WO2015085751A1 - 用于有机电致发光显示器件的光学薄膜层叠体、其制备方法、有机电致发光显示器件及显示装置 - Google Patents

用于有机电致发光显示器件的光学薄膜层叠体、其制备方法、有机电致发光显示器件及显示装置 Download PDF

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Publication number
WO2015085751A1
WO2015085751A1 PCT/CN2014/080837 CN2014080837W WO2015085751A1 WO 2015085751 A1 WO2015085751 A1 WO 2015085751A1 CN 2014080837 W CN2014080837 W CN 2014080837W WO 2015085751 A1 WO2015085751 A1 WO 2015085751A1
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Prior art keywords
film layer
layer
display device
circular polarizer
film
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Ceased
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PCT/CN2014/080837
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English (en)
French (fr)
Inventor
高雪
刘飞
曾庆慧
王俊然
廖金龙
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BOE Technology Group Co Ltd
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BOE Technology Group Co Ltd
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Priority to US14/420,157 priority Critical patent/US9450210B2/en
Publication of WO2015085751A1 publication Critical patent/WO2015085751A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
    • G02B1/14—Protective coatings, e.g. hard coatings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks
    • 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
    • H10K50/841—Self-supporting sealing arrangements
    • 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
    • H10K50/842—Containers
    • H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
    • 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
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/844—Encapsulations
    • H10K50/8445—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
    • 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
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/871—Self-supporting sealing arrangements
    • 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
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • 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
    • 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
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/10—Organic polymers or oligomers
    • H10K85/141—Organic polymers or oligomers comprising aliphatic or olefinic chains, e.g. poly N-vinylcarbazol, PVC or PTFE
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
    • 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
    • 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
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H10K59/873—Encapsulations
    • H10K59/8731—Encapsulations multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
    • 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

  • the present invention relates to the field of display technology, and more particularly to an optical film laminate for an organic electroluminescence display device, a method for preparing the same, an organic electroluminescence display device, and a display device. Background technique
  • OLEDs organic electroluminescence display devices
  • LCDs liquid crystal displays
  • the structure of the OLED display device mainly comprises: a substrate, an organic electroluminescent pixel array fabricated on the substrate; wherein each of the organic electroluminescent pixel arrays comprises opposite anodes and cathodes, and anodes and cathodes A layer of light between the layers.
  • the luminescence of the OLED display device is achieved by exciting the organic material in the luminescent layer by the electrons in the cathode and the holes in the anode recombining in the luminescent layer.
  • the organic materials used as the light-emitting layer and the active metal used as the cathode are extremely sensitive to moisture and oxygen. Therefore, OLED display devices require higher packaging technology than other display devices.
  • the OLED display device package is not strong, moisture and oxygen may infiltrate into the display from the surrounding environment, thereby causing oxidation of the cathode metal and deterioration of the organic material of the light-emitting layer, so that the life of the OLED display device is shortened, or directly causing fatal damage of the device. And affect the use.
  • the glass cover is mainly used for packaging, and for flexible or large-sized OLED display devices, the existing methods mainly involve simple OLED display devices after thin film packaging.
  • Moisture and oxygen barrier protective film coating and in order to reduce the ambient light is reflected by the OLED display device to reduce display contrast and visibility, after the moisture and oxygen barrier film is attached, the circular polarized light needs to be attached
  • FIG. 1 A schematic structural view is shown in FIG. 1 and includes a base substrate 1, an organic electroluminescence pixel array 2, a package film 3, a moisture and oxygen barrier protective film 4, and a circular polarizer 5.
  • Embodiments of the present invention provide an optical film laminate for an organic electroluminescence display device, a preparation method thereof, an organic electroluminescence display device, and a display device, which are used to solve the existing organic electroluminescence display device.
  • the process of the secondary film is cumbersome, the cost is increased, and the flexible organic electroluminescent display device is difficult to curl.
  • An optical film laminate for an organic electroluminescence display device includes: a circular polarizer film layer, a protective film layer on a light incident side of the circular polarizer film layer, a bonding layer on the light-emitting side of the circular polarizer film layer, and a moisture and oxygen barrier film layer;
  • the moisture and oxygen barrier film layer is located between the circular polarizer film layer and the bonding layer, and/or between the circular polarizer film layer and the protective film layer.
  • the light-incident side of the circular polarizer film layer means that the circular polarizer film layer can prevent light incident from the light-incident side and transmitted through the circular polarizer film layer from being reflected and then transmitted through the circularly polarized light.
  • the film layer is emitted from the light incident side. More specifically, when used in an organic electroluminescence display device, the light incident side of the circular polarizer film is the side on which the ambient light is irradiated onto the circular polarizer film. And the light exiting side of the circular polarizer film layer is the side opposite to the light incident side.
  • the optical film laminate according to the embodiment of the present invention includes a protective film layer, a circular polarizer film layer, a moisture and oxygen barrier film layer, and a bonding layer; since the optical film laminate includes a circular polarizer film layer and Moisture and oxygen barrier film layer, therefore, can have both anti-reflection function and good moisture and oxygen barrier properties.
  • the dual-function optical film laminate is applied to an OLED display device, it can not only solve the OLED display device.
  • the problem of cumbersome process and cost increase caused by the secondary film; and the thickness of the flexible OLED display device brought about by the secondary film can be prevented from being thickened, resulting in difficulty in curling; and the OLED display device can be made thinner and lighter. The effect is better and so on.
  • the circular polarizer film layer comprises: a retardation film layer and a polarizing functional film layer, wherein The retardation film layer is a light exiting side of the circular polarizer film layer, and the polarizing functional film layer is a light incident side of the circular polarizer film layer.
  • the moisture and oxygen barrier film layer comprises one or a combination of the following:
  • the material of the inorganic material film layer is aluminum oxide, titanium oxide, silicon nitride or silicon carbide.
  • the material of the organic material film layer is polymethyl methacrylate.
  • the material of the inorganic organic material mixed film layer is hexamethyldisiloxane (HMDSO) and 0 2 /N 2 0 .
  • HMDSO hexamethyldisiloxane
  • the material of the adhesive layer is a pressure sensitive adhesive (PSA:).
  • PSA pressure sensitive adhesive
  • the method further includes: a release layer, the release layer being located away from the circular polarizer film layer of the adhesive layer On one side.
  • the material of the release layer is a polyethylene release film, a polyethylene terephthalate release film, a oriented polypropylene release film, a polycarbonate release film, polyphenylene.
  • the release layer may be high temperature resistant and may be a composite release film in which two or more materials are composited.
  • An organic electroluminescence display device provided by an embodiment of the invention includes a substrate, an organic electroluminescent pixel array disposed on the substrate, coated on the organic electroluminescence a package film on the outside of the pixel array;
  • An optical film laminate according to any one of the above embodiments of the present invention is further provided on the light-emitting side of the organic electroluminescent display device, wherein the optical film laminate is adhered to the organic electro-electrode by an adhesive layer thereof.
  • the light emitting side of the light emitting display device is further provided on the light-emitting side of the organic electroluminescent display device, wherein the optical film laminate is adhered to the organic electro-electrode by an adhesive layer thereof.
  • the optical film laminate has both anti-reflection function and good moisture and oxygen barrier properties
  • the above organic electroluminescence display device only one film process is required It can solve the problem that the OLED display device has to adhere to the moisture and oxygen barrier film layer and the circular polarizer film layer. Thereby, the manufacturing process difficulty of the OLED display device is reduced, and the OLED display device has the advantages of being lighter and thinner, lower in cost, better in display effect, etc.; for the flexible OLED display device, the curling difficulty caused by the thick thickness of the device can be avoided. problem.
  • the encapsulating film is a light emitting side of the organic electroluminescent display device, and the optical film laminate is attached to the encapsulating film. ;
  • the base substrate is a light exiting side of the organic electroluminescence display device, and the optical film laminate is attached to the base substrate.
  • a display device includes the above-described organic electroluminescence display device provided by the embodiment of the present invention.
  • the method for preparing any one of the above optical film laminates provided by the embodiment of the present invention comprises: forming the moisture and oxygen barrier film layer by a roll-to-roll process or a sheet production process; forming the paste by a coating method Layer
  • the protective film layer is formed using a roll-to-roll process or a sheet production process.
  • the method further comprises: forming the release layer by a roll-to-roll process or a sheet production process after forming the adhesive layer.
  • FIG. 1 is a schematic structural view of a conventional organic electroluminescence display device
  • FIGS. 2a to 2c are schematic structural views of an optical film laminate according to an embodiment of the present invention.
  • 3a to 3g are respectively a junction of a moisture and oxygen barrier film layer provided by an embodiment of the present invention.
  • FIGS. 4a and 4b are respectively schematic structural views of an organic electroluminescent display device according to an embodiment of the present invention.
  • FIG. 5 is a flow chart of a method for preparing an optical film laminate according to an embodiment of the present invention.
  • FIG. 6 is a schematic view showing a roll-to-roll method in a method for preparing an optical film laminate according to an embodiment of the present invention. detailed description
  • the film thickness of each layer in the drawing does not reflect the true ratio of the optical film laminate and the organic electroluminescence display device, and the purpose is only to schematically illustrate the contents of the present invention.
  • An optical film laminate 01 for an organic electroluminescence display device includes: a circular polarizer film layer 001, which is located in the circular polarizer film layer 001. a protective layer 002 on the light side, a bonding layer 003 on the light emitting side of the circular polarizer film layer 001, and a moisture and oxygen barrier film layer 004;
  • the moisture and oxygen barrier film layer 004 is located between the circular polarizer film layer 001 and the adhesive layer 003, and/or between the light incident side of the circular polarizer film layer 001 and the protective film layer 002.
  • the light incident side of the circular polarizer film layer 001 referred to herein refers to the side where the ambient light is incident on the circular polarizer film layer 001.
  • the optical film laminate according to the embodiment of the present invention includes a protective film layer, a circular polarizer film layer, a moisture and oxygen barrier film layer, and a bonding layer; since the optical film laminate includes a circular polarizer film layer and Moisture and oxygen barrier film layer, therefore, can have both anti-reflection function and good moisture and oxygen barrier properties.
  • the dual-function optical film laminate is applied to an OLED display device, it can not only solve the OLED display device.
  • the circular polarizer film layer mainly functions to prevent the passage of reflected light, and the circular polarizer film layer can adopt the existing circular polarizer.
  • the support film layer may also be omitted, and may mainly include: a retardation film layer and a polarizing function film layer;
  • the retardation film layer is the light exiting side of the circular polarizer film layer
  • the polarizing functional film layer is the light incident side of the circular polarizer film layer.
  • the main function of the polarizing functional film layer is to convert the natural light passing through the polarizing functional film layer into linearly polarized light;
  • the retardation film layer is preferably a quarter-wave retarder, whose main function is to pass the linearly polarized light. It becomes circularly polarized light, or converts the passed circularly polarized light into linearly polarized light.
  • the polarizing functional film layer and the retardation film layer are combined, natural light is incident from the polarizing functional film layer, and becomes linearly polarized light after passing through the polarizing functional film layer, and then the linearly polarized light passes through the retardation film layer and then changes from linearly polarized light to left-handed Circularly polarized light, then, after the left-handed circularly polarized light is reflected back, it becomes right-handed circularly polarized light, passes through the retardation film layer again, and changes from right-handed circularly polarized light to linearly polarized light, and the linearly polarized light at this time
  • the previous linearly polarized light is in a vertical state and cannot pass through the linear polarizer, so that the reflected light cannot be transmitted from the polarizing functional film layer, thereby reducing the influence of ambient light and improving contrast.
  • the material of the polarizing functional film layer may be polyvinyl alcohol (PVA) or carbon nanotube (CNT), which is not limited herein.
  • PVA polyvinyl alcohol
  • CNT carbon nanotube
  • the polarizing functional film layer of the circular polarizing film layer is formed by using carbon nanotubes, and the support film layer can be omitted.
  • the moisture and oxygen barrier film layer 004 is preferably located on the light exiting side of the circular polarizer film layer 001 and the bonding layer 003.
  • the distance between the moisture and oxygen barrier film layer is relatively close to the organic electroluminescent pixel array in the OLED display device, so that it can be better
  • the organic electroluminescent pixel array provides protection against water and oxygen.
  • the moisture and oxygen barrier film layer 004 may also be disposed on the light incident side of the circular polarizer film layer 001.
  • the protective film layer 002 and the protective film layer 002 are no limitation between the protective film layer 002 and the protective film layer 002.
  • the organic electroluminescent pixel array in the device has weaker protection against water and oxygen for the organic electroluminescent pixel array. Therefore, the specific design light When the film laminate 01 is to be studied, the moisture and oxygen barrier film layer 004 should be placed as close as possible to the adhesive layer 003.
  • the optical film laminate of the embodiment of the present invention may be provided with a plurality of moisture and oxygen barrier properties.
  • the film layer 004, as shown in FIG. 2c, may be disposed between the light exiting side of the circular polarizer film layer 001 and the adhesive layer 003, and between the light incident side of the circular polarizer film layer 001 and the protective film layer 002.
  • the organic electroluminescent pixel array in the OLED display device can be double-proofed and anti-oxidized, but this also increases the overall thickness of the OLED display device, so that the required moisture can be set according to actual needs. And the number of layers of the oxygen barrier film layer.
  • the moisture and oxygen barrier film layer may specifically comprise one or a combination of the following:
  • Inorganic material film layer - organic material film layer - inorganic material film layer laminate as shown in FIG. 3e; inorganic organic material mixed film layer - organic material film layer - inorganic organic material mixed film layer laminate, as shown in FIG. 3f; as well as
  • the material of each layer of the inorganic material film layer may be the same, It can be different and is not limited here.
  • the material of each layer of the inorganic organic material mixed film layer may be the same , can also be different, not limited here.
  • the material of the inorganic material film layer may specifically be aluminum oxide, titanium dioxide, Silicon nitride or silicon carbide, of course, may also be other inorganic materials capable of realizing the solution of the present invention, which is not limited herein.
  • the thickness of the inorganic material film layer is preferably from 1 Ornn to 1 ⁇ m.
  • the material of the organic material film layer may be polymethyl methacrylate, and of course, other organic materials capable of realizing the solution of the present invention are not limited herein.
  • the film thickness of the organic material film layer is preferably from 1 to 5 ⁇ m.
  • the material of the inorganic-organic material mixed film layer is a mixture of silica and a silicon-carbon long-chain compound, and may of course be other organic-inorganic hybrid materials capable of realizing the solution of the present invention, which is not limited herein.
  • the thickness of the inorganic-organic material mixed film layer is preferably from 1 to 2.5 ⁇ m.
  • the material of the adhesive layer is PSA.
  • the method includes: a release layer 005 located on the light exit side of the bonding layer 003 away from the circular polarizer film layer 001.
  • the release layer can protect the adhesive layer.
  • the release layer is peeled off to make the optical film. The laminate is directly attached to the OLED display device through an adhesive layer.
  • an embodiment of the present invention further provides an organic electroluminescence display device, as shown in FIG. 4a and FIG. 4b, including a substrate substrate 02, and organic electroluminescence disposed on the substrate substrate 02.
  • the optical film laminate 01 provided in the above embodiment of the present invention is further disposed on the light-emitting side of the organic electroluminescent display device, and the adhesive layer in the optical film laminate 01 is attached to the organic electroluminescent display device. Light out side.
  • the optical film laminate has both anti-reflection function and good moisture and oxygen barrier property
  • the above organic electroluminescence display device only one film is required
  • the process can solve the problem that the OLED display device has to adhere to the moisture and oxygen barrier film layer and the circular polarizer film layer. Thereby reducing the manufacturing process difficulty of the OLED display device, and making the OLED display device have the advantages of thinner and lighter, lower cost, better display effect, etc.; for the flexible OLED display device, the thickness of the device can be avoided The resulting problem of curling is difficult.
  • the encapsulating film 04 is the light emitting side of the organic electroluminescent display device, that is, the light emitting type of the organic electroluminescent display device is a top emission type, and the optical film laminate 01 is attached on the encapsulating film 04;
  • the base substrate 02 is a light-emitting side of the organic electroluminescence display device, that is, the light-emitting type of the organic electroluminescence display device is a bottom emission type, and the optical film laminate 01 is attached to the base substrate 02. on.
  • the organic electroluminescent pixel array may include a plurality of organic electro-electrodes composed of an anode, a cathode, and a light-emitting layer between the anode and the cathode.
  • Light structure Specifically, the specific structure of the organic electroluminescent pixel array is prior art, and details are not described herein.
  • an embodiment of the present invention further provides a display device, including the above-mentioned organic electroluminescent display device provided by the embodiment of the present invention, the principle of solving the problem by the display device and the foregoing organic electroluminescent display device.
  • the implementation of the display device can be referred to the implementation of the foregoing organic electroluminescent display device, and the repeated description is omitted.
  • embodiments of the present invention also provide a method of preparing any of the above optical film laminates.
  • An embodiment is shown in FIG. 5, and specifically includes the following steps:
  • FIG. 6 is only an example of forming a four-layer moisture and oxygen barrier film layer 004.
  • a specific structure according to the moisture and oxygen barrier film layer 004 is required. Set the number of reels, which will not be described here.
  • a deposition method may be employed in forming the inorganic material film layer, and a printing method may be employed in forming the organic material film layer.
  • a deposition method may be employed in forming the inorganic material film layer
  • a printing method may be employed in forming the organic material film layer.
  • the specific formation method of the moisture and oxygen barrier film layer is not limited thereto.
  • a protective film layer 002 on the light incident side of the circular polarizer film layer 001 coated with the adhesive layer 003 by a roll-to-roll process or a sheet production process, and a schematic diagram of a specific process of the roll-to-roll process is shown in FIG. 6 is shown.
  • the protective film layer may also be formed by other means that can implement the solution of the present invention, which is not limited herein.
  • the above is only one embodiment of the method of the invention.
  • the order of formation of the respective film layers is not particularly limited as long as the optical film laminate of the present invention can be finally formed.
  • the method further includes: S104, after forming the bonding layer 003, forming a sticky layer by a roll-to-roll process or a sheet production process.
  • the light-emitting side of the circular polarizer film layer 001 of the layer 003 forms a release layer 005, and a schematic diagram of a specific process of the roll-to-roll process is shown in FIG.
  • the release layer may also be formed by other means that can implement the solution of the present invention, which is not limited herein.
  • the steps S103 and S104 may be performed separately or simultaneously, that is, a roll-to-roll process is simultaneously performed to form a protective film layer on both sides of the circular polarizer film layer.
  • a release layer wherein the release layer is formed on a side of the circular polarizer film layer having a bonding layer, and the protective film layer is formed on the other side of the circular polarizer film layer, and a schematic diagram of the specific process is shown in FIG. .
  • Embodiment 1 Embodiment 1:
  • the method of preparing the multi-functional film laminate shown in Fig. 2a by the roll-to-roll method includes the following steps:
  • the circular polarizer film layer 001 wound on the reel is unwound, and then the moisture and oxygen barrier film layer 004 is formed by a conventional process on the light exiting side of the circular polarizer film layer.
  • Four reels 004 are shown in Figure 6, but this is merely illustrative and not limiting.
  • the porous energy film laminate of Fig. 2a has only one layer of moisture and oxygen barrier film, so only one reel 004 is required. The number of required reels 004 is determined based on the number of layers produced.
  • the protective film layer 002 is formed by a roller on the light incident side of the circular polarizer film layer having the function of moisture and oxygen barrier function; and the light exit side of the circular polarizer film layer having the function of moisture and oxygen barrier is completed.
  • the roller forms a bonding layer 003 and a release layer 005.
  • An optical film laminate for an organic electroluminescence display device, a method for fabricating the same, an organic electroluminescence display device, and a display device comprising: a circular polarizer film layer, located in an embodiment of the present invention a protective film layer on the light incident side of the circular polarizer film layer, located in a circle a bonding layer on the light-emitting side of the polarizer film layer, and a moisture and oxygen barrier film layer; wherein the moisture and oxygen barrier film layer is located between the circular polarizer film layer and the bonding layer, and/or Between the circular polarizer film layer and the protective film layer.
  • the optical film laminate includes a circular polarizer film layer and a moisture and oxygen barrier film layer, it can have both an anti-reflection function and a good moisture and oxygen barrier property when the bifunctional optical film laminate is applied.
  • the cumbersome process and the cost increase caused by the secondary film of the OLED display device can be solved; and the thickness of the flexible OLED display device brought by the secondary film can be prevented from becoming thick, resulting in difficulty in curling.
  • the problem can also make the OLED display device have the advantages of being lighter and thinner and having better display effect.

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Abstract

一种有机电致发光显示器件、其光学薄膜层叠体及制备方法，该光学薄膜层叠体（01）包括：圆偏光片膜层（001），位于圆偏光片膜层（001）入光侧的保护膜层（002），位于圆偏光片膜层（001）出光侧的粘结层（003），以及水分和氧气阻透性膜层（004）；其中，水分和氧气阻透性膜层（004）位于圆偏光片膜层（001）出光侧与粘结层（003）之间，和/或，位于圆偏光片膜层（001）入光侧与保护膜层（002）之间。由于该光学薄膜层叠体（01）包括有圆偏光片膜层（001）和水分和氧气阻透性膜层（004），因此可以兼具抗反射功能和良好的水分和氧气阻透性能，当该双功能的光学薄膜层叠体（01）应用到OLED显示器件时，不仅可以解决OLED显示器件因二次贴膜所带来的工艺繁琐、成本升高，以及使柔性OLED显示器件卷曲变困难等问题；同时可以使OLED显示器件具有更轻薄、显示效果更好等优点。

Description

用于有机电致发光显示器件的光学薄膜层叠体、其制备方法、有机电致发 光显示器件及显示装置 技术领域
本发明涉及显示技术领域， 尤指一种用于有机电致发光显示器件的光 学薄膜层叠体、 其制备方法、 有机电致发光显示器件及显示装置。 背景技术
目前， 有机电至夂发光显示器件 ( Organic Electroluminesecent Display, OLED) 与传统的液晶显示器件 （Liquid Crystal Display, LCD) 相比， 由 于具有响应快、 色域广、 超薄、 能实现柔性化等特点， 已经逐渐成为显示 领域的主流。
OLED显示器件的结构主要包括： 衬底基板， 制作在衬底基板上的有 机电致发光像素阵列； 其中， 每个有机电致发光像素阵列都包含相对设置 的阳极和阴极， 以及位于阳极和阴极之间的发光层。 OLED显示器件的发 光是通过阴极中的电子和阳极中的空穴在发光层中复合时， 激发发光层中 的有机材料发光来实现的。而在 OLED显示器件中， 用作发光层的有机材 料以及用作阴极的活泼金属对水气和氧气都极其敏感， 因此， OLED显示 器件需要比其他的显示器件更高的封装技术的支持。如果 OLED显示器件 封装不牢固， 水气和氧气会从周围环境渗入到显示器得内部， 从而造成阴 极金属的氧化和发光层有机材料的变质， 使得 OLED显示器件寿命缩短， 或者直接导致器件致命的损坏而影响使用。
目前， 在中小尺寸的 OLED显示器件中， 主要采用玻璃盖板的封装方 式进行封装， 而对于柔性或者大尺寸的 OLED显示器件， 现有的方法主要 是对 OLED 显示器件简单进行薄膜封装后再进行水分和氧气阻透性保护 膜的贴覆，并且为了降低环境光被 OLED显示器件反射而降低显示对比度 和可视性， 在水分和氧气阻透性膜的贴覆后还需再贴覆圆偏光片， 结构示 意图如图 1所示，包括衬底基板 1、有机电致发光像素阵列 2、封装薄膜 3、 水分和氧气阻透性保护膜 4和圆偏光片 5。 由上述可知， 对于柔性或者大尺寸的 OLED显示器件， 现有的封装方 法需要进行二次贴膜， 从而会带来工艺繁琐、 成本升高等问题， 并且二次 贴膜还会带来使柔性器件厚度变厚， 导致卷曲困难的问题。 发明内容
本发明实施例提供了一种用于有机电致发光显示器件的光学薄膜层 叠体、 其制备方法、 有机电致发光显示器件及显示装置， 用以解决现有的 有机电致发光显示器件需要二次贴膜带来的工艺繁琐、成本升高以及柔性 有机电致发光显示器件卷曲困难的问题。
本发明实施例提供的一种用于有机电致发光显示器件的光学薄膜层 叠体，包括：圆偏光片膜层，位于所述圆偏光片膜层的入光侧的保护膜层， 位于所述圆偏光片膜层的出光侧的粘结层， 以及水分和氧气阻透性膜层； 其中，
所述水分和氧气阻透性膜层位于所述圆偏光片膜层与所述粘结层之 间， 和 /或， 位于所述圆偏光片膜层与所述保护膜层之间。
在本文中， 圆偏光片膜层的入光侧的含义是， 该圆偏光片膜层可以防 止从该入光侧入射并透过该圆偏光片膜层的光经过反射后再透过圆偏光 片膜层从向入光侧射出。 更具体地， 当用于有机电致发光显示器件时， 圆 偏光片膜的入光侧是环境光照射到圆偏光片膜的一侧。且圆偏光片膜层的 出光侧是其与所述入光侧相反的一侧。
本发明实施例提供的上述光学薄膜层叠体， 包括保护膜层、 圆偏光片 膜层、 水分和氧气阻透性膜层以及粘结层； 由于该光学薄膜层叠体包括有 圆偏光片膜层和水分和氧气阻透性膜层， 因此可以兼具抗反射功能和良好 的水分和氧气阻透性能，当该双功能的光学薄膜层叠体应用到 OLED显示 器件时，不仅可以解决 OLED显示器件因二次贴膜所带来的工艺繁琐和成 本升高的问题；而且可以避免二次贴膜带来的柔性 OLED显示器件厚度变 厚， 导致卷曲困难的问题； 同时还可以使 OLED显示器件具有更轻薄、 显 示效果更好等优点。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 所述圆偏光 片膜层包括： 相位差膜层和偏光功能膜层， 其中， 所述相位差膜层为所述圆偏光片膜层的出光侧， 所述偏光功能膜层为 所述圆偏光片膜层的入光侧。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 所述水分和 氧气阻透性膜层包括以下之一或组合：
无机材料膜层；
无机有机材料混合膜层；
无机材料膜层 -有机材料膜层-无机材料膜层层叠体；
无机有机材料混合膜层-有机材料膜层 -无机有机材料混合膜层层叠体; 以及
无机材料膜层-有机材料膜层 -无机有机材料混合膜层层叠体。
较佳地， 为了便于实施， 在本发明实施例提供的上述光学薄膜层叠体 中，所述无机材料膜层的材料为三氧化二铝、二氧化钛、氮化硅或碳化硅。
较佳地， 为了便于实施， 在本发明实施例提供的上述光学薄膜层叠体 中， 所述有机材料膜层的材料为聚甲基丙烯酸甲酯。
较佳地， 为了便于实施， 在本发明实施例提供的上述光学薄膜层叠体 中， 所述无机有机材料混合膜层的材料为六甲基二甲硅醚 (HMDSO)和 02/N20反应的产物。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 所述粘结层 的材料为压敏胶 (PSA：)。
较佳地， 为了便于实施， 在本发明实施例提供的上述光学薄膜层叠体 中， 还包括： 离型层， 所述离型层位于所述粘结层的背离所述圆偏光片膜 层的一侧上。
较佳地， 为了便于实施， 上述离型层的材料为聚乙烯离型膜、 聚对苯 二甲酸乙二醇酯离型膜、 定向聚丙烯离型膜、 聚碳酸酯离型膜、 聚苯乙烯 隔离膜、 聚甲基丙烯酸甲酯离型膜、 双向拉伸聚丙烯离型膜、 4-甲基 -1-戊 烯树脂离型膜、 聚氯乙烯剥离膜、 聚四氟乙烯离型膜、 单硅离型薄膜、 聚 苯醚剥离膜等。 离型层可以是耐高温的， 并且可以是二种或二种以上的材 质复合而成的复合离型膜。
本发明实施例提供的一种有机电致发光显示器件， 包括衬底基板， 设 置在所述衬底基板上的有机电致发光像素阵列， 包覆在所述有机电致发光 像素阵列外侧的封装薄膜；
在所述有机电致发光显示器件的出光侧还设置有本发明实施例提供 的上述任一种光学薄膜层叠体， 所述光学薄膜层叠体中通过其粘结层贴覆 于所述有机电致发光显示器件的出光侧。
本发明实施例提供的上述有机电致发光显示器件， 由于光学薄膜层叠 体兼具抗反射功能和良好的水分和氧气阻透性能， 因此， 在上述有机电致 发光显示器件中，只要一次贴膜工艺就可以解决 OLED显示器件既要贴水 分和氧气阻透性膜层又要贴圆偏光片膜层的问题。从而降低 OLED显示器 件的制备工艺难度， 并且使 OLED显示器件具有更轻薄、 成本更低、 显示 效果更好等优点； 对于柔性 OLED显示器件， 还可避免因器件厚度较厚所 导致的卷曲困难的问题。
较佳地， 在本发明实施例提供的上述有机电致发光显示器件中， 所述封装薄膜为所述有机电致发光显示器件的出光侧， 所述光学薄膜 层叠体贴覆于所述封装薄膜上； 或
所述衬底基板为所述有机电致发光显示器件的出光侧， 所述光学薄膜 层叠体贴覆于所述衬底基板上。
本发明实施例提供的一种显示装置， 包括本发明实施例提供的上述有 机电致发光显示器件。
本发明实施例提供的上述任一种光学薄膜层叠体的制备方法， 包括： 采用卷对卷工艺或片式生产工艺形成所述水分和氧气阻透性膜层； 采用涂覆法形成所述粘结层；
采用卷对卷工艺或片式生产工艺形成所述保护膜层。
较佳地， 在本发明实施例提供的上述制备方法中， 还包括： 在形成所 述粘结层之后， 采用卷对卷工艺或片式生产工艺形成所述离型层。 附图说明
图 1为现有的有机电致发光显示器件的结构示意图；
图 2a至图 2c分别为本发明实施例提供的光学薄膜层叠体的结构示意 图；
图 3a至图 3g分别为本发明实施例提供的水分和氧气阻透性膜层的结 构示意图；
图 4a和图 4b分别为本发明实施例提供的有机电致发光显示器件的结 构示意图；
图 5为本发明实施例提供的光学薄膜层叠体的制备方法的流程图； 图 6为本发明实施例提供的光学薄膜层叠体制备方法中的卷对卷方式 的示意图。 具体实施方式
下面结合附图， 对本发明实施例提供的用于有机电致发光显示器件的 光学薄膜层叠体、 其制备方法、 有机电致发光显示器件及显示装置的具体 实施方式进行详细地说明。
其中， 附图中各层薄膜厚度不反映光学薄膜层叠体和有机电致发光显 示器件的真实比例， 目的只是示意说明本发明内容。
本发明实施例提供的一种用于有机电致发光显示器件的光学薄膜层 叠体 01， 如图 2a至图 2c所示， 包括： 圆偏光片膜层 001， 位于圆偏光片 膜层 001的入光侧的保护膜层 002， 位于圆偏光片膜层 001的出光侧的粘 结层 003， 以及水分和氧气阻透性膜层 004; 其中，
水分和氧气阻透性膜层 004位于圆偏光片膜层 001与粘结层 003之间， 和 /或， 位于圆偏光片膜层 001的入光侧与保护膜层 002之间。
值得注意的是， 这里所指的圆偏光片膜层 001的入光侧是指环境光照 射到圆偏光片膜层 001的一侧。本发明实施例提供的上述光学薄膜层叠体， 包括保护膜层、 圆偏光片膜层、 水分和氧气阻透性膜层以及粘结层； 由于 该光学薄膜层叠体包括有圆偏光片膜层和水分和氧气阻透性膜层， 因此可 以兼具抗反射功能和良好的水分和氧气阻透性能， 当该双功能的光学薄膜 层叠体应用到 OLED显示器件时，不仅可以解决 OLED显示器件因二次贴 膜所带来的工艺繁琐和成本升高的问题； 而且可以避免二次贴膜带来的柔 性 OLED显示器件厚度变厚， 导致卷曲困难的问题； 同时还可以使 OLED 显示器件具有更轻薄、 显示效果更好等优点。
具体地， 在本发明实施例提供的上述光学薄膜层叠体中， 圆偏光片膜 层主要起防止反射光通过的作用， 圆偏光片膜层可以采用现有的圆偏光片 也可以是省去支撑膜层 （TAC) , 主要可以包括： 相位差膜层和偏光功能 膜层； 其中，
相位差膜层为圆偏光片膜层的出光侧， 偏光功能膜层为圆偏光片膜层 的入光侧。
具体地， 偏光功能膜层的主要作用是将通过该偏光功能膜层的自然光 转变为线偏振光； 相位差膜层优选为四分之一波长延迟片， 其主要作用是 使通过的线偏振光变为圆偏振光， 或将通过的圆偏振光变为线偏振光。 将 偏光功能膜层和相位差膜层结合， 自然光从偏光功能膜层入射， 经偏光功 能膜层之后变为线偏振光， 然后该线偏振光经过相位差膜层之后从线偏振 光变为左旋圆偏振光， 之后， 当该左旋圆偏振光被反射回来后变为右旋圆 偏振光， 再次经过相位差膜层， 从右旋圆偏振光变为线偏振光， 此时的线 偏振光与之前的线偏振光呈垂直状态， 不能通过线偏光片， 这样反射光就 不能够从该偏光功能膜层透过， 从而减小环境光的影响， 提高对比度。
进一歩地， 在本发明实施例提供的上述光学薄膜层叠体中， 偏光功能 膜层的材料可以为聚乙烯醇 （PVA), 也可以为碳纳米管 （CNT), 在此不 做限定。 较佳地， 由于碳纳米具有自支撑功能， 采用碳纳米管制作圆偏光 片膜层的偏光功能膜层， 可以省去制作支撑膜层。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 如图 2a所 示， 水分和氧气阻透性膜层 004优选位于圆偏光片膜层 001的出光侧与粘 结层 003之间，这样，当上述光学薄膜层叠体应用到 OLED显示器件中时， 水分和氧气阻透性膜层距 OLED 显示器件中有机电致发光像素阵列的距 离就相对较近， 从而可以更好的对有机电致发光像素阵列起到防水和防氧 的保护作用。
当然，在具体实施时，在本发明实施例提供的上述光学薄膜层叠体中， 如图 2b所示，水分和氧气阻透性膜层 004也可以设置于圆偏光片膜层 001 的入光侧与保护膜层 002之间， 在此不做限定。
需要说明的是， 水分和氧气阻透性膜层 004越靠近保护膜层 002， 即 当上述光学薄膜层叠体 01应用到 OLED显示器件中时， 水分和氧气阻透 性膜层 004越远离 OLED显示器件中的有机电致发光像素阵列，其对于有 机电致发光像素阵列起到防水和防氧的保护作用越弱， 因此， 具体设计光 学薄膜层叠体 01时， 应该将水分和氧气阻透性膜层 004设置在尽量靠近 粘结层 003。
较佳地， 为了更近一歩地对有机电致发光像素阵列起到防水和防氧的 保护作用， 在本发明实施例提供的上述光学薄膜层叠体中， 可以设置多个 水分和氧气阻透性膜层 004， 如图 2c所示， 可以在圆偏光片膜层 001的出 光侧与粘结层 003之间，以及在圆偏光片膜层 001的入光侧与保护膜层 002 之间都设置水分和氧气阻透性膜层 004。 这样， 就可以对 OLED显示器件 中的有机电致发光像素阵列起到双重的防水、 防氧作用， 但是这样也会使 OLED显示器件的整体厚度增加， 因此， 可以根据实际需要， 设置所需水 分和氧气阻透性膜层的层数。
进一歩地， 在本发明实施例提供的上述光学薄膜层叠体中， 如图 2c 所示， 当在圆偏光片膜层 001的两侧都设置有水分和氧气阻透性膜层 004 时， 位于圆偏光片膜层 001两侧的水分和氧气阻透性膜层 004的结构可以 相同， 也可以不同， 在此不做限定。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 水分和氧气 阻透性膜层具体可以包括以下之一或组合：
无机材料膜层， 如图 3a和 3b所示；
无机有机材料混合膜层， 如图 3c和 3d所示；
无机材料膜层 -有机材料膜层-无机材料膜层层叠体， 如图 3e所示； 无机有机材料混合膜层-有机材料膜层 -无机有机材料混合膜层层叠体， 如图 3f所示； 以及
无机材料膜层-有机材料膜层 -无机有机材料混合膜层层叠体， 如图 3g 所示。
进一歩地， 在本发明实施例提供的上述光学薄膜层叠体中， 当水分和 氧气阻透性膜层的结构包含多层无机材料膜层时， 各层无机材料膜层的材 料可以相同， 也可以不同， 在此不做限定。
同样， 在本发明实施例提供的上述光学薄膜层叠体中， 当水分和氧气 阻透性膜层的结构包含多层无机有机材料混合膜层时， 各层无机有机材料 混合膜层的材料可以相同， 也可以不同， 在此不做限定。
具体地，上述无机材料膜层的材料具体可以为三氧化二铝、二氧化钛、 氮化硅或碳化硅， 当然也可以为能够实现本发明方案的其它无机材料， 在 此不做限定。 无机材料膜层厚度优选为 lOrnn至 1 μ m。
具体地， 上述有机材料膜层的材料可以为聚甲基丙烯酸甲酯， 当然也 可以为能够实现本发明方案的其它有机材料， 在此不做限定。 有机材料膜 层厚度为的膜层厚度优选为 1至 5μπι。
具体地，上述无机有机材料混合膜层的材料为二氧化硅和硅-碳长链化 合物的混合物， 当然也可以为能够实现本发明方案的其它有机无机混合材 料， 在此不做限定。 无机有机材料混合膜层厚度优选为 1至 2.5μπι。
较佳地， 在本发明实施例提供的上述光学薄膜层叠体中， 粘结层的材 料为 PSA。
较佳地， 在光学薄膜层叠体贴覆于 OLED显示器件之前， 为了对其粘 结层进行保护， 在本发明实施例提供的上述光学薄膜层叠体中， 如图 2a 至图 2c所示， 还可以包括： 位于粘结层 003背离圆偏光片膜层 001的出 光侧的离型层 005。 这样， 当该光学薄膜层叠体在应用于 OLED显示器件 之前，离型层可以对粘结层进行保护，当该光学薄膜层叠体在应用于 OLED 显示器件时， 剥离离型层， 使该光学薄膜层叠体通过粘结层直接贴覆于 OLED显示器件上。
基于同一发明构思， 本发明实施例还提供了一种有机电致发光显示器 件， 如图 4a和图 4b所示， 包括衬底基板 02， 设置在所述衬底基板 02上 的有机电致发光像素阵列 03， 包覆在有机电致发光像素阵列 03外侧的封 装薄膜 04;
在有机电致发光显示器件的出光侧还设置有上述本发明实施例提供 的任一种光学薄膜层叠体 01， 该光学薄膜层叠体 01中的粘结层贴覆于有 机电致发光显示器件的出光侧。
本发明实施例提供的上述有机电致发光显示器件， 由于光学薄膜层叠 体兼具抗反射功能和良好的水分和氧气阻透性性能， 因此， 在上述有机电 致发光显示器件中，只要一次贴膜工艺就可以解决 OLED显示器件既要贴 水分和氧气阻透性膜层又要贴圆偏光片膜层的问题。从而降低 OLED显示 器件的制备工艺难度， 并且使 OLED显示器件具有更轻薄、 成本更低、 显 示效果更好等优点； 对于柔性 OLED显示器件， 还可避免因器件厚度较厚 所导致的卷曲困难的问题。
具体地， 在本发明实施例提供的上述有机电致发光显示器件中， 如图
4a所示， 封装薄膜 04为有机电致发光显示器件的出光侧， 即该有机电致 发光显示器件的发光类型为顶发射型， 光学薄膜层叠体 01 贴覆于封装薄 膜 04之上； 或， 如图 4b所示， 衬底基板 02为有机电致发光显示器件的 出光侧， 即该有机电致发光显示器件的发光类型为底发射型， 光学薄膜层 叠体 01贴覆于衬底基板 02之上。
进一歩地， 在本发明实施例提供的上述有机电致发光显示器件中， 有 机电致发光像素阵列可以包括多个由阳极、 阴极以及位于阳极和阴极之间 的发光层所组成的有机电致发光结构。 具体地， 有机电致发光像素阵列的 具体结构为现有技术， 在此不做赘述。
基于同一发明构思， 本发明实施例还提供了一种显示装置， 包括本发 明实施例提供的上述有机电致发光显示器件， 由于该显示装置解决问题的 原理与前述一种有机电致发光显示器件相似， 因此该显示装置的实施可以 参见前述有机电致发光显示器件的实施， 重复之处不再赘述。
基于同一发明构思， 本发明实施例还提供了上述任一种光学薄膜层叠 体的制备方法。 一个实施方案如图 5所示， 具体包括以下歩骤：
5101、采用卷对卷工艺或片式生产工艺在圆偏光片膜层 001的入光侧 和 /或出光侧形成水分和氧气阻透性膜层 004， 其采用卷对卷工艺的具体过 程的示意图如图 6所示； 图 6中仅是以形成 4层的水分和氧气阻透性膜层 004为例进行图示， 在具体实施时， 需要根据水分和氧气阻透性膜层 004 的具体结构设置卷轴的个数， 在此不作赘述。
具体地， 在形成无机材料膜层时可以采用沉积的方式， 在形成有机材 料膜层时可以采用打印的方式， 当然水分和氧气阻透性膜层的具体形成方 式并不限于此。
5102、在形成有水分和氧气阻透性膜层 004的圆偏光片膜层 001的出 光侧涂覆粘结层 003， 其具体过程的示意图如图 6所示；
5103、采用卷对卷工艺或片式生产工艺在涂覆有粘结层 003的圆偏光 片膜层 001的入光侧形成保护膜层 002， 其采用卷对卷工艺的具体过程的 示意图如图 6所示。 具体地， 在具体实施时， 保护膜层也可以通过其他可以实现本发明方 案的方式形成， 在此不做限定。
以上只是本发明的方法的一个实施方案。对各个膜层的形成次序没有 特别的限制， 只要最后能够形成本发明的光学薄膜层叠体即可。
较佳地， 在本发明实施例提供的上述制备方法中， 如图 5所示， 还可 以包括： S104、 在形成粘结层 003之后， 采用卷对卷工艺或片式生产工艺 在形成有粘结层 003的圆偏光片膜层 001的出光侧形成离型层 005， 其采 用卷对卷工艺的具体过程的示意图如图 6所示。
具体地， 在具体实施时， 离型层也可以通过其他可以实现本发明方案 的方式形成， 在此不做限定。
较佳地， 在本发明实施例提供的上述制备方法中， 歩骤 S103和 S104 可以分别进行， 也可以同时进行， 即采用卷对卷工艺同时在圆偏光片膜层 两侧分别形成保护膜层和离型层， 其中， 离型层形成于圆偏光片膜层具有 粘结层的一侧， 保护膜层形成于圆偏光片膜层的另一侧， 其具体过程的示 意图如图 6所示。 实施例一：
如图 6所示， 采用卷对卷方式制备图 2a所示的多功能膜层叠体的方 法包括如下歩骤：
首先， 将卷绕在卷轴上的圆偏光片膜层 001解绕， 之后， 在圆偏光片 膜层出光侧采用现有工艺制作水分和氧气阻透性膜层 004。 图 6中示出了 四个卷轴 004， 但这仅是示意性而非限制性的。 图 2a的多孔能膜层叠体仅 有一层水分和氧气阻透性膜层， 故仅需要一个卷轴 004。 根据制作膜层的 数量来确定所需卷轴 004的个数。
最后， 在完成具有水分和氧气阻透性功能的圆偏光片膜层的入光侧利 用滚轮形成保护膜层 002; 在完成具有水分和氧气阻透性功能的圆偏光片 膜层的出光侧利用滚轮形成粘结层 003以及离型层 005。
本发明实施例提供的一种用于有机电致发光显示器件的光学薄膜层 叠体、 其制备方法、 有机电致发光显示器件及显示装置， 该光学薄膜层叠 体包括： 圆偏光片膜层， 位于圆偏光片膜层的入光侧的保护膜层， 位于圆 偏光片膜层的出光侧的粘结层， 以及水分和氧气阻透性膜层； 其中， 水分 和氧气阻透性膜层位于圆偏光片膜层与粘结层之间，和 /或，位于圆偏光片 膜层与保护膜层之间。 由于该光学薄膜层叠体包括有圆偏光片膜层和水分 和氧气阻透性膜层， 因此可以兼具抗反射功能和良好的水分和氧气阻透性 能， 当该双功能的光学薄膜层叠体应用到 OLED显示器件时， 不仅可以解 决 OLED显示器件因二次贴膜所带来的工艺繁琐和成本升高的问题；而且 可以避免二次贴膜带来的柔性 OLED显示器件厚度变厚，导致卷曲困难的 问题； 同时还可以使 OLED显示器件具有更轻薄、 显示效果更好等优点。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离 本发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权 利要求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在 内。

Claims

权 利 要 求
1. 一种用于有机电致发光显示器件的光学薄膜层叠体， 其特征在于， 包括： 圆偏光片膜层， 位于所述圆偏光片膜层的入光侧的保护膜层， 位于 所述圆偏光片膜层的出光侧的粘结层，以及水分和氧气阻透性膜层；其中， 所述水分和氧气阻透性膜层位于所述圆偏光片膜层与所述粘结层之 间， 和 /或， 位于所述圆偏光片膜层与所述保护膜层之间。
2. 如权利要求 1所述的光学薄膜层叠体，其特征在于，所述圆偏光片 膜层包括： 相位差膜层和偏光功能膜层， 其中，
所述相位差膜层为所述圆偏光片膜层的出光侧， 所述偏光功能膜层为 所述圆偏光片膜层的入光侧。
3. 如权利要求 1所述的光学薄膜层叠体，其特征在于，所述水分和氧 气阻透性膜层包括以下之一或组合：
无机材料膜层；
无机有机材料混合膜层；
由无机材料膜层、有机材料膜层和无机材料膜层依次层叠而成的层叠 体；
由无机有机材料混合膜层、有机材料膜层和无机有机材料混合膜层依 次层叠而成的层叠体； 以及
由无机材料膜层、有机材料膜层和无机有机材料混合膜层依次层叠而 成的层叠体。
4. 如权利要求 3所述的光学薄膜层叠体，其特征在于，所述无机材料 膜层的材料为三氧化二铝、 二氧化钛、 氮化硅或碳化硅。
5. 如权利要求 3所述的光学薄膜层叠体，其特征在于，所述有机材料 膜层的材料为聚甲基丙烯酸甲酯。
6. 如权利要求 3所述的光学薄膜层叠体，其特征在于，所述无机有机 材料混合膜层的材料为六甲基二甲硅醚和 02/N20反应的产物。
7. 如权利要求 1所述的光学薄膜层叠体，其特征在于，所述粘结层的 材料是压敏胶。
8. 如权利要求 1-7任一项所述的光学薄膜层叠体， 其特征在于， 还包 括： 离型层， 所述离型层位于所述粘结层的背离所述圆偏光片膜层的一侧 上。
9. 一种有机电致发光显示器件，包括衬底基板， 设置在所述衬底基板 上的有机电致发光像素阵列， 包覆在所述有机电致发光像素阵列外侧的封 装薄膜， 其特征在于：
在所述有机电致发光显示器件的出光侧还设置有如权利要求 1-7任一 项所述的光学薄膜层叠体， 其中， 所述光学薄膜层叠体通过其粘结层贴覆 于所述有机电致发光显示器件的出光侧。
10. 如权利要求 9所述的有机电致发光显示器件， 其特征在于， 所述封装薄膜为所述有机电致发光显示器件的出光侧， 所述光学薄膜 层叠体贴覆于所述封装薄膜上； 或
所述衬底基板为所述有机电致发光显示器件的出光侧， 所述光学薄膜 层叠体贴覆于所述衬底基板上。
11. 一种显示装置， 其特征在于，包括如权利要求 9或 10所述的有机 电致发光显示器件。
12. 一种如权利要求 1-8任一项所述的光学薄膜层叠体的制备方法， 其特征在于， 在所述圆偏光片膜层上：
采用卷对卷工艺或片式生产工艺形成所述水分和氧气阻透性膜层； 采用涂覆法形成所述粘结层；
采用卷对卷工艺或片式生产工艺形成所述保护膜层。
13. 如权利要求 12所述的制备方法， 其特征在于， 还包括： 在形成所述粘结层之后， 采用卷对卷工艺或片式生产工艺形成所述离 型层。
PCT/CN2014/080837 2013-12-10 2014-06-26 用于有机电致发光显示器件的光学薄膜层叠体、其制备方法、有机电致发光显示器件及显示装置 Ceased WO2015085751A1 (zh)

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