CN114864837A - Display panel, manufacturing method thereof and mobile terminal - Google Patents
Display panel, manufacturing method thereof and mobile terminal Download PDFInfo
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- CN114864837A CN114864837A CN202210493113.4A CN202210493113A CN114864837A CN 114864837 A CN114864837 A CN 114864837A CN 202210493113 A CN202210493113 A CN 202210493113A CN 114864837 A CN114864837 A CN 114864837A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/865—Intermediate layers comprising a mixture of materials of the adjoining active layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
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Abstract
The application provides a display panel, a manufacturing method thereof and a mobile terminal; the display panel comprises a substrate, a magnetization layer and an organic light emitting layer, wherein the magnetization layer and the organic light emitting layer are arranged on the substrate, the organic light emitting layer comprises a plurality of light emitting devices arranged in an array, the magnetization layer is arranged between the substrate and the light emitting devices, the magnetization layer comprises an electromagnetic material, and the organic light emitting layer comprises a magnetic material; according to the organic light emitting device, the organic light emitting layer is made of the magnetic material, the magnetization layer made of the electromagnetic material is arranged between the organic light emitting layer and the substrate, when a plurality of light emitting devices forming the organic light emitting layer are formed through ink jet printing, the magnetization layer is electrified, the magnetization layer generates magnetism, magnetic attraction is generated on organic ink drops, the dropped organic ink drops are adsorbed into an expected pixel area, ink jet printing precision is improved, and poor display such as cross color is reduced.
Description
Technical Field
The application relates to the field of display technologies, in particular to a display panel, a manufacturing method thereof and a mobile terminal.
Background
An Organic Light-Emitting Diode (OLED) display panel is a display device packaged and formed by using Organic materials, and has the advantages of low working voltage, high response speed, high Light-Emitting efficiency, wide viewing angle, wide working temperature and the like, and is beneficial to Light and thin, low power consumption and curved surface design of the display device.
At present, an inkjet printing method is generally used to prepare an organic light emitting film layer in an OLED display panel, and an inkjet head is used to spray organic ink droplets onto corresponding pixel areas. However, in this process, the positions of the organic ink droplets are easily shifted, resulting in the organic ink droplets being sprayed onto unintended pixel regions, thereby risking display cross color.
Disclosure of Invention
The application provides a display panel, a manufacturing method thereof and a mobile terminal, which aim to solve the technical problem of color cross display risk caused by position deviation of organic ink drops in the current OLED display panel ink-jet printing process.
In order to solve the technical problem, the technical scheme provided by the application is as follows:
the application provides a display panel, including:
a substrate;
an organic light emitting layer disposed on the substrate, the organic light emitting layer including a plurality of light emitting devices arranged in an array; and
a magnetization layer disposed between the substrate and the light emitting device, the magnetization layer including an electromagnetic material;
wherein the organic light emitting layer includes a magnetic material.
In the display panel of the present application, the light emitting device includes an anode electrode insulatively disposed on the magnetization layer, the magnetic material being disposed on the anode electrode;
wherein the magnetic material has electrical conductivity, and the magnetic material is in electrical communication with the anode.
In the display panel of the present application, the organic light emitting layer further includes a light emitting polymer material, and the light emitting polymer material and the magnetic material form a plurality of polymer microspheres;
wherein, the luminous polymer material and the magnetic material are alternately coated to form a spherical structure.
In the display panel of the present application, the polymer microspheres include composite microspheres or/and structural microspheres;
the magnetic material in the composite microsphere comprises at least one of an aluminum-nickel-cobalt permanent magnetic alloy material, an iron-chromium-cobalt permanent magnetic alloy material, a permanent ferrite material and a rare earth permanent magnetic material; and the magnetic material in the structural microsphere comprises at least one of a complex, a free radical compound and a molecular compound containing a conjugated system.
In the display panel of the present application, the display panel further includes an array driving layer disposed on the substrate, the organic light emitting layer being disposed on the array driving layer;
wherein the magnetization layer is disposed in the same layer as the array driving layer.
In the display panel of the present application, the display panel further includes an array driving layer disposed on the substrate and a planarization layer disposed on the array driving layer, the organic light emitting layer being disposed on the planarization layer;
wherein the magnetization layer is disposed in the same layer as the planarization layer.
In the display panel of the present application, the distribution density of the magnetic material on the side of the light emitting device close to the magnetization layer is large, and the distribution density of the magnetic material on the side of the light emitting device far from the magnetization layer is small.
In the display panel of the present application, the magnetization layer includes a plurality of magnetization electrodes corresponding to a plurality of the light emitting devices;
the orthographic projection of the light-emitting device on the light-emitting layer is positioned in the corresponding magnetized electrode, and the magnetized electrode is electrically connected with a voltage signal wire.
The application also provides a mobile terminal, the mobile terminal comprises a terminal main body and the display panel, and the terminal main body and the display panel are combined into a whole.
The application also provides a manufacturing method of the display panel, which comprises the following steps:
providing a substrate;
forming a magnetized layer including an electromagnetic material on the substrate;
energizing the magnetization layer to magnetize the magnetization layer to produce magnetism;
printing an organic ink droplet including a magnetic material on the magnetization layer using inkjet printing to form an organic light emitting layer including a plurality of light emitting devices.
Advantageous effects
This application is through with organic luminescent layer sets up to including magnetic material, and organic luminescent layer with set up the magnetic layer including electromagnetic material between the substrate, form in the inkjet printing organic luminescent layer a plurality of during light emitting device, it is right the magnetic layer circular telegram makes the magnetic layer produce magnetism and produces magnetic attraction to organic ink droplet to adsorb the organic ink droplet that drops to in the anticipated pixel region, improve the inkjet printing precision, reduce string of colors etc. and show badly.
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 a first stacked structure of a display panel according to the present application;
FIG. 2 is a schematic diagram of a second stacked structure of a display panel according to the present application;
FIG. 3 is a schematic diagram of a process for forming an organic light-emitting layer according to the present application;
FIG. 4 is a schematic structural diagram of a polymeric microsphere described herein;
fig. 5 is a flow chart of a method for manufacturing a display panel according to the present application.
Description of reference numerals:
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. Furthermore, it should be understood that the detailed description and specific examples, while indicating exemplary embodiments of the invention, are given by way of illustration and explanation only, and are not intended to limit the scope of the invention. In the present application, unless indicated to the contrary, the use of the directional terms "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, and more particularly to the orientation of the figures of the drawings; while "inner" and "outer" are with respect to the outline of the device.
An Organic Light-Emitting Diode (OLED) display panel is a display device packaged and formed by using Organic materials, and has the advantages of low working voltage, high response speed, high Light-Emitting efficiency, wide viewing angle, wide working temperature and the like, and is beneficial to Light and thin, low power consumption and curved surface design of the display device.
At present, an inkjet printing method is generally used to prepare an organic light emitting film layer in an OLED display panel, and an inkjet head is used to spray organic ink droplets onto corresponding pixel areas. However, in this process, the positions of the organic ink droplets are easily shifted, resulting in the organic ink droplets being sprayed onto unintended pixel regions, thereby risking display cross color. The present application proposes the following solutions based on the above technical problems.
Referring to fig. 1 to 4, the present application provides a display panel including a substrate 100, a magnetization layer 300 disposed on the substrate 100, and an organic light emitting layer, the organic light emitting layer including a plurality of light emitting devices 500 disposed in an array, the magnetization layer 300 disposed between the substrate 100 and the light emitting devices 500, the magnetization layer 300 including an electromagnetic material, the organic light emitting layer including a magnetic material 522.
The organic light emitting layer is arranged to comprise the magnetic material 522, the magnetization layer 300 comprising the electromagnetic material is arranged between the organic light emitting layer and the substrate 100, when a plurality of light emitting devices 500 forming the organic light emitting layer are formed through ink jet printing, the magnetization layer 300 is electrified, the magnetization layer 300 generates magnetism and generates magnetic attraction force on organic ink drops, so that the dropped organic ink drops are absorbed into an expected pixel area, the ink jet printing precision is improved, and display defects such as cross color are reduced.
The technical solution of the present application will now be described with reference to specific embodiments. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments.
In this embodiment, the Organic Light Emitting layer may be a magnetic Organic Light-Emitting Diode (OLED) material layer, and the plurality of Light Emitting devices 500 of the Organic Light Emitting layer may be formed by inkjet printing Organic ink droplets in a desired pixel region and then baking the Organic ink droplets to form a film.
In this embodiment, the magnetization layer 300 may be a pure metal layer, such as iron, cobalt, nickel, etc., or an alloy material thereof.
Referring to fig. 1 and 2, in the display panel of the present application, the display panel may further include an array driving layer 200 disposed between the organic light emitting layer and the substrate 100. The array driving layer 200 may include a driving circuit, and the driving circuit may include electrical elements such as a data line, a scan line, and a plurality of thin film transistors arranged in an array, and the data line may be electrically connected to the light emitting device 500 through the thin film transistors, so as to transmit a data signal to the light emitting device 500, thereby implementing a picture display function.
In this embodiment, the display panel may further include a pixel defining layer 600 disposed on the array driving layer 200, wherein a plurality of pixel openings are disposed in the pixel defining layer 600 in an array manner, and a plurality of the light emitting devices 500 are disposed in the plurality of pixel openings.
In this embodiment, the display panel may further include a planarization layer 400 disposed between the organic light emitting layer and the array driving layer 200, and the magnetization layer 300 may be disposed on the same layer as the planarization layer 400 or on a different layer from the planarization layer 400.
In this embodiment, as shown in fig. 1, when the magnetization layer 300 and the planarization layer 400 are disposed in the same layer, the planarization layer 400 needs to cover the surface of the magnetization layer 300 to realize the insulation between the magnetization layer 300 and the organic light emitting layer. At this time, the magnetization layer 300 is closer to the organic light emitting layer, and the magnetic attraction effect between the magnetization layer 300 and the organic ink drop for forming the organic light emitting layer is stronger during ink jet printing (as shown in fig. 3), which is beneficial to improving the magnetic attraction guiding effect on the organic ink drop, and the accuracy and efficiency of ink jet printing are higher.
In the present embodiment, as shown in fig. 2, when the magnetization layer 300 is disposed in a different layer from the planarization layer 400, the magnetization layer 300 may be disposed in the same layer as the array driving layer 200. Specifically, the magnetization layer 300 may be disposed in the same layer as the metal conductive film layer in the array driving layer 200, where the metal conductive film layer includes, but is not limited to, a metal light shielding layer, the data line, the scan line, a gate layer of the thin film transistor, a source drain layer, and the like. At this time, the magnetization layer 300 may be fabricated by one process with one of the metal conductive film layers, which not only simplifies the process, but also facilitates the reduction of the number and thickness of the stacked layers of the display panel, thereby achieving the light and thin effect.
In this embodiment, the magnetization layer 300 may be disposed only in the region corresponding to the light emitting device 500, so that the magnetization layer 300 may generate a magnetic attraction force to the organic ink drop forming the light emitting device 500 and direct to the desired pixel region, thereby avoiding or reducing the deviation of the position of the organic ink drop from the desired pixel region due to the presence of the magnetization layer 300 in other unintended pixel regions, and further reducing cross color.
Referring to fig. 1 and 2, in the display panel of the present application, the light emitting device 500 may include an anode 510 disposed on the magnetization layer 300 in an insulating manner, an organic light emitting portion 520 disposed on the anode 510, and a cathode 530 disposed on the organic light emitting portion 520, and the magnetic material 522 is disposed in the organic light emitting portion 520.
In this embodiment, the anode 510 may be formed above the magnetization layer 300 in advance, and then organic ink droplets are printed on the anode 510 by means of inkjet printing to form the organic light emitting part 520, and then the cathode 530 is formed by means of thin film deposition on the side of the organic light emitting part 520 away from the anode 510.
In this embodiment, the anode 510 may be electrically connected to one of the source/drain electrodes of the thin film transistor in the array driving layer 200, the cathode 530 may be electrically connected to a common voltage terminal, and a voltage signal for the light emitting device 500 to emit light may be formed between the anode 510 and the cathode 530.
In this embodiment, the magnetic material 522 may have conductivity, and the magnetic material 522 may be electrically connected to the anode 510 and the cathode 530. When the light emitting device 500 is operated to emit light, the magnetic material 522 in the organic light emitting portion 520 is electrically connected to the anode 510 and the cathode 530, so that the impedance in the light emitting device 500 can be reduced, the voltage drop caused by the impedance on the whole organic light emitting layer can be effectively reduced, and the display uniformity of the display panel can be improved.
In this embodiment, the display panel may further include an encapsulation layer 700 disposed on the organic light emitting layer, and the encapsulation layer 700 may cover the cathode 530 of the light emitting device 500 and the surface of the pixel defining layer 600 to achieve a good effect of blocking water and oxygen.
Referring to fig. 4, in the display panel of the present application, the organic light emitting part 520 may further include a light emitting polymer material 521, the light emitting polymer material 521 and the magnetic material 522 form a plurality of polymer microspheres, and the light emitting polymer material 521 and the magnetic material 522 are alternately coated to form a spherical structure.
In this embodiment, as shown in (a) and (b) of fig. 4, the center of the spherical structure may be the magnetic material 522, and the surface is sequentially and alternately coated with the light-emitting polymer material and the magnetic material 522 … …; as shown in fig. 4 (c) and (d), the center of the spherical structure may be the luminescent polymer material 521, and the surface of the spherical structure may be further coated with the magnetic material 522 and the luminescent polymer material 521 … … alternately.
In the organic light-emitting layer, besides the light-emitting polymer material 521 complexed with the magnetic material 522 in the polymeric microspheres, the light-emitting polymer material 521 not complexed with the magnetic material 522 may be present in the organic light-emitting layer, and the portion of the light-emitting polymer material 521 not participating in the complexation may serve as a "solvent" of the organic light-emitting layer, while the polymeric microspheres may serve as a "solute" dispersed in the "solvent".
In this embodiment, the light-emitting polymer material 521 may be an organic light-emitting material of a conventional OLED device, and the organic light-emitting material has characteristics of high light-emitting efficiency, electron or hole transport performance, or both, and can be formed into a stable and uniform thin film after vacuum deposition, for example, 8-hydroxyquinoline aluminum (Alq3) which can be used as a light-emitting material alone or as an organic material that can also be used as an electron transport material. Also, for example, a red dopant, a green dopant, a blue dopant, etc. which cannot be used alone as a light emitting material but can emit light by being doped in another host material.
In this embodiment, the polymer microspheres may include at least one of composite microspheres and structural microspheres according to the difference of the magnetic material 522.
In this embodiment, the magnetic material 522 in the composite microsphere may be an inorganic ferromagnetic conductive material, including but not limited to at least one of an aluminum-nickel-cobalt permanent magnetic alloy material, an iron-chromium-cobalt permanent magnetic alloy material, a permanent ferrite material, and a rare earth permanent magnetic material. The magnetic material 522 in the structural microsphere may include at least one of a complex, a radical compound and a compound containing a molecule of a conjugated system, wherein the complex may be a series of compounds formed by surrounding a metal with an organic ligand, and the magnetism of the compound is derived from a central metal ion with a larger spin S; the free radical compound can be a compound containing NO and SN free radicals; the molecular compound containing a conjugated system may be a molecular compound containing a large pi conjugated system.
In this embodiment, the magnetic material 522 and the luminescent polymer material may be compounded by blending, monomer polymerization, surface treatment, etc. to make the blend magnetic.
Through the above arrangement, the magnetic material 522 in the organic light emitting layer and the light emitting polymer material 521 can form a stable combination system, so that the magnetic material 522 can have a better magnetization effect on the organic ink droplets for forming the organic light emitting layer, and the accuracy of inkjet printing can be further improved.
In the display panel of the present application, the distribution density of the magnetic material 522 of the light emitting device 500 on the side close to the magnetization layer 300 is large, and the distribution density of the magnetic material 522 of the light emitting device 500 on the side away from the magnetization layer 300 is small. In other words, in the organic light emitting section 520 of the light emitting device 500, the polymer microspheres are more on the side close to the magnetization layer 300 and less on the side away from the magnetization layer 300.
In this embodiment, when the organic light emitting layer is formed by inkjet printing, the polymer microsphere tends to approach the magnetization layer 300 due to the magnetic attraction from the magnetization layer 300, so as to drive the whole organic ink droplet to drip toward the expected pixel region corresponding to the magnetization layer 300, and the dripped organic ink droplet is dried to form the light emitting device 500, so that the magnetic material 522 on the side of the light emitting device 500 close to the magnetization layer 300 has a larger distribution density and the magnetic material 522 on the side far from the magnetization layer 300 has a smaller distribution density.
Referring to fig. 1 and 2, in the display panel of the present application, the magnetization layer 300 may include a plurality of magnetization electrodes 310 corresponding to a plurality of the light emitting devices 500, and the plurality of magnetization electrodes 310 may be separately disposed to form an array corresponding to the plurality of the light emitting devices 500.
In this embodiment, the orthographic projection of the light emitting device 500 on the light emitting layer can be located in the corresponding magnetized electrode 310, so that the magnetized electrode 310 can sufficiently adsorb the dropped organic ink droplets in a magnetized state, and the organic ink droplets can be uniformly spread in a desired pixel area, thereby improving the display uniformity.
In this embodiment, the magnetization electrode 310 may be electrically connected to a voltage signal line. Specifically, since the plurality of magnetization electrodes 310 may be arranged in an array, a plurality of voltage signal lines may be disposed along a row direction or a column direction of the array, and each voltage signal line may be electrically connected to the magnetization electrode 310 in one row or one column. In the ink-jet printing process, the corresponding voltage signal line can be opened according to the printing position to perform positive voltage signal transmission, so that the dropped organic ink drop is accurately absorbed and guided to the expected pixel region, and after the organic ink drop falls into the expected pixel region, negative voltage transmission can be performed through the voltage signal line, so that the magnetism of the corresponding magnetized electrode 310 disappears, and the interference on the subsequently printed organic ink drop is avoided or reduced.
The embodiment of the application further provides a mobile terminal, which can comprise a terminal main body and the display panel, wherein the terminal main body and the display panel can be combined into a whole.
In the embodiment of the present application, the organic light emitting layer is provided to include the magnetic material 522, and the magnetization layer 300 including the electromagnetic material is provided between the organic light emitting layer and the substrate 100, so that when the plurality of light emitting devices 500 forming the organic light emitting layer are formed by inkjet printing, the magnetization layer 300 is energized to generate magnetism and generate magnetic attraction force for organic ink droplets, so that the dropped organic ink droplets are attracted to an intended pixel region, the inkjet printing precision is improved, and display defects such as cross color are reduced.
The embodiment of the application further provides a manufacturing method of the display panel, and the manufacturing method can be used for manufacturing the display panel in the embodiment. Referring to fig. 5, the method for manufacturing the display panel may include:
s100, a substrate 100 is provided.
S200, forming a magnetization layer 300 including an electromagnetic material on the substrate 100.
S300, applying a current to the magnetization layer 300 to magnetize the magnetization layer 300 to generate magnetism.
S400, printing an organic ink droplet including a magnetic material 522 on the magnetization layer 300 using inkjet printing to form an organic light emitting layer including a plurality of light emitting devices 500.
This application makes display panel through above step, through right magnetization layer 300 circular telegram makes magnetization layer 300 produce magnetism and produces magnetic attraction to organic ink droplet to adsorb the organic ink droplet that drops to in the anticipated pixel region, improve the inkjet and print the precision, effectively reduce because of the display panel that organic ink droplet offset leads to shows unusual such as cross color.
In this implementation, the step S200 may include:
s210, forming an array driving layer 200 on the substrate 100, where the array driving layer 200 may include a data line, a scan line, a thin film transistor, and the like.
S220, forming a magnetization layer 300 including an electro-magnetic material on the array driving layer 200, wherein the magnetization layer 300 may include a plurality of magnetization electrodes 310 arranged in an array.
In this embodiment, the step S300 may include:
s310, the magnetization layer 300 is energized and magnetized at 2400V positive voltage to generate magnetism.
S320, after the ink-jet printing is completed, a negative voltage of 2400V is applied to the magnetization layer 300 to erase the magnetic property.
In this embodiment, the step S400 may include:
s410, forming a planarization layer 400 covering the magnetization layer 300 on the array driving layer 200, and flattening the surface of one side, away from the array driving layer 200, of the planarization layer 400.
S420, forming a conductive film layer on the planarization layer 400, and performing a patterning process to form a plurality of anodes 510 corresponding to the plurality of magnetization electrodes 310, where the conductive film layer may be made of Indium Tin Oxide (ITO).
S430, forming a pixel defining layer 600 on the planarization layer 400, and defining a plurality of pixel openings arranged in an array on the pixel defining layer 600, where the plurality of pixel openings correspond to the plurality of anodes 510 and the plurality of magnetized electrodes 310 in a one-to-one manner.
S440, ink-jet printing magnetic organic ink droplets into the pixel openings, baking the organic ink droplets to form a film, and forming a cathode 530 on the pixel defining layer 600, thereby forming an organic light-emitting layer including a plurality of light-emitting devices 500.
And S450, forming an encapsulation layer 700 on the organic light emitting layer to realize encapsulation of the organic light emitting layer.
The display panel, the manufacturing method thereof, 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 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;
an organic light emitting layer disposed on the substrate, the organic light emitting layer including a plurality of light emitting devices arranged in an array; and
a magnetization layer disposed between the substrate and the light emitting device, the magnetization layer including an electromagnetic material;
wherein the organic light emitting layer includes a magnetic material.
2. The display panel according to claim 1, wherein the light-emitting device comprises an anode provided over the magnetization layer with insulation, and wherein the magnetic material is provided over the anode;
wherein the magnetic material has electrical conductivity, and the magnetic material is in electrical communication with the anode.
3. The display panel according to claim 2, wherein the organic light emitting layer further comprises a light emitting polymer material, and the light emitting polymer material and the magnetic material form a plurality of polymer microspheres;
wherein, the luminous polymer material and the magnetic material are alternately coated to form a spherical structure.
4. The display panel according to claim 3, wherein the polymer microspheres comprise composite microspheres or/and structural microspheres;
the magnetic material in the composite microsphere comprises at least one of an aluminum-nickel-cobalt permanent magnetic alloy material, an iron-chromium-cobalt permanent magnetic alloy material, a permanent ferrite material and a rare earth permanent magnetic material; and the magnetic material in the structural microsphere comprises at least one of a complex, a free radical compound and a molecular compound containing a conjugated system.
5. The display panel according to claim 1, further comprising an array driving layer disposed on the substrate, the organic light emitting layer being disposed on the array driving layer;
wherein the magnetization layer is disposed in the same layer as the array driving layer.
6. The display panel according to claim 1, further comprising an array driving layer disposed on the substrate and a planarization layer disposed on the array driving layer, the organic light emitting layer being disposed on the planarization layer;
wherein the magnetization layer is disposed in the same layer as the planarization layer.
7. The display panel according to claim 1, wherein a distribution density of the magnetic material on a side of the light-emitting device closer to the magnetization layer is larger, and a distribution density of the magnetic material on a side of the light-emitting device farther from the magnetization layer is smaller.
8. The display panel according to claim 1, wherein the magnetization layer comprises a plurality of magnetization electrodes corresponding to a plurality of the light-emitting devices;
the orthographic projection of the light-emitting device on the light-emitting layer is positioned in the corresponding magnetized electrode, and the magnetized electrode is electrically connected with a voltage signal wire.
9. A mobile terminal characterized by comprising a terminal body and the display panel according to any one of claims 1 to 8, the terminal body being integrated with the display panel.
10. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a substrate;
forming a magnetized layer including an electromagnetic material on the substrate;
energizing the magnetization layer to magnetize the magnetization layer to produce magnetism;
printing an organic ink droplet including a magnetic material on the magnetization layer using inkjet printing to form an organic light emitting layer including a plurality of light emitting devices.
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