Display substrate and display device

Abstract

A display substrate and a display device, wherein the display substrate comprises a display area and a frame area, the display substrate comprises a driving chip and a flexible circuit board, the frame area is arranged outside the display area, the frame area comprises a first area, a second area and a third area arranged in sequence in a direction away from the display area, the driving chip is bound to the first area, and the flexible circuit board is bound to the third area; the display substrate comprises a substrate and an organic insulating layer arranged on the substrate, at least part of the organic insulating layer is located in the display area, the second area and the third area, and the organic insulating layer located in the second area is provided with at least one first through hole extending in a first direction.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of display technology, and specifically to a display substrate and a display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and quantum dot light-emitting diodes (QLEDs) are active-matrix display devices that offer advantages such as self-illumination, wide viewing angles, high contrast, low power consumption, extremely fast response times, thinness, flexibility, and low cost. With the continuous development of display technology, display devices using OLEDs as the light-emitting element and thin-film transistors (TFTs) for signal control have become the mainstream products in the display field. Utility Model Content

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

[0004] This disclosure provides a display substrate and a display device.

[0005] In a first aspect, this disclosure provides a display substrate, including: a display area and a border area. The display substrate includes: a driver chip and a flexible circuit board. The border area surrounds the outside of the display area. The border area includes: a first area, a second area, and a third area arranged sequentially along a direction away from the display area. The driver chip is bonded to the first area, and the flexible circuit board is bonded to the third area. The display substrate includes: a substrate and an organic insulating layer disposed on the substrate. At least a portion of the organic insulating layer is located in the display area, the second area, and the third area. The organic insulating layer located in the second area is provided with at least one first through hole. The first through hole extends along a first direction, which intersects with a second direction. The second direction is the arrangement direction of the first area, the second area, and the third area.

[0006] In an exemplary embodiment, the length of the first boundary of the at least one first through hole along the first direction is equal to the length of the second boundary of the first through hole along the first direction, the first boundary being the boundary of the first through hole near the display area, and the second boundary being the boundary of the first through hole away from the display area.

[0007] In an exemplary embodiment, the number of the first through holes is M, where M is a positive integer greater than or equal to 2, and the first through holes to the Mth first through holes are arranged sequentially along the direction away from the display area; The length of the first boundary of the (m+1)th first through hole along the first direction is equal to the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

[0008] In an exemplary embodiment, the length of the first boundary of the at least one first through hole along the first direction is greater than the length of the second boundary of the first through hole along the first direction. The first boundary is the boundary of the first through hole near the display area, and the second boundary is the boundary of the first through hole away from the display area.

[0009] In an exemplary embodiment, the number of the first through holes is M, where M is a positive integer greater than or equal to 2, and the first through holes to the Mth first through holes are arranged sequentially along the direction away from the display area; The length of the first boundary of the (m+1)th first through hole along the first direction is less than the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

[0010] In an exemplary embodiment, it further includes: a first connecting hole and a second connecting hole; the extending direction of at least one of the first connecting hole and the second connecting hole intersects the first direction and the second direction, respectively; The first connecting hole and the second connecting hole are respectively located on opposite sides of at least one first through hole, and the first connecting hole and the second connecting hole are respectively connected to the first first through hole to the Mth first through hole.

[0011] In an exemplary embodiment, the first region includes a plurality of pads arranged in an array, and the second region includes a plurality of connection electrodes arranged in an array. The driver chip is connected to the plurality of pads, and the plurality of connection electrodes are respectively connected to the driver chip and the flexible circuit board. The length of the at least one first via along the first direction is greater than at least one of the lengths of the regions in the first region where the plurality of pads arranged along the first direction are located and the lengths of the regions in the second region where the plurality of connecting electrodes arranged along the first direction are located.

[0012] In an exemplary embodiment, the number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is equal to the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area.

[0013] In an exemplary embodiment, the number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is greater than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area. In an exemplary embodiment, the number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is less than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area.

[0014] In an exemplary embodiment, at least two of the M first through holes have the same or different maximum lengths along the second direction.

[0015] In an exemplary embodiment, when M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area is equal to the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area, and is also equal to the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area.

[0016] In an exemplary embodiment, when M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area is greater than the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area, and less than the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area.

[0017] In an exemplary embodiment, when M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area is less than the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area, and greater than the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area.

[0018] In an exemplary embodiment, when M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole close to the display area is equal to the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole close to the display area, where m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is equal to the distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region near the display area, and is also equal to the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole near the display area.

[0019] In an exemplary embodiment, when M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole close to the display area is greater than the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole close to the display area, where m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is greater than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area. The distance along the second direction between the side of the first opening of the Mth through hole away from the display area and the side of the third region near the display area is less than the distance along the second direction between the side of the first opening of the (M-1)th through hole away from the display area and the side of the first opening of the Mth through hole near the display area.

[0020] In an exemplary embodiment, when M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole close to the display area is less than the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole close to the display area, where m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is less than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area. The distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region near the display area is greater than the distance along the second direction between the side of the first opening of the (M-1)th first through hole away from the display area and the side of the first opening of the Mth first through hole near the display area.

[0021] In an exemplary embodiment, the orthographic projection of the organic insulating layer on the substrate does not overlap with the orthographic projection of the first region on the substrate.

[0022] In an exemplary embodiment, it further includes: a hole region, the display region being disposed around the hole region, the organic insulating layer being at least partially located in the hole region, and the hole region being provided with a plurality of isolation pillars; The organic insulating layer located in the hole region is provided with at least one second through hole, and the orthographic projection of the at least one second through hole on the substrate is located on the side of the orthographic projection of the plurality of isolation pillars on the substrate away from the display area; The thickness of the organic insulating layer in the display area perpendicular to the substrate is greater than the thickness of the organic insulating layer in the hole area perpendicular to the substrate.

[0023] In an exemplary embodiment, a gate driving circuit is provided in the frame region; The organic insulating layer is at least partially located in the frame region, and the organic insulating layer located in the frame region is further provided with a third through hole. The third through hole is at least partially located around the display area, and the orthogonal projection of the third through hole on the substrate is located on the side of the orthogonal projection of the gate driving circuit on the substrate away from the display area.

[0024] In an exemplary embodiment, the system further includes: a circuit structure layer, a light-emitting structure layer, and a touch structure layer sequentially stacked on the substrate, wherein the circuit structure layer includes: a gate metal layer group and a source / drain metal layer group, the gate metal layer group includes a plurality of gate metal layers sequentially stacked on the substrate, the source / drain metal layer group includes a plurality of source / drain metal layers sequentially stacked on the substrate, and the touch structure layer includes: a touch buffer layer, a first touch conductive layer, a touch interlayer insulating layer, and a second touch conductive layer; An inorganic insulating layer is provided between at least two metal layers in the plurality of gate metal layers and between the gate metal layer group and the source / drain metal layer group; a planarization layer is provided between at least two metal layers in the plurality of source / drain metal layers and between the source / drain metal layer group and the light-emitting structure layer. The organic insulating layer includes: a planar layer located between the source / drain metal layer group and the light-emitting structure layer; The thickness of the organic insulating layer located in the display area perpendicular to the substrate is greater than the thickness of the organic insulating layer located in at least one of the second and third areas perpendicular to the substrate.

[0025] In an exemplary embodiment, the first region includes: a plurality of pads; the second region includes: a plurality of connecting electrodes; the third region includes: a plurality of contact pads; the pads include: a first conductive structure, a second conductive structure, and a third conductive structure; the connecting electrodes include: a fourth conductive structure; and the contact pads include: a fifth conductive structure and a sixth conductive structure that are interconnected. The second conductive structure is located on the side of the first conductive structure away from the substrate, the third conductive structure is located on the side of the second conductive structure away from the substrate, the second conductive structure is electrically connected to the first conductive structure and the third conductive structure respectively, at least one film layer of the touch interlayer insulating layer and the touch buffer layer is located between the third conductive structure and the second conductive structure, and the organic insulating layer and at least one film layer of the touch interlayer insulating layer and the touch insulating layer are located between the fifth conductive structure and the sixth conductive structure; The orthographic projection of the first conductive structure on the substrate is within the range of the orthographic projection of the second conductive structure on the substrate, and the orthographic projection of the second conductive structure on the substrate is within the range of the orthographic projection of the second conductive structure on the substrate. The orthographic projection of the fifth conductive structure on the substrate and the orthographic projection of the sixth conductive structure on the substrate at least partially overlap. The first conductive structure is located in one of the plurality of gate metal layers, the second conductive structure is located in at least one of the plurality of source / drain metal layers, the third conductive structure is located in the second touch conductive layer, the fourth conductive structure is located in at least one of the plurality of source / drain metal layers, the fifth conductive structure is located in at least one of the plurality of source / drain metal layers, and the sixth conductive structure is located in the second touch conductive layer.

[0026] Secondly, this disclosure also provides a display device, including: the aforementioned display substrate.

[0027] In an exemplary embodiment, it further includes: a sensor assembly, wherein the display substrate includes a hole region; The orthographic projection of the sensor assembly onto the substrate is at least partially located in the aperture region.

[0028] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood. Attached Figure Description

[0029] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0030] Figure 1 This is a schematic diagram of a display substrate according to at least one embodiment of the present disclosure; Figure 2 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 1 ; Figure 3 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 2 ; Figure 4 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 3 ; Figure 5 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 4 ; Figure 6A A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 1 ; Figure 6B A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 2 ; Figure 6C A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 3 ; Figure 6DA schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 4 ; Figure 7 for Figure 6A and Figure 6C Schematic diagram of the cross section along the AA direction; Figure 8 A partial area diagram provided for one exemplary implementation Figure 1 ; Figure 9 for Figure 8 Schematic diagram of the cross section along the AA direction; Figure 10 A partial area diagram provided for one exemplary implementation Figure 2 ; Figure 11 for Figure 10 Schematic diagram of the cross section along the AA direction; Figure 12 A partial area diagram provided for one exemplary implementation Figure 3 ; Figure 13 for Figure 12 Schematic diagram of the cross section along the AA direction; Figure 14 A partial area diagram provided for one exemplary implementation Figure 4 ; Figure 15 for Figure 14 Schematic diagram of the cross section along the AA direction; Figure 16 A partial area diagram provided for one exemplary implementation Figure 5 ; Figure 17 for Figure 16 Schematic diagram of the cross section along the AA direction; Figure 18 A partial area schematic diagram provided for one exemplary implementation is shown in Figure 6. Figure 19 for Figure 18 Schematic diagram of the cross section along the AA direction; Figure 20 A partial area diagram provided for one exemplary implementation Figure 7 ; Figure 21 for Figure 20 Schematic diagram of the cross section along the AA direction; Figure 22A This is a schematic diagram of the structure of the hole region; Figure 22B This is a structural diagram of the border area; Figure 23 for Figure 6A and Figure 6BSchematic diagram of the cross section along the BB direction; Figure 24 for Figure 6A and Figure 6B Schematic diagram of the cross section along the CC direction; Figure 25 for Figure 6A and Figure 6B Schematic diagram of the cross section along the DD direction; Figure 26 This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure. Detailed Implementation

[0031] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. The implementation can be carried out in many different forms. Those skilled in the art will readily understand that the methods and content can be transformed into other forms without departing from the spirit and scope of this disclosure. Therefore, this disclosure should not be construed as limited to the content described in the following embodiments. Unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be arbitrarily combined with each other.

[0032] In the accompanying drawings, the size of one or more constituent elements, the thickness of layers, or areas are sometimes exaggerated for clarity. Therefore, this disclosure is not necessarily limited to these dimensions, and the shape and size of one or more parts in the drawings do not reflect true proportions. Furthermore, the drawings schematically illustrate ideal examples, and this disclosure is not limited to the shapes or values ​​shown in the drawings.

[0033] The ordinal numbers such as "first," "second," and "third" used in this specification are used to avoid confusion among the constituent elements, not to limit the quantity. The term "multiple" in this disclosure refers to two or more quantities.

[0034] In this specification, for convenience, terms such as "middle," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships in conjunction with the accompanying drawings. This is solely for the purpose of facilitating the description and simplification, and does not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this disclosure. The positional relationships of the constituent elements may be appropriately varied depending on the orientation of the constituent elements being described. Therefore, the use of terms not limited to those described in the specification may be appropriately replaced as needed.

[0035] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or joint; a direct connection, an indirect connection via an intermediate component, or a connection within two components. "Joining" can include "electrical connection," which includes situations where constituent elements are connected together by a component having some electrical function. There are no particular limitations on the term "component having some electrical function," as long as it allows for the transmission of electrical signals between the connected constituent elements. Examples of "component having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other multifunctional components. Those skilled in the art will understand the meaning of the above terms in this disclosure as appropriate.

[0036] In this specification, a transistor is a device that includes at least three terminals: a gate (gate electrode), a drain, and a source. A transistor has a channel region between its drain (drain electrode terminal, drain region, or drain electrode) and its source (source electrode terminal, source region, or source electrode), and current can flow through the drain, the channel region, and the source. In this specification, the channel region refers to the region through which current primarily flows.

[0037] In this specification, the first terminal can be the drain and the second terminal can be the source, or vice versa. Additionally, the gate can also be called the control terminal. In cases where transistors with opposite polarities are used or where the current direction changes during circuit operation, the functions of the "source" and "drain" are sometimes interchanged. Therefore, in this specification, the "source" and "drain" can be interchanged.

[0038] In this specification, "parallel" refers to the state where the angle formed by two straight lines is greater than or equal to -10° and less than 10°, and therefore also includes the state where the angle is greater than or equal to -5° and less than 5°. Similarly, "perpendicular" refers to the state where the angle formed by two straight lines is greater than or equal to 80° and less than 100°, and therefore also includes the state where the angle is greater than or equal to 85° and less than 95°.

[0039] In this specification, circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons are not strictly defined. They can be approximate circles, ellipses, triangles, rectangles, trapezoids, pentagons, or hexagons. Small deformations due to tolerances are possible, such as chamfers, curved edges, and other variations.

[0040] In this specification, "approximately" and "roughly" mean without strictly defined limits, allowing for errors in the process and measurement. In this disclosure, "roughly the same" means that the values ​​differ by no more than 10%.

[0041] In this specification, "A extends along direction B" means that A may include a main part and a secondary part connected to the main part. The main part is a line, line segment, or strip-shaped solid. The main part extends along direction B, and the length of the main part extending along direction B is greater than the length of the secondary part extending along other directions. In this specification, "A extends along direction B" refers to "the main part of A extends along direction B".

[0042] The phrase "A and B are of the same layer" in this specification means that A and B are formed simultaneously through the same drafting process. "Same layer" does not always mean that the layer thickness or layer height is the same in the cross-sectional view. "The orthographic projection of A includes the orthographic projection of B" means that the orthographic projection of B falls within the orthographic projection area of ​​A, or the orthographic projection of A covers the orthographic projection of B.

[0043] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of those features.

[0044] In embodiments of this disclosure, the thickness of a component refers to the dimension of the component in a direction perpendicular to the substrate.

[0045] Figure 1 This is a schematic diagram of a display substrate according to at least one embodiment of the present disclosure. In an exemplary embodiment, such as Figure 1 As shown, the display substrate can be a closed polygon including linear edges. The display substrate may include a display area AA, a border area BB, and a hole area VV. The border area BB surrounds the outer side of the display area, and the hole area VV is at least partially surrounded by the display area AA. For example, the display area AA may include a first display edge (lower display edge) and a second display edge (upper display edge) disposed opposite each other in a first direction D1, and a third display edge (left display edge) and a fourth display edge (right display edge) disposed opposite each other in a second direction D2. The first and second display edges can be parallel linear edges, and the third and fourth display edges can also be parallel linear edges. Adjacent linear edges can be connected by curved edges (e.g., arcuate edges).

[0046] In an exemplary embodiment, the hole region VV can be circular. The hole region VV can also adopt other suitable shapes, not limited to a circle. Furthermore, the location of the hole region VV is not limited to the center of the display area and can be set as needed.

[0047] In an exemplary embodiment, at least a portion of the structure within the hole region VV is removed. For example, all the structure within the hole region VV of the display substrate is removed. For example, after forming the encapsulation layer, a hole-punching process is performed to remove the portion of the display substrate located in the hole region VV.

[0048] In an exemplary embodiment, the display device may further include a sensor assembly, wherein the sensor may be disposed within the aperture region VV, or may be disposed entirely within the aperture region. Exemplarily, the sensor may include a camera.

[0049] In an exemplary implementation, such as Figure 1 As shown, the border area may include a binding area. The binding area may be connected to the first display edge.

[0050] In an exemplary implementation, such as Figure 1 As shown, the bezel area may further include: the upper bezel area of ​​the display substrate, the left bezel area of ​​the display substrate, and the right bezel area of ​​the display substrate. However, this embodiment is not limited to this.

[0051] In an exemplary implementation, such as Figure 1 As shown, the lower border area located on one side of the display area may include: a fan-out area B2, a bent area B3, and a signal access area B1 arranged sequentially along the side away from the display area AA in the first direction D1. The fan-out area B2 may communicate with the left and right border areas and connect to the display area AA. The bent area B3 may connect the fan-out area B2 and the signal access area B1. The bent area B3 may be configured to bend the signal access area B1 to the back of the display area AA.

[0052] In an exemplary implementation, such as Figure 1As shown, the display area AA of the display substrate may include at least: multiple sub-pixels PX, multiple gate lines GL, and multiple data lines DL. The multiple gate lines GL may extend along a first direction D1 and be arranged along a second direction D2; the multiple data lines DL may extend along the second direction D2 and be arranged along the first direction D1. The multiple data lines DL may be electrically connected to the multiple sub-pixels PX, and the multiple data lines DL may be configured to provide data signals to the multiple sub-pixels PX. The multiple gate lines GL may be electrically connected to the multiple sub-pixels PX, and the multiple gate lines GL may be configured to provide pixel control signals to the multiple sub-pixels PX. For example, the pixel control signals may include scan signals, or may include scan signals and light emission control signals, or may include scan signals, reset control signals, and light emission control signals.

[0053] In an exemplary embodiment, the first direction D1 may be the extension direction of the grid line GL within the display area AA (e.g., the row direction); the second direction D2 may be the extension direction of the data line within the display area AA (e.g., the column direction). The first direction D1 and the second direction D2 may intersect each other, for example, they may be perpendicular to each other.

[0054] In an exemplary embodiment, a pixel unit of the display area AA may include three sub-pixels, which may be a first sub-pixel emitting a first color light (e.g., red light), a second sub-pixel emitting a second color light (e.g., blue light), and a third sub-pixel emitting a third color light (e.g., green light). However, this embodiment is not limited thereto. In an exemplary embodiment, a pixel unit may include four sub-pixels, which may be a sub-pixel emitting red light, a sub-pixel emitting green light, a sub-pixel emitting blue light, and a sub-pixel emitting white light. For example, a pixel unit may include four sub-pixels, which may include one sub-pixel emitting red light, one sub-pixel emitting blue light, and two sub-pixels emitting green light.

[0055] In an exemplary embodiment, a sub-pixel may include a pixel driving circuit and a light-emitting element electrically connected to the pixel driving circuit. The pixel driving circuit may include multiple transistors and at least one capacitor. For example, the pixel driving circuit may be a 3T1C, 4T1C, 5T1C, 5T2C, 6T1C, 7T1C, or 8T1C structure. In the above circuit structures, T refers to a thin-film transistor, C refers to a capacitor, the number before T represents the number of thin-film transistors in the circuit, and the number before C represents the number of capacitors in the circuit. In an exemplary embodiment, the multiple transistors in the pixel driving circuit may include P-type transistors and N-type transistors. In other examples, the multiple transistors in the pixel driving circuit may be either P-type transistors or N-type transistors. Using the same type of transistors in the pixel driving circuit can simplify the process flow, reduce the processing difficulty of the display substrate, and improve the product yield.

[0056] In an exemplary embodiment, the shape of the light-emitting element of a sub-pixel can be rectangular, rhomboid, pentagonal, or hexagonal. When a pixel unit includes three sub-pixels, the light-emitting elements of the three sub-pixels can be arranged horizontally side-by-side, vertically side-by-side, or in a triangular arrangement; when a pixel unit includes four sub-pixels, the light-emitting elements of the four sub-pixels can be arranged horizontally side-by-side, vertically side-by-side, or in a square arrangement. However, this embodiment is not limited in this respect.

[0057] In an exemplary embodiment, the light-emitting element can be any of the following: a light-emitting diode (LED), an organic light-emitting diode (OLED), a quantum dot light-emitting diode (QLED), or a micro-LED (including mini-LED or micro-LED). For example, the light-emitting element can be an OLED, which can emit red, green, blue, or white light under the drive of its corresponding pixel driving circuit. The color of the light emitted by the light-emitting element can be determined as needed. In an exemplary embodiment, the light-emitting element may include an anode, a cathode, and an organic light-emitting layer located between the anode and the cathode. The anode of the light-emitting element can be electrically connected to the corresponding pixel driving circuit. However, this embodiment is not limited in this respect.

[0058] The display substrate in this example can integrate a touch structure, such as an integrated mutual capacitance touch structure, to form an FMLOC structure.

[0059] In an exemplary embodiment, the display substrate may include a substrate and a circuit structure layer and a light-emitting structure layer sequentially disposed on the substrate. The circuit structure layer includes a pixel driving circuit located in the display area, and the light-emitting structure layer includes a light-emitting element located in the display area.

[0060] In an exemplary embodiment, the display substrate may further include at least one film layer selected from the encapsulation structure layer and the touch structure layer, without any limitation thereof.

[0061] In an exemplary embodiment, the display area includes multiple sub-pixels and multiple data lines DL. The fan-out area includes a fan-out trace FL. At least one fan-out trace FL is electrically connected to at least one data line DL.

[0062] In an exemplary embodiment, the bending region can connect the fan-out region and the signal access region, and at least a data lead can be provided on the bending region. One end of the data lead can be connected to the fan-out trace in the fan-out region, and the other end can be connected to the signal access region. Exemplarily, multiple data leads can be in the same layer, or multiple data leads can have different structures.

[0063] Figure 2 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 1 , Figure 2 The diagram illustrates the structure of a sub-pixel within the display area. In this example, the pixel driving circuit includes a low-temperature polysilicon thin-film transistor.

[0064] In an exemplary implementation, such as Figure 2As shown, the circuit structure layer 12 may include: a semiconductor layer, a first gate metal layer, a second gate metal layer, a first source / drain metal layer, and a second source / drain metal layer disposed on the substrate 10. A first insulating layer 101 (which may be called a buffer layer) may be disposed between the substrate and the semiconductor layer; a second insulating layer 102 (which may be called a first gate insulating layer) may be disposed between the semiconductor layer and the first gate metal layer; a third insulating layer 103 (which may be called a second gate insulating layer) may be disposed between the first gate metal layer and the second gate metal layer; a fifth insulating layer 105 (which may be called an interlayer insulating layer) may be disposed between the second gate metal layer and the first source / drain metal layer; a sixth insulating layer 106 (which may also be called a passivation layer) and a seventh insulating layer 107 (which may also be called a first planarization layer) may be disposed between the first source / drain metal layer and the second source / drain metal layer, wherein the seventh insulating layer 107 may be located on the side of the sixth insulating layer 106 away from the substrate 10; and an eighth insulating layer 108 (which may also be called a second planarization layer) may be disposed on the side of the second source / drain metal layer away from the substrate 10. In this embodiment, the first insulating layer 101, the second insulating layer 102, the third insulating layer 103, the fifth insulating layer 105, and the sixth insulating layer 106 can be inorganic insulating layers, while the seventh insulating layer 107 and the eighth insulating layer 108 can be organic insulating layers. This disclosure uses a display substrate comprising two gate metal layers and two source / drain metal layers as an example. However, this embodiment is not limited to this. In other examples, a bottom shielding metal (BSM) can be disposed on the side of the first insulating layer near the substrate. The bottom shielding metal can be configured to at least partially cover the active layer of the transistor in the pixel driving circuit to prevent external light from affecting the performance of the transistor. In other examples, only the sixth or seventh insulating layer can be disposed between the first and second source / drain metal layers.

[0065] In an exemplary implementation, such as Figure 2 As shown, the semiconductor layer may include at least: a first active layer 210 of transistor 21 located in the display area. The first active layer 210 of transistor 21 may include: a first region 2101, a second region 2102, and a channel region 2100 located between the first region 2101 and the second region 2102. The first gate metal layer may include at least: a first gate 213 of transistor 21 located in the display area and a first electrode 231 of capacitor 23. The orthographic projection of the first gate 213 of transistor 21 onto the substrate 10 may cover the orthographic projection of the channel region 2100 of the first active layer 210 onto the substrate 10. The second gate metal layer may include at least: a second electrode 232 of capacitor 23 located in the display area and a third gate 224 of second-type transistor 22. The orthographic projections of the second electrode 232 and the first electrode 231 of capacitor 23 onto the substrate 10 may at least partially overlap, for example, they may coincide.

[0066] In an exemplary implementation, such as Figure 2 As shown, the first source-drain metal layer of the display area may include at least a first source 211 and a first drain 212 of the transistor 21 located in the display area. The fifth insulating layer 105 may have multiple pixel vias (e.g., including a first pixel via and a second pixel via) in the display area. The fifth insulating layer 105, third insulating layer 103, second insulating layer 102, and first insulating layer 101 within the first pixel via can be removed, exposing at least a portion of the surface of the first region 2101 of the first active layer 210; the fifth insulating layer 105, third insulating layer 103, second insulating layer 102, and first insulating layer 101 within the second pixel via can be removed, exposing at least a portion of the surface of the second region 2102 of the first active layer 210. The first source 211 of the transistor 21 can be electrically connected to the first region 2101 of the first active layer 210 through the first pixel via, and the first drain 212 can be electrically connected to the second region 2102 of the first active layer 210 through the second pixel via. The second source / drain metal layer may include at least a first transition electrode 241. The first transition electrode 241 can be electrically connected to the first drain 212 of the transistor 21 of the pixel driving circuit through a fifth pixel via formed by the sixth insulating layer 106 and the seventh insulating layer 107. In this example, the first transition electrode 241 can be used to achieve the electrical connection between the pixel driving circuit and the light-emitting element.

[0067] In an exemplary embodiment, the gate lines of the display area may be located, for example, in the first gate metal layer and the second gate metal layer; the data lines of the display area may be located, for example, in the second source-drain metal layer; and the first power lines of the display area may be located, for example, in the second source-drain metal layer. This embodiment is not limited in this respect.

[0068] In an exemplary implementation, such as Figure 2As shown, the light-emitting structure layer 13 may include a pixel definition layer 134 and multiple light-emitting elements located in the display area. For example, each light-emitting element may include a first electrode 131, an organic light-emitting layer 132, and a second electrode 133 stacked together. The first electrode 131 of the light-emitting element can be an anode, and the first electrode 131 can be disposed on an eighth insulating layer 108 and electrically connected to a first transition electrode 241 through a sixth pixel via formed in the eighth insulating layer 108. The pixel definition layer 134 is disposed on the first electrode 131 and the eighth insulating layer 108, and the pixel definition layer 134 may have multiple pixel openings, one pixel opening exposing at least a portion of the surface of a corresponding first electrode 131. At least a portion of the organic light-emitting layer 132 can be disposed within a pixel opening and connected to the corresponding first electrode 131. The second electrode 133 can be disposed on the organic light-emitting layer 132 and connected to the organic light-emitting layer 132. The organic light-emitting layer 132 can emit light of a corresponding color under the drive of the first electrode 131 and the second electrode 133.

[0069] In an exemplary embodiment, the light-emitting structure layer may include: an anode layer, an organic material layer, and a cathode layer. The anode layer includes: a first electrode of at least one light-emitting element located in the display area. The organic material layer includes: an organic light-emitting layer of at least one light-emitting element located in the display area. The cathode layer includes: a second electrode of at least one light-emitting element located in the display area.

[0070] In an exemplary embodiment, the organic light-emitting layer 132 of the light-emitting element may include an emitting layer (EML) and at least one of the following film layers: a hole injection layer (HIL), a hole transport layer (HTL), a hole block layer (HBL), an electron block layer (EBL), an electron injection layer (EIL), and an electron transport layer (ETL). Under the voltage drive of the first electrode 131 and the second electrode 133, the light-emitting characteristics of the organic material can be utilized to emit light at the required grayscale.

[0071] In exemplary embodiments, the light-emitting layers of light-emitting elements of different colors can be different. For example, a red light-emitting element includes a red light-emitting layer, a green light-emitting element includes a green light-emitting layer, and a blue light-emitting element includes a blue light-emitting layer. To reduce process complexity and improve yield, the hole injection layer and hole transport layer on one side of the light-emitting layer can be common layers, and the electron injection layer and electron transport layer on the other side of the light-emitting layer can also be common layers. In exemplary embodiments, any one or more of the hole injection layer, hole transport layer, electron injection layer, and electron transport layer can be fabricated in a single process (single vapor deposition process or single inkjet printing process), and isolation can be achieved through surface steps of the formed film layers or through surface treatment. For example, any one or more of the hole injection layer, hole transport layer, electron injection layer, and electron transport layer corresponding to adjacent sub-pixels can be isolated. In exemplary embodiments, the organic light-emitting layer can be formed by vapor deposition using a fine metal mask (FMM) or an open mask, or by inkjet printing.

[0072] In an exemplary implementation, such as Figure 2 As shown, the encapsulation structure layer 14 may include a first encapsulation layer 141, a second encapsulation layer 142, and a third encapsulation layer 143 stacked together. The first encapsulation layer 141 and the third encapsulation layer 143 may be made of inorganic materials, such as silicon nitride, silicon oxide, or silicon oxynitride. Inorganic materials have high density and can prevent the intrusion of water, oxygen, etc. The second encapsulation layer 142 may be disposed between the first encapsulation layer 141 and the third encapsulation layer 143 to ensure that external moisture cannot enter the light-emitting element. The second encapsulation layer 142 may be made of organic materials, for example, it may be a polymer material containing a desiccant or a polymer material that can block moisture, or it may be a polymer resin to planarize the surface of the display substrate and relieve stress on the first encapsulation layer 141 and the third encapsulation layer 143. It may also include a desiccant or other water-absorbing material to absorb water, oxygen, and other substances that have penetrated the interior. However, this embodiment is not limited to this. For example, the encapsulation structure layer may adopt a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0073] In an exemplary embodiment, the touch structure layer of the display area may include: a plurality of first touch electrodes, a plurality of first connecting portions, a plurality of second touch electrodes, and a plurality of second connecting portions. The plurality of first touch electrodes may be disposed in the same layer, and adjacent first touch electrodes may be connected via the first connecting portions. The plurality of second touch electrodes may be disposed in the same layer, and adjacent second touch electrodes may be connected via the second connecting portions.

[0074] In an exemplary implementation, such as Figure 2As shown, in the direction perpendicular to the display substrate, the touch structure layer 15 of the display area may include: a touch buffer layer (TBL) 150, a first touch conductive layer 151, a touch interlayer insulating layer (TLD) 153, a second touch conductive layer 152, and a touch protective layer (TOC) 154, arranged sequentially. The touch buffer layer 150 and the touch interlayer insulating layer 153 can be inorganic insulating layers. For example, the first touch conductive layer 151 may include a plurality of first touch electrodes, a plurality of second touch electrodes, and a plurality of first connecting portions. The first touch electrodes and the first connecting portions can be an integral structure interconnected. The second touch conductive layer 152 may include a plurality of second connecting portions. The second connecting portions can be interconnected with adjacent second touch electrodes through vias formed in the touch interlayer insulating layer 153. However, this embodiment is not limited in this respect. In other examples, the first touch conductive layer may include: a plurality of first touch electrodes, a plurality of second touch electrodes, and a plurality of second connecting portions, wherein the second touch electrodes and the second connecting portions may be an integral structure interconnected with each other; the second touch conductive layer may include a plurality of first connecting portions, which may be interconnected with adjacent first touch electrodes through vias formed in the interlayer insulating layer. In an exemplary embodiment, the first touch electrode may be a driving (Tx) electrode, and the second touch electrode may be a sensing (Rx) electrode. Alternatively, the first touch electrode may be a sensing (Rx) electrode, and the second touch electrode may be a driving (Tx) electrode. This embodiment is not limited in this respect.

[0075] In an exemplary embodiment, the first touch electrode and the second touch electrode may have a rhombus shape, such as a regular rhombus, a horizontally elongated rhombus, or a vertically elongated rhombus. In other examples, the first touch electrode and the second touch electrode may have any one or more of the following shapes: triangle, square, trapezoid, parallelogram, pentagon, hexagon, and other polygons, which are not limited to the embodiments disclosed herein.

[0076] In an exemplary embodiment, the first and second touch electrodes can be in the form of transparent conductive electrodes. In other examples, the first and second touch electrodes can be in the form of a metal mesh, which can be formed by interlacing multiple metal wires. The metal mesh can include multiple mesh patterns, and the mesh patterns can be polygons composed of multiple metal wires. The metal mesh-type first and second touch electrodes have advantages such as low resistance, small thickness, and fast response speed.

[0077] Figure 3 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 2 In an exemplary implementation, such as Figure 3As shown, the circuit structure layer 12 may include: a semiconductor layer, a first gate metal layer, a second gate metal layer, a third gate metal layer, a first source / drain metal layer, and a second source / drain metal layer disposed on the substrate 10. A fourth insulating layer 104 (which may be referred to as the third gate insulating layer) may be disposed between the second gate metal layer and the third gate metal layer; a fifth insulating layer 105 (which may be referred to as the interlayer insulating layer) may be disposed between the third gate metal layer and the first source / drain metal layer. The fourth insulating layer 104 may be an inorganic insulating layer. This disclosure is based on an example of a display substrate comprising three gate metal layers and two source / drain metal layers. However, this embodiment is not limited thereto. The remaining structure of the display area of ​​the display substrate in this example can be referred to... Figure 2 The description of the illustrated embodiment is omitted here.

[0078] In an exemplary embodiment, the third gate metal layer may include a third electrode 233 of a capacitor located in the display area. The third electrode 233 is connected to the first electrode 231, and its orthographic projection on the substrate 10 at least partially overlaps with the orthographic projection of the second electrode 232 on the substrate 10, for example, they may coincide.

[0079] In an exemplary embodiment, the gate lines of the display area may be located in at least one of the first gate metal layer, the second gate metal layer, and the third gate metal layer; the data lines of the display area may be located in the second source-drain metal layer; and the first power lines of the display area may be located in the second source-drain metal layer. This embodiment is not limited in this respect.

[0080] Figure 4 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 3 In an exemplary implementation, such as Figure 4 As shown, the circuit structure layer 12 may include: a semiconductor layer, a first gate metal layer, a second gate metal layer, a first source / drain metal layer, a second source / drain metal layer, and a third source / drain metal layer disposed on the substrate 10. An eighth insulating layer 108 (which may also be called a second planarization layer) may be disposed between the second and third source / drain metal layers, and a ninth insulating layer 109 (which may also be called a third planarization layer) may be disposed on the side of the third source / drain metal layer away from the substrate 10. This disclosure is illustrated using a display substrate comprising two gate metal layers and three source / drain metal layers as an example. In this example, the electrical connection between the pixel driving circuit and the light-emitting element can be achieved through the first transition electrode 241 and the second transition electrode 242. For the remaining structure of the display area of ​​the display substrate in this example, please refer to... Figure 2 The description of the illustrated embodiment is omitted here.

[0081] In an exemplary embodiment, the gate lines of the display area may be located, for example, in the first gate metal layer and the second gate metal layer; the data lines of the display area may be located, for example, in the second source-drain metal layer or the third source-drain metal layer; and the first power line of the display area may be located, for example, in the second source-drain metal layer or the third source-drain metal layer. This embodiment is not limited in this respect.

[0082] Figure 5 This is a partial cross-sectional view of the display area of ​​at least one embodiment of the present disclosure. Figure 4 In an exemplary implementation, such as Figure 5 As shown, the circuit structure layer 12 may include: a semiconductor layer, a first gate metal layer, a second gate metal layer, a third gate metal layer, a first source / drain metal layer, a second source / drain metal layer, and a third source / drain metal layer disposed on the substrate 10. A fourth insulating layer 104 (which may be called a third gate insulating layer) may be disposed between the second and third gate metal layers, an eighth insulating layer 108 (which may also be called a second planarization layer) may be disposed between the second and third source / drain metal layers, and a ninth insulating layer 109 (which may also be called a third planarization layer) may be disposed on the side of the third source / drain metal layer away from the substrate 10. The fourth insulating layer 104 may be an inorganic insulating layer. This disclosure is based on an example of a display substrate including three gate metal layers and three source / drain metal layers. In this example, the electrical connection between the pixel circuit and the light-emitting element can be achieved through the first transfer electrode 241 and the second transfer electrode 242. For the remaining structure of the display area of ​​the display substrate in this example, please refer to... Figure 2 and Figure 3 The description of the illustrated embodiment is omitted here.

[0083] With the continuous advancement of technology and the rapid development of flexible AMOLED products, the market share of flexible display products is gradually increasing, and the quality requirements for flexible AMOLED display products in the end-user market are also becoming increasingly stringent. The display substrate in an AMOLED display product includes a driver chip and a flexible circuit board. The driver chip and flexible circuit board are bonded to the signal access area located at the bottom of the display substrate. The signal access area contains an inorganic layer, an organic layer, and signal traces. When the display substrate bonds the driver chip and flexible circuit board, they come into contact with the signal access area. Under external force, the driver chip and flexible circuit board adhere to the signal access area, completing the normal display of the display substrate. However, during the bonding process, the external force can cause cracks in some of the inorganic layer in the signal access area. In this case, during reliability testing of the display substrate, not only will the normal operation of the signal traces be affected, but moisture can also diffuse into the organic layer of the signal access area, causing partial peeling of the film layer in the signal access area, resulting in display abnormalities and reducing the reliability of the display substrate.

[0084] Therefore, this disclosure provides a display substrate. Figure 6A A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 1 , Figure 6B A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 2 , Figure 6C A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 3 , Figure 6D A schematic diagram of a portion of the display substrate provided in an embodiment of this disclosure. Figure 4 , Figure 7 for Figure 6A and Figure 6C A schematic diagram of the cross-section along the AA direction. Figures 6A to 6D It means Figure 1 A partial schematic diagram of the signal access area. (Combined with...) Figure 1 , Figures 6A to 6D and Figure 7 As shown, the display substrate provided in this embodiment may include a display area, a bezel area, and a hole area. The display substrate includes a driver chip and a flexible circuit board. The display area is disposed around the hole area, and the bezel area surrounds the outer side of the display area. The bezel area includes a first area B11, a second area B12, and a third area B13 arranged sequentially in a direction away from the display area. The driver chip is bonded to the first area B11, and the flexible circuit board is bonded to the third area B13.

[0085] In an exemplary implementation, such as Figure 6A , Figure 6C and Figure 7 As shown, the display substrate includes a substrate 10 and an organic insulating layer 41 disposed on the substrate 10. At least a portion of the organic insulating layer 41 is located in the display area, the second area B12, and the third area B13. The organic insulating layer 41 located in the second area B12 is provided with at least one first through hole H1. The first through hole H1 extends along a first direction D1, which intersects with a second direction D2. The second direction D2 is the arrangement direction of the first area B11, the second area B12, and the third area B13.

[0086] In an exemplary embodiment, the substrate 10 may include a substrate made of materials such as plastic materials, stainless steel foil, and flexible glass. The plastic material may include polyimide, which has good temperature resistance and chemical stability.

[0087] In an exemplary implementation, such as Figure 7As shown, the signal access area further includes a composite inorganic insulating layer 42 and a metal conductive layer 43. The composite inorganic insulating layer 42 is located on the side of the metal conductive layer 43 closest to the substrate, and the metal conductive layer 43 is located between the composite inorganic insulating layer 43 and the organic insulating layer 41. The composite inorganic insulating layer 42 includes at least one of a plurality of inorganic insulating layers located between at least one source / drain metal layer in the circuit structure layer and the substrate. The metal conductive layer 43 includes at least one of a plurality of source / drain metal layers.

[0088] In an exemplary implementation, such as Figures 6A to 6D As shown, the first region B11 may include multiple pads 110. The driver chip is electrically connected to the multiple pads, and the multiple pads are electrically connected to multiple data leads located in the bending region.

[0089] In an exemplary embodiment, the third region B13 may include a plurality of contact pads 130. The flexible circuit board 32 is electrically connected to the plurality of contact pads 130.

[0090] In an exemplary embodiment, the second region B12 may include a plurality of connection electrodes 120. At least one connection electrode 120 is electrically connected to at least one pad 110 and at least one contact pad 130, respectively.

[0091] In an exemplary embodiment, the metal conductive layer 43 includes at least a portion of at least one pad 110, at least a portion of at least one interconnect electrode 120, and at least a portion of at least one contact pad 130. The at least one interconnect electrode is electrically connected to the driver chip via at least one pad and to the flexible circuit board via at least one contact pad.

[0092] This disclosure provides a first via in the organic insulating layer located in the second region. When a reliability test is performed on a display substrate with cracks in the inorganic layer of the signal access region, the presence of the first via reduces the volume of the organic insulating layer, and the organic insulating layer is interrupted in some areas. Even if some film layers are cracked, moisture will not completely diffuse to the entire organic insulating layer, thereby interrupting the peeling of some film layers and preventing it from spreading to other areas of the display region. This ensures the normal display of the display substrate and also improves the reliability safety margin and reliability of the display substrate.

[0093] The film material in the border area of ​​the display substrate provided in this embodiment has not changed, that is, the process flow of the display substrate has not changed.

[0094] In an exemplary embodiment, the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 can be greater than or equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1. Here, the first boundary HB1 is the boundary of the first through hole H1 near the display area, and the second boundary HB2 is the boundary of the first through hole H1 away from the display area. Figure 6A and Figure 6B The explanation is based on the example that the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1. Figure 6C and Figure 6D The explanation is based on the example that the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is greater than the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1.

[0095] In an exemplary embodiment, when the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the cross-sectional shape of the first through hole H1 along the plane parallel to the substrate can be rectangular.

[0096] In an exemplary embodiment, when the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is greater than the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the extending direction of the side of the first through hole H1 intersects the first direction and the second direction, and the side of the first through hole H1 is inclined. The inclination of the side of the first through hole H1 can prevent water and oxygen intrusion from the side and can counteract stress from the left and right sides.

[0097] In an exemplary embodiment, Figure 6A and Figure 6C This explanation uses one through hole as an example. Figure 6B and Figure 6D This explanation is based on the example of two first through holes. When there are two first through holes, the first through hole to the Mth first through hole are arranged sequentially in the direction away from the display area, where M is a positive integer greater than or equal to 2.

[0098] In an exemplary implementation, such as Figure 6B As shown, when the number of first through holes is greater than or equal to 2, and the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the length of the first boundary of the (m+1)th first through hole along the first direction is equal to the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

[0099] In an exemplary implementation, such as Figure 6D As shown, when the number of first through holes is greater than or equal to 2, and the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is greater than the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the length of the first boundary of the (m+1)th first through hole along the first direction is less than the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

[0100] In an exemplary implementation, such as Figure 6D As shown, the display substrate may further include: a first connecting hole Q1 and a second connecting hole Q2; the extending direction of at least one of the first connecting hole Q1 and the second connecting hole Q2 intersects with the first direction D2 and the second direction D2, respectively. The first connecting hole Q1 and the second connecting hole Q2 are respectively located on two opposite sides of at least one first through hole, and the first connecting hole Q1 and the second connecting hole Q2 are respectively connected to the first first through hole to the Mth first through hole.

[0101] The arrangement of the first connecting hole Q1 and the second connecting hole Q2 in this disclosure can prevent water and oxygen intrusion from the sides and can counteract stress from the left and right sides.

[0102] In an exemplary implementation, such as Figure 6A and Figure 6C As shown, at least one of the following lengths is greater than the length L1 of the region where the plurality of pads 110 arranged along the first direction D1 in the first region B11 are located along the first direction D1: at least one of the following lengths: L2 of the region where the plurality of connecting electrodes 120 arranged along the first direction D1 in the second region B12 are located along the first direction D1: at least one of the following lengths:

[0103] In an exemplary implementation, such as Figure 6A As shown, when the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the maximum length L1 of at least one first through hole H1 along the first direction D1 is equal to the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 and the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1.

[0104] In an exemplary implementation, such as Figure 6CAs shown, when the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is greater than the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1, the maximum length L1 of at least one first through hole H1 along the first direction D1 is equal to the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1.

[0105] In an exemplary embodiment, the plurality of pads includes a plurality of input pads and a plurality of output pads. The plurality of input pads are used to input signals to the driver chip, and the plurality of output pads are used to receive signals converted by the driver chip. The plurality of output pads are connected to data leads and configured to provide data signals to the data leads.

[0106] In an exemplary embodiment, multiple input pads are located on the side of multiple output pads closest to the display area. The multiple input pads are arranged in an array. The multiple output pads are arranged along a first direction. The multiple input pads and multiple output pads may be staggered in a second direction. For example, input pads and output pads in the same row may not be aligned. This disclosure does not specifically limit the inclusion of pad data in the first and second regions.

[0107] In an exemplary embodiment, Figure 8 A partial area diagram provided for one exemplary implementation Figure 1 , Figure 9 for Figure 8 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 8 and Figure 9 As shown, there is one first through-hole H1, which includes a first opening A1 located on the surface of the organic insulating layer 41 near the substrate 10. The distance W11 between the side of the first opening A1 of the first through-hole H1 near the display area AA and the first area B11 along the second direction D2 is equal to the distance W12 between the side of the first opening A1 of the first through-hole H1 away from the display area AA and the third area B13 along the second direction D2.

[0108] This disclosure improves the reliability of the display substrate by setting the distance W11 between the first opening A1 of the first through hole H1 near the display area AA and the first area B11 along the second direction D2 to be equal to the distance W12 between the first opening A1 of the first through hole H1 away from the display area AA and the third area B13 along the second direction D2, thereby balancing the stress on both sides of the first through hole H1.

[0109] In an exemplary embodiment, Figure 10 A partial area diagram provided for one exemplary implementation Figure 2 , Figure 11 for Figure 10A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 10 and Figure 11 As shown, there is one first through-hole H1, which includes a first opening A1 located on the surface of the organic insulating layer 41 near the substrate 10. The distance W11 between the side of the first opening A1 of the first through-hole H1 near the display area AA and the first area B11 along the second direction D2 is greater than the distance W12 between the side of the first opening A1 of the first through-hole H1 away from the display area AA and the third area B13 along the second direction D2.

[0110] In an exemplary embodiment, the distance W11 between the side of the first opening A1 of the first through hole H1 that is close to the display area AA and the first area B11 along the second direction D2 is less than twice the distance W12 between the side of the first opening A1 of the first through hole H1 that is far from the display area AA and the third area B13 along the second direction D2.

[0111] In this disclosure, the distance W11 between the first opening A1 of the first through hole H1 near the display area AA and the first area B11 along the second direction D2 is greater than the distance W12 between the first opening A1 of the first through hole H1 away from the display area AA and the third area B13 along the second direction D2. This makes the first opening A1 of the first through hole H1 farther away from the first area and the display area, thus preventing moisture from entering the display area in advance and ensuring the reliability of the connection between the connecting electrode and the pad. This further ensures the normal display of the display substrate and also improves the reliability and safety margin of the display substrate.

[0112] In an exemplary embodiment, Figure 12 A partial area diagram provided for one exemplary implementation Figure 3 , Figure 13 for Figure 12 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 12 and Figure 13 As shown, there is one first through-hole H1, which includes a first opening A1 located on the surface of the organic insulating layer 41 near the substrate 10. The distance W11 between the side of the first opening A1 of the first through-hole H1 near the display area AA and the first area B11 along the second direction D2 is less than the distance W12 between the side of the first opening A1 of the first through-hole H1 away from the display area AA and the third area B13 along the second direction D2.

[0113] In an exemplary embodiment, the distance W12 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the third area B13 along the second direction D2 is less than twice the distance W11 between the side of the first opening A1 of the first through hole H1 near the display area AA and the first area B11 along the second direction D2.

[0114] In this disclosure, the distance W11 between the first opening A1 of the first through hole H1 near the display area AA and the first area B11 along the second direction D2 is less than the distance W12 between the first opening A1 of the first through hole H1 away from the display area AA and the third area B13 along the second direction D2. This makes the first opening A1 of the first through hole H1 closer to the third area, which can ensure the reliability of the connection between the connecting electrode and the contact pad, and can also better isolate water and oxygen intrusion from the third area.

[0115] In an exemplary embodiment, the number of first through holes H1 can be M, where M is a positive integer greater than or equal to 2. The first through holes H1 to the Mth first through holes H1 are arranged sequentially along the direction away from the display area AA, and at least two first through holes H1 have the same or different maximum lengths along the second direction D2.

[0116] In an exemplary embodiment, the number of first through holes H1 is greater than or equal to two, which can further reduce the volume of the organic insulating layer.

[0117] In an exemplary embodiment, having at least two first through holes H1 with equal maximum lengths along the second direction D2 ensures the uniformity of etching on the display substrate.

[0118] In an exemplary embodiment, the fact that the maximum lengths of at least two first through holes H1 along the second direction D2 are not equal can improve the degree of water vapor isolation of the display substrate, thereby further improving the display effect of the display substrate.

[0119] In an exemplary embodiment Figure 14 A partial area diagram provided for one exemplary implementation Figure 4 , Figure 15 for Figure 14 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 14 and Figure 15 As shown, when M=2, and the maximum length of the first through hole H1 along the second direction D2 is equal to the maximum length of the second through hole H1 along the second direction D2, the distance W21 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first area B11 away from the display area AA along the second direction D2 is equal to the distance W22 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third area B13 near the display area AA along the second direction D2, and equal to the distance W23 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA along the second direction D2.

[0120] This disclosure sets the distance W21 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA, which is equal to the distance W22 along the second direction D2 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third region B13 near the display area AA, and is also equal to the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA. This ensures that the first opening A1 of the multiple first through holes H1 is located in the middle of the second region B12, guaranteeing stress balance on both sides of the first through hole H1 and improving the reliability of the display substrate.

[0121] In an exemplary embodiment Figure 16 A partial area diagram provided for one exemplary implementation Figure 5 , Figure 17 for Figure 16 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 16 and Figure 17 As shown, when M=2, and the maximum length of the first through hole H1 along the second direction D2 is equal to the maximum length of the second through hole H1 along the second direction D2, the distance W23 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA along the second direction D2 is greater than the distance W21 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first area B11 away from the display area AA along the second direction D2, and less than the distance W22 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third area B13 near the display area AA along the second direction D2.

[0122] In an exemplary embodiment, the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA is less than twice the distance W21 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first area B11 away from the display area AA.

[0123] In an exemplary embodiment, the distance W22 between the side of the first opening A1 of the second first through hole H1 away from the display area AA and the side of the third area B13 near the display area AA along the second direction D2 is less than twice the distance W23 between the side of the first opening A1 of the first first through hole H1 away from the display area AA and the side of the first opening A1 of the second first through hole H1 near the display area AA along the second direction D2.

[0124] This disclosure sets the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA to be greater than the distance W21 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA, and less than the distance W22 along the second direction D2 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third region B13 near the display area AA. This makes the distance between the first opening A1 of the first through hole H1 and the first region and the display area greater, thus preventing moisture from entering the display area in advance and ensuring the reliability of the connection between the connecting electrode and the pad. This further ensures the normal display of the display substrate and also improves the reliability and safety margin of the display substrate.

[0125] In an exemplary embodiment Figure 18 A partial area schematic diagram six is ​​provided as an exemplary embodiment. Figure 19 for Figure 18 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 18 and Figure 19 As shown, when M=2, and the maximum length of the first through hole H1 along the second direction D2 is equal to the maximum length of the second through hole H1 along the second direction D2, the distance W23 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA along the second direction D2 is less than the distance W21 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first area B11 away from the display area AA along the second direction D2, and greater than the distance W22 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third area B13 near the display area AA along the second direction D2.

[0126] In an exemplary embodiment, the distance W21 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first area B11 away from the display area AA is less than twice the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA.

[0127] In an exemplary embodiment, twice the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA is less than twice the distance W22 along the second direction D2 between the side of the first opening A1 of the second through hole H1 away from the display area AA and the side of the third area B13 near the display area AA.

[0128] This disclosure sets the distance W23 along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA to be smaller than the distance W21 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA and the side of the third region B13 near the display area AA. This makes the distance between the first opening A1 of the second through hole H1 and the third region closer, which can ensure the reliability of the connection between the connecting electrode and the contact pad, and can also better isolate water and oxygen intrusion from the third region.

[0129] In an exemplary embodiment Figure 20 A partial area diagram provided for one exemplary implementation Figure 7 , Figure 21 for Figure 20 A schematic diagram of the cross-section along the AA direction. (See attached diagram.) Figure 20 and Figure 21 As shown, when M is greater than or equal to 3, the distance along the second direction D2 between the side of the first opening A1 of the m-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+1)-th first through hole H1 close to the display area AA is equal to the distance along the second direction D2 between the side of the first opening A1 of the (m+1)-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+2)-th first through hole H1 close to the display area AA. m is a positive integer greater than or equal to 1 and less than M-1. Figure 20 and Figure 21 This explanation uses M=3 as an example.

[0130] The distance W31 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA along the second direction D2 is equal to the distance W32 between the side of the first opening A1 of the Mth first through hole H1 away from the display area AA and the side of the third region B13 near the display area AA along the second direction D2, and equal to the distance W33 between the side of the first opening A1 of the mth first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+1)th first through hole H1 near the display area AA along the second direction D2.

[0131] In an exemplary embodiment, the distance W31 along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA is equal to the distance W32 along the second direction D2 between the side of the first opening A1 of the Mth first through hole H1 away from the display area AA and the side of the third region B13 near the display area AA, and is equal to the distance W33 along the second direction D2 between the side of the first opening A1 of the mth first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+1)th first through hole H1 near the display area AA. This ensures stress balance on both sides of the multiple first through holes H1, which can improve the reliability of the display substrate.

[0132] In an exemplary embodiment, when M is greater than or equal to 3, the distance along the second direction D2 between the side of the first opening A1 of the m-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+1)-th first through hole H1 near the display area AA is greater than the distance along the second direction D2 between the side of the first opening A1 of the (m+1)-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+2)-th first through hole H1 near the display area AA. m is a positive integer greater than or equal to 1 and less than M-1. The side of the first opening A1 of the first through hole H1 near the display area AA is further away from the first area B11. The distance along the second direction D2 between the two sides of the display area AA is greater than the distance along the second direction D2 between the side of the first opening A1 of the first first through hole H1 away from the display area AA and the side of the first opening A1 of the second first through hole H1 near the display area AA. The distance along the second direction D2 between the side of the first opening A1 of the Mth first through hole H1 away from the display area AA and the side of the third area B13 near the display area AA is less than the distance along the second direction D2 between the side of the first opening A1 of the (M-1)th first through hole H1 away from the display area AA and the side of the first opening A1 of the Mth first through hole H1 near the display area AA.

[0133] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area is less than twice the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area.

[0134] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the (M-1)th first through hole away from the display area and the side of the first opening of the Mth first through hole near the display area is less than twice the distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region near the display area.

[0135] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the m-th first through hole away from the display area and the side of the first opening of the (m+1)-th first through hole near the display area is less than twice the distance along the second direction between the side of the first opening of the (m+1)-th first through hole away from the display area and the side of the first opening of the (m+2)-th first through hole near the display area.

[0136] In an exemplary embodiment, the distance along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA is greater than the distance along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA. The distance along the second direction D2 between the side of the first opening A1 of the Mth through hole H1 away from the display area AA and the side of the third region B13 near the display area AA is less than the distance along the second direction D2 between the side of the first opening A1 of the (M-1)th through hole H1 away from the display area AA and the side of the first opening A1 of the Mth through hole H1 near the display area AA. This makes the distance between the first opening A1 of the first through hole H1 and the first display area greater, thus preventing moisture from entering the display area in advance and ensuring the reliability of the connection between the connecting electrode and the pad. This further ensures the normal display of the display substrate and also improves the reliability and safety margin of the display substrate.

[0137] In an exemplary embodiment, when M is greater than or equal to 3, the distance along the second direction D2 between the side of the first opening A1 of the m-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+1)-th first through hole H1 near the display area AA is less than the distance along the second direction D2 between the side of the first opening A1 of the (m+1)-th first through hole H1 away from the display area AA and the side of the first opening A1 of the (m+2)-th first through hole H1 near the display area AA. m is a positive integer greater than or equal to 1 and less than M-1. The side of the first opening A1 of the first through hole H1 near the display area AA is closer to the first area B11 than the side of the first opening A1 near the display area AA. The distance along the second direction D2 between the two sides of the display area AA is less than the distance along the second direction D2 between the side of the first opening A1 of the first first through hole H1 away from the display area AA and the side of the first opening A1 of the second first through hole H1 near the display area AA. The distance along the second direction D2 between the side of the first opening A1 of the Mth first through hole H1 away from the display area AA and the side of the third area B13 near the display area AA is greater than the distance along the second direction D2 between the side of the first opening A1 of the (M-1)th first through hole H1 away from the display area AA and the side of the first opening A1 of the Mth first through hole H1 near the display area AA.

[0138] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole near the display area is less than twice the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole near the display area.

[0139] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area is less than twice the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area.

[0140] In an exemplary embodiment, the distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region close to the display area is less than twice the distance along the second direction between the side of the first opening of the (M-1)th first through hole away from the display area and the side of the first opening of the Mth first through hole close to the display area.

[0141] In an exemplary embodiment, the distance along the second direction D2 between the side of the first opening A1 of the first through hole H1 near the display area AA and the side of the first region B11 away from the display area AA is less than the distance along the second direction D2 between the side of the first opening A1 of the first through hole H1 away from the display area AA and the side of the first opening A1 of the second through hole H1 near the display area AA. The distance along the second direction D2 between the side of the first opening A1 of the Mth through hole H1 away from the display area AA and the side of the third region B13 near the display area AA is greater than the distance along the second direction D2 between the side of the first opening A1 of the (M-1)th through hole H1 away from the display area AA and the side of the first opening A1 of the Mth through hole H1 near the display area AA. This makes the distance between the first opening A1 of the Mth through hole H1 and the third region relatively close, which can ensure the reliability of the connection between the connecting electrode and the contact pad, and can also better isolate water and oxygen intrusion from the third region.

[0142] In an exemplary implementation, such as Figure 7 As shown, the orthographic projection of the organic insulating layer 41 on the substrate 10 does not overlap with the orthographic projection of the first region B11 on the substrate 10.

[0143] In an exemplary embodiment Figure 8 , Figure 10 , Figure 12 , Figure 14 , Figure 16 , Figure 18 , Figure 20 This explanation is based on the example that the length W1 of the first boundary HB1 of at least one first through hole H1 along the first direction D1 is equal to the length W2 of the second boundary HB2 of the first through hole H1 along the first direction D1. This disclosure does not impose any limitations on this.

[0144] In an exemplary embodiment Figure 22A This is a schematic diagram of the structure of the hole region. (See diagram below.) Figure 22A As shown, the organic insulating layer 41 located in the hole region VV is provided with at least one second through hole H2. The thickness of the organic insulating layer 41 located in the display area perpendicular to the substrate is greater than the thickness of the organic insulating layer 41 located in the hole region VV perpendicular to the substrate.

[0145] In an exemplary implementation, such as Figure 22A As shown, the hole area VV is provided with multiple isolation pillars BL, and the orthographic projection of at least one second through hole H2 on the substrate 10 is located on the side of the orthographic projection of the multiple isolation pillars BL on the substrate 10 that is away from the display area AA.

[0146] In an exemplary embodiment, the provision of the second through-hole H2 can reduce the impact on the display area when the hole is opened, prevent moisture from entering the display area, and improve the reliability of the display substrate.

[0147] In an exemplary embodiment Figure 22B This is a structural diagram of the border area. (Example) Figure 22B As shown, a gate driving circuit GOA is disposed in the bezel area BB. An organic insulating layer is at least partially located in the bezel area BB, and a third through-hole H3 is also disposed in the organic insulating layer in the bezel area BB. The third through-hole H3 is at least partially disposed around the display area AA, and the orthogonal projection of the third through-hole H3 on the substrate is located on the side of the orthogonal projection of the gate driving circuit GOA on the substrate away from the display area AA. The placement of the third through-hole H3 in this disclosure can reduce the impact on the display area when the display motherboard is cut to form the display substrate, prevent moisture from entering the display area, and improve the reliability of the display substrate.

[0148] In an exemplary embodiment, the display substrate further includes: a circuit structure layer, a light-emitting structure layer, and a touch structure layer sequentially stacked on the substrate 10. The circuit structure layer includes a gate metal layer group and a source / drain metal layer group. The gate metal layer group includes a plurality of gate metal layers sequentially stacked on the substrate 10. The source / drain metal layer group includes a plurality of source / drain metal layers sequentially stacked on the substrate 10. The touch structure layer includes: a first touch conductive layer, an interlayer insulating layer, and a second touch conductive layer. Inorganic insulating layers are disposed between at least two of the gate metal layers and between the gate metal layer group and the source / drain metal layer group. Planarization layers are disposed between at least two of the source / drain metal layers and between the source / drain metal layer group and the light-emitting structure layer.

[0149] In an exemplary embodiment, the organic insulating layer 41 includes a planar layer located between the source / drain metal layer group and the light-emitting structure layer. For Figure 2 and Figure 3 The provided display substrate has an organic insulating layer including a second planarization layer 108, for Figure 4 and Figure 5 The provided display substrate has an organic insulating layer including a third planarization layer 109.

[0150] In an exemplary embodiment, the thickness of the organic insulating layer 41 located in the display area AA perpendicular to the substrate 10 is greater than the thickness of the organic insulating layer 41 located in at least one of the second area B12 and the third area B13 perpendicular to the substrate 10.

[0151] In an exemplary embodiment Figure 23 for Figure 6A and Figure 6B A schematic diagram of the cross-section along the BB direction. (See attached diagram.) Figure 23As shown, the pad 110 includes a first conductive structure 111, a second conductive structure 112, and a third conductive structure 113. The second conductive structure 112 is located on the side of the first conductive structure 111 away from the substrate 10, and the third conductive structure 113 is located on the side of the second conductive structure 112 away from the substrate 10. The second conductive structure 112 is electrically connected to both the first conductive structure 111 and the third conductive structure 113. At least one film layer of the interlayer insulating layer 153 and the touch buffer layer 150 is located between the third conductive structure 113 and the second conductive structure 112.

[0152] like Figure 23 As shown, the orthographic projection of the first conductive structure 111 on the substrate 10 is within the range of the orthographic projection of the second conductive structure 112 on the substrate 10, and the orthographic projection of the second conductive structure 112 on the substrate 10 is within the range of the orthographic projection of the second conductive structure 112 on the substrate 10.

[0153] In an exemplary embodiment, the first conductive structure 111 is located in one of a plurality of gate metal layers.

[0154] In an exemplary embodiment, the second conductive structure 112 is located in at least one of the plurality of source / drain metal layers.

[0155] In an exemplary embodiment, the third conductive structure 113 is located in the second touch conductive layer.

[0156] In an exemplary embodiment, the composite inorganic insulating layer 42 includes at least one inorganic insulating layer located between the first conductive structure and the second conductive structure.

[0157] In an exemplary embodiment, Figure 24 for Figure 6A and Figure 6B A schematic diagram of the cross-section along the CC direction. (See attached diagram.) Figure 24 As shown, the connecting electrode 120 includes a fourth conductive structure 114, with an organic insulating layer 41 located on the side of the fourth conductive structure 114 away from the substrate 10.

[0158] In an exemplary embodiment, the fourth conductive structure 114 is located in at least one of the plurality of source / drain metal layers.

[0159] In an exemplary embodiment, Figure 25 for Figure 6A and Figure 6B A schematic diagram of the cross-section along the DD direction. (See attached diagram.) Figure 25As shown, the third region B13 includes a plurality of contact pads 130. At least one of the plurality of contact pads includes a fifth conductive structure 115 and a sixth conductive structure 116 that are interconnected, wherein the orthographic projection of the fifth conductive structure 115 on the substrate and the orthographic projection of the sixth conductive structure 116 on the substrate at least partially overlap.

[0160] In an exemplary embodiment, at least one of the organic insulating layer 41, the touch interlayer insulating layer 153, and the touch buffer layer 150 is located between the fifth conductive structure 115 and the sixth conductive structure 116.

[0161] In an exemplary embodiment, the fifth conductive structure 115 is located in at least one of the plurality of source / drain metal layers.

[0162] In an exemplary embodiment, the sixth conductive structure 116 is located in the second touch conductive layer.

[0163] In an exemplary embodiment, the organic insulating layer disposed between the fifth conductive structure and the sixth conductive structure can reduce the stress between the film layers containing the fifth and sixth conductive structures and can improve the corrosion resistance of the film layers containing the fifth and sixth conductive structures.

[0164] In an exemplary embodiment, at least one of the second, fourth, and fifth conductive structures includes: N conductive portions sequentially stacked on a substrate; at least one conductive portion is located in one of the multiple source / drain metal layers, and different conductive portions are located in different layers; the orthographic projection of the nth conductive portion on the substrate is within the range of the orthographic projection of the (n+1)th conductive portion on the substrate. Figure 23 Figure 24 and Figure 25 The following description uses at least one of the second, fourth, and fifth conductive structures, comprising two conductive portions, as an example. The second conductive structure includes a first conductive portion 1121 and a second conductive portion 1122. The fourth conductive structure includes a first conductive portion 1211 and a second conductive portion 1222. The fifth conductive structure includes a first conductive portion 1311 and a second conductive portion 1312.

[0165] This disclosure also provides a display device. Figure 26 This is a schematic diagram of the structure of a display device provided in an embodiment of this disclosure. Figure 26 As shown, the display device provided in this embodiment includes: the display substrate 1000 provided in any of the foregoing embodiments, and the implementation principle and effect will not be repeated here.

[0166] In an exemplary implementation, such as Figure 26As shown, the display device may further include: a sensor assembly 2000, the orthographic projection of the sensor assembly 2000 on the substrate being located in the hole region.

[0167] In an exemplary embodiment, the display substrate 1000 can be an OLED display substrate, such as an OLED display substrate with an integrated touch structure. The display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator, or it can be a product or component with both touch and display functions. In an exemplary embodiment, the display device can be a wearable display device, for example, one that can be worn on the human body in some way. For example, the display device can be a smartwatch, smart bracelet, etc. However, this embodiment is not limited to this.

[0168] The accompanying drawings in this disclosure only relate to the structures involved in the embodiments of this disclosure; other structures can be referred to in general design.

[0169] For clarity, the thickness and dimensions of layers or microstructures are enlarged in the accompanying drawings used to describe embodiments of this disclosure. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “below” another element, the element may be located “directly” on or “below” the other element, or there may be intermediate elements present.

[0170] While the embodiments disclosed herein are as described above, the content is merely for the purpose of facilitating understanding of this disclosure and is not intended to limit this disclosure. Any person skilled in the art to which this disclosure pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed herein; however, the scope of patent protection of this disclosure shall still be determined by the scope defined in the appended claims.

Claims

1. A display substrate, characterized in that, include: The display substrate includes a display area and a bezel area. The display substrate includes a driver chip and a flexible circuit board. The bezel area surrounds the outside of the display area. The bezel area includes a first area, a second area, and a third area arranged sequentially along a direction away from the display area. The driver chip is bonded to the first area, and the flexible circuit board is bonded to the third area. The display substrate includes: a substrate and an organic insulating layer disposed on the substrate. At least a portion of the organic insulating layer is located in the display area, the second area, and the third area. The organic insulating layer located in the second area is provided with at least one first through hole. The first through hole extends along a first direction, which intersects with a second direction. The second direction is the arrangement direction of the first area, the second area, and the third area.

2. The display substrate according to claim 1, characterized in that, The length of the first boundary of the at least one first through hole along the first direction is equal to the length of the second boundary of the first through hole along the first direction. The first boundary is the boundary of the first through hole near the display area, and the second boundary is the boundary of the first through hole away from the display area.

3. The display substrate according to claim 2, characterized in that, The number of the first through holes is M, where M is a positive integer greater than or equal to 2, and the first through holes to the Mth through holes are arranged sequentially along the direction away from the display area; The length of the first boundary of the (m+1)th first through hole along the first direction is equal to the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

4. The display substrate according to claim 1, characterized in that, The length of the first boundary of the at least one first through hole along the first direction is greater than the length of the second boundary of the first through hole along the first direction. The first boundary is the boundary of the first through hole near the display area, and the second boundary is the boundary of the first through hole away from the display area.

5. The display substrate according to claim 4, characterized in that, The number of the first through holes is M, where M is a positive integer greater than or equal to 2, and the first through holes to the Mth through holes are arranged sequentially along the direction away from the display area; The length of the first boundary of the (m+1)th first through hole along the first direction is less than the length of the second boundary of the mth first through hole along the first direction, where m is a positive integer greater than or equal to 1 and less than M-1.

6. The display substrate according to claim 5, characterized in that, Also includes: A first connecting hole and a second connecting hole; the extending direction of at least one of the first connecting hole and the second connecting hole intersects the first direction and the second direction, respectively; The first connecting hole and the second connecting hole are respectively located on opposite sides of at least one first through hole, and the first connecting hole and the second connecting hole are respectively connected to the first first through hole to the Mth first through hole.

7. The display substrate according to any one of claims 2 to 6, characterized in that, The first region includes multiple pads arranged in an array, and the second region includes multiple connection electrodes arranged in an array. The driver chip is electrically connected to the multiple pads, and the multiple connection electrodes are electrically connected to the driver chip and the flexible circuit board, respectively. The maximum length of the at least one first via along the first direction is greater than at least one of the lengths of the regions in the first region where the plurality of pads arranged along the first direction are located along the first direction and the lengths of the regions in the second region where the plurality of connecting electrodes arranged along the first direction are located along the first direction.

8. The display substrate according to claim 2 or 4, characterized in that, The number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is equal to the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area.

9. The display substrate according to claim 2 or 4, characterized in that, The number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is greater than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area.

10. The display substrate according to claim 2 or 4, characterized in that, The number of the first through-holes is one, and the first through-hole includes: a first opening located on the surface of the organic insulating layer near the substrate; The distance along the second direction between the side of the first opening of the first through hole near the display area and the first area is less than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the third area.

11. The display substrate according to claim 3 or 5, characterized in that, At least two of the M first through holes have the same or different maximum lengths along the second direction.

12. The display substrate according to claim 11, characterized in that, When M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area is equal to the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area, and is also equal to the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area.

13. The display substrate according to claim 11, characterized in that, When M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area is greater than the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area, and less than the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area.

14. The display substrate according to claim 11, characterized in that, When M=2, and the maximum length of the first through hole along the second direction is equal to the maximum length of the second through hole along the second direction, the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area is less than the distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first area away from the display area, and greater than the distance along the second direction between the side of the first opening of the second through hole away from the display area and the side of the third area near the display area.

15. The display substrate according to claim 11, characterized in that, When M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the m-th first through hole away from the display area and the side of the first opening of the (m+1)-th first through hole close to the display area is equal to the distance along the second direction between the side of the first opening of the (m+1)-th first through hole away from the display area and the side of the first opening of the (m+2)-th first through hole close to the display area. m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is equal to the distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region near the display area, and is also equal to the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole near the display area.

16. The display substrate according to claim 11, characterized in that, When M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole close to the display area is greater than the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole close to the display area. m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is greater than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area. The distance along the second direction between the side of the first opening of the Mth through hole away from the display area and the side of the third region near the display area is less than the distance along the second direction between the side of the first opening of the (M-1)th through hole away from the display area and the side of the first opening of the Mth through hole near the display area.

17. The display substrate according to claim 11, characterized in that, When M is greater than or equal to 3, the distance along the second direction between the side of the first opening of the mth first through hole away from the display area and the side of the first opening of the (m+1)th first through hole close to the display area is less than the distance along the second direction between the side of the first opening of the (m+1)th first through hole away from the display area and the side of the first opening of the (m+2)th first through hole close to the display area. m is a positive integer greater than or equal to 1 and less than M-1. The distance along the second direction between the side of the first opening of the first through hole near the display area and the side of the first region away from the display area is less than the distance along the second direction between the side of the first opening of the first through hole away from the display area and the side of the first opening of the second through hole near the display area. The distance along the second direction between the side of the first opening of the Mth first through hole away from the display area and the side of the third region near the display area is greater than the distance along the second direction between the side of the first opening of the (M-1)th first through hole away from the display area and the side of the first opening of the Mth first through hole near the display area.

18. The display substrate according to claim 1, characterized in that, The orthographic projection of the organic insulating layer on the substrate does not overlap with the orthographic projection of the first region on the substrate.

19. The display substrate according to claim 1, characterized in that, Also includes: A hole region, the display area is disposed around the hole region, the organic insulating layer is at least partially located in the hole region, and the hole region is provided with a plurality of isolation pillars; The organic insulating layer located in the hole region is provided with at least one second through hole, and the orthographic projection of the at least one second through hole on the substrate is located on the side of the orthographic projection of the plurality of isolation pillars on the substrate away from the display area; The thickness of the organic insulating layer in the display area perpendicular to the substrate is greater than the thickness of the organic insulating layer in the hole area perpendicular to the substrate.

20. The display substrate according to claim 1, characterized in that, The frame area is provided with a gate driving circuit; The organic insulating layer is at least partially located in the frame region, and the organic insulating layer located in the frame region is further provided with a third through hole. The third through hole is at least partially located around the display area, and the orthogonal projection of the third through hole on the substrate is located on the side of the orthogonal projection of the gate driving circuit on the substrate away from the display area.

21. The display substrate according to claim 1, characterized in that, Also includes: A circuit structure layer, a light-emitting structure layer, and a touch structure layer are sequentially stacked on the substrate. The circuit structure layer includes a gate metal layer group and a source / drain metal layer group. The gate metal layer group includes a plurality of gate metal layers sequentially stacked on the substrate. The source / drain metal layer group includes a plurality of source / drain metal layers sequentially stacked on the substrate. The touch structure layer includes a touch buffer layer, a first touch conductive layer, an interlayer insulating layer, and a second touch conductive layer. An inorganic insulating layer is provided between at least two metal layers in the plurality of gate metal layers and between the gate metal layer group and the source / drain metal layer group; a planarization layer is provided between at least two metal layers in the plurality of source / drain metal layers and between the source / drain metal layer group and the light-emitting structure layer. The organic insulating layer includes: a planar layer located between the source / drain metal layer group and the light-emitting structure layer; The thickness of the organic insulating layer located in the display area perpendicular to the substrate is greater than the thickness of the organic insulating layer located in at least one of the second and third areas perpendicular to the substrate.

22. The display substrate according to claim 21, characterized in that, The first region includes: multiple pads; the second region includes: multiple connecting electrodes; the third region includes: multiple contact pads; the pads include: a first conductive structure, a second conductive structure and a third conductive structure; the connecting electrodes include: a fourth conductive structure; the contact pads include: a fifth conductive structure and a sixth conductive structure that are interconnected. The second conductive structure is located on the side of the first conductive structure away from the substrate, the third conductive structure is located on the side of the second conductive structure away from the substrate, the second conductive structure is electrically connected to the first conductive structure and the third conductive structure respectively, at least one film layer of the touch interlayer insulating layer and the touch buffer layer is located between the third conductive structure and the second conductive structure, and the organic insulating layer and at least one film layer of the touch interlayer insulating layer and the touch insulating layer are located between the fifth conductive structure and the sixth conductive structure; The orthographic projection of the first conductive structure on the substrate is within the range of the orthographic projection of the second conductive structure on the substrate, and the orthographic projection of the second conductive structure on the substrate is within the range of the orthographic projection of the second conductive structure on the substrate. The orthographic projection of the fifth conductive structure on the substrate and the orthographic projection of the sixth conductive structure on the substrate at least partially overlap. The first conductive structure is located in one of the plurality of gate metal layers, the second conductive structure is located in at least one of the plurality of source / drain metal layers, the third conductive structure is located in the second touch conductive layer, the fourth conductive structure is located in at least one of the plurality of source / drain metal layers, the fifth conductive structure is located in at least one of the plurality of source / drain metal layers, and the sixth conductive structure is located in the second touch conductive layer.

23. A display device, characterized in that, include: The display substrate as described in any one of claims 1 to 22.

24. The display device according to claim 23, characterized in that, Also includes: The sensor assembly, wherein the display substrate includes a hole region; The orthographic projection of the sensor assembly onto the substrate is at least partially located in the aperture region.

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