WO2021022490A1 - 柔性显示面板及其制作方法、柔性显示装置 - Google Patents

柔性显示面板及其制作方法、柔性显示装置 Download PDF

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Publication number
WO2021022490A1
WO2021022490A1 PCT/CN2019/099504 CN2019099504W WO2021022490A1 WO 2021022490 A1 WO2021022490 A1 WO 2021022490A1 CN 2019099504 W CN2019099504 W CN 2019099504W WO 2021022490 A1 WO2021022490 A1 WO 2021022490A1
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WIPO (PCT)
Prior art keywords
release agent
film
display panel
units
adhesive layer
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PCT/CN2019/099504
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English (en)
French (fr)
Inventor
隋凯
孙中元
薛金祥
王小芬
董超
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京东方科技集团股份有限公司
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Application filed by 京东方科技集团股份有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2019/099504 priority Critical patent/WO2021022490A1/zh
Priority to US16/966,710 priority patent/US11659762B2/en
Priority to CN201980001281.3A priority patent/CN110603644B/zh
Publication of WO2021022490A1 publication Critical patent/WO2021022490A1/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
    • 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
    • H10K59/131—Interconnections, e.g. wiring lines or terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/15—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission
    • H01L27/153—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars
    • H01L27/156—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components having potential barriers, specially adapted for light emission in a repetitive configuration, e.g. LED bars two-dimensional arrays
    • 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
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • 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
    • 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
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • 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
    • H10K59/1201—Manufacture or treatment
    • 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
    • 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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a flexible display panel, a manufacturing method thereof, and a flexible display device.
  • a flexible display panel includes: a stretchable bottom film; an adhesive layer, the glue layer is disposed on one side surface of the stretchable bottom film; a flexible substrate, the flexible substrate includes a plurality of display units and a plurality of A connecting unit, wherein every two adjacent display units are connected by at least one connecting unit; and, a plurality of first release agent films, the plurality of first release agent films are arranged between the plurality of connection units and Between the adhesive layers, the plurality of first release agent films correspond to the plurality of connection units one to one.
  • the orthographic projection of each of the plurality of connecting units on the stretchable base film is within the orthographic projection of the corresponding first release agent film on the stretchable base film;
  • a plurality of display units are bonded to the adhesive layer.
  • each first release agent film of the plurality of first release agent films is formed on the surface of the corresponding connection unit close to the adhesive layer.
  • each first release agent film of the plurality of first release agent films is formed on the surface of the adhesive layer facing away from the stretchable base film.
  • each display unit of the plurality of display units includes at least one connecting portion connected to the connected connecting unit in a one-to-one correspondence;
  • the flexible display panel further includes: at least one second release agent film ,
  • Each second release agent film in the at least one second release agent film is disposed between one of the at least one connection portion and the adhesive layer, and each second release agent film The molding agent film is connected to the adjacent first release agent film.
  • each of the second release agent film and the adjacent first release agent film form an integral structure.
  • the release force of each second release agent film on the glue layer is greater than the release force of the adjacent first release agent film on the glue layer.
  • the plurality of first release agent films include acrylic type release agent films, resin release agent films, silicone atmosphere release agent films, fluorine-containing polyurethane release agent films, fluorine-containing poly At least one of silicone release agent film, fluorosilicone release agent film or propylene butane release agent film.
  • each of the connection units includes a second flexible substrate film and a connection circuit that are sequentially arranged in a direction away from the adhesive layer.
  • the flexible substrate further includes a thin film encapsulation layer disposed on a side of the plurality of connection units and the plurality of display units facing away from the adhesive layer.
  • the orthographic projection of the portion of the thin film encapsulation layer corresponding to each of the connecting units is located within the orthographic projection of the corresponding first release agent film.
  • each connection unit connected to the corresponding display unit is curved, and the two ends have opposite bending directions.
  • a flexible display device including the flexible display panel described above.
  • a method for manufacturing a flexible display panel includes: providing a stretchable bottom film, forming a glue layer on one surface of the stretchable bottom film; manufacturing a flexible substrate, the flexible substrate including a plurality of display units and a plurality of Connection units, wherein every two adjacent display units are connected by at least one connection unit; the surface of each connection unit of the plurality of connection units and the adhesive layer to be bonded of the plurality of display units A plurality of first release agent films are formed on the surface of the same side, or a plurality of first release agent films corresponding to the plurality of connecting units are formed on the surface of the adhesive layer on the side facing away from the stretchable base film.
  • a release agent film; bonding the plurality of display units to the adhesive layer, and the orthographic projection of each connecting unit on the stretchable base film is located on the corresponding first release agent film in the Can be stretched within the orthographic projection on the base film.
  • the method for preparing the flexible display panel further includes: at least one connecting portion of the plurality of display units is close to the plurality of first At least one second release agent film is formed on the surface of the release agent film, and each second release agent film in the at least one second release agent film is connected to the adjacent first release agent film .
  • the method for manufacturing the flexible display panel further includes:
  • the formation of the plurality of first release agent films includes at least one of a printing method or a spraying method.
  • fabricating the flexible substrate includes: providing a first carrier, and sequentially forming a flexible substrate layer and a display circuit layer on one surface of the first carrier; combining the flexible substrate layer and the display circuit Layer patterning, so that the patterned flexible substrate layer includes multiple first flexible substrate films and multiple second flexible substrate films, and the patterned display circuit layer includes multiple driving circuits and multiple connecting circuits; A light emitting device is formed on a side of each of the plurality of driving circuits away from the first carrier board; the first carrier board is removed.
  • Each display unit of the plurality of display units includes a first flexible substrate film, a driving circuit, and a light emitting device, and each connection unit includes a second flexible substrate film and a connection circuit.
  • fabricating the flexible substrate further includes: forming a thin film encapsulation layer on a side of the plurality of display units and the plurality of connection units away from the first carrier.
  • the preparation method of the flexible display panel before forming the plurality of first release agent films, further includes: sequentially bonding on the side of the flexible substrate away from the first carrier Temporary protective film and second carrier board. After the multiple display units are bonded to the adhesive layer, the method for manufacturing the flexible display panel further includes: removing the temporary protective film and the second carrier.
  • FIG. 1 is a schematic structural diagram of a flexible display panel according to some embodiments of the present disclosure
  • FIG. 3 is a partial top view of a flexible substrate of a flexible display panel in FIG. 1;
  • FIG. 4 is a cross-sectional view of a flexible display panel along the dashed line YY' in FIG. 1 according to some embodiments of the present disclosure
  • FIG. 5 is a partial top view of a flexible substrate of another flexible display panel according to some embodiments of the present disclosure.
  • FIG. 6 is a cross-sectional view of another flexible display panel along the dotted line YY' in FIG. 1 according to some embodiments of the present disclosure
  • FIG. 8 is a cross-sectional view of still another flexible display panel along the dotted line XX' in FIG. 1 according to some embodiments of the present disclosure
  • FIG. 10 is a flowchart of a method for manufacturing a flexible display panel according to some embodiments of the present disclosure.
  • FIG. 11 is a flowchart of another method for manufacturing a flexible display panel according to some embodiments of the present disclosure.
  • FIG. 12A to 12J are schematic diagrams of various steps in a method for manufacturing a flexible display panel according to some embodiments of the present disclosure, wherein FIG. 12H' is a schematic diagram of alternative steps parallel to the steps shown in FIG. 12H;
  • FIG. 13 is a flowchart of yet another method for manufacturing a flexible display panel according to some embodiments of the present disclosure.
  • FIG. 14 is a schematic diagram of S310 in the manufacturing method of the flexible display panel in FIG. 13;
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality” means two or more.
  • some embodiments of the present disclosure provide a flexible display panel 100, the flexible display panel 100 includes: a flexible substrate 110, an adhesive layer 120, a stretchable base film 130 and a plurality of first separation Model agent film 140.
  • the flexible substrate 110 includes a plurality of display units 1 and a plurality of connection units 2, wherein every two adjacent display units 1 are connected by at least one connection unit 2.
  • each two adjacent display units 1 of the plurality of display units 1 has a gap
  • each two connected units 2 of the plurality of connection units 2 has a gap. Therefore, the flexible substrate 110 has a plurality of openings S formed due to the multiple above-mentioned intervals, that is, the flexible substrate 110 has a certain hollow rate, so that it is easier to follow the stretching direction (for example, The direction AB) in Figure 3 stretches out.
  • the plurality of connection units 1 undergo torsional deformation, which can increase the size of the corresponding openings S in the stretching direction, that is, effectively disperse the flexible substrate 110.
  • Tensile stress Therefore, the flexible substrate 110 as described above has better tensile properties.
  • the adhesive layer 120 is disposed on one side surface of the stretchable base film 130, and the plurality of display units 1 are bonded to the adhesive layer 120. It can be seen that the flexible substrate 110 is adhered to one side surface of the stretchable base film 130 through the adhesive layer 120.
  • the stretchable base film 130 can fix the display units 1 of the flexible substrate 110 adhered to it in the same plane to ensure that the display units 1 can still be in the same plane when the flexible display panel 100 is in a stretched state. In the same plane, the display phase difference caused by the display units 1 in different planes can be avoided. This can reduce or even avoid the display inconsistency of the display units 1 of the flexible display panel 100, which is beneficial to ensure the flexible display panel. display effect.
  • the plurality of first release agent films are arranged between the plurality of connection units and the adhesive layer, the plurality of first release agent films correspond to the plurality of connection units one to one, and the plurality of The orthographic projection of each of the connecting units 2 on the stretchable base film 130 is within the orthographic projection of the corresponding first release agent film 140 on the stretchable base film 130. That is to say, the surface of each connection unit 2 close to the glue layer 120 and the glue layer 120 can be effectively separated by the corresponding first release agent film 140, so as to ensure that each connection unit 2 is not connected to the glue layer 120. Phase bonding. Therefore, each connection unit 2 will not be constrained due to its adhesion to the adhesive layer 120, which easily increases the degree of freedom of each connection unit 2. This can reduce the stress concentration of each connection unit 2 caused by being bound by the adhesive layer 120, thereby avoiding the damage of each connection unit 2 due to tensile damage due to stress.
  • the flexible display panel 100 when the flexible display panel 100 is in a stretched state, the plurality of display units 1 are still fixed in the same plane under the restraint of the adhesive layer 120, and the plurality of connection units 2 can be twisted and unfolded relatively freely. That is to say, the flexible display panel 100 as described above improves the stretch reliability while ensuring the display effect.
  • the adhesive layer 120 and the stretchable base film 130 do not need to be patterned, which is beneficial to reduce the process steps in the manufacturing process of the flexible display panel 100, and Reduce its production cost.
  • the adhesive layer 120 and the stretchable base film 130 do not need to be patterned, which can prevent the flexible display panel 100 from being defective due to the patterning of the adhesive layer 120 and the stretchable base film 130 during the manufacturing process. It is beneficial to improve the production yield of flexible display panels.
  • the patterning process of the adhesive layer 120 and the stretchable base film 130 is completed by etching.
  • the flexible substrate 110 is bonded to the stretchable base film 130 through the adhesive layer 120, in the process of etching the stretchable base film 130 and the adhesive layer 120, if multiple light-emitting devices have been fabricated in the flexible substrate 110 , The light-emitting devices are easily damaged due to the foregoing etching operation; and if the light-emitting devices have not been fabricated in the flexible substrate 110, after the foregoing etching operation is completed, the light-emitting devices still need to be prepared in the display substrate 110. It is easy to damage the stretchable base film 130 and the adhesive layer 120 due to the high temperature (temperature greater than 400° C.) in the manufacturing process of each light emitting device.
  • the patterning process of the adhesive layer 120 and the stretchable base film 130 is completed by laser cutting, so that the large amount of heat generated by laser cutting can easily damage the stretchable base film 130, the adhesive layer 120 and the flexible substrate 110. .
  • the flexible display panel 100 provided by some embodiments of the present disclosure does not require patterning processing on the adhesive layer 120 and the stretchable base film 130, which can effectively avoid the foregoing situation.
  • the plurality of first release agent films 140 include an acrylic release agent film, a resin release agent film, a silicone atmosphere release agent film, a fluorine-containing polyurethane release agent film, and a fluorine-containing polysilicone film. At least one of oxane release agent film, fluorosilicone release agent film or propane butane release agent film.
  • the material of the stretchable base film 130 is selected from polydimethylsiloxane (PDMS), natural rubber, nitrile rubber, hydrogenated styrene-butadiene block copolymer (Styrene Ethylene Butylene Styrene (SEBS for short), Thermoplastic Polyurethanes (TPU for short), Polyethylene Naphthalate (PEN for short), Polyimide (PI for short), Polyetherimide At least one of amine (Polyetherimide, PEI), Polyethylene Terephthalate (PET), or Polyphenylene Sulfide (PPS).
  • PDMS polydimethylsiloxane
  • SEBS hydrogenated styrene-butadiene block copolymer
  • SEBS hydrogenated styrene Ethylene Butylene Styrene
  • TPU Polyethylene Naphthalate
  • PI Polyimide
  • Polyetherimide At least one of amine
  • PEI Polyetherimide
  • PET Polyethylene Tere
  • Each of the plurality of first release agent films 140 is located between the corresponding connection unit 2 and the adhesive layer 120, and each first release agent film 140 is formed on the corresponding connection unit 2 on the surface close to the adhesive layer 120, or each first release agent film 140 is formed on the surface of the adhesive layer 120 away from the stretchable base film 130. Some embodiments of the present disclosure do not limit this.
  • each first release agent film 140 is formed on the surface of the adhesive layer 120 facing away from the stretchable base film 130.
  • each first release agent film 140 formed on the surface of the adhesive layer 120 and the plurality of connection units 2 may be aligned.
  • each display unit 1 of the plurality of display units includes at least one connecting portion 11 connected to the connected connecting unit 1 in a one-to-one correspondence.
  • the flexible display panel 100 further includes: at least one second release agent film 150, and each second release agent film 150 in the at least one second release agent film is disposed on one of the at least one connecting portion. Between the portion 11 and the adhesive layer 120, and each second release agent film 150 is connected to the adjacent first release agent film 140.
  • the binding force of the adhesive layer 120 on the connection parts 11 provided with the second release agent film 150 is relatively small, which effectively increases the freedom of rotation of the connection parts 11. Therefore, when the flexible display panel 100 is in a stretched state, the degree of freedom of rotation of the connecting portion 11 adjacent to each connecting portion 11 is further increased, thereby further reducing the probability of damage of each connecting unit 2 and increasing The tensile reliability of the flexible display panel 100.
  • each first release agent film 140 and each second release agent film 150 there is no limitation on the similarity of the materials of each first release agent film 140 and each second release agent film 150.
  • each first release agent film 140 and the material of each second release agent film 150 are different.
  • the release force of each second release agent film 150 on the glue layer 120 is greater than the release force of the adjacent first release agent film 140 on the glue layer 120.
  • the release force refers to the force required to separate the release agent film from the adhesive layer 120.
  • the glue layer 120 is easier to separate from the first release agent films 140, that is, the binding force of the glue layer 120 to the connection units 2 is less than that of the glue layer 120.
  • the binding force to each connecting portion 11 provided with the second release agent film 150 is greater than that of the connection portion 11 provided with the second release agent film 150 that is bound by the adhesive layer 120.
  • the binding force of the connecting portion 11 by the adhesive layer 120 is greater than the binding force of the connecting unit 1 connected to it by the adhesive layer 120.
  • the restraining force is gradually reduced, and the deformation that occurs gradually increases, thereby reducing the sudden increase in deformation.
  • the resulting stress concentration further reduces the probability of damage to each connection unit 2 and improves the tensile reliability of the flexible display panel 100.
  • each display unit 1 and each connection unit 2 in the flexible display panel 100 as described above will be exemplarily introduced.
  • each display unit 1 includes a first flexible substrate film 101, a driving circuit 102, and a light emitting device 103 that are sequentially arranged in a direction away from the adhesive layer 120.
  • Each connection unit 2 includes a second flexible substrate film 201 and a connection circuit 202 that are sequentially arranged in a direction away from the adhesive layer 120.
  • each first flexible substrate film 101 in each display unit 1 and the adhesive layer 120 are directly bonded.
  • the side surface of each second flexible substrate film 201 in each connection unit 2 close to the stretchable base film indirectly contacts the adhesive layer 120 through the corresponding first release agent film 140.
  • the relative positional relationship between the first flexible substrate film 101 included in each display unit 1 and the second flexible substrate film 201 included in each connection unit 2 is not limited.
  • the relative positional relationship between the included driving circuit 102 and the connection circuit 202 included in each connection unit 2 is not limited.
  • each first flexible substrate film 101 and each second flexible substrate film 201 are arranged in the same layer.
  • each first flexible substrate film 101 and each second flexible substrate film 201 can be formed through the same process, which simplifies the manufacturing process of the flexible display panel 100.
  • each drive circuit 102 and each connection circuit 202 are arranged on the same layer.
  • each drive circuit 102 and each connection circuit 202 can be formed in the same manufacturing process, simplifying the manufacturing process of the flexible display panel 100 .
  • some embodiments of the present disclosure do not limit the materials of the first flexible substrate film 101 and the second flexible substrate film 201 as described above.
  • each first flexible substrate film 101 and the material of each second flexible substrate film 201 are selected from polyimide, polyethylene phthalate, polyetherimide, and poly(p-phenylene). At least one of ethylene glycol dicarboxylate or polyphenylene sulfide.
  • the type of the light-emitting device 103 described above is not limited and exemplary here.
  • the light-emitting device 103 is an OLED (Organic Light-Emitting Diode, organic light-emitting diode) light-emitting device, and a QLED (Quantum Dot Light).
  • OLED Organic Light-Emitting Diode, organic light-emitting diode
  • QLED Quantum Dot Light
  • Micro LED Micro Light Emitting Diode, micro light-emitting diode
  • the flexible substrate 110 includes other film layers in addition to the plurality of display units 1 and the plurality of connection units 2.
  • the flexible substrate 110 further includes a film disposed on the side of the plurality of display units 1 and the plurality of connection units 2 facing away from the adhesive layer 120 Encapsulation layer 3.
  • the thin film encapsulation layer 3 can block the penetration of water and oxygen into the inside of each display unit 1 and each connection unit 2, especially can block the water and oxygen from corroding the light emitting device 103 inside each display unit 1, and extend the use of the flexible display panel 100 life.
  • the material of the thin film encapsulation layer 3 is at least one of silicon nitride, silicon oxide, aluminum oxide, or silicon oxynitride.
  • the orthographic projection of the portion of the thin film encapsulation layer 3 corresponding to each connecting unit 2 is located within the orthographic projection of the corresponding first release agent film 140. In this way, it can be ensured that the part of the film encapsulation layer 3 corresponding to each connection unit 2 can move together with the corresponding connection unit 2, so as to avoid binding the connection units 2 due to the adhesion of the film encapsulation layer 3 by the adhesive layer 120.
  • the orthographic projection still refers to the orthographic projection on the stretchable base film 130.
  • the encapsulating film layer 3 covers the upper surface and the sides of each display unit 1 and each connection unit 2, which can ensure that each display unit 1 and each connection unit 2 are in a relatively closed environment, and prevent water and oxygen from passing between the layers.
  • the penetration of the gap further prevents the water and oxygen from corroding the light emitting device 103 in each display unit 1 to improve the packaging effect of the thin film packaging layer 3.
  • each display unit 1 and each connection unit 2 further include other film layers.
  • the flexible display panel 100 will be exemplarily described in detail below with reference to FIGS. 8 and 9.
  • each display unit 1 includes a first flexible substrate film 101, a first buffer film 104, a driving circuit 102, a first flat film 105, and a light emitting device 103 which are sequentially arranged in a direction away from the adhesive layer 120.
  • the first flexible substrate film 101 is disposed on a side of the adhesive layer 120 facing away from the stretchable base film 130.
  • the driving circuit 102 includes an active layer 1021, a gate insulating layer 1022, a gate electrode 1023, an interlayer insulating layer 1024, a source electrode 1025 and a drain electrode 1026.
  • the gate insulating layer 1022 is disposed on one side of the active layer 1021; the gate 1023 is disposed on the side of the gate insulating layer 1022 facing away from the active layer 1021, and the gate 1023 is on the positive side of the active layer 1021.
  • the projection is located in the active layer 1021; the interlayer insulating layer 1024 is arranged on the side of the gate 1023 and the gate insulating layer 1022 facing away from the active layer 1021, and covers the gate 1023; the source 1025 and the drain 1026 are arranged On the side of the interlayer insulating layer 1024 facing away from the active layer 1021, two first via holes 1027 are provided in the gate insulating layer 1022 and the interlayer insulating layer 1024. The source electrode 1025 and the drain electrode 1026 pass through different The first via hole 1027 is connected to the active layer 1021.
  • the driving circuit 102 shown in FIG. 9 includes at least one driving transistor.
  • the gate 1025 of the at least one driving transistor is located on the side of the active layer 1021 facing away from the first flexible substrate film 101.
  • This structure is called “ “Top grid” structure.
  • the above example is described by taking the “top gate” structure as an example, but this does not limit the technical solutions provided by the present disclosure.
  • at least one driving transistor included in the driving circuit 102 adopts a “bottom gate” structure or other structures.
  • the “bottom gate” structure is that the gate 1025 is located on the side of the active layer 1021 facing the first flexible substrate film 101.
  • the light-emitting device 103 includes a first electrode 1031, a light-emitting layer (Emitting Layer, EML) 1033, and a second electrode 1034 that are sequentially stacked.
  • the first electrode 1031 is disposed on a side of the first flat film 105 facing away from the adhesive layer 120, and the first electrode 1031 is connected to the driving circuit 103 through a second via 1051 disposed in the first flat film 105.
  • the light emitting device 103 further includes: a hole injection layer and a hole transport layer sequentially stacked between the first electrode 1031 and the light emitting layer 1033, and sequentially stacked between the light emitting layer 1033 and the second electrode 1034 The electron transport layer and electron injection layer.
  • the first electrode 1031 of the light emitting device 103 in each display unit 1 is an anode, and the anode is connected to the source electrode 1025 or the drain electrode 1026 in the driving circuit 103.
  • Each display unit 1 further includes a pixel defining film 1032 disposed on a side of the first flat film 105 facing away from the adhesive layer 120, and each pixel defining film 1032 has an opening.
  • the light emitting layer 1033 of the light emitting device 103 in each display unit 1 is disposed in the opening in the corresponding pixel definition film 1032.
  • the second electrode 1034 of the light emitting device 103 in each display unit 1 is disposed on the side of the pixel defining film 1032 and the light emitting layer 1033 facing away from the adhesive layer 120.
  • Each connection unit 2 includes a second flexible substrate 201, a second buffer film 204, a connection circuit 202, and a second flat film 205 that are sequentially arranged in a direction away from the adhesive layer 120, wherein the second flexible substrate film 201 is arranged in The adhesive layer 120 has a side facing away from the stretchable base film 130.
  • connection circuit 202 is shown here in the form of a film, which represents the part of the connection circuit 202. Connect the line, but this is not a restriction on the connection circuit 202.
  • the connection circuit 202 further includes at least one switch transistor.
  • each connection unit 2 is set to be non-linear, for example, to have at least one bending area, so as to improve the stretchability of each connection unit 2. In this way, when the flexible display panel 100 is stretched, each connecting unit 2 can be stretched to a certain extent in at least one of its bending areas, so that the distance between the two connected display units 1 in the stretching direction is The distance increases, thereby facilitating the stretching of the flexible display panel 100.
  • each connecting unit 2 connected to the corresponding display unit 1 are arranged in a curved configuration, and the two ends have opposite bending directions.
  • the end of each connection unit 2 connected to the corresponding display unit 1 has a bending area as described above.
  • the bending directions of the two ends are opposite, so that the part of each connecting unit 2 located between the two ends receives the opposite direction of the stress near the two ends, which is more conducive to the twisting of each connecting unit 2 and further increases
  • the distance along the stretching direction between the two connected display units 1 makes the flexible display panel 100 easier to stretch and unfold along the stretching direction.
  • the flexible display device 1000 includes any of the above-mentioned flexible display panels 100, and the flexible display device also includes a flexible display panel for driving the flexible display panel.
  • the driving device specifically includes a driving circuit (not shown in the figure).
  • the flexible display device 1000 has the same structure and beneficial effects as the flexible display panel 100 provided in the foregoing embodiments. Since the foregoing embodiment has described the beneficial effects of the flexible display panel 100 in detail, it will not be repeated here.
  • Some embodiments of the present disclosure also provide a method for preparing a flexible display panel.
  • the method for preparing a flexible display panel includes S100 to S400:
  • the flexible substrate includes a plurality of display units and a plurality of connection units, wherein every two adjacent display units are connected by at least one connection unit.
  • the method for preparing the flexible display panel Since the flexible display panel prepared by the method for preparing the flexible display panel has the advantages of ensuring the display effect, improving the stretch reliability, and improving the yield rate, the method for preparing the flexible display panel also has these advantages Advantage.
  • the adhesive layer (S100) is formed on the stretchable base film and the flexible substrate (S200) is formed, and the adhesive is formed on the stretchable base film.
  • an adhesive layer is formed on the stretchable base film; for example, the adhesive layer is formed on the stretchable base film and the flexible substrate is made at the same time; for another example, the first release film is formed.
  • the formulation film and the formation of the adhesive layer on the stretchable base film are performed at the same time, and the list is not exhaustive here.
  • the manner in which the adhesive layer is formed on one surface of the stretchable base film is not limited here.
  • the preparation components for preparing the adhesive layer are coated on the stretchable base film, for example, the components include a copolymer monomer, a crosslinking agent and an initiator, and then the coated preparation components are cured Treat it to cure on the stretchable base film to form a glue layer.
  • the finished glue is obtained, and the finished glue is processed by cutting, alignment, etc., and then pasted on the stretchable base film to form the said glue on one side of the stretchable base film. Glue layer.
  • the finished glue layer here refers to a separate glue layer that has been manufactured.
  • the finished glue layer includes the glue layer body and the upper release film that is respectively adhered to the upper and lower surfaces of the glue layer body.
  • the lower release film where the upper release film and the lower release film are easier to peel from the surface of the adhesive layer body without destroying the surface viscosity, and mainly play a role in protecting the surface viscosity.
  • the method for forming the plurality of first release agent films includes at least one of a printing method or a spraying method.
  • the liquid external release agent used in the printing method is, for example, acrylic release agent, resin release agent, silicone release agent, atmosphere release agent, fluorine-containing polyurethane release agent, fluorine-containing poly Liquid external release agents such as silicone release agent and fluorosilicone release agent.
  • the spraying method used is a spray type release agent, for example, a spray type release agent such as a propane butane release agent.
  • forming the plurality of first release agent films in S300 includes:
  • the function of the leveling process in S302 is to flatten the coating layers of multiple release agents and volatilize the solvent in them within a certain period of time, thereby reducing the probability of defects such as pinholes and ensuring the formation
  • the plurality of first release agent films are flat.
  • the manufacturing of the flexible substrate in the foregoing S200 includes:
  • a first carrier is provided, and a flexible substrate layer and a display circuit layer are sequentially formed on one surface of the first carrier.
  • Each display unit of the flexible substrate includes a first flexible substrate film, a driving circuit and a light emitting device, and each connection unit of the flexible substrate includes a second flexible substrate film and a connection circuit.
  • the patterning process used includes a photolithography process and an etching process.
  • the photolithography process refers to a process including film formation (such as chemical vapor deposition, Chemical Vapor Deposition, CVD for short), exposure, development and other processes, and a process that uses photoresist, mask, exposure machine, etc. to form patterns.
  • the manufacturing of the flexible substrate in S200 further includes the following steps:
  • S231 is between S230 and S240 as described above, that is, after the light emitting device is formed on the side of each driving circuit away from the first carrier, and then the plurality of display units A thin film encapsulation layer is formed with the side of the plurality of connecting units away from the first carrier, and then the first carrier is removed.
  • the manufacturing method of the flexible display panel as described above further includes:
  • the method for manufacturing the flexible display panel further includes:
  • the temporary protective film and the second carrier can protect the patterned flexible substrate and prevent it from being damaged in the subsequent process of forming the first release film.
  • the film layer of the flexible substrate that is bonded to the temporary protective film and the second carrier is an encapsulation film layer
  • the temporary protective film and the second carrier Can protect the packaging film layer.
  • step S232 is between step S231 and step S240, that is, first forming a thin film on the side of the plurality of display units and the plurality of connection units away from the first carrier.
  • the encapsulation layer is then sequentially bonded to the temporary protective film and the second carrier on the side of the flexible substrate away from the first carrier, and then the first carrier is removed. This can ensure that the flexible substrate is in a state of being protected by the carrier before being bonded to the stretchable base film.
  • the manufacturing of the flexible substrate 110 (S200) is performed, and the manufacturing process is shown in FIGS. 12B to 12E:
  • the patterned flexible substrate layer 010 includes a plurality of first The flexible substrate film 101 and the plurality of second flexible substrate films 201, and the patterned display circuit layer 020 includes a plurality of driving circuits 102 and a plurality of connection circuits 202.
  • each display unit 1 includes a first flexible substrate film 101, a driving circuit 102 and a light emitting device 103, each connected
  • the unit 2 includes a second flexible substrate film 201 and a connection circuit 202.
  • S231 is performed, and a thin film encapsulation layer 3 is formed on the side of the plurality of display units 1 and the plurality of connection units 2 away from the first carrier board 00.
  • the flexible substrate 110 is formed.
  • sequence of forming the adhesive layer 120 on one surface of the stretchable base film 130 (S100) and performing the manufacturing of the flexible substrate 110 (S200) is not limited.
  • the temporary protective film 04 and the second carrier board 05 can protect the surface of the flexible substrate 110 that faces away from the first carrier board 00.
  • the temporary protection The film 01 and the second carrier board 05 can protect the thin film encapsulation layer 3 from damage in the subsequent manufacturing process.
  • the present disclosure includes various implementation methods for the production of the plurality of first release films 140.
  • Step S300A is performed: forming the plurality of first release agent films 140 on the surface of each connection unit 2 on the same side as the surface of the adhesive layer to be bonded of the plurality of display units.
  • the first release film 140 is formed on the surface of each connection unit 2 and the adhesive layer to be bonded of the plurality of display units 1, as shown in FIG. 12H, the second carrier board 05 is facing Bottom, make the corresponding surface of each display unit 1 face upward, so that the first release agent film 140 is formed on each connection unit 2.
  • S300B is performed: forming the plurality of first release agent films 140 corresponding to the plurality of connecting units 2 one-to-one on the surface of the adhesive layer 120 facing away from the stretchable base film 130.
  • S400 is performed: the plurality of display units 1 of the flexible substrate 110 are bonded to the adhesive layer 120.
  • the orthographic projection of each connecting unit 2 in the flexible substrate 110 on the stretchable base film 130 is within the orthographic projection of the corresponding first release agent film 140 on the stretchable base film 130.
  • each first release film 140 is formed on the surface of the corresponding connecting unit 1 close to the adhesive layer 120, that is, on the surface of each connecting unit 2 and the plurality of display units.
  • the plurality of first release agent films 140 are formed on the surface on the same side as the surface of the adhesive layer 120 to be bonded, referring to FIGS. 13 and 14, the plurality of display units 1 of the flexible substrate 110 and Before the adhesive layer 120 is bonded (S400), the manufacturing method of the flexible display panel as described above further includes:
  • At least one second release agent film 150 is formed on the surface of the at least one connecting portion 11 of the plurality of display units 1 close to the plurality of first release agent films 140, and at least one second release agent film Each second release agent film 150 in the agent film 150 is connected to the adjacent first release agent film 140.
  • each first release agent film 140 is formed on the surface of the adhesive layer 120 facing away from the stretchable base film 130, that is, on the surface of the adhesive layer 120 away from the stretchable base film 130.
  • the plurality of display units 1 of the flexible substrate 110 Before bonding with the adhesive layer 120 (S400), the manufacturing method of the flexible display panel as described above further includes:
  • At least one second release agent film 150 corresponding to at least one connecting portion 11 of the plurality of display units 1 is formed on the surface of the adhesive layer 120 facing away from the stretchable base film 130, and Each second release agent film 150 in the at least one second release agent film 150 is connected to the adjacent first release agent film 140.
  • each second release agent film 150 is connected to the adjacent first release agent film 140, in some embodiments of the present disclosure, each second release agent film can be formed in the same process through an integral molding process. A second release agent film 150 and a first release agent film 140 disposed adjacently.
  • each first release agent film 140 is formed in one process, and each second release agent film 150 is formed in another process.
  • the material used to prepare each first release agent film 140 is different from the material used to prepare each second release agent film 150.
  • the material of each first release agent film 140 is a release agent material with a greater release force after film formation
  • the material of each second release agent film 150 is a release agent with less release force after film formation. material.

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Abstract

一种柔性显示面板(100)，包括：可拉伸底膜(130)；胶层(120)，胶层(120)设置于可拉伸底膜(130)的一侧表面上；柔性基板(110)，柔性基板(110)包括多个显示单元(1)和多个连接单元(2)，其中，每相邻的两个显示单元(1)通过至少一个连接单元(2)连接；以及，多个第一离型剂膜(140)，多个第一离型剂膜(140)设置于多个连接单元(2)与胶层(120)之间，多个第一离型剂膜(140)与多个连接单元(2)一一对应。其中，多个连接单元(2)中的每个连接单元(2)在可拉伸底膜(130)上的正投影位于对应的第一离型剂膜(140)在可拉伸底膜(130)上的正投影之内；其中，多个显示单元(1)与胶层(120)黏接。

Description

柔性显示面板及其制作方法、柔性显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种柔性显示面板及其制作方法、柔性显示装置。
背景技术
随着柔性显示技术的发展，一些柔性显示面板因具有较好的拉伸性能，被称作“可拉伸柔性显示面板”。
发明内容
一方面，提供一种柔性显示面板。所述柔性显示面板包括：可拉伸底膜；胶层，所述胶层设置于所述可拉伸底膜的一侧表面上；柔性基板，所述柔性基板包括多个显示单元和多个连接单元，其中，每相邻的两个显示单元通过至少一个连接单元连接；以及，多个第一离型剂膜，所述多个第一离型剂膜设置于所述多个连接单元与所述胶层之间，所述多个第一离型剂膜与所述多个连接单元一一对应。其中，所述多个连接单元中的每个连接单元在所述可拉伸底膜上的正投影位于对应的第一离型剂膜在所述可拉伸底膜上的正投影之内；其中，多个显示单元与所述胶层黏接。
在一些实施例中，所述多个第一离型剂膜中的每个第一离型剂膜形成在对应的连接单元的靠近所述胶层的表面上。
在一些实施例中，所述多个第一离型剂膜中的每个第一离型剂膜形成在所述胶层的背离所述可拉伸底膜的表面上。
在一些实施例中，所述多个显示单元中的每个显示单元包括与相连的连接单元一一对应连接的至少一个连接部；所述柔性显示面板还包括：至少一个第二离型剂膜，所述至少一个第二离型剂膜中的每个第二离型剂膜设置于所述至少一个连接部中的一个所述连接部与所述胶层之间，且每个第二离型剂膜与相邻设置的第一离型剂膜相连。
在一些实施例中，所述每个第二离型剂膜与相邻的第一离型剂膜为一体结构。
在一些实施例中，所述每个第二离型剂膜对所述胶层的离型力大于与其相邻的第一离型剂膜对所述胶层的离型力。
在一些实施例中，所述多个第一离型剂膜包括丙烯酸型离型剂膜、树脂离型剂膜、有机硅氛类离型剂膜、含氟聚氨酯离型剂膜、含氟聚硅氧烷离型剂膜、氟硅离型剂膜或丙丁烷离型剂膜中的至少一种。
在一些实施例中，所述多个显示单元中的每个显示单元包括沿远离所述胶层的方向依次设置的第一柔性衬底膜、驱动电路和发光器件。
在一些实施例中，所述每个连接单元包括沿远离所述胶层的方向依次设置的第二柔性衬底膜和连接电路。
在一些实施例中，所述柔性基板还包括设置于所述多个连接单元和所述多个显示单元的背向所述胶层的一侧的薄膜封装层。
在一些实施例中，所述薄膜封装层的与所述每个连接单元对应的部分的正投影位于相应的第一离型剂膜的正投影之内。
在一些实施例中，所述每个连接单元的与对应的显示单元连接的两端为弯曲设置，且所述两端的弯曲方向相反。
另一方面，提供一种柔性显示装置，包括如上所述的柔性显示面板。
再一方面，提供一种柔性显示面板的制备方法。所述柔性显示面板的制备方法，包括：提供可拉伸底膜，在所述可拉伸底膜的一侧表面上形成胶层；制作柔性基板，所述柔性基板包括多个显示单元和多个连接单元，其中，每相邻的两个显示单元通过至少一个连接单元连接；在所述多个连接单元中的每个连接单元的与所述多个显示单元的待黏接胶层的表面同侧的表面上形成多个第一离型剂膜，或，在所述胶层的背离所述可拉伸底膜的一侧表面上形成与多个连接单元一一对应的多个第一离型剂膜；将所述多个显示单元与所述胶层黏接，所述每个连接单元在所述可拉伸底膜上的正投影位于对应的第一离型剂膜在所述可拉伸底膜上的正投影之内。
在一些实施例中，在所述每个连接单元的与所述多个显示单元的待黏接所述胶层的表面同侧的表面上形成所述多个第一离型剂膜的情况下，在将所述柔性基板的多个显示单元与所述胶层黏接之前，所述柔性显示面板的制备方法还包括：在所述多个显示单元的至少一个连接部的靠近多个第一离型剂膜的表面上形成至少一个第二离型剂膜，且所述至少一个第二离型剂膜中的每个第二离型剂膜与相邻设置的第一离型剂膜连接。
在一些实施例中，在所述胶层的背离所述可拉伸底膜的一侧表面上形成与多个连接单元一一对应的所述多个第一离型剂膜的情况下，在将所述多个显示单元与所述胶层黏接之前，所述柔性显示面板的制备方法还包括：
在所述胶层的背离所述可拉伸底膜的一侧表面上形成与所述多个显示单元的至少一个连接部一一对应的至少一个第二离型剂膜，且所述至少一个第二离型剂膜中的每个第二离型剂膜与相邻设置的第一离型剂膜连接。
在一些实施例中，所述多个第一离型剂膜的形成方式，包括打印方式或喷涂方式中的至少一种方式。
在一些实施例中，制作柔性基板包括：提供第一载板，在所述第一载板的一侧表面上依次形成柔性衬底层和显示电路层；将所述柔性衬底层和所述显示电路层图案化，使图案化的柔性衬底层包括多个第一柔性衬底膜和多个第二柔性衬底膜，使图案化的显示电路层包括多个驱动电路和多个连接电路；在所述多个驱动电路中的每个驱动电路的背离所述第一载板的一侧形成一发光器件；去除所述第一载板。所述多个显示单元中的每个显示单元包括一个第一柔性衬底膜、一个驱动电路和一个发光器件，所述每个连接单元包括一个第二柔性衬底膜和一个连接电路。
在一些实施例中，制作柔性基板还包括：在多个显示单元和多个连接单元的背离所述第一载板的一侧形成薄膜封装层。
在一些实施例中，在形成所述多个第一离型剂膜之前，所述柔性显示面板的制备方法还包括：在所述柔性基板的背离所述第一载板的一侧依次黏接暂时性保护膜和第二载板。在将所述多个显示单元与所述胶层黏接之后，所述柔性显示面板的制备方法还包括：去除所述暂时性保护膜和所述第二载板。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，还可以根据这些附图获得其他的附图。
图1为根据本公开的一些实施例的一种柔性显示面板的结构示意图；
图2为根据本公开的一些实施例的一种柔性显示面板的局部俯视图；
图3为图1中的一种柔性显示面板的柔性基板的局部俯视图；
图4为根据本公开的一些实施例的一种柔性显示面板沿图1中虚线YY’的剖面图；
图5为根据本公开的一些实施例的另一种柔性显示面板的柔性基板的局部俯视图；
图6为根据本公开的一些实施例的另一种柔性显示面板沿图1中虚线YY’ 的剖面图；
图7为根据本公开的一些实施例的又一种柔性显示面板沿图1中虚线XX’的剖面图；
图8为根据本公开的一些实施例的再一种柔性显示面板沿图1中虚线XX’的剖面图；
图9为图8中的一种柔性显示面板的驱动电路的结构示意图；
图10为根据本公开的一些实施例的一种柔性显示面板的制备方法的流程图；
图11为根据本公开的一些实施例的另一种柔性显示面板的制备方法的流程图；
图12A～图12J为根据本公开的一些实施例的一种柔性显示面板的制备方法中的各步骤示意图，其中，图12H’为与图12H所示出的步骤并列的可替代步骤的示意图；
图13为根据本公开的一些实施例的又一种柔性显示面板的制备方法的流程图；
图14为图13中的柔性显示面板的制备方法中的S310的示意图；
图15为根据本公开的一些实施例的再一种柔性显示面板的制备方法的流程图；
图16为图15中的柔性显示面板的制备方法中的S320的示意图；
图17为根据本公开的一些实施例的一种柔性显示装置的结构示意图。
具体实施方式
下面将结合附图，对本公开的一些实施例进行描述。显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的一些实施例，本领域普通技术人员所获得的所有其他实施例，都属于本公开保护的范围。
术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开实施例的描述中，除非另有说明，“多个”的含义是两个或两个以上。
请参阅图1～图4，本公开的一些实施例提供了一种柔性显示面板100，该柔性显示面板100包括：柔性基板110、胶层120、可拉伸底膜130和多个第一离型剂膜140。
该柔性基板110包括多个显示单元1和多个连接单元2，其中，每相邻的两个显示单元1通过至少一个连接单元2连接。
此处，所述多个显示单元1中每相邻的两个显示单元1之间具有间隔，所述多个连接单元2中每相连的两个连接单元2具有间隔。由此，柔性基板110中具有因多个上述间隔而形成的多个开口S，也即柔性基板110具有一定的镂空率，以使其在被拉伸的情况下较易沿拉伸方向(例如图3中方向AB)伸展开。并且，在柔性基板110被拉伸的情况下，所述多个连接单元1产生扭转变形，能够使其对应的各开口S的沿拉伸方向的尺寸增加，也即有效分散了柔性基板110中的拉伸应力。因此，如上所述的柔性基板110具有较好的拉伸性能。
胶层120设置于可拉伸底膜130的一侧表面上，所述多个显示单元1与胶层120黏接。由此可知，柔性基板110通过胶层120黏接于可拉伸底膜130的一侧表面上。可拉伸底膜130能够将黏接于其上的柔性基板110的各显示单元1固定在同一个平面内，以保证各显示单元1在柔性显示面板100处于拉伸状态下仍能够处于所述同一平面内，从而避免各显示单元1因处于不同的平面之内而出现显示相位差，这样能够降低甚至避免柔性显示面板100的各显示单元1出现显示不一致的情况，有利于确保柔性显示面板的显示效果。
所述多个第一离型剂膜设置于所述多个连接单元与所述胶层之间，所述多个第一离型剂膜与所述多个连接单元一一对应，所述多个连接单元中的每个连接单元2在可拉伸底膜130上的正投影位于对应的第一离型剂膜140在可拉伸底膜130上的正投影之内。也就是说，每个连接单元2的靠近胶层120的表面与胶层120之间可以被相应的第一离型剂膜140有效隔离，从而确保每个连接单元2并不会与胶层120相黏接。因此，每个连接单元2不会因其与胶层120黏接而被束缚，容易增加了每个连接单元2的自由度。这样能够降低每个连接单元2因被胶层120束缚而导致的应力集中，进而避免每个连接单元2因应力作用而出现拉伸破损的情况破损。
这样一来，柔性显示面板100处于拉伸状态下，所述多个显示单元1在胶层120的束缚下仍被固定于同一平面内，而所述多个连接单元2能够较自由地扭转展开，也就是说，如上所述的柔性显示面板100在保证了显示效果的同时，提高了拉伸可靠性。
此外，在本公开的一些实施例所提供的柔性显示面板100中，胶层120和可拉伸底膜130无需进行图案化处理，有利于减少柔性显示面板100在制 作过程中的工艺步骤，并降低其制作成本。
当然，胶层120和可拉伸底膜130无需进行图案化处理，也就能够避免柔性显示面板100在制作过程中因胶层120和可拉伸底膜130的图案化处理而产生不良，有利于提高柔性显示面板的生产良率。
例如，胶层120和可拉伸底膜130的图案化处理通过刻蚀方式完成。这样在将柔性基板110通过胶层120与可拉伸底膜130黏接后，对可拉伸底膜130和胶层120进行刻蚀的过程中，若柔性基板110中已经制作好多个发光器件，则各发光器件容易因前述刻蚀操作而被损坏；而若柔性基板110中尚未制作好各发光器件，则在前述刻蚀操作完成后，仍需在显示基板110中制备各发光器件，如此容易因各发光器件制程中的高温(温度大于400℃)对可拉伸底膜130和胶层120造成损坏。
又例如，胶层120和可拉伸底膜130的图案化处理通过激光切割的方式完成，这样因激光切割产生的大量热能容易对可拉伸底膜130、胶层120以及柔性基板110造成损坏。
本公开一些实施例提供的柔性显示面板100无需对胶层120和可拉伸底膜130进行图案化处理，能够有效避免前述情况发生。
此处，本公开一些实施例对于第一离型剂膜140的种类不做限定。示例性的，所述多个第一离型剂膜140包括丙烯酸型离型剂膜、树脂离型剂膜、有机硅氛类离型剂膜、含氟聚氨酯离型剂膜、含氟聚硅氧烷离型剂膜、氟硅离型剂膜或丙丁烷离型剂膜中的至少一种。
本公开一些实施例对于可拉伸底膜130的材料不做限定。示例性的，可拉伸底膜130的材料选自聚二甲基硅氧烷(Polydimethylsiloxane，简称PDMS)、天然橡胶、丁腈橡胶、氢化苯乙烯-丁二烯嵌段共聚物(Styrene Ethylene Butylene Styrene，简称SEBS)、热塑性聚氨酯弹性体橡胶(Thermoplastic Polyurethanes，简称TPU)、聚萘二甲酸乙二醇酯(Polyethylene Naphthalate，简称PEN)、聚酰亚胺(Polyimide，简称PI)、聚醚酰亚胺(Polyetherimide，简称PEI)、聚对苯二甲酸乙二醇酯(Polyethylene Terephthalate，简称PET)或聚苯硫醚(Polyphenylene Sulfide，简称PPS)等材料中的至少一种。上述各材料具有较好的伸缩性能，从而能够确保可拉伸底膜130具有较好的伸缩性能。
所述多个第一离型剂膜140中的每个第一离型剂膜140位于对应的连接单元2与胶层120之间，每个第一离型剂膜140形成在对应的连接单元2的 靠近胶层120的表面上，或每个第一离型剂膜140形成在胶层120的背离可拉伸底膜130的表面上，均可。本公开的一些实施例对此不作限定。
在一些实施例中，参见图4，每个第一离型剂膜140形成在对应的连接单元2的靠近胶层120的表面上。这样，由于每个第一离型剂膜140形成在对应的连接单元2的靠近胶层120的表面上，因此该第一离型剂膜140能够跟随对应的连接单元2一起移动。如此，在柔性显示面板100处于拉伸状态下，即使每个连接单元2与胶层120发生了相对移动，每个连接单元2与胶层120之间仍存在第一离型剂膜140，而避免出现其与胶层120相黏接的情况，从而能够保证胶层120对各连接单元2的束缚力较小，进一步降低了各连接单元2的破损的几率，提高了柔性显示面板100的拉伸可靠性。
在另一些实施例中，每个第一离型剂膜140形成在胶层120的背离可拉伸底膜130的表面上。在该种情况下，示例性的，为保证每个连接单元2在可拉伸底膜130上的正投影位于对应的第一离型剂膜140在可拉伸底膜130上的正投影之内，可以将形成在胶层120表面上的各第一离型剂膜140与所述多个连接单元2进行对位处理。
在本公开的一些实施例中，参见图5和图6，所述多个显示单元中的每个显示单元1包括与相连的连接单元1一一对应连接的至少一个连接部11。柔性显示面板100还包括：至少一个第二离型剂膜150，所述至少一个第二离型剂膜中的每个第二离型剂膜150设置于所述至少一个连接部中的一个连接部11与胶层120之间，且每个第二离型剂膜150与相邻设置的第一离型剂膜140相连。
这样，胶层120对设置有第二离型剂膜150的各连接部11的束缚力较小，有效地增加了所述各连接部11转动的自由度。因此，在柔性显示面板100处于拉伸状态的情况下，与各连接部11相邻的连接部11的转动的自由度进一步增大，从而进一步降低了各连接单元2的破损的几率，提高了柔性显示面板100的拉伸可靠性。
需要说明的是，对于各第一离型剂膜140和各第二离型剂膜150的材料的相同性不做限定。
在一些实施例中，各第一离型剂膜140的材料和各第二离型剂膜150的材料相同。示例性的，参见图6，每个第二离型剂膜150与相邻的第一离型剂膜140为一体结构。此处，每个第二离型剂膜150与相邻的第一离型剂膜140经由相同的材料制备，并在同一道工序步骤中制备成型，因此能够简化柔性 显示面板100的制备工艺。
在一些实施例中，各第一离型剂膜140的材料和各第二离型剂膜150的材料不相同。示例性的，参见图6，每个第二离型剂膜150对胶层120的离型力大于与其相邻的第一离型剂膜140对胶层120的离型力。
此处，需要说明的是，离型力指的是将离型剂膜同胶层120分离所需要的力。由此可知，相比于各第二离型剂膜150，胶层120更易与各第一离型剂膜140分离，也就是说，胶层120对各连接单元2的束缚力小于胶层120对设置有第二离型剂膜150的各连接部11的束缚力。因此，对于设置有第二离型剂膜150的各连接单元2来说，其所受到胶层120的束缚力大于其设置有第二离型剂膜150的连接部11受到胶层120的束缚力，而该连接部11受到胶层120的束缚力又大于与之相连的连接单元1受到胶层120的束缚力。也即，柔性显示面板100在上述各显示单元2到相应的连接单元1所对应的各区域内，所受束缚力逐渐递减，所发生的变形逐渐增大，从而能够降低因变形量突增而导致的应力集中程度，进一步降低了各连接单元2的破损的几率，提高了柔性显示面板100的拉伸可靠性。
下面将对如上所述的柔性显示面板100中的每个显示单元1和每个连接单元2进行示例性的介绍。
在一些实施例中，参见图7，每个显示单元1包括沿远离胶层120的方向依次设置的第一柔性衬底膜101、驱动电路102和发光器件103。每个连接单元2包括沿远离胶层120的方向依次设置的第二柔性衬底膜201和连接电路202。
示例的，每个显示单元1中的各第一柔性衬底膜101与胶层120直接黏接。每个连接单元2中的各第二柔性衬底膜201的靠近可拉伸底膜的一侧表面通过对应的第一离型剂膜140与胶层120间接接触。
此处，对于每个显示单元1所包括的第一柔性衬底膜101和每个连接单元2所包括的第二柔性衬底膜201的相对位置关系不做限定，对于每个显示单元1所包括的驱动电路102和每个连接单元2所包括的连接电路202的相对位置关系不做限定。
示例性的，各第一柔性衬底膜101和各第二柔性衬底膜201同层设置。此种情况下，各第一柔性衬底膜101和各第二柔性衬底膜201能够通过同一道工序形成，简化柔性显示面板100的制备工序。
作为另一种示例，各驱动电路102和各连接电路202同层设置，此种情 况下，各驱动电路102和各连接电路202能够通过同一道制作工序中形成，简化柔性显示面板100的制备工序。
此外，本公开一些实施例对如上所述的各第一柔性衬底膜101和各第二柔性衬底膜201的材料也不做限定。
示例性的，各第一柔性衬底膜101的材料和各第二柔性衬底膜201的材料选自聚酰亚胺、聚苯二甲酸乙二醇酯、聚醚酰亚胺、聚对苯二甲酸乙二醇酯或聚苯硫醚等中的至少一种。
还需要说明的是，此处对于如上所述的发光器件103的种类不做限定、示例性的，发光器件103为OLED(Organic Light-Emitting Diode，有机发光二极管)发光器件、QLED(Quantum Dot Light-Emitting Diode，量子点发光二极管)或Micro LED(Micro Light Emitting Diode，微发光二极管)等发光器件。
在本公开的一些实施例中，柔性基板110除包括所述多个显示单元1和所述多个连接单元2以外，还包括其它膜层。示例性的，参见图4、图6、图7和图8，柔性基板110还包括设置于所述多个显示单元1和所述多个连接单元2的背向胶层120的一侧的薄膜封装层3。此处，薄膜封装层3能够阻隔水氧向各显示单元1和各连接单元2的内部侵入，尤其能够阻隔水氧对各显示单元1内部的发光器件103的侵蚀，延长柔性显示面板100的使用寿命。
示例性的，薄膜封装层3的材料为氮化硅、氧化硅、氧化铝或氮氧化硅等材料中的至少一种。
在一些实施例中，参见图4、图7和图8，薄膜封装层3的与每个连接单元2对应的部分的正投影位于相应的第一离型剂膜140的正投影之内。这样，能够保证薄膜封装层3的与每个连接单元2对应的部分能够跟随相应的连接单元2一起移动，避免因薄膜封装层3被胶层120黏接而对各连接单元2产生束缚。此处，正投影仍然指在可拉伸底膜130上的正投影。
此外，薄膜封装层3的与各连接单元2对应的部分指的是薄膜封装层3覆盖各连接单元2的部分。示例性的，请再次参见图4、图6、图7和图8，薄膜封装层3设置于所述多个显示单元1和所述多个连接单元2的背向胶层120的一侧，并且还覆盖于各连接单元2和各显示单元1的各个侧面，所述各个侧面指的是各连接单元2和各显示单元1的具有层间缝隙的各表面。在此情况下，所述对应的部分包括薄膜封装层3的覆盖于各连接单元2的上面的部分，还包括薄膜封装层3的覆盖于各连接单元2的各侧面的部分。
此处，封装薄膜层3覆盖于各显示单元1和各连接单元2的上面和各侧面，能够保证各显示单元1和各连接单元2处于较为封闭的环境中，避免水氧从所述层间缝隙处渗入，进一步阻隔水氧对各显示单元1中的发光器件103的侵蚀，以提升薄膜封装层3的封装效果。
在本公开的一些实施例中，各显示单元1和各连接单元2还包括其它膜层，下面将参照图8和图9，对柔性显示面板100进行示例性的详细介绍。
在柔性显示面板100中，每个显示单元1包括沿远离胶层120的方向依次设置的第一柔性衬底膜101、第一缓冲膜104、驱动电路102、第一平坦膜105和发光器件103，其中，第一柔性衬底膜101设置于胶层120的背向可拉伸底膜130的一侧。
参见图9，驱动电路102包括：有源层1021、栅极绝缘层1022、栅极1023、层间绝缘层1024、源极1025和漏极1026。其中，栅极绝缘层1022设置于有源层1021的一侧；栅极1023设置于栅极绝缘层1022的背向有源层1021的一侧，且栅极1023在有源层1021上的正投影位于有源层1021之内；层间绝缘层1024设置于栅极1023和栅极绝缘层1022的背向有源层1021的一侧，且覆盖栅极1023；源极1025和漏极1026设置于层间绝缘层1024的背向有源层1021的一侧，栅极绝缘层1022和层间绝缘层1024中设置有两个第一过孔1027，源极1025和漏极1026分别通过不同的第一过孔1027与有源层1021连接。
图9所示出的驱动电路102包括至少一个驱动晶体管，该至少一个驱动晶体管为栅极1025位于有源层1021的背向第一柔性衬底膜101的一侧，这种结构称之为“顶栅”结构。需要说明的是，上述示例是以“顶栅”结构为例进行的说明，但是这并不能对本公开所提供的技术方案构成限定。在另一个示例中，驱动电路102所包括的至少一个驱动晶体管采用“底栅”结构或其他结构。此处，“底栅”结构为栅极1025位于有源层1021的朝向第一柔性衬底膜101的一侧。
发光器件103包括依次层叠设置的第一电极1031、发光层(Emitting Layer，简称EML)1033和第二电极1034。第一电极1031设置于第一平坦膜105的背向胶层120的一侧，且第一电极1031通过设置于第一平坦膜105中的第二过孔1051与驱动电路103连接。
需要说明的是，第一电极1031和第二电极1034之间，可以仅设置有发光层1033，也可以除设置有发光层1033以外，还设置其他多个膜层，在此不 做限定。示例性的，发光器件103还包括：依次层叠设置于第一电极1031和发光层1033之间的空穴注入层、空穴传输层，以及依次层叠设置于发光层1033和第二电极1034之间的电子传输层和电子注入层。
此处，每个显示单元1中发光器件103的第一电极1031为阳极，该阳极与驱动电路103中的源极1025或漏极1026相连接。每个显示单元1中还包括设置于第一平坦膜105的背向胶层120的一侧的像素定义膜1032，每个像素定义膜1032具有开口。每个显示单元1中发光器件103的发光层1033设置于对应像素定义膜1032中的开口内。每个显示单元1中发光器件103的第二电极1034设置于像素定义膜1032和发光层1033的背向胶层120的一侧。
每个连接单元2包括沿远离胶层120的方向依次设置的第二柔性衬底201、第二缓冲膜204、连接电路202和第二平坦膜205，其中，第二柔性衬底膜201设置于胶层120的背向可拉伸底膜130的一侧。
此处，需要说明的是，由于图8所示出的为柔性显示面板100的一部分的剖面图，此处仅以膜层的形式示出连接电路202，其所代表的为连接电路202的部分连接线路，但这并不能作为对于连接电路202的限制。示例性的，连接电路202还包括至少一个开关晶体管。
在一些实施例中，为，将各连接单元2的形状设置为非线性的，例如使其具有至少一个弯曲区域，以提高各连接单元2的拉伸性。这样在柔性显示面板100被拉伸的情况下，各连接单元2在其至少一个弯折区域能够发生一定程度的伸展，使其所连接的两个显示单元1之间的沿拉伸方向上的距离增加，从而有利于柔性显示面板100的拉伸。
示例性的，参见图3和图5，每个连接单元2的与对应的显示单元1连接的两端为弯曲设置，且所述两端的弯曲方向相反。这样，每个连接单元2的位于与对应的显示单元1连接的端部各具有一个如上所述的弯曲区域。并且，该两端的弯折方向相反，使每个连接单元2的位于两端之间的部分在靠近该两端处受到的应力的方向相反，因此更利于每个连接单元2的扭转，进一步增加其所连接的两个显示单元1之间的沿拉伸方向上的距离，使柔性显示面板100更易沿拉伸方向拉伸展开。
本公开的一些实施例中还提供了一种柔性显示装置1000，参见图17，该柔性显示装置1000包括如上所述的任一种柔性显示面板100，柔性显示装置还包括用于驱动柔性显示面板的驱动装置，具体包括驱动电路(图中未示出)。
该柔性显示装置1000具有与前述实施例提供的柔性显示面板100相同的 结构和有益效果。由于前述实施例已经对该柔性显示面板100的有益效果进行了详细的描述，此处不再赘述。
本公开的一些实施例中还提供了一种柔性显示面板的制备方法，参见图10，该柔性显示面板的制备方法包括S100～S400：
S100、提供可拉伸底膜，在可拉伸底膜的一侧表面上形成胶层。
S200、制作柔性基板，所述柔性基板包括多个显示单元和多个连接单元，其中，每相邻的两个显示单元通过至少一个连接单元连接。
S300、在每个连接单元的与所述多个显示单元的待黏接胶层的表面同侧的表面上形成多个第一离型剂膜；或，在所述胶层的背离所述可拉伸底膜的一侧表面上形成与所述多个连接单元一一对应的多个第一离型剂膜。
S400、将所述柔性基板的多个显示单元与所述胶层黏接，所述柔性基板中的每个连接单元在所述可拉伸底膜上的正投影位于对应的第一离型剂膜在所述可拉伸底膜上的正投影之内。
由于该柔性显示面板的制备方法所制备的柔性显示面板具有在保证了显示效果的同时，提高了拉伸可靠性，并能够提高良率的优势，因此，该柔性显示面板的制备方法同样具有这些优势。
需要说明的是，在如上所述的柔性显示面板的制备方法中，由于在可拉伸底膜上形成胶层(S100)与制作柔性基板(S200)，以及在可拉伸底膜上形成胶层(S100)与形成第一离型膜(S300)之间无互相影响，因此，只需保证S100的顺序在S400的顺序之前即可，其与S200的先后顺序和其与S300的先后顺序在此不做限定。例如，在形成了第一离型膜之后，再在可拉伸底膜上形成胶层；例如，在可拉伸底膜上形成胶层与制作柔性基板同时进行；又例如，形成第一离型剂膜与在可拉伸底膜上形成胶层同时进行，此处不再穷尽列举。
需要说明的是，在S100中，可拉伸底膜的一侧表面上形成胶层的方式此处不做限定。示例性的，在可拉伸底膜上涂布制备该胶层的制备组分，例如该组分包括共聚物单体、交联剂以及引发剂，然后将已涂布的制备组分经过固化处理，使其在可拉伸底膜上固化以形成胶层。在另一个示例中，获取成品胶，并将该成品胶经过切割、对位等工序处理后，黏贴在可拉伸底膜上，以在可拉伸底膜的一侧表面上形成所述胶层。需要说明的是，这里胶层成品是指已经制作好的单独的胶层，示例性的，该胶层成品包括胶层本体，以及分别黏接在胶层本体上、下表面的上离型膜和下离型膜，这里上离型膜和下 离型膜较易从胶层本体的表面剥离而不会破坏其表面的黏性，主要起到保护其表面黏性的作用。
示例性的，在S300中，所述多个第一离型剂膜的形成方式包括打印方式或喷涂方式中的至少一种方式。此处，打印方式中所采用的为液体外部离型剂，例如为丙烯酸离型剂、树脂离型剂、有机硅离型剂、氛类离型剂、含氟聚氨酯离型剂、含氟聚硅氧烷离型剂、氟硅离型剂等液体外部离型剂。喷涂方式所采用的为喷雾型离型剂，例如为丙丁烷离型剂等喷雾型离型剂。
在一些实施例中，S300中形成所述多个第一离型剂膜包括：
S301、涂布第一离型剂材料，形成多个离型剂涂布层；
S302、对所述多个离型剂涂布层进行流平，形成所述多个第一离型剂膜。
此处，S302中的流平工艺的作用为使多个离型剂涂布层摊平，并使其中的溶剂在一定时间内挥发掉，从而减少其出现针孔等缺陷的几率，保证所形成的所述多个第一离型剂膜平整。
在一些实施例中，参见图11，上述S200中制作柔性基板包括：
S210、提供第一载板，在第一载板的一侧表面上依次形成柔性衬底层和显示电路层。
S220、将柔性衬底层和显示电路层图案化，使图案化的柔性衬底层包括多个第一柔性衬底膜和多个第二柔性衬底膜，图案化的显示电路层包括多个驱动电路和多个连接电路。
S230、在每个驱动电路的背离第一载板的一侧形成一发光器件。
S240、去除第一载板。柔性基板的每个显示单元包括一个第一柔性衬底膜、一个驱动电路和一个发光器件，柔性基板的每个连接单元包括一个第二柔性衬底膜和一个连接电路。
示例性的，在S220中将柔性衬底层和显示电路层图案化的过程中，所采用的构图工艺包括光刻工艺以及刻蚀步骤在内的工艺。所述光刻工艺是指包括成膜(例如化学气相淀积成膜，Chemical Vapor Deposition，简称CVD)、曝光、显影等工艺过程且利用光刻胶、掩模板、曝光机等形成图形的工艺。
示例性的，在S230中所形成的各发光器件为OLED发光器件，在该种情况下，可以采用喷墨打印制程或蒸镀制程形成各发光器件中的发光层。
在一些实施例中，参见图12，在S200制作柔性基板中还包括以下步骤：
S231、在所述多个显示单元和所述多个连接单元的背离所述第一载板的一侧形成薄膜封装层。
示例性的，参见图11，S231在如上所述的S230和S240之间，也即在每个驱动电路的背离第一载板的一侧形成以发光器件之后，然后在所述多个显示单元和所述多个连接单元的背离所述第一载板的一侧形成薄膜封装层，之后再去除第一载板。
基于此，在一些实施例中，参见图11，在形成第一离型剂膜之前，在形成薄膜封装层之后，如上所述的柔性显示面板的制备方法还包括：
S232、在柔性基板的背离第一载板的一侧依次黏接暂时性保护膜和第二载板。
在将柔性基板的多个显示单元与胶层黏接之后，柔性显示面板的制备方法还包括：
S401、去除暂时性保护膜和第二载板。
此处，暂时性保护膜和第二载板能够保护图案化的柔性基板，避免其在后续形成第一离型膜的过程中遭受破坏。示例性的，柔性基板的与黏接暂时性保护膜和第二载板的膜层为封装薄膜层的情况下，后续形成第一离型膜的过程中，暂时性保护膜和第二载板能够保护封装薄膜层。
需要说明的是，此处不对S232与S240的先后顺序做限定。
示例性的，参见图11，步骤S232在步骤S231和步骤S240之间，也即，先在所述多个显示单元和所述多个连接单元的背离所述第一载板的一侧形成薄膜封装层，然后在柔性基板的背离第一载板的一侧依次黏接暂时性保护膜和第二载板，之后再去除第一载板。这样能够保证柔性基板在与可拉伸底膜黏接之前，均处于受到载板的保护的状态下。
以下将参照图12A～图12J，对如上所述的柔性显示面板的制备方法进行示例性的详细说明。
参见图12A，进行S100：提供可拉伸底膜130，在可拉伸底膜130的一侧表面上形成胶层120。
进行柔性基板110的制作(S200)，制作过程如图12B～图12E所示：
参见图12B，进行S210：提供第一载板00，在第一载板00的一侧表面上依次形成柔性衬底层01和显示电路层02。
参见图12C，进行S220，将柔性衬底层01和显示电路层02图案化，得到图案化的柔性衬底层010和图案化的显示电路层020，其中图案化的柔性衬底层010包括多个第一柔性衬底膜101和多个第二柔性衬底膜201，图案化的显示电路层020包括多个驱动电路102和多个连接电路202。
参见图12D，进行S230，在每个驱动电路102的背离第一载板00的一侧形成一发光器件103。这样，形成了所述多个显示单元1和所述多个连接单元2，其中，每个显示单元1包括一个第一柔性衬底膜101、一个驱动电路102和一个发光器件103，每个连接单元2包括一个第二柔性衬底膜201和一个连接电路202。
参见图12E，进行S231，在所述多个显示单元1和所述多个连接单元2的背离第一载板00的一侧形成薄膜封装层3。
至此，形成了柔性基板110。
需要说明的是，在可拉伸底膜130的一侧表面上形成胶层120(S100)与进行柔性基板110的制作(S200)中的各步骤的先后顺序不做限定。
在制作了柔性基板110之后，参见图12F，进行S232：在柔性基板110的背离第一载板00的一侧依次黏接暂时性保护膜04和第二载板05。
需要说明的是，暂时性保护膜04和第二载板05能够保护柔性基板110的背离第一载板00的一侧表面，例如，在该表面为薄膜封装层3的情况下，暂时性保护膜01和第二载板05能够保护薄膜封装层3在后续制程中不受破坏。
在黏接了暂时性保护膜04和第二载板05之后，参见图12G，进行S240：去除第一载板00。
进行所述多个第一离型膜140的制作，需要说明的是，本公开中对于所述多个第一离型膜140的制作的可实现方式包括多种。
示例性的，参见图12H：
进行步S300A：在每个连接单元2的与所述多个显示单1元的待黏接胶层的表面同侧的表面上形成所述多个第一离型剂膜140。此处，由于在每个连接单元2的与所述多个显示单元1的待黏接胶层的表面上形成第一离型膜140，因此如图12H所示，将第二载板05朝下，使每个显示单元1的相应的表面朝上，便于第一离型剂膜140形成于每个连接单元2上。
在另一个示例中，参见图12H’：
进行S300B：在胶层120的背离可拉伸底膜130的一侧表面上形成与所述多个连接单元2一一对应的所述多个第一离型剂膜140。
这样，形成了所述多个第一离型剂膜140。
参见图12I，进行S400：柔性基板110的所述多个显示单元1与胶层120黏接。其中，柔性基板110中的每个连接单元2在可拉伸底膜130上的正投 影位于对应的第一离型剂膜140在可拉伸底膜130上的正投影之内。
参见图12J，进行S401：去除暂时性保护膜04和第二载板05。
这样，得到柔性显示面板100。
在一些实施例中，参见图6，每个第一离型膜140形成在对应的连接单元1的靠近胶层120的表面上，也即在每个连接单元2的与所述多个显示单元1的待黏接胶层120的表面同侧的表面上形成所述多个第一离型剂膜140的情况下，参见图13和图14，在将柔性基板110的多个显示单元1与胶层120黏接(S400)之前，如上所述的柔性显示面板的制备方法还包括：
S310、在所述多个显示单元1的至少一个连接部11的靠近所述多个第一离型剂膜140的表面上形成至少一个第二离型剂膜150，且至少一个第二离型剂膜150中的每个第二离型剂膜150与相邻设置的第一离型剂膜140连接。
在另一些实施例中，参见图6，每个第一离型剂膜140形成在胶层120的背离可拉伸底膜130的一侧表面上，也即在胶层120的背离可拉伸底膜130的一侧表面上形成与多个连接单元2一一对应的多个第一离型剂膜140的情况下，参见图15和图16，在将柔性基板110的多个显示单元1与胶层120黏接(S400)之前，如上所述的柔性显示面板的制备方法还包括：
S320、在胶层120的背离可拉伸底膜130的一侧表面上形成与所述多个显示单元1的至少一个连接部11一一对应的至少一个第二离型剂膜150，且所述至少一个第二离型剂膜150中的每个第二离型剂膜150与相邻设置的第一离型剂膜140连接。
此处，由于每个第二离型剂膜150与相邻设置的第一离型剂膜140连接，因此在本公开的一些实施例中，能够通过一体成型工艺，在同一道工序中形成每个第二离型剂膜150及与相邻设置的第一离型剂膜140。
在本公开的另一些实施例中，各第一离型剂膜140形成于一道工序中，各第二离型剂膜150形成于另一道工序中。在该种情况下，示例性的，用于制备各第一离型剂膜140的材料不同于用于制备各第二离型剂膜150的材料。例如，各第一离型剂膜140的材料采用成膜后离型力较大的离型剂材料，各第二离型剂膜150的材料采用成膜后离型力较小的离型剂材料。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种柔性显示面板，包括：
    可拉伸底膜；
    胶层，所述胶层设置于所述可拉伸底膜的一侧表面上；
    柔性基板，所述柔性基板包括多个显示单元和多个连接单元，其中，每相邻的两个显示单元通过至少一个连接单元连接；
    以及，多个第一离型剂膜，所述多个第一离型剂膜设置于所述多个连接单元与所述胶层之间，所述多个第一离型剂膜与所述多个连接单元一一对应；
    其中，所述多个连接单元中的每个连接单元在所述可拉伸底膜上的正投影位于对应的第一离型剂膜在所述可拉伸底膜上的正投影之内；
    其中，所述多个显示单元与所述胶层黏接。
  2. 根据权利要求1所述的柔性显示面板，其中，所述多个第一离型剂膜中的每个第一离型剂膜形成在对应的连接单元的靠近所述胶层的表面上。
  3. 根据权利要求1所述的柔性显示面板，其中，所述多个第一离型剂膜中的每个第一离型剂膜形成在所述胶层的背离所述可拉伸底膜的表面上。
  4. 根据权利要求1所述的柔性显示面板，其中，所述多个显示单元中的每个显示单元包括与相连的连接单元一一对应连接的至少一个连接部；
    所述柔性显示面板还包括：
    至少一个第二离型剂膜，所述至少一个第二离型剂膜中的每个第二离型剂膜设置于所述至少一个连接部中的一个连接部与所述胶层之间，且每个第二离型剂膜与相邻设置的第一离型剂膜相连。
  5. 根据权利要求4所述的柔性显示面板，其中，所述每个第二离型剂膜与相邻的第一离型剂膜为一体结构。
  6. 根据权利要求4所述的柔性显示面板，其中，所述每个第二离型剂膜对所述胶层的离型力大于与其相邻的第一离型剂膜对所述胶层的离型力。
  7. 根据权利要求1所述的柔性显示面板，其中，所述多个第一离型剂膜包括丙烯酸型离型剂膜、树脂离型剂膜、有机硅氛类离型剂膜、含氟聚氨酯离型剂膜、含氟聚硅氧烷离型剂膜、氟硅离型剂膜或丙丁烷离型剂膜中的至少一种。
  8. 根据权利要求1所述的柔性显示面板，其中，所述多个显示单元中的每个显示单元包括沿远离所述胶层的方向依次设置的第一柔性衬底膜、驱动电路和发光器件。
  9. 根据权利要求1所述的柔性显示面板，其中，所述每个连接单元包括沿远离所述胶层的方向依次设置的第二柔性衬底膜和连接电路。
  10. 根据权利要求1所述的柔性显示面板，其中，所述柔性基板还包括设置于所述多个连接单元和所述多个显示单元的背向所述胶层的一侧的薄膜封装层。
  11. 根据权利要求10所述的柔性显示面板，其中，所述薄膜封装层的与所述每个连接单元对应的部分的正投影位于相应的第一离型剂膜的正投影之内。
  12. 根据权利要求1所述的柔性显示面板，其中，所述每个连接单元的与对应的显示单元连接的两端为弯曲设置，且所述两端的弯曲方向相反。
  13. 一种柔性显示装置，包括如权利要求1～12任一项所述的柔性显示面板，和用于驱动所述柔性显示面板的驱动电路。
  14. 一种柔性显示面板的制备方法，包括：
    提供可拉伸底膜，在所述可拉伸底膜的一侧表面上形成胶层；
    制作柔性基板，所述柔性基板包括多个显示单元和多个连接单元，其中，每相邻的两个显示单元通过至少一个连接单元连接；
    在所述多个连接单元中的每个连接单元的与所述多个显示单元的待黏接胶层的表面同侧的表面上形成多个第一离型剂膜，或，在所述胶层的背离所述可拉伸底膜的一侧表面上形成与所述多个连接单元一一对应的多个第一离型剂膜；
    将所述多个显示单元与所述胶层黏接，所述每个连接单元在所述可拉伸底膜上的正投影位于对应的第一离型剂膜在所述可拉伸底膜上的正投影之内。
  15. 根据权利要求14所述的柔性显示面板的制备方法，在所述每个连接单元的与所述多个显示单元的待黏接所述胶层的表面同侧的表面上形成所述多个第一离型剂膜的情况下，在将所述多个显示单元与所述胶层黏接之前，所述柔性显示面板的制备方法还包括：
    在所述多个显示单元的至少一个连接部的靠近所述多个第一离型剂膜的表面上形成至少一个第二离型剂膜，且所述至少一个第二离型剂膜中的每个第二离型剂膜与相邻设置的第一离型剂膜连接。
  16. 根据权利要求14所述的柔性显示面板的制备方法，在所述胶层的背离所述可拉伸底膜的一侧表面上形成与所述多个连接单元一一对应的所述多 个第一离型剂膜的情况下，在将所述多个显示单元与所述胶层黏接之前，所述柔性显示面板的制备方法还包括：
    在所述胶层的背离所述可拉伸底膜的一侧表面上形成与所述多个显示单元的至少一个连接部一一对应的至少一个第二离型剂膜，且所述至少一个第二离型剂膜中的每个第二离型剂膜与相邻设置的第一离型剂膜连接。
  17. 根据权利要求14所述的柔性显示面板的制备方法，其中，所述多个第一离型剂膜的形成方式，包括打印方式或喷涂方式中的至少一种方式。
  18. 根据权利要求14所述的柔性显示面板的制备方法，其中，制作柔性基板包括：
    提供第一载板，在所述第一载板的一侧表面上依次形成柔性衬底层和显示电路层；
    将所述柔性衬底层和所述显示电路层图案化，使图案化的柔性衬底层包括多个第一柔性衬底膜和多个第二柔性衬底膜，使图案化的显示电路层包括多个驱动电路和多个连接电路；
    在所述多个驱动电路中的每个驱动电路的背离所述第一载板的一侧形成一发光器件；
    去除所述第一载板；所述多个显示单元中的每个显示单元包括一个第一柔性衬底膜、一个驱动电路和一个发光器件，所述每个连接单元包括一个第二柔性衬底膜和一个连接电路。
  19. 根据权利要求18所述的柔性显示面板的制备方法，其中，制作柔性基板还包括：
    在所述多个显示单元和所述多个连接单元的背离所述第一载板的一侧形成薄膜封装层。
  20. 根据权利要求19所述的柔性显示面板的制备方法，在形成所述多个第一离型剂膜之前，所述柔性显示面板的制备方法还包括：在所述柔性基板的背离所述第一载板的一侧依次黏接暂时性保护膜和第二载板；
    在将所述多个显示单元与所述胶层黏接之后，所述柔性显示面板的制备方法还包括：去除所述暂时性保护膜和所述第二载板。
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