Display substrate, display panel and display device

Abstract

This invention discloses a display substrate, a display panel, and a display device. The display substrate includes a substrate and a color filter structure layer disposed on one side of the substrate. The color filter structure layer includes rows and columns of color filters arranged adjacent to each other in the row direction. The color filter structure layer has multiple undercut structures in the row direction, which are formed at the adjacent sidewalls of every two adjacent color filters. Each undercut structure includes a first arc-shaped portion protruding towards the substrate and a second arc-shaped portion protruding away from the substrate. The first arc-shaped portion is closer to the substrate than the second arc-shaped portion, and the two are connected in a direction perpendicular to the substrate. The slope angle of the first arc-shaped portion is greater than that of the second arc-shaped portion. While ensuring color crosstalk prevention between adjacent pixels, the light-emitting area of ​​the pure color light path can be maximized, thereby maximizing the color shift viewing angle, improving color shift caused by viewing angle, and enhancing the display effect.

Description

Technical Field

[0001] This invention generally relates to the field of display technology, and more specifically to a display substrate, a display panel, and a display device. Background Technology

[0002] One technical approach for microdisplays is to use white light devices combined with color filters (CF) to achieve full color. Microdisplays have ultra-high PPI and extremely small pixels (d: 3~8um), making them prone to color crosstalk. In traditional display fields, light-blocking membranes (BMs) are typically used to block crosstalk between pixels. Currently, most microdisplays use pixel overlap, with the overlapping areas being opaque to achieve the light-blocking effect.

[0003] Typically, overlapping structures are characterized by undercut angles on the left and right sides of the color filter. This creates an overlapping area at the undercut position, which forms a light-blocking area of ​​a certain width to prevent color mixing between pixels and thus improve the color gamut.

[0004] Currently, the undercut angle is relatively gentle, meaning the overlapping area is large, which can form a wide light-blocking area. However, under a wide range of color shift angles, the light path will result in an impure image after passing through two color filters. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a display substrate, a display panel, and a display device.

[0006] In a first aspect, embodiments of the present invention provide a display substrate, comprising: a substrate and a color filter structure layer disposed on one side of the substrate, the color filter structure layer comprising rows and columns of color filters, the color filters being disposed adjacent to each other in the row direction;

[0007] The color filter structure layer has multiple undercut structures in the row direction. The undercut structures are formed at the adjacent sidewalls of every two adjacent color filters. The undercut structure includes a first arc-shaped portion protruding towards the substrate and a second arc-shaped portion protruding away from the substrate. The first arc-shaped portion is closer to the substrate than the second arc-shaped portion and the two are connected in a direction perpendicular to the substrate. The slope angle of the first arc-shaped portion is greater than that of the second arc-shaped portion.

[0008] In some examples, the length of the first arcuate portion is greater than the length of the second arcuate portion.

[0009] In some examples, the slope angle of the first arc portion is 60° to 85°.

[0010] In some examples, between every two adjacent color filters, the undercut structure includes a raised sidewall on one of the color filters and a recessed sidewall on the other color filter, the raised sidewall and the recessed sidewall being adapted to fit in the row direction.

[0011] In some examples, the rows and columns of color filters include a first filter, a second filter, and a third filter that are different colors from each other, the first filter having the raised sidewall, the second filter having the recessed sidewall, and the third filter having both the raised sidewall and the recessed sidewall;

[0012] The substrate has multiple pixel regions, and each pixel region has a first filter, a second filter and a third filter;

[0013] In the row direction and in each pixel region, the third filter is located between the first filter and the second filter;

[0014] In the row direction, each pair of adjacent color filters has a different color.

[0015] In some examples, the color filter having the recessed sidewalls also has protruding structures that correspond one-to-one with the recessed sidewalls, and the corresponding protruding structures are connected to the recessed sidewalls in a direction perpendicular to the substrate.

[0016] The protruding structure includes a third arcuate portion and a fourth arcuate portion connected in the row direction. The third arcuate portion is connected to a recessed sidewall corresponding to the protruding structure, and the slope angle of the third arcuate portion is greater than that of the fourth arcuate portion.

[0017] In some examples, the length of the second arcuate portion is greater than the length of the third arcuate portion.

[0018] In some examples, the orthographic projection of the protrusion structure connected to the recessed sidewall on the substrate covers the orthographic projection of the protrusion sidewall corresponding to the recessed sidewall on the substrate. The overlapping portion between two adjacent color filters forms a black matrix, which corresponds one-to-one with the protrusion structure and one-to-one with the undercut structure.

[0019] The orthographic projection of the protrusion structure on the substrate covers the orthographic projection of the black matrix on the substrate, and the orthographic projection of the black matrix on the substrate covers the orthographic projection of the undercut structure on the substrate.

[0020] In some examples, the display substrate further includes a light-emitting structure layer located on the side of the color filter structure layer close to the substrate, the light-emitting structure layer including an anode layer, a pixel defining layer, a light-emitting layer and a cathode layer;

[0021] The orthographic projection of the protrusion structure on the substrate falls within the orthographic projection of the pixel defining layer on the substrate, and the orthographic projection of the black matrix on the substrate falls within the orthographic projection of the pixel defining layer on the substrate.

[0022] In some examples, the width of the orthogonal projection of the undercut structure onto the substrate in the row direction is negatively correlated with the magnitude of the slope angle of the first arcuate portion.

[0023] In some examples, the width of the black matrix in the row direction is 100nm to 300nm.

[0024] Secondly, embodiments of the present invention provide a display panel, including the display substrate described above.

[0025] Thirdly, embodiments of the present invention provide a display device, including the display panel described above.

[0026] The technical solutions provided by the embodiments of the present invention may include the following beneficial effects:

[0027] The display substrate, display panel, and display device provided in this invention embodiment have a first slope angle greater than a second slope angle in the undercut structure, which effectively increases the light-incident area of ​​the pure color light path. Preferably, the length of the first arc length portion corresponding to the first slope angle is greater than the length of the second arc length portion corresponding to the second slope angle. The first slope angle is 60°~85°, and the width of each black matrix in the color filter structure layer in the row direction is 100nm~300nm. In this way, while ensuring the color separation between adjacent pixels, the light-out area of ​​the pure color light path can be maximized, thereby maximizing the color shift viewing angle, improving the color shift caused by the viewing angle, and enhancing the display effect. Attached Figure Description

[0028] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of a display substrate in the prior art;

[0030] Figure 2 This is a simulation diagram of the color filter structure layer of a display substrate in the prior art;

[0031] Figure 3This is a schematic diagram of the structure of a display substrate provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of three color filters corresponding to a pixel region in the color filter structure layer provided in an embodiment of the present invention;

[0033] Figure 5 This is a simulation diagram of the color filter structure layer of the display substrate provided in an embodiment of the present invention;

[0034] Figure 6 This is a simulation diagram of the color filter structure layer of the display substrate provided in an embodiment of the present invention. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0037] Reference Figure 1 In the color filter structure layer of the display substrate, an undercut structure is formed between each color filter. The undercut structure is located at the contact point of the sidewalls of two adjacent color filters. The undercut structure is a concave structure formed on the sidewall of the color filter. The slope of the undercut structure is relatively gentle, and the width of the overlapping area between adjacent color filters is relatively large. This results in a narrow pure color light emission area at a wide viewing angle. There is a certain range of impure light path at a wide viewing angle, and it is easy to cause viewing angle deviation. Excessive viewing angle deviation will seriously affect product quality.

[0038] Reference Figure 2 The illustrated color filter structure layer shows four color filters from left to right: red, green, blue, and red. The undercut slope angle is less than 60°, with a gentle slope. For example, the undercut slope angles between adjacent color filters from left to right are β2=54°23′, β1=40°21′, and β3=55°13′, respectively. The width of the overlap region between adjacent color filters is greater than 500nm. For example, the widths of the overlap region between adjacent color filters from left to right are D1=521.05nm, D2=859.74nm, and D3=714.66nm, respectively. Figure 2The diagram illustrates pure color light paths and impure light paths. When the slope of the undercut structure is relatively gentle and the overlap area between adjacent color filters is relatively large, the pure color light output area at a wide viewing angle is narrow, and there is a certain range of impure light paths at a wide viewing angle.

[0039] This invention provides a display substrate, such as... Figures 3 to 6 As shown, the display substrate includes: a substrate 1 and a color filter structure layer 2 disposed on one side of the substrate 1. The color filter structure layer 2 includes rows and columns of color filters 21, which are arranged adjacent to each other in the row direction.

[0040] The color filter structure layer 2 has multiple undercut structures 22 in the row direction. The undercut structures 22 are formed at the adjacent sidewalls of every two adjacent color filters. The undercut structure 22 includes a first arc-shaped portion protruding towards the substrate 1 and a second arc-shaped portion protruding away from the substrate 1. The first arc-shaped portion is closer to the substrate than the second arc-shaped portion and the two are connected in a direction perpendicular to the substrate. The slope angle of the first arc-shaped portion is greater than the slope angle of the second arc-shaped portion.

[0041] The end of the color filter closest to the substrate is defined as the first end, and the end of the color filter furthest from the substrate is defined as the second end. (Refer to...) Figure 5 The first slope angle θ corresponds to the first arc portion, and the second slope angle α2 corresponds to the second arc portion. Since the first slope angle θ is greater than the second slope angle α2, the overlap between the first ends of two adjacent color filters is smaller, which can effectively increase the incident light area of ​​the pure color light path.

[0042] Furthermore, the length of the first arc-shaped portion is greater than the length of the second arc-shaped portion, which ensures that the overlap between the second ends of two adjacent color filters is also small, thereby minimizing the overlap between two adjacent color filters and effectively increasing the light output area of ​​the pure color light path.

[0043] It is understandable that the undercut structure 22 is a recess on the sidewall of the color filter. The width of the orthographic projection of the undercut structure 22 onto the substrate 1 in the row direction is equal to the depth of the recess. The width of the orthographic projection of the undercut structure 22 onto the substrate 1 in the row direction is negatively correlated with the magnitude of the first slope angle of the first arc-shaped portion. The first slope angle θ is the slope angle of the undercut structure 22. The larger the first slope angle θ, the smaller the width of the orthographic projection of the undercut structure 22 onto the substrate 1 in the row direction, and the larger the light-emitting area of ​​the pure color light path.

[0044] Furthermore, the slope angle of the first arc-shaped portion is 60°~85°. Preferably, the first slope angle θ is greater than 60° and less than 85°, for example, the first slope angle is 65°, 70°, 75° or 80°, which can make the width of the orthographic projection of the undercut structure 22 on the substrate 1 in the row direction smaller.

[0045] In some exemplary embodiments, reference is made to Figure 3 and Figure 4 Between every two adjacent color filters, the undercut structure includes a raised sidewall 221 on one of the color filters and a recessed sidewall 222 on the other color filter, the raised sidewall 221 and the recessed sidewall 222 being adapted to fit together in the row direction.

[0046] It should be noted that the aforementioned first arc-shaped portion and the aforementioned second arc-shaped portion are two parts of the undercut structure in the direction perpendicular to the substrate, and are not distinguished as individual color filters; while the protruding sidewall 221 and the recessed sidewall 222 are two parts parallel to the substrate, and are distinguished as the sidewalls of individual color filters.

[0047] Specifically, the rows and columns of color filters 21 include a first filter, a second filter, and a third filter that are different colors from each other. The first filter has a raised sidewall 221, the second filter has a recessed sidewall 222, and the third filter has a raised sidewall 221 and a recessed sidewall 222.

[0048] The substrate has multiple pixel regions, each pixel region having a first filter, a second filter and a third filter;

[0049] In the row direction and in each pixel region, the third filter is located between the first filter and the second filter;

[0050] In the row direction, each pair of adjacent color filters has a different color.

[0051] For example, the first filter is a red filter, the second filter is a green filter, and the third filter is a blue filter. The red filter has a raised sidewall 221, the blue filter has a recessed sidewall 222, and the green filter has both a raised sidewall 221 and a recessed sidewall 222. In each pixel region, the green filter is located between the red filter and the blue filter.

[0052] In some exemplary embodiments, the color filter with recessed sidewalls also has a protrusion structure 23, which corresponds one-to-one with the recessed sidewall 222, and the corresponding protrusion structure 23 and the recessed sidewall 222 are connected in a direction perpendicular to the substrate.

[0053] The protruding structure 23 includes a third arcuate portion and a fourth arcuate portion connected in the row direction. The third arcuate portion is connected to a recessed sidewall corresponding to the protruding structure, and the slope angle of the third arcuate portion is greater than that of the fourth arcuate portion.

[0054] Reference Figure 5 The third slope angle α3 corresponds to the third arc-shaped portion, and the fourth slope angle α4 corresponds to the fourth arc-shaped portion. It can be understood that when forming the undercut structure 22, a corresponding undercut structure 22 will be formed, meaning the protrusion structure 23 corresponds one-to-one with the undercut structure 22. The third slope angle α3 is greater than the fourth slope angle α4, ensuring that the width of the orthogonal projection of the protrusion structure 23 onto the substrate in the row direction is small, effectively ensuring a larger light-emitting area for the pure color light path.

[0055] In some exemplary embodiments, the length of the second arc-shaped portion is greater than the length of the third arc-shaped portion. That is, the length of the second arc-shaped portion corresponding to the second slope angle α2 is greater than the length of the third arc-shaped portion corresponding to the third slope angle α3, thus ensuring that the width of the protruding structure 23 is narrow, thereby effectively increasing the light output area of ​​the pure color light path.

[0056] In some exemplary embodiments, the orthographic projection of the protrusion structure connected to the recessed sidewall onto the substrate covers the orthographic projection of the protrusion sidewall corresponding to the recessed sidewall onto the substrate. The overlapping portion between two adjacent color filters forms a black matrix, which corresponds one-to-one with the protrusion structure and one-to-one with the undercut structure.

[0057] The orthographic projection of the protrusion structure onto the substrate covers the orthographic projection of the black matrix onto the substrate, and the orthographic projection of the black matrix onto the substrate covers the orthographic projection of the undercut structure onto the substrate.

[0058] Understandably, the black matrix serves to prevent color mixing between pixels. The orthographic projection of A covers the orthographic projection of B. "Covering" can be understood as A's orthographic projection being larger than B's, with B's orthographic projection falling within A's orthographic projection. Alternatively, it can be understood as A's orthographic projection completely coinciding with B's. If A is a raised structure, then B is a black matrix; if A is a black matrix, then B is an undercut structure. This configuration ensures the formation of the black matrix even with the undercut structure 22 and raised structure 23, thus giving the color filter structure layer a black matrix without the need for additional black matrices, effectively preventing color mixing between sub-pixels.

[0059] In the actual fabrication process, it is not required that the orthographic projections of the multiple black matrices on the substrate 1 completely coincide with the orthographic projections of the multiple undercut structures 22 on the substrate 1. It is sufficient that the orthographic projections of the undercut structures 22 on the substrate 1 fall within the orthographic projections of the black matrices on the substrate 1.

[0060] Furthermore, the width of the black matrix in the row direction is 100nm~300nm, preferably greater than 100nm and less than 300nm, for example, the width of the black matrix in the row direction is 200nm, 220nm, 250nm or 270nm, etc.

[0061] In some exemplary embodiments, the display substrate further includes a light-emitting structure layer located on the side of the color filter structure layer 2 close to the substrate 1. The light-emitting structure layer includes an anode layer (not shown), a pixel defining layer (not shown), a light-emitting layer 3, and a cathode layer (not shown). The orthographic projection of the protrusion structure on the substrate covers the orthographic projection of the pixel defining layer on the substrate, and the orthographic projection of the black matrix on the substrate falls within the orthographic projection of the pixel defining layer on the substrate.

[0062] The design of the light-emitting structure layer is the same as that of the prior art. The anode layer includes multiple anodes, and the light-emitting layer 3 includes multiple light-emitting structures 31. The multiple light-emitting structures 31 and multiple anodes correspond one-to-one with the color filters arranged in rows and columns.

[0063] Specifically, the orthographic projection of the raised structure onto the substrate falls within the orthographic projection of the pixel defining layer onto the substrate, and the orthographic projection of the black matrix onto the substrate falls within the orthographic projection of the pixel defining layer onto the substrate. Neither the black matrix nor the raised structure blocks the light emitted by the light-emitting layer, maximizing the light-emitting area of ​​the pure color light path. This maximizes the color shift viewing angle while effectively ensuring the display effect on the front of the display substrate.

[0064] Reference Figure 6 The illustrated color filter structure layer shows three color filters from left to right: a green filter, a red filter, and a blue filter. For example, the first slope angles of the undercut structure between adjacent color filters from left to right are θ1=75°30′ and θ2=74°8′, respectively. The widths of the overlapping areas between adjacent color filters from left to right are d1=228.45nm and d2=243.76nm, respectively. The first slope angle is relatively steep, and the depth of the concave part corresponding to the undercut structure is relatively small. As a result, the pure color light emission area is wide at a wide viewing angle, the impure light path is greatly reduced at a wide viewing angle, and color shift is less likely to occur at a wide viewing angle, thus improving the display effect.

[0065] Furthermore, this embodiment of the invention provides a method for preparing a display substrate. Figure 3 The method for fabricating the display substrate shown includes:

[0066] Provide a substrate;

[0067] A transistor array layer, a light-emitting structure layer, and an encapsulation layer are sequentially formed on one side of a substrate.

[0068] A color filter structure layer is formed on the side of the encapsulation layer away from the substrate.

[0069] The specific formation process of the color filter structure layer includes:

[0070] A first colored adhesive layer is applied to the side of the encapsulation layer away from the substrate.

[0071] The first color adhesive layer is formed into a first filter by means of exposure, development and etching processes, and there is a first gap area between adjacent first filters;

[0072] A second colored adhesive layer is applied to the side of the encapsulation layer away from the substrate and within the first spacing region;

[0073] The second color adhesive layer is formed into a third filter by using exposure, development and etching processes, and there is a second gap area between adjacent third filters;

[0074] A third colored adhesive layer is applied to the side of the encapsulation layer away from the substrate and in the second spacing region;

[0075] The third color adhesive layer is formed into a second filter by using exposure, development and etching processes.

[0076] The resulting color filter structure layer includes color filters arranged in rows and columns. The first slope angle of the undercut structure is designed to be 60°~85°, and the width of the black matrix in the row direction is 100nm~300nm. While ensuring the blocking of cross-color between adjacent pixels, the light-emitting area of ​​the pure color light path can be increased to the maximum extent, thereby maximizing the color shift viewing angle, improving the color shift caused by the viewing angle, and enhancing the display effect.

[0077] This invention provides a display panel, including the aforementioned display substrate. The specific structure of the display substrate has been described in detail above, and therefore will not be repeated here.

[0078] This invention also provides a display device, including the aforementioned display panel. The specific type of display device is not particularly limited; any type of display device commonly used in the art is acceptable, such as mobile devices like mobile phones, wearable devices like watches, VR devices, etc. Those skilled in the art can select the appropriate device based on its specific application, and further details will not be elaborated here.

[0079] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0080] This invention uses terms such as "first," "second," etc., to describe various types of information, but these terms should not be limited to. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.

[0081] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0082] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A display substrate, characterized in that, include: The substrate and a color filter structure layer disposed on one side of the substrate, the color filter structure layer comprising rows and columns of color filters, the color filters being arranged sequentially and adjacent to each other in the row direction; The color filter structure layer has multiple undercut structures in the row direction. The undercut structures are formed at the adjacent sidewalls of every two adjacent color filters. The undercut structure includes a first arc-shaped portion protruding towards the substrate and a second arc-shaped portion protruding away from the substrate. The first arc-shaped portion is closer to the substrate than the second arc-shaped portion, and the two are connected in a direction perpendicular to the substrate. The slope angle of the first arc-shaped portion is greater than that of the second arc-shaped portion. Between every two adjacent color filters, the undercut structure includes a raised sidewall on one of the color filters and a recessed sidewall on the other color filter, the raised sidewall and the recessed sidewall being adapted to fit together in the row direction; The color filter having the recessed sidewalls also has protruding structures, each protruding structure corresponding to one of the recessed sidewalls, and the corresponding protruding structures are connected to the recessed sidewalls in a direction perpendicular to the substrate. The protruding structure includes a third arcuate portion and a fourth arcuate portion connected in the row direction. The third arcuate portion is connected to the recessed sidewall corresponding to the protruding structure, and the slope angle of the third arcuate portion is greater than the slope angle of the fourth arcuate portion.

2. The display substrate according to claim 1, characterized in that, The length of the first arc-shaped portion is greater than the length of the second arc-shaped portion.

3. The display substrate according to claim 1 or 2, characterized in that, The slope angle of the first arc-shaped portion is 60°~85°.

4. The display substrate according to claim 1, characterized in that, The rows and columns of color filters include a first filter, a second filter, and a third filter that are different colors from each other. The first filter has the raised sidewall, the second filter has the recessed sidewall, and the third filter has both the raised sidewall and the recessed sidewall. The substrate has multiple pixel regions, and each pixel region has a first filter, a second filter and a third filter; In the row direction and in each pixel region, the third filter is located between the first filter and the second filter; In the row direction, each pair of adjacent color filters has a different color.

5. The display substrate according to claim 4, characterized in that, The length of the second arc-shaped portion is greater than the length of the third arc-shaped portion.

6. The display substrate according to claim 4, characterized in that, The orthographic projection of the protrusion structure connected to the recessed sidewall on the substrate covers the orthographic projection of the protrusion sidewall corresponding to the recessed sidewall on the substrate. The overlapping portion between two adjacent color filters forms a black matrix. The black matrix corresponds one-to-one with the protrusion structure and one-to-one with the undercut structure. The orthographic projection of the protrusion structure on the substrate covers the orthographic projection of the black matrix on the substrate, and the orthographic projection of the black matrix on the substrate covers the orthographic projection of the undercut structure on the substrate.

7. The display substrate according to claim 6, characterized in that, It also includes a light-emitting structure layer, which is located on the side of the color filter structure layer close to the substrate. The light-emitting structure layer includes an anode layer, a pixel defining layer, a light-emitting layer, and a cathode layer. The orthographic projection of the protrusion structure on the substrate falls within the orthographic projection of the pixel defining layer on the substrate, and the orthographic projection of the black matrix on the substrate falls within the orthographic projection of the pixel defining layer on the substrate.

8. The display substrate according to claim 6 or 7, characterized in that, The width of the orthogonal projection of the undercut structure onto the substrate in the row direction is negatively correlated with the slope angle of the first arc-shaped portion.

9. The display substrate according to claim 6 or 7, characterized in that, The width of the black matrix in the row direction is 100nm~300nm.

10. A display panel, characterized in that, Includes the display substrate as described in any one of claims 1-9.

11. A display device, characterized in that, Includes the display panel as described in claim 10.

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