Display panel and display device

Abstract

The present application provides a display panel and a display device. The display panel includes a substrate, an organic layer disposed on the substrate, and a first wiring layer disposed on a side of the organic layer away from the substrate. The organic layer includes a dam located in a non-display area and a first sub-portion located on a side of the dam away from the display area. A notch is provided on a side of the first sub-portion close to the dam. At least part of the orthographic projection of the notch on the substrate is located between the orthographic projections of the first signal line and the second signal line in the first wiring layer on the substrate, so that the problem of local stress concentration caused by water vapor intrusion into the first sub-portion is solved by the notch, and the risk of cracks in the inorganic film layer inside the display panel due to stress is reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In recent years, with the development of society and the advancement of technology, users' demands for display devices have become increasingly diversified. For example, curved screen mobile phones are the trend of appearance design, and foldable screen mobile phones are the focus of attention in the near future. Among them, OLED (Organic Light-Emitting Diode) display panels are increasingly widely used due to their advantages such as bendability and good flexibility.

[0003] However, the performance of existing OLED display panels needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a display panel and a display device to solve the problem of bright lines appearing on the display screen in the existing display panel because the related signal wiring is easily corroded by water and oxygen and disconnected.

[0005] To achieve the above-mentioned object, the present invention provides a display panel, which includes a display area and a non-display area. The display panel also includes a substrate, an organic layer arranged on the substrate, and a first wiring layer arranged on a side of the organic layer away from the substrate. The organic layer includes a dam and a first sub-portion. The dam is located in the non-display area. The first sub-portion is located on a side of the dam away from the display area, and a notch is provided on a side close to the dam. The first wiring layer includes a first signal line and a second signal line arranged along a first direction, and at least a part of the orthographic projection of the notch on the substrate is located between the orthographic projections of the first signal line and the second signal line on the substrate.

[0006] Furthermore, the display panel further comprises a second wiring layer disposed between the substrate and the organic layer. Optionally, the orthographic projection of the notch on the substrate at least partially overlaps with the orthographic projection of the second wiring layer on the substrate.

[0007] Furthermore, the second routing layer includes a plurality of fan-out signal lines arranged along a second direction, and an orthographic projection of the notch on the substrate at least partially overlaps with an orthographic projection of the fan-out signal line on the substrate; and the first direction intersects with the second direction.

[0008] Optionally, the gap includes a first boundary and a second boundary opposite to each other along a first direction, and a third boundary connected between the first boundary and the second boundary, and an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the first signal line close to the second signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; and an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the second signal line close to the first signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area.

[0009] Optionally, an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of the first signal line on the substrate away from the second signal line is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of the second signal line on the substrate away from the first signal line is located on a side of the orthographic projection of the third boundary on the substrate close to the display area.

[0010] Optionally, the extension direction of the first signal line intersects with the extension direction of the fan-out signal line; and / or, the extension direction of the second signal line intersects with the extension direction of the fan-out signal line. Optionally, the orthographic projection of the fan-out signal line on the substrate overlaps with the orthographic projection of the dam on the substrate. Optionally, the extension direction of the fan-out signal line intersects with the first direction, and the extension direction of the fan-out signal line intersects with the second direction. Optionally, the organic layer includes a third sub-section, the third sub-section is located between the dam and the first sub-section, the dam, the third sub-section and the first sub-section are arranged at intervals, and at least part of the third sub-section is located in the gap; a channel is arranged between the third sub-section and the first sub-section; the orthographic projection of the fan-out signal line on the substrate overlaps with the orthographic projection of the third sub-section on the substrate. Optionally, the extension direction of the fan-out signal line is parallel to the diagonal of the gap. Optionally, the orthographic projection of at least one fan-out signal line on the substrate overlaps with the orthographic projection of the diagonal of the gap on the substrate.

[0011] Furthermore, the display panel further comprises a first insulating layer disposed between the second wiring layer and the organic layer. Optionally, the material of the first insulating layer comprises an inorganic material.

[0012] Furthermore, the organic layer includes a third sub-portion, the third sub-portion is located between the dam and the first sub-portion, the dam, the third sub-portion and the first sub-portion are arranged at intervals, at least part of the third sub-portion is located in the gap, and a channel is arranged between the third sub-portion and the first sub-portion.

[0013] Optionally, the channel includes a first channel, a second channel and a third channel. The first channel extends along the first direction. The second channel extends along the first direction. The third channel is located on a side of the first channel and the second channel away from the dam, and connects the first channel and the second channel. Optionally, the orthographic projection of the first channel on the substrate at least partially overlaps with the orthographic projection of the first signal line on the substrate. Optionally, the orthographic projection of the second channel on the substrate at least partially overlaps with the orthographic projection of the second signal line on the substrate.

[0014] Further, the first routing layer also includes a third signal line and a fourth signal line arranged along the first direction, and the third signal line and the fourth signal line are arranged between the first signal line and the second signal line. Optionally, the line width of the third signal line and the fourth signal line is smaller than the line width of the first signal line and the second signal line. Optionally, the third signal line and the fourth signal line extend along the second direction, and the first direction and the second direction intersect. Optionally, the third signal line and the fourth signal line are initial signal lines.

[0015] Furthermore, the display panel also includes a second insulating layer disposed on a side of the organic layer away from the substrate and covering the first wiring layer. Optionally, the material of the second insulating layer includes an inorganic material. Optionally, the display panel also includes a light-emitting device layer and an encapsulation layer, the light-emitting device layer is located between the substrate and the encapsulation layer, and at least part of the film layer of the encapsulation layer is in the same layer as the second insulating layer. Optionally, the encapsulation layer includes a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer stacked in sequence in a direction away from the substrate, and at least one of the first inorganic encapsulation layer and the second inorganic encapsulation layer is in the same layer as the second insulating layer.

[0016] Furthermore, the organic layer further comprises a second sub-portion, which is arranged on a side of the dam away from the first sub-portion, and at least a part of the second sub-portion is located in the display area. Optionally, the second sub-portion is spaced apart from the dam.

[0017] Further, one of the first signal line and the second signal line is connected to a high voltage, and the other is connected to a low voltage. And / or, the display panel further includes a pixel circuit and a light-emitting device, the pixel circuit is connected to the second signal line, the pixel circuit is connected to the first electrode of the light-emitting device, and the second electrode of the light-emitting device is connected to the first signal line; and / or, the organic layer is a flat layer. And / or, the organic layer is an insulating layer. And / or, the orthographic projection of the first signal line and the second signal line on the substrate is arranged to intersect with the orthographic projection of the dam on the substrate. And / or, the first signal line and the second signal line extend along the second direction, and the first direction and the second direction intersect. And / or, the dam includes a first dam and a second dam arranged at intervals, and the second dam is located between the first dam and the first sub-portion. And / or, the dam and the first sub-portion are arranged at intervals. And / or, the gap includes a first boundary and a second boundary opposite to each other along the first direction, and the orthographic projection of the first signal line and the second signal line on the substrate is located between the orthographic projection of the first boundary and the second boundary on the substrate. And / or, the portion of the orthographic projection of the dam on the substrate between the orthographic projections of the first signal line and the second signal line on the substrate extends along the first direction. And / or, the non-display area further includes a bending area, and the notch is located between the display area and the bending area.

[0018] The present invention further provides a display device, which includes the display panel as described above.

[0019] The advantages of the present invention are: a display panel and a display device of the present invention solve the problem of local stress concentration caused by water vapor invading the first sub-part by opening a gap on one side of the first sub-part in the non-display area, reduce the risk of cracks in the inorganic film layer inside the display panel due to stress, block the path of water vapor intrusion, effectively isolate water vapor, and thus improve the reliability of the display panel and increase the quality of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a schematic diagram of the top view structure of the wiring of the display panel in Embodiment 1 and Embodiment 2 of the present invention;

[0022] Figure 2 for Figure 1 The enlarged schematic diagram of the wiring at the display panel frame B2 (the structures in the frame B1 and the frame B2 can be mirror images of each other) in the embodiment 1 of the present invention;

[0023] Figure 3 for Figure 2 The cross-sectional structure diagram of the display panel at line AA';

[0024] Figure 4 for Figure 1 The enlarged schematic diagram of the wiring at the display panel frame B2 in Embodiment 2 of the present invention;

[0025] Figure 5 for Figure 4 The cross-sectional structure diagram of the display panel at line BB';

[0026] Figure 6 for Figure 1 The enlarged schematic diagram of the wiring at the display panel frame B2 in other embodiments of the present invention;

[0027] Figure 7 for Figure 1 The enlarged schematic diagram of the wiring at the display panel frame B2 in other embodiments of the present invention;

[0028] Figure 8 Schematic diagram of the layered structure of the display panel in the display area in Embodiment 1 and Embodiment 2 of the present invention;

[0029] Fig. 9 Schematic diagram of the pixel circuit in Embodiment 1 and Embodiment 2 of the present invention.

[0030] The components in the figure are shown as follows:

[0031] Display area AA; Non-display area NA;

[0032] Border area NA1; Bending area NA2;

[0033] Binding area NA3; Driving component 1;

[0034] Substrate 10; Organic layer 20;

[0035] A first sub-portion 21; a notch 22;

[0036] A first channel 221; A second channel 222;

[0037] A third channel 223; A first boundary 224;

[0038] A second boundary 225; A third boundary 226;

[0039] Dam 23; First dam 231;

[0040] The second dam 232; The second sub-portion 24;

[0041] The third sub-portion 25; The first insulating layer 30;

[0042] First wiring layer 40; First signal line 41;

[0043] A second signal line 42; A third signal line 43;

[0044] Fourth signal line 44; Second routing layer 50;

[0045] Fan-out signal line 51; Data signal line 52;

[0046] A second insulating layer 60; A pixel defining layer 70;

[0047] Pixel opening 71; Light emitting device layer 80;

[0048] First electrode 81; Light emitting layer 82;

[0049] A second electrode 83; an encapsulation layer 90;

[0050] First inorganic encapsulation layer 91; Organic encapsulation layer 92;

[0051] The second inorganic encapsulation layer 93 . DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention are described below with reference to the drawings in the specification to prove that the present invention can be implemented. The embodiments of the invention can fully introduce the present invention to those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied through many different forms of embodiments of the invention, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0053] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0054] In addition, the following descriptions of the various embodiments of the invention are made with reference to the attached diagrams to illustrate specific embodiments of the invention that the present invention can be implemented with. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0055] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" the other component through an intermediate component. "Connected" may be directly connected or indirectly connected.

[0056] Example 1

[0057] In the design of the lower frame of the relevant OLED display panel, in order to block the intrusion of water vapor from the periphery of the screen body, a groove design will be made in the organic layer between the display area and the non-display area of ​​the display panel, and a dam will be formed. The data fan-out oblique lines on both sides of the panel will inevitably overlap with the organic layer outside the dam (connected to the external environment). At the same time, in medium and large-sized display panels, there are many data routings, and the data fan-out oblique lines will inevitably overlap with other signal routings in the non-display area and the Taper angles (the angle between the side and bottom of the signal routing) of other signal routings. In the high temperature and high humidity reliability test, the inventor found that the invasion of water vapor into the organic layer will cause the problem of local stress concentration in the panel. The stress will be concentrated at the Taper angle of the organic layer and the Taper angle of other signal routings, and act on the inside of the panel, causing cracks in the inorganic film layer inside the panel. At the same time, due to the material characteristics of the organic layer, it is impossible to effectively block water vapor. The water vapor will corrode the data fan-out oblique lines along the cracks of the inorganic film layer, causing the data line to be disconnected, prompting the display panel to produce bright lines when displaying.

[0058] On the one hand, based on the technical problems found in the above-mentioned related display technologies, an embodiment of the present invention provides a display panel, such as Figure 1As shown, the display panel has a display area AA and a non-display area NA. The display area AA is used to present a display image; the non-display area NA includes a frame area NA1 arranged around the display area AA, a bending area NA2 arranged on the side of the frame area NA1 away from the display area AA, and a binding area NA3 arranged on the side of the bending area NA2 away from the display area AA. A plurality of signal traces are arranged in the frame area NA1, and the signal traces are electrically connected to the display device located in the display area AA. The bending area NA2 is used to bend the binding area NA3 to the back of the panel. The binding area NA3 is used to set a driving component 1, which can be an electronic device such as a driving chip, a flexible circuit board, etc. The driving component 1 can be fixed in the non-display area NA of the display panel through an IC Bump process. The signal traces in the frame area NA1 extend to the binding area NA3 through the bending area NA2, and are electrically connected to the driving component 1 located in the binding area NA3, so that the display device in the display area AA is electrically connected to the driving component through the corresponding signal traces to realize signal transmission.

[0059] like Figure 2 and Figure 3 As shown, the display panel includes a substrate 10, a first wiring layer 40, and an organic layer 20. The organic layer 20 is disposed on the substrate 10. The first wiring layer 40 is disposed on a side of the organic layer 20 away from the substrate 10. The organic layer 20 includes a dam 23 and a first sub-portion 21. The dam 23 is located in the non-display area. The first sub-portion 21 is located on a side of the dam 23 away from the display area AA, and a notch 22 is provided on a side of the first sub-portion 21 close to the dam 23. The first wiring layer 40 includes a first signal line 41 and a second signal line 42 arranged along a first direction X, and at least a part of the orthographic projection of the notch 22 on the substrate 10 is located between the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10.

[0060] like Figure 2 and Figure 3 As shown, the display panel includes a substrate 10 , a first wiring layer 40 , a second wiring layer 50 , a first insulating layer 30 , and part or all of an organic layer 20 .

[0061] The substrate 10 may be a flexible substrate or a rigid substrate, wherein the flexible substrate may be a PI (Polyimide) film, and the rigid substrate may be a glass substrate or a quartz substrate.

[0062] The display panel also includes a second routing layer 50 disposed between the substrate 10 and the organic layer 20. The orthographic projection of the notch 22 on the substrate 10 at least partially overlaps with the orthographic projection of the second routing layer 50 on the substrate. The second routing layer 50 is disposed on the surface of the substrate 10, and includes a plurality of signal routing lines, such as a fan-out signal line 51. For example, the second routing layer includes a plurality of fan-out signal lines 51 arranged along the second direction Y, and the orthographic projection of the notch 22 on the substrate at least partially overlaps with the orthographic projection of the fan-out signal line 51 on the substrate; the first direction X and the second direction Y intersect, for example, are perpendicular. Among them, the fan-out signal line 51 is located in the non-display area NA, one end of the fan-out signal line 51 is electrically connected to the corresponding data signal line 52, and the other end thereof is electrically connected to a driving component disposed on the non-display area NA. The data signal line 52 is located in the display area AA, and is electrically connected to the pixel circuit provided in the display area AA. The driving component is indirectly electrically connected to the pixel circuit located in the display area AA through the fan-out signal line 51 and the data signal line 52, and transmits the data signal to the pixel circuit through the fan-out signal line 51 and the data signal line 52. The pixel circuit then generates a driving current according to the data signal to drive the light-emitting device to emit light.

[0063] For example, the display panel further includes a first insulating layer 30. The first insulating layer 30 is disposed on the substrate and covers the second wiring layer 50, thereby insulating and protecting each signal wiring in the second wiring layer 50. The preparation material of the first insulating layer 30 includes an inorganic material, such as one or more of silicon oxide (SiO), silicon nitride (SiN), and silicon oxynitride (SiON). For example, the first insulating layer 30 is disposed between the second wiring layer 50 and the organic layer 20. For example, the organic layer 20 is an insulating layer.

[0064] For example, the organic layer further includes a second sub-portion, the second sub-portion is arranged on a side of the dam away from the first sub-portion, and at least a part of the second sub-portion is located in the display area. Optionally, the second sub-portion is spaced apart from the dam.

[0065] The organic layer 20 is arranged on the side of the first insulating layer 30 away from the second wiring layer 50. The organic layer 20 can be a flat layer for flattening the panel surface, which includes the first sub-section 21, the second sub-section 24 and part or all of the dam 23. The second sub-section 24, the dam 23 and the first sub-section 23 are arranged at intervals along the second direction Y. Among them, at least part of the second sub-section 24 is arranged in the display area AA, which is used to flatten the panel surface in the display area AA, which is convenient for the subsequent preparation of the light-emitting device. The dam 23 is arranged in the non-display area NA and surrounds the first sub-section 21. It is used to block the overflow of liquid materials (such as organic materials for preparing organic encapsulation layers) in the subsequent process, and is also used to prevent water vapor from invading the interior of the display area AA along the lamination gap at the edge of the display area AA, and protect the display device in the display area AA. The first sub-section 21 is arranged in the non-display area NA and is located on the side of the dam 23 away from the display area AA. It is used to flatten the panel surface in the non-display area NA, which is convenient for the subsequent connection and fixation of the driving components.

[0066] The material of the organic layer 20 includes an organic material, which can be formed by etching grooves of corresponding shapes and numbers on the organic material layer covering the entire surface through a patterning process, and interrupting the connection between different components through the grooves, thereby forming a first sub-portion 21, a dam 23 and a second sub-portion 24. In the embodiment of the present invention, the dam 23 includes a first dam 231 and a second dam 232 arranged at intervals, the first dam 231 and the second dam 232 are sequentially arranged on the outside of the second sub-portion 24, and the second dam 232 is located between the first dam 231 and the first sub-portion 21. In other embodiments of the present invention, the number of dams 23 in the organic layer 20 is not limited, and it can be 1, or 3 or more.

[0067] For example, the first signal line 41 and the second signal line 42 extend along the second direction Y.

[0068] For example, the first routing layer further includes a third signal line 43 and a fourth signal line 44 arranged along the first direction X, and the third signal line 43 and the fourth signal line 44 are arranged between the first signal line 41 and the second signal line 42. Optionally, the third signal line 43 and the fourth signal line 44 extend along the second direction Y. Optionally, the third signal line 43 and the fourth signal line 44 are initial signal lines.

[0069] The first wiring layer 40 is arranged on the surface of the organic layer 20 away from the first insulating layer 30, and includes a first signal line 41, a second signal line 42, a third signal line 43 and a fourth signal line 44 arranged along a first direction X and extending along a second direction Y intersecting the first direction X. The third signal line 43 and the fourth signal line 44 are sequentially arranged between two adjacent first signal lines 41 and the second signal line 42, and the line width W3 of the third signal line 43 and the line width W4 of the fourth signal line 44 are smaller than the line width W1 of the first signal line 41 and the line width W2 of the second signal line 42. The first signal line 41, the second signal line 42, the third signal line 43 and the fourth signal line 44 extend from the display area AA to the non-display area NA along the second direction Y, and the orthographic projections of the first sub-portion 21 and the first sub-portion 21 on the substrate 10 overlap, and the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10 are arranged to intersect with the orthographic projections of the dam 23 on the substrate 10. Further, the orthographic projection of the dam 23 on the substrate 10 between the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10 extends along the first direction X. The first signal line 41 and the second signal line 42 may be power signal lines for transmitting a high-level power signal (ELVDD) and a low-level power signal (ELVSS) (i.e., one of the first signal line 41 and the second signal line 42 is connected to a high voltage, and the other is connected to a low voltage), and the third signal line 43 and the fourth signal line 44 may be initialization signal lines for transmitting a reset signal (e.g., Vref1 and Vref2). For example, the first direction X is perpendicular to the second direction Y.

[0070] Specifically, in the non-display area NA, a plurality of fan-out signal lines 51 are arranged along the second direction Y, and the extension direction of the fan-out signal line 51 intersects the first direction X and the second direction Y, so that the orthographic projection of the fan-out signal line 51 on the substrate 10 and the orthographic projection of the signal wiring in the first wiring layer 40 on the substrate 10 have an overlapping area, that is, the extension direction of the first signal line 41 and the second signal line 42 intersects with the extension direction of the fan-out signal line 51. In addition, the orthographic projection of the fan-out signal line 51 on the substrate 10 overlaps with the orthographic projection of the dam 23 on the substrate 10.

[0071] Optionally, the organic layer 20 includes a third sub-portion 25, the third sub-portion 25 is located between the dam 23 and the first sub-portion 21, the dam 23, the third sub-portion 25 and the first sub-portion 21 are arranged at intervals, and at least a portion of the third sub-portion 23 is located in the notch 22. A channel is provided between the third sub-portion 25 and the first sub-portion 21, and the orthographic projection of the fan-out signal line 51 on the substrate 10 overlaps with the orthographic projection of the third sub-portion 25 on the substrate 10.

[0072] For example, the extension direction of the first signal line intersects with the extension direction of the fan-out signal line; and / or, the extension direction of the second signal line intersects with the extension direction of the fan-out signal line. For example, the extension direction of the fan-out signal line 51 intersects with the first direction. For example, the extension direction of the fan-out signal line intersects with the second direction.

[0073] Furthermore, a notch 22 is provided on one side of the first sub-portion 21 close to the dam 23, and the orthographic projection of the notch 22 on the substrate 10 partially overlaps with the orthographic projection of the fan-out signal line 51 in the second routing layer 50 on the substrate 10, and at least part of the orthographic projection of the notch 22 on the substrate 10 is located between the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10 (since the notch 22 has no physical structure, the "orthographic projection of the notch 22 on the substrate 10" in this article refers to the light and shadow pattern illuminated on the substrate 1 through the notch 22).

[0074] For example, the notch 22 includes a first boundary 224 and a second boundary 225 that are arranged opposite to each other along the first direction X, and a third boundary 226 connected between the first boundary 224 and the second boundary 225. For example, the overlapping area of ​​the orthographic projection of the fan-out signal line 51 on the substrate 10 and the orthographic projection of the side of the first signal line 41 close to the second signal line 42 on the substrate 10 is located on the side where the orthographic projection of the third boundary 226 on the substrate 10 is close to the display area AA. For example, the overlapping area of ​​the orthographic projection of the fan-out signal line 51 on the substrate 10 and the orthographic projection of the side of the second signal line 42 close to the first signal line 41 on the substrate 10 is located on the side where the orthographic projection of the third boundary 226 on the substrate 10 is close to the display area AA. For example, the overlapping area of ​​the orthographic projection of the fan-out signal line 51 on the substrate 10 and the orthographic projection of the side of the first signal line 41 away from the second signal line 42 on the substrate 10 is located on the side where the orthographic projection of the third boundary 226 on the substrate 10 is close to the display area AA. For example, the overlapping area of ​​the orthographic projection of the fan-out signal line 51 on the substrate 10 and the orthographic projection of the side of the second signal line 42 away from the first signal line 41 on the substrate 10 is located on the side of the orthographic projection of the third boundary 226 on the substrate 10 close to the display area AA. Among the fan-out signal lines that are at least partially located between the first signal line and the second signal line, the fewer the number of fan-out signal lines that overlap with the orthographic projection of the third boundary on the substrate 10, the farther the third boundary is from the fan-out signal line, the larger the gap area, and the more conducive to isolating water vapor.

[0075] For example, the non-display area NA also includes a bending area NA2, and the notch 22 is located between the display area AA and the bending area NA2. The notch area cannot be too large to avoid affecting the bending performance. The bending area NA2 is located between the binding area NA3 and the display area AA.

[0076] For example, the distance between the first sub-portion located on two opposite sides of the notch 22 along the first direction X and the dam 23 along the second direction Y is smaller than the distance between the third boundary 226 and the dam 23 along the second direction Y.

[0077] In other embodiments, Figure 7 As shown, the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10 may be located between the orthographic projections of the first boundary 224 and the second boundary 225 on the substrate 10 .

[0078] For example, the organic layer 20 includes a third sub-portion 25, which is located between the dam 23 and the first sub-portion 21. The dam 23, the third sub-portion 25 and the first sub-portion 21 are arranged at intervals, and at least part of the third sub-portion 23 is located in the gap 22. There is a channel between the third sub-portion 25 and the first sub-portion 21, and the channel is the remaining hollow portion after the gap 22 is partially filled by the third sub-portion 25. The channel includes a first channel 221, a second channel 222 and a third channel 223. The first channel 221 and the second channel 222 are arranged at intervals along the first direction X and extend along the second direction Y. The third sub-portion 25 is located between the first channel 221 and the second channel 222. The orthographic projection of the first channel 221 on the substrate 10 partially or completely overlaps with the orthographic projection of the first signal line 41 on the substrate 10, and the orthographic projection of the second channel 222 on the substrate 10 partially or completely overlaps with the orthographic projection of the second signal line 42 on the substrate 10. For example, the orthographic projection of the first boundary 224 on the substrate 10 overlaps with the orthographic projection of the first signal line 41 on the substrate 10, and the orthographic projection of the second boundary 225 on the substrate 10 overlaps with the orthographic projection of the second signal line 42 on the substrate 10. In other embodiments of the present invention, such as Figure 6 As shown, the first channel 221 and the second channel 222 may also only partially overlap with the first signal line 41 and the second signal line 42, respectively, that is, the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate 10 may be located between the orthographic projections of the first boundary 224 and the second boundary 225 on the substrate 10. The third channel 223 is located on the side of the first channel 221 and the second channel 222 away from the dam 23, and connects the first channel 221 and the second channel 222. The notch 22 can be prepared by a patterning process, and it can be prepared simultaneously with the first sub-portion 21, the dam 23 and the second sub-portion 24 by the same patterning process and the same mask, without adding new preparation steps and without affecting production efficiency.

[0079] For example, at least part (partial or all) of the orthographic projection of the third sub-portion 25 on the substrate 10 is located between the orthographic projection of the first signal line 41 on the substrate 10 and the orthographic projection of the second signal line 42 on the substrate 10. For example, the orthographic projection of the third sub-portion 25 on the substrate 10 is located outside the orthographic projection of the first signal line 41 on the substrate 10, and the orthographic projection of the third sub-portion 25 on the substrate 10 does not overlap with the orthographic projection of the first signal line 41 on the substrate 10. For example, the orthographic projection of the third sub-portion 25 on the substrate 10 is located outside the orthographic projection of the second signal line 42 on the substrate 10, and the orthographic projection of the third sub-portion 25 on the substrate 10 does not overlap with the orthographic projection of the second signal line 42 on the substrate 10. For example, the orthographic projection of the third sub-portion 25 on the substrate 10 is spaced apart from the orthographic projection of the first signal line 41 on the substrate 10. For example, the orthographic projection of the third sub-portion 25 on the substrate 10 is spaced apart from the orthographic projection of the second signal line 42 on the substrate 10.

[0080] By providing a notch 22 on one side of the first sub-section 21 to interrupt the stress transmission channel in the first sub-section 21, the stress generated by water vapor intrusion is prevented from being concentrated at the Taper corner of the edge of the first flat plate section, thereby reducing the stress concentrated in the common overlapping area of ​​the fan-out signal line 51, the first wiring layer 40 and the first sub-section 21, thereby reducing the risk of cracks in the first insulating layer 30 in this area, blocking the path for water vapor to invade the second wiring layer 50, and preventing water vapor from corroding the fan-out signal line 51 along the cracks in the first insulating layer 30. By providing a notch in the organic layer, the organic layer above the fan-out signal line 51 (diagonal area) is isolated from the external water vapor, and the path for water vapor to invade the fan-out signal line 51 in the area between the first signal line 41 and the second signal line 42 is blocked.

[0081] Furthermore, if Figure 4 As shown, the notch 22 has a diagonal line d, which is parallel to the extension direction of the fan-out signal line 51, and the orthographic projection of the diagonal line d of the notch 22 on the substrate 10 overlaps with the orthographic projection of a fan-out signal line 51 on the substrate 10. Optionally, the fan-out signal line 51 overlapping with the diagonal line d of the notch 22 has the largest distance from the display area AA among all the fan-out signal lines 51. The notch 22 can be prepared by a patterning process, and it can be prepared simultaneously with the first sub-section 21, the dam 23 and the second sub-section 24 by the same patterning process and the same mask, without adding new preparation steps and without affecting production efficiency. For example, the orthographic projection of at least one fan-out signal line 51 on the substrate 10 overlaps with the orthographic projection of the diagonal line d of the notch 22 on the substrate.

[0082] like Figure 6 and Figure 7As shown, the gap 22 includes a first boundary 224 and a second boundary 225 opposite to each other along the first direction X, and the orthographic projections of the first signal line 41 and the second signal line 42 on the substrate are located between the orthographic projections of the first boundary 224 and the second boundary 225 on the substrate 10 .

[0083] For example, the display panel further includes a second insulating layer disposed on a side of the organic layer away from the substrate and covering the first wiring layer. Further, in an embodiment of the present invention, the display panel further includes a second insulating layer 60 disposed on a side of the organic layer 20 away from the first insulating layer 30, the second insulating layer 60 covering the first wiring layer 40, and used for insulating and protecting the signal wiring in the second wiring layer 50. The material of the second insulating layer 60 includes an inorganic material or an organic material.

[0084] Figure 8 is a schematic diagram of a layered structure in the display area AA of the display panel in an embodiment of the present invention. The second wiring layer 50 in the embodiment of the present invention can be Figure 8 At least one of the first metal layer M1 and the second metal layer M2 of the display panel, the first wiring layer 40 may be Figure 8 The fourth metal layer M4 of the display panel, the organic layer can be Figure 8 The flat layer PLN in the display panel.

[0085] Optionally, the display panel further includes a light emitting device layer and an encapsulation layer, the light emitting device layer is located between the substrate and the encapsulation layer, and at least a portion of the film layer of the encapsulation layer is in the same layer as the second insulating layer.

[0086] Optionally, the display panel further includes a pixel circuit and a light emitting device, the pixel circuit is connected to the second signal line 42 , the pixel circuit is connected to the first electrode of the light emitting device, and the second electrode of the light emitting device is connected to the first signal line 41 .

[0087] Specifically, Figure 8As shown in , the display panel further includes part or all of a pixel defining layer 70, a light emitting device layer 80 and an encapsulation layer 90. The pixel defining layer 70 is arranged on the side of the organic layer 20 away from the substrate 10, and the light emitting device layer 80 is located between the substrate 10 and the encapsulation layer 90. At least part of the film layer of the encapsulation layer 90 is in the same layer as the second insulating layer. The pixel defining layer 70 is used to define a plurality of light emitting areas, which enclose a plurality of pixel openings 71. The light emitting device layer 80 is located in the display area AA, and includes a first electrode 81, a light emitting layer 82, and a second electrode 83. At least part of the first electrode 81 is located between the organic layer 20 and the pixel defining layer 70, and at least part of the first electrode 81 is exposed in the corresponding pixel opening 71. The light emitting layer 82 is arranged in the corresponding pixel opening 71 and covers the exposed surface of the first electrode 81 in the corresponding pixel opening 71. The second electrode 83 is arranged on the side of the light-emitting layer 82 away from the substrate 10, and extends from the surface of the light-emitting layer 82 away from the substrate 10 to the side of the pixel defining layer 70 away from the substrate 10, covering the side surface of the pixel defining layer 70 away from the substrate 10. Each light-emitting layer 82 is combined with the corresponding first electrode 81 and the second electrode 83 in the first electrode 81 to form a light-emitting device, which is used to provide a display light source for the display panel. In the display area AA, the encapsulation layer 90 covers the side surface of the light-emitting device layer 80 away from the substrate 10 (that is, covers the surface of the second electrode 83 away from the substrate 10), which is used to encapsulate and protect the light-emitting device in the light-emitting device layer 80 and other display devices in the display panel, and prevent water and oxygen from invading and corroding the light-emitting device and other display devices.

[0088] For example, the encapsulation layer 90 includes a first inorganic encapsulation layer 91, an organic encapsulation layer 92, and a second inorganic encapsulation layer 93 which are sequentially stacked in a direction away from the substrate 10, and at least one of the first inorganic encapsulation layer 91 and the second inorganic encapsulation layer 93 is disposed in the same layer as the second insulating layer 60. Alternatively, the second insulating layer 60 may be a portion of at least one of the first inorganic encapsulation layer 91 and the second inorganic encapsulation layer 93.

[0089] For example, the second insulating layer 60 fills the gap 22. For example, the second insulating layer 60 contacts the first insulating layer 30 at the gap 22 to isolate water vapor and reduce the corrosion of the fan-out signal line at the gap position by external water vapor.

[0090] Furthermore, the display panel also includes a pixel circuit, such as Fig. 9 As shown in , the pixel circuit is connected to the second signal line 42, and the pixel circuit is also connected to the first electrode 81 of the corresponding light-emitting device OLED in the light-emitting device layer 80, and the second electrode 83 in the light-emitting device layer 80 is connected to the first signal line 41. The pixel circuit turns on the corresponding line according to the received display signal, thereby realizing the light emission control of the light-emitting device, and then realizing the switching of the display screen.

[0091] Optionally, the pixel circuit also includes a driving transistor T1 and a first initialization transistor T4, the driving transistor is connected between the second signal line 42 and the first electrode of the light-emitting device, the gate of the first initialization transistor is connected to the first scan line Scan1, the first electrode of the first initialization transistor is connected to the first initialization signal line Vrfe1, and the second electrode of the first initialization transistor is connected to the gate or second electrode of the driving transistor.

[0092] Optionally, the pixel circuit includes a second initialization transistor T7, a gate of the second initialization transistor is connected to the fourth scan line Scan4, a first electrode of the second initialization transistor is connected to the second initialization signal line Vrfe2, and a second electrode of the second initialization transistor is connected to the first electrode of the light-emitting device OLED.

[0093] Optionally, the pixel circuit further includes a data writing transistor T2, a gate of the data writing transistor is connected to the second scan line Scan2, a first electrode of the data writing transistor is connected to the data signal line 52, and a second electrode of the data writing transistor is connected to the first electrode of the driving transistor.

[0094] Optionally, the pixel circuit further includes a storage capacitor Cst, a first electrode of the storage capacitor Cst is connected to the second signal line 42, and a second electrode of the storage capacitor Cst is connected to the gate of the driving transistor.

[0095] Optionally, the pixel circuit further includes a threshold compensation transistor T3, a gate of the threshold compensation transistor is connected to the third scan line Scan3, a first electrode of the threshold compensation transistor is connected to the second electrode of the driving transistor, and a second electrode of the threshold compensation transistor is connected to the gate of the driving transistor.

[0096] Optionally, the pixel circuit further includes a third initialization transistor T8, a gate of the third initialization transistor is connected to the fourth scan line Scan4, a first electrode of the third initialization transistor is connected to the third initialization signal line Vref3, and a second electrode of the third initialization transistor is connected to the first electrode or the second electrode of the driving transistor.

[0097] Optionally, the pixel circuit also includes a first light-emitting control transistor T5 and / or a second light-emitting control transistor T6, the gate of the first light-emitting control transistor is connected to the light-emitting control signal line EM, the first electrode of the first light-emitting control transistor is connected to the second signal line 42, the second electrode of the first light-emitting control transistor is connected to the first electrode of the driving transistor, the gate of the second light-emitting control transistor is connected to the light-emitting control signal line EM, the first electrode of the second light-emitting control transistor is connected to the second electrode of the driving transistor, and the second electrode of the second light-emitting control transistor is connected to the first electrode of the light-emitting device OLED.

[0098] The structures in box B1 and box B2 are the same or similar and will not be described in detail here.

[0099] Example 2

[0100] The difference between Example 2 and Example 1 is that the third sub-section 25 may not be provided in Example 2, and the corresponding structure in Example 2 is the same as or similar to the corresponding structure in Example 1, which will not be described again here.

[0101] like Figure 4 or Figure 7 As shown, the third sub-portion 25 may not be provided in the notch 22. By providing the notch 22, the overlapping areas of the first sub-portion 21 and the first routing layer 40 and the second routing layer 50 are staggered, so that the Taper angle at the edge of the first sub-portion 21 avoids the overlapping area of ​​the signal routing in the first routing layer 40 and the fan-out signal line 51 in the second routing layer 50, thereby dispersing the location where stress is concentrated, thereby reducing the risk of cracks in the first insulating layer 30, blocking the path for water vapor to invade the second routing layer 50, and preventing water vapor from corroding the fan-out signal line 51 along the cracks in the first insulating layer 30.

[0102] In the embodiment of the present invention, compared with the display panel provided in Example 1, the first sub-portion in the overlapping area of ​​at least a part of the first wiring layer and the second wiring layer is removed by setting a notch in the embodiment of the present invention, that is, the third sub-portion 25 is not set, and the first sub-portion and the overlapping area of ​​the first wiring layer and the second wiring layer are staggered, so that the Taper angle of the edge of the first sub-portion avoids the overlapping area of ​​the signal wiring in the first wiring layer and the fan-out signal line in the second wiring layer, thereby dispersing the location of stress concentration, reducing the risk of cracks in the first insulating layer, and blocking the path for water vapor to invade the second wiring layer. Secondly, in the embodiment of the present invention, the first sub-portion in the overlapping area of ​​the first wiring layer and the second wiring layer is removed by the notch, thereby eliminating the channel for water vapor to enter the interior of the display panel through the organic film layer, which can also further improve the reliability of the display panel in blocking water and oxygen and increase the quality of the display panel.

[0103] In an embodiment of the present invention, a display device is also provided, which may be an OLED display device, comprising the display panel as described above. The display device may be any display device with a display function, such as a mobile phone, a laptop computer, a tablet computer, a wearable device, a vehicle-mounted display device, etc.

[0104] In the display panel and display device provided by the embodiments of the present invention, a notch is opened on one side of the first sub-portion in the non-display area to interrupt the stress transmission channel in the first sub-portion, thereby preventing the problem of local stress concentration caused by water vapor invading the first sub-portion, thereby reducing the risk of cracks in the first insulating layer due to stress, blocking the path for water vapor to invade the second wiring layer, achieving effective water vapor isolation, and thus improving the reliability of the display panel and increasing the quality of the display panel.

[0105] By providing a notch 22, the overlapping area between the first sub-portion 21 and the first routing layer 40 and the second routing layer 50 is staggered, so that the Taper corner at the edge of the first sub-portion 21 avoids the overlapping area between the signal routing in the first routing layer 40 and the fan-out signal line 51 in the second routing layer 50, thereby dispersing the location where stress is concentrated, thereby reducing the risk of cracks in the first insulating layer 30, blocking the path for water vapor to invade the second routing layer 50, and preventing water vapor from corroding the fan-out signal line 51 along the cracks in the first insulating layer 30.

[0106] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

[0107] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A display panel, characterized in that: including a display area and a non-display area; The display panel comprises: substrate; An organic layer is disposed on the substrate, and the organic layer comprises: A dam located in the non-display area; The first sub-portion is located at a side of the dam away from the display area, and a notch is provided at a side of the first sub-portion close to the dam; A first wiring layer, provided on a side of the organic layer away from the substrate, comprising a first signal line and a second signal line arranged along a first direction; At least a portion of an orthographic projection of the notch on the substrate is located between orthographic projections of the first signal line and the second signal line on the substrate.

2. The display panel according to claim 1, wherein: Also includes: A second wiring layer is provided between the substrate and the organic layer, Preferably, an orthographic projection of the notch on the substrate at least partially overlaps with an orthographic projection of the second wiring layer on the substrate.

3. The display panel according to claim 2, wherein: The second routing layer includes a plurality of fan-out signal lines arranged along a second direction, the orthographic projection of the notch on the substrate at least partially overlaps with the orthographic projection of the fan-out signal line on the substrate; the first direction intersects with the second direction; Preferably, the gap includes a first boundary and a second boundary opposite to each other along the first direction, and a third boundary connected between the first boundary and the second boundary, and an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the first signal line close to the second signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the second signal line close to the first signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; Preferably, an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the first signal line away from the second signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; an overlapping area of ​​an orthographic projection of the fan-out signal line on the substrate and an orthographic projection of a side of the second signal line away from the first signal line on the substrate is located on a side of the orthographic projection of the third boundary on the substrate close to the display area; Preferably, an extension direction of the first signal line and an extension direction of the fan-out signal line intersect; and / or, an extension direction of the second signal line intersects with an extension direction of the fan-out signal line; Preferably, the orthographic projection of the fan-out signal line on the substrate overlaps with the orthographic projection of the dam on the substrate; Preferably, the extension direction of the fan-out signal line intersects with the first direction, and the extension direction of the fan-out signal line intersects with the second direction; Preferably, the organic layer includes a third sub-portion, the third sub-portion is located between the dam and the first sub-portion, the dam, the third sub-portion and the first sub-portion are arranged at intervals, and at least a part of the third sub-portion is located in the gap; a channel is arranged between the third sub-portion and the first sub-portion; the orthographic projection of the fan-out signal line on the substrate overlaps with the orthographic projection of the third sub-portion on the substrate; Preferably, the extension direction of the fan-out signal line is parallel to the diagonal line of the notch; Preferably, an orthographic projection of at least one of the fan-out signal lines on the substrate overlaps with an orthographic projection of a diagonal line of the notch on the substrate.

4. The display panel according to claim 2, wherein: Also includes: A first insulating layer, provided between the second wiring layer and the organic layer; Preferably, the material of the first insulating layer includes an inorganic material.

5. The display panel according to claim 1, wherein: The organic layer includes a third sub-portion, the third sub-portion is located between the dam and the first sub-portion, the dam, the third sub-portion and the first sub-portion are arranged at intervals, and at least a part of the third sub-portion is located in the gap; a channel is arranged between the third sub-portion and the first sub-portion; Preferably, the channel comprises: A first channel extending along a second direction; a second channel extending along the second direction; a third channel, located at a side of the first channel and the second channel away from the dam, and connecting the first channel and the second channel; Preferably, an orthographic projection of the first channel on the substrate at least partially overlaps with an orthographic projection of the first signal line on the substrate; Preferably, an orthographic projection of the second channel on the substrate at least partially overlaps with an orthographic projection of the second signal line on the substrate.

6. The display panel according to claim 1, wherein: The first routing layer further includes: a third signal line and a fourth signal line arranged along the first direction, wherein the third signal line and the fourth signal line are arranged between the first signal line and the second signal line; Preferably, the line widths of the third signal line and the fourth signal line are smaller than the line widths of the first signal line and the second signal line; Preferably, the third signal line and the fourth signal line extend along a second direction, and the first direction intersects with the second direction; Preferably, the third signal line and the fourth signal line are initial signal lines.

7. The display panel according to claim 1, wherein: Also includes: A second insulating layer, provided on a side of the organic layer away from the substrate and covering the first wiring layer; Preferably, the material of the second insulating layer includes an inorganic material; Preferably, the display panel further comprises a light emitting device layer and an encapsulation layer, the light emitting device layer is located between the substrate and the encapsulation layer, and at least a part of the film layer of the encapsulation layer is in the same layer as the second insulating layer; Preferably, the encapsulation layer comprises a first inorganic encapsulation layer, an organic encapsulation layer and a second inorganic encapsulation layer which are sequentially stacked in a direction away from the substrate, and at least one of the first inorganic encapsulation layer and the second inorganic encapsulation layer is in the same layer as the second insulating layer.

8. The display panel according to claim 1, wherein: The organic layer further comprises: a second sub-portion, disposed on a side of the dam away from the first sub-portion, wherein at least a portion of the second sub-portion is located in the display area; Preferably, the second sub-portion is spaced apart from the dam.

9. The display panel according to claim 1, wherein: One of the first signal line and the second signal line is connected to a high voltage, and the other is connected to a low voltage; And / or, the display panel further includes a pixel circuit and a light emitting device, the pixel circuit is connected to the second signal line, the pixel circuit is connected to the first electrode of the light emitting device, and the second electrode of the light emitting device is connected to the first signal line; And / or, the organic layer is a flat layer; And / or, the organic layer is an insulating layer; and / or, the orthographic projections of the first signal line and the second signal line on the substrate are arranged to intersect with the orthographic projection of the dam on the substrate; And / or, the first signal line and the second signal line extend along a second direction, and the first direction and the second direction intersect; and / or, the dam comprises a first dam and a second dam arranged at intervals, the second dam being located between the first dam and the first sub-portion; and / or, the dam and the first sub-portion are arranged at intervals; And / or, the gap includes a first boundary and a second boundary opposite to each other along the first direction, and the orthographic projections of the first signal line and the second signal line on the substrate are located between the orthographic projections of the first boundary and the second boundary on the substrate; and / or, a portion of the orthographic projection of the dam on the substrate located between the orthographic projections of the first signal line and the second signal line on the substrate extends along the first direction; And / or, the non-display area further includes a bending area, and the gap is located between the display area and the bending area.

10. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-9.

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