WO2018209785A1 - 一种导光板、背光模组及显示设备 - Google Patents

一种导光板、背光模组及显示设备 Download PDF

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Publication number
WO2018209785A1
WO2018209785A1 PCT/CN2017/093255 CN2017093255W WO2018209785A1 WO 2018209785 A1 WO2018209785 A1 WO 2018209785A1 CN 2017093255 W CN2017093255 W CN 2017093255W WO 2018209785 A1 WO2018209785 A1 WO 2018209785A1
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Prior art keywords
light
guide plate
light guide
conversion layer
light conversion
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PCT/CN2017/093255
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English (en)
French (fr)
Inventor
常建宇
李泳锐
萧宇均
张简圣哲
陈黎暄
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US15/556,082 priority Critical patent/US10649129B2/en
Publication of WO2018209785A1 publication Critical patent/WO2018209785A1/zh

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    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • 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
    • G02B6/0065—Manufacturing aspects; Material aspects

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a light guide plate, a backlight module, and a display device.
  • Liquid crystal display has the characteristics of light weight, low power consumption, no radiation, etc. It has occupied the leading position in the field of flat display.
  • liquid crystal display is widely used in high definition digital TV, desktop computer, tablet computer and notebook.
  • electronic devices such as computers, mobile phones, and digital cameras.
  • the liquid crystal display device includes a liquid crystal display panel and a backlight module, and the backlight module is used to provide a light source for the liquid crystal display panel.
  • the backlight module generally includes a light source and a light guide plate. The light emitted by the LED light source enters the light guide plate, and the light is uniformly taken out through the mesh point at the bottom of the light guide plate to provide a light source for the liquid crystal display panel. Usually, a certain number of optical films are placed on the surface of the light guide plate. Used to mask mura or increase brightness.
  • the inventors of the present application found that although the light emitted by the light source in the prior design can greatly increase the brightness of the display after passing through the multilayer optical film, the viewing angle is lost and the color gamut is low, which affects the overall display effect.
  • the technical problem to be solved by the present invention is to provide a light guide plate, a backlight module and a display device, which can make the display device have a larger viewing angle and achieve a better display effect.
  • a technical solution adopted by the present invention is to provide a backlight module, the backlight module includes a light guide plate, the light guide plate includes a light conversion layer, and the light conversion layer is located on the light exit side of the light guide plate.
  • a technical solution adopted by the present invention is to provide a light guide plate, the light guide plate includes a light conversion layer, and the light conversion layer is located on the light exit side of the light guide plate for receiving and converting the first light. Ejecting at least a second type of light.
  • a display device which includes a backlight module, the backlight module includes a light guide plate, and the light guide plate includes a light conversion layer, and the light conversion layer is located.
  • the light exit side of the light guide plate for receiving the first light and converting it to at least the first Two kinds of light are emitted.
  • the invention has the beneficial effects that the light guide plate comprises a light conversion layer, and the light conversion layer can receive the first light and convert it into at least a second type, which is different from the prior art.
  • the light is emitted, which can make the emitted light have better diffusibility and a larger brightness viewing angle, thereby improving the display effect of the display device.
  • FIG. 1 is a schematic structural view of an embodiment of a light guide plate of the present invention
  • FIG. 2 is a comparison diagram of brightness viewing angles of a light guide plate of the present invention and a common light guide plate;
  • FIG. 3 is a schematic structural view of an embodiment of a light guide plate of the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of a backlight module of the present invention.
  • FIG. 5 is a schematic structural view of an embodiment of a display device of the present invention.
  • FIG. 1 is a schematic structural view of an embodiment of a light guide plate according to the present invention.
  • the invention provides a light guide plate for a backlight module.
  • the light guide plate includes a light conversion layer 101, and the light conversion layer 101 is located on the light exiting side of the light guide plate for receiving the first light and converting it into at least the second light.
  • the first light is ultraviolet light or blue light
  • the second light is yellow light, or a mixed light of green light and red light, or a mixed light of blue light, green light, and red light.
  • FIG. 2 is a comparison diagram of brightness viewing angles of the light guide plate of the present invention and a common light guide plate.
  • the process in which the light conversion layer 101 receives the first type of light and converts it into at least the second type of light can actually treat the light conversion layer 101 as a "self-luminous light source", similar to the Langer light source, but the light emitted by the light conversion layer 101 has Better diffusivity and larger brightness viewing angle can improve the display effect of the display device. Further, the light conversion layer 101 has a better light dispersion effect, and can mask the brightness unevenness caused by the dot (dot mura).
  • the backlight module uses the light guide plate, the use of other optical films can be reduced, and the manufacturing process can be simplified. ,save costs.
  • the light conversion layer 101 includes a light conversion material, and the light conversion material is a photoluminescence material, and the emitted light can emit light in an isotropic manner; the light conversion material comprises a quantum dot material and/or Or fluorescent material.
  • Quantum Dot refers to the three-dimensional size of the nanometer Grade of granular material, the quantum dot can enter the excited state when it receives light, and emit light of a specific wavelength (ie, a specific color) when it falls back from the excited state to the ground state.
  • the luminescence spectrum of QD is mainly determined 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, and the utilization of light can be improved.
  • the half-wave width of the emission spectrum of QD is narrow and the temperature stability is good.
  • the use of quantum dot materials as light conversion materials can greatly improve the color gamut, thereby improving the display effect of display devices.
  • the material of the quantum dot may be a II-VI quantum dot material, a III-V quantum dot material and a I-III-VI quantum dot material, or a mixture of different quantum dot materials; wherein, the II-VI group
  • the quantum dot material refers to a compound formed by an element of Group II and an element of Group VI, and the III-V quantum dot material is similar to the Group I-III-VI quantum dot material.
  • the quantum dot material may be ZnCdSe 2, CdSe, CdTe, CuInS 2, in one or more ZnCuInS 3.
  • the size, material, and type of fluorescent material of the quantum dot can be selectively adjusted according to actual needs.
  • the concentration ratio of the quantum dot material to the fluorescent material is 1:100 to 1:1, such as 1:100, 1:70, 1:40, 1:20, 1:5 or 1 :1, etc.
  • the light conversion efficiency of quantum dot materials is higher than that of ordinary fluorescent materials, but the price of quantum dot materials is more expensive than ordinary fluorescent materials. If the whole piece of light conversion film is selected from quantum dot materials, the preparation cost will increase, and After the light conversion efficiency reaches a certain value, even if the amount of the quantum dot material is increased, the final display effect is not greatly affected, resulting in waste of resources; therefore, in this embodiment, the combination of the quantum dot material and the fluorescent material can be used. Guarantee light conversion efficiency and save costs.
  • the light conversion layer 101 includes a light conversion material and scattering particles.
  • the backlight source is generally an ultraviolet light source or a blue light source.
  • the light conversion material needs to include a blue light conversion material, a green light conversion material, and a red light conversion material, and the quantum dot material is taken as an example, respectively, a blue quantum dot material, a green light quantum dot material, and a red light quantum dot material;
  • Three different kinds of quantum dot materials respectively absorb ultraviolet light to convert it into blue light, green light and red light, and the blue light, green light and red light emitted by the light conversion material are isotropic and have better diffusibility. Not only can the brightness angle of view be increased, but the problem of color shift will not occur.
  • the light conversion material only includes a green light conversion material and a red light conversion material, wherein the green light and the red light are emitted by the light conversion material to absorb blue light and are isotropic; however, the blue light It is directly emitted from the light guide plate and has a certain directivity.
  • the white light is mixed and finally mixed, the light direction is unevenly mixed, which causes a problem of color shift.
  • the light conversion layer 101 It also contains scattering particles, which can increase the scattering of blue light and make it diffuse, which can effectively solve the color shift problem.
  • the scattering particles may be any suitable optical material known in the art, such as glass hollow microspheres, polymer microparticles, etc.; the scattering particles have a particle size of 0.5 to 6.5 microns, for example: 0.5 micron, 1.3 micron, 2.7 micron, 4.1. Micron, 5.6 microns, 6.5 microns, etc. Among them, you can choose a material with a higher density to make the scattering particles, so that the scattering particles will sink below and be closer to the light source.
  • the concentration ratio of the light conversion material to the scattering particles is 1:1 to 1:15, for example, 1:1, 1:3, 1:5, 1:8, 1:12, 1:15, etc., by adjusting the light conversion
  • the proportion of the material and the type, proportion and size of the scattering particles increase the degree of blue light scattering and reduce the problem of the large-definition role of the backlight module.
  • the backlight module has a lower ratio by adjusting the concentration ratio of the light-converting material and the scattering particles. Color temperature.
  • the bottom surface of the light guide plate is provided with a mesh point, and the number of the scattering particles and/or the light conversion material at the corresponding mesh point is greater than the number of the corresponding mesh points.
  • the light conversion layer 101 includes a light conversion material, and the concentration of the light conversion material in the light conversion layer 101 is 0.01% to 30%.
  • the concentration may be a mass content or a volume content, and may be formulated according to a material, a density, a particle size of the light conversion material, a material type of the base material, etc., and the concentration in other embodiments may also be a mass content. Or volume content.
  • the concentration of the light conversion material in the light conversion layer 101 can affect the color temperature of the backlight module. As the concentration of the light conversion material increases, the color temperature of the backlight module will decrease, and the color temperature of the backlight module can be reduced to less than 13,000, for example, 13000.
  • the concentration of the light conversion material may be appropriately increased, for example, 0.01%, 0.05%, 0.5%, 5%, 15%, 20%, 25%, 30%, or the like.
  • the thickness of the light conversion layer 101 is 45 to 165 micrometers. As the thickness of the light conversion layer 101 increases, the color temperature of the backlight module is also reduced. Therefore, in order to reduce the color temperature of the backlight module.
  • the thickness of the light conversion layer 101 may be appropriately increased, for example, 45 micrometers, 75 micrometers, 110 micrometers, 130 micrometers, 150 micrometers, 165 micrometers, or the like.
  • FIG. 3 is a schematic structural view of an embodiment of a light guide plate according to the present invention.
  • the light guide plate further includes a protective film layer 302 attached to the side of the light conversion layer 301 away from the light guide plate. Because the light conversion material in the light conversion layer 301 is generally sensitive to moisture and oxygen, It is easy to fail during use, and adding a protective film layer 302 can effectively protect the light conversion layer 301 and prolong the service life.
  • FIG. 4 is a schematic structural diagram of an embodiment of a backlight module of the present invention.
  • the present invention provides a backlight module, which includes a light source and a light guide plate 401 in the above embodiment.
  • a backlight module which includes a light source and a light guide plate 401 in the above embodiment.
  • the light guide plate 401 of the backlight module has a light conversion layer, and the conversion layer can make the light emitted by the conversion layer have better diffusibility and a larger brightness viewing angle, thereby greatly improving the brightness of the backlight module.
  • 120 degrees or more for example: 130 degrees, 140 degrees, 150 degrees, 170 degrees, etc., and can reduce the color temperature of the backlight module to less than 13,000, for example: 13000, 10000, 8000 or 6000, etc., thereby enabling the display device to be widely Perspective effect.
  • the prism sheet and the diffusion sheet may not be placed on the light guide plate of the backlight module, or the diffusion sheet and the prism sheet that converge the light in the horizontal direction may not be disposed.
  • the backlight module 1/ 3 brightness angle of view can reach 120 degrees or more, even 130 degrees; further, you can not place any optical film, under this condition, the backlight module 1/3 brightness angle of view can reach 140 degrees or more, even 150 degrees, greatly improved
  • the viewing angle enhances the viewing experience; it also reduces the use of diaphragms and reduces costs.
  • FIG. 5 is a schematic structural diagram of an embodiment of a display device according to the present invention.
  • the present invention provides a display device, which includes a backlight module 501 and a liquid crystal display panel 502.
  • the structure of the backlight module 501 is the same as that in the above embodiment, and is not described herein again; the structure of the liquid crystal display panel 502 is a conventional structure.
  • the backlight module of the display device has a large light-emitting angle, so that the display device has a larger viewing angle and the display effect is better.
  • the present invention provides a light guide plate including a light conversion layer capable of receiving a first type of light and converting it into at least a second type of light, which can make the emitted light have better Diffusion, large brightness viewing angle, and thus enhance the display effect of the display device.

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  • General Physics & Mathematics (AREA)
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Abstract

一种导光板（401）、背光模组（501）及显示设备。导光板包括光转换层（101、301）。光转换层（101、301）位于导光板（401）的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射。能够使发出的光线具有较好的扩散性、较大的亮度视角，进而提升显示设备的显示效果。

Description

一种导光板、背光模组及显示设备 【技术领域】
本发明涉及液晶显示技术领域，特别是涉及一种导光板、背光模组及显示设备。
【背景技术】
液晶显示器(Liquid Crystal Display，LCD)具有轻薄、功耗低、无辐射等特点，现已占据了平面显示领域的主导地位，目前液晶显示器被广泛应用于高清数字电视、台式电脑、平板电脑、笔记本电脑、手机、数码相机等电子设备中。
液晶显示装置包括液晶显示面板和背光模组，背光模组用于为液晶显示面板提供光源。背光模组中通常包括光源及导光板，LED光源发出的光线进入导光板，通过导光板底部的网点实现光的均匀取出为液晶显示面板提供光源，通常导光板上表面放置一定数量光学膜片，用来遮蔽mura或者增加亮度。本申请的发明人在长期的研发中发现，现有设计中光源发出的光经过多层光学膜片后虽然能够大幅提升显示器亮度，但是视角会损失且色域较低，影响整体的显示效果。
【发明内容】
本发明主要解决的技术问题是提供一种导光板、背光模组及显示设备，能够使显示设备具有较大的视角，达到更好的显示效果。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光模组，该背光模组包括导光板，所述导光板包括光转换层，光转换层位于导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射；光转换层的厚度为45～165微米；光转换层中包含量子点材料和/或荧光材料。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种导光板，该导光板包括光转换层，光转换层位于导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种显示设备，该显示设备包括背光模组，该背光模组包括导光板，该导光板包括光转换层，光转换层位于导光板的出光侧，用于接收第一种光线并将其转换为至少第 二种光线出射。
本发明的有益效果是：区别于现有技术的情况，本发明提供一种导光板，该导光板包括光转换层，该光转换层能够接收第一种光线并将其转换为至少第二种光线出射，能够使发出的光线具有较好的扩散性、较大的亮度视角，进而提升显示设备的显示效果。
【附图说明】
图1是本发明导光板一实施方式的结构示意图；
图2是本发明导光板与普通导光板的亮度视角的对比图；
图3是本发明导光板一实施方式的结构示意图；
图4是本发明背光模组一实施方式的结构示意图；
图5是本发明显示设备一实施方式的结构示意图。
【具体实施方式】
为使本发明的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本发明进一步详细说明。
请参阅图1，图1是本发明导光板一实施方式的结构示意图。本发明提供一种导光板用于背光模组。该导光板包括：光转换层101，光转换层101位于导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射。可选地，第一种光线是紫外光或蓝光，第二种光线是黄光，或绿光和红光的混合光，或蓝光、绿光和红光的混合光。
请参阅图2，图2是本发明导光板与普通导光板的亮度视角的对比图。光转换层101接收第一种光线并将其转换为至少第二种光线出射的过程其实可以把光转换层101发光看作为“自发光光源”，类似于郎伯光源，但其发出的光线具有较好的扩散性、较大的亮度视角，能够提升显示设备的显示效果。进一步地，光转换层101有较佳的光线分散作用，能够遮蔽网点引起的亮度不均匀(dot mura)，当背光模组使用该导光板时，可以减少其他光学膜片的使用，简化制作工艺、节约成本。
可选地，在一实施方式中，光转换层101中包含光转换材料，光转换材料为光致发光材料，能够使发射光以等向性向外出射光线；光转换材料包含量子点材料和/或荧光材料。量子点(Quantum Dot，QD)是指三维尺寸均在纳米量 级的颗粒材料，量子点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，QD的发光光谱主要由QD的粒径大小来控制，因此可以通过改变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，QD的发射光谱半波宽很窄，温度稳定性好。选用量子点材料作为光转换材料能够极大的提高色域，进而提高显示设备的显示效果。
其中，量子点的材质可以是II-VI族量子点材料、III-V族量子点材料和I-III-VI族量子点材料，还可以是不同量子点材料的混合物；其中，II-VI族量子点材料是指第II族的元素与第VI族的元素所形成的化合物，III-V族量子点材料和I-III-VI族量子点材料则同理。具体地，量子点材料可以是ZnCdSe2，CdSe，CdTe，CuInS2，ZnCuInS3中的一种或多种。量子点的尺寸大小、材质、荧光材料的种类等可以根据实际需要选择性调配。
可选地，在一实施方式中，量子点材料与荧光材料的浓度比为1∶100～1∶1，例如1∶100、1∶70、1∶40、1∶20、1∶5或1∶1等，量子点材料的光转换效率比普通荧光材料高，但量子点材料的价格比普通荧光材料贵，如果整片光转换膜全部选用量子点材料，会使得制备成本升高，且在光转换效率达到一定值后，即使再增加量子点材料的量，对最终显示效果影响并不大，造成资源的浪费；因此，该实施方式中，选用量子点材料与荧光材料的组合，既能保证光转换效率，还节约成本。
可选地，在一实施方式中，光转换层101中包含光转换材料和散射粒子。背光光源一般是紫外光源或蓝光光源。当选用紫外光源时，光转换材料中需包含蓝光转换材料、绿光转换材料和红光转换材料，以量子点材料为例，分别为蓝光量子点材料、绿光量子点材料和红光量子点材料；三种不同种量子点材料分别吸收紫外光将其转换为蓝光、绿光和红光，经过光转换材料所发出的蓝光、绿光和红光均具有等向性，具有较佳的扩散性，不仅能够增大亮度视角同时还不会出现色偏的问题。
当选用蓝光光源时，光转换材料中只包含绿光转换材料和红光转换材料，其中，绿光和红光是由光转换材料吸收蓝光经转换所发出的，具有等向性；但是，蓝光是从导光板中直接出射，具有一定的方向性，最后混合形成白光时，光方向混合不均，会产生色偏的问题。为了增加蓝光的散射性，光转换层101 中还包含散射粒子，散射粒子能够增加蓝光的散射，使其光线具有扩散性，能够有效解决色偏问题。
其中，散射粒子可以为本领域已知的任何适当光学材料，例如玻璃空心微珠、聚合物微粒等；散射粒子的粒径为0.5～6.5微米，例如：0.5微米、1.3微米、2.7微米、4.1微米、5.6微米、6.5微米等。其中，可以选择密度较大的材料来做散射粒子，这样散射粒子就会沉在下方，更接近光源。其中，光转换材料与散射粒子的浓度比为1∶1～1∶15，例如1∶1、1∶3、1∶5、1∶8、1∶12、1∶15等，通过调配光转换材料的比例以及散射粒子的种类及比例、大小等，增加蓝光散射程度，减小背光模组大视角色偏的问题，同时通过调节光转换材料与散射粒子的浓度比例使背光模组具有较低的色温。
可选地，在一实施方式中，导光板底面设有网点，散射粒子和/或光转换材料在对应网点处的数量大于对应网点之外的数量。通过调整散射粒子和/或光转换材料在不同位置的密度分布，能够使出光更均匀，“磨平”亮点，进一步提升显示设备的显示效果。
可选地，在一实施方式中，光转换层101中包含光转换材料，光转换材料在光转换层101中的浓度为0.01％～30％。其中，该浓度可以是质量含量也可以是体积含量，具体可根据光转换材料的材质、密度、粒径大小，基体材料的材质种类等进行调配，其他实施方式中的浓度同样也可以是质量含量或体积含量。光转换层101中光转换材料的浓度可以影响背光模组的色温，随着光转换材料的浓度增加，背光模组的色温将降低，能够使背光模组的色温降到13000以下，例如：13000、10000、8000或6000等。因此，为了降低背光模组的色温，可以适当增大光转换材料的浓度，例如：0.01％、0.05％、0.5％、5％、15％、20％、25％、30％等。
可选地，在一实施方式中，光转换层101的厚度为45～165微米，随着光转换层101厚度的增加，背光模组的色温也将降低，因此，为了降低背光模组的色温，可以适当增加光转换层101的厚度，例如：45微米、75微米、110微米、130微米、150微米、165微米等。
请参阅图3，图3是本发明导光板一实施方式的结构示意图。在该实施方式中，导光板还包括一层保护膜层302，保护膜层302贴附于光转换层301远离导光板的一侧。因为光转换层301中光转换材料一般对水汽和氧气较为敏感，在 使用过程中容易失效，增加一层保护膜层302能够有效保护光转换层301，延长使用寿命。
请参阅图4，图4是本发明背光模组一实施方式的结构示意图。本发明提供一种背光模组，该背光模组包括光源和上述实施方式中的导光板401，具体请参见上述实施方式的描述，在此不再赘述。
该背光模组中的导光板401具有一层光转换层，该转换层能够使其发出的光线具有较好的扩散性、较大的亮度视角，进而使背光模组出射亮度视角大大提升，达到120度以上，例如：130度、140度、150度、170度等，同时能够使背光模组的色温降到13000以下，例如：13000、10000、8000或6000等，进而能够使显示设备达到广视角效果。进一步地，为了更好的视角效果，该背光模组的导光板上可以不放置棱镜片和扩散片，或不放置扩散片和水平方向会聚光线的棱镜片，该条件下，背光模组1/3亮度视角可达120度以上，甚至130度；进一步，还可以不放置任何光学膜片，该条件下，背光模组1/3亮度视角可达140度以上，甚至150度，大大提升了可视角，提升观看体验；还能够减少膜片的使用，降低成本。
请参阅图5，图5是本发明显示设备一实施方式的结构示意图。本发明提供一种显示设备，该显示设备包括背光模组501和液晶显示面板502，背光模组501的结构与上述实施例中相同，在此不再赘述；液晶显示面板502的结构选用常规结构。该显示设备的背光模组具有较大的出光角度，进而使该显示设备具有较大的视角，显示效果较好。
综上，本发明提供一种导光板，该导光板包括光转换层，该光转换层能够接收第一种光线并将其转换为至少第二种光线出射，能够使发出的光线具有较好的扩散性、较大的亮度视角，进而提升显示设备的显示效果。
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (16)

  1. 一种背光模组，包括导光板，其中，所述导光板包括光转换层，所述光转换层位于所述导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射；所述光转换层的厚度为45～165微米；所述光转换层中包含量子点材料和/或荧光材料。
  2. 根据权利要求1所述的背光模组，其中，所述量子点材料和/或荧光材料在所述光转换层中的浓度为0.01％～30％。
  3. 根据权利要求1所述的背光模组，其中，所述光转换层中还包含散射粒子；所述量子点材料和/或荧光材料与所述散射粒子的浓度比为1∶1～1∶15。
  4. 根据权利要求3所述的背光模组，其中，所述导光板底面设有网点，所述散射粒子和/或所述量子点材料和/或荧光材料在对应所述网点处的数量大于对应所述网点之外的数量。
  5. 根据权利要求1所述的背光模组，其中，所述量子点材料与所述荧光材料的浓度比为1∶100～1∶1。
  6. 根据权利要求1所述的背光模组，其中，所述导光板还包括保护膜层，所述保护膜层贴附于所述光转换层远离所述导光板的一侧。
  7. 根据权利要求1所述的背光模组，其中，所述背光模组不含棱镜片和扩散片；或不含扩散片和水平方向会聚光线的棱镜片；所述背光模组的发光角度所对应的显示视角大于120度，色温小于13000。
  8. 一种显示设备，包括背光模组，其中，所述背光模组包括导光板，所述导光板包括光转换层，所述光转换层位于所述导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射。
  9. 根据权利要求8所述的显示设备，其中，所述背光模组不含棱镜片和扩散片；或不含扩散片和水平方向会聚光线的棱镜片；所述背光模组的发光角度所对应的显示视角大于120度，色温小于13000。
  10. 一种导光板，其中，包括：光转换层，所述光转换层位于所述导光板的出光侧，用于接收第一种光线并将其转换为至少第二种光线出射。
  11. 根据权利要求10所述的导光板，其中，所述光转换层中包含光转换材料，所述光转换材料在所述光转换层中的浓度为0.01％～30％。
  12. 根据权利要求10所述的导光板，其中，所述光转换层中包含光转换材料 和散射粒子；所述光转换材料与所述散射粒子的浓度比为1∶1～1∶15。
  13. 根据权利要求10所述的导光板，其中，所述导光板底面设有网点，所述散射粒子和/或所述光转换材料在对应所述网点处的数量大于对应所述网点之外的数量。
  14. 根据权利要求10所述的导光板，其中，所述光转换层中包含光转换材料，所述光转换材料包含量子点材料和/或荧光材料；所述量子点材料与所述荧光材料的浓度比为1∶100～1∶1。
  15. 根据权利要求10所述的导光板，其中，所述光转换层的厚度为45～165微米。
  16. 根据权利要求10所述的导光板，其中，所述导光板进一步包括：保护膜层，所述保护膜层贴附于所述光转换层远离所述导光板的一侧。
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