WO2020124865A1 - Quantum dot polarizer - Google Patents

Quantum dot polarizer Download PDF

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Publication number
WO2020124865A1
WO2020124865A1 PCT/CN2019/081171 CN2019081171W WO2020124865A1 WO 2020124865 A1 WO2020124865 A1 WO 2020124865A1 CN 2019081171 W CN2019081171 W CN 2019081171W WO 2020124865 A1 WO2020124865 A1 WO 2020124865A1
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quantum dot
layer
light
polarizer according
quantum
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PCT/CN2019/081171
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French (fr)
Chinese (zh)
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周淼
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深圳市华星光电技术有限公司
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Publication of WO2020124865A1 publication Critical patent/WO2020124865A1/en

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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
    • 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
    • G02B5/305—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 including organic materials, e.g. polymeric layers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

Definitions

  • the distance between the inner edge of the inorganic encapsulation layer in contact with the quantum dot layer and the long and wide edges of the glass substrate ranges from 0 to 60 microns.
  • the polymer matrix is a resin transparent material
  • the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin and fiber ester One or more of them.
  • the quantum dot includes a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes CdSe, Cd 2 SeTe and One or more of InAs; the green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes CdS, ZnSe, ZnCdS 2 , ZnS, and One or more of ZnO.
  • the present application also provides another kind of quantum dot polarizer, including a quantum dot layer and a polarizing layer disposed on the quantum dot layer; wherein, a low refractive index is further provided between the quantum dot layer and the polarizing layer
  • the low refractive index layer includes a glass substrate and a low refractive index material layer coated on the surface of the glass substrate.
  • the polymer matrix is a resin transparent material
  • the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and fiber ester.
  • the polymer matrix includes one or more of cycloolefin polymer and organosilane resin. Since the cycloolefin polymer and the organosilane-based resin have excellent water-oxygen barrier properties, the quantum dot layer 10 can provide better encapsulation protection for the quantum dots.
  • the quantum dots are oil-soluble quantum dots, and the quantum dots include red light quantum dots and green light quantum dots.
  • the dispersion solvent includes one or more of n-hexane, cyclohexane, and toluene.
  • the method for curing the polymer matrix is thermal curing, light curing, or melt-extrusion cooling and solidification.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Polarising Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

A quantum dot polarizer comprises a quantum dot layer (10) and a polarization layer (30) disposed on the quantum dot layer (10); wherein a low refractive index layer (20) is further disposed between the quantum dot layer (10) and the polarization layer (30). The low refractive index layer (20) comprises a glass substrate (21) and a low refractive index material layer (22) coated on a surface of the glass substrate (21).

Description

一种量子点偏光片Quantum dot polarizer 技术领域Technical field
本申请涉及显示技术领域，尤其涉及一种量子点偏光片。This application relates to the field of display technology, in particular to a quantum dot polarizer.
背景技术Background technique
目前由于量子点材料(Quantum Dot，QD)本身所具有的高色纯度、光谱连续可调等优异性质，使其成为21世纪最为优秀的发光材料，可以在显示色域上大幅度提高现有LCD的色彩表现，因此近年来其显示应用被广泛研究。现有的QD-OC（量子点液晶显示面板）具有视角极大，色域较高的优势。然而，将量子点层直接复合在偏光片表面会造成液晶显示面板的光效变低的现象。因此，需要在量子点层与偏光层之间引入低折层结构来提高液晶显示面板的整体光效。At present, due to its excellent properties such as high color purity and continuously adjustable spectrum, Quantum Dot (QD) itself has become the most excellent luminescent material in the 21st century, which can greatly improve the existing LCD in the display color gamut. Color display, so its display applications have been widely studied in recent years. The existing QD-OC (quantum dot liquid crystal display panel) has the advantages of extremely large viewing angle and high color gamut. However, directly combining the quantum dot layer on the surface of the polarizer will cause the phenomenon of low light efficiency of the liquid crystal display panel. Therefore, a low-reflection layer structure needs to be introduced between the quantum dot layer and the polarizing layer to improve the overall light efficiency of the liquid crystal display panel.
综上所述，现有的量子点偏光片，将量子点层直接复合在偏光片表面，会造成液晶显示面板的光效变低的现象，进一步影响了液晶显示面板的显示效果。In summary, in the existing quantum dot polarizer, the quantum dot layer is directly combined on the surface of the polarizer, which will cause the phenomenon that the light effect of the liquid crystal display panel becomes low, which further affects the display effect of the liquid crystal display panel.
技术问题technical problem
现有的量子点偏光片，将量子点层直接复合在偏光片表面，会造成液晶显示面板的光效变低的现象，进一步影响了液晶显示面板的显示效果。In the existing quantum dot polarizer, the quantum dot layer is directly compounded on the surface of the polarizer, which will cause the phenomenon that the light efficiency of the liquid crystal display panel becomes low, which further affects the display effect of the liquid crystal display panel.
技术解决方案Technical solution
本申请提供一种量子点偏光片，能够提升量子点偏光片的光透性，以解决现有的量子点偏光片，将量子点层直接复合在偏光片表面，会造成液晶显示面板的光效变低的现象，进一步影响了液晶显示面板显示效果的技术问题。This application provides a quantum dot polarizer, which can improve the light transmittance of the quantum dot polarizer, to solve the existing quantum dot polarizer, the quantum dot layer is directly compounded on the surface of the polarizer, which will cause the light effect of the liquid crystal display panel The phenomenon of lowering further affects the technical problems of the display effect of the liquid crystal display panel.
为解决上述问题，本申请提供的技术方案如下：In order to solve the above problems, the technical solutions provided by this application are as follows:
本申请提供一种量子点偏光片，包括量子点层以及设置于所述量子点层上的偏光层；其中，在所述量子点层与所述偏光层之间还设置有低折射率层，所述低折射率层包括玻璃基板以及涂布于所述玻璃基板表面的低折射率材料层，所述低折射率材料层为高温固化树脂。The present application provides a quantum dot polarizer, including a quantum dot layer and a polarizing layer disposed on the quantum dot layer; wherein, a low refractive index layer is further provided between the quantum dot layer and the polarizing layer, The low-refractive index layer includes a glass substrate and a low-refractive index material layer coated on the surface of the glass substrate. The low-refractive index material layer is a high-temperature curing resin.
在本申请实施例所提供的量子点偏光片中，所述量子点偏光片还包括无机封装层，所述无机封装层沉积于所述量子点层外侧。In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot polarizer further includes an inorganic encapsulation layer, and the inorganic encapsulation layer is deposited outside the quantum dot layer.
在本申请实施例所提供的量子点偏光片中，所述无机封装层与所述量子点层接触的内侧边缘与所述玻璃基板的长宽边缘的距离范围在0~60微米之间。In the quantum dot polarizer provided by the embodiment of the present application, the distance between the inner edge of the inorganic encapsulation layer in contact with the quantum dot layer and the long and wide edges of the glass substrate ranges from 0 to 60 microns.
在本申请实施例所提供的量子点偏光片中，所述无机封装层的材质为二氧化硅。In the quantum dot polarizer provided by the embodiment of the present application, the material of the inorganic encapsulation layer is silicon dioxide.
在本申请实施例所提供的量子点偏光片中，所述偏光层的材料为聚乙烯醇。In the quantum dot polarizer provided by the embodiment of the present application, the material of the polarizing layer is polyvinyl alcohol.
在本申请实施例所提供的量子点偏光片中，所述量子点层的材料包括聚合物基质及分散于聚合物基质中的量子点。In the quantum dot polarizer provided by the embodiments of the present application, the material of the quantum dot layer includes a polymer matrix and quantum dots dispersed in the polymer matrix.
在本申请实施例所提供的量子点偏光片中，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。In the quantum dot polarizer provided by the examples of the present application, the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin and fiber ester One or more of them.
在本申请实施例所提供的量子点偏光片中，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot includes a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes CdSe, Cd 2 SeTe and One or more of InAs; the green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes CdS, ZnSe, ZnCdS 2 , ZnS, and One or more of ZnO.
在本申请实施例所提供的量子点偏光片中，所述量子点层包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot layer includes a high-stability composite quantum dot layer structure loaded with hydrogel, MOFs or CdSe-SiO 2 ; The quantum dot layer also includes II-VI A , III-V A quantum dot nanorods with fluorescent polarization properties, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dots material.
本申请还提供另一种量子点偏光片，包括量子点层以及设置于所述量子点层上的偏光层；其中，在所述量子点层与所述偏光层之间还设置有低折射率层，所述低折射率层包括玻璃基板以及涂布于所述玻璃基板表面的低折射率材料层。The present application also provides another kind of quantum dot polarizer, including a quantum dot layer and a polarizing layer disposed on the quantum dot layer; wherein, a low refractive index is further provided between the quantum dot layer and the polarizing layer The low refractive index layer includes a glass substrate and a low refractive index material layer coated on the surface of the glass substrate.
在本申请实施例所提供的量子点偏光片中，所述量子点偏光片还包括无机封装层，所述无机封装层沉积于所述量子点层外侧。In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot polarizer further includes an inorganic encapsulation layer, and the inorganic encapsulation layer is deposited outside the quantum dot layer.
在本申请实施例所提供的量子点偏光片中，所述无机封装层与所述量子点层接触的内侧边缘与所述玻璃基板的长宽边缘的距离范围在0~60微米之间。In the quantum dot polarizer provided by the embodiment of the present application, the distance between the inner edge of the inorganic encapsulation layer in contact with the quantum dot layer and the long and wide edges of the glass substrate ranges from 0 to 60 microns.
在本申请实施例所提供的量子点偏光片中，所述无机封装层的材质为二氧化硅。In the quantum dot polarizer provided by the embodiment of the present application, the material of the inorganic encapsulation layer is silicon dioxide.
在本申请实施例所提供的量子点偏光片中，所述偏光层的材料为聚乙烯醇。In the quantum dot polarizer provided by the embodiment of the present application, the material of the polarizing layer is polyvinyl alcohol.
在本申请实施例所提供的量子点偏光片中，所述量子点层的材料包括聚合物基质及分散于聚合物基质中的量子点。In the quantum dot polarizer provided by the embodiments of the present application, the material of the quantum dot layer includes a polymer matrix and quantum dots dispersed in the polymer matrix.
在本申请实施例所提供的量子点偏光片中，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。In the quantum dot polarizer provided by the examples of the present application, the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin and fiber ester One or more of them.
在本申请实施例所提供的量子点偏光片中，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot includes a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes CdSe, Cd 2 SeTe and One or more of InAs; the green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes CdS, ZnSe, ZnCdS 2 , ZnS, and One or more of ZnO.
在本申请实施例所提供的量子点偏光片中，所述量子点层包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 In the quantum dot polarizer provided by the embodiment of the present application, the quantum dot layer includes a high-stability composite quantum dot layer structure loaded with hydrogel, MOFs or CdSe-SiO 2 ; The quantum dot layer also includes II-VI A , III-V A quantum dot nanorods with fluorescent polarization properties, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dots material.
有益效果Beneficial effect
本申请的有益效果为：本申请提供的量子点偏光片，在量子点层与偏光层之间设置低折射率层，提升了量子点偏光片的光透性，进一步提升了液晶显示器的色域，更进一步提升了液晶显示器的显示效果。The beneficial effects of the present application are: the quantum dot polarizer provided in this application, a low refractive index layer is provided between the quantum dot layer and the polarizing layer, which improves the light transmittance of the quantum dot polarizer and further improves the color gamut of the liquid crystal display , Further improve the display effect of the LCD.
附图说明BRIEF DESCRIPTION
为了更清楚地说明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单介绍，显而易见地，下面描述中的附图仅仅是申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly explain the embodiments or the technical solutions in the prior art, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for applications For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.
图1为本申请量子点偏光片结构示意图。FIG. 1 is a schematic structural diagram of a quantum dot polarizer of the present application.
图2为本申请量子点偏光片另一结构示意图。2 is a schematic diagram of another structure of the quantum dot polarizer of the present application.
本发明的实施方式Embodiments of the invention
本申请针对现有的量子点偏光片，由于将量子点层直接复合在偏光片表面，会造成液晶显示面板的光效变低的现象，进一步影响了液晶显示面板显示效果的技术问题，本实施例能够解决该缺陷。This application is directed to the existing quantum dot polarizers. Since the quantum dot layer is directly compounded on the surface of the polarizer, the light effect of the liquid crystal display panel becomes lower, which further affects the technical problems of the display effect of the liquid crystal display panel. This implementation Examples can solve this defect.
如图1所示，为本申请量子点偏光片结构示意图。其中，本申请提供一种量子点偏光片，包括量子点层10以及设置于所述量子点层10上的偏光层30；其中，在所述量子点层10与所述偏光层30之间还设置有低折射率层20，所述低折射率层20包括涂布于玻璃基板21表面的低折射率材料层22。As shown in Figure 1, it is a schematic diagram of the structure of the quantum dot polarizer of the present application. The present application provides a quantum dot polarizer, including a quantum dot layer 10 and a polarizing layer 30 disposed on the quantum dot layer 10; wherein, between the quantum dot layer 10 and the polarizing layer 30 A low-refractive-index layer 20 is provided. The low-refractive-index layer 20 includes a low-refractive-index material layer 22 coated on the surface of the glass substrate 21.
具体的，所述偏光层30的材料包括聚乙烯醇(Polyvinyl Alcohol，PVA)。Specifically, the material of the polarizing layer 30 includes polyvinyl alcohol (Polyvinyl Alcohol, PVA).
具体的，所述量子点层10的材料包括聚合物基质以及分散于聚合物基质中的量子点。其中，所述聚合物基质不仅可以作为量子点的载体，而且可以对量子点进行封装保护，提升量子点的使用寿命。Specifically, the material of the quantum dot layer 10 includes a polymer matrix and quantum dots dispersed in the polymer matrix. Among them, the polymer matrix can not only be used as a carrier of quantum dots, but also can encapsulate and protect the quantum dots to increase the service life of the quantum dots.
具体的，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。优选的，所述聚合物基质包括环烯烃聚合物与有机硅烷类树脂中的一种或多种。由于环烯烃聚合物与有机硅烷类树脂具有优异的阻隔水氧特性，因此应用于量子点层10中能够对量子点进行较好的封装保护。Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and fiber ester. Preferably, the polymer matrix includes one or more of cycloolefin polymer and organosilane resin. Since the cycloolefin polymer and the organosilane-based resin have excellent water-oxygen barrier properties, the quantum dot layer 10 can provide better encapsulation protection for the quantum dots.
具体的，所述量子点为油溶性量子点，所述量子点包括红光量子点与绿光量子点。Specifically, the quantum dots are oil-soluble quantum dots, and the quantum dots include red light quantum dots and green light quantum dots.
具体的，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 Specifically, the quantum dots include a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes one or more of CdSe, Cd 2 SeTe, and InAs; The green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS 2 , ZnS, and ZnO.
具体的，所述量子点层10包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层10还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 Specifically, the quantum dot layer 10 includes a high-stability composite quantum dot layer structure, and the high-stability composite quantum dot layer structure is loaded with hydrogel, MOFs, or CdSe-SiO 2 ; the quantum dot layer 10 further includes II-VI A , III-V A quantum dot nanorods, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dot materials with fluorescence polarization properties.
具体的，所述低折射率材料层22为高温固化树脂。Specifically, the low-refractive-index material layer 22 is a high-temperature curing resin.
具体的，本申请量子点偏光片的制作方法如下：Specifically, the manufacturing method of the quantum dot polarizer in this application is as follows:
首先，提供一超薄玻璃基板21，所述玻璃基板21耐高温；将高温固化树脂制备的低折射率材料层22涂布于所述玻璃基板21的表面，形成低折射率层20；然后将所述低折射率材料层22与一偏光层30的下表面贴合，将所述低折射率层20的下表面与一量子点层10贴合，形成本申请量子点偏光片。First, provide an ultra-thin glass substrate 21, which is resistant to high temperature; apply a low-refractive-index material layer 22 made of a high-temperature curing resin to the surface of the glass substrate 21 to form a low-refractive-index layer 20; then The low refractive index material layer 22 is bonded to the lower surface of a polarizing layer 30, and the lower surface of the low refractive index layer 20 is bonded to a quantum dot layer 10 to form a quantum dot polarizer of the present application.
具体的，所述量子点层10的制作方法为：在所述玻璃基板21的下表面涂覆包含聚合物基质、量子点及分散溶剂的混合物，去除混合物中的分散溶剂并使所述聚合物基质固化后制得量子点层10。Specifically, the manufacturing method of the quantum dot layer 10 is: coating the lower surface of the glass substrate 21 with a mixture including a polymer matrix, quantum dots, and a dispersion solvent, removing the dispersion solvent in the mixture and allowing the polymer After the matrix is cured, the quantum dot layer 10 is prepared.
具体的，所述分散溶剂为非极性溶剂。优选的，所述分散溶剂包括正戊烷、正己烷、正庚烷、环戊烷、环己烷、二氯甲烷、三氯甲烷、甲苯及石油醚中的一种或几种。更优选的，所述分散溶剂包括正己烷、环己烷、及甲苯中的一种或几种。Specifically, the dispersion solvent is a non-polar solvent. Preferably, the dispersion solvent includes one or more of n-pentane, n-hexane, n-heptane, cyclopentane, cyclohexane, dichloromethane, chloroform, toluene and petroleum ether. More preferably, the dispersion solvent includes one or more of n-hexane, cyclohexane, and toluene.
具体的，使所述聚合物基质固化的方法为热固化、光固化、或者熔融热挤出冷却固化。Specifically, the method of curing the polymer matrix is thermal curing, light curing, or melt-heat extrusion cooling and solidification.
如图2所示，为本申请量子点偏光片另一结构示意图。其中，本申请提供一种量子点偏光片，包括量子点层10以及设置于所述量子点层10上的偏光层30；其中，在所述量子点层10与所述偏光层30之间还设置有低折射率层20，所述低折射率层20包括涂布于玻璃基板21表面的低折射率材料层22。As shown in FIG. 2, it is another schematic structural diagram of the quantum dot polarizer of the present application. The present application provides a quantum dot polarizer, including a quantum dot layer 10 and a polarizing layer 30 disposed on the quantum dot layer 10; wherein, between the quantum dot layer 10 and the polarizing layer 30 A low-refractive-index layer 20 is provided. The low-refractive-index layer 20 includes a low-refractive-index material layer 22 coated on the surface of the glass substrate 21.
具体的，所述量子点偏光片还包括无机封装层40，所述无机封装层40沉积于所述量子点层10外侧；所述无机封装层40与所述量子点层接触的内侧边缘与液晶显示面板的长宽边缘的距离范围在0~60微米之间；所述无机封装层40的材质为二氧化硅。Specifically, the quantum dot polarizer further includes an inorganic encapsulation layer 40 deposited on the outer side of the quantum dot layer 10; the inner edge of the inorganic encapsulation layer 40 in contact with the quantum dot layer and the liquid crystal The distance between the long and wide edges of the display panel ranges from 0 to 60 microns; the material of the inorganic encapsulation layer 40 is silicon dioxide.
具体的，所述偏光层30的材料包括聚乙烯醇(Polyvinyl Alcohol，PVA)。Specifically, the material of the polarizing layer 30 includes polyvinyl alcohol (Polyvinyl Alcohol, PVA).
具体的，所述量子点层10的材料包括聚合物基质以及分散于聚合物基质中的量子点。其中，所述聚合物基质不仅可以作为量子点的载体，而且可以对量子点进行封装保护，提升量子点的使用寿命。Specifically, the material of the quantum dot layer 10 includes a polymer matrix and quantum dots dispersed in the polymer matrix. Among them, the polymer matrix can not only be used as a carrier of quantum dots, but also can encapsulate and protect the quantum dots to increase the service life of the quantum dots.
具体的，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。优选的，所述聚合物基质包括环烯烃聚合物与有机硅烷类树脂中的一种或多种。由于环烯烃聚合物与有机硅烷类树脂具有优异的阻隔水氧特性，因此应用于量子点层10中能够对量子点进行较好的封装保护。Specifically, the polymer matrix is a resin transparent material, and the resin transparent material includes one or more of acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin, and fiber ester. Preferably, the polymer matrix includes one or more of cycloolefin polymer and organosilane resin. Since the cycloolefin polymer and the organosilane-based resin have excellent water-oxygen barrier properties, the quantum dot layer 10 can provide better encapsulation protection for the quantum dots.
具体的，所述量子点为油溶性量子点，所述量子点包括红光量子点与绿光量子点。Specifically, the quantum dots are oil-soluble quantum dots, and the quantum dots include red light quantum dots and green light quantum dots.
具体的，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 Specifically, the quantum dots include a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes one or more of CdSe, Cd 2 SeTe, and InAs; The green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes one or more of CdS, ZnSe, ZnCdS 2 , ZnS, and ZnO.
具体的，所述量子点层10包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层10还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 Specifically, the quantum dot layer 10 includes a high-stability composite quantum dot layer structure, and the high-stability composite quantum dot layer structure is loaded with hydrogel, MOFs, or CdSe-SiO 2 ; the quantum dot layer 10 further includes II-VI A , III-V A quantum dot nanorods, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dot materials with fluorescence polarization properties.
具体的，所述低折射率材料层22为高温固化树脂。Specifically, the low-refractive-index material layer 22 is a high-temperature curing resin.
具体的，本申请量子点偏光片的制作方法如下：Specifically, the manufacturing method of the quantum dot polarizer in this application is as follows:
首先，提供一超薄玻璃基板21，所述玻璃基板21耐高温；将高温固化树脂制备的低折射率材料层22涂布于所述玻璃基板21的表面，形成低折射率层20；然后将所述低折射率材料层22与一偏光层30的下表面贴合；在所述玻璃基板21的下表面涂布量子点层10，所述量子点层10与所述玻璃基板21的长宽边缘的距离范围在0~60微米之间；之后，在所述量子点层10的外围沉积一层无机封装层40，所述无机封装层40的材质为二氧化硅；最终形成本申请量子点偏光片。First, provide an ultra-thin glass substrate 21, which is resistant to high temperature; apply a low-refractive-index material layer 22 made of a high-temperature curing resin to the surface of the glass substrate 21 to form a low-refractive-index layer 20; then The low-refractive-index material layer 22 is bonded to the lower surface of a polarizing layer 30; a quantum dot layer 10 is coated on the lower surface of the glass substrate 21, and the length and width of the quantum dot layer 10 and the glass substrate 21 The distance between the edges ranges from 0 to 60 microns; after that, an inorganic encapsulation layer 40 is deposited on the periphery of the quantum dot layer 10, and the material of the inorganic encapsulation layer 40 is silicon dioxide; the quantum dots of this application are finally formed Polarizer.
具体的，所述量子点层10的制作方法为：在所述玻璃基板21的下表面涂覆包含聚合物基质、量子点及分散溶剂的混合物，去除混合物中的分散溶剂并使所述聚合物基质固化后制得量子点层10。所述分散溶剂为非极性溶剂。优选的，所述分散溶剂包括正戊烷、正己烷、正庚烷、环戊烷、环己烷、二氯甲烷、三氯甲烷、甲苯及石油醚中的一种或几种。更优选的，所述分散溶剂包括正己烷、环己烷、及甲苯中的一种或几种。使所述聚合物基质固化的方法为热固化、光固化、或者熔融热挤出冷却固化。Specifically, the manufacturing method of the quantum dot layer 10 is: coating the lower surface of the glass substrate 21 with a mixture including a polymer matrix, quantum dots, and a dispersion solvent, removing the dispersion solvent in the mixture and allowing the polymer After the matrix is cured, the quantum dot layer 10 is prepared. The dispersion solvent is a non-polar solvent. Preferably, the dispersion solvent includes one or more of n-pentane, n-hexane, n-heptane, cyclopentane, cyclohexane, dichloromethane, chloroform, toluene and petroleum ether. More preferably, the dispersion solvent includes one or more of n-hexane, cyclohexane, and toluene. The method for curing the polymer matrix is thermal curing, light curing, or melt-extrusion cooling and solidification.
本申请的量子点偏光片在所述量子点层10中设置红色发光材料与绿色发光材料，使得本申请的量子点偏光片与蓝色背光配合使用时，所述量子点偏光片中的红色发光材料与绿色发光材料在蓝色背光的激发下发出红光与绿光，所述红光与绿光和未吸收的蓝色背光混合后形成高色纯度的白光射出。The quantum dot polarizer of the present application is provided with a red light emitting material and a green light emitting material in the quantum dot layer 10, so that when the quantum dot polarizer of the present application is used in conjunction with a blue backlight, the red light in the quantum dot polarizer The material and the green light-emitting material emit red light and green light under the excitation of the blue backlight, and the red light is mixed with the green light and the unabsorbed blue backlight to form white light with high color purity to be emitted.
由于量子点本身具备光转换能力，在受到蓝光激发的情况下，发生电子跃迁，而后以荧光辐射的形式完成电子空穴的复合；作为典型的零维纳米材料，量子点在各个方向均具有量子限域范围内的尺寸，因此其荧光辐射不存在方向选择性，受激发后可以360°无差别地辐射荧光，从而能够有效平衡液晶显示器的各视角亮度。Due to the light conversion capability of quantum dots, when excited by blue light, an electronic transition occurs, and then the electron hole recombination is completed in the form of fluorescent radiation; as a typical zero-dimensional nanomaterial, quantum dots have quantum in all directions The size within the limited range, so there is no direction selectivity for its fluorescent radiation, and it can radiate fluorescence in 360 degrees without difference after being excited, which can effectively balance the brightness of each viewing angle of the liquid crystal display.
本申请的有益效果为：本申请提供的量子点偏光片，在量子点层与偏光层之间设置低折射率层，提升了量子点偏光片的光透性，进一步提升了液晶显示器的色域，更进一步提升了液晶显示器的显示效果。The beneficial effects of the present application are: the quantum dot polarizer provided in this application, a low refractive index layer is provided between the quantum dot layer and the polarizing layer, which improves the light transmittance of the quantum dot polarizer and further improves the color gamut of the liquid crystal display , Further improve the display effect of the LCD.
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。In summary, although the present application has been disclosed as preferred embodiments above, the above preferred embodiments are not intended to limit the present application. Those of ordinary skill in the art can make various changes without departing from the spirit and scope of the present application Such changes and retouching, so the scope of protection of this application shall be subject to the scope defined by the claims.

Claims (18)

  1. 一种量子点偏光片，其中，包括量子点层以及设置于所述量子点层上的偏光层；其中，在所述量子点层与所述偏光层之间还设置有低折射率层，所述低折射率层包括玻璃基板以及涂布于所述玻璃基板表面的低折射率材料层，所述低折射率材料层为高温固化树脂。A quantum dot polarizer, which includes a quantum dot layer and a polarizing layer provided on the quantum dot layer; wherein, a low refractive index layer is further provided between the quantum dot layer and the polarizing layer. The low refractive index layer includes a glass substrate and a low refractive index material layer coated on the surface of the glass substrate, the low refractive index material layer is a high temperature curing resin.
  2. 根据权利要求1所述的量子点偏光片，其中，所述量子点偏光片还包括无机封装层，所述无机封装层沉积于所述量子点层外侧。The quantum dot polarizer according to claim 1, wherein the quantum dot polarizer further comprises an inorganic encapsulation layer, and the inorganic encapsulation layer is deposited outside the quantum dot layer.
  3. 根据权利要求2所述的量子点偏光片，其中，所述无机封装层与所述量子点层接触的内侧边缘与所述玻璃基板的长宽边缘的距离范围在0~60微米之间。The quantum dot polarizer according to claim 2, wherein the distance between the inner edge of the inorganic encapsulation layer in contact with the quantum dot layer and the long and wide edge of the glass substrate ranges from 0 to 60 microns.
  4. 根据权利要求2所述的量子点偏光片，其中，所述无机封装层的材质为二氧化硅。The quantum dot polarizer according to claim 2, wherein the material of the inorganic encapsulation layer is silicon dioxide.
  5. 根据权利要求1所述的量子点偏光片，其中，所述偏光层的材料为聚乙烯醇。The quantum dot polarizer according to claim 1, wherein the material of the polarizing layer is polyvinyl alcohol.
  6. 如权利要求1所述的量子点偏光片，其中，所述量子点层的材料包括聚合物基质及分散于聚合物基质中的量子点。The quantum dot polarizer according to claim 1, wherein the material of the quantum dot layer includes a polymer matrix and quantum dots dispersed in the polymer matrix.
  7. 如权利要求6所述的量子点偏光片，其中，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。The quantum dot polarizer according to claim 6, wherein the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin and fiber ester One or more of them.
  8. 如权利要求6所述的量子点偏光片，其中，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 The quantum dot polarizer according to claim 6, wherein the quantum dot includes a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes CdSe, Cd 2 SeTe and One or more of InAs; the green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes CdS, ZnSe, ZnCdS 2 , ZnS, and One or more of ZnO.
  9. 如权利要求6所述的量子点偏光片，其中，所述量子点层包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 The quantum dot polarizer according to claim 6, wherein the quantum dot layer comprises a high-stability composite quantum dot layer structure loaded with hydrogel, MOFs or CdSe-SiO 2 ; The quantum dot layer also includes II-VI A , III-V A quantum dot nanorods with fluorescent polarization properties, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dots material.
  10. 一种量子点偏光片，其中，包括量子点层以及设置于所述量子点层上的偏光层；其中，在所述量子点层与所述偏光层之间还设置有低折射率层，所述低折射率层包括玻璃基板以及涂布于所述玻璃基板表面的低折射率材料层。A quantum dot polarizer, which includes a quantum dot layer and a polarizing layer provided on the quantum dot layer; wherein, a low refractive index layer is further provided between the quantum dot layer and the polarizing layer. The low refractive index layer includes a glass substrate and a low refractive index material layer coated on the surface of the glass substrate.
  11. 根据权利要求10所述的量子点偏光片，其中，所述量子点偏光片还包括无机封装层，所述无机封装层沉积于所述量子点层外侧。The quantum dot polarizer according to claim 10, wherein the quantum dot polarizer further comprises an inorganic encapsulation layer, and the inorganic encapsulation layer is deposited outside the quantum dot layer.
  12. 根据权利要求11所述的量子点偏光片，其中，所述无机封装层与所述量子点层接触的内侧边缘与所述玻璃基板的长宽边缘的距离范围在0~60微米之间。The quantum dot polarizer according to claim 11, wherein the distance between the inner edge of the inorganic encapsulation layer in contact with the quantum dot layer and the long and wide edge of the glass substrate ranges from 0 to 60 microns.
  13. 根据权利要求11所述的量子点偏光片，其中，所述无机封装层的材质为二氧化硅。The quantum dot polarizer according to claim 11, wherein the material of the inorganic encapsulation layer is silicon dioxide.
  14. 根据权利要求10所述的量子点偏光片，其中，所述偏光层的材料为聚乙烯醇。The quantum dot polarizer according to claim 10, wherein the material of the polarizing layer is polyvinyl alcohol.
  15. 如权利要求10所述的量子点偏光片，其中，所述量子点层的材料包括聚合物基质及分散于聚合物基质中的量子点。The quantum dot polarizer according to claim 10, wherein the material of the quantum dot layer includes a polymer matrix and quantum dots dispersed in the polymer matrix.
  16. 如权利要求15所述的量子点偏光片，其中，所述聚合物基质为树脂透明材料，所述树脂透明材料包括丙烯酸系树脂、环氧树脂、环烯烃聚合物、有机硅烷类树脂以及纤维酯中的一种或多种。The quantum dot polarizer according to claim 15, wherein the polymer matrix is a resin transparent material, and the resin transparent material includes acrylic resin, epoxy resin, cycloolefin polymer, organosilane resin and fiber ester One or more of them.
  17. 如权利要求15所述的量子点偏光片，其中，所述量子点包括发光核与包裹于所述发光核外的无机保护壳层，所述发光核的红光材料包括CdSe、Cd 2SeTe及InAs中的一种或多种；所述发光核的绿光材料包括ZnCdSe 2、InP及Cd 2SSe中的一种或多种；所述无机保护壳层包括CdS、ZnSe、ZnCdS 2、ZnS及ZnO中的一种或多种。 The quantum dot polarizer according to claim 15, wherein the quantum dot includes a light-emitting core and an inorganic protective shell wrapped around the light-emitting core, and the red light-emitting material of the light-emitting core includes CdSe, Cd 2 SeTe and One or more of InAs; the green light-emitting material of the light-emitting core includes one or more of ZnCdSe 2 , InP, and Cd 2 SSe; the inorganic protective shell layer includes CdS, ZnSe, ZnCdS 2 , ZnS, and One or more of ZnO.
  18. 如权利要求15所述的量子点偏光片，其中，所述量子点层包括高稳定性复合量子点层结构，所述高稳定性复合量子点层结构装载有水凝胶、MOFs或者CdSe-SiO 2；所述量子点层还包括具有荧光偏振性质的II-VI A、III-V A量子点纳米棒、量子点核壳结构纳米棒、双发射、三发射量子点材料以及钙钛矿量子点材料。 The quantum dot polarizer according to claim 15, wherein the quantum dot layer comprises a high-stability composite quantum dot layer structure loaded with hydrogel, MOFs or CdSe-SiO 2 ; The quantum dot layer also includes II-VI A , III-V A quantum dot nanorods with fluorescent polarization properties, quantum dot core-shell structure nanorods, dual emission, triple emission quantum dot materials and perovskite quantum dots material.
PCT/CN2019/081171 2018-12-17 2019-04-03 Quantum dot polarizer WO2020124865A1 (en)

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