WO2022222168A1 - 一种提高量子点使用寿命的扩散板 - Google Patents

一种提高量子点使用寿命的扩散板 Download PDF

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WO2022222168A1
WO2022222168A1 PCT/CN2021/090397 CN2021090397W WO2022222168A1 WO 2022222168 A1 WO2022222168 A1 WO 2022222168A1 CN 2021090397 W CN2021090397 W CN 2021090397W WO 2022222168 A1 WO2022222168 A1 WO 2022222168A1
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layer
quantum dot
surface layer
diffusion plate
service life
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PCT/CN2021/090397
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French (fr)
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张建林
张黎明
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苏州三鑫时代新材料股份有限公司
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0242—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of dispersed particles
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0236—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element
    • G02B5/0247—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place within the volume of the element by means of voids or pores

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  • the invention relates to the field of optoelectronic materials, and more particularly, to a diffusion plate for improving the service life of quantum dots.
  • the light diffusing plate usually uses chemical or physical means to make the physical phenomena of refraction, reflection and scattering occur when the light encounters two media with different refractive indices on the way.
  • Inorganic or organic light diffusing agents are added to the base of the substrate, or the light is adjusted artificially through the array arrangement of the micro-features on the surface of the substrate, so that the light is refracted, reflected, and scattered in different directions, thereby changing the traveling route of the light and realizing the incident The light is sufficiently scattered to produce the effect of optical diffusion.
  • the light diffusion plate is widely used in liquid crystal display, LED lighting and imaging display systems.
  • an excellent light diffuser should not only meet the requirements of high light dispersion, softness, and uniform color temperature, but also how to reduce blue light hazards, improve the color gamut of transmitted light, and realize the Indicators such as more in line with the natural light spectrum are also increasingly prominent.
  • the prior patent discloses a manufacturing process of a quantum dot diffuser plate, a light guide plate process and the obtained light guide plate.
  • the light guide plate is currently widely used in the backlight and lighting industries, but due to its structure and Due to the limitation of optical characteristics, the light guide plate cannot be used in the direct type backlight module and some LED lamps. Therefore, manufacturing a diffusion plate with quantum dots is the key to solving the problem.
  • the existing technology is to provide two layers of high-barrier PET layers on the top and bottom of the quantum dot layer.
  • the quantum dot layer is composed of glue and quantum dots, which can make water and oxygen difficult. Enter the quantum dot layer, but the production cost of the PET layer is high, and the edges on both sides are easy to enter water and oxygen.
  • Another is to place the quantum dots directly in the diffusion plate, and the material of the diffusion plate is PMMA or PS. This kind of diffusion The board material is easy to absorb water and oxygen, resulting in easy destruction of quantum dots.
  • the present invention proposes a diffusion plate for improving the life of quantum dots.
  • the diffusion plate is divided into three layers, including: a first outer surface layer, an intermediate layer, a third Two outer surface layers, the first outer surface layer is a transparent moisture barrier layer, which is mainly designed to solve the intolerance of quantum dots to water.
  • the innovation of the present invention is that the intermediate layer includes quantum dots, nitrogen spheres and skeleton layers. PS, in which the quantum dots are surrounded by nitrogen balls.
  • the diameter of the nitrogen balls is 1-20um
  • the diameter of the quantum dots is 1-5nm
  • PS is a continuum
  • the quantum dots are scattered scattered in the skeleton layer PS body adjacent to the body Between the nitrogen balls, the nitrogen balls can effectively isolate the quantum dots from oxygen, shorten the time for the quantum dots to be oxidized by oxygen, thereby extending the service life of the quantum dots.
  • a diffusion plate for improving the service life of quantum dots comprising: a first outer surface layer, an intermediate layer, and a second outer surface layer, the first outer surface layer is divided into an upper surface and a lower surface, and the intermediate layer It is divided into an upper surface and a lower surface, the second outer surface layer is divided into an upper surface and a lower surface, the upper surface of the intermediate layer is combined with the lower surface of the first outer surface layer, and the lower surface of the intermediate layer is The surface is combined with the upper surface of the second outer surface layer; it is characterized in that: the intermediate layer includes a quantum dot body, a nitrogen gas ball and a framework layer PS6, wherein the quantum dot body is surrounded by a nitrogen gas ball, and the quantum dot body is scattered in the framework layer PS body. between adjacent nitrogen balloons.
  • the PS in the skeleton layer PS6 is a continuum
  • an anti-UV agent an antistatic agent, and a light diffusing agent are added to the first outer surface layer and the second outer surface layer.
  • the nitrogen balloon is 1-20 ⁇ m.
  • porous silica in the first outer surface layer accounts for 1-2% of the total mass of the first outer surface layer
  • the porous silica in the second outer surface layer accounts for 1-2% of the total mass of the second outer surface layer.
  • the nitrogen balls in the middle layer account for 1-2% of the total mass of the middle layer.
  • the diameter of the quantum dot body is 1-5 nm.
  • the first outer surface layer is a transparent moisture barrier layer.
  • the invention has the advantages of simple design, convenient use, integral molding design, convenient overall installation and use, high efficiency, high qualification rate, and low cost.
  • the first outer surface layer is a transparent moisture barrier layer, and the main design solves the problem of quantum dot Intolerance of water, the innovation of the present invention is: the intermediate layer includes quantum dots, nitrogen balls and skeleton layer PS, wherein the quantum dots are surrounded by nitrogen balls. Since the diameter of the nitrogen balls is 1-20um, the quantum dots The diameter is 1-5nm, PS is a continuum, and the quantum dots are scattered between adjacent nitrogen spheres in the PS body of the skeleton layer. The nitrogen spheres can effectively isolate the quantum dots from oxygen and shorten the quantum dots. The time for the body to be oxidized by oxygen, thereby realizing the prolongation of the service life of the quantum dot body.
  • FIG. 1 is a schematic structural diagram of a diffuser plate according to a specific embodiment.
  • FIG. 2 is a schematic structural diagram of an intermediate layer in a specific embodiment.
  • FIG. 1 it is a schematic structural diagram of a diffuser plate in a specific embodiment
  • FIG. 2 it is a structural schematic diagram of an intermediate layer in a specific embodiment.
  • a diffusion plate for improving the service life of quantum dots comprising: a first outer surface layer 1, an intermediate layer 2, and a second outer surface layer 3, wherein the first outer surface layer 1 is divided into an upper surface and a lower surface, so Described intermediate layer 2 is divided into upper surface and lower surface, described second outer surface layer 3 is divided into upper surface and lower surface, the upper surface of described intermediate layer 2 is combined with the lower surface of first outer surface layer 1 , the lower surface of the intermediate layer 2 is combined with the upper surface of the second outer surface layer 3; it is characterized in that: the intermediate layer 2 includes a quantum dot body 4, a nitrogen gas ball 5 and a skeleton layer PS6, wherein the quantum dot body 4 is wrapped around The nitrogen gas balls 5 and the quantum dot bodies 4 are scattered between the adjacent nitrogen gas balls 5 in the body of the skeleton layer PS6.
  • PS in the skeleton layer PS6 is a continuum
  • One or more of an anti-UV agent, an antistatic agent, and a light diffusing agent are added to the first outer surface layer 1 and the second outer surface layer 3 .
  • the nitrogen balloon 5 is 1-20 ⁇ m.
  • the porous silicon oxide accounts for 1-2% of the total mass of the first outer surface layer 1 in the first outer surface layer 1
  • the porous silicon oxide accounts for 1-2% of the total mass of the second outer surface layer 3 in the second outer surface layer 3 . %.
  • the nitrogen balls 5 in the intermediate layer 2 account for 1-2% of the total mass of the intermediate layer 2 .
  • the diameter of the quantum dot body 4 is 1-5 nm.
  • the first outer surface layer 1 is a transparent moisture barrier layer.
  • the first outer surface layer 1 is a transparent moisture barrier layer, mainly designed to solve the problem of quantum dots.
  • the innovation of the present invention is: the intermediate layer includes quantum dot body 4, nitrogen gas ball 5 and skeleton layer PS6, wherein the quantum dot body 4 is surrounded by nitrogen gas ball 5, because the diameter of nitrogen ball 5 is 1 -20um, the diameter of the quantum dot body 4 is 1-5nm, PS is a continuum, the quantum dot body 4 is scattered between the adjacent nitrogen gas balls 5 in the PS6 body of the skeleton layer, and the nitrogen gas ball 5 can effectively disperse the quantum dots
  • the body 4 is isolated from oxygen, which shortens the time for the quantum dot body 4 to be oxidized by oxygen, thereby realizing the prolongation of the service life of the quantum dot body.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
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Abstract

为了进一步提高扩散板内量子点的寿命，本发明提出的一种提高量子点使用寿命的扩散板，该扩散板分为三层，包括：第一外表面层、中间层、第二外表面层，第一外表面层是透明的水份阻隔层，主要设计解决量子点对水的不耐受性，本发明的创新点在于：中间层包括量子点体、氮气球和骨架层PS，其中量子点体周围包裹氮气球，由于氮气球的直径为1-20um，量子点体的直径为1-5nm，PS为连续体，量子点体零星分散在骨架层PS本体中的相邻的氮气球之间，氮气球可以有效的将量子点体和氧气进行隔离，缩短了量子点体被氧气氧化的时间，从而实现了量子点体使用寿命的延长。

Description

一种提高量子点使用寿命的扩散板 技术领域
本发明涉及光电材料领域，较为具体的，涉及一种提高量子点使用寿命的扩散板。
背景技术
光扩散板通常利用化学或物理的手段，使光线在行径途中遇到两个折射率相异的介质时，发生折射、反射与散射的物理现象，通过在具有良好透光性高分子聚合物类基材基础中添加无机或有机光扩散剂、或者通过基材表面的微特征结构的阵列排列人为调整光线、使光线发生不同方向的折射、反射、与散射，从而改变光的行进路线，实现入射光充分散射以此产生光学扩散的效果，光扩散板广泛应用在液晶显示、LED照明及成像显示系统中。
随着显示和照明技术的不断发展，优异的光扩散板不仅要满足光分散度高、柔和、色温均匀等要求，在以LED为光源基础上如何减少蓝光危害、提高透过光色域和实现更加吻合自然光光谱等指标也日益凸显。
在先专利(申请号：201710081687.X)中公开了一种量子点扩散板制成工艺、制导光板工艺以及制得的导光板，导光板目前广泛应用于背光和照明行业，但是由于其结构和光学特性的局限性，导光板不能够应用在直下式背光模组中以及一些LED灯具上，由此，制造一种带有量子点的扩散板是解决问题的关键所在。
然而由于量子点怕水和怕氧气的特点，现有的技术是将量子点层上下各设有两层高阻隔的PET层，量子点层为胶水和量子点合成，可以使得水和氧气不容易进入量子点层，但是PET层的制作成本较高，而且两侧边缘容易进水和氧气，还有一种是将量子点直接置于扩散板内，扩散板的材料为PMMA或者PS，这样的扩散板材料容易吸水和吸收氧气，导致量子点容易被破坏。
发明内容
针对上述情况，为了进一步提高扩散板内量子点的寿命，本发明提出的 一种提高量子点使用寿命的扩散板，该扩散板分为三层，包括：第一外表面层、中间层、第二外表面层，第一外表面层是透明的水份阻隔层，主要设计解决量子点对水的不耐受性，本发明的创新点在于：中间层包括量子点体、氮气球和骨架层PS，其中量子点体周围包裹氮气球，由于氮气球的直径为1-20um，量子点体的直径为1-5nm，PS为连续体，量子点体零星分散在骨架层PS本体中的相邻的氮气球之间，氮气球可以有效的将量子点体和氧气进行隔离，缩短了量子点体被氧气氧化的时间，从而实现了量子点体使用寿命的延长。
一种提高量子点使用寿命的扩散板，其包括：第一外表面层、中间层、第二外表面层，所述的第一外表面层分为上表面和下表面，所述的中间层分为上表面和下表面，所述的第二外表面层分为上表面和下表面，所述的中间层的上表面与第一外表面层的下表面结合，所述的中间层的下表面与第二外表面层的上表面结合；其特征在于：中间层包括量子点体、氮气球和骨架层PS6，其中量子点体周围包裹氮气球，量子点体零星分散在骨架层PS本体中的相邻的氮气球之间。
进一步的，骨架层PS6中的PS为连续体
进一步的，第一外表面层和第二外表面层中添加抗UV剂、抗静电剂、光扩散剂中的一种或多种。
进一步的，氮气球为1-20μm。
进一步的，多孔氧化硅在第一外表面层占第一外表面层总质量的1-2％，多孔氧化硅在第二外表面层占第二外表面层总质量的1-2％。
进一步的，氮气球在中间层占中间层总质量的1-2％。
进一步的，量子点体的直径为1-5nm。
进一步的，第一外表面层是透明的水份阻隔层。
本发明的优点是设计简单，使用方便，整体成型设计，整体安装使用方便，效率高，合格率高，成本也降低，第一外表面层是透明的水份阻隔层，主要设计解决量子点对水的不耐受性，本发明的创新点在于：中间层包括量子点体、氮气球和骨架层PS，其中量子点体周围包裹氮气球，由于氮气球的直径为1-20um，量子点体的直径为1-5nm，PS为连续体，量子点体零星分散在骨架层PS本体中的相邻的氮气球之间，氮气球可以有效的将量子点体和氧 气进行隔离，缩短了量子点体被氧气氧化的时间，从而实现了量子点体使用寿命的延长。
附图说明
图1为具体实施方式的扩散板的结构示意图。
图2为具体实施方式的中间层的结构示意图。
主要元器件说明:
第一外表面层 1
中间层 2
第二外表面层 3
量子点体 4
氮气球 5
骨架层PS 6
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
如图1所示，为具体实施方式的扩散板的结构示意图；如图2所示，为具体实施方式的中间层的结构示意图。
一种提高量子点使用寿命的扩散板，其包括：第一外表面层1、中间层2、第二外表面层3，所述的第一外表面层1分为上表面和下表面，所述的中间层2分为上表面和下表面，所述的第二外表面层3分为上表面和下表面，所述的中间层2的上表面与第一外表面层1的下表面结合，所述的中间层2的下表面与第二外表面层3的上表面结合；其特征在于：中间层2包括量子点体4、氮气球5和骨架层PS6，其中量子点体4周围包裹氮气球5，量子点体4零星分散在骨架层PS6本体中的相邻的氮气球5之间。
所述骨架层PS6中的PS为连续体
所述第一外表面层1和第二外表面层3中添加抗UV剂、抗静电剂、光扩散剂中的一种或多种。
所述氮气球5为1-20μm。
所述多孔氧化硅在第一外表面层1占第一外表面层1总质量的1-2％，多孔氧化硅在第二外表面层3占第二外表面层3总质量的1-2％。
所述氮气球5在中间层2占中间层2总质量的1-2％。
所述量子点体4的直径为1-5nm。
所述第一外表面层1是透明的水份阻隔层。
本发明的优点是设计简单，使用方便，整体成型设计，整体安装使用方便，效率高，合格率高，成本也降低，第一外表面层1是透明的水份阻隔层，主要设计解决量子点对水的不耐受性，本发明的创新点在于：中间层包括量子点体4、氮气球5和骨架层PS6，其中量子点体4周围包裹氮气球5，由于氮气球5的直径为1-20um，量子点体4的直径为1-5nm，PS为连续体，量子点体4零星分散在骨架层PS6本体中的相邻的氮气球5之间，氮气球5可以有效的将量子点体4和氧气进行隔离，缩短了量子点体4被氧气氧化的时间，从而实现了量子点体使用寿命的延长。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (8)

  1. 一种提高量子点使用寿命的扩散板，其包括：第一外表面层(1)、中间层(2)、第二外表面层(3)，所述的第一外表面层(1)分为上表面和下表面，所述的中间层(2)分为上表面和下表面，所述的第二外表面层(3)分为上表面和下表面，所述的中间层(2)的上表面与第一外表面层(1)的下表面结合，所述的中间层(2)的下表面与第二外表面层(3)的上表面结合；其特征在于：中间层(2)包括量子点体(4)、氮气球(5)和骨架层PS(6)，其中量子点体(4)周围包裹氮气球(5)，量子点体(4)零星分散在骨架层PS(6)本体中的相邻的氮气球(5)之间。
  2. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：骨架层PS(6)中的PS为连续体
  3. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：第一外表面层(1)和第二外表面层(3)中添加抗UV剂、抗静电剂、光扩散剂中的一种或多种。
  4. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：氮气球(5)为1-20μm。
  5. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：多孔氧化硅在第一外表面层(1)占第一外表面层(1)总质量的1-2％，多孔氧化硅在第二外表面层(3)占第二外表面层(3)总质量的1-2％。
  6. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：氮气球(5)在中间层(2)占中间层(2)总质量的1-2％。
  7. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：量子点体(4)的直径为1-5nm。
  8. 如权利要求1所述的提高量子点使用寿命的扩散板，其特征在于：第一外表面层(1)是透明的水份阻隔层。
PCT/CN2021/090397 2021-04-22 2021-04-30 一种提高量子点使用寿命的扩散板 WO2022222168A1 (zh)

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TW201940659A (zh) * 2018-03-23 2019-10-16 國立清華大學 高效率光轉換材料
CN108481825A (zh) * 2018-05-22 2018-09-04 惠州市创亿达新材料有限公司 量子点光学功能板及其制备方法
CN214704072U (zh) * 2021-04-22 2021-11-12 苏州三鑫时代新材料股份有限公司 一种提高量子点使用寿命的扩散板

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