Display substrate and display device

Abstract

A display substrate and a display device, the display substrate comprising a display area and a first blocking dam surrounding the display area, the display area comprising an under-screen camera area, the under-screen camera area being close to a first side edge of the display area, the first blocking dam comprising a first raised portion and a first flat portion close to the first side edge of the display area, the first flat portion extending in a direction parallel to the first side edge of the display area, the first raised portion at least partially raised in a direction away from the display area, and on a plane parallel to the base of the display substrate, the cross-section of the first raised portion overlaps the orthographic projection of the under-screen camera area on the first side edge of the display area. The solution provided in this embodiment can accommodate more organic encapsulation layer materials by providing a raised portion, thereby making the under-screen camera area flatter and improving the deformation of point light sources.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to, but are not limited to, display technology, and in particular to a display substrate and a display device. Background Art

[0002] The rapid development of organic light emitting diodes (OLED) has led to an increasing demand for OLED displays. Among them, full display with camera (FDC) technology, as an emerging technology, has begun mass production, but there are still some problems that need to be solved. Summary of the invention

[0003] The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.

[0004] The embodiments of the present disclosure provide a display substrate and a display device to improve the image quality.

[0005] An embodiment of the present disclosure provides a display substrate, wherein the display substrate comprises a display area and a first blocking dam surrounding the display area, wherein the display area comprises an under-screen camera area and a non-under-screen camera area, wherein the under-screen camera area is close to a first side edge of the display area, and the first blocking dam comprises a first protruding portion and a first flat portion close to the first side edge of the display area, wherein the first flat portion extends in a direction parallel to the first side edge of the display area, and the first protruding portion at least partially protrudes in a direction away from the display area, and on a plane parallel to a base of the display substrate, an orthographic projection of a cross-section of the first protruding portion on the first side edge of the display area overlaps with an orthographic projection of the under-screen camera area on the first side edge of the display area.

[0006] In an exemplary embodiment, on a plane parallel to the base of the display substrate, the orthographic projection of the under-screen camera area on the first side of the display area is located within the orthographic projection of the cross-section of the first protrusion on the first side of the display area.

[0007] In an exemplary embodiment, the first flat portion includes a first sub-portion and a second sub-portion respectively located on both sides of the first protruding portion, the first protruding portion includes a first end and a second end, the first sub-portion is connected to the first end of the first protruding portion, and the second sub-portion is connected to the second end of the first protruding portion.

[0008] In an exemplary embodiment, the first barrier dam further includes a first barrier portion close to other sides of the display area, and the first barrier portion and the first flat portion form a closed loop surrounding the display area.

[0009] In an exemplary embodiment, on a plane parallel to the base, the shape of the cross-section of the first raised portion includes at least one of the following: an arc, an ellipse, an H-shape, a triangle without a base, a flat arc, and a double arc, wherein the flat arc includes a first arc segment, a first straight line segment, and a second arc segment connected in sequence, and the double arc includes a third arc segment and a fourth arc segment, and the fourth arc segment is located on a side of the third arc segment away from the under-screen camera area, and the orthographic projection of the third arc segment on the first side of the display area is located within the orthographic projection of the fourth arc segment on the first side of the display area.

[0010] In an exemplary embodiment, the display substrate further includes a second barrier dam surrounding the first barrier dam, and the second barrier dam extends along an extending direction parallel to a periphery of the display area.

[0011] In an exemplary embodiment, the display substrate also includes a second blocking dam surrounding the first blocking dam, the second blocking dam includes a second flat portion and a second raised portion close to a first side edge of the display area, the second flat portion extends in a direction parallel to the first side edge of the display area, and the second raised portion at least partially raises in a direction away from the display area, and on a plane parallel to the base of the display substrate, an orthographic projection of a cross-section of the second raised portion on the first side edge of the display area overlaps with an orthographic projection of the under-screen camera area on the first side edge of the display area.

[0012] In an exemplary embodiment, on a plane parallel to the base of the display substrate, an orthographic projection of a cross section of the first protrusion on a first side of the display area is located within an orthographic projection of a cross section of the second protrusion on the first side of the display area.

[0013] In an exemplary embodiment, the second blocking dam further includes a second blocking portion close to other sides of the display area, and the second blocking portion and the second flat portion form a closed loop surrounding the display area.

[0014] In an exemplary embodiment, on a plane parallel to the base, the shape of the cross-section of the second protrusion includes at least one of the following: an arc, an ellipse, a triangle without a base, and an oblate arc, wherein the oblate arc includes a first arc segment, a first straight line segment, and a second arc segment connected in sequence.

[0015] In an exemplary embodiment, the second flat portion includes a third sub-portion and a fourth sub-portion respectively located on both sides of the second protruding portion, the second protruding portion includes a first end and a second end, the third sub-portion is connected to the first end of the second protruding portion, and the fourth sub-portion is connected to the second end of the second protruding portion.

[0016] An embodiment of the present disclosure provides a display device, which includes the display substrate described in any of the above embodiments.

[0017] The disclosed embodiment includes a display substrate and a display device, wherein the display substrate includes a display area and a first blocking dam surrounding the display area, the display area includes an under-screen camera area, the under-screen camera area is close to a first side edge of the display area, the first blocking dam includes a first raised portion and a first flat portion close to the first side edge of the display area, the first flat portion extends in a direction parallel to the first side edge of the display area, the first raised portion at least partially protrudes in a direction away from the display area, and on a plane parallel to the base of the display substrate, the cross-section of the first raised portion overlaps with the orthographic projection of the under-screen camera area on the first side edge of the display area. The solution provided in this embodiment can accommodate more organic encapsulation layer materials by providing a raised portion, thereby making the under-screen camera area flatter and improving the deformation of point light sources.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation on the technical solution.

[0021] Figure 1 A schematic plan view of a display substrate provided by a technical solution;

[0022] Figure 2 A schematic diagram of the deformation of the light source in the under-screen camera area provided by a technical solution;

[0023] Figure 3 A schematic cross-sectional view of a display substrate along the X direction provided by a technical solution;

[0024] Figure 4 A schematic cross-sectional view of a display substrate along the Y direction provided by a technical solution;

[0025] Figure 5 A schematic plan view of a display substrate provided for an exemplary embodiment;

[0026] Figure 6 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0027] Figure 7 A schematic plan view of a display substrate provided for yet another exemplary embodiment;

[0028] Figure 8 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0029] Fig. 9 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0030] Fig.10 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0031] Fig.11 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0032] Fig.12 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0033] Fig.13 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0034] Fig.14 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0035] Fig.15 A schematic plan view of a display substrate provided for another exemplary embodiment;

[0036] Fig.16 A schematic plan view of a display substrate is provided according to another exemplary embodiment. DETAILED DESCRIPTION

[0037] The embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other arbitrarily.

[0038] The steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described can be performed in a sequence different from that shown here.

[0039] Unless otherwise defined, technical or scientific terms used in the present disclosure should have the common meanings understood by one of ordinary skill in the art to which the present invention belongs.

[0040] In the drawings, the size of each component, the thickness of a layer, or the area is sometimes exaggerated for the sake of clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to such dimensions, and the shapes and sizes of the components in the drawings do not reflect the true proportions. In addition, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or values ​​shown in the drawings.

[0041] The ordinal numbers such as “first”, “second” and “third” in the present disclosure are provided to avoid confusion among constituent elements and do not indicate any order, quantity or importance.

[0042] In the present disclosure, for the sake of convenience, the words and phrases indicating the orientation or positional relationship, such as "middle", "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., are used to illustrate the positional relationship of the constituent elements with reference to the drawings. This is only for the convenience of describing the present specification and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction in which each constituent element is described. Therefore, it is not limited to the words and phrases described in the disclosure and can be appropriately replaced according to the circumstances.

[0043] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate, or the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0044] In the present disclosure, "parallel" means 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" means 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°.

[0045] In the present disclosure, "film" and "layer" may be interchanged. For example, "conductive layer" may be replaced with "conductive film" in some cases. Similarly, "insulating film" may be replaced with "insulating layer" in some cases.

[0046] The "A and B are arranged in the same layer" mentioned in the present disclosure means that A and B are formed simultaneously through the same patterning process. "The orthographic projection of B is within the range of the orthographic projection of A" means that the boundary of the orthographic projection of B falls within the boundary of the orthographic projection of A, or the boundary of the orthographic projection of A overlaps with the boundary of the orthographic projection of B.

[0047] The deformation of point light sources leads to blurry photos, which is a major issue in the current Full Display with Camera (FDC). The FDC area is generally close to the edge of the active area (AA), usually in the slope area of ​​the organic encapsulation layer. This will cause light to scatter when taking photos, forming an elliptical shape, resulting in reduced photo clarity.

[0048] Figure 1 The following is a schematic diagram of a display substrate provided by a technical solution. Figure 1 As shown, on a plane parallel to the base of the display substrate, the display substrate includes a display area 20, the display area 20 includes an under-screen camera area 11 and a non-under-screen camera area 12, and the under-screen camera area 11 is located in the display area 20. The shape of the under-screen camera area 11 is not limited, and can be Figure 1 The circle shown in the figure, or it can be an ellipse or other polygons such as a square or a diamond. Area 10 is a flat area of ​​the organic encapsulation layer of the display substrate. It can be seen that the under-screen camera area 11 is located outside the flat area of ​​the organic encapsulation layer, that is, located in the climbing area of ​​the organic encapsulation layer, resulting in light scattering when taking pictures, forming an elliptical shape, resulting in a decrease in the clarity of the picture, such as Figure 2 As shown, Figure 2 A is a schematic diagram of a light source that has not undergone elliptical deformation. Figure 2 B is a schematic diagram of a light source undergoing an elliptical transformation.

[0049] Figure 3 : is a cross-sectional view of the periphery of the under-screen camera area 11 along the first direction X. Figure 3 As shown, the display substrate includes a driving structure layer 2, a light emitting structure layer 3 and a packaging structure layer 4 sequentially arranged on a substrate 1, and the packaging structure layer 4 may include a first inorganic packaging layer 401, an organic packaging layer 402 and a second inorganic packaging layer 403 sequentially arranged on the light emitting structure layer 3. It can be seen that the under-screen camera area 11 is located outside the flat area of ​​the organic packaging layer 402. The first direction X can be the extension direction (row direction) of the scanning signal line in the display area 20, and the second direction Y can be the extension direction (column direction) of the data line in the display area 20, and the X direction and the Y direction can be perpendicular to each other.

[0050] Figure 4 : is a cross-sectional view of the periphery of the under-screen camera area 11 along the second direction Y. Figure 4As shown, the display substrate includes a driving structure layer 2, a light emitting structure layer 3 and a packaging structure layer 4 sequentially arranged on a substrate 1, and the packaging structure layer 4 may include a first inorganic packaging layer 401, an organic packaging layer 402 and a second inorganic packaging layer 403 sequentially arranged on the light emitting structure layer 3. It can be seen that the under-screen camera area 11 is located outside the flat area of ​​the organic packaging layer 402.

[0051] Figure 5 FIG. 1 is a schematic plan view of a display substrate provided by an exemplary embodiment. Figure 5 As shown, the display substrate provided in this embodiment includes a display area 20, wherein the display area 20 includes an under-screen camera area 11 and a non-under-screen camera area 12, and the display substrate further includes a first blocking dam 30 surrounding the display area 20. The under-screen camera area 11 is close to the first side 21 of the display area 20, and the first blocking dam 30 includes a first protruding portion 31 and a first flat portion 32 close to the first side 21 of the display area 20, wherein the first flat portion 32 extends in a direction parallel to the first side 21 of the display area 20. The first protruding portion 31 at least partially protrudes in a direction away from the display area 20. On a plane parallel to the base of the display substrate, the orthographic projection of the cross section of the first protruding portion 31 on the first side 21 overlaps with the orthographic projection of the under-screen camera area 11 on the first side 21. The maximum distance between the cross section of the first protruding portion 31 and the under-screen camera area 11 along the second direction Y is greater than the maximum distance between the cross section of the first flat portion 32 and the under-screen camera area 11 along the second direction Y. The first protruding portion 31 at least partially protrudes in a direction away from the display area 20 . This includes: relative to the first flat portion 32 , the first protruding portion 31 at least partially protrudes in a direction away from the display area 20 .

[0052] In an exemplary embodiment, the first side edge 21 may be a side edge away from a binding area of ​​the display substrate.

[0053] The solution provided in this embodiment can expand at least part of the blocking dam around the under-screen camera area away from the under-screen camera area or provide a better blocking effect by setting a raised portion, thereby reserving more edge climbing space for the organic encapsulation layer and accommodating more organic encapsulation layer materials, thereby making the under-screen camera area flatter and improving the poor deformation of the FDC shooting point light source.

[0054] In an exemplary embodiment, the first protrusion 31 at least partially protrudes in a direction away from the display area 20, and may be entirely protruded in a direction away from the display area 20 (eg, Figures 5 to 14 ), or only partially protrudes in a direction away from the display area (as shown in Fig.15shown).

[0055] In an exemplary embodiment, on a plane parallel to the base of the display substrate, the orthographic projection of the under-screen camera area 11 on the first side 21 of the display area can be located within the orthographic projection of the cross section of the first protrusion 31 on the first side 21 of the display area. The solution provided in this embodiment is to expand the barrier dam around the under-screen camera area away from the under-screen camera area, so as to accommodate more organic encapsulation layer materials, thereby making the under-screen camera area flatter and improving the deformation of the FDC shooting point light source. Figure 5 As shown, region 10 is a flat region of the organic encapsulation layer 402. It can be seen that by providing the first protrusion 31, the under-screen camera region 11 can be located in region 10, that is, located in the flat region of the organic encapsulation layer 402, thereby improving the poor light source deformation. However, the embodiments of the present disclosure are not limited thereto, and the orthographic projection of the under-screen camera region 11 on the first side edge 21 of the display region can be partially located in the orthographic projection of the cross section of the first protrusion 31 on the first side edge 21 of the display region.

[0056] In an exemplary embodiment, the first flat portion 32 may include two sub-portions, which are respectively located on both sides of the first protruding portion 31 and connected by the first protruding portion 31, that is, the first flat portion 32 includes a first sub-portion 321 and a second sub-portion 322 respectively located on both sides of the first protruding portion 31, the first protruding portion 31 includes a first end A1 and a second end A2, the first sub-portion 321 is connected to the first end A1 of the first protruding portion 31, and the second sub-portion 322 is connected to the second end A2 of the first protruding portion 31. Figure 5 , Figure 6 , Fig. 9 , Fig.14 , Fig.15 shown.

[0057] In an exemplary embodiment, the first flat portion 32 may be a continuous structure extending from one side of the display area 20 to the other side, and forming a closed loop with the blocking portions located at other sides, that is, on a plane parallel to the base of the display substrate, the first blocking dam 30 further includes a first blocking portion 33 close to other sides of the display area, and the first blocking portion 33 and the first flat portion 32 form a closed loop surrounding the display area. Figure 7 , Figure 8 , Fig.10 , Fig.11 , Fig.12 , Fig.13 and Fig.16As shown, at this time, the two ends of the first protrusion 31 are respectively connected to different positions on the first flat portion 32. That is, at this time, the first barrier dam 30 includes a closed loop and a protrusion connected to the closed loop. In the previous embodiment, the first barrier dam 30 is a closed loop, and the first protrusion 31 is a part of the closed loop surrounding the display area 20.

[0058] In an exemplary embodiment, on a plane parallel to the substrate, the cross-section of the first protrusion 31 can be an arc, a circle, an ellipse, an H-shape, a triangle without a bottom edge, an oblate arc, a double arc, etc. The oblate arc includes a first arc segment, a first straight line segment, and a second arc segment connected in sequence, the double arc includes a third arc segment and a fourth arc segment, and the fourth arc segment is located on a side of the third arc segment away from the under-screen camera area, and the orthographic projection of the third arc segment on the first side of the display area is located within the orthographic projection of the fourth arc segment on the first side of the display area. Figure 5 As shown, the cross section of the first protrusion 31 may be in the shape of an arc. However, the embodiment of the present disclosure is not limited thereto, and the cross section of the first protrusion 31 may be in the shape of a broken line, or a curve of other shapes (non-arc), and so on.

[0059] In an exemplary embodiment, on a plane parallel to the substrate, the cross section of the first protrusion 31 may be symmetrical along a center line P1; the center line P1 is the center line of the under-screen camera area 11 and is perpendicular to the first side 21 of the display area 20. In this embodiment, the first protrusions 31 are symmetrically distributed around the under-screen camera area 11, which can make the organic encapsulation layer of the under-screen camera area 11 more uniform and avoid deformation of the light source. However, the embodiments of the present disclosure are not limited thereto, and the cross section of the first protrusion 31 may be asymmetrical.

[0060] In an exemplary embodiment, if Figure 5 As shown, the display substrate may further include a second barrier dam 40 surrounding the first barrier dam 30, and the second barrier dam 40 extends in a direction parallel to the extension direction of the periphery of the display area 20. That is, the extension direction of the second barrier dam 40 is consistent with or close to the extension direction of the periphery of the display area 20, and has no protrusion.

[0061] In the embodiment of the present disclosure, the cross-sections of the first barrier dam 30 and the second barrier dam 40 are only indicated by line segments. However, the cross-section of the first barrier dam 30 has a width along the extending direction perpendicular to the first barrier dam 30, and the cross-section of the second barrier dam 40 has a width along the extending direction perpendicular to the second barrier dam 40. In the embodiment of the present disclosure, the width is omitted, and the cross-sectional shapes of the first barrier dam 30 and the second barrier dam 40 are described without mentioning the width. The widths of the first protrusion 31 and the first flat portion 32 can be the same, or different; the widths of the second protrusion 41 and the second flat portion 42 can be the same, or different. The following is similar and will not be described again.

[0062] In an exemplary embodiment, if Figure 6 As shown, the display substrate may include a first barrier dam 30 and a second barrier dam 40 surrounding the first barrier dam 30. The first barrier dam 30 may refer to Figure 5 The embodiment shown is not described in detail. The second blocking dam 40 may include a second raised portion 41 and a second flat portion 42 near the first side of the display area 20, the second flat portion 42 extends in a direction parallel to the first side 21 of the display area 20, and the second raised portion 41 at least partially protrudes in a direction away from the display area 20. On a plane parallel to the base of the display substrate, the cross-section of the second raised portion 41 overlaps the orthographic projection of the first side 21 of the display area 20 and the orthographic projection of the under-screen camera area 11 on the first side 21 of the display area 20. Among them, the maximum distance between the cross-section of the second raised portion 41 and the under-screen camera area 11 along the second direction Y is greater than the maximum distance between the cross-section of the second flat portion 42 and the under-screen camera area 11 along the second direction Y. In this embodiment, the second blocking dam 40 is expanded outward in at least a part of the area near the under-screen camera area 11 to increase the space for accommodating more organic packaging layers, so that the under-screen camera area can be made flatter and the deformation of the FDC shooting point light source is improved. The second protruding portion 41 at least partially protrudes in a direction away from the display area 20 . This includes: relative to the second flat portion 42 , the second protruding portion 41 at least partially protrudes in a direction away from the display area 20 .

[0063] In an exemplary embodiment, on a plane parallel to the base, the cross-section of the second protrusion 41 can be an arc, a circle, an ellipse, a triangle without a bottom edge, an oblate arc, etc. Figure 6 As shown, the cross section of the second protrusion 41 may be in the shape of an arc. However, the embodiment of the present disclosure is not limited thereto, and the cross section of the second protrusion 41 may be in the shape of a broken line or other shapes of curves (non-arc), and so on.

[0064] In an exemplary embodiment, the cross section of the second protrusion 41 may be consistent with the cross section of the first protrusion 31, that is, the cross section of the first protrusion 31 and the cross section of the second protrusion 41 are both arc-shaped, or both are triangles without bottom edges, or both are ellipses, etc. However, the embodiments of the present disclosure are not limited thereto, and the cross section of the second protrusion 41 may be inconsistent with the cross section of the first protrusion 31.

[0065] In an exemplary embodiment, if Figure 6 As shown, on a plane parallel to the base, the cross section of the second protrusion 41 may be symmetrical along the center line P1. However, the embodiment of the present disclosure is not limited thereto, and the cross section of the second protrusion 41 may be asymmetrical.

[0066] In an exemplary embodiment, on a plane parallel to the base of the display substrate, the orthographic projection of the cross section of the first protrusion 31 on the first side 21 of the display area 20 may be located within the orthographic projection of the cross section of the second protrusion 41 on the first side 21 of the display area 20. That is, the outward expansion of the second blocking dam 40 is adapted to the outward expansion of the first blocking dam 30, and the outward expansion is performed at a corresponding position of the outward expansion of the first blocking dam 30, so that the flatness of the organic encapsulation layer in the under-screen camera area 11 is better. However, the embodiments of the present disclosure are not limited thereto, and the orthographic projection of the cross section of the first protrusion 31 on the first side 21 of the display area 20 may be partially located within the orthographic projection of the cross section of the second protrusion 41 on the first side 21 of the display area 20.

[0067] In an exemplary embodiment, if Figure 6 As shown, the second flat portion 42 may include two sub-portions, which are respectively located on both sides of the second raised portion 41 and connected by the second raised portion 41, that is, the second flat portion 42 includes a third sub-portion 421 and a fourth sub-portion 422 respectively located on both sides of the second raised portion 41, the second raised portion 41 includes a first end A3 and a second end A4, the third sub-portion 421 is connected to the first end A3 of the second raised portion 41, and the fourth sub-portion 422 is connected to the second end A4 of the second raised portion 41.

[0068] Figure 7 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Figure 7 As shown, the display substrate provided in this embodiment includes a display area 20, and the display area 20 includes an under-screen camera area 11 and a non-under-screen camera area 12 ( Figure 7(not shown in the figure), the display substrate further includes a first blocking dam 30 surrounding the display area 20. The under-screen camera area 11 is close to the first side 21 of the display area 20, and the first blocking dam 30 includes a first protruding portion 31 and a first flat portion 32 close to the first side 21 of the display area 20, wherein the first flat portion 32 extends in a direction parallel to the first side 21 of the display area 20. The first protruding portion 31 protrudes in a direction away from the display area 20. On a plane parallel to the substrate, the orthographic projection of the under-screen camera area 11 on the first side 21 is located within the orthographic projection of the first protruding portion 31. The first blocking dam 30 also includes a first blocking portion 33 close to other sides of the display area 20, and the first blocking portion 33 and the first flat portion 32 form a closed loop surrounding the display area 20. On a plane parallel to the substrate, the cross-section of the first protruding portion 31 may be an arc. The two ends of the first protruding portion 31 are respectively connected to different nodes of the first flat portion 32. The display substrate may further include a second barrier dam 40 extending in a direction parallel to a periphery of the display region 20 .

[0069] In subsequent embodiments, the display substrate includes a display area 20, a first blocking dam 30 surrounding the display area 20, and a second blocking dam 40 surrounding the first blocking dam 30. The display area 20 includes an under-screen camera area 11 and a non-under-screen camera area 12, which will not be explained again to simplify the description.

[0070] Figure 8 This is a schematic diagram of a display substrate provided by another exemplary embodiment. The first barrier dam 30 of the display substrate provided by this embodiment can refer to Figure 7 The description in the illustrated embodiment is not repeated here. In this embodiment, the second blocking dam 40 includes a second protruding portion 41 and a second flat portion 42. On a plane parallel to the substrate, the cross section of the second protruding portion 41 may be an arc. The second blocking dam 40 may further include a second blocking portion 43. The second flat portion 42 and the second blocking portion 43 form a closed loop surrounding the display area 20. Both ends of the second protruding portion 41 are connected to different nodes of the second flat portion 42.

[0071] Fig. 9 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Fig. 9As shown, in this embodiment, the display substrate includes a first blocking dam 30 and a second blocking dam 40, the first blocking dam 30 includes a first protruding portion 31, the second blocking dam 40 includes a second protruding portion 41, and on a plane parallel to the substrate, the cross-section of the first protruding portion 31 may be an oblate arc shape, and the oblate arc shape may include a first arc segment 311, a first straight segment 312, and a second arc segment 313 connected in sequence. The cross-section of the second protruding portion 41 may include a third arc segment 411, a second straight segment 412, and a fourth arc segment 413 connected in sequence.

[0072] In an exemplary embodiment, the orthographic projection of the under-screen camera area 11 on the first side 21 may be located within the orthographic projection of the first straight line segment 312 on the first side 21, and the orthographic projection of the under-screen camera area 11 on the first side 21 may be located within the orthographic projection of the second straight line segment 412 on the first side 21. The orthographic projection of the first protrusion 31 on the first side 21 may be located within the orthographic projection of the second protrusion 41 on the first side 21. In the solution provided in this embodiment, by providing an oblate arc-shaped protrusion, the first blocking dam 30 and the second blocking dam 30 have a larger outward expansion area, a better improvement effect, and a simpler process.

[0073] Fig.10 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Fig.10 As shown, in this embodiment, the display substrate includes a first barrier dam 30 surrounding the display area 20, and a second barrier dam 40 surrounding the first barrier dam 30. The first barrier dam 30 includes a first protruding portion 31, a first flat portion 32, and a first barrier portion 33. The first protruding portion 31 is similar to Fig. 9 The first protrusion shown, that is, the cross-section of the first protrusion 31 on a plane parallel to the substrate may be in the shape of an oblate arc. The first flat portion 32 and the first blocking portion 33 form a closed loop surrounding the display area 20. The second blocking dam 40 extends along an extension direction parallel to the periphery of the display area 20. That is, the second blocking dam 40 has no protrusion.

[0074] Fig.11 FIG. 1 is a schematic diagram of a display substrate provided in another embodiment. Fig.11 As shown, in this embodiment, the display substrate includes a first barrier dam 30 surrounding the display area 20 and a second barrier dam 40 surrounding the first barrier dam 30. The first barrier dam 30 can refer to Fig.10 The second barrier dam 40 includes a second protruding portion 41, a second flat portion 42 and a second barrier portion 43, wherein the cross-section of the second protruding portion 41 on a plane parallel to the substrate may be in the shape of an oblate arc, which may be referred to in Fig. 9 The description of the second protrusion 41 in the embodiment shown is not repeated. The second flat portion 42 and the second blocking portion 43 form a closed loop surrounding the display area 20. In this embodiment, by providing the oblate arc-shaped protrusion, the first blocking dam 30 and the second blocking dam 30 have a larger outer expansion area, a better improvement effect, and a simpler process.

[0075] Fig.12 FIG. 1 is a schematic diagram of a display substrate provided in another embodiment. Fig.12 As shown in FIG. 1 , in this embodiment, the display substrate includes a first barrier dam 30 surrounding the display area 20 and a second barrier dam 40 surrounding the first barrier dam 30. The first barrier dam 30 includes a first protruding portion 31, a first flat portion 32 and a first barrier portion 33. On a plane parallel to the substrate, the cross section of the first protruding portion 31 is a triangle without a bottom edge. The first flat portion 32 and the first barrier portion 33 form a closed loop surrounding the display area 20. The second barrier dam 40 can be referred to Fig.10 The second barrier dam in the illustrated embodiment will not be described in detail.

[0076] Fig.13 FIG. 1 is a schematic diagram of a display substrate provided in another embodiment. Fig.13 As shown, in this embodiment, the display substrate includes a first barrier dam 30 surrounding the display area 20 and a second barrier dam 40 surrounding the first barrier dam 30. The first barrier dam 30 can refer to Fig.12 The illustrated embodiment will not be described in detail. The second blocking dam 40 includes a second protruding portion 41, a second flat portion 42 and a second blocking portion 43, wherein, on a plane parallel to the substrate, the shape of the cross section of the second protruding portion 41 may be a triangle without a base. The second flat portion 42 and the second blocking portion 43 form a closed loop surrounding the display area 20. The orthographic projection of the second protruding portion 41 on the first side 21 of the display area 20 and the orthographic projection of the first protruding portion 31 on the first side 21 of the display area 20 overlap. In an exemplary embodiment, the orthographic projection of the first protruding portion 31 on the first side 21 of the display area 20 may be located within the orthographic projection of the second protruding portion 41 on the first side 21 of the display area 20.

[0077] Fig.14 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Fig.14As shown, the display substrate provided in this embodiment includes a display area 20 and a first blocking dam 30 surrounding the display area 20, wherein the first blocking dam 30 includes a first protrusion 31 close to a first side edge of the display area, and on a plane parallel to the substrate, a cross-section of the first protrusion 31 is in the shape of a double arc, and the cross-section of the double arc includes a third arc segment 314 and a fourth arc segment 315, wherein the fourth arc segment 315 is located on a side of the third arc segment 314 away from the under-screen camera area 11, and the orthographic projection of the third arc segment 314 on the first side edge 21 of the display area 20 can be located within the orthographic projection of the fourth arc segment 315 on the first side edge 21 of the display area 20.

[0078] The display substrate may also include a first flat portion 32 close to the first side edge 21, the first flat portion 32 extends in a direction parallel to the first side edge 21, the first flat portion 32 may include a first sub-portion and a second sub-portion, one end of the third arc segment 314 is connected to the second node B2 of the first sub-portion of the first flat portion 32, the other end of the third arc segment 314 is connected to the third node B3 of the second sub-portion of the first flat portion 32, one end of the fourth arc segment 315 is connected to the first node B1 of the first sub-portion of the first flat portion 32, the other end of the fourth arc segment 315 is connected to the fourth node B4 of the second sub-portion of the first flat portion 32, and the second node B2 is an end point of the first sub-portion, and the third node B3 is an end point of the second sub-portion. However, the embodiments of the present disclosure are not limited thereto, and the first flat portion 32 may be a continuous structure, similar to Fig.13 The first flat portion 32 in the embodiment of the present invention.

[0079] The display substrate may further include a second barrier dam 40 extending in a direction parallel to the periphery of the display region 20. That is, the extending direction of the second barrier dam 40 is consistent with or close to the extending direction of the periphery of the display region 20 and has no protrusions.

[0080] Fig.15 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Fig.15As shown, in this embodiment, on a plane parallel to the substrate, the cross-sections of the first raised portion 31 and the second raised portion 32 are elliptical. One node of the first raised portion 31 connects the first sub-portion 321, and another node of the first raised portion 31 connects the second sub-portion 322. One node of the second raised portion 41 connects the third sub-portion 421, and another node of the first raised portion 31 connects the fourth sub-portion 422, that is, the first sub-portion 321 and the second sub-portion 322 are connected through the first raised portion 31, and the third sub-portion 421 and the fourth sub-portion 422 are connected through the second raised portion 41. The solution provided in this embodiment provides more accommodation space for the organic encapsulation layer through the elliptical first raised portion 31 and the second raised portion 41, improves the flatness of the organic encapsulation layer in the under-screen camera area 11, and improves the poor deformation of the point light source.

[0081] Fig.16 FIG. 1 is a schematic diagram of a display substrate provided by another exemplary embodiment. Fig.16 As shown, in this embodiment, the display substrate includes a first blocking dam 30 surrounding the display area 20, and a second blocking dam 40 surrounding the first blocking dam 30. The first blocking dam 30 includes a first protrusion 31. On a plane parallel to the substrate, the cross section of the first protrusion 31 is H-shaped. The first protrusion 31 may include a fifth sub-segment 316, a sixth sub-segment 317, and a seventh sub-segment 318. The fifth sub-segment 316 connects the sixth sub-segment 317 and the seventh sub-segment 318. The sixth sub-segment 317 is connected to the first blocking dam 30 and the second blocking dam 40, and the seventh sub-segment 318 is connected to the first blocking dam 30 and the second blocking dam 40. In this embodiment, by providing the H-shaped first protrusion 31, a better blocking effect can be achieved, and more accommodation space can be provided for the organic encapsulation layer, so that the printing amount of the organic encapsulation layer can be increased in the under-screen camera area 11, and the flatness of the organic encapsulation layer in the FDC area can be increased. The first barrier dam 30 further includes a first flat portion 32 and a first barrier portion 33, and the first flat portion 32 and the first barrier portion 33 form a closed loop surrounding the display area 20. The second barrier dam 40 extends along an extension direction parallel to the periphery of the display area 20.

[0082] The first barrier dam 30 and the second barrier dam 40 described in the above embodiment are only examples, and the embodiments of the present disclosure are not limited thereto. The first barrier dam 30 and the second barrier dam 40 may be other shapes, and the first protrusion 31 and the second protrusion 41 may be other shapes.

[0083] The present disclosure also provides a display device, including the display substrate of the above embodiment. The display device can be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, etc.

[0084] Although the embodiments disclosed in the present invention are as above, the contents described are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A display substrate, characterized in that: The display substrate includes a display area and a first blocking dam surrounding the display area, the display area includes an under-screen camera area and a non-under-screen camera area, the under-screen camera area is close to a first side edge of the display area, the first blocking dam includes a first protruding portion and a first flat portion close to the first side edge of the display area, the first flat portion extends in a direction parallel to the first side edge of the display area, the first protruding portion at least partially protrudes in a direction away from the display area, and on a plane parallel to a base of the display substrate, an orthographic projection of a cross-section of the first protruding portion on the first side edge of the display area overlaps with an orthographic projection of the under-screen camera area on the first side edge of the display area.

2. The display substrate according to claim 1, characterized in that: On a plane parallel to the base of the display substrate, an orthographic projection of the under-screen camera area on the first side of the display area is located within the orthographic projection of a cross section of the first protrusion on the first side of the display area.

3. The display substrate according to claim 1, characterized in that: The first flat portion includes a first sub-portion and a second sub-portion respectively located on both sides of the first protruding portion, the first protruding portion includes a first end and a second end, the first sub-portion is connected to the first end of the first protruding portion, and the second sub-portion is connected to the second end of the first protruding portion.

4. The display substrate according to claim 1, characterized in that: The first blocking dam further includes a first blocking portion close to other sides of the display area, and the first blocking portion and the first flat portion form a closed loop surrounding the display area.

5. The display substrate according to claim 1, characterized in that: On a plane parallel to the base, the shape of the cross-section of the first protrusion includes at least one of the following: an arc, an ellipse, an H-shape, a triangle without a base, a flat arc, and a double arc, wherein the flat arc includes a first arc segment, a first straight line segment, and a second arc segment connected in sequence, and the double arc includes a third arc segment and a fourth arc segment, and the fourth arc segment is located on the side of the third arc segment away from the under-screen camera area, and the orthographic projection of the third arc segment on the first side of the display area is located within the orthographic projection of the fourth arc segment on the first side of the display area.

6. The display substrate according to any one of claims 1 to 5, characterized in that: The display substrate further includes a second barrier dam surrounding the first barrier dam, and the second barrier dam extends along an extension direction parallel to a periphery of the display area.

7. The display substrate according to any one of claims 1 to 5, characterized in that: The display substrate also includes a second blocking dam surrounding the first blocking dam, the second blocking dam includes a second flat portion and a second raised portion close to a first side edge of the display area, the second flat portion extends in a direction parallel to the first side edge of the display area, and the second raised portion at least partially raises in a direction away from the display area, and on a plane parallel to the base of the display substrate, an orthographic projection of a cross-section of the second raised portion on the first side edge of the display area overlaps with an orthographic projection of the under-screen camera area on the first side edge of the display area.

8. The display substrate according to claim 7, characterized in that: On a plane parallel to the base of the display substrate, an orthographic projection of a cross section of the first protrusion on a first side of the display region is located within an orthographic projection of a cross section of the second protrusion on the first side of the display region.

9. The display substrate according to claim 7, characterized in that: The second blocking dam further includes a second blocking portion close to other sides of the display area, and the second blocking portion and the second flat portion form a closed loop surrounding the display area.

10. The display substrate according to claim 7, characterized in that: On a plane parallel to the base, the shape of the cross section of the second protrusion includes at least one of the following: an arc, an ellipse, a triangle without a base, and an oblate arc, wherein the oblate arc includes a first arc segment, a first straight line segment, and a second arc segment connected in sequence.

11. The display substrate according to claim 7, characterized in that: The second flat portion includes a third sub-portion and a fourth sub-portion respectively located on both sides of the second protruding portion, the second protruding portion includes a first end and a second end, the third sub-portion is connected to the first end of the second protruding portion, and the fourth sub-portion is connected to the second end of the second protruding portion.

12. A display device, characterized in that: The display device comprises the display substrate according to any one of claims 1 to 11.

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