WO2018196176A1 - 裸眼立体显示光栅及制造方法、显示装置 - Google Patents

裸眼立体显示光栅及制造方法、显示装置 Download PDF

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Publication number
WO2018196176A1
WO2018196176A1 PCT/CN2017/093073 CN2017093073W WO2018196176A1 WO 2018196176 A1 WO2018196176 A1 WO 2018196176A1 CN 2017093073 W CN2017093073 W CN 2017093073W WO 2018196176 A1 WO2018196176 A1 WO 2018196176A1
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Prior art keywords
grating
light
metal
oxide layer
metal oxide
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PCT/CN2017/093073
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English (en)
French (fr)
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查国伟
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武汉华星光电技术有限公司
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Priority to US15/553,564 priority Critical patent/US10459239B2/en
Publication of WO2018196176A1 publication Critical patent/WO2018196176A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/30—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving parallax barriers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1847—Manufacturing methods
    • G02B5/1857—Manufacturing methods using exposure or etching means, e.g. holography, photolithography, exposure to electron or ion beams
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a naked eye stereoscopic display grating, a manufacturing method thereof, and a display device.
  • the 3D (3Dimensions) technology is popular because it has got rid of complicated auxiliary equipment, including 3D grating, 3D lens technology and so on.
  • the 3D grating technology has an excellent stereoscopic display effect because it can effectively block image crosstalk between different viewpoints.
  • the conventional rear-mounted grating type naked-eye stereoscopic display comprises an LED, a light guide plate, a diffusion sheet, a brightness enhancement film, a grating layer, an upper and lower polarizer, an LCD panel, etc., and the grating layer is placed between the backlight module and the LCD panel.
  • the naked-eye stereoscopic display technology based on the grating type faces excessive brightness loss.
  • the thickness of the conventional absorption type polarizer is about 100 ⁇ m, which also limits the development trend of thinning of the naked eye stereo technology.
  • the invention provides a naked-eye stereoscopic display grating, a manufacturing method thereof and a display device, which can reflect the light in the reflective region of the metal grating layer back to the backlight system, thereby improving light utilization efficiency and reducing ambient light and panel light reflected by the metal grating layer. Problems such as color crosstalk and reduced contrast.
  • a technical solution adopted by the present invention is to provide a display device, which includes a naked-eye stereoscopic display grating, a liquid crystal display panel, and a backlight module, wherein the naked-eye stereoscopic display grating is placed on Between the visible area of the liquid crystal display panel and the backlight module, the naked-eye stereoscopic display grating comprises: a light-transmissive area and a reflective area periodically arranged, the transparent area comprises a transparent substrate, and the reflective The region includes the transparent substrate and a metal oxide layer and a metal grating layer sequentially deposited on the transparent substrate, wherein a reflectance of the metal oxide layer is less than a reflectivity of the metal grating layer.
  • another technical solution adopted by the present invention is to provide a method for manufacturing a naked-eye stereoscopic display grating, the method comprising: preparing a transparent substrate; depositing a metal oxide layer on the transparent substrate; Depositing a metal grating layer on the metal oxide layer, wherein a reflectance of the metal oxide layer is less than a reflectivity of the metal grating layer; and the metal oxide layer and the metal grating are photolithographically used The layer is etched to expose a portion of the transparent substrate to form a periodically arranged light transmissive region and a reflective region.
  • another technical solution adopted by the present invention is to provide a naked-eye stereoscopic display grating, and the naked-eye stereoscopic display grating includes: a light-transmitting area and a reflective area periodically arranged, and the transparent area
  • the transparent substrate includes the transparent substrate and a metal oxide layer and a metal grating layer sequentially deposited on the transparent substrate, wherein a reflectivity of the metal oxide layer is smaller than that of the metal grating layer Reflectivity.
  • the invention has the beneficial effects that, different from the prior art, the present invention can reflect the light of the reflective region of the metal grating layer back to the backlight system by using a high-reflectivity metal grating layer on the transparent substrate to improve the light. Utilization and reduction of color crosstalk and contrast reduction caused by the reflection of ambient light and panel light by the metal grating layer.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for manufacturing a naked eye stereoscopic display grating according to the present invention
  • FIG. 2 is a schematic structural view of an embodiment of a naked eye stereoscopic display grating of the present invention
  • FIG. 3 is a top plan view showing an embodiment of a naked eye stereoscopic display grating
  • FIG. 4 is a schematic structural view of an embodiment of a display device of the present invention.
  • FIG. 1 is a schematic flowchart of a method for manufacturing a naked-eye stereoscopic display grating according to an embodiment of the present invention. The method includes the following steps:
  • the transparent substrate may be any form of substrate such as glass, polyethylene terephthalate (PET), polymethylMethacrylate (PMMA), PC, ceramic substrate or transparent plastic.
  • PET polyethylene terephthalate
  • PMMA polymethylMethacrylate
  • the glass substrate on the substrate substrate side of the liquid crystal display device can be directly used as a transparent substrate of the naked-eye stereoscopic display grating, which is not specifically limited herein.
  • a metal oxide layer is deposited on the transparent substrate, and the metal oxide layer may be deposited by sputtering or evaporation, which is not specifically limited herein.
  • the metal oxide layer is selected from molybdenum oxide (MoOx), and the reflectance of the metal oxide layer in the visible light band is less than 25%.
  • MoOx molybdenum oxide
  • other metal oxides having a reflectance of less than 25% may also be used, and are not specifically limited herein.
  • a metal grating layer is deposited on the metal oxide layer.
  • the deposition of the metal grating layer may also be performed by sputtering or evaporation.
  • the invention is not limited herein.
  • the metal grating layer may be one of, but not limited to, gold, aluminum, and silver.
  • the metal grating layer has a reflectance greater than 90%, and the visible wavelength range is 390 to 780 nm.
  • the metal oxide layer in the embodiment of the present invention has a lower reflectance than the metal grating layer.
  • the metal oxide layer and the metal grating layer are subjected to photoresist coating, exposure, development, etching of a photoresist mask, and photoresist stripping to expose the transparent substrate.
  • the light-transmissive region and the reflective region are periodically arranged, and the etching of the metal oxide layer and the metal grating layer in this step is performed by one-step photolithography without adding an additional process.
  • the formed light-transmitting region transmits light to provide a light source for the display panel
  • the width of the reflective region is The period of the reflection zone is
  • Wp is the pixel width of the display panel
  • Q is the binocular distance
  • K is the number of viewpoints of the naked eye stereoscopic display, that is, the process parameter of the metal grating depends on the pixel width of the specific display panel, and the user's eyes are closed.
  • the parameters of the metal grating used in the display panel of different pixel widths are different from the displayed number of viewpoints.
  • the naked-eye stereoscopic display grating prepared by the above manufacturing method is applied to a display device.
  • the naked eye stereoscopic display grating is placed between the backlight system and the display panel. Because the naked-eye stereoscopic display grating is divided into a light-transmitting area and a reflective area, the light emitted by the backlight module passes through the light-transmitting area to reach the display panel, and provides a light source for different viewpoint images, and the light emitted by the backlight module reaches the reflective area.
  • the backlight utilization efficiency of the naked-eye stereoscopic display device can be improved, and the brightness enhancement effect can be realized.
  • the light of the reflective portion of the metal grating layer can be reflected back to the backlight system for reuse, thereby improving the utilization efficiency of the light, and also adopting a low reflectivity.
  • the metal oxide layer can reduce the reflected light on the back surface of the metal grating layer, thereby reducing problems such as color crosstalk and contrast reduction caused by the reflection of ambient light and panel light by the metal grating layer.
  • FIG. 2 is a schematic structural view of an embodiment of a naked-eye stereoscopic display grating according to the present invention
  • FIG. 3 is a schematic top view of an embodiment of a naked-eye stereoscopic display grating according to the present invention.
  • FIG. 2 shows the naked-eye stereoscopic display.
  • the grating 10 includes a light-transmitting area A and a reflective area B which are periodically arranged.
  • the transparent area A is used to provide a light source for the display panel through the light, and includes a transparent substrate 11.
  • the transparent substrate 11 may be glass, polyethylene terephthalate (PET), polymethyl. Any form of substrate such as a polymethyl methacrylate (PMMA), a PC, a ceramic substrate or a transparent plastic.
  • PMMA polymethyl methacrylate
  • PC polymethyl methacrylate
  • PC polymethyl methacrylate
  • a glass substrate on the side of the liquid crystal display device array substrate can also be directly used as a transparent substrate of the naked-eye stereoscopic display grating.
  • the present invention is not specifically limited.
  • the reflective region B includes a transparent substrate 11 and a metal oxide layer 12 and a metal grating layer 13 which are sequentially deposited on the transparent substrate 11, wherein the metal oxide layer 12 has a reflectance smaller than that of the metal grating layer 13.
  • the width of the reflective area B is Cycle is
  • Wp is the pixel width of the display panel
  • Q is the binocular distance
  • K is the number of viewpoints of the naked eye stereoscopic display. That is to say, the process parameters of the metal grating depend on the pixel width of the specific display panel, the user's binocular distance and the number of displayed viewpoints, and the parameters of the metal grating used by the display panel of different pixel widths are also different.
  • the metal oxide layer 12 is selected from molybdenum oxide (MoOx) in the visible light band (390 ⁇ ). 780 nm)
  • MoOx molybdenum oxide
  • the metal oxide layer has a reflectance of less than 25%.
  • other metal oxides having a reflectance of less than 25% may also be used, and are not specifically limited herein.
  • the metal grating layer 13 may be one of, but not limited to, gold, aluminum, and silver, and the reflectance of the metal grating layer 13 is greater than 90% in the visible light band.
  • the metal oxide layer 12 of the embodiment of the present invention has a lower reflectivity than the metal grating layer 13.
  • the light of the reflective portion of the metal grating can be reflected back to the backlight system to be reused, thereby improving the utilization efficiency of the light, and also using a metal having a low reflectance.
  • the oxide layer can reduce the reflected light on the back surface of the metal grating layer, thereby reducing problems such as color crosstalk and contrast reduction caused by the reflection of ambient light and panel light by the metal grating layer.
  • FIG. 4 is a schematic structural diagram of an embodiment of a display device according to the present invention.
  • the display device 20 includes the naked eye stereoscopic display grating C, the liquid crystal display panel 21, and the backlight module 22 of any of the above structures.
  • the naked-eye stereoscopic display grating C is placed between the visible area of the liquid crystal display panel 21 and the backlight module 22.
  • the present invention provides a naked-eye stereoscopic display grating, a manufacturing method thereof, and a display device capable of reflecting a reflective portion of a metal grating layer by depositing a high-reflectivity metal grating layer on a transparent substrate.
  • the light is reflected back to the backlight system to re-use the light to improve the utilization efficiency of the light.
  • the metal oxide layer with low reflectivity can be used to reduce the reflected light on the back side of the metal grating layer, thereby reducing the ambient light and the panel light reflected by the metal grating layer. Problems such as color crosstalk and reduced contrast.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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  • Engineering & Computer Science (AREA)
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Abstract

一种裸眼立体显示光栅（10）及制造方法、显示装置（20），方法包括：准备一透明基底（11）；在透明基底（11）上沉积金属氧化物层（12）；在金属氧化物层（12）上沉积金属光栅层（13），其中，金属氧化物层（12）的反射率小于金属光栅层（13）的反射率；采用光刻法对金属氧化物层（12）及金属光栅层（13）进行蚀刻以暴露部分透明基底（11），形成周期性排布的透光区（A）及反光区（B）。通过上述方式，能够提高光线利用率及减少环境及面板光线所引起的颜色串扰及对比度降低等问题。

Description

裸眼立体显示光栅及制造方法、显示装置 【技术领域】
本发明涉及显示技术领域，特别是涉及一种裸眼立体显示光栅及制造方法、显示装置。
【背景技术】
人们对客观环境的感知是通过视觉、听觉、触觉、嗅觉及味觉等获取的，逼真地模拟再现出这些临场感觉，是现代科技的重要研究课题之一。
立体视觉技术，需技术突破，才能实现实用化的应用。裸眼3D(3Dimensions)技术由于摆脱了复杂的辅助设备而大受欢迎，包括3D光栅、3D透镜技术等。其中，3D光栅技术由于能够有效阻绝不同视点之间的图像串扰，具有较优的立体显示效果。传统的后置式光栅式裸眼立体显示器包括LED、导光板、扩散片、增亮膜、光栅层、上下偏光片、LCD面板等，光栅层放置于背光模组与LCD面板之间。背光模组经过增亮膜后部分偏振光得到重复利用，亮度显著增加，但是在经过光栅层后遮光部分仍然会导致亮度损失一半以上，因而基于光栅式的裸眼立体显示技术面临着亮度损失过大的问题，同时由于传统吸收型偏光片的厚度在100μm左右，也限制了裸眼立体技术薄型化的发展趋势。
【发明内容】
本发明提供一种裸眼立体显示光栅及制造方法、显示装置，能够将金属光栅层反光区的光反射回背光系统重新得到利用，提高光线利用率及减少由金属光栅层反射环境光及面板光线所引起的颜色串扰及对比度降低等问题。
为解决上述技术问题，本发明采用的一种技术方案是：提供一种显示装置，所述显示装置包括裸眼立体显示光栅、液晶显示面板及背光模组，其中，所述裸眼立体显示光栅放置于所述液晶显示面板的可视区域及所述背光模组之间，所述裸眼立体显示光栅包括：周期性排布的透光区及反光区，所述透光区包括透明基底，所述反光区包括所述透明基底及依次沉积于所述透明基底上的金属氧化物层和金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率。
为解决上述技术问题，本发明采用的另一种技术方案是：提供一种裸眼立体显示光栅的制造方法，所述方法包括：准备一透明基底；在所述透明基底上沉积金属氧化物层；在所述金属氧化物层上沉积金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率；采用光刻法对所述金属氧化物层及所述金属光栅层进行蚀刻以暴露部分所述透明基板，形成周期性排布的透光区及反光区。
为解决上述技术问题，本发明采用的又一种技术方案是：提供一种裸眼立体显示光栅，所述裸眼立体显示光栅包括：周期性排布的透光区及反光区，所述透光区包括透明基底，所述反光区包括所述透明基底及依次沉积于所述透明基底上的金属氧化物层和金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率。
本发明的有益效果是：区别于现有技术的情况，本发明通过在透明基底上沉积高反射率的金属光栅层，能够将金属光栅层反光区的光反射回背光系统重新得到利用，提高光线利用率及减少由金属光栅层反射环境光及面板光线所引起的颜色串扰及对比度降低等问题。
【附图说明】
图1是本发明裸眼立体显示光栅的制造方法一实施例的流程示意图；
图2是本发明裸眼立体显示光栅一实施方式的结构示意图；
图3是发明裸眼立体显示光栅一实施方式的俯视示意图；
图4是本发明显示装置一实施方式的结构示意图。
【具体实施方式】
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1，图1为本发明裸眼立体显示光栅的制造方法一实施例的流程示意图，该方法包括如下步骤：
S1，准备一透明基底。
其中，所述透明基底可以是玻璃、聚对苯二甲酸乙二酯(Polyethylene terephthalate，PET)、聚甲基丙烯酸甲酯(PolymethylMethacrylate，PMMA)、PC、陶瓷基板或者透明塑料等任意形式的基板，在具体实施例中，还可以直接采用液晶显示装置阵列基板侧的玻璃基底作为该裸眼立体显示光栅的透明基底，此处本发明不做具体限定。
S2，在透明基底上沉积金属氧化物层。
将上述的透明基底洗净后，在该透明基底上沉积金属氧化物层，且该金属氧化物层的沉积可以采用溅射或者蒸发等方式，此处本发明不做具体限定。
在本实施例中，选用金属氧化物层为氧化钼(MoOx)，在可见光波段该金属氧化物层的反射率小于25％。当然，在其它实施例中，也可以为其它反射率小于25％的金属氧化物，此处也不做具体限定。
S3，在金属氧化物层上沉积金属光栅层。
在上述的金属氧化物层上沉积金属光栅层，其中，该金属光栅层的沉积也可以采用溅射或者蒸发等方式，此处本发明不做具体限定。
本实施例中金属光栅层可以为包括但不限于金、铝及银中的一种，在可见光波段中，该金属光栅层的反射率大于90％，且可见波段范围为390～780nm。且就本发明来说，本发明实施例中的金属氧化物层的反射率小于金属光栅层。
S4，采用光刻法对金属氧化物层及所述金属光栅层进行蚀刻以暴露部分透明基板，形成周期性排布的透光区及反光区。
在沉积完金属光栅层后，对上述的金属氧化物层及金属光栅层进行光刻胶涂覆、曝光、显影、光刻胶掩膜板的蚀刻以及光刻胶剥离等工艺，以暴露透明基板，形成周期性排布的透光区及反光区，且该步骤中对金属氧化物层及金属光栅层的刻蚀是通过一步光刻完成，无需增加额外的工艺。
在该步骤中，所形成的透光区透过光线为显示面板提供光源，反光区的宽度为
Figure PCTCN2017093073-appb-000001
反光区的周期为
Figure PCTCN2017093073-appb-000002
其中，Wp为显示面板的像素宽度，Q为双眼瞳距，K为裸眼立体显示的视点数，也即是说该该金属光栅的制程参数依赖于具体的显示面板的像素宽度，用户的双眼瞳距以及显示的视点数，且不同像素宽度的显示面板所采用的金属光栅的参数也不一样。
具体地，将用上述制造方法制备的裸眼立体显示光栅应用于一显示装置中， 将该裸眼立体显示光栅放置于背光系统和显示面板之间。因该该裸眼立体显示光栅分为透光区和反光区，由背光模组发出的光线经过透光区到达显示面板，为不同的视点图像提供光源，背光模组发出的光线到达反光区时会通过金属光栅层面的反射作用重新进入背光系统，并经过导光板背部的反射片重新循环利用，可以提升裸眼立体显示装置的背光利用效率，实现亮度增强效果。
当环境光线及面板中的光线入射到金属光栅背面的低反射金属氧化物层时，其反射明显降低，从而减少由环境光及面板光线所引起的颜色串扰以对比度降低问题。
上述实施方式中，通过在透明基底上沉积高反射率的金属光栅层，能够将金属光栅层反光区部分的光反射回背光系统重新得到利用，提高光线的利用效率，同时还采用反射率低的金属氧化物层，能够降低金属光栅层背面的反射光，从而减少由金属光栅层反射环境光及面板光线所引起的颜色串扰及对比度降低等问题。
请一并参阅图2及图3，图2为本发明裸眼立体显示光栅一实施方式的结构示意图，图3为本发明裸眼立体显示光栅一实施方式的俯视示意图，如图2，该裸眼立体显示光栅10包括：周期性排布的透光区A及反光区B。
其中，透光区A用于透过光线为显示面板提供光源，其包括透明基底11，其中，透明基底11可以为玻璃、聚对苯二甲酸乙二酯(Polyethylene terephthalate，PET)、聚甲基丙烯酸甲酯(PolymethylMethacrylate，PMMA)、PC、陶瓷基板或者透明塑料等任意形式的基板，在具体实施例中，还可以直接采用液晶显示装置阵列基板侧的玻璃基底作为该裸眼立体显示光栅的透明基底，此处本发明不做具体限定。
反光区B，包括透明基底11及依次沉积于透明基底11上的金属氧化物层12和金属光栅层13，其中，金属氧化物层12的反射率小于金属光栅层13的反射率。且反光区B的宽度为
Figure PCTCN2017093073-appb-000003
周期为
Figure PCTCN2017093073-appb-000004
其中，Wp为显示面板的像素宽度，Q为双眼瞳距，K为裸眼立体显示的视点数。也即是说该该金属光栅的制程参数依赖于具体的显示面板的像素宽度，用户的双眼瞳距以及显示的视点数，且不同像素宽度的显示面板所采用的金属光栅的参数也不一样。
本实施例中，选用金属氧化物层12为氧化钼(MoOx)，在可见光波段(390～ 780nm)该金属氧化物层的反射率小于25％。当然，在其它实施例中，也可以为其它反射率小于25％的金属氧化物，此处也不做具体限定
金属光栅层13可以为包括但不限于金、铝及银中的一种，在可见光波段中，该金属光栅层13的反射率大于90％。且就本发明来说，本发明实施例中的金属氧化物层12的反射率小于金属光栅层13。
上述实施方式中，通过在透明基底上沉积高反射率的金属光栅层，能够将金属光栅反光区部分的光反射回背光系统重新得到利用，提高光线的利用效率，同时还采用反射率低的金属氧化物层，能够降低金属光栅层背面的反射光，从而减少由金属光栅层反射环境光及面板光线所引起的颜色串扰及对比度降低等问题。
请参阅图4，图4为本发明显示装置一实施方式的结构示意图，在具体实施方式中，该显示装置20包括上述任意结构的裸眼立体显示光栅C、液晶显示面板21及背光模组22，其中，裸眼立体显示光栅C放置于液晶显示面板21的可视区域及背光模组22之间，具体实施方式详见上文描述，此处不再赘述。
综上所述，本领域技术人员容易理解，本发明提供一种裸眼立体显示光栅及制造方法、显示装置，通过在透明基底上沉积高反射率的金属光栅层，能够将金属光栅层反光区部分的光反射回背光系统重新得到利用，提高光线的利用效率，同时还采用反射率低的金属氧化物层，能够降低金属光栅层背面的反射光，从而减少由金属光栅层反射环境光及面板光线所引起的颜色串扰及对比度降低等问题。
以上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 (12)

  1. 一种显示装置，其中，所述显示装置包括裸眼立体显示光栅、液晶显示面板及背光模组，其中，所述裸眼立体显示光栅放置于所述液晶显示面板的可视区域及所述背光模组之间；
    其中，所述裸眼立体显示光栅包括：
    周期性排布的透光区及反光区，所述透光区包括透明基底，所述反光区包括所述透明基底及依次沉积于所述透明基底上的金属氧化物层和金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率。
  2. 根据权利要求1所述的显示装置，其中，所述透光区用于透过光线为显示面板提供光源，所述反光区的宽度为
    Figure PCTCN2017093073-appb-100001
    所述反光区的周期为
    Figure PCTCN2017093073-appb-100002
    其中，所述Wp为所述显示面板的像素宽度，所述Q为双眼瞳距，所述K为视点数。
  3. 根据权利要求1所述的显示装置，其中，所述金属氧化物层在可见光波段的反射率小于25％，所述金属光栅层在可见光波段的反射率大于90％，所述可见波段范围为390～780nm。
  4. 一种裸眼立体显示光栅的制造方法，其中，所述方法包括：
    准备一透明基底；
    在所述透明基底上沉积金属氧化物层；
    在所述金属氧化物层上沉积金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率；
    采用光刻法对所述金属氧化物层及所述金属光栅层进行蚀刻以暴露部分所述透明基板，形成周期性排布的透光区及反光区。
  5. 根据权利要求4所述的制造方法，其中，所述透光区用于透过光线为显示面板提供光源，所述反光区的宽度为
    Figure PCTCN2017093073-appb-100003
    所述反光区的周期为
    Figure PCTCN2017093073-appb-100004
    其中，所述Wp为所述显示面板的像素宽度，所述Q为双眼瞳距，所述K为视点数。
  6. 根据权利要求4所述的制造方法，其中，所述金属氧化物层在可见光波段的反射率小于25％，所述可见波段范围为390～780nm。
  7. 根据权利要求6所述的制造方法，其中，所述金属氧化物层为氧化钼。
  8. 根据权利要求4所述的制造方法，其中，所述金属光栅层在可见光波段的反射率大于90％，所述可见波段范围为390～780nm。
  9. 根据权利要求8所述的制造方法，其中，所述金属光栅层所采用的金属为金、铝及银中的一种。
  10. 一种裸眼立体显示光栅，其中，所述裸眼立体显示光栅包括：
    周期性排布的透光区及反光区，所述透光区包括透明基底，所述反光区包括所述透明基底及依次沉积于所述透明基底上的金属氧化物层和金属光栅层，其中，所述金属氧化物层的反射率小于所述金属光栅层的反射率。
  11. 根据权利要求10所述的裸眼立体显示光栅，其中，所述透光区用于透过光线为显示面板提供光源，所述反光区的宽度为
    Figure PCTCN2017093073-appb-100005
    所述反光区的周期为
    Figure PCTCN2017093073-appb-100006
    其中，所述Wp为所述显示面板的像素宽度，所述Q为双眼瞳距，所述K为视点数。
  12. 根据权利要求10所述的裸眼立体显示光栅，其中，所述金属氧化物层在可见光波段的反射率小于25％，所述金属光栅层在可见光波段的反射率大于90％，所述可见波段范围为390～780nm。
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