixel includes a first pixel opening located in the pixel defining layer, the second sub-pixel includes a second pixel opening located in the pixel defining layer, and the third sub-pixel includes a third pixel opening located in the pixel defining layer. In each of the sub-pixel groups, the first sub-pixel is located between the second sub-pixel and the third sub-pixel. The planar shape of the opening of the first pixel includes a first arc edge and a second arc edge, and the planar shape of the opening of the second pixel includes a third arc edge. The third arc edge is spaced apart from the first arc edge and has a first minimum distance D1. The ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance D1 ranges from 70% to 130%.

2. The display substrate according to claim 1, characterized in that, The planar shape of the third pixel opening includes a fourth arc edge, which is spaced apart from the second arc edge and has a second minimum distance D2. The ratio of the difference between the radius of curvature of the fourth arc edge and the radius of curvature of the second arc edge to the second minimum distance D2 is in the range of 70% to 130%.

3. The display substrate according to claim 2, characterized in that, The ratio of the difference between the radius of curvature of the third arc edge and the radius of curvature of the first arc edge to the first minimum distance is in the range of 90% to 110%, and the ratio of the difference between the radius of curvature of the fourth arc edge and the radius of curvature of the second arc edge to the second minimum distance D2 is in the range of 90% to 110%.

4. The display substrate according to claim 2, characterized in that, The virtual center of the third arc edge roughly coincides with the virtual center of the first arc edge, and the virtual center of the fourth arc edge roughly coincides with the virtual center of the second arc edge.

5. The display substrate according to any one of claims 2-4, characterized in that, In each of the sub-pixel groups, the planar shape of the second pixel opening further includes a fifth arc edge that is spaced apart from the third arc edge, and the planar shape of the third pixel opening further includes a sixth arc edge that is spaced apart from the fourth arc edge.

6. The display substrate according to claim 5, characterized in that, In each of the sub-pixel groups, the virtual center of the third arc edge roughly coincides with the virtual center of the fifth arc edge, and the virtual center of the fourth arc edge roughly coincides with the virtual center of the sixth arc edge.

7. The display substrate according to any one of claims 1-4, characterized in that, In each of the sub-pixel groups, the center of the planar shape of the first pixel opening, the center of the planar shape of the second pixel opening, and the center of the planar shape of the third pixel opening are located on the same virtual straight line.

8. The display substrate according to any one of claims 1-4, characterized in that, The plurality of sub-pixel groups are arranged in an array along a first direction and a second direction, wherein the first direction and the second direction intersect. In each of the sub-pixel groups, the angle between the center line connecting the center of the planar shape of the first pixel opening and the center of the planar shape of the third pixel opening and the first direction ranges from 20 to 70 degrees.

9. The display substrate according to any one of claims 1-4, characterized in that, The first and second arc edges of the planar shape of the first pixel opening are directly connected.

10. The display substrate according to claim 9, characterized in that, The planar shape of the first pixel opening includes a circle or an ellipse.

11. The display substrate according to any one of claims 1-4, characterized in that, The plurality of sub-pixel groups are arranged in an array along a first direction and a second direction, wherein the first direction and the second direction intersect. In each of the sub-pixel groups, the arrangement direction from the second sub-pixel to the third sub-pixel is the pixel arrangement direction of the sub-pixel group, and the pixel arrangement directions of two adjacent sub-pixel groups in the first direction are opposite.

12. The display substrate according to claim 11, characterized in that, In the second direction, the pixel arrangement directions of two adjacent sub-pixel groups are opposite.

13. The display substrate according to any one of claims 1-4, characterized in that, The first sub-pixel is a blue sub-pixel, the second sub-pixel is a red sub-pixel, and the third sub-pixel is a green sub-pixel; Alternatively, the first sub-pixel is a red sub-pixel, the second sub-pixel is a blue sub-pixel, and the third sub-pixel is a green sub-pixel; Alternatively, the first sub-pixel can be a green sub-pixel, the second sub-pixel a red sub-pixel, and the third sub-pixel a blue sub-pixel.

14. The display substrate according to claim 13, characterized in that, The opening area of ​​the blue sub-pixel is larger than the opening area of ​​the green sub-pixel, and the opening area of ​​the green sub-pixel is larger than the opening area of ​​the red sub-pixel.

15. The display substrate according to any one of claims 1-4, characterized in that, Also includes: An insulating layer is located on the side of the pixel defining layer away from the substrate. as well as A light-shielding layer is located on the side of the insulating layer away from the pixel defining layer; The first sub-pixel further includes a first opening located within the light-shielding layer, the second sub-pixel further includes a second opening located within the light-shielding layer, and the third sub-pixel further includes a third opening located within the light-shielding layer. In the first sub-pixel, the orthographic projection of the first pixel opening on the substrate at least partially overlaps with the orthographic projection of the first opening on the substrate; in the second sub-pixel, the orthographic projection of the second pixel opening on the substrate at least partially overlaps with the orthographic projection of the second opening on the substrate; in the third sub-pixel, the orthographic projection of the third pixel opening on the substrate at least partially overlaps with the orthographic projection of the third opening on the substrate.

16. The display substrate according to claim 15, characterized in that, The planar shape of the first opening is similar to the planar shape of the first pixel opening, the planar shape of the second opening is similar to the planar shape of the second pixel opening, and the planar shape of the third opening is similar to the planar shape of the third pixel opening.

17. The display substrate according to claim 15, characterized in that, Also includes: The color filter layer is located on the side of the light-shielding layer away from the substrate. The color filter layer includes a first color filter, a second color filter, and a third color filter. The first color filter is located in the first opening, the second color filter is located in the second opening, and the third color filter is located in the third opening.

18. The display substrate according to claim 17, characterized in that, The planar shape of the first color filter is similar to the planar shape of the first opening, the planar shape of the second color filter is similar to the planar shape of the second opening, and the planar shape of the third color filter is similar to the planar shape of the third opening.

19. The display substrate according to any one of claims 1-4, characterized in that, Also includes: An anode layer is located on the side of the pixel defining layer closest to the substrate. Wherein, the first sub-pixel includes a first anode located in the anode layer, the second sub-pixel includes a second anode located in the anode layer, and the third sub-pixel includes a third anode located in the anode layer.

20. A display device, characterized in that, Includes the display substrate according to any one of claims 1-19.

Images