Display panel and display device

Abstract

A display panel comprises a substrate (10), a display structure layer, a touch structure layer (50) and a plurality of touch lead-out lines (52). The substrate (10) comprises a display area (AA) and a first frame area (B1) located at one side of the display area (AA), the first frame area (B1) comprising a bending area (B12) and a first sub-area (B11) located between the bending area (B12) and the display area (AA). The plurality of touch lead-out lines (52) are located in the first frame area (B1) and connected with a plurality of touch electrodes of the touch structure layer (50). At least one touch lead-out line (52) comprises a first sub-touch lead-out line (521) located in the first sub-area (B11) and a first touch bending line (522) located in the bending area (B12). The first sub-touch lead-out line (521) and the first touch bending line (522) are in an integrated structure.

Description

Display panel and display device Technical Field

[0001] This article relates to, but is not limited to, the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] Organic light-emitting diodes (OLEDs) and quantum dot light-emitting diodes (QLEDs) are active light-emitting display devices with advantages such as self-illumination, wide viewing angle, high contrast, low power consumption, extremely high response speed, thinness, flexibility, and low cost. Summary of the Invention

[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 panel and a display device.

[0005] On one hand, this embodiment provides a display panel, including: a substrate, a display structure layer, a touch structure layer, and multiple touch leads. The substrate includes a display area and a first border area located on one side of the display area. The first border area includes: a bent area and a first sub-region located between the bent area and the display area. The display structure layer and the touch structure layer are located in the display area, and the touch structure layer is located on the side of the display structure layer away from the substrate. The touch structure layer includes multiple touch electrodes. The multiple touch leads are located in the first border area and are connected to the multiple touch electrodes. At least one of the multiple touch leads includes: a first sub-touch lead located in the first sub-region and a first touch bend line located in the bent area. The first sub-touch lead and the first touch bend line of at least one touch lead are an integral structure.

[0006] In some exemplary embodiments, the touch structure layer includes at least one touch conductive layer, and the plurality of touch leads are in the same layer as the at least one touch conductive layer.

[0007] In some exemplary embodiments, the first border region further includes a second sub-region located on the side of the bent region away from the display area; the at least one touch lead further includes a second sub-touch lead located in the second sub-region. The second sub-touch lead of the at least one touch lead is integrally formed with the first touch bent line; or, the second sub-touch lead of the at least one touch lead is connected to the first touch bent line via a touch connection electrode, the second sub-touch lead being located on the side of the touch connection electrode closer to the substrate, and the first touch bent line being located on the side of the touch connection electrode away from the substrate.

[0008] In some exemplary embodiments, the display structure layer includes a plurality of sub-pixels and a plurality of data lines, wherein the plurality of sub-pixels are connected to the plurality of data lines. The display panel further includes: a plurality of data leads located in the first border region, wherein the plurality of data leads are connected to the plurality of data lines. At least one of the plurality of data leads includes: a first sub-data lead located in the first sub-region, a first data bend line located in the bend region, and a second sub-data lead located in the second sub-region; the first data bend line connects the first sub-data lead and the second sub-data lead; the first data bend line and the first sub-data lead and the second sub-data lead are located in different conductive layers.

[0009] In some exemplary embodiments, the first sub-data lead and the second sub-data lead of the at least one data lead are located on the side of the first data bend line closer to the substrate; one end of the first data bend line is connected to the first sub-data lead via a first data connection electrode, and the other end of the first data bend line is connected to the second sub-data lead via a second data connection electrode. The first data connection electrode and the second data connection electrode are of the same layer structure, and are located on the side of the first sub-data lead and the second sub-data lead away from the substrate, and on the side of the first data bend line closer to the substrate.

[0010] In some exemplary embodiments, the display panel further includes: a first auxiliary organic insulating layer located in the bending region, the first auxiliary organic insulating layer being located on the side of the conductive layer containing the first data bending line away from the substrate, and on the side of the conductive layer containing the first touch bending line close to the substrate.

[0011] In some exemplary embodiments, the orthographic projection of the first auxiliary organic insulating layer on the substrate covers the orthographic projection of the multiple first data bending lines on the substrate, and does not overlap with the orthographic projection of the multiple first touch bending lines on the substrate.

[0012] In some exemplary embodiments, the first auxiliary organic insulating layer includes: a plurality of independently disposed auxiliary insulating strips, each of which, in its orthographic projection onto the substrate, covers at least one orthographic projection of a first data bend line onto the substrate.

[0013] In some exemplary embodiments, the orthographic projection of the first auxiliary organic insulating layer onto the substrate covers the orthographic projections of the plurality of first data bend lines and the plurality of first touch bend lines onto the substrate.

[0014] In some exemplary embodiments, the display panel further includes a second auxiliary organic insulating layer located in the bending region, the second auxiliary organic insulating layer being located on the side of the first touch bending line away from the substrate.

[0015] In some exemplary embodiments, the orthographic projection of the second auxiliary organic insulating layer on the substrate at least partially overlaps with the orthographic projections of the plurality of first touch bend lines on the substrate, but does not overlap with the orthographic projections of the plurality of first data bend lines on the substrate; or, the orthographic projection of the second auxiliary organic insulating layer on the substrate at least partially overlaps with the orthographic projections of the plurality of first touch bend lines and the plurality of first data bend lines on the substrate.

[0016] In some exemplary embodiments, the display panel further includes: a second touch bending line located in the bending region, the second touch bending line being located on the side of the first auxiliary insulating layer near the substrate, and the first touch bending line being connected to the second touch bending line through a plurality of vias formed in the first auxiliary organic insulating layer.

[0017] In some exemplary embodiments, the second touch bend line and the first data bend line are on the same layer.

[0018] In some exemplary embodiments, the display panel further includes: a second data bend line located in the bend region, the second data bend line being located on the side of the first auxiliary organic insulating layer away from the substrate, and the second data bend line being connected to the first data bend line through a plurality of vias formed in the first auxiliary organic insulating layer.

[0019] In some exemplary embodiments, the second data bend line and the first touch bend line are on the same layer.

[0020] In some exemplary embodiments, the display panel further includes a second touch bend line located in the bend region, the second touch bend line being located on the side of the first touch bend line closer to the substrate and in direct contact with the first touch bend line.

[0021] In some exemplary embodiments, the substrate further includes a second border region located on the remaining side of the display area, and the at least one touch lead further includes a third sub-touch lead located in the second border region, wherein the first sub-touch lead and the third sub-touch lead are integrally formed.

[0022] On the other hand, this embodiment provides a display device, including the display panel as described above.

[0023] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood.

[0024] Overview of the attached figures

[0025] The accompanying drawings are provided to further understand the technical solutions of this disclosure and constitute a part of the specification. They are used together with the embodiments of this disclosure to explain the technical solutions of this disclosure and do not constitute a limitation on the technical solutions of this disclosure.

[0026] Figures 1 and 2 are schematic diagrams of a display panel according to at least one embodiment of the present disclosure;

[0027] Figure 3 is a partial cross-sectional schematic diagram of the display area of ​​a display panel according to at least one embodiment of the present disclosure;

[0028] Figure 4A is a partial cross-sectional view along the PP' direction in Figure 2;

[0029] Figure 4B is another partial cross-sectional view along the PP' direction in Figure 2;

[0030] Figure 4C is another partial cross-sectional view along the PP' direction in Figure 2;

[0031] Figure 5 is a partial cross-sectional view along the QQ' direction in Figure 2;

[0032] Figure 6 is a partial cross-sectional view along the UU' direction in Figure 2;

[0033] Figure 7 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0034] Figure 8 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0035] Figure 9 is another partial cross-sectional view along the UU' direction in Figure 2;

[0036] Figure 10 is another partial cross-sectional view along the PP' direction in Figure 2;

[0037] Figure 11 is another partial cross-sectional view along the UU' direction in Figure 2;

[0038] Figure 12 is another partial cross-sectional view along the UU' direction in Figure 2;

[0039] Figure 13 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0040] Figure 14 is another partial cross-sectional view along the UU' direction in Figure 2;

[0041] Figure 15 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0042] Figure 16 is another partial cross-sectional view along the UU' direction in Figure 2;

[0043] Figure 17 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0044] Figure 18 is another partial cross-sectional view along the UU' direction in Figure 2;

[0045] Figure 19 is another partial cross-sectional view along the UU' direction in Figure 2;

[0046] Figure 20 is another partial cross-sectional view along the QQ' direction in Figure 2;

[0047] Figure 21 is another partial cross-sectional view along the UU' direction in Figure 2;

[0048] Figure 22 is another partial cross-sectional view along the PP' direction in Figure 2;

[0049] Figure 23 is another partial cross-sectional view along the UU' direction in Figure 2;

[0050] Figure 24 is another partial cross-sectional view along the UU' direction in Figure 2;

[0051] Figure 25 is a schematic diagram of a display device according to at least one embodiment of the present disclosure.

[0052] Detailed Explanation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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. Those skilled in the art will understand the meaning of these terms in this disclosure as appropriate. "Joining" can include "electrical connection," which can include situations where constituent elements are connected together by a component having some electrical function. There are no particular limitations on "components having some electrical function," as long as they enable the transmission of electrical signals between the connected constituent elements. Examples of "components having some electrical function" include not only electrodes and wiring, but also switching elements such as transistors, resistors, inductors, capacitors, and other multifunctional components.

[0058] 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.

[0059] 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.

[0060] 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°.

[0061] 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.

[0062] In this specification, "approximately" and "about" mean without strictly defined limits, allowing for errors in the process and measurement. In this disclosure, "same" includes values ​​differing by less than 10%, such as values ​​differing by less than 5%.

[0063] 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".

[0064] The phrases "A and B are of the same layer" and "A and B are set in the same layer" in this specification mean that A and B are formed simultaneously through the same patterning 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 range of A, or the orthographic projection of A covers the orthographic projection of B.

[0065] With the development of display technology, narrow-bezel display products are receiving increasing attention. Taking OLED display panels as an example, how to further reduce the bottom bezel of OLED display panels has become a bottleneck.

[0066] This embodiment provides a display panel and display device that facilitates the implementation of a narrow bezel design.

[0067] This embodiment provides a display panel, including: a substrate, a display structure layer, a touch structure layer, and multiple touch leads. The substrate includes a display area and a first border area located on one side of the display area. The first border area includes: a bent area and a first sub-region located between the bent area and the display area. The display structure layer and the touch structure layer are located in the display area, with the touch structure layer located on the side of the display structure layer away from the substrate. The touch structure layer includes multiple touch electrodes. The multiple touch leads are located in the first border area and connected to the multiple touch electrodes. At least one of the multiple touch leads includes: a first sub-touch lead located in the first sub-region and a first touch bend line located in the bent area. The first sub-touch lead and the first touch bend line of the at least one touch lead are an integral structure.

[0068] The display panel provided in this embodiment sets the first sub-touch lead and the first touch bend line in the first bezel area as an integrated structure, which can eliminate the space occupied by the adapter hole that realizes the electrical connection between the first sub-touch lead and the first touch bend line, which is conducive to compressing the first bezel area and thus facilitates the realization of a narrow bezel design.

[0069] In some exemplary embodiments, the touch structure layer may include at least one touch conductive layer, and multiple touch leads are co-layered with the at least one touch conductive layer. For example, the touch structure layer may include a first touch conductive layer and a second touch conductive layer sequentially disposed along a direction away from the substrate, with the multiple touch leads located in the first touch conductive layer; or the multiple touch leads may be located in the second touch conductive layer; or, a portion of the multiple touch leads may be located in the first touch conductive layer, and another portion may be located in the second touch conductive layer. This example arrangement eliminates the space occupied by the transition holes required for the touch leads to other film layers, which is beneficial for achieving a narrow bezel design.

[0070] In some exemplary embodiments, the first border region may further include a second sub-region located on the side of the bent region away from the display area. At least one touch lead may further include a second sub-touch lead located in the second sub-region. The second sub-touch lead of the at least one touch lead and the first touch bent line may be an integral structure; alternatively, the second sub-touch lead of the at least one touch lead may be connected to the first touch bent line via a touch connection electrode, with the second sub-touch lead located on the side of the touch connection electrode closer to the substrate, and the first touch bent line located on the side of the touch connection electrode away from the substrate. This example configuration optimizes the space occupied by the touch leads.

[0071] In some exemplary embodiments, the display structure layer may include multiple sub-pixels and multiple data lines, with the multiple sub-pixels connected to the multiple data lines. The display panel may also include multiple data leads located in a first border region, with the multiple data leads connected to the multiple data lines. At least one data lead includes: a first sub-data lead located in a first sub-region, a first data bend line located in a bend region, and a second sub-data lead located in a second sub-region, with the first data bend line connected to the first and second sub-data leads. The first data bend line and the first and second sub-data leads are located in different conductive layers.

[0072] The following examples illustrate the solution of this embodiment.

[0073] Figures 1 and 2 are schematic diagrams of a display panel according to at least one embodiment of the present disclosure. Figures 1 and 2 show planar schematic diagrams of the display panel before the bending process. Figure 1 illustrates the display structure layer of the display area, and Figure 2 illustrates the touch structure layer of the display area.

[0074] In some examples, as shown in Figures 1 and 2, the display panel may include a display area AA and a peripheral area BB surrounding the display area AA. For example, the peripheral area BB may include a first border area B1 located on one side of the display area AA and a second border area B2 located on the other sides of the display area AA. The first border area B1 may be the bottom border area of ​​the display panel, and the second border area B2 may include the top border area, left border area, and right border area of ​​the display panel.

[0075] In some examples, as shown in Figures 1 and 2, the display area AA can be a flat area comprising multiple sub-pixels PX that make up a pixel array. These sub-pixels PX can be configured to display moving or still images. In some examples, the display area AA can be rectangular. However, this embodiment is not limited to this. For example, the display area AA can be other shapes such as circular or elliptical. In some examples, the display panel can be a flexible panel, and therefore the display panel can be deformable, such as rolled, bent, folded, or rolled up.

[0076] In some examples, as shown in Figure 1, the display structure layer of the display area AA 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 X and be arranged along a second direction Y; the multiple data lines DL may extend along the second direction Y and be arranged along the first direction X. The orthogonal projections of the multiple gate lines GL and the multiple data lines DL on the substrate may intersect to form multiple sub-pixel regions, and each sub-pixel region may contain one sub-pixel PX. 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 gate control signals to the multiple sub-pixels PX. In some examples, the gate control signals may include scan signals and light emission control signals, or may include scan signals, or may include scan signals, reset control signals, and light emission control signals.

[0077] In some examples, as shown in Figure 1, the first direction X can be the extension direction of the grid line GL in the display area AA (e.g., the row direction), and the second direction Y can be the extension direction of the data line DL in the display area AA (e.g., the column direction). The first direction X and the second direction Y can intersect each other, for example, they can be perpendicular to each other.

[0078] In some examples, a pixel unit of the display area AA may include three sub-pixels, namely a red sub-pixel, a green sub-pixel, and a blue sub-pixel. However, this embodiment is not limited to this. In some examples, a pixel unit may include four sub-pixels, namely a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel.

[0079] In some examples, a sub-pixel may include a pixel circuit and a light-emitting element electrically connected to the pixel circuit. The pixel circuit may include multiple transistors and at least one capacitor. For example, the pixel circuit may be a 3T1C, 4T1C, 5T1C, 5T2C, 6T1C, 7T1C, or 8T1C structure. In these 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 some examples, the multiple transistors in the pixel circuit may be P-type transistors or N-type transistors. Using the same type of transistors in the pixel circuit can simplify the manufacturing process, reduce the manufacturing difficulty of the display panel, and improve product yield. In other examples, the multiple transistors in the pixel circuit may include both P-type and N-type transistors.

[0080] In some examples, the multiple transistors in the pixel circuit can be low-temperature polysilicon (LTPS) thin-film transistors (TFTs), oxide thin-film transistors (OPTs), or a combination of both. The active layer of the LTPS TFT is made of low-temperature polysilicon (LTPS), while the active layer of the OPT TFT is made of oxide. LTPS TFTs offer advantages such as high mobility and fast charging, while OPTs offer advantages such as low leakage current. Integrating LTPS and OPTs onto a single display panel—an LTPS+Oxide (LTPO) display panel—leverages the advantages of both, enabling low-frequency driving, reducing power consumption, and improving display quality.

[0081] In some examples, 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 circuit. The color of the light emitted by the light-emitting element can be determined as needed. In some examples, the light-emitting element may include an anode, a cathode, and an organic light-emitting layer located between the anode and cathode. The anode of the light-emitting element can be electrically connected to the corresponding pixel circuit. However, this embodiment is not limited in this respect.

[0082] In some examples, the orthographic projection of the light-emitting element of a subpixel onto the substrate can be rectangular, rhomboid, pentagonal, or hexagonal. When a pixel unit includes three subpixels, the light-emitting elements of the three subpixels can be arranged horizontally side-by-side, vertically side-by-side, or in a triangular arrangement; when a pixel unit includes four subpixels, the light-emitting elements of the four subpixels 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.

[0083] In some examples, as shown in Figure 2, the touch structure layer of the display area AA can be located on the side of the display structure layer away from the substrate. The touch structure layer may include: multiple touch electrodes (e.g., multiple first touch electrodes 531 and multiple second touch electrodes 541). The multiple first touch electrodes 531 arranged sequentially along the first direction X can be referred to as first touch units, and two adjacent first touch electrodes 531 within a first touch unit can be connected by a first connecting portion 532; the multiple first touch units can be arranged sequentially along the second direction Y. The multiple second touch electrodes 541 arranged sequentially along the second direction Y can be referred to as second touch units, and two adjacent second touch electrodes 541 within a second touch unit can be connected by a second connecting portion 542; the multiple second touch units can be arranged sequentially along the first direction X.

[0084] In some examples, the first touch electrode 531 may be a driving (Tx) electrode, and the second touch electrode 541 may be a sensing (Rx) electrode. Alternatively, the first touch electrode 531 may be a sensing (Rx) electrode, and the second touch electrode 541 may be a driving (Tx) electrode. This embodiment is not limited in this respect.

[0085] In some examples, as shown in Figures 1 and 2, the surrounding area BB can be equipped with a first isolation dam DAM1 and a second isolation dam DMA2. The first isolation dam DAM1 and the second isolation dam DAM2 can surround the display area AA, and the second isolation dam DAM2 can be located on the side of the first isolation dam DAM1 away from the display area AA.

[0086] In some examples, as shown in Figures 1 and 2, the peripheral area BB can be provided with multiple touch leads 52 and multiple data leads 25. The multiple data leads 25 can be located in the first border area B1 and connected to multiple data lines DL in the display area AA. The multiple touch leads 52 can be connected to multiple first touch units and multiple second touch units. For example, the multiple touch leads 52 connected to multiple first touch units can extend from the left or right border area of ​​the second border area B2 to the first border area B1, and the multiple touch leads 52 connected to multiple second touch units can be located in the first border area B1. In other examples, the multiple touch leads connected to multiple second touch units can extend from the upper border area of ​​the second border area to the first border area.

[0087] In some examples, as shown in Figures 1 and 2, the first bezel area B1 of the display panel may include: a first sub-area B11, a bent area B12, and a second sub-area B13 sequentially arranged along a direction away from the display area AA. The first sub-area B11 may be connected to the display area AA and connected to the second bezel area B2. The first sub-area B11 may also be referred to as a first fan-out area. The bent area B12 may be connected between the first sub-area B11 and the second sub-area B13, and may be configured such that the second sub-area B13 bends to the back of the display area AA. The second sub-area B13 may include: at least one first signal access area B131 and at least one second signal access area B132. This example illustrates one first signal access area B131 and one second signal access area B132. In other examples, the display panel can be a large-size panel, which may include multiple first signal access areas B131 and multiple second signal access areas B132. The multiple first signal access areas B131 may be arranged sequentially along a first direction X, and the multiple second signal access areas B132 may be arranged sequentially along the first direction X. The first signal access area B131 may be located on the side of the second signal access area B132 away from the display area AA. In other words, the second signal access area B132 may be located on the side of the first signal access area B131 closer to the bending area B12 in the second direction Y.

[0088] In some examples, the second sub-region B13 may include: a second fan-out region B133, a first circuit setting region B135, a second circuit setting region B136, a third fan-out region B134, a second signal access region B132, and a first signal access region B131, sequentially arranged in the second direction Y away from the bending region B12. The first circuit setting region B135 may have multiple test circuits configured to provide test data signals to multiple data lines DL of the display area AA. In other examples, the first circuit setting region may also have multiple electrostatic discharge circuits configured to prevent electrostatic damage to the display panel by eliminating static electricity. The second circuit setting region B136 may have multiple multiplexing circuits (MUX) configured to provide data signals to the multiple data lines DL of the display area AA. However, this embodiment is not limited to these aspects.

[0089] In some examples, the first signal access area B131 may be provided with a plurality of first contact pads, which may be configured to bond to an external flexible printed circuit board (FPC). The second signal access area B132 may connect to an integrated circuit (IC). The second signal access area B132 may be provided with a plurality of second contact pads, portions of which may be connected to a plurality of data leads 25, configured to transmit data signals. At least one second contact pad in the second signal access area B132 and at least one first contact pad in the first signal access area B131 may be connected via wiring.

[0090] In some examples, as shown in FIG1, the data lead 25 located in the first border region B1 may include: a first sub-data lead 251 located in the first sub-region B11, a first data bend 252 located in the bend region B12, and a second sub-data lead 253 located in the second sub-region B13. One end of the first data bend 252 may be connected to the first sub-data lead 251, and the other end may be connected to the second sub-data lead 253. The first data bend 252, the first sub-data lead 251, and the second sub-data lead 253 may be located in different conductive layers. For example, the first sub-data lead 251 and the second sub-data lead 253 may be located in the same conductive layer, and the first data bend 252 may be located on the side of the first sub-data lead 251 away from the substrate. In some examples, the second sub-data lead 253 may extend to be electrically connected to a second contact pad within the second signal access region B132.

[0091] In some examples, as shown in Figure 2, at least one touch lead 52 located in the peripheral area BB may include: a first sub-touch lead 521 located in the first sub-region B11, a first touch bend line 522 located in the bend area B12, and a second sub-touch lead 523 located in the second sub-region B13. For example, at least one touch lead 52 may also include: a third sub-touch lead 524 located in the second border area B2. The third sub-touch lead 524 may be connected to the first sub-touch lead 521, and the first touch bend line 522 may be connected between the first sub-touch lead 521 and the second sub-touch lead 523. The first sub-touch lead 521 and the first touch bend line 522 may be an integral structure, which helps to reduce the size of the first border area along the second direction Y. In other examples, the first sub-touch lead 521, the first touch bend 522, and the third sub-touch lead 524 can be a single integrated structure, which facilitates a narrow bezel design. In some examples, the second sub-touch lead 253 can extend to electrically connect with the first contact pad within the first signal access area B131.

[0092] In some examples, the first sub-region B11 may also be provided with a first frame power line, a second frame power line, and multiple drive leads. The first frame power line may be configured to connect to a high-potential power line in the display area AA; the second frame power line may be configured to extend to the second frame region B2 and be electrically connected to the cathode of the light-emitting element in the display area AA. The multiple drive leads may extend to the second frame region B2 and be connected to a gate drive circuit disposed within the second frame region B2 (e.g., including the left frame region and the right frame region), configured to provide control signals to the gate drive circuit, such as start signals, clock signals, etc.

[0093] In some examples, within the second border region B2, the orthographic projection of the second border power line onto the substrate may at least partially overlap with the orthographic projection of the third sub-touch lead 524 of the plurality of touch leads 52 onto the substrate. The plurality of touch leads 52 may be located on the side of the first isolation dam DAM1 closer to the display region AA.

[0094] In some examples, within the first sub-region B11 of the first border region B1, the first sub-touch leads 521 of the multiple touch leads 52 can be located on the side away from the substrate from the first sub-data leads 251 of the multiple data leads 25, and the orthographic projections of the multiple first sub-touch leads 521 on the substrate and the orthographic projections of the multiple first sub-data leads 251 on the substrate can partially overlap.

[0095] In some examples, within the bending region B12 of the first border region B1, the first data bending lines 252 of the multiple data leads 25 can be located in the middle region of the first touch bending lines 522 of the multiple touch leads 52 along the first direction X. In other words, the multiple first touch bending lines 522 can be divided into two groups, and the two groups of first touch bending lines 522 can be located on both sides of the multiple first data bending lines 252 along the first direction X. For example, the orthographic projections of the multiple first data bending lines 252 and the multiple first touch bending lines 522 onto the substrate may not overlap, or may partially overlap.

[0096] Figure 3 is a partial cross-sectional schematic diagram of the display area of ​​a display panel according to at least one embodiment of the present disclosure. Figure 3 illustrates the structure of a sub-pixel of the display area as an example. In this example, it is described that the multiple transistors in the pixel circuit are of the same type; for example, the multiple transistors in the pixel circuit can all be low-temperature polysilicon thin-film transistors (LTPS) or all be oxide thin-film transistors (OPTs). In other examples, the multiple transistors in the pixel circuit can be both LPS and OPTs. Furthermore, this example illustrates a display panel integrating a mutual capacitance touch structure to form an FMLOC structure.

[0097] In some examples, as shown in Figure 3, the display area of ​​the display panel may include a substrate 10, and a circuit structure layer 20, a light-emitting structure layer 30, an encapsulation structure layer 40, and a touch structure layer 50 sequentially disposed on the substrate 10. The display structure layer may include at least the circuit structure layer 20 and the light-emitting structure layer 30. The circuit structure layer 20 may include at least pixel circuits for multiple sub-pixels, each sub-pixel's pixel circuit including multiple transistors and at least one capacitor. The light-emitting structure layer 30 may include at least light-emitting elements for multiple sub-pixels. The touch structure layer 50 uses the encapsulation structure layer 40 as a substrate. In some possible implementations, other film layers (e.g., color filter layers) may be disposed between the touch structure layer 50 and the encapsulation structure layer 40; this disclosure does not limit this.

[0098] In some examples, the substrate 10 may include a first flexible material layer, a first inorganic material layer, a substrate semiconductor layer, a second flexible material layer, and a second inorganic material layer stacked together. The materials of the first and second flexible material layers may be polyimide (PI), polyethylene terephthalate (PET), or a surface-treated polymer film, etc. The materials of the first and second inorganic material layers may be silicon nitride (SiNx) or silicon oxide (SiOx), etc., to improve the water and oxygen resistance of the substrate 10. The material of the substrate semiconductor layer may be amorphous silicon (a-Si). However, this embodiment is not limited in this respect.

[0099] In some examples, Figure 3 illustrates a sub-pixel comprising a thin-film transistor 21 and a capacitor 22. In some examples, the circuit structure layer 20 of the display area 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 gate insulating layer 101 may be disposed between the semiconductor layer and the first gate metal layer; a second gate insulating layer 102 may be disposed between the first and second gate metal layers; an interlayer insulating layer 103 may be disposed between the second gate metal layer and the first source / drain metal layer; a passivation layer 104 and a first planarization layer 105 may be disposed between the first and second source / drain metal layers; and a second planarization layer 106 may be disposed on the side of the second source / drain metal layer away from the substrate 10. The first gate insulating layer 101, the second insulating layer 102, the interlayer insulating layer 103, and the passivation layer 104 may be inorganic insulating layers, while the first planarization layer 105 and the second planarization layer 106 may be organic insulating layers. However, this embodiment is not limited to these limitations. In other examples, a buffer layer may be disposed on the side of the semiconductor layer near the substrate. This buffer layer prevents harmful substances from the substrate from penetrating the interior of the display panel and increases the adhesion of the film layers in the display panel to the substrate. In still other examples, a bottom shielding metal layer (BSM) may be disposed on the side of the buffer layer near the substrate. This bottom shielding metal layer may be configured to at least partially cover the active layer of the thin-film transistors of the pixel circuitry to prevent external light from affecting the performance of the thin-film transistors. In still other examples, a passivation layer may be omitted between the first and second source / drain metal layers, and only a first planarization layer may be disposed between the first and second source / drain metal layers.

[0100] In some examples, the first gate metal layer, the second gate metal layer, the first source / drain metal layer, and the second source / drain metal layer can be made of metallic materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or alloys of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). These can be single-layer structures or multi-layer composite structures, such as Ti / Al / Ti. The semiconductor layer can be made of amorphous indium gallium zinc oxide (a-IGZO), zinc oxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), hexathiophene, or polythiophene, etc. That is, this disclosure applies to transistors manufactured based on oxide technology, silicon technology, or organic technology.

[0101] In some examples, as shown in FIG3, the semiconductor layer of the display area may include at least the active layer 210 of the thin-film transistor 21. The active layer 210 of the thin-film 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 the gate 213 of the thin-film transistor 21 and the first electrode 221 of the capacitor 22. The orthographic projection of the gate 213 of the thin-film transistor 21 onto the substrate 10 may cover the orthographic projection of the channel region 2100 of the active layer 210 onto the substrate 10. The second gate metal layer may include at least the second electrode 222 of the capacitor 22. The orthographic projections of the second electrode 222 and the first electrode 221 of the capacitor 22 onto the substrate 10 may at least partially overlap, for example, they may coincide. The first source-drain metal layer may include at least the source 211 and the drain 212 of the thin-film transistor 21. The interlayer insulating layer 103 may have multiple vias (e.g., including a first pixel via and a second pixel via) in the display area. The interlayer insulating layer 103, the second gate insulating layer 102, and the first gate 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 active layer 210. The interlayer insulating layer 103, the second gate insulating layer 102, and the first gate 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 active layer 210. The source 211 of the thin-film transistor 21 can be electrically connected to the first region 2101 of the active layer 210 through the first pixel via, and the drain 212 can be electrically connected to the second region 2102 of the active layer 210 through the second pixel via. The second source-drain metal layer may include at least a first transition electrode 231. The first transition electrode 231 can be electrically connected to the drain 212 of the thin-film transistor 21 of the pixel circuit through a third pixel via formed by the passivation layer 104 and the first planarization layer 105. In this example, the first transition electrode 231 can be used to achieve the electrical connection between the pixel circuit and the light-emitting element.

[0102] In some examples, the gate lines of the display area may be located in the first gate metal layer, the data lines of the display area may be located in the second source-drain metal layer, and the high-potential power lines of the display area may be located in the second source-drain metal layer. This embodiment is not limited in this respect. In other examples, the circuit structure layer may include three source-drain metal layers, which can avoid arranging too many traces in a single source-drain metal layer, thereby facilitating the realization of a narrow bezel structure.

[0103] In some examples, as shown in Figure 3, the light-emitting structure layer 30 may include a pixel definition layer 304 and multiple light-emitting elements. For example, each light-emitting element may include a stacked first electrode 301, an organic light-emitting layer 302, and a second electrode 303. The first electrode 301 of the light-emitting element can be an anode, and the first electrode 301 can be disposed on the second planarization layer 106 and electrically connected to the first transition electrode 231 through a third pixel via formed in the second planarization layer 106. The pixel definition layer 304 is disposed on the first electrode 301 and the second planarization layer 106, and the pixel definition layer 304 may have multiple pixel openings, one pixel opening exposing at least a portion of the surface of a corresponding first electrode 301. At least a portion of the organic light-emitting layer 302 can be disposed within a pixel opening and connected to the corresponding first electrode 301. The second electrode 303 can be a cathode, and can be disposed on and connected to the organic light-emitting layer 302. The organic light-emitting layer 302 can emit light of a corresponding color under the drive of the first electrode 301 and the second electrode 303. An isolation pillar layer may also be provided on the side of the pixel definition layer 304 away from the substrate 10, and the isolation pillar layer may include multiple isolation pillars (PS).

[0104] In some examples, the organic light-emitting layer 302 of the light-emitting element may include an emitting layer (EML) and one or more films selected from the following: 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 301 and the second electrode 303, the light-emitting properties of the organic material can be utilized to emit light at the required grayscale.

[0105] In some examples, the light-emitting layers of different colored light-emitting elements 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, as can the electron injection layer and electron transport layer on the other side. In some examples, 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 some examples, 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.

[0106] In some examples, as shown in Figure 3, the encapsulation structure layer 40 may include a first encapsulation layer 401, a second encapsulation layer 402, and a third encapsulation layer 403 stacked together. The first encapsulation layer 401 and the third encapsulation layer 403 may be made of inorganic materials, while the second encapsulation layer 402 may be made of organic materials. The second encapsulation layer 402 may be disposed between the first encapsulation layer 401 and the third encapsulation layer 403 to prevent external moisture from entering the light-emitting element. However, this embodiment is not limited to this. For example, the encapsulation structure layer may employ a five-layer stacked structure of inorganic / organic / inorganic / organic / inorganic.

[0107] In some examples, as shown in Figure 3, the touch structure layer 50 of the display area may include, in the direction perpendicular to the display panel, a touch buffer layer (TBL) 501, a first touch conductive layer (TMA, Touch Metal A) 511, a touch interlayer insulating layer (TLD) 502, a second touch conductive layer (TMB, Touch Metal B) 512, and a protective layer (OC, Optical Cover) 503, arranged sequentially. For example, the touch buffer layer 501 and the touch interlayer insulating layer 502 may be inorganic insulating layers, and the protective layer 503 may be an organic insulating layer. The touch barrier layer 501 and the touch interlayer insulating layer 502 may be made of any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON), and may be a single layer, multiple layers, or composite layers. The touch protective layer 503 may be made of polyimide (PI), etc. In other examples, the touch barrier layer 501 can be an inorganic insulating layer, while the touch interlayer insulating layer 502 and the touch protective layer 503 can be organic insulating layers. By setting the touch interlayer insulating layer 502 to an organic insulating layer, the cracking problem that occurs in the reliability test of the display panel (such as the cracking problem that occurs in the anti-camber test of the foldable display panel) can be improved, thereby enhancing the bending resistance of the display panel and helping to improve the product yield and competitiveness of the display panel.

[0108] In some examples, the first touch conductive layer 511 may include a plurality of first touch electrodes 531, a plurality of second touch electrodes, and a plurality of first connecting portions; the plurality of first touch electrodes, the plurality of second touch electrodes, and the plurality of first connecting portions may be formed in the same patterning process, and the first touch electrodes 531 and the first connecting portions may be an integral structure. The second touch conductive layer 512 may include a plurality of second connecting portions 542; the second connecting portions 542 may be interconnected with adjacent second touch electrodes through vias formed in the interlayer insulating layer 502. In other examples, the first touch conductive layer may include the aforementioned first touch electrodes, second touch electrodes, and second connecting portions, and the second touch conductive layer may include the aforementioned first connecting portions.

[0109] In some examples, the first touch conductive layer 511 and the second touch conductive layer 512 can be made of metal materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or alloy materials of the above metals, such as aluminum-neodymium alloy (AlNd) or molybdenum-niobium alloy (MoNb). They can be single-layer structures or multi-layer composite structures, such as Ti / Al / Ti, ITO / Ag / ITO, etc.

[0110] Figure 4A is a partial cross-sectional view along the PP' direction in Figure 2. Figure 4B is another partial cross-sectional view along the PP' direction in Figure 2. Figure 4C is another partial cross-sectional view along the PP' direction in Figure 2. Figure 5 is a partial cross-sectional view along the QQ' direction in Figure 2. Figure 6 is a partial cross-sectional view along the UU' direction in Figure 2.

[0111] In some examples, as shown in Figures 4A, 5, and 6, a first peripheral insulating layer 271, a second peripheral insulating layer 272, and a third peripheral insulating layer 273 may be disposed on the substrate 10 within the first sub-region B11 and the second sub-region B13 of the first border region. The second peripheral insulating layer 272 may be located on the side of the first peripheral insulating layer 271 away from the substrate 10, and the third peripheral insulating layer 273 may be located on the side of the second peripheral insulating layer 272 away from the substrate 10. Taking the film layer structure of the display panel shown in Figure 3 as an example, the first peripheral insulating layer 271 may be formed by stacking a second gate insulating layer and an interlayer insulating layer extending to the first border region; the second peripheral insulating layer 272 may be formed by stacking a passivation layer and a first planarization layer extending to the first border region; and the third peripheral insulating layer 273 may be formed by stacking a second planarization layer, a pixel definition layer, a first inorganic encapsulation layer, and a second inorganic encapsulation layer extending to the first border region. However, this embodiment is not limited in this respect. In other examples, the third peripheral insulating layer 273 may be formed by stacking a second planar layer, a first inorganic encapsulation layer, and a second inorganic encapsulation layer extending to the first border region.

[0112] In some examples, as shown in FIG4B, a first gate insulating layer 101, a first peripheral insulating layer 271, and a second peripheral insulating layer 272 may be disposed on the substrate 10 within the first sub-region B11 and the second sub-region B13 of the first border region. The first gate insulating layer 101 in the bending region B12 can be removed. As shown in FIG4C, the first gate insulating layer 101 may be disposed on the substrate 10 of the first border region. The first gate insulating layer 101 in the bending region B12 may be retained. The peripheral film layer shown in FIG4A will be used as an example for the following explanation.

[0113] In some examples, as shown in Figures 4A, 5 and 6, the first gate insulating layer 101, the first peripheral insulating layer 271, the second peripheral insulating layer 272 and the third peripheral insulating layer 273 of the bent region B12 can be removed, and the first touch bend line 522 and the first data bend line 252 can contact the surface of the substrate 10.

[0114] In some examples, as shown in Figure 4A, one end of the first data bend line 252 can extend to the first sub-region B11 and be connected to the first sub-data lead 251 via the first data connection electrode 261. The other end of the first data bend line 252 can extend to the second sub-region B13 and be connected to the second sub-data lead 253 via the second data connection electrode 262. The conductive layer containing the first data bend line 252 is located on the side of the conductive layers containing the first data connection electrode 261 and the second data connection electrode 262 away from the substrate, while the conductive layers containing the first sub-data lead 251 and the second sub-data lead 253 are located on the side of the conductive layers containing the first data connection electrode 261 and the second data connection electrode 262 closer to the substrate. For example, the first sub-data lead 251 and the second sub-data lead 253 can be in the same layer and in the same layer as the first gate metal layer of the display area; the first data connection electrode 261 and the second data connection electrode 262 can be in the same layer and in the same layer as the first source drain metal layer of the display area; the first data bend line 252 can be in the same layer as the second source drain metal layer of the display area.

[0115] In some examples, as shown in Figure 5, the first touch bend line 522 and the first sub-touch lead line 521 located in the first sub-region B11 can be an integral structure. The first touch bend line 522 can extend to the second sub-region B13 and be connected to the second sub-touch lead line 523 via the touch connection electrode 263. The first touch bend line 522 can be located on the side of the touch connection electrode 263 away from the substrate 10, and the touch connection electrode 263 can be located on the side of the second sub-touch lead line 523 away from the substrate 10. For example, the second sub-touch lead line 523 can be in the same layer as the first gate metal layer or the second gate metal layer of the display area, the touch connection electrode 263 can be in the same layer as the first source / drain metal layer of the display area, and the first touch bend line 522 can be in the same layer as the first touch conductive layer or the second touch conductive layer of the display area. In this example, the touch lead-out line can be a single structure in the first sub-region B11 and the bending region B12, and then a jumper wire is used to connect to the second sub-touch lead-out line in the second sub-region B13. This can help reduce the length of the first sub-region B11 along the second direction, which is beneficial for narrow bezel design.

[0116] In some examples, as shown in Figure 6, within the bending region B12, the orthographic projections of multiple first touch bending lines 522 and multiple first data bending lines 252 onto the substrate 10 may not overlap. The insulating layers of both the first touch bending lines 522 and the first data bending lines 252 near the substrate 10 are removed. The linewidth L1 of the first touch bending line 522 and the linewidth L2 of the first data bending line 252 may be approximately the same. In other examples, the insulating layer of the first touch bending line 522 near the substrate may be removed, while the organic insulating layer of the first data bending line 252 near the substrate (e.g., an insulating layer with the same structure as the first and second planarization layers of the display area) may be retained.

[0117] Figure 7 is another partial cross-sectional view along the QQ' direction in Figure 2. In some examples, as shown in Figure 7, the first touch bend line 522, the first sub-touch lead-out line 521 located in the first sub-region B11, and the second sub-touch lead-out line 523 located in the second sub-region B13 can be an integral structure. For example, the integral structure of the first touch bend line 522, the first sub-touch lead-out line 521, and the second sub-touch lead-out line 523 can be in the same layer as the first touch conductive layer or the second touch conductive layer of the display area. In this example, the touch lead-out lines do not require jumper holes in the first sub-region B11 and the second sub-region B13, which reduces the space required for the holes and is beneficial for narrow bezel design. Further descriptions of this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0118] Figure 8 is another partial cross-sectional view along the QQ' direction in Figure 2. Figure 9 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 8 and 9, the display panel may further include a second touch bend line 524 located in the bend region B12. The second touch bend line 524 may extend to the second sub-region B13 and be connected to the second sub-touch lead-out line 523 in the second sub-region B13 via the touch connection electrode 263. Within the bend region B12, the first touch bend line 522 and the second touch bend line 524 may be in direct contact. The second touch bend line 524 may be located on the side of the first touch bend line 522 closer to the substrate 10. The second touch bend line 524 may be located on the side of the touch connection electrode 263 away from the substrate 10.

[0119] In some examples, the first touch bend line 522 can be co-layered with the first or second touch conductive layer of the display area; the second touch bend line 524 can be co-layered with the second source / drain metal layer of the display area; the touch connection electrode 263 can be co-layered with the first source / drain metal layer of the display area; and the second sub-touch lead-out line 523 can be co-layered with the first or second gate metal layer of the display area. The first data bend line 252 can be co-layered with the second touch bend line 524. In other examples, the second touch bend line 524 and the touch connection electrode 263 can be an integral structure.

[0120] In some examples, the orthographic projection of the first touch bend 522 onto the substrate 10 and the orthographic projection of the second touch bend 524 onto the substrate 10 may at least partially overlap. For example, the orthographic projection of the first touch bend 522 onto the substrate 10 may cover the orthographic projection of the second touch bend 524 onto the substrate 10.

[0121] In this example, by providing a first touch bend line 522 and a second touch bend line 524 in direct contact within the bending area, the resistance of the touch lead wires and the risk of breakage during bending can be reduced. Further descriptions of the display panel in this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0122] Figure 10 is another partial cross-sectional view along the PP' direction in Figure 2. Figure 11 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 10 and 11, the display panel may further include a first auxiliary organic insulating layer 281 located in the bending region B12. The first auxiliary organic insulating layer 281 may be located on the side of the first data bending line 252 away from the substrate 10. The orthographic projection of the first auxiliary organic insulating layer 281 onto the substrate 10 may cover the orthographic projections of multiple first data bending lines 252 onto the substrate 10, and may not overlap with the orthographic projections of multiple first touch bending lines 522 onto the substrate 10. The first touch bending lines 522 may be in the same layer as the first touch conductive layer or the second touch conductive layer of the display area.

[0123] In some examples, the first auxiliary organic insulating layer 281 may be co-layered with the second planarization layer or pixel definition layer of the display area. In other examples, the first auxiliary organic insulating layer 281 may include a first sub-layer co-layered with the second planarization layer and a second sub-layer co-layered with the pixel definition layer.

[0124] This example, by providing a first auxiliary organic insulating layer 281 in the bending region, can prevent over-etching of the conductive layer where the first data bending line 252 is located during the etching process of the first and second touch conductive layers. Further descriptions of the display panel in this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0125] Figure 12 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figure 12, the first auxiliary organic insulating layer 281 may include: a plurality of independently disposed auxiliary insulating strips 2811, the orthographic projection of each auxiliary insulating strip 2811 onto the substrate 10 may cover at least one orthographic projection of the first data bending line 252 onto the substrate 10. For example, the orthographic projection of one auxiliary insulating strip 2811 onto the substrate 10 may cover the orthographic projection of one first data bending line 252 onto the substrate 10. In this example, the first auxiliary organic insulating layer 281 in the bending region is configured as a plurality of independent auxiliary insulating strips, which can adjust the bending stress in the bending region. Further descriptions of the display panel in this example can be found in the description of the foregoing embodiments, and will not be repeated here.

[0126] Figure 13 is another partial cross-sectional view along the QQ' direction in Figure 2. Figure 14 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 13 and 14, the display panel may further include: a first auxiliary organic insulating layer 281 located in the bending region B12. The first auxiliary organic insulating layer 281 may be located on the side of the first data bending line 252 away from the substrate 10 and on the side of the first touch bending line 522 close to the substrate 10. The orthographic projection of the first auxiliary organic insulating layer 281 onto the substrate 10 may cover the orthographic projections of multiple first data bending lines 252 and multiple first touch bending lines 522 onto the substrate 10. For example, the first touch bending line 522 may be in the same layer as the first touch conductive layer or the second touch conductive layer of the display area; the first data bending line 252 may be in the same layer as the second source / drain metal layer of the display area; the first auxiliary organic insulating layer 281 may be in the same layer as the second planarization layer or pixel definition layer of the display area. This embodiment is not limited in this respect.

[0127] This example, by providing a first auxiliary organic insulating layer 281 in the bending region, can prevent over-etching of the conductive layer where the first data bending line is located during the etching process of the first and second touch conductive layers, and can also adjust the bending stress in the bending region. Further descriptions of the display panel in this example can be found in the descriptions of the foregoing embodiments, and will not be repeated here.

[0128] Figure 15 is another partial cross-sectional view along the QQ' direction in Figure 2. Figure 16 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 15 and 16, the display panel may further include a second auxiliary organic insulating layer 282 located in the bending region B12. The second auxiliary organic insulating layer 282 may be located on the side of the first touch bending line 522 away from the substrate 10. The orthographic projection of the second auxiliary organic insulating layer 282 onto the substrate 10 may cover the orthographic projections of multiple first touch bending lines 522 onto the substrate 10 in the bending region B12, and may not overlap with the orthographic projections of multiple first data bending lines 252 onto the substrate 10. The first touch bending lines 522 may be co-layered with the first touch conductive layer or the second touch conductive layer of the display area; the first data bending lines 252 may be co-layered with the second source / drain metal layer of the display area.

[0129] In some examples, the second auxiliary organic insulating layer 282 may be of the same structure as the protective layer of the display area.

[0130] This example demonstrates how the bending stress of the touch lead wire can be adjusted by providing a second auxiliary organic insulating layer in the bending area. Further details regarding the display panel of this example can be found in the description of the foregoing embodiments and will not be repeated here.

[0131] Figure 17 is another partial cross-sectional view along the QQ' direction in Figure 2. Figure 18 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 17 and 18, the display panel may further include: a first auxiliary organic insulating layer 281 and a second auxiliary organic insulating layer 282 located in the bending region B12. The first auxiliary organic insulating layer 281 may be located on the side of the first data bending line 252 away from the substrate 10 and on the side of the first touch bending line 522 close to the substrate 10, and the second auxiliary organic insulating layer 282 may be located on the side of the first touch bending line 522 away from the substrate 10. The orthographic projection of the second auxiliary organic insulating layer 282 onto the substrate 10 can cover the orthographic projections of multiple first touch bending lines 522 onto the substrate 10 in the bending region B12, and can not overlap with the orthographic projections of multiple first data bending lines 252 onto the substrate 10; the orthographic projection of the first auxiliary organic insulating layer 281 onto the substrate 10 can cover the orthographic projections of multiple first touch bending lines 522 and multiple first data bending lines 252 onto the substrate 10.

[0132] In some examples, the first touch bend line 522 may be co-layered with the first or second touch conductive layer of the display area; the first data bend line 252 may be co-layered with the second source / drain metal layer of the display area; the first auxiliary organic insulating layer 281 may be co-layered with the second planarization layer or pixel definition layer of the display area; and the second auxiliary organic insulating layer 282 may be co-layered with the protective layer of the display area. This embodiment is not limited in this respect.

[0133] This example demonstrates how the bending stress in the bending region can be adjusted by providing a first auxiliary organic insulating layer and a second auxiliary organic insulating layer in the bending region. Further details regarding the display panel of this example can be found in the description of the foregoing embodiments and will not be repeated here.

[0134] Figure 19 is another partial cross-sectional view of Figure 2 along the UU' direction. In some examples, as shown in Figure 19, the orthographic projection of the second auxiliary organic insulating layer 282 onto the substrate 10 can cover the orthographic projections of multiple first data bending lines 252 and multiple first touch bending lines 522 of the bending region B12 onto the substrate 10.

[0135] This example demonstrates how the bending stress of the touch lead wire can be adjusted by providing a second auxiliary organic insulating layer in the bending area. Further details regarding the display panel of this example can be found in the description of the foregoing embodiments and will not be repeated here.

[0136] Figure 20 is another partial cross-sectional view along the QQ' direction in Figure 2. Figure 21 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 20 and 21, the display panel may further include: a first auxiliary organic insulating layer 281 and a second touch bending line 524 located in the bending region B12. The first auxiliary organic insulating layer 281 may be located on the side of the second touch bending line 524 away from the substrate 10, and on the side of the first touch bending line 522 close to the substrate 10. The first touch bending line 522 may be electrically connected to the second touch bending line 524 through multiple vias formed in the first auxiliary organic insulating layer 281.

[0137] In some examples, the first touch bend line 522 can be co-layered with the first or second touch conductive layer of the display area; the second touch bend line 524 can be co-layered with the first data bend line 252 and with the second source / drain metal layer of the display area; the first auxiliary organic insulating layer 281 can be co-layered with the second planarization layer or pixel definition layer of the display area. In other examples, the second touch bend line 524 and the first data bend line 252 can be different layers. For example, the second touch bend line 524 can be co-layered with the first source / drain metal layer of the display area, and the first data bend line 252 can be co-layered with the second source / drain metal layer of the display area.

[0138] In some examples, the orthographic projection of the first auxiliary organic insulating layer 281 onto the substrate 10 may cover the orthographic projections of the first data bend line 252, the first touch bend line 522, and the second touch bend line 524 onto the substrate 10 of the bend region B12. In other examples, the orthographic projection of the first auxiliary organic insulating layer 281 onto the substrate 10 may cover the orthographic projections of the first touch bend line 522 and the second touch bend line 524 onto the substrate 10 of the bend region B12, and may not overlap with the orthographic projection of the first data bend line 252 onto the substrate.

[0139] This example reduces the resistance of the touch leads and lowers the risk of breakage during bending by providing an interconnected first touch bend line 522 and second touch bend line 524 in the bending area. Further details regarding the display panel of this example can be found in the description of the foregoing embodiments and will not be repeated here.

[0140] Figure 22 is another partial cross-sectional view along the PP' direction in Figure 2. Figure 23 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figures 22 and 23, the display panel may further include: a first auxiliary organic insulating layer 281, a second data bending line 254, and a second touch bending line 524 located in the bending region B12. The second data bending line 254 may be located on the side of the first data bending line 252 away from the substrate 10, and the second touch bending line 524 may be located on the side of the first touch bending line 522 closer to the substrate 10. For example, the second data bending line 254 and the first touch bending line 522 may be in the same layer, such as in the same layer as the first touch conductive layer or the second touch conductive layer of the display area. The second touch bending line 524 and the first data bending line 252 may be in the same layer, such as in the same layer as the second source / drain metal layer of the display area.

[0141] In some examples, the first auxiliary organic insulating layer 281 may be located on the side of the second data bend line 254 closer to the substrate 10 and on the side of the first data bend line 252 away from the substrate 10. The second data bend line 254 may be electrically connected to the first data bend line 252 through a plurality of vias formed in the first auxiliary organic insulating layer 281.

[0142] In some examples, the orthographic projection of the second data bend line 254 onto the substrate 10 may overlap the orthographic projection of the first data bend line 252 onto the substrate 10.

[0143] This example reduces the resistance of the data leads and lowers the risk of breakage during bending by providing interconnected first data bend lines 252 and second data bend lines 254 in the bending area. Further details regarding the display panel of this example can be found in the description of the foregoing embodiments and will not be repeated here.

[0144] Figure 24 is another partial cross-sectional view along the UU' direction in Figure 2. In some examples, as shown in Figure 24, the first touch bend line 522 can be co-layered with the first or second touch conductive layer of the display area, and the first data bend line 252 can be co-layered with the second source / drain metal layer of the display area. A first auxiliary organic insulating layer 281 can be disposed between the first touch bend line 522 and the first data bend line 252. The orthographic projection of the first touch bend line 522 onto the substrate can at least partially overlap with the orthographic projection of the first data bend line 252 onto the substrate. For example, the linewidth L1 of the first touch bend line 522 can be greater than the linewidth L2 of the second data bend line 252.

[0145] In this example, the resistance of the touch lead-out line can be reduced by increasing the line width of the first touch bending line 522, thus reducing the risk of the touch lead-out line breaking during bending. Further descriptions of the display panel in this example can be found in the foregoing embodiments and will not be repeated here.

[0146] Figure 25 is a schematic diagram of a display device according to at least one embodiment of the present disclosure. In some examples, as shown in Figure 25, the display panel 910 can be an OLED display panel. The display device 91 can be any product or component with display function, such as an OLED display device, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. However, this embodiment is not limited thereto.

[0147] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0148] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A display panel, comprising: The substrate includes a display area and a first border area located on one side of the display area, the first border area including: a bent area and a first sub-region located between the bent area and the display area; A display structure layer and a touch structure layer are located in the display area. The touch structure layer is located on the side of the display structure layer away from the substrate, and the touch structure layer includes a plurality of touch electrodes. Multiple touch leads are located in the first frame area and connected to the multiple touch electrodes; at least one of the multiple touch leads includes: a first sub-touch lead located in the first sub-region and a first touch bend line located in the bend area; the first sub-touch lead and the first touch bend line of the at least one touch lead are an integral structure.

2. The display panel according to claim 1, wherein, The touch structure layer includes at least one touch conductive layer, and the plurality of touch leads are in the same layer as the at least one touch conductive layer.

3. The display panel according to claim 1, wherein, The first border area further includes: a second sub-region located on the side of the bent area away from the display area; The at least one touch lead further includes: a second sub-touch lead located in the second sub-region; The second sub-touch lead of the at least one touch lead is integral with the first touch bend line; or, the second sub-touch lead of the at least one touch lead is connected to the first touch bend line through a touch connection electrode, the second sub-touch lead is located on the side of the touch connection electrode closer to the substrate, and the first touch bend line is located on the side of the touch connection electrode away from the substrate.

4. The display panel according to claim 3, wherein, The display structure layer includes multiple sub-pixels and multiple data lines, and the multiple sub-pixels are connected to the multiple data lines; The display panel further includes: multiple data leads located in the first frame area, the multiple data leads being connected to the multiple data lines; At least one of the multiple data leads includes: a first sub-data lead located in the first sub-region, a first data bend located in the bend region, and a second sub-data lead located in the second sub-region; the first data bend is connected between the first sub-data lead and the second sub-data lead; the first data bend is located in a different conductive layer from the first sub-data lead and the second sub-data lead.

5. The display panel according to claim 4, wherein, The first sub-data lead and the second sub-data lead of the at least one data lead are located on the side of the first data bend line closer to the substrate; one end of the first data bend line is connected to the first sub-data lead through a first data connection electrode, and the other end of the first data bend line is connected to the second sub-data lead through a second data connection electrode. The first data connection electrode and the second data connection electrode are of the same layer structure. The first data connection electrode and the second data connection electrode are located on the side of the first sub-data lead away from the substrate and on the side of the first data bend line close to the substrate.

6. The display panel according to claim 4, further comprising: A first auxiliary organic insulating layer is located in the bending region. The first auxiliary organic insulating layer is located on the side of the conductive layer where the first data bending line is located away from the substrate, and on the side of the conductive layer where the first touch bending line is located close to the substrate.

7. The display panel according to claim 6, wherein, The orthographic projection of the first auxiliary organic insulating layer onto the substrate covers the orthographic projections of the multiple first data bending lines onto the substrate, and does not overlap with the orthographic projections of the multiple first touch bending lines onto the substrate.

8. The display panel according to claim 7, wherein, The first auxiliary organic insulating layer includes: a plurality of independently disposed auxiliary insulating strips, wherein the orthographic projection of each auxiliary insulating strip on the substrate covers at least one orthographic projection of the first data bend line on the substrate.

9. The display panel according to claim 6, wherein, The orthographic projection of the first auxiliary organic insulating layer onto the substrate covers the orthographic projections of the first data bending lines and the first touch bending lines onto the substrate.

10. The display panel according to claim 9, further comprising: A second auxiliary organic insulating layer is located in the bending region, and the second auxiliary organic insulating layer is located on the side of the first touch bending line away from the substrate.

11. The display panel according to claim 10, wherein, The orthographic projection of the second auxiliary organic insulating layer on the substrate at least partially overlaps with the orthographic projections of the plurality of first touch bending lines on the substrate, but does not overlap with the orthographic projections of the plurality of first data bending lines on the substrate. Alternatively, the orthographic projection of the second auxiliary organic insulating layer on the substrate at least partially overlaps with the orthographic projections of the plurality of first touch bend lines and the plurality of first data bend lines on the substrate.

12. The display panel according to claim 9, further comprising: The second touch bend line is located in the bending area. The second touch bend line is located on the side of the first auxiliary insulating layer near the substrate. The first touch bend line is connected to the second touch bend line through a plurality of vias formed in the first auxiliary organic insulating layer.

13. The display panel according to claim 12, wherein, The second touch-sensitive bend line and the first data bend line are on the same layer.

14. The display panel according to claim 9, further comprising: The second data bend line is located in the bending region. The second data bend line is located on the side of the first auxiliary organic insulating layer away from the substrate. The second data bend line is connected to the first data bend line through a plurality of vias formed in the first auxiliary organic insulating layer.

15. The display panel according to claim 14, wherein, The second data bend line and the first touch bend line are on the same layer.

16. The display panel according to claim 1, further comprising: The second touch bend line is located in the bending area, and is located on the side of the first touch bend line closer to the substrate, and is in direct contact with the first touch bend line.

17. The display panel according to claim 1, wherein, The substrate further includes a second border region located on the remaining side of the display area, and the at least one touch lead further includes a third sub-touch lead located in the second border region, wherein the first sub-touch lead and the third sub-touch lead are integrally formed.

18. A display device comprising a display panel as claimed in any one of claims 1 to 17.

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