WO2019161596A1 - 一种光学膜片、背光模组及显示装置 - Google Patents

一种光学膜片、背光模组及显示装置 Download PDF

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WO2019161596A1
WO2019161596A1 PCT/CN2018/082147 CN2018082147W WO2019161596A1 WO 2019161596 A1 WO2019161596 A1 WO 2019161596A1 CN 2018082147 W CN2018082147 W CN 2018082147W WO 2019161596 A1 WO2019161596 A1 WO 2019161596A1
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optical film
multilayer structure
quantum dot
filled
backlight module
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PCT/CN2018/082147
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English (en)
French (fr)
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常建宇
李泳锐
萧宇均
张简圣哲
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惠州市华星光电技术有限公司
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Priority to US16/112,186 priority Critical patent/US10775550B2/en
Publication of WO2019161596A1 publication Critical patent/WO2019161596A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/08—Refractors for light sources producing an asymmetric light distribution
    • 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
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape

Definitions

  • the present invention relates to the field of display technologies, and in particular, to an optical film, a backlight module, and a display device.
  • the backlight module is mainly composed of a light source, a light guide plate, an optical film, a plastic frame, etc., and is often used to provide a reliable light source for a display panel because of its high brightness, long life, and uniform illumination.
  • the backlight module can be divided into a side-lit backlight module and a direct-lit backlight module, and its main function is to provide a backlight with high luminance and uniform brightness distribution to the display device. Therefore, whether the optical components of the backlight module can be lighter and thinner, the light source can be more uniform and has high luminance, and at the same time meet the requirements of energy saving, has become the focus of research and development.
  • the light beams of different colors have different refractive indexes, if the light angles of the various colors emitted by the backlight module are concentrated, the color difference and chromaticity of each viewing angle of the display device will be inconsistent, so that the imaging quality of the display device will be large. Affected.
  • the technical problem to be solved by the embodiments of the present invention is to provide an optical film, a backlight module, and a display device, which can ensure that the backlight emitted by the backlight module is uniform and includes various angles, so that the color difference and the chromaticity of the viewing angle of the display device are consistent. Thereby improving the image quality of the display device.
  • an embodiment of the present invention provides an optical film disposed above a light guide plate, the optical film is made of a quantum dot material, and the interior of the optical film is filled with A diffusing particle that is incident on the incident light uniformly toward each angle.
  • the optical film has a single layer structure.
  • the optical film has a multilayer structure.
  • At least one of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles.
  • each of the optical films of the multilayer structure when the inside of each of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles, each of the optical films of the multilayer structure
  • the density of a layer of filled diffusion particles gradually decreases from the bottom layer on the side of the light guide plate toward the top layer in a direction away from the light guide plate.
  • the underlayer in the optical film of the multilayer structure is made of a red light quantum dot material
  • the top layer of the optical film of the multilayer structure is made of a green light quantum dot material
  • the embodiment of the present invention further provides a backlight module, including an optical film, the optical film is disposed above the light guide plate, wherein the optical film is made of a quantum dot material, and The inside of the optical film is filled with diffusing particles for uniformly emitting incident light toward each angle.
  • the optical film has a single layer structure.
  • the optical film has a multilayer structure.
  • At least one of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles.
  • each of the optical films of the multilayer structure when the inside of each of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles, each of the optical films of the multilayer structure
  • the density of a layer of filled diffusion particles gradually decreases from the bottom layer on the side of the light guide plate toward the top layer in a direction away from the light guide plate.
  • the underlayer in the optical film of the multilayer structure is made of a red light quantum dot material
  • the top layer of the optical film of the multilayer structure is made of a green light quantum dot material
  • the embodiment of the present invention further provides a display device, including a backlight module, the backlight module includes an optical film, and the optical film is disposed above the light guide plate; wherein the optical film is The quantum dot material is fabricated, and the inside of the optical film is filled with diffusing particles for uniformly emitting incident light toward respective angles.
  • the optical film has a single layer structure.
  • the optical film has a multilayer structure.
  • At least one of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles.
  • each of the optical films of the multilayer structure when the inside of each of the optical films of the multilayer structure is filled with the diffusion particles for uniformly emitting incident light toward respective angles, each of the optical films of the multilayer structure
  • the density of a layer of filled diffusion particles gradually decreases from the bottom layer on the side of the light guide plate toward the top layer in a direction away from the light guide plate.
  • the underlayer in the optical film of the multilayer structure is made of a red light quantum dot material
  • the top layer of the optical film of the multilayer structure is made of a green light quantum dot material
  • the invention utilizes the high conversion rate of light of the quantum dot material and has good scattering performance, so that the quantum dot material can improve the brightness when used as an optical film for the backlight module.
  • the angle of the light exiting can also be increased, and in order to further ensure that the backlight emitted by the backlight module is uniform and includes various angles, the optical film is filled with diffusing particles for uniformly emitting incident light toward various angles, thereby ensuring various viewing angles of the display device.
  • the color difference and chromaticity are consistent, thereby improving the image quality of the display device.
  • Embodiment 1 is a partial cross-sectional structural view of an optical film provided in Embodiment 1 of the present invention.
  • Embodiment 2 is a partial cross-sectional structural view of an optical film provided in Embodiment 2 of the present invention.
  • FIG. 3 is an application scenario diagram of FIG. 2.
  • a Quantum Dot can enter an excited state upon receipt of light and emit light of a specific wavelength (i.e., a specific color) when it is dropped from an excited state to a ground state. Since the luminescence spectrum of QD is mainly controlled by the particle size of QD, the luminescence spectrum can be adjusted by changing the particle size of QD. At the same time, the QD conversion efficiency is high, the utilization of light can be improved, and the emission spectrum of QD is half. The wave width is very narrow, the temperature stability is good, and the light has good scattering performance. Therefore, when the quantum dot material is used as an optical film and used in a backlight module, the brightness can be improved and the light exit angle can be increased.
  • a specific wavelength i.e., a specific color
  • the fabricated optical film is filled with diffusing particles for uniformly emitting incident light toward various angles, thereby improving the image quality of the display device.
  • an optical film proposed by the inventors is disposed above the light guide plate, and the optical film 1 is made of a quantum dot material, and the optical The inside of the diaphragm 1 is filled with diffusing particles 2 for uniformly emitting incident light toward respective angles.
  • the optical film 1 has a single layer structure.
  • the optical film 1 is made of a quantum dot material, and the optical film is formed.
  • the inside of 1 is filled with diffusing particles 2 for uniformly emitting incident light toward respective angles.
  • the optical film has a multilayer structure. Among them, at least one of the optical films 1 of the multilayer structure is filled with diffusing particles 2 for uniformly emitting incident light toward respective angles.
  • each layer in the optical film 1 of the multilayer structure is filled with diffusion particles for uniformly emitting incident light toward various angles. 2.
  • the density of the diffusion particles 2 filled in each layer of the optical film 1 of the multilayer structure is gradually reduced to the top layer in the direction away from the light guide plate from the bottom layer on the side close to the light guide plate, thereby ensuring the light guide plate is emitted.
  • the light is uniform and contains various angles.
  • the green light is easily excited by the red light quantum dot material to emit red light, the proportion of the light color is uneven, resulting in uneven display. Therefore, in order to reduce the secondary absorption of the green light, it is necessary to set the light away from the side of the light guide plate.
  • a film made of a green light quantum dot material so that the underlayer in the multilayer optical film 1 is made of a red light quantum dot material, and the top layer of the multilayer optical film 1 is made of a green light quantum dot material. to make.
  • the optical film 1 has a two-layer structure including a first quantum dot film layer 11 (ie, a bottom layer) and a second quantum dot film disposed above the first quantum dot film layer 11.
  • Layer 12 ie the top layer.
  • the first quantum dot film layer 11 is made of a red light quantum dot material
  • the second quantum dot film layer 12 is made of a green light quantum dot material.
  • the insides of the first quantum dot film layer 11 and the second quantum dot film layer 12 are each filled with the diffusion particles 2 for uniformly emitting the incident light toward the respective angles, and the density of the diffusion particles 2 filled by the first quantum dot film layer 11 > The density of the diffusion particles 2 filled by the second quantum dot film layer 12.
  • the blue light of the light source (not shown) is emitted from the exit surface of the light guide plate toward the first quantum dot film layer 11, and the first quantum dot film layer 11 is excited by the blue light to emit light of the first color, and the first quantum dot film layer
  • the quantum dot material of 11 itself will scatter the first color light converted by the absorption of blue light to various angles, and the diffusion particle 2 can scatter the unabsorbed blue light to make it evenly directed.
  • the quantum dot material (such as the green light quantum dot material) in the second quantum dot film layer 12 can be uniformly absorbed into the blue light in various directions which are not absorbed by the first quantum dot film layer 11, and further uniformly absorbs the blue light.
  • the light of the second color emitted in each direction is converted, and the light of the first color is also scattered by the diffusion particles 2 in the second quantum dot film layer 12, and is uniformly emitted through the second quantum dot film layer 12.
  • the blue light that is not absorbed by the second quantum dot film layer 12 is uniformly emitted from the second quantum dot film layer 12 because it has been scattered by the diffusion particles 2, so that the backlight emitted by the backlight module is uniform and includes various angles. .
  • the inventors further provide a backlight module comprising the optical film of the first and second embodiments of the present invention.
  • the optical film in the third embodiment of the present invention has the same structure and connection relationship as the optical film in the first and second embodiments of the present invention. For details, refer to the related content in the first and second embodiments of the present invention. Repeat them one by one.
  • the inventor further provides a display device, including the backlight module in the third embodiment of the present invention.
  • the backlight module of the fourth embodiment of the present invention has the same structure and the connection relationship with the backlight module of the third embodiment of the present invention. For details, refer to the related content in the third embodiment of the present invention, and details are not described herein again. .
  • the invention utilizes the high conversion rate of light and the good scattering performance of the quantum dot material, so that the quantum dot material can be used as an optical film for the backlight module, thereby improving the brightness and increasing the brightness.
  • the optical film is filled with diffusing particles for uniformly emitting incident light toward various angles, thereby ensuring color difference and color of various viewing angles of the display device. The degree is consistent, thereby improving the imaging quality of the display device.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

本发明提供一种光学膜片，设置于导光板的上方，该光学膜片由量子点材料制作而成，且光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。实施本发明，能够确保背光模组射出的背光均匀且包含各个角度，使得显示装置各视角的色差及色度一致，从而提高了显示装置的成像质量。

Description

一种光学膜片、背光模组及显示装置
本申请要求于2018年2月26日提交中国专利局、申请号为201810158779.8、发明名称为“一种光学膜片、背光模组及显示装置”的中国专利申请的优先权，上述专利的全部内容通过引用结合在本申请中。
技术领域
本发明涉及显示技术领域，尤其涉及一种光学膜片、背光模组及显示装置。
背景技术
背光模组主要由光源、导光板、光学膜片、塑胶框等组成，因具有亮度高，寿命长、发光均匀等特点，所以常用于为显示面板提供可靠光源。一般而言，背光模组可分为侧边式背光模组和直下式背光模组两种，其主要功用在于向显示装置提供高辉度及光亮度均匀分布的背光。因此，背光模组的光学组件能否更轻薄、光源能否更均匀且具有高辉度，并同时符合节能的需求，己成为现今研究发展的重点。
然而，由于不同颜色的光束存在不同的折射率，因此如果背光模组射出的各种颜色的光角度比较集中，则显示装置各视角的色差及色度将不一致，使得显示装置的成像质量将大受影响。
发明内容
本发明实施例所要解决的技术问题在于，提供一种光学膜片、背光模组及显示装置，能够确保背光模组射出的背光均匀且包含各个角度，使得显示装置各视角的色差及色度一致，从而提高了显示装置的成像质量。
为了解决上述技术问题，本发明实施例提供了一种光学膜片，设置于导光板的上方，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部 填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述光学膜片为单层结构。
其中，所述光学膜片为多层结构。
其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述多层结构的光学膜片中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
相应于，本发明实施例还提供了一种背光模组，包括光学膜片，所述光学膜片设置于导光板的上方；其中，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述光学膜片为单层结构。
其中，所述光学膜片为多层结构。
其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述多层结构的光学膜片中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
相应于，本发明实施例又提供了一种显示装置，包括背光模组，所述背 光模组包括光学膜片，所述光学膜片设置于导光板的上方；其中，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述光学膜片为单层结构。
其中，所述光学膜片为多层结构。
其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
其中，所述多层结构的光学膜片中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
本发明实施例具有如下有益效果：本发明利用量子点材料对光的高转换率和有很好的散射性能，使得量子点材料作为光学膜片用于背光模组时，既能提高光亮度，还能增大出光角度，同时为了进一步能够确保背光模组射出的背光均匀且包含各个角度，在光学膜片内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子，从而确保显示装置各视角的色差及色度一致，从而提高了显示装置的成像质量。
附图说明
为了更清楚地说明本发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地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，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。
图1为本发明实施例一中提供的光学膜片的局部剖面结构示意图；
图2为本发明实施例二中提供的光学膜片的局部剖面结构示意图；
图3为图2的应用场景图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述。
发明人发现，量子点(Quantum Dot，QD)在收到光照射时可以进入激发态，并在由激发态回落为基态时发出特定波长(即特定颜色)的光。由于QD的发光光谱主要由QD的粒径大小来控制，可以通过改变QD的粒径来实现发光光谱的调节；同时，QD转换效率很高，可以提高光的利用率，且QD的发射光谱半波宽很窄，温度稳定性好，对光也有很好的散射性能，因此将量子点材料作为光学膜片中并用于背光模组时，既能提高光亮度，还能增大出光角度。当然，考虑到不同颜色的光束存在不同的折射率，为了进一步使得背光模组射出的各种颜色的光均匀且角度分散来确保显示装置各视角的色差及色度一致，有必要在量子点材料制作而成的光学膜片中填充用于将入射光朝向各个角度均匀射出的扩散粒子，从而提高了显示装置的成像质量。
综上，如图1所示，为本发明实施例一中，发明人提出的一种光学膜片，设置于导光板的上方，该光学膜片1由量子点材料制作而成，且该光学膜片1的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子2。该光学膜片1为单层结构。
如图2所示，为本发明实施例二中，发明人提出的另一种光学膜片，设置于导光板的上方，该光学膜片1由量子点材料制作而成，且该光学膜片1的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子2。该光学膜片为多层结构。其中，该多层结构的光学膜片1中至少有一层的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子2。
为了最大化的确保更多的光线经过每一层都能均匀射出，因此在多层结构的光学膜片1中的每一层的内部均填充有用于将入射光朝向各个角度均匀 射出的扩散粒子2，并且多层结构的光学膜片1中的每一层填充的扩散粒子2的密度自靠近导光板一侧的底层起沿远离导光板方向运动逐渐减少至顶层，这样可以确保导光板射出的光就是均匀的且包含各个角度的。
由于绿光容易被红光量子点材料吸收激发发出红光，造成出光颜色的比例不均，从而导致显示不均，因此为了减少绿光被二次吸收，需要在远离导光板出光的一侧设为绿光量子点材料制作的膜层，因此将多层结构的光学膜片1中的底层由红光量子点材料制作而成，将多层结构的光学膜片1中的顶层由绿光量子点材料制作而成。
在一个实施例中，如图3所示，光学膜片1为两层结构，包括第一量子点膜层11(即底层)以及设置于第一量子点膜层11上方的第二量子点膜层12(即顶层)。可以理解的是，第一量子点膜层11由红光量子点材料制作而成，而第二量子点膜层12由绿光量子点材料制作而成。
第一量子点膜层11和第二量子点膜层12的内部均填充有用于将入射光朝向各个角度均匀射出的扩散粒子2，且第一量子点膜层11填充的扩散粒子2的密度>第二量子点膜层12填充的扩散粒子2的密度。
此时，光源(未图示)的蓝光由导光板的出射面射向第一量子点膜层11，第一量子点膜层11被蓝光激发出第一颜色的光，第一量子点膜层11的量子点材料(如红光量子点材料)本身会将吸收蓝光而转化出的第一颜色光线向各个角度散射发出，同时扩散粒子2可以将未被吸收的蓝光进行散射，使其均匀射向第二量子点膜层12。
第二量子点膜层12中的量子点材料(如绿光量子点材料)可以均匀的吸收到由第一量子点膜层11未吸收而散射出来的各个方向的蓝光，并进一步将均匀吸收的蓝光转化成向各个方向射出的第二颜色的光，同时第一颜色的光也经过第二量子点膜层12中的扩散粒子2的散射，均匀的通过第二量子点膜层12射出。同样，没有被第二量子点膜层12吸收的蓝光因为已经过扩散粒子2的散射，所以也是均匀的从第二量子点膜层12射出，这样使得 背光模组射出的背光均匀且包含各个角度。
相应于本发明实施例一和二中的光学膜片，在本发明实施例三中，发明人还提供了一种背光模组，包括本发明实施例一和二中的光学膜片。由于本发明实施例三中的光学膜片与本发明实施例一和二中的光学膜片具有相同的结构及连接关系，具体请参见本发明实施例一和二中的相关内容，在此不再一一赘述。
同理，相应于本发明实施例三中的背光模组，在本发明实施例四中，发明人还提供了一种显示装置，包括本发明实施例三中的背光模组。由于本发明实施例四中的背光模组与本发明实施例三中的背光模组具有相同的结构及连接关系，具体请参见本发明实施例三中的相关内容，在此不再一一赘述。
综上所述，本发明利用量子点材料对光的高转换率和有很好的散射性能，使得量子点材料作为光学膜片用于背光模组时，既能提高光亮度，还能增大出光角度，同时为了进一步能够确保背光模组射出的背光均匀且包含各个角度，在光学膜片内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子，从而确保显示装置各视角的色差及色度一致，从而提高了显示装置的成像质量。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明，不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本发明的保护范围。

Claims (18)

  1. 一种光学膜片，设置于导光板的上方，其中，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
  2. 如权利要求1所述的光学膜片，其中，所述光学膜片为单层结构。
  3. 如权利要求1所述的光学膜片，其中，所述光学膜片为多层结构。
  4. 如权利要求3所述的光学膜片，其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
  5. 如权利要求4所述的光学膜片，其中，所述多层结构的光学膜片中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
  6. 如权利要求5所述的光学膜片，其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
  7. 一种背光模组，其中，包括光学膜片，所述光学膜片设置于导光板的上方；其中，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
  8. 如权利要求7所述的背光模组，其中，所述光学膜片为单层结构。
  9. 如权利要求7所述的背光模组，其中，所述光学膜片为多层结构。
  10. 如权利要求9所述的背光模组，其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
  11. 如权利要求10所述的背光模组，其中，所述多层结构的光学膜片 中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
  12. 如权利要求11所述的背光模组，其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
  13. 一种显示装置，其中，包括背光模组，所述背光模组包括光学膜片，所述光学膜片设置于导光板的上方；其中，所述光学膜片由量子点材料制作而成，且所述光学膜片的内部填充有用于将入射光朝向各个角度均匀射出的扩散粒子。
  14. 如权利要求13所述的显示装置，其中，所述光学膜片为单层结构。
  15. 如权利要求13所述的显示装置，其中，所述光学膜片为多层结构。
  16. 如权利要求15所述的显示装置，其中，所述多层结构的光学膜片中至少有一层的内部填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子。
  17. 如权利要求16所述的显示装置，其中，所述多层结构的光学膜片中的每一层的内部均填充有所述用于将入射光朝向各个角度均匀射出的扩散粒子时，所述多层结构的光学膜片中的每一层填充的扩散粒子的密度自靠近所述导光板一侧的底层起沿远离所述导光板方向运动逐渐减少至顶层。
  18. 如权利要求17所述的显示装置，其中，所述多层结构的光学膜片中的底层由红光量子点材料制作而成，所述多层结构的光学膜片中的顶层由绿光量子点材料制作而成。
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