Indicates substrate

Abstract

The present disclosure provides a display substrate and a touch display device, the display substrate including a base substrate and a functional film layer disposed on the base substrate, the functional film layer being capable of reflecting light rays from the outside toward the functional film layer, the display substrate further including a sealing layer and a shielding layer, the shielding layer being located on the functional film layer opposite to the base substrate, the sealing layer being located between the shielding layer and the functional film layer, and an orthogonal projection of the shielding layer on the base substrate at least partially overlapping with an orthogonal projection of the functional film layer on the base substrate.

Description

[Technical Field]

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

[0002] With the continuous development of display technology, touch display products have been widely applied in many fields. The touch display products have both touch function and display function, and when the touch display product displays a screen, the function control of the touch display product can be realized by touching the screen of the touch display product. Summary of the Invention

[0003] SUMMARY OF THE INVENTION An object of the present disclosure is to provide a display substrate and a touch display device.

[0004] To achieve the above object, the present disclosure provides the following technical aspects. A first aspect of the present disclosure provides a display substrate including a base substrate and a functional film layer provided on the base substrate, the functional film layer being capable of reflecting light rays directed from the outside toward the functional film layer, the display substrate further including a sealing layer and a shielding layer, the shielding layer being located on the opposite side of the functional film layer from the base substrate, the sealing layer being located between the shielding layer and the functional film layer, and the orthogonal projection of the shielding layer on the base substrate at least partially overlapping with the orthogonal projection of the functional film layer on the base substrate.

[0005] Optionally, the display substrate includes a display area and a frame area surrounding the display area, the frame area includes a folding area, and at least a portion of the functional film layer is located between the folding area and the display area.

[0006] Optionally, the functional film layer includes at least a portion extending along a first direction; The shielding layer includes a plurality of first shielding patterns, at least a portion of which extends along a first direction, the plurality of first shielding patterns are arranged along a second direction, the second direction intersects with the first direction, and orthogonal projections of at least a portion of the first shielding patterns on the base substrate at least partially overlap with orthogonal projections of the functional film layer on the base substrate.

[0007] Optionally, the ratio of the width of the first shielding pattern perpendicular to its extension direction to the minimum distance between adjacent first shielding patterns is 3:2 or more.

[0008] Optionally, the display substrate further includes a shielding line, and at least a portion of the shielding line is located between two adjacent first shielding patterns.

[0009] Optionally, the minimum spacing between the first shielding pattern and the shield line is 4 microns or greater.

[0010] Optionally, the minimum distance between the first shielding pattern and the shield line is equal to 0.4 times the width of the first shielding pattern perpendicular to its extending direction.

[0011] Optionally, the functional film layer includes at least a portion extending along a first direction; The shielding layer includes a second shielding pattern, the second shielding pattern including a shielding main body portion and a shielding extension portion coupled to each other, the shielding main body portion extending along the first direction, and an orthogonal projection of the shielding main body portion on the base substrate at least partially overlapping with an orthogonal projection of the functional film layer on the base substrate.

[0012] Optionally, the shielding extension also serves as a shielding line for the display substrate.

[0013] Optionally, the display substrate further includes an anode layer, and the functional film layer and the anode layer are formed in the same layer and made of the same material, and the functional film layer is a positive power signal bus or a negative power signal bus on the display substrate.

[0014] Optionally, the display substrate further includes an organic layer, and an organic trench is formed in the organic layer; The shield line is located on the opposite side of the organic layer from the base substrate, and the shield line includes a first shield portion that spans the organic trench, and the extension direction of the first shield portion is perpendicular to the extension direction of the boundary of the organic trench that it spans.

[0015] Optionally, the organic layer includes a pixel-defining layer and a planarizing layer, at least a portion of the planarizing layer being located between the pixel-defining layer and the base substrate, a first organic trench being formed in the pixel-defining layer, and a second organic trench being formed in the planarizing layer, and an orthogonal projection of the first organic trench on the base substrate at least partially overlaps with an orthogonal projection of the second organic trench on the base substrate; The extension direction of the first shield portion is perpendicular to the extension direction of the boundary of the first organic trench that it spans, and is perpendicular to the extension direction of the boundary of the second organic trench that it spans.

[0016] Optionally, the display substrate further includes a plurality of touch signal lines, each of the touch signal lines including a first touch portion spanning the organic trench, and an extension direction of the first touch portion being perpendicular to an extension direction of a boundary of the organic trench it spans.

[0017] Optionally, the display substrate further includes a plurality of first dummy patterns arranged along the first direction, the first dummy patterns extending along the second direction, the first dummy patterns spanning the organic trench, and the first dummy patterns and the shielding lines being arranged in the same layer and made of the same material.

[0018] Alternatively, the plurality of first dummy patterns are divided into a plurality of first dummy pattern groups, and the plurality of first dummy pattern groups are arranged along a first direction; The plurality of touch signal lines are divided into a plurality of touch signal line groups, at least some of the touch signal line groups and the first dummy pattern groups are alternately arranged along a first direction, and at least some of the shield lines are located between adjacent touch signal line groups and first dummy pattern groups.

[0019] Optionally, at least a portion of the orthogonal projection of the organic trench on the base substrate is located between the folding area and the display region.

[0020] Optionally, the display substrate further includes a plurality of touch signal lines, the touch signal lines including a first touch portion, a second touch portion, and a third touch portion that are connected end to end in sequence, the first touch portion and the second touch portion being located in the frame region, and the third touch portion being located in the display region; A routing wiring structure is formed in the second touch portion included in at least some of the touch signal lines, and the resistances of the plurality of touch signal lines are substantially the same.

[0021] Optionally, the second touch portion includes a first receiving end, a second receiving end, and a routing structure, the routing structure is respectively coupled to the first receiving end and the second receiving end, the first receiving end is coupled to a corresponding first touch portion, and the second receiving end is coupled to a corresponding third touch portion; The first receiving end includes at least a portion that extends along a second direction, and the second receiving end includes at least a portion that extends along the second direction.

[0022] Optionally, the plurality of second receiving ends included in the plurality of touch signal lines are arranged along a first direction, and a dummy routing wiring structure is provided between at least some of the plurality of second receiving ends adjacent to each other.

[0023] Optionally, the width of the second receiving end perpendicular to its extending direction is three times the line width of the wiring structure.

[0024] Optionally, the touch signal line and the shielding layer are provided in the same layer and made of the same material.

[0025] Based on the technical aspects of the display substrate, a second aspect of the present disclosure provides a touch display device including the display substrate.

[0026] The drawings described herein are intended to provide a further understanding of the present disclosure and constitute a part of the present disclosure, and the illustrative embodiments of the present disclosure and the description thereof are intended to interpret the present disclosure and do not constitute undue limitations on the present disclosure. [Brief explanation of the drawings]

[0027] [Figure 1] FIG. 2 is a structural schematic diagram of a lower frame of a display substrate according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is an enlarged schematic view of a partial structure in the X1 portion of FIG. [Figure 3] FIG. 2 is an enlarged schematic view of another structure used at the location of part X1 in FIG. 1. [Figure 4] FIG. 2 is an enlarged schematic view of a partial structure in the X2 portion of FIG. [Figure 5] FIG. 2 is an enlarged schematic view of a partial structure in the X3 portion of FIG. [Figure 6] FIG. 2 is an enlarged schematic view of a partial structure at part X4 in FIG. [Figure 7] FIG. 2 is a first schematic cross-sectional view of a display structure portion of a display substrate according to an embodiment of the present disclosure. [Figure 8] FIG. 2 is a second schematic cross-sectional view of a display structure portion of a display substrate according to an embodiment of the present disclosure. [Figure 9] 1 is a schematic planar structure diagram of a display substrate according to an embodiment of the present disclosure; [Figure 10] 3 is a structural schematic diagram of a touch electrode layer included in a touch structure portion of a display substrate according to an embodiment of the present disclosure; FIG. [Figure 11] FIG. 2 is a circuit structure diagram of a sub-pixel driving circuit in an LTPS mode on a display substrate according to an embodiment of the present disclosure. [Figure 12] FIG. 10 is a schematic layout diagram of a sub-pixel driving circuit in an LTPS mode on a display substrate according to an embodiment of the present disclosure. [Figure 13] FIG. 2 is a schematic diagram illustrating the layout of LTPS mode sub-pixels on a display substrate according to an embodiment of the present disclosure. [Figure 14] FIG. 2 is a circuit structure diagram of an LTPO mode sub-pixel driving circuit on a display substrate according to an embodiment of the present disclosure. [Figure 15] FIG. 10 is a schematic layout diagram of an LTPO mode sub-pixel driving circuit on a display substrate according to an embodiment of the present disclosure. [Figure 16] FIG. 2 is a schematic diagram illustrating the layout of LTPO mode sub-pixels on a display substrate according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0028] To further describe the display substrate and the touch display device according to the embodiments of the present disclosure, detailed descriptions will be made below with reference to the accompanying drawings.

[0029] The present disclosure provides a touch display product, which includes a display area and a frame area located around the display area, and the frame area includes a functional film layer that is arranged to be the same layer and made of the same material as the anode layer in the display area, and the functional film layer can realize a signal transmission function as a signal line.

[0030] Due to limitations in the material of the functional film layer itself, when a touch display product is used in an environment exposed to strong light, the functional film layer will reflect the light irradiated onto its surface, causing light leakage in the touch display product and affecting the user experience.

[0031] 1 to 3, an embodiment of the present disclosure provides a display substrate including a base substrate and a functional film layer 10 provided on the base substrate, the functional film layer 10 being capable of reflecting light rays from the outside toward the functional film layer 10, the display substrate further including a sealing layer and a shielding layer 20, the shielding layer 20 being located on the opposite side of the functional film layer 10 from the base substrate, the sealing layer being located between the shielding layer 20 and the functional film layer 10, and the orthogonal projection of the shielding layer 20 on the base substrate at least partially overlapping with the orthogonal projection of the functional film layer 10 on the base substrate.

[0032] For example, the functional film layer 10 is a positive power signal bus on the display substrate, which is coupled to a driving chip on the display substrate and a power line located in the display area 30 on the display substrate, respectively, so as to transmit a positive power signal supplied from the driving chip to the power line.

[0033] For example, the functional film layer 10 is a negative power supply signal bus on the display substrate, which is coupled to a driving chip on the display substrate and a cathode located in the display area 30 on the display substrate, respectively, and can transmit a negative power supply signal supplied from the driving chip to the cathode.

[0034] Exemplarily, the display substrate further includes a sealing layer, and the functional film layer 10 is disposed between the sealing layer and the base substrate and is covered by the sealing layer. The shielding layer 20 is located on one side of the sealing layer, opposite to the side of the functional film layer 10 opposite to the base substrate, and the orthogonal projection of the shielding layer 20 on the base substrate at least partially overlaps with the orthogonal projection of the functional film layer 10 on the base substrate. Exemplarily, the orthogonal projection of the shielding layer 20 on the base substrate completely covers the orthogonal projection of the functional film layer 10 on the base substrate.

[0035] As can be seen from the specific structure of the above display substrate, in the display substrate according to the embodiment of the present disclosure, a shielding layer 20 is provided on the opposite side of the sealing layer from the base substrate, and the orthogonal projection of the shielding layer 20 on the base substrate is configured to at least partially overlap with the orthogonal projection of the functional film layer 10 on the base substrate. Therefore, when external light rays head toward the functional film layer 10, they can be blocked by the shielding layer 20, preventing the light rays from hitting the functional film layer 10 and being reflected by the functional film layer 10. As a result, light leakage phenomenon occurring on the display substrate during actual application, which would affect the user experience, is avoided.

[0036] As shown in Figures 1 to 3, in some embodiments, the display substrate includes a display area 30 and a frame area 31 surrounding the display area 30, the frame area 31 includes a folding area 310, and at least a portion of the functional film layer 10 is located between the folding area 310 and the display area 30.

[0037] For example, the folding area 310 is located at the bottom edge of the display substrate, and the functional film layer 10 is located at the bottom edge of the display substrate, but is not limited thereto.

[0038] For example, the functional film layer 10 may be located on the top frame, left frame or right frame of the display substrate. When the functional film layer 10 is located on the top frame, left frame or right frame, the shielding layer 20 can be similarly provided to shield the functional film layer 10 and avoid light leakage problems caused by light reflection by the functional film layer 10.

[0039] As shown in FIGS. 1 and 2, in some embodiments, the functional film layer 10 includes at least a portion extending along a first direction, The shielding layer 20 includes a plurality of first shielding patterns 201, at least a portion of which extends along a first direction, the plurality of first shielding patterns 201 are arranged along a second direction, the second direction intersects with the first direction, and the orthogonal projection of at least a portion of the first shielding patterns 201 on the base substrate at least partially overlaps with the orthogonal projection of the functional film layer 10 on the base substrate.

[0040] Exemplarily, the first direction includes a horizontal direction, and the second direction includes a vertical direction, but is not limited thereto.

[0041] For example, the functional film layer 10 includes a plurality of first shielding patterns 201, and the first shielding patterns 201 may be strip-shaped patterns extending along a first direction, but are not limited thereto.

[0042] Exemplarily, the orthogonal projection of the first shielding pattern 201 on the base substrate is covered by the orthogonal projection of the functional film layer 10 on the base substrate.

[0043] As described above, by configuring the shielding layer 20 to include the plurality of first shielding patterns 201, the layout difficulty of the shielding layer 20 can be effectively reduced while ensuring the shielding effect of the shielding layer 20.

[0044] In some embodiments, the ratio of the width of the first shielding pattern 201 perpendicular to its extension direction to the minimum distance between adjacent first shielding patterns 201 is 3:2 or greater.

[0045] In some embodiments, the width of the first shielding pattern 201 perpendicular to its extension direction is between 8 microns and 10 microns, including end values. Illustratively, the width of the first shielding pattern 201 perpendicular to its extension direction is 9 microns.

[0046] 1 and 2, in some embodiments, the minimum spacing between adjacent first shielding patterns 201 may be between 5 microns and 9 microns, including end values. Illustratively, the minimum spacing between adjacent first shielding patterns 201 may be 6 microns, 7 microns, or 8 microns.

[0047] By arranging the plurality of first shielding patterns 201 as described above, the layout difficulty of the shielding layer 20 can be effectively reduced while ensuring the shielding effect of the shielding layer 20 .

[0048] As shown in FIGS. 1 and 2, in some embodiments, the display substrate further includes a shielding line 40, at least a portion of which is located between two adjacent first shielding patterns 201.

[0049] Exemplarily, the shielded wire 40 includes a first shielding portion 401 and a second shielding portion 402 coupled to each other, the first shielding portion 401 including at least a portion extending along the second direction, and the second shielding portion 402 including at least a portion extending along the first direction. Exemplarily, the first shielding portion 401 and the second shielding portion 402 are formed as an integral structure, and the second shielding portion 402 is located between two adjacent first shielding patterns 201.

[0050] Exemplarily, the first shield portion 401 is coupled to a driver chip on the display substrate and receives a ground signal provided by the driver chip.

[0051] Illustratively, the orthogonal projection of the shielding wire 40 on the base substrate at least partially overlaps with the orthogonal projection of the functional film layer 10 on the base substrate, and the shielding wire 40 and the shielding layer 20 are arranged to be in the same layer and made of the same material.

[0052] For example, the display substrate includes two shielded wires 40, which are arranged in a mirror image, and a gap is provided between the two second shield portions 402 included in the two shielded wires 40.

[0053] As described above, by configuring at least a portion of the shielding line 40 to be located between two adjacent first shielding patterns 201, crosstalk occurring between different structures of the display substrate in the frame region 31 can be effectively reduced.

[0054] As shown in FIGS. 1 and 2, in some embodiments, the minimum spacing between the first shielding pattern and the shield line is 4 microns or more.

[0055] As shown in FIGS. 1 and 2, in some embodiments, the minimum spacing between the first shielding pattern and the shielding line is equal to 0.4 times the width of the first shielding pattern perpendicular to its extension direction.

[0056] For example, when 0.4 times the width of the first shielding pattern perpendicular to its extension direction is less than 4 microns, the minimum spacing between the first shielding pattern and the shield line is 4 microns or more.When 0.4 times the width of the first shielding pattern perpendicular to its extension direction is 4 microns or more, the minimum spacing between the first shielding pattern and the shield line is equal to 0.4 times the width of the first shielding pattern perpendicular to its extension direction.

[0057] 1 and 2, in some embodiments, the minimum spacing between the first shielding pattern 201 and the shield line 40 is between 4 microns and 6 microns, including end points. Illustratively, the minimum spacing between the first shielding pattern 201 and the shield line 40 is 5 microns.

[0058] By laying out the space between the first shielding pattern 201 and the shielding line 40 as described above, the layout difficulty of the shielding layer 20 and the shielding layer can be effectively reduced while ensuring the shielding effect of the shielding layer 20 and the shielding layer.

[0059] As shown in FIGS. 1 and 3, in some embodiments, the functional film layer 10 includes at least a portion extending along a first direction, The shielding layer 20 includes a second shielding pattern 202, which includes a shielding main body portion 2021 and a shielding extension portion 2022 coupled to each other, the shielding main body portion 2021 extending along the first direction, and the orthogonal projection of the shielding main body portion 2021 on the base substrate at least partially overlaps with the orthogonal projection of the functional film layer 10 on the base substrate.

[0060] Exemplarily, the shielding body 2021 and the shielding extension 2022 are formed as an integral structure. The shielding body 2021 extends along the first direction, and the shielding extension 2022 includes at least a portion extending along the second direction. The second shielding pattern 202 includes two shielding extensions 2022, and both ends of the shielding body 2021 are respectively coupled to the two shielding extensions 2022 in a one-to-one correspondence.

[0061] In the display substrate according to the above embodiment, the orthogonal projection of the shielding main body portion 2021 on the base substrate is configured to at least partially overlap with the orthogonal projection of the functional film layer 10 on the base substrate, thereby reducing the resistance of the shielding layer 20 and more effectively realizing the light-blocking effect of the shielding layer 20.

[0062] As shown in FIGS. 1 and 3, in some embodiments, the shielding extension 2022 also serves as a shielding line 40 on the display substrate.

[0063] Exemplarily, the shielding extension 2022 is coupled to a driver chip included in the display substrate and receives a ground signal supplied from the driver chip.

[0064] As described above, by using the shielding extension 2022 also as the shielding line 40 on the display substrate, not only is the light-shielding effect of the shielding layer 20 ensured, but also crosstalk between the shielding layer 20 and other conductive structures due to the shielding layer 20 being in a floating state is prevented from occurring. Furthermore, there is no need to provide a separate shielding line 40 dedicated to shielding on the display substrate, which reduces the difficulty of layout of the display substrate.

[0065] In some embodiments, the display substrate further includes an anode layer, and the functional film layer 10 and the anode layer are formed in the same layer and made of the same material, and the functional film layer 10 is used as a positive power signal bus or a negative power signal bus on the display substrate.

[0066] For example, the anode layer is made of indium tin oxide, and the functional film layer 10 and the anode layer are formed in the same layer using the same material, and the functional film layer 10 and the anode layer can be simultaneously formed in the same patterning process. The functional film layer 10 may be, but is not limited to, a positive power signal bus or a negative power signal bus on the display substrate.

[0067] As shown in FIGS. 1, 4 and 5, in some embodiments, the display substrate further includes an organic layer, and an organic trench 50 is formed in the organic layer; The shield line 40 is located on the opposite side of the organic layer from the base substrate, and the shield line 40 includes a first shield portion 401 that spans the organic trench 50, and the extension direction of the first shield portion 401 is perpendicular to the extension direction of the boundary of the organic trench 50 that it spans.

[0068] For example, the organic layer is located between the base substrate and the encapsulation layer. The encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer, which are sequentially stacked. Because the organic trench 50 formed in the organic layer is deep, the organic encapsulation layer cannot fill the organic trench 50 evenly. As a result, a step exists on the surface of the encapsulation layer opposite the base substrate in the region where the organic trench 50 is located.

[0069] For example, the shield line 40 is located on the opposite side of the encapsulation layer from the base substrate, and a first shield portion 401 of the shield line 40 can straddle the organic trench 50 .

[0070] In the display substrate according to the above embodiment, the extension direction of the first shield portion 401 is configured to be perpendicular to the extension direction of the boundary of the organic trench 50 that it spans. This minimizes the contact area between the first shield portion 401 and the step surface formed by the organic trench 50 that it spans at the boundary of the organic trench 50 that it spans. As a result, during the process of forming the first shield portion 401 using a patterning process, the residue of the first shield portion 401 that occurs at the step surface is effectively reduced, and the risk of short-circuiting between the first shield portion 401 and other conductive structures in its vicinity is reduced.

[0071] In some embodiments, the organic layer comprises a pixel-defining layer and a planarizing layer, at least a portion of the planarizing layer being located between the pixel-defining layer and the base substrate, a first organic trench being formed in the pixel-defining layer, and a second organic trench being formed in the planarizing layer, and an orthogonal projection of the first organic trench on the base substrate at least partially overlaps with an orthogonal projection of the second organic trench on the base substrate; The extension direction of the first shield portion 401 is perpendicular to the extension direction of the boundary of the first organic trench that it spans, and is perpendicular to the extension direction of the boundary of the second organic trench that it spans.

[0072] Illustratively, the combined depth of the first organic trench and the second organic trench can be between 3 microns and 3.5 microns, inclusive.

[0073] Exemplarily, at least a portion of the planar layer is located between the pixel defining layer and the base substrate, and at least a portion of the anode layer included in the display substrate is located between the pixel defining layer and the planar layer.

[0074] Illustratively, the orthogonal projection of the first organic trench on the base substrate at least partially overlaps with the orthogonal projection of the second organic trench on the base substrate, forming a step of about 3 microns between the two organic trenches, which cannot be filled flat by the organic sealing layer.

[0075] In the display substrate according to the above embodiment, the extension direction of the first shield portion 401 is configured to be perpendicular to the extension direction of the boundary of the first organic trench that it spans, and perpendicular to the extension direction of the boundary of the second organic trench that it spans. This minimizes the contact area between the first shield portion 401 and the step surface formed by the first organic trench that it spans, at the boundary of the first organic trench that it spans and the boundary of the second organic trench, and also minimizes the contact area between the first shield portion 401 and the step surface formed by the second organic trench that it spans. As a result, during the process of forming the first shield portion 401 using a patterning process, the residue of the first shield portion 401 that occurs at the step surface is effectively reduced, and the risk of short-circuiting between the first shield portion 401 and other conductive structures in its vicinity is reduced.

[0076] As shown in FIGS. 1, 4 and 5, in some embodiments, the display substrate further includes a plurality of touch signal lines 60, each of which includes a first touch portion 601 spanning the organic trench 50, and the extension direction of the first touch portion 601 is perpendicular to the extension direction of the boundary of the organic trench 50 it spans.

[0077] Exemplarily, the touch signal line 60 is located on the opposite side of the encapsulation layer from the base substrate and is used to transmit touch signals.

[0078] For example, the touch signal line 60 may extend from the display area 30 of the display substrate to the lower frame area of ​​the display substrate, and a first touch portion 601 included in the touch signal line 60 is located in the lower frame area.

[0079] In the display substrate according to the above embodiment, the extension direction of the first touch portion 601 is configured to be perpendicular to the extension direction of the boundary of the organic trench 50 that it spans. This can minimize the contact area between the first touch portion 601 and the step surface formed by the organic trench 50 that it spans at the boundary of the organic trench 50 that it spans. Therefore, during the process of forming the touch signal line 60 using a patterning process, the residue of the first touch portion 601 that occurs at the step surface is effectively reduced, and the risk of short circuit between the first touch portion 601 and other conductive structures in its vicinity is reduced.

[0080] As shown in Figures 1, 4 and 5, in some embodiments, the display substrate further includes a plurality of first dummy patterns 70 arranged along the first direction, the first dummy patterns 70 extend along the second direction, the first dummy patterns 70 straddle the organic trenches 50, and the first dummy patterns 70 and the shielding lines 40 are arranged in the same layer and made of the same material.

[0081] For example, the first dummy pattern 70, the touch signal line 60, the shielding line 40, and the shielding layer 20 may be formed in the same layer and made of the same material, and may be simultaneously formed in the same patterning process, thereby effectively simplifying the manufacturing process of the display substrate and reducing the manufacturing cost of the display substrate.

[0082] In the display substrate according to the above embodiment, the first dummy patterns 70 are configured to straddle the organic trenches 50, thereby increasing the contact area between the film layer on which the first dummy patterns 70, the touch signal lines 60, the shielding lines 40, and the shielding layer 20 are located and the underlying film layer, thereby increasing the adhesive strength between the film layer on which the touch signal lines 60, the shielding lines 40, and the shielding layer 20 are located and the underlying film layer, and improving the yield of the display substrate.

[0083] As shown in FIG. 1 , in some embodiments, the plurality of first dummy patterns 70 are divided into a plurality of first dummy pattern groups 70-Z, and the plurality of first dummy pattern groups 70-Z are arranged along a first direction; The plurality of touch signal lines 60 are divided into a plurality of touch signal line groups 60-Z, at least a portion of the touch signal line groups 60-Z and the first dummy pattern groups 70-Z are alternately arranged along a first direction, and at least a portion of the shield line 40 is located between the adjacent touch signal line groups 60-Z and the first dummy pattern groups 70-Z.

[0084] Exemplarily, the plurality of first dummy patterns 70 are divided into a plurality of first dummy pattern groups 70-Z, and each of the first dummy pattern groups 70-Z includes a plurality of first dummy patterns 70 arranged along a first direction. The plurality of touch signal lines 60 are divided into a plurality of touch signal line groups 60-Z, and each of the touch signal line groups 60-Z includes a plurality of touch signal lines 60 arranged along the first direction.

[0085] In the display substrate according to the above embodiment, at least a portion of the touch signal line group 60-Z and the first dummy pattern group 70-Z are alternately arranged along a first direction, and at least a portion of the shield line 40 is configured to be located between the adjacent touch signal line group 60-Z and the first dummy pattern group 70-Z. This allows the shield line 40 to effectively shield the first dummy pattern 70 from interfering with the touch signal lines 60, thereby ensuring the accuracy of touch signal transmission by the touch signal lines 60.

[0086] As shown in FIG. 1, in some embodiments, at least a portion of the orthogonal projection of the organic trench 50 on the base substrate is located between the folding area 310 and the display area 30 .

[0087] Exemplarily, the display substrate further includes a barrier structure 51, and the orthogonal projection of the barrier structure 51 on the base substrate is located between the orthogonal projection of the organic trench 50 on the base substrate and the display area 30.

[0088] As shown in FIGS. 1 and 6 , in some embodiments, the display substrate further includes a plurality of touch signal lines 60, and the touch signal lines 60 include a first touch portion 601, a second touch portion 602, and a third touch portion 603 that are connected end to end in sequence, where the first touch portion 601 and the second touch portion 602 are located in the frame area 31, and the third touch portion 603 is located in the display area 30; A routing structure 6023 is formed in the second touch portion 602 included in at least some of the touch signal lines 60, and the resistances of the plurality of touch signal lines 60 are substantially the same.

[0089] The specific structure of the wiring structure 6023 may vary. For example, the wiring structure 6023 includes a plurality of straight side portions 6023a and a plurality of bend portions 6023b, the straight side portions 6023a extend along the first direction, the bend portions 6023b extend along the second direction, the straight side portions 6023a are sequentially arranged along the second direction, and the straight side portions 6023a are sequentially connected end to end. Two connected straight side portions 6023a are connected to each other through the bend portions 6023b, so that the wiring structure 6023 has an approximately arch-shaped structure.

[0090] For example, the routing wiring structure 6023 formed on the second touch portion 602 of each of the touch signal lines 60 may be the same or different, that is, the length of the second touch portion 602 of each of the touch signal lines 60 may be the same or different.

[0091] For example, the resistance of the second touch portion 602 can be adjusted by adjusting the length of the routing wiring of the routing wiring structure 6023 included in the second touch portion 602, and thus the resistance of the touch signal line 60 can be adjusted.

[0092] In the display substrate according to the above embodiment, the second touch portion 602 of at least some of the touch signal lines 60 is configured to have a routing structure 6023 formed therein. By adjusting the routing length of the routing structure 6023 included in the second touch portion 602 of each touch signal line 60, the overall resistance of each touch signal line 60 can be adjusted, so that the resistance characteristics of the multiple touch signal lines 60 on the display substrate are made the same, and the accuracy of touch signal transmission on the display substrate is effectively improved.

[0093] The display substrate according to the above embodiment can be applied to a watch FSLOC (flexible single layer on cell) product, and can overcome the problem that the resistance compensation of the touch signal line cannot be realized due to the insufficient space at the bottom frame of the watch FSLOC product. The watch FSLOC product may be a self-capacitance touch product.

[0094] 1 and 6 , in some embodiments, the second touch portion 602 includes a first receiving end 6021, a second receiving end 6022, and a routing structure 6023, the routing structure 6023 is respectively coupled to the first receiving end 6021 and the second receiving end 6022, the first receiving end 6021 is coupled to the corresponding first touch portion 601, and the second receiving end 6022 is coupled to the corresponding third touch portion 603; The first receiving end 6021 includes at least a portion that extends along a second direction, and the second receiving end 6022 includes at least a portion that extends along the second direction.

[0095] As shown in FIG. 6, exemplarily, the first receiving end 6021, the second receiving end 6022 and the wiring structure 6023 are formed as an integral structure.

[0096] Illustratively, in each of the touch signal lines 60, the lengths of the second receiving ends 6022 included in the second touch portions 602 may be the same or different.

[0097] As shown in FIG. 6, for example, the first receiving end 6021 and the second receiving end 6022 belonging to the same touch signal line 60 are offset along the first direction.

[0098] In the display substrate according to the above embodiment, the second touch portion 602 is configured to include the first receiving end 6021, the second receiving end 6022, and the routing wiring structure 6023, thereby making better use of the layout space of the lower frame of the display substrate and effectively reducing the layout difficulty of the touch signal line 60 in the lower frame area.

[0099] As shown in FIG. 6, in some embodiments, the plurality of second receiving ends 6022 included in the plurality of touch signal lines 60 are arranged along a first direction, and a dummy routing wiring structure 71 is provided between at least some of the adjacent second receiving ends 6022 among the plurality of second receiving ends 6022.

[0100] Illustratively, the dummy routing wiring structure 71 includes a plurality of second dummy patterns 710, which extend along the first direction, and which are arranged along the second direction.

[0101] 1 and 6, the dummy routing wiring structure 71 is exemplarily insulated from the touch signal line 60. The dummy routing wiring structure 71 and the touch signal line 60 are provided in the same layer and made of the same material.

[0102] In the display substrate according to the above embodiment, the provision of the dummy routing wiring structure 71 is advantageous in preventing light leakage in the lower frame region of the display substrate, and also ensures better etching uniformity when forming the touch signal lines 60.

[0103] As shown in FIG. 6, in some embodiments, the width of the second receiving end 6022 perpendicular to its extending direction is three times the line width of the wiring structure.

[0104] 6, in some embodiments, the width of the second receiving end 6022 perpendicular to its extending direction is between 8 microns and 12 microns. It should be noted that T21, T22, T23, T24, and T25 shown in FIG. 6 are reference symbols of the touch signal lines 60.

[0105] Illustratively, the width of the second receiving end 6022 perpendicular to its extension direction includes, but is not limited to, 8 microns, 9 microns, 10 microns, 11 microns, and 12 microns.

[0106] If the second receiving end is provided in accordance with the above dimensions, it is advantageous to prevent the occurrence of problems of electrostatic breakdown due to the accumulation of static electricity.

[0107] As shown in FIGS. 1, 2 and 6, in some embodiments, the touch signal line 60 and the shielding layer 20 are provided in the same layer and made of the same material.

[0108] Exemplarily, the display substrate includes a touch electrode layer, the touch electrode layer includes a first conductive layer and a second conductive layer, the first conductive layer is used to form a touch electrode, and the second conductive layer is used to form an electrode connection bridge.

[0109] For example, the touch signal line 60 and the shielding layer 20 are both provided in the same layer and made of the same material as the first conductive layer.

[0110] For example, the touch signal line 60 and the shielding layer 20 are both formed in the same layer and made of the same material as the second conductive layer.

[0111] For example, the touch signal line 60 and the shielding layer 20 each include a two-layer structure, one of which is formed in the same layer and made of the same material as the first conductive layer, and the other of which is formed in the same layer and made of the same material as the second conductive layer.

[0112] For example, the first conductive layer and the second conductive layer each have a three-layer stack structure of Ti / Al / Ti.

[0113] In the display substrate according to the above embodiment, the touch signal lines 60 and the shielding layer 20 are formed in the same layer and made of the same material, so that the touch signal lines 60 and the shielding layer 20 can be formed simultaneously through the same patterning process, which effectively simplifies the manufacturing process of the display substrate and reduces the manufacturing cost of the display substrate.

[0114] 7, the display substrate includes a display structure portion and a touch structure portion. Exemplarily, the display structure portion includes a stacked light-shielding metal layer SEL, a first insulating layer (not shown), an active layer (not shown), a first gate insulating layer GI1, a first gate metal layer Gate1, a second gate insulating layer GI2, a second gate metal layer Gate2, an interlayer insulating layer ILD, a first source-drain metal layer SD1, a first planar layer PLN1, an anode layer ANO, a pixel defining layer PDL, a light-emitting functional layer EL, a cathode layer CAT, and an encapsulation layer TFE. The touch structure portion includes a stacked inorganic layer TBU, a second conductive layer (for forming an electrode connection bridge BR), a second insulating layer IN, a first conductive layer (for forming touch electrodes Rxo and Txc), and a third planar layer TOC.

[0115] 8, the display structure portion may use a two-layer source / drain metal layer structure, that is, the display structure portion includes a stacked light-shielding metal layer SEL, a first insulating layer (not shown), an active layer (not shown), a first gate insulating layer GI1, a first gate metal layer Gate1, a second gate insulating layer GI2, a second gate metal layer Gate2, an interlayer insulating layer ILD, a first source / drain metal layer SD1, a first planar layer PLN1, a second source / drain metal layer SD2, a second planar layer PLN2, an anode layer ANO, a pixel defining layer PDL, a light-emitting functional layer EL, a cathode layer CAT, and an encapsulation layer TFE. The touch structure portion includes a stacked inorganic layer TBU, a second conductive layer (for forming an electrode connection bridge BR), a second insulating layer IN, a first conductive layer (for forming touch electrodes Rxo and Txc), and a third planar layer TOC.

[0116] As shown in FIG. 9 , the display substrate includes a display area 30 and a frame area 31, and the orthogonal projection of the touch electrode layer of the display substrate in the touch structure portion on the base substrate is located in the display area, and the orthogonal projection of the touch signal line 60 in the touch structure portion on the base substrate and the orthogonal projection of the shielding layer 20 on the base substrate are located in the frame area 31.

[0117] As shown in Figure 10, this figure is a schematic plan view of a touch electrode layer according to an embodiment of the present disclosure. The orthogonal projection of the touch electrode layer shown in Figure 10 on the base substrate is located in the display area 30 in Figure 9. The touch electrode layer shown in Figure 10 uses self-capacitance touch technology.

[0118] In the display substrate according to the embodiment of the present disclosure, the display structure portion includes a plurality of sub-pixels, each of which includes a sub-pixel driving circuit and a light-emitting element coupled to each other, and the sub-pixel driving circuit is used to supply a driving signal to the light-emitting element to drive the light-emitting element to emit light, thereby realizing the display function of the display substrate.

[0119] The sub-pixel driving circuit can use LTPS and LTPO modes, and these two modes will be described below.

[0120] As shown in FIGS. 11 to 13, the subpixel driving circuit uses the LTPS mode.

[0121] The sub-pixel driving circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7 and a storage capacitor Cst.

[0122] The display substrate includes a power supply line VDD, a data line DA, a gate line GA, a light emitting control line EM, a first reset line RE1, a second reset line RE2, a first initialization signal line Vinit1, and a second initialization signal line Vinit2.

[0123] The gate of the first transistor T1 is coupled to a corresponding first reset line RE1, a first electrode of the first transistor T1 is coupled to a corresponding first initialization signal line Vinit1, and a second electrode of the first transistor T1 is coupled to a gate of the third transistor T3 (i.e., a first node N1). The gate of the third transistor T3 also serves as a first electrode of a storage capacitor Cst, and a second electrode of the storage capacitor Cst is coupled to a power supply line VDD.

[0124] The gate of the second transistor T2 is coupled to a corresponding gate line GA, the first pole of the second transistor T2 is coupled to the second pole (i.e., the second node N2) of the third transistor T3 (i.e., the driving transistor), and the second pole of the second transistor T2 is coupled to the gate of the third transistor T3.

[0125] The gate of the fourth transistor T4 is coupled to a corresponding gate line GA, the first pole of the fourth transistor T4 is coupled to a corresponding data line DA, and the second pole of the fourth transistor T4 is coupled to the first pole of the third transistor T3 (i.e., the third node N3).

[0126] A gate of the fifth transistor T5 is coupled to a corresponding light emitting control line EM, a first electrode of the fifth transistor T5 is coupled to a power supply line VDD, and a second electrode of the fifth transistor T5 is coupled to a first electrode of the third transistor T3.

[0127] The gate of the sixth transistor T6 is coupled to a corresponding light emitting control line EM, the first pole of the sixth transistor T6 is coupled to the second pole of the third transistor T3, and the second pole of the sixth transistor T6 is coupled to the anode of the light emitting element LD (i.e., the fourth node N4).

[0128] The gate of the seventh transistor T7 is coupled to a second reset line RE2, a first electrode of the seventh transistor T7 is coupled to the second initialization signal line Vinit2, and a second electrode of the seventh transistor T7 is coupled to an anode of the light-emitting element LD, and a cathode of the light-emitting element LD receives a negative power supply signal VSS.

[0129] When the sub-pixel driving circuit with the above structure operates, each operation period includes a first reset period, a write compensation period, a second reset period and a light emitting period.

[0130] During the first reset period, the reset signal input from the first reset line RE1 is at an active level, the first transistor T1 is turned on, and the first initialization signal transmitted by the first initialization signal line Vinit1 is input to the gate of the third transistor T3, thereby clearing the gate-source voltage Vgs held in the third transistor T3 in the previous frame to zero and realizing resetting of the gate of the third transistor T3.

[0131] During the write compensation period, the reset signal is at an inactive level, so that the first transistor T1 is turned off; the gate scanning signal input from the gate line GA is at an active level, so that the second transistor T2 and the fourth transistor T4 are controlled to be turned on; a data signal is written to the data line DA and transmitted to the first electrode of the third transistor T3 via the fourth transistor T4; at the same time, the second transistor T2 and the fourth transistor T4 are turned on, so that the third transistor T3 forms a diode structure; the second transistor T2, the third transistor T3, and the fourth transistor T4 work together to achieve compensation for the threshold voltage of the third transistor T3; if the compensation time is long enough, the gate potential of the third transistor T3 can be controlled to finally reach Vdata+Vth, where Vdata represents the voltage value of the data signal, and Vth represents the threshold voltage of the third transistor T3.

[0132] During the second reset period, the gate scanning signal is at an inactive level, the second transistor T2 and the fourth transistor T4 are both turned off, the reset signal input from the second reset line RE2 (which may be the first reset line coupled to the subpixel driving circuit of the adjacent next row) is at an active level, the seventh transistor T7 is controlled to be turned on, the initialization signal input from the second initialization signal line Vinit2 is input to the anode of the light-emitting element LD, and the light-emitting element LD is controlled not to emit light.

[0133] During the light emission period, the light emission control signal written to the light emission control line EM is at an active level, and the fifth transistor T5 and the sixth transistor T6 are controlled to be on, whereby the power supply signal transmitted by the power supply line VDD is input to the first electrode of the third transistor T3, and at the same time, since the gate of the third transistor T3 is held at Vdata+Vth, the third transistor T3 is turned on, and the gate-source voltage corresponding to the third transistor T3 becomes Vdata+Vth-Vdd, where Vdd is the voltage value corresponding to the power supply signal, and the leakage current generated based on the gate-source voltage flows to the anode of the corresponding light-emitting element LD, and the corresponding light-emitting element LD is driven to emit light.

[0134] As shown in FIGS. 14 to 16, the subpixel driving circuit uses the LTPO mode.

[0135] The sub-pixel driving circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7 and a storage capacitor Cst.

[0136] The display substrate includes a power supply line VDD, a data line DA, a first gate line GA1, a second gate line GA2, a light emitting control line EM, a first reset line RE1, a first initialization signal line Vinit1, and a second initialization signal line Vinit2.

[0137] The gate of the first transistor T1 is coupled to the corresponding first reset line RE1, the first electrode of the first transistor T1 is coupled to the corresponding first initialization signal line Vinit1, and the second electrode of the first transistor T1 is coupled to the gate of the third transistor T3. The gate of the third transistor T3 also serves as a first electrode of a storage capacitor Cst, and the second electrode of the storage capacitor Cst is coupled to the power supply line VDD.

[0138] The gate of the second transistor T2 is coupled to a corresponding second gate line GA2, the first pole of the second transistor T2 is coupled to the second pole of the third transistor T3, and the second pole of the second transistor T2 is coupled to the gate of the third transistor T3.

[0139] A gate of the fourth transistor T4 is coupled to a corresponding first gate line GA1, a first pole of the fourth transistor T4 is coupled to a corresponding data line DA, and a second pole of the fourth transistor T4 is coupled to a first pole of the third transistor T3.

[0140] A gate of the fifth transistor T5 is coupled to a corresponding light emitting control line EM, a first electrode of the fifth transistor T5 is coupled to a power supply line VDD, and a second electrode of the fifth transistor T5 is coupled to a first electrode of the third transistor T3.

[0141] The gate of the sixth transistor T6 is coupled to a corresponding light emitting control line EM, the first pole of the sixth transistor T6 is coupled to the second pole of the third transistor T3, and the second pole of the sixth transistor T6 is coupled to the anode of the light emitting element LD.

[0142] The gate of the seventh transistor T7 is coupled to a corresponding first gate line GA1, the first electrode of the seventh transistor T7 is coupled to the second initialization signal line Vinit2, and the second electrode of the seventh transistor T7 is coupled to the anode of the light-emitting element LD, and the cathode of the light-emitting element LD receives the negative power supply signal VSS.

[0143] The embodiments of the present disclosure further provide a touch display device, which includes a display substrate according to the above embodiments.

[0144] It should be noted that the touch display device can be any product or component with touch display function, such as a television, a display, a digital photo frame, a mobile phone, a tablet PC, etc., wherein the touch display device further includes a flexible circuit board, a printed circuit board, a backplane, etc.

[0145] In the display substrate according to the above embodiment, a shielding layer 20 is provided on the opposite side of the sealing layer from the base substrate, and the orthogonal projection of the shielding layer 20 on the base substrate is configured to at least partially overlap with the orthogonal projection of the functional film layer 10 on the base substrate. Therefore, when external light rays head toward the functional film layer 10, they can be blocked by the shielding layer 20, preventing the light rays from hitting the functional film layer 10 and being reflected by the functional film layer 10. As a result, light leakage phenomenon occurring on the display substrate during actual application, which would affect the user experience, is avoided.

[0146] In the display substrate according to the above embodiment, a shield line 40 is provided, and the extension direction of the first shield portion 401 included in the shield line 40 is configured to be perpendicular to the extension direction of the boundary of the organic trench 50 that it spans. This minimizes the contact area between the first shield portion 401 and the step surface formed by the organic trench 50 that it spans, at the boundary of the organic trench 50 that it spans. As a result, during the process of forming the first shield portion 401 using a patterning process, the residue of the first shield portion 401 that occurs at the step surface is effectively reduced, and the risk of short-circuiting between the first shield portion 401 and other conductive structures in its vicinity is reduced.

[0147] In the display substrate according to the above embodiment, the second touch portion 602 of at least some of the touch signal lines 60 is configured to have a routing structure 6023 formed therein. By adjusting the routing length of the routing structure 6023 included in the second touch portion 602 of each touch signal line 60, the overall resistance of each touch signal line 60 can be adjusted, so that the resistance characteristics of the multiple touch signal lines 60 on the display substrate are made the same, and the accuracy of touch signal transmission on the display substrate is effectively improved.

[0148] Therefore, when the touch display device according to the embodiment of the present disclosure includes the above display substrate, it also has the above beneficial effects, which will not be repeated here.

[0149] It should be explained that a signal line extending along a certain direction means that the signal line includes a main portion and a sub-portion connected to the main portion, the main portion is a line, a line segment or a stripe, the main portion extends along this direction, and the length of the main portion extending along this direction is greater than the length of the sub-portion extending along another direction.

[0150] It should be noted that the "same layer" in the embodiments of the present disclosure may refer to a film layer on the same structure layer. Alternatively, for example, a film layer on the same layer may refer to a layer structure formed by forming a film layer for forming a specific pattern using the same film deposition process and then patterning the film layer using the same mask through a single patterning process. Depending on different specific patterns, a single patterning process may include multiple exposure, development, or etching processes, and the specific patterns in the formed layer structure may be continuous or discontinuous. These specific patterns may be located at different heights or have different thicknesses.

[0151] In the method embodiments of the present disclosure, the numbers of the steps are not intended to limit the order of the steps, and any change in the order of the steps made by a person skilled in the art without any creative effort is also within the scope of protection of the present disclosure.

[0152] It should be noted that each embodiment in this specification is described in a progressive manner, and the same or similar parts of each embodiment can be referred to each other, and each embodiment is described by focusing on the differences from other embodiments. In particular, the method embodiments are basically similar to the product embodiments, so they are described briefly, but for the relevant parts, please refer to the description of the product embodiments.

[0153] Unless otherwise defined, technical or scientific terms used in this disclosure have ordinary meanings that can be understood by those skilled in the art. The terms "first," "second," and similar terms used in this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish between different components. Similar terms such as "comprise" or "comprises" mean that the element or component described before the term includes the element or component listed after the term and its equivalents, but does not exclude other elements or components. Similar terms such as "connect," "couple," or "connect" are not limited to physical or mechanical connections, but may also include electrical connections, whether directly or indirectly connected. Terms such as "top," "bottom," "left," and "right" only indicate relative positional relationships, and if the absolute position of the described object changes, the relative positional relationships may change accordingly.

[0154] It will be understood that when an element, such as a layer, film, region, or substrate, is referred to as being "on" or "under" another element, the element may be "directly" located "on" or "under" the other element, or there may be intervening elements.

[0155] In the above description of the embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more examples or embodiments.

[0156] The above are only specific embodiments of the present disclosure, and the scope of protection of the present disclosure is not limited thereto. Those skilled in the art can easily think of modifications and substitutions within the technical scope described in the present disclosure, and all such modifications and substitutions should be considered to be within the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be governed by the appended claims.

Claims

1. A display substrate comprising: a base substrate; and a functional film layer provided on the base substrate, the functional film layer being capable of reflecting light rays directed from the outside toward the functional film layer; the display substrate further comprising a sealing layer and a shielding layer, the shielding layer being located on the opposite side of the functional film layer from the base substrate; the sealing layer being located between the shielding layer and the functional film layer; and the orthogonal projection of the shielding layer on the base substrate at least partially overlapping with the orthogonal projection of the functional film layer on the base substrate.

2. 2. The display substrate according to claim 1, wherein the display substrate includes a display area and a frame area surrounding the display area, the frame area includes a folding area, and at least a portion of the functional film layer is located between the folding area and the display area.

3. the functional film layer includes at least a portion extending along a first direction; 3. The display substrate of claim 2, wherein the shielding layer includes a plurality of first shielding patterns, at least a portion of the first shielding patterns extending along a first direction, the plurality of first shielding patterns being arranged along a second direction, the second direction intersecting the first direction, and orthogonal projections of at least a portion of the first shielding patterns on the base substrate at least partially overlap with orthogonal projections of the functional film layer on the base substrate.

4. The display substrate of claim 3 , wherein a ratio of a width of the first shielding pattern perpendicular to its extending direction to a minimum distance between adjacent first shielding patterns is 3:2 or more.

5. The display substrate according to claim 3 , further comprising a shielding line, at least a portion of the shielding line being located between two adjacent first shielding patterns.

6. The display substrate of claim 5 , wherein the minimum distance between the first shielding pattern and the shield line is 4 microns or more.

7. The display substrate of claim 5 , wherein the minimum distance between the first shielding pattern and the shielding line is equal to 0.4 times the width of the first shielding pattern perpendicular to its extending direction.

8. the functional film layer includes at least a portion extending along a first direction; 3. The display substrate of claim 2, wherein the shielding layer includes a second shielding pattern, the second shielding pattern including a shielding main body portion and a shielding extension portion coupled to each other, the shielding main body portion extending along the first direction, and a orthogonal projection of the shielding main body portion on the base substrate at least partially overlaps a orthogonal projection of the functional film layer on the base substrate.

9. The display substrate according to claim 8 , wherein the shielding extension also serves as a shielding line in the display substrate.

10. The display substrate according to any one of claims 1 to 9, further comprising an anode layer, the functional film layer and the anode layer being formed in the same layer and made of the same material, and the functional film layer being a positive power supply signal bus or a negative power supply signal bus in the display substrate.

11. The display substrate further includes an organic layer, and an organic trench is formed in the organic layer.

10. The display substrate of claim 6, wherein the shield line is located on the organic layer opposite the base substrate, the shield line includes a first shield portion that straddles the organic trench, and the extension direction of the first shield portion is perpendicular to the extension direction of the boundary of the organic trench that it straddles.

12. the organic layer includes a pixel-defining layer and a planarizing layer, at least a portion of the planarizing layer is located between the pixel-defining layer and the base substrate, a first organic trench is formed in the pixel-defining layer, and a second organic trench is formed in the planarizing layer, and an orthogonal projection of the first organic trench on the base substrate at least partially overlaps with an orthogonal projection of the second organic trench on the base substrate; 12. The display substrate of claim 11, wherein the extension direction of the first shield portion is perpendicular to the extension direction of the boundary of the first organic trench that it spans, and is perpendicular to the extension direction of the boundary of the second organic trench that it spans.

13. 12. The display substrate of claim 11, wherein the display substrate further includes a plurality of touch signal lines, each of the touch signal lines including a first touch portion spanning the organic trench, the extension direction of the first touch portion being perpendicular to the extension direction of a boundary of the organic trench it spans.

14. 14. The display substrate of claim 13, further comprising a plurality of first dummy patterns arranged along the first direction, the first dummy patterns extending along the second direction, the first dummy patterns spanning the organic trench, and the first dummy patterns and the shielding lines being provided in the same layer and made of the same material.

15. the plurality of first dummy patterns are divided into a plurality of first dummy pattern groups, and the plurality of first dummy pattern groups are arranged along a first direction; 15. The display substrate of claim 14, wherein the plurality of touch signal lines are divided into a plurality of touch signal line groups, at least some of the touch signal line groups and the first dummy pattern groups are alternately arranged along a first direction, and at least some of the shield lines are located between adjacent ones of the touch signal line groups and the first dummy pattern groups.

16. The display substrate of claim 11 , wherein at least a portion of the orthogonal projection of the organic trench on the base substrate is located between the bending area and the display region.

17. the display substrate further includes a plurality of touch signal lines, the touch signal lines including a first touch portion, a second touch portion, and a third touch portion that are connected end to end in sequence, the first touch portion and the second touch portion being located in the frame region, and the third touch portion being located in the display region; The display substrate according to claim 2 , wherein a routing wiring structure is formed in the second touch portion included in at least some of the touch signal lines, and the resistances of the plurality of touch signal lines are substantially the same.

18. the second touch portion includes a first receiving end, a second receiving end, and a routing structure, the routing structure is coupled to the first receiving end and the second receiving end respectively, the first receiving end is coupled to a corresponding first touch portion, and the second receiving end is coupled to a corresponding third touch portion; The display substrate of claim 17 , wherein the first receiving edge includes at least a portion that extends along the second direction, and the second receiving edge includes at least a portion that extends along the second direction.

19. 19. The display substrate of claim 18, wherein a plurality of second receiving ends included in the plurality of touch signal lines are arranged along a first direction, and a dummy routing wiring structure is provided between at least some of the second receiving ends adjacent to each other.

20. The display substrate according to claim 18 , wherein the width of the second receiving end portion perpendicular to its extending direction is three times the line width of the wiring structure.

21. The display substrate of claim 17 , wherein the touch signal line and the shielding layer are provided in the same layer and made of the same material.

22. A touch display device comprising the display substrate according to any one of claims 1 to 21.

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