Display substrate and display device

Abstract

The display substrate and display device provided by the present application include a base substrate, and a first routing layer, a first insulating layer, a transition connection layer, a second insulating layer, a third insulating layer and a second routing layer arranged in sequence on a wiring area of ​​the base substrate; the first insulating layer is provided with a first opening; the second insulating layer is provided with a second opening; the third insulating layer is provided with a third opening; the first routing layer includes a plurality of first routings; the transition connection layer includes a plurality of electrical connection parts; the second routing layer includes a plurality of second routings; the first routing is electrically connected to the electrical connection part through the first opening, and the electrical connection part is electrically connected to the second routing through the second opening and the third opening; at least two of the projection of the first opening on the base substrate, the projection of the second opening on the base substrate and the projection of the third opening on the base substrate are staggered; the first routing corresponds to the second routing one-to-one, and a pair of corresponding routings are electrically connected; the first routing, the electrical connection part and the second routing have the same extension direction.

Description

[0001] This application is application number 202110333034.2, application date is March 29, 2021, and application name is "A Divisional application for the invention patent application for "display substrate and display device". Technical Field

[0002] The present application relates to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0003] With the rapid development of AMOLED, the development of mobile phones has entered the era of full screen and narrow frame. In order to bring better user experience, full screen, narrow frame, high resolution, curling wearable, folding, etc. will become the important development direction of AMOLED in the future. In recent years, AMOLED has developed rapidly, the technology has gradually matured, and the requirements for the stability of screen performance have become higher and higher; for screen designers, it is particularly important to optimize the connectivity of each signal channel. In the connection of each signal channel, if there is a poor connection or disconnection, it will directly affect the screen performance and yield. Summary of the invention

[0004] The present application discloses a display substrate and a display device, and aims to provide a wiring layer changing design scheme for the display substrate to improve the performance and yield of the display product.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A display substrate comprises a base substrate, wherein the base substrate has a display area and a wiring area located around the display area; the display substrate further comprises a first wiring layer, a first insulating layer, a transition connection layer, a second insulating layer, a third insulating layer and a second wiring layer which are sequentially arranged on the wiring area of ​​the base substrate; wherein:

[0007] The first insulating layer is provided with a first opening; the second insulating layer is provided with a second opening; the third insulating layer is provided with a third opening; the first routing layer includes a plurality of first routings; the transition connection layer includes a plurality of electrical connection portions; the second routing layer includes a plurality of second routings;

[0008] The first wiring is electrically connected to the electrical connection portion through the first opening, and the electrical connection portion is electrically connected to the second wiring through the second opening and the third opening;

[0009] At least two of the projection of the first opening on the base substrate, the projection of the second opening on the base substrate, and the projection of the third opening on the base substrate are staggered;

[0010] The first routing lines correspond to the second routing lines one by one, and a pair of corresponding routing lines are electrically connected; the first routing lines, the electrical connection portion and the second routing lines extend in the same direction.

[0011] Optionally, a projection of the second opening on the substrate at least partially overlaps with a projection of the third opening on the substrate.

[0012] Optionally, a position of a projection of the first opening on the base substrate is staggered from a position of a projection of the third opening on the base substrate.

[0013] Optionally, the distance between the first opening and the substrate is smaller than the distance between the second opening or the third opening and the substrate.

[0014] Optionally, an arrangement direction of the first routing line, the electrical connection portion, and the second routing line is the same as an extension direction of the first routing line or the second routing line.

[0015] Optionally, the first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; and the third opening includes a plurality of third via holes;

[0016] Projections of the plurality of first via holes on the base substrate and projections of the plurality of third via holes on the base substrate are arranged alternately.

[0017] Optionally, projections of the plurality of first via holes and the plurality of third via holes on the base substrate are located within a projection of the second opening on the base substrate.

[0018] Optionally, the first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; and the third opening is a continuous hollow portion;

[0019] An overlapping area between projections of the plurality of first via holes on the base substrate and projections of the second opening and the third opening on the base substrate is zero.

[0020] Optionally, in the extension direction of the first trace, a size of the first via hole is smaller than a size of the second opening or the third opening.

[0021] Optionally, in an extension direction perpendicular to the first trace, a size of the first via hole is smaller than a size of the second opening or the third opening.

[0022] Optionally, the area of ​​the first via hole is smaller than the area of ​​the second opening or the third opening.

[0023] Optionally, the sum of the areas of the plurality of first via holes is smaller than the area of ​​the second opening or the third opening.

[0024] Optionally, the sum of the areas of the plurality of first via holes is smaller than the sum of the areas of the second opening or the sum of the areas of the plurality of third via holes.

[0025] Optionally, in the extension direction of the first wiring, the first opening includes a plurality of first via holes arranged at intervals; in the extension direction of the first wiring, the plurality of first via holes overlap with the second opening and the third opening.

[0026] Optionally, a projection of the second opening on the base substrate substantially coincides with a projection of the third opening on the base substrate.

[0027] Optionally, the direction of the position stagger is consistent with the extension direction of the first routing line, or the direction of the position stagger is consistent with the extension direction of the second routing line.

[0028] Optionally, the display substrate further includes a gate layer and a first source-drain electrode layer located on the display area of ​​the base substrate;

[0029] The first wiring layer is arranged at the same layer as the gate layer;

[0030] The transition connection layer is arranged on the same layer as the first source-drain electrode layer.

[0031] Optionally, the first insulating layer is an interlayer insulating layer.

[0032] Optionally, the gate layer includes a first gate layer and a second gate layer which are stacked;

[0033] The first wiring layer includes odd-numbered wiring rows and even-numbered wiring rows; the odd-numbered wiring rows are arranged on the same layer as the first gate layer; and the even-numbered wiring rows are arranged on the same layer as the second gate layer.

[0034] Optionally, the base substrate includes a bending area located around the display area, and the bending area can be bent along a bending line; the bending line intersects with an extension direction of the second wiring;

[0035] The line-changing area includes at least one side area located on both sides of the bending line.

[0036] Optionally, the first routing line includes one or more of a touch signal routing line, a gate signal routing line and a data signal routing line.

[0037] A display device, comprising the display substrate as described in any one of the above items.

[0038] A display substrate comprises a base substrate, wherein the base substrate has a display area and a wiring area located around the display area; the display substrate further comprises a first wiring layer, a first insulating layer, a transition connection layer, a second insulating layer, a third insulating layer and a second wiring layer which are sequentially arranged on the wiring area of ​​the base substrate; wherein:

[0039] The first insulating layer is provided with a first opening; the second insulating layer is provided with a second opening; the third insulating layer is provided with a third opening; the first routing layer includes a plurality of first routings; the transition connection layer includes a plurality of electrical connection portions; the second routing layer includes a plurality of second routings;

[0040] The first wiring is electrically connected to the electrical connection portion through the first opening, and the electrical connection portion is electrically connected to the second wiring through the second opening and the third opening;

[0041] The projection of the second opening on the base substrate covers the projection of the third opening on the base substrate; the position of the projection of the first opening on the base substrate is staggered with the position of the projection of the second opening on the base substrate;

[0042] The direction of the position staggering is consistent with the extending direction of the first routing line, or the direction of the position staggering is consistent with the extending direction of the second routing line. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A schematic structural diagram of a display substrate provided in one embodiment of the present application;

[0044] Figure 2 A partial structural schematic diagram of a line switching area of ​​a display substrate provided in one embodiment of the present application;

[0045] Figure 3 A display substrate provided in one embodiment of the present application Figure 2 Schematic diagram of the cross-sectional structure along the A1-A2 direction;

[0046] Figure 4 Another embodiment of the present application provides a display substrate along Figure 2 Schematic diagram of the cross-sectional structure along the A1-A2 direction;

[0047] Figure 5 A partial structural schematic diagram of a line switching area of ​​a display substrate provided in another embodiment of the present application;

[0048] Figure 6 A display substrate provided in one embodiment of the present application Figure 5 Schematic diagram of the cross-sectional structure along the B1-B2 direction;

[0049] Figure 7 Another embodiment of the present application provides a display substrate along Figure 5 Schematic diagram of the cross-sectional structure along the B1-B2 direction. DETAILED DESCRIPTION

[0050] In conventional display products, the binding area includes gate signal (GOA) routing, touch signal (TP) routing, source signal (Source) routing, and data signal (Data) routing, some of which require layer change design.

[0051] For example, in existing display products, some routing lines switch layers between the second source-drain electrode layer (SD2) and the gate layer (Gate). At this time, it is necessary to remove the organic layer and the inorganic layer between the two metal layers. For example, the existing design removes the planarization layer (PLN), the passivation layer (PVX) and the interlayer insulation layer (ILD) to achieve the overlap of the SD2 and Gate layers, and the vias of the PLN, PVX and ILD are designed at the same position during the layer switching design. Since the film layer break is too large, there is a greater risk of signal line breakage here.

[0052] In view of the above research findings, the present application discloses a display substrate and a display device, with the aim of providing a wiring layer changing design scheme for a display substrate, reducing the risk of wiring breakage and improving the performance and yield of display products.

[0053] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0054] like Figure 1 , Figure 2 and Figure 5 As shown, an embodiment of the present application provides a display substrate, including a base substrate 1, the base substrate 1 having a display area AA and a line switching area CC located around the display area AA; the display substrate also includes a first routing layer 2, a first insulating layer 3, a transition connection layer 4, a second insulating layer 5, a third insulating layer 6 and a second routing layer 7 which are sequentially arranged on the line switching area CC of the base substrate 1.

[0055] Specifically, Figures 2 to 7 As shown, the first insulating layer 3 is provided with a first opening 30; the second insulating layer 5 is provided with a second opening 50; the third insulating layer 6 is provided with a third opening 60; the first routing layer 2 includes a plurality of first routings 20; the transition connection layer 4 includes a plurality of electrical connection parts 40; the second routing layer 7 includes a plurality of second routings 70; the first routing 20 is electrically connected to the electrical connection part 40 through the first opening 30, and the electrical connection part 40 is electrically connected to the second routing 70 through the second opening 50 and the third opening 60.

[0056] Further, at least two of the projection of the first opening 30 on the base substrate 1 , the projection of the second opening 50 on the base substrate 1 , and the projection of the third opening 60 on the base substrate 1 are staggered.

[0057] 'The positions of the projections are staggered' means that the staggered projections include non-overlapping areas; for example, 'the positions of the two projections are staggered' means that each projection includes a non-overlapping area with the other projection.

[0058] The first wiring 20 corresponds to the second wiring 70 one by one, and the corresponding pair of wirings are electrically connected; the first wiring 20, the electrical connection portion 40 and the second wiring 70 extend in the same direction.

[0059] In the display substrate provided in the embodiment of the present application, the first wiring 20 and the second wiring 70 extending in the same direction are overlapped and transitioned through the electrical connection part 40, and the first wiring 20, the electrical connection part 40 and the second wiring 70 are connected in sequence through the first opening 30, the second opening 50 and the third opening 60. In addition, since the positions of at least two of the openings are staggered, continuous breaks can be avoided and the height of the layer-changing overlap can be reduced, thereby effectively reducing the risk of signal wiring breakage, thereby ensuring stable transmission of each signal wiring and improving the performance and yield of the display product.

[0060] In a specific embodiment, the first routing line 20 corresponds to the second routing line 70 one by one, and the corresponding pair of routing lines are electrically connected. In other words, the routing lines of the first routing layer 2 and the second routing layer 7 correspond one by one, and the corresponding pair of routing lines belong to a signal line and only extend between different layers.

[0061] In a specific embodiment, the display substrate further includes a gate layer, a first source-drain electrode layer, and a second source-drain electrode layer located on the display area AA of the base substrate.

[0062] Specifically, Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the first wiring layer 2 is arranged at the same layer as the gate layer; the transition connection layer 4 is arranged at the same layer as the first source-drain electrode layer; and the second wiring layer 7 is arranged at the same layer as the second source-drain electrode layer.

[0063] Further, such as Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the first insulating layer 3 is an interlayer insulating layer; the second insulating layer 5 is an inorganic passivation layer; and the third insulating layer 6 is an organic planar layer. Figure 3 , Figure 4 , Figure 6 and Figure 7It can be seen that the distance between the first insulating layer 3 and the substrate 1 is smaller than the distance between the second insulating layer 5 or the third insulating layer 6 and the substrate 1, so that the distance between the first opening 30 of the first insulating layer 3 and the substrate 1 is smaller than the distance between the second opening 50 of the second insulating layer 5 or the third opening 60 of the third insulating layer 6 and the substrate 1.

[0064] Exemplarily, the gate layer may include a first gate layer and a second gate layer that are stacked. The first routing layer includes odd-numbered routing rows and even-numbered routing rows; the odd-numbered routing rows are arranged on the same layer as the first gate layer; and the even-numbered routing rows are arranged on the same layer as the second gate layer. In this way, adjacent first routing rows are in different layers, and a gate insulating layer is provided between the two, so that problems such as short circuits and crosstalk are not likely to occur.

[0065] For example, the first gate layer is located between the substrate 1 and the gate insulating layer 8, and the odd-numbered rows of first wiring 20 and second wiring 70 need to pass through the gate insulating layer 8 when switching layers. Figure 4 and Figure 7 As shown, the gate insulating layer 8 is provided with a layer-changing opening corresponding to the odd-numbered rows of first wirings 20, and the projection of the layer-changing opening on the base substrate 1 roughly coincides with the projection of the odd-numbered rows of first openings of the first insulating layer 3 on the base substrate 1; specifically, the layer-changing opening provided on the gate insulating layer 8 can be prepared and formed by the same sequential patterning process as the odd-numbered rows of first openings of the first insulating layer 3.

[0066] like Figure 3 and Figure 6 As shown, the layer switching between the first wiring 20 and the second wiring 70 of the even-numbered rows does not pass through the gate insulating layer 8, and the gate insulating layer 8 does not need to be provided with an opening at the layer switching location of the wiring of the even-numbered rows.

[0067] In a specific embodiment, in the embodiment of the present application, Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the projection of the second opening 50 on the substrate 1 at least partially overlaps the projection of the third opening 60 on the substrate 1. In this way, the electrical connection portion 40 can be directly connected to the second trace 70 through the second opening 50 and the third opening 60, without providing a transition connection structure between the second opening 50 and the third opening 60.

[0068] In a specific embodiment, in the embodiment of the present application, at least two of the projection of the first opening 30 on the base substrate 1, the projection of the second opening 50 on the base substrate 1, and the projection of the third opening 60 on the base substrate 1 are staggered, and, as Figure 2 and Figure 5As shown, the direction of the position misalignment is consistent with the extension direction of the first wiring 20 , or the direction of the position misalignment is consistent with the extension direction of the second wiring 70 .

[0069] Specifically, the direction of the position staggering is the direction of arrangement of the areas where the opening projections do not overlap. Figure 5 As shown, the extension direction of the first routing 20 is consistent with that of the second routing 70, and the direction in which the projection of the first opening 30 and the projection of the third opening 60 are staggered is consistent with the routing extension direction, that is, the area where the projection of the first opening 30 and the projection of the third opening 60 do not overlap with each other is arranged along the routing extension direction.

[0070] In a specific embodiment, Figures 2 to 7 As shown, the position of the projection of the first opening 30 on the substrate 1 is offset from the position of the projection of the third opening 60 on the substrate 1 .

[0071] On the one hand, since a transition connection layer 4 is provided between the first insulating layer 3 and the third insulating layer 6, the electrical connection portion 40 provided in the transition connection layer 4 can be used for transition connection between the first wiring 20 and the second wiring 70. Therefore, the size of the first opening 30 provided in the first insulating layer 3 and the third opening 60 provided in the third insulating layer 6 and the offset distance between the two are not limited by the distance between the first wiring 20 and the second wiring 70. For example, the offset distance between the two can be set larger to simplify the preparation process. On the other hand, the third insulating layer 6 is an organic layer with a generally large thickness. The third insulating layer 6 is offset from other layers, which has a more significant effect on reducing the discontinuity of layer switching and can more significantly reduce the risk of signal wiring disconnection.

[0072] In a specific embodiment, Figure 5 , Figure 6 and Figure 7 As shown, the first opening 30 includes a plurality of first via holes 31; the second opening 50 is a continuous hollow portion; and the third opening 60 includes a plurality of third via holes 61. Optionally, the sum of the areas of the plurality of first via holes 31 is smaller than the area of ​​the second opening 50 or the plurality of third via holes 61.

[0073] Specifically, projections of the plurality of first via holes 31 on the base substrate 1 and projections of the plurality of third via holes 61 on the base substrate 1 are arranged alternately.

[0074] For example, Figure 5 As shown, the first trace 20 and the second trace 70 extend in the same direction, and projections of the plurality of first vias 31 on the substrate and projections of the plurality of third vias 61 on the substrate are alternately arranged along the extending direction of the first trace 20 .

[0075] For example, the projections of the adjacent first via hole 31 and the third via hole 61 on the base substrate 1 may not overlap; or Figure 6 and Figure 7 As shown, the edge of the first via hole 31 projected on the base substrate 1 may overlap with the edge of the third via hole 61 projected on the base substrate 1 , and the width of the overlapping area may be substantially the same as the film thickness of the electrical connection portion 40 .

[0076] For example, Figure 5 As shown, the projections of the multiple first vias 31 and the multiple third vias 61 on the base substrate 1 are located within the projection of the second opening 50 on the base substrate 1, which is equivalent to that in the extension direction of the first trace 20, the multiple first vias 31 overlap with the third opening 60 formed by the second opening 50 and the multiple third vias 61.

[0077] In the embodiment of the present application, the projections of the plurality of first via holes 31 on the base substrate 1 and the projections of the plurality of third via holes 61 on the base substrate 1 are arranged alternately, so that in the open layer-changing region, the film layer of the third insulating layer 6 is basically in the first via holes 31, and the upper surface height is relatively low, such as Figure 6 and Figure 7 As shown, the overlap step difference of the film layer between the second wiring 70 and the electrical connection portion 40 is very small, which can effectively reduce the risk of disconnection of the signal wiring.

[0078] In another specific embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the first opening 30 includes a plurality of first via holes 31; the second opening 50 is a continuous hollow portion; and the third opening 60 is a continuous hollow portion.

[0079] Specifically, the overlapping area of ​​the projections of the plurality of first vias 31 on the substrate 1 and the projections of the second opening 50 and the third opening 60 on the substrate 1 is zero. That is, the projection of the first opening 30 on the substrate 1 is completely staggered and does not overlap with the projections of the second opening 50 and the third opening 60 on the substrate 1. Optionally, in the extension direction of the first wiring 20, the size of the first via 31 is smaller than the size of the second opening 50 or the third opening 60; in the extension direction perpendicular to the first wiring 20, the size of the first via 31 is smaller than the size of the second opening 50 or the third opening 60; the area of ​​the first via 31 is smaller than the area of ​​the second opening 50 or the third opening 60; further, the sum of the areas of the plurality of first vias 31 is smaller than the area of ​​the second opening 50 or the third opening 60.

[0080] Exemplarily, a projection of the second opening 50 on the base substrate 1 substantially coincides with a projection of the third opening 60 on the base substrate 1 .

[0081] In the embodiment of the present application, the projections of the plurality of first vias 31 are separately arranged from the projections of the second opening 50 and the third opening 60. In this way, the film layer height of the electrical connection portion 40 below the second opening 50 and the third opening 60 is uniform, and when the film layer between the second wiring 70 and the electrical connection portion 40 is overlapped, there is no continuous break, and the overall step difference is small, thereby effectively reducing the risk of signal wiring breakage.

[0082] In addition, combined Figures 2 to 4 It can be seen that the extension direction of the first routing 20 and the second routing 70 is the same. In order to facilitate the overlapping of the first routing 20 and the second routing 70 through the electrical connection part 40, the arrangement direction of the first routing 20, the electrical connection part 40 and the second routing 70 can be set to be the same as the extension direction of the first routing 20 or the second routing 70.

[0083] In a specific embodiment, the first routing line may include one or more of a touch signal routing line, a gate signal routing line, and a data signal routing line. In other words, in the embodiment of the present application, the layer switching design between the first routing line and the second routing line can be used for layer switching of the touch signal routing line, and can also be used for layer switching of the gate signal routing line or layer switching of the data signal routing line.

[0084] In a specific embodiment, Figure 1 As shown, the first wiring 20 and the second wiring 70 are located at the periphery of the display substrate, and one end of each pair of the first wiring 20 and the second wiring 70 extends toward the display area AA, and the other end extends in a direction away from the display area AA.

[0085] For example, Figure 1 As shown, the base substrate 1 includes a bending area BB located at one side of the display area AA. The bending area BB can be bent along a bending line S. The bending line S intersects with the extension direction of the second wiring 70 .

[0086] Specifically, the line change area CC includes at least one side area located on both sides of the bending line S. For example, Figure 1 As shown, a line switching area CC of the embodiment of the present application may be provided on the side of the bending line S close to the display area AA, and a line switching area CC of the embodiment of the present application may also be provided on the side of the bending line S away from the display area AA. Each signal line may be switched once in each of the two line switching areas.

[0087] For example, taking the gate signal line as an example, after the gate signal line extends from the display area to the surrounding non-display area, it is first switched from the gate layer to the second source-drain electrode layer through a layer-changing design. After extending a certain distance in the second source-drain electrode layer and passing through the bending area, it is again switched back to the gate layer from the second source-drain electrode layer through a layer-changing design. Both of these layer-changing designs can adopt the scheme in the embodiment of the present application. At this time, a section of the line extending in the gate layer is equivalent to the first line, and a section extending in the second source-drain electrode layer is equivalent to the second line. The designs of the data signal line and the touch signal line are similar, and the only difference is the difference in the first layer-changing design. The data signal line is initially located in the second source-drain electrode layer and does not need to be changed for the first time. The first layer change of the touch signal line is from the touch electrode layer to the second source-drain electrode layer.

[0088] In addition, the present application also provides a display substrate, such as Figures 1 to 4 As shown, it includes a base substrate 1, the base substrate 1 has a display area AA and a line switching area CC located around the display area AA; the display substrate also includes a first wiring layer 2, a first insulating layer 3, a transition connection layer 4, a second insulating layer 5, a third insulating layer 6 and a second wiring layer 7 which are sequentially arranged on the line switching area CC of the base substrate 1; the first insulating layer 3 is provided with a first opening 30; the second insulating layer 5 is provided with a second opening 50; the third insulating layer 6 is provided with a third opening 60; the first wiring layer 2 includes a plurality of first wirings 20; the transition connection layer 4 includes a plurality of electrical connection portions 40; the second wiring layer 7 comprises a plurality of second wirings 70; the first wiring 20 is electrically connected to the electrical connection portion 40 through the first opening 30, and the electrical connection portion 40 is electrically connected to the second wiring 70 through the second opening 50 and the third opening 60; the projection of the second opening 50 on the base substrate 1 covers the projection of the third opening 60 on the base substrate 1; the position of the projection of the first opening 30 on the base substrate 1 is staggered from the position of the projection of the second opening 50 on the base substrate 1; the direction of the position staggering is consistent with the extension direction of the first wiring 20, or the direction of the position staggering is consistent with the extension direction of the second wiring 70.

[0089] In addition, an embodiment of the present application further provides a display device, which includes a display substrate as described above.

[0090] The display device provided in the embodiment of the present application can effectively reduce the risk of signal line disconnection, thereby ensuring stable transmission of each signal line and improving the performance and yield of the display product. The display device can be specifically applied to mobile phones, PADs, monitors and other devices.

[0091] It should be noted that in some embodiments of the present disclosure, the display substrate and the display device may also include other structures, which may be determined according to actual needs, and the embodiments of the present disclosure are not limited to this. In addition, the embodiments of the present disclosure are only examples of specific implementation plans, and the invention scheme of the present application is not limited to the above embodiments.

[0092] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A display substrate, characterized in that: The invention comprises a base substrate, wherein the base substrate has a display area and a wiring area located around the display area; the display substrate further comprises a first wiring layer, a first insulating layer, a transition connection layer, a second insulating layer, a third insulating layer and a second wiring layer which are sequentially arranged on the wiring area of ​​the base substrate; wherein: The first insulating layer is provided with a first opening; the second insulating layer is provided with a second opening; the third insulating layer is provided with a third opening; the first routing layer includes a plurality of first routings; the transition connection layer includes a plurality of electrical connection portions; the second routing layer includes a plurality of second routings; The first wiring is electrically connected to the electrical connection portion through the first opening, and the electrical connection portion is electrically connected to the second wiring through the second opening and the third opening; At least two of the projection of the first opening on the base substrate, the projection of the second opening on the base substrate, and the projection of the third opening on the base substrate are staggered; The first routing lines correspond to the second routing lines one by one, and a pair of corresponding routing lines are electrically connected; the first routing lines, the electrical connection portion and the second routing lines extend in the same direction; The projection position of the first opening on the base substrate is staggered with the projection position of the third opening on the base substrate; The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening includes a plurality of third via holes; The projections of the plurality of first via holes on the base substrate and the projections of the plurality of third via holes on the base substrate are alternately arranged; Alternatively, the first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; and the third opening is a continuous hollow portion; An overlapping area between projections of the plurality of first via holes on the base substrate and projections of the second opening and the third opening on the base substrate is zero.

2. The display substrate according to claim 1, wherein: A projection of the second opening on the base substrate at least partially overlaps with a projection of the third opening on the base substrate.

3. The display substrate according to claim 1, wherein: The distance between the first opening and the substrate is smaller than the distance between the second opening or the third opening and the substrate.

4. The display substrate according to claim 1, wherein: An arrangement direction of the first routing line, the electrical connection portion, and the second routing line is the same as an extension direction of the first routing line or the second routing line.

5. The display substrate according to claim 1, wherein: The first opening includes a plurality of first vias; the second opening is a continuous hollow portion; the third opening includes a plurality of third vias; the projections of the plurality of first vias and the plurality of third vias on the base substrate are located within the projection of the second opening on the base substrate.

6. The display substrate according to claim 1, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening is a continuous hollow portion; in the extension direction of the first trace, the size of the first via hole is smaller than the size of the second opening or the third opening.

7. The display substrate according to claim 1, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening is a continuous hollow portion; in an extension direction perpendicular to the first routing line, a size of the first via hole is smaller than a size of the second opening or the third opening.

8. The display substrate according to claim 1, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening is a continuous hollow portion; the area of ​​the first via hole is smaller than the area of ​​the second opening or the third opening.

9. The display substrate according to claim 1, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening is a continuous hollow portion; and the sum of the areas of the plurality of first via holes is smaller than the area of ​​the second opening or the third opening.

10. The display substrate according to claim 5, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening includes a plurality of third via holes; the sum of the areas of the plurality of first via holes is smaller than the area of ​​the second opening or the sum of the areas of the plurality of third via holes.

11. The display substrate according to claim 5, wherein: The first opening includes a plurality of first vias; the second opening is a continuous hollow portion; the third opening includes a plurality of third vias; in the extension direction of the first routing line, the first opening includes a plurality of the first vias arranged at intervals; in the extension direction of the first routing line, the plurality of first vias overlap with the second opening and the third opening.

12. The display substrate according to claim 1, wherein: The first opening includes a plurality of first via holes; the second opening is a continuous hollow portion; the third opening is a continuous hollow portion; a projection of the second opening on the base substrate substantially coincides with a projection of the third opening on the base substrate.

13. The display substrate according to any one of claims 1 to 12, characterized in that: The direction of the position staggering is consistent with the extending direction of the first routing line, or the direction of the position staggering is consistent with the extending direction of the second routing line.

14. The display substrate according to any one of claims 1 to 12, characterized in that: The display substrate further comprises a gate layer and a first source-drain electrode layer located on the display area of ​​the base substrate; The first wiring layer is arranged at the same layer as the gate layer; The transition connection layer is arranged on the same layer as the first source-drain electrode layer.

15. The display substrate according to claim 14, wherein: The first insulating layer is an interlayer insulating layer.

16. The display substrate according to claim 14, wherein: The gate layer includes a first gate layer and a second gate layer which are stacked; The first wiring layer includes odd-numbered wiring rows and even-numbered wiring rows; the odd-numbered wiring rows are arranged on the same layer as the first gate layer; and the even-numbered wiring rows are arranged on the same layer as the second gate layer.

17. The display substrate according to claim 14, wherein: The base substrate includes a bending area located around the display area, and the bending area can be bent along a bending line; the bending line intersects with an extension direction of the second wiring; The line-changing area includes at least one side area located on both sides of the bending line.

18. The display substrate according to any one of claims 1 to 12 and 15 to 17, characterized in that: The first wiring includes one or more of a touch signal wiring, a gate signal wiring and a data signal wiring.

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

20. A display substrate, characterized in that: The invention comprises a base substrate, wherein the base substrate has a display area and a wiring area located around the display area; the display substrate further comprises a first wiring layer, a first insulating layer, a transition connection layer, a second insulating layer, a third insulating layer and a second wiring layer which are sequentially arranged on the wiring area of ​​the base substrate; wherein: The first insulating layer is provided with a first opening; the second insulating layer is provided with a second opening; the third insulating layer is provided with a third opening; the first routing layer includes a plurality of first routings; the transition connection layer includes a plurality of electrical connection portions; the second routing layer includes a plurality of second routings; The first wiring is electrically connected to the electrical connection portion through the first opening, and the electrical connection portion is electrically connected to the second wiring through the second opening and the third opening; The projection of the second opening on the base substrate covers the projection of the third opening on the base substrate; the position of the projection of the first opening on the base substrate is staggered with the position of the projection of the second opening on the base substrate; The direction of the position staggering is consistent with the extending direction of the first routing line, or the direction of the position staggering is consistent with the extending direction of the second routing line.

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