Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel comprises a substrate and a first metal layer located on one side of the substrate, and the first metal layer comprises a first metal part and a second metal part which are connected with each other; the first metal part comprises a plurality of first exhaust holes, the second metal part comprises a plurality of second exhaust holes, and the arrangement mode of the plurality of first exhaust holes is different from the arrangement mode of the plurality of second exhaust holes. According to the invention, the voltage drop of transmission signals of the first metal layer can be reduced, the display uniformity is improved, the risk of film stripping of large-area metal can be reduced, and the product performance reliability is improved.

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] LED (light-emitting diode) is a commonly used light-emitting device, which is currently widely used in lighting, display and other fields. With the development of display technology, display products with Mini LED and Micro LED as display pixels have emerged. The voltage drop on the power structure that drives the pixels to emit light in display products affects the display uniformity. If the area of ​​the power structure is increased to reduce the voltage drop, there will be a problem of large-area metal film peeling, which affects the performance and reliability of the product. Summary of the invention

[0003] Embodiments of the present invention provide a display panel and a display device to solve the technical problem of improving product performance reliability.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, the display panel comprising a substrate and a first metal layer located on one side of the substrate, the first metal layer comprising a first metal portion and a second metal portion connected to each other;

[0005] The first metal part includes a plurality of first exhaust holes, and the second metal part includes a plurality of second exhaust holes, wherein an arrangement of the plurality of first exhaust holes is different from an arrangement of the plurality of second exhaust holes.

[0006] In a second aspect, based on the same inventive concept, an embodiment of the present invention further provides a display device, comprising a display panel provided by any embodiment of the present invention.

[0007] The display panel and display device provided by the embodiments of the present invention have the following beneficial effects: the embodiments of the present invention design the arrangement of the exhaust holes differently in accordance with the locations of different metal parts in the first metal layer, which can help to discharge the gas in the process and prevent the first metal layer from peeling off. In the application, the first metal layer is designed as a metal layer with a large area, which can reduce the voltage drop of the signal transmitted by the first metal layer, improve the display uniformity, and reduce the risk of film peeling of a large area of ​​metal, thereby improving the product performance reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative labor.

[0009] Figure 1 A partial schematic diagram of a display panel provided by an embodiment of the present invention;

[0010] Figure 2 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0011] Figure 3A A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0012] Figure 3B A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0013] Figure 4 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0014] Figure 5 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0015] Figure 6 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0016] Fig. 7A A schematic diagram of another display panel provided by an embodiment of the present invention;

[0017] Figure 7B A schematic diagram of a film layer structure of another display panel provided by an embodiment of the present invention;

[0018] Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0019] Fig. 9A A schematic diagram of another display panel provided by an embodiment of the present invention;

[0020] Fig. 9B A schematic diagram of another display panel provided by an embodiment of the present invention;

[0021] Fig. 9C A pixel circuit diagram provided by an embodiment of the present invention;

[0022] Fig.10 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0023] Fig.11 A schematic diagram of another display panel provided by an embodiment of the present invention;

[0024] Fig.12 A layout design diagram of a first metal layer of another display panel provided by an embodiment of the present invention;

[0025] Fig.13 A partial schematic diagram of another display panel provided by an embodiment of the present invention;

[0026] Fig.14A A schematic diagram of another display panel provided by an embodiment of the present invention;

[0027] Fig. 14B for Fig.14A Enlarged view of the middle area at position Q1;

[0028] Fig.15 for Fig.10 A local enlarged view of the Q2 position in the middle area;

[0029] Fig.16 A schematic diagram of a display device provided by an embodiment of the present invention;

[0030] Fig.17 A schematic diagram of another display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0033] Figure 1 A partial schematic diagram of a display panel provided by an embodiment of the present invention, Figure 1 The local position of the first metal layer on the substrate is shown schematically. Figure 1As shown, the first metal layer M1 includes a first metal part M11 and a second metal part M12 that are connected to each other. The first metal part M11 includes a plurality of first exhaust holes 10, and the second metal part M12 includes a plurality of second exhaust holes 20. The exhaust holes penetrate the metal layer in the thickness direction of the metal layer, and the exhaust holes are equivalent to holes dug on the metal layer. The exhaust holes are used as gas exhaust channels in the process, which can prevent the first metal layer M1 with a large area from peeling off due to the inability to exhaust gas. Among them, the arrangement of the plurality of first exhaust holes 10 is different from the arrangement of the plurality of second exhaust holes 20. The arrangement of the exhaust holes includes parameters such as the arrangement rules of the exhaust holes in the row direction / column direction, the pitch of the exhaust holes in the row direction / column direction, the size of the exhaust holes in the row direction / column direction, the spacing between two adjacent exhaust holes in the row direction / column direction, and the setting density of the exhaust holes.

[0034] In the embodiment of the present invention, the second metal part M12 is connected to the first metal part M11, and the second metal part M12 at least partially surrounds the first metal part M11, then the first metal part M11 and the second metal part M12 are connected so that the first metal layer M1 becomes a large-area metal layer in the display panel. The first metal part M11 and the second metal part M12 located at different positions in the first metal layer M1 are respectively provided to include a plurality of exhaust holes, and the arrangement of the exhaust holes on the two metal parts is different. In some embodiments, the first metal layer M1 can be used to transmit the power supply voltage required for display, and setting it to a large area can reduce the voltage drop of the power supply voltage and improve the display uniformity.

[0035] The embodiment of the present invention designs the arrangement of the exhaust holes differently in accordance with the locations of different metal parts in the first metal layer M1, which can help to discharge the gas in the process and prevent the first metal layer M1 from peeling off. In the application, the first metal layer M1 is designed as a metal layer with a large area, which can reduce the voltage drop of the signal transmitted by the first metal layer M1, improve the display uniformity, and reduce the risk of film peeling of large-area metal, thereby improving the product performance reliability.

[0036] In some embodiments, Figure 2 A schematic diagram of another display panel provided by an embodiment of the present invention, such as Figure 2 As shown, the display panel includes a pixel area Z1 and a non-pixel area Z2, and the pixel area Z1 includes a light-emitting element 60. The light-emitting element 60 is a MiniLED or a Micro LED. Optionally, a pixel area Z1 includes at least one red light-emitting element 61, at least one green light-emitting element 62 and at least one blue light-emitting element 63. Figure 2The arrangement of the light-emitting element 60 in the middle pixel area Z1 is only schematically indicated and is not intended to limit the present invention. Among them, at least part of the first metal part M11 is located in the pixel area Z1, and the second metal part M12 is located in the non-pixel area Z2. In order to drive the light-emitting element 60 to emit light, the positive and negative electrodes of the light-emitting element 60 need to be connected to corresponding structures, such as the positive electrode is connected to the positive power supply structure through the pixel circuit, and the negative electrode is connected to the negative power supply structure. Therefore, corresponding metal connecting electrodes need to be set for the positive and negative electrodes at the location of the light-emitting element 60. When the first metal layer M1 adopts a large-area metal design, the arrangement of the exhaust holes in the first metal layer M1 is differently set according to the positions of the pixel area Z1 and the non-pixel area Z2, which can help to discharge gases in the process and prevent film peeling from affecting product performance reliability.

[0037] In some embodiments, Figure 3A A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 3A The structure of the first metal portion M11 and the second metal layer portion M12 at a local position in the first metal layer M1 is schematically shown. Figure 3A As shown, in the first metal part M11, a plurality of first exhaust holes 10 are arranged along the first direction y, and a plurality of first exhaust holes 10 are arranged along the second direction x, and the first direction y and the second direction x intersect. For example, the first direction y is the column direction and the second direction x is the row direction. In the second metal part M12, a plurality of second exhaust holes 20 are arranged along the first direction y, and a plurality of second exhaust holes 20 are arranged along the second direction x. Arrangement of a plurality of first exhaust holes 10 along the first direction y means that a plurality of first exhaust holes 10 arranged along the first direction y are basically located on the same straight line extending along the first direction y, that is, the first exhaust holes 10 arranged along the same direction are basically aligned in their arrangement direction and are not roughly misaligned. Similarly, a plurality of first exhaust holes 10 arranged along the second direction x are basically aligned in their arrangement direction and are not roughly misaligned. Similarly, the arrangement of the second exhaust holes 20 along the first direction y / second direction x can also be understood by reference. Two first exhaust holes 10 adjacent to each other in the first direction y means that the two first exhaust holes 10 are adjacent to each other and are basically located on the same straight line extending in the first direction y. Two first exhaust holes 10 adjacent in the second direction x refer to the two first exhaust holes 10 being adjacent and substantially located on the same straight line extending in the second direction x. Two second exhaust holes 20 adjacent in the first direction y / second direction x may be understood by reference.

[0038] In some embodiments, in the first direction y, the pitch between two adjacent first exhaust holes 10 is different from the pitch between two adjacent second exhaust holes 20; and / or, in the second direction x, the pitch between two adjacent first exhaust holes 10 is different from the pitch between two adjacent second exhaust holes 20. The pitch between two adjacent exhaust holes in a certain direction refers to the interval distance between the same positions on the two exhaust holes, such as the interval distance between the centers of the two exhaust holes. Figure 3B Another partial schematic diagram of a display panel provided by an embodiment of the present invention Figure 3B schematically shows a pixel region Z1 and a non-pixel region Z2. As Figure 3B shown, in the first direction y, the pitch between two adjacent first exhaust holes 10 is L4, and the pitch between two adjacent second exhaust holes 20 is L3, where L4≠L3. Optionally, L4 < L3. In the second direction x, the pitch between two adjacent first exhaust holes 10 is L2, and the pitch between two adjacent second exhaust holes 20 is L1, where L1≠L2. Optionally, L2 < L1. In the embodiments of the present invention, by differentially setting the pitches of adjacent first exhaust holes 10 and adjacent second exhaust holes 20 in the first direction y and / or the second direction x, the arrangement patterns of the plurality of first exhaust holes 10 and the plurality of second exhaust holes 20 are made different by adjusting the pitches between the exhaust holes at different positions. Reasonable setting of the exhaust holes at different positions in the first metal layer can cooperate with the structures in other film layers to meet the design requirements of the display panel. In the embodiments of the present invention, the shapes of the first exhaust holes 10 and the second exhaust holes 20 are not limited, and the two shapes can be the same or different. In the drawings of the embodiments of the present invention, only the shapes of the first exhaust holes 10 and the second exhaust holes 20 are schematically shown as rectangles.

[0039] In some embodiments, in the first direction y, the width of the first exhaust hole 10 is equal to the width of the second exhaust hole 20, and the distance between two adjacent first exhaust holes 10 is different from the distance between two adjacent second exhaust holes 20. For example, the distance between two adjacent first exhaust holes 10 in the first direction y is set to be greater than the distance between two adjacent second exhaust holes 20 in the first direction y. In this way, the pitches of the first exhaust holes 10 and the second exhaust holes 20 in the first direction y can be made different, and further the arrangement patterns of the plurality of first exhaust holes 10 and the plurality of second exhaust holes 20 can be made different.

[0040] In other embodiments, in the second direction x, the width of the first exhaust hole 10 is equal to the width of the second exhaust hole 20, and the spacing between two adjacent first exhaust holes 10 is different from the spacing between two adjacent second exhaust holes 20. For example, the spacing between two adjacent first exhaust holes 10 in the second direction x is set to be greater than the spacing between two adjacent second exhaust holes 20 in the second direction x. In this way, the pitches of the first exhaust holes 10 and the second exhaust holes 20 in the second direction x can be different, thereby making the arrangement of the plurality of first exhaust holes 10 and the arrangement of the plurality of second exhaust holes 20 different.

[0041] In some embodiments, the first exhaust hole 10 and the second exhaust hole 20 have the same hole area, and the hole area of ​​the exhaust hole refers to the area of ​​the positive projection of the exhaust hole on the plane where the substrate is located. For example, the widths of the two exhaust holes in the first direction y are equal, and the widths of the two exhaust holes in the second direction x are equal. In the first direction y, the spacing between two adjacent first exhaust holes 10 is different from the spacing between two adjacent second exhaust holes 20; and / or, in the second direction x, the spacing between two adjacent first exhaust holes 10 is different from the spacing between two adjacent second exhaust holes 20.

[0042] In some embodiments, the hole areas of the first exhaust holes 10 and the second exhaust holes 20 are different, such as the widths of the two exhaust holes in the first direction y are not equal, or the widths of the two exhaust holes in the second direction x are not equal. At the same time, it is set that in the first direction y, the spacing between two adjacent first exhaust holes 10 is equal to the spacing between two adjacent second exhaust holes 20; and / or, in the second direction x, the spacing between two adjacent first exhaust holes 10 is equal to the spacing between two adjacent second exhaust holes 20. In this way, the first exhaust holes 10 and the second exhaust holes 20 have different pitches in the first direction y and / or the second direction x.

[0043] In other embodiments, the widths of the first exhaust holes 10 and the second exhaust holes 20 in the first direction y are not equal, and the widths in the second direction x are not equal. In the first direction y, the spacing between two adjacent first exhaust holes 10 is different from the spacing between two adjacent second exhaust holes 20; and / or, in the second direction x, the spacing between two adjacent first exhaust holes 10 is different from the spacing between two adjacent second exhaust holes 20. In this way, the first exhaust holes 10 and the second exhaust holes 20 have different pitches in the first direction y and / or the second direction x.

[0044] In some embodiments, Figure 3BAs shown, the pitch L4 of the first exhaust hole 10 in the first direction y is not equal to the pitch L2 in the second direction x, such as L4 is greater than L2; and / or the pitch L3 of the second exhaust hole 20 in the first direction y is equal to the pitch L1 in the second direction x. In this embodiment, the first exhaust holes 10 and the second exhaust holes 20 are arranged in different ways, wherein a plurality of first exhaust holes 10 are arranged in a relatively regular array, and / or a plurality of second exhaust holes 20 are also arranged in a relatively regular array, and the mask plate used for exhaust hole etching is simpler in design. Moreover, such a setting can facilitate the coordination of the first metal layer M1 with the results of other film layers, such as cooperating with each other to form a relatively tight light shielding layer to shield the transistor between the first metal layer M1 and the substrate.

[0045] In some embodiments, L3 = L1, L2 <L4。

[0046] In some embodiments, Figure 3A As shown, a plurality of first exhaust holes 10 are arranged into a first hole column 10L along a first direction y, and a plurality of first exhaust holes 10 are arranged into a first hole row 10H along a second direction x, and two adjacent first exhaust holes 10 in the first hole row 10H belong to two adjacent first hole columns 10L. A plurality of first exhaust holes 10 on the first metal part M11 are arranged in a determinant. A plurality of second exhaust holes 20 are arranged into a second hole column 20L along a first direction y, and a plurality of second exhaust holes 20 are arranged into a second hole row 20H along a second direction x; at least one second hole column 20L is spaced between two adjacent second exhaust holes 20 in the second hole row 20H, and / or at least one second hole row 20H is spaced between two adjacent second exhaust holes 20 in the second hole column 20L. In this embodiment, a plurality of first exhaust holes 10 on the first metal part M11 are arranged in a determinant; on the second metal part M12, at least two adjacent second hole rows 20H are staggered in the first direction y, and at least two adjacent second hole columns 20L are staggered in the second direction x. In this way, the arrangement of the plurality of first exhaust holes 10 is different from the arrangement of the plurality of second exhaust holes 20. In addition, the second exhaust holes 20 are arranged in a staggered array, which can make the area of ​​the exhaust holes larger, improve the exhaust capacity, and be more conducive to reducing the risk of film peeling.

[0047] Figure 3A The embodiment shows that a second hole column 20L is spaced between two adjacent second exhaust holes 20 in a second hole row 20H in the second metal part M12 , and a second hole row 20H is spaced between two adjacent second exhaust holes 20 in a second hole row 20L. Figure 4 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 4 FIG. 2 shows another arrangement of the second exhaust holes 20 on the second metal part M12. Figure 4As shown, two second hole columns 20L are spaced between two adjacent second exhaust holes 20 in the first second hole row 20H-1, and in the second second hole row 20H-2, two second hole columns 20L are spaced between some of the adjacent second exhaust holes 20, and no second hole column 20L is spaced between some of the adjacent second exhaust holes 20, that is, two second hole columns 20L are spaced between two adjacent second exhaust holes 20 in some second hole rows 20H; and one second hole row 20H is spaced between two adjacent second exhaust holes 20 in the second hole column 20L.

[0048] In other embodiments, Figure 5 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Figure 5 FIG. 2 shows a first metal portion M11 in the first metal layer M1 and a portion of the second metal portion M12 connected thereto. Figure 5 As shown, a plurality of first exhaust holes 10 are arranged into a first hole row 10L along a first direction y, and three adjacent first exhaust holes 10 belonging to two adjacent first hole rows 10L form a first triangle 41, and the first triangle 41 is a right triangle; the longest side of the first triangle 41 is a first side 411, and the extension direction of the first side 411 intersects the first direction y and the second direction x. Three adjacent first exhaust holes 10 refer to any two of the three first exhaust holes 10 being adjacent. A plurality of second exhaust holes 20 are arranged into a second hole column 20L along the first direction y, and three adjacent second exhaust holes 20 belonging to two adjacent second hole columns 20L form a second triangle 42, and the longest side of the second triangle 42 is the second side 421, and the second side 421 extends along the first direction y; and / or, a plurality of second exhaust holes 20 are arranged into a second hole row 20H along the second direction x, and three adjacent second exhaust holes 20 belonging to two adjacent second hole rows 20H form a third triangle 43, and the longest side of the third triangle 43 is the third side 431, and the third side 431 extends along the second direction x. In this way, the arrangement of the plurality of first exhaust holes 10 is different from the arrangement of the plurality of second exhaust holes 20. Among them, three adjacent first exhaust holes 10 refer to any two of the three first exhaust holes 10 being adjacent, and three adjacent second exhaust holes 20 refer to any two of the three second exhaust holes 20 being adjacent.

[0049] In some embodiments, the first triangle 41 is a right triangle, and the lengths of two right-angled sides of the first triangle 41 are not equal.

[0050] In some embodiments, the second triangle 42 is an isosceles triangle, and the third triangle 43 is an isosceles triangle.

[0051] Further, in some embodiments, the second triangle 42 and the third triangle 43 are respectively isosceles right triangles.

[0052] In some embodiments, Figure 3A As shown, the arrangement density of the first exhaust holes 10 is less than the arrangement density of the second exhaust holes 20. The density of the exhaust holes is arranged in accordance with the structural difference of other film layers where the first metal part M11 and the second metal part M12 are located. The arrangement density of the second exhaust holes 20 in the second metal part M12 is relatively large, and the gas generated in the process is more easily discharged through the second exhaust holes 20. The arrangement density of the first exhaust holes 10 in the first metal part M11 is relatively small. For example, the first metal part M11 can cooperate with the structure in other metal layers to form a tighter light shielding layer in the area where it is located, which can prevent light from entering the transistor below through the area where the first metal part M11 is located to cause leakage, thereby ensuring the stability of the transistor characteristics.

[0053] The density of the exhaust holes is determined by the number of exhaust holes per unit area. For example, the number of the second exhaust holes 20 per unit area is greater than the number of the first exhaust holes 10 per unit area.

[0054] In some embodiments of the present invention, the display panel further includes a second metal layer located on one side of the substrate, and the second metal layer and the first metal layer are located in different layers. Figure 6 A schematic diagram of another display panel provided by an embodiment of the present invention, Figure 6 The locations of the third metal portion and the fourth metal portion in the second metal layer are illustrated. Fig. 7A A schematic diagram of another display panel provided by an embodiment of the present invention, Fig. 7A It is a top view of the overlapping area of ​​the first metal layer and the third metal layer.

[0055] like Figure 6 As shown, the second metal layer M2 includes a third metal portion M21, and the third metal portion M21 includes a plurality of third exhaust holes 30. Fig. 7A It can be seen from the top view that along the direction perpendicular to the plane where the substrate is located, the third metal part M21 and the first metal part M11 overlap, and the third exhaust hole 30 and the first exhaust hole 10 at least partially do not overlap. The third exhaust hole 30 is set on the third metal part M21 of the second metal layer M2, which can be used to reduce the voltage drop of the transmission signal when the second metal part M21 is a large area, and the third exhaust hole 30 can be used to discharge the gas generated in the process to prevent the film peeling of the third metal part M21. In addition, the third exhaust hole 30 and the first exhaust hole 10 are set to at least partially not overlap, which can form a relatively tight light shielding layer in the overlapping area of ​​the third metal part M21 and the first metal part M11, and can prevent light from entering the transistor below through the area where the third metal part M21 and the first metal part M11 are located to cause leakage, thereby ensuring the stability of the transistor characteristics and improving the reliability of the display panel performance.

[0056] like Figure 6 As shown, the second metal layer M2 includes a fourth metal portion M22, and the fourth metal portion M22 includes a plurality of fourth exhaust holes 40. Fig. 7A It can be seen from the top view that along the direction perpendicular to the plane where the substrate is located, the fourth metal part M22 and the second metal part M12 overlap, and the fourth exhaust hole 40 and the second exhaust hole 20 at least partially do not overlap. The fourth exhaust hole 40 is set on the fourth metal part M22 of the second metal layer M2. When the fourth metal part M22 is a large area, it can be used to reduce the voltage drop of its transmission signal, and the fourth exhaust hole 40 can be used to discharge the gas generated in the process to prevent the film peeling of the fourth metal part M22. In addition, the fourth exhaust hole 40 and the second exhaust hole 20 are set to at least partially not overlap, which can form a relatively tight light shielding layer in the overlapping area of ​​the fourth metal part M22 and the second metal part M12, and can prevent light from entering the transistor below through the area where the fourth metal part M22 and the second metal part M12 are located to cause leakage, thereby ensuring the stability of the transistor characteristics and the reliability of the display panel performance.

[0057] Figure 7B A schematic diagram of a film layer structure of another display panel provided by an embodiment of the present invention is shown in FIG. Figure 7B As shown, the display panel includes a substrate 00, a driving layer 01 located on the substrate 00, and a first metal layer M1 and a second metal layer M2 located on a side of the driving layer 01 away from the substrate 00. The driving layer 01 includes a pixel circuit 64, Figure 7B The middle mark shows a transistor TFT in the pixel circuit 64. The driving layer 01 includes a semiconductor layer 011, a gate metal layer 012, an electrode metal layer 013 and a source-drain metal layer 014. The active layer of the transistor TFT is located in the semiconductor layer 011, and a light shielding layer 02 is also provided between the semiconductor layer 011 and the substrate 00. In the direction e perpendicular to the plane where the substrate 00 is located, the light shielding layer 02 overlaps with the active layer of the transistor TFT. The light shielding layer 02 is used to shield the active layer of the transistor TFT on the substrate 00 side to prevent light from irradiating the active layer and affecting the performance of the transistor TFT. The gate of the transistor TFT is located in the gate metal layer 012, and a first electrode plate of a storage capacitor is provided in the electrode metal layer 013, and a second electrode plate of the storage capacitor is located in the gate metal layer 012. The source and drain of at least part of the transistor TFT are provided in the source-drain metal layer 014.

[0058] In some embodiments, Figure 7BAs shown, the first metal layer M1 is located on the side of the second metal layer M2 close to the substrate 00, and a pixel circuit 64 is arranged between the first metal layer M1 and the substrate 00. Among them, the light-emitting element 30 is arranged on the side of the second metal layer M2 away from the first metal layer M1. That is, compared with the first metal layer M1, the second metal layer M2 is closer to the light-emitting element 60. A positive power supply structure for transmitting a positive power supply signal can be arranged in the first metal layer M1, and a negative power supply structure for transmitting a negative power supply signal can be arranged in the second metal layer M2. Setting both the positive power supply structure and the negative power supply structure as a large-area metal structure can reduce the voltage drop of the transmission power supply signal and improve the display uniformity. In addition, by reasonably setting the arrangement of exhaust holes at different positions in accordance with the location of the large-area metal, the gas generated in the process of the display panel can be discharged through the exhaust holes to prevent the film peeling phenomenon of the large-area metal.

[0059] like Figure 6 As shown, multiple fourth exhaust holes 40 are arranged into a third hole column 40L along the first direction y, and multiple fourth exhaust holes 40 are arranged into a third hole row 40H along the second direction x, at least one third hole column 40L is spaced between two adjacent fourth exhaust holes 40 in the third hole row, and at least one third hole row 40H is spaced between two adjacent fourth exhaust holes 40 in the third hole column 40L. Figure 6 The arrangement of the fourth exhaust holes 40 is similar to Figure 3A The arrangement of the second exhaust holes 20 is similar, with a third hole column 40L between two adjacent fourth exhaust holes 40 in the third hole row, and a third hole row 40H between two adjacent fourth exhaust holes 40 in the third hole column 40L. The fourth exhaust holes 40 are arranged in a staggered array, which can make the area of ​​the exhaust holes account for a larger proportion, improve the exhaust capacity, and be more conducive to reducing the risk of film peeling.

[0060] Depend on Fig. 7A It can be seen that the orthographic projection of the fourth exhaust hole 40 on the substrate is located in the area surrounded by the orthographic projections of the four adjacent second exhaust holes 20 on the substrate, and the orthographic projection of the second exhaust hole 20 on the substrate is located in the area surrounded by the orthographic projections of the four adjacent fourth exhaust holes 40 on the substrate. Among them, the four adjacent second exhaust holes 20 refer to any two of the four second exhaust holes 20 are adjacent, and the four adjacent fourth exhaust holes 40 refer to any two of the four fourth exhaust holes 40 are adjacent. This embodiment can make the second exhaust hole 20 and the fourth exhaust hole 40 not overlap, so the overlapping area of ​​the second metal part M12 and the fourth metal part M22 forms a relatively strict light shielding layer, which can prevent light from entering the transistor below through the area where the fourth metal part M22 and the second metal part M12 are located to cause leakage, thereby ensuring the stability of the transistor characteristics and the reliability of the display panel performance.

[0061] The fourth metal part M22 in the second metal layer M2 of the display panel overlaps with the second metal part M12 in the first metal layer M1. When designing the display panel, the second exhaust holes 20 in the second metal part M12 are firstly designed to be arranged in an array, and then the arrangement of the fourth exhaust holes 40 in the fourth metal part M22 is designed according to the positions of the second exhaust holes 20, so that the second exhaust holes 20 and the fourth exhaust holes 40 do not overlap, and a relatively tight light shielding layer is formed in the overlapping area of ​​the second metal part M12 and the fourth metal part M22.

[0062] In some embodiments, Figure 6 As shown, the display panel includes a second metal layer M2, and the second metal layer M2 and the first metal layer M1 are located in different layers. The second metal layer M2 includes a third metal part M21, and the third metal part M21 overlaps with the first metal part M11 along a direction perpendicular to the plane where the substrate is located. The third metal part M21 includes a third exhaust hole 30. Among them, the third metal part M21 includes a first electrode 51 and a second electrode 52, and the third metal part M21 has a first groove 53. The first electrode 51 is located in the first groove 53, and the second electrode 52 shares a side wall with at least one first groove 53. For example, the first electrode 51 serves as an anode and the second electrode 52 serves as a cathode. Among them, at least a part of the third metal part M21 is located in the pixel area Z1. Three first electrodes 51 and three second electrodes 52 are arranged in a pixel area Z1. As Figure 6 As shown, the first electrode 51 and the second electrode 52 are alternately arranged in the second direction x, one second electrode 52 shares a side wall with one first trench 53, and the other two second electrodes 52 share side walls with two first trenches 53 respectively. The first trench 53 penetrates the third metal layer M2 in the thickness direction of the third metal layer M2, and the first trench 53 also has an exhaust function, but the purpose of setting the first trench 53 is to accommodate the first electrode 51, so that the first electrode 51 and the second electrode 52 are made in the same layer and insulated from each other. Therefore, the area size of the first trench 53 is larger than the area size of the third exhaust hole 30.

[0063] In the embodiment of the present invention, the third exhaust hole 30 and the first exhaust hole 10 are arranged in a direction perpendicular to the plane where the substrate is located, and at least part of them do not overlap. Since the first trench 53 and the second electrode 52 are arranged in the area where the third metal part M21 in the second metal layer M2, the third exhaust hole 30 is appropriately arranged on the second electrode 52. When designing the display panel, the arrangement of the exhaust holes in the first metal layer M1 is first designed, and then the position of the first exhaust hole 10 in the first metal part M12 is appropriately adjusted according to the arrangement of the second electrode 52 in the third metal part M21 and the position of the third exhaust hole 30, so as to ensure that the light shielding layer formed by the overlap of the first metal part M12 and the third metal part M21 has a better light shielding effect. For example, after the position of the first exhaust hole 10 is appropriately adjusted, the pitch L4 of the first exhaust hole 10 in the first direction y is not equal to the pitch L2 in the second direction x, and / or the pitch L3 of the second exhaust hole 20 in the first direction y is equal to the pitch L1 in the second direction x.

[0064] Figure 8 A schematic diagram of another display panel provided by an embodiment of the present invention, Figure 8 The diagram schematically shows a local area of ​​the second metal layer M2 and a light emitting element 60 respectively bonded to the first electrode 51 and the second electrode 52. Figure 8 As shown in FIG. 1 , the light emitting element 60 includes a red light emitting element 61, a green light emitting element 62 and a blue light emitting element 63. Figure 8 It can be seen from the top view that along the direction perpendicular to the plane where the substrate is located, one end of the light-emitting element 60 overlaps with the first electrode 51, the other end overlaps with the second electrode 52, and the light-emitting element 60 does not overlap with the third exhaust hole 30. Since the light-emitting element 60 is correspondingly connected to the first electrode 51 and the second electrode 52 located on the second metal layer M2, the light-emitting element 60 is arranged not to overlap with the third exhaust hole 30, which can not only ensure that the overlapping area of ​​the light-emitting element 60 and the first electrode 51 / the second electrode 52 is large enough and the connection impedance is low, but also the overlapping position of the light-emitting element 60 and the first electrode 51 / the second electrode 52 is relatively flatter, which is conducive to improving the yield of the bonding process.

[0065] Combination Fig. 7A From the overlapping of the first metal layer M1 and the second metal layer M2, the light emitting element 60 may partially overlap with the first exhaust hole 10 in the first metal part M11. This is because the first metal layer M1 is located on the side of the second metal layer M2 close to the substrate 00, and an organic insulating layer is also provided between the first metal layer M1 and the second metal layer M2. Therefore, the partial overlap of the light emitting element 60 and the first exhaust hole 10 does not affect the flatness of the bonding area between the light emitting element 60 and the electrode.

[0066] In some embodiments, Figure 6As shown, there is a first gap 54 between the first electrode 51 and the side wall of the first trench 53. Fig. 7A From the top view, along the direction perpendicular to the plane where the substrate is located, the first exhaust hole 10 and the first slit 54 do not overlap. In other words, the first slit 54 overlaps with the solid part on the first metal part M11. With this arrangement, a light shielding layer can be formed at the overlapping position of the first slit 54 and the first metal part M11, so that the area of ​​the light-proof area formed by the overlap of the first metal layer M1 and the second metal layer M2 is larger, which is more conducive to preventing light from being emitted to the transistor below through the overlapping area of ​​the first metal layer M1 and the second metal layer M2.

[0067] like Fig. 7A As shown, in the first direction y, the spacing between two adjacent first exhaust holes 10 is d1, and the width of the third exhaust hole 30 is d2; d1>d2. Such a setting can make the orthographic projection of the third exhaust hole 30 on the plane where the substrate is located between the orthographic projections of the two adjacent first exhaust holes 10 on the plane where the substrate is located, and make the third exhaust hole 30 not overlap with the first exhaust hole 10. In this way, the area of ​​the light-proof area formed by the overlap of the first metal layer M1 and the second metal layer M2 is larger, which is more conducive to preventing light from being projected into the transistor below through the overlap area of ​​the first metal layer M1 and the second metal layer M2.

[0068] Combination Figure 6 and Fig. 7A From the perspective of FIG. 1 , the first electrode 51 and at least one second electrode 52 respectively include a third exhaust hole 30. The width of the second electrode 52 between two adjacent first trenches 53 in the second direction x is greater than the width of the first exhaust hole 10 in the second direction x, and / or the width of the first electrode 51 in the second direction x is greater than the width of the first exhaust hole 10 in the second direction x. This arrangement enables the third exhaust hole 30 and the first exhaust hole 10 to not overlap, so that the area of ​​the light-proof area formed by the overlap of the first metal layer M1 and the second metal layer M2 is larger, which is more conducive to preventing light from being emitted to the transistor below through the overlap area of ​​the first metal layer M1 and the second metal layer M2.

[0069] In some embodiments, Figure 6As shown, the second metal layer M1 includes a fourth metal part M22, which is connected to the third metal part M21 and at least partially surrounds the third metal part M21. In the direction perpendicular to the plane where the substrate is located, the fourth metal part M22 overlaps the second metal part M12. The fourth metal part M22 includes a plurality of fourth exhaust holes 40. Specifically, the fourth metal part M22 is electrically connected to the second electrode 52 in the third metal part M21. Among them, the third metal part M21 is at least partially located in the pixel area Z1, and the fourth metal part M22 is at least partially located in the non-pixel area Z2. This embodiment enables the second metal layer M2 to be a metal layer with a large area, which can reduce the voltage drop of the signal transmitted by the fourth metal part M22 and improve the display uniformity. Moreover, the third metal part M21 and the fourth metal part M22 are respectively provided with exhaust holes with different arrangements, which can reduce the risk of film peeling of large-area metal and improve the performance reliability of the product.

[0070] like Figure 6 As shown, the area of ​​at least one third exhaust hole 30 is smaller than the area of ​​the fourth exhaust hole 40, wherein the area of ​​the exhaust hole refers to the area of ​​its positive projection on the plane where the substrate is located. Since the third metal part M21 includes the first electrode 51 and the second electrode 52, it is necessary to design the position and area size of the third exhaust hole 30 to adapt to the shape of the first electrode 51 and the second electrode 52 to ensure the exhaust capacity at the position of the third metal part M21. Moreover, setting the area size of at least part of the third exhaust hole 30 relatively small is also beneficial to match it with the area size of the first exhaust hole 10 in the first metal part M11, so that the third exhaust hole 30 and the first exhaust hole 10 do not overlap, which is beneficial to shielding the transistor in the display panel.

[0071] like Figure 6 As shown, the third exhaust hole 30 includes a first type of third exhaust hole 31, part of the first type of third exhaust hole 31 is located on the first electrode 51, and part of the first type of third exhaust hole 31 is located on the second electrode 52 arranged between two adjacent first electrodes 51. Optionally, the third exhaust hole 30 also includes a second type of third exhaust hole 32, the second type of third exhaust hole 32 is located on the second electrode 52, and the second electrode 52 is located at the edge of the third metal part M21, or in other words, the second electrode 52 is adjacent to only one first electrode 51. Since the second type of third exhaust hole 32 is located at the edge of the third metal part M21, that is, the second type of third exhaust hole 32 is adjacent to the fourth metal part M22. Therefore, the area size of the second type of third exhaust hole 32 can be set to be different from the area size of the first type of third exhaust hole 31, such as setting the area of ​​the second type of third exhaust hole 32 to be the same as the area of ​​the fourth exhaust hole 40.

[0072] in addition, Figure 6As shown in the figure, the first electrode 51 and the second electrode 52 are adjacent to each other in the second direction x. In other embodiments, the first electrode 51 and the second electrode 52 are adjacent to each other in the first direction y, which is not shown in the figure again.

[0073] In some embodiments, Fig. 9A A schematic diagram of another display panel provided by an embodiment of the present invention, such as Fig. 9A As shown, the display panel includes a first edge Y1 extending along a first direction y, and the pixel area Z1 includes a red light emitting element 61, a green light emitting element 62, and a blue light emitting element 63. The display panel is also provided with a pixel circuit 64 electrically connected to the red light emitting element 61, the green light emitting element 62, and the blue light emitting element 63, respectively. Fig. 9A A plurality of pixel areas Z1 are shown in FIG. 1 , and the area outside the pixel area Z1 is a non-pixel area. Fig. 9A As shown in the figure, one pixel area Z1 is provided with two red light emitting elements 61 , two green light emitting elements 62 and two blue light emitting elements 63 , and one pixel area Z1 corresponds to one pixel circuit 64 . Fig. 9A The schematic pixel circuit 64 includes a first pixel circuit 641 and a second pixel circuit 642 . The first pixel circuit 641 and the light emitting element 60 connected thereto are misaligned, and the second pixel circuit 642 and the light emitting element 60 connected thereto at least partially overlap in a direction perpendicular to the plane of the substrate.

[0074] Fig. 9A The schematic pixel area Z1 has a redundant design, such as one of the two red light-emitting elements 61 is a redundant design. First, a red light-emitting element 61 is fixed in a pixel area Z1. When the detection finds that the red light-emitting element 61 has a defect and cannot emit light, another red light-emitting element 61 is fixed for repair. The red light-emitting element 61 fixed first remains in the original position, so that there are two red light-emitting elements 61 in a pixel area Z1. The green light-emitting element 62 and the blue light-emitting element 63 are repaired in the same way. Finally, there may be two red light-emitting elements 61, two green light-emitting elements 62 and two blue light-emitting elements 63 in a pixel area Z1. For example, when only the red light-emitting element 61 is repaired, there are two red light-emitting elements 61, one green light-emitting element 62 and one blue light-emitting element 63 in a pixel area Z1.

[0075] In other embodiments, a pixel area Z1 is provided with a red light emitting element 61, a green light emitting element 62, and a blue light emitting element 63. During manufacturing, a red light emitting element 61 is first fixed in a pixel area Z1. When it is detected that the red light emitting element 61 is defective and cannot emit light, the defective light emitting device is removed, and then a red light emitting element 61 is fixed in situ for repair. In this way, there is finally a red light emitting element 61 in a pixel area Z1. The green light emitting element 62 and the blue light emitting element 63 are repaired in the same way, and finally there is a red light emitting element 61, a green light emitting element 62, and a blue light emitting element 63 in a pixel area Z1.

[0076] The light emitting element 60 in the display panel includes a first light emitting element 60-1, and the first light emitting element 60-1 is electrically connected to the first pixel circuit 641. Fig. 9A It can be seen that the orthographic projection of the first light-emitting element 60-1 on the substrate and the orthographic projection of the first pixel circuit 641 on the substrate are misaligned in the first direction y and / or the second direction x. The first light-emitting element 60-1 is electrically connected to the first pixel circuit 641 through a connecting line 65. The misalignment of the orthographic projection of the light-emitting element 60 and the orthographic projection of the pixel circuit 64 in the first direction y means that the two do not overlap in the first direction y, and the misalignment in the second direction x means that the two do not overlap in the second direction x. Take the first direction y as the column direction and the second direction x as the row direction as an example. When the pixel circuit 64 is retracted along the first direction y relative to the edge of the display panel, that is, when the pixel circuit 64 is retracted at the upper and lower edges, the light-emitting element and the pixel circuit connected thereto do not overlap in the second direction x; when the pixel circuit 64 is retracted along the second direction x relative to the edge of the display panel, that is, when the pixel circuit 64 is retracted at the left and right edges, the light-emitting element and the pixel circuit connected thereto do not overlap in the first direction y. The pixel circuit is retracted along a first direction y relative to one edge of the display panel and along a second direction x relative to another edge of the display panel, so that the light emitting element and the pixel circuit connected thereto do not overlap in the second direction x and the first direction y.

[0077] like Fig. 9A As shown, the first pixel circuit 641 is retracted relative to the first edge Y1 along the second direction x in a direction away from the first edge Y1, thereby enabling other structures such as a shift register set at the edge position to be retracted relative to the first edge Y1. For example, setting the shift register to at least partially overlap with the light-emitting element 60 is equivalent to setting at least part of the shift register in the display area, which can reduce the area of ​​the non-display area and narrow the border.

[0078] Fig. 9AThe figure shows that the first pixel circuit 641 near the first edge Y1 is retracted inward along the second direction x away from the first edge Y1, so that the first pixel circuit 641 and the first light-emitting element 60-1 connected thereto are misaligned at least in the first direction y, while the first pixel circuit 641 and the first light-emitting element 60-1 connected thereto are still located in the same pixel row. Fig. 9A The embodiment can narrow the left and right borders of the display panel.

[0079] In some other embodiments, the display panel further includes a second edge extending along the second direction x, and at least part of the pixel circuits near the second edge are retracted inward along the second direction x in a direction away from the second edge, so that the pixel circuits and the light-emitting elements connected thereto are misaligned at least in the second direction x, and the pixel circuits with misalignment and the light-emitting elements connected thereto are not located in the same pixel row. In this solution, the pixel circuits and light-emitting elements with misalignment also need to be electrically connected via connecting wires. This embodiment can narrow the upper frame and / or lower frame of the display panel.

[0080] In some embodiments, Fig. 9B A schematic diagram of another display panel provided by an embodiment of the present invention, such as Fig. 9B In the illustrated local area of ​​the display panel, the light emitting elements 60 and the pixel circuits 64 connected thereto in the pixel areas Z1 in the first and second columns from the left are misaligned in the first direction y and misaligned in the second direction x, and the light emitting elements 60 and the pixel circuits 64 connected thereto in the pixel area Z1 in the third column from the left are misaligned in the second direction x. In this embodiment, the pixel circuits 64 corresponding to the pixel areas Z1 in the first and second columns from the left are inwardly contracted in the first direction y and the second direction x, and the pixel circuits 64 corresponding to the pixel area Z1 in the third column from the left are inwardly contracted in the first direction y.

[0081] In the embodiment of the present invention, the pixel circuit 64 can be any one in the prior art.

[0082] In one embodiment, the pixel circuit 64 is an aTbC pixel circuit, that is, it includes a transistors and b capacitors, where a and b are both positive integers. For example, the pixel circuit 64 is a 7T1C pixel circuit. Optionally, the first metal layer M1 is used to transmit a positive power supply voltage, and the second metal layer M2 is used to transmit a negative power supply voltage.

[0083] In one embodiment, the pixel circuit 64 includes a PAM (Pulse Amplitude Modulation) circuit and a PWM (Pulse Width Modulation) circuit. Fig. 9C A pixel circuit diagram provided by an embodiment of the present invention, such as Fig. 9CAs shown, the pixel circuit includes a first driving circuit 001 and a second driving circuit 002. The first driving circuit 001 is configured to control the duration of the driving current provided to the light-emitting element 60 based on the first data voltage PWM-data, and the second driving circuit 002 is configured to control the amplitude of the driving current provided to the light-emitting element 60 based on the second data voltage PAM-data.

[0084] The first driving circuit 001 includes a first driving transistor T1, a first gate reset transistor T2, a first data writing transistor T3, a first compensation transistor T4, a first control transistor T6, a second control transistor T5 and a first capacitor C1. The first capacitor C1 is a storage capacitor in the first driving circuit 001, and can also be called a first storage capacitor in the pixel circuit. The second control transistor T5 is connected between the first power supply voltage PWM-VDD and the first electrode of the second driving transistor T1, and the first control transistor T6 is connected between the second electrode of the first driving transistor T1 and the first node N1. The first data writing transistor T3 is connected to the first electrode of the first driving transistor T1, the first compensation transistor T4 is connected to the second electrode and the gate of the first driving transistor T1, and the first gate reset transistor T2 is connected to the gate of the first driving transistor T1. The first plate of the first capacitor C1 is connected to the gate of the first driving transistor T1, and the second plate of the first capacitor C1 is connected to the sweep signal SWEEP. Among them, the gate of the first gate reset transistor T2 is connected to the third scanning signal PWM-S1, and the gates of the first data writing transistor T3 and the first compensation transistor T4 are connected to the fourth scanning signal PWM-S2. The gates of the first control transistor T6 and the second control transistor T5 are connected to the first light emitting control signal PWM-EM.

[0085] The second driving circuit 002 includes a second driving transistor T7, a second gate reset transistor T8, a second data writing transistor T9, a second compensation transistor T10, a third control transistor T11, a fourth control transistor T12, an electrode reset transistor T13 and a second capacitor C2. The second capacitor C2 is a second storage capacitor in the pixel circuit. The third control transistor T11 is connected between the second power supply voltage PAM-VDD and the first electrode of the second driving transistor T7, and the fourth control transistor T12 is connected between the second electrode of the second driving transistor T7 and the light emitting element 60. The second driving transistor T7 is configured to generate a driving current under the control of its gate voltage, and the gate of the second driving transistor T7 is connected to the first node N1. The second data writing transistor T9 is connected to the first electrode of the second driving transistor T7, the second compensation transistor T10 is connected to the second electrode and the gate of the second driving transistor T7, the second gate reset transistor T8 is connected to the gate of the second driving transistor T7, the electrode reset transistor T13 is connected to the first electrode of the light emitting element 60, the fourth control transistor T12 is also connected to the first electrode of the light emitting element 60, and the second electrode of the light emitting element 60 is connected to the third power supply voltage VEE. The gate of the second gate reset transistor T8 is connected to the first scan signal PAM-S1; the gates of the second data write transistor T9, the second compensation transistor T10 and the electrode reset transistor T13 are connected to the second scan signal PAM-S2. The gates of the third control transistor T11 and the fourth control transistor T12 are connected to the second light emission control signal PAM-EM.

[0086] Display panel uses Fig. 9C When a pixel circuit is provided, a power supply structure needs to be set to provide PAM-VDD and PWM-VDD respectively. Optionally, the display panel includes a first metal layer M1, a second metal layer M2 and a third metal layer, the second metal layer M2 is located on the side of the first metal layer M1 away from the substrate, and the third metal layer is located on the side of the first metal layer M1 close to the substrate. The first metal layer M1 and the second metal layer M2 adopt the design of a nearly full-surface metal provided in an embodiment of the present invention, a power supply structure is made in the third metal layer to provide PWM-VDD, a power supply structure is made in the first metal layer M1 to provide PAM-VDD, and a power supply structure is made in the second metal layer M2 to provide a negative power supply voltage. Among them, the third metal layer can be Figure 7B Schematic diagram of the source and drain metal layer 014.

[0087] In another embodiment, if PAM-VDD and PWM-VDD are the same voltage, a positive power supply structure can be fabricated on the first metal layer M1 to provide PAM-VDD and PWM-VDD, and a power supply structure can be fabricated on the second metal layer M2 to provide a negative power supply voltage.

[0088] In some embodiments, Fig.10A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.10 The local position of the first metal layer M1 is shown schematically. Fig. 9A As shown in FIG. 1 , the display panel includes a connection line 65, a pixel circuit 64 and a light emitting element 60. One end of the connection line 65 is connected to the pixel circuit 64, and the other end is connected to the light emitting element 60. Fig.10 As shown, the first metal layer M1 includes a second trench 55, and the connecting wire 65 is located in the second trench 55. The connecting wire 65 is in the same layer as the first metal layer M1, and one end of the connecting wire 65 is connected to the pixel circuit 64, and the other end is connected to the light-emitting element 60. In this embodiment, the second trench 55 is made in the first metal layer M1, and the connecting wire 65 is made in the second trench 55, which can maximize the integrity of the structure of the first metal layer M1. When the first metal part M11 and the second metal part M12 in the first metal layer M1 are used to transmit the power signal, the voltage drop can be reduced to a large extent and the display uniformity can be improved.

[0089] In some embodiments, Fig.11 A schematic diagram of another display panel provided by an embodiment of the present invention, Fig.11 FIG. 1 is a top view of a stack of a first metal layer M1 and a second metal layer M2 at an edge of a display panel. The structure of the first metal layer M1 can be referred to as Fig.10 For understanding, the structure of the second metal layer M2 can refer to Figure 6 For understanding, see the embodiments. Fig.11 As shown, the display panel includes a first metal layer M1 and a second metal layer M2, and the first metal layer M1 is located on a side of the second metal layer M2 close to the substrate. The first metal layer M1 includes a first metal portion M11 and a second metal portion M12, and the second metal layer M2 includes a third metal portion M21 and a fourth metal portion M22. Fig.11 It can be seen from the top view that along the direction perpendicular to the plane where the substrate is located, the third metal portion M21 overlaps with the first metal portion M11, and the fourth metal portion M22 overlaps with the second metal portion M12. Figure 6 From the perspective of FIG. 5 , the third metal portion M21 includes a first groove 53 and a first electrode 51 . The first electrode 51 is located in the first groove 53 . Fig.11 It is shown that one end of the connection line 65 overlaps with the first electrode 51 along a direction perpendicular to the plane where the substrate is located, and the two are connected through a via V.

[0090] Fig.11 The pixel circuit is not shown, but the other end of the connection line 65 is actually connected to the pixel circuit. Fig.11 It can be seen that, along a direction perpendicular to the plane where the substrate is located, the first exhaust hole 10 and the third exhaust hole 30 at least partially do not overlap, and the second exhaust hole 20 and the fourth exhaust hole 40 at least partially do not overlap. Fig.11The light emitting element 60 is also shown. Along a direction perpendicular to the plane where the substrate is located, one end of the light emitting element 60 overlaps and is electrically connected to the first electrode 51 , and the other end of the light emitting element 60 overlaps and is electrically connected to the second electrode 52 .

[0091] Fig.11 The diagram shows three first electrodes 51, three second electrodes 52, and three colors of light-emitting elements 60 located in a pixel area Z1. In this embodiment, the first electrode 51 extends along the first direction y, and the first electrode 51 and the second electrode 52 are alternately arranged in the second direction x. Among them, two connecting lines 65 are overlapped and electrically connected with the first electrode 51 below the first electrode 51, and another connecting line 65 is overlapped and electrically connected with the first electrode 51 above the first electrode 51. In application, the connecting line 65 can be appropriately set according to the misalignment relationship between the pixel circuit and the corresponding light-emitting element. According to the wiring requirements, the connecting line 65 can be set to overlap and electrically connect with the first electrode 51 below the first electrode 51, or the connecting line 65 can be set to overlap and electrically connect with the first electrode 51 above the first electrode 51.

[0092] Fig.12 This is another layout design diagram of the first metal layer of a display panel provided by an embodiment of the present invention. Fig.12 The local position in the first metal layer M1 is shown. Fig.12 As shown, the display panel is designed with a second groove 55, and a connecting line 65 is arranged in the second groove 55. The connecting line 65 is used to connect the first electrode 51 and the pixel circuit. The position of the connecting line 65 needs to be determined according to the position of the pixel circuit and the position of the first electrode 51 in the second metal layer M2. The basic design in the first metal layer M1 is that the second exhaust holes 20 are arranged in an array. When the second groove 55 is set in the first metal layer M1, the second groove 55 and the second exhaust hole 20 may meet, causing certain interference to the second exhaust hole 20. Fig.12 The middle area 021 shows that the second exhaust hole 20 is a sawtooth opening, that is, the orthographic projection of the second exhaust hole 20 on the substrate at the position of area 021 is a non-closed figure. The inventor considers that these sawtooth openings will affect the later electrostatic protection and the electrical properties of the entire metal of the first metal layer M1, so a solution for correcting the sawtooth openings is further proposed.

[0093] In some embodiments, Fig.13 A partial schematic diagram of another display panel provided by an embodiment of the present invention, Fig.13 The local position in the first metal layer M1 is shown. Fig.13As shown, the second exhaust hole 20 includes a second sub-exhaust hole 21, the second sub-exhaust hole 21 is adjacent to the second trench 55, and the second sub-exhaust hole 21 is not connected to the second trench 55. The second exhaust hole 20 penetrates the first metal layer M1 in the thickness direction of the first metal layer M1. Fig.13 It can be seen from the top view that the orthographic projection shape of the second sub-exhaust hole 21 on the substrate is a closed figure. The embodiment of the present invention modifies the shape of the second exhaust hole 20 adjacent to the second trench 55 to avoid forming a jagged opening around the second trench 55, thereby avoiding affecting the electrostatic protection capability of the first metal layer M1 and the electrical properties of the entire metal surface, and ensuring the stability of the performance of the first metal layer M1 in transmitting voltage signals.

[0094] like Fig.13 As shown, the second exhaust hole 20 includes a fourth sub-exhaust hole 22, and the area of ​​the fourth sub-exhaust hole 22 is greater than the area of ​​the second sub-exhaust hole 21. The area comparison is defined by the area of ​​the orthographic projection of the exhaust hole on the plane where the substrate is located. In the embodiment of the present invention, the shape of the exhaust hole is modified around the second groove 55 to form the second sub-exhaust hole 21, and the hole area of ​​the second sub-exhaust hole 21 is set to be smaller. When the shape of the exhaust hole is modified, only the shape of the hole is changed, but the position of the exhaust hole in the overall exhaust hole array is not changed. This correction method has little effect on the arrangement array of the second exhaust hole 20. When the second exhaust hole 20 is designed not to overlap with the fourth exhaust hole 40 in the second metal layer M2 in the application, there is no need to change the arrangement method of the fourth exhaust hole 40, and the overall design method is simpler.

[0095] like Fig.13 As shown, the spacing between the second sub-exhaust hole 21 and the second trench 55 is d4, d4 ≥ 3 μm. Such a setting can meet the etching process requirements of the first metal layer M1, ensuring that the second sub-exhaust hole 21 and the second trench 55 in the first metal layer M1 manufactured by the etching process are not connected. Optionally, 15 μm ≥ d4 ≥ 3 μm.

[0096] In some embodiments, 12 μm ≥ d4 ≥ 3 μm.

[0097] In some embodiments, d4 ≥ 5 μm.

[0098] Fig.13 FIG. 2 illustrates a solution for modifying the second vent hole 20 when the second vent hole 20 and the second groove 55 interfere with each other. In other embodiments, as Fig.10As shown, the first exhaust hole 10 includes a first sub-exhaust hole 11, the first sub-exhaust hole 11 is adjacent to the second trench 55, and the first sub-exhaust hole 11 is not connected to the second trench 55. In this way, the interference caused by the first exhaust hole 10 and the second trench 55 can be corrected, and the first exhaust hole 10 is prevented from forming a jagged opening, thereby avoiding affecting the electrostatic protection capability of the first metal layer M1 and the electrical properties of the entire metal.

[0099] Further, such as Fig.10 As shown, the spacing between the first sub-exhaust hole 11 and the second trench 55 is d3, d3 ≥ 3 μm. The size of d3 meets the etching process requirements of the first metal layer M1, ensuring that the first sub-exhaust hole 11 and the second trench 55 in the first metal layer M1 manufactured by the etching process are not connected. Optionally, 15 μm ≥ d3 ≥ 3 μm.

[0100] Furthermore, the first exhaust hole 10 includes a third sub-exhaust hole, and the area of ​​the third sub-exhaust hole is larger than the area of ​​the first sub-exhaust hole. In this way, when the shape of the first exhaust hole around the second trench 55 is modified, only the shape of the hole is changed, but the position of the exhaust hole in the overall exhaust hole array is not changed. This modification method has little effect on the arrangement array of the first exhaust hole 10. When the first exhaust hole 10 is designed not to overlap with the third exhaust hole 30 in the second metal layer M2 in the application, there is no need to change the arrangement method of the third exhaust hole 30, and the overall design method is simpler.

[0101] The display panel provided by the embodiment of the present invention includes a first metal layer M1 and a second metal layer M2, the first metal layer M1 includes a first metal part M11 and a second metal part M12, the first metal part M11 and the second metal part M12 are respectively provided with exhaust holes, and the second metal layer M2 includes a third metal part M21 and a fourth metal part M22, the third metal part M21 and the fourth metal part M22 are respectively provided with exhaust holes. When designing the exhaust holes, the exhaust holes in the first metal part M11 and the exhaust holes in the second metal part M12 can be designed respectively. When the scheme with the connecting line 65 is provided, it is necessary to provide a second groove 55. When the second groove 55 interferes with the exhaust holes, the arrangement of the exhaust holes in the first metal part M11 and the second metal part M12 is not changed as much as possible, but the shape of the exhaust holes is corrected to ensure that the position of the exhaust holes remains unchanged. Such a correction method does not need to change the arrangement of the exhaust holes in the second metal layer M2, and the overall design of the display panel will be relatively simple. In addition, the embodiment of the present invention corrects the shape of the exhaust hole instead of directly removing the exhaust hole that interferes with the second groove 55, thereby ensuring the overall area ratio of the exhaust holes in the first metal layer M1 and avoiding affecting the overall exhaust effect.

[0102] In some embodiments, the area of ​​the first exhaust holes 10 per unit area of ​​the first metal portion M11 in the first metal layer M1 is in a range of 15% to 60%, and / or the area of ​​the second exhaust holes 20 per unit area of ​​the second metal portion M12 in the first metal layer M1 is in a range of 15% to 60%.

[0103] In some embodiments, the area of ​​the first exhaust holes 10 per unit area of ​​the first metal portion M11 in the first metal layer M1 is not less than 35%, and the area of ​​the second exhaust holes 20 per unit area of ​​the second metal portion M12 in the first metal layer M1 is not less than 35%.

[0104] In some embodiments, the area of ​​the third exhaust hole 30 within the unit area of ​​the third metal part M21 in the second metal layer M2 accounts for 15% to 60%, and / or the area of ​​the fourth exhaust hole 40 within the unit area of ​​the fourth metal part M22 in the second metal layer M2 accounts for 15% to 60%.

[0105] In some embodiments, the area of ​​the third exhaust hole 30 per unit area of ​​the third metal portion M21 in the second metal layer M2 is not less than 35%, and / or the area of ​​the fourth exhaust hole 40 per unit area of ​​the fourth metal portion M22 in the second metal layer M2 is not less than 35%.

[0106] In some embodiments, Fig.14A A schematic diagram of another display panel provided by an embodiment of the present invention, Fig. 14B for Fig.14A Enlarged view of the middle area Q1. Fig.14A The local position of the first metal layer M1 is shown, showing the positions of three pixel areas Z1 arranged along the first direction y, and also showing the first exhaust hole 10 and the second exhaust hole 20 in the first metal layer M1, and the connecting line 65. Fig. 14BAs shown, at least one second trench 55 includes a first inner wall 551 extending along a first direction y and a second inner wall 552 extending along a second direction x, and the first inner wall 551 and the second inner wall 552 are connected to form a first corner θ. The first direction y and the second direction x intersect each other. At least one second sub-exhaust hole 21 forms an L-shaped second sub-exhaust hole 21 around the first corner θ. This embodiment provides a correction method for the exhaust hole that interferes with the second trench 55. When the second exhaust hole meets the first corner θ of the second trench 55, it can be designed as an L-shaped second sub-exhaust hole 21. In this way, it is possible to prevent the formation of a jagged opening, avoid affecting the electrostatic protection capability of the first metal layer M1 and the electrical properties of the entire metal. And the position of the second exhaust hole 20 in the overall exhaust hole array is not changed. This correction method has little effect on the arrangement array of the second exhaust hole 20. When the second exhaust hole 20 is designed not to overlap with the fourth exhaust hole 40 in the second metal layer M2 in the application, it is not necessary to change the arrangement method of the fourth exhaust hole 40, and the overall design method is simpler.

[0107] In some embodiments, the first exhaust hole 10 includes a first sub-exhaust hole, and the first sub-exhaust hole is adjacent to the second trench 55. At least one first sub-exhaust hole forms an L-shaped first sub-exhaust hole around the first corner θ, which is not illustrated in the figure. This embodiment can correct the first exhaust hole 10 that meets the first corner θ to prevent the formation of a jagged opening, and can make the overall design of the first metal layer M1 and the second metal layer M2 simpler.

[0108] In addition, if Fig. 14B It can be seen from the top view that the corners of the second exhaust hole 20 are chamfered, that is, the corners of the second exhaust hole 20, which is approximately rectangular, are not right angles. Such a design can improve the electrostatic protection performance of the first metal layer M1.

[0109] In the embodiment of the present invention, at least one of the first exhaust hole 10, the third exhaust hole 30, and the fourth exhaust hole 40 can be similar to Fig. 14B The design mode of the second exhaust hole 20 with a chamfered middle corner.

[0110] In some embodiments, Fig.15 for Fig.10 A local enlarged view of the Q2 position in the middle area, such as Fig.15As shown, the first metal layer M1 includes at least one first chamfer α, the first chamfer α includes a fourth side 71, a fifth side 72 and a sixth side 73, the sixth side 73 is connected between the fourth side 71 and the fifth side 72, the fourth side 71 extends along the first direction y, and the fifth side 72 extends along the second direction x; wherein the fourth side 71, the fifth side 72 and the sixth side 73 form a corner of the second trench 55. The design of the first chamfer α in this embodiment can prevent static electricity concentration, improve the electrostatic protection performance of the first metal layer M1, and ensure that the electrical performance of the entire metal of the first metal layer M1 is reliable.

[0111] Fig.15 The sixth side 73 is shown as a straight line. In practice, the first chamfer α is formed by an etching process. The sixth side 73 in the first chamfer α can be approximately a straight line or an arc.

[0112] like Fig.15 As shown, at least one connecting line 65 in the display panel includes a first section 651, a second section 652 and a third section 653, the first section 651 extends along the first direction y, the second section 652 extends along the second direction x, the third section 653 is connected between the first section 651 and the second section 652, the second direction x and the first direction y intersect each other; the extension direction of the third section 653 intersects the first direction y and the second direction x. In this embodiment, the corner of at least one connecting line 65 is formed into a chamfered shape, that is, a tip is avoided at the corner position. In this way, the existence of a tip on the connecting line 65 can prevent static electricity concentration, improve the electrostatic protection performance of the connecting line 65, and ensure the reliability of the electrical performance of the signal transmission.

[0113] Based on the same inventive concept, an embodiment of the present invention further provides a display device, Fig.16 A schematic diagram of a display device provided by an embodiment of the present invention is shown in FIG. Fig.16 As shown, the display device includes a display panel 100 provided by any embodiment of the present invention. The structure of the display panel has been described in the above embodiments and will not be repeated here. The display device provided by the embodiment of the present invention can be, for example, a mobile phone, a tablet, a computer, a television, a smart wearable product, and other electronic devices with display functions. The display device provided by the embodiment of the present invention can also be a transparent display device, such as a transparent display window; it can also be a spliced ​​display device, such as a large screen in a conference room, a large screen in an exhibition hall, etc.

[0114] In some embodiments, Fig.17 A schematic diagram of another display device provided by an embodiment of the present invention, such as Fig.17As shown, a spliced ​​display device 1000 is illustrated, and the display device 1000 includes two display panels 100 spliced ​​together. The display panel 100 is one provided by any embodiment of the present invention. The spliced ​​display device provided by the embodiment of the present invention includes a row and b column, a*b display panels in total. a and b are both positive integers, and a and b are not 1 at the same time.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that: The display panel includes a substrate and a first metal layer located on one side of the substrate, wherein the first metal layer includes a first metal portion and a second metal portion connected to each other; The first metal part includes a plurality of first exhaust holes, and the second metal part includes a plurality of second exhaust holes, wherein an arrangement of the plurality of first exhaust holes is different from an arrangement of the plurality of second exhaust holes.

2. The display panel according to claim 1, characterized in that: The second metal portion at least partially surrounds the first metal portion.

3. The display panel according to claim 1, characterized in that: The display panel includes a pixel area and a non-pixel area, at least a portion of the first metal portion is located in the pixel area, the pixel area includes a light emitting element, and the second metal portion is located in the non-pixel area.

4. The display panel according to claim 1, characterized in that: A plurality of the first exhaust holes are arranged along a first direction, and a plurality of the first exhaust holes are arranged along a second direction, and the first direction intersects with the second direction; A plurality of the second exhaust holes are arranged along the first direction, and a plurality of the second exhaust holes are arranged along the second direction; Wherein, in the first direction, the pitch between two adjacent first exhaust holes is different from the pitch between two adjacent second exhaust holes; and / or, in the second direction, the pitch between two adjacent first exhaust holes is different from the pitch between two adjacent second exhaust holes.

5. The display panel according to claim 4, characterized in that: In the first direction, the width of the first exhaust hole is equal to the width of the second exhaust hole, and the spacing between two adjacent first exhaust holes is different from the spacing between two adjacent second exhaust holes; And / or, in the second direction, the width of the first exhaust hole is equal to the width of the second exhaust hole, and the spacing between two adjacent first exhaust holes is different from the spacing between two adjacent second exhaust holes.

6. The display panel according to claim 1, characterized in that: A plurality of the first exhaust holes are arranged along a first direction, and a plurality of the first exhaust holes are arranged along a second direction, and the first direction and the second direction intersect; a plurality of the second exhaust holes are arranged along the first direction, and a plurality of the second exhaust holes are arranged along the second direction; A pitch of the first exhaust holes in the first direction is not equal to a pitch of the first exhaust holes in the second direction, and / or a pitch of the second exhaust holes in the first direction is equal to a pitch of the second exhaust holes in the second direction.

7. The display panel according to claim 1, characterized in that: A plurality of the first exhaust holes are arranged into a first hole column along a first direction, and a plurality of the first exhaust holes are arranged into a first hole row along a second direction, two adjacent first exhaust holes in the first hole row belong to two adjacent first hole columns, and the first direction intersects with the second direction; A plurality of the second exhaust holes are arranged into second hole columns along the first direction, and a plurality of the second exhaust holes are arranged into second hole rows along the second direction; at least one of the second hole columns is spaced between two adjacent second exhaust holes in at least one of the second hole rows, and / or at least one of the second hole rows is spaced between two adjacent second exhaust holes in at least one of the second hole columns.

8. The display panel according to claim 1, characterized in that: A plurality of the first exhaust holes are arranged into a first hole row along a first direction, and three adjacent first exhaust holes belonging to two adjacent first hole rows form a first triangle; the longest side of the first triangle is the first side, and an extending direction of the first side intersects the first direction and the second direction, and the first direction and the second direction intersect each other; A plurality of the second exhaust holes are arranged into a second hole column along the first direction, and three adjacent second exhaust holes belonging to two adjacent second hole columns form a second triangle, the longest side of the second triangle is the second side, and the second side extends along the first direction; and / or, a plurality of the second exhaust holes are arranged into a second hole row along the second direction, and three adjacent second exhaust holes belonging to two adjacent second hole rows form a third triangle, the longest side of the third triangle is the third side, and the third side extends along the second direction.

9. The display panel according to claim 1, characterized in that: The arrangement density of the first exhaust holes is smaller than the arrangement density of the second exhaust holes.

10. The display panel according to claim 1, characterized in that: The display panel further includes a second metal layer located on one side of the substrate, wherein the second metal layer and the first metal layer are located in different layers; The second metal layer includes a third metal portion, the third metal portion includes a plurality of third exhaust holes; along a direction perpendicular to the plane where the substrate is located, the third metal portion overlaps with the first metal portion, and the third exhaust holes and the first exhaust holes at least partially do not overlap; And / or, the second metal layer includes a fourth metal part, the fourth metal part includes a plurality of fourth exhaust holes; along a direction perpendicular to the plane of the substrate, the fourth metal part overlaps with the second metal part, and the fourth exhaust holes and the second exhaust holes at least partially do not overlap.

11. The display panel according to claim 10, characterized in that: A plurality of the fourth exhaust holes are arranged into a third hole column along the first direction, and a plurality of the fourth exhaust holes are arranged into a third hole row along the second direction, and the first direction and the second direction intersect each other; At least one of the third hole columns is spaced between two adjacent fourth exhaust holes in at least one of the third hole rows, and at least one of the third hole columns is spaced between two adjacent fourth exhaust holes in the third hole columns; The orthographic projection of at least one of the fourth exhaust holes on the substrate is located within a region enclosed by the orthographic projections of four adjacent second exhaust holes on the substrate.

12. The display panel according to claim 1, characterized in that: The display panel further comprises a second metal layer located on one side of the substrate, the second metal layer and the first metal layer are located on different layers; the second metal layer comprises a third metal portion, and the third metal portion overlaps the first metal portion along a direction perpendicular to the plane where the substrate is located; the third metal portion comprises a third exhaust hole; The third metal part includes a first electrode and a second electrode. The third metal part has a first trench. The first electrode is located in the first trench. The second electrode shares a side wall with at least one of the first trenches.

13. The display panel according to claim 12, characterized in that: The display panel includes a light emitting element; Along a direction perpendicular to the plane where the substrate is located, one end of the light-emitting element overlaps with the first electrode, and the other end overlaps with the second electrode, and the light-emitting element does not overlap with the third exhaust hole.

14. The display panel according to claim 12, characterized in that: A first gap is formed between the first electrode and the side wall of the first trench. In a direction perpendicular to the plane where the substrate is located, the first exhaust hole and the first gap do not overlap.

15. The display panel according to claim 12, characterized in that: In the first direction, the distance between two adjacent first exhaust holes is d1, and the width of the third exhaust hole is d2; d1>d2.

16. The display panel according to claim 12, characterized in that: The first electrode and at least one of the second electrodes respectively include the third exhaust hole; The width of the second electrode between two adjacent first grooves in the second direction is greater than the width of the first exhaust hole in the second direction, and / or the width of the first electrode in the second direction is greater than the width of the first exhaust hole in the second direction.

17. The display panel according to claim 12, characterized in that: The second metal layer includes a fourth metal portion, the fourth metal portion is connected to the third metal portion and at least partially surrounds the third metal portion; The fourth metal portion overlaps with the second metal portion along a direction perpendicular to the plane where the substrate is located; the fourth metal portion includes a plurality of fourth exhaust holes.

18. The display panel according to claim 17, characterized in that: An area of ​​at least one of the third exhaust holes is smaller than an area of ​​the fourth exhaust hole.

19. The display panel according to claim 1, characterized in that: The display panel further comprises a second metal layer located on one side of the substrate, the second metal layer and the first metal layer are located on different layers; the second metal layer comprises a fourth metal portion, and the fourth metal portion overlaps the second metal portion in a direction perpendicular to the plane where the substrate is located; the fourth metal portion comprises a plurality of fourth exhaust holes; A plurality of the fourth exhaust holes are arranged into a third hole column along the first direction, and a plurality of the fourth exhaust holes are arranged into a third hole row along the second direction, and the first direction and the second direction intersect each other; There is at least one third hole column between two adjacent fourth exhaust holes in the third hole row, and there is at least one third hole row between two adjacent fourth exhaust holes in the third hole column; The orthographic projection of at least one of the fourth exhaust holes on the substrate is located within a region enclosed by the orthographic projections of four adjacent second exhaust holes on the substrate.

20. The display panel according to claim 1, characterized in that: The display panel comprises a connection line, a pixel circuit and a light-emitting element located on one side of the substrate; one end of the connection line is connected to the pixel circuit, and the other end is connected to the light-emitting element; the connection line is in the same layer as the first metal layer; The first metal layer includes a second trench, and the connecting line is located in the second trench.

21. The display panel according to claim 20, characterized in that: The light-emitting element includes a first light-emitting element, and the pixel circuit includes a first pixel circuit; the orthographic projection of the first light-emitting element on the substrate and the orthographic projection of the first pixel circuit on the substrate are misaligned in a first direction and / or a second direction; The first pixel circuit is connected to the first light emitting element through the connecting line.

22. The display panel according to claim 20, characterized in that: The display panel includes a second metal layer located on one side of the substrate, the second metal layer and the first metal layer are located in different layers; the second metal layer includes a third metal portion, and along a direction perpendicular to the plane where the substrate is located, the third metal portion overlaps with the first metal portion; The third metal part includes a first electrode and a first trench, wherein the first electrode is located in the first trench; One end of the connecting line is connected to the first electrode through a via hole.

23. The display panel according to claim 20, characterized in that: The first exhaust hole includes a first sub-exhaust hole, the first sub-exhaust hole is adjacent to the second trench, and the first sub-exhaust hole is not connected to the second trench; And / or, the second exhaust hole includes a second sub-exhaust hole, the second sub-exhaust hole is adjacent to the second groove, and the second sub-exhaust hole is not connected to the second groove.

24. The display panel according to claim 23, characterized in that: The first exhaust hole includes a third sub-exhaust hole, and the area of ​​the third sub-exhaust hole is larger than the area of ​​the first sub-exhaust hole; and / or the second exhaust hole includes a fourth sub-exhaust hole, and the area of ​​the fourth sub-exhaust hole is larger than the area of ​​the second sub-exhaust hole.

25. The display panel according to claim 23, characterized in that: The distance between the first sub-exhaust hole and the second groove is d3, d3≥3 μm; and / or the distance between the second sub-exhaust hole and the second groove is d4, d4≥3 μm.

26. The display panel according to claim 23, characterized in that: At least one of the second grooves includes a first inner wall extending along a first direction and a second inner wall extending along a second direction, the first inner wall and the second inner wall are connected to form a first corner, and the second direction and the first direction intersect each other; At least one of the first sub-exhaust holes forms an L-shaped first sub-exhaust hole around the first corner; and / or at least one of the second sub-exhaust holes forms an L-shaped second sub-exhaust hole around the first corner.

27. The display panel according to claim 20, characterized in that: The first metal layer includes at least one first chamfer, the first chamfer includes a fourth side, a fifth side and a sixth side, the sixth side is connected between the fourth side and the fifth side, the fourth side extends along a first direction, the fifth side extends along a second direction, and the second direction and the first direction intersect each other; The fourth side, the fifth side and the sixth side form a corner of the second groove.

28. The display panel according to claim 20, characterized in that: At least one of the connecting lines includes a first section, a second section and a third section, the first section extends along a first direction, the second section extends along a second direction, the third section is connected between the first section and the second section, the second direction and the first direction intersect each other; the extension direction of the third section intersects the first direction and the second direction.

29. A display device, characterized in that: A display panel comprising any one of claims 1 to 28.

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