WO2020164467A1 - 显示面板、显示面板的制备方法、显示装置 - Google Patents

显示面板、显示面板的制备方法、显示装置 Download PDF

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Publication number
WO2020164467A1
WO2020164467A1 PCT/CN2020/074702 CN2020074702W WO2020164467A1 WO 2020164467 A1 WO2020164467 A1 WO 2020164467A1 CN 2020074702 W CN2020074702 W CN 2020074702W WO 2020164467 A1 WO2020164467 A1 WO 2020164467A1
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Prior art keywords
magnetic
flexible substrate
display panel
display
substrate
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PCT/CN2020/074702
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English (en)
French (fr)
Inventor
牛亚男
田宏伟
孙中元
牛菁
陈蕾
黄维
焦志强
Original Assignee
京东方科技集团股份有限公司
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Priority to US17/041,811 priority Critical patent/US20210027674A1/en
Publication of WO2020164467A1 publication Critical patent/WO2020164467A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • 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
    • 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
    • H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • This application belongs to the field of display technology, and specifically relates to a display panel, a method for manufacturing the display panel, and a display device.
  • OLED Organic Light-Emitting Diode
  • the present disclosure provides a display panel, a preparation method of the display panel, and a display device.
  • the display panel includes a flexible substrate and a support substrate, the support substrate supports the flexible substrate; a plurality of display units are arranged on the flexible substrate; wherein, the display panel further includes: A magnetic unit attached to the flexible substrate; a second magnetic unit attached to the support substrate; the first magnetic unit and the second magnetic unit are used to pass the first magnetic element and the second magnetic element The action of the magnetic field between the magnetic elements makes the flexible substrate adhere to the supporting substrate.
  • the first magnetic unit includes a plurality of first magnetic devices; and the first magnetic device is disposed on a side of the flexible substrate away from the display unit, and the plurality of first magnetic devices The magnetic device corresponds to the plurality of display units one to one.
  • the side of the flexible substrate facing away from the display unit has a plurality of first grooves, and the plurality of first grooves correspond to the plurality of display units one-to-one;
  • Each of a magnetic device is arranged in a corresponding one of the first grooves.
  • the first magnetic unit includes a plurality of first magnetic devices; the first magnetic device is disposed on a side of the flexible substrate close to the display unit, and the plurality of first magnetic devices The devices correspond to the multiple display units one-to-one.
  • the display panel includes a plurality of display areas and a space between the display areas; the display unit is disposed in the display area; the space includes a connecting part and a hollow part;
  • the first magnetic unit includes a magnetic film material, and the magnetic film material is disposed on the connection part and/or the hollow part of the spacer area.
  • the magnetic film material includes an elastic magnetic film material.
  • the material of the first magnetic unit includes: silica gel doped with magnetic particles.
  • the magnetic particles include magnetic Fe 3 O 4 , NiFe nano-spheres and quantum dot micro-spheres.
  • the first magnetic device includes a magnetic coil or a magnetic metal.
  • the second magnetic unit is arranged on a side of the support substrate close to the flexible substrate, and the second magnetic unit is arranged opposite to the first magnetic unit.
  • the second magnetic unit includes a plurality of second magnetic devices, and the second magnetic devices are magnetic coils or magnetic metals.
  • the side surface of the support substrate close to the flexible substrate has a plurality of second grooves, and the plurality of grooves correspond to the plurality of display units one-to-one; the plurality of second magnetic Each of the devices is arranged in a corresponding one of the second grooves.
  • the plurality of second magnetic devices are disposed on the support substrate; and the display panel further includes a stretchable back film disposed between the support substrate and the flexible substrate.
  • the support substrate and the second magnetic unit are integrally formed of magnetic metal; and the display panel further includes a stretchable back film disposed between the support substrate and the flexible substrate .
  • the first magnetic device is an electromagnetic coil and/or the second magnetic device is an electromagnetic coil; the display panel further includes a power supply for applying current to the electromagnetic coil.
  • the surface of the supporting substrate supporting the flexible substrate is a curved surface.
  • the present disclosure also provides a method for preparing the above-mentioned display panel, including: forming a flexible substrate so that a plurality of display units are formed on the flexible substrate; forming a support substrate; forming an attachment on one side of the flexible substrate A first magnetic unit on the first flexible substrate; forming a second magnetic unit attached to the supporting substrate on one side of the supporting substrate; and assembling the flexible substrate and the supporting substrate so that The supporting substrate supports the flexible substrate, and uses the magnetic field between the first magnetic unit and the second magnetic unit to bond the flexible substrate to the supporting substrate.
  • the first magnetic unit includes a plurality of first magnetic devices
  • the forming the flexible substrate includes: forming a plurality of grooves in the display area on the first side of the flexible substrate through a patterning process
  • a plurality of display units are formed on the second side of the flexible substrate opposite to the first side, so that the plurality of display units correspond to the plurality of grooves one to one; in the plurality of grooves
  • the plurality of first magnetic devices are respectively formed in.
  • forming a second magnetic unit attached to the support substrate on one side of the support substrate includes: forming a plurality of magnetic units on the support substrate at positions corresponding to the plurality of first magnetic devices.
  • a second magnetic device; and forming a stretchable back film on the support substrate; and assembling the flexible substrate with the support substrate includes installing the flexible substrate on the stretchable back film.
  • the present disclosure also provides a display device including the above-mentioned display panel.
  • FIG. 1A is a schematic cross-sectional view of the structure of a display panel according to an embodiment of the disclosure
  • 1B is a schematic cross-sectional view of the structure of the display panel of the embodiment of the disclosure.
  • 1C is a plan view of the structure of the display panel of the embodiment of the disclosure.
  • 1D is a schematic cross-sectional view of the structure of the display panel according to the embodiment of the disclosure.
  • 1E is a schematic cross-sectional view of the structure of a display panel according to an embodiment of the disclosure.
  • 1F is a schematic cross-sectional view of the structure of the display panel of the embodiment of the disclosure.
  • FIG. 2A is a schematic structural diagram of a display panel according to an embodiment of the disclosure.
  • 2B is a schematic structural diagram of a display panel according to an embodiment of the disclosure.
  • FIG. 3 is a schematic diagram of forming a rigid substrate in a method for manufacturing a display panel according to an embodiment of the disclosure
  • FIG. 4 is a schematic diagram of forming a flexible substrate in a method for manufacturing a display panel according to an embodiment of the disclosure
  • FIG. 5 is a schematic diagram of forming an OLED device in a method of manufacturing a display panel according to an embodiment of the disclosure
  • FIG. 6 is a schematic diagram of forming the first magnetic device in the method of manufacturing the display panel of the embodiment of the disclosure.
  • FIG. 7 shows a flow chart of a method of manufacturing a display panel of the present disclosure.
  • OLED display panels have gradually transitioned from bendable, folded, to stretchable, which is suitable for spherical display or stereoscopic display.
  • Related stretchable OLED display panels adopt a display island-connection bridge-clearance area structure.
  • the shape of the clearance area will change, and the display island will be subjected to the shear stress of the connected bridges, and will often be distorted. After the display island is distorted, it will cause display mura, graphic distortion, and graphic distortion of the OLED display panel.
  • the display panel provided by the embodiment of the present disclosure is particularly suitable for a stretchable display panel.
  • the stretchable display panel includes a flexible substrate 1 and a supporting substrate 2.
  • the flexible substrate 1 includes: a plurality of display areas 13 (also referred to as display islands) and spacer areas between the display areas 13.
  • the spacer area of the flexible substrate 1 usually includes a hollow part 11 and a connecting part 12, and adjacent display areas are separated by the hollow part 11 and connected by the connecting part 12.
  • a display unit is provided in the display area 13, and the display unit may include one or more display devices 3.
  • the display unit includes only one display device 3 as an example for description.
  • the display device 3 may be an organic electroluminescent diode or an inorganic light-emitting diode, and the type of the display device 3 is not limited in the embodiment of the present disclosure.
  • this embodiment provides a display panel, which includes a flexible substrate 1 and a supporting substrate 2.
  • the supporting substrate 2 supports the flexible substrate 1; the display area of the flexible substrate 1 is provided with a display panel. unit.
  • the display panel further includes: a first magnetic unit and a second magnetic unit; the first magnetic unit and the second magnetic unit are used for bonding the flexible substrate 1 and the supporting substrate 2 through the action of the magnetic field between them.
  • the shape of the hollow part of the spacer area of the flexible substrate 1 will change to adapt to the stretching of the display panel.
  • the display area of the flexible substrate 1 is prone to distortion, resulting in the flexible substrate 1
  • the light emitting direction of the upper display device 3 is different, which causes the phenomenon of poor display.
  • the magnetic field magnetic force
  • the magnetic field is applied to prevent distortion of the display area of the flexible substrate 1 and at the same time ensure the adhesion and stability of the flexible substrate 1 in each display area and the title substrate, thereby ensuring that the display panel has a good display effect.
  • the magnetic field in this embodiment acts as a constant magnetic field or a low-frequency magnetic field with low intensity (the intensity is sufficient to balance the shear stress, for example, it can be 0.01 to 10 H).
  • the intensity is sufficient to balance the shear stress, for example, it can be 0.01 to 10 H.
  • Maxwell electromagnetic wave theory
  • a changing magnetic field generates an electric field, and the interference of the magnetic field on the circuit is mainly caused by electromagnetic waves generated by the change of the magnetic field.
  • the low-frequency magnetic field or constant magnetic field in this embodiment will not radiate electromagnetic waves, nor will the low-intensity magnetic field It has a greater impact on the circuit in the display panel, that is, it will not affect the normal display of the display panel.
  • an electromagnetic shielding structure (adding a whole layer of metal (grounded or connected to a constant voltage)) can be provided in the display panel to avoid the effect of the magnetic field between the first magnetic unit and the second magnetic unit from affecting the display device, driving circuit, etc.
  • the first magnetic unit may be arranged on the side of the flexible substrate 1 and attached to the flexible substrate 1; the second magnetic unit may be arranged on the side of the supporting substrate 2 and attached to the supporting substrate 2 and connected to the first magnetic unit.
  • a magnetic unit corresponds to form a magnetic field.
  • the attractive force between the first magnetic unit and the second magnetic unit is used to attach the flexible substrate 1 to the supporting substrate 2, as shown in FIGS. 1A, 1B, and 1D; or, the first magnetic unit can be arranged on the flexible substrate.
  • the bottom 1 side is attached to the flexible substrate 1.
  • the second magnetic unit can be correspondingly arranged on the side of the flexible substrate 1 away from the support substrate 2, and attached to the support substrate 2, using the gap between the first magnetic unit and the second magnetic unit The repulsive force makes the flexible substrate 1 adhere to the supporting substrate 2, as shown in FIG. 1E.
  • the first magnetic unit and the second magnetic unit correspond to that the orthographic projection of the first magnetic unit on the flexible substrate 1 and the orthographic projection of the second magnetic unit on the flexible substrate 1 are at least partially overlapped, and in some implementations In an example, the orthographic projection of the first magnetic unit on the flexible substrate 1 and the orthographic projection of the second magnetic unit on the flexible substrate 1 completely overlap.
  • the first magnetic unit is provided on the side of the flexible substrate 1 and attached to the flexible substrate 1
  • the second magnetic unit can be provided on the side of the support substrate 2 and attached to the support substrate 2, as an example for specific description. , As shown in Figure 1A.
  • the first magnetic unit may include a plurality of first magnetic devices 41; the first magnetic device 41 may be disposed on a side of the flexible substrate 1 away from the display unit, and the first magnetic device 41 corresponds to the display unit one to one.
  • the second magnetic unit may include a plurality of second magnetic devices 5, such as magnetic coils or magnetic metals, arranged on the supporting substrate 2, and the second magnetic devices 5 and the first magnetic devices 41 are in one-to-one correspondence. As shown in FIG.
  • the supporting substrate 2 is located on the side of the flexible substrate 1 away from the display unit, and the first magnetic device 41 is arranged on the side of the flexible substrate 1 away from the display unit, so that the first magnetic device 41 and the second The effect of the magnetic field between the magnetic devices 5 is better, which facilitates the shaping of the flexible substrate 1.
  • a stretchable back film 22 is also provided between the support substrate 2 and the flexible substrate 1, which separates the first magnetic device 41 and the second magnetic device 5, using the attraction between the two The force can closely adhere the flexible substrate 1 attached to the first magnetic device 41 and the support substrate 2 attached to the second magnetic device 4 together.
  • the stretchable back film 22 may be made of materials such as PDMS.
  • the present application is not limited to the embodiment in which the second magnetic device 5 is provided on the support substrate 2 as shown in FIG. 1A and the stretchable back film 22 is provided between the flexible substrate 1 and the support substrate 2.
  • the second magnetic device 5 is disposed in the groove 10 of the supporting substrate 2 and is spaced apart from the first magnetic device 41.
  • the first magnetic device 41 may correspond to the display unit one-to-one. Specifically, the first magnetic device 41 may be disposed on the side of the display unit close to the flexible substrate 1, as shown in FIG. 1D, or on the flexible substrate 1 away from the display unit. One side, as shown in Figure 1A and Figure 1B.
  • the first magnetic device 41 is arranged on the side of the flexible substrate 1 facing away from the display unit, that is, the first magnetic device 41 is arranged on the back of each display area of the flexible substrate 1, so that the first magnetic device 41 Try to be as close to the second magnetic device 5 as possible to ensure that the flexible substrate 1 of each display area and the supporting substrate 2 are well bonded to the greatest extent, so that the light emitting direction of each display device 3 is regular and orderly, and due to the commonly used display in display panels of related technologies
  • the device is a top-gate OLED device, so the magnetic unit formed on the back of the flexible substrate 1 has less influence on the display panel.
  • the flexible substrate 1 can be first stretched to a desired shape, and then the first magnetic unit and the second magnetic unit can be controlled to generate a magnetic field (specifically, energization can be used to control the generation of the magnetic field), so that the flexible substrate 1 and The supporting substrate 2 adheres well.
  • a magnetic field specifically, energization can be used to control the generation of the magnetic field
  • one first magnetic device 41 may correspond to one display device 3, or one first magnetic device 41 may correspond to Multiple display devices 3 in one display unit.
  • the first magnetic device 41 is embedded on the back of the flexible substrate 1.
  • the flexible substrate 1 has grooves on the side facing away from the display unit, and the grooves correspond to the display unit one by one.
  • the first magnetic device 41 is disposed in the groove.
  • the material of the first magnetic device 41 may include silica gel doped with magnetic particles.
  • the silica gel material is a printing ink material widely used in the field, and the printing effect is good, and the adhesion between it and the flexible substrate 1 is relatively firm.
  • the flexible substrate 1 and the first magnetic unit can still be firmly attached to each other.
  • the magnetic particles can be nano-spheres such as Fe 3 O 4 , NiFe, and quantum dot micro-spheres with magnetism.
  • the first magnetic device 41 may also be a structure such as a magnetic coil or a magnetic metal.
  • the magnetic metal can be a metal that has magnetism itself, or can be a metal that can have magnetism after being energized.
  • the display panel shown in FIG. 1A also includes an electromagnetic shielding structure 21, which may be a whole layer of metal disposed on the upper surface of the first magnetic device 41, which is used to connect the first magnetic device 41 and the second magnetic device 5 Interaction is shielded to avoid interference to the display unit.
  • an electromagnetic shielding structure 21 which may be a whole layer of metal disposed on the upper surface of the first magnetic device 41, which is used to connect the first magnetic device 41 and the second magnetic device 5 Interaction is shielded to avoid interference to the display unit.
  • FIG. 1F shows a display panel according to an embodiment of the present invention, in which the supporting substrate is entirely composed of the second magnetic device 5.
  • the display panel of FIGS. 1A to 1F further includes a packaging unit 6 provided on the display device 3, which is used for packaging and protecting the entire display device.
  • this embodiment provides a display panel, wherein the first magnetic unit is arranged on the side of the flexible substrate 1 and attached to the flexible substrate 1, and the second magnetic unit can be arranged on the supporting substrate 2 accordingly. On one side, attached to the supporting substrate 2.
  • the first magnetic unit may include a magnetic film 42, and the magnetic film 42 may be disposed in a spacer area of the flexible substrate 1.
  • the flexible substrate 1 has a patterned structure, and the hollow portion of the flexible substrate 1 is not provided with the display device 3, and the first magnetic unit (specifically, the magnetic film 42) can be provided on the display unit (that is, the flexible The hollow part between the display area of the substrate 1).
  • the first magnetic unit specifically, the magnetic film 42
  • the magnetic film 42 can perform a position fixing function for each display unit in the display substrate.
  • the magnetic field force between the first magnetic unit and the second magnetic unit can be used to suppress the irregular deflection of the display unit, so that the flexible substrate 1 is stretched while maintaining good adhesion to the support substrate 2. Therefore, it is ensured that the display panel has a good display effect.
  • the magnetic film material 42 can also be arranged at the position of the connection part of the flexible substrate 1, and the magnetic film material 42 at the connection part makes the flexible substrate 1 and the support substrate 2 fit well, and suppresses the display
  • the flexible substrate 1 in the zone is twisted, so that the flexible substrate 1 and the supporting substrate 2 are well bonded as a whole.
  • the magnetic film 42 has elasticity.
  • the use of the elastic magnetic film 42 can better adapt to the stretching of the display panel, so that the deformation of the hollow portion during the stretching process of the display panel is well adapted to effectively restrict the deflection of the display unit.
  • the material of the magnetic film 42 in this embodiment may also be silica gel doped with magnetic particles.
  • the magnetic particles may be nano-spheres such as Fe 3 O 4 , NiFe, etc., and quantum dot micro-spheres with magnetism.
  • the other structures of the second magnetic device in FIG. 2A and FIG. 2B are similar to the structure in FIG. 1A and FIG. 1B, and will not be repeated here.
  • this embodiment provides a method for preparing a display panel, which can be used to prepare the display panel provided in FIG. 1A.
  • the preparation method may include: a step of forming a flexible substrate 1, a step of forming a plurality of display units on the flexible substrate 1, a step of forming a support substrate 2 (the support substrate 2 is used to support the flexible substrate 1), and A step of forming a first magnetic unit and a second magnetic unit, and bonding the flexible substrate 1 and the supporting substrate 2 by the action of the magnetic field between the first magnetic unit and the second magnetic unit.
  • the following takes the preparation of the display panel in FIG. 1A as an example for specific description, in which the first magnetic device 41 is disposed on the side of the flexible substrate 1 facing away from the display unit.
  • the method may specifically include the following steps, as shown in FIG. 7:
  • a hard substrate 7 with protrusions at a preset position can be formed by a patterning (film formation, glue coating, etching, etc.) process.
  • the hard base 7 is used to prepare the flexible substrate 1, and the position of the protrusions should correspond to the display area of the flexible substrate 1.
  • the hard substrate 7 can be a glass substrate, a silicon substrate, or the like.
  • the convex cross-section may be an inverted trapezoid.
  • a flexible substrate 1 is formed on a hard base 7.
  • a material film layer of the flexible substrate 1 can be formed on the hard base 7 by a coating process, and a patterned flexible substrate 1 can be formed by a curing process.
  • the flexible substrate 1 includes a plurality of display areas and spacer areas between the display areas.
  • the flexible substrate 1 has a first side and a second side opposite to each other. The first side is close to the hard base 7 and the second side is away from the hard base 7.
  • a display unit is formed on the second side of the flexible substrate 1.
  • the display unit may include one or more display devices 3, such as an OLED display device 3.
  • the display unit may also include a packaging unit 6, thin film transistors and other structures.
  • a packaging unit 6 thin film transistors and other structures.
  • the flexible substrate 1 on which the display unit is formed is peeled from the rigid base 7 and turned over.
  • a groove is formed on the first side of the peeled flexible substrate 1 corresponding to the convex position of the hard base 7, and the position of the groove corresponds to the display unit provided on the first side of the flexible substrate 1. .
  • a first magnetic device 41 is formed in the groove.
  • the material of the first magnetic device 41 may include silica gel doped with magnetic particles. Specifically, in this step, a silica gel solution doped with magnetic particles may be formed in the groove through an inkjet printing process, and the first magnetic device 41 may be formed through a curing process. Of course, when the first magnetic device 41 is another type of magnetic structure, it can also be prepared and formed in other ways.
  • the second magnetic unit may include a magnetic coil or magnetic metal provided on the support substrate 2.
  • the supporting surface of the supporting substrate for supporting the flexible substrate 1 is a curved surface.
  • a stretchable back film can be coated on the support substrate 2 provided with the second magnetic unit, and then the support surface of the support substrate can be directly used to stretch the flexible substrate 1 directly.
  • the flexible substrate 1 is adjusted by the magnetic field between the first magnetic unit and the second magnetic unit, so that the flexible substrate 1 and the supporting substrate 2 are attached to each other.
  • the flexible substrate 1 can also be adjusted by the action of the magnetic field between the first magnetic unit and the second magnetic unit while the flexible substrate 1 is being stretched.
  • a magnetic film material can be prepared in the spacer area of the flexible substrate 1 to form the first magnetic unit.
  • the preparation of the magnetic film can be completed by inkjet printing and curing processes.
  • the formation of the second magnetic unit and the assembly of the flexible substrate 1 and the supporting substrate 2 can be completed with reference to the above steps (steps S5 and S6), which will not be repeated here.
  • the display panel prepared by the manufacturing method provided in this embodiment is provided with a first magnetic unit and a second magnetic unit.
  • the flexible substrate 1 is attached to the supporting substrate 2 to avoid distortion of the display area of the flexible substrate 1, thereby
  • the flexible substrate 1 of each display area is fixed within a certain range, so as to ensure that the display panel has a good display effect.
  • This embodiment provides a display device, including any one of the display panels provided in FIG. 1 or 2.
  • the display device may be an OLED display device, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and any other product or component with a display function.
  • OLED display device such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, and any other product or component with a display function.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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Abstract

一种显示面板、显示面板的制备方法、显示装置，属于显示技术领域。一种显示面板，包括柔性衬底(1)和支撑基板(2)，支撑基板(2)对柔性衬底(1)进行支撑；柔性衬底(2)上设置有多个显示单元；显示面板还包括：第一磁性单元；第二磁性单元；第一磁性单元和第二磁性单元用于通过二者之间的磁场作用使柔性衬底(1)与支撑基板(2)贴合。

Description

显示面板、显示面板的制备方法、显示装置
相关申请的交叉引用
本申请要求于2019年2月11日提交的申请号为201910109896.X的中国专利申请的优先权，在此将其内容以引文方式整体并入本文。
技术领域
本申请属于显示技术领域，具体涉及一种显示面板、显示面板的制备方法、显示装置。
背景技术
OLED(Organic Light-Emitting Diode；有机电致发光二极管)显示面板凭借其低功耗、高色饱和度、广视角、薄厚度、能实现柔性化等优异性能，逐渐成为显示领域的主流，广泛应用于智能手机、平板电脑、电视等终端产品中。其中，柔性OLED显示面板以其可以满足各种特殊结构的优势而成为OLED显示主流。
发明内容
本公开提供一种显示面板、显示面板的制备方法和显示装置。
所述显示面板，包括柔性衬底和支撑基板，所述支撑基板对所述柔性衬底进行支撑；所述柔性衬底上设置有多个显示单元；其中，所述显示面板还包括：第一磁性单元，附着至所述柔性衬底；第二磁性单元，附着至所述支撑基板；所述第一磁性单元和所述第二磁性单元用于通过所述第一磁性元件和所述第二磁性元件之间的磁场作用使所述柔性衬底与所述支撑基板贴合。
在一个实施例中，所述第一磁性单元包括多个第一磁性器件；以及所述第一磁性器件设置于所述柔性衬底背离所述显示单元的一侧，且所述多个第一磁性器件与所述多个显示单元一一对应。
在一个实施例中，所述柔性衬底背离所述显示单元的侧面具有多个第一凹槽，所述多个第一凹槽与所述多个显示单元一一对应；所述多个第一磁性器件中的每一个设置于相应的一个所述第一凹槽中。
在一个实施例中，所述第一磁性单元包括多个第一磁性器件；所述第一磁性器件设置于所述柔性衬底靠近所述显示单元的一侧，且所述多个第一磁性器件与所述多个显示单元一一对应。
在一个实施例中，所述显示面板包括多个显示区和位于所述显示区之间的间隔区；所述显示单元设置于所述显示区；所述间隔区包括连接部和镂空部；所述第一磁性单元包括磁性膜材，所述磁性膜材设置于所述间隔区的所述连接部和/或所述镂空部。
在一个实施例中，所述磁性膜材包括弹性磁性膜材。
在一个实施例中，所述第一磁性单元的材料包括：掺杂有磁性颗粒的硅胶。
在一个实施例中，所述磁性颗粒包括具有磁性的Fe 3O 4、NiFe纳米微球及量子点微球。
在一个实施例中，所述第一磁性器件包括磁性线圈或磁性金属。
在一个实施例中，所述第二磁性单元设置于所述支撑基板的靠近所述柔性衬底的一侧，且所述第二磁性单元与所述第一磁性单元相对设置。
在一个实施例中，所述第二磁性单元包括多个第二磁性器件，第二磁性器件为磁性线圈或者磁性金属。
在一个实施例中，所述支撑基板靠近所述柔性衬底的侧面具有多个第二凹槽，所述多个凹槽与所述多个显示单元一一对应；所述多个第二磁性器件中的每一个设置于相应的一个所述第二凹槽中。
在一个实施例中，所述多个第二磁性器件设置在所述支撑基板上；以及所述显示面板还包括设置在所述支撑基板和所述柔性 衬底之间的可拉伸背膜。
在一个实施例中，所述支撑基板和所述第二磁性单元由磁性金属一体形成；以及所述显示面板还包括设置在所述支撑基板和所述柔性衬底之间的可拉伸背膜。
在一个实施例中，所述第一磁性器件为电磁线圈和/或所述第二磁性器件为电磁线圈；所述显示面板还包括用于对电磁线圈施加电流的电源。
在一个实施例中，所述支撑基板对支撑柔性衬底进行支撑的面为弧面。
本公开还提供了一种制备上述显示面板的制备方法，包括：形成柔性衬底，使得所述柔性衬底上形成有多个显示单元；形成支撑基板；在所述柔性衬底一侧形成附着于所述第一柔性衬底的第一磁性单元；在所述支撑基板一侧形成附着于所述支撑基板的第二磁性单元；以及将所述柔性衬底与所述支撑基板组装，使得所述所述支撑基板对所述柔性衬底进行支撑以及利用所述第一磁性单元和所述第二磁性单元之间的磁场作用使所述柔性衬底与所述支撑基板贴合。
在一个实施例中，所述第一磁性单元包括多个第一磁性器件；所述形成柔性衬底包括：通过构图工艺在所述柔性衬底的第一侧的显示区中形成多个凹槽；在所述柔性衬底的与所述第一侧相对的第二侧形成多个显示单元，使得所述多个显示单元与所述多个凹槽一一对应；在所述多个凹槽中分别形成所述多个第一磁性器件。
在一个实施例中，在所述支撑基板一侧形成附着于所述支撑基板的第二磁性单元包括：在所述支撑基板上与所述多个第一磁性器件相对应的位置上形成多个第二磁性器件；以及在所述支撑基板上形成可拉伸背膜；以及将所述柔性衬底与所述支撑基板组装包括在所述可拉伸背膜上安装所述柔性衬底。
本公开还提供了一种显示装置，包括上述显示面板。
附图说明
图1A为本公开的实施例的显示面板的结构的截面示意图；
图1B为本公开的实施例的显示面板的结构的截面示意图；
图1C为本公开的实施例的显示面板的结构的平面图；
图1D为本公开的实施例的显示面板的结构的截面示意图；
图1E为本公开的实施例的显示面板的结构的截面示意图；
图1F为本公开的实施例的显示面板的结构的截面示意图；
图2A为本公开的实施例的显示面板的结构示意图；
图2B为本公开的实施例的显示面板的结构示意图；
图3为本公开的实施例的显示面板的制备方法中形成硬质基底的示意图；
图4为本公开的实施例的显示面板的制备方法中形成柔性衬底的示意图；
图5为本公开的实施例的显示面板的制备方法中形成OLED器件的示意图；
图6为本公开的实施例的显示面板的制备方法中形成第一磁性器件的示意图；以及
图7示出了本公开的制备显示面板的方法的流程图。
具体实施方式
为使本领域技术人员更好地理解本公开的技术方案，下面结合附图和具体实施方式对本公开作进一步详细描述。
随着柔性工艺的发展，OLED显示面板逐步从弯曲(Bendable)，弯折(Foldable)，过渡到弹性可拉伸(Stretchable)，其适用于球形显示或者立体显示。相关的可拉伸的OLED显示面板中，采用显示岛-连接桥-净空区结构。在OLED显示面板的拉伸过程中，净空区的形状会发生变化，显示岛会受到所连接的连接桥的剪切向应力，往往出现扭曲的情况。在显示岛发生扭曲后，会造成OLED显示面板的显示mura、图形失真、图形扭曲等不良 情况。
本公开实施例提供的显示面板特别适用于可拉伸显示面板。如图1A所示，可拉伸显示面板包括柔性衬底1和支撑基板2。如图1C所示，柔性衬底1包括：多个显示区13(也可称为显示岛)和位于显示区13之间的间隔区。柔性衬底1的间隔区通常包括镂空部11和连接部12，，相邻的显示区之间通过镂空部11隔开，并通过连接部12连接。如图1A和1C所示，显示区13中设置有显示单元，显示单元可包括一个或者多个显示器件3。在本公开实施例中以显示单元只包括一个显示器件3为例进行说明。其中，显示器件3可以是有机电致发光二极管，也可以是无机发光二极管，在本公开实施例中并不对显示器件3的类型进行限制。
如图1A和图1B所示，本实施例提供一种显示面板，包括柔性衬底1和支撑基板2，支撑基板2对柔性衬底1进行支撑；柔性衬底1的显示区中设置有显示单元。显示面板还包括：第一磁性单元和第二磁性单元；第一磁性单元和第二磁性单元用于通过二者之间的磁场作用使柔性衬底1与支撑基板2贴合。
当显示面板进行拉伸时，柔性衬底1的间隔区的镂空部的形状会发生变化，以适应显示面板的拉伸，此时柔性衬底1的显示区易发生扭曲，导致柔性衬底1上显示器件3的发光方向各异，造成显示不良的现象。本实施例中，通过在显示面板中设置第一磁性单元和第二磁性单元，可利用二者之间的磁场作用(磁场力)，使显示面板拉伸时柔性衬底1与支撑基板2由于磁场作用贴合，从而避免柔性衬底1的显示区发生扭曲，同时保证各显示区的柔性衬底1与职称基板的贴合性和稳定性，进而保证显示面板具有良好的显示效果。
需要说明的是，本实施例中的磁场作用为强度较低的(强度足以平衡剪切向应力即可，例如可以为0.01至10H)恒磁场或低频磁场。根据麦克斯韦的电磁波理论，变化的磁场会产生电场，而磁场对电路的干扰主要为磁场变化产生的电磁波造成，本实施 例中的低频磁场或恒磁场不会对外辐射电磁波，低强度磁场也不会对显示面板中的电路产生较大影响，即不会影响显示面板的正常显示。当然，可以在显示面板中设置电磁屏蔽结构(添加整层金属(接地或接恒定电压)，以避免第一磁性单元与第二磁性单元之间的磁场作用对显示器件、驱动电路等造成影响。
本公开的实施例中，第一磁性单元可设置在柔性衬底1一侧，附着于柔性衬底1；第二磁性单元可设置在支撑基板2一侧，附着于支撑基板2，并与第一磁性单元对应以形成磁场。利用第一磁性单元与第二磁性单元之间的吸引力使柔性衬底1与支撑基板2贴合，如图1A、图1B和图1D所示；或者，第一磁性单元可设置在柔性衬底1一侧，附着于柔性衬底1，第二磁性单元可对应设置在柔性衬底1背离支撑基板2的一侧，附着于支撑基板2，利用第一磁性单元与第二磁性单元之间的排斥力使柔性衬底1与支撑基板2贴合，如图1E所示。其中，第一磁性单元与第二磁性单元对应指第一磁性单元在柔性衬底1上的正投影与第二磁性单元在柔性衬底1上的正投影是至少存在部分重叠的，在一些实施例中，第一磁性单元在柔性衬底1上的正投影与第二磁性单元在柔性衬底1上的正投影完全重叠。
本实施例中，以第一磁性单元设置在柔性衬底1一侧，附着于柔性衬底1，第二磁性单元可设置在支撑基板2一侧，附着于支撑基板2，为例进行具体说明，如图1A所示。
第一磁性单元可以包括多个第一磁性器件41；第一磁性器件41可设置于柔性衬底1背离显示单元的一侧，且第一磁性器件41与显示单元一一对应。第二磁性单元可包括设置在支撑基板2上的多个第二磁性器件5，例如磁性线圈或者磁性金属，且第二磁性器件5与第一磁性器件41一一对应。如图1A所示，支撑基板2位于柔性衬底1背离显示单元的一侧，将第一磁性器件41设置于柔性衬底1背离显示单元的一侧，可使第一磁性器件41与第二磁性器件5的之间的磁场作用效果更好，便于对柔性衬底1的整形。
如图1A所示，在支撑基板2和柔性衬底1之间还设置有可 拉伸背膜22，其将第一磁性器件41和第二磁性器件5间隔开，利用二者之间的吸引力可以将附着于第一磁性器件41的柔性衬底1和附着于第二磁性器件4的支撑基板2紧密贴合在一起。可拉伸背膜22可由PDMS等材料制备。
本申请不限于如图1A所示的第二磁性器件5设置在支撑基板2上并且在柔性衬底1和支撑基板2之间设置可拉伸背膜22的实施例。在一个实施例中，如图1B所示，第二磁性器件5设置在支撑基板2的凹槽10中，与第一磁性器件41间隔开。
第一磁性器件41可与显示单元一一对应，具体的，第一磁性器件41可设置于显示单元靠近柔性衬底1的一侧，如图1D所示，或者在柔性衬底1背离显示单元的一侧，如图1A和图1B所示。
可选的，第一磁性器件41设置于柔性衬底1背离显示单元的一侧，即在柔性衬底1的每个显示区的背面都设置第一磁性器件41，从而使第一磁性器件41尽量靠近第二磁性器件5，最大程度地保证各显示区的柔性衬底1与支撑基板2良好贴合，使各显示器件3出光方向规则有序，且由于相关技术的显示面板中常用的显示器件为顶栅型OLED器件，因此柔性衬底1的背面形成磁性单元对显示面板的影响更小。
具体的，可先将柔性衬底1拉伸至所需的形状，之后控制第一磁性单元与第二磁性单元之间产生磁场(具体可采用通电控制磁场的产生)，使柔性衬底1与支撑基板2良好贴合。
在此需要说明的是，当显示单元包括多个显示器件3时，本实施例的显示基板中，可以是一个第一磁性器件41对应一个显示器件3，也可以是一个第一磁性器件41对应一个显示单元中的多个显示器件3。
进一步地，第一磁性器件41嵌设于柔性衬底1的背面。如图1A和图1B所示，柔性衬底1背离显示单元的一面具有凹槽，凹槽与显示单元一一对应。第一磁性器件41设置于凹槽中。通过在柔性衬底1中设置凹槽，将第一磁性器件41设置于凹槽中，可在保证柔性衬底1不会因拉伸而发生扭曲的同时，避免增加显示面 板的厚度，有利于显示面板的轻薄化。
具体的，第一磁性器件41的材料可包括掺杂有磁性颗粒的硅胶。硅胶材料为本领域中使用比较广泛的打印墨水材料，打印效果较好，其与柔性衬底1之间的贴附比较牢固。在第一磁性元件和第二磁性元件之间通过二者之间的磁场作用而相互吸引或排斥时，柔性衬底1和第一磁性单元彼此之间仍然可以牢固地附着。当然，其它打印墨水材料也是可以的，本实施例中不再一一列举。磁性颗粒可为具有磁性的Fe 3O 4、NiFe等纳米微球及量子点微球等。或者，第一磁性器件41也可以为磁性线圈等、磁性金属等结构。其中，磁性金属可为本身具有磁性的金属，也可为通电后可具有磁性的金属。
图1A所示的显示面板还包括电磁屏蔽结构21，其可以为设置在第一磁性器件41上表面上的整层金属，其用于将第一磁性器件41和第二磁性器件5之间的相互作用进行屏蔽，避免对显示单元造成干扰。
图1F示出了根据本发明实施例的显示面板，其中，支撑基板整体上由第二磁性器件5构成。
图1A至图1F的显示面板还包括有设置在显示器件3上的封装单元6，其用于对整个显示器件进行封装保护。
如图2A和2B所示，本实施例提供一种显示面板，其中，第一磁性单元设置在柔性衬底1一侧，附着于柔性衬底1，第二磁性单元可对应设置在支撑基板2一侧，附着于支撑基板2。
本实施例中的显示面板中，第一磁性单元可包括磁性膜材42，该磁性膜材42可设置于柔性衬底1的间隔区。
具体的，如图2所示，柔性衬底1为图案化的结构，其镂空部中不设置显示器件3，第一磁性单元(具体为磁性膜材42)可设置在显示单元(也即柔性衬底1的显示区)之间的镂空部。利用一定厚度的磁性膜材42(例如厚度为0.1至10μm)，可对显示基板中的各显示单元起到位置固定作用。当显示面板进行拉伸时， 可利用第一磁性单元与第二磁性单元之间的磁场力抑制显示单元的不规则偏转，从而使柔性衬底1在拉伸的同时与支撑基板2保持良好贴合，进而保证显示面板具有良好的显示效果。
当然，本实施例中，磁性膜材42也可设置在柔性衬底1的连接部的位置，利用连接部处的磁性膜材42使得柔性衬底1与支撑基板2的良好贴合，抑制显示区的柔性衬底1发生扭曲，使柔性衬底1与支撑基板2整体贴合良好。
可选的，本实施例中，磁性膜材42具有弹性。利用具有弹性的磁性膜材42，可更好地适应显示面板的拉伸，使显示面板拉伸过程中良好适应镂空部的变形，对显示单元的偏转起到有效的限制作用。
具体的，本实施例中的磁性膜材42的材料也可以为掺杂有磁性颗粒的硅胶。其中，磁性颗粒可为具有磁性的Fe 3O 4、NiFe等纳米微球及量子点微球等。
图2A和图2B中第二磁性器件的其他结构类似于图1A和图1B中的结构，在此不再赘述。
如图3至6所示，本实施例提供一种显示面板的制备方法，可用于制备图1A提供的显示面板。该制备方法可包括：形成柔性衬底1的步骤、在柔性衬底1上形成多个显示单元的步骤、形成支撑基板2的步骤(支撑基板2用于对柔性衬底1进行支撑)、以及形成第一磁性单元和第二磁性单元，并利用第一磁性单元和第二磁性单元之间的磁场作用使柔性衬底1与支撑基板2贴合的步骤。
下面以制备图1A中的显示面板为例进行具体说明，其中第一磁性器件41设置在柔性衬底1背离显示单元的一侧，该方法具体可包括以下步骤，如图7所示：
S0、如图3所示，形成具有凸起的硬质基底7。
具体的，可通过构图(成膜、涂胶、刻蚀等步骤)工艺形成在预设位置具有凸起的硬质基底7。该硬质基底7用于柔性衬底1 的制备，凸起的设置位置应对应柔性衬底1的显示区。其中，硬质基底7可为玻璃基底、硅质基底等。凸起的截面可为倒梯形。
S1、如图4所示，在硬质基底7上形成柔性衬底1。
本步骤中，可通过涂覆工艺在硬质基底7上形成柔性衬底1材料膜层，并通过固化工艺形成图案化的柔性衬底1。柔性衬底1包括多个显示区和位于显示区之间的间隔区。并且柔性衬底1具有相对的第一侧和第二侧，第一侧靠近硬质基底7，第二侧背离硬质基底7。
S2、如图5所示，在柔性衬底1的第二侧形成显示单元。
其中，显示单元可包括一个或者多个显示器件3，例如OLED显示器件3。当然，显示单元还可包括封装单元6、薄膜晶体管等结构。显示单元中各结构的形成工艺可参考相关技术，本实施例中不再赘述。
S3、将形成有显示单元的柔性衬底1从硬质基底7上剥离，并进行翻转。
可以理解的是，剥离后的柔性衬底1的第一侧对应硬质基底7的凸起位置形成有凹槽，且凹槽的位置与设置于柔性衬底1的第一侧的显示单元对应。
S4、如图6所示，在凹槽中形成第一磁性器件41。
其中，第一磁性器件41的材料可包括掺杂有磁性颗粒的硅胶。具体的，本步骤中可通过喷墨打印工艺在凹槽中形成掺杂有磁性颗粒的硅胶溶液，并通过固化工艺形成第一磁性器件41。当然，当第一磁性器件41为其它类型的磁性结构时，也可采用其它方式进行制备形成。
S5、在支撑基板2上形成第二磁性单元。
第二磁性单元可包括设置在支撑基板2上的磁性线圈或者磁性金属。
可选的，支撑基板用于支撑柔性衬底1的支撑面为弧面。
S6、对柔性衬底1和支撑基板2进行组装。
本实施例中，可以在设置有第二磁性单元的支撑基板2上涂 覆可拉伸背膜，然后再直接利用支撑基板的支撑面直接对柔性衬底1进行拉伸。在对柔性衬底1进行拉伸后，利用第一磁性单元与第二磁性单元之间的磁场作用对柔性衬底1进行调整，使柔性衬底1与支撑基板2贴合。当然，也可以在对柔性衬底1进行拉伸的同时利用第一磁性单元与第二磁性单元之间的磁场作用对柔性衬底1进行调整。
在此需要说明的是，当制备图2A和图2B中提供的显示面板时，无需提供具有凸起的硬质基底7，只要在平坦的硬质基底7上制备柔性衬底1，并形成显示器件、薄膜晶体管、封装单元等结构后，在柔性衬底1的间隔区制备磁性膜材即可，从而形成第一磁性单元。其中，磁性膜材的制备可通过喷墨打印、固化工艺完成。第二磁性单元的形成及柔性衬底1与支撑基板2的组装可参照上述步骤(步骤S5、S6)完成，在此不再赘述。
本实施例提供的制备方法所制备的显示面板中设置有第一磁性单元和第二磁性单元。利用第一磁性单元与第二磁性单元之间的磁场作用(磁场力)可使显示面板拉伸时，柔性衬底1与支撑基板2贴合，避免柔性衬底1的显示区发生扭曲，从而将各显示区的柔性衬底1固定在一定范围内，从而保证显示面板具有良好的显示效果。
实施例4：
本实施例提供一种显示装置，包括图1或2中提供的任意一种显示面板。
其中，显示装置可以为OLED显示装置，例如手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
可以理解的是，以上实施方式仅仅是为了说明本公开的原理而采用的示例性实施方式，然而本公开并不局限于此。对于本领 域内的普通技术人员而言，在不脱离本公开的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本公开的保护范围。

Claims (20)

  1. 一种显示面板，包括：
    柔性衬底，包括位于显示区的多个显示单元和多个显示区之间的多个间隔区，所述多个间隔区包括多个镂空部和多个连接部，相邻的显示区通过一个镂空部隔开并通过一个连接部连接；
    支撑基板，所述支撑基板对所述柔性衬底进行支撑；
    第一磁性单元，附着至所述柔性衬底；
    第二磁性单元，附着至所述支撑基板；
    所述第一磁性单元和所述第二磁性单元至少部分重叠以形成磁场作用使所述柔性衬底与所述支撑基板贴合。
  2. 根据权利要求1所述的显示面板，其中，所述第一磁性单元包括多个第一磁性器件；
    所述第一磁性器件设置于所述柔性衬底背离所述显示单元的一侧，且所述多个第一磁性器件与所述多个显示单元一一对应。
  3. 根据权利要求2所述的显示面板，其中，所述柔性衬底背离所述显示单元的侧面具有多个第一凹槽，所述多个第一凹槽与所述多个显示单元一一对应；
    所述多个第一磁性器件中的每一个设置于相应的一个所述第一凹槽中。
  4. 根据权利要求1所述的显示面板，其中，所述第一磁性单元包括多个第一磁性器件；
    所述第一磁性器件设置于所述柔性衬底靠近所述显示单元的一侧，且所述多个第一磁性器件与所述多个显示单元一一对应。
  5. 根据权利要求1所述的显示面板，其中，
    所述第一磁性单元包括磁性膜材，所述磁性膜材设置于所述 间隔区的所述连接部和/或所述镂空部。
  6. 根据权利要求5所述的显示面板，其中，所述磁性膜材包括弹性磁性膜材。
  7. 根据权利要求1至6中任一项所述的显示面板，其中，所述第一磁性单元的材料包括：掺杂有磁性颗粒的硅胶。
  8. 根据权利要求7所述的显示面板，其中，所述磁性颗粒包括具有磁性的Fe 3O 4、NiFe纳米微球及量子点微球。
  9. 根据权利要求2至4中任一项所述的显示面板，其中，所述第一磁性器件包括磁性线圈或磁性金属。
  10. 根据权利要求1至9中任一项所述的显示面板，其中，所述第二磁性单元设置于所述支撑基板的靠近所述柔性衬底的一侧，且所述第二磁性单元与所述第一磁性单元相对设置。
  11. 根据权利要求10所述的显示面板，其中，所述第二磁性单元包括多个第二磁性器件，第二磁性器件为磁性线圈或者磁性金属。
  12. 根据权利要求11所述的显示面板，其中，所述支撑基板靠近所述柔性衬底的侧面具有多个第二凹槽，所述多个凹槽与所述多个显示单元一一对应；
    所述多个第二磁性器件中的每一个设置于相应的一个所述第二凹槽中。
  13. 根据权利要求11所述的显示面板，其中，所述多个第二磁性器件设置在所述支撑基板上；以及
    所述显示面板还包括设置在所述支撑基板和所述柔性衬底之间的可拉伸背膜。
  14. 根据权利要求10所述的显示面板，其中，所述支撑基板和所述第二磁性单元由磁性金属一体形成；以及
    所述显示面板还包括设置在所述支撑基板和所述柔性衬底之间的可拉伸背膜。
  15. 根据权利要求11所述的显示面板，其中，所述第一磁性器件为电磁线圈和/或所述第二磁性器件为电磁线圈；
    所述显示面板还包括用于对电磁线圈施加电流的电源。
  16. 根据权利要求1至15中任一项所述的显示面板，其中，所述支撑基板对支撑柔性衬底进行支撑的面为弧面。
  17. 一种制备权利要求1至16中任一项所述的显示面板的制备方法，包括：
    形成柔性衬底，使得所述柔性衬底上形成有多个显示单元；
    形成支撑基板；
    在所述柔性衬底一侧形成附着于所述第一柔性衬底的第一磁性单元；
    在所述支撑基板一侧形成附着于所述支撑基板的第二磁性单元；以及
    将所述柔性衬底与所述支撑基板组装，使得所述支撑基板对所述柔性衬底进行支撑以及利用所述第一磁性单元和所述第二磁性单元之间的磁场作用使所述柔性衬底与所述支撑基板贴合。
  18. 根据权利要求17所述的显示面板的制备方法，其中，所述第一磁性单元包括多个第一磁性器件；
    所述形成柔性衬底包括：
    通过构图工艺在所述柔性衬底的第一侧的显示区中形成多个凹槽；
    在所述柔性衬底的与所述第一侧相对的第二侧形成多个显示单元，使得所述多个显示单元与所述多个凹槽一一对应；
    在所述多个凹槽中分别形成所述多个第一磁性器件。
  19. 根据权利要求18所述的显示面板的制备方法，其中在所述支撑基板一侧形成附着于所述支撑基板的第二磁性单元包括：
    在所述支撑基板上与所述多个第一磁性器件相对应的位置上形成多个第二磁性器件；以及
    在所述支撑基板上形成可拉伸背膜；以及
    将所述柔性衬底与所述支撑基板组装包括在所述可拉伸背膜上安装所述柔性衬底。
  20. 一种显示装置，包括权利要求1至19中任意一项所述的显示面板。
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