Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a display area and a non-display area, and the non-display area at least partially surrounds the display area. The non-display area comprises a substrate, an isolation dike, a first wire and an anti-crack groove, the first wire comprises a first wire structure and a second wire structure which are connected, and the second wire structure is located on the side, away from the display area, of the first wire structure. At least part of the first wiring structure is located on the side, close to the display area, of the isolation dike, and the second wiring structure is located on the side, away from the display area, of the isolation dike. The anti-crack groove is located on one side of the isolation dike away from the display area; in the direction perpendicular to the plane where the display panel is located, at least part of the second wiring structure is overlapped with the first area, and the first area is the area between the anti-crack groove and the isolation dike. By arranging the second wiring structure located on the side, away from the display area, of the isolation dike, the first wiring can extend in the direction away from the display area, and the width, reduced due to the narrow frame design, of the first wiring is compensated.

Description

Technical Field

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

[0002] With the development of panel manufacturing technology, narrow border design has gradually become an essential feature of current display panels. In order to reduce the border area of ​​the display panel, it is usually necessary to compress the size of some traces in the border area. Common design solutions include reducing the width of some traces (such as the power voltage signal line PVEE) in the border area.

[0003] However, when the width of the above-mentioned part of the wiring in the border area is reduced, the resistance corresponding to the part of the wiring is relatively increased, which easily leads to additional power consumption when the part of the wiring transmits electrical signals. Summary of the invention

[0004] In view of this, the present application provides a display panel and a display device to solve the above-mentioned problem of additional power consumption caused by reducing the wiring width.

[0005] In a first aspect, an embodiment of the present application provides a display panel, the display panel includes a display area and a non-display area, and the non-display area at least partially surrounds the display area. The non-display area includes: a substrate, an isolation dam, and a first routing line, the first routing line includes a first routing structure and a second routing structure connected, and the second routing structure is located on a side of the first routing structure away from the display area. At least a part of the first routing structure is located on a side of the isolation dam close to the display area, and the second routing structure is located on a side of the isolation dam away from the display area.

[0006] The display panel also includes an anti-crack groove, which is located on a side of the isolation dam away from the display area; along a direction perpendicular to the plane where the display panel is located, at least part of the second wiring structure overlaps with the first area, and the first area is the area between the anti-crack groove and the isolation dam.

[0007] In a second aspect, an embodiment of the present application provides a display device, comprising the display panel provided in the first aspect.

[0008] The solution provided in the embodiment of the present application can extend the first routing line in a direction away from the display area by setting a second routing structure located on the side of the isolation dam away from the display area, thereby increasing the width of the first routing line, compensating for the width of the first routing line reduced by the narrow frame design, and helping to avoid the corresponding high power consumption when transmitting electrical signals due to the first routing line being too narrow. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0010] Figure 1 is a schematic top view of a partial structure of a display panel related to the present application;

[0011] Figure 2 is a cross-sectional schematic diagram of a partial structure of a display panel related to the present application;

[0012] Figure 3 A schematic top view of a partial structure of a display panel provided in the present application;

[0013] Figure 4 for Figure 3 The cross-sectional view of a part of the structure of the display panel along the AA′ direction is shown.

[0014] Figure 5 for Figure 3 Another cross-sectional schematic diagram of a partial structure of the display panel along AA' is shown;

[0015] Figure 6 A schematic top view of a partial structure of a display panel provided in the present application;

[0016] Figure 7 for Figure 6 A schematic cross-sectional view of a partial structure of a display panel along the BB' line;

[0017] Figure 8 for Figure 3 Another cross-sectional schematic diagram of a partial structure of the display panel along AA' is shown;

[0018] Fig. 9 for Figure 3 Another cross-sectional schematic diagram of a partial structure of the display panel along AA' is shown;

[0019] Fig.10 A schematic top view of a partial structure of a display panel provided in the present application;

[0020] Fig.11 for Fig.10 A schematic cross-sectional view of a partial structure of a display panel along CC' is shown;

[0021] Fig.12 A schematic top view of a partial structure of a display panel provided in the present application;

[0022] Fig.13 for Fig.12 A schematic cross-sectional view of a partial structure of a display panel along DD' is shown;

[0023] Fig.14 A schematic top view of a partial structure of a display panel provided in the present application;

[0024] Fig.15 for Fig.14 A schematic cross-sectional view of a partial structure of a display panel along line EE' is shown;

[0025] Fig.16 A schematic top view of a partial structure of a display panel provided in the present application;

[0026] Fig.17 for Fig.16 A schematic cross-sectional view of a partial structure of a display panel along FF' is shown;

[0027] Fig.18 A schematic top view of a partial structure of a display panel provided in the present application;

[0028] Fig.19 for Fig.18 A schematic cross-sectional view of a partial structure of a display panel along GG' is shown;

[0029] Fig. 20 A schematic top view of a partial structure of a display panel provided in the present application;

[0030] Fig.21 for Fig. 20 A schematic cross-sectional view of a partial structure of a display panel along line HH' is shown;

[0031] Fig. 22 for Fig. 20 A schematic projection diagram of a partial structure of a display panel shown;

[0032] Fig.23 A schematic top view of a partial structure of a display panel provided in the present application;

[0033] Fig.24 for Fig.23 Another cross-sectional schematic diagram of a partial structure of the display panel along JJ';

[0034] Fig.25 A schematic top view of a partial structure of a display panel provided in the present application;

[0035] Fig.26 for Fig.25 A schematic cross-sectional view of a partial structure of a display panel along the KK' direction is shown;

[0036] Fig. 27A schematic top view of a partial structure of a display panel provided in the present application;

[0037] Fig.28 for Fig. 27 A schematic cross-sectional view of a partial structure of a display panel along the LL' direction is shown;

[0038] Fig.29 A schematic diagram of a display device provided in the present application. DETAILED DESCRIPTION

[0039] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0040] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0042] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] Figure 1 is a schematic top view of a partial structure of a display panel related to the present application, Figure 2 Schematic diagram of a cross-sectional view of a partial structure of a display panel related to the present application. Figure 1 The figure shows the size changes of some structures in the display panel when implementing a narrow frame design; Figure 2 The figure shows the size changes of some film layers in the display panel when implementing a narrow bezel design.

[0044] With the continuous development of display technology, larger display area and narrow borders have gradually become the current mainstream display requirements. In order to increase the display panel, it is usually possible to optimize the arrangement of some devices and side wiring in the border area to reduce the area of ​​the border area. Common design solutions include reducing the width of some side wiring in the border area, thereby reducing the area of ​​the border area. For example, Figure 1As shown, in the process of reducing the setting area of ​​the border area 001, the power supply voltage signal line 01a (which can be PVEE or PVDD) located in the border area 001 can be compressed in the direction away from the display area 002, so that its width in the direction perpendicular to its extension direction is reduced from W1 to W2. At this time, the width of the border area 001 can be reduced from W3 to W4, thereby achieving the purpose of reducing the area of ​​the border area 001 and increasing the area of ​​the display area 002.

[0045] It should be noted that if Figure 2 As shown, in the prior art, along the direction perpendicular to the plane where the display panel is located, the edge of the power supply voltage signal line 01a away from the display area 002 usually overlaps with the isolation bank 22. In addition, in the process of compressing the width of the power supply voltage signal line 01a, the position of the edge of the power supply voltage signal line 01a away from the display area 002 is often selected to be fixed, and the width of the power supply voltage signal line 01a is compressed in the direction from the display area 002 to the frame area 001. At this time, the width of the power supply voltage signal line 01a is reduced from W1 to W2, and the width of the display area 002 is significantly increased.

[0046] However, based on the resistance formula R=ρ*L / S, since reducing the width of the side routing can usually be regarded as reducing the cross-sectional area S of the routing, when the routing resistivity ρ and the extension length L remain unchanged, the solution of reducing the width of the side routing will usually cause the resistance R of the routing to increase, which in turn leads to an increase in the additional power consumption generated when the corresponding electrical signal is transmitted through the routing. In particular, for a side routing structure including a portion disposed in multiple film layers, after reducing the width of the routing structure and reducing the number of film layers distributed in the routing, the resistance of the routing structure increases to a greater extent, and the additional power consumption generated is greater (the reason is that: the portions of the routing structure disposed in different layers are interconnected to form a parallel structure, and the total resistance is relatively small at this time. If the number of film layers distributed in the routing is reduced, the effect of reducing the total resistance brought about by the parallel connection is weakened, and the total resistance increases; if the width of the routing structure is reduced at the same time, the degree of increase in the total resistance is further increased).

[0047] In addition, if Figure 2As shown, the power supply voltage signal line 01a shown in the figure may include two parts arranged in different layers and electrically connected, and the two parts may be regarded as being electrically connected in parallel. The display panel may also include a second wiring 01b, a first electrode 011, a support portion 012, a light shielding portion 013, a first film layer 014, a first flat layer 015, an edge portion 016, and a second flat layer 017. The second routing line 01b can be located in the display area 002, and the second routing line 01b can be other routing lines arranged in the same film layer as the power supply voltage signal line 01a; the first electrode 011 can be an anode of the light-emitting device; the supporting portion 012 can be a spacer structure (Photo Spacer); the shading portion 013 can be used to shield the isolation dam 22 and other structures thereunder; the first film layer 014 can be a film layer between the power supply voltage signal line 01a and the substrate 21, and the anti-crack groove 014a can be used to reduce the risk of cracks on the side of the first film layer 014 away from the display area 002 caused by cutting the display panel; the first flat layer 015 and the second flat layer 017 can both be flattening film layers, and the edging portion 016 can cover part of the edge of the power supply voltage signal line 01a away from the display area 002.

[0048] Figure 3 A schematic top view of a partial structure of a display panel provided in the present application. Figure 4 for Figure 3 The cross-sectional view of a portion of the structure of the display panel shown in FIG. 1 along the AA' direction is provided for ease of understanding. Figure 4 Indicated Figure 3 The cross-section of the part of the structure located in the area marked by the dotted line, Figure 4 The different filling patterns corresponding to the partial structures shown in FIG. 1 are only used to distinguish the different structures included in the partial structures.

[0049] In view of the above problems, combined with Figure 3 and Figure 4 The present application provides a display panel 10 , which includes a display area 01 and a non-display area 02 , wherein the non-display area 02 at least partially surrounds the display area 01 .

[0050] The display area 01 may include a light-emitting device, which may be an organic light-emitting diode (OLED).

[0051] The display panel 10 further includes a substrate 21 and an isolation dam 22, and the isolation dam 22 is located on one side of the substrate 21. The isolation dam 22 may be located in the non-display area 02, and the isolation dam 22 may include a retaining wall portion 22a. Since the light-emitting device is located in the display area 01 and the light-emitting material in the light-emitting device may have fluidity, in order to prevent the light-emitting material from moving from the display area 01 to the non-display area 02, the retaining wall portion 22a may be used to limit the area where the light-emitting material is located to prevent abnormal display.

[0052] The display panel 10 further includes a first wiring 23, and the film layer where the first wiring 23 is located can be located between the retaining wall portion 22a and the substrate 21. The first wiring 23 can be a power voltage line (can be PVEE or PVDD), which is used to transmit the power voltage signal required for light emission to the light emitting device in the display panel 10.

[0053] The first wiring 23 includes a first wiring structure 231 and a second wiring structure 232 connected to each other. The second wiring structure 232 is located on a side of the first wiring structure 231 away from the display area 01. At least a portion of the first wiring structure 231 is located on a side of the isolation dam 22 close to the display area 01, and the second wiring structure 232 is located on a side of the isolation dam 22 away from the display area 01. Figure 4 As shown, along a direction perpendicular to the plane where the display panel 10 is located, a portion of the first wiring structure 231 may overlap with the isolation dam 22 .

[0054] The display panel 10 may further include an anti-crack groove 24, which is located on a side of the isolation dam 22 away from the display area 01. In a direction perpendicular to the plane where the display panel 10 is located, at least a portion of the second wiring structure 232 overlaps with the first area S1, and the first area S1 is an area between the anti-crack groove 24 and the isolation dam 22.

[0055] Since the second wiring structure 232 may be located on a side of the first wiring structure 231 away from the display area 01, the portion of the second wiring structure 232 located in the first area S1 may be regarded as a portion of the first wiring 23 extended in a direction away from the display area 01. The extended portion may extend to a side of the anti-crack groove 24 close to the display area 01, that is, along a direction perpendicular to the plane where the display panel 10 is located, the orthographic projection of one end of the second wiring structure 232 away from the display area 01 on the substrate 21 may be tangent to the orthographic projection of the anti-crack groove 24 on the substrate 21.

[0056] In the embodiment of the present application, by providing a second routing structure 232 located on the side of the isolation dam 22 away from the display area 01, the first routing 23 can be extended in a direction away from the display area 01, thereby increasing the width of the first routing 23, compensating for the width of the first routing 23 reduced by the narrow frame design, and helping to avoid the first routing 23 being too narrow, resulting in a large corresponding power consumption when transmitting electrical signals.

[0057] Figure 5 for Figure 3 Another cross-sectional schematic diagram of a partial structure of a display panel along AA′ is shown.

[0058] In one embodiment of the present application, Figure 5 As shown, the film layer where the first wiring structure 231 is located includes M conductive film layers arranged in a direction perpendicular to the plane where the display panel 10 is located, and the film layer where the second wiring structure 232 is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel 10 is located, 1≤N≤M, and N and M are both positive integers.

[0059] Compared with the first wiring structure 231, the second wiring structure 232 includes a smaller number of conductive film layers arranged in a direction perpendicular to the plane where the display panel 10 is located. It can be understood that the portion of the first wiring 23 extending in a direction away from the display area 01 includes fewer film layers. The arrangement of this embodiment can extend only a portion of the conductive film layers included in the first wiring 23 under the condition of extending the width of the first wiring 23 to prevent the corresponding resistance from increasing, thereby reducing the number of conductive film layers that need to be extended as much as possible and reducing the manufacturing cost.

[0060] Figure 6 A schematic top view of a partial structure of a display panel provided in the present application. Figure 7 for Figure 6 The cross-sectional view along the BB' line of the partial structure of the display panel is shown.

[0061] In one embodiment of the present application, Figure 6 and Figure 7 The display panel 10 includes a first conductive film layer 110 and a second conductive film layer 120, wherein the second conductive film layer 120 is located on a side of the first conductive film layer 110 close to the substrate 21. The first wiring structure 231 includes a first portion 231a located on the first conductive film layer 110 and a second portion 231b located on the second conductive film layer 120, and the first portion 231a and the second portion 231b are electrically connected.

[0062] It should be noted that the film layer where some signal lines (such as power voltage lines PVDD, data signal lines, etc.) in the display panel 10 are located may also include the first conductive film layer 110 and / or the second conductive film layer 120 , and these signal lines may be located in the display area 01 .

[0063] In addition, if Figure 7 As shown, the display panel 10 may further include a first electrode 011, a support portion 012, a light shielding portion 013, a first film layer 014, a first flat layer 015, an edge portion 016, and a second flat layer 017. The first electrode 011 may be an anode of a light-emitting device; the support portion 012 may be a spacer structure (Photo Spacer); the light shielding portion 013 may be used to shield structures such as the isolation dam 22 thereunder; the first film layer 014 may be a metal film layer where some signal lines in the display panel 10 are located; the first flat layer 015, the edge portion 016, and the second flat layer 017 may all be flattened film layers, and the edge portion 016 may be a part of the isolation dam 22.

[0064] In one embodiment of the present application, Figure 5 As shown, the second wiring structure 232 includes a first substructure 2321 , and the film layer where the first substructure 2321 is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel 10 is located, N<M.

[0065] Combination Figure 6 and Figure 7 , the first substructure 2321 includes the third portion 232a located in the first conductive film layer 110 and does not include the portion located in the second conductive film layer 120. Since the first wiring structure 231 may include the first portion 231a located in the first conductive film layer 110, the solution of this embodiment can be understood as extending only the portion of the first wiring 23 located in the first conductive film layer 110 in a direction away from the display area 01, so as to extend the width of the first wiring 23 and help reduce the manufacturing cost.

[0066] Figure 8 for Figure 3 Another cross-sectional schematic diagram of a partial structure of a display panel along AA′ is shown.

[0067] In one embodiment of the present application, Figure 8 As shown, the second wiring structure 232 further includes a second substructure 2322 , and the film layer where the second substructure 2322 is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel 10 is located, where N=M.

[0068] The conductive film layer where the second substructure 2322 is located is the same as the conductive film layer where the first wiring structure 231 is located.

[0069] In the embodiment of the present application, in addition to the portion distributed in N conductive film layers (the first substructure 2321), the second wiring structure 232 may also include a portion distributed in M ​​conductive film layers (the second substructure 2322), wherein the first substructure 2321 may be located on a side of the second substructure 2322 away from the display area 01. Since the conductive film layer included in the second substructure 2322 is the same as the conductive film layer included in the first wiring structure 231, the second substructure 22 distributed in N conductive film layers may be regarded as an extension of the first wiring structure 231 distributed in M ​​conductive film layers extended in a direction away from the display area 01.

[0070] Fig. 9 for Figure 3 Another cross-sectional schematic diagram of a partial structure of a display panel along AA′ is shown.

[0071] In one possible implementation, Fig. 9 As shown, the first routing structure 231 includes a first part 231a located in the first conductive film layer 110 and a second part 231b located in the second conductive film layer 120; the second routing structure 232 includes a first substructure 2321 and a second substructure 2322, the first substructure 2321 includes a third part 232a located in the first conductive film layer 110 and does not include a part located in the second conductive film layer 120, and the second substructure 2322 includes a fourth part 232b located in the first conductive film layer 110 and a fifth part 232c located in the second conductive film layer 120.

[0072] Fig.10 A schematic top view of a partial structure of a display panel provided in the present application. Fig.11 for Fig.10 The cross-sectional view of a partial structure of the display panel along CC' is shown.

[0073] In one possible implementation, combining Fig.10 and Fig.11 The second wiring structure 232 includes a sixth portion 232e located in the first conductive film layer 110 and a seventh portion 232f located in the second conductive film layer 120. Along a direction perpendicular to the plane where the display panel 10 is located, the sixth portion 232e overlaps with at least a portion of the first area S1, and the seventh portion 232f overlaps with at least a portion of the first area S1.

[0074] Fig.12 A schematic top view of a partial structure of a display panel provided in the present application. Fig.13 for Fig.12 The cross-sectional view of a partial structure of the display panel along line DD' is shown.

[0075] In one embodiment of the present application, Fig.12 and Fig.13 The isolation dam 22 includes a first encapsulating structure 22b, and the first encapsulating structure 22b encapsulates at least a portion of the first wiring edge 230, and the first wiring edge 230 is an edge of the second portion 231b away from the display area 01. In a direction perpendicular to the plane where the display panel 10 is located, the first wiring edge 230 may overlap with the first encapsulating structure 22b, and the first encapsulating structure 22b encapsulating at least a portion of the first wiring edge 230 may represent that the first encapsulating structure 22b covers at least a portion of the first wiring edge 230.

[0076] Among them, the function of the first coating structure 22b may include protecting the edge of the wiring it covers and preventing the wiring edge from being damaged due to over-etching. The over-etching phenomenon may refer to: when the film layer (e.g., the first conductive film layer 110) above the first wiring edge 230 is patterned by an etching process, due to limited process accuracy, excessive etching may cause damage to the first wiring edge 230 below. It should be noted that the working principle of the first coating structure 25 includes: when the film layer (e.g., the first conductive film layer 110) above the first wiring edge 230 is over-etched, since part of the first coating structure 25 may be located on the side of the first wiring edge 230 away from the substrate 21, the first coating structure 22b may replace the first wiring edge 230 to withstand the damage caused by the above-mentioned over-etching, so as to avoid damage to the first wiring edge 230.

[0077] Fig.14 A schematic top view of a partial structure of a display panel provided in the present application. Fig.15 for Fig.14 The cross-sectional view of a partial structure of the display panel along line EE' is shown.

[0078] In one embodiment of the present application, the constituent material of the first encapsulation structure 22b includes an insulating material, wherein the insulating material may be an organic material. Fig.14 and Fig.15 The first encapsulation structure 22 b is located on a side of the first conductive film layer 110 close to the substrate 21 .

[0079] The display panel 10 further includes a first opening portion 41 penetrating the first conductive film layer 110 . The first encapsulation structure 22 b overlaps the first opening portion 41 along a direction perpendicular to the plane where the display panel 10 is located.

[0080] When a structure containing insulating materials is prepared in the display panel 10, based on the characteristics of the preparation process, gas is easily generated during the preparation process, thereby affecting the structural stability of other film layers (for example, causing bulging of the film layer). To solve this problem, it is usually necessary to set an exhaust port for exhausting gas above the structure containing organic materials. Since the first conductive film layer 110 can be located on the side of the first coating structure 22b away from the substrate 21, the first opening portion 41 that passes through the first conductive film layer 110 can be used as the above-mentioned exhaust port to exhaust the gas generated by the preparation of the first coating structure 22b. In addition, the arrangement of the first opening portion 41 overlapping the first coating structure 22b can achieve a smaller interval between the first opening portion 41 and the first coating structure 22b, which is convenient for the gas generated when preparing the first coating structure 22b to be discharged from the first opening portion 41.

[0081] Fig.16 A schematic top view of a partial structure of a display panel provided in the present application. Fig.17 for Fig.16 The cross-sectional view of a partial structure of the display panel along FF' is shown. It should be noted that the filling pattern corresponding to the alignment mark shown in the figure is inconsistent with the filling pattern corresponding to the first film layer in order to distinguish the alignment mark from other structures on the first film layer.

[0082] In one embodiment of the present application, Fig.16 and Fig.17 The non-display area 02 further includes an alignment mark 310, which is located on the side of the isolation bank 22 away from the display area 01. The alignment mark 310 can be used for alignment calibration. For example, when the display panel 10 and the flexible printed circuit (FPC) need to be aligned and bonded, the alignment mark 310 can be selected as a reference to improve the success rate of alignment and bonding.

[0083] In a direction perpendicular to the plane of the display panel 10, the film layer where the alignment mark 310 is located is located between the film layer where the first wiring 23 is located and the substrate 21. The alignment mark 310 can be located on the first film layer 100, and the first film layer 100 can be located between the film layer where the first wiring 23 is located and the substrate 21.

[0084] When the alignment mark 310 is used for alignment calibration, the position of the alignment mark 310 can be obtained by relying on optical recognition, which means that a path for the recognition light to pass through needs to be reserved above the alignment mark 310 .

[0085] The second wiring structure 232 includes a second opening portion 42, and the second opening portion 42 overlaps the alignment mark 310 along a direction perpendicular to the plane where the display panel 10 is located.

[0086] In the embodiment of the present application, since the film layer where the second routing structure 232 is located is located on the side of the film layer where the alignment mark 310 is located away from the substrate 21, the second opening portion 42 can serve as an opening for identification light (used to irradiate the alignment mark 310 to identify the alignment mark 310) to pass through, thereby ensuring that the alignment mark 310 can play a role in alignment calibration.

[0087] In a possible implementation of this embodiment, the film structure filled in the second opening 42 has a higher light transmittance than the film structure constituting the side wall of the second opening 42. In this implementation, by filling the second opening 42 with a film structure having a higher light transmittance, it is helpful to reduce the difficulty of identifying the alignment mark 310.

[0088] Fig.18 A schematic top view of a partial structure of a display panel provided in the present application. Fig.19 for Fig.18 The cross-sectional diagram of a partial structure of the display panel along GG' is shown. It should be noted that the filling pattern corresponding to the alignment mark shown in the figure is inconsistent with the filling pattern corresponding to the first film layer in order to distinguish the alignment mark from other structures on the first film layer.

[0089] In a possible implementation of this embodiment, combined with Fig.18 and Fig.19 The second opening portion 42 may be a notch located at a side of the third portion 232a of the second wiring structure 232 away from the display area 01, and the alignment mark 310 overlaps with the notch along a direction perpendicular to the plane where the display panel 10 is located.

[0090] In one embodiment of the present application, Fig.16 and Fig.17 The display panel 10 includes a first conductive film layer 110 and a second conductive film layer 120 . The second conductive film layer 120 is located on a side of the first conductive film layer 110 close to the substrate 21 .

[0091] The second wiring structure 232 at least includes a first substructure 2321 , and the first substructure 2321 includes a second opening portion 42 .

[0092] The first wiring structure 231 includes a first portion 231a located in the first conductive film layer 110 and a second portion 231b located in the second conductive film layer 120 . The first substructure 2321 includes a third portion 232a located in the first conductive film layer 110 and does not include a portion located in the second conductive film layer 120 .

[0093] Among them, the end of the second part 231b away from the display area 01 can be located on the side of the alignment mark 310 close to the display area 01, that is, along the direction perpendicular to the plane where the display panel 10 is located, the part of the first wiring 23 located on the second conductive film layer 120 and the second opening portion 42 may not overlap. At this time, considering that the film layer where the alignment mark 310 is located can be located on the side of the film layer where the first wiring 23 is located close to the substrate 21, the above-mentioned second opening portion 42 can be set only on the third part 232a located on the first conductive film layer 110. In this embodiment, since the first substructure 2321 can be a single film layer structure, the solution of setting the above-mentioned second opening portion 42 on the third part 232a helps to reduce the number of film layers that need to be set with openings and reduce the complexity of the process.

[0094] Fig. 20 A schematic top view of a partial structure of a display panel provided in the present application. Fig.21 for Fig. 20 The cross-sectional view of a partial structure of the display panel along line HH' is shown.

[0095] In one embodiment of the present application, Fig. 20 and Fig.21 , the non-display area 02 further includes a first crack detection line L1 and a second crack detection line L2, and the first crack detection line L1 and the second crack detection line L2 are electrically connected through the transfer structure L0. The first crack detection line L1 and the second crack detection line L2 can both be located in the third conductive film layer 130, and the third conductive film layer 130 can be located between the film layer where the first wiring 23 is located and the substrate 21. Among them, the first crack detection line L1 and the second crack detection line L2 can both be arranged on the third conductive film layer 130 in the non-display area 02, and part of the circuit structure in the display panel 10 (for example, the source and drain of the transistor included in the light-emitting circuit for driving the light-emitting device) can be arranged on the third conductive film layer 130 in the display area 02.

[0096] The first crack detection line L1 and the second crack detection line L2 together constitute a crack detection loop, which can be used to detect whether crack damage occurs on the display panel 10 and determine the location of the crack damage when crack damage occurs on the display panel 10. In addition, the above crack detection loop can at least partially surround the display area 01, which means that the lengths of the lines corresponding to the first crack detection line L1 and the second crack detection line L2 can be longer; generally, the longer the line, the easier it is for static charge to accumulate on the line, so it is easier for static charge to accumulate on the first crack detection line L1 and the second crack detection line L2, and it is easier to cause electrostatic breakdown between the structure of other film layers.

[0097] The transfer structure L0 and the first crack detection line L1 are arranged in different layers, and the transfer structure L0 and the second crack detection line L2 are arranged in different layers. The first crack detection line L1 and the second crack detection line L2 can be electrically connected to the connection structure L0 through vias. It should be noted that the static charges accumulated on the first crack detection line L1 and the second crack detection line L2 can be transferred to other film layers by the connection structure L0 arranged in different layers, thereby reducing the probability of the above-mentioned electrostatic breakdown phenomenon.

[0098] Fig. 22 for Fig. 20 The projection diagram of the partial structure of the display panel shown is for easy understanding. Fig. 22 Only the orthographic projection of the transfer structure on the substrate and the orthographic projection of the second cladding structure on the substrate are shown, and Fig. 22 The purpose of using different filling patterns is to distinguish the orthographic projections corresponding to the transfer structure and the second covering structure.

[0099] Combination Fig. 20 , Fig.21 and Fig. 22 The display panel 10 further includes a second cladding structure 25, which is located on a side of the transfer structure L0 away from the substrate 21. The orthographic projection M1 of the transfer structure L0 on the substrate 21 is located within the range of the orthographic projection M2 of the second cladding structure 25 on the substrate 21, that is, the orthographic projection M2 of the second cladding structure 25 on the substrate 21 can cover at least part of the orthographic projection M1 of the transfer structure L0 on the substrate 21.

[0100] In the embodiment of the present application, the second encapsulation structure 25 may protect the encapsulated transfer structure L0, preventing the transfer structure L0 from being damaged due to excessive etching of the film layer above the transfer structure L0, thereby avoiding affecting the circuit integrity of the above-mentioned crack detection circuit. In this embodiment, by setting the orthographic projection M1 to be within the range of the orthographic projection M2, it is helpful to achieve that the second encapsulation structure 25 completely covers the transfer structure L0, reducing the risk of damaging the transfer structure L0 due to excessive etching.

[0101] In one possible implementation, combining Fig. 20 and Fig.21 The film layer where the transfer structure L0 is located may be located between the film layer where the first wiring 23 is located and the third conductive film layer 130 .

[0102] Fig.23 A schematic top view of a partial structure of a display panel provided in the present application. Fig.24 for Fig.23 Another cross-sectional schematic diagram of a partial structure of the display panel along line JJ' is shown.

[0103] In one embodiment of the present application, Fig.23 and Fig.24 The display panel 10 includes a first conductive film layer 110 and a second conductive film layer 120 . The second conductive film layer 120 is located on a side of the first conductive film layer 110 close to the substrate 21 .

[0104] The transfer structure L0 is located in the second conductive film layer 120 .

[0105] In the embodiment of the present application, since the transfer structure L0 can be provided on the second conductive film layer 120, the static charge accumulated in the above crack detection circuit can be transferred to the second conductive film layer 120 through the transfer structure L0. This arrangement can reduce the charge amount of the static charge distributed on the third conductive film layer 120, reduce the charge amount difference between the static charge distributed on the third conductive film layer 120 and the static charge distributed on the second conductive film layer 120, and avoid the electrostatic breakdown phenomenon caused by the excessive difference in the above charge amount.

[0106] In one possible implementation, Fig.24 As shown, the second cladding structure 25 may be located between the first conductive film layer 110 and the second conductive film layer 120 .

[0107] Fig.25 A schematic top view of a partial structure of a display panel provided in the present application. Fig.26 for Fig.25 The cross-sectional view of a partial structure of the display panel along the KK' direction is shown.

[0108] In one embodiment of the present application, Fig.25 and Fig.26 The second wiring structure 232 includes a first substructure 2321 . The first substructure 2321 includes a third portion 232 a located in the first conductive film layer 110 and does not include a portion located in the second conductive film layer 120 .

[0109] The second cladding structure 25 is located in the first conductive film layer 110. When the film layer located on the side of the first conductive film layer 110 away from the substrate 21 is patterned and over-etching occurs, the second cladding structure 25 can replace the transfer structure L0 to withstand the damage caused by the over-etching. Since the second cladding structure 25 is located in the first conductive film layer 110, the constituent material of the second cladding structure 25 and the constituent material of the third part 232a can be the same, that is, the transmission efficiency of the second cladding structure 25 for electrical signals can be the same as the transmission efficiency of the third part 232a for electrical signals.

[0110] In order to prevent the electrical signal transmitted on the third portion 232 a from being transmitted to the transfer structure L0 through the second covering structure 25 , it is necessary to provide electrical insulation between the second covering structure 25 and the third portion 232 a .

[0111] Combination Fig.25 and Fig.26 The display panel 10 further includes a third opening portion 43 , and the third opening portion 43 penetrates the first conductive film layer 110 . The third opening portion 43 surrounds the second cladding structure 25 , and the first substructure 2321 surrounds the third opening portion 43 .

[0112] In the embodiment of the present application, since the third opening portion 43 passes through the first conductive film layer 110 and is located between the third part 232a and the second covering structure 25, the third opening portion 43 can isolate the second covering structure 25 and the third part 232a, thereby preventing the electrical signal transmitted on the third part 232a from being transmitted to the transfer structure L0 through the second covering structure 25, thereby preventing interference with the working state of the above-mentioned crack detection circuit.

[0113] Fig. 27 A schematic top view of a partial structure of a display panel provided in the present application. Fig.28 for Fig. 27 The cross-sectional view of a part of the structure of the display panel along the LL' direction is shown.

[0114] In one embodiment of the present application, Fig. 27 and Fig.28 The second wiring structure 232 includes a first substructure 2321 . The first substructure 2321 includes a third portion 232 a located in the first conductive film layer 110 and does not include a portion located in the second conductive film layer 120 .

[0115] The isolation dam 22 further includes a first encapsulating structure 22 b , which encapsulates at least a portion of a first wiring edge 230 . The first wiring edge 230 is an edge of a portion of the first wiring 23 located in the second conductive film layer 120 away from the display area 01 .

[0116] The constituent materials of the first cladding structure 22 b and the constituent materials of the second cladding structure 25 both include insulating materials, and the first cladding structure 22 b and the second cladding structure 25 are both located on a side of the first conductive film layer 110 close to the substrate 21 .

[0117] The display panel 10 further includes a first opening 41 penetrating the first conductive film layer 110 . Along a direction perpendicular to the plane where the display panel 10 is located, the first opening 41 overlaps the first cladding structure 22 b and the first opening 41 overlaps the second cladding structure 25 .

[0118] Since the first conductive film layer 110 can be located on the side of the first coating structure 22b away from the substrate 21 and the side of the second coating structure 25 away from the substrate, the first opening portion 41 penetrating the first conductive film layer 110 can be used as an exhaust port for exhausting the gas generated by preparing the first coating structure 22b and the second coating structure 25. In addition, the arrangement in which the first opening portion 41 overlaps with both the first coating structure 22b and the second coating structure 25 can achieve a small interval between the first opening portion 41 and the first coating structure 22b and the interval between the first opening portion 41 and the second coating structure 25, which facilitates the exhaust of the gas generated when preparing the first coating structure 22b and the second coating structure 25 from the first opening portion 41, thereby reducing the risk of bulging and the like.

[0119] In one embodiment of the present application, Fig. 27 and Fig.28 , the first encapsulation structure 22b and the second encapsulation structure 25 are an integrated structure. In the embodiment of the present application, the first encapsulation structure 22b and the second encapsulation structure 25 are set as an integrated structure, so that the first encapsulation structure 22b and the second encapsulation structure 25 can be prepared in the same preparation step. Compared with separately setting the above two encapsulation structures, this solution helps to reduce the preparation steps of the display panel 10 and reduce the process complexity.

[0120] In one embodiment of the present application, the first wiring 23 is used to transmit a power supply voltage signal.

[0121] Fig.29 A schematic diagram of a display device provided in the present application.

[0122] The present application provides a display device 20, such as Fig.29 As shown, the display device 20 includes the display panel 10 provided in the above embodiment. The display device 20 may be a mobile phone, or may be an electronic device such as a computer or a television.

[0123] The situation in which the power consumption of some wirings included in the display device 20 provided in the present application is increased due to the narrow frame design is greatly improved.

[0124] In this specification, the same or similar parts between the various embodiments can be referred to each other. In particular, for the device embodiment and the terminal embodiment, since they are basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description in the method embodiment.

Claims

1. A display panel, characterized in that: The device comprises a display area and a non-display area, wherein the non-display area at least partially surrounds the display area; the non-display area comprises: substrate; Isolation dike; a first routing line, the first routing line comprising a first routing structure and a second routing structure connected to each other, the second routing structure being located on a side of the first routing structure away from the display area; at least a portion of the first routing structure being located on a side of the isolation dam close to the display area, the second routing structure being located on a side of the isolation dam away from the display area; An anti-crack groove, the anti-crack groove is located on a side of the isolation dam away from the display area; along a direction perpendicular to the plane where the display panel is located, at least part of the second wiring structure overlaps with the first area, and the first area is the area between the anti-crack groove and the isolation dam.

2. The display panel according to claim 1, characterized in that: The film layer where the first wiring structure is located includes M conductive film layers arranged in a direction perpendicular to the plane where the display panel is located, and the film layer where the second wiring structure is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel is located, 1≤N≤M, N and M are both positive integers.

3. The display panel according to claim 2, characterized in that: The display panel includes a first conductive film layer and a second conductive film layer, wherein the second conductive film layer is located on a side of the first conductive film layer close to the substrate; the first wiring structure includes a first part located in the first conductive film layer and a second part located in the second conductive film layer, and the first part and the second part are electrically connected.

4. The display panel according to claim 3, characterized in that: The second wiring structure includes a first substructure, and the film layer where the first substructure is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel is located, N<M; The first substructure includes a third portion located in the first conductive film layer and does not include a portion located in the second conductive film layer.

5. The display panel according to claim 3, characterized in that: The second wiring structure includes a second substructure, and the film layer where the second substructure is located includes N conductive film layers arranged in a direction perpendicular to the plane where the display panel is located, where N=M; The conductive film layer where the second substructure is located is the same as the conductive film layer where the first wiring structure is located.

6. The display panel according to claim 3, characterized in that: The isolation dam includes a first encapsulating structure, wherein the first encapsulating structure encapsulates at least a portion of a first wiring edge, and the first wiring edge is an edge of the second portion away from the display area.

7. The display panel according to claim 6, characterized in that: The constituent material of the first cladding structure includes an insulating material; the first cladding structure is located on a side of the first conductive film layer close to the substrate; The display panel further includes a first opening portion penetrating through the first conductive film layer, and the first cladding structure overlaps the first opening portion along a direction perpendicular to a plane where the display panel is located.

8. The display panel according to claim 1, characterized in that: The non-display area further includes an alignment mark, which is located on a side of the isolation dam away from the display area; along a direction perpendicular to the plane where the display panel is located, the film layer where the alignment mark is located is located between the film layer where the first wiring is located and the substrate; Wherein, the second wiring structure includes a second opening portion; along a direction perpendicular to the plane where the display panel is located, the second opening portion overlaps with the alignment mark.

9. The display panel according to claim 8, characterized in that: The display panel comprises a first conductive film layer and a second conductive film layer, wherein the second conductive film layer is located on a side of the first conductive film layer close to the substrate; The second wiring structure includes at least a first substructure, and the first substructure includes the second opening; The first routing structure includes a first portion located in the first conductive film layer and a second portion located in the second conductive film layer, and the first substructure includes a third portion located in the first conductive film layer and does not include a portion located in the second conductive film layer.

10. The display panel according to claim 1, characterized in that: The non-display area further includes a first crack detection line and a second crack detection line, the first crack detection line and the second crack detection line are electrically connected via a switching structure, the switching structure and the first crack detection line are arranged in a different layer, and the switching structure and the second crack detection line are arranged in a different layer; The display panel further includes a second encapsulating structure, which is located on a side of the transfer structure away from the substrate; the orthographic projection of the transfer structure on the substrate is within the orthographic projection range of the second encapsulating structure on the substrate.

11. The display panel according to claim 10, characterized in that: The display panel comprises a first conductive film layer and a second conductive film layer, wherein the second conductive film layer is located on a side of the first conductive film layer close to the substrate; The transfer structure is located in the second conductive film layer.

12. The display panel according to claim 11, characterized in that: The second wiring structure includes a first substructure, the first substructure includes a third portion located in the first conductive film layer and does not include a portion located in the second conductive film layer; the second cladding structure is located in the first conductive film layer; The display panel further includes a third opening portion, and the third opening portion penetrates the first conductive film layer; The third opening portion surrounds the second covering structure, and the first substructure surrounds the third opening portion.

13. The display panel according to claim 11, characterized in that: The second wiring structure includes a first substructure, the first substructure includes a third portion located in the first conductive film layer and does not include a portion located in the second conductive film layer; The isolation dam further includes a first encapsulating structure, wherein the first encapsulating structure encapsulates at least a portion of an edge of a first wiring, wherein the first wiring edge is an edge of a portion of the first wiring located in the second conductive film layer away from the display area; The constituent materials of the first cladding structure and the constituent materials of the second cladding structure both include insulating materials, and the first cladding structure and the second cladding structure are both located on a side of the first conductive film layer close to the substrate; The display panel further includes a first opening portion penetrating the first conductive film layer, and along a direction perpendicular to a plane where the display panel is located, the first opening portion overlaps with the first cladding structure and the first opening portion overlaps with the second cladding structure.

14. The display panel according to claim 13, characterized in that: The first covering structure and the second covering structure are an integrated structure.

15. The display panel according to claim 1, characterized in that: The first wiring is used to transmit a power supply voltage signal.

16. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-15.

Images