CN110828518A - Display device, display panel and manufacturing method thereof - Google Patents
Display device, display panel and manufacturing method thereof Download PDFInfo
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- CN110828518A CN110828518A CN201911117205.7A CN201911117205A CN110828518A CN 110828518 A CN110828518 A CN 110828518A CN 201911117205 A CN201911117205 A CN 201911117205A CN 110828518 A CN110828518 A CN 110828518A
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- H10K50/00—Organic light-emitting devices
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- 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
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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Abstract
The disclosure relates to a display device, a display panel and a manufacturing method of the display panel, and relates to the technical field of display. The manufacturing method comprises the following steps: providing a driving back plate; forming an auxiliary electrode and a light-shielding first electrode on the same side of the driving back plate; forming a pixel defining layer on one side of the first electrode and the auxiliary electrode, which is far away from the driving backboard, wherein the first electrode and the auxiliary electrode are exposed out of the pixel defining layer; forming a conductive magnetic layer in a region of the auxiliary electrode exposed by the pixel defining layer; forming a light emitting layer covering the first electrode and the magnetic layer; applying a magnetic field deviating from the driving backboard to the magnetic layer, and removing at least partial area of the magnetic layer and the corresponding light-emitting layer to expose the magnetic layer; and a transparent second electrode is formed on one side of the light-emitting layer, which is far away from the driving backboard, and the second electrode is electrically connected with the auxiliary electrode through the magnetic layer. The manufacturing method disclosed by the invention can simplify the process and save the cost.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a display device, a display panel and a manufacturing method of the display panel.
Background
Currently, an OLED (Organic Light Emitting Diode) display panel has been widely used due to its advantages of wide color gamut and wide viewing angle. Among them, the top emission OLED display panel is more applied. In the existing top-emitting OLED display panel, an auxiliary electrode connected to a cathode needs to be added to enhance the conductivity of the cathode, but the process is complex and the cost is high.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to overcome the above-mentioned deficiencies in the prior art, and provides a display device, a display panel and a method for manufacturing the display panel, which can simplify the process and save the cost.
According to an aspect of the present disclosure, there is provided a method of manufacturing a display panel, including:
providing a driving back plate;
forming an auxiliary electrode and a light-shielding first electrode on the same side of the driving back plate;
forming a pixel defining layer on a side of the first electrode and the auxiliary electrode facing away from the driving back plate, the pixel defining layer exposing the first electrode and the auxiliary electrode;
forming a conductive magnetic layer in a region of the auxiliary electrode exposed by the pixel defining layer;
forming a light emitting layer covering the first electrode and the magnetic layer;
applying a magnetic field deviating from the driving back plate to the magnetic layer, and removing at least partial area of the magnetic layer and the corresponding light-emitting layer to expose the magnetic layer;
and forming a transparent second electrode on one side of the light-emitting layer, which is far away from the driving back plate, wherein the second electrode is electrically connected with the auxiliary electrode through the magnetic layer.
In one exemplary embodiment of the present disclosure, the material of the magnetic layer includes magnetic particles including a magnetic material and a conductive material.
In an exemplary embodiment of the present disclosure, the magnetic material includes at least one of nickel and iron, and the conductive material includes at least one of aluminum and silver.
In one exemplary embodiment of the present disclosure, the magnetic layer is formed by a printing process.
In one exemplary embodiment of the present disclosure, the auxiliary electrode has a thickness greater than the first electrode.
In an exemplary embodiment of the present disclosure, a material of the second electrode includes at least one of indium zinc oxide and indium tin oxide, and a material of the auxiliary electrode includes a metal.
According to an aspect of the present disclosure, there is provided a display panel including:
driving the back plate;
the shading first electrode is arranged on one side of the driving back plate;
the auxiliary electrode and the first electrode are arranged on the same side of the driving back plate;
the pixel defining layer is arranged on one side, away from the driving back plate, of the first electrode and the auxiliary electrode, and the first electrode and the auxiliary electrode are exposed;
the conductive magnetic layer is arranged in the region of the auxiliary electrode exposed by the pixel defining layer;
a light emitting layer covering the first electrode and exposing the magnetic layer;
and the transparent second electrode is arranged on one side of the light-emitting layer, which is deviated from the driving back plate, and is electrically connected with the auxiliary electrode through the magnetic layer.
In one exemplary embodiment of the present disclosure, the material of the magnetic layer includes magnetic particles including a magnetic material and a conductive material.
In an exemplary embodiment of the present disclosure, the magnetic material includes at least one of nickel and iron, and the conductive material includes at least one of aluminum and silver.
According to an aspect of the present disclosure, there is provided a display device including the display panel of any one of the above.
According to the display device, the display panel and the manufacturing method thereof, at least part of the magnetic layer can fall off through the adsorption effect of the magnetic field on the magnetic layer, and the light emitting layer corresponding to the falling-off region is taken away, so that the magnetic layer is exposed, the second electrode can be in contact with the magnetic layer, and then the magnetic layer is electrically connected with the auxiliary electrode, and the conductivity of the second electrode is improved. In the process, the light-emitting layer can be prevented from being patterned by adopting a special patterning process to expose the magnetic layer, only the magnetic field is used for adsorption, the process is simplified, and the material of the fallen magnetic layer can be recycled, so that the cost is saved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural diagram of step S120 in an embodiment of the manufacturing method of the present disclosure.
Fig. 3 is a schematic structural diagram of step S130 in an embodiment of the manufacturing method of the present disclosure.
Fig. 4 is a schematic structural diagram of step S140 in an embodiment of the manufacturing method of the present disclosure.
Fig. 5 is a schematic structural diagram of step S150 in an embodiment of the manufacturing method of the present disclosure.
Fig. 6 is a schematic structural diagram of step S160 in an embodiment of the manufacturing method of the present disclosure.
Fig. 7 is a schematic structural diagram of step S170 in an embodiment of the manufacturing method of the present disclosure.
Description of reference numerals:
1. driving the back plate; 2. a first electrode; 3. an auxiliary electrode; 4. a pixel defining layer; 41. a first opening; 42. a second opening; 5. a magnetic layer; 6. a light emitting layer; 7. a second electrode.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first" and "second" are used merely as labels, and are not limiting on the number of their objects.
In related art, the OLED display panel may include a driving backplane, an anode, a pixel defining layer, a light emitting layer, and a cathode, wherein the anode is disposed on one side of the driving backplane, the pixel defining layer covers a surface of the driving backplane where the anode is disposed and exposes the anode, the light emitting layer covers the pixel defining layer and the anode, and the cathode covers the light emitting layer, and an electrical signal is applied to the light emitting layer through the anode and the cathode to drive the light emitting layer to emit light. Meanwhile, in the top-emitting OLED display panel, the anode is made of a shading material, the cathode is made of a transparent conductive material, and the conductivity of the cathode is low, so that an auxiliary electrode can be arranged on the same layer of the driving back plate and the anode, the pixel defining layer and the light-emitting layer are exposed out of the auxiliary electrode, and the cathode can be lapped with the auxiliary electrode, so that the conductivity of the cathode is enhanced. However, in the manufacturing process, in order to expose the auxiliary electrode before forming the cathode, it is necessary to remove a region of the light-emitting layer covering the auxiliary electrode, which is complicated in process and high in cost.
The disclosed embodiment provides a method for manufacturing a display panel, which is a top-emission OLED display panel, as shown in fig. 1, and the method may include steps S110 to S170, wherein:
step S110, providing a driving backboard;
step S120, forming an auxiliary electrode and a light-shielding first electrode on the same side of the driving back plate;
step S130, forming a pixel defining layer on one side of the first electrode and the auxiliary electrode, which is far away from the driving backboard, wherein the first electrode and the auxiliary electrode are exposed out of the pixel defining layer;
step S140, forming a conductive magnetic layer in the region of the auxiliary electrode exposed by the pixel defining layer;
step S150 of forming a light emitting layer covering the first electrode and the magnetic layer;
step S160, applying a magnetic field deviating from the driving backplane to the magnetic layer, and removing at least a partial region of the magnetic layer and the corresponding light-emitting layer to expose the magnetic layer;
step S170, forming a transparent second electrode on a side of the light-emitting layer away from the driving backplane, where the second electrode is electrically connected to the auxiliary electrode through the magnetic layer.
According to the manufacturing method of the embodiment of the disclosure, at least part of the region of the magnetic layer can be peeled off by the adsorption effect of the magnetic field on the magnetic layer, and the light emitting layer corresponding to the peeled region is taken away, so that the magnetic layer is exposed, the second electrode can be in contact with the magnetic layer, and then the magnetic layer is electrically connected with the auxiliary electrode, so that the conductivity of the second electrode is improved. In the process, the light-emitting layer can be prevented from being patterned by adopting a special patterning process to expose the magnetic layer, only the magnetic field is used for adsorption, the process is simplified, and the material of the fallen magnetic layer can be recycled, so that the cost is saved.
The following describes in detail the steps of the manufacturing method according to the embodiment of the present disclosure:
in step S110, a driving backplane is provided.
As shown in fig. 2, the driving backplate 1 may comprise a substrate and a driving layer, wherein: the substrate may be a hard material such as glass, or a flexible material such as PET (polyethylene terephthalate), and the thickness and shape thereof are not particularly limited. The driving layer may be disposed on the substrate, and the driving layer includes a plurality of driving devices distributed in an array, the driving devices may be thin film transistors, and the type of the thin film transistors may be a top gate type or a bottom gate type structure, and the type and structure of the thin film transistors are not particularly limited.
Taking a top gate type thin film transistor as an example, the driving layer may include an active layer, a gate insulating layer, a gate electrode, a dielectric layer, and a source electrode and a drain electrode, wherein the active layer may be disposed on one side of the substrate, the gate insulating layer covers one side of the active layer away from the substrate, the gate electrode is disposed on one side of the gate insulating layer away from the substrate and opposite to the active layer, the dielectric layer covers the gate electrode and the gate insulating layer, and the source electrode and the drain electrode are both disposed on one side of the dielectric layer away from the substrate and connected to the active layer through. In addition, the driving layer may further include a planarization layer covering the source electrode, the drain electrode, and the dielectric layer.
In step S120, an auxiliary electrode and a light-shielded first electrode are formed on the same side of the driving backplane.
As shown in fig. 2, the first electrode 2 may serve as an anode of the OLED device, and may be a light-shielding structure, and the material thereof may include one or more of metal, metal oxide and alloy material. The first electrode 2 may have a single-layer or multi-layer structure as long as it is capable of conducting electricity and shielding light. The thickness of the first electrode 2 is not particularly limited, and may be, for example, a thickness of
The material of the auxiliary electrode 3 may also include one or more of metal, metal oxide, and alloy material, but is not limited to be identical to the material of the first electrode 2 as long as the conductivity is greater than that of a transparent conductive material such as ITO (indium tin oxide), IZO (indium zinc oxide), and the like. The number of the first electrode 2 and the auxiliary electrode 3 may be plural and spaced from each other to avoid electrical connection therebetween. Further, the auxiliary electrode 3 may have a thickness greater than that of the first electrode 2 in order to improve the conductive performance.
In some embodiments of the present disclosure, as shown in fig. 2, the auxiliary electrode 3 may be disposed at the same layer as the first electrode 2 and be of the same material so as to be formed through a one-time patterning process, which may be a photolithography process. For example, the auxiliary electrode 3 and the first electrode 2 may be formed on the surface of the planarization layer facing away from the substrate by the same patterning process. The auxiliary electrode 3 is located in a region other than the first electrode 2 and is spaced apart from the first electrode 2. It should be noted that, if the thickness of the auxiliary electrode 3 is larger than that of the first electrode 2, the auxiliary electrode 3 and the first electrode 2 may be formed by a half-tone mask process.
In some embodiments of the present disclosure, the auxiliary electrode 3 may also be formed separately from the first electrode 2 by a patterning process, instead of being formed at a time, so that the thickness and material of the auxiliary electrode 3 may be different from those of the first electrode 2 in order to satisfy the requirement of improving the conductive performance of the second electrode 7 without affecting the performance of the first electrode 2, for example, the thickness of the auxiliary electrode 3 may be greater than that of the first electrode 2.
It should be noted that, in order to avoid damage to the first electrode 2 and the auxiliary electrode 3 caused by the magnetic field, a non-magnetic conductive material may be used as the material of the first electrode 2 and the auxiliary electrode 3.
In step S130, a pixel defining layer is formed on a side of the first electrode and the auxiliary electrode facing away from the driving backplane, and the pixel defining layer exposes the first electrode and the auxiliary electrode.
As shown in fig. 3, the pixel defining layer 4 is made of an insulating material, and covers the first electrode 2 and the auxiliary electrode 3 on a side away from the driving backplane 1, and exposes the first electrode 2 and the auxiliary electrode 3.
In some embodiments of the present disclosure, as shown in fig. 3, a first opening 41 and a second opening 42 may be formed on the pixel defining layer 4, wherein the number of the first openings 41 is the same as that of the first electrodes 2, and the first electrodes 2 are exposed in a one-to-one correspondence manner, and the shape of the first openings 41 is not particularly limited herein. The number of the second openings 42 is the same as that of the auxiliary electrodes 3, and the auxiliary electrodes 3 are exposed in a one-to-one correspondence manner, and the shape of the second openings 42 is not particularly limited herein.
In some embodiments of the present disclosure, the thickness of the auxiliary electrode 3 is greater than that of the first electrode 2, an opening exposing the first electrode 2 may be formed on the pixel defining layer 4, and the thickness of the area of the pixel defining layer 4 corresponding to the auxiliary electrode 3 may be reduced until the auxiliary electrode 3 is exposed, that is, the surface of the pixel defining layer 4 facing away from the driving back plate 1 is flush with the surface of the auxiliary electrode 3 facing away from the driving back plate 1. Of course, the pattern and thickness of the pixel defining layer 4 can also be controlled to directly make the thickness of the pixel defining layer 4 the same as that of the auxiliary electrode 3, that is, the surface of the auxiliary electrode 3 away from the driving backplane 1 is flush with the surface of the pixel defining layer 4 away from the driving backplane 1, so as to expose the auxiliary electrode 3, and the auxiliary electrode 3 does not need to be exposed by reducing the thickness.
In step S140, a conductive magnetic layer is formed in a region where the auxiliary electrode is exposed by the pixel defining layer.
As shown in fig. 4, the magnetic layer 5 may be disposed on the surface of the auxiliary electrode 3 facing away from the driving back plate 1, and the magnetic layer 5 may include a conductive material and a magnetic material, or adopt a material having both conductivity and magnetism.
In some embodiments of the present disclosure, the magnetic layer 5 may include magnetic particles, and the magnetic particles may cause at least a portion of the magnetic layer 5 to fall off under the action of the magnetic field, and the thickness of the magnetic layer 5 may be reduced as the magnetic layer 5 falls off. For example, the magnetic particles may include a magnetic material and a conductive material, and the magnetic material may be metallic magnetic nanoparticles, including, for example, at least one of nickel and iron, which, of course, may also include cobalt and other magnetic materials. The conductive material may be a metallic material that may include at least one of aluminum and silver, although other conductive materials may also be included. If both the magnetic material and the conductive material have conductivity, the conductivity of the conductive material can be higher than that of the magnetic material, so as to improve the conductivity of the magnetic layer 5.
In some embodiments of the present disclosure, the magnetic layer 5 may be formed by a printing process, for example, by means of inkjet printing on the surface of the auxiliary electrode 3 facing away from the driving back plate 1.
In step S150, a light emitting layer covering the first electrode and the magnetic layer is formed.
As shown in fig. 5, the light emitting layer 6 may cover the first electrode 2 and the magnetic layer 5, and may further cover the pixel defining layer 4, for example, the light emitting layer 6 may include a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer, which are sequentially stacked in a direction away from the driving backplane 1. The light emitting layer 6 may be formed by one or more evaporation processes, and the process is not particularly limited.
In step S160, a magnetic field away from the driving backplane is applied to the magnetic layer, and at least a partial region of the magnetic layer and the corresponding light-emitting layer are removed to expose the magnetic layer.
As shown in fig. 6, the material of the magnetic layer 5 can fall off under the action of the magnetic field, so that the thickness of the magnetic layer is reduced, and the fallen magnetic layer 5 can take away the light emitting layer 6 covered thereon, thereby exposing the magnetic layer 5. For example, an electromagnet may be disposed on a side of the magnetic layer 5 facing away from the driving back plate 1, and a magnetic field facing away from the driving back plate 1 is applied to the magnetic layer 5. The method of applying the magnetic field is not particularly limited as long as at least a partial region of the magnetic layer 5 can be peeled off. The detached magnetic layer 5 can be recycled to reduce the cost.
In step S170, a transparent second electrode is formed on a side of the light-emitting layer facing away from the driving backplane, and the second electrode is electrically connected to the auxiliary electrode through the magnetic layer.
As shown in fig. 7, the second electrode 7 covers the light-emitting layer 6, and may serve as a cathode, and together with the light-emitting layer 6 and the first electrode 2, forms an OLED light-emitting device, and an electrical signal may be applied to the light-emitting layer 6 through the first electrode 2 and the second electrode 7, so that the light-emitting layer 6 emits light. The second electrode 7 is a transparent structure, and the material of the second electrode 7 is a transparent conductive material, for example, the material of the second electrode 7 includes at least one of indium zinc oxide and indium tin oxide, so as to form a top-emitting OLED light-emitting device with the first electrode 2 of the light shielding structure.
The display substrate of the embodiment of the present disclosure may include a plurality of pixels, each of which includes a plurality of sub-pixels having different colors, and the light emitting layer 6 may include a plurality of light emitting units facing the first electrodes 2 one by one. Wherein each sub-pixel comprises a first electrode 2 and a light emitting unit and a second electrode 7 corresponding to the first electrode 2, i.e. one sub-pixel comprises one OLED light emitting device, while the respective sub-pixels can share the second electrode 7.
In some embodiments of the present disclosure, in the light emitting layer 6, the light emitting units corresponding to the sub-pixels of the same pixel may directly emit monochromatic light of different colors, such as red (R), green (G), and blue (B). Therefore, the light emitting layer 6 can be formed by a plurality of evaporation processes, and light emitting units of one color can be formed at a time.
In some embodiments of the present disclosure, the light-emitting layers 6 may emit light of the same color, for example, the light-emitting layers 6 may emit white light. In order to realize color display, the display panel may further include a color filter substrate, the color filter substrate may include a substrate and a color filter layer, wherein the substrate may be disposed on a side of the second electrode 7 away from the driving backplane 1, the color filter layer may be disposed on a surface of the substrate close to the driving backplane 1, and the color filter layer may include a light shielding portion and a light filtering portion, the light filtering portion is directly opposite to each light emitting unit of the light emitting layer 6, the light filtering portion may form a sub-pixel with the first electrode 2, the light emitting unit and the second electrode 7, colors of the light filtering portions of different sub-pixels of the same pixel are different, and the colors of the light filtering portions may include red (R), green (G) and blue (B), thereby realizing color display. The light shielding part can shield the regions except the sub-pixels, including the region corresponding to the shielding auxiliary electrode 3.
Of course, in other embodiments of the present disclosure, the above embodiments may be combined, the light emitting layer 6 includes a light emitting unit capable of directly emitting monochromatic light and a light emitting unit capable of emitting white light, the color filter substrate may be of a transparent structure instead of the light filter portion corresponding to the position of the light emitting unit capable of emitting monochromatic light, and the light filter portion may be provided corresponding to the position of the light emitting unit capable of emitting white light, as long as the color of different sub-pixels of the same pixel is different, which is not described in detail herein.
It should be noted that although the various steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
The present disclosure provides a display panel, as shown in fig. 7, the display panel may include a driving backplane 1, a first electrode 2, an auxiliary electrode 3, a pixel defining layer 4, and a second electrode 7, wherein:
the first electrode 2 and the auxiliary electrode 3 are arranged on the same side of the driving back plate 1, and the first electrode 2 is of a light shielding structure. The pixel defining layer 4 is disposed on a side of the first electrode 2 and the auxiliary electrode 3 away from the driving back plate 1, and the first electrode 2 and the auxiliary electrode 3 are exposed. The magnetic layer 5 is disposed in a region of the auxiliary electrode 3 exposed by the pixel defining layer 4, and the magnetic layer 5 is conductive. The light emitting layer 6 covers the first electrode 2 and exposes the magnetic layer 5. The second electrode 7 is disposed on a side of the light-emitting layer 6 away from the driving backplane 1, and is electrically connected to the auxiliary electrode 3 through the magnetic layer 5.
In the display panel according to the embodiment of the present disclosure, which can be manufactured by the manufacturing method according to the above embodiment, the specific details of the driving back plate 1, the first electrode 2, the auxiliary electrode 3, the pixel defining layer 4, and the second electrode 7 have been described in detail in each step of the corresponding manufacturing method, and thus the detailed structure and advantageous effects will not be described in detail herein.
The embodiment of the present disclosure further provides a display device, including the display panel of any of the above embodiments, and the specific structure of the display panel is not described in detail herein. Since the display device adopts the display panel, the display panel and the display device can solve the same technical problem and have the same beneficial effect. The display device of the embodiment of the present disclosure can be used for electronic devices such as a mobile phone, a tablet computer, or electronic paper.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. A method of manufacturing a display panel, comprising:
providing a driving back plate;
forming an auxiliary electrode and a light-shielding first electrode on the same side of the driving back plate;
forming a pixel defining layer on a side of the first electrode and the auxiliary electrode facing away from the driving back plate, the pixel defining layer exposing the first electrode and the auxiliary electrode;
forming a conductive magnetic layer in a region of the auxiliary electrode exposed by the pixel defining layer;
forming a light emitting layer covering the first electrode and the magnetic layer;
applying a magnetic field deviating from the driving back plate to the magnetic layer, and removing at least partial area of the magnetic layer and the corresponding light-emitting layer to expose the magnetic layer;
and forming a transparent second electrode on one side of the light-emitting layer, which is far away from the driving back plate, wherein the second electrode is electrically connected with the auxiliary electrode through the magnetic layer.
2. The manufacturing method according to claim 1, wherein the material of the magnetic layer includes magnetic particles including a magnetic material and a conductive material.
3. The manufacturing method according to claim 2, wherein the magnetic material includes at least one of nickel and iron, and the conductive material includes at least one of aluminum and silver.
4. The manufacturing method according to claim 1, wherein the magnetic layer is formed by a printing process.
5. The manufacturing method according to claim 1, wherein the auxiliary electrode has a thickness larger than that of the first electrode.
6. The manufacturing method according to claim 1, wherein a material of the second electrode includes at least one of indium zinc oxide and indium tin oxide, and a material of the auxiliary electrode includes a metal.
7. A display panel, comprising:
driving the back plate;
the shading first electrode is arranged on one side of the driving back plate;
the auxiliary electrode and the first electrode are arranged on the same side of the driving back plate;
the pixel defining layer is arranged on one side, away from the driving back plate, of the first electrode and the auxiliary electrode, and the first electrode and the auxiliary electrode are exposed;
the conductive magnetic layer is arranged in the region of the auxiliary electrode exposed by the pixel defining layer;
a light emitting layer covering the first electrode and exposing the magnetic layer;
and the transparent second electrode is arranged on one side of the light-emitting layer, which is deviated from the driving back plate, and is electrically connected with the auxiliary electrode through the magnetic layer.
8. The display panel according to claim 7, wherein the material of the magnetic layer comprises magnetic particles, and the magnetic particles comprise a magnetic material and a conductive material.
9. The display panel according to claim 8, wherein the magnetic material comprises at least one of nickel and iron, and the conductive material comprises at least one of aluminum and silver.
10. A display device characterized by comprising the display panel according to any one of claims 7 to 9.
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| CN112271182A (en) * | 2020-09-12 | 2021-01-26 | 昆山工研院新型平板显示技术中心有限公司 | Preparation method of display panel and display panel |
| CN113257854A (en) * | 2020-05-06 | 2021-08-13 | 广东聚华印刷显示技术有限公司 | Display panel, preparation method thereof and display device |
| CN113363302A (en) * | 2021-06-02 | 2021-09-07 | 南京昀光科技有限公司 | Display panel and manufacturing method thereof |
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