Display panel and display device

Abstract

The present application discloses a display panel and a display device, which can solve the problem of short circuits between a driving circuit and different wires. The display panel comprises, on one side of a substrate: a driving circuit arranged in a border area; a driving signal bus arranged in the border area and located on the side of the driving circuit away from a display area; a driving signal wire arranged in the display area; a plurality of driving connection wires each of which comprises at least two first sub-wires spaced apart from each other and at least one second sub-wire, wherein the extension direction of the first sub-wires intersects the extension direction of the second sub-wire, and in a direction perpendicular to the plane where the substrate is located, at least the first sub-wires are arranged on one side of the driving circuit; and a first insulating layer arranged between the first sub-wires and the driving circuit in the direction perpendicular to the plane where the substrate is located; wherein the driving signal bus is connected to the driving signal wire by means of the plurality of first sub-wires, and the second sub-wire at least connects two adjacent first sub-wires.

Description

Display panel and display device Cross-reference to related applications

[0001] This application claims priority to Chinese Patent Application No. 2024106581187, filed on May 24, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of display, and relates to a display panel and a display device. BACKGROUND

[0003] An organic light-emitting diode (OLED) display panel, as a new generation of light-emitting display technology after a liquid crystal display panel, has advantages of wide visual angle, high contrast, bright colors, flexible display, and the like, and has been widely applied to various mobile phones, notebook computers, wearable devices, and the like. With the progress of display technology, foldable display panels have been developed, and the foldable display panels and foldable display terminals have advantages of large display area and small carrying volume.

[0004] However, in the related art, after repeated folding of the foldable display panel, when an electrical signal is transmitted from a frame area to a display area at a bendable portion of the foldable display panel, a problem of short circuit between a driving circuit and different traces is prone to occur. SUMMARY

[0005] Embodiments of the present disclosure provide a display panel and a display device, which can solve the problem of short circuit between a driving circuit and different traces when an electrical signal is transmitted from a frame area to a display area at a bendable portion of a foldable display panel after repeated folding of the foldable display panel in the related art.

[0006] In a first aspect, a display panel is provided, comprising a display area and a frame area located at least one side of the display area, the display panel comprising at least one bendable portion and at least one non-bendable portion located at at least one side of the bendable portion, the display panel comprising a substrate and at least one of:

[0007] a driving circuit, located at the frame area;

[0008] a driving signal bus, located at the frame area and at a side of the driving circuit away from the display area;

[0009] a driving signal trace, located at the display area;

[0010] The plurality of driving connection wires includes at least two first sub-wires arranged at intervals and at least one second sub-wire, the extension direction of the first sub-wire intersects the extension direction of the second sub-wire, and at least the first sub-wire is arranged on one side of the driving circuit in the direction perpendicular to the plane where the substrate is located;

[0011] The first insulating layer is arranged between the first sub-wire and the driving circuit in the direction perpendicular to the plane where the substrate is located;

[0012] The driving signal bus and the driving signal wire are connected through a plurality of first sub-wires, and the second sub-wire connects at least two adjacent first sub-wires.

[0013] In some embodiments, the area occupied by the driving connection wires of the bendable part in the projection of the unit area of the substrate is less than the area occupied by the driving connection wires of the non-bendable part.

[0014] In some embodiments, the density of the first sub-wire of the bendable part is less than the density of the first sub-wire of the non-bendable part; or / and

[0015] The width of the first sub-wire of the bendable part is less than the width of the first sub-wire of the non-bendable part.

[0016] In some embodiments, the density of the second sub-wire of the bendable part is less than the density of the second sub-wire of the non-bendable part; or / and

[0017] The width of the second sub-wire of the bendable part is less than the width of the second sub-wire of the non-bendable part.

[0018] In some embodiments, the density of the second sub-wire in the bendable part is 0, and the density of the first sub-wire in the bendable part is greater than 0.

[0019] In some embodiments, the density of the first sub-wire and the second sub-wire in the bendable part is 0.

[0020] In some embodiments, the driving circuit includes at least one driving circuit wire arranged between the driving signal bus and the driving signal wire;

[0021] At least in the bendable part, the orthographic projection of the second sub-wire on the substrate does not overlap with the orthographic projection of the driving circuit wire on the substrate.

[0022] In some embodiments, the first sub-wire does not overlap with the center line of the bendable part, and the extension direction of the center line of the bendable part is parallel to the extension direction of the folding axis of the bendable part.

[0023] In some embodiments, in the bendable part and the non-bendable part, each of the plurality of driving connection wires comprises a plurality of first sub-wires and at least one second sub-wire, the first sub-wires are in strip shape, and two adjacent first sub-wires are arranged in a spaced manner.

[0024] In some embodiments, in the non-bendable part, at least part of the driving connection wires are connected to each other in a grid shape as a whole.

[0025] In some embodiments, the film layer structure of the display panel comprises: a first conductive layer arranged on one side of the substrate, a second insulating layer arranged on a side of the first conductive layer away from the substrate, a second conductive layer arranged on a side of the second insulating layer away from the substrate, the first insulating layer arranged on a side of the second conductive layer away from the substrate, and the third conductive layer arranged on a side of the first insulating layer away from the substrate.

[0026] The driving signal bus is at least composed of part of the first conductive layer, the second conductive layer and the third conductive layer;

[0027] The driving connection wire is at least composed of part of the third conductive layer.

[0028] In some embodiments, the driving circuit comprises a plurality of gate driving circuit units, and the first sub-wire is located on a side of the driving circuit away from the substrate.

[0029] In some embodiments, further comprising a light emitting device arranged on one side of the substrate.

[0030] The light emitting device comprises oppositely arranged first and second electrodes, and a light emitting material layer arranged between the first and second electrodes.

[0031] The pixel circuit is arranged in the display area and is electrically connected to the first electrode.

[0032] The driving signal wire is electrically connected to the second electrode of the light emitting device.

[0033] In a second aspect, the display device comprises the display panel as described in any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0034] FIG. 1 is a first overall top view of a display panel according to an embodiment of the present disclosure;

[0035] FIG. 2 is a first overall side view of a display panel according to an embodiment of the present disclosure;

[0036] FIG. 3 is a second overall top view of a display panel according to an embodiment of the present disclosure;

[0037] FIG. 4 is a second overall side view of a display panel according to an embodiment of the present disclosure;

[0038] FIG. 5 is a first partial top view of a display panel according to an embodiment of the present disclosure;

[0039] FIG. 6 is a cross-sectional view of a display area of a display panel according to an embodiment of the present disclosure;

[0040] FIG. 7 is a cross-sectional view of the C-C dashed line portion of FIG. 5;

[0041] FIG. 8 is a second partial top view of a display panel according to an embodiment of the present disclosure;

[0042] FIG. 9 is a third partial top view of a display panel according to an embodiment of the present disclosure;

[0043] FIG. 10 is a fourth partial top view of a display panel according to an embodiment of the present disclosure;

[0044] FIG. 11 is a fifth partial top view of a display panel according to an embodiment of the present disclosure;

[0045] FIG. 12 is a sixth partial top view of a display panel according to an embodiment of the present disclosure;

[0046] FIG. 13 is a cross-sectional view of the D-D dashed line portion of FIG. 12;

[0047] FIG. 14 is a seventh partial top view of a display panel according to an embodiment of the present disclosure;

[0048] FIG. 15 is a cross-sectional view of the C-C dashed line portion of FIG. 14. DETAILED DESCRIPTION

[0049] In order to better understand the technical solutions provided by the embodiments of the present disclosure, the technical solutions of the embodiments of the present disclosure will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present disclosure and the specific embodiments are detailed descriptions of the technical solutions of the embodiments of the present disclosure, and are not limitations of the technical solutions of the present disclosure. In the case of no conflict, the technical features in the embodiments of the present disclosure and the specific embodiments can be combined with each other.

[0050] In this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element. The terms "two or more" and "a plurality of" include two or more and are not limited to only two or more.

[0051] In the related art, the driving circuit (for example, the gate driving circuit) is arranged in the frame area, the driving signal bus is arranged in the frame area, and the driving signal bus is located on the side of the driving circuit away from the display area, the driving signal wires are arranged in the display area, the electrical signal of the driving signal bus is connected with the driving signal wires through the connection wires, so that the electrical signal of the driving signal bus is transmitted to the driving signal wires, and a plurality of driving connection wires are arranged on the side of the driving circuit in the direction perpendicular to the plane where the substrate is located. However, in the foldable display panel, after repeated folding or bending, the connection wires and the driving circuit are prone to short circuit in the bendable part, so that the driving signal bus and the driving signal wires are short-circuited with the driving circuit, resulting in display defects such as dark spots of the display panel.

[0052] Therefore, the display panel and the display device provided by the present disclosure can solve the problem of display dark spots caused by short circuit between the driving circuit and different wires in the related art.

[0053] The display panel provided by the present disclosure comprises a display area and a frame area located at least one side of the display area, the display panel comprises at least one bendable part and a non-bendable part located at least one side of the bendable part, the display panel comprises a substrate, and a driving circuit provided at one side of the substrate and located in the frame area, a driving signal bus provided in the frame area and located at one side of the driving circuit away from the display area, a driving signal trace provided in the display area, a plurality of driving connection traces comprising at least two first sub-lines and at least one second sub-line, the extension direction of the first sub-line intersects with the extension direction of the second sub-line, and at least the first sub-line is provided at one side of the driving circuit in the direction perpendicular to the plane where the substrate is located, a first insulating layer provided between the first sub-line and the driving circuit in the direction perpendicular to the plane where the substrate is located, the driving signal bus and the driving signal trace are connected through a plurality of the first sub-lines, and the second sub-line connects at least two adjacent first sub-lines.

[0054] The present disclosure also provides a display device comprising the aforementioned display panel.

[0055] The following embodiments are described in detail respectively, and the implementation features in different embodiments can be combined with each other.

[0056] Please refer to FIG. 1 to FIG. 4, FIG. 1 is a first overall top view of a display panel provided by an embodiment of the present disclosure; FIG. 2 is a first overall side view of a display panel provided by an embodiment of the present disclosure; FIG. 3 is a second overall top view of a display panel provided by an embodiment of the present disclosure; and FIG. 4 is a second overall side view of a display panel provided by an embodiment of the present disclosure.

[0057] Please refer to FIG. 5 to FIG. 7, FIG. 5 is a first partial top view of a display panel provided by an embodiment of the present disclosure; FIG. 6 is a sectional structure schematic view of a display area of a display panel provided by an embodiment of the present disclosure; and FIG. 7 is a sectional structure schematic view of the C-C dotted line in FIG. 5. FIG. 5 is also an enlarged schematic view of the dotted line frame 100K1 in FIG. 1. FIG. 7 is also a sectional structure schematic view of a first non-display area of a display panel provided by an embodiment of the present disclosure. In FIG. 5, the partial structure of the driving circuit 51 is shielded by the driving connection trace 53 at the first dotted line circle XX1, and the structure of the driving circuit 51 is continuous, for example, the driving circuit trace 512 is continuously extended.

[0058] Please refer to FIGS. 8-11, FIG. 8 is a second partial top view of a display panel according to an embodiment of the present disclosure; FIG. 9 is a third partial top view of a display panel according to an embodiment of the present disclosure; FIG. 10 is a fourth partial top view of a display panel according to an embodiment of the present disclosure; and FIG. 11 is a fifth partial top view of a display panel according to an embodiment of the present disclosure.

[0059] Please refer to FIGS. 12-15, FIG. 12 is a sixth partial top view of a display panel according to an embodiment of the present disclosure; FIG. 13 is a cross-sectional view of the D-D line in FIG. 12; FIG. 14 is a seventh partial top view of a display panel according to an embodiment of the present disclosure; and FIG. 15 is a cross-sectional view of the C-C line in FIG. 14.

[0060] The present disclosure provides a display panel 100, the display panel 100 comprising a display area AA and a frame area BB located at least one side of the display area AA, the display panel 100 comprising at least one bendable part FF1 and a non-bendable part FF2 located at least one side of the bendable part FF1, the display panel 100 comprising a substrate 11, the display panel 100 further comprising a driving circuit 51, a driving signal bus 52, a driving signal wire 54, a plurality of driving connection wires 53 and a first insulating layer 20 located at one side of the substrate 11. The driving circuit 51 is located in the frame area BB; the driving signal bus 52 is located in the frame area BB and is located at a side of the driving circuit 51 away from the display area AA; the driving signal wire 54 is located in the display area AA; the plurality of driving connection wires 53 comprises at least two first sub-wires 531 and at least one second sub-wire 532, the extension direction of the first sub-wire 531 intersects the extension direction of the second sub-wire 532, and at least the first sub-wire 531 is located at a side of the driving circuit 51 in a direction perpendicular to the plane on which the substrate 11 lies; the first insulating layer 20 is located between the first sub-wire 531 and the driving circuit 51 in a direction perpendicular to the plane on which the substrate 11 lies; the driving signal bus 52 and the driving signal wire 54 are connected by the plurality of first sub-wires 531, and the second sub-wire 532 connects at least two adjacent first sub-wires 531.

[0061] For example, the substrate 11 can be glass or a flexible substrate, and the flexible substrate can be polyimide, which is not limited herein.

[0062] For example, FIG. 1 shows that the display panel 100 comprises a display area AA and a frame area BB (non-display area), and a plurality of sub-pixels can be arranged in the display area AA to display an image. In the frame area BB, a driving circuit 51, a driving signal bus 52 and a plurality of driving connection wires 53 can be arranged to provide corresponding electrical signals to the display area AA.

[0063] For example, the border area BB is located at least one side of the display area AA, and in some embodiments, the border area BB is arranged around the display area AA.

[0064] For example, FIG. 1 and FIG. 2 illustrate that the display panel 100 includes one foldable part FF1 and non-foldable parts FF2 arranged on both sides of the foldable part FF1, and FIG. 3 and FIG. 4 illustrate that the display panel 100 includes two foldable parts FF1 and non-foldable parts FF2 arranged on one side or both sides of the foldable parts FF1.

[0065] For example, the foldable part FF1 can be folded or bent, so that the display panel 100 is a foldable display panel.

[0066] For example, in the border area BB, the driving signal bus 52 is arranged on the side of the driving circuit 51 away from the display area AA, and the electrical signal of the driving signal bus 52 needs to be provided to the driving signal trace 54 located in the display area AA.

[0067] For example, in the direction perpendicular to the extension direction of the driving signal bus 52, the driving signal bus 52 can have a larger width to reduce the resistance value of the driving signal bus 52.

[0068] For example, part of the driving connection trace 53 is a first sub-line 531, and at least two first sub-lines 531 are arranged at intervals, and at least one driving connection trace 53 is a second sub-line 532.

[0069] For example, the driving signal bus 52 and the driving signal trace 54 are connected by a plurality of first sub-lines 531, one end of the first sub-line 531 can be connected to the driving signal bus 52, and the other end of the first sub-line 531 can be connected to the driving signal trace 54.

[0070] For example, one second sub-line 532 can connect two adjacent first sub-lines 531 or a plurality of first sub-lines 531, and the second sub-line 532 can not only reduce the resistance of the driving connection trace 53, but also provide electrical signals from adjacent first sub-lines 531 through the second sub-line 532 when a first sub-line 531 breaks.

[0071] For example, as shown in FIG. 5, the first direction X is parallel to the boundary line between the display area AA and the border area BB, and the second direction Y is perpendicular to the boundary line between the display area AA and the border area BB. For example, FIG. 5 illustrates that the extension directions of the driving signal bus 52, the second sub-line 532, the driving signal trace 54, and the driving circuit trace 512 are consistent, for example, all extending along the second direction Y. The first sub-line 531 extends along the first direction X, but is not limited thereto. The extension direction of the first sub-line 531 can not be a straight line, as illustrated by the dashed line D-D in FIG. 12.

[0072] For example, the first insulating layer 20 is arranged between the first sub-wire 531 and the driving circuit 51 in a direction perpendicular to the plane on which the substrate 11 is located, so as to insulate the driving connection trace 53 from the driving circuit 51.

[0073] For example, in some embodiments, the first sub-wire 531 and the second sub-wire 532 are formed by the same conductive layer. In other embodiments, the first sub-wire 531 and the second sub-wire 532 can be formed by different conductive layers, and the first sub-wire 531 and the second sub-wire 532 can be connected by a via in the insulating layer, as long as the driving connection trace 53 is insulated from the driving circuit 51.

[0074] In the present disclosure, the plurality of driving connection traces 53 includes at least two first sub-wires 531 arranged at intervals, and at least one second sub-wire 532, the driving signal bus 52 and the driving signal trace 54 being connected by the plurality of first sub-wires 531, and the second sub-wire 532 connecting at least two adjacent first sub-wires 531. Compared with connecting the driving signal bus 52 and the driving signal trace 54 by a full-surface or large-area connection trace, the area of the driving connection trace 53 in the foldable part FF1 is reduced, and the risk of short circuit between the driving connection trace 53 and the driving circuit 51 (for example, a crack in the first insulating layer 20, which can cause short circuit between the driving connection trace 53 on the upper and lower sides of the first insulating layer 20 and the driving circuit 51) can be reduced after repeated folding of the foldable part FF1. At the same time, the second sub-wire 532 not only reduces the resistance of the driving connection trace 53, but also provides electrical signals from adjacent first sub-wires 531 when a first sub-wire 531 is broken, thereby improving the stability and uniformity of the electrical signals on the driving signal trace 54.

[0075] In some embodiments, as shown in FIGS. 8-12 and 14, the area occupied by the driving connection trace 53 in the foldable part FF1 in the projection of the unit area substrate 11 is less than the area occupied by the driving connection trace 53 in the non-foldable part FF2.

[0076] For example, in an embodiment, the area occupied by the driving connection trace 53 in the foldable part FF1 in the projection of the unit area substrate 11 can be understood as the ratio of the total area of the driving connection trace 53 in the bezel area BB in the foldable part FF1 to the total area of the foldable part FF1 (the total area of the substrate 11 in the foldable part FF1).

[0077] For example, in an embodiment, the area occupancy of the driving connection wires 53 in the non-flexible part FF2 can be understood as the ratio of the total area of the driving connection wires 53 in the non-flexible part FF2 (the total area of the base 11 in the non-flexible part FF2) to the total area of the non-flexible part FF2 on one side or both sides of the flexible part FF1 (for example, in the non-flexible part FF2 adjacent to the flexible part FF1; for example, in a 2 cm length region of the non-flexible part FF2 adjacent to the flexible part FF1 in the second direction Y) in the frame area BB.

[0078] For example, compared with the non-flexible part FF2, by reducing the area occupancy of the driving connection wires 53 in the unit area of the flexible part FF1, the risk of short circuit of the driving connection wires 53 and the driving circuit 51 can be reduced. At the same time, the area occupancy of the driving connection wires 53 in the unit area of the non-flexible part FF2 is large, which can reduce the resistance of the driving connection wires 53.

[0079] For example, in some embodiments, the area occupancy of the first sub-wires 531 of the flexible part FF1 in the projection of the unit area of the base 11 is less than the area occupancy of the first sub-wires 531 of the non-flexible part FF2.

[0080] For example, in some embodiments, the area occupancy of the second sub-wires 532 of the flexible part FF1 in the projection of the unit area of the base 11 is less than the area occupancy of the second sub-wires 532 of the non-flexible part FF2.

[0081] In some embodiments, as shown in FIG. 8, the density of the first sub-wires 531 of the flexible part FF1 is less than the density of the first sub-wires 531 of the non-flexible part FF2; or / and, the width of the first sub-wires 531 of the flexible part FF1 is less than the width of the first sub-wires 531 of the non-flexible part FF2.

[0082] For example, in some embodiments, the area occupancy of the driving connection wires 53 in the unit area of the flexible part FF1 can be reduced by reducing the density of the first sub-wires 531 of the flexible part FF1 (for example, reducing the arrangement density of the first sub-wires 531 in the flexible part FF1).

[0083] For example, in some embodiments, the area occupancy of the driving connection wires 53 in the unit area of the flexible part FF1 can also be reduced by reducing the width of the first sub-wires 531 of the flexible part FF1 (for example, increasing the spacing between two adjacent first sub-wires 531 in the flexible part FF1, or reducing the first width d1 shown in FIG. 8).

[0084] In some embodiments, as shown in FIG. 9, the density of the second sub-wires 532 in the bendable part FF1 is less than the density of the second sub-wires 532 in the non-bendable part FF2; or / and the width of the second sub-wires 532 in the bendable part FF1 is less than the width of the second sub-wires 532 in the non-bendable part FF2.

[0085] For example, in some embodiments, the area occupied by the driving connection wires 53 in the bendable part FF1 per unit area can be reduced by reducing the density of the second sub-wires 532 in the bendable part FF1 (for example, reducing the arrangement density of the second sub-wires 532 in the bendable part FF1).

[0086] For example, in some embodiments, the area occupied by the driving connection wires 53 in the bendable part FF1 per unit area can also be reduced by reducing the width of the second sub-wires 532 in the bendable part FF1 (for example, increasing the spacing between two adjacent second sub-wires 532 in the bendable part FF1, or reducing the second width d2 shown in FIG. 9).

[0087] For example, in some other embodiments, the first sub-wires 531 and the second sub-wires 532 can be improved at the same time to reduce the area occupied by the driving connection wires 53 in the bendable part FF1 per unit area.

[0088] In some embodiments, as shown in FIG. 10, the density of the second sub-wires 532 in the bendable part FF1 is 0, and the density of the first sub-wires 531 in the bendable part FF1 is greater than 0.

[0089] For example, in the bendable part FF1, the number of the second sub-wires 532 is 0, and the number of the first sub-wires 531 is greater than 0.

[0090] For example, as shown in FIG. 10, the density of the second sub-wires 532 in the bendable part FF1 being 0 means that the number of the second sub-wires 532 in the bendable part FF1 is 0, or the second sub-wires 532 are not arranged in the bendable part FF1.

[0091] For example, during the folding process of the display panel 100, the extension direction of the second sub-wires 532 is not parallel to the extension direction of the folding axis 100Z (FIG. 10 shows that the extension direction of the second sub-wires 532 is perpendicular to the folding axis 100Z), so that the second sub-wires 532 are more likely to break than the first sub-wires 531. Arranging the density of the second sub-wires 532 in the bendable part FF2 to be 0 can avoid the second sub-wires 532 from breaking and piercing the first insulating layer 20, thereby avoiding the short circuit between the second sub-wires 532 and the driving circuit 51.

[0092] In some embodiments, as shown in FIG. 11, the density of the first sub-wires 531 and the second sub-wires 532 in the bendable part FF1 is 0.

[0093] For example, as shown in FIG. 11, the density of the first sub-wire 531 and the second sub-wire 532 at the foldable portion FF1 is 0, which means that the number of the first sub-wire 531 and the second sub-wire 532 at the foldable portion FF1 is 0, or the first sub-wire 531 and the second sub-wire 532 are not arranged at the foldable portion FF1.

[0094] For example, in some embodiments, the length of the foldable portion FF1 in the second direction Y is small, and the density of the first sub-wire 531 and the second sub-wire 532 at the foldable portion FF1 can be 0, that is, the area occupied by the driving connection wire 53 in the unit area of the foldable portion FF1 is 0, thereby completely avoiding the risk of short circuit between the second sub-wire 532 and the driving circuit 51 after repeated folding.

[0095] In some embodiments, in any of the above embodiments, as shown in FIG. 8, the driving circuit 51 includes at least one driving circuit wire 512 arranged between the driving signal bus 52 and the driving signal wire 54; and at least in the foldable portion FF1, the orthogonal projection of the second sub-wire 532 on the substrate 11 and the orthogonal projection of the driving circuit wire 512 on the substrate 11 do not overlap.

[0096] For example, in the foldable portion FF1, the orthogonal projection of the second sub-wire 532 on the substrate 11 and the orthogonal projection of the driving circuit wire 512 on the substrate 11 do not overlap, which can reduce the thickness of the metal layer at the position of the second sub-wire 532 of the foldable portion FF1, thereby reducing the risk of breakage of the driving circuit wire 512 and the second sub-wire 532. At the same time, the short circuit between the second sub-wire 532 and the driving circuit wire 512 is avoided.

[0097] In some embodiments, in any of the above embodiments, as shown in FIG. 8, the first sub-wire 531 does not overlap the center line 100ZX of the foldable portion FF1, and the extension direction of the center line 100ZX of the foldable portion FF1 is parallel to the extension direction of the folding axis 100Z of the foldable portion FF1.

[0098] For example, when the display panel 100 is folded, the folding angle at the center line 100ZX of the foldable portion FF1 is the largest, and the film layer is most likely to be broken or short-circuited at this position. The first sub-wire 531 does not overlap the center line 100ZX of the foldable portion FF1, which can reduce the risk of breakage of the first sub-wire 531, and can also avoid the first sub-wire 531 piercing the first insulating layer 20 due to breakage, thereby improving the short circuit between the first sub-wire 531 and the driving circuit 51.

[0099] In some embodiments, in any of the above embodiments, as shown in FIGS. 5, 8 and 9, in the bendable portion FF1 and the non-bendable portion FF2, the plurality of drive connection wires 53 each comprises a plurality of first sub-wires 531 and at least one second sub-wire 532, the first sub-wires 531 are in strip shape, and two adjacent first sub-wires 531 are spaced apart.

[0100] For example, in some other embodiments, as shown in FIGS. 5 and 8, in the bendable portion FF1 and the non-bendable portion FF2, the plurality of drive connection wires 53 each comprises a plurality of first sub-wires 531 and a plurality of second sub-wires 532, at least one of the first sub-wires 531 and the second sub-wires 532 is in strip shape, and two adjacent first sub-wires 531 or / and two adjacent second sub-wires 532 are spaced apart.

[0101] In some embodiments, in any of the above embodiments, as shown in FIGS. 12 and 14, in the non-bendable portion FF2, at least part of the drive connection wires 53 are connected to each other in a whole grid shape.

[0102] For example, at least in part of the non-bendable portion FF2, the plurality of drive connection wires 53 are connected to each other in a whole grid shape, at this time, the first sub-wires 531 or / and the second sub-wires 532 can extend along a non-straight line, the grid shape structure comprises a plurality of grid openings 53W, and the plurality of grid openings 53W can be arranged staggered in at least one direction.

[0103] For example, at least in part of the non-bendable portion FF2, the drive connection wires 53 are in a whole grid shape.

[0104] For example, since the non-bendable portion FF2 does not need to be repeatedly folded, the risk of short circuit in the non-bendable portion FF2 is relatively low, and the grid shape structure can increase the area of the non-bendable portion FF2 and reduce the resistance.

[0105] It should be noted that in FIGS. 12 and 14, it is shown that in the non-bendable portion FF2, at least part of the drive connection wires 53 are connected to each other in a whole grid shape, and in the bendable portion FF1, the drive connection wires are not in a grid shape.

[0106] In some embodiments, as shown in FIGS. 6, 7, 13 and 15, in any of the above embodiments, the film layer structure of the display panel 100 comprises: the first conductive layer 17 disposed on one side of the substrate 11, the second insulating layer 18 disposed on the side of the first conductive layer 17 away from the substrate 11, the second conductive layer 19 disposed on the side of the second insulating layer 18 away from the substrate 11, the first insulating layer 20 disposed on the side of the second conductive layer 19 away from the substrate 11, and the third conductive layer 21 disposed on the side of the first insulating layer 20 away from the substrate 11; the driving signal bus 52 is at least composed of parts of the first conductive layer 17, the second conductive layer 19 and the third conductive layer 21; and the driving connection wire 53 is at least composed of parts of the third conductive layer 21.

[0107] In some embodiments, the driving circuit 51 comprises a plurality of gate driving circuit units 511, and the first sub-line 531 is located on the side of the driving circuit 51 away from the substrate 11.

[0108] For example, the driving circuit 51 is a gate driving circuit, the driving circuit 51 comprises a plurality of gate driving circuit units 511 (GOA units) and a plurality of driving circuit wires 512, and the driving circuit wire 512 can be any one of a clock signal line CK, a reverse clock signal line CB, a start signal line STV, a high potential signal line VGH and a low potential signal line VGL.

[0109] In some embodiments, the display panel 100 further comprises a light emitting device 30E and a pixel circuit 101P disposed on one side of the substrate 11. The light emitting device 30E is disposed in the display area AA, the light emitting device 30E comprises a first electrode 231 and a second electrode 25 disposed opposite each other, and a light emitting material layer 30E1 disposed between the first electrode 231 and the second electrode 25; the pixel circuit 101P is disposed in the display area AA, the pixel circuit 101P is electrically connected to the first electrode 231; and the driving signal wire 54 is electrically connected to the second electrode 25 of the light emitting device 30E.

[0110] For example, one of the first electrode 231 and the second electrode 25 is an anode, and the other is a cathode. In this disclosure, the first electrode 231 is taken as an anode, and the second electrode 25 is taken as a cathode as an example.

[0111] For example, when the second electrode 25 is a cathode, the driving signal bus 52, the driving connection wire 53 and the driving signal wire 54 provide a cathode signal (VSS signal).

[0112] For example, as shown in FIG. 6, a partial film layer structure of the display panel 100 is shown. In the display area, the film layer structure of the display panel 100 includes: a substrate 11, a buffer layer 12 disposed on the substrate 11, a semiconductor layer 13 disposed on the buffer layer 12, a gate insulating layer 14 disposed on the semiconductor layer 13, a gate layer 15 disposed on the gate insulating layer 14, an interlayer insulating layer 16 disposed on the gate layer 15, a first conductive layer 17 disposed on the interlayer insulating layer 16, a second insulating layer 18 disposed on the first conductive layer 17, a second conductive layer 19 disposed on the second insulating layer 18, a first insulating layer 20 disposed on the second conductive layer 19, a third conductive layer 21 disposed on the first insulating layer 20, a third planar layer 22 (insulating material) disposed on the third conductive layer 21, a first electrode layer 23 disposed on the third planar layer 22, a pixel definition layer 24 (the pixel definition layer 24 includes a pixel opening exposing the first electrode 231 of the corresponding light emitting device 30E) disposed on the first electrode layer 23, a light emitting material layer 30E1 disposed at least partially in the pixel opening, and a second electrode layer 25 disposed on the pixel definition layer 24 and the light emitting material layer 30E1.

[0113] For example, as shown in FIG. 6, the pixel circuit 101P includes a transistor 1001PT electrically connected to the first electrode 231. The transistor 1001PT includes a semiconductor portion 131, a gate 151, a source 171, and a drain 172. The first electrode 231 is connected to the drain 172 through a first conductive connection electrode 211 and a second conductive connection electrode 191 in sequence.

[0114] For example, as shown in FIG. 6 and FIG. 7, the first conductive layer 17 includes the source 171, the drain 172, and a first drive signal bus sublayer 173, the second conductive layer 19 includes the second conductive connection electrode 191 and a second drive signal bus sublayer 192, and the third conductive layer 21 includes the first conductive connection electrode 211 and a third drive signal bus sublayer 212. In FIG. 7, FIG. 13, and FIG. 15, the drive signal bus 52 is at least composed of partial portions of the first conductive layer 17, the second conductive layer 19, and the third conductive layer 21, i.e., the drive signal bus 52 is at least composed of the first drive signal bus sublayer 173, the second drive signal bus sublayer 192, and the third drive signal bus sublayer 212.

[0115] For example, in FIG. 7, FIG. 13, and FIG. 15, the first drive signal bus sublayer 173 and the second drive signal bus sublayer 192 are overlapped or connected (the intermediate insulating layer is etched away), and the second drive signal bus sublayer 192 and the third drive signal bus sublayer 212 are overlapped or connected (the intermediate insulating layer is etched away), which can reduce impedance and simplify the process.

[0116] For example, in FIG. 7, FIG. 13 and FIG. 15, the first electrode layer 23 includes the first electrode 231 and the frame area connecting electrode 232, and the first electrode 231 and the frame area connecting electrode 232 are spaced or insulated.

[0117] For example, in FIG. 7, FIG. 13 and FIG. 15, the frame area connecting electrode 232 is overlapped or connected on the driving signal bus 52, and the second electrode 25 is overlapped or connected on the frame area connecting electrode 232, and the driving signal bus 52 and the frame area connecting electrode 232 together provide the cathode electrical signal to the display area AA.

[0118] For example, in FIG. 7, FIG. 13 and FIG. 15, the second conductive layer 19 includes the second conductive connecting electrode 191, the second driving signal bus sub-layer 192 and the second conductive driving trace 193, and at least part of the second conductive driving trace 193 can be used as the driving circuit trace 512.

[0119] It should be noted that the film layer structure of the display panel 100 is not limited to that shown in FIG. 6.

[0120] The present disclosure also provides a display device, which includes the display panel 100 of any one of the above, or the display device includes the display panel 100 combined with any one of the technical features of the above.

[0121] For example, the display device can be a mobile phone, a notebook computer, a television, etc.

[0122] In the present disclosure, the plurality of driving connection traces includes at least two first sub-lines and at least one second sub-line, the driving signal bus and the driving signal trace are connected through the plurality of first sub-lines, and the second sub-line is connected to at least two adjacent first sub-lines. Compared with the connection of the driving signal bus and the driving signal trace through the connection trace with the whole surface or large area, the area of the driving connection trace in the bendable part is reduced, and the risk of short circuit between the driving connection trace and the driving circuit (for example, the first insulating layer cracks, which may cause the short circuit between the driving connection trace on the upper and lower sides of the first insulating layer and the driving circuit) can be reduced after repeated folding in the bendable part. At the same time, the second sub-line not only reduces the resistance of the driving connection trace, but also provides the electrical signal from the adjacent first sub-line through the second sub-line when a first sub-line is broken, thereby improving the stability and uniformity of the electrical signal on the driving signal trace.

[0123] In the display panel and the display device provided by the embodiments of the present disclosure, the occupied area of the driving connection wire of the bendable part in the projection of the unit area of the base is less than the occupied area of the driving connection wire of the non-bendable part. Compared with the non-bendable part, by reducing the occupied area of the driving connection wire in the unit area of the bendable part, the short circuit risk of the driving connection wire and the driving circuit can be reduced. At the same time, the occupied area of the driving connection wire in the unit area of the non-bendable part is larger, and the resistance of the driving connection wire can be reduced.

[0124] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0125] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

[0126] Although the preferred embodiments of the present disclosure have been described, those skilled in the art can make additional changes and modifications to the embodiments once they understand the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present disclosure.

[0127] Obviously, those skilled in the art can make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure also intends to include these modifications and variations.

Claims

1. A display panel, wherein, The display panel comprises at least one bendable part and at least one non-bendable part arranged on at least one side of the bendable part. The display panel comprises a substrate and at least one driving circuit arranged on one side of the substrate. The driving circuit is arranged in the frame area. The driving signal bus is arranged in the frame area and is located on the side of the driving circuit away from the display area. The driving signal wire is arranged in the display area. The plurality of driving connection wires comprises at least two first sub-wires arranged at intervals and at least one second sub-wire. The extension direction of the first sub-wire intersects with the extension direction of the second sub-wire. In the direction perpendicular to the plane where the substrate is located, at least the first sub-wire is arranged on one side of the driving circuit. The first insulating layer is arranged between the first sub-wire and the driving circuit in the direction perpendicular to the plane where the substrate is located. The driving signal bus and the driving signal wire are connected through the plurality of first sub-wires. The second sub-wire is connected to at least two adjacent first sub-wires.

2. The display panel of claim 1, wherein, In the projection of the substrate per unit area, the area occupied by the driving connection wires of the bendable part is smaller than the area occupied by the driving connection wires of the non-bendable part.

3. The display panel of claim 2, wherein, The density of the first sub-wire of the bendable part is smaller than the density of the first sub-wire of the non-bendable part; or / and The width of the first sub-wire of the bendable part is smaller than the width of the first sub-wire of the non-bendable part.

4. The display panel of claim 2, wherein, The density of the second sub-wire of the bendable part is smaller than the density of the second sub-wire of the non-bendable part; or / and The width of the second sub-wire of the bendable part is smaller than the width of the second sub-wire of the non-bendable part.

5. The display panel of claim 2, wherein, The density of the second sub-wire in the bendable part is 0, and the density of the first sub-wire in the bendable part is greater than 0.

6. The display panel of claim 2, wherein, The density of the first sub-wire and the second sub-wire in the bendable part is 0.

7. The display panel of claim 1, wherein, The driving circuit comprises at least one driving circuit wire arranged between the driving signal bus and the driving signal wire. At least in the bendable part, the orthographic projection of the second sub-wire on the substrate does not overlap with the orthographic projection of the driving circuit wire on the substrate.

8. The display panel of claim 1, wherein, The first sub-wire does not overlap with the center line of the bendable part. The extension direction of the center line of the bendable part is parallel to the extension direction of the folding axis of the bendable part.

9. The display panel of any one of claims 1-4, 7, and 8, wherein, In the bendable part and the non-bendable part, the plurality of driving connection wires comprises a plurality of first sub-wires and at least one second sub-wire. The first sub-wire is in strip shape, and adjacent two first sub-wires are arranged at intervals.

10. The display panel of any one of claims 1 to 8, wherein, In the non-bendable part, at least part of the driving connection wires are connected to each other to form a whole grid.

11. The display panel of any one of claims 1 to 8, wherein, The film layer structure of the display panel comprises: a first conductive layer arranged on one side of the substrate, a second insulating layer arranged on a side of the first conductive layer away from the substrate, a second conductive layer arranged on a side of the second insulating layer away from the substrate, the first insulating layer arranged on a side of the second conductive layer away from the substrate, and a third conductive layer arranged on a side of the first insulating layer away from the substrate; The driving signal bus is at least composed of partial parts of the first conductive layer, the second conductive layer and the third conductive layer; The driving connection wire is at least composed of partial parts of the third conductive layer.

12. The display panel of any one of claims 1 to 8, wherein, The driving circuit comprises a plurality of gate driving circuit units, and the first sub-line is located on a side of the driving circuit away from the substrate.

13. The display panel of claim 12, wherein, Further comprising being arranged on one side of the substrate: A light emitting device arranged in the display area, the light emitting device comprising oppositely arranged first and second electrodes, and a light emitting material layer arranged between the first and second electrodes; A pixel circuit arranged in the display area, the pixel circuit being electrically connected to the first electrode; The driving signal wire is electrically connected to the second electrode of the light emitting device.

14. A display device, wherein, The display panel as claimed in any one of claims 1 to 13.

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