CN114843316A - Display panel, manufacturing method thereof and mobile terminal - Google Patents

Abstract

The embodiment of the application discloses a display panel, a manufacturing method thereof and a mobile terminal, wherein the display panel comprises a substrate, a driving device layer and an anode layer, wherein the anode layer is arranged on the driving device layer and comprises a plurality of anodes and signal routing wires, and each anode comprises a first sub-part arranged on the driving device layer and a second sub-part arranged on the first sub-part; the anode layer comprises a first conductive sublayer and a second conductive sublayer, the first conductive sublayer is arranged on the driving device layer, the second conductive sublayer is arranged on the first conductive sublayer, the first conductive sublayer comprises a first sub-portion and a signal line, and the second conductive sublayer comprises a second sub-portion. The application of the display panel structure can effectively reduce the number of layers of the metal routing layer in the display panel, reduce the thickness of the display panel and improve the utilization rate of materials of the display panel.

Description

Display panel, manufacturing method thereof and mobile terminal

Technical Field

The application relates to the technical field of display, in particular to a display panel, a manufacturing method of the display panel and a mobile terminal.

Background

At present, the anode layer of the mass-produced OLED display panel usually includes a high-work-function film layer and a metal film layer with good conductivity, and meanwhile, the display panel also has multiple metal routing layers, and the metal routing layers and the anode layer are overlapped to make the whole thickness of the display panel larger, which is not beneficial to the lightening and thinning of the display panel, and the utilization rate of the material is lower.

Disclosure of Invention

The embodiment of the application provides a display panel, a manufacturing method of the display panel and a mobile terminal, which can effectively reduce the number of layers of a metal wiring layer in the display panel, reduce the thickness of the display panel and improve the utilization rate of materials of the display panel.

An embodiment of the present application provides a display panel, including:

a substrate, a driving device layer disposed on the substrate;

the anode layer is arranged on the driving device layer and comprises a plurality of anodes and signal routing lines, and each anode comprises a first sub-portion arranged on the driving device layer and a second sub-portion arranged on the first sub-portion;

the anode layer includes a first conductive sub-layer disposed on the driving device layer and a second conductive sub-layer disposed on the first conductive sub-layer, the first conductive sub-layer includes a first sub-portion and the signal trace, and the second conductive sub-layer includes a second sub-portion.

Optionally, the display panel further includes a pixel definition layer disposed on the anode layer, an opening corresponding to the anode is disposed on the pixel definition layer, and the pixel definition layer covers the signal trace;

the driving device layer comprises a plurality of driving devices, the anodes comprise a plurality of anode groups, the anode groups comprise at least two anodes, the signal wiring comprises anode connecting wires, the anodes in the anode groups are connected with each other through the anode connecting wires, and the anodes are connected with the driving devices.

Optionally, the signal trace includes a bridge segment; the driving device layer comprises at least one metal layer, insulating layers are arranged between the metal layers and the anode layer in a stacking mode, and at least one metal layer comprises a plurality of driving signal routing lines;

the insulating layer between the driving signal wiring and the bridging section is provided with a first through hole, the bridging section penetrates through the first through hole to be connected with the driving signal wiring, and two different driving signal wirings are bridged through the bridging section.

Optionally, the signal trace includes a first electrode trace, and at least one of the metal layers includes a second electrode trace;

and a second through hole is formed in the insulating layer between the second electrode wire and the first electrode wire, and the first electrode wire is connected with the second electrode wire through the second through hole.

Optionally, the second conductive sub-layer includes a first material layer and a second material layer disposed on the first material layer, the second sub-portion includes a reflective anode and a transparent anode disposed on the reflective anode, the first material layer includes the reflective anode, and the second material layer includes the transparent anode.

Optionally, in a direction perpendicular to the substrate, a projection of the reflective anode coincides with a projection of the transparent anode.

Optionally, the material of the second material layer includes indium tin oxide.

Optionally, the first conductive sublayer and the second material layer are made of the same material.

The application also provides a manufacturing method of the display panel, which comprises the following steps:

providing a substrate, and forming a driving device layer on the substrate;

forming an anode layer on the driving device layer, the anode layer including a plurality of anodes and signal traces, the anodes including a first sub-portion disposed on the driving device layer and a second sub-portion disposed on the first sub-portion; the anode layer is formed by a first conductive sub-layer formed on the driving device layer and a second conductive sub-layer formed on the first conductive sub-layer, the first conductive sub-layer includes a first sub-portion and the signal trace, and the second conductive sub-layer includes a second sub-portion.

The application also provides a mobile terminal, which comprises the display panel and a terminal main body, wherein the terminal main body and the display panel are combined into a whole.

The beneficial effects of the invention at least comprise:

by arranging the anode layer of the display panel provided by the invention, the anode comprises the plurality of anodes and the signal routing wires, the anode comprises the first sub-part arranged on the driving device layer and the second sub-part arranged on the first sub-part, the anode layer comprises the first conductive sub-layer arranged on the driving device layer and the second conductive sub-layer arranged on the first conductive sub-layer, the first conductive sub-layer comprises the first sub-part and the signal routing wires, and the second conductive sub-layer comprises the second sub-part, so that the first conductive sub-layer forming the anode can be used as other signal routing wires in the display panel besides being used as a part of the anode, the material utilization rate in the panel manufacturing process is improved, the arrangement number of metal routing wires in the display panel is reduced, the production cost is reduced, and the market competitiveness is enhanced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an anode layer structure provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of another display panel provided in the embodiment of the present application;

fig. 5 is a schematic structural diagram of another display panel provided in an embodiment of the present application;

FIG. 6 is a flow chart illustrating a process for fabricating a display panel according to an embodiment of the present disclosure;

fig. 7a is a diagram of a manufacturing process of a display panel according to an embodiment of the present application;

fig. 7b is a diagram of a manufacturing process of a display panel according to an embodiment of the present application;

fig. 7c is a diagram illustrating a manufacturing process of a display panel according to an embodiment of the present application;

fig. 7d is a diagram illustrating a manufacturing process of a display panel according to an embodiment of the present application;

fig. 7e is a diagram of a manufacturing process of a display panel according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a display panel, a manufacturing method of the display panel and a mobile terminal. The following are detailed below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments. In addition, in the description of the present application, the term "including" means "including but not limited to". The terms first, second, third and the like are used merely as labels, and do not impose numerical requirements or an established order. Various embodiments of the invention may exist in a range of versions; it is to be understood that the description in the form of a range is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention; accordingly, the described range descriptions should be considered to have specifically disclosed all the possible sub-ranges as well as individual numerical values within that range. For example, it is contemplated that the description of a range from 1 to 6 has specifically disclosed sub-ranges such as, for example, from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as individual numbers within a range such as, for example, 1, 2, 3, 4, 5, and 6, as applicable regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any number (fractional or integer) recited within the indicated range.

To solve the above technical problem, the present application provides the following embodiments, specifically referring to fig. 1 to 6 and fig. 7a to 7 e.

An embodiment of the present application provides a display panel, as shown in fig. 1 and fig. 2, including:

a substrate 10, a driving device layer 20 disposed on the substrate 10;

an anode layer 30 disposed on the driving device layer 20 and including a plurality of anodes 300 and signal traces 311, wherein the anodes 300 include a first sub-portion 312 disposed on the driving device layer 20 and a second sub-portion 322 disposed on the first sub-portion 312;

the anode layer 30 includes a first conductive sub-layer 301 disposed on the driving device layer 20 and a second conductive sub-layer 302 disposed on the first conductive sub-layer 301, where the first conductive sub-layer 301 includes a first sub-portion 312 and the signal trace 311, and the second conductive sub-layer 302 includes the second sub-portion 322.

Specifically, the display panel may be an OLED display panel, and the display panel is used as the OLED display panel in this embodiment for description.

It should be noted that the display panel includes a substrate 10, a driving device layer 20 disposed on the substrate 10, and a pixel light emitting layer disposed on the driving device layer 20, where the pixel light emitting layer includes an anode layer 30 (the anode layer 30 includes a plurality of anodes 300), a pixel defining layer 401, an organic light emitting layer 402, and a cathode layer 403 disposed on the organic light emitting layer 402, an opening 4011 is disposed on the pixel defining layer 401 at a position corresponding to the anode 300, an organic light emitting layer 402 is disposed in the opening 4011, the driving device layer 20 includes a plurality of driving devices, and the driving devices are connected to the anode 300 to drive the organic light emitting layer 402 to emit light, so that the display panel performs display.

Specifically, the pixel light-emitting layer comprises a plurality of sub-pixels, and the driving device at least drives one sub-pixel to emit light.

Specifically, the substrate 10 may be glass, or may also be a polyimide or acrylic material, which is not limited specifically and may be adjusted according to actual production conditions.

Specifically, the driving device may be a thin film transistor, and the plurality of thin film transistors are arranged in an array.

It should be noted that the thin film transistor includes an active layer, the active layer includes a channel portion 201, source and drain connection sections 202 disposed on two sides of the channel portion 201 and connected to the channel portion 201, a gate insulation layer 203 disposed on the active layer and corresponding to the channel portion 201, and a gate 204 disposed on the gate insulation layer 203, a metal layer 207 is disposed on the active layer, the metal layer 207 includes a first metal layer, the first metal layer may include a source and a drain, the source and the drain are respectively connected to the source and drain connection sections 202, the metal layer 207 may further include a second metal layer, the second metal layer includes a plurality of driving signal traces L1, the driving signal trace L1 may specifically be a signal trace 311 of VDD, VSS, data, and the like, and may also be a gate driving line connected to the gate 204.

Specifically, the anode layer 30 includes an anode 300 and a signal trace 311, the anode 300 includes a first sub-portion 312 and a second sub-portion 322 disposed on the first sub-portion 312, the anode layer 30 includes a first conductive sub-layer 301 and a second conductive sub-layer 302, the first conductive sub-layer 301 includes the signal trace 311 and the first sub-portion 312 of the anode 300, that is, the signal trace 311 and the first sub-portion 312 are disposed on the same layer and formed by using the same mask.

Specifically, the signal trace 311 may serve as a bridge segment 31101 to connect different driving signal traces L1 in the TFT through a via hole on the insulating layer, specifically including but not limited to a data signal trace, a scanning signal trace, and the like, and may also serve as an anode connecting line L2 connecting two adjacent anodes 300, or serve as an electrode in the TFT structure.

Specifically, the material of the first conductive sub-layer 301 includes, but is not limited to, Indium Tin Oxide (ITO), aluminum-doped zinc oxide (AZO), Indium Zinc Oxide (IZO), and the like.

Specifically, the second conductive sublayer 302 may be a single-layer film layer or a laminated composite film layer, and is not particularly limited.

Specifically, the second conductive sub-layer 302 includes a second sub-portion 322, the first sub-portion 312 and the second sub-portion 322 are disposed correspondingly, and the second sub-portion 322 does not cover the signal trace 311 (the signal trace 311 of the first conductive sub-layer 301).

It is understood that, by disposing the anode layer 30 of the display panel of the present invention to include a plurality of anodes 300 and signal traces 311, the anode 300 includes a first sub-portion 312 disposed on the driving device layer 20 and a second sub-portion 322 disposed on the first sub-portion 312, the anode layer 30 includes a first conductive sub-layer 301 disposed on the driving device layer 20 and a second conductive sub-layer 302 disposed on the first conductive sub-layer 301, the first conductive sub-layer 301 includes the first sub-portion 312 and the signal traces 311, the second conductive sub-layer 302 includes the second sub-portion 322, the first conductive sublayer 301 forming the anode 300 can be used as other signal routing lines 311 in the display panel besides being used as a part of the anode 300, so that the material utilization rate in the panel manufacturing process is improved, the number of metal routing layers in the display panel is reduced, the production cost is reduced, and the market competitiveness is enhanced.

In an embodiment, as shown in fig. 2, the display panel further includes a pixel defining layer 401 disposed on the anode layer 30, an opening 4011 corresponding to the anode 300 is disposed on the pixel defining layer 401, and the pixel defining layer 401 covers the signal trace 311;

The driving device layer 20 includes a plurality of driving devices, a plurality of anodes 300 includes a plurality of anode groups 300g, one anode group 300g includes at least two anodes 300, the signal trace 311 includes an anode connection line L2, in one anode group 300g, the anodes 300 are connected to each other through the anode connection line L2, and one anode 300 is connected to the driving devices.

Specifically, the material of the pixel defining layer 401 may be a photoresist material, in a specific embodiment, in order to achieve full-color display and improve the space utilization of the display panel, a plurality of sub-pixels of the same color may be disposed in the same pixel unit, and the plurality of sub-pixels of the same color may be controlled by using one driving device, so that the plurality of sub-pixels of the same color may need to be connected by a trace, and in this technology, in order to not increase the number of layers of the film of the display panel (i.e., one metal layer is used to form a trace connected to the anode 300, one insulating layer is used to prevent short circuit of the trace), the first conductive sub-layer 301 may be formed into the corresponding signal trace 311 and the first sub-portion 312.

Specifically, the driving device in this embodiment may be a TFT.

The display panel includes a pixel light emitting layer, the pixel light emitting layer includes an anode layer 30 (the anode layer 30 includes a plurality of anodes 300), a pixel defining layer 401, an organic light emitting layer 402, and a cathode layer 403 disposed on the organic light emitting layer 402, an opening 4011 is disposed on the pixel defining layer 401 at a position corresponding to the anode 300, the organic light emitting layer 402 is disposed in the opening 4011, and the driving device layer 20 includes a plurality of driving devices, and the driving devices are connected to the anodes 300 to drive the organic light emitting layer 402 to emit light, so that the display panel performs display.

Specifically, the plurality of anodes 300 are divided into a plurality of anode groups 300g according to actual production requirements, a plurality of sub-pixels corresponding to the plurality of anodes 300 in one anode group 300g are controlled by one TFT, only one anode 300 in one anode group 300g is directly connected to the TFT, and the other anodes 300 are indirectly connected to the TFT by an anode connection line L2, that is, the plurality of anodes 300 in one anode group 300g may be connected in series or in parallel, and the specific connection mode is not limited.

It can be understood that, by connecting the anodes 300 of a plurality of sub-pixels of the same color through the signal trace 311 (anode connection line L2) of the first conductive sub-layer 301 and then driving the sub-pixels with a driving device, the display panel can realize the connection of a plurality of anodes 300 without adding an additional metal layer 207 and an additional insulating layer 206, thereby realizing full-color display of the display panel.

In an embodiment, as shown in fig. 3 and fig. 4, the signal trace 311 includes a bridge segment 31101; the driving device layer 20 includes at least one metal layer 207, insulating layers 206 are stacked between the metal layers 207 and between the metal layer 207 and the anode layer 30, and at least one of the metal layers 207 includes a plurality of driving signal traces L1;

a first via hole is formed in the insulating layer 206 between the driving signal trace L1 and the bridge section 31101, the bridge section 31101 passes through the first via hole to be connected to the driving signal trace L1, and two different driving signal traces L1 are bridged by the bridge section 31101.

Specifically, the metal layer 207 is mainly used to form a driving signal trace L1, and the driving signal trace L1 includes, but is not limited to, a data signal trace, a scan signal trace, VDD, VSS, data, and the like.

Specifically, the driving signal traces L1 bridged by the bridging segment 31101 may be disposed in the same layer (as shown in fig. 3) or in different layers (as shown in fig. 4).

Specifically, the metal layer 207 may be one layer, two layers, or three layers, which is selected according to actual production conditions, and is not limited herein, it should be noted that adjacent two metal layers 207 are separated by an insulating layer 206 in this application, and the material of the insulating layer 206 includes, but is not limited to, an organic polymer material, an organic polymer, an inorganic material, and the like.

Specifically, the material of the metal layer 207 includes, but is not limited to, silver, magnesium, aluminum, lithium, gallium, indium, and alloys thereof, and metal oxides, i.e., materials having conductive properties, all fall within the scope of the present application.

In a specific implementation manner, a specific example may be a large-sized OLED display panel, the driving signal trace L1 may be a first source-drain trace and a second source-drain trace that are disposed on different layers, and the first source-drain trace and the second source-drain trace are bridged by the bridging section 31101, so that resistance of the display panel trace can be reduced, voltage drop is reduced as much as possible, and a display effect of the display panel is better.

In an embodiment, as shown in fig. 5, the signal trace 311 includes a first electrode trace, and at least one of the metal layers 207 includes a second electrode trace;

a second via hole is formed in the insulating layer 206 between the second electrode trace and the first electrode trace, and the first electrode trace is connected to the second electrode trace through the second via hole.

Specifically, the electrode trace includes, but is not limited to, the gate 204 or the source-drain 205, and a dual-gate or dual-layer source-drain trace structure is formed, so as to achieve an effect of reducing a voltage drop of the metal trace, so that a display image of the display panel is more uniform, and a display effect is better.

Specifically, as shown in fig. 5, the first electrode trace is a second source M2, and the second electrode trace is a structure of a first source M1.

Specifically, the first electrode trace may also be a second gate, and the second electrode trace is a structure of the first gate.

In one embodiment, as shown in fig. 2, the second conductive sub-layer 302 includes a first material layer and a second material layer disposed on the first material layer, the second sub-portion 322 includes a reflective anode 3221, and a transparent anode 3222 disposed on the reflective anode 3221, the first material layer includes the reflective anode 3221, and the second material layer includes the transparent anode 3222.

Specifically, the first material layer includes a metal or an alloy, and may be Ag; the material of the second material layer can be a high work function material, and the specific work function range is above 4.0eV, such as ITO, and the work function range is 4.6 eV-5.1 eV.

It is noted that the high work function material can improve the electron mobility between the anode 300 and the organic light emitting layer 402.

It is understood that by disposing the anode 300 of the anode layer 30 as a three-layer structure, the first material layer is made of metal, and the second material layer and the first conductive sub-layer 301 are made of indium tin oxide, it is possible to improve electron transfer efficiency between the anode 300 and the organic light emitting layer 402, and to prevent the metal of the intermediate layer from being oxidized.

In one embodiment, as shown in fig. 1 and 7c, the reflective anode 3221 coincides with a projection of the transparent anode 3222 in a direction perpendicular to the substrate 10 and in a direction perpendicular to the substrate 10.

Specifically, the overlapping of the projections of the reflective anode 3221 and the transparent anode 3222 means that the reflective anode 3221 and the transparent anode 3222 may be formed by using the same photomask, and a structure in which the projections of the reflective anode 3221 and the transparent anode 3222 are slightly misaligned due to a deviation generated in a manufacturing process is also within the protection scope of the present application.

It can be understood that by arranging the reflective anode 3221 to coincide with the projection of the transparent anode 3222, the manufacturing process of the anode 300 can be simplified, and one optical mask is saved, that is, only two optical masks are required to complete the three-layer anode 300 structure and the signal trace 311, and meanwhile, one metal layer 207 and one insulating layer 206 are also saved, so that the thickness of the display panel is greatly reduced.

In one embodiment, the material of the second material layer includes indium tin oxide, and the material of the first conductive sub-layer 301 and the material of the second material layer are the same.

Specifically, the material of the second material layer is a high work function material, which is beneficial to improve the electron transfer efficiency between the anode 300 and the organic light emitting layer 402.

It is understood that by providing the anode 300 of the anode layer 30 as a three-layer structure in which the first material layer is made of metal and the second material layer and the first conductive sub-layer 301 are made of indium tin oxide, it is possible to improve electron transfer efficiency between the anode 300 and the organic light emitting layer 402 and prevent the metal of the intermediate layer from being oxidized.

The present application further provides a manufacturing method of a display panel, as shown in fig. 6, including the following steps:

s1, providing a substrate 10, and forming a driving device layer 20 on the substrate 10;

s2, forming an anode layer 30 on the driving device layer 20, wherein the anode layer 30 includes a plurality of anodes 300 and signal traces 311, the anodes 300 include a first sub-portion 312 disposed on the driving device layer 20 and a second sub-portion 322 disposed on the first sub-portion 312; the formation of the anode layer 30 includes a first conductive sub-layer 301 formed on the driving device layer 20 and a second conductive sub-layer 302 formed on the first conductive sub-layer 301, where the first conductive sub-layer 301 includes a first sub-portion 312 and the signal trace 311, and the second conductive sub-layer 302 includes the second sub-portion 322.

Specifically, the materials and structures of the substrate 10 and the driving device layer 20 are shown in the substrate 10 and the structure in the above embodiment, and are not described herein again.

Specifically, taking the first conductive sublayer 301 as ITO, the second conductive sublayer 302 includes a first material layer and a second material layer, the first material layer is metallic silver, and the second material layer is ITO as an example, the forming of the anode layer 30 on the second driving device layer 20 includes:

the first conductive sub-layer 301, the first material layer and the second material layer are sequentially coated on the driving device layer 20, and a photoresist PR is coated at a position corresponding to the position where the second sub-portion 322 is formed.

Then, the first material layer and the second material layer are sequentially subjected to photolithography and etching, and the photoresist PR is stripped off, so as to obtain the second sub-portion 322.

The first sub-portion 312 and the signal trace 311 are obtained by performing photolithography, etching and photoresist PR stripping operations on the first sub-portion and the electronic layer using the photoresist PR.

It is understood that, by disposing the anode layer 30 of the display panel of the present invention to include a plurality of anodes 300 and signal traces 311, the anode 300 includes a first sub-portion 312 disposed on the driving device layer 20 and a second sub-portion 322 disposed on the first sub-portion 312, the anode layer 30 includes a first conductive sub-layer 301 disposed on the driving device layer 20 and a second conductive sub-layer 302 disposed on the first conductive sub-layer 301, the first conductive sub-layer 301 includes the first sub-portion 312 and the signal traces 311, the second conductive sub-layer 302 includes the second sub-portion 322, the first conductive sublayer 301 forming the anode 300 can be used as other signal routing lines 311 in the display panel besides being used as a part of the anode 300, so that the material utilization rate in the panel manufacturing process is improved, the number of metal routing layers in the display panel is reduced, the production cost is reduced, and the market competitiveness is enhanced.

In one particular fabrication flow, as shown in figures 7a-7e,

as shown in fig. 7a, a substrate 10 and a driving device layer 20 are provided;

as shown in fig. 7b, the layer operations of the first conductive sub-layer 301, the first material layer and the second material layer are sequentially coated on the driving device layer 20, and a photoresist PR is coated at a position corresponding to the position where the second sub-portion 322 is formed;

as shown in fig. 7c, the first material layer and the second material layer are sequentially subjected to photolithography and etching, and then the photoresist PR is stripped off to obtain the second sub-portion 322;

as shown in fig. 7d, a photoresist PR is coated at the position corresponding to the first sub-portion 312 and the signal trace 311, and the photoresist PR covers a part of the first conductive layer and the entire second sub-portion 322;

as shown in fig. 7e, the first sub-portion 312 and the signal trace 311 are obtained by performing photolithography, etching and stripping operations on the first sub-portion using the photoresist PR.

The application also provides a mobile terminal, which comprises the display panel and a terminal main body, wherein the terminal main body and the display panel are combined into a whole.

In summary, by disposing the anode layer 30 of the display panel of the present invention to include the plurality of anodes 300 and the signal traces 311, the anode 300 includes the first sub-portion 312 disposed on the driving device layer 20 and the second sub-portion 322 disposed on the first sub-portion 312, the anode layer 30 includes the first conductive sub-layer 301 disposed on the driving device layer 20 and the second conductive sub-layer 302 disposed on the first conductive sub-layer 301, the first conductive sub-layer 301 includes the first sub-portion 312 and the signal traces 311, the second conductive sub-layer 302 includes the second sub-portion 322, the first conductive sublayer 301 forming the anode 300 can be used as other signal routing lines 311 in the display panel besides being used as a part of the anode 300, so that the material utilization rate in the panel manufacturing process is improved, the number of metal routing layers in the display panel is reduced, the production cost is reduced, and the market competitiveness is enhanced.

The display panel, the manufacturing method of the display panel, and the mobile terminal provided in the embodiments of the present application are described in detail above, and a specific example is applied in the description to explain the principle and the implementation manner of the present application, and the description of the embodiments above is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (10)

1. A display panel, comprising:

a substrate, a driving device layer disposed on the substrate;

the anode layer is arranged on the driving device layer and comprises a plurality of anodes and signal routing lines, and each anode comprises a first sub-portion arranged on the driving device layer and a second sub-portion arranged on the first sub-portion;

the anode layer includes a first conductive sub-layer disposed on the driving device layer and a second conductive sub-layer disposed on the first conductive sub-layer, the first conductive sub-layer includes a first sub-portion and the signal trace, and the second conductive sub-layer includes a second sub-portion.

2. The display panel according to claim 1, wherein the display panel further comprises a pixel defining layer disposed on the anode layer, the pixel defining layer having an opening corresponding to the anode, the pixel defining layer covering the signal trace;

the driving device layer comprises a plurality of driving devices, the anodes comprise a plurality of anode groups, the anode groups comprise at least two anodes, the signal wiring comprises anode connecting wires, the anodes in the anode groups are connected with each other through the anode connecting wires, and the anodes are connected with the driving devices.

3. The display panel of claim 1, wherein the signal trace comprises a bridge segment; the driving device layer comprises at least one metal layer, insulating layers are arranged between the metal layers and the anode layer in a stacking mode, and at least one metal layer comprises a plurality of driving signal routing lines;

the insulating layer between the driving signal wiring and the bridging section is provided with a first through hole, the bridging section penetrates through the first through hole to be connected with the driving signal wiring, and two different driving signal wirings are bridged through the bridging section.

4. The display panel of claim 3, wherein the signal trace comprises a first electrode trace, and at least one of the metal layers comprises a second electrode trace;

and a second via hole is formed in the insulating layer between the second electrode routing and the first electrode routing, and the first electrode routing is connected with the second electrode routing through the second via hole.

5. The display panel of claim 1, wherein the second conductive sublayer comprises a first material layer and a second material layer disposed on the first material layer, the second sub-portion comprises a reflective anode, and a transparent anode disposed on the reflective anode, the first material layer comprises the reflective anode, and the second material layer comprises the transparent anode.

6. A display panel as claimed in claim 5 characterized in that the projection of the reflective anode and the transparent anode coincide in a direction perpendicular to the substrate.

7. The display panel according to claim 5, wherein a material of the second material layer comprises indium tin oxide.

8. The display panel of claim 7, wherein the first conductive sublayer and the second material layer are the same material.

9. A manufacturing method of a display panel is characterized by comprising the following steps:

providing a substrate, and forming a driving device layer on the substrate;

forming an anode layer on the driving device layer, the anode layer including a plurality of anodes and signal traces, the anodes including a first sub-portion disposed on the driving device layer and a second sub-portion disposed on the first sub-portion; the anode layer is formed by a first conductive sub-layer formed on the driving device layer and a second conductive sub-layer formed on the first conductive sub-layer, the first conductive sub-layer includes a first sub-portion and the signal trace, and the second conductive sub-layer includes a second sub-portion.

10. A mobile terminal comprising the display panel according to any one of claims 1 to 8 and a terminal body, wherein the terminal body is integrated with the display panel.

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