WO2018068394A1 - 蓝光补偿膜与oled显示装置 - Google Patents

蓝光补偿膜与oled显示装置 Download PDF

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WO2018068394A1
WO2018068394A1 PCT/CN2016/110905 CN2016110905W WO2018068394A1 WO 2018068394 A1 WO2018068394 A1 WO 2018068394A1 CN 2016110905 W CN2016110905 W CN 2016110905W WO 2018068394 A1 WO2018068394 A1 WO 2018068394A1
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blue
film
light
transparent film
luminescent material
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PCT/CN2016/110905
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English (en)
French (fr)
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李冬泽
陈黎暄
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深圳市华星光电技术有限公司
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Priority to US15/329,239 priority Critical patent/US10565938B2/en
Publication of WO2018068394A1 publication Critical patent/WO2018068394A1/zh

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    • 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
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • 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
    • H10K59/30—Devices specially adapted for multicolour light emission
    • H10K59/38—Devices specially adapted for multicolour light emission comprising colour filters or colour changing media [CCM]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a blue compensation film and an OLED display device.
  • OLED Organic Light-Emitting Diode
  • OLED display also known as organic electroluminescent display, is an emerging flat panel display device, which has self-luminous Low driving voltage, high luminous efficiency, short response time, high definition and contrast ratio, near 180° viewing angle, wide temperature range, flexible display and large-area full-color display, etc., recognized by the industry as the most developed Potential display device.
  • OLED can be divided into two types: passive matrix OLED (PMOLED) and active matrix OLED (AMOLED), namely direct addressing and thin film transistor matrix addressing.
  • PMOLED passive matrix OLED
  • AMOLED active matrix OLED
  • the AMOLED has pixels arranged in an array, belongs to an active display type, has high luminous efficiency, and is generally used as a high-definition large-sized display device.
  • the OLED generally includes a substrate, an anode provided on the substrate, a hole injection layer provided on the anode, a hole transport layer provided on the hole injection layer, a light-emitting layer provided on the hole transport layer, and a light-emitting layer.
  • the principle of luminescence of OLED display devices is that semiconductor materials and organic luminescent materials are driven by electric fields, causing luminescence by carrier injection and recombination.
  • an OLED display device generally employs an ITO pixel electrode and a metal electrode as anodes and cathodes of the device, respectively.
  • electrons and holes are injected from the cathode and the anode to the electron transport layer and the hole transport layer, respectively.
  • the holes migrate to the light-emitting layer through the electron transport layer and the hole transport layer, respectively, and meet in the light-emitting layer to form excitons and excite the light-emitting molecules, and the latter emits visible light through radiation relaxation.
  • the main application mode of OLED is the full-surface evaporation of red (R), green (G), and blue (B) three-color electroluminescent materials, which together form a white OLED (WOLED) with color filter.
  • RGB red
  • G green
  • B blue
  • the Colour filter realizes color display, and the above modes of technology have been mass-produced by individual panel manufacturers.
  • the above WOLED with Colour Filter realizes the panel technology of color display, which is essentially It is an organic electroluminescent device, and white light is formed by electroluminescence of R, G, and B materials.
  • white light is formed by electroluminescence of R, G, and B materials.
  • the main problem faced by the technical field is that it is affected by the luminescence lifetime of the blue light material, resulting in the appearance of the luminescent device after a period of use.
  • the problem of yellowish color is essentially It is an organic electroluminescent device, and white light is formed by electroluminescence of R, G, and B materials.
  • the object of the present invention is to provide a blue light compensation film, which can effectively improve the color shift condition caused by the short life of the blue electroluminescent material in the white light OLED device, and solve the problem that the conventional OLED display device is prone to yellowish color.
  • Another object of the present invention is to provide an OLED display device comprising the above-mentioned blue light compensation film, which does not cause color shift problem and has good display quality.
  • the present invention provides a blue light compensation film comprising an adhesive layer, a first transparent film, and a second transparent film which are laminated in this order from bottom to top;
  • the blue light compensation film satisfies at least one of the following two conditions:
  • Condition 1 at least one of the adhesive layer, the first transparent film, and the second transparent film is doped with a blue up-converting luminescent material;
  • Condition 2 at least one of a first spacing position between the adhesive layer and the first transparent film, and a second spacing position between the first transparent film and the second transparent film There is a blue light upconverting luminescent material;
  • the blue light upconverting luminescent material comprises at least one of an upconversion organic luminescent material based on a triplet-triplet annihilation and a rare earth ion doped host material; the blue upconverting luminescent material capable of absorbing light greater than a blue light wavelength And convert it to blue light.
  • the blue upconverting luminescent material selectively absorbs light having a wavelength greater than 630 nm and converts it into blue light having a wavelength of 460 nm to 490 nm.
  • the triplet-triplet quenching-based upconversion organic luminescent material comprises at least one of a combination of bipyridylium and 9,10-diphenylanthracene, and a combination of tetraphenylbenzoporphyrin platinum and ruthenium;
  • the matrix material includes at least one of a halide, an oxide, an oxyhalide, a sulfur-containing compound, and a sulfur oxide; the rare earth ion includes Er 3+ , At least one of Tm 3+ , Dy 3+ , Tb 3+ , Ho 3+ , and Eu 3+ .
  • the first transparent film and the second transparent film respectively comprise one or more of a polyethylene terephthalate film, a polyimide film, a cellulose triacetate film, and a cycloolefin polymer film;
  • the first transparent film and the second transparent film are respectively a single layer film or a composite film of a multilayer film.
  • the material of the adhesive layer includes a pressure sensitive adhesive.
  • the blue up-conversion luminescent material is mixed with the resin and cured on at least one of the first spaced position and the second spaced position to form a blue up-converting luminescent material layer.
  • a blue up-converting luminescent material is not disposed between the first transparent film and the second transparent film, and the first transparent film and the second transparent film are a single transparent film as a whole.
  • the present invention also provides an OLED display device comprising an OLED light emitting device and a blue light compensation film disposed on a light exiting side of the OLED light emitting device, the blue light compensation film being a blue light compensation film as described above, the blue light compensation film Attached to the light exit side of the OLED light emitting device by its adhesive layer.
  • the light emitted by the OLED light emitting device is white light
  • the light emitting material of the OLED light emitting device comprises a red electroluminescent material, a green electroluminescent material, and a blue electroluminescent material
  • the white light emitted by the OLED light emitting device is red
  • the red light emitted by the electroluminescent material, the green light emitted by the green electroluminescent material, and the blue light emitted by the blue electroluminescent material are mixed.
  • the present invention also provides a blue light compensation film comprising an adhesive layer, a first transparent film, and a second transparent film which are laminated in this order from bottom to top;
  • the blue light compensation film satisfies at least one of the following two conditions:
  • Condition 1 at least one of the adhesive layer, the first transparent film, and the second transparent film Doped with a blue light upconversion luminescent material;
  • Condition 2 at least one of a first spacing position between the adhesive layer and the first transparent film, and a second spacing position between the first transparent film and the second transparent film There is a blue light upconverting luminescent material;
  • the blue light upconverting luminescent material comprises at least one of an upconversion organic luminescent material based on a triplet-triplet annihilation and a rare earth ion doped host material; the blue upconverting luminescent material capable of absorbing light greater than a blue light wavelength And convert it to blue light;
  • the blue upconverting luminescent material selectively absorbs light having a wavelength greater than 630 nm and converts it into blue light having a wavelength of 460 nm to 490 nm;
  • the material of the adhesive layer comprises a pressure sensitive adhesive.
  • the invention provides a blue light compensation film, which utilizes a blue light up-conversion luminescent material to absorb long-wavelength light having a wavelength greater than a blue light wavelength and excites a short-wavelength blue light, thereby effectively improving the white light OLED device due to blue light.
  • the color shifting condition caused by the short lifetime of the luminescent material realizes the blue light compensation of the white OLED device, and solves the problem that the conventional OLED display device is prone to yellowish color.
  • the OLED display device provided by the invention comprises the above-mentioned blue light compensation film, which does not cause color shift problem and has good display quality.
  • FIG. 1 is a schematic structural view of a first embodiment of a blue light compensation film of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of a blue light compensation film of the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of a blue light compensation film of the present invention.
  • FIG. 4 is a schematic structural view of a fourth embodiment of a blue light compensation film of the present invention.
  • Figure 5 is a schematic view showing the structure of a fifth embodiment of the blue light compensation film of the present invention.
  • FIG. 6 is a schematic structural view of an OLED display device of the present invention.
  • the present invention utilizes the properties of upconverting luminescent materials to achieve a blue light compensation effect of a white OLED device, which refers to a material having anti-stokes properties, the upconverting luminescent material High-energy light is excited by low-energy light, just opposite to Stokes' luminescence mechanism.
  • light with a low frequency of long wavelengths excites light of a short wavelength.
  • absorbing infrared light excites visible light, or absorbing red light to excite blue and green light.
  • the up-conversion process requires many intermediate states to accumulate the energy of the low-frequency excited photons.
  • the present invention first provides a blue compensation film 50, comprising an adhesive layer 30, a first transparent film 10, and a second transparent film 20 laminated in this order from bottom to top;
  • Condition 1 at least one of the adhesive layer 30, the first transparent film 10, and the second transparent film 20 is doped with a blue up-converting luminescent material;
  • Condition 2 a first spacing position between the adhesive layer 30 and the first transparent film 10, and a second spacing position between the first transparent film 10 and the second transparent film 20 At least one of the blue light-up conversion luminescent materials;
  • the blue light upconverting luminescent material comprises at least one of an upconversion organic luminescent material based on a triplet-triplet annihilation and a rare earth ion doped host material; the blue upconverting luminescent material capable of absorbing light greater than a blue light wavelength And convert it to blue light.
  • the blue light up-converting luminescent material selectively absorbs light having a wavelength greater than 630 nm and converts it into blue light having a wavelength of 460 nm to 490 nm.
  • the blue-light up-converting luminescent material is nano-sized particles, and the nano-sized particles have a particle diameter ranging from 20 nm to 100 nm.
  • the up-converting organic light-emitting material based on the triplet-triplet state quenching generally includes a donor and a acceptor, and the donor electron transitions to the acceptor level, and the two triplet states are annihilated to generate a new energy level. , to achieve low energy conversion into high energy radiation.
  • the triplet-triplet quenching-based upconversion organic luminescent material comprises a combination of bipyridylium and 9,10-diphenylfluorene (DPA), and tetraphenylbenzoporphyrin platinum and ruthenium (II) At least one of a combination of naphthene;
  • DPA 9,10-diphenylfluorene
  • II tetraphenylbenzoporphyrin platinum and ruthenium
  • the bipyridylium is a donor
  • the 9,10-diphenylfluorene is a receptor
  • the tetraphenylbenzoporphyrin platinum is a donor, and the ruthenium is a acceptor.
  • the matrix material includes at least one of a halide, an oxide, an oxyhalide, a sulfur-containing compound, and a sulfur oxide;
  • the halide is preferably Fluoride
  • the oxyhalide is preferably oxyfluoride;
  • the rare earth ions include Er 3+ ( ⁇ ), Tm 3+ ( ⁇ ), Dy 3+ ( ⁇ ), Tb 3+ ( ⁇ ), Ho 3+ At least one of ( ⁇ ) and Eu 3+ ( ⁇ ).
  • the matrix material is sodium tetrafluorocarbonate (NaYF 4 ).
  • the first transparent film 10 and the second transparent film 20 respectively comprise a polyethylene terephthalate (PET) film, a polyimide (PI) film, and a triacetic acid.
  • PET polyethylene terephthalate
  • PI polyimide
  • a triacetic acid e.g., 1,3-bis(tri-Acetyl Cellulose) film
  • TAC Tri-Acetyl Cellulose
  • COP Cycloolefin polymer
  • the first transparent film 10 and the second transparent film 20 may be respectively A composite film of a single layer film or a multilayer film.
  • the first transparent film 10 and the second transparent film 20 are formed by a hot pressing or thermoplastic process.
  • the material of the adhesive layer 30 comprises a pressure sensitive adhesive (PSA).
  • PSA pressure sensitive adhesive
  • the blue-up conversion luminescent material is mixed with the resin and solidified on at least one of the first spacing position and the second spacing position to form a blue light
  • the luminescent material layer 40 is converted (as shown in Figures 4 and 5).
  • the resin is an epoxy resin.
  • the blue light up-converting luminescent material layer 40 when the blue light up-converting luminescent material layer 40 is disposed at a second spaced position between the first transparent film 10 and the second transparent film 20, due to the adhesion of the resin, the blue up-converting luminescent material layer 40 also functions to bond the first transparent film 10 and the second transparent film 20.
  • the first transparent film 10 and the second transparent film 20 may be integrated.
  • a first embodiment of a blue compensation film 50 of the present invention in this embodiment, the second transparent film 20 is doped with a blue up-converting luminescent material.
  • the first transparent film 10 is doped with a blue up-conversion luminescent material.
  • a third embodiment of the blue compensation film 50 of the present invention in this embodiment, the adhesive layer 30 is doped with a blue up-converting luminescent material.
  • FIG. 4 it is a fourth embodiment of the blue compensation film 50 of the present invention.
  • a second spacing position between the first transparent film 10 and the second transparent film 20 is set.
  • a fifth embodiment of the blue compensation film 50 of the present invention is provided in the first spaced position between the adhesive layer 30 and the first transparent film 10 in this embodiment.
  • the luminescent material layer 40 is upconverted by the blue light.
  • the blue compensation film utilizes a blue-up conversion luminescent material to absorb long-wavelength light having a wavelength greater than a blue wavelength and excites a short-wavelength blue light, thereby effectively improving the color shift condition of the white OLED device due to the short life of the blue electroluminescent material.
  • the blue light compensation of the white OLED device is realized, which solves the problem that the traditional OLED display device is prone to yellowish color.
  • the present invention further provides an OLED display device, including an OLED light emitting device 60, and a blue compensation film 50 disposed on a light emitting side of the OLED light emitting device 60.
  • the structure of the blue compensation film 50 is as described above.
  • the blue compensation film 50 is attached to the light exiting side of the OLED light emitting device 60 through its adhesive layer 30.
  • the light emitted by the OLED light emitting device 60 is white light
  • the light emitting material of the OLED light emitting device 60 includes a red electroluminescent material, a green electroluminescent material, and a blue electroluminescent material
  • the OLED light emitting device The white light emitted by 60 is a mixture of red light emitted by a red electroluminescent material, green light emitted by a green electroluminescent material, and blue light emitted by a blue electroluminescent material.
  • the OLED display device further includes any one of the blue compensation film 50 A color filter is provided with the white light emitted from the OLED light emitting device 60 to realize color display.
  • the above OLED display device comprises a blue light compensation film, which can effectively improve the color shift condition caused by the short life of the blue electroluminescent material in the white light OLED device, realize the blue light compensation of the white light OLED device, and solve the problem that the traditional OLED display device is easy to appear.
  • the problem is yellow, so there will be no color shift problem and the display quality is good.
  • the present invention provides a blue compensation film and an OLED display device.
  • the blue-light compensation film of the invention utilizes the blue-up conversion luminescent material to absorb the long-wavelength light having a wavelength greater than the blue-light wavelength and excites the blue light of the short-wavelength, thereby effectively improving the color of the white-light OLED device caused by the short life of the blue electroluminescent material.
  • the partial condition realizes the blue light compensation of the white OLED device, which solves the problem that the traditional OLED display device is prone to yellowish color.
  • the OLED display device of the present invention comprises the above-mentioned blue light compensation film, which does not cause color shift problem and has good display quality.

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Abstract

一种蓝光补偿膜（50）与OLED显示装置。蓝光补偿膜（50）利用蓝光上转换发光材料吸收波长大于蓝光波长的长波长光并激发出短波长的蓝光的性质，有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，实现白光OLED器件的蓝光补偿，解决了传统的OLED显示装置容易出现色偏偏黄的问题。OLED显示装置，含有蓝光补偿膜（50），不会出现色偏问题，显示品质好。

Description

蓝光补偿膜与OLED显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种蓝光补偿膜与OLED显示装置。
背景技术
自1987年柯达公司成功研制出薄膜型有机发光器件以来，有机电致发光器件(Organic Light-Emitting Diode，OLED)的发展就一直备受关注。经过了近30年来发展，目前OLED技术在照明、显示等领域都有着十分重要的应用，OLED显示器，也称为有机电致发光显示器，是一种新兴的平板显示装置，由于其具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽，可实现柔性显示与大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED按照驱动方式可以分为无源矩阵型OLED(Passive Matrix OLED，PMOLED)和有源矩阵型OLED(Active Matrix OLED，AMOLED)两大类，即直接寻址和薄膜晶体管矩阵寻址两类。其中，AMOLED具有呈阵列式排布的像素，属于主动显示类型，发光效能高，通常用作高清晰度的大尺寸显示装置。
OLED通常包括：基板、设于基板上的阳极、设于阳极上的空穴注入层、设于空穴注入层上的空穴传输层、设于空穴传输层上的发光层、设于发光层上的电子传输层、设于电子传输层上的电子注入层及设于电子注入层上的阴极。OLED显示器件的发光原理为半导体材料和有机发光材料在电场驱动下，通过载流子注入和复合导致发光。具体的，OLED显示器件通常采用ITO像素电极和金属电极分别作为器件的阳极和阴极，在一定电压驱动下，电子和空穴分别从阴极和阳极注入到电子传输层和空穴传输层，电子和空穴分别经过电子传输层和空穴传输层迁移到发光层，并在发光层中相遇，形成激子并使发光分子激发，后者经过辐射弛豫而发出可见光。
目前在显示面板领域，OLED的主要应用模式是红(R)、绿(G)、蓝(B)三色电致发光材料的整面蒸镀，共同组成白光OLED(WOLED)，搭配彩色滤光片(Colour filter)实现彩色显示，以上模式的技术已经有个别面板厂实现量产。
上述WOLED搭配Colour Filter实现彩色显示的面板技术，其本质上还 是有机电致发光器件，白光由R、G、B各材料电致发光搭配混合形成，目前该技术领域所面临的主要问题是受到蓝光材料发光寿命的影响，导致发光器件在使用一段时间后出现色偏偏黄的问题。
发明内容
本发明的目的在于提供一种蓝光补偿膜，能够有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，解决了传统的OLED显示装置容易出现色偏偏黄的问题。
本发明的目的还在于提供一种OLED显示装置，含有上述蓝光补偿膜，不会出现色偏问题，显示品质好。
为实现上述目的，本发明提供一种蓝光补偿膜，包括从下到上依次叠层设置的粘着剂层、第一透明薄膜、及第二透明薄膜；
所述蓝光补偿膜满足以下两个条件中的至少一个：
条件1：所述粘着剂层、第一透明薄膜、及第二透明薄膜中的至少一层中掺杂有蓝光上转换发光材料；
条件2：所述粘着剂层与所述第一透明薄膜之间的第一间隔位置、以及所述第一透明薄膜与所述第二透明薄膜之间的第二间隔位置中的至少一个上设有蓝光上转换发光材料；
所述蓝光上转换发光材料包括基于三重态-三重态湮灭的上转换有机发光材料与掺杂有稀土离子的基质材料中的至少一种；所述蓝光上转换发光材料能够吸收大于蓝光波长的光并将其转换为蓝光。
所述蓝光上转换发光材料选择性吸收波长大于630nm的光，并将其转换为波长为460nm～490nm的蓝光。
所述基于三重态-三重态湮灭的上转换有机发光材料包括联吡啶钌与9，10-二苯基蒽的组合、以及四苯基苯并卟啉铂与苝的组合中的至少一个；
所述联吡啶钌的结构式为
Figure PCTCN2016110905-appb-000001
所述9，10-二苯基蒽的结构式为
Figure PCTCN2016110905-appb-000002
所述四苯基苯并卟啉铂的结构式为
Figure PCTCN2016110905-appb-000003
所述苝的结构式为
Figure PCTCN2016110905-appb-000004
所述掺杂有稀土离子的基质材料中，所述基质材料包括卤化物、氧化物、卤氧化物、含硫化合物、及硫氧化物中的至少一种；所述稀土离子包括Er3+、Tm3+、Dy3+、Tb3+、Ho3+、及Eu3+中的至少一种。
所述第一透明薄膜与第二透明薄膜分别包括聚对苯二甲酸乙二醇酯膜、聚酰亚胺膜、三醋酸纤维素膜、及环烯烃聚合物膜中的一种或几种；所述第一透明薄膜与第二透明薄膜分别为单层膜或者多层膜的复合膜。
所述粘着剂层的材料包括压敏胶。
所述条件2中，所述蓝光上转换发光材料与树脂混合在一起并固化在所述第一间隔位置与第二间隔位置中的至少一个上，形成蓝光上转换发光材料层。
所述第一透明薄膜与所述第二透明薄膜之间未设置蓝光上转换发光材料，所述第一透明薄膜与所述第二透明薄膜为一个整体的单一透明薄膜。
本发明还提供一种OLED显示装置，包括OLED发光器件、以及设于所述OLED发光器件的出光侧的蓝光补偿膜，所述蓝光补偿膜为如上所述的蓝光补偿膜，所述蓝光补偿膜通过其粘着剂层附着于所述OLED发光器件的出光侧。
所述OLED发光器件发出的光为白光，所述OLED发光器件的发光材料包括红色电致发光材料、绿色电致发光材料、及蓝色电致发光材料；所述OLED发光器件发出的白光由红色电致发光材料发出的红光、绿色电致发光材料发出的绿光、及蓝色电致发光材料发出的蓝光混合而成。
本发明还提供一种蓝光补偿膜，包括从下到上依次叠层设置的粘着剂层、第一透明薄膜、及第二透明薄膜；
所述蓝光补偿膜满足以下两个条件中的至少一个：
条件1：所述粘着剂层、第一透明薄膜、及第二透明薄膜中的至少一层 中掺杂有蓝光上转换发光材料；
条件2：所述粘着剂层与所述第一透明薄膜之间的第一间隔位置、以及所述第一透明薄膜与所述第二透明薄膜之间的第二间隔位置中的至少一个上设有蓝光上转换发光材料；
所述蓝光上转换发光材料包括基于三重态-三重态湮灭的上转换有机发光材料与掺杂有稀土离子的基质材料中的至少一种；所述蓝光上转换发光材料能够吸收大于蓝光波长的光并将其转换为蓝光；
其中，所述蓝光上转换发光材料选择性吸收波长大于630nm的光，并将其转换为波长为460nm～490nm的蓝光；
其中，所述粘着剂层的材料包括压敏胶。
本发明的有益效果：本发明提供的一种蓝光补偿膜，利用蓝光上转换发光材料吸收波长大于蓝光波长的长波长光并激发出短波长的蓝光的性质，有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，实现白光OLED器件的蓝光补偿，解决了传统的OLED显示装置容易出现色偏偏黄的问题。本发明提供的一种OLED显示装置，含有上述蓝光补偿膜，不会出现色偏问题，显示品质好。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其它有益效果显而易见。
附图中，
图1为本发明的蓝光补偿膜的第一实施例的结构示意图；
图2为本发明的蓝光补偿膜的第二实施例的结构示意图；
图3为本发明的蓝光补偿膜的第三实施例的结构示意图；
图4为本发明的蓝光补偿膜的第四实施例的结构示意图；
图5为本发明的蓝光补偿膜的第五实施例的结构示意图；
图6为本发明的OLED显示装置的结构示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
本发明利用上转换发光材料的性质实现白光OLED器件的蓝光补偿效果，所述上转换发光材料指的是具有反-斯托克斯发光(Anti-Stokes)性质的材料，所述上转换发光材料受到低能量的光激发后发出高能量的光，刚好与斯托克斯发光机理相反，换句话说，就是吸收长波长的频率低的光激发出短波长的频率高的光。比如，吸收红外线激发出可见光，或者吸收红光激发出蓝光与绿光。与传统典型的发光过程(只涉及一个基态和一个激发态)不同，上转换过程需要许多中间态来累积低频的激发光子的能量。
请参阅图1-5，本发明首先提供一种蓝光补偿膜50，包括从下到上依次叠层设置的粘着剂层30、第一透明薄膜10、及第二透明薄膜20；
所述蓝光补偿膜50满足以下两个条件中的至少一个：
条件1：所述粘着剂层30、第一透明薄膜10、及第二透明薄膜20中的至少一层中掺杂有蓝光上转换发光材料；
条件2：所述粘着剂层30与所述第一透明薄膜10之间的第一间隔位置、以及所述第一透明薄膜10与所述第二透明薄膜20之间的第二间隔位置中的至少一个上设有蓝光上转换发光材料；
所述蓝光上转换发光材料包括基于三重态-三重态湮灭的上转换有机发光材料与掺杂有稀土离子的基质材料中的至少一种；所述蓝光上转换发光材料能够吸收大于蓝光波长的光并将其转换为蓝光。
具体的，所述蓝光上转换发光材料选择性吸收波长大于630nm的光，并将其转换为波长为460nm～490nm的蓝光。
具体的，所述蓝光上转换发光材料为纳米级颗粒，所述纳米级颗粒的粒径范围为20nm～100nm。
具体的，所述基于三重态-三重态湮灭的上转换有机发光材料通常包括给体与受体，给体电子跃迁到受体能级上，两个三重态交互湮灭，产生出新的能级，实现低能量转化为高能量的辐射。
优选的，所述基于三重态-三重态湮灭的上转换有机发光材料包括联吡啶钌与9，10-二苯基蒽(DPA)的组合、以及四苯基苯并卟啉铂与苝(二萘嵌苯)的组合中的至少一个；
所述联吡啶钌的结构式为
Figure PCTCN2016110905-appb-000005
所述9，10-二苯基蒽的结构式为
Figure PCTCN2016110905-appb-000006
所述四苯基苯并卟啉铂的结构式为
Figure PCTCN2016110905-appb-000007
所述苝的结构式为
Figure PCTCN2016110905-appb-000008
具体的，所述联吡啶钌与9，10-二苯基蒽的组合中，所述联吡啶钌为给体，所述9，10-二苯基蒽为受体；
所述四苯基苯并卟啉铂与苝的组合中，所述四苯基苯并卟啉铂为给体，所述苝为受体。
具体的，所述掺杂有稀土离子的基质材料中，所述基质材料包括卤化物、氧化物、卤氧化物、含硫化合物、及硫氧化物中的至少一种；所述卤化物优选为氟化物，所述卤氧化物优选为氟氧化物；所述稀土离子包括Er3+(铒)、Tm3+(铥)、Dy3+(镝)、Tb3+(铽)、Ho3+(钬)、及Eu3+(铕)中的至少一种。最优选的，所述基质材料为四氟钇钠(NaYF4)。
具体的，所述第一透明薄膜10与第二透明薄膜20分别包括聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，简称PET)膜、聚酰亚胺(polyimide，简称PI)膜、三醋酸纤维素(Tri-Acetyl Cellulose，简称TAC)膜、及环烯烃聚合物(Cycloolefin polymer，简称COP)膜中的一种或几种；所述第一透明薄膜10与第二透明薄膜20可以分别为单层膜或者多层膜的复合膜。具体的，所述第一透明薄膜10与第二透明薄膜20通过热压或热塑工艺形成。
优选的，所述粘着剂层30的材料包括压敏胶(PSA)。
具体的，所述条件2中，所述蓝光上转换发光材料与树脂混合在一起并固化在所述第一间隔位置与第二间隔位置中的至少一个上，形成蓝光上 转换发光材料层40(如图4和图5所示)。优选的，所述树脂为环氧树脂。
如图4所示，当所述蓝光上转换发光材料层40设置于所述第一透明薄膜10与所述第二透明薄膜20之间的第二间隔位置时，由于树脂的粘合作用，所述蓝光上转换发光材料层40还起到粘合所述第一透明薄膜10与所述第二透明薄膜20的作用。
具体的，当所述第一透明薄膜10与所述第二透明薄膜20之间未设置蓝光上转换发光材料时，所述第一透明薄膜10与所述第二透明薄膜20可以为一个整体的单一透明薄膜。
如图1所示，为本发明的蓝光补偿膜50的第一实施例，在该实施例中，所述第二透明薄膜20中掺杂有蓝光上转换发光材料。
如图2所示，为本发明的蓝光补偿膜50的第二实施例，在该实施例中，所述第一透明薄膜10中掺杂有蓝光上转换发光材料。
如图3所示，为本发明的蓝光补偿膜50的第三实施例，在该实施例中，所述粘着剂层30中掺杂有蓝光上转换发光材料。
如图4所示，为本发明的蓝光补偿膜50的第四实施例，在该实施例中，所述第一透明薄膜10与所述第二透明薄膜20之间的第二间隔位置上设有蓝光上转换发光材料层40。
如图5所示，为本发明的蓝光补偿膜50的第五实施例，在该实施例中，所述粘着剂层30与所述第一透明薄膜10之间的第一间隔位置上设有蓝光上转换发光材料层40。
上述蓝光补偿膜，利用蓝光上转换发光材料吸收波长大于蓝光波长的长波长光并激发出短波长的蓝光的性质，有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，实现白光OLED器件的蓝光补偿，解决了传统的OLED显示装置容易出现色偏偏黄的问题。
请参阅图6，本发明还提供一种OLED显示装置，包括OLED发光器件60、以及设于所述OLED发光器件60的出光侧的蓝光补偿膜50，所述蓝光补偿膜50的结构如上所述，此处不再赘述，所述蓝光补偿膜50通过其粘着剂层30附着于所述OLED发光器件60的出光侧。
具体的，所述OLED发光器件60发出的光为白光，所述OLED发光器件60的发光材料包括红色电致发光材料、绿色电致发光材料、及蓝色电致发光材料；所述OLED发光器件60发出的白光由红色电致发光材料发出的红光、绿色电致发光材料发出的绿光、及蓝色电致发光材料发出的蓝光混合而成。
具体的，所述OLED显示装置还包括设于所述蓝光补偿膜50任意一侧 的一彩色滤光片，搭配所述OLED发光器件60的白色出射光，从而实现彩色显示。
上述OLED显示装置，含有蓝光补偿膜，能够有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，实现白光OLED器件的蓝光补偿，解决了传统的OLED显示装置容易出现色偏偏黄的问题，因此不会出现色偏问题，显示品质好。
综上所述，本发明提供一种蓝光补偿膜与OLED显示装置。本发明的蓝光补偿膜，利用蓝光上转换发光材料吸收波长大于蓝光波长的长波长光并激发出短波长的蓝光的性质，有效改善白光OLED器件因蓝色电致发光材料寿命短而引起的色偏状况，实现白光OLED器件的蓝光补偿，解决了传统的OLED显示装置容易出现色偏偏黄的问题。本发明的OLED显示装置，含有上述蓝光补偿膜，不会出现色偏问题，显示品质好。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (16)

  1. 一种蓝光补偿膜，包括从下到上依次叠层设置的粘着剂层、第一透明薄膜、及第二透明薄膜；
    所述蓝光补偿膜满足以下两个条件中的至少一个：
    条件1：所述粘着剂层、第一透明薄膜、及第二透明薄膜中的至少一层中掺杂有蓝光上转换发光材料；
    条件2：所述粘着剂层与所述第一透明薄膜之间的第一间隔位置、以及所述第一透明薄膜与所述第二透明薄膜之间的第二间隔位置中的至少一个上设有蓝光上转换发光材料；
    所述蓝光上转换发光材料包括基于三重态-三重态湮灭的上转换有机发光材料与掺杂有稀土离子的基质材料中的至少一种；所述蓝光上转换发光材料能够吸收大于蓝光波长的光并将其转换为蓝光。
  2. 如权利要求1所述的蓝光补偿膜，其中，所述蓝光上转换发光材料选择性吸收波长大于630nm的光，并将其转换为波长为460nm～490nm的蓝光。
  3. 如权利要求1所述的蓝光补偿膜，其中，所述基于三重态-三重态湮灭的上转换有机发光材料包括联吡啶钌与9，10-二苯基蒽的组合、以及四苯基苯并卟啉铂与苝的组合中的至少一个；
    所述联吡啶钌的结构式为
    Figure PCTCN2016110905-appb-100001
    所述9，10-二苯基蒽的结构式为
    Figure PCTCN2016110905-appb-100002
    所述四苯基苯并卟啉铂的结构式为
    Figure PCTCN2016110905-appb-100003
    所述苝的结构式为
    Figure PCTCN2016110905-appb-100004
  4. 如权利要求1所述的蓝光补偿膜，其中，所述掺杂有稀土离子的基质材料中，所述基质材料包括卤化物、氧化物、卤氧化物、含硫化合物、及硫氧化物中的至少一种；所述稀土离子包括Er3+、Tm3+、Dy3+、Tb3+、Ho3+、及Eu3+中的至少一种。
  5. 如权利要求1所述的蓝光补偿膜，其中，所述第一透明薄膜与第二透明薄膜分别包括聚对苯二甲酸乙二醇酯膜、聚酰亚胺膜、三醋酸纤维素膜、及环烯烃聚合物膜中的一种或几种；所述第一透明薄膜与第二透明薄膜分别为单层膜或者多层膜的复合膜。
  6. 如权利要求1所述的蓝光补偿膜，其中，所述粘着剂层的材料包括压敏胶。
  7. 如权利要求1所述的蓝光补偿膜，其中，所述条件2中，所述蓝光上转换发光材料与树脂混合在一起并固化在所述第一间隔位置与第二间隔位置中的至少一个上，形成蓝光上转换发光材料层。
  8. 如权利要求1所述的蓝光补偿膜，其中，所述第一透明薄膜与所述第二透明薄膜之间未设置蓝光上转换发光材料，所述第一透明薄膜与所述第二透明薄膜为一个整体的单一透明薄膜。
  9. 一种OLED显示装置，包括OLED发光器件、以及设于所述OLED发光器件的出光侧的蓝光补偿膜，所述蓝光补偿膜为如权利要求1所述的蓝光补偿膜，所述蓝光补偿膜通过其粘着剂层附着于所述OLED发光器件的出光侧。
  10. 如权利要求9所述的OLED显示装置，其中，所述OLED发光器件发出的光为白光，所述OLED发光器件的发光材料包括红色电致发光材料、绿色电致发光材料、及蓝色电致发光材料；所述OLED发光器件发出的白光由红色电致发光材料发出的红光、绿色电致发光材料发出的绿光、 及蓝色电致发光材料发出的蓝光混合而成。
  11. 一种蓝光补偿膜，包括从下到上依次叠层设置的粘着剂层、第一透明薄膜、及第二透明薄膜；
    所述蓝光补偿膜满足以下两个条件中的至少一个：
    条件1：所述粘着剂层、第一透明薄膜、及第二透明薄膜中的至少一层中掺杂有蓝光上转换发光材料；
    条件2：所述粘着剂层与所述第一透明薄膜之间的第一间隔位置、以及所述第一透明薄膜与所述第二透明薄膜之间的第二间隔位置中的至少一个上设有蓝光上转换发光材料；
    所述蓝光上转换发光材料包括基于三重态-三重态湮灭的上转换有机发光材料与掺杂有稀土离子的基质材料中的至少一种；所述蓝光上转换发光材料能够吸收大于蓝光波长的光并将其转换为蓝光；
    其中，所述蓝光上转换发光材料选择性吸收波长大于630nm的光，并将其转换为波长为460nm～490nm的蓝光；
    其中，所述粘着剂层的材料包括压敏胶。
  12. 如权利要求11所述的蓝光补偿膜，其中，所述基于三重态-三重态湮灭的上转换有机发光材料包括联吡啶钌与9，10-二苯基蒽的组合、以及四苯基苯并卟啉铂与苝的组合中的至少一个；
    所述联吡啶钌的结构式为
    Figure PCTCN2016110905-appb-100005
    所述9，10-二苯基蒽的结构式为
    Figure PCTCN2016110905-appb-100006
    所述四苯基苯并卟啉铂的结构式为
    Figure PCTCN2016110905-appb-100007
    所述苝的结构式为
    Figure PCTCN2016110905-appb-100008
  13. 如权利要求11所述的蓝光补偿膜，其中，所述掺杂有稀土离子的基质材料中，所述基质材料包括卤化物、氧化物、卤氧化物、含硫化合物、及硫氧化物中的至少一种；所述稀土离子包括Er3+、Tm3+、Dy3+、Tb3+、Ho3+、及Eu3+中的至少一种。
  14. 如权利要求11所述的蓝光补偿膜，其中，所述第一透明薄膜与第二透明薄膜分别包括聚对苯二甲酸乙二醇酯膜、聚酰亚胺膜、三醋酸纤维素膜、及环烯烃聚合物膜中的一种或几种；所述第一透明薄膜与第二透明薄膜分别为单层膜或者多层膜的复合膜。
  15. 如权利要求11所述的蓝光补偿膜，其中，所述条件2中，所述蓝光上转换发光材料与树脂混合在一起并固化在所述第一间隔位置与第二间隔位置中的至少一个上，形成蓝光上转换发光材料层。
  16. 如权利要求11所述的蓝光补偿膜，其中，所述第一透明薄膜与所述第二透明薄膜之间未设置蓝光上转换发光材料，所述第一透明薄膜与所述第二透明薄膜为一个整体的单一透明薄膜。
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