Display panel and display device

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a substrate, a driving array layer and a light-emitting device layer, the driving array layer is located on the substrate, the driving array layer comprises a driving unit and a wire, the wire comprises a first sub-wire and a second sub-wire which are arranged in different layers and connected, the light-emitting device layer is located on the substrate and comprises a light-emitting unit, and the first sub-wire and the second sub-wire are arranged in different layers. The driving unit is connected with the light-emitting unit through the first light-transmitting sub-line and the second light-transmitting sub-line. According to the embodiment of the invention, the circuit reliability can be improved, the reliability of connection between the driving unit and the light-emitting unit is improved, and the dark spot occurrence rate is reduced.

Description

Technical Field

[0001] This application relates to the field of display technology, and more specifically, to a display panel and a display device. Background Technology

[0002] Organic light-emitting diode (OLED) display technology is considered one of the most promising next-generation display technologies. Compared to liquid crystal displays, OLED displays offer advantages such as lower energy consumption, lower cost, self-emissiveness, wide viewing angles, and faster response times.

[0003] In related technologies, the display panel includes a light-transmitting display area. Under-display functional devices are integrated on the backlight surface of the display panel in the light-transmitting display area. Light can pass through the display panel in the light-transmitting display area to reach the under-display functional devices and realize their functions. On the other hand, the display panel in the light-transmitting display area can also emit light normally to realize the display function and ensure that the display panel has a high screen-to-body ratio.

[0004] However, the display performance of the display panel still needs to be improved. Summary of the Invention

[0005] In order to overcome the technical problems mentioned in the above technical background, this application provides a display panel and a display device, which aims to improve the performance of the display panel.

[0006] This application embodiment provides a display panel, the display panel including:

[0007] Substrate;

[0008] A driving array layer, located on the substrate, includes driving units and traces. The traces include a first sub-line and a second sub-line that are disposed in different layers and connected.

[0009] The light-emitting device layer is located on the substrate. The light-emitting device layer includes light-emitting units, and the driving unit is connected to the light-emitting units via a first sub-line and a second sub-line.

[0010] Optionally, the driving unit includes a metal oxide transistor, and the first sub-line is disposed on the same layer as the active layer of the metal oxide transistor.

[0011] Optionally, the active layer of the metal-oxide transistor includes a channel region, and source and drain regions located on both sides of the channel region; at least a portion of the conductivity of the first sub-line is greater than or equal to the conductivity of the source and / or drain regions of the active layer of the metal-oxide transistor.

[0012] Optionally, at least a portion of the first sub-line has an ion doping concentration greater than or equal to the ion doping concentration of the source and / or drain regions of the active layer of the metal-oxide transistor.

[0013] Optionally, in at least a portion of the driving units, each driving unit is connected to a light-emitting unit in sequence via a first sub-line and a second sub-line.

[0014] Optionally, in at least a portion of the driving units, each driving unit is connected to multiple light-emitting units.

[0015] Optionally, in at least a portion of the driving units, each driving unit is connected to multiple second sub-lines via a first sub-line, and each second sub-line is connected to a light-emitting unit.

[0016] Optionally, the driving array layer includes a first metal oxide layer, a first insulating layer and a second metal oxide layer stacked sequentially, a first sub-line located in the first metal oxide layer and a second sub-line located in the second metal oxide layer, the first insulating layer being provided with a first via, and at least a portion of the first sub-lines, each first sub-line being connected to multiple second sub-lines through the same first via;

[0017] Optionally, the first via is located at the junction of multiple second sub-lines.

[0018] Optionally, the wiring may also include a third sub-line, which is set on the same layer as the second sub-line;

[0019] The driving array layer includes a first metal oxide layer, a first insulating layer and a second metal oxide layer stacked in sequence. The first sub-line is located in the first metal oxide layer and the second sub-line is located in the second metal oxide layer. The first insulating layer is provided with a first via. Each first sub-line is connected to a third sub-line through the first via. The third sub-line is connected to multiple second sub-lines.

[0020] The first insulating layer includes at least one of a gate insulating layer, an interlayer insulating layer, and a planarization layer.

[0021] Optionally, the driving array layer includes a first metal oxide layer, a first insulating layer, and a second metal oxide layer stacked sequentially. A first sub-line is located on the first metal oxide layer, and a second sub-line is located on the second metal oxide layer. The first insulating layer has a first via, through which the first sub-line is connected to the second sub-line.

[0022] The driving array layer also includes a second insulating layer, which is located between the light-emitting device layer and the second metal oxide layer. The second insulating layer is provided with a second via, and the second sub-line is connected to the light-emitting unit through the second via.

[0023] Optionally, the first insulating layer includes a first sub-layer and a second sub-layer, the first sub-layer being located between the first metal oxide layer and the second sub-layer; the first via includes a first sub-hole and a second sub-hole, the first sub-layer having the first sub-hole and the second sub-layer having the second sub-hole, the first sub-hole being located between the second sub-hole and the first sub-wire.

[0024] The display panel also includes a first connecting portion, at least a portion of which is located in a first sub-hole and connected to a first sub-line; a second sub-line is connected to the first connecting portion through a second sub-hole.

[0025] Optionally, the conductivity of the first connecting part is greater than the conductivity of the second sub-wire, and the conductivity of the first connecting part is greater than the conductivity of the first sub-wire.

[0026] The light transmittance of the second sub-wire is greater than that of the first connecting part, and the light transmittance of the first sub-wire is greater than that of the first connecting part.

[0027] Optionally, the driving unit includes a transistor, and the first connection portion is disposed on the same layer as the source or drain of the transistor;

[0028] Optionally, the first connecting part may include a metallic material;

[0029] Optionally, the diameter of the first via is greater than or equal to 1.5 μm and less than or equal to 3.5 μm;

[0030] Optionally, the first metal oxide layer, the first insulating layer, the second metal oxide layer, the second insulating layer, and the light-emitting device layer are stacked sequentially in a direction away from the substrate.

[0031] Optionally, in the same wiring, the first sub-line and the second sub-line are connected in series; the driving unit is connected to the light-emitting unit in sequence via the first sub-line and the second sub-line;

[0032] Optionally, the length of the first sub-line is L1, the length of the second sub-line is L2, and the ratio of the length of the first sub-line to the length of the second sub-line, L1 / L2, is greater than or equal to 1:9 and less than or equal to 9:1.

[0033] Optionally, the first sub-line includes a light-transmitting and conductive material, and the second sub-line includes a light-transmitting and conductive material;

[0034] Optionally, the display panel includes a first display area, which includes a light-transmitting area and a light-emitting area, with the light-emitting unit located in the light-emitting area, at least a portion of the first sub-line located in the light-transmitting area, and / or, at least a portion of the second sub-line located in the light-transmitting area;

[0035] Optionally, the first and second sub-wires may be made of different materials.

[0036] Optionally, the second sub-line includes at least one of indium tin oxide, tin oxide, indium zinc oxide, indium titanium zinc oxide, and indium oxide;

[0037] Optionally, the width of the first sub-line is greater than or equal to 1µm and less than or equal to 10µm;

[0038] And / or, the width of the second sub-line is greater than or equal to 1µm and less than or equal to 10µm;

[0039] Optionally, the orthogonal projection of the light-emitting unit on the substrate is located outside the orthogonal projection of the driving unit on the substrate;

[0040] Optionally, the display panel also includes a second display area and a transition display area, wherein the light transmittance of the light-transmitting area is greater than that of the second display area, the transition display area is located between the first display area and the second display area, and the driving unit is located in the transition display area.

[0041] Optionally, the first sub-line and the second sub-line can be connected in parallel within the same routing.

[0042] Optionally, the first sub-line includes a first part, a second part, and a third part connected in sequence, the two ends of the second sub-line are connected in parallel with the second part of the first sub-line through a first via, the first part of the first sub-line is connected to the driving unit, and the third part of the first sub-line is connected to the light-emitting unit.

[0043] Optionally, the width of the second portion of the first sub-line is less than the width of at least one of the first portion of the first sub-line, the third portion of the first sub-line, and the second sub-line;

[0044] Alternatively, the second sub-line includes a first part, a second part, and a third part connected in sequence, with both ends of the first sub-line connected in parallel to the second part of the second sub-line through a first via; the first part of the second sub-line is connected to the driving unit, and the second part of the second sub-line is connected to the light-emitting unit.

[0045] Optionally, the width of the second portion of the second sub-line is less than the width of at least one of the first portion of the second sub-line, the third portion of the second sub-line, and the first sub-line.

[0046] This application also provides a display device, including the display panel provided in any embodiment of this application.

[0047] The display panel in this embodiment includes a driving unit, wiring, and a light-emitting unit. The wiring includes a first sub-line and a second sub-line that are configured and connected in different layers. The driving unit is connected to the light-emitting unit through the first sub-line and the second sub-line that are configured and connected in different layers, which can improve the reliability of the circuit, improve the reliability of the connection between the driving unit and the light-emitting unit, and reduce the occurrence rate of dark spots. Attached Figure Description

[0048] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 This is a top view of a display panel provided in an embodiment of the present application;

[0050] Figure 2 This is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of this application;

[0051] Figure 3 A partial cross-sectional schematic diagram of another display panel provided in an embodiment of this application;

[0052] Figure 4 A schematic diagram illustrating the connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0053] Figure 5 This is a schematic diagram illustrating another connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0054] Figure 6 This is a schematic diagram illustrating another connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0055] Figure 7 This is a schematic diagram illustrating another connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0056] Figure 8 This is a schematic diagram illustrating another connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0057] Figure 9 This is a schematic diagram illustrating another connection between a driving unit and a light-emitting unit provided in an embodiment of this application;

[0058] Figure 10 This is a partial top view of a display panel provided in an embodiment of this application;

[0059] Figure 11 This is a partial top view of another display panel provided in an embodiment of this application.

[0060] Explanation of reference numerals in the attached figures:

[0061] 100: Display panel; First display area: 101; Light-transmitting area: 101a; Light-emitting area: 101b; Second display area: 102; Transition display area: 103;

[0062] Drive units: 10;

[0063] Line routing: 20; First sub-line: 21; Second sub-line: 22; Third sub-line: 23;

[0064] Light-emitting unit: 30; First electrode: 31; Light-emitting functional layer: 32; Second electrode: 33;

[0065] First via: 40; First sub-via: 41; Second sub-via: 42; Second via: 50;

[0066] First connecting part: 60;

[0067] Metal-oxide transistor: T1; Active layer: 302; Source: 304; Drain: 305; First gate: 303; Second gate: 301;

[0068] Substrate: 201; First film layer: 1; Second film layer: 2; First insulating layer: 3; Gate insulating layer: 203; Interlayer insulating layer: 204; First organic insulating layer: 205; Second insulating layer: 206; Pixel definition layer: 207; Support pillar: 208; Third insulating layer: 202. Detailed Implementation

[0069] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0070] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0071] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. It should be noted that, unless otherwise specified, different features in the embodiments of this application can be combined with each other.

[0072] For ease of understanding, the accompanying diagram shows the mutually orthogonal X-axis, Y-axis, and Z-axis. The direction along the X-axis is called the X-direction, the direction along the Y-axis is called the Y-direction, and the direction along the Z-axis is called the Z-direction. The Z-direction is the normal direction relative to the plane containing the X and Y directions. Furthermore, a view where various elements are observed parallel to the plane containing the X and Y directions is called a top view. Alternatively, the planes in the X and Y directions can be planes parallel to the display surface of the display panel, and the Z-direction can be a direction parallel to the thickness direction of the display panel.

[0073] For certain elements, terms such as "above" or "over" are sometimes used when describing the position of an element located in the Z direction, and "below" or "under" are used when describing the position of an element located in the opposite direction. Furthermore, when using terms such as "above," "over," "below," "under," or "relative" to define the positional relationship between two elements, this includes not only the state where the two elements are directly adjacent, but also the state where the two elements are separated by gaps or other elements. Additionally, the terms "first," "second," and "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. At least one may include one or more. At least part may include part or all. The first direction and the second direction intersect, for example, they may be perpendicular. At least one may include one or more. The connection may include a direct connection or an indirect connection.

[0074] This application provides a display panel. Figure 1 This is a top view of a display panel provided in an embodiment of this application. Figure 2 This is a partial cross-sectional schematic diagram of a display panel provided in an embodiment of this application. See also... Figure 1 and Figure 2 The display panel 100 includes: a substrate 201, a driving array layer, and a light-emitting device layer.

[0075] The driving array layer is located on the substrate 201. The driving array layer includes driving cells 10 and traces 20. The traces include a first sub-line 21 and a second sub-line 22 that are disposed on different layers and connected.

[0076] The light-emitting device layer is located on the substrate 201. For example, the light-emitting device layer is located on the side of the driving array layer away from the substrate 201. The light-emitting device layer includes a light-emitting unit 30 (which may be a first light-emitting unit). The driving unit 10 is connected to the light-emitting unit 30 via a first sub-line 21 and a second sub-line 22.

[0077] For example, the driving unit 10 (which may be the first driving unit) may be a pixel circuit. The driving unit may include multiple transistors and at least one capacitor. The driving unit 10 may generate a driving current to drive the light-emitting unit 30 to emit light. Optionally, the operating principle and circuit structure of the pixel circuit can vary, and the pixel circuit may be a 2T1C, 4T1C, 7T1C, 7T2C, 8T1C, or 8T2C circuit structure, etc. The driving unit may include driving transistors and switching transistors. The transistor T1 connected to the light-emitting unit may be a driving transistor or a switching transistor. The light-emitting unit may include a light-emitting diode, such as an organic light-emitting diode. For example, the orthogonal projection of the light-emitting unit 30 on the substrate 201 is outside the orthogonal projection of the driving unit 10 on the substrate 201, that is, the orthogonal projection of the light-emitting unit 30 on the substrate 201 does not overlap with the orthogonal projection of the driving unit 10 on the substrate 201.

[0078] The distance between the driving unit 10 and the light-emitting unit 30 that need to be connected is relatively far, requiring a longer trace 20 for connection. Alternatively, the distance between the components in the driving unit 10 that need to be connected to the light-emitting unit 30 and the light-emitting unit 30 is relatively far, requiring a longer trace 20 for connection. In related technologies, the traces are set as long conductive traces in the same film layer. However, the middle part of the long conductive trace tends to become thinner during photolithography, increasing the probability of breakage during etching. Breakage leads to abnormal light emission from the light-emitting unit, resulting in dark spots in the first display area. In this embodiment, the trace 20 is set as multiple sub-lines that are set in different layers and connected, which helps to improve the reliability of the circuit.

[0079] For example, in the same trace, the first sub-line 21 and the second sub-line 22 can be connected in series. Since the first sub-line 21 and the second sub-line 22 are relatively short, when fabricating them using processes such as photolithography, the middle portion of the first sub-line 21 and the second sub-line 22 will not become very thin, making breakage less likely. Compared to technical solutions that increase the width of the trace to reduce the risk of breakage, the embodiments of this application arrange the traces in layers and segments connected in series, which can improve light transmittance.

[0080] For example, in the same wiring, the first sub-line 21 and the second sub-line 22 can be connected in parallel. For instance, the first sub-line 21 and the second sub-line 22 have different lengths, and the shorter one is connected in parallel to at least the vulnerable area of ​​the longer one. Therefore, even if the longer one of the first sub-line 21 and the second sub-line 22 breaks, while the shorter one does not break, the shorter one can connect the two broken parts of the longer one, thereby ensuring the reliability of the connection between the driving unit 10 and the light-emitting unit 30. Alternatively, in the same wiring, the first sub-line 21 and the second sub-line 22 can be connected in parallel and have equal lengths.

[0081] The display panel in this embodiment includes a driving unit, wiring, and a light-emitting unit. The wiring includes a first sub-line and a second sub-line that are configured and connected in different layers. The driving unit is connected to the light-emitting unit through the first sub-line and the second sub-line that are configured and connected in different layers, which can improve the reliability of the circuit, improve the reliability of the connection between the driving unit and the light-emitting unit, and reduce the occurrence rate of dark spots.

[0082] For example, the display panel 100 includes a first display area 101, which includes a light-emitting area 101b and a light-transmitting area 100a. The light-emitting unit 30 is located in the light-emitting area 101b, at least a portion of the first sub-line 21 is located in the light-transmitting area 100a, and / or at least a portion of the second sub-line 22 is located in the light-transmitting area 100a.

[0083] The first display area 101 can be a light-transmitting display area. The light transmittance of the light-emitting area 101b can be less than that of the light-transmitting area 100a. At least one of the photosensitive elements, such as a camera and a fingerprint recognition module, can receive light from the light-transmitting area 100a. The higher the light transmittance of the light-transmitting area 100a, the better the performance of the photosensitive elements, such as the camera and the fingerprint recognition module. For example, the higher the light transmittance of the light-transmitting area 100a, the better the shooting effect of the camera and the better the fingerprint recognition effect of the fingerprint recognition module.

[0084] For example, trace 20 may include a light-transmitting conductive material. For example, first sub-line 21 may include a light-transmitting conductive material, and first sub-line 21 may be a first light-transmitting sub-line. For example, second sub-line 22 may include a light-transmitting conductive material, and second sub-line 22 may be a second light-transmitting sub-line. The light-transmitting conductive material in first sub-line 21 and second sub-line 22 may be different or the same. First sub-line 21 and second sub-line 22 are disposed in different layers, i.e., located in different film layers. For example, an insulating layer is disposed between the conductive layer where first sub-line 21 is located and the conductive layer where second sub-line 22 is located, and the insulating layer has vias, through which first sub-line 21 can be connected to second sub-line 22. Optionally, the materials of first sub-line 21 and second sub-line 22 are different. Optionally, second sub-line 22 includes at least one of indium tin oxide (ITO), tin oxide (SnO), indium zinc oxide (IZO), indium titanium zinc oxide (ITZO), and indium oxide (InO).

[0085] Optionally, the driving unit 10 includes a metal-oxide-semiconductor transistor T1. The metal-oxide-semiconductor transistor T1 may include a gate, an active layer, etc. The active layer may include a channel region, a source region and a drain region located on both sides of the channel region. The gate and the channel region are stacked along the thickness direction Z of the display panel.

[0086] Optional, see Figure 2The gate of the metal-oxide transistor T1 may include a first gate 303 and a second gate 301. The metal-oxide transistor T1 is located on opposite sides of the active layer along the thickness direction Z of the display panel. The first gate 303 may be a top gate, and the second gate 301 may be a bottom gate. The first gate 303 may be connected to the source of the metal-oxide transistor T1.

[0087] Optional, Figure 3 A partial cross-sectional schematic diagram of another display panel provided in an embodiment of this application can be found in [reference needed]. Figure 3 The second gate 301 can be connected to the source of the metal-oxide transistor T1.

[0088] In some embodiments, the driving unit 10 further includes a polysilicon transistor. For example, the display panel includes at least two active layers, wherein the material of at least one active layer includes a metal oxide, such as indium gallium zinc oxide (IGZO), and the material of at least one active layer includes polysilicon.

[0089] In some embodiments, the driving unit 10 includes only metal oxide transistors and does not include polysilicon transistors. For example, the display panel includes only one active layer. The material of the active layer includes metal oxides, such as at least one of indium gallium zinc oxide (IGZO), indium zinc oxide (IZO), indium gallium oxide (IGO), indium oxide (InO), zinc oxide (ZnO), indium gallium zinc tin oxide (IGZTO), etc.

[0090] Optionally, the first sub-line 21 is disposed on the same layer as the active layer of the metal-oxide-semiconductor (MOS) transistor. The active layer of the MOS transistor is made of a light-transmitting material. Since the first sub-line 21 and the active layer of the MOS transistor are disposed on the same layer and made of the same material, for example, the first sub-line 21 and the active layer of the MOS transistor can be fabricated simultaneously using the same process. This can be achieved by patterning the active layer, thereby simplifying the process and ensuring the light transmittance of the first sub-line 21.

[0091] Optionally, the conductivity of at least a portion of the first sub-line 21 may be greater than the conductivity of the source and / or drain regions of the active layer of the metal-oxide-semiconductor transistor T1. This configuration reduces the impedance of the first sub-line 21, improving the connection between the driving unit 10 and the light-emitting unit 30, thereby enhancing the display effect. The conductivity of the source and / or drain regions of the active layer of the metal-oxide-semiconductor transistor T1 may be greater than the conductivity of the channel region of the active layer of the metal-oxide-semiconductor transistor T1. Optionally, the ion doping concentration of at least a portion of the first sub-line 21 may be greater than the ion doping concentration of the source and / or drain regions of the metal-oxide-semiconductor transistor T1, so that the conductivity of at least a portion of the first sub-line 21 is greater than the conductivity of the source and / or drain regions of the metal-oxide-semiconductor transistor T1. In the active layer, regions with higher ion doping concentrations have higher conductivity. The ion doping concentration of the source and / or drain regions of the active layer of the metal-oxide-semiconductor transistor T1 may be greater than the ion doping concentration of the channel region of the active layer of the metal-oxide-semiconductor transistor T1. The doped ions may include B or P.

[0092] Optionally, the conductivity of at least a portion of the first sub-line 21 may be equal to the conductivity of the source and / or drain regions of the active layer of the metal-oxide-semiconductor transistor T1. Optionally, the ion doping concentration of at least a portion of the first sub-line 21 may be equal to the ion doping concentration of the source and / or drain regions of the metal-oxide-semiconductor transistor T1. This configuration simplifies the manufacturing process.

[0093] For example, there may be one first sub-line 21 connected to the same drive unit 10, and / or one second sub-line 22 connected to the same drive unit 10. This arrangement reduces the number of vias required to connect the first sub-line 21 and the second sub-line 22, which helps to improve light transmittance and increase the light-transmitting area.

[0094] Optional, Figure 4 A schematic diagram illustrating the connection between a driving unit and a light-emitting unit provided in an embodiment of this application can be found here. Figure 4 There can be multiple first sub-lines 21 connected to the same drive unit 10, and / or multiple second sub-lines 22 connected to the same drive unit 10. Optionally, the first sub-lines 21 and second sub-lines 22 connected to the same drive unit 10 are connected alternately. This configuration can reduce the length of the first sub-lines 21 and second sub-lines 22, thereby reducing the probability of wire breakage.

[0095] Optionally, at least two first sub-lines 21 connected to the same drive unit 10 are located on different conductive layers or on the same conductive layer.

[0096] Optionally, at least two second sub-lines 22 connected to the same drive unit 10 are located on different conductive layers or on the same conductive layer.

[0097] Optional, Figure 5For another schematic diagram of the connection between the driving unit and the light-emitting unit provided in the embodiments of this application, please refer to... Figure 5 In at least a portion of the driving units 10, each driving unit 10 is sequentially connected to a light-emitting unit 30 via a first sub-line 21 and a second sub-line 22. That is, in at least a portion of the driving units 10, the driving unit 10 and the light-emitting unit 30 are arranged in a one-to-one correspondence.

[0098] Optional, Figure 6 For another schematic diagram of the connection between the driving unit and the light-emitting unit provided in the embodiments of this application, please refer to... Figure 6 In at least a portion of the driving units 10, each driving unit 10 is connected to multiple light-emitting units 30. That is, in at least a portion of the driving units 10, each driving unit 10 drives multiple light-emitting units 30, thereby reducing the number of driving units 10, which helps to simplify wiring and increase the light-transmitting area.

[0099] Optional, see below Figure 6 In at least a portion of the driving units 10, each driving unit 10 is connected to multiple second sub-lines 22 via a first sub-line 21, and each second sub-line 22 is connected to a light-emitting unit 30. Compared to Figure 5 The technical solution, Figure 5 The technical solution can reduce the number of first sub-lines 21 and the number of vias required to connect the first sub-lines 21 and the second sub-lines 22, thereby improving light transmittance. The fewer the number of first sub-lines 21 and the smaller the number of vias, the higher the light transmittance.

[0100] Optionally, the driving array layer includes a first film layer 1, a first insulating layer 3, and a second film layer 2 stacked sequentially. A first sub-line 21 is located on the first film layer 1, and a second sub-line 22 is located on the second film layer 2. The first insulating layer 3 is provided with a first via 40. The first sub-line 21 can be connected to the second sub-line 22 through the first via 40. The first film layer 1 may be a first metal oxide layer. The second film layer 2 may be a second metal oxide layer. The first insulating layer may include at least one of a gate insulating layer 203, an interlayer insulating layer 204, and a planarization layer.

[0101] For example, at least a portion of the first vias 40 may be located in the light-transmitting area 101b. And / or, at least a portion of the first vias 40 may be located in the transition display area 103.

[0102] Optional, see below Figure 6 In at least a portion of the first sub-lines 21, each first sub-line 21 is connected to multiple second sub-lines 22 through the same first via 40.

[0103] Optional, see below Figure 5 The first via 40 is located at the connection of multiple second sub-lines 22.

[0104] Optional, Figure 7 For another schematic diagram of the connection between the driving unit and the light-emitting unit provided in the embodiments of this application, please refer to... Figure 7 The wiring also includes a third sub-line 23, which is set on the same layer as the second sub-line 22.

[0105] For example, the third sub-line 23 may include a light-transmitting conductive material, and the third sub-line 23 may be a third light-transmitting sub-line.

[0106] Each first sub-line 21 is connected to the third sub-line 23 through the first via 40, and the third sub-line 23 is connected to multiple second sub-lines 22.

[0107] For example, the third sub-line 23 and the second sub-line 22 are arranged in the same layer and are made of the same material. For example, the third sub-line 23 and the second sub-line 22 can be prepared simultaneously by the same process. That is, the third sub-line 23 and the second sub-line 22 can be obtained simultaneously by patterning the same film layer, thereby simplifying the process.

[0108] Optional, see below Figure 2 , Figure 3 or Figure 5 The driving array layer also includes a second insulating layer 206, which is located between the light-emitting device layer and the second film layer 2. The second insulating layer 206 is provided with a second via 50, and the second sub-line 22 is connected to the light-emitting unit 30 through the second via 50. For example, the second sub-line 22 is connected to the first electrode 31 through the second via 50.

[0109] For example, a first insulating layer is disposed between the film layer containing the first sub-line 21 and the film layer containing the second sub-line 22. For example, the first insulating layer 3 may include a first inorganic insulating layer and a first organic insulating layer 205. A first via 40 may penetrate the first insulating layer, that is, the first via 40 may penetrate the first inorganic insulating layer and the first organic insulating layer 205. The first inorganic insulating layer may include a gate insulating layer 203 and an interlayer insulating layer 204. At least a portion of the gate insulating layer 203 may be located between the first gate 303 and the active layer 302 of the metal-oxide transistor T1. The first organic insulating layer 205 may be a planarization layer.

[0110] For example, a second insulating layer 206 is disposed between the film layer where the second sub-line 22 is located and the film layer where the light-emitting unit 30 is located. For example, the second insulating layer may include a second organic insulating layer. The second via 50 can penetrate the second insulating layer 206, that is, the second via 50 can penetrate the second organic insulating layer. The second organic insulating layer may be a planarization layer.

[0111] For example, the display panel may also include a substrate 201, and the light-emitting unit 30 may include a first electrode 31, a light-emitting functional layer 32, and a second electrode 33 sequentially stacked along a direction away from the substrate 201. One of the first electrode 31 and the second electrode 33 may be an anode, and the other may be a cathode. For example, the first electrode 31 may be an anode, and the second electrode 33 may be a cathode.

[0112] For example, the display panel may further include a pixel defining layer 207 having pixel openings, at least a portion of the light-emitting functional layer 32 being located within the pixel openings. The pixel openings may expose at least a portion of the first electrode 31. The pixel defining layer 207 may be located on the side of the second insulating layer away from the substrate.

[0113] For example, the display panel may also include support pillars 208 located on the side of the pixel definition layer 207 away from the substrate 201.

[0114] For example, the display panel may also include a third insulating layer 202, at least a portion of which may be located between the second gate 301 and the active layer 302 of the metal oxide transistor T1.

[0115] Optional, see below Figure 2 or Figure 3 The first insulating layer 3 includes a first sub-layer and a second sub-layer. The first sub-layer is located between the first film layer 1 and the second sub-layer. The first via 40 includes a first sub-hole 41 and a second sub-hole 42. The first sub-layer is provided with the first sub-hole 41, and the second sub-layer is provided with the second sub-hole 42. The first sub-hole 41 is located between the second sub-hole 42 and the first sub-line 21. In the same first via 40, the first sub-hole 41 and the second sub-hole 42 are interconnected. In the same first via 40, the orthographic projection of the first sub-hole 41 on the substrate 201 overlaps with the orthographic projection of the second sub-hole 42 on the substrate 201.

[0116] The display panel also includes a first connecting portion 60, at least a portion of which is located in a first sub-hole 41 and connected to a first sub-line 21; a second sub-line 22 is connected to the first connecting portion 60 through a second sub-hole 42.

[0117] Part of the second sub-wire 22 can be filled into the second sub-hole 42. By providing the first connecting part 60, the risk that the second sub-wire 22 and the first sub-wire 21 will not contact each other due to the first via 40 being too deep can be reduced. If the first connecting part 60 is not provided, and the first via 40 is only filled with the second sub-wire 22, the second sub-wire 22 may not contact the first sub-wire 21 because the first via 40 is too deep, resulting in the driving unit 10 and the light-emitting unit 30 being unable to connect reliably.

[0118] Alternatively, a portion of the third sub-wire 23 can be filled into the second sub-hole 42. By providing the first connecting portion 60, the risk that the third sub-wire 23 and the first sub-wire 21 may not contact each other due to the first via 40 being too deep can be reduced. If the first connecting portion 60 is not provided, and the first via 40 is only filled with the third sub-wire 23, the third sub-wire 23 may not contact the first sub-wire 21 due to the first via 40 being too deep, resulting in the inability to reliably connect the driving unit 10 and the light-emitting unit 30.

[0119] For example, the first sub-via 41 may penetrate at least one insulating layer between the film layer containing the first sub-line 21 and the film layer containing the second sub-line 22, such as the first inorganic insulating layer 204 and the gate insulating layer 203. For example, the second sub-via 42 may penetrate at least one insulating layer between the film layer containing the first sub-line 21 and the film layer containing the second sub-line 22, such as the first organic insulating layer 205.

[0120] For example, the conductivity of the first connection portion 60 is greater than that of the second sub-wire 22, and the conductivity of the first connection portion 60 is greater than that of the first sub-wire 21. Compared to not providing the first connection portion 60, filling the first sub-hole 41 with the second sub-wire 22, providing the first connection portion 60 can reduce the line impedance.

[0121] For example, the film thickness of the first connection portion 60 is greater than the film thickness of the second sub-line 22, and the film thickness of the first connection portion 60 is greater than the film thickness of the first sub-line 21. Compared to not providing the first connection portion 60, filling the first sub-hole 41 with the second sub-line 22, providing the first connection portion 60 can reduce the line impedance.

[0122] For example, the light transmittance of the second sub-line 22 is greater than that of the first connecting portion 60, and the light transmittance of the first sub-line 21 is greater than that of the first connecting portion 60. Since the light transmittance of the first connecting portion 60 is low, the fewer the number of the first sub-holes 41 and the first connecting portions 60, the better it is to improve the light transmittance of the light-transmitting area 101b.

[0123] For example, the first sub-layer 4 may include a gate insulating layer 203 and an interlayer insulating layer 204. For example, the second sub-layer may include a first organic insulating layer 205. A first sub-via 41 may penetrate the gate insulating layer 203 and the interlayer insulating layer 204. A second sub-via 42 may penetrate the first organic insulating layer 205.

[0124] Optionally, the driving unit 10 includes a transistor (e.g., a metal-oxide-semiconductor transistor T1), and the first connection portion 60 is disposed on the same layer as the source 304 or drain 305 of the transistor.

[0125] For example, the source 304 of the transistor can be connected to the source region of the active layer 302 of the transistor, and the drain 305 of the transistor can be connected to the drain region of the active layer 302 of the transistor.

[0126] The first connection portion 60 is disposed on the same layer as the source 304 or drain 305 of the transistor and is made of the same material. For example, the first connection portion 60 and the source 304 or drain 305 of the transistor can be fabricated simultaneously by the same process. In other words, the first connection portion 60 and the source 304 or drain 305 of the transistor can be obtained simultaneously by patterning the same film layer, thereby simplifying the process.

[0127] Optionally, the first connection portion 60 may be made of a metallic material. This configuration allows the conductivity of the first connection portion 60 to be greater than that of the second sub-wire 22, thereby helping to reduce line impedance.

[0128] For example, at least a portion of the first connecting portions 60 may be located in the light-transmitting area 101b. For example, at least a portion of the first sub-holes 41 may be located in the light-transmitting area 101b. For example, at least a portion of the second sub-holes 42 may be located in the light-transmitting area 101b.

[0129] For example, at least a portion of the first connecting portions 60 may be located in the transition display area 103. For example, at least a portion of the first sub-holes 41 may be located in the transition display area 103. For example, at least a portion of the second sub-holes 42 may be located in the transition display area 103. This arrangement can reduce the impact of the first connecting portions 60 on the light transmittance of the light-transmitting area 101b.

[0130] In some embodiments, the second sub-line 22 or the third sub-line 23 can be fabricated using atomic layer deposition (ALD) process. The step coverage is good enough that the first connecting portion 60 may not be provided. A portion of the second sub-line 22 fills the first via 40 and contacts the first sub-line 21, or a portion of the third sub-line 23 fills the first via 40 and contacts the first sub-line 21, thereby improving the light transmittance.

[0131] Optionally, the diameter of the first via 40 is greater than or equal to 1.5 μm and less than or equal to 3.5 μm. A smaller diameter of the first via 40 is more beneficial for improving light transmittance (for example, the light transmittance of the first connection portion 60 in the first sub-via 41 is less than the light transmittance of the second sub-line 22). However, the diameter of the first via 40 cannot be too small, otherwise it will lead to a higher line impedance. Setting the diameter of the first via 40 to be greater than or equal to 1.5 μm and less than or equal to 3.5 μm ensures light transmittance while reducing impedance.

[0132] For example, the diameter of the first via 40 can be 1.5um, 2um, 2.5um, 3um or 3.5um, etc.

[0133] Optionally, in the same wiring, the first sub-line 21 and the second sub-line 22 are connected in series; for example, the driving unit 10 is connected to the light-emitting unit 30 in sequence via the first sub-line 21 and the second sub-line 22. With this configuration, the length of the second sub-line 22 is shorter, reducing the risk of wire breakage.

[0134] Optionally, in the same wiring, the first sub-line 21 and the second sub-line 22 are connected in series; for example, the driving unit 10 is connected to the light-emitting unit 30 in sequence via the second sub-line 22 and the first sub-line 21.

[0135] Optionally, the length of the first sub-line 21 is L1, and the length of the second sub-line 22 is L2. The ratio of the lengths of the first sub-line 21 and the second sub-line 22, L1 / L2, is greater than or equal to 1:9 and less than or equal to 9:1. Neither the second sub-line 22 nor the first sub-line 21 should be too long, otherwise they are prone to breakage. A ratio of L1 / L2 greater than or equal to 1:9 and less than or equal to 9:1 can reduce the probability of breakage in both the second sub-line 22 and the first sub-line 21.

[0136] For example, L1 / L2 can be 1:9, 1:8, 1:7, 1:6, 1:5, 1:4, 1:3, 1:2 or 1:1, etc.

[0137] For example, L2 / L1 can be 1:9, 1:8, 1:7, 1:6, 1:5, 1:4, 1:3, 1:2 or 1:1, etc.

[0138] For example, L1 / L2 is greater than or equal to 2:3 and less than or equal to 3:2. This makes the lengths of the first sub-line 21 and the second sub-line 22 approximately equal in the same routing path.

[0139] For example, the ratio L1 / L2 of the length of the first sub-line 21 and the length of the second sub-line 22 is greater than or equal to 1:3 and less than or equal to 3:1.

[0140] For example, the ratio L1 / L2 of the length of the first sub-line 21 and the length of the second sub-line 22 is greater than or equal to 1:2 and less than or equal to 2:1.

[0141] The lengths of the first sub-line 21 and the second sub-line 22 can be set as needed, but this embodiment does not limit this.

[0142] For example, the width of the first sub-line 21 is greater than or equal to 1µm and less than or equal to 10µm. For example, the width of the first sub-line 21 can be 1µm, 2.5µm, 5µm, 7.5µm, or 10µm. A smaller width of the first sub-line 21 is more conducive to improving light transmittance, but the width of the first sub-line 21 cannot be too small to avoid line breakage. Therefore, the width of the first sub-line 21 is set within the above range to ensure light transmittance and line reliability.

[0143] For example, the width of the second sub-line 22 is greater than or equal to 1µm and less than or equal to 10µm. For example, the width of the second sub-line 22 can be 1µm, 2.5µm, 5µm, 7.5µm, or 10µm. A smaller width of the second sub-line 22 is more beneficial for improving light transmittance, but the width of the second sub-line 22 cannot be too small to avoid line breakage. Therefore, the width of the second sub-line 22 is set within the above range to ensure light transmittance and line reliability.

[0144] Optionally, the display panel also includes a substrate 201, and a first film layer 1, a first insulating layer 3, a second film layer 2, a second insulating layer, and a light-emitting device layer are sequentially stacked along a direction Z away from the substrate 201.

[0145] For example, in the thickness direction Z of the display panel, at least a portion of the first sub-line 21 is at a distance from the substrate 201 less than at least a portion of the second sub-line 22 is at a distance from the substrate 201; at least a portion of the second sub-line 22 is at a distance from the substrate 201 less than at least a portion of the light-emitting unit 30 is at a distance from the substrate 201.

[0146] For example, in the thickness direction Z of the display panel, at least a portion of the second sub-line 22 is at a distance from the substrate 201 less than at least a portion of the first sub-line 21 is at a distance from the substrate 201; and at least a portion of the first sub-line 21 is at a distance from the substrate 201 less than at least a portion of the light-emitting unit 30 is at a distance from the substrate 201.

[0147] For example, in the same wiring, the first sub-line 21 and the second sub-line 22 can be connected in parallel. Therefore, even if one of the first sub-line 21 and the second sub-line 22 breaks while the other does not, the reliability of the connection between the driving unit 10 and the light-emitting unit 30 is guaranteed. The lengths of the first sub-line 21 and the second sub-line 22 can be different. The first sub-line 21 can be connected in parallel to the second part (which can be the middle part) of the second sub-line 22, or the second sub-line 22 can be connected in parallel to the second part (which can be the middle part) of the first sub-line 21. By setting parallel wiring segments in the weak sections of the sub-line 22, the reliability of the line can be improved.

[0148] For example, Figure 8 For another schematic diagram of the connection between the driving unit and the light-emitting unit provided in the embodiments of this application, please refer to... Figure 8The length of the first sub-line 21 is less than the length of the second sub-line 22. The second sub-line 22 includes a first part 22a, a second part 22b, and a third part 22c connected in sequence. The first sub-line 21 can be connected in parallel to the second part of the second sub-line 22 (which can be the middle part). The first part 22a of the second sub-line 22 is connected to the driving unit 10. The third part 22c of the second sub-line 22 is connected to the light-emitting unit 30. For example, the width of the second part of the second sub-line 22 is less than the width of at least one of the first part, the third part, and the first sub-line 21. The width of the second part of the second sub-line 22 is less than the width of the first part, and the width of the second part of the second sub-line 22 is less than the width of the third part. Length is also the dimension in the extension direction. The width of the second part of the second sub-line 22 can be less than the width of the first sub-line 21.

[0149] For example, Figure 9 For another schematic diagram of the connection between the driving unit and the light-emitting unit provided in the embodiments of this application, please refer to... Figure 9 The length of the second sub-line 22 is less than the length of the first sub-line 21. The first sub-line 21 includes a first portion 21a, a second portion 21b, and a third portion 21c connected in sequence. The second sub-line 22 can be connected in parallel to the second portion (which may be the middle portion) of the first sub-line 21. The first portion 21a of the first sub-line 21 is connected to the driving unit 10. The third portion 21c of the first sub-line 21 is connected to the light-emitting unit 30. For example, the second portion of the first sub-line 21 is less than the width of at least one of the second portion of the first sub-line 21, the third portion of the first sub-line 21, and the second sub-line 22. The width of the second portion of the first sub-line 21 is less than the width of the first portion of the first sub-line 21, and the width of the second portion of the first sub-line 21 is less than the width of the third portion of the first sub-line 21. The width of the second portion of the first sub-line 21 may be less than the width of the second sub-line 22.

[0150] Optionally, the display panel may also include a second display area 102, wherein the light transmittance of the light-transmitting area 101b is greater than that of the second display area 102.

[0151] For example, the second display area 102 can be a conventional display area. For example, the second display area 102 may include a second driving unit 70 and a second light-emitting unit 80, with the second driving unit 80 connected to the second light-emitting unit 70. The second driving unit 80 can generate a driving current to drive the second light-emitting unit 70 to emit light. The driving array layer may include the second driving unit 80. The light-emitting device layer may include the second light-emitting unit 70. For example, the connected second driving unit 80 and second light-emitting unit 70 may have at least partial overlap in their orthographic projections on the substrate 201. The second driving unit 80 can be connected to the second light-emitting unit 70 via vias. Since the second driving unit 80 and the second light-emitting unit 70 are close together, they do not need to be connected by long wires, thus eliminating the problem of broken wires.

[0152] Optionally, the display panel also includes a transition display area 103 located between the first display area 101 and the second display area 102. For example, the driving unit 10 is located in the transition display area 103. This arrangement can improve the light transmittance of the first display area 101 and increase the light-transmitting area of ​​the first display area 101. The transition display area 103 may be disposed around at least a portion of the first display area 101. The second display area 102 may be disposed around at least a portion of the transition display area 103.

[0153] For example, Figure 10 A partial top view of a display panel provided in an embodiment of this application is shown below. Figure 10 At least a portion of the first vias 40 may be disposed close to the transition display area 103. The distance between at least a portion of the first vias 40 and the transition display area 103 is less than the distance between the first vias 40 and the center of the first display area 101, so as to reduce the influence of the first vias 40 on the light-transmitting area 101b. Compared with disposing the first vias 40 in the middle area of ​​the first display area 101, disposing the first vias 40 in the edge area of ​​the first display area 101, for example, close to the edge of the transition display area 103, reduces the influence of the first vias 40 on the light transmittance of the light-transmitting area 101b, and can improve the light transmittance of the light-transmitting area 101b.

[0154] For example, at least a portion of the first vias 40 may be disposed close to the light-emitting area 101a, and the distance between at least a portion of the first vias 40 and the transition display area 103 is greater than the distance between the first vias 40 and the center of the first display area 101. Compared to disposing the first vias 40 in the middle region of the first display area 101, disposing the first vias 40 at the edge of the first display area 101, for example, close to the edge of the transition display area 103, reduces the impact of the first vias 40 on the light transmittance of the light-transmitting area 101b, thereby improving the light transmittance of the light-transmitting area 101b.

[0155] For example, see Figure 10Multiple first vias 40 corresponding to multiple driving units 10 are arranged along the boundary between the transition display area 103 and the first display area 101. With this arrangement, the first vias 40 can be regularly arranged at the edge of the first display area 101, which can reduce the impact of the first vias 40 on the light transmittance of the light-transmitting area 101b and improve the light transmittance of the light-transmitting area 101b.

[0156] For example, the orthographic projection of the first via 40 onto the substrate 201 can be one or more of the following: a circle, a rectangle, a rounded rectangle, or an ellipse.

[0157] The area in the first display area 101 where light-emitting units are provided is the light-emitting area 101a. The area in the first display area 101 where no light-emitting units are provided is the light-transmitting area 101b. At least part of the light-transmitting area 101b is located in the gap between the light-emitting areas 101a.

[0158] For example, see Figure 10 Compared to the driving unit 10 connected to the light-emitting unit 30 near the edge of the first display area 101, the driving unit 10 connected to the light-emitting unit 30 near the middle of the first display area 101 is further away from the first display area 101. For example, the length of the trace 20 connected to the light-emitting unit 30 near the middle of the first display area 101 is greater than the length of the trace 20 connected to the light-emitting unit 30 located at the edge of the first display area 101 and near the transition display area 193.

[0159] For example, the longer the trace 20 connected to the light-emitting unit 30 located near the center of the first display area 101, the more first sub-lines 21 it includes, and / or the more second sub-lines 22 it includes. For example, the shorter the trace 20 connected to the light-emitting unit 30 located at the edge of the first display area 101 and near the transition display area 193, the fewer the number of first sub-lines 21 it includes, and / or the fewer the number of second sub-lines 22 it includes.

[0160] For example, the number of first sub-lines 21 in the wiring 20 connected to the light-emitting unit 30 near the center of the first display area 101 is greater than the number of first sub-lines 21 in the wiring 20 connected to the light-emitting unit 30 located at the edge of the first display area 101 and near the transition display area 193. And / or, the number of second sub-lines 22 in the wiring 20 connected to the light-emitting unit 30 near the center of the first display area 101 is greater than the number of second sub-lines 22 in the wiring 20 connected to the light-emitting unit 30 located at the edge of the first display area 101 and near the transition display area 193.

[0161] For example, Figure 11 A partial top view schematic diagram of another display panel provided in an embodiment of this application, see below. Figure 11Compared to the driving unit 10 connected to the light-emitting unit 30 near the edge of the first display area 101, the driving unit 10 connected to the light-emitting unit 30 near the center of the first display area 101 is closer to the first display area 101. This arrangement makes the length of the trace 20 connected to the light-emitting unit 30 near the center of the first display area 101 approximately equal to the length of the trace 20 connected to the light-emitting unit 30 near the edge of the first display area 101.

[0162] For example, the driving unit 10 is located in the first display area 101. The driving unit 10 may be located in the light-emitting area 101b, and the driving unit 10 may be completely covered by the first electrode 31 to improve the light transmittance of the first display area 101 and increase the light-transmitting area of ​​the first display area 101.

[0163] For example, the density of the light-emitting units 30 in the first display area 101 is less than the density of the second light-emitting units 70 in the second display area 102.

[0164] The display panel provided in this application embodiment may be a display panel that emits light based on the principle of Liquid Crystal Display (LCD), or a display panel that emits light based on the principle of Organic Light Emitting Diode (OLED), or a display panel that emits light based on the principle of Quantum Dot Light Emitting Diodes (QLED). This application does not specifically limit it.

[0165] This application also provides a display device, including the display panel provided in any embodiment of this application.

[0166] For example, the display device includes a photosensitive element and a display panel provided in any embodiment of this application. The photosensitive element is used to receive light transmitted through the light-transmitting area. The photosensitive element may include one or more of a camera, a fingerprint recognition module, an ambient light sensor, an infrared sensor, etc.

[0167] Display devices include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablets, e-readers, televisions, access control systems, smart landlines, consoles, laptops, wearable devices, in-vehicle displays, and other devices with display functions.

[0168] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0169] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, include: Substrate; A driving array layer, located on the substrate, includes driving units and traces, the traces including a first sub-line and a second sub-line disposed on different layers and connected. A light-emitting device layer is located on the substrate. The light-emitting device layer includes a light-emitting unit, and the driving unit is connected to the light-emitting unit via the first sub-line and the second sub-line.

2. The display panel according to claim 1, characterized in that, The driving unit includes a metal oxide transistor, and the first sub-line is disposed on the same layer as the active layer of the metal oxide transistor. Preferably, the active layer of the metal-oxide transistor includes a channel region, and source and drain regions located on both sides of the channel region; at least a portion of the conductivity of the first sub-line is greater than or equal to the conductivity of the source and / or drain regions of the active layer of the metal-oxide transistor. Preferably, the ion doping concentration of at least a portion of the first sub-line is greater than or equal to the ion doping concentration of the source and / or drain regions of the active layer of the metal oxide transistor.

3. The display panel according to claim 1, characterized in that, In at least a portion of the driving units, each driving unit is sequentially connected to a light-emitting unit via the first sub-line and the second sub-line.

4. The display panel according to claim 1, characterized in that, In at least a portion of the driving units, each driving unit is connected to a plurality of the light-emitting units. Preferably, in at least a portion of the driving units, each driving unit is connected to a plurality of second sub-lines via a first sub-line, and each second sub-line is connected to one of the light-emitting units.

5. The display panel according to claim 4, characterized in that, The driving array layer includes a first metal oxide layer, a first insulating layer and a second metal oxide layer stacked sequentially. The first sub-line is located in the first metal oxide layer and the second sub-line is located in the second metal oxide layer. The first insulating layer is provided with a first via. At least a portion of the first sub-lines are connected to multiple second sub-lines through the same first via. Preferably, the first via is located at the junction of the plurality of second sub-lines.

6. The display panel according to claim 4, characterized in that, The routing also includes a third sub-line, which is disposed on the same layer as the second sub-line; The driving array layer includes a first metal oxide layer, a first insulating layer and a second metal oxide layer stacked sequentially. The first sub-line is located in the first metal oxide layer and the second sub-line is located in the second metal oxide layer. The first insulating layer is provided with a first via. Each first sub-line is connected to the third sub-line through the first via. The third sub-line is connected to multiple second sub-lines. The first insulating layer includes at least one of a gate insulating layer, an interlayer insulating layer, and a planarization layer.

7. The display panel according to claim 1, characterized in that, The driving array layer includes a first metal oxide layer, a first insulating layer, and a second metal oxide layer stacked sequentially. The first sub-line is located on the first metal oxide layer, and the second sub-line is located on the second metal oxide layer. The first insulating layer has a first via, through which the first sub-line is connected to the second sub-line. The driving array layer further includes a second insulating layer, which is located between the light-emitting device layer and the second metal oxide layer. The second insulating layer is provided with a second via, and the second sub-line is connected to the light-emitting unit through the second via.

8. The display panel according to claim 7, characterized in that, The first insulating layer includes a first sub-layer and a second sub-layer, the first sub-layer being located between the first metal oxide layer and the second sub-layer. The first via includes a first sub-via and a second sub-via, the first sub-layer having the first sub-via and the second sub-layer having the second sub-via, the first sub-via being located between the second sub-via and the first sub-wire. The display panel further includes a first connecting portion, at least a portion of which is located in the first sub-hole and connected to the first sub-line; the second sub-line is connected to the first connecting portion through the second sub-hole. Preferably, the conductivity of the first connecting portion is greater than the conductivity of the second sub-wire, and the conductivity of the first connecting portion is greater than the conductivity of the first sub-wire. The light transmittance of the second sub-wire is greater than that of the first connecting portion, and the light transmittance of the first sub-wire is greater than that of the first connecting portion; Preferably, the driving unit includes a transistor, and the first connection portion is disposed on the same layer as the source or drain of the transistor; preferably, the first connection portion includes a metal material; Preferably, the diameter of the first via is greater than or equal to 1.5 μm and less than or equal to 3.5 μm; Preferably, the first metal oxide layer, the first insulating layer, the second metal oxide layer, the second insulating layer, and the light-emitting device layer are stacked sequentially in a direction away from the substrate.

9. The display panel according to claim 1, characterized in that, In the same wiring, the first sub-line and the second sub-line are connected in series; the driving unit is connected to the light-emitting unit in sequence via the first sub-line and the second sub-line; preferably, the length of the first sub-line is L1, the length of the second sub-line is L2, and the ratio of the length of the first sub-line to the length of the second sub-line, L1 / L2, is greater than or equal to 1:9 and less than or equal to 9:1; Preferably, the first sub-line includes a light-transmitting and conductive material, and the second sub-line includes a light-transmitting and conductive material; Preferably, the display panel includes a first display area, the first display area includes a light-transmitting area and a light-emitting area, the light-emitting unit is located in the light-emitting area, at least a portion of the first sub-line is located in the light-transmitting area, and / or, at least a portion of the second sub-line is located in the light-transmitting area; Preferably, the first sub-wire and the second sub-wire are made of different materials. Preferably, the second sub-line comprises at least one of indium tin oxide, tin oxide, indium zinc oxide, indium titanium zinc oxide, and indium oxide; Preferably, the width of the first sub-line is greater than or equal to 1 μm and less than or equal to 10 μm; And / or, the width of the second sub-line is greater than or equal to 1 μm and less than or equal to 10 μm; Preferably, the orthographic projection of the light-emitting unit on the substrate is located outside the orthographic projection of the driving unit on the substrate; preferably, the display panel further includes a second display area and a transition display area, the light transmittance of the light-transmitting area is greater than the light transmittance of the second display area, the transition display area is located between the first display area and the second display area, and the driving unit is located in the transition display area.

10. The display panel according to claim 1, characterized in that, In the same routing, the first sub-line and the second sub-line are connected in parallel; Preferably, the first sub-wire includes a first part, a second part, and a third part connected in sequence, the two ends of the second sub-wire are connected in parallel with the second part of the first sub-wire through a first via, the first part of the first sub-wire is connected to the driving unit, and the third part of the first sub-wire is connected to the light-emitting unit. Preferably, the width of the second portion of the first sub-line is smaller than the width of at least one of the first portion of the first sub-line, the third portion of the first sub-line, and the second sub-line; Alternatively, the second sub-wire includes a first part, a second part, and a third part connected in sequence, with both ends of the first sub-wire connected in parallel to the second part of the second sub-wire through a first via; the first part of the second sub-wire is connected to the driving unit, and the third part of the second sub-wire is connected to the light-emitting unit. Preferably, the width of the second portion of the second sub-line is less than the width of at least one of the first portion of the second sub-line, the third portion of the second sub-line, and the first sub-line.

11. A display device, characterized in that, Includes the display panel as described in any one of claims 1-10.

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