WO2020168602A1 - Liquid crystal grating device and liquid crystal display device - Google Patents

Liquid crystal grating device and liquid crystal display device Download PDF

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Publication number
WO2020168602A1
WO2020168602A1 PCT/CN2019/078041 CN2019078041W WO2020168602A1 WO 2020168602 A1 WO2020168602 A1 WO 2020168602A1 CN 2019078041 W CN2019078041 W CN 2019078041W WO 2020168602 A1 WO2020168602 A1 WO 2020168602A1
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liquid crystal
electrode
substrate
strip
electrode layer
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PCT/CN2019/078041
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French (fr)
Chinese (zh)
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霍英东
张晶
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深圳市华星光电半导体显示技术有限公司
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Publication of WO2020168602A1 publication Critical patent/WO2020168602A1/en

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    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • 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
    • 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
    • G02F1/133528—Polarisers

Definitions

  • the present invention relates to the field of display technology, in particular to a liquid crystal grating device and a liquid crystal display device.
  • Liquid Crystal Display has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as: mobile phones, personal digital assistants (PDA), digital cameras, computer screens and notebook computers Screen etc.
  • PDA personal digital assistants
  • LCD Liquid Crystal Display
  • a liquid crystal display device generally includes a liquid crystal display panel.
  • the liquid crystal display panel includes a color filter substrate (Color Filter Substrate) and a thin film transistor array substrate (Thin Film Transistor Array) arranged oppositely.
  • Its working principle is to apply a driving voltage on the pixel electrode of the TFT array substrate and the common electrode of the color filter substrate. To control the rotation of the liquid crystal molecules in the liquid crystal layer, refract light to produce a picture.
  • a curved grating is a diffractive optical element, usually used to realize wavefront sensing and multi-plane simultaneous imaging.
  • the optical principle can be explained by the circuitous phase effect.
  • This circuitous phase effect can theoretically obtain any form of light wavefront modulation, such as generating diffractive optical elements, computer holography, and phase modulation of synthetic aperture arrays.
  • Quadratically distorted grating grating, qd-grating can make different diffraction orders have different focusing capabilities through special phase modulation.
  • the second-curved grating and the imaging lens can be used together to realize the space Objects on multiple planes are simultaneously imaged on the same plane. This is the one
  • a custom-processed diffractive optical element can be used as a quadratic curved grating, and the quadratic curved grating can be customized to be an amplitude type and a phase type according to requirements.
  • This type of quadratic curved grating is cheap, but the parameters are fixed and cannot be adjusted.
  • the spatial light modulator can also be used as a second-curved grating, a pure phase liquid crystal spatial light modulator can be used as a phase-type second-curved grating, and an amplitude-type digital micro-mirror array can be used as an amplitude-type second-curved grating.
  • the parameters of the modulator are adjustable and can be controlled in real time, but the price is relatively expensive.
  • the purpose of the present invention is to provide a liquid crystal grating device, which can be used as a second-curved grating and has a lower product cost.
  • Another object of the present invention is to provide a liquid crystal display device, including a liquid crystal grating device that can be used as a secondary curved grating, with low product cost.
  • the present invention provides a liquid crystal grating device, which includes a first substrate and a second substrate disposed oppositely, a transparent first electrode layer disposed on the side of the first substrate close to the second substrate, and a transparent first electrode layer disposed on the second substrate.
  • the first electrode layer includes a plurality of first electrode groups arranged at intervals, and each first electrode group includes a plurality of first strip-shaped electrodes arranged at intervals, each of the first strip-shaped electrodes is arc-shaped, and a plurality of The centers of the first strip electrodes coincide.
  • the liquid crystal grating device further includes a second polarizer arranged on a side of the second substrate away from the first substrate.
  • the polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer.
  • the entire surface of the second electrode layer covers the second substrate.
  • the second electrode layer includes a plurality of second electrode groups arranged at intervals, each second electrode group includes a plurality of second strip electrodes arranged at intervals, and each second strip electrode corresponds to a first strip electrode , The projection of each second strip electrode on the first substrate coincides with the corresponding first strip electrode.
  • the number of first strip electrodes in any two first electrode groups is different.
  • the number of first strip electrodes in the first electrode group close to the center of the plurality of first strip electrodes is greater than the number of first electrode groups in the first electrode group far from the center of the plurality of first strip electrodes The number of strip electrodes.
  • Each first strip electrode is connected to a driving voltage, and the first strip electrodes in the same first electrode group are connected to the same driving voltage.
  • the distance between any two adjacent first strip electrodes is equal; the width of the multiple first strip electrodes is equal;
  • the materials of the first electrode layer and the second electrode layer are both ITO.
  • the present invention also provides a liquid crystal display device, including the above-mentioned liquid crystal grating device.
  • the liquid crystal grating device of the present invention includes a first substrate and a second substrate that are opposed to each other, a transparent first electrode layer provided on the side of the first substrate close to the second substrate, and a transparent first electrode layer provided on the second substrate close to the second substrate.
  • the liquid crystal display device of the present invention includes a liquid crystal grating device that can be used as a secondary curved grating, and the product cost is low.
  • FIG. 1 is a schematic cross-sectional view of the first embodiment of the liquid crystal grating device of the present invention
  • FIG. 2 is a schematic top view of the first substrate and the first electrode layer of the liquid crystal grating device of the present invention
  • FIG. 3 is a schematic cross-sectional view of a second embodiment of the liquid crystal grating device of the present invention.
  • FIG. 4 is a schematic cross-sectional view of the third embodiment of the liquid crystal grating device of the present invention.
  • the liquid crystal grating device of the first embodiment of the present invention is an amplitude-adjustable liquid crystal grating device, including first substrates disposed oppositely 10 And the second substrate 20 , Located on the first substrate 10 Close to the second substrate 20 Transparent first electrode layer on one side 30 , Located on the second substrate 20 Close to the first substrate 10 Transparent second electrode layer on one side 40 , Located on the first electrode layer 30 And the second electrode layer 40 Liquid crystal layer 50 , Located on the first substrate 10 Away from the second substrate 20 First polarizer on one side 60 , Located on the second substrate 20 Away from the first substrate 10 Second polarizer on one side 70 .
  • the first electrode layer 30 Including a plurality of first electrode groups arranged at intervals 31 , Each first electrode group 31 Including a plurality of first strip electrodes arranged at intervals 311 , Each first strip electrode 311 All are arc-shaped, with multiple first strip electrodes 311 The centers of the circles coincide.
  • the first polarizer 60 The polarization direction and the second polarizer 70 The polarization direction is vertical.
  • the second electrode layer 40 Cover the entire surface of the second substrate 20 .
  • any two first electrode groups 31 The first strip electrode in 311 The number is different.
  • each first strip electrode 311 Connect the driving voltage, the second electrode layer 40 Access to the common voltage, so as to the liquid crystal layer 50
  • the liquid crystal molecules in the device are driven, so that the liquid crystal grating device can be used as a secondary bending grating.
  • the same first electrode group 31 The first strip electrode in 311 The connected drive voltage is the same.
  • any two adjacent first strip electrodes 311 The spacing between is equal. Multiple first strip electrodes 311 The widths are equal.
  • the first electrode layer 30 And the second electrode layer 40 The materials are all transparent electrode materials.
  • the first electrode layer 30 And the second electrode layer 40 The materials are all indium tin oxide ( ITO ).
  • each first strip electrode 311 Connect the driving voltage, the second electrode layer 40 Access to a common voltage, so that the liquid crystal layer 50
  • the liquid crystal molecules in the liquid crystal molecules are driven, so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane, specifically, the same first electrode group 31
  • the first strip electrode in 311 The connected driving voltage is the same, through the different first electrode groups 31
  • the first strip electrode in 311 Different drive voltages are connected to make the liquid crystal layer 50 Corresponding to different first electrode groups 31
  • the polarized light in the area has a different phase, and because of the first polarizer 60 And second polarizer 70
  • the polarization directions are perpendicular to each other, so the liquid crystal grating device can be controlled to correspond to different first electrode groups 31 The transmittance of the area.
  • the liquid crystal grating device can adjust the first strip electrode 311
  • the connected driving voltage realizes the adjustment of grating period, duty cycle, transmittance and phase difference.
  • the present invention can control the focusing ability of each diffraction order and each diffraction order Second light energy distribution (for example, adjusting the phase difference to 0.638 When ⁇ , the diffraction order is 0 Level and positive and negative 1
  • the present invention has a simple structure and lower cost.
  • the first strip shape can be adjusted.
  • the connected driving voltage enables the liquid crystal grating device to image objects in multiple planes in space on multiple planes respectively, so that the switching between multi-plane imaging and single-plane imaging can be realized without mechanical movement to remove the liquid crystal grating device. .
  • the difference between the liquid crystal grating device of the second embodiment of the present invention and the above-mentioned first embodiment is that the second substrate 20 Set on the second substrate 20 Away from the first substrate 10 A polarizer is no longer provided on one side. Therefore, the liquid crystal grating device of the second embodiment of the present invention is a phase-adjustable liquid crystal grating device, and the rest are the same as the first real time, and will not be repeated here.
  • the liquid crystal grating of the second embodiment of the present invention can also be adjusted by adjusting the first strip electrode 311
  • the connected driving voltage realizes the adjustment of grating period, duty ratio, transmittance and phase difference, thereby controlling the focusing ability of each diffraction order and the light energy distribution of each diffraction order.
  • the second electrode layer 40 It is no longer a whole surface structure, but includes a plurality of second electrode groups arranged at intervals 41 , Each second electrode group 41 Including a plurality of second strip electrodes arranged at intervals 411 , Each second strip electrode 411 With a first strip electrode 311 Correspondingly, every second strip electrode 411 On the first substrate 10 The projection on the corresponding first strip electrode 311 Overlap, so that when the third embodiment of the present invention is working, each first strip electrode 311 Connect the driving voltage, each second strip electrode 411 Access to a common voltage, so that the liquid crystal layer 50 The liquid crystal molecules in the liquid crystal molecules are driven so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane.
  • the connected public voltage can realize the 50
  • the voltages on both sides of different areas are controlled more precisely, so that the grating period, duty cycle, transmittance and phase difference can be adjusted more finely.
  • the present invention also provides a liquid crystal display device including the above-mentioned liquid crystal grating device, and the structure of the liquid crystal grating device will not be described repeatedly here.
  • the liquid crystal display device of the present invention includes the above-mentioned liquid crystal grating device.
  • each first strip electrode of the liquid crystal grating device is 311 Connect the driving voltage, the second electrode layer 40 Access to a common voltage, so that the liquid crystal layer 50
  • the liquid crystal molecules in the liquid crystal molecules are driven so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane.
  • the connected driving voltage realizes the adjustment of grating period, duty ratio, transmittance and phase difference.
  • the liquid crystal grating device of the present invention can control the focusing of each diffraction order Compared with the existing spatial light modulator, the structure of the liquid crystal grating device of the present invention is simple, so that the liquid crystal display device of the present invention can be used as a second-curved grating. Based on the liquid crystal grating device, the overall structure is simple and the cost is low.
  • the liquid crystal grating device of the present invention includes a first substrate and a second substrate that are opposed to each other, a transparent first electrode layer provided on the side of the first substrate close to the second substrate, and a transparent first electrode layer provided on the second substrate close to the first substrate.
  • the first electrode layer includes A plurality of first electrode groups are arranged at intervals, each first electrode group includes a plurality of first strip electrodes arranged at intervals, each first strip electrode is arc-shaped, and the center of the plurality of first strip electrodes Overlapping, the liquid crystal grating device of the present invention can be used as a secondary curved grating, including amplitude type and phase type.
  • the grating period, duty ratio, transmittance and phase difference can be realized by adjusting the driving voltage applied to the first strip electrode The adjustment, and the product cost is lower.
  • the liquid crystal display device of the present invention includes a liquid crystal grating device that can be used as a secondary curved grating, and the product cost is low.

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

Abstract

A liquid crystal grating device and a liquid crystal display device. The liquid crystal grating device comprises: a first substrate (10) and a second substrate (20) opposite to each other; a transparent first electrode layer (30) disposed on the side of the first substrate (10) close to the second substrate (20), a transparent second electrode layer (40) disposed on the side of the second substrate (20) close to the first substrate (10); a liquid crystal layer (50) disposed between the first electrode layer (30) and the second electrode layer (40); and a first polarizer (60) disposed on the side of the first substrate (10) away from the second substrate (20). The first electrode layer (30) comprises a plurality of first electrode sets (31) arranged at intervals, each of the first electrode sets (31) comprises a plurality of first strip-shaped electrodes (311) arranged at intervals, each of the first strip-shaped electrodes (311) is in an arc shape, and the circle centers of the plurality of first strip-shaped electrodes (311) coincide with one another. The liquid crystal grating device can serve as a quadratically distorted grating, which comprises an amplitude type and a phase type; the grating period, the duty ratio, the transmittance, and the phase difference can be adjusted by adjusting the driving voltage applied to the first strip-shaped electrodes (311), and the product cost is low.

Description

液晶光栅装置及液晶显示装置Liquid crystal grating device and liquid crystal display device 技术领域Technical field
本发明涉及显示技术领域，尤其涉及一种液晶光栅装置及液晶显示装置。The present invention relates to the field of display technology, in particular to a liquid crystal grating device and a liquid crystal display device.
背景技术Background technique
液晶显示装置（Liquid Crystal Display，LCD）具有机身薄、省电、无辐射等众多优点，得到了广泛的应用，如：移动电话、个人数字助理（PDA）、数字相机、计算机屏幕和笔记本电脑屏幕等。Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, no radiation, etc., and has been widely used, such as: mobile phones, personal digital assistants (PDA), digital cameras, computer screens and notebook computers Screen etc.
现有技术中，液晶显示装置一般包括液晶显示面板。液晶显示面板包括相对设置的彩膜基板（Color Filter Substrate）及薄膜晶体管阵列基板（Thin Film Transistor Array Substrate，TFT Array Substrate）以及配置于彩膜基板与TFT阵列基板之间的液晶层（Liquid Crystal Layer），其工作原理是通过在TFT阵列基板的像素电极与彩膜基板的公共电极上施加驱动电压来控制液晶层的液晶分子的旋转，将光线折射出来产生画面。In the prior art, a liquid crystal display device generally includes a liquid crystal display panel. The liquid crystal display panel includes a color filter substrate (Color Filter Substrate) and a thin film transistor array substrate (Thin Film Transistor Array) arranged oppositely. Substrate, TFT Array Substrate) and the liquid crystal layer (Liquid Crystal Layer) arranged between the color filter substrate and the TFT array substrate. Its working principle is to apply a driving voltage on the pixel electrode of the TFT array substrate and the common electrode of the color filter substrate. To control the rotation of the liquid crystal molecules in the liquid crystal layer, refract light to produce a picture.
弯曲光栅（distorted grating）是一种衍射光学元件，通常用来实现波前传感和多平面同时成像。其光学原理可以用迂回相位效应解释，这种迂回相位效应理论上可以获得任意形式的光波前调制，比如生成衍射光学元件、计算机全息以及合成孔径阵列的相位调制等。二次弯曲光栅（quadratically distorted grating ，qd-grating）可以通过特殊的相位调制使得不同的衍射级次具有不同的聚焦能力，将其引入到光学成像系统中时，将二次弯曲光栅与成像透镜搭配使用，便可以实现将空间上多个平面的物体于同一平面上同时成像。                                                                          A curved grating (distorted grating) is a diffractive optical element, usually used to realize wavefront sensing and multi-plane simultaneous imaging. The optical principle can be explained by the circuitous phase effect. This circuitous phase effect can theoretically obtain any form of light wavefront modulation, such as generating diffractive optical elements, computer holography, and phase modulation of synthetic aperture arrays. Quadratically distorted grating grating, qd-grating) can make different diffraction orders have different focusing capabilities through special phase modulation. When it is introduced into the optical imaging system, the second-curved grating and the imaging lens can be used together to realize the space Objects on multiple planes are simultaneously imaged on the same plane. This is the one
现有技术中，可以将定制加工的衍射光学元件作为二次弯曲光栅，依据需求定制该二次弯曲光栅为振幅型和相位型，此种二次弯曲光栅价格便宜，但参数固定无法调整。还可以将空间光调整器作为二次弯曲光栅，纯相位的液晶空间光调制器可以作为相位型二次弯曲光栅，振幅型数字微镜阵列可以作为振幅型二次弯曲光栅，这两种空间光调制器的参数均可调并且可以实时控制，但是价格都比较昂贵。In the prior art, a custom-processed diffractive optical element can be used as a quadratic curved grating, and the quadratic curved grating can be customized to be an amplitude type and a phase type according to requirements. This type of quadratic curved grating is cheap, but the parameters are fixed and cannot be adjusted. The spatial light modulator can also be used as a second-curved grating, a pure phase liquid crystal spatial light modulator can be used as a phase-type second-curved grating, and an amplitude-type digital micro-mirror array can be used as an amplitude-type second-curved grating. The parameters of the modulator are adjustable and can be controlled in real time, but the price is relatively expensive.
技术问题technical problem
本发明的目的在于提供一种液晶光栅装置，可作为二次弯曲光栅使用，且产品成本较低。The purpose of the present invention is to provide a liquid crystal grating device, which can be used as a second-curved grating and has a lower product cost.
本发明的另一目的在于提供一种液晶显示装置，包括可以作为二次弯曲光栅使用的液晶光栅装置，产品成本低。Another object of the present invention is to provide a liquid crystal display device, including a liquid crystal grating device that can be used as a secondary curved grating, with low product cost.
技术解决方案Technical solutions
为实现上述目的，本发明提供一种液晶光栅装置，包括相对设置的第一基板及第二基板、设于第一基板靠近第二基板一侧的透明的第一电极层、设于第二基板靠近第一基板一侧的透明的第二电极层、设于第一电极层与第二电极层之间的液晶层以及设于第一基板远离第二基板一侧的第一偏光片；In order to achieve the above-mentioned object, the present invention provides a liquid crystal grating device, which includes a first substrate and a second substrate disposed oppositely, a transparent first electrode layer disposed on the side of the first substrate close to the second substrate, and a transparent first electrode layer disposed on the second substrate. A transparent second electrode layer on the side close to the first substrate, a liquid crystal layer provided between the first electrode layer and the second electrode layer, and a first polarizer provided on the side of the first substrate away from the second substrate;
所述第一电极层包括间隔设置的多个第一电极组，每一第一电极组包括间隔设置的多个第一条形电极，每一第一条形电极均为圆弧状，多个第一条形电极的圆心重合。The first electrode layer includes a plurality of first electrode groups arranged at intervals, and each first electrode group includes a plurality of first strip-shaped electrodes arranged at intervals, each of the first strip-shaped electrodes is arc-shaped, and a plurality of The centers of the first strip electrodes coincide.
所述的液晶光栅装置还包括设于第二基板远离第一基板一侧的第二偏光片。The liquid crystal grating device further includes a second polarizer arranged on a side of the second substrate away from the first substrate.
所述第一偏光片的偏振方向与第二偏光片的偏振方向垂直。The polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer.
所述第二电极层整面覆盖第二基板。The entire surface of the second electrode layer covers the second substrate.
所述第二电极层包括间隔设置的多个第二电极组，每一第二电极组包括间隔设置的多个第二条形电极，每一第二条形电极与一第一条形电极对应，每一第二条形电极在第一基板上的投影与对应的第一条形电极重合。The second electrode layer includes a plurality of second electrode groups arranged at intervals, each second electrode group includes a plurality of second strip electrodes arranged at intervals, and each second strip electrode corresponds to a first strip electrode , The projection of each second strip electrode on the first substrate coincides with the corresponding first strip electrode.
任意两个第一电极组中的第一条形电极的数量不同。The number of first strip electrodes in any two first electrode groups is different.
对于任意两个第一电极组，靠近多个第一条形电极的圆心的第一电极组中第一条形电极的数量大于远离多个第一条形电极的圆心的第一电极组中第一条形电极的数量。For any two first electrode groups, the number of first strip electrodes in the first electrode group close to the center of the plurality of first strip electrodes is greater than the number of first electrode groups in the first electrode group far from the center of the plurality of first strip electrodes The number of strip electrodes.
每一第一条形电极接入驱动电压，同一第一电极组中的第一条形电极接入的驱动电压相同。Each first strip electrode is connected to a driving voltage, and the first strip electrodes in the same first electrode group are connected to the same driving voltage.
任意两个相邻的第一条形电极之间的间距相等；多个第一条形电极的宽度相等；The distance between any two adjacent first strip electrodes is equal; the width of the multiple first strip electrodes is equal;
所述第一电极层及第二电极层的材料均为ITO。The materials of the first electrode layer and the second electrode layer are both ITO.
本发明还提供一种液晶显示装置，包括上述的液晶光栅装置。The present invention also provides a liquid crystal display device, including the above-mentioned liquid crystal grating device.
有益效果Beneficial effect
本发明的有益效果：本发明的液晶光栅装置包括相对设置的第一基板及第二基板、设于第一基板靠近第二基板一侧的透明的第一电极层、设于第二基板靠近第一基板一侧的透明的第二电极层、设于第一电极层与第二电极层之间的液晶层以及设于第一基板远离第二基板一侧的第一偏光片，第一电极层包括间隔设置的多个第一电极组，每一第一电极组包括间隔设置的多个第一条形电极，每一第一条形电极均为圆弧状，多个第一条形电极的圆心重合，本发明的液晶光栅装置能够作为二次弯曲光栅使用，包括振幅型和相位型，通过调节向第一条形电极施加的驱动电压能够实现光栅周期、占空比、透过率和相位差的调节，且产品成本较低。本发明的液晶显示装置包括可以作为二次弯曲光栅使用的液晶光栅装置，产品成本低。The beneficial effects of the present invention: the liquid crystal grating device of the present invention includes a first substrate and a second substrate that are opposed to each other, a transparent first electrode layer provided on the side of the first substrate close to the second substrate, and a transparent first electrode layer provided on the second substrate close to the second substrate. A transparent second electrode layer on one side of the substrate, a liquid crystal layer provided between the first electrode layer and the second electrode layer, and a first polarizer provided on the side of the first substrate away from the second substrate, the first electrode layer It includes a plurality of first electrode groups arranged at intervals, and each first electrode group includes a plurality of first strip electrodes arranged at intervals, each of the first strip electrodes is arc-shaped, and the The center of the circle coincides, the liquid crystal grating device of the present invention can be used as a secondary curved grating, including amplitude type and phase type. The grating period, duty ratio, transmittance and phase can be realized by adjusting the driving voltage applied to the first strip electrode. Poor adjustment and lower product cost. The liquid crystal display device of the present invention includes a liquid crystal grating device that can be used as a secondary curved grating, and the product cost is low.
附图说明Description of the drawings
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，然而附图仅供参考与说明用，并非用来对本发明加以限制。In order to further understand the features and technical content of the present invention, please refer to the following detailed description and accompanying drawings of the present invention. However, the accompanying drawings are for reference and illustration only, and are not used to limit the present invention.
附图中，In the attached picture,
图1为本发明的液晶光栅装置的第一实施例的剖视示意图； 1 is a schematic cross-sectional view of the first embodiment of the liquid crystal grating device of the present invention;
图2为本发明的液晶光栅装置的第一基板及第一电极层的俯视示意图； 2 is a schematic top view of the first substrate and the first electrode layer of the liquid crystal grating device of the present invention;
图3为本发明的液晶光栅装置的第二实施例的剖视示意图；3 is a schematic cross-sectional view of a second embodiment of the liquid crystal grating device of the present invention;
图4为本发明的液晶光栅装置的第三实施例的剖视示意图。4 is a schematic cross-sectional view of the third embodiment of the liquid crystal grating device of the present invention.
本发明的实施方式Embodiments of the invention
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。In order to further explain the technical means adopted by the present invention and its effects, the following describes in detail the preferred embodiments of the present invention and the accompanying drawings.
请参阅图Please refer to the figure 11 ，本发明的第一实施例的液晶光栅装置为振幅调节型液晶光栅装置，包括相对设置的第一基板, The liquid crystal grating device of the first embodiment of the present invention is an amplitude-adjustable liquid crystal grating device, including first substrates disposed oppositely 1010 及第二基板And the second substrate 2020 、设于第一基板, Located on the first substrate 1010 靠近第二基板Close to the second substrate 2020 一侧的透明的第一电极层Transparent first electrode layer on one side 3030 、设于第二基板, Located on the second substrate 2020 靠近第一基板Close to the first substrate 1010 一侧的透明的第二电极层Transparent second electrode layer on one side 4040 、设于第一电极层, Located on the first electrode layer 3030 与第二电极层And the second electrode layer 4040 之间的液晶层Liquid crystal layer 5050 、设于第一基板, Located on the first substrate 1010 远离第二基板Away from the second substrate 2020 一侧的第一偏光片First polarizer on one side 6060 、设于第二基板, Located on the second substrate 2020 远离第一基板Away from the first substrate 1010 一侧的第二偏光片Second polarizer on one side 7070 。请参阅图. Please refer to the figure 11 及图And figure 22 ，所述第一电极层, The first electrode layer 3030 包括间隔设置的多个第一电极组Including a plurality of first electrode groups arranged at intervals 3131 ，每一第一电极组, Each first electrode group 3131 包括间隔设置的多个第一条形电极Including a plurality of first strip electrodes arranged at intervals 311311 ，每一第一条形电极, Each first strip electrode 311311 均为圆弧状，多个第一条形电极All are arc-shaped, with multiple first strip electrodes 311311 的圆心重合。The centers of the circles coincide.
具体地，所述第一偏光片Specifically, the first polarizer 6060 的偏振方向与第二偏光片The polarization direction and the second polarizer 7070 的偏振方向垂直。The polarization direction is vertical.
具体地，请参阅图Specifically, please refer to the figure 11 ，在本发明的第一实施例中，所述第二电极层, In the first embodiment of the present invention, the second electrode layer 4040 整面覆盖第二基板Cover the entire surface of the second substrate 2020 。.
具体地，任意两个第一电极组Specifically, any two first electrode groups 3131 中的第一条形电极The first strip electrode in 311311 的数量不同。The number is different.
具体地，在图Specifically, in the figure 11 所示的实施例中，对于任意两个第一电极组In the illustrated embodiment, for any two first electrode groups 3131 ，靠近多个第一条形电极, Close to multiple first strip electrodes 311311 的圆心的第一电极组The first electrode group 3131 中第一条形电极The first strip electrode 311311 的数量大于远离多个第一条形电极The number is greater than the number of first strip electrodes far away 311311 的圆心的第一电极组The first electrode group 3131 中第一条形电极The first strip electrode 311311 的数量。quantity.
具体地，每一第一条形电极Specifically, each first strip electrode 311311 接入驱动电压，所述第二电极层Connect the driving voltage, the second electrode layer 4040 接入公共电压，从而对液晶层Access to the common voltage, so as to the liquid crystal layer 5050 中的液晶分子进行驱动，使得该液晶光栅装置可以作为二次弯曲光栅使用。进一步地，同一第一电极组The liquid crystal molecules in the device are driven, so that the liquid crystal grating device can be used as a secondary bending grating. Further, the same first electrode group 3131 中的第一条形电极The first strip electrode in 311311 接入的驱动电压相同。The connected drive voltage is the same.
具体地，在图Specifically, in the figure 11 所示的实施例中，任意两个相邻的第一条形电极In the embodiment shown, any two adjacent first strip electrodes 311311 之间的间距相等。多个第一条形电极The spacing between is equal. Multiple first strip electrodes 311311 的宽度相等。The widths are equal.
具体地，所述第一电极层Specifically, the first electrode layer 3030 及第二电极层And the second electrode layer 4040 的材料均为透明电极材料。优选地，所述第一电极层The materials are all transparent electrode materials. Preferably, the first electrode layer 3030 及第二电极层And the second electrode layer 4040 的材料均为氧化铟锡（The materials are all indium tin oxide ( ITOITO ）。).
需要说明的是，本发明的第一实施例的液晶光栅装置中在工作时，每一第一条形电极It should be noted that, in the liquid crystal grating device of the first embodiment of the present invention, each first strip electrode 311311 接入驱动电压，第二电极层Connect the driving voltage, the second electrode layer 4040 接入公共电压，从而能够对液晶层Access to a common voltage, so that the liquid crystal layer 5050 中的液晶分子进行驱动，使得该液晶光栅装置作为二次弯曲光栅使用实现将空间上多个平面的物体于同一平面上同时成像，具体地，同一第一电极组The liquid crystal molecules in the liquid crystal molecules are driven, so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane, specifically, the same first electrode group 3131 中的第一条形电极The first strip electrode in 311311 接入的驱动电压相同，通过对不同第一电极组The connected driving voltage is the same, through the different first electrode groups 3131 中的第一条形电极The first strip electrode in 311311 接入不同的驱动电压，使得通过液晶层Different drive voltages are connected to make the liquid crystal layer 5050 中对应不同第一电极组Corresponding to different first electrode groups 3131 的区域的偏振光具有不同的相位，并且由于第一偏光片The polarized light in the area has a different phase, and because of the first polarizer 6060 及第二偏光片And second polarizer 7070 的偏振方向相互垂直，因此可以控制液晶光栅装置对应不同第一电极组The polarization directions are perpendicular to each other, so the liquid crystal grating device can be controlled to correspond to different first electrode groups 3131 的区域的透过率。该液晶光栅装置能够通过调节第一条形电极The transmittance of the area. The liquid crystal grating device can adjust the first strip electrode 311311 接入的驱动电压实现光栅周期、占空比、透过率及相位差的调节，相比于现有的定制加工的衍射光学元件，本发明能够控制各个衍射级次的聚焦能力以及各个衍射级次的光能量分配（例如将相位差调节到The connected driving voltage realizes the adjustment of grating period, duty cycle, transmittance and phase difference. Compared with the existing custom-made diffractive optical elements, the present invention can control the focusing ability of each diffraction order and each diffraction order Second light energy distribution (for example, adjusting the phase difference to 0.6380.638 π时，衍射级次为When π, the diffraction order is 00 级和正负Level and positive and negative 11 级的光能量近似相等），相比于现有的空间光调制器，本发明的结构简单，成本较低，同时，在不需要起到二次弯曲光栅作用时，可以通过调节第一条形电极Compared with the existing spatial light modulator, the present invention has a simple structure and lower cost. At the same time, when it does not need to play the role of a second curved grating, the first strip shape can be adjusted. electrode 311311 接入的驱动电压使得该液晶光栅装置现将空间上多个平面的物体分别于多个平面上成像，从而不用采取机械运动去移除液晶光栅装置就可以实现多平面成像和单平面成像的切换。The connected driving voltage enables the liquid crystal grating device to image objects in multiple planes in space on multiple planes respectively, so that the switching between multi-plane imaging and single-plane imaging can be realized without mechanical movement to remove the liquid crystal grating device. .
请参阅图Please refer to the figure 33 ，本发明的第二实施例的液晶光栅装置与上述第一实施例的区别在于，第二基板The difference between the liquid crystal grating device of the second embodiment of the present invention and the above-mentioned first embodiment is that the second substrate 2020 设于第二基板Set on the second substrate 2020 远离第一基板Away from the first substrate 1010 一侧不再设置偏光片，从而，本发明的第二实施例的液晶光栅装置为相位调节型液晶光栅装置，其余均与第一实时相同，在此不再赘述。本发明的第二实施例的液晶光栅同样可以通过调节第一条形电极A polarizer is no longer provided on one side. Therefore, the liquid crystal grating device of the second embodiment of the present invention is a phase-adjustable liquid crystal grating device, and the rest are the same as the first real time, and will not be repeated here. The liquid crystal grating of the second embodiment of the present invention can also be adjusted by adjusting the first strip electrode 311311 接入的驱动电压实现光栅周期、占空比、透过率及相位差的调节，从而控制各个衍射级次的聚焦能力以及各个衍射级次的光能量分配。The connected driving voltage realizes the adjustment of grating period, duty ratio, transmittance and phase difference, thereby controlling the focusing ability of each diffraction order and the light energy distribution of each diffraction order.
请参阅图Please refer to the figure 44 ，本发明的第三实施例的液晶光栅装置与上述第一实施例的区别在于，所述第二电极层The difference between the liquid crystal grating device of the third embodiment of the present invention and the above-mentioned first embodiment is that the second electrode layer 4040 不再为整面结构，而是包括间隔设置的多个第二电极组It is no longer a whole surface structure, but includes a plurality of second electrode groups arranged at intervals 4141 ，每一第二电极组, Each second electrode group 4141 包括间隔设置的多个第二条形电极Including a plurality of second strip electrodes arranged at intervals 411411 ，每一第二条形电极, Each second strip electrode 411411 与一第一条形电极With a first strip electrode 311311 对应，每一第二条形电极Correspondingly, every second strip electrode 411411 在第一基板On the first substrate 1010 上的投影与对应的第一条形电极The projection on the corresponding first strip electrode 311311 重合，从而本发明的第三实施例在工作时，每一第一条形电极Overlap, so that when the third embodiment of the present invention is working, each first strip electrode 311311 接入驱动电压，每一第二条形电极Connect the driving voltage, each second strip electrode 411411 接入公共电压，从而能够对液晶层Access to a common voltage, so that the liquid crystal layer 5050 中的液晶分子进行驱动，使得该液晶光栅装置作为二次弯曲光栅使用实现将空间上多个平面的物体于同一平面上同时成像，通过调节第一条形电极The liquid crystal molecules in the liquid crystal molecules are driven so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane. By adjusting the first strip electrode 311311 接入的驱动电压及第二条形电极Connected driving voltage and second strip electrode 411411 接入的公共电压能够实现对液晶层The connected public voltage can realize the 5050 不同区域两侧的电压进行更精细的控制，从而更精细地对光栅周期、占空比、透过率及相位差进行调节。The voltages on both sides of different areas are controlled more precisely, so that the grating period, duty cycle, transmittance and phase difference can be adjusted more finely.
基于同一发明构思，本发明还提供一种液晶显示装置，包括上述的液晶光栅装置，在此不再对液晶光栅装置的结构进行重复性描述。Based on the same inventive concept, the present invention also provides a liquid crystal display device including the above-mentioned liquid crystal grating device, and the structure of the liquid crystal grating device will not be described repeatedly here.
需要说明的是，本发明的液晶显示装置包括上述的液晶光栅装置，工作时，使得液晶光栅装置的每一第一条形电极It should be noted that the liquid crystal display device of the present invention includes the above-mentioned liquid crystal grating device. When in operation, each first strip electrode of the liquid crystal grating device is 311311 接入驱动电压，第二电极层Connect the driving voltage, the second electrode layer 4040 接入公共电压，从而能够对液晶层Access to a common voltage, so that the liquid crystal layer 5050 中的液晶分子进行驱动，使得该液晶光栅装置作为二次弯曲光栅使用实现将空间上多个平面的物体于同一平面上同时成像，通过调节第一条形电极The liquid crystal molecules in the liquid crystal molecules are driven so that the liquid crystal grating device can be used as a secondary curved grating to realize simultaneous imaging of objects in multiple planes in space on the same plane. By adjusting the first strip electrode 311311 接入的驱动电压实现光栅周期、占空比、透过率及相位差的调节，相比于现有的定制加工的衍射光学元件，本发明中的液晶光栅装置能够控制各个衍射级次的聚焦能力以及各个衍射级次的光能量分配，相比于现有的空间光调制器，本发明中的液晶光栅装置的结构简单，从而使得本发明的液晶显示装置在具有可以作为二次弯曲光栅使用的液晶光栅装置的基础上，整体的结构简单，成本较低。The connected driving voltage realizes the adjustment of grating period, duty ratio, transmittance and phase difference. Compared with the existing custom-made diffractive optical elements, the liquid crystal grating device of the present invention can control the focusing of each diffraction order Compared with the existing spatial light modulator, the structure of the liquid crystal grating device of the present invention is simple, so that the liquid crystal display device of the present invention can be used as a second-curved grating. Based on the liquid crystal grating device, the overall structure is simple and the cost is low.
综上所述，本发明的液晶光栅装置包括相对设置的第一基板及第二基板、设于第一基板靠近第二基板一侧的透明的第一电极层、设于第二基板靠近第一基板一侧的透明的第二电极层、设于第一电极层与第二电极层之间的液晶层以及设于第一基板远离第二基板一侧的第一偏光片，第一电极层包括间隔设置的多个第一电极组，每一第一电极组包括间隔设置的多个第一条形电极，每一第一条形电极均为圆弧状，多个第一条形电极的圆心重合，本发明的液晶光栅装置能够作为二次弯曲光栅使用，包括振幅型和相位型，通过调节向第一条形电极施加的驱动电压能够实现光栅周期、占空比、透过率和相位差的调节，且产品成本较低。本发明的液晶显示装置包括可以作为二次弯曲光栅使用的液晶光栅装置，产品成本低。In summary, the liquid crystal grating device of the present invention includes a first substrate and a second substrate that are opposed to each other, a transparent first electrode layer provided on the side of the first substrate close to the second substrate, and a transparent first electrode layer provided on the second substrate close to the first substrate. The transparent second electrode layer on the side of the substrate, the liquid crystal layer provided between the first electrode layer and the second electrode layer, and the first polarizer provided on the side of the first substrate away from the second substrate. The first electrode layer includes A plurality of first electrode groups are arranged at intervals, each first electrode group includes a plurality of first strip electrodes arranged at intervals, each first strip electrode is arc-shaped, and the center of the plurality of first strip electrodes Overlapping, the liquid crystal grating device of the present invention can be used as a secondary curved grating, including amplitude type and phase type. The grating period, duty ratio, transmittance and phase difference can be realized by adjusting the driving voltage applied to the first strip electrode The adjustment, and the product cost is lower. The liquid crystal display device of the present invention includes a liquid crystal grating device that can be used as a secondary curved grating, and the product cost is low.
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权利要求的保护范围。As mentioned above, for those of ordinary skill in the art, various other corresponding changes and modifications can be made according to the technical solutions and technical ideas of the present invention, and all these changes and modifications shall fall within the protection scope of the claims of the present invention. .

Claims (18)

  1. 一种液晶光栅装置，包括相对设置的第一基板及第二基板、设于第一基板靠近第二基板一侧的透明的第一电极层、设于第二基板靠近第一基板一侧的透明的第二电极层、设于第一电极层与第二电极层之间的液晶层以及设于第一基板远离第二基板一侧的第一偏光片；A liquid crystal grating device includes a first substrate and a second substrate that are opposed to each other, a transparent first electrode layer provided on the side of the first substrate close to the second substrate, and a transparent electrode layer provided on the side of the second substrate close to the first substrate. The second electrode layer, the liquid crystal layer arranged between the first electrode layer and the second electrode layer, and the first polarizer arranged on the side of the first substrate away from the second substrate;
    所述第一电极层包括间隔设置的多个第一电极组，每一第一电极组包括间隔设置的多个第一条形电极，每一第一条形电极均为圆弧状，多个第一条形电极的圆心重合。The first electrode layer includes a plurality of first electrode groups arranged at intervals, and each first electrode group includes a plurality of first strip-shaped electrodes arranged at intervals, each of the first strip-shaped electrodes is arc-shaped, and a plurality of The centers of the first strip electrodes coincide.
  2. 如权利要求1所述的液晶光栅装置，还包括设于第二基板远离第一基板一侧的第二偏光片。5. The liquid crystal grating device of claim 1, further comprising a second polarizer disposed on a side of the second substrate away from the first substrate.
  3. 如权利要求2所述的液晶光栅装置，其中，所述第一偏光片的偏振方向与第二偏光片的偏振方向垂直。3. The liquid crystal grating device of claim 2, wherein the polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer.
  4. 如权利要求1所述的液晶光栅装置，其中，所述第二电极层整面覆盖第二基板。8. The liquid crystal grating device of claim 1, wherein the entire surface of the second electrode layer covers the second substrate.
  5. 如权利要求1所述的液晶光栅装置，其中，所述第二电极层包括间隔设置的多个第二电极组，每一第二电极组包括间隔设置的多个第二条形电极，每一第二条形电极与一第一条形电极对应，每一第二条形电极在第一基板上的投影与对应的第一条形电极重合。7. The liquid crystal grating device of claim 1, wherein the second electrode layer comprises a plurality of second electrode groups arranged at intervals, and each second electrode group comprises a plurality of second strip electrodes arranged at intervals, each The second strip-shaped electrode corresponds to a first strip-shaped electrode, and the projection of each second strip-shaped electrode on the first substrate coincides with the corresponding first strip-shaped electrode.
  6. 如权利要求1所述的液晶光栅装置，其中，任意两个第一电极组中的第一条形电极的数量不同。7. The liquid crystal grating device of claim 1, wherein the number of the first strip-shaped electrodes in any two first electrode groups is different.
  7. 如权利要求6所述的液晶光栅装置，其中，对于任意两个第一电极组，靠近多个第一条形电极的圆心的第一电极组中第一条形电极的数量大于远离多个第一条形电极的圆心的第一电极组中第一条形电极的数量。7. The liquid crystal grating device of claim 6, wherein, for any two first electrode groups, the number of first strip electrodes in the first electrode group close to the center of the plurality of first strip electrodes is greater than that of the first electrode group farther away from the plurality of first electrode groups. The number of first strip electrodes in the first electrode group at the center of the strip electrode.
  8. 如权利要求1所述的液晶光栅装置，其中，每一第一条形电极接入驱动电压，同一第一电极组中的第一条形电极接入的驱动电压相同。7. The liquid crystal grating device of claim 1, wherein each first strip electrode is connected to a driving voltage, and the first strip electrodes in the same first electrode group are connected to the same driving voltage.
  9. 如权利要求1所述的液晶光栅装置，其中，任意两个相邻的第一条形电极之间的间距相等；多个第一条形电极的宽度相等；3. The liquid crystal grating device of claim 1, wherein the distance between any two adjacent first strip electrodes is equal; the width of the plurality of first strip electrodes is equal;
    所述第一电极层及第二电极层的材料均为ITO。The materials of the first electrode layer and the second electrode layer are both ITO.
  10. 一种液晶显示装置，包括液晶光栅装置；A liquid crystal display device including a liquid crystal grating device;
    所述液晶光栅装置，包括相对设置的第一基板及第二基板、设于第一基板靠近第二基板一侧的透明的第一电极层、设于第二基板靠近第一基板一侧的透明的第二电极层、设于第一电极层与第二电极层之间的液晶层以及设于第一基板远离第二基板一侧的第一偏光片；The liquid crystal grating device includes a first substrate and a second substrate disposed oppositely, a transparent first electrode layer disposed on the side of the first substrate close to the second substrate, and a transparent first electrode layer disposed on the side of the second substrate close to the first substrate. The second electrode layer, the liquid crystal layer arranged between the first electrode layer and the second electrode layer, and the first polarizer arranged on the side of the first substrate away from the second substrate;
    所述第一电极层包括间隔设置的多个第一电极组，每一第一电极组包括间隔设置的多个第一条形电极，每一第一条形电极均为圆弧状，多个第一条形电极的圆心重合。The first electrode layer includes a plurality of first electrode groups arranged at intervals, and each first electrode group includes a plurality of first strip-shaped electrodes arranged at intervals, each of the first strip-shaped electrodes is arc-shaped, and a plurality of The centers of the first strip electrodes coincide.
  11. 如权利要求10As in claim 10 所述的液晶显示装置，其中，所述液晶光栅装置还包括设于第二基板远离第一基板一侧的第二偏光片。In the liquid crystal display device, the liquid crystal grating device further includes a second polarizer disposed on a side of the second substrate away from the first substrate.
  12. 如权利要求11As in claim 11 所述的液晶显示装置，其中，所述第一偏光片的偏振方向与第二偏光片的偏振方向垂直。In the liquid crystal display device, the polarization direction of the first polarizer is perpendicular to the polarization direction of the second polarizer.
  13. 如权利要求10As in claim 10 所述的液晶显示装置，其中，所述第二电极层整面覆盖第二基板。In the liquid crystal display device, the entire surface of the second electrode layer covers the second substrate.
  14. 如权利要求10As in claim 10 所述的液晶显示装置，其中，所述第二电极层包括间隔设置的多个第二电极组，每一第二电极组包括间隔设置的多个第二条形电极，每一第二条形电极与一第一条形电极对应，每一第二条形电极在第一基板上的投影与对应的第一条形电极重合。In the liquid crystal display device, the second electrode layer includes a plurality of second electrode groups arranged at intervals, and each second electrode group includes a plurality of second strip-shaped electrodes arranged at intervals, each of the second strips The electrode corresponds to a first strip-shaped electrode, and the projection of each second strip-shaped electrode on the first substrate coincides with the corresponding first strip-shaped electrode.
  15. 如权利要求10As in claim 10 所述的液晶显示装置，其中，任意两个第一电极组中的第一条形电极的数量不同。In the liquid crystal display device, the number of the first strip electrodes in any two first electrode groups is different.
  16. 如权利要求15As in claim 15 所述的液晶显示装置，其中，对于任意两个第一电极组，靠近多个第一条形电极的圆心的第一电极组中第一条形电极的数量大于远离多个第一条形电极的圆心的第一电极组中第一条形电极的数量。The liquid crystal display device, wherein, for any two first electrode groups, the number of first strip electrodes in the first electrode group close to the center of the plurality of first strip electrodes is greater than that far away from the plurality of first strip electrodes The number of first strip electrodes in the first electrode group at the center of the circle.
  17. 如权利要求10As in claim 10 所述的液晶显示装置，其中，每一第一条形电极接入驱动电压，同一第一电极组中的第一条形电极接入的驱动电压相同。In the liquid crystal display device, each first strip electrode is connected to a driving voltage, and the first strip electrodes in the same first electrode group are connected to the same driving voltage.
  18. 如权利要求10As in claim 10 所述的液晶显示装置，其中，任意两个相邻的第一条形电极之间的间距相等；多个第一条形电极的宽度相等；In the liquid crystal display device, the distance between any two adjacent first strip electrodes is equal; the width of the plurality of first strip electrodes is equal;
    所述第一电极层及第二电极层的材料均为ITOThe materials of the first electrode layer and the second electrode layer are both ITO 。.
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