Display substrate and display device

Abstract

The utility model discloses a display substrate and a display device. The display substrate comprises a display area (100) and a frame area (200) arranged around the display area (100), the frame region (200) comprises at least one corner region (230), the at least one corner region (230) has a symmetry axis extending along the corner inner contour (230-2) towards the corner outer contour (230-1), the at least one corner region (230) comprises a flow blocking region (10), the organic encapsulation layer (108) covers at least part of the flow blocking region (10), and the organic encapsulation layer (108) covers at least part of the flow blocking region (10). The choked flow area (10) is configured to prevent the organic encapsulation layer (108) material from flowing along the corner inner contour (230-2) towards the corner outer contour (230-1), and the choked flow area (10) comprises at least one sub-choked flow area; the ability of the at least one sub-flow-blocking region to block the material flow of the organic encapsulation layer (108) is gradually enhanced in the direction close to the symmetry axis.

Description

TECHNICAL FIELD

[0001] The present application relates to, but is not limited to, the technical field of display, in particular to a display substrate and a display device. BACKGROUND

[0002] Organic light emitting diode (OLED) and quantum dot light emitting diode (QLED) are active light emitting display devices, which have the advantages of self-illumination, wide viewing angle, high contrast, low power consumption, extremely high response speed, thinness, flexibility, low cost, etc. With the continuous development of display technology, flexible display devices with OLED or QLED as light emitting devices and controlled by thin film transistors (TFT) have become the mainstream products in the current display field. CONTENT OF THE INVENTION

[0003] The display substrate provided by the embodiments of the present application comprises a display area and a frame area surrounding the display area; the display area comprises an encapsulation structure layer arranged on a substrate, and the encapsulation structure layer comprises an organic encapsulation layer; the frame area comprises at least one corner area, the at least one corner area has a corner inner contour and a corner outer contour, the at least one corner area has a symmetry axis extending along the corner inner contour towards the corner outer contour, the at least one corner area comprises a flow resistance area, at least part of the flow resistance area is covered by the organic encapsulation layer, the flow resistance area is configured to resist the flow of the organic encapsulation layer material along the corner inner contour towards the corner outer contour, and the flow resistance area comprises at least one sub-flow resistance area, and the ability of the at least one sub-flow resistance area to resist the flow of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis.

[0004] In the example embodiment, the at least one sub-flow resistance area is a strip-shaped groove structure, the extension direction of the strip-shaped groove structure is substantially the same as the extension direction of the corner inner contour, at least one of the groove depth and the groove width of the strip-shaped groove structure gradually increases along the direction close to the symmetry axis, the groove depth of the strip-shaped groove structure refers to the maximum dimension of the strip-shaped groove structure in the plane perpendicular to the display substrate, and the groove width of the strip-shaped groove structure refers to the distance between the outer contour and the inner contour of the strip-shaped groove structure.

[0005] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner profile towards the corner outer profile direction, at least part of the sub-flow blocking regions in the plurality of the sub-flow blocking regions have at least one of the slot depth and the slot width gradually decreasing or increasing along the corner inner profile towards the corner outer profile direction.

[0006] In an example embodiment, the at least one sub-flow blocking region comprises a plurality of through holes arranged in intervals, at least one of the density, the hole depth and the opening area of the through holes gradually increases along the direction close to the symmetry axis, the density of the through holes refers to the number of the through holes in a unit area of the sub-flow blocking region, the hole depth of the through holes refers to the maximum dimension of the through holes in a plane perpendicular to the display substrate, and the opening area of the through holes refers to the area of the through holes orthogonally projected on the plane of the display substrate away from the base.

[0007] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner profile towards the corner outer profile direction, at least part of the sub-flow blocking regions in the plurality of the sub-flow blocking regions have at least one of the density, the hole depth and the opening area of the through holes gradually decreasing or increasing along the corner inner profile towards the corner outer profile direction.

[0008] In an example embodiment, the at least one sub-flow blocking region comprises a plurality of flow blocking slots arranged in intervals along the extension direction of the corner inner profile, the flow blocking slot comprises a straight slot and an arcuate slot connected to at least one side of the straight slot, the straight slot extends along the corner inner profile towards the corner outer profile direction, both ends of the arcuate slot are connected to one side of the straight slot, the arcuate slots are arranged in intervals along the extension direction of the straight slot, the arcuate slot protrudes towards the display region direction, at least one of the density, the slot depth and the slot width of the straight slot gradually increases along the direction close to the symmetry axis, the density of the straight slot refers to the number of the straight slots in a unit area of the sub-flow blocking region, the slot depth of the straight slot refers to the maximum dimension of the straight slot in a plane perpendicular to the display substrate, and the slot width of the straight slot refers to the interval between the outer profile and the inner profile of the straight slot; and / or, at least one of the density, the slot depth and the slot width of the arcuate slot gradually increases along the direction close to the symmetry axis, the density of the arcuate slot refers to the number of the arcuate slots in a unit area of the sub-flow blocking region, the slot depth of the arcuate slot refers to the maximum dimension of the arcuate slot in a plane perpendicular to the display substrate, and the slot width of the arcuate slot refers to the interval between the outer profile and the inner profile of the arcuate slot.

[0009] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner contour towards the corner outer contour, at least part of the sub-flow blocking regions have at least one of the density, the groove depth and the groove width of the straight grooves gradually decreasing or increasing along the corner inner contour towards the corner outer contour; and / or, at least part of the sub-flow blocking regions have at least one of the density, the groove depth and the groove width of the arc grooves gradually decreasing or increasing along the corner inner contour towards the corner outer contour.

[0010] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner contour towards the corner outer contour, the straight grooves of at least part of the adjacent sub-flow blocking regions are connected into one body to form a straight line structure extending along the corner inner contour towards the corner outer contour.

[0011] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner contour towards the corner outer contour, the plurality of the sub-flow blocking regions are in strip shape, the extending direction of the plurality of the sub-flow blocking regions is substantially the same as the extending direction of the corner inner contour, the number of the plurality of the sub-flow blocking regions arranged along the corner inner contour towards the corner outer contour gradually increases along the direction close to the symmetry axis.

[0012] In an example embodiment, the extending length of the plurality of the sub-flow blocking regions gradually increases or decreases along the corner inner contour towards the corner outer contour, two ends of one of the adjacent sub-flow blocking regions respectively protrude from two ends of another of the adjacent sub-flow blocking regions.

[0013] In an example embodiment, the corner outer contour comprises at least a first arc segment protruding away from the display area, the corner inner contour comprises at least a second arc segment protruding away from the display area, the at least one sub-flow blocking region comprises an arc-shaped portion protruding away from the display area, the curvature of the arc-shaped portion is substantially the same as at least one of the first arc segment and the second arc segment.

[0014] In an example embodiment, the flow blocking region comprises a plurality of the sub-flow blocking regions, the plurality of the sub-flow blocking regions are arranged in sequence along the corner inner contour towards the corner outer contour, at least part of the adjacent sub-flow blocking regions are connected into one body; and / or, at least part of the adjacent sub-flow blocking regions are arranged in interval.

[0015] In an exemplary embodiment, the corner outer profile includes at least a first arc segment protruding away from the display area, the corner inner profile includes at least a second arc segment protruding away from the display area, the flow blocking region has a flow blocking outer profile, a flow blocking inner profile, and an end profile connecting the flow blocking outer profile and the flow blocking inner profile, the flow blocking outer profile includes at least a third arc segment protruding away from the display area and oppositely arranged to the first arc segment of the corner outer profile, the flow blocking inner profile includes at least a fourth arc segment protruding away from the display area and oppositely arranged to the second arc segment of the corner inner profile, and the end profile is a stepped structure extending along the corner inner profile towards the corner outer profile.

[0016] In an exemplary embodiment, the corner region includes a first partition wall and a second partition wall, the first partition wall is located on a side of the second partition wall close to the display area, and the flow blocking region is arranged between the first partition wall and the second partition wall.

[0017] The display device provided by the embodiment of the present disclosure includes the display substrate.

[0018] The display substrate provided by the embodiment of the present disclosure gradually enhances the flow blocking capability of the sub-flow blocking region along the direction close to the symmetry axis, gradually enhances the flow blocking capability of the flow blocking region along the direction close to the symmetry axis, ensures the uniformity of the flow of the organic encapsulation layer material in the corner region, avoids overflow of the organic encapsulation layer material in the corner region close to the symmetry axis, ensures the uniformity of the film thickness of the organic encapsulation layer in the corner region, and solves the problem of corner brightening of the display substrate.

[0019] The display substrate provided by the embodiment of the present disclosure gradually increases the number of the sub-flow blocking region arranged along the corner inner profile towards the corner outer profile along the direction close to the symmetry axis, gradually enhances the flow blocking capability of the flow blocking region along the direction close to the symmetry axis, gradually enhances the flow blocking capability of the flow blocking region along the direction close to the symmetry axis, ensures the uniformity of the flow of the organic encapsulation layer material in the corner region, effectively suppresses the flow blocking capability of the organic encapsulation layer material in the corner region close to the symmetry axis, avoids overflow of the organic encapsulation layer material in the corner region close to the symmetry axis, ensures the uniformity of the film thickness of the organic encapsulation layer in the corner region, and solves the problem of corner brightening of the display substrate.

[0020] The strip-shaped groove structure of the sub-flow resistance area of the display substrate can increase the climbing distance of the organic encapsulation layer material, and the climbing distance of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis. In addition, the strip-shaped groove structure can accommodate part of the organic encapsulation layer material, so that the sub-flow resistance area can effectively reduce the climbing ability of the organic encapsulation layer material in the direction close to the symmetry axis, avoid overflow of the organic encapsulation layer material in the corner area close to the symmetry axis, ensure the uniformity of the film thickness of the organic encapsulation layer in the corner area, and solve the problem of bright corner of the display substrate.

[0021] The plurality of through holes of the sub-flow resistance area of the display substrate can increase the climbing distance of the organic encapsulation layer material, and the climbing distance of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis. In addition, the plurality of through holes can accommodate part of the organic encapsulation layer material, so that the sub-flow resistance area can effectively reduce the climbing ability of the organic encapsulation layer material in the direction close to the symmetry axis, avoid overflow of the organic encapsulation layer material in the corner area close to the symmetry axis, ensure the uniformity of the film thickness of the organic encapsulation layer in the corner area, and solve the problem of bright corner of the display substrate.

[0022] The flow resistance groove of the sub-flow resistance area of the display substrate can increase the climbing distance of the organic encapsulation layer material, and the climbing distance of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis. In addition, the flow resistance groove can accommodate part of the organic encapsulation layer material, so that the sub-flow resistance area can effectively reduce the climbing ability of the organic encapsulation layer material in the direction close to the symmetry axis, avoid overflow of the organic encapsulation layer material in the corner area close to the symmetry axis, ensure the uniformity of the film thickness of the organic encapsulation layer in the corner area, and solve the problem of bright corner of the display substrate.

[0023] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. Other advantages of the present application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the description and appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide an understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, for explaining the technical scheme of the present application, and do not constitute a limitation on the technical scheme of the present application.

[0025] Figure 1 It is a schematic diagram of a related display substrate planar structure;

[0026] Figure 2 It is a schematic diagram of a related display substrate cross-sectional structure;

[0027] Figure 3 It is a schematic diagram of another related display substrate cross-sectional structure;

[0028] Figure 4 A planar structure schematic diagram of a display substrate provided by an embodiment of the present disclosure is shown in FIG. 1;

[0029] Figure 5 An enlarged view of a corner region of a display substrate provided by an embodiment of the present disclosure is shown in FIG. 2;

[0030] Figure 6 A structure schematic diagram of a flow resistance region of a display substrate provided by an embodiment of the present disclosure is shown in FIG. 3;

[0031] Figure 7a A cross-sectional structure schematic diagram of a middle region of a corner region in a display substrate provided by an embodiment of the present disclosure is shown in FIG. 4;

[0032] Figure 7b A cross-sectional structure schematic diagram of a second edge region of a corner region in a display substrate provided by an embodiment of the present disclosure is shown in FIG. 5;

[0033] Figure 7c A cross-sectional structure schematic diagram of a first edge region of a corner region in a display substrate provided by an embodiment of the present disclosure is shown in FIG. 6;

[0034] Figure 8 An enlarged view of a corner region of another display substrate provided by an embodiment of the present disclosure is shown in FIG. 7;

[0035] Figure 9a A cross-sectional structure schematic diagram of a middle region of a corner region in another display substrate provided by an embodiment of the present disclosure is shown in FIG. 8;

[0036] Figure 9b A cross-sectional structure schematic diagram of a second edge region of a corner region in another display substrate provided by an embodiment of the present disclosure is shown in FIG. 9;

[0037] Figure 10 An enlarged view of a corner region of another display substrate provided by an embodiment of the present disclosure is shown in FIG. 10;

[0038] Figure 11a A cross-sectional structure schematic diagram of a middle region of a corner region in another display substrate provided by an embodiment of the present disclosure is shown in FIG. 11;

[0039] Figure 11b A cross-sectional structure schematic diagram of a second edge region of a corner region in another display substrate provided by an embodiment of the present disclosure is shown in FIG. 12;

[0040] Figure 11c A cross-sectional structure schematic diagram of a first edge region of a corner region in another display substrate provided by an embodiment of the present disclosure is shown in FIG. 13;

[0041] Figure 12 An enlarged view of a corner region of another display substrate provided by an embodiment of the present disclosure is shown in FIG. 14;

[0042] Figure 13 FIG. 6 is a partial enlarged view of a first sub-flow blocking area, a second sub-flow blocking area, and a third sub-flow blocking area of a display substrate according to an embodiment of the present disclosure;

[0043] Figure 14a FIG. 7 is a cross-sectional structure schematic view of an arc-shaped groove of a flow blocking groove in a display substrate according to an embodiment of the present disclosure;

[0044] Figure 14b FIG. 8 is a cross-sectional structure schematic view of a straight groove of a flow blocking groove in a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0045] The present application describes a number of embodiments, but the description is exemplary rather than limiting and it will be apparent to those of ordinary skill in the art that numerous more embodiments and implementations are possible within the scope of the embodiments described in the present application. Although a number of possible combinations of features have been set forth herein, and discussed in the specific implementation, many other combinations of the disclosed features are possible. Unless specifically intended otherwise, any feature or element of any embodiment can be used in combination with any other feature or element of any other embodiment, or in replacement of any other feature or element in any other embodiment.

[0046] The present application includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements disclosed herein can also be combined with any conventional features or elements to form unique invention solutions. Any feature or element of any embodiment can also be combined with features or elements from other invention solutions to form another unique invention solution. Thus, it should be understood that any feature shown and / or discussed in the present application can be implemented alone or in any appropriate combination. Accordingly, the embodiments are not to be restricted, except as by the appended claims and their equivalents. Additionally, various modifications and changes can be made within the scope of the following claims.

[0047] Furthermore, in describing representative embodiments, the specification can have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process depends on more than one step, the method or process should not be limited to the particular sequence of steps described. Other sequences of steps can be possible, and are within the scope of the embodiments. Thus, man skilled in the art will appreciate that the specific order of the steps in the specifications can not be to limit the claims. Furthermore, the claims should not be limited to the specific order of execution of their steps, as man skilled in the art can readily appreciate that the order can be varied and still remain within the spirit and scope of the embodiments.

[0048] A display area of a related organic light-emitting diode display substrate achieves the purpose of water-oxygen isolation by forming an encapsulation structure layer on a light-emitting structure layer. The encapsulation structure layer generally includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer which are sequentially stacked, thereby forming a stacked structure of inorganic material / organic material / inorganic material. The first inorganic encapsulation layer and the second inorganic encapsulation layer are used for water-oxygen isolation, and the organic encapsulation layer is used for stress release and planarization, etc. The organic encapsulation layer can be formed by an inkjet printing (IJP) method. Since the ink has strong fluidity, the first inorganic encapsulation layer and the second inorganic encapsulation layer are needed to coat the organic encapsulation layer, otherwise ink overflow is likely to occur, resulting in failure of water-oxygen isolation of the encapsulation structure layer and affecting the encapsulation effect.

[0049] Figure 1 FIG. 1 is a schematic diagram of a planar structure of a related display substrate. As shown in FIG. 1, in a plane parallel to the display substrate, the related display substrate includes a display area 100’ and a frame area 200’ arranged around the display area 100’. Figure 1 The display area 100’ can be rectangular or rounded rectangular, and includes a plurality of sub-pixels constituting a pixel array, which are configured to display dynamic pictures or still images. The frame area 200’ can be rectangular ring or rounded rectangular ring.

[0050] Figure 2 FIG. 2 is a schematic diagram of a cross-sectional structure of a related display substrate. Wherein, Figure 2 It can be Figure 1 a cross-sectional view in the direction of A-A’ in FIG. 1. As shown in FIG. 2, Figure 2As shown, in a plane perpendicular to the plane of the display substrate, the frame area 200' includes a substrate 101', a first organic medium layer 102' disposed on the substrate 101', a second organic medium layer 103' disposed on the side of the first organic medium layer 102' away from the substrate 101', a third organic medium layer 104' disposed on the side of the second organic medium layer 103' away from the substrate 101', an isolation structure layer disposed on the side of the third organic medium layer 104' away from the substrate 101', and an organic encapsulation layer disposed on the side of the isolation structure layer away from the substrate 101'. The isolation structure layer includes a first isolation wall 105-1', a second isolation wall 105-2', and a third isolation wall 105-3' disposed on the side of the third organic medium layer 104' away from the substrate 101', and the first isolation wall 105-1', the second isolation wall 105-2', and the third isolation wall 105-3' are sequentially and spaced apart along the direction away from the display area 100'. The third organic medium layer 104' is provided with a first isolation groove 106-1', a second isolation groove 106-2', and a third isolation groove 106-3', the first isolation groove 106-1' is located between the first isolation wall 105-1' and the second isolation wall 105-2', the second isolation groove 106-2' is located between the second isolation wall 105-2' and the third isolation wall 105-3', and the third isolation groove 106-3' is located on the side of the third isolation wall 105-3' away from the display area 100'. The organic encapsulation layer includes a first inorganic encapsulation layer 107', an organic encapsulation layer 108', and a second inorganic encapsulation layer 109' sequentially and stacked along the direction away from the substrate 101', the first inorganic encapsulation layer 107' and the second inorganic encapsulation layer 109' both cover the first isolation wall 105-1', the first isolation groove 106-1', the second isolation wall 105-2', the second isolation groove 106-2', the third isolation wall 105-3', and the third isolation groove 106-3', the organic encapsulation layer 108' covers the first isolation wall 105-1', the first isolation groove 106-1', the second isolation wall 105-2', and the second isolation groove 106-2', extends to the third isolation wall 105-3', is blocked by the third isolation wall 105-3', so that the organic encapsulation layer 108' extends to the side of the third isolation wall 105-3' away from the display area, and the organic encapsulation layer 108' does not cover the third isolation groove 106-3'. The first isolation wall 105-1', the second isolation wall 105-2', and the third isolation wall 105-3' are used to hinder the flow of the organic encapsulation layer 108' to avoid overflow of the organic encapsulation layer 108' and cause failure of the water and oxygen isolation of the encapsulation structure layer, affecting the encapsulation effect. The first isolation groove 106-1', the second isolation groove 106-2', and the third isolation groove 106-3' are used to block the conductive material (such as organic light emitting layer material) extending from the display area.

[0051] However, because the first isolation wall 105-1', the second isolation wall 105-2' and the third isolation wall 105-3' are provided on the border area 200', the width of the border area 200' is relatively large, which cannot meet the requirements of the narrow border design.

[0052] Figure 3 This is a schematic cross-sectional view of another related display substrate. (The diagram shows the cross-sectional structure of the substrate.) Figure 3 It can be Figure 1 A sectional view along the A-A' direction. Figure 3 The structure of the related display substrate shown is as follows: Figure 2 The structures of the related display substrates shown are largely the same, the difference being that, for example... Figure 3 As shown, the second isolation wall and the second isolation groove are removed from the border area 200', and the isolation structure layer only includes the first isolation wall 105-1' and the third isolation wall 105-3', thereby reducing the width of the border area 200' and achieving a narrow border design.

[0053] The inventors of this application discovered that during the formation of the organic encapsulation layer 108', ink droplets are first dropped onto the substrate of the display area; then, the ink droplets are allowed to diffuse on the substrate and fuse with adjacent ink droplets to form a continuous and uniform liquid film; subsequently, the liquid film is irradiated with ultraviolet light to form the organic encapsulation layer 108'. During the ink droplet diffusion process, the fusion of ink droplets generates an impact force, propelling the liquid film towards the border area 200'. When the liquid film diffuses to the corner area of ​​the border area 200', the impact force propelling the liquid film is greater than that in other areas of the border area 200', increasing the liquid film's climbing ability in the corner area of ​​the border area 200'. This makes it easier for the liquid film to climb at the third isolation wall 105-3' in the corner area of ​​the border area 200', causing the liquid film to overflow, resulting in the failure of the water and oxygen barrier of the encapsulation structure layer and affecting the encapsulation effect.

[0054] Furthermore, because the liquid film of the organic encapsulation layer 108' slopes up at the third isolation wall 105-3', the thickness of the color filter structure layer 110' located in the display area 100' is greater than the thickness of the color filter structure layer 110' located in the bezel area 200'. This results in the display substrate having higher brightness at the corners than in other areas in a bright state, and higher light reflectivity at the corners than in other areas in a dark state, affecting the display effect of the display substrate. Increasing the horizontal distance between the first isolation wall 105-1' and the third isolation wall 105-3' to prevent the liquid film from sloping up at the third isolation wall 105-3' would increase the width of the bezel area 200', failing to meet the requirements of a narrow bezel design.

[0055] The embodiment of the present application provides a display substrate, including: a display area and a frame area arranged around the display area; the display area includes an encapsulation structure layer arranged on a substrate, the encapsulation structure layer includes an organic encapsulation layer, the frame area includes at least one corner area, the at least one corner area has a corner inner contour and a corner outer contour, the at least one corner area has a symmetry axis extending along the corner inner contour towards the corner outer contour direction, the at least one corner area includes a flow blocking area, at least part of the flow blocking area is covered by the organic encapsulation layer, the flow blocking area is configured to hinder the flow of the organic encapsulation layer material along the corner inner contour towards the corner outer contour direction, the flow blocking area includes at least one sub-flow blocking area, the ability of the at least one sub-flow blocking area to hinder the flow of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis.

[0056] Figure 4 A planar structure schematic diagram of a display substrate provided by the embodiment of the present application is provided. Figure 5 An enlarged view of a corner area of a display substrate provided by the embodiment of the present application is provided. Figure 5 The embodiment of the present application can be Figure 4 An enlarged view at a in the figure. In the exemplary embodiment, as Figure 4 And Figure 5 As shown in the figure, in the direction parallel to the plane of the display substrate, the display substrate of the embodiment of the present application includes a display area 100 and a frame area 200 arranged around the display area 100. The shape of the display area 100 can be a rounded rectangle, the four corners of the display area 100 are rounded corners, the display area 100 includes a plurality of sub-pixels constituting a pixel array, and the plurality of sub-pixels are configured to display dynamic pictures or still images. The shape of the frame area 200 can be a rounded rectangular ring shape, and the four corners of the outer contour of the frame area 200 are rounded corners. The frame area 200 can include an encapsulation area, a plurality of isolation walls and isolation grooves are arranged on the encapsulation area, and the encapsulation area is configured to block the overflow of the organic encapsulation layer material on the display area 100.

[0057] In some embodiments, the shape of the display area can be a rectangle, and the four corners of the display area are right angles. The shape of the frame area can be a rectangular ring shape, and the four corners of the outer contour of the frame area are right angles.

[0058] In the example embodiment, the frame region 200 includes a first edge region 210, a second edge region 220, and a corner region 230 connecting the first edge region 210 and the second edge region 220. The first edge region 210 is in the shape of a strip extending along a first direction X, the second edge region 220 is in the shape of a strip extending along a second direction Y, and the corner region 230 is in the shape of an arcuate strip, a first end of the corner region 230 is connected to an end of the first edge region 210, and a second end of the corner region 230 is connected to an end of the second edge region 220. The corner region 230 has a corner outer contour 230-1 and a corner inner contour 230-2, the corner outer contour 230-1 is an edge contour of a side of the corner region 230 away from the display region 100, and the corner outer contour 230-1 includes a first straight segment extending along the first direction X, a second straight segment extending along the second direction Y, and a first arcuate segment connecting the first straight segment and the second straight segment, the first arcuate segment is convex in a direction away from the display region 100. The corner inner contour 230-2 is an edge contour of a side of the corner region 230 close to the display region 100, and the corner inner contour 230-2 is a contour of a corner of the display region 100, and the corner inner contour 230-2 includes a third straight segment extending along the first direction X, a fourth straight segment extending along the second direction Y, and a second arcuate segment connecting the third straight segment and the fourth straight segment, the second arcuate segment is convex in a direction away from the display region 100. In an example, the second arcuate segment of the corner inner contour 230-2 has substantially the same curvature as the first arcuate segment of the corner outer contour 230-1. In an example, the first direction X and the second direction Y are both parallel to a plane of the display substrate, and the first direction X and the second direction Y are perpendicular to each other.

[0059] In the example embodiment, the corner region 230 is provided with a flow blocking region 10, the flow blocking region 10 is located in an encapsulation region of the corner region 230, and at least part of the flow blocking region 10 is covered by the organic encapsulation layer, the flow blocking region 10 is configured to block the flow of the organic encapsulation layer material along the corner inner contour 230-2 of the corner region 230 towards the corner outer contour 230-1 of the corner region 230, prevent the organic encapsulation layer material from climbing over a barrier on the corner region 230, and avoid overflow of the organic encapsulation layer material on the corner region 230.

[0060] In an example embodiment, the blockage region 10 has a blockage outer contour 10-1, a blockage inner contour 10-2, and an end contour 10-3 connecting the blockage outer contour 10-1 and the blockage inner contour 10-2, the blockage outer contour 10-1 is an edge contour of the blockage region 10 on a side away from the display region 100, the blockage outer contour 10-1 includes at least a third arc segment, the third arc segment is convex in a direction away from the display region 100, and the third arc segment is opposite to the first arc segment of the corner outer contour 230-1. For example, the third arc segment can have substantially the same curvature as the first arc segment of the corner outer contour 230-1. The blockage inner contour 10-2 is an edge contour of the blockage region 10 on a side close to the display region 100, the blockage inner contour 10-2 includes at least a fourth arc segment, the fourth arc segment of the blockage inner contour 10-2 is convex in a direction away from the display region 100, and the fourth arc segment is opposite to the second arc segment of the corner inner contour 230-2. For example, the fourth arc segment can have substantially the same curvature as the second arc segment of the corner inner contour 230-2. The end contour 10-3 is an edge contour of the blockage region 10 on opposite ends, the end contour 10-3 is a stepped structure extending from the corner inner contour 230-2 towards the corner outer contour 230-1.

[0061] In an example embodiment, the corner region 230 of the frame region 200 has an axis of symmetry O, the axis of symmetry O extends from the corner inner contour 230-2 towards the corner outer contour 230-1, and the axis of symmetry O equally divides the corner region 230 into two parts symmetrically arranged with respect to the axis of symmetry O.

[0062] In an example embodiment, the blockage region 10 is equally divided by the axis of symmetry O into two parts symmetrically arranged with respect to the axis of symmetry O, and the blockage ability of the blockage region 10 to hinder the flow of the organic encapsulation layer material in a direction from the corner inner contour 230-2 towards the corner outer contour 230-1 gradually increases in a direction close to the axis of symmetry O.

[0063] In the example embodiment, the corner region 230 comprises a first edge region, a second edge region, a middle region, a third edge region and a fourth edge region connected in sequence along the extending direction of the corner inner contour 230-2. The flow resistance of the flow resistance region 10 located in the middle region is greater than the flow resistance of the flow resistance region 10 located in the second edge region and the third edge region, and the flow resistance of the flow resistance region 10 located in the second edge region and the third edge region is greater than the flow resistance of the flow resistance region 10 located in the first edge region and the fourth edge region.

[0064] The embodiments of the present disclosure show that the flow resistance of the flow resistance region 10 gradually increases along the direction close to the symmetry axis O, and the flow resistance of the flow resistance region 10 gradually increases along the direction close to the symmetry axis O, which ensures the uniformity of the flow of the organic encapsulation layer material in the corner region 230, avoids the overflow of the organic encapsulation layer material in the corner region 230 close to the symmetry axis O, ensures the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region, and solves the problem of the corner brightening of the display substrate.

[0065] In the example embodiment, the flow blocking region 10 comprises a first sub-flow blocking region 11, a second sub-flow blocking region 12 and a third sub-flow blocking region 13, which are configured to block the flow of the organic encapsulating layer material along the inner corner profile 230-2 towards the outer corner profile 230-1. The first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 are all in the shape of a strip, and the extension direction of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 is substantially the same as the extension direction of the inner corner profile 230-2 of the corner region 230. The first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 are arranged in sequence along the outer corner profile 230-1 of the corner region 230 towards the inner corner profile 230-2 of the corner region 230, the outer profile of the first sub-flow blocking region 11 is the flow blocking outer profile 10-1 of the flow blocking region 10, and the inner profile of the first sub-flow blocking region 11 is connected with the outer profile of the second sub-flow blocking region 12. The outer profile of the second sub-flow blocking region 12 is connected with the inner profile of the first sub-flow blocking region 11, and the inner profile of the second sub-flow blocking region 12 is connected with the outer profile of the third sub-flow blocking region 13. The outer profile of the third sub-flow blocking region 13 is connected with the inner profile of the second sub-flow blocking region 12, and the inner profile of the third sub-flow blocking region 13 is the flow blocking inner profile 10-2 of the flow blocking region 10. The opposite ends of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 form the end profile 10-3 of the flow blocking region 10 in a stepped structure.

[0066] In some embodiments, the flow blocking region can comprise a number of sub-flow blocking regions other than three, for example, the flow blocking region can comprise one, two, four, five, six or the like number of sub-flow blocking regions, which will not be described herein.

[0067] In the example embodiment, the extension length of the first sub-flow blocking region 11 is greater than the extension length of the second sub-flow blocking region 12, and both ends of the first sub-flow blocking region 11 extend beyond both ends of the second sub-flow blocking region 12; the extension length of the second sub-flow blocking region 12 is greater than the extension length of the third sub-flow blocking region 13, and both ends of the second sub-flow blocking region 12 extend beyond both ends of the third sub-flow blocking region 13. The number of sub-flow blocking regions arranged along the inner corner profile 230-2 towards the outer corner profile 230-1 gradually increases along the direction close to the symmetry axis O, so that the flow blocking ability of the flow blocking region 10 to block the flow of the organic encapsulating layer material along the inner corner profile 230-2 towards the outer corner profile 230-1 gradually increases along the direction close to the symmetry axis O.

[0068] In the example embodiment, the middle region of the corner region 230 is provided with three sub-flow-blocking regions, i.e., the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13; the second edge region and the third edge region of the corner region 230 are provided with two sub-flow-blocking regions, i.e., the first sub-flow-blocking region 11 and the second sub-flow-blocking region 12; and the first edge region and the fourth edge region of the corner region 230 are provided with one sub-flow-blocking region, i.e., the third sub-flow-blocking region 13. The number of sub-flow-blocking regions in the middle region of the corner region 230 is greater than the number of sub-flow-blocking regions in the second edge region and the third edge region of the corner region 230, and the flow-blocking capability of the flow-blocking regions 10 in the middle region of the corner region 230 to hinder the flow of the organic encapsulation layer material along the corner inner contour 230-2 towards the corner outer contour 230-1 is greater than the flow-blocking capability of the flow-blocking regions 10 in the second edge region and the third edge region of the corner region 230 to hinder the flow of the organic encapsulation layer material along the corner inner contour 230-2 towards the corner outer contour 230-1. The number of sub-flow-blocking regions in the second edge region and the third edge region of the corner region 230 is greater than the number of sub-flow-blocking regions in the first edge region and the fourth edge region of the corner region 230, and the flow-blocking capability of the flow-blocking regions 10 in the second edge region and the third edge region of the corner region 230 to hinder the flow of the organic encapsulation layer material along the corner inner contour 230-2 towards the corner outer contour 230-1 is greater than the flow-blocking capability of the flow-blocking regions 10 in the first edge region and the fourth edge region of the corner region 230 to hinder the flow of the organic encapsulation layer material along the corner inner contour 230-2 towards the corner outer contour 230-1.

[0069] The example embodiments of the present disclosure show that the number of flow-blocking regions arranged along the corner inner contour towards the corner outer contour in the substrate gradually increases along the direction close to the symmetry axis, the flow-blocking capability of the flow-blocking regions 10 gradually increases along the direction close to the symmetry axis O, the flow-blocking capability of the flow-blocking regions 10 to reduce the climbing capability of the organic encapsulation layer material gradually increases along the direction close to the symmetry axis O, the uniformity of the flow of the organic encapsulation layer material in the corner region 230 is ensured, the climbing capability of the organic encapsulation layer material in the corner region 230 close to the symmetry axis O can be effectively inhibited, the overflow of the organic encapsulation layer material in the corner region 230 close to the symmetry axis O is avoided, the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region is ensured, and the problem of bright corner of the display substrate is solved.

[0070] In some embodiments, the extension lengths of at least part of the sub-flow-blocking regions in the flow-blocking region can be the same, which will not be described herein again.

[0071] Figure 6 A structural schematic diagram of a flow-blocking region of a display substrate is provided for the example embodiments of the present disclosure. In the structural schematic diagram, Figure 6 The flow-blocking region shown can be Figure 5The flow-blocking region is shown. In an exemplary embodiment, as... Figure 6 As shown, in a direction parallel to the plane of the display substrate, the first sub-blocking region 11 includes a first straight portion 11-1, a first arcuate portion 11-3, and a second straight portion 11-2 connected sequentially along the extension direction of the inner contour 230-2 of the corner. The first straight portion 11-1 extends along the second direction Y, and its first end is connected to the first end of the first arcuate portion 11-3. The second end of the first straight portion 11-1 extends in the opposite direction of the second direction Y. The second straight portion 11-2 extends along the first direction X, and its first end is connected to the second end of the first arcuate portion 11-3. The second end of the second straight portion 11-2 extends along the first direction X. The first arcuate portion 11-3 protrudes in a direction away from the display area 100. The first arcuate portion 11-3 is located between the outer corner contour 230-1 and the inner corner contour 230-2. The first end of the first arcuate portion 11-3 is connected to the first end of the first straight portion 11-1, and the second end of the first arcuate portion 11-3 is connected to the first end of the second straight portion 11-2. The curvature of the first arcuate portion 11-3 may be approximately the same as the curvature of at least one of the first arcuate segment of the outer corner contour 230-1 and the second arcuate segment of the inner corner contour 230-2.

[0072] In the example embodiment, the second sub-flow resistance area 12 comprises a third straight line part 12-1, a second arc-shaped part 12-3 and a fourth straight line part 12-2 connected in sequence along the extending direction of the inner corner contour 230-2. The third straight line part 12-1 extends along the second direction Y, the first end of the third straight line part 12-1 is connected with the first end of the second arc-shaped part 12-3, the second end of the third straight line part 12-1 extends in the opposite direction of the second direction Y, the outer contour of the third straight line part 12-1 is connected with the inner contour of the first straight line part 11-1 of the first sub-flow resistance area 11, and the second end of the first straight line part 11-1 extends out of the second end of the third straight line part 12-1. The fourth straight line part 12-2 extends along the first direction X, the first end of the fourth straight line part 12-2 is connected with the second end of the second arc-shaped part 12-3, the second end of the fourth straight line part 12-2 extends along the first direction X, the outer contour of the fourth straight line part 12-2 is connected with the inner contour of the second straight line part 11-2 of the first sub-flow resistance area 11, and the second end of the second straight line part 11-2 extends out of the second end of the fourth straight line part 12-2. The second arc-shaped part 12-3 protrudes in the direction away from the display area 100, the second arc-shaped part 12-3 is located between the outer corner contour 230-1 and the inner corner contour 230-2, the first end of the second arc-shaped part 12-3 is connected with the first end of the third straight line part 12-1, the second end of the second arc-shaped part 12-3 is connected with the first end of the fourth straight line part 12-2, and the outer contour of the second arc-shaped part 12-3 is connected with the inner contour of the first arc-shaped part 11-3 of the first sub-flow resistance area 11. The curvature of the second arc-shaped part 12-3 can be substantially the same as the curvature of at least one of the first arc segment of the outer corner contour 230-1 and the second arc segment of the inner corner contour 230-2.

[0073] In the example embodiment, the third sub-blocking area 13 comprises a fifth straight line part 13-1, a third arc-shaped part 13-3 and a sixth straight line part 13-2 connected in sequence along the extending direction of the corner outer contour 230-1. The fifth straight line part 13-1 extends along the second direction Y, the first end of the fifth straight line part 13-1 is connected with the first end of the third arc-shaped part 13-3, the second end of the fifth straight line part 13-1 extends in the opposite direction of the second direction Y, the outer contour of the fifth straight line part 13-1 is connected with the inner contour of the third straight line part 12-1 of the second sub-blocking area 12, and the second end of the third straight line part 12-1 is extended by the second end of the fifth straight line part 13-1. The sixth straight line part 13-2 extends along the first direction X, the first end of the sixth straight line part 13-2 is connected with the second end of the third arc-shaped part 13-3, the second end of the sixth straight line part 13-2 extends along the first direction X, the outer contour of the sixth straight line part 13-2 is connected with the inner contour of the fourth straight line part 12-2 of the second sub-blocking area 12, and the second end of the fourth straight line part 12-2 is extended by the second end of the sixth straight line part 13-2. The third arc-shaped part 13-3 protrudes in the direction away from the display area 100, the third arc-shaped part 13-3 is located between the corner outer contour 230-1 and the corner inner contour 230-2, the first end of the third arc-shaped part 13-3 is connected with the first end of the fifth straight line part 13-1, the second end of the third arc-shaped part 13-3 is connected with the first end of the sixth straight line part 13-2, and the outer contour of the third arc-shaped part 13-3 is connected with the inner contour of the second arc-shaped part 12-3 of the second sub-blocking area 12. The curvature of the third arc-shaped part 13-3 can be substantially the same as the curvature of at least one of the first arc segment of the corner outer contour 230-1 and the second arc segment of the corner inner contour 230-2.

[0074] In the example embodiment, the first sub-blocking area 11, the second sub-blocking area 12 and the third sub-blocking area 13 are all divided by the symmetry axis O into two parts symmetrically arranged about the symmetry axis O. The first arc-shaped part 11-3 of the first sub-blocking area 11 is divided by the symmetry axis O into two parts symmetrically arranged about the symmetry axis O, and the first straight line part 11-1 and the second straight line part 11-2 of the first sub-blocking area 11 are mirror-imaged relative to the symmetry axis O. The second arc-shaped part 12-3 of the second sub-blocking area 12 is divided by the symmetry axis O into two parts symmetrically arranged about the symmetry axis O, and the third straight line part 12-1 and the fourth straight line part 12-2 of the second sub-blocking area 12 are mirror-imaged relative to the symmetry axis O. The third arc-shaped part 13-3 of the third sub-blocking area 13 is divided by the symmetry axis O into two parts symmetrically arranged about the symmetry axis O, and the fifth straight line part 13-1 and the sixth straight line part 13-2 of the third sub-blocking area 13 are mirror-imaged relative to the symmetry axis O.

[0075] Figure 7a A cross-sectional structure schematic view of a middle area of a corner area in a display substrate is provided for the embodiments of the present disclosure; Figure 7b This is a schematic cross-sectional view of the second edge region of a corner area in a display substrate, provided in an embodiment of the present disclosure. Figure 7c This is a schematic cross-sectional view of the first edge region of a corner area in a display substrate, provided as an embodiment of the present disclosure. Figure 7a It can be Figure 5 A sectional view along the B1-B1' direction. Figure 7b It can be Figure 5 A sectional view along the C1-C1' direction. Figure 7c It can be Figure 5 A cross-sectional view along the D1-D1' direction. In an exemplary embodiment, such as... Figure 7a , Figure 7b and Figure 7c As shown, in a direction perpendicular to the plane of the display substrate, the sub-pixels of the display area 100 of the display substrate in this embodiment may include a driving circuit layer disposed on the substrate 101, a light-emitting structure layer disposed on the side of the driving circuit layer away from the substrate, and an encapsulation structure layer disposed on the side of the light-emitting structure layer away from the substrate. The substrate 101 may be a flexible substrate or a rigid substrate. The driving circuit layer includes at least a pixel driving circuit, which may include multiple transistors and storage capacitors. The light-emitting structure layer may include a light-emitting device, which may include an anode 21, an organic light-emitting layer 22, and a cathode. The anode 21 is connected to the pixel driving circuit, the organic light-emitting layer 22 is connected to the anode 21, and the cathode is connected to the organic light-emitting layer 22. The organic light-emitting layer 22 emits light of a corresponding color under the driving of the anode 21 and the cathode. The encapsulation structure layer may include a first inorganic encapsulation layer 107, an organic encapsulation layer 108, and a second inorganic encapsulation layer 109 stacked together. The organic encapsulation layer 108 is disposed between the first inorganic encapsulation layer 107 and the second inorganic encapsulation layer 109, forming an inorganic material / organic material / inorganic material stacked structure, which can ensure that external moisture cannot enter the light-emitting structure layer.

[0076] In the exemplary embodiments, in the direction perpendicular to the display substrate plane, the encapsulation area of the frame area 200 of the display substrate of the present disclosure can include a first organic medium layer 102 disposed on the base 101, a second organic medium layer 103 disposed on the side of the first organic medium layer 102 away from the base 101, a third organic medium layer 104 disposed on the side of the second organic medium layer 103 away from the base 101, an isolation structure layer disposed on the side of the third organic medium layer 104 away from the base 101, and a first inorganic encapsulation layer 107, an organic encapsulation layer 108, and a second inorganic encapsulation layer 109 disposed in sequence on the side of the isolation structure layer away from the base 101. The isolation structure layer includes a first isolation wall 105-1 and a second isolation wall 105-2 disposed on the side of the third organic medium layer 104 away from the base 101, and the first isolation wall 105-1 is located on the side of the second isolation wall 105-2 close to the display area 100. The first isolation wall 105-1 and the second isolation wall 105-2 are used to hinder the flow of the organic encapsulation layer 108 material, reduce the climbing ability of the organic encapsulation layer 108 material, avoid overflow of the organic encapsulation layer 108 material, and ensure the encapsulation effect.

[0077] In the exemplary embodiments, the encapsulation area of the frame area 200 is provided with a first sub-flow blocking area 11, a second sub-flow blocking area 12, a third sub-flow blocking area 13, and a plurality of first isolation grooves 106-1 between the first isolation wall 105-1 and the second isolation wall 105-2, and the plurality of first isolation grooves 106-1 are located on the side of the first sub-flow blocking area 11, the second sub-flow blocking area 12, and the third sub-flow blocking area 13 away from the display area 100. The first sub-flow blocking area 11, the second sub-flow blocking area 12, and the third sub-flow blocking area 13 are used to hinder the flow of the organic encapsulation layer 108 material, reduce the climbing ability of the organic encapsulation layer 108 material, avoid overflow of the organic encapsulation layer 108 material, and ensure the encapsulation effect. The plurality of first isolation grooves 106-1 are used to isolate the conductive material (such as the organic light-emitting layer material) extending from the display area.

[0078] In the example embodiment, the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 are all strip-shaped groove structures, the extension direction of the strip-shaped groove structure is substantially the same as the extension direction of the inner corner contour 230-2, and the cross-sectional shape of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 in the direction perpendicular to the plane of the display substrate is an inverted trapezoid. The first sub-flow blocking region 11 extends from the surface of the third organic medium layer 104 away from the substrate 101, through the third organic medium layer 104, and to the surface of the second organic medium layer 103 away from the substrate 101. The second sub-flow blocking region 12 extends from the surface of the third organic medium layer 104 away from the substrate 101, through the third organic medium layer 104 and the second organic medium layer 103 in sequence, and to the surface of the first organic medium layer 102 away from the substrate 101. The third sub-flow blocking region 13 extends from the surface of the third organic medium layer 104 away from the substrate 101, through the third organic medium layer 104, the second organic medium layer 103 and the first organic medium layer 102 in sequence, and to the surface of the substrate 101 close to the encapsulation structure layer.

[0079] The display substrate according to the embodiments of the present disclosure has the strip-shaped groove structures of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13, which can increase the climbing distance of the organic encapsulation layer 108 material and accommodate part of the organic encapsulation layer 108 material, thereby hindering the flow of the organic encapsulation layer 108 material.

[0080] In some embodiments, the groove depth of the strip-shaped groove structure of at least one of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 gradually increases along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 to hinder the flow of the organic encapsulation layer 108 material along the inner corner contour 230-2 towards the outer corner contour 230-1 gradually increases along the direction close to the symmetry axis O, thereby avoiding overflow of the organic encapsulation layer material in the corner region 230 close to the symmetry axis O, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region, and solving the problem of corner brightening of the display substrate. The groove depth of the strip-shaped groove structure refers to the maximum dimension of the strip-shaped groove structure in the plane of the display substrate.

[0081] In some embodiments, the slot width of the strip-shaped slot structure of at least one of the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 gradually increases along a direction close to the symmetry axis O, so that the flow-blocking capability of at least one of the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 to block the flow of the organic encapsulation layer 108 material along the inner corner profile 230-2 towards the outer corner profile 230-1 gradually increases along a direction close to the symmetry axis O, thereby avoiding overflow of the organic encapsulation layer material in the corner region 230 close to the symmetry axis O, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region, and solving the problem of corner lightening of the display substrate. The slot width of the strip-shaped slot structure refers to the distance between the outer profile and the inner profile of the strip-shaped slot structure. The outer profile of the strip-shaped slot structure refers to the profile of the side edge of the strip-shaped slot structure away from the display region. The inner profile of the strip-shaped slot structure refers to the profile of the side edge of the strip-shaped slot structure close to the display region.

[0082] In some embodiments, at least one of the slot depth and the slot width of the strip-shaped slot structure of the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 gradually increases along a direction from the inner corner profile 230-2 towards the outer corner profile 230-1. That is, at least one of the slot depth and the slot width of the strip-shaped slot structure of the first sub-flow-blocking region 11 is smaller than at least one of the slot depth and the slot width of the strip-shaped slot structure of the second sub-flow-blocking region 12, and at least one of the slot depth and the slot width of the strip-shaped slot structure of the second sub-flow-blocking region 12 is smaller than at least one of the slot depth and the slot width of the strip-shaped slot structure of the third sub-flow-blocking region 13.

[0083] In some embodiments, at least one of the slot depth and the slot width of the strip-shaped slot structure of the first sub-flow-blocking region, the second sub-flow-blocking region, and the third sub-flow-blocking region gradually decreases along a direction from the inner corner profile towards the outer corner profile. The disclosure will not be repeated here.

[0084] In an exemplary embodiment, the side of the first sub-flow-blocking region 11 close to the display region 100 is connected to the side of the second sub-flow-blocking region 12 away from the display region 100, and the side of the second sub-flow-blocking region 12 close to the display region 100 is connected to the side of the third sub-flow-blocking region 13 away from the display region 100, so that the bottom walls of the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 form a stepped structure extending along a direction from the inner corner profile 230-2 towards the outer corner profile 230-1.

[0085] In an exemplary embodiment, the plurality of first isolation grooves 106-1 are all in the shape of a right trapezoid in the cross section perpendicular to the plane direction of the display substrate. The plurality of first isolation grooves 106-1 are all formed by the surface of the third organic medium layer 104 away from the substrate 101, penetrating through the third organic medium layer 104, and extending to the surface of the second organic medium layer 103 away from the substrate 101.

[0086] In the example embodiment, the encapsulation region of the frame region 200 is provided with a plurality of second isolation grooves 106-2 on the side away from the first isolation wall 105-1 of the second isolation wall 105-2. The plurality of second isolation grooves 106-2 are used to isolate the conductive material (e.g. organic light emitting layer material) extending from the display region. The plurality of second isolation grooves 106-2 each have a cross-sectional shape of a right trapezoid in the direction perpendicular to the plane of the display substrate. The plurality of second isolation grooves 106-2 each extend through the third organic medium layer 104 from the surface on the side away from the base 101 of the third organic medium layer 104 to the surface on the side away from the base 101 of the second organic medium layer 103.

[0087] In the example embodiment, the first inorganic encapsulation layer 107 and the second inorganic encapsulation layer 109 each cover the first isolation wall 105-1, the first sub-flow blocking region 11, the second sub-flow blocking region 12, the third sub-flow blocking region 13, the plurality of first isolation grooves 106-1, the second isolation wall 105-2 and the plurality of second isolation grooves 106-2. The organic encapsulation layer 108 covers the first isolation wall 105-1, the first sub-flow blocking region 11, the second sub-flow blocking region 12, the third sub-flow blocking region 13 and the plurality of first isolation grooves 106-1, and extends to the second isolation wall 105-2. The organic encapsulation layer 108 is blocked by the second isolation wall 105-2, so that the organic encapsulation layer 108 does not extend to the side of the second isolation wall 105-2 away from the display region 100. The organic encapsulation layer 108 does not cover the plurality of second isolation grooves 106-2. At least part of the organic encapsulation layer 108 on the side close to the base 101 is located within the first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13. The first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 can block the flow of the material of the organic encapsulation layer 108, reduce the climbing ability of the material of the organic encapsulation layer 108, and avoid overflow of the material of the organic encapsulation layer 108, thereby ensuring the encapsulation effect.

[0088] Figure 8 Another enlarged view of the corner region of the display substrate is provided for the example embodiment of the present disclosure. The structure of the corner region of the display substrate of the present example embodiment is basically the same as that of the example embodiment shown in Figure 5 The structure of the corner region of the display substrate of the present example embodiment is basically the same as that of the example embodiment shown in Figure 8 As shown in the example embodiment, in the direction parallel to the plane of the display substrate, the corner region 230 is provided with a flow blocking region 10, which includes a first sub-flow blocking region 11, a second sub-flow blocking region 12 and a third sub-flow blocking region 13. The first sub-flow blocking region 11, the second sub-flow blocking region 12 and the third sub-flow blocking region 13 are sequentially and spacedly arranged along the outer contour of the corner region 230 towards the inner contour of the corner region 230. A first spacing region is provided between the first sub-flow blocking region 11 and the second sub-flow blocking region 12, and a second spacing region is provided between the second sub-flow blocking region 12 and the third sub-flow blocking region 13.

[0089] Figure 9a Another schematic view of a cross-sectional structure of a middle region of a corner region of a display substrate is provided in embodiments of the present disclosure. In this embodiment, Figure 9a may be Figure 8 A cross-sectional view in the direction of B2-B2'. The cross-sectional structure of the corner region of the display substrate in this exemplary embodiment is substantially the same as that shown in Figure 7a The cross-sectional structure of the corner region of the display substrate in the embodiment shown in FIG. 6 is substantially the same as that shown in FIG. 5, except that, as shown in Figure 9a in the direction perpendicular to the plane of the display substrate, a first spacing region 31 is provided between the side of the first sub-flow blocking region 11 close to the display region 100 and the side of the second sub-flow blocking region 12 away from the display region 100, and the first spacing region 31 comprises a first organic medium layer 102, a second organic medium layer 103 and a third organic medium layer 104 which are stacked.

[0090] Figure 9b Another schematic view of a cross-sectional structure of a second edge region of a corner region of a display substrate is provided in embodiments of the present disclosure. In this embodiment, Figure 9b may be Figure 8 A cross-sectional view in the direction of C2-C2'. The cross-sectional structure of the corner region of the display substrate in this exemplary embodiment is substantially the same as that shown in Figure 7b The cross-sectional structure of the corner region of the display substrate in the embodiment shown in FIG. 10 is substantially the same as that shown in FIG. 9, except that, as shown in Figure 9b in the direction perpendicular to the plane of the display substrate, a first spacing region 31 is provided between the side of the first sub-flow blocking region 11 close to the display region 100 and the side of the second sub-flow blocking region 12 away from the display region 100, and the first spacing region 31 comprises a first organic medium layer 102, a second organic medium layer 103 and a third organic medium layer 104 which are stacked.

[0091] The strip-shaped groove structure of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 of the display substrate according to the embodiments of the present disclosure can increase the climbing distance of the organic encapsulation layer 108 material, and the climbing distance of the organic encapsulation layer 108 material gradually increases along the direction close to the symmetry axis O. In addition, the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 can accommodate part of the organic encapsulation layer 108 material, so that the flow resistance area 10 can effectively reduce the climbing ability of the organic encapsulation layer 108 material in the direction close to the symmetry axis O, avoid overflow of the organic encapsulation layer material in the area close to the symmetry axis O in the corner area 230, ensure the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solve the problem of bright corner of the display substrate.

[0092] Figure 10 Another enlarged view of the corner area of the display substrate is provided for the embodiments of the present disclosure. The structure of the corner area of the display substrate according to the present exemplary embodiment is basically the same as that shown in the embodiment of the present disclosure. Figure 8 The structure of the corner area of the display substrate according to the present exemplary embodiment is basically the same as that shown in the embodiment of the present disclosure. Figure 10 As shown in the embodiment of the present disclosure, the flow resistance area 10 is arranged on the corner area 230 in the direction parallel to the plane of the display substrate, and the flow resistance area 10 includes the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13. The first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are arranged in sequence along the direction from the outer contour of the corner area 230 to the inner contour of the corner area 230. The first sub-flow resistance area 11 and the second sub-flow resistance area 12 are arranged with a first spacing area therebetween, and the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are arranged with a second spacing area therebetween. The first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 each include a plurality of through holes 40, and the plurality of through holes 40 are configured to hinder the flow of the organic encapsulation layer material along the direction from the inner contour 230-2 to the outer contour 230-1 of the corner area.

[0093] In the exemplary embodiment, the density of the through holes 40 of at least one of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 gradually increases along the direction close to the symmetry axis O, so that the flow resistance of at least one of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 to hinder the flow of the organic encapsulation layer 108 material along the direction from the inner contour 230-2 to the outer contour 230-1 of the corner area gradually increases along the direction close to the symmetry axis O, avoiding overflow of the organic encapsulation layer material in the area close to the symmetry axis O in the corner area 230, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solving the problem of bright corner of the display substrate. The density of the through holes 40 refers to the number of the through holes 40 per unit area of the sub-flow resistance area.

[0094] In the example embodiment, the shape of the through hole 40 of the first sub-flow blocking area 11 in the orthographic projection of the display substrate plane is circular, and the opening areas of the plurality of through holes 40 in the first sub-flow blocking area 11 are substantially the same. The shape of the plurality of through holes 40 in the second sub-flow blocking area 12 in the orthographic projection of the display substrate plane is circular, and the opening areas of the plurality of through holes 40 in the second sub-flow blocking area 12 are substantially the same. The shape of the plurality of through holes 40 of the third sub-flow blocking area 13 in the orthographic projection of the display substrate plane is circular, and the opening areas of the plurality of through holes 40 in the third sub-flow blocking area 13 are substantially the same. The opening areas of the through holes 40 of the first sub-flow blocking area 11, the second sub-flow blocking area 12, and the third sub-flow blocking area 13 are substantially the same. The opening area of the through hole 40 refers to the area of the orthographic projection of the through hole 40 on the plane where the display substrate is located away from the base side.

[0095] In some embodiments, the opening areas of the through holes of at least one of the first sub-flow blocking area, the second sub-flow blocking area, and the third sub-flow blocking area gradually increase along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking area, the second sub-flow blocking area, and the third sub-flow blocking area to hinder the organic encapsulation layer material flowing along the inner corner contour towards the outer corner contour gradually increases along the direction close to the symmetry axis O, avoids overflow of the organic encapsulation layer material in the corner area close to the symmetry axis O, ensures the uniformity of the film thickness of the organic encapsulation layer in the corner area, and solves the problem of bright corner of the display substrate.

[0096] In the example embodiment, the hole depths of the plurality of through holes 40 in the first sub-flow blocking area 11 are substantially the same, the hole depths of the plurality of through holes 40 in the second sub-flow blocking area 12 are substantially the same, and the hole depths of the plurality of through holes 40 in the third sub-flow blocking area 13 are substantially the same. The hole depths of the through holes 40 of the first sub-flow blocking area 11, the second sub-flow blocking area 12, and the third sub-flow blocking area 13 are substantially the same. The hole depth of the through hole 40 refers to the maximum dimension of the through hole 40 perpendicular to the plane where the display substrate is located.

[0097] In some embodiments, the hole depths of the through holes of at least one of the first sub-flow blocking area, the second sub-flow blocking area, and the third sub-flow blocking area gradually increase along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking area, the second sub-flow blocking area, and the third sub-flow blocking area to hinder the organic encapsulation layer material flowing along the inner corner contour towards the outer corner contour gradually increases along the direction close to the symmetry axis O, avoids overflow of the organic encapsulation layer material in the corner area close to the symmetry axis O, ensures the uniformity of the film thickness of the organic encapsulation layer in the corner area, and solves the problem of bright corner of the display substrate.

[0098] In the example embodiment, at least one of the density, the hole depth, and the opening area of the through holes 40 of the first sub-flow blocking region 11, the second sub-flow blocking region 12, and the third sub-flow blocking region 13 gradually decreases in the direction from the corner inner contour 230-2 to the corner outer contour 230-1. That is, at least one of the density, the hole depth, and the opening area of the through holes 40 of the first sub-flow blocking region 11 is less than at least one of the density, the hole depth, and the opening area of the through holes 40 of the second sub-flow blocking region 12, and at least one of the density, the hole depth, and the opening area of the through holes 40 of the second sub-flow blocking region 12 is less than at least one of the density, the hole depth, and the opening area of the through holes 40 of the third sub-flow blocking region 13.

[0099] In some embodiments, at least one of the density, the hole depth, and the opening area of the through holes of the first sub-flow blocking region, the second sub-flow blocking region, and the third sub-flow blocking region gradually increases in the direction from the corner inner contour to the corner outer contour. The disclosure does not repeat here.

[0100] Figure 11a Another schematic diagram of the cross-sectional structure of the middle area of the corner region in the display substrate provided by the embodiment of the disclosure is provided. Figure 11b Another schematic diagram of the cross-sectional structure of the second edge area of the corner region in the display substrate provided by the embodiment of the disclosure is provided.

[0101] Figure 11c Another schematic diagram of the cross-sectional structure of the first edge area of the corner region in the display substrate provided by the embodiment of the disclosure is provided.

[0102] Wherein, Figure 11a may be Figure 10 a cross-sectional view in the direction of B3-B3', Figure 11b may be Figure 10 a cross-sectional view in the direction of C3-C3', Figure 11c may be Figure 10 a cross-sectional view in the direction of D3-D3'. As Figure 11a , Figure 11b and Figure 11c shown, in the direction perpendicular to the plane of the display substrate, the through holes 40 in the first sub-flow blocking region 11, the second sub-flow blocking region 12, and the third sub-flow blocking region 13 are all in the shape of an inverted trapezoid in the cross section perpendicular to the plane of the display substrate, and the through holes 40 in the first sub-flow blocking region 11, the second sub-flow blocking region 12, and the third sub-flow blocking region 13 all extend from the surface of the third organic medium layer 104 away from the substrate 101, through the third organic medium layer 104, the second organic medium layer 103, and the first organic medium layer 102 in turn, and to the surface of the substrate 101 close to the encapsulation structure layer. The hole depths of the through holes 40 in the first sub-flow blocking region 11, the second sub-flow blocking region 12, and the third sub-flow blocking region 13 are substantially the same.

[0103] The embodiment of the present disclosure shows that the plurality of through holes 40 of the substrate passing through the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 can increase the climbing distance of the organic packaging layer 108 material, so that the climbing distance of the organic packaging layer 108 material gradually increases along the direction close to the symmetry axis O; and the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 can accommodate part of the organic packaging layer 108 material, so that the flow resistance area 10 can effectively reduce the climbing ability of the organic packaging layer 108 material in the direction close to the symmetry axis O, avoid the overflow of the organic packaging layer material in the area close to the symmetry axis O in the corner area 230, ensure the uniformity of the film thickness of the organic packaging layer 108 in the corner area, and solve the problem of bright corner of the display substrate.

[0104] Figure 12 Another enlarged view of the corner area of the display substrate provided by the embodiment of the present disclosure is provided. Wherein, Figure 12 may be Figure 4 the enlarged view at a in the embodiment. The structure of the corner area of the display substrate in the exemplary embodiment is basically the same as that of the Figure 5 embodiment shown, except that, as shown in Figure 12 in the direction parallel to the plane of the display substrate, the corner area 230 is provided with a flow resistance area 10, the flow resistance area 10 includes a first sub-flow resistance area 11, a second sub-flow resistance area 12 and a third sub-flow resistance area 13, the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are arranged in turn along the corner outer contour of the corner area 230 towards the corner inner contour direction of the corner area 230, the inner contour of the first sub-flow resistance area 11 is connected with the outer contour of the second sub-flow resistance area 12, and the inner contour of the second sub-flow resistance area 12 is connected with the outer contour of the third sub-flow resistance area 13. The first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 each include a plurality of flow resistance grooves arranged at intervals along the extension direction of the corner inner contour 230-2, and the plurality of flow resistance grooves are configured to hinder the flow of the organic packaging layer material along the corner inner contour 230-2 towards the corner outer contour 230-1 direction.

[0105] Figure 13 Another partial enlarged view of the first sub-flow resistance area, the second sub-flow resistance area and the third sub-flow resistance area of the display substrate provided by the embodiment of the present disclosure is provided. Wherein, Figure 13 may be Figure 12 the enlarged view at b in the embodiment. In the exemplary embodiment, as shown in Figure 13As shown, in the direction parallel to the display substrate plane, the flow resistance groove comprises a straight groove 51 and an arc-shaped groove 52 connected to the side of the straight groove 51. The straight groove 51 extends along the direction from the inner corner contour 230-2 to the outer corner contour 230-1, and the opposite sides of the straight groove 51 are connected to a plurality of arc-shaped grooves 52. The arc-shaped grooves 52 on the same side of the straight groove 51 are arranged in the extending direction of the straight groove 51. The arc-shaped grooves 52 protrude towards the display area direction, and the two ends of the arc-shaped grooves 52 are connected to different positions on the same side of the straight groove 51, forming an arc-shaped channel connected to the straight groove 51. The arc-shaped channel utilizes the principle of Tesla valve to provide resistance to the organic encapsulation layer material, reducing the flow ability of the organic encapsulation layer material along the direction from the inner corner contour to the outer corner contour.

[0106] In the exemplary embodiments, in the region where the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are adjacent in the flow resistance area 10, the straight grooves 51 of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are connected to form a first linear structure extending along the direction from the inner corner contour to the outer corner contour, and the arc-shaped grooves 52 of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 are arranged in the extending direction of the first linear structure. In the region where the first sub-flow resistance area 11 and the second sub-flow resistance area 12 are adjacent in the flow resistance area 10, the straight grooves 51 of the first sub-flow resistance area 11 and the second sub-flow resistance area 12 are connected to form a second linear structure extending along the direction from the inner corner contour to the outer corner contour, and the arc-shaped grooves 52 of the first sub-flow resistance area 11 and the second sub-flow resistance area 12 are arranged in the extending direction of the second linear structure.

[0107] In the exemplary embodiments, the density of the straight grooves 51 of at least one of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 gradually increases along the direction close to the symmetry axis O, so that the flow resistance of at least one of the first sub-flow resistance area 11, the second sub-flow resistance area 12 and the third sub-flow resistance area 13 to the organic encapsulation layer 108 material flowing along the direction from the inner corner contour 230-2 to the outer corner contour 230-1 gradually increases along the direction close to the symmetry axis O, avoiding overflow of the organic encapsulation layer material in the corner area 230 close to the symmetry axis O, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solving the problem of bright corner of the display substrate. The density of the straight grooves 51 refers to the number of the straight grooves 51 per unit area in the sub-flow resistance area.

[0108] In the example embodiment, the groove depth of the straight groove 51 of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 gradually increases along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 to block the flow of the organic encapsulation layer 108 material along the direction from the corner inner contour 230-2 to the corner outer contour 230-1 gradually increases along the direction close to the symmetry axis O, so as to avoid the overflow of the organic encapsulation layer material in the area close to the symmetry axis O in the corner area 230, ensure the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solve the problem of corner brightening of the display substrate. The groove depth of the straight groove 51 refers to the maximum dimension of the straight groove 51 in the plane perpendicular to the display substrate.

[0109] In the example embodiment, the groove width of the straight groove 51 of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 gradually increases along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 to block the flow of the organic encapsulation layer 108 material along the direction from the corner inner contour 230-2 to the corner outer contour 230-1 gradually increases along the direction close to the symmetry axis O, so as to avoid the overflow of the organic encapsulation layer material in the area close to the symmetry axis O in the corner area 230, ensure the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solve the problem of corner brightening of the display substrate. The groove width of the straight groove 51 refers to the distance between the outer contour and the inner contour of the straight groove 51.

[0110] In some embodiments, at least one of the density, groove depth and groove width of the straight groove of the first sub-flow blocking area, the second sub-flow blocking area and the third sub-flow blocking area gradually decreases or increases along the direction from the corner inner contour to the corner outer contour.

[0111] In the example embodiment, the density of the arc-shaped groove 52 of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 gradually increases along the direction close to the symmetry axis O, so that the flow blocking ability of at least one of the first sub-flow blocking area 11, the second sub-flow blocking area 12 and the third sub-flow blocking area 13 to block the flow of the organic encapsulation layer 108 material along the direction from the corner inner contour 230-2 to the corner outer contour 230-1 gradually increases along the direction close to the symmetry axis O, so as to avoid the overflow of the organic encapsulation layer material in the area close to the symmetry axis O in the corner area 230, ensure the uniformity of the film thickness of the organic encapsulation layer 108 in the corner area, and solve the problem of corner brightening of the display substrate. The density of the arc-shaped groove 52 refers to the number of the arc-shaped groove 52 in the unit area of the sub-flow blocking area.

[0112] In an exemplary embodiment, the depth of the arc-shaped groove 52 in at least one of the first sub-blocking region 11, the second sub-blocking region 12, and the third sub-blocking region 13 gradually increases along the direction close to the axis of symmetry O. This causes the flow-blocking capability of at least one of the first sub-blocking region 11, the second sub-blocking region 12, and the third sub-blocking region 13 to impede the flow of the organic encapsulation layer 108 material along the inner corner contour 230-2 toward the outer corner contour 230-1 to gradually increase along the direction close to the axis of symmetry O. This prevents the organic encapsulation layer material from overflowing in the corner region 230 near the axis of symmetry O, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region and solving the problem of corner brightness on the display substrate. The depth of the arc-shaped groove 52 refers to the maximum dimension of the arc-shaped groove 52 on the plane perpendicular to the display substrate.

[0113] In an exemplary embodiment, the width of the arc-shaped groove 52 in at least one of the first sub-blocking region 11, the second sub-blocking region 12, and the third sub-blocking region 13 gradually increases along the direction close to the axis of symmetry O. This causes the flow-blocking capability of at least one of the first sub-blocking region 11, the second sub-blocking region 12, and the third sub-blocking region 13 to impede the flow of the organic encapsulation layer 108 material along the inner contour 230-2 of the corner towards the outer contour 230-1 of the corner to gradually increase along the direction close to the axis of symmetry O. This prevents the organic encapsulation layer material from overflowing in the corner region 230 near the axis of symmetry O, ensuring the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region and solving the problem of corner brightness on the display substrate. The width of the arc-shaped groove 52 refers to the distance between the outer and inner contours of the arc-shaped groove 52.

[0114] In some embodiments, at least one of the density, depth, and width of the arcuate grooves in the first sub-obstruction region, the second sub-obstruction region, and the third sub-obstruction region gradually decreases or increases along the inner contour of the corner towards the outer contour of the corner.

[0115] Figure 14a This is a schematic cross-sectional view of an arc-shaped groove in a flow-blocking channel of a display substrate provided in an embodiment of this disclosure. Figure 14a It can be Figure 13 A cross-sectional view at point E-E'. In an exemplary embodiment, such as Figure 14a As shown, in the direction perpendicular to the plane of the display substrate, the arc groove 52 has an inverted trapezoidal cross-section in the direction perpendicular to the plane of the display substrate. The arc groove 52 extends from the surface of the third organic dielectric layer 104 away from the substrate 101, through the third organic dielectric layer 104, the second organic dielectric layer 103 and the first organic dielectric layer 102 in sequence, to the surface of the substrate 101 near the encapsulation structure layer.

[0116] Figure 14bThis is a schematic cross-sectional view of a straight groove in a flow-blocking channel of a display substrate provided in an embodiment of this disclosure. Figure 14b It can be Figure 13 A cross-sectional view at point F-F'. In an exemplary embodiment, such as Figure 14b As shown, in the direction perpendicular to the display substrate plane, the straight groove 51 has an inverted trapezoidal cross-section. The straight groove 51 extends from the surface of the third organic dielectric layer 104 away from the substrate 101, sequentially penetrating the third organic dielectric layer 104, the second organic dielectric layer 103, and the first organic dielectric layer 102, to the surface of the substrate 101 near the encapsulation structure layer. The groove depth of the straight groove 51 is approximately the same as the groove depth of the arc-shaped groove 52.

[0117] This embodiment of the display substrate shows that the flow-blocking grooves of the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 can increase the ramp distance of the organic encapsulation layer 108 material, so that the ramp distance of the organic encapsulation layer 108 material gradually increases along the direction close to the axis of symmetry O; and the first sub-flow-blocking region 11, the second sub-flow-blocking region 12, and the third sub-flow-blocking region 13 can accommodate part of the organic encapsulation layer 108 material, so that the flow-blocking region 10 can effectively reduce the ramp ability of the organic encapsulation layer 108 material in the direction close to the axis of symmetry O, avoid the overflow of the organic encapsulation layer material in the corner region 230 near the axis of symmetry O, ensure the uniformity of the film thickness of the organic encapsulation layer 108 in the corner region, and solve the problem of corner brightness of the display substrate.

[0118] This disclosure also provides a display device, which includes the aforementioned display substrate. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator, and the embodiments of the present invention are not limited thereto.

[0119] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0120] In addition, the terms "first", "second", and the like, are used only for descriptive purposes, and do not necessarily connote an order of importance, or a specific characteristic, property, or relation between or among the elements being described. Thus, the features defined by the terms "first", "second", and the like, can be embodied in any suitable form, either implicitly or explicitly, without departing from the scope of the application.

[0121] In the description of the application, the meaning of "a plurality of" is at least two, such as two, three, and the like, unless explicitly specified and limited otherwise.

[0122] In the application, unless explicitly specified and limited otherwise, the terms "mounting", "connection", "connecting", "fixed", and the like, should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be internal communication of two elements, or interaction relationship between two elements, unless explicitly specified otherwise. The specific meaning of the above terms in the application can be understood according to the specific circumstances by those skilled in the art.

[0123] In the application, unless explicitly specified and limited otherwise, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0124] In the description of the application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the description of the application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the description and the features of different embodiments or examples, without contradiction.

[0125] Although the embodiments of the application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A display substrate, characterized by, The application relates to a display area and a frame area surrounding the display area; the display area comprises an encapsulation structure layer arranged on a substrate, and the encapsulation structure layer comprises an organic encapsulation layer; the frame area comprises at least one corner area, the corner area has a corner inner contour and a corner outer contour, the corner area has an axis of symmetry extending along the corner inner contour towards the corner outer contour, the corner area comprises a flow resistance area, the flow resistance area is covered by at least part of the organic encapsulation layer, the flow resistance area is configured to resist the flow of the organic encapsulation layer material along the corner inner contour towards the corner outer contour, and the flow resistance area comprises at least one sub-flow resistance area, the ability of the at least one sub-flow resistance area to resist the flow of the organic encapsulation layer material gradually increases along a direction close to the axis of symmetry. The at least one sub-flow resistance area is a strip-shaped groove structure, the extension direction of the strip-shaped groove structure is substantially the same as the extension direction of the corner inner contour, at least one of the groove depth and the groove width of the strip-shaped groove structure gradually increases along a direction close to the axis of symmetry, the groove depth of the strip-shaped groove structure refers to the maximum dimension of the strip-shaped groove structure in a direction perpendicular to the plane of the display substrate, and the groove width of the strip-shaped groove structure refers to the spacing between the outer contour and the inner contour of the strip-shaped groove structure.

2. The display substrate of claim 1, wherein, The flow resistance area comprises a plurality of sub-flow resistance areas, the plurality of sub-flow resistance areas are arranged in sequence along the corner inner contour towards the corner outer contour, and at least one of the groove depth and the groove width of at least part of the plurality of sub-flow resistance areas gradually decreases or increases along the corner inner contour towards the corner outer contour. 3.The display substrate of claim 2, wherein, The at least one sub-flow resistance area comprises a plurality of through holes arranged at intervals, at least one of the density, the hole depth and the opening area of the through holes gradually increases along a direction close to the axis of symmetry, the density of the through holes refers to the number of the through holes in a unit area of the sub-flow resistance area, the hole depth of the through holes refers to the maximum dimension of the through holes in a direction perpendicular to the plane of the display substrate, and the opening area of the through holes refers to the area of the through holes in the display substrate plane on the side away from the substrate.

4. The display substrate of claim 1, wherein, The flow resistance area comprises a plurality of sub-flow resistance areas, the plurality of sub-flow resistance areas are arranged in sequence along the corner inner contour towards the corner outer contour, and at least one of the density, the hole depth and the opening area of the through holes of at least part of the plurality of sub-flow resistance areas gradually decreases or increases along the corner inner contour towards the corner outer contour.

5. The display substrate of claim 4, wherein, ​ 6.The display substrate of claim 1, wherein, The at least one sub-flow blocking area comprises a plurality of flow blocking grooves arranged at intervals along the extension direction of the inner corner contour, the flow blocking grooves comprise straight grooves and arc grooves connected to at least one side of the straight grooves, the straight grooves extend along the inner corner contour towards the outer corner contour, the two ends of the arc grooves are connected to one side of the straight grooves, the arc grooves are arranged at intervals along the extension direction of the straight grooves, the arc grooves protrude towards the display area, at least one of the density, groove depth and groove width of the straight grooves gradually increases along the direction close to the symmetry axis, the density of the straight grooves refers to the number of the straight grooves per unit area in the sub-flow blocking area, the groove depth of the straight grooves refers to the maximum dimension of the straight grooves in the plane perpendicular to the display substrate, and the groove width of the straight grooves refers to the spacing between the outer contour and the inner contour of the straight grooves; and / or at least one of the density, groove depth and groove width of the arc grooves gradually increases along the direction close to the symmetry axis, the density of the arc grooves refers to the number of the arc grooves per unit area in the sub-flow blocking area, the groove depth of the arc grooves refers to the maximum dimension of the arc grooves in the plane perpendicular to the display substrate, and the groove width of the arc grooves refers to the spacing between the outer contour and the inner contour of the arc grooves. 7.The display substrate of claim 6, wherein, The flow blocking area comprises a plurality of sub-flow blocking areas, the plurality of sub-flow blocking areas are arranged in sequence along the inner corner contour towards the outer corner contour, and at least part of the sub-flow blocking areas gradually decrease or increase at least one of the density, groove depth and groove width of the straight grooves along the inner corner contour towards the outer corner contour; and / or at least part of the sub-flow blocking areas gradually decrease or increase at least one of the density, groove depth and groove width of the arc grooves along the inner corner contour towards the outer corner contour. 8.The display substrate of claim 6, wherein, The flow blocking area comprises a plurality of sub-flow blocking areas, the plurality of sub-flow blocking areas are arranged in sequence along the inner corner contour towards the outer corner contour, and the straight grooves of at least part of the adjacent sub-flow blocking areas are connected into one body to form a straight line structure extending along the inner corner contour towards the outer corner contour. 9.The display substrate of any one of claims 1 to 8, wherein, The flow blocking area comprises a plurality of sub-flow blocking areas, the plurality of sub-flow blocking areas are arranged in sequence along the inner corner contour towards the outer corner contour, the plurality of sub-flow blocking areas are in strip shape, the extension direction of the plurality of sub-flow blocking areas is substantially the same as the extension direction of the inner corner contour, and the number of the plurality of sub-flow blocking areas arranged along the inner corner contour towards the outer corner contour gradually increases along the direction close to the symmetry axis. 10.The display substrate of claim 9, wherein, The extension length of the plurality of sub-flow blocking areas gradually increases or decreases along the inner corner contour towards the outer corner contour, and the two ends of one of the adjacent sub-flow blocking areas are respectively protruded from the two ends of the other of the adjacent sub-flow blocking areas. 11.The display substrate according to any one of claims 1 to 8, characterized in that, The outer corner profile comprises at least a first arc segment protruding away from the display area, the inner corner profile comprises at least a second arc segment protruding away from the display area, and the at least one sub-flow-blocking area comprises an arc-shaped portion protruding away from the display area, and the curvature of the arc-shaped portion is substantially the same as at least one of the first arc segment and the second arc segment. 12.The display substrate according to any one of claims 1 to 8, characterized in that, The flow-blocking area comprises a plurality of the sub-flow-blocking areas arranged in sequence along the inner corner profile towards the outer corner profile, and at least some of the adjacent sub-flow-blocking areas are connected integrally; and / or, at least some of the adjacent sub-flow-blocking areas are arranged in a spaced manner. 13.The display substrate according to any one of claims 1 to 8, characterized in that, The outer corner profile comprises at least a first arc segment protruding away from the display area, the inner corner profile comprises at least a second arc segment protruding away from the display area, the flow-blocking area has a flow-blocking outer profile, a flow-blocking inner profile, and an end profile connecting the flow-blocking outer profile and the flow-blocking inner profile, the flow-blocking outer profile comprises at least a third arc segment protruding away from the display area and arranged opposite to the first arc segment of the outer corner profile, the flow-blocking inner profile comprises at least a fourth arc segment protruding away from the display area and arranged opposite to the second arc segment of the inner corner profile, and the end profile is a stepped structure extending along the inner corner profile towards the outer corner profile. 14.The display substrate according to any one of claims 1 to 8, characterized in that, The corner area comprises a first isolation wall and a second isolation wall, the first isolation wall is located on the side of the second isolation wall close to the display area, and the flow-blocking area is arranged between the first isolation wall and the second isolation wall.

15. A display device comprising: The display substrate comprises the display substrate according to any one of claims 1 to 14. The display substrate comprises the display substrate according to any one of claims 1 to 14.

Images