Display substrate and display device

Abstract

The present application discloses a display substrate and a display device, relating to the field of display technologies. For the display substrate, the length of the side of the segment of the first power line covered by the blocking structure is relatively large, which can extend the path for water vapor or oxygen to enter through the first power line, and prevent water vapor or oxygen from being introduced into the pixel unit. Moreover, since the part with a relatively large side length of the segment of the first power line is covered by the blocking structure, it can prevent the first power line from being corroded due to a relatively long exposed segment of the first power line, ensure the quality of the first power line, and thus ensure the yield of the display substrate and improve the display effect of the display device.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a display substrate and a display device. Background Art

[0002] A display substrate generally includes a plurality of pixel units arranged in an array in a display area of a substrate substrate, and a power supply trace (generally referred to as a VDD trace) for providing a positive power supply signal for each pixel unit.

[0003] In related technologies, the substrate substrate includes a packaging area surrounding the display area. One end of the VDD trace is located outside the packaging area and is used to connect to a driving circuit, and the other end of the VDD trace is connected to a pixel unit located within the packaging area of the substrate substrate, so as to provide a positive power supply signal from the driving circuit for the pixel power supply. In order to prevent the side of the VDD trace from being exposed and causing the VDD trace to be corroded, an organic layer needs to be used to cover the VDD trace.

[0004] However, since the material for forming the organic layer is usually a hydrophilic material, and the organic layer is in contact with a part of the VDD trace located within the packaging area, and the organic layer is also located in the display area, after the other end of the VDD trace located outside the packaging area brings water vapor or oxygen into the packaging area, the water vapor will enter the display area through the organic layer, affecting the display effect of the display substrate. Summary of the Invention

[0005] The present application provides a display substrate and a display device, which can solve the problem of poor display effect of the display substrate in related technologies. The technical solution is as follows:

[0006] On the one hand, a display substrate is provided, and the display substrate includes:

[0007] A substrate substrate having a display area;

[0008] A plurality of pixel units located in the display area;

[0009] A blocking structure surrounding the display area;

[0010] A first organic film layer located on one side of the substrate substrate, and there is a gap between the orthographic projection of the first organic film layer on the substrate substrate and the orthographic projection of the blocking structure on the substrate substrate;

[0011] And at least one first power line located on the side of the first organic film layer close to the substrate. One end of the first power line is located on the side of the barrier structure away from the display area for receiving a first power signal, and the other end of the first power line is located on the side of the barrier structure close to the display area and is connected to the plurality of pixel units;

[0012] Wherein, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the side of the line segment of the first power line covered by a virtual barrier structure with the same width, and the extending direction of the virtual barrier structure is parallel to the extending direction of the barrier structure.

[0013] Optionally, a plurality of first protrusion structures located on the side of the first power line.

[0014] Optionally, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of one of the first protrusion structures.

[0015] Optionally, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the first protrusion structure covered by the virtual barrier structure.

[0016] Optionally, the orthographic projection of the first protrusion structure on the substrate does not overlap with the orthographic projection of the first organic film layer on the substrate, and the orthographic projection of the first protrusion structure on the substrate does not overlap with the orthographic projection of the barrier structure on the substrate.

[0017] Optionally, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the side of the line segment of the first power line covered by the virtual barrier structure at any position.

[0018] Optionally, the orthographic projection of the side of the part of the first power line covered by the barrier structure on the substrate is a broken line, and two adjacent line segments in the broken line are perpendicular to each other.

[0019] Optionally, among the line segments of the first power line covered by the barrier structure, the line width of the part close to the display area is greater than the line width of the part away from the display area.

[0020] Optionally, the length of the side of the line segment of the first power line covered by the first organic film layer is greater than the length of the side of the line segment of the first power line covered by a virtual first organic film layer with the same width, and the extending direction of the virtual first organic film layer is parallel to the extending direction of the first organic film layer.

[0021] Optionally, in the segment of the first power line covered by the first organic film layer, the line width of the portion located within the region surrounded by the blocking structure is greater than the line width of the portion located outside the region surrounded by the blocking structure.

[0022] Optionally, the difference between the side length of the segment of the first power line covered by the blocking structure and the side length of the segment of the first power line covered by the virtual blocking structure is greater than 400 microns.

[0023] Optionally, the side length of the segment of the first power line covered by the blocking structure is greater than 5 times the width of the blocking structure.

[0024] Optionally, the blocking structure includes: a first blocking dam and a second blocking dam;

[0025] The first blocking dam is farther from the display area than the second blocking dam, and the thickness of the first blocking dam is greater than the thickness of the second blocking dam.

[0026] Optionally, the width of the first blocking dam is greater than or equal to a first width threshold, and the width of the second blocking dam is greater than or equal to a second width threshold.

[0027] Optionally, the first distance along the extension direction of the first power line between the first blocking dam and the second blocking dam is greater than or equal to a first distance threshold.

[0028] Optionally, the first width threshold, the second width threshold, and the first distance threshold are all 40 microns.

[0029] Optionally, the first power line includes: a first segment and a second segment;

[0030] Wherein, the first segment is farther from the display area than the second segment, the first segment is covered by the first blocking dam, the second segment is covered by the second blocking dam, the side length of the first segment is greater than the side length of the segment of the first power line covered by the virtual blocking structure, and the side length of the second segment is greater than the side length of the segment of the first power line covered by the virtual blocking structure.

[0031] Optionally, the side length of the first segment is 1 to 5 times the side length of the second segment.

[0032] Optionally, the first blocking dam includes: a first pattern of the first organic film layer, a second pattern of the second organic film layer, and a third pattern of the third organic film layer stacked in sequence on the side away from the substrate.

[0033] The second blocking dam includes: a fourth pattern of the second organic film layer and a fifth pattern of the third organic film layer that are sequentially stacked on a side away from the substrate

[0034] Optionally, the display substrate further includes at least one strip-shaped extension structure, which is located on a side of the blocking structure close to the display area and is connected to a side of the other end of one of the first power lines, and the extension direction of the extension structure is perpendicular to the extension direction of the first power line.

[0035] Optionally, the display substrate includes two of the first power lines, and the two first power lines are symmetrically arranged with respect to the axis of the substrate.

[0036] Optionally, the other ends of the two first power lines are an integral structure.

[0037] Optionally, the display substrate further includes: a cathode layer and a second power line;

[0038] The cathode layer is located on a side of the first organic film layer away from the substrate;

[0039] The second power line is on the same layer as the first power line. The second power line includes a first part and a second part. The first part is located on a side of the blocking structure away from the display area and is used to receive a second power signal. The second part surrounds the display area, and a positive projection of the second part on the substrate overlaps a positive projection of the blocking structure on the substrate. The second part is connected to the cathode layer.

[0040] Optionally, the display substrate further includes: a plurality of second protrusion structures located on a side of the connection part.

[0041] Optionally, a positive projection of the second protrusion structure on the substrate does not overlap a positive projection of the first organic film layer on the substrate, and a positive projection of the second protrusion structure on the substrate does not overlap a positive projection of the blocking structure on the substrate.

[0042] Optionally, the second part of the second power line includes: a connection part and a surrounding part. The connection part is respectively connected to the first part and the surrounding part, and the surrounding part surrounds the display area;

[0043] Wherein, a length of a side of a part of the connection part covered by the blocking structure is greater than a length of a side of the connection part covered by the virtual blocking structure.

[0044] Optionally, the side of the portion of the connecting portion covered by the blocking structure forms a broken line in the orthographic projection on the substrate substrate, and two adjacent line segments in the broken line are perpendicular to each other.

[0045] Optionally, the side of the portion of the connecting portion covered by the blocking structure forms a straight line in the orthographic projection on the substrate substrate, and the straight line is parallel to the extending direction of the first power line; the second distance between the first power line and the connecting portion is greater than or equal to a second distance threshold, the third distance between the first power line and the connecting portion is greater than or equal to a third distance threshold, and the fourth distance between the first power line and the connecting portion is greater than or equal to a fourth distance threshold;

[0046] Wherein, the second distance is the maximum distance between the line segment of the first power line covered by the first blocking dam in the blocking structure and the connecting portion in the direction perpendicular to the extending direction of the first power line; the third distance is the maximum distance between the line segment of the first power line located between the first blocking dam and the second blocking dam in the blocking structure and the connecting portion in the direction perpendicular to the extending direction of the first power line; the fourth distance is the maximum distance between the line segment of the first power line covered by the second blocking dam and the connecting portion in the direction perpendicular to the extending direction of the first power line; the second distance threshold is greater than the third distance threshold, and the third distance threshold is greater than the fourth distance threshold.

[0047] Optionally, the fifth distance between the first power line and the connecting portion is greater than or equal to a fifth distance threshold, and the sixth distance between the first power line and the connecting portion is greater than or equal to a sixth distance threshold;

[0048] Wherein, the fifth distance is the maximum distance between the portion of the line segment of the first power line covered by the first organic film layer outside the area surrounded by the blocking structure and the connecting portion in the direction perpendicular to the extending direction of the first power line; the sixth distance is the maximum distance between the portion of the line segment of the first power line covered by the first organic film layer inside the area surrounded by the blocking structure and the connecting portion in the direction perpendicular to the extending direction of the first power line; the fifth distance threshold is greater than the second distance threshold, and the sixth distance threshold is less than the fourth distance threshold.

[0049] Optionally, the second distance threshold is 3323 microns, the third distance threshold is 2723 microns, the fourth distance threshold is 2123 microns, the fifth distance threshold is 3795 microns, and the sixth distance threshold is 1523 microns.

[0050] Optionally, the display substrate further includes at least one strip-shaped extension structure located on a side of the blocking structure close to the display area and connected to a side of the other end of one of the first power lines. The extension direction of the extension structure is perpendicular to the extension direction of the first power line;

[0051] The connecting portion is away from the display area relative to the extension structure.

[0052] Optionally, a side projection of a portion of the first power line covered by the blocking structure on the substrate is a broken line, and a side projection of a line segment of the first power line covered by the first organic film layer on the substrate is a broken line;

[0053] A seventh distance between a first step line and a second step line of the first power line in the extension direction of the first power line is greater than or equal to a seventh distance threshold;

[0054] An eighth distance between the second step line and a third step line of the first power line in the extension direction of the first power line is greater than or equal to an eighth distance threshold;

[0055] A ninth distance between the third step line and a fourth step line of the first power line in the extension direction of the first power line is greater than or equal to a ninth distance threshold;

[0056] A tenth distance between the fourth step line and the extension structure in the extension direction of the first power line is greater than or equal to a tenth distance threshold;

[0057] Wherein, the first step line is covered by the first organic film layer outside the area surrounded by the blocking structure; the second step line is covered by the first blocking dam of the blocking structure, the third step line is covered by the second blocking dam of the blocking structure, the fourth step line is covered by the first organic film layer within the area surrounded by the blocking structure, and the first step line, the second step line, the third step line, and the fourth step line are all perpendicular to the extension direction of the first power line.

[0058] Optionally, the seventh distance threshold is 140 micrometers, the eighth distance threshold is 80 micrometers, the ninth distance threshold is 110 micrometers, and the tenth distance threshold is 275 micrometers.

[0059] Optionally, an eleventh distance between the extension structure and the connecting portion in a direction perpendicular to the extension direction of the extension structure is greater than an eleventh distance threshold.

[0060] Optionally, the eleventh distance threshold is 80 micrometers.

[0061] Optionally, the first organic film layer covers a first portion of the second power supply line and covers a second portion of the second power supply line near and far from the boundary of the display area.

[0062] Optionally, the second power supply line includes two of the first portions;

[0063] Wherein, one of the first portions is connected to one end of the second portion, and the other first portion is connected to the other end of the second portion, and the two first portions are symmetrically arranged with respect to the axis of the substrate.

[0064] Optionally, one end of each of the first power supply lines is located between the two first portions.

[0065] On the other hand, a display device is provided, characterized in that the display device includes: a power supply driving circuit and a display substrate as described in the above aspect;

[0066] The power supply driving circuit is connected to at least one first power supply line in the display substrate for providing a first power signal to the first power supply line.

[0067] The beneficial effects brought by the technical solution provided in this application at least include:

[0068] This application provides a display substrate and a display device. For the display substrate, the length of the side of the segment of the first power supply line covered by the blocking structure is relatively large, which can extend the path for water vapor or oxygen to enter through the first power supply line, and prevent water vapor or oxygen from being introduced into the pixel unit. Moreover, since the part with a relatively large side length of the segment of the first power supply line is covered by the blocking structure, it can prevent the exposed segment of the first power supply line from being too long and being corroded, ensuring the quality of the first power supply line, thereby ensuring the yield of the display substrate and improving the display effect of the display device. Description of the Drawings

[0069] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0070] Figure 1 is a schematic structural diagram of a display substrate provided by an embodiment of the present application;

[0071] Figure 2 is Figure 1 a cross-sectional view of the display substrate shown along the AA direction;

[0072] Figure 3 It is a schematic structural diagram of another display substrate provided by an embodiment of the present application;

[0073] Figure 4 is Figure 1 a partial structural schematic diagram of the display substrate shown;

[0074] Figure 5 It is a schematic structural diagram of yet another display substrate provided by an embodiment of the present application;

[0075] Figure 6 It is a schematic structural diagram of still another display substrate provided by an embodiment of the present application;

[0076] Figure 7 is Figure 6 a partial structural schematic diagram of the display substrate shown;

[0077] Figure 8 It is a partial structural schematic diagram of a display substrate provided by an embodiment of the present application;

[0078] Figure 9 It is a schematic structural diagram of still another display substrate provided by an embodiment of the present application;

[0079] Figure 10 is Figure 9 a partial structural schematic diagram of the display substrate shown;

[0080] Figure 11 is Figure 3 a partial structural schematic diagram of the display substrate shown;

[0081] Figure 12 It is a partial structural schematic diagram of another display substrate provided by an embodiment of the present application;

[0082] Figure 13 It is a partial structural schematic diagram of yet another display substrate provided by an embodiment of the present application;

[0083] Figure 14 It is a schematic structural diagram of a first power supply line and a blocking structure provided by an embodiment of the present application;

[0084] Figure 15 It is a schematic structural diagram of still another display substrate provided by an embodiment of the present application;

[0085] Figure 16 is Figure 15 a partial structural schematic diagram of the display substrate shown;

[0086] Figure 17 It is a partial structural schematic diagram of still another display substrate provided by an embodiment of the present application;

[0087] Figure 18 is Figure 15 a cross-sectional view of the shown display substrate along the BB direction;

[0088] Figure 19 is a schematic structural diagram of a first power line and a connection part provided by an embodiment of the present application;

[0089] Figure 20 is a schematic structural diagram of a first power line provided by an embodiment of the present application;

[0090] Figure 21 is a schematic structural diagram of another display substrate provided by an embodiment of the present application;

[0091] Figure 22 is a schematic structural diagram of a display device provided by an embodiment of the present application. Detailed implementation manners

[0092] To make the objectives, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the accompanying drawings.

[0093] Figure 1 is a schematic structural diagram of a display substrate provided by an embodiment of the present application. Figure 2 is Figure 1 a cross-sectional view of the shown display substrate along the AA direction. Combining Figure 1 and Figure 2 it can be seen that the display substrate 10 may include: a substrate 101, a plurality of pixel units 102, a barrier structure 103, a first organic film layer 104, and at least one first power line 105. Among them, the substrate 101 may have a display area 101a, and the plurality of pixel units 102 may be located in the display area 101a. The barrier structure 103 may surround the display area 101a, that is, referring to Figure 1 , the barrier structure 103 may surround the plurality of pixel units 102.

[0094] The first organic film layer 104 may be located on one side of the substrate 101, and there may be a gap between the orthographic projection of the first organic film layer 104 on the substrate 101 and the orthographic projection of the barrier structure 103 on the substrate 101. The at least one first power line 105 may be located on the side of the first organic film layer 104 close to the substrate 101. One end 105a of the first power line 105 may be located on the side of the barrier structure 103 away from the display area 101a for receiving a power signal. The other end 105b of the first power line 105 may be located on the side of the barrier structure 103 close to the display area 101a and connected to the plurality of pixel units 102.

[0095] Exemplarily, Figure 1Two first power supply lines 105 are shown. One end 105a of the first power supply line 105 can be connected to a power supply driving circuit to receive a first power signal provided by the power supply driving circuit. Of course, the display substrate 10 may further include more first power supply lines 105, which is not limited in the embodiments of the present application.

[0096] Since the organic material used to form the first organic film layer 104 is usually a hydrophilic material, by providing a gap between the orthographic projection of the first organic film layer 104 on the substrate 101 and the orthographic projection of the barrier structure 103 on the substrate 101, the part of the first organic film layer 104 located away from the display area 101a of the barrier structure 103 can be made not to contact the part of the first organic film layer 104 located close to the display area 101a of the barrier structure 103. Thereby, the moisture or oxygen brought in by one end 105a of the first power supply line 105 can be reduced from being introduced into the pixel unit 102 through the first organic film layer 104, ensuring the yield of the display substrate 10 and achieving a better display effect of the display device.

[0097] Moreover, in the embodiments of the present application, the length of the side of the segment of the first power supply line 105 covered by the barrier structure 103 is greater than the length of the first power supply line 105 covered by a virtual barrier structure of the same width. Herein, the length of the side of the segment of the first power supply line 105 covered by the barrier structure 103 may refer to the length of the orthographic projection of the side of the segment of the first power supply line 105 covered by the barrier structure 103 on the substrate 101. Refer to Figure 3 , the extending direction of the virtual barrier structure k1 is parallel to the extending direction of the barrier structure 103.

[0098] Exemplarily, refer to Figure 4 , the orthographic projection of one side of the segment of the first power supply line 105 covered by the barrier structure 103 on the substrate 101 is a broken line. Since the length of the side of the segment of the first power supply line 105 covered by the barrier structure 103 is relatively large (for example, greater than the length of the side of the segment of the first power supply line 105 covered by the virtual barrier structure), the path for moisture or oxygen to enter through the first power supply line 105 can be extended, preventing moisture from being introduced into multiple pixel units 102.

[0099] Moreover, since there is a gap between the orthographic projection of the first organic film layer 104 on the substrate 101 and the orthographic projection of the barrier structure 103 on the substrate 101, a partial area of the first power line 105 cannot be covered by the first organic film layer 104, that is, a partial area of the first power line 105 is exposed. This may cause the etching solution to react with the exposed first power line 105 during the subsequent etching process for forming the anode layer, resulting in defects at the boundary of the first power line 105. For example, black spots are formed at the boundary of the first power line 105, and the growing dark spot (GDS) of these black spots gradually enlarging may cause the display device to fail and affect the display effect of the display device.

[0100] In the embodiment of the present application, since a partial area of the side with a larger side length of the line segment of the first power line 105 is covered by the barrier structure 103, it is possible to avoid a longer exposed line segment of the first power line 105 from causing corrosion of a longer boundary of the first power line 105 while ensuring the extension of the path for water vapor or oxygen to enter through the first power line 105. Furthermore, it is possible to avoid the formation of a large number of black spots at the boundary of the first power line 105, that is, to avoid aggravating the GDS defect, and the display effect of the display device is better.

[0101] In summary, the embodiment of the present application provides a display substrate. In the display substrate, the side length of the side of the line segment of the first power line covered by the barrier structure is relatively large, which can extend the path for water vapor or oxygen to enter through the first power line and avoid water vapor or oxygen from being introduced into the pixel unit. Moreover, since a partial area of the side with a larger side length of the line segment of the first power line is covered by the barrier structure, it is possible to avoid a longer exposed line segment of the first power line from causing corrosion of the first power line, ensure the quality of the first power line, and further ensure the yield of the display substrate and improve the display effect of the display device.

[0102] In addition, the display substrate provided by the embodiment of the present application has no newly added film layer. Therefore, there is no need to add a new mask plate and manufacturing process during the manufacturing process, and the efficiency is relatively high.

[0103] Reference Figure 1 , the orthographic projection of one side of the line segment of the first power line 105 covered by the barrier structure 103 on the substrate 101 may be a broken line or a curve. Or, reference Figure 5 , the orthographic projections of both sides of the line segment of the first power line 105 covered by the barrier structure 103 on the substrate 101 may be a broken line or a curve.

[0104] Optionally, the length of the side of the segment of the first power line 105 covered by the blocking structure 103 is greater than the difference between the first power line 105 covered by the virtual blocking structure by 400 μm (micrometers). Thereby, the path for water vapor to enter can be effectively extended, ensuring the yield of the display substrate 10. Moreover, the length of the side of the segment of the first power line 105 covered by the blocking structure 103 can be greater than 5 times the width of the blocking structure 103.

[0105] In the embodiment of the present application, one end 105a of the first power line 105 is located outside the area surrounded by the blocking structure 103, and the other end is located inside the area surrounded by the blocking structure 103. That is, the first power line 105 can pass through the blocking structure 103 and enter the area surrounded by the blocking structure 103. Among them, the part of the blocking structure 103 through which the power line passes can be called an inlet port (port).

[0106] In the embodiment of the present application, the other ends 105b of the plurality of first power lines 105 can be electrically connected to the transistors in the pixel units 102 in the display substrate 10. For example, it can be connected to the source or drain of the transistors in the pixel unit 102. The first power line 105 can be used to provide a first power signal (the first power signal is a positive power signal) for the transistors in the pixel unit 102. Therefore, the first power line can also be called a VDD power line or a VDD trace.

[0107] Figure 6 is a schematic structural diagram of another display substrate provided by the embodiment of the present application. Refer to Figure 6 It can be seen that the display substrate may further include: a plurality of first protrusion structures 106 located on the side of the first power line 105.

[0108] By setting the side of the segment of the first power line 105 covered by the blocking structure 103 as a broken line or a curve, and arranging a plurality of first protrusion structures 106 on the side of the first power line 105, the path for water vapor or oxygen to enter through the first power line 105 can be further extended, preventing water vapor or oxygen from being introduced into the plurality of pixel units 102 through the first power line 105. Among them, the plurality of first protrusion structures 106 can be prepared from the same material as the first power line 105 by the same patterning process, and the plurality of first protrusion structures 106 can be an integral structure with the first power line 105.

[0109] Figure 7 is Figure 6 a schematic partial structural diagram of the display substrate shown in. Refer to Figure 7, the orthographic projection of the first convex structure 106 on the substrate 101 may not overlap with the orthographic projection of the first organic film layer 104 on the substrate 101, and the orthographic projection of the first convex structure 106 on the substrate 101 may not overlap with the orthographic projection of the barrier structure 103 on the substrate 101. That is to say, the first convex structure 106 is arranged on the side of the part of the first power line 105 that is not covered by the first organic film layer 104 and the barrier structure 103, thereby reducing the risk of corrosion of the part of the first power line 105 that is not covered by the first organic film layer 104 and the barrier structure 103 and ensuring the quality of the first power line 105.

[0110] Of course, referring to Figure 8 , the orthographic projection of the first convex structure 106 on the substrate 101 may also overlap with the orthographic projections of the barrier structure 103 and the first organic film layer 104 on the substrate 101. That is to say, in addition to being arranged on the side of the part of the first power line 105 that is not covered by the first organic film layer 104 and the barrier structure 103, the first convex structure 106 may also be arranged on the side of the part of the first power line 105 covered by the first organic film layer 104, or on the side of the part of the first power line 105 covered by the barrier structure 103, thereby further extending the path of water vapor entry and ensuring the yield of the display substrate 10.

[0111] Referring to Figure 4 It can be seen that the orthographic projection of one side of the part of the first power line 105 covered by the barrier structure 103 on the substrate 101 may be a broken line, and two adjacent line segments in the broken line are perpendicular to each other. That is to say, the side of the first power line 105 may be stepped.

[0112] Optionally, in combination with Figure 1 and Figure 4 , among the line segments of the first power line 105 covered by the barrier structure 103, the line width w1 of the part close to the display area 101a may be greater than the line width w2 of the part far from the display area 101a. That is to say, the line width w1 of the part of the first power line 105 close to the display area 101a is larger, while the line width w2 of the part far from the display area 101a is smaller, thereby reducing the area of the first power line 105 outside the barrier structure 103 and increasing the screen-to-body ratio of the display device.

[0113] Of course, among the line segments of the first power line 105 covered by the barrier structure 103, the line width of the part close to the display area 101a may also be smaller than the line width of the part far from the display area 101a, and the embodiments of the present application do not limit this.

[0114] Figure 9 is a schematic structural diagram of another display substrate provided by the embodiments of the present application.Figure 10 is Figure 9 a schematic diagram of a partial structure of the display substrate shown. Refer to Figure 9 and Figure 10 It can be seen that the length of the side of the segment of the first power line 105 covered by the first organic film layer 104 can be greater than the length of the first power line 105 covered by the virtual first organic film layer of the same width.

[0115] Among them, the length of the side of the segment of the first power line 105 covered by the first organic film layer 104 can refer to the length of the positive projection of the side of the segment of the first power line 105 covered by the first organic film layer 104 on the substrate 101. The extending direction of the virtual first organic film layer can be parallel to the extending direction of the first organic film layer 104.

[0116] Since the length of the side of the segment of the first power line 105 covered by the first organic film layer 104 is relatively large, the path for water vapor or oxygen to enter through the first power line 105 can be further extended, avoiding the introduction of water vapor into the plurality of pixel units 102.

[0117] Combined with Figure 9 and Figure 10 , the positive projection of the side of the part of the first power line 105 covered by the first organic film layer 104 on the substrate 101 can be in a broken line, and two adjacent segments in the broken line are perpendicular to each other. Among the segments of the first power line 105 covered by the first organic film layer 104, the line width w3 of the part located within the area surrounded by the blocking structure 103 can be greater than the line width w4 of the part located outside the area surrounded by the blocking structure 103. That is to say, the line width of the part of the first power line 105 close to the display area 101a can be relatively large, while the line width of the part far from the display area 101a can be relatively small, that is, w3 > w1 > w2 > w4. Thus, the area of the first power line 105 in the area outside the blocking structure 103 can be reduced, improving the screen-to-body ratio of the display device.

[0118] In the embodiment of the present application, refer to Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 9 , the blocking structure 103 can be an annular structure surrounding the display area 101a, used to block the overflow of the organic layer in the area surrounded by the blocking structure 103 in the display substrate 10. The blocking structure 103 can include: a first blocking dam 1031 and a second blocking dam 1032. The first blocking dam 1031 is farther from the display area 101a than the second blocking dam 1032, and the thickness of the first blocking dam 1031 can be greater than the thickness of the second blocking dam 1032.

[0119] By providing two blocking dams, and the thickness of the first blocking dam 1031 farther from the display area 101a is greater than the thickness of the second blocking dam 1032 closer to the display area 101a, the overflow of the organic layer within the area surrounded by the blocking structure 103 can be further prevented. Of course, the blocking structure 103 may also include one blocking dam, or more than two blocking dams, and the embodiments of the present application do not limit this.

[0120] In the embodiments of the present application, the length of the side of the line segment of the first power line 105 covered by the blocking structure 103 may be greater than the length of one first protrusion structure 106. And referring to Figure 11 , the length of the side of the line segment of the first power line 105 covered by the blocking structure 103 may be greater than the length of the first protrusion structure 106 covered by the virtual blocking structure k1. Among them, the number of the first protrusion structures 106 covered by the virtual blocking structure k1 may be one, or may be multiple.

[0121] Optionally, the virtual blocking structure may be located at any position. For example, referring to Figure 3 and Figure 11 , the virtual blocking structure k1 may be located on the side of the blocking structure 103 closer to the display area 101a. Or, referring to Figure 12 , the virtual blocking structure k2 may be located between the first blocking dam 1031 and the second blocking dam 1032. Or, referring to Figure 13 , the virtual blocking structure k3 may be located on the side of the blocking structure 103 farther from the display area 101a.

[0122] The length of the side of the line segment of the first power line 105 covered by the blocking structure 103 may be greater than the length of the side of the line segment of the first power line 105 covered by the virtual blocking structure at any position. For example, the length of the side of the line segment of the first power line 105 covered by the blocking structure 103 is greater than Figure 3 and Figure 11 the length of the side of the line segment of the first power line 105 covered by the virtual blocking structure k1 therein. And, the length of the side of the line segment of the first power line 105 covered by the blocking structure 103 is greater than Figure 12 the length of the side of the line segment of the first power line 105 covered by the virtual blocking structure k2 therein. And, the length of the side of the line segment of the first power line 105 covered by the blocking structure 103 is greater than Figure 13 the length of the side of the line segment of the first power line 105 covered by the virtual blocking structure k3 therein.

[0123] Referring to Figure 4 , Figure 7 , Figure 8 , and Figures 10 to 13, since the barrier structure 103 includes two barrier dams, the first power line 105 may include: a first line segment 1051 and a second line segment 1052. Among them, the first line segment 1051 is farther from the display area 101a than the second line segment 1052. The first line segment 1051 may be covered by the first barrier dam 1031, and the second line segment 1052 may be covered by the second barrier dam 1032. The length of the side of the first line segment 1051 is greater than the length of the first power line 105 covered by the virtual barrier structure, and the length of the side of the second line segment 1052 is greater than the length of the first power line 105 covered by the virtual barrier structure. That is, by setting the lengths of the sides of the two line segments to be larger, the path for water vapor or oxygen to enter can be extended.

[0124] Optionally, the length of the side of the first line segment 1051 may be 1 to 5 times the length of the side of the second line segment 1052.

[0125] In the embodiment of the present application, if the barrier structure 103 includes a larger number of barrier dams, the first power line 105 may also include a larger number of line segments (the length of the side of each line segment is larger. For example, the orthographic projection of the side of each line segment on the substrate 101 may be a broken line or a curve), as long as it is ensured that the orthographic projection of the side of each line segment on the substrate 101 is covered by a barrier dam.

[0126] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 9 , the orthographic projections of the first barrier dam 1031 and the second barrier dam 1032 on the substrate 101 may both be annular, and the first barrier dam 1031 surrounds the second barrier dam 1032.

[0127] Reference Figure 2 It can be seen that the first barrier dam 1031 may include: a first pattern 104a of the first organic film layer 104, a second pattern 107a of the second organic film layer 107, and a third pattern 108a of the third organic film layer 108, which are sequentially stacked on the side away from the substrate 101. The second barrier dam 1032 may include: a fourth pattern 107b of the second organic film layer 107, and a fifth pattern 108b of the third organic film layer 108, which are sequentially stacked on the side away from the substrate 101.

[0128] Among them, the second pattern 107a of the second organic film layer 107 and the fourth pattern 107b of the second organic film layer 107 may be made of the same material by the same patterning process. The third pattern 108a of the third organic film layer 108 and the fifth pattern 108b of the third organic film layer 108 may be made of the same material by the same patterning process.

[0129] In an embodiment of the present application, the first organic film layer 104 may be a planarization layer (PNL), the second organic film layer 107 may be a pixel definition layer (PDL), and the third organic film layer 108 may be a photo spacer (PS).

[0130] Optionally, the first organic film layer 104, the second organic film layer 107, and the third organic film layer 108 may all be made of organic materials. For example, they may be made of resin materials. The embodiments of the present application do not limit this.

[0131] Reference Figure 2 It can be seen that the first dam 1031 has one more organic pattern than the second dam 1032, so that the thickness of the first dam 1031 can be greater than the thickness of the second dam 1032 to prevent the overflow of the organic layer.

[0132] Figure 14 It is a schematic diagram of a first power line and a barrier structure provided by an embodiment of the present application. Reference Figure 14 , the width h1 of the first dam 1031 may be greater than or equal to a first width threshold, and the width h2 of the second dam 1032 may be greater than or equal to a second width threshold. The first distance d1 between the first dam 1031 and the second dam 1032 along the extension direction of the first power line 105 is greater than or equal to a first distance threshold.

[0133] Optionally, the first width threshold, the second width threshold, and the first distance threshold may all be 40 μm. That is, the width h1 of the first dam 1031, the width h2 of the second dam 1032, and the first distance d1 are all greater than or equal to 40 μm.

[0134] Figure 15 It is a schematic diagram of the structure of another display substrate provided by an embodiment of the present application. Figure 16 Is Figure 15 A partial structure schematic diagram of the shown display substrate. Figure 17 It is a partial structure schematic diagram of a display substrate provided by an embodiment of the present application. Reference Figures 15 to 17 It can be seen that the display substrate 10 may further include: at least one strip-shaped extension structure 109. The extension structure 109 may be located on the side of the barrier structure 103 close to the display area 101a and connected to the side of the other end 105b of a first power line 105. The extension direction M of the extension structure 109 is perpendicular to the extension direction N of the first power line 105.

[0135] Under normal circumstances, the first power signal received by the first power line 105 needs to be transmitted to each pixel unit 102 in the display area 101a. The distance between the pixel unit 102 in the middle of the display area 101a and the first power line 105 is relatively small, while the distance between the pixel unit 102 at the boundary of the display area 101a and the first power line 105 is relatively large. As a result, the reliability of the first power signal received by the pixel unit 102 at the boundary of the display area 101a may be relatively low.

[0136] Therefore, in the embodiment of the present application, an extension structure 109 is provided on the side of the other end 105b of the first power line 105. The first power signal received by the first power line 105 can be transmitted to the pixel unit 102 at the boundary of the display area 101a through the extension structure 109, ensuring the reliability of the first power signal received by the pixel unit 102 at the boundary of the display area 101a, and further ensuring the display effect of the display device.

[0137] Optionally, the at least one strip-shaped extension structure 109 can be prepared by a single patterning process using the same material as the first power line 105, and the at least one strip-shaped extension structure 109 and the first power line 105 can be an integral structure.

[0138] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 And Figure 9 It can be seen that the display substrate 10 can include two first power lines 105, and the two first power lines 105 can be symmetrically arranged with respect to the axis X of the substrate 101. And, referring to Figure 15 ,the other ends 105b of the two first power lines 105 can be an integral structure, so as to ensure the consistency of the first power signals transmitted by the two first power lines 105 to each pixel unit 102 in the display area 101a, and ensure the display effect of the display device.

[0139] Figure 18 is Figure 15 A cross-sectional view along the BB direction. Referring to Figure 2 and Figure 18 It can be seen that the display substrate 10 may further include: a cathode layer 110. The cathode layer 110 may be located on the side of the first organic film layer 104 away from the substrate 101. And, the orthographic projection of the cathode layer 110 on the substrate 101 may cover the display area 101a, and the orthographic projection of the cathode layer 110 on the substrate 101 may be located within the area surrounded by the blocking structure 103.

[0140] Reference Figure 1 ,Figure 3 , Figure 5 , Figure 6 , Figure 9 , Figure 15 and Figure 17 , the display substrate 10 may further include: a second power line 111. The second power line 111 may be on the same layer as the first power line 105. The second power line 111 may include a first portion 1111 and a second portion 1112. The first portion 1111 may be located on a side of the barrier structure 103 away from the display area 101a for receiving a second power signal. For example, the first portion 1111 may be connected to a power driving circuit to receive the second power signal provided by the power driving circuit. The second portion 1112 may surround the display area 101a, and a positive projection of the second portion 1112 on the substrate 101 may overlap a positive projection of the barrier structure 103 on the substrate 101. The second portion 1112 may be connected to the cathode layer 110.

[0141] Optionally, the first portion 1111 and the second portion 1112 may be in direct contact, for example, may be an integral structure.

[0142] Since the second portion 1112 of the second power line 111 is connected to the cathode layer 110 to provide a second power signal for the cathode layer 110, and the second power signal received by the cathode layer 110 is a negative power signal, the second power line 111 may also be referred to as a VSS power line or a VSS trace.

[0143] Reference Figure 17 , the display substrate 10 may further include: a plurality of second protrusion structures 112 located on a side of the connection portion 11121. By providing a plurality of second protrusion structures 112 on a side of the second power line 111, a path for water vapor or oxygen to enter through the second power line 111 can be further extended, preventing water vapor or oxygen from being introduced into the plurality of pixel units 102 through the second power line 111. Among them, the plurality of second protrusion structures 112 may be made of the same material as the second power line 111 and prepared by the same patterning process, and the plurality of second protrusion structures 112 and the second power line 111 may be an integral structure.

[0144] Optionally, reference Figure 17, the orthographic projection of the second convex structure 112 on the substrate 101 may not overlap with the orthographic projection of the first organic film layer 104 on the substrate 101, and the orthographic projection of the second convex structure 112 on the substrate 101 may not overlap with the orthographic projection of the barrier structure 103 on the substrate 101. That is, the second convex structure 112 is disposed on the side of the portion of the second power line 111 that is not covered by the first organic film layer 104 and the barrier structure 103, thereby reducing the risk of corrosion of the portion of the second power line 111 that is not covered by the first organic film layer 104 and the barrier structure 103 and ensuring the quality of the second power line 111.

[0145] Of course, the orthographic projection of the second convex structure 112 on the substrate 101 may also overlap with the orthographic projections of the barrier structure 103 and the first organic film layer 104 on the substrate 101. That is, in addition to being disposed on the side of the portion of the second power line 111 that is not covered by the first organic film layer 104 and the barrier structure 103, the second convex structure 112 may also be disposed on the side of the portion of the second power line 111 that is covered by the first organic film layer 104, or on the side of the portion of the second power line 111 that is covered by the barrier structure 103, thereby further extending the path of water vapor entry and ensuring the yield of the display substrate 10.

[0146] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 9 , Figure 15 And Figure 17 , the second portion 1112 of the second power line 111 may include: a connecting portion 11121 and a surrounding portion 11122. The connecting portion 11121 may be connected to the first portion 1111 and the surrounding portion 11122 respectively, the surrounding portion 11122 may surround the display area 101a, and the surrounding portion 11122 is farther from the first portion 1111 relative to the connecting portion 11121. And, the surrounding portion 11122 may be a non-closed structure, for example, Figure 1 , Figure 3 , Figure 5 , Figure 6 And Figure 9 in which the surrounding portion 11122 surrounds three sides of the display area 101a.

[0147] Among them, the length of the side of the portion of the connecting portion 11121 covered by the barrier structure 103 is greater than the length of the side of the connecting portion 11121 covered by the virtual barrier structure. By way of example, reference Figure 17 , the orthographic projection of the side of the portion of the connecting portion 11121 covered by the barrier structure 103 on the substrate 101 may be a broken line or a curve.

[0148] In the embodiment of the present application, the side of the portion of the connecting portion 11121 covered by the blocking structure 103 has a broken line or a curve in the orthographic projection on the substrate 101, thereby being able to extend the path for water vapor or oxygen to enter through the second power line 111, and preventing water vapor or oxygen from being introduced into the pixel unit 102 through the second power line 111.

[0149] Optionally, referring to Figure 17 , the side of the portion of the connecting portion 11121 covered by the blocking structure 103 has a broken line in the orthographic projection on the substrate 101, and two adjacent line segments in the broken line are perpendicular to each other. That is, the side of the connecting portion 11121 can be in a stepped shape.

[0150] In the embodiment of the present application, the length of the side of the portion of the connecting portion 11121 covered by the blocking structure 103 can also be less than or equal to the perimeter of the second protrusion structure 112 covered by the blocking structure 103 with the same width. For example, referring to Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 9 and Figure 15 , the side of the portion of the connecting portion 11121 covered by the blocking structure 103 can also have a straight line in the orthographic projection on the substrate 101, and the straight line is parallel to the extension direction N of the first power line 105.

[0151] The second distance d2 between the first power line 105 and the connecting portion 11121 can be greater than or equal to a second distance threshold, the third distance d3 between the first power line 105 and the connecting portion 11121 can be greater than or equal to a third distance threshold, and the fourth distance d4 between the first power line 105 and the connecting portion 11121 can be greater than or equal to a fourth distance threshold.

[0152] Among them, referring to Figure 19 , the second distance d2 can be the maximum distance between the line segment of the first power line 105 covered by the first blocking dam 1031 and the connecting portion 11121 in the direction perpendicular to the extension direction N of the first power line 105. The third distance d3 is the maximum distance between the line segment of the first power line 105 located between the first blocking dam 1031 and the second blocking dam 1032 and the connecting portion 11121 in the direction perpendicular to the extension direction N of the first power line 105. The fourth distance d4 can be the maximum distance between the line segment of the first power line 105 covered by the second blocking dam 1032 and the connecting portion 11121 in the direction perpendicular to the extension direction N of the first power line 105.

[0153] Optionally, the second distance threshold is greater than the third distance threshold, and the third distance threshold is greater than the fourth distance threshold. That is, the second distance d2 can be greater than the third distance d3, and the third distance d3 can be greater than the fourth distance d4, i.e., d2 > d3 > d4.

[0154] In an embodiment of the present application, the fifth distance d5 between the first power line 105 and the connecting portion 11121 may be greater than or equal to the fifth distance threshold, and the sixth distance d6 between the first power line 105 and the connecting portion 11121 may be greater than or equal to the sixth distance threshold.

[0155] Wherein, the fifth distance d5 may be the maximum distance between the portion of the line segment of the first power line 105 covered by the first organic film layer 104 between the regions surrounded by the blocking structure 103 and the connecting portion 11121 in the direction perpendicular to the extending direction N of the first power line 105. The sixth distance d6 may be the maximum distance between the portion of the line segment of the first power line 105 covered by the first organic film layer 104 within the region surrounded by the blocking structure 103 and the connecting portion 11121 in the direction perpendicular to the extending direction N of the first power line 105.

[0156] Optionally, the fifth distance threshold may be greater than the second distance threshold, and the sixth distance threshold may be less than the fourth distance threshold. That is, the fifth distance d5 can be greater than the second distance d2, and the fourth distance d4 can be greater than the sixth distance d6, i.e., d5 > d2 > d3 > d4 > d6.

[0157] In an embodiment of the present application, the second distance threshold may be 3323 μm, the third distance threshold may be 2723 μm, the fourth distance threshold may be 2123 μm, the fifth distance threshold may be 3795 μm, and the sixth distance threshold may be 1523 μm.

[0158] Since the second distance d2, the third distance d3, the fourth distance d4, the fifth distance d5, and the sixth distance d6 are all relatively large, the coupling capacitance generated between the first power line 105 and the second power line 111 can be reduced, ensuring the display effect of the display device.

[0159] In an embodiment of the present application, Figure 19 To clearly illustrate the second distance d2, the third distance d3, and the fourth distance d4, the first protrusion structure 106 provided on the side of the portion of the first power line 105 not covered by the first organic film layer 104 is not shown.

[0160] Refer to Figure 15 and Figure 17, the connecting portion 11121 can be away from the display area 101a relative to the extending structure 109. That is to say, the distance between the connecting portion 11121 and the display area 101a can be relatively large, and the distance between the extending structure 109 and the display area 101a can be relatively small, so as to facilitate the first power supply line 105 to transmit the first power signal to the pixel unit 102 in the display area 101a through the extending structure 109.

[0161] Reference Figure 15 and Figure 17 , the orthographic projection of the side of the portion of the first power supply line 105 covered by the blocking structure 103 on the substrate 101 is a broken line, and the orthographic projection of the side of the line segment of the first power supply line 105 covered by the first organic film layer 104 on the substrate 101 is a broken line.

[0162] Reference Figure 20 , the seventh distance d7 between the first step line L1 and the second step line L2 of the first power supply line 105 in the extending direction N of the first power supply line 105 is greater than or equal to the seventh distance threshold. The eighth distance d8 between the second step line L2 and the third step line L3 of the first power supply line 105 in the extending direction N of the first power supply line 105 is greater than or equal to the eighth distance threshold. The ninth distance d9 between the third step line L3 and the fourth step line L4 of the first power supply line 105 in the extending direction N of the first power supply line 105 is greater than or equal to the ninth distance threshold. The tenth distance d10 between the fourth step line L4 and the extending structure 109 in the extending direction N of the first power supply line 105 is greater than or equal to the tenth distance threshold.

[0163] Among them, in combination with Figure 19 and Figure 20 , the first step line L1 is covered by the first organic film layer 104 outside the area surrounded by the blocking structure 103. The second step line L2 is covered by the first blocking dam 1031 of the blocking structure 103. The third step line L3 is covered by the second blocking dam 1032 of the blocking structure 103. The fourth step line L4 is covered by the first organic film layer 104 inside the area surrounded by the blocking structure 103. The first step line L1, the second step line L2, the third step line L3, and the fourth step line L4 are all perpendicular to the extending direction N of the first power supply line 105.

[0164] Optionally, the seventh distance threshold can be 140μm, the eighth distance threshold can be 80μm, the ninth distance threshold can be 110μm, and the tenth distance threshold can be 275μm.

[0165] In the embodiments of the present application, reference Figure 19, the eleventh distance d11 between the extension structure 109 and the connection part 11121 along the extension direction N of the first power line 105 can be greater than the eleventh distance threshold. Optionally, the eleventh distance threshold can be 80 μm.

[0166] Since the eleventh distance d11 is relatively large, the coupling capacitance generated by the extension structure 109 and the second power line 111 can be reduced, ensuring the display effect of the display device.

[0167] In the embodiment of the present application, the first organic film layer 104 can cover the first part 1111 of the second power line 111, and can cover the boundaries of the second part 1112 of the second power line 111 close to and far from the display area 101a. Thus, it is possible to avoid the corrosion of the boundaries of the second part 1112 of the second power line 111 and the first part 1111, ensuring the quality of the second power line 111.

[0168] Reference Figure 15 , the second power line 111 can include two first parts 1111. Among them, one first part 1111 can be connected to one end of the second part 1112, and the other first part 1111 can be connected to the other end of the second part 1112. The two first parts 1111 can be symmetrically arranged with respect to the axis X of the substrate 101.

[0169] Optionally, one end 105a of the first power line 105 can be located between the two first parts 1111. Exemplarily, Figure 15 shows two first power lines 105, and one ends 105a of the two first power lines 105 are both located between the two first parts 1111.

[0170] Reference Figure 2 and Figure 18 It can be seen that the display substrate 10 can further include: a packaging film layer 113. The packaging film layer 113 can be located on the side of the first organic film layer 104 away from the substrate 101, and the packaging film layer 113 can cover the area surrounded by the barrier structure 103. Reference Figure 2 , the boundary of the area 113a covered by the packaging film layer 113 can be located on the side of the barrier structure 103 away from the plurality of pixel units 002.

[0171] In the embodiment of the present application, the packaging film layer 113 can include: a first film layer 1131, a second film layer 1132, and a third film layer 1133 stacked in a direction away from the substrate 101.

[0172] Optionally, the first film layer 1131 and the third film layer 1133 may be made of inorganic materials, and the second film layer 1132 may be made of organic materials. For example, the first film layer 1131 and the third film layer 1133 may be made of one or more inorganic oxides such as SiNx (silicon nitride), SiOx (silicon oxide), and SiOxNy (silicon oxynitride). The second film layer 1132 may be made of a resin material. The resin may be a thermoplastic resin or a thermosetting resin. The thermoplastic resin may include acrylic (PMMA) resin, and the thermosetting resin may include epoxy resin.

[0173] It should be noted that the second film layer 1132 may be located within the region surrounded by the barrier structure 103. The first film layer 1131 and the third film layer 1133 may cover the region surrounded by the barrier structure 103 and cover the barrier structure 103. That is, the orthographic projection of the barrier structure 103 on the substrate 101 is located within the region covered by the encapsulation film layer 113, thereby ensuring the effective encapsulation of each structure within the region surrounded by the barrier structure 103 by the encapsulation film layer 113.

[0174] In the embodiment of the present application, the second film layer 1132 may be fabricated by ink jet printing (IJP). The first film layer 1131 and the third film layer 1133 may be fabricated by chemical vapor deposition (CVD).

[0175] Figure 21 is a schematic structural diagram of another display substrate provided by the embodiment of the present application. Refer to Figure 21 As can be seen, the display substrate may further include: a buffer layer 114, a semiconductor layer 115, a gate insulating layer 116, a gate 117, an interlayer dielectric layer 118, and a source-drain layer 119, which are stacked in sequence along the direction away from the substrate 101. The source-drain layer 119 may include a source 1191 and a drain 1192. The source 1191 and the drain 1192 are spaced apart from each other and may be respectively connected to the semiconductor layer 115 through vias. Along the direction away from the substrate 101 of the source-drain layer 119, a first organic film layer 104, an anode layer 120, a light-emitting layer 121, and a cathode layer 110 are sequentially arranged. Among them, the anode layer 120, the light-emitting layer 121, and the cathode layer 110 may form a light-emitting element. The anode layer 120 may be electrically connected to the drain 1192 through a via. Among them, the gate 117, the source 1191, and the drain 1192 form a transistor, and each light-emitting element and the transistor connected thereto may form a pixel unit 102.

[0176] Refer to Figure 21It can be seen that the first power line 105 can be on the same layer as the second power line 111 and the source-drain layer 119. The first power line 105, the second power line 111, and the source-drain layer 119 can include three film layers. For example, the materials of the three film layers can be, in sequence: titanium (Ti), aluminum (Al), and Ti.

[0177] In summary, the embodiment of the present application provides a display substrate. For the segment of the first power line in the display substrate covered by the blocking structure, the length of the side is relatively large, which can extend the path for water vapor or oxygen to enter through the first power line, and prevent water vapor or oxygen from being introduced into the pixel unit. Moreover, since the part with a relatively large side length of the segment of the first power line is covered by the blocking structure, it can prevent the first power line from being corroded due to a relatively long exposed segment of the first power line, ensure the quality of the first power line, and further ensure the yield of the display substrate and improve the display effect of the display device.

[0178] Figure 22 is a schematic structural diagram of a display device provided by an embodiment of the present application. Refer to Figure 22 , the display device can include a power supply driving circuit 20 and a display substrate 10 provided as in the above embodiment.

[0179] The power supply driving circuit 20 can be connected to at least one first power line 105 in the display substrate 10 to provide a first power signal for the first power line 105. The first power line 105 can be used to provide the first power signal from the power supply driving circuit 20 to the pixel unit 102 connected thereto. By way of example, Figure 22 shows two first power lines 105, and the power supply driving circuit 20 can be connected to both of the two first power lines 105.

[0180] Optionally, refer to Figure 22 , the display device can further include a gate driving circuit 30 and a source driving circuit 40. The gate driving circuit 30 can be connected to each row of pixel units 102 in the display substrate 10 through a gate line to provide a gate driving signal for each row of pixel units 102. The source driving circuit 40 can be connected to each column of pixel units 102 in the display substrate 10 through a data line to provide a data signal for each column of pixel units 102.

[0181] In an embodiment of the present application, the display device may be any product or component with a display function, such as a liquid crystal display device, an electronic paper, a passive-matrix organic light-emitting diode (PMOLED) display device, an active-matrix organic light-emitting diode (AMOLED) display device, a mobile phone, a tablet computer, a television set, a monitor, a laptop computer, a digital photo frame, or a navigator, etc.

[0182] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A display substrate, characterized in that, the display substrate includes: a substrate, the substrate having a display area; a plurality of pixel units, the plurality of pixel units being located in the display area; a barrier structure, the barrier structure surrounding the display area; a first organic film layer, the first organic film layer being located on one side of the substrate, and there being a gap between the orthographic projection of the first organic film layer on the substrate and the orthographic projection of the barrier structure on the substrate; and at least one first power line located on the side of the first organic film layer close to the substrate, one end of the first power line being located on the side of the barrier structure away from the display area for receiving a first power signal, the other end of the first power line being located on the side of the barrier structure close to the display area and connected to the plurality of pixel units; wherein, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the side of the line segment of the first power line covered by a virtual barrier structure of the same width, the extending direction of the virtual barrier structure is parallel to the extending direction of the barrier structure, the side of the portion of the first power line covered by the barrier structure forms a broken line in the orthographic projection on the substrate, and two adjacent line segments in the broken line are perpendicular to each other, among the line segments of the first power line covered by the barrier structure, the line width of the portion close to the display area is greater than the line width of the portion away from the display area; the side of the portion of the first power line covered by the barrier structure is stepped.

2. The display substrate according to claim 1, characterized in that, a plurality of first protrusion structures located on the side of the first power line.

3. The display substrate according to claim 2, characterized in that, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of one of the first protrusion structures.

4. The display substrate according to claim 2, characterized in that, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the first protrusion structure covered by the virtual barrier structure.

5. The display substrate according to claim 2, characterized in that, the orthographic projection of the first protrusion structure on the substrate does not overlap with the orthographic projection of the first organic film layer on the substrate, and the orthographic projection of the first protrusion structure on the substrate does not overlap with the orthographic projection of the barrier structure on the substrate.

6. The display substrate according to any one of claims 1 to 5, characterized in that, the length of the side of the line segment of the first power line covered by the barrier structure is greater than the length of the side of the line segment of the first power line covered by the virtual barrier structure at any position.

7. The display substrate according to any one of claims 1 to 5, characterized in that, The length of the side of the segment of the first power supply line covered by the first organic film layer is greater than the length of the side of the segment of the first power supply line covered by a virtual first organic film layer with the same width, and the extending direction of the virtual first organic film layer is parallel to the extending direction of the first organic film layer.

8. The display substrate according to claim 7, wherein, In the segment of the first power supply line covered by the first organic film layer, the line width of the part located within the region surrounded by the blocking structure is greater than the line width of the part located outside the region surrounded by the blocking structure.

9. The display substrate according to any one of claims 1 to 5, wherein, The difference between the length of the side of the segment of the first power supply line covered by the blocking structure and the length of the side of the segment of the first power supply line covered by the virtual blocking structure is greater than 400 microns.

10. The display substrate according to any one of claims 1 to 5, wherein, The length of the side of the segment of the first power supply line covered by the blocking structure is greater than 5 times the width of the blocking structure.

11. The display substrate according to any one of claims 1 to 5, wherein, The blocking structure includes: a first blocking dam and a second blocking dam; The first blocking dam is farther from the display area than the second blocking dam, and the thickness of the first blocking dam is greater than the thickness of the second blocking dam.

12. The display substrate according to claim 11, wherein, The width of the first blocking dam is greater than or equal to a first width threshold, and the width of the second blocking dam is greater than or equal to a second width threshold.

13. The display substrate according to claim 12, wherein, The first distance along the extending direction of the first power supply line between the first blocking dam and the second blocking dam is greater than or equal to a first distance threshold.

14. The display substrate according to claim 13, wherein, The first width threshold, the second width threshold, and the first distance threshold are all 40 microns.

15. The display substrate according to claim 11, wherein, The first power supply line includes: a first segment and a second segment; Wherein, the first segment is farther from the display area than the second segment, the first segment is covered by the first blocking dam, the second segment is covered by the second blocking dam, the length of the side of the first segment is greater than the length of the side of the segment of the first power supply line covered by the virtual blocking structure, and the length of the side of the second segment is greater than the length of the side of the segment of the first power supply line covered by the virtual blocking structure.

16. The display substrate according to claim 15, wherein, The length of the side of the first segment is 1 to 5 times the length of the side of the second segment.

17. The display substrate according to claim 11, wherein, The first blocking dam includes: a first pattern of the first organic film layer, a second pattern of the second organic film layer, and a third pattern of the third organic film layer stacked in sequence on the side away from the substrate. The second barrier includes: a fourth pattern of the second organic film layer and a fifth pattern of the third organic film layer that are sequentially stacked on a side away from the substrate.

18. The display substrate according to any one of claims 1 to 5, wherein, the display substrate further includes at least one strip-shaped extension structure, the extension structure is located on a side of the barrier structure close to the display area, and is connected to a side of the other end of one of the first power lines, and an extension direction of the extension structure is perpendicular to an extension direction of the first power line.

19. The display substrate according to any one of claims 1 to 5, wherein, the display substrate includes two of the first power lines, and the two first power lines are symmetrically arranged with respect to an axis of the substrate.

20. The display substrate according to claim 19, wherein, the other ends of the two first power lines are an integral structure.

21. The display substrate according to any one of claims 1 to 5, wherein, the display substrate further includes: a cathode layer and a second power line; the cathode layer is located on a side of the first organic film layer away from the substrate; the second power line is on the same layer as the first power line, the second power line includes a first portion and a second portion, the first portion is located on a side of the barrier structure away from the display area and is configured to receive a second power signal, the second portion surrounds the display area, and a positive projection of the second portion on the substrate overlaps a positive projection of the barrier structure on the substrate, and the second portion is connected to the cathode layer.

22. The display substrate according to claim 21, wherein, the second portion of the second power line includes: a connection portion and a surrounding portion, the connection portion is respectively connected to the first portion and the surrounding portion, and the surrounding portion surrounds the display area; the display substrate further includes: a plurality of second protrusion structures located on a side of the connection portion.

23. The display substrate according to claim 22, wherein, a positive projection of the second protrusion structure on the substrate does not overlap a positive projection of the first organic film layer on the substrate, and a positive projection of the second protrusion structure on the substrate does not overlap a positive projection of the barrier structure on the substrate.

24. The display substrate according to claim 22, wherein, a length of a side of a portion of the connection portion covered by the barrier structure is greater than a length of a side of the connection portion covered by the virtual barrier structure.

25. The display substrate according to claim 24, wherein, a positive projection of a side of a portion of the connection portion covered by the barrier structure on the substrate is a broken line, and two adjacent line segments in the broken line are perpendicular to each other.

26. The display substrate according to claim 21, wherein, The second part of the second power supply line includes a connection part and a surrounding part. The connection part is connected to the first part and the surrounding part respectively, and the surrounding part surrounds the display area. The side of the part of the connection part covered by the blocking structure has a straight-line orthographic projection on the substrate, and the straight line is parallel to the extension direction of the first power supply line. The second distance between the first power supply line and the connection part is greater than or equal to a second distance threshold, the third distance between the first power supply line and the connection part is greater than or equal to a third distance threshold, and the fourth distance between the first power supply line and the connection part is greater than or equal to a fourth distance threshold. Wherein, the second distance is the maximum distance between the line segment of the first power supply line covered by the first blocking dam in the blocking structure and the connection part in the direction perpendicular to the extension direction of the first power supply line. The third distance is the maximum distance between the line segment of the first power supply line located between the first blocking dam and the second blocking dam in the blocking structure and the connection part in the direction perpendicular to the extension direction of the first power supply line. The fourth distance is the maximum distance between the line segment of the first power supply line covered by the second blocking dam and the connection part in the direction perpendicular to the extension direction of the first power supply line. The second distance threshold is greater than the third distance threshold, and the third distance threshold is greater than the fourth distance threshold.

27. The display substrate according to claim 26, wherein, the fifth distance between the first power supply line and the connection part is greater than or equal to a fifth distance threshold, and the sixth distance between the first power supply line and the connection part is greater than or equal to a sixth distance threshold; Wherein, the fifth distance is the maximum distance between the part of the line segment of the first power supply line covered by the first organic film layer outside the area surrounded by the blocking structure and the connection part in the direction perpendicular to the extension direction of the first power supply line. The sixth distance is the maximum distance between the part of the line segment of the first power supply line covered by the first organic film layer inside the area surrounded by the blocking structure and the connection part in the direction perpendicular to the extension direction of the first power supply line. The fifth distance threshold is greater than the second distance threshold, and the sixth distance threshold is less than the fourth distance threshold.

28. The display substrate according to claim 27, wherein, the second distance threshold is 3323 microns, the third distance threshold is 2723 microns, the fourth distance threshold is 2123 microns, the fifth distance threshold is 3795 microns, and the sixth distance threshold is 1523 microns.

29. The display substrate according to claim 24, wherein, the display substrate further includes at least one strip-shaped extension structure. The extension structure is located on the side of the blocking structure close to the display area and is connected to the side of the other end of one of the first power supply lines. The extension direction of the extension structure is perpendicular to the extension direction of the first power supply line. The connection part is away from the display area relative to the extension structure.

30. The display substrate according to claim 29, wherein, the side of the portion of the first power line covered by the blocking structure has a broken line in the orthographic projection on the substrate, and the side of the line segment of the first power line covered by the first organic film layer has a broken line in the orthographic projection on the substrate; the seventh distance between the first step line and the second step line of the first power line in the extending direction of the first power line is greater than or equal to a seventh distance threshold; the eighth distance between the second step line and the third step line of the first power line in the extending direction of the first power line is greater than or equal to an eighth distance threshold; the ninth distance between the third step line and the fourth step line of the first power line in the extending direction of the first power line is greater than or equal to a ninth distance threshold; the tenth distance between the fourth step line and the extending structure in the extending direction of the first power line is greater than or equal to a tenth distance threshold; wherein, the first step line is covered by the first organic film layer outside the area surrounded by the blocking structure; the second step line is covered by the first blocking dam of the blocking structure, the third step line is covered by the second blocking dam of the blocking structure, the fourth step line is covered by the first organic film layer within the area surrounded by the blocking structure, and the first step line, the second step line, the third step line, and the fourth step line are all perpendicular to the extending direction of the first power line.

31. The display substrate according to claim 30, wherein, the seventh distance threshold is 140 microns, the eighth distance threshold is 80 microns, the ninth distance threshold is 110 microns, and the tenth distance threshold is 275 microns.

32. The display substrate according to claim 31, wherein, the eleventh distance between the extending structure and the connecting portion in the direction perpendicular to the extending direction of the extending structure is greater than an eleventh distance threshold.

33. The display substrate according to claim 32, wherein, the eleventh distance threshold is 80 microns.

34. The display substrate according to claim 21, wherein, the first organic film layer covers the first portion of the second power line, and covers the second portion of the second power line near the boundary and far from the boundary of the display area.

35. The display substrate according to claim 34, wherein, the second power line includes two of the first portions; wherein, one of the first portions is connected to one end of the second portion, and the other first portion is connected to the other end of the second portion, and the two first portions are symmetrically arranged with respect to the axis of the substrate.

36. The display substrate according to claim 35, wherein, one end of the first power line is located between the two first portions.

37. A display device, wherein, the display device includes: a power supply driving circuit and a display substrate according to any one of claims 1 to 36; The power supply driving circuit is connected to at least one first power line in the display substrate and is configured to provide a first power signal to the first power line.

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