WO2017173688A1 - 3d显示装置 - Google Patents

3d显示装置 Download PDF

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Publication number
WO2017173688A1
WO2017173688A1 PCT/CN2016/080450 CN2016080450W WO2017173688A1 WO 2017173688 A1 WO2017173688 A1 WO 2017173688A1 CN 2016080450 W CN2016080450 W CN 2016080450W WO 2017173688 A1 WO2017173688 A1 WO 2017173688A1
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WIPO (PCT)
Prior art keywords
lens
glass substrate
disposed
display panel
display device
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PCT/CN2016/080450
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English (en)
French (fr)
Inventor
查国伟
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US15/107,926 priority Critical patent/US20170293151A1/en
Publication of WO2017173688A1 publication Critical patent/WO2017173688A1/zh
Anticipated expiration legal-status Critical
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    • 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
    • G02B30/27—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 lenticular arrays
    • G02B30/28—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 lenticular arrays involving active lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • 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
    • G02B30/22—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 stereoscopic type
    • G02B30/25—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 stereoscopic type using polarisation techniques
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display technology, and in particular, to a 3D display device.
  • Three Dimension (3D) stereoscopic display technology has been increasingly favored and favored by people.
  • the naked-eye 3D technology is popular because it has got rid of complicated auxiliary equipment, achieving naked-eye 3D display.
  • the mainstream naked-eye 3D display technology is mainly based on the spatial division of pixels. This method causes the display panel to resolve two-dimensional (2D) images when displaying 3D images. The degree is attenuated by half and does not provide a perfect 3D effect.
  • a conventional 3D display device includes a display panel 100 , a polarizer 200 disposed on the display panel 100 , and a liquid crystal lens 300 disposed on the polarizer 200 .
  • the focal length f will be less than 500 microns or even less than 200 microns; and the liquid crystal lens 300 is realized by a liquid crystal structure placed in the middle of two glass substrates, a conventional liquid crystal lens-based naked-eye 3D television display technology, due
  • the viewing distance of the human eye becomes smaller, and the focal length f is correspondingly smaller. which is It is necessary to reduce the distance between the pixel P and the liquid crystal lens. At this time, it is required to put forward higher requirements on the thinning of the glass substrate; on the other hand, in order to realize the 3D display effect, it is necessary to input corresponding extraordinary light to the liquid crystal lens 300.
  • the conventional method is to provide a polarizer 200 on the display panel 100, the polarizer 200 is an absorbing polarizer, comprising a protective layer, a bonding layer, and a polarizing layer, and the overall thickness is 200 micrometers. Above, this further increases the distance between the pixel and the liquid crystal lens, which is disadvantageous for achieving high-resolution naked-eye 3D display.
  • the metal wire grid is a periodic metal and dielectric layer arrangement structure, which has a high extinction ratio for the transverse magnetic field (Transverse Magnetic, TM) and the transverse electric field (Transverse Electric, TE) state, and can be significantly transparent.
  • TM Transverse Magnetic
  • TE Transverse Electric
  • the TM light perpendicular to the direction in which the metal wires are arranged reflects the TE light parallel to the direction in which the metal wires are arranged, and thus can be used as an ideal polarizer, and has been widely concerned because the thickness is only on the order of nanometers and the current preparation process is maturing.
  • An object of the present invention is to provide a 3D display device capable of reducing the thickness of a polarizer, reducing the distance between a pixel and a liquid crystal lens in a 3D display device, and realizing high-resolution naked-eye 3D screen display.
  • the present invention provides a 3D display device, including: a display panel, and a metal wire grid polarizer and a liquid crystal lens disposed above the display panel;
  • the liquid crystal lens includes: a lens upper glass substrate, a lens lower glass substrate disposed opposite to the lens upper glass substrate, and a common electrode disposed on a side of the lens glass substrate adjacent to the lens lower glass substrate, and disposed on the lens a plurality of parallel spaced strip electrodes on a side of the lower glass substrate adjacent to the glass substrate on the lens, and a liquid crystal layer disposed between the lower glass substrate and the glass substrate on the lens;
  • the metal wire grid polarizer is disposed between the display panel and the plurality of strip electrodes.
  • the display panel is an OLED display panel or an LCD display panel.
  • the metal wire grid polarizer is disposed on the display panel, and includes: a dielectric layer disposed on the display panel; and the plurality of parallel spaced metal lines disposed on the dielectric layer.
  • the metal wire grid polarizer is disposed on a side of the lens lower glass substrate away from the glass substrate on the lens, and includes: a plurality of parallel spaced metal disposed on a side of the lens lower glass substrate away from the glass substrate on the lens And a dielectric layer disposed between the plurality of parallel spaced metal lines and the lower lens glass substrate.
  • the metal wire grid polarizer is disposed between the lower lens glass substrate and the plurality of strip electrodes, and includes: a plurality of parallel spaced intervals disposed on a side of the lens lower glass substrate adjacent to the glass substrate on the lens a metal line, a dielectric layer disposed between the plurality of parallel spaced metal lines and the lower glass substrate, and a planar layer disposed on the plurality of metal lines, the plurality of strip electrodes Provided on the flat layer.
  • the metal wire grid polarizer has a period of 20 nm to 500 nm and a duty ratio of 0.1 to 0.9.
  • the material of the metal wire grid polarizer is aluminum, silver, or gold.
  • the length of the sub-pixels in the display panel is less than 60 microns.
  • the plurality of strip electrodes have a width of from 10 micrometers to 1000 micrometers.
  • the material of the dielectric layer is silicon dioxide, silicon monoxide, magnesium oxide, silicon nitride, titanium dioxide, or tantalum pentoxide.
  • the present invention also provides a 3D display device, comprising: a display panel, and a metal wire grid polarizer and a liquid crystal lens disposed above the display panel;
  • the liquid crystal lens includes: a lens upper glass substrate, a lens lower glass substrate disposed opposite to the lens upper glass substrate, and a common electrode disposed on a side of the lens glass substrate adjacent to the lens lower glass substrate, and disposed on the lens a plurality of parallel spaced strip electrodes on a side of the lower glass substrate adjacent to the glass substrate on the lens, and a liquid crystal layer disposed between the lower glass substrate and the glass substrate on the lens;
  • the metal wire grid polarizer is disposed between the display panel and the plurality of strip electrodes;
  • the display panel is an OLED display panel or an LCD display panel
  • the metal wire grid polarizer is disposed on the display panel, and includes: a dielectric layer disposed on the display panel; and the plurality of parallel spaced metal wires disposed on the dielectric layer.
  • the present invention provides a 3D display device including: a display panel, and a metal wire grid polarizer and a liquid crystal lens disposed above the display panel, by using a nanometer-scale metal
  • the wire grid polarizer replaces the conventional absorption type polarizer, and can reduce the thickness of the polarizer while reducing the distance between the pixel and the liquid crystal lens in the 3D display device, thereby achieving high resolution of the naked eye.
  • 3D screen display including: a display panel, and a metal wire grid polarizer and a liquid crystal lens disposed above the display panel, by using a nanometer-scale metal
  • the wire grid polarizer replaces the conventional absorption type polarizer, and can reduce the thickness of the polarizer while reducing the distance between the pixel and the liquid crystal lens in the 3D display device, thereby achieving high resolution of the naked eye.
  • 1 is a structural view of a conventional 3D display device
  • FIG. 2 is a structural diagram of a first embodiment of a 3D display device of the present invention.
  • Figure 3 is a structural view showing a second embodiment of the 3D display device of the present invention.
  • Fig. 4 is a structural diagram showing a third embodiment of the 3D display device of the present invention.
  • a 3D display device includes a display panel 30, and a metal wire grid polarizer 20 and a liquid crystal lens 10 disposed above the display panel 30.
  • the display panel 30 is a liquid crystal display (LCD) or an organic light emitting display (OLED).
  • the length of the sub-pixels in the display panel 30 is less than 60 micrometers, and the smaller the size of the sub-pixels, the higher the resolution of the display panel 30.
  • the liquid crystal lens 10 includes a lens upper glass substrate 1 , a lens lower glass substrate 5 disposed opposite to the lens upper glass substrate 1 , and a glass substrate 1 disposed on the lens adjacent to the lens lower glass substrate 5 side.
  • a common electrode 2 a plurality of strip electrodes 4 arranged in parallel on the side of the lens lower glass substrate 5 adjacent to the lens upper glass substrate 1, and a glass substrate 5 disposed on the lens lower glass substrate 5 and the lens upper glass substrate 1 Between the liquid crystal layer 3.
  • the common electrode 2 is a monolithic plate electrode.
  • liquid crystal molecules in the liquid crystal layer 3 liquid crystal molecules having a higher refractive index difference between ordinary light and ordinary light (o light) are preferable in order to lower the thickness of the liquid crystal lens.
  • An alignment layer is further disposed on a side of the lower glass substrate 5 of the liquid crystal lens adjacent to the liquid crystal layer 3.
  • the width and spacing of the plurality of strip electrodes 4 may be equal or unequal, and the specific width may be selected from the range of 10 to 1000 ⁇ m.
  • the metal wire grid polarizer 20 can filter the light emitted from the display panel 30 to generate polarized light.
  • the metal wire grid polarizer 20 is disposed at any position between the display panel 30 and the plurality of strip electrodes 4, optionally, in the first embodiment of the invention, the metal The wire grid polarizer 20 is disposed on the display panel 30, and includes: a dielectric layer 22 disposed on the display panel 30, and the plurality of parallel spaced metal lines 21 disposed on the dielectric layer 22. . Specifically, the metal wire grid polarizer 20 is disposed on a light emitting surface of the display panel 30, such as an upper glass substrate of the LCD display panel.
  • the working process of the 3D display device is: the display panel 30 emits light, and the light is filtered by the metal wire grid polarizer 20 to form a polarized light from the lower glass of the liquid crystal lens.
  • a liquid crystal lens is incident on the lower side of the substrate 5, and a voltage is applied to the strip electrode 4 and the common electrode 2 to rotate the liquid crystal molecules in the liquid crystal layer 3, wherein the voltage of the strip electrode 4 in the edge region is high, and the center The voltage of the strip electrode 4 is low, so that the refractive index of the liquid crystal layer 3 gradually decreases from the central region to the edge region to form a lens effect, and the change in the refractive index causes the polarized light to be transmitted through the liquid crystal layer 3 Focus on the predetermined direction to achieve 3D picture display.
  • the metal wire grid polarizer 20 is disposed on a side of the lens lower glass substrate 5 away from the glass substrate 1 on the lens, and includes: a plurality of parallel-arranged metal wires 21 on a side of the lens lower glass substrate 5 away from the glass substrate 1 on the lens, and a plurality of metal wires 21 arranged in parallel and spaced apart from the lens lower glass substrate 5 Intervening dielectric layer 22.
  • the metal wire grid polarizer 20 is disposed between the lens lower glass substrate 5 and the plurality of strip electrodes 4, and includes: a plurality of parallel-arranged metal wires 21 disposed on a side of the lens lower glass substrate 5 adjacent to the glass substrate 1 on the lens, and a plurality of metal wires 21 arranged in parallel and spaced apart from the lens lower glass substrate 5
  • a dielectric layer 22 is disposed between the dielectric layer 22 and the planarization layer 23 disposed on the plurality of metal lines 21, and the plurality of strip electrodes 4 are disposed on the planar layer 23.
  • the material of the metal wire grid polarizer 20 needs to have a large refractive index imaginary part.
  • the material of the metal wire grid 20 is aluminum (Al), silver (Ag), or gold (Au).
  • the material of the dielectric layer 22 is silicon dioxide (SiO 2 ), silicon monoxide (SiO), magnesium oxide (MgO), silicon nitride (Si 3 N 4 ), titanium dioxide (TiO 2 ), or tantalum pentoxide. (Ta 2 O 5 ).
  • the polarization property of the metal wire grid polarizer 20 is caused by the asymmetry of the TM light and the TE light as it passes through the metal wire grid polarizer 20, wherein the polarization direction is perpendicular to the direction in which the metal wire 21 extends.
  • the light can be transmitted, and the TE light whose polarization direction is parallel to the extending direction of the metal line 21 is reflected, and the polarization characteristics and effective band of the metal wire grid polarizer 20 can be changed by changing the structural parameters of the metal wire grid polarizer 20.
  • Customizing that is, adjusting the period and duty ratio of the metal wire grid polarizer 20, wherein the period of the metal wire grid polarizer 20 refers to the distance between the left and left boundaries of the adjacent metal lines 21,
  • the duty ratio is a ratio of the width of the metal line 21 to the period.
  • the metal wire grid polarizer 20 has a period of 20 nm to 500 nm and a duty ratio of 0.1 to 0.9.
  • the nano-level metal wire grid polarizer 20 is used to replace the conventional micron-sized high-thickness absorption type polarizer placed between the display panel 30 and the liquid crystal lens 10, which can reduce the thickness of the polarizer and reduce the pixel and liquid crystal in the 3D display device.
  • the distance between the lenses realizes high-resolution naked-eye 3D picture display, and overcomes the technical problem that the focal length of the liquid crystal lens becomes small due to the reduction in the size of the pixel P.
  • the preparation process of the small-sized metal wire grid polarizer is very mature and can be mass-produced. Therefore, the present invention is particularly suitable for a small-sized 3D display device, that is, an advantage when applied to the field of mobile display.
  • the present invention provides a 3D display device including: a display panel, and a metal wire grid polarizer and a liquid crystal lens disposed above the display panel, by using a metal wire of a nanometer order
  • the gate polarizer replaces the conventional absorption type polarizer, and can reduce the thickness of the polarizer while reducing the distance between the pixel and the liquid crystal lens in the 3D display device while realizing the input of polarized light to the liquid crystal lens, thereby realizing high-resolution naked eye 3D.
  • the screen is displayed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
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Abstract

一种3D显示装置包括：显示面板(30)、以及设于显示面板上方的金属线栅偏光片(20)和液晶透镜(10)。液晶透镜包括：透镜上玻璃基板(1)，与透镜上玻璃基板相对设置的透镜下玻璃基板(5)，设于透镜上玻璃基板靠近透镜下玻璃基板一侧的公共电极(2)、设于透镜下玻璃基板靠近透镜上玻璃基板一侧的多个平行间隔排列的条状电极(4)，以及设于透镜下玻璃基板与透镜上玻璃基板之间的液晶层(3)。金属线栅偏光片设于显示面板与多个条状电极之间，能够降低偏光片的厚度，实现高解析度的裸眼3D画面显示。

Description

3D显示装置 技术领域
本发明涉及液晶显示技术领域，尤其涉及一种3D显示装置。
背景技术
随着数字视听技术进入高清化的时代，三维(Three Dimension，3D)立体显示技术日益受到人们的关注和青睐，其中裸眼3D技术由于摆脱了复杂的辅助设备而大受欢迎，实现裸眼3D显示的方式多种多样，如光栅、液晶透镜等；目前主流的裸眼3D显示技术主要基于像素的空间分割方式，此方式会导致显示面板在显示3D图像时相对于二维(Two Dimension，2D)图像解析度衰减一半，无法呈现完美的3D效果。
伴随着小尺寸面板显示技术的进步，手机和平板电脑等小尺寸显示面板的解析度逐渐提高，超高清分辨率(3840*2160)显示的高阶技术已经逐渐走向市场，从而使得3D图像的解析度也逐渐提高了全高清(Full High Definition，FHD)的水平，与此同时，子像素(Sub Pixel)的尺寸也随之减小，逐渐逼近60微米、50微米甚至40微米及以下。
如图1所示，为现有的一种3D显示装置，包括：显示面板100、设于所述显示面板100上的偏光片200、设于所述偏光片200上的液晶透镜300，为了实现裸眼3D显示，需要将显示面板100的像素P放置于液晶透镜300的焦平面上，其焦距f的计算公式为f＝L*Wp/X，其中L为人眼距离3D显示装置的距离(观看距离)，Wp为双眼所看到的不同视点间的像素间距，X为双眼间的距离(通常为65mm)，由于手持设备的观看距离约为10厘米至40厘米，当子像素的尺寸小到一定程度时，焦距f会小于500微米甚至到200微米以下；而液晶透镜300是通过放置于两块玻璃基板中间的液晶结构实现的，传统的基于液晶透镜的裸眼3D电视显示技术，由于观看距离较大，使得焦距f较大，往往需要较厚的玻璃基板甚至增厚层实现该效果，而液晶透镜用于手持式设备时，人眼观看距离变小，焦距f也相应变小，也即需要减小像素P与液晶透镜之间的距离，此时就需要对玻璃基板的薄化提出更高的要求；另一方面，为实现3D显示效果，需要对液晶透镜300输入相应的非寻常光(e光)偏振光，传统技术采用的方法为在显示面板100上设置偏光片200，该偏光片200为吸收型偏光片，包含保护层、粘接层、以及偏光层，总体厚度在200微米以上，这一点进一步增加了像素与液晶透 镜的距离，不利于实现高解析度的裸眼3D显示。
金属线栅是一种周期性的金属与介质层排布结构，其对于横向磁场(Transverse Magnetic，TM)和横向电场(Transverse Electric，TE)态光场具有很高的消光比，能够显著地透过垂直于金属线排列方向的TM光而反射平行于金属线排列方向的TE光，因而可以作为理想的偏光片使用，由于厚度仅有纳米量级并且目前的制备工艺逐渐成熟而受到广泛关注。
发明内容
本发明的目的在于提供一种3D显示装置，能够降低偏光片的厚度，降低3D显示装置中像素与液晶透镜之间的距离，实现高解析度的裸眼3D画面显示。
为实现上述目的，本发明提供一种3D显示装置，包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜；
所述液晶透镜包括：透镜上玻璃基板、与所述透镜上玻璃基板相对设置的透镜下玻璃基板、设于所述透镜上玻璃基板靠近透镜下玻璃基板一侧的公共电极、设于所述透镜下玻璃基板靠近透镜上玻璃基板一侧的多个平行间隔排列的条状电极、以及设于所述透镜下玻璃基板与透镜上玻璃基板之间的液晶层；
所述金属线栅偏光片设于所述显示面板与所述多个条状电极之间。
所述显示面板为OLED显示面板、或者LCD显示面板。
所述金属线栅偏光片设于所述显示面板上，包括：设于所述显示面板上的介质层、以及设于所述介质层上的所述多个平行间隔排列的金属线。
所述金属线栅偏光片设于所述透镜下玻璃基板远离透镜上玻璃基板的一侧，包括：设于所述透镜下玻璃基板远离透镜上玻璃基板的一侧的多个平行间隔排列的金属线、以及设于所述多个平行间隔排列的金属线与所述透镜下玻璃基板之间的介质层。
所述金属线栅偏光片设于所述透镜下玻璃基板与所述多个条状电极之间，包括：设于所述透镜下玻璃基板靠近透镜上玻璃基板的一侧的多个平行间隔排列的金属线、设于所述多个平行间隔排列的金属线与所述透镜下玻璃基板之间的介质层、以及设于所述多个金属线上的平坦层，所述多个条状电极设于所述平坦层上。
所述金属线栅偏光片的周期为20纳米到500纳米，占空比为0.1至0.9。
所述金属线栅偏光片的材料为铝、银、或金。
所述显示面板中的子像素的长度小于60微米。
所述多个条状电极的宽度为10微米到1000微米。
所述介质层的材料为二氧化硅、一氧化硅、氧化镁、氮化硅、二氧化钛、或五氧化二钽。
本发明还提供一种3D显示装置，包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜；
所述液晶透镜包括：透镜上玻璃基板、与所述透镜上玻璃基板相对设置的透镜下玻璃基板、设于所述透镜上玻璃基板靠近透镜下玻璃基板一侧的公共电极、设于所述透镜下玻璃基板靠近透镜上玻璃基板一侧的多个平行间隔排列的条状电极、以及设于所述透镜下玻璃基板与透镜上玻璃基板之间的液晶层；
所述金属线栅偏光片设于所述显示面板与所述多个条状电极之间；
其中，所述显示面板为OLED显示面板、或者LCD显示面板；
其中，所述金属线栅偏光片设于所述显示面板上，包括：设于所述显示面板上的介质层、以及设于所述介质层上的所述多个平行间隔排列的金属线。
本发明的有益效果：本发明提供的一种3D显示装置，该3D显示装置包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜，通过采用纳米量级的金属线栅偏光片取代传统的吸收型偏光片，在实现向液晶透镜输入偏振光的同时，能够降低偏光片的厚度，降低3D显示装置中像素与液晶透镜之间的距离，实现高解析度的裸眼3D画面显示。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为现有的一种3D显示装置的结构图；
图2为本发明3D显示装置的第一实施例的结构图；
图3为本发明3D显示装置的第二实施例的结构图；
图4为本发明3D显示装置的第三实施例的结构图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2，本发明第一实施例的3D显示装置，包括：显示面板30、以及设于所述显示面板30上方的金属线栅偏光片20和液晶透镜10。
具体地，所述显示面板30为液晶显示面板(Liquid Crystal Display，LCD)、或有机发光二极管显示面板(Organic Light Emitting Display，OLED)。所述显示面板30中的子像素的长度小于60微米，子像素的尺寸越小，显示面板30的解析度越高。
具体地，所述液晶透镜10包括：透镜上玻璃基板1、与所述透镜上玻璃基板1相对设置的透镜下玻璃基板5、设于所述透镜上玻璃基板1靠近透镜下玻璃基板5一侧的公共电极2、设于所述透镜下玻璃基板5靠近透镜上玻璃基板1一侧的多个平行间隔排列的条状电极4、以及设于所述透镜下玻璃基板5与透镜上玻璃基板1之间的液晶层3。
进一步地，所述公共电极2为整块的板状电极。在选择所述液晶层3中的液晶分子时，优选e光与寻常光(o光)折射率差更高的液晶分子，以便于降低液晶透镜的厚度。所述在所述液晶透镜的下玻璃基板5靠近液晶层3的一侧还设有配向层。所述多个条状电极4的宽度及间距可以相等、也可以不相等，具体的宽度选择范围为10-1000μm。
具体地，所述金属线栅偏光片20能够对显示面板30发出的光线进行过滤，产生偏振光。
具体地，所述金属线栅偏光片20设于所述显示面板30与所述多个条状电极4之间的任意位置，可选地，在本发明的第一实施例中，所述金属线栅偏光片20设于所述显示面板30上，包括：设于所述显示面板30上的介质层22、以及设于所述介质层22上的所述多个平行间隔排列的金属线21。具体地，所述金属线栅偏光片20设于所述显示面板30的出光面上，例如LCD显示面板的上玻璃基板上。
需要说明的是，所述3D显示装置的工作过程为：所述显示面板30发出光线，该光线经过金属线栅偏光片20过滤，形成一偏振光，该偏振光从所述液晶透镜的下玻璃基板5的下方射入液晶透镜，向所述条状电极4、和公共电极2施加电压，使得液晶层3中的液晶分子旋转，其中，边缘区域的条状电极4的电压较高，而中心区域条状电极4的电压较低，使得液晶层3的折射率从中央区域到边缘区域逐渐减小，形成透镜效果，该折射率的的变化使得上述偏振光在透过该液晶层3时被聚焦至预定的方向，实现3D画面显示。
可选地，请参阅图3，在本发明的第二实施例中，所述金属线栅偏光片20设于所述透镜下玻璃基板5远离透镜上玻璃基板1的一侧，包括：设于 所述透镜下玻璃基板5远离透镜上玻璃基板1的一侧的多个平行间隔排列的金属线21、以及设于所述多个平行间隔排列的金属线21与所述透镜下玻璃基板5之间的介质层22。
可选地，请参阅图4，在本发明的第三实施例中，所述金属线栅偏光片20设于所述透镜下玻璃基板5与所述多个条状电极4之间，包括：设于所述透镜下玻璃基板5靠近透镜上玻璃基板1的一侧的多个平行间隔排列的金属线21、设于所述多个平行间隔排列的金属线21与所述透镜下玻璃基板5之间的介质层22、以及设于所述多个金属线21上的平坦层23，所述多个条状电极4设于所述平坦层23上。
具体地，所述金属线栅偏光片20的材料需要具有较大的折射率虚部，优选地，所述金属线栅20的材料为铝(Al)、银(Ag)、或金(Au)。所述介质层22的材料为二氧化硅(SiO2)、一氧化硅(SiO)、氧化镁(MgO)、氮化硅(Si3N4)、二氧化钛(TiO2)、或五氧化二钽(Ta2O5)。
进一步地，金属线栅偏光片20的偏振性能是由TM光和TE光在通过金属线栅偏光片20时的不对称性引起的，其中偏振方向垂直于所述金属线21的延伸方向的TM光能够透过，而偏振方向平行于所述金属线21的延伸方向的TE光将被反射，并且金属线栅偏光片20的偏振特性及有效波段可以通过改变金属线栅偏光片20的结构参数来进行定制，即调整金属线栅偏光片20的周期及占空比，其中，所述金属线栅偏光片20的周期是指相邻的金属线21的左边界与左边界之间的距离，占空比是金属线21的宽度与周期的比值，优选地，所述金属线栅偏光片20的周期为20纳米到500纳米，占空比为0.1至0.9。
采用纳米量级的金属线栅偏光片20替换传统微米量级的高厚吸收型偏光片放置于显示面板30和液晶透镜10之间，能够降低偏光片的厚度，降低3D显示装置中像素与液晶透镜之间的距离，实现高解析度的裸眼3D画面显示，克服由于像素P尺寸减小所带来的液晶透镜焦距变小的技术难题。目前，小尺寸的金属线栅偏光片制备工艺已经十分成熟、并且能够进行大规模生产，因而，本发明尤其适用于小尺寸的3D显示装置，也即在应用于移动显示领域时的优势明显。
综上所述，本发明提供的一种3D显示装置，该3D显示装置包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜，通过采用纳米量级的金属线栅偏光片取代传统的吸收型偏光片，在实现向液晶透镜输入偏振光的同时，能够降低偏光片的厚度，降低3D显示装置中像素与液晶透镜之间的距离，实现高解析度的裸眼3D画面显示。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (16)

  1. 一种3D显示装置，包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜；
    所述液晶透镜包括：透镜上玻璃基板、与所述透镜上玻璃基板相对设置的透镜下玻璃基板、设于所述透镜上玻璃基板靠近透镜下玻璃基板一侧的公共电极、设于所述透镜下玻璃基板靠近透镜上玻璃基板一侧的多个平行间隔排列的条状电极、以及设于所述透镜下玻璃基板与透镜上玻璃基板之间的液晶层；
    所述金属线栅偏光片设于所述显示面板与所述多个条状电极之间。
  2. 如权利要求1所述的3D显示装置，其中，所述显示面板为OLED显示面板、或者LCD显示面板。
  3. 如权利要求1所述的3D显示装置，其中，所述金属线栅偏光片设于所述显示面板上，包括：设于所述显示面板上的介质层、以及设于所述介质层上的所述多个平行间隔排列的金属线。
  4. 如权利要求1所述的3D显示装置，其中，所述金属线栅偏光片设于所述透镜下玻璃基板远离透镜上玻璃基板的一侧，包括：设于所述透镜下玻璃基板远离透镜上玻璃基板的一侧的多个平行间隔排列的金属线、以及设于所述多个平行间隔排列的金属线与所述透镜下玻璃基板之间的介质层。
  5. 如权利要求1所述的3D显示装置，其中，所述金属线栅偏光片设于所述透镜下玻璃基板与所述多个条状电极之间，包括：设于所述透镜下玻璃基板靠近透镜上玻璃基板的一侧的多个平行间隔排列的金属线、设于所述多个平行间隔排列的金属线与所述透镜下玻璃基板之间的介质层、以及设于所述多个金属线上的平坦层，所述多个条状电极设于所述平坦层上。
  6. 如权利要求1所述的3D显示装置，其中，所述金属线栅偏光片的周期为20纳米到500纳米，占空比为0.1至0.9。
  7. 如权利要求1所述的3D显示装置，其中，所述金属线栅偏光片的材料为铝、银、或金。
  8. 如权利要求1所述的3D显示装置，其中，所述显示面板中的子像素的长度小于60微米。
  9. 如权利要求1所述的3D显示装置，其中，所述多个条状电极的宽度为10微米到1000微米。
  10. 如权利要求3所述的3D显示装置，其中，所述介质层的材料为二氧化硅、一氧化硅、氧化镁、氮化硅、二氧化钛、或五氧化二钽。
  11. 一种3D显示装置，包括：显示面板、以及设于所述显示面板上方的金属线栅偏光片和液晶透镜；
    所述液晶透镜包括：透镜上玻璃基板、与所述透镜上玻璃基板相对设置的透镜下玻璃基板、设于所述透镜上玻璃基板靠近透镜下玻璃基板一侧的公共电极、设于所述透镜下玻璃基板靠近透镜上玻璃基板一侧的多个平行间隔排列的条状电极、以及设于所述透镜下玻璃基板与透镜上玻璃基板之间的液晶层；
    所述金属线栅偏光片设于所述显示面板与所述多个条状电极之间；
    其中，所述显示面板为OLED显示面板、或者LCD显示面板；
    其中，所述金属线栅偏光片设于所述显示面板上，包括：设于所述显示面板上的介质层、以及设于所述介质层上的所述多个平行间隔排列的金属线。
  12. 如权利要求11所述的3D显示装置，其中，所述金属线栅偏光片的周期为20纳米到500纳米，占空比为0.1至0.9。
  13. 如权利要求11所述的3D显示装置，其中，所述金属线栅偏光片的材料为铝、银、或金。
  14. 如权利要求11所述的3D显示装置，其中，所述显示面板中的子像素的长度小于60微米。
  15. 如权利要求11所述的3D显示装置，其中，所述多个条状电极的宽度为10微米到1000微米。
  16. 如权利要求11所述的3D显示装置，其中，所述介质层的材料为二氧化硅、一氧化硅、氧化镁、氮化硅、二氧化钛、或五氧化二钽。
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