WO2015085712A1 - 一种多功能封装膜及显示装置 - Google Patents

一种多功能封装膜及显示装置 Download PDF

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Publication number
WO2015085712A1
WO2015085712A1 PCT/CN2014/077663 CN2014077663W WO2015085712A1 WO 2015085712 A1 WO2015085712 A1 WO 2015085712A1 CN 2014077663 W CN2014077663 W CN 2014077663W WO 2015085712 A1 WO2015085712 A1 WO 2015085712A1
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Prior art keywords
film layer
film
layer
multifunctional packaging
water
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PCT/CN2014/077663
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English (en)
French (fr)
Inventor
曾庆慧
李重君
徐晓光
刘飞
王继亮
Original Assignee
京东方科技集团股份有限公司
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Priority to US14/435,034 priority Critical patent/US20160025912A1/en
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
Publication of WO2015085712A1 publication Critical patent/WO2015085712A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • 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
    • G02B1/18—Coatings for keeping optical surfaces clean, e.g. hydrophobic or photo-catalytic films
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3083—Birefringent or phase retarding elements
    • 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
    • H10K50/844—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
    • H10K50/86—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
    • H10K59/80—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/20—Inorganic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/24—Organic non-macromolecular coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/42—Polarizing, birefringent, filtering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/206—Organic displays, e.g. OLED

Definitions

  • Multifunctional packaging film and display device Multifunctional packaging film and display device
  • the present invention relates to the field of OLED processing technology, and in particular, to a multifunctional packaging film and a display device. Background technique
  • OLEDs organic electroluminescent displays
  • LCDs organic electroluminescent displays
  • active metals as cathodes for displays
  • OLED devices need to be supported by higher and safer packaging technologies than other display technologies. If the package is not strong, water and oxygen will penetrate into the display from the surrounding environment, causing oxidation of the cathode metal and deterioration of the organic material, which shortens the life of the OLED display or directly causes fatal damage to the device and affects the use.
  • the conventional solution is to perform a simple film encapsulation and then apply a water-blocking oxygen film.
  • a water-blocking oxygen film in order to reduce the influence of ambient light on the display effect of the OLED, it is also necessary to coat a layer of circular polarizer film on the outside of the water blocking oxygen film.
  • the secondary film causes cumbersome process and high cost, and the secondary film makes the thickness of the flexible device thicker, which causes difficulty in curling, and greatly reduces the display performance of the OLED display. Summary of the invention
  • the object of the present invention is to solve the cumbersome and costly process of coating the two-layer film of the anti-reflection film and the water-blocking oxygen film in the process of packaging the OLED display in the prior art, and at the same time
  • the film makes the thickness of the flexible device thicker, which causes difficulty in curling, and reduces defects such as display performance of the OLED display.
  • a multi-functional packaging film comprising: a plurality of different functional film layers laminated on each other, the plurality of different functional film layers comprising at least a polarizing film layer, a retardation film layer, Water blocking oxygen film layer and supporting film layer.
  • the retardation film layer is located below the polarizing film layer; the water blocking oxygen film layer is located above and/or below the polarizing film layer; and the support The film layer is located above and/or below the polarizing film layer.
  • the support film layer includes an upper support film layer above the polarizing film layer and a lower support film layer located below the polarizing film layer;
  • the support film layer is located between the polarizing film layer and the retardation film layer.
  • the water-blocking oxygen film layer includes an upper water-blocking oxygen film layer above the polarizing film layer and a lower water-blocking oxygen film layer located below the polarizing film layer.
  • the upper water-blocking oxygen film layer is located above or below the upper support film layer.
  • the polarizing film layer is a film layer having linear polarization.
  • the polarizing film layer is polyvinyl alcohol PVA.
  • the polarizing film layer has a thickness of 10 nm to 50 ⁇ m.
  • the retardation film is a 1/4 wavelength phase difference film or a film layer formed by laminating a 1/4 wavelength retardation film and a 1/2 wavelength retardation film.
  • the film thickness of the retardation film is 10 nm to 100 um.
  • the upper water-blocking oxygen film layer and/or The water blocking film layer is an inorganic material or an inorganic organic mixed material.
  • the inorganic material is SiNx or
  • the inorganic material is a metal oxide.
  • the metal oxide is A1 2 0 3 or Ti0 2 .
  • the inorganic-organic hybrid material is a mixture of PP-HMDSO (lasma-polymerized hexamethyldisiloxane) and SiNx, SiOx or SiOC.
  • the upper water-blocking oxygen film layer and/or the lower water blocking film layer has a film thickness of 10 nm to 5 ⁇ m.
  • the upper support film layer and/or the lower support film layer material is a triacetate film, an acrylic, a cycloolefin polymer film or a polycarbonate film.
  • the film thickness of the upper support film layer and/or the lower support film layer is lum ⁇ 100 um.
  • the outer side of the multifunctional film is provided with a protective film layer and a heterogeneous film layer, respectively.
  • a display device comprising: a display panel on which the multi-functional packaging film is attached.
  • the above technical solution of the present invention has the following advantages:
  • the present invention provides a multi-functional packaging film, which can realize the anti-reflection and water-blocking effect by simply encapsulating the OLED device and then coating a multi-layer packaging film. Simple, and can effectively reduce the thickness and weight of OLED devices, thereby improving their display quality.
  • DRAWINGS 1 is a schematic structural view of a multifunctional membrane according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a multifunctional membrane according to Embodiment 2 of the present invention.
  • FIG. 3 is a schematic view showing the structure of a multifunctional membrane according to an embodiment of the present invention. detailed description
  • a multi-functional packaging film comprising: a plurality of different functional film layers laminated to each other, the plurality of different functional film layers including at least a polarizing film layer and a retardation film layer , water blocking oxygen film layer and support film layer.
  • the present invention provides a multi-functional packaging film comprising seven layers, which are respectively a protective film layer 6, an upper supporting film layer 2, a polarizing film layer 1, a lower supporting film layer 3, a retardation film 4, The lower water-blocking oxygen film layer 5 and the heterogeneous film layer 7.
  • the protective film layer 6, the upper support film layer 2, the polarizing film layer 1, the lower support film layer 3, the retardation film 4, the lower water-blocking oxygen film layer 5, and the opposite-layer film layer 7 are in order from top to bottom. Laminated together to form a laminate.
  • the polarizing film layer 1 is a film layer having linear polarization properties.
  • the polarizing film layer 1 is preferably PVA.
  • the polarizing film layer can be made of other materials having the same characteristics as PVA, in addition to PVA.
  • the thickness of the polarizing film layer 1 is preferably 10 nm to 50 ⁇ m, and may be 20 nm, 50 nm, 100 nm, lum, 10 um, 20 um, in a state where the curling and anti-reflection are optimal. and many more.
  • the retardation film is a 1/4 wavelength retardation film or a film layer formed by laminating a 1/4 wavelength retardation film and a 1/2 wavelength retardation film.
  • the film thickness of the retardation film is preferably from 10 nm to 100 ⁇ m.
  • the retardation film 4 is provided below the polarizing film layer 1, and together with the polarizing film layer 1, it can effectively exhibit an antireflection effect.
  • the film layer which functions as a water-blocking oxygen in the embodiment is a layer, and is a lower water-blocking film layer.
  • the lower water blocking film layer is located below the retardation film 4.
  • the lower water blocking film layer is an inorganic material or an inorganic organic mixed material.
  • the inorganic material may be SiNx or SiC, and the inorganic material may also be a metal oxide such as A1 2 0 3 or Ti0 2 ;
  • the inorganic organic mixed material may be PP-HMDSO (lasma-polymerized hexamethyldisiloxane) and SiNx, SiOx or Mixing of SiOC.
  • the inorganic material and the inorganic organic mixed material can effectively block the corrosion of the display device by the external environment such as water and oxygen, in addition to the phase difference film made of the inorganic material or the inorganic organic mixed material.
  • the device is damaged.
  • the thickness of the water-blocking oxygen film layer is set to be 10 nm to 5 ⁇ m. For example, it may be 20 nm, 50 nm, 100 nm, 200 nm, 500 nm or the like.
  • the upper support film layer 2 is preferably a triacetate film (TAC), an acrylic, a cycloolefin polymer (COP) film or a polycarbonate (PQ film).
  • TAC triacetate film
  • COP cycloolefin polymer
  • PQ film polycarbonate
  • the upper supporting film layer functions to support the polarizing film layer 1.
  • the upper support film layer can be applied in addition to the materials listed above, and other materials having the same or similar chemical properties as the material.
  • the film thickness of the upper support film layer is lum ⁇ 100um.
  • a protective film layer may be disposed on the uppermost layer of the multifunctional film, and the lowermost layer may be provided with an adhesive and an anisotropic film layer.
  • the protective film layer and the heterogeneous film layer are respectively attached to the outermost side of the multifunctional film to protect the multifunctional film layer.
  • the heterogeneous film layer needs to be removed first, and the protective film layer may be selectively removed or not removed.
  • the protective film layer and the heterogeneous film layer may be used in the prior art.
  • the lower support film and the 1/4 wavelength retardation film are roll-wound, and the polarizing film is processed by the roll-to-roll immersion and stretching process, and then bonded to the upper support film and the lower support film with the retardation film attached thereto. After the bonding, the roll-to-roll water-proof oxygen film is deposited, and finally the protective film and the profile film are attached.
  • the multi-functional packaging film provided by the embodiment of the invention can realize the anti-reflection and water-blocking effect by simply encapsulating the OLED device with a multi-layer packaging film, and the process operation is simple, and the OLED device can be effectively reduced. Thickness and weight, which in turn enhances its display
  • the multi-functional packaging film comprises eight layers, which are: a protective film layer 6, an upper water-blocking oxygen film layer 8, and an upper supporting film layer 2;
  • the protective film layer 6, the upper water-blocking oxygen film layer 8, the upper supporting film layer 2, the polarizing film layer 1, the lower supporting film layer 3, the retardation film 4, the lower water-blocking oxygen film layer 5, and the opposite sex The film layers 7 are laminated in this order from top to bottom to form a laminate.
  • the retardation film 4 in this embodiment uses a 1/4 wavelength retardation film layer, which is preferably located between the lower support film layer 3 and the lower water blocking oxygen film layer 5.
  • the film layer which functions as a water-blocking oxygen is two layers, which are an upper water blocking film layer 8 and a lower water blocking film layer 5, respectively.
  • the material of the upper water-blocking oxygen film layer 8 may be the same as the material of the lower water-blocking oxygen film layer 5
  • the upper water-blocking oxygen film layer 8 is preferably an inorganic material or an inorganic-organic hybrid material, wherein the inorganic material may be SiNx or SiC, and the inorganic material may also be a metal oxide such as A1 2 0 3 , Ti0. 2 ;
  • the inorganic-organic hybrid material may be a mixture of PP-HMDSO (lasma-polymerized hexamethyldisiloxane) and SiNx, SiOx or SiOC.
  • the polarizing film is bonded to the upper and lower support films by a roll-to-roll immersion and drawing process, and after being bonded, the roll-to-roll water- and oxygen-proof film is deposited, and finally the protective film and the profile film are attached. cover.
  • the multi-functional packaging film provided by the embodiment of the invention can realize the anti-reflection and water-blocking effect by simply encapsulating the OLED device with a multi-layer packaging film, and the process operation is simple, and the OLED device can be effectively reduced. Thickness and weight, which in turn enhances its display
  • the multi-functional package film shown in the embodiment of the present invention comprises 7 layers, which are: a protective film layer 6, an upper support film layer 2, an upper water-blocking oxygen film layer 8, and a polarizing film layer 1.
  • the protective film layer 6, the upper support film layer 2, the upper water blocking oxygen film layer 8, the polarizing film layer 1, the lower water blocking oxygen film layer 5, the retardation film 4, and the heterogeneous film layer 7 are from top to bottom.
  • the lower layers are sequentially laminated to form a laminate.
  • the lower water-blocking oxygen film layer 5 used in the present embodiment can also function to support the polarizing film layer 1.
  • the roll-to-roll upper and lower water-blocking oxygen film is deposited, and then bonded to the upper support film to which the 1/4 wavelength retardation film is bonded. Finally, the protective film and the profile film are attached.
  • the multifunctional packaging film provided by the embodiment of the invention can directly reflect the OLED device and then attach a multi-layer packaging film to achieve anti-reflection and water-blocking effects. Simple, and can effectively reduce the thickness and weight of the OLED device, thereby improving its display port ⁇
  • the present invention further provides a display device including a display panel on which the multi-functional packaging film of the above embodiment is attached.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electroluminescent Light Sources (AREA)
  • Polarising Elements (AREA)

Abstract

一种多功能封装膜及显示装置，该多功能封装膜包括相互层叠在一起的多个不同功能的膜层，所述多个不同功能的膜层至少包括偏光膜层、相位差膜层、阻水氧膜层和支撑膜层。将OLED器件简单薄膜封装后再贴覆一层多功能封装膜即可实现抗反射、阻水氧的作用，工艺操作简单，并且可有效降低OLED器件的厚度和重量，进而提升其显示品质。

Description

一种多功能封装膜及显示装置
技术领域 本发明涉及 OLED加工工艺技术领域， 特别涉及一种多功能封装 膜及显示装置。 背景技术
与传统的 LCD显示器相比， 有机电致发光显示器（OLED ) 由于 其具有反映快、 色域广、 超薄、 能实现柔性化等特点， 已逐渐成为显 示领域的主流。 但是由于使用了有机材料以及用活泼金属作为显示器 的阴极， 其对水氧极其敏感， OLED 器件需要比其他的显示技术更高 更安全的封装技术来支持。 若封装不牢固， 水和氧气会从周围环境渗 入显示器内部， 造成阴极金属的氧化和有机材料的变质， 使得 OLED 显示器寿命缩短， 或者直接导致器件致命的损坏而影响使用。
对于柔性或者大尺寸 OLED显示器件现有的方案是先对其进行简 单薄膜封装后， 然后再进行阻水氧膜的贴覆。 另外， 为了降低环境光 对 OLED显示效果的影响，还需要在阻水氧膜外贴覆一层圓偏光片膜。 实际应用中发现， 二次贴膜导致工艺繁瑣、 成本升高， 同时二次贴膜 使得柔性器件厚度变厚导致卷曲困难， 大大降低了 OLED显示器的显 示性能。 发明内容
本发明的目的旨在解决现有技术中存在的上述问题和缺陷的至少 一个方面。
(一）要解决的技术问题
本发明的目的是解决现有技术中封装 OLED显示器过程中需要贴 覆抗反射膜和阻水氧膜两层膜带来的工艺繁瑣、 成本升高， 同时二次 贴膜使得柔性器件厚度变厚导致卷曲困难， 降低 OLED显示器的显示 性能等缺陷。
(二）技术方案
根据本发明的一个方面， 提供一种多功能封装膜， 包括： 相互层 叠在一起的多个不同功能的膜层， 所述多个不同功能的膜层至少包括 偏光膜层、 相位差膜层、 阻水氧膜层和支撑膜层。
根据本发明的一个实例性的实施例， 所述相位差膜层位于所述偏 光膜层的下方； 所述阻水氧膜层位于所述偏光膜层的上方和 /或下方； 并且所述支撑膜层位于所述偏光膜层的上方和 /或下方。
根据本发明的另一个实例性的实施例， 所述支撑膜层包括位于所 述偏光膜层的上方的上支撑膜层和位于所述偏光膜层的下方的下支撑 膜层； 并且所述下支撑膜层位于偏光膜层和相位差膜层之间。
根据本发明的另一个实例性的实施例， 所述阻水氧膜层包括位于 偏光膜层的上方的上阻水氧膜层和位于偏光膜层的下方的下阻水氧膜 层。
根据本发明的另一个实例性的实施例， 所述上阻水氧膜层位于所 述上支撑膜层的上方或下方。
根据本发明的另一个实例性的实施例， 所述偏光膜层为具有线偏 光性的膜层。
根据本发明的另一个实例性的实施例， 所述偏光膜层为聚乙烯醇 PVA。
根据本发明的另一个实例性的实施例， 所述偏光膜层的厚度为 10nm-50um。
根据本发明的另一个实例性的实施例，所述相位差膜为 1/4波长相 位差膜或由 1/4波长相位差膜与 1/2波长相位差膜叠加形成的膜层。
根据本发明的另一个实例性的实施例， 所述相位差膜的膜厚为 10nm~100um„
才艮据本发明的另一个实例性的实施例， 所述上阻水氧膜层和 /或下 阻水膜层为无机材料或无机有机混合材料。
根据本发明的另一个实例性的实施例， 所述无机材料为 SiNx 或
SiC。
根据本发明的另一个实例性的实施例， 所述无机材料为金属氧化 物。
根据本发明的另一个实例性的实施例， 所述金属氧化物为 A1203 或 Ti02。
根据本发明的另一个实例性的实施例， 所述无机有机混合材料为 PP-HMDSO ( lasma-polymerized hexamethyldisiloxane )与 SiNx、 SiOx 或 SiOC的混合物。
才艮据本发明的另一个实例性的实施例， 所述上阻水氧膜层和 /或下 阻水膜层的膜厚为 10nm~5um。
才艮据本发明的另一个实例性的实施例， 所述上支撑膜层和 /或下支 撑膜层材料为三醋酸纤维膜、 亚克力、 环烯烃聚合物膜或聚碳酸酯 膜。
才艮据本发明的另一个实例性的实施例， 所述上支撑膜层和 /或下支 撑膜层的膜厚为 lum~100um。
根据本发明的另一个实例性的实施例， 所述多功能膜的两外侧分 别设有保护膜层和异性膜层。
根据本发明的另一个方面， 提供一种显示装置， 其特征在于， 包 括显示面板， 所述显示面板上贴覆前述多功能封装膜。
(三）有益效果
本发明的上述技术方案具有如下优点： 本发明提供一种多功能封 装膜， 将 OLED器件简单薄膜封装后再贴覆一层多功能封装膜即可实 现抗反射、 阻水氧的作用， 工艺操作简单， 并且可有效降低 OLED器 件的厚度和重量， 进而提升其显示品质。 附图说明 图 1为本发明实施例一多功能膜结构示意图；
图 2为本发明实施例二多功能膜结构示意图；
图 3为本发明实施例三多功能膜结构示意图。 具体实施方式
下面通过实施例， 并结合附图， 对本发明的技术方案作进一步具 体的说明。 在说明书中， 相同或相似的附图标号指示相同或相似的部 件。 下述参照附图对本发明实施方式的说明旨在对本发明的总体发明 构思进行解释， 而不应当理解为对本发明的一种限制。
根据本发明的一个总体构思， 提供一种多功能封装膜， 包括： 相 互层叠在一起的多个不同功能的膜层， 所述多个不同功能的膜层至少 包括偏光膜层、 相位差膜层、 阻水氧膜层和支撑膜层。
下面结合附图和实施例， 对本发明的具体实施方式作进一步详细 描述。 以下实施例用于说明本发明， 但不用来限制本发明的范围。
实施例一
如图 1 所示， 本发明提供一种多功能封装膜， 包括七层， 依次分 别为保护膜层 6、 上支撑膜层 2、 偏光膜层 1、 下支撑膜层 3、 相位差 膜 4、 下阻水氧膜层 5和异性膜层 7。
如图 1所示， 保护膜层 6、 上支撑膜层 2、 偏光膜层 1、 下支撑膜 层 3、 相位差膜 4、 下阻水氧膜层 5和异性膜层 7从上至下依次层叠在 一起， 形成一个层叠体。
其中， 该偏光膜层 1 为具有线偏光性性能的膜层。 该偏光膜层 1 优选为 PVA。当然，该偏光膜层除了釆用 PVA,也可以釆用其他与 PVA 具有相同特性的材料制作。
若该偏光膜层的厚度较厚， 则会加重显示器的厚度， 无法实现超 薄性能， 并且不易卷曲。 若偏光膜层的厚度较薄， 则达不到抗反射的 效果。 在确保可卷曲和抗反射最佳的状态下， 设置偏光膜层 1 的厚度 优选 10nm-50um,例如可以为 20nm、 50nm、 100nm、 lum、 10um、 20um 等等。
其中， 相位差膜为 1/4波长相位差膜或由 1/4波长相位差膜与 1/2 波长相位差膜叠加形成的膜层。
该相位差膜的膜厚优选为 10nm~100um。
将相位差膜 4设于偏光膜层 1的下方， 与偏光膜层 1一起可有效 起到抗反射作用。
其中， 本实施例中起到阻水氧作用的膜层为一层， 为下阻水膜层。 该下阻水膜层位于相位差膜 4 的下方。 该下阻水膜层为无机材料或无 机有机混合材料。 其中， 无机材料可为 SiNx、 SiC, 无机材料还可为金 属氧化物， 如 A1203、 Ti02; 所述无机有机混合材料可为 PP-HMDSO ( lasma-polymerized hexamethyldisiloxane )与 SiNx、 SiOx或 SiOC的 混合。
当然， 该无机材料、 无机有机混合材料除了釆用上述列举的材料 釆用无机材料或无机有机混合材料制成的相位差膜， 可有效阻挡 水氧等外界环境对显示器件的腐蚀， 避免对显示器件进行损坏。
若该下阻水膜层的厚度较厚， 则会加重显示器的厚度， 无法实现 超薄性能， 并且不易卷曲。 若下阻水膜层的厚度较薄， 则起不到较好 的阻挡水氧作用。 因此， 在确保可卷曲和阻水氧最佳的状态下， 设置 的厚度喜下阻水氧膜层的膜厚为 10nm~5um。例如可以为 20nm、 50nm、 100nm、 200nm、 500nm等等。
上支撑膜层 2 优选三醋酸纤维膜 (TAC)、 亚克力、 环烯烃聚合物 (COP)膜或聚碳酸酯 (PQ膜。
由于偏光膜层非常柔软， 该上支撑膜层则起到支撑偏光膜层 1 的 作用。 该上支撑膜层除了采用上述列举的材料外， 与该材料具有相同 或相似化学性质的其他材料同样可以适用。
为了起到较好的支撑作用 ， 设置上支撑膜层的膜厚为 lum~100um。 另外， 在实际产品中， 为了最大程度保护该多功能封装膜不受外 界破坏， 在所述多功能膜的最上层可设置保护膜层， 其最下层可以设 有黏着剂和异性膜层。 该保护膜层和异性膜层分别贴覆在多功能膜的 最外侧， 起到保护多功能膜层的作用。 在具体使用中， 需要先揭除该 异性膜层， 保护膜层可选择揭除或不揭除。
该保护膜层和异性膜层釆用现有技术中的膜层即可。
下面描述一下本实施例多功能膜的制作方法：
将下支撑膜与 1/4波长相位差膜进行卷对卷贴合，偏光膜釆用卷对 卷浸泡和拉伸工艺处理后与上支撑膜以及贴有相位差膜的下支撑膜进 行贴合， 贴合后进行卷对卷阻水氧薄膜的沉积， 最后进行保护膜和异 形膜的贴覆。
本发明实施例提供的多功能封装膜， 将 OLED器件简单薄膜封装 后再贴覆一层多功能封装膜即可实现抗反射、 阻水氧的作用， 工艺操 作简单， 并且可有效降低 OLED器件的厚度和重量， 进而提升其显示 口 贝
实施例二
如图 2所述， 本发明实施例与实施例一存在的区别在于， 该多功 能封装膜包括 8层， 其依次为： 保护膜层 6、 上阻水氧膜层 8、 上支撑 膜层 2、 偏光膜层 1、 下支撑膜层 3、 相位差膜 4、 下阻水氧膜层 5和 异性膜层 7。
如图 2所示， 保护膜层 6、 上阻水氧膜层 8、 上支撑膜层 2、 偏光 膜层 1、 下支撑膜层 3、 相位差膜 4、 下阻水氧膜层 5和异性膜层 7从 上至下依次层叠在一起， 形成一个层叠体。
本实施例中的相位差膜 4釆用 1/4波长相位差膜层，其优选位于下 支撑膜层 3和下阻水氧膜层 5之间。
本实施例中起到阻水氧作用的膜层为两层， 分别为上阻水膜层 8 和下阻水膜层 5。
其中， 上阻水氧膜层 8的材料可以同下阻水氧膜层 5的材料一样， 当然也可以不一样， 该上阻水氧膜层 8优选为无机材料或无机有机混 合材料，其中，无机材料可为 SiNx、 SiC,无机材料还可为金属氧化物， 如 A1203 、 Ti02； 所述无机有机混合材料可为 PP-HMDSO ( lasma-polymerized hexamethyldisiloxane )与 SiNx、 SiOx或 SiOC的 混合。
下面描述一下本实施例多功能膜的制作方法：
偏光膜釆用卷对卷浸泡和拉伸工艺处理后与上、 下支撑膜进行贴 合， 贴合后进行卷对卷上、 下阻水氧薄膜的沉积， 最后进行保护膜和 异形膜的贴覆。
本发明实施例提供的多功能封装膜， 将 OLED器件简单薄膜封装 后再贴覆一层多功能封装膜即可实现抗反射、 阻水氧的作用， 工艺操 作简单， 并且可有效降低 OLED器件的厚度和重量， 进而提升其显示 口 贝
实施例三
如图 3所示， 本发明实施例所示的多功能封装膜包括 7层， 其依 次为： 保护膜层 6、 上支撑膜层 2、 上阻水氧膜层 8、 偏光膜层 1、 下 阻水氧膜层 5、 相位差膜 4和异性膜层 7。
如图 3所示， 保护膜层 6、 上支撑膜层 2、 上阻水氧膜层 8、 偏光 膜层 1、 下阻水氧膜层 5、 相位差膜 4和异性膜层 7从上至下依次层叠 在一起， 形成一个层叠体。
本实施例中釆用的下阻水氧膜层 5除了起到阻水氧的作用， 另夕卜， 还可以起到支撑偏光膜层 1的作用。
下面描述一下本实施例多功能膜的制作方法：
偏光膜釆用卷对卷浸泡和拉伸工艺处理后， 然后进行卷对卷上、 下阻水氧薄膜的沉积，之后与贴合了 1/4波长相位差膜的上支撑膜进行 贴合， 最后进行保护膜和异形膜的贴覆。
本发明实施例提供的多功能封装膜， 将 OLED器件简单薄膜封装 后再贴覆一层多功能封装膜即可实现抗反射、 阻水氧的作用， 工艺操 作简单， 并且可有效降低 OLED器件的厚度和重量， 进而提升其显示 口口 臾
另外， 本发明还提供一种显示装置， 包括显示面板， 所述显示面 板上贴覆上述实施例中的多功能封装膜。
以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领 域的普通技术人员来说， 在不脱离本发明技术原理的前提下， 还可以 做出若干改进和替换， 这些改进和替换也应视为本发明的保护范围。

Claims

权 利 要 求
1、 一种多功能封装膜， 其特征在于， 包括：
相互层叠在一起的多个不同功能的膜层， 所述多个不同功能的膜 层至少包括偏光膜层、 相位差膜层、 阻水氧膜层和支撑膜层。
2、 如权利要求 1所述的多功能封装膜， 其特征在于，
所述相位差膜层位于所述偏光膜层的下方；
所述阻水氧膜层位于所述偏光膜层的上方和 /或下方； 并且 所述支撑膜层位于所述偏光膜层的上方和 /或下方。
3、 如权利要求 2所述的多功能封装膜， 其特征在于，
所述支撑膜层包括位于所述偏光膜层的上方的上支撑膜层和位于 所述偏光膜层的下方的下支撑膜层； 并且
所述下支撑膜层位于偏光膜层和相位差膜层之间。
4、 如权利要求 3所述的多功能封装膜， 其特征在于，
所述阻水氧膜层包括位于偏光膜层的上方的上阻水氧膜层和位于 偏光膜层的下方的下阻水氧膜层。
5、 如权利要求 4所述的多功能封装膜， 其特征在于， 所述上阻水 氧膜层位于所述上支撑膜层的上方或下方。
6、 如权利要求 1所述的多功能封装膜， 其特征在于， 所述偏光膜 层为具有线偏光性的膜层。
7、 如权利要求 6所述的多功能封装膜， 其特征在于， 所述偏光膜 层为聚乙烯醇 PVA。
8、 如权利要求 6所述的多功能封装膜， 其特征在于， 所述偏光膜 层的厚度为 10匪-50謹。
9、 如权利要求 1所述的多功能封装膜， 其特征在于，
所述相位差膜为 1/4波长相位差膜或由 1/4波长相位差膜与 1/2波 长相位差膜叠加形成的膜层。
10、 如权利要求 9所述的多功能封装膜， 其特征在于， 所述相位 差膜的膜厚为 10nm~100um。
11、 如权利要求 4所述的多功能封装膜， 其特征在于，
所述上阻水氧膜层和 /或下阻水膜层为无机材料或无机有机混合材 料。
12、 如权利要求 11所述的多功能封装膜， 其特征在于， 所述无机 材料为 SiNx或 SiC。
13、 如权利要求 12所述的多功能封装膜， 其特征在于， 所述无 机材料为金属氧化物。
14、 如权利要求 13所述的多功能封装膜， 其特征在于， 所述金属 氧化物为 A1203或 Ti02。
15、 如权利要求 11所述的多功能封装膜， 其特征在于， 所述无机有机混合材料为 PP-HMDSO与 SiNx、 SiOx或 SiOC的 混合物。
16、 如权利要求 11所述的多功能封装膜， 其特征在于， 所述上阻 水氧膜层和 /或下阻水膜层的膜厚为 10nm~5um。
17、 如权利要求 3所述的多功能封装膜， 其特征在于，
所述上支撑膜层和 /或下支撑膜层材料为三醋酸纤维膜、 亚克力、 环烯烃聚合物膜或聚碳酸酯膜。
18、 如权利要求 3 所述的多功能封装膜， 其特征在于， 所述上支 撑膜层和 /或下支撑膜层的膜厚为 lum~100um。
19、 如权利要求 1 所述的多功能封装膜， 其特征在于， 所述多功 能膜的两外侧分别设有保护膜层和异性膜层。
20、 一种显示装置， 其特征在于， 包括显示面板， 所述显示面板 上贴覆权利要求 1-19任一项所述的多功能封装膜。
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