Display substrate and display device

Abstract

The invention provides a display substrate and a display device. The display substrate comprises a display area, and the display area comprises a plurality of sub-pixels; the display substrate comprises a substrate, a first electrode layer and a pixel definition layer which are sequentially stacked, the first electrode layer comprises a plurality of first electrodes arranged at intervals, each sub-pixel comprises a first electrode, and the pixel definition layer defines a plurality of pixel openings; the display substrate further comprises a plurality of shielding parts, the shielding parts are located on the side, away from the substrate, of the pixel defining layer, the sub-pixels comprise a plurality of first sub-pixels, and the first electrodes of at least part of the first sub-pixels comprise first sub-electrodes and second sub-electrodes which are located in the pixel openings and are oppositely arranged. In the third direction, the surface, far away from the substrate, of the second sub-electrode is farther away from the substrate than the surface, far away from the substrate, of the first sub-electrode; the plurality of shielding parts comprise a plurality of first sub-shielding parts, and at least one part of each first sub-shielding part is located on the side, away from the corresponding second sub-electrode, of the corresponding first sub-electrode.

Description

Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0002] Organic light emitting diode (OLED) display panels have the advantages of high brightness, wide color gamut, low power consumption and long life, and are widely used in life. In order to meet the market demand for narrow bezels and high image quality, the wiring density in the display panel is increased or the circuit under the anode of the light-emitting unit has an asymmetric design, which easily leads to the deterioration of the flatness of the anode of the light-emitting unit, thus causing color shift.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those skilled in the art. Summary of the invention

[0004] In one aspect, a display substrate is provided, comprising a display area, wherein the display area comprises a plurality of sub-pixels;

[0005] The display substrate comprises:

[0006] substrate substrate;

[0007] A first electrode layer, the first electrode layer is located on one side of the base substrate, the first electrode layer includes a plurality of first electrodes arranged at intervals, and each of the sub-pixels includes a first electrode;

[0008] A pixel definition layer, the pixel definition layer is located on a side of the first electrode layer away from the base substrate, the pixel definition layer includes a pixel definition portion, the pixel definition portion defines a plurality of pixel openings of the sub-pixels; and

[0009] A plurality of shielding parts, wherein the plurality of shielding parts are located on a side of the pixel definition layer away from the base substrate,

[0010] The plurality of sub-pixels include a plurality of first sub-pixels, and the first electrodes of at least some of the first sub-pixels include a first sub-electrode and a second sub-electrode located in the pixel opening and arranged opposite to each other.

[0011] Wherein, in a third direction, the second sub-electrode is farther away from the surface of the base substrate than the first sub-electrode is farther away from the surface of the base substrate, and the third direction is perpendicular to the light emitting surface of the display substrate; and

[0012] The plurality of shielding portions include a plurality of first sub-shielding portions, at least a portion of the first sub-shielding portions being located on a side of the first sub-electrode of the first sub-pixel away from the second sub-electrode.

[0013] According to some exemplary embodiments, the plurality of sub-pixels further include a plurality of second sub-pixels, and the first electrodes of at least some of the second sub-pixels include a third sub-electrode and a fourth sub-electrode located in the pixel opening and arranged opposite to each other.

[0014] Wherein, in the third direction, the fourth sub-electrode is away from the surface of the substrate, and is further away from the substrate than the third sub-electrode is away from the surface of the substrate; and

[0015] The shielding portion further includes a plurality of second sub-shielding portions, at least a portion of which is located on a side of the third sub-electrode of the second sub-pixel away from the fourth sub-electrode.

[0016] According to some exemplary embodiments, an orthographic projection of the shielding portion on the base substrate falls within an orthographic projection of the pixel definition layer on the base substrate; and

[0017] The orthographic projection of the shielding portion on the base substrate is arranged at an interval from the orthographic projection of the pixel opening on the base substrate.

[0018] According to some exemplary embodiments, an orthographic projection of the first electrode on the base substrate at least partially overlaps with an orthographic projection of the pixel defining portion on the base substrate;

[0019] The first electrode of the first sub-pixel includes a fifth sub-electrode overlapping with the projection of the pixel defining portion, and the orthographic projection of the fifth sub-electrode on the base substrate at least partially overlaps with the orthographic projection of the first sub-shielding portion on the base substrate; and / or,

[0020] The first electrode of the second sub-pixel includes a sixth sub-electrode overlapping with the projection of the pixel defining portion, and the orthographic projection of the sixth sub-electrode on the base substrate at least partially overlaps with the orthographic projection of the second sub-shielding portion on the base substrate.

[0021] According to some exemplary embodiments, the color of the light emitted by the first sub-pixel is the same as the color of the light emitted by the second sub-pixel; and / or,

[0022] The orthographic projection of the first electrode of the first subpixel on the base substrate includes a first side edge and a second side edge that are adjacent to each other, the first side edge extends along a first direction, the second side edge extends along a second direction, the width of the second side edge is greater than the width of the first side edge, the first direction and the second direction are parallel to the light emitting surface of the display substrate, and the first direction and the second direction intersect; and / or,

[0023] The orthographic projection of the first electrode of the second sub-pixel on the base substrate includes adjacent third side and fourth side, the third side extends along the first direction, the fourth side extends along the second direction, the width of the third side is greater than the width of the fourth side, the first direction and the second direction are parallel to the light emitting surface of the display substrate, and the first direction and the second direction intersect.

[0024] According to some exemplary embodiments, a shape of an orthographic projection of the shielding portion on the base substrate includes an L-shape.

[0025] According to some exemplary embodiments, the first sub-shielding portion includes a first portion extending along the first direction; the first portion of the first sub-shielding portion has a first width in the first direction, the first side has a second width, and a ratio of the first width to the second width is in the range of 0.8-1.2.

[0026] According to some exemplary embodiments, the pixel defining portion includes a first surface away from the base substrate, the first surface includes a fifth side close to the pixel opening,

[0027] In the second direction, the first portion of the first sub-shielding portion is spaced apart from the fifth side by a first spacing distance; the first portion of the first sub-shielding portion has a third width in the second direction, and the third width is greater than the first spacing distance.

[0028] According to some exemplary embodiments, in the second direction, the first portion of the first sub-shielding portion is spaced apart from the pixel opening of the first sub-pixel by a second spacing distance;

[0029] The first sub-shielding portion also includes a second portion extending along the second direction, wherein the second portion is spaced apart from the pixel opening of the first sub-pixel by a third spacing distance in the first direction, and a ratio of the third spacing distance to the second spacing distance is in the range of 0.8-1.2.

[0030] According to some exemplary embodiments, the second portion of the first sub-shielding portion has a fourth width in the second direction, and a ratio of the fourth width to the first width is in a range of 0.8-1.2.

[0031] According to some exemplary embodiments, the third side of the second sub-pixel has a fifth width, the second sub-shielding portion includes a third portion, the third portion extends along the first direction, the third portion has a sixth width in the first direction, and the fifth width is greater than the sixth width.

[0032] According to some exemplary embodiments, the fourth side of the second sub-pixel has a seventh width, the second sub-shielding portion includes a fourth portion, the fourth portion extends along the second direction, the fourth portion has an eighth width in the second direction, and a ratio of the seventh width to the eighth width is in the range of 0.8-1.2.

[0033] According to some exemplary embodiments, the plurality of sub-pixels further include a plurality of third sub-pixels, the area of ​​the orthographic projection of the pixel opening of the third sub-pixels on the substrate is larger than the area of ​​the orthographic projection of the pixel opening of the first sub-pixel on the substrate, and at least part of the second portion of the first sub-shielding portion is located between the adjacent pixel openings of the first sub-pixel and the third sub-pixel; and / or,

[0034] The plurality of sub-pixels further include a plurality of fourth sub-pixels, the area of ​​the orthographic projection of the pixel opening of the fourth sub-pixel on the substrate is smaller than the area of ​​the orthographic projection of the pixel opening of the third sub-pixel on the substrate, and at least a first portion of the first sub-shielding portion is located between the pixel opening of the first sub-pixel and the pixel opening of the fourth sub-pixel that are adjacent to each other; and / or,

[0035] At least part of the third portion of the second sub-shielding portion is located between the pixel opening of the second sub-pixel and the pixel opening of the fourth sub-pixel that are adjacent to each other; and / or,

[0036] At least part of the fourth portion of the second sub-shielding portion is located between the adjacent pixel opening of the second sub-pixel and the pixel opening of the third sub-pixel.

[0037] According to some exemplary embodiments, the first spacing distance is in a range from 1 micrometer to 2 micrometers.

[0038] According to some exemplary embodiments, the shielding portion has a first thickness in the third direction, and the first thickness is in a range of 2.1 micrometers to 2.7 micrometers.

[0039] According to some exemplary embodiments, the display substrate further includes a plurality of isolation columns, wherein the isolation columns are located between adjacent pixel openings, the shielding portion is spaced apart from an orthographic projection of the isolation columns on the base substrate, and the shielding portion is located between adjacent isolation columns and the pixel openings.

[0040] According to some exemplary embodiments, the plurality of shielding portions and the plurality of isolation columns are located in a same layer.

[0041] According to some exemplary embodiments, the display substrate also includes a first conductive layer located between the first electrode layer and the base substrate, the first conductive layer includes a plurality of first conductive portions, the orthographic projection of the first conductive portion on the base substrate at least partially overlaps with the orthographic projection of the first electrode of the first sub-pixel on the base substrate; and / or the orthographic projection of the first conductive portion on the base substrate at least partially overlaps with the orthographic projection of the first electrode of the second sub-pixel on the base substrate.

[0042] In another aspect, a display device is provided, wherein the display device comprises the display substrate as described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above contents and other objects, features and advantages of the present disclosure will become more apparent through the following description of the embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0044] Figure 1 is a schematic plan view of a display substrate according to an embodiment of the present disclosure;

[0045] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the middle S1 region;

[0046] Figure 3 is along Figure 2 Schematic diagram of a cross section taken along the midline AA';

[0047] Figures 4A-4C They are respectively partial plan views of some film layers of a display substrate according to an embodiment of the present disclosure;

[0048] Figure 5 is a partially enlarged schematic diagram of a display substrate according to an embodiment of the present disclosure;

[0049] Figure 6 yes Figure 5 A partial enlarged schematic diagram of the middle S2 region;

[0050] Figure 7 yes Figure 5 A partial enlarged schematic diagram of the middle S3 region;

[0051] Figure 8 is along Figure 5 Schematic diagram of the cross section taken along the midline BB';

[0052] Fig. 9is a partially enlarged schematic diagram of a display substrate according to an embodiment of the present disclosure;

[0053] Fig.10 is along Fig. 9 A schematic cross-sectional view taken along the center line CC'; and

[0054] Fig.11 is a structural block diagram of a display device according to an embodiment of the present disclosure.

[0055] It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present invention, the sizes of layers, structures or regions may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0057] It should be noted that in the drawings, the size and relative size of the elements may be exaggerated for the purpose of clarity and / or description. Thus, the size and relative size of each element are not necessarily limited to the size and relative size shown in the drawings. In the specification and drawings, the same or similar reference numerals indicate the same or similar parts.

[0058] Unless otherwise defined, the technical terms or scientific terms used in this disclosure should be understood by ordinary technicians in the field. "First", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0059] In this document, unless otherwise specified, directional terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship based on the drawings, and are only for the convenience of describing the present disclosure, and do not indicate or imply that the device, element or component referred to must have a specific orientation, be constructed or operate in a specific orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms should not be understood as limiting the present disclosure.

[0060] As used herein, the terms "substantially," "approximately," "approximately," and other similar terms are used as terms of approximation rather than as terms of degree, and they are intended to account for the inherent deviations in measured or calculated values ​​that would be recognized by one of ordinary skill in the art. Taking into account factors such as process fluctuations, measurement problems, and errors associated with the measurement of a particular quantity (i.e., limitations of the measurement system), "approximately" or "approximately" as used herein include the stated value and mean that the particular value is within an acceptable range of deviation as determined by one of ordinary skill in the art. For example, "approximately" can mean within one or more standard deviations, or within ±10% or ±5% of the stated value.

[0061] In this document, directional expressions "first direction", "second direction" and "third direction" are used to describe different directions of the display substrate, such as the row direction and column direction of sub-pixels. It should be understood that such representation is only an exemplary description and not a limitation of the present disclosure.

[0062] In this document, unless otherwise specified, the expression "electrically connected" may mean that two parts or elements are directly electrically connected, for example, part or element A is in direct contact with part or element B, and electrical signals can be transmitted between the two parts; it may also mean that two parts or elements are electrically connected through a conductive medium such as a conductive wire, for example, part or element A is electrically connected to part or element B through a conductive wire to transmit electrical signals between the two parts or elements; it may also mean that two parts or elements are electrically connected through at least one electronic component, for example, part or element A is electrically connected to part or element B through at least one thin film transistor to transmit electrical signals between the two parts or elements.

[0063] In this article, "parallel" or "substantially parallel" refers to a state where the angle formed by two straight lines is greater than -10° and less than 10°, and therefore, also includes a state where the angle is greater than -5° and less than 5°. In addition, "perpendicular" refers to a state where the angle formed by two straight lines is greater than 80° and less than 100°, and therefore, also includes a state where the angle is greater than 85° and less than 95°.

[0064] In order to facilitate the understanding of relevant personnel, some technical terms of the present disclosure are briefly explained.

[0065] Objective value of color deviation: Colored light has three objective properties, including dominant wavelength, purity and luminance. The dominant wavelength is the length of the dominant wavelength in the colored light, which determines the color (hue) of the colored light; purity is a measure of spectral purity, that is, how much white light is mixed in the pure color light; and luminance refers to the brightness of the light.

[0066] Some OLED display panels use stacked OLED technology, which connects multiple light-emitting layers in series through a charge generation layer, and can have advantages such as high brightness, wide color gamut, low power consumption, and long life. In order to meet the market demand for narrow bezels and high image quality, some display panels have backplane circuits with dense routing and / or asymmetric circuit designs under the light-emitting layer, which can easily lead to poor flatness of the anode of the light-emitting unit, resulting in color deviation problems in display products.

[0067] In some display panels, the color deviation asymmetry of the product is mainly manifested in the difference between the two sides of the green sub-pixel. For example, the anodes of the red and blue sub-pixels are mainly designed as metal wiring layers, which are relatively symmetrical. However, the anode of the green sub-pixel is mainly designed as a multi-layer overlapping metal pad, and there is an asymmetric design, which easily causes the anode layer of the green sub-pixel to tilt to one side, increasing the difference in the slope angles on both sides of the anode, and then resulting in different degrees of brightness attenuation on both sides, asymmetric color deviation trajectories, larger differences in objective color deviation values, and differences in visual image quality on both sides of the product.

[0068] An embodiment of the present disclosure provides a display substrate. Specifically, the display substrate includes a display area, and the display area includes a plurality of sub-pixels. The display substrate includes: a substrate substrate; a first electrode layer, the first electrode layer is located on one side of the substrate substrate, the first electrode layer includes a plurality of first electrodes arranged at intervals, and each sub-pixel includes a first electrode; a pixel definition layer, the pixel definition layer is located on the side of the first electrode layer away from the substrate substrate, the pixel definition layer includes a pixel definition part, and the pixel definition part defines the pixel openings of the plurality of sub-pixels; and a plurality of shielding parts, the plurality of shielding parts are located on the side of the pixel definition layer away from the substrate substrate. Among them, the plurality of sub-pixels include a plurality of first sub-pixels, and the first electrodes of at least some of the first sub-pixels include a first sub-electrode and a second sub-electrode located at the pixel opening and arranged oppositely. Among them, in the third direction, the second sub-electrode is away from the surface of the substrate substrate, and is further away from the substrate substrate than the first sub-electrode is away from the surface of the substrate substrate, and the third direction is perpendicular to the light-emitting surface of the display substrate; and the plurality of shielding parts include a plurality of first sub-shielding parts, and at least a part of the first sub-shielding parts is located on the side of the first sub-electrode of the first sub-pixel away from the second sub-electrode.

[0069] With such a design, the shielding portion can be used to shield part of the light leaking from one side of the sub-pixel due to the tilted electrode, which is beneficial to reducing the light output difference on both sides of the sub-pixel, thereby improving color deviation and enhancing the display effect of the display substrate.

[0070] Figure 1 is a schematic plan view of a display substrate according to an embodiment of the present disclosure.

[0071] Exemplarily, in an embodiment of the present disclosure, a display substrate 100 is provided. Figure 1The display substrate 100 may include a base substrate 1 , and the base substrate 1 includes a display area AA and a peripheral area NA surrounding the display area AA.

[0072] The display area AA may have various shapes. For example, the display area AA may be provided in various shapes such as a polygon (e.g., a rectangle) of a closed shape including straight edges, a circle, an ellipse, etc. including curved edges, and a semicircle, a semi-ellipse, etc. including straight edges and curved edges. In an embodiment of the present disclosure, the display area AA is provided as an area having a quadrilateral shape including straight edges, and it should be understood that this is only an exemplary embodiment of the present disclosure, and not a limitation of the present disclosure. The peripheral area NA may be provided on at least one side of the display area AA. In an embodiment of the present disclosure, the peripheral area NA may surround the periphery of the display area AA.

[0073] Exemplarily, the display substrate 100 may further include a plurality of pixel units PX. The plurality of pixel units are located in the display area AA. The pixel unit PX is the smallest unit for displaying an image and may be provided in plurality. For example, the pixel unit PX may include a light emitting device that emits white light and / or colored light.

[0074] The pixel unit PX may be provided in plurality, so as to be arranged in a matrix form along rows extending in a first arrangement direction X and columns extending in a second arrangement direction Y. The first arrangement direction X and the second arrangement direction Y are parallel to the light emitting surface of the display substrate, and the first arrangement direction X and the second arrangement direction Y intersect. However, the embodiments of the present disclosure do not specifically limit the arrangement form of the pixel unit PX, and the pixel unit PX may be arranged in various forms. For example, the pixel unit PX may be arranged so that a direction inclined relative to the first arrangement direction X and the second arrangement direction Y becomes a column direction, and a direction intersecting the column direction becomes a row direction.

[0075] Figure 2 yes Figure 1 A partial enlarged schematic diagram of the S1 region in the middle. Figure 3 is along Figure 2 Schematic diagram of the cross section taken along the midline AA'.

[0076] Exemplarily, at least one pixel unit PX may include a plurality of sub-pixels. The plurality of sub-pixels may include a plurality of light emitting devices, such as red OLED devices, green OLED devices, blue OLED devices and / or white OLED devices.

[0077] In some embodiments, at least one pixel unit PX may include a first subpixel sp1, a third subpixel sp3, and a fourth subpixel sp4. For example, the first subpixel sp1 is a green subpixel, the third subpixel sp3 is a blue subpixel, and the fourth subpixel sp4 is a red subpixel.

[0078] In some embodiments, at least one pixel unit PX may include a first subpixel sp1, a second subpixel sp2, a third subpixel sp3, and a fourth subpixel sp4. For example, the first subpixel sp1 is a green subpixel, the second subpixel sp2 is a green subpixel, the third subpixel sp3 is a blue subpixel, and the fourth subpixel sp4 is a red subpixel.

[0079] For example, in conjunction with reference Figure 2 and Figure 3 The display substrate 100 may include: a base substrate 1; a first electrode layer 5, the first electrode layer 5 is located on one side of the base substrate 1, and the first electrode layer 5 includes a plurality of first electrodes 51 arranged at intervals. Each sub-pixel includes a first electrode 51, for example, the first sub-pixel sp1 includes a first electrode 511 of the first sub-pixel sp1, and the second sub-pixel sp2 includes a first electrode 512 of the second sub-pixel sp2.

[0080] Exemplarily, the first electrode 51 may be an anode of the light emitting device. For example, the first electrode 51 may include a transparent conductive material, such as an ITO material.

[0081] Exemplarily, the display substrate 100 may further include a pixel definition layer PDL. The pixel definition layer PDL is located on a side of the first electrode layer 5 away from the base substrate 1, and the pixel definition layer PDL includes a pixel definition portion PDL1, and the pixel definition portion PDL1 may define a plurality of pixel openings VH1 of sub-pixels. Figure 2 The first sub-pixel sp1 includes a first pixel opening VH11, the second sub-pixel sp2 includes a second pixel opening VH12, the third sub-pixel sp3 includes a third pixel opening VH13, and the fourth sub-pixel sp4 includes a fourth pixel opening VH14. The pixel opening VH1 may be an opening area including a light emitting area.

[0082] It should be noted that the embodiments of the present disclosure do not impose any particular restrictions on the design of the pixel opening VH1. For example, although the accompanying drawings schematically show that the pixel opening VH1 is a rectangle, in other embodiments, the pixel opening may also be a square, elliptical, circular, triangular or other shapes. In addition, the light-emitting units of different colors corresponding to different pixel openings may adopt various arrangement methods known in the art, and the embodiments of the present disclosure do not impose any particular restrictions.

[0083] Exemplarily, the display substrate 100 may further include: a light-emitting functional layer 7 located on the side of the pixel definition layer PDL away from the base substrate 1; and a second electrode layer 8 located on the side of the light-emitting functional layer 7 away from the base substrate 1. For example, the light-emitting functional layer 7 may include multiple film layers such as an electron injection layer, an electron transport layer, a first light-emitting layer, a hole transport layer, a charge generation layer, and a second light-emitting layer. The second electrode layer 8 may include a second electrode, and the second electrode may be a cathode of the light-emitting device. Exemplarily, the material of the second electrode may include aluminum, silver, magnesium-silver alloy, and the like.

[0084] Figures 4A-4C They are respectively partial plan views of some film layers of a display substrate according to embodiments of the present disclosure.

[0085] For example, refer to Figure 3 The display substrate 100 may further include a first conductive layer 3 between the first electrode layer 5 and the base substrate 1 . The first conductive layer 3 may include a plurality of first conductive portions 31 .

[0086] For example, refer to Figure 4A , an orthographic projection of the first conductive portion 31 on the base substrate at least partially overlaps with an orthographic projection of the first electrode 511 of the first sub-pixel sp1 on the base substrate.

[0087] For example, refer to Figure 4B , the orthographic projection of the first conductive portion 31 on the base substrate at least partially overlaps with the orthographic projection of the first electrode 512 of the second sub-pixel sp2 on the base substrate.

[0088] Through such a design, the space in the direction perpendicular to the light emitting surface of the display substrate can be fully utilized, thereby improving the wiring density of the display substrate, which is conducive to achieving a narrow frame of the display substrate.

[0089] In some embodiments, the arrangement direction of the first conductive portion 31 and the arrangement direction of the first electrodes 51 may be different.

[0090] For example, in conjunction with reference Figure 4A and 4B The side of the first conductive portion 31 may extend along the first arrangement direction X, and / or the side of the first conductive portion 31 may extend along the second arrangement direction Y. The side of the first electrode 51 may extend along the first direction D1, and / or the side of the first electrode 51 may extend along the second direction D2. The first direction D1 and the second direction D2 may be parallel to the light emitting surface of the display substrate, and the first direction D1 and the second direction D2 intersect.

[0091] For example, the first direction D1 may intersect with the first arrangement direction X, and the second direction D2 may intersect with the second arrangement direction Y.

[0092] Through such a design, the shape, size and position of some metal pads in the driving circuit and the first electrode of the sub-pixel can be designed more flexibly, which can improve the design flexibility of the display substrate, help improve the routing density of the display substrate, and achieve a narrow frame of the display substrate.

[0093] However, since the orthographic projection of part of the first conductive portion 31 on the base substrate is asymmetric with respect to the orthographic projection of the first electrode 51 on the base substrate, the flatness of the first electrode 51 may be deteriorated. Figure 3 The surface of the first electrode 51 of some sub-pixels is not parallel to the light emitting surface of the display substrate. For example, the surface of the first electrode 51 of some sub-pixels is inclined toward one side of the pixel opening, which may cause color deviation and affect the display effect.

[0094] In some embodiments, the surface of the first electrode 51 of some sub-pixels away from the substrate is uneven, so that the slope angles of the sidewalls of the pixel definition layer PDL that are in contact with the first electrode 51 are different on two opposite sides of the pixel opening. The "slope angle" of the sidewall of the pixel definition layer refers to the angle between the sidewall of the pixel definition layer and the horizontal direction.

[0095] For example, in the process of forming the pixel opening, the pixel definition layer usually forms a side region with a gradually decreasing thickness (or height), and the side region includes a side wall close to the pixel opening VH1. Figure 3 and Figure 4C , the pixel definition layer PDL may further include a plurality of second openings VH2. The orthographic projection of the pixel opening VH1 on the base substrate may fall within the orthographic projection of the second opening VH2 on the base substrate. The pixel definition layer PDL may include a sidewall PDL10 located outside the pixel opening VH1 and located at the second opening VH2. For example, the pixel definition layer PDL may include: a first side (e.g., Figure 3 and a first side wall PDL101 close to the first electrode 51 (eg, Figure 3 The second side wall PDL102 (on the right side) in FIG.

[0096] In some embodiments, a slope angle θ1 of the first sidewall PDL101 is smaller than a slope angle θ2 of the second sidewall PDL102 .

[0097] Exemplarily, the display substrate may further include a barrier layer 2 located between the base substrate 1 and the first conductive layer 3. For example, the barrier layer 2 may prevent water vapor from corroding the light-emitting device, which is beneficial to improving the life of the display substrate.

[0098] Exemplarily, the display substrate may further include a planarization layer 4 located between the first conductive layer 3 and the first electrode layer 5 .

[0099] In some embodiments, a portion of the planarization layer 4 (e.g., the pixel opening VH1 region) has a metal pad (e.g., the first conductive portion 31) disposed at the bottom, which causes the surface of the planarization layer 4 away from the base substrate to be uneven in this region, which may cause the surface of the first electrode of some sub-pixels in the pixel opening region to be uneven. In some embodiments, the metal pad in the pixel opening region may be located in one or more conductive film layers.

[0100] Since the two opposite sides of the first electrode 51 of some sub-pixels are uneven or asymmetric, the part of the sub-pixels may have one side (eg Figure 3 The light intensity on the left side of the image is greater than that on the other side (e.g. Figure 3 The light output intensity of the display substrate is increased (on the right side in the figure), resulting in color shift problems on the display substrate in different directions.

[0101] In order to improve the color shift problem of the display substrate, some embodiments of the present disclosure provide a display substrate, which may include a shielding portion arranged on the strong light side close to some sub-pixels. The shielding portion can shield part of the light leaking from the strong light side, thereby reducing the light output difference on both sides of the sub-pixel and improving the color shift problem of the display substrate.

[0102] Figure 5 is a partial enlarged schematic diagram of a display substrate according to an embodiment of the present disclosure, Figure 6 yes Figure 5 A partial enlarged schematic diagram of the S2 region in the middle. Figure 7 yes Figure 5 A partial enlarged schematic diagram of the S3 region in the middle. Figure 8 is along Figure 5 Schematic diagram of the cross section taken along the midline BB'.

[0103] For example, in the embodiments of the present disclosure, in combination with reference Figure 5 and Figure 8 The display substrate may include: a base substrate 1; a first electrode layer 5, the first electrode layer 5 is located on one side of the base substrate 1; a pixel definition layer PDL, the pixel definition layer PDL is located on a side of the first electrode layer 5 away from the base substrate 1; and a plurality of shielding portions PS, the plurality of shielding portions PS are located on a side of the pixel definition layer PDL away from the base substrate 1.

[0104] For example, in conjunction with reference Figure 5 , Figure 6 and Figure 8, the plurality of sub-pixels may include a plurality of first sub-pixels sp1. The first electrode 511 of at least some of the first sub-pixels sp1 includes a first sub-electrode 5111 and a second sub-electrode 5112 located at the pixel opening VH1 and arranged opposite to each other. In the third direction D3, the second sub-electrode 5112 is away from the surface of the substrate 1, and is further away from the substrate 1 than the first sub-electrode 5111 is away from the surface of the substrate 1, wherein the third direction D3 is perpendicular to the light emitting surface of the display substrate. The plurality of shielding portions PS includes a plurality of first sub-shielding portions PS|, and at least a portion of the first sub-shielding portion PS1 is located on a side of the first sub-electrode 5111 of the first sub-pixel sp1 away from the second sub-electrode 5112.

[0105] With such a design, the first sub-shielding portion can shield part of the light leaking from the side close to the first sub-electrode, thereby reducing the light output difference between the two sides of the first sub-pixel and improving the color deviation problem of the display substrate.

[0106] Exemplarily, the first sub-pixel sp1 may be a green sub-pixel. In some display substrates, a metal pad is provided in the driving circuit layer below the green sub-pixel, which may cause the surface of the first electrode of the green sub-pixel to be uneven. By providing a shielding portion on one side of the green sub-pixel (e.g., the side with higher light intensity), the color deviation problem of the display substrate can be improved, which is beneficial to improving the display effect of the display substrate.

[0107] For example, in some embodiments of the present disclosure, in combination with reference Figure 5 , Figure 7 and Figure 8 , the plurality of sub-pixels further include a plurality of second sub-pixels sp2. The first electrodes 512 of at least some of the second sub-pixels sp2 include a third sub-electrode 5123 and a fourth sub-electrode 5124 located at the pixel opening VH1 and arranged opposite to each other. In the third direction D3, the fourth sub-electrode 5124 is away from the surface of the base substrate 1, and is further away from the base substrate 1 than the surface of the third sub-electrode 5123 away from the base substrate 1. The shielding portion PS further includes a plurality of second sub-shielding portions PS2. At least a portion of the second sub-shielding portion PS2 is located on a side of the third sub-electrode 5123 of the second sub-pixel sp2 away from the fourth sub-electrode 5124.

[0108] With such a design, the second sub-shielding portion can shield part of the light leaking from the side close to the third sub-electrode, thereby reducing the light output difference between the two sides of the second sub-pixel and improving the color deviation problem of the display substrate.

[0109] Exemplarily, the color of the light emitted by the second sub-pixel sp2 may be the same as the color of the light emitted by the first sub-pixel sp1. For example, the second sub-pixel sp2 and the first sub-pixel sp1 may both be green sub-pixels.

[0110] For example, the arrangement directions of the pixel openings of the first sub-pixel sp1 and the second sub-pixel sp2 may be different. Figure 6 and Figure 7 , a first side (e.g., short side) vh111 of the first pixel opening VH11 of the first subpixel sp1 extends along the first direction D1, and a second side (e.g., long side) vh112 extends along the second direction D2. A third side (e.g., long side) vh123 of the second pixel opening VH12 of the second subpixel sp2 extends along the first direction D1, and a fourth side (e.g., short side) vh124 extends along the second direction D2.

[0111] For example, refer to Figure 5 , the orthographic projection of the shielding portion PS on the base substrate falls into the orthographic projection of the pixel definition layer PDL1 on the base substrate.

[0112] Exemplarily, the orthographic projection of the shielding portion PS on the base substrate is spaced apart from the orthographic projection of the pixel opening VH1 on the base substrate.

[0113] In some embodiments, the orthographic projection of the first electrode 51 on the base substrate at least partially overlaps with the orthographic projection of the pixel defining portion PDL1 on the base substrate. Figure 5 and Figure 6 The first electrode 511 of the first sub-pixel sp1 includes a fifth sub-electrode 5115 that overlaps with the pixel defining portion PDL1. The orthographic projection of the fifth sub-electrode 5115 on the base substrate at least partially overlaps with the orthographic projection of the first sub-shielding portion PS1 on the base substrate.

[0114] Exemplarily, the fifth sub-electrode 5115 further includes a first conductive transition portion 501. The first conductive transition portion 501 may be electrically connected to the driving circuit layer.

[0115] Exemplarily, the first conductive transition portion 501 may be located on a side of the first sub-shielding portion PS1 away from the second sub-electrode 5112 .

[0116] In some embodiments, in conjunction with reference Figure 5 and Figure 7 The first electrode 512 of the second sub-pixel sp2 may include a sixth sub-electrode 5126 that overlaps with the pixel defining portion PDL1. The orthographic projection of the sixth sub-electrode 5126 on the base substrate at least partially overlaps with the orthographic projection of the second sub-shielding portion PS2 on the base substrate.

[0117] Exemplarily, the sixth sub-electrode 5126 further includes a second conductive transition portion 502. The second conductive transition portion 502 may be electrically connected to the driving circuit layer.

[0118] For example, the second conductive transition portion 502 may be located on a side of the second sub-shielding portion PS2 away from the fourth sub-electrode 5124 .

[0119] By respectively setting up multiple shielding parts on the strong light side of multiple sub-pixels, the positions of the multiple shielding parts can be arranged accordingly according to the different arrangements of the first electrodes of the multiple sub-pixels, so that the light on the strong light side of the multiple sub-pixels can be blocked respectively, which is beneficial to improving the color deviation problem of the display substrate.

[0120] In some embodiments, in order to evenly block the light within a certain angle range on the strong light side, the shape of the blocking portion may be optimized.

[0121] Exemplarily, the shape of the orthographic projection of the shielding portion PS on the substrate includes an L-shape. In some embodiments, the shape of the orthographic projection of the shielding portion PS on the substrate may also include a shape approximating an L-shape, such as a V-shape, a C-shape, and the like.

[0122] Through such a design, light within a certain angle range on the strong light side of some sub-pixels can be evenly blocked, so that the light intensity at each angle is more consistent, which is beneficial to improving color deviation and enhancing the display effect of the display substrate.

[0123] For example, refer to Figure 6 The orthographic projection of the first electrode 511 of the first sub-pixel sp1 on the base substrate includes a first side L1 and a second side L2 adjacent to each other. The first side L1 extends along a first direction D1, and the second side L2 extends along a second direction D2. The width of the second side L2 is greater than the width of the first side L1. The first direction D1 and the second direction D2 are parallel to the light emitting surface of the display substrate, and the first direction D1 and the second direction D2 intersect.

[0124] Exemplarily, the first sub-shielding portion PS1 includes a first portion PS11. The first portion PS11 extends along the first direction D1. The first portion PS11 of the first sub-shielding portion has a first width d1 in the first direction D1, and the first side L1 has a second width d2.

[0125] Exemplarily, the first width d1 is substantially equal to the second width d2. For example, the ratio of the first width d1 to the second width d2 is in the range of 0.8-1.2.

[0126] With such a design, the light on the first side L1 can be shielded more completely, and an obvious brightness difference phenomenon in the area near the first side can be avoided.

[0127] Exemplarily, the first sub-shielding portion PS1 further includes a second portion PS12. The second portion PS12 extends along the second direction D2 and has a fourth width d4 in the second direction D2.

[0128] Exemplarily, the widths of the first portion PS11 and the second portion PS12 may be substantially the same. For example, the ratio of the fourth width d4 to the first width d1 is in the range of 0.8-1.2.

[0129] Through such a design, the shielding effect of the shielding part on light within a certain angle range can be balanced, which is beneficial to improving the uniformity of the light output intensity of the sub-pixel at various angles, thereby improving color deviation.

[0130] For example, continue to refer to Figure 6 , in the second direction D2, the first portion PS11 of the first sub-shielding portion is spaced apart from the pixel opening VH11 of the first sub-pixel by a second spacing distance m2. In the first direction D1, the second portion PS12 is spaced apart from the pixel opening VH11 of the first sub-pixel by a third spacing distance m3. Exemplarily, the ratio of the third spacing distance m3 to the second spacing distance m2 is in the range of 0.8-1.2.

[0131] Through such a design, the shielding effect of the shielding portion on the light in the areas near the first side and the second side is more consistent, which is beneficial to further improve the uniformity of the light output intensity of the sub-pixel at various angles, thereby improving color deviation.

[0132] In some embodiments, in conjunction with reference Figure 6 and Figure 8 The pixel defining portion PDL1 includes a first surface PDL11 away from the base substrate. The first surface PDL11 includes a fifth side L5 close to the pixel opening VH1. For example, the fifth side L5 is a side where the first surface PDL11 intersects the second opening VH2.

[0133] Exemplarily, in the second direction D2, the first portion PS11 of the first sub-shielding portion is spaced apart from the fifth side L5 by a first spacing distance m1. The first portion PS11 of the first sub-shielding portion has a third width d3 in the second direction D2. Exemplarily, the third width d3 is greater than the first spacing distance m1. For example, the third width d3 is approximately 1.7 microns, and the first spacing distance m1 is approximately 1.5 microns.

[0134] Exemplarily, the first spacing distance m1 is in the range of 1 micrometer to 2 micrometers.

[0135] For example, refer to Figure 8 The shielding portion PS has a first thickness h1 in the third direction D3. The first thickness h1 is in a range of 2.1 micrometers to 2.7 micrometers. For example, the first thickness h1 is about 2.4 micrometers.

[0136] By adjusting the size of the shielding portion (such as width and height) and the distance between the shielding portion and the pixel opening, the shielding effect of the shielding portion on the light emitted by the sub-pixel can be adjusted. For example, if the height of the shielding portion is increased, the shielding ability of the light emitted by the sub-pixel is improved, and the light can be shielded to a greater extent. Through such a design, the light intensity at each angle can be better adjusted, thereby improving color deviation.

[0137] For example, refer to Figure 7 The orthographic projection of the first electrode 512 of the second sub-pixel sp2 on the base substrate includes a third side L3 and a fourth side L4 adjacent to each other. The third side L3 extends along the first direction D1, and the fourth side L4 extends along the second direction D2. The width of the third side L3 is greater than the width of the fourth side L4. The first direction D1 and the second direction D2 are parallel to the light emitting surface of the display substrate, and the first direction D1 and the second direction D2 intersect.

[0138] Exemplarily, the third side L3 of the second subpixel has a fifth width d5. The second sub-shielding portion PS2 includes a third portion PS23, the third portion PS23 extends along the first direction D1, and the third portion PS23 has a sixth width d6 in the first direction D1. Exemplarily, the fifth width d5 ​​is greater than the sixth width d6.

[0139] Exemplarily, the fourth side L4 of the second sub-pixel has a seventh width d7. The second sub-shielding portion PS2 includes a fourth portion PS24, the fourth portion PS24 extends along the second direction D2, and the fourth portion PS24 has an eighth width d8 in the second direction D2. Exemplarily, the ratio of the seventh width d7 to the eighth width d8 is in the range of 0.8-1.2.

[0140] Through such a design, the shielding effect of the shielding part on light within a certain angle range can be balanced, which is beneficial to improving the uniformity of the light output intensity of the sub-pixel at various angles, thereby improving color deviation.

[0141] For example, continue to combine with reference Figure 5 and Figure 6 The plurality of sub-pixels may further include a plurality of third sub-pixels sp3. The area of ​​the orthographic projection of the pixel opening VH13 of the third sub-pixel sp3 on the substrate is larger than the area of ​​the orthographic projection of the pixel opening VH11 of the first sub-pixel sp1 on the substrate. For example, the third sub-pixel sp3 is a blue sub-pixel.

[0142] Exemplarily, at least part of the second portion PS12 of the first sub-shielding portion PS1 is located between the pixel opening VH11 of the adjacent first sub-pixel and the pixel opening VH13 of the third sub-pixel sp3.

[0143] Exemplarily, the plurality of sub-pixels may further include a plurality of fourth sub-pixels sp4. The area of ​​the orthographic projection of the pixel opening VH14 of the fourth sub-pixel sp4 on the substrate is smaller than the area of ​​the orthographic projection of the pixel opening VH13 of the third sub-pixel sp3 on the substrate. For example, the fourth sub-pixel sp4 may be a red sub-pixel.

[0144] Exemplarily, at least part of the first portion PS11 of the first sub-shielding portion PS1 is located between the pixel opening VH11 of the adjacent first sub-pixel sp1 and the pixel opening VH14 of the adjacent fourth sub-pixel sp4.

[0145] In some embodiments, at least part of the second portion PS12 of the first sub-shielding portion PS1 may be located between the pixel opening VH11 of the adjacent first sub-pixel sp1 and the pixel opening VH14 of the fourth sub-pixel sp4. At least part of the first portion PS11 of the first sub-shielding portion PS1 may be located between the pixel opening VH11 of the adjacent first sub-pixel sp1 and the pixel opening VH13 of the third sub-pixel sp3.

[0146] For example, continue to combine with reference Figure 5 and Figure 7 , at least part of the third portion PS23 of the second sub-shielding portion PS2 is located between the pixel opening VH12 of the adjacent second sub-pixel sp2 and the pixel opening VH13 of the adjacent third sub-pixel sp3.

[0147] Exemplarily, at least part of the fourth portion PS24 of the second sub-shielding portion PS2 is located between the pixel opening VH12 of the adjacent second sub-pixel sp2 and the pixel opening VH14 of the adjacent fourth sub-pixel sp4.

[0148] In some embodiments, at least part of the third portion PS23 of the second sub-shielding portion PS2 may be located between the pixel opening VH12 of the adjacent second sub-pixel sp2 and the pixel opening VH14 of the adjacent fourth sub-pixel sp4 .

[0149] For example, at least part of the fourth portion PS24 of the second sub-shielding portion PS2 may be located between the pixel opening VH12 of the adjacent second sub-pixel sp2 and the pixel opening VH13 of the adjacent third sub-pixel sp3 .

[0150] Exemplarily, the spacing distance between at least part of the first sub-shielding portion PS1 and the pixel opening of the adjacent first sub-pixel sp1 is smaller than the spacing distance between the first sub-shielding portion PS1 and the pixel opening of the adjacent third sub-pixel sp3 or the pixel opening of the adjacent fourth sub-pixel sp4.

[0151] Exemplarily, the spacing distance between at least part of the second sub-shielding portion PS2 and the pixel opening of the adjacent second sub-pixel sp2 is smaller than the spacing distance between the second sub-shielding portion PS2 and the pixel opening of the adjacent third sub-pixel sp3 or the pixel opening of the adjacent fourth sub-pixel sp4.

[0152] Through such a design, while ensuring the shading effect of the shading part on the first sub-pixel and / or the second sub-pixel, the influence of the shading part on the third sub-pixel and the fourth sub-pixel can be minimized, which is beneficial to ensuring the overall light output brightness of the pixel unit while improving color deviation.

[0153] Fig. 9 is a partial enlarged schematic diagram of a display substrate according to an embodiment of the present disclosure, Fig.10 is along Fig. 9 Schematic diagram of the cross section taken along the center line CC'.

[0154] For example, in some embodiments of the present disclosure, in combination with reference Fig. 9 and Fig.10 The display substrate further includes a plurality of isolation columns PT. The isolation columns PT are located between adjacent pixel openings VH1. For example, the isolation columns PT can play a supporting and protective role during the display substrate processing, such as supporting the mask to prevent the mask from damaging part of the film layer in the display substrate during movement.

[0155] Exemplarily, the orthographic projection of the shielding portion PS on the base substrate is spaced apart from the orthographic projection of the isolation column PT on the base substrate, and the shielding portion PS is located between adjacent isolation columns PT and the pixel opening VH1 .

[0156] Exemplarily, the spacing distance m4 between at least part of the blocking portion PS and the adjacent isolation column PT is greater than the spacing distance between the blocking portion PS and the adjacent pixel opening VH1, for example, m4 is greater than the second spacing distance m2 between the first sub-blocking portion PS1 and the pixel opening of the first sub-pixel.

[0157] Through such a design, the influence of the isolation column on the light output of the pixel unit can be reduced, which is beneficial to improving the overall brightness of the display substrate.

[0158] In some embodiments, the plurality of shielding parts PS and the plurality of isolation pillars PT may be located in the same layer.

[0159] It should be noted that the expression "same layer" refers to a layer structure formed by using the same film-forming process to form a film layer for forming a specific pattern, and then using the same mask to pattern the film layer through a single composition process. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0160] Through such a design, the brightness difference on both sides of some sub-pixels of the display substrate can be reduced without increasing the number of masks, which is beneficial to improving color deviation, simplifying the process and reducing costs.

[0161] Fig.11 is a structural block diagram of a display device according to an embodiment of the present disclosure.

[0162] Optionally, an embodiment of the present disclosure further provides a display device, referring to Fig.11 The display device 200 may include the display substrate 100. The display device may include but is not limited to: electronic paper, mobile phones, tablet computers, monitors, laptop computers, digital photo frames, navigators, and any other products or components with display functions. It should be understood that the display device has the same beneficial effects as the display substrate provided in the above embodiments.

[0163] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined by the claims and their equivalents.

Claims

1. A display substrate, characterized in that: comprising a display area, the display area comprising a plurality of sub-pixels; The display substrate comprises: substrate substrate; A first electrode layer, the first electrode layer is located on one side of the base substrate, the first electrode layer includes a plurality of first electrodes arranged at intervals, and each of the sub-pixels includes a first electrode; A pixel definition layer, the pixel definition layer is located on a side of the first electrode layer away from the base substrate, the pixel definition layer includes a pixel definition portion, the pixel definition portion defines a plurality of pixel openings of the sub-pixels; and A plurality of shielding parts, wherein the plurality of shielding parts are located on a side of the pixel definition layer away from the base substrate, The plurality of sub-pixels include a plurality of first sub-pixels, and the first electrodes of at least some of the first sub-pixels include a first sub-electrode and a second sub-electrode located in the pixel opening and arranged opposite to each other. Wherein, in a third direction, the second sub-electrode is farther away from the surface of the base substrate than the first sub-electrode is farther away from the surface of the base substrate, and the third direction is perpendicular to the light emitting surface of the display substrate; and The plurality of shielding portions include a plurality of first sub-shielding portions, at least a portion of the first sub-shielding portions being located on a side of the first sub-electrode of the first sub-pixel away from the second sub-electrode.

2. The display substrate according to claim 1, wherein: The plurality of sub-pixels further include a plurality of second sub-pixels, and the first electrodes of at least some of the second sub-pixels include a third sub-electrode and a fourth sub-electrode located in the pixel opening and arranged opposite to each other; In the third direction, the fourth sub-electrode is away from the surface of the substrate, and is further away from the substrate than the third sub-electrode is away from the surface of the substrate; as well as The shielding portion further includes a plurality of second sub-shielding portions, at least a portion of which is located on a side of the third sub-electrode of the second sub-pixel away from the fourth sub-electrode.

3. The display substrate according to claim 1 or 2, wherein: The orthographic projection of the shielding portion on the base substrate falls within the orthographic projection of the pixel definition layer on the base substrate; as well as The orthographic projection of the shielding portion on the base substrate is arranged at an interval from the orthographic projection of the pixel opening on the base substrate.

4. The display substrate according to claim 2, wherein: The orthographic projection of the first electrode on the base substrate at least partially overlaps with the orthographic projection of the pixel defining portion on the base substrate; as well as The first electrode of the first sub-pixel comprises a fifth sub-electrode overlapping with the projection of the pixel defining portion, and the orthographic projection of the fifth sub-electrode on the base substrate at least partially overlaps with the orthographic projection of the first sub-shielding portion on the base substrate; And / or, the first electrode of the second sub-pixel includes a sixth sub-electrode overlapping with the projection of the pixel defining portion, and the orthographic projection of the sixth sub-electrode on the base substrate at least partially overlaps with the orthographic projection of the second sub-blocking portion on the base substrate.

5. The display substrate according to claim 2 or 4, wherein: The color of the light emitted by the first sub-pixel is the same as the color of the light emitted by the second sub-pixel; and / or, The orthographic projection of the first electrode of the first sub-pixel on the base substrate includes a first side edge and a second side edge that are adjacent to each other, the first side edge extends along a first direction, the second side edge extends along a second direction, the width of the second side edge is greater than the width of the first side edge, the first direction and the second direction are parallel to the light emitting surface of the display substrate, and the first direction and the second direction intersect; and / or, The orthographic projection of the first electrode of the second sub-pixel on the base substrate includes adjacent third side and fourth side, the third side extends along the first direction, the fourth side extends along the second direction, the width of the third side is greater than the width of the fourth side, the first direction and the second direction are parallel to the light emitting surface of the display substrate, and the first direction and the second direction intersect.

6. The display substrate according to any one of claims 1 to 5, wherein: The shape of the orthographic projection of the shielding portion on the base substrate includes an L-shape.

7. The display substrate according to claim 5, wherein: The first sub-shielding portion includes a first portion extending along the first direction; the first portion of the first sub-shielding portion has a first width in the first direction, the first side has a second width, and a ratio of the first width to the second width is in the range of 0.8-1.

2.

8. The display substrate according to claim 7, wherein: The pixel defining portion includes a first surface away from the base substrate, and the first surface includes a fifth side close to the pixel opening. In the second direction, the first portion of the first sub-shielding portion is spaced apart from the fifth side by a first spacing distance; the first portion of the first sub-shielding portion has a third width in the second direction, and the third width is greater than the first spacing distance.

9. The display substrate according to claim 7 or 8, wherein: In the second direction, the first portion of the first sub-shielding portion is spaced apart from the pixel opening of the first sub-pixel by a second spacing distance; The first sub-shielding portion also includes a second portion extending along the second direction, wherein the second portion is spaced apart from the pixel opening of the first sub-pixel by a third spacing distance in the first direction, and a ratio of the third spacing distance to the second spacing distance is in the range of 0.8-1.

2.

10. The display substrate according to claim 9, wherein: The second portion of the first sub-shielding portion has a fourth width in the second direction, and a ratio of the fourth width to the first width is in the range of 0.8-1.

2.

11. The display substrate according to any one of claims 5 and 7 to 11, wherein: The third side of the second sub-pixel has a fifth width, the second sub-shielding portion includes a third portion, the third portion extends along the first direction, the third portion has a sixth width in the first direction, and the fifth width is greater than the sixth width.

12. The display substrate according to claim 11, wherein: The fourth side of the second sub-pixel has a seventh width, the second sub-shielding portion includes a fourth portion, the fourth portion extends along the second direction, the fourth portion has an eighth width in the second direction, and a ratio of the seventh width to the eighth width is in the range of 0.8-1.

2.

13. The display substrate according to claim 12, wherein: The plurality of sub-pixels further include a plurality of third sub-pixels, the area of ​​the orthographic projection of the pixel openings of the third sub-pixels on the substrate is larger than the area of ​​the orthographic projection of the pixel openings of the first sub-pixels on the substrate, and at least a second portion of a portion of the first sub-shielding portion is located between the pixel openings of the adjacent first sub-pixels and the pixel openings of the third sub-pixels; and / or, The plurality of sub-pixels further include a plurality of fourth sub-pixels, the area of ​​the orthographic projection of the pixel opening of the fourth sub-pixel on the substrate is smaller than the area of ​​the orthographic projection of the pixel opening of the third sub-pixel on the substrate, and at least a first portion of the first sub-shielding portion is located between the adjacent pixel openings of the first sub-pixel and the fourth sub-pixel; and / or, At least part of the third portion of the second sub-shielding portion is located between the pixel opening of the second sub-pixel and the pixel opening of the fourth sub-pixel that are adjacent to each other; and / or, At least part of the fourth portion of the second sub-shielding portion is located between the adjacent pixel opening of the second sub-pixel and the pixel opening of the third sub-pixel.

14. The display substrate according to claim 8, wherein: The first spacing distance is in a range of 1 micrometer to 2 micrometers.

15. The display substrate according to any one of claims 1 to 14, wherein: The shielding portion has a first thickness in the third direction, and the first thickness is in a range of 2.1 micrometers to 2.7 micrometers.

16. The display substrate according to any one of claims 1 to 15, wherein: The display substrate further includes a plurality of isolation columns, wherein the isolation columns are located between adjacent pixel openings, the shielding portion is spaced apart from the orthographic projection of the isolation columns on the base substrate, and the shielding portion is located between adjacent isolation columns and the pixel openings.

17. The display substrate according to claim 16, wherein: The plurality of shielding portions and the plurality of isolation columns are located in a same layer.

18. The display substrate according to claim 2, wherein: The display substrate further includes a first conductive layer located between the first electrode layer and the base substrate, the first conductive layer includes a plurality of first conductive portions, and an orthographic projection of the first conductive portion on the base substrate at least partially overlaps with an orthographic projection of the first electrode of the first sub-pixel on the base substrate; And / or, an orthographic projection of the first conductive portion on the base substrate at least partially overlaps with an orthographic projection of the first electrode of the second sub-pixel on the base substrate.

19. A display device, characterized in that: Comprising the display substrate as described in any one of claims 1-18.

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