WO2018040755A1 - 一种液晶棱镜及其制作方法、显示装置 - Google Patents

一种液晶棱镜及其制作方法、显示装置 Download PDF

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Publication number
WO2018040755A1
WO2018040755A1 PCT/CN2017/092599 CN2017092599W WO2018040755A1 WO 2018040755 A1 WO2018040755 A1 WO 2018040755A1 CN 2017092599 W CN2017092599 W CN 2017092599W WO 2018040755 A1 WO2018040755 A1 WO 2018040755A1
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Prior art keywords
liquid crystal
isolation structure
substrate
prism
electrode
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PCT/CN2017/092599
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English (en)
French (fr)
Inventor
王海燕
李忠孝
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京东方科技集团股份有限公司
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Priority to US15/577,794 priority Critical patent/US10884262B2/en
Publication of WO2018040755A1 publication Critical patent/WO2018040755A1/zh

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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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • 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
    • 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
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode

Definitions

  • the present disclosure relates to the field of display technologies, and in particular, to a liquid crystal prism, a manufacturing method thereof, and a display device.
  • the existing naked-eye 3D display device is composed of a display panel and a grating, wherein the grating includes a plurality of grating units, and the grating is disposed in front of the display panel in a certain manner.
  • the light in the naked-eye 3D display device passes through the grating, and after being imaged by the grating, the human eyes can see different visual images, thereby generating a stereoscopic feeling.
  • a grating unit for a naked-eye 3D display device is realized by means of a liquid crystal prism (LC lens).
  • Embodiments of the present disclosure provide a liquid crystal prism, a manufacturing method thereof, and a display device for forming a liquid crystal prism having an ideal topography, thereby improving display performance of a display device.
  • a liquid crystal prism may include a first substrate and a second substrate, and a plurality of prism units are disposed between the first substrate and the second substrate, each of the prism units including a first electrode and a second electrode group, wherein the The two electrode group includes a plurality of second electrodes, a liquid crystal layer is disposed between the first electrode and the second electrode group, and a transparent insulating isolation structure is disposed between two adjacent prism units, and the isolation is The refractive index of the structure is the same as the long-axis refractive index of the liquid crystal molecules in the liquid crystal layer.
  • a transparent insulating isolation structure is disposed between two adjacent prism units, and the refractive index of the isolation structure is the same as the long-axis refractive index of the liquid crystal molecules in the liquid crystal layer, and therefore, the isolation structure
  • the liquid crystal molecules at the position where the isolation structure is located in the related art can be replaced without filling the liquid crystal molecules in the position where the isolation structure is located.
  • the liquid crystal prism can have a desired topography, so that the naked-eye 3D display device fabricated using such a liquid crystal prism does not exhibit stray light and crosstalk, and thus the display effect of the naked-eye 3D display device can be improved.
  • a method for preparing a liquid crystal prism includes:
  • each of the prism units includes a first electrode and a second electrode group
  • the second electrode group includes a plurality of second electrodes
  • a liquid crystal layer is disposed between the first electrode and the second electrode group
  • a transparent insulating isolation structure is disposed between two adjacent prism units, and a refractive index of the isolation structure is The long-axis refractive index of the liquid crystal molecules in the liquid crystal layer is the same.
  • an isolation structure is disposed between adjacent two prism units, and a refractive index of the isolation structure and a long-axis refractive index of liquid crystal molecules in the liquid crystal layer
  • the isolation structure can replace the liquid crystal molecules at the position where the isolation structure is in the related art without filling the liquid crystal molecules in the position where the isolation structure is located.
  • the liquid crystal prism can have an ideal topography, so that the naked-eye 3D display device fabricated by the liquid crystal prism does not exhibit stray light and crosstalk, and thus the display effect of the naked-eye 3D display device can be improved.
  • a display device in yet another aspect of the present disclosure, includes a liquid crystal prism in any of the embodiments described herein.
  • FIG. 1 is a schematic structural view of a liquid crystal prism in the related art
  • FIG. 2 is a schematic structural view of a liquid crystal prism provided by an embodiment of the present disclosure
  • FIG. 3 is a schematic view showing a topography of a liquid crystal prism provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic structural view of another liquid crystal prism provided by an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram showing an equivalent configuration of another liquid crystal prism provided by an embodiment of the present disclosure
  • FIG. 6 is a schematic view showing a display device according to an embodiment of the present disclosure
  • FIG. 7 shows a schematic flow chart of a method for preparing a liquid crystal prism provided by an embodiment of the present disclosure
  • Fig. 8 shows a schematic flow chart of a method of forming a plurality of prism units.
  • the liquid crystal prism may include an upper substrate, a lower substrate, an upper electrode disposed on the upper substrate, a plurality of strip electrodes disposed on the lower substrate, and a liquid crystal layer between the plurality of strip electrodes and the upper electrode.
  • a driving voltage is applied to the upper electrode and the plurality of strip electrodes to form a gradient electric field that causes liquid crystals between the upper substrate and the lower substrate to have different directions of rotation, thereby causing the liquid crystal prism to function as a grating
  • the adjacent two strip electrodes interfere with each other, resulting in disorder of the deflection direction of the liquid crystal molecules in the liquid crystal layer.
  • FIG. 1 due to the interference between adjacent strip electrodes, liquid crystal is wrong, and a liquid crystal prism having a desired morphology cannot be formed. Therefore, a naked-eye 3D display device fabricated using a liquid crystal prism is prone to stray light and crosstalk. The phenomenon of the naked eye 3D display device is poor.
  • a liquid crystal prism a method of fabricating the same, and a display device capable of forming a liquid crystal prism having an ideal topography, thereby improving display performance of the display device.
  • a liquid crystal prism which, as shown in FIG. 2, may include a first substrate 1 and a second substrate 2.
  • a plurality of prism units 3 may be disposed between the first substrate 1 and the second substrate 2.
  • Each of the prism units 3 may include a first electrode 31 and a second electrode group 32.
  • the second electrode group 32 may include a plurality of second electrodes 321.
  • a liquid crystal layer 33 is disposed between the first electrode 31 and the second electrode group 32.
  • a transparent insulating isolation structure 4 may be disposed between the adjacent two prism units 3, and the refractive index of the isolation structure 4 is the same as the long-axis refractive index of the liquid crystal molecules in the liquid crystal layer 33.
  • the first electrode may be disposed on the first substrate 1 and the plurality of second electrodes 321 may be disposed on the second substrate 2.
  • a driving voltage may be applied to the first electrode 31 and the second electrode group 32 to form a gradient electric field.
  • the gradient electric field can make the liquid crystal molecules in the liquid crystal layer 33 have different rotation directions, so that the liquid crystal prisms have a grating function to realize naked-eye 3D display.
  • an isolation structure may be disposed between adjacent two prism units in each row, and an isolation structure may be disposed between adjacent prism units in each column.
  • the transparent insulating isolation structure 4 is disposed between the adjacent two prism units 3, and the refractive index of the isolation structure 4 is the same as the long-axis refractive index of the liquid crystal molecules in the liquid crystal layer 33, Therefore, the isolation structure 4 can replace the liquid crystal molecules at the position where the isolation structure 4 is located, thereby eliminating the need to fill the liquid crystal molecules at the position where the isolation structure 4 is located.
  • the deflection direction of the liquid crystal molecules at the position where the isolation structure 4 is located can be prevented from being disordered, thereby preventing the liquid crystal from being wrong. Therefore, a liquid crystal prism having an ideal morphology can be formed. In this manner, the naked-eye 3D display device fabricated using the liquid crystal prism does not exhibit stray light and crosstalk, and thus the display effect of the naked-eye 3D display device can be improved.
  • two specific locations for the isolation structures in the liquid crystal prism structure can be provided in embodiments of the present disclosure.
  • the isolation structure 4 may be disposed on the second substrate 1.
  • the height of the isolation structure 4 may be the thickness of the liquid crystal layer.
  • the direction of the height of the isolation structure 4 coincides with the direction of the thickness of the liquid crystal layer 33.
  • the isolation structure 4 When the isolation structure 4 is disposed on the second substrate, the isolation structure 4 does not need to penetrate the entire thickness of the liquid crystal layer 33, and the isolation structure 4 has the above ratio of the thickness of the liquid crystal layer, which can replace the isolation structure 4 of the related art.
  • the role of liquid crystal molecules at the position As shown in FIG.
  • the shape of the prism (shown by the dotted line in the figure is the ideal shape of the liquid crystal prism) is basically the same, which makes the naked-eye 3D display device fabricated by using the liquid crystal prism free from stray light and crosstalk, thereby improving the naked eye.
  • the isolation structure 4 can include a first isolation structure 41 and a second isolation structure 42.
  • the first isolation structure 41 may be disposed on the first electrode 31, and the second isolation structure 42 may be disposed on the second substrate 2.
  • the heights of the first isolation structure 41 and the second isolation structure 42 may be the height of the liquid crystal layer.
  • the height direction of the first and second isolation structures 41, 42 coincides with the thickness direction of the liquid crystal layer 33.
  • the isolation structure 4 When the isolation structure 4 is disposed on the second substrate, the height of the required isolation structure 4 is relatively high, and the process is difficult to manufacture. Therefore, the isolation structure can be simultaneously provided on the first electrode 31 and the second substrate 2. In this configuration, the heights of the first isolation structure 41 and the second isolation structure 42 need only reach the thickness of the liquid crystal layer 33. It can replace the liquid crystal molecules at the position where the isolation structure 4 is located in the related art, and therefore, the process difficulty in the manufacturing process of the liquid crystal prism can be reduced. As shown in FIG.
  • the morphology of the liquid crystal prism formed by the deflection of the liquid crystal molecules in the liquid crystal layer 33 is also the morphology of the ideal liquid crystal prism (the dotted line in the figure is The shape of the ideal liquid crystal prism is substantially the same, which makes the naked-eye 3D display device fabricated using the liquid crystal prism free from stray light and crosstalk, thereby improving the display effect of the naked-eye 3D display device.
  • the width of the isolation structure when the width of the isolation structure is less than 1 ⁇ m, the isolation structure cannot completely replace the liquid crystal molecules in the position where the isolation structure is in the prior art;
  • the width of the structure when the width of the structure is too large, when the preparation process is performed using the liquid crystal prism, the process is difficult and difficult to realize. Therefore, in the embodiment of the present disclosure, the width of the isolation structure may be 1 ⁇ m to 5 ⁇ m.
  • the long-axis refractive index of the liquid crystal molecules is generally 1.8, and those skilled in the art can select the material of the isolation structure 4 according to actual needs.
  • a resin having a higher transmittance may be selected as a forming material of the isolation structure.
  • the insulating structure is made of resin, on the one hand, the isolation structure can replace the liquid crystal molecules at the position where the isolation structure is located in the related art, and on the other hand, the transmittance of the liquid crystal prism is not affected, and the naked eye 3D made by the liquid crystal prism can be ensured. Display the display effect of the device.
  • the material of the isolation structure may be selected from the group consisting of methyl acrylate resin, ethyl acrylate resin, 2-methyl methacrylate resin or 2-methyl methacrylate resin.
  • a display device is also provided.
  • the display device 600 can include at least one liquid crystal prism 200 in accordance with the present disclosure, such as at least one liquid crystal prism of one or more embodiments disclosed above and/or in greater detail below.
  • the display device provided by the present disclosure may further include other known structures not described in detail herein, and those skilled in the art may perform settings based on needs, and details are not described herein.
  • the display device may be any product or component having a display function such as a liquid crystal panel, an electronic paper, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, or the like.
  • a display function such as a liquid crystal panel, an electronic paper, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, or the like.
  • a method for preparing a liquid crystal prism is also provided.
  • the method can prepare at least one liquid crystal prism according to the invention, such as in more detail according to above and / or below At least one liquid crystal prism of one or more embodiments disclosed.
  • at least one liquid crystal prism of one or more embodiments disclosed can be prepared.
  • the method includes the steps described below, which may be performed in a given order or in a different order. Furthermore, additional method steps not listed may be provided, and two or more or even all of the method steps may be performed at least partially simultaneously.
  • the method for preparing a liquid crystal prism may include steps S1-S2.
  • step S1 a first substrate and a second substrate may be provided.
  • step S2 a plurality of prism units may be formed between the first substrate and the second substrate, wherein each of the prism units may include a first electrode and a second electrode group, and the second electrode group may include a plurality of second a liquid crystal layer may be disposed between the first electrode and the second electrode group, and a transparent insulating isolation structure may be disposed between the adjacent two prism units, and the refractive index of the isolation structure and the liquid crystal molecules in the liquid crystal layer The long axis has the same refractive index.
  • a transparent insulating isolation structure is disposed between two adjacent prism units, and the refractive index of the isolation structure is longer than the liquid crystal molecules in the liquid crystal layer.
  • the refractive index of the axis is the same, and therefore, the isolation structure can replace the liquid crystal molecules at the position where the isolation structure is in the related art without filling the liquid crystal molecules in the position where the isolation structure is located.
  • This configuration can avoid the distorted direction of the liquid crystal molecules where the isolation structure is located after applying the driving voltage to the first electrode and the second electrode group, thereby avoiding the phenomenon that the liquid crystal is wrong, so the liquid crystal prism can have an ideal The appearance. In this way, the naked-eye 3D display device fabricated using the liquid crystal prism can be prevented from appearing stray light and crosstalk, so that the display effect of the naked-eye 3D display device can be improved.
  • a plurality of prism units may be formed by steps S21-S25 shown in FIG. As shown in FIG. 8, in step S21, a first electrode is formed on the first substrate. In step S22, a plurality of second electrode groups are formed on the second substrate, each of the second electrode groups including a plurality of second electrodes. In step S23, a liquid crystal layer is formed on the second electrode group. In step S24, an isolation structure is formed between adjacent two second electrode groups. In step S25, the first substrate and the second substrate are bonded to the cassette.
  • forming the isolation structure between the adjacent two second electrode groups may include: forming an isolation structure on the second substrate, wherein the height of the isolation structure may be a thickness of the liquid crystal layer The height direction of the isolation structure coincides with the thickness direction of the liquid crystal layer.
  • the isolation structure When an isolation structure is disposed on the second substrate, the isolation structure does not need to penetrate the entire liquid crystal layer
  • the thickness the isolation structure having the height of the above ratio of the thickness of the liquid crystal layer, can function to replace the liquid crystal molecules at the position where the isolation structure 4 is located in the related art without filling the liquid crystal molecules in the position where the isolation structure is located.
  • the configuration can avoid the situation that the deflection direction of the liquid crystal molecules at the isolation structure is disordered after the voltage is applied to the first electrode and the second electrode, thereby avoiding the phenomenon that the liquid crystal is wrong, so the liquid crystal prism can have an ideal Morphology.
  • forming the isolation structure between the adjacent two second electrode groups may include: forming a first isolation structure on the first substrate, and forming a second isolation structure on the second substrate, wherein the first The height of the isolation structure and the second isolation structure are both the thickness of the liquid crystal layer The height directions of the first and second isolation structures coincide with the thickness direction of the liquid crystal layer.
  • the isolation structure When the isolation structure is disposed on the second substrate, the height of the required isolation structure is relatively high, and the process is difficult to manufacture. Therefore, the isolation structure can be simultaneously disposed on the first substrate and the second substrate. In this configuration, the heights of the first isolation structure and the second isolation structure only need to reach the thickness of the liquid crystal layer. It can replace the liquid crystal molecules in the position where the isolation structure is in the related art, and thus the process difficulty in the manufacturing process of the liquid crystal prism can be reduced.
  • the prepared isolation structure may have a width of 1 ⁇ m to 5 ⁇ m.
  • a resin having a higher transmittance can be selected as a forming material of the isolation structure.
  • the insulating structure is made of resin, on the one hand, the isolation structure can replace the liquid crystal molecules at the position where the isolation structure is located in the related art, and on the other hand, the transmittance of the liquid crystal prism is not affected, and the naked eye 3D made by the liquid crystal prism can be ensured. Display the display effect of the device.
  • the material of the isolation structure may be selected from the group consisting of methyl acrylate resin, ethyl acrylate resin, 2-methyl methacrylate resin or 2-methyl methacrylate resin.

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Abstract

一种液晶棱镜及其制作方法、显示装置。该液晶棱镜包括：第一基板（1）和第二基板（2），第一基板（1）和第二基板（2）之间设有多个棱镜单元（3），每个棱镜单元（3）包括第一电极（31）和第二电极组（32），第二电极组（32）包括多个第二电极（321），第一电极（31）和第二电极组（32）之间设有液晶层（33），相邻两个棱镜单元（3）之间设有透明绝缘的隔离结构（4），隔离结构（4）的折射率与液晶层（33）中液晶分子的长轴折射率相同。液晶棱镜应用于裸眼3D显示装置。

Description

一种液晶棱镜及其制作方法、显示装置
相关申请的交叉引用
本申请要求于2016年08月31日递交的中国专利申请第201610794309.1号的优先权和权益，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开涉及显示技术领域，尤其涉及一种液晶棱镜及其制作方法、显示装置。
背景技术
近年来，越来越多的人开始使用裸眼3D显示装置。现有的裸眼3D显示装置是由显示面板和光栅组成，其中，光栅包括多个光栅单元，将光栅按一定的方式设置在显示面板前面。裸眼3D显示装置中的光线通过光栅，经光栅分像之后，可使人的双眼看到不同的视觉图像，从而产生立体感觉。通常，用于裸眼3D显示装置的光栅单元借助于液晶棱镜(LC lens)来实现。
发明内容
本公开的实施例提供一种液晶棱镜及其制作方法、显示装置，用于形成具有理想形貌的液晶棱镜，从而可以提高显示装置的显示效果。
在本公开的一个方面，提供一种液晶棱镜。该液晶棱镜可以包括第一基板和第二基板，所述第一基板和第二基板之间设有多个棱镜单元，每个所述棱镜单元包括第一电极和第二电极组，所述第二电极组包括多个第二电极，所述第一电极和所述第二电极组之间设有液晶层，相邻两个所述棱镜单元之间设有透明绝缘的隔离结构，所述隔离结构的折射率与所述液晶层中液晶分子的长轴折射率相同。
在本公开提供的液晶棱镜中，相邻两个棱镜单元之间设置有透明绝缘的隔离结构，且该隔离结构的折射率与液晶层中液晶分子的长轴折射率相同，因此，该隔离结构可替换相关技术中隔离结构所处位置的液晶分子，而无需在隔离结构所处位置中填充液晶分子。通过这种配置，可以避免在对第一电极和第二电极组上施加驱动电压之后，隔离结构所在处的液晶分子的偏转方向错乱的情况，进而避免出现液晶向错的现象。以这种方式，液晶棱镜可以具有理想的形貌，从而使得使用这种液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
在本公开的另一方面，还提供一种用于制备液晶棱镜的方法。该方法包括：
提供第一基板和第二基板；以及
在所述第一基板和所述第二基板之间形成多个棱镜单元，其中，每个所述棱镜单元包括第一电极和第二电极组，所述第二电极组包括多个第二电极，所述第一电极和所述第二电极组之间设有液晶层，并且其中，相邻两个所述棱镜单元之间设有透明绝缘的隔离结构，所述隔离结构的折射率与所述液晶层中液晶分子的长轴折射率相同。
在通过本公开提供的用于制备液晶棱镜的方法制备的液晶棱镜中，相邻两个棱镜单元之间设置有隔离结构，且该隔离结构的折射率与液晶层中液晶分子的长轴折射率相同，因此，该隔离结构可替换相关技术中隔离结构所处位置的液晶分子，而无需在隔离结构所处位置中填充液晶分子。通过这种配置，可以减少在对第一电极和第二电极组上施加驱动电压之后，隔离结构所在处的液晶分子的偏转方向错乱的情况，避免出现液晶向错的现象。通过这种方式，该液晶棱镜就可以具有理想的形貌，从而使得液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
在本公开的又一方面，还提供了一种显示装置。该显示装置包括本文描述的任一实施例中的液晶棱镜。
附图说明
为了更清楚地说明本公开的实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出相关技术中液晶棱镜的结构示意图；
图2示出本公开的实施例提供的一种液晶棱镜结构示意图；
图3示出本公开的实施例提供的一种液晶棱镜的形貌的示意图；
图4示出本公开的实施例提供的另一种液晶棱镜的结构示意图；
图5示出本公开的实施例提供的另一种液晶棱镜的等效形貌的示意图；图6示出本公开的实施例提供的显示装置的示意图；
图7示出本公开的实施例提供的用于制备液晶棱镜的方法的示意性流程图；以及
图8示出形成多个棱镜单元的方法的示意性流程图。
具体实施方式
下面将结合本公开的实施例中的附图，对本公开的实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，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，都属于本公开保护的范围。
值得注意的是，在使用已知的组件(或方法或过程)可以部分或全部实现本公开的特定元件的情况下，将仅描述对理解本公开所需要的这种已知组件(或方法或过程)的那些部分，并且这种已知组件的其它部分的详细描述将被省略以便不会混淆本公开。进一步地，各种实施例通过说明的方式包含与在此涉及的组件等同的现在和未来已知的等同物。
除非上下文中另外明确地指出，否则在本文和所附权利要求中所使用的词语的单数形式包括复数，反之亦然。因而，当提及单数时，通常包括相应术语的复数。相似地，措辞“具有(have)”、“包含(comprise)”、“包含(include)”以及它们的语法变型将解释为包含在内而不是独占性地，除非本文中明确禁止这样的解释。在本文中使用术语“实例”之处，特 别是当其位于一组术语之后时，所述“实例”仅仅是示例性的和阐述性的，且不应当被认为是独占性的或广泛性的。
在相关技术中，液晶棱镜可以包括上基板、下基板、设置在上基板的上电极、设置在下基板的多个条状电极以及位于多个条状电极与上电极之间的液晶层。
在操作时，在上电极和多个条状电极上施加驱动电压，以形成梯度电场，该梯度电场使上基板和下基板之间的液晶具有不同的旋转方向，从而使得液晶棱镜具有光栅的作用，以实现裸眼3D显示。然而，在相关技术的液晶棱镜结构中，相邻两个条状电极之间会相互干扰，导致液晶层中的液晶分子的偏转方向错乱。如图1所示，由于相邻条状电极之间的干扰，出现液晶向错的现象，无法形成具有期望形貌的液晶棱镜，因此使用液晶棱镜制作的裸眼3D显示装置容易出现杂光和串扰的现象，导致裸眼3D显示装置的显示效果较差。
在本公开的实施例中，提供一种液晶棱镜及其制作方法、以及显示装置，其能够形成具有理想形貌的液晶棱镜，从而可以提高显示装置的显示效果。
在本公开的一个方面，提供一种液晶棱镜，如图2所示，该液晶棱镜可以包括第一基板1和第二基板2。第一基板1和第二基板2之间可以设置有多个棱镜单元3。每个棱镜单元3可以包括第一电极31和第二电极组32。第二电极组32可以包括多个第二电极321。第一电极31和第二电极组32之间设置有液晶层33。相邻两个棱镜单元3之间可以设置有透明绝缘的隔离结构4，隔离结构4的折射率与液晶层33中液晶分子的长轴折射率相同。
在本公开的实施例中，第一电极可以设置在第一基板1上，并且多个第二电极321可以设置在第二基板2上。
在本公开的实施例提供的液晶棱镜工作时，可以在第一电极31和第二电极组32上施加驱动电压，以形成一个梯度电场。该梯度电场可以使液晶层33中的液晶分子的旋转方向不同，从而使得液晶棱镜具有光栅的作用，以实现裸眼3D显示。
在本公开的实施例中，当棱镜单元以九宫格的形式分布或阵列分布时， 每一行中相邻两个棱镜单元之间可以设置有隔离结构，且每一列中相邻两个棱镜单元之间也可以设置有隔离结构。
在本实施例的技术方案中，将透明绝缘的隔离结构4设置在相邻两个棱镜单元3之间，且该隔离结构4的折射率与液晶层33中液晶分子的长轴折射率相同，因此，该隔离结构4可以替换隔离结构4所处位置处的液晶分子，从而无需在隔离结构4所处位置处填充液晶分子。通过这种配置，在对第一电极31和第二电极组32施加驱动电压之后，可以避免隔离结构4所在处的液晶分子的偏转方向发生错乱的情况，进而可以避免出现液晶向错的现象，因此可以形成具有理想形貌的液晶棱镜。以这种方式，使用该液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
示例性地，在本公开的实施例中可以提供液晶棱镜结构中隔离结构的两种具体设置位置。
在一个实施例中，如图2所示，隔离结构4可以设置在第二基板1上。在该实施例中，隔离结构4的高度可以为液晶层厚度的
Figure PCTCN2017092599-appb-000001
其中隔离结构4的高度的方向与液晶层33的厚度的方向一致。
当在第二基板上设置隔离结构4时，隔离结构4不需要贯穿整个液晶层33的厚度，隔离结构4具有液晶层厚度的上述比例的高度，即可起到替换相关技术中隔离结构4所处位置处的液晶分子的作用。如图3所示，在具有上述结构的液晶棱镜中的第一电极31和第二电极组32上施加电压之后，液晶层33中的液晶分子偏转所形成的液晶棱镜的形貌与理想的液晶棱镜的形貌(图中虚线所示即为理想的液晶棱镜的形貌)基本一致，这就使得使用该液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
在另一实施例中，如图4所示，隔离结构4可以包括第一隔离结构41和第二隔离结构42。第一隔离结构41可以设置在第一电极31上，并且第二隔离结构42可以设置在第二基板2上。在该实施例中，第一隔离结构41和第二隔离结构42的高度可以为液晶层高度的
Figure PCTCN2017092599-appb-000002
其中第一和第二隔离结构41、42的高度方向与液晶层33的厚度方向一致。
当隔离结构4设置在第二基板上时，所需隔离结构4的高度相对较高，制作时工艺难度较大，因此，可在第一电极31和第二基板2上同时设置隔 离结构。在这种配置中，第一隔离结构41和第二隔离结构42的高度只需达到液晶层33的厚度的
Figure PCTCN2017092599-appb-000003
即可起到替换相关技术中隔离结构4所处位置的液晶分子的作用，因此，可以降低液晶棱镜制作过程中的工艺难度。如图5所示，对具有上述结构的液晶棱镜施加电压之后，液晶层33中的液晶分子偏转所形成的液晶棱镜的形貌也与理想的液晶棱镜的形貌(图中虚线所示即为理想的液晶棱镜的形貌)基本一致，这就使得使用该液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
此外，在图2和图4中示出的两种液晶棱镜结构中，当隔离结构的宽度小于1μm时，该隔离结构不能完全替换现有技术中隔离结构所处位置的液晶分子；而当隔离结构的宽度过大时，使用液晶棱镜的生产工艺进行制备时，工艺难度较大，不易实现。因此，本公开的实施例中，隔离结构的宽度可以为1μm～5μm。
在本公开的实施例中，液晶分子的长轴折射率一般为1.8，本领域技术人员可根据实际需要选取隔离结构4的材料。示例性地，在本公开的实施例中，可以选择具有较高透过率的树脂作为隔离结构的形成材料。使用树脂制作隔离结构，一方面使得该隔离结构可替换相关技术中隔离结构所处位置的液晶分子，另一方面也不会影响液晶棱镜的透过率，并且可以保证该液晶棱镜制作的裸眼3D显示装置的显示效果。具体地，隔离结构的材质可选自丙烯酸甲酯树脂、丙烯酸乙酯树脂、2-甲基丙烯酸甲酯树脂或2-甲基丙烯酸乙酯树脂等。
在本公开的另一方面，还提供一种显示装置。如图6所示，该显示装置600可以包括根据本公开的至少一个液晶棱镜200，诸如上面和/或下面更详细公开的一个或多个实施例的至少一个液晶棱镜。因此对于显示装置的可选实施例，可以参考液晶棱镜的实施例。此外，本公开提供的显示装置还可以包括本文未详细描述的其他已知结构，本领域技术人员可以基于根据需要进行设置，此处不再进行赘述。
可选地，显示装置可以为液晶面板、电子纸、液晶电视、液晶显示器、数码相框、手机、平板电脑等任何具有显示功能的产品或部件。
在本公开的又一方面，还提供一种用于制备液晶棱镜的方法。该方法可以制备根据本发明的至少一个液晶棱镜，诸如根据上面和/或下面更详细 公开的一个或多个实施例的至少一个液晶棱镜。因此，对于该方法的可选实施例，可以参考本文描述的液晶棱镜的实施例。该方法包括下面描述的步骤，其可以以给定的顺序或以不同的顺序执行。此外，可以提供未列出的附加方法步骤，可以至少部分地同时执行两个或更多个或者甚至所有的方法步骤。
如图7所示，用于制备液晶棱镜的方法可以包括步骤S1-S2。在步骤S1，可以提供第一基板和第二基板。在步骤S2，在第一基板和第二基板之间可以形成多个棱镜单元，其中，每个所述棱镜单元可以包括第一电极和第二电极组，第二电极组可以包括多个第二电极，第一电极和第二电极组之间可以设有液晶层，并且其中，相邻两个棱镜单元之间可以设有透明绝缘的隔离结构，隔离结构的折射率与液晶层中液晶分子的长轴折射率相同。在使用本文描述的用于制备液晶棱镜的方法所制备的液晶棱镜中，相邻两个棱镜单元之间设置有透明绝缘的隔离结构，且该隔离结构的折射率与液晶层中液晶分子的长轴折射率相同，因此，该隔离结构可替换相关技术中隔离结构所处位置的液晶分子，而无需在隔离结构所处位置中填充液晶分子。这种配置可以避免在对第一电极和第二电极组上施加驱动电压之后，隔离结构所在处液晶分子的偏转方向发生错乱，进而可以避免出现液晶向错的现象，因此该液晶棱镜可以具有理想的形貌。以这种方式可以使得使用该液晶棱镜制作的裸眼3D显示装置不会出现杂光和串扰的现象，因此可以提高裸眼3D显示装置的显示效果。
在本公开的实施例中，可以通过图8中示出的步骤S21-S25来形成多个棱镜单元。如图8所示，在步骤S21，在第一基板上形成第一电极。在步骤S22，在第二基板上形成多个第二电极组，每个第二电极组包括多个第二电极。在步骤S23，在第二电极组上形成液晶层。在步骤S24，在相邻两个第二电极组之间形成隔离结构。在步骤S25，对盒第一基板和第二基板。
在一个实施例中，在相邻两个第二电极组之间形成隔离结构可以包括：在第二基板上形成隔离结构，其中，隔离结构的高度可以为液晶层厚度的
Figure PCTCN2017092599-appb-000004
隔离结构的高度方向与液晶层的厚度方向一致。
当在第二基板上设置隔离结构时，隔离结构不需要贯穿整个液晶层的 厚度，隔离结构具有液晶层厚度的上述比例的高度，即可起到替换相关技术中隔离结构4所处位置处的液晶分子的作用，而无需在隔离结构所处位置中填充液晶分子。这种配置可以避免在对第一电极和第二电极上施加电压之后，隔离结构所在处液晶分子的偏转方向错乱的情况，进而避免出现液晶向错的现象，因此该液晶棱镜就可以具有理想的形貌。
在另一个实施例中，在相邻两个第二电极组之间形成隔离结构可以包括：在第一基板上形成第一隔离结构，在第二基板上形成第二隔离结构，其中，第一隔离结构和第二隔离结构的高度均为液晶层厚度的
Figure PCTCN2017092599-appb-000005
第一和第二隔离结构的高度方向与液晶层的厚度方向一致。
当在第二基板上设置隔离结构时，所需隔离结构的高度相对较高，制作时工艺难度较大，因此，可在第一基板和第二基板上同时设置隔离结构。在这种配置中，第一隔离结构和第二隔离结构的高度只需达到液晶层的厚度的
Figure PCTCN2017092599-appb-000006
即可起到替换相关技术中隔离结构所处位置的液晶分子的作用，因此可以降低液晶棱镜制作过程中的工艺难度。
在本公开的实施例中，所制备的隔离结构的宽度可以为1μm～5μm。
示例性地，可以选择具有较高透过率的树脂作为隔离结构的形成材料。使用树脂制作隔离结构，一方面使得该隔离结构可替换相关技术中隔离结构所处位置的液晶分子，另一方面也不会影响液晶棱镜的透过率，并且可以保证该液晶棱镜制作的裸眼3D显示装置的显示效果。具体地，隔离结构的材质可选自丙烯酸甲酯树脂、丙烯酸乙酯树脂、2-甲基丙烯酸甲酯树脂或2-甲基丙烯酸乙酯树脂等。
以上所述，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以所述权利要求的保护范围为准。

Claims (12)

  1. 一种液晶棱镜包括：第一基板和第二基板，所述第一基板和第二基板之间设有多个棱镜单元，每个所述棱镜单元包括第一电极和第二电极组，所述第二电极组包括多个第二电极，所述第一电极和所述第二电极组之间设有液晶层，相邻两个所述棱镜单元之间设有透明绝缘的隔离结构，所述隔离结构的折射率与所述液晶层中液晶分子的长轴折射率相同。
  2. 根据权利要求1所述的液晶棱镜，其中，所述第一电极设置在所述第一基板上，并且所述第二电极设置在所述第二基板上。
  3. 根据权利要求2所述的液晶棱镜，其中，所述隔离结构设置在所述第二基板上，所述隔离结构的高度为所述液晶层的厚度的
    Figure PCTCN2017092599-appb-100001
    所述隔离结构的高度方向与所述液晶层的厚度方向一致。
  4. 根据权利要求2所述的液晶棱镜，其中，所述隔离结构包括第一隔离结构和第二隔离结构，所述第一隔离结构设置在所述第一电极上，所述第二隔离结构设置在所述第二基板上，且所述第一隔离结构和所述第二隔离结构的高度为液晶层的高度的
    Figure PCTCN2017092599-appb-100002
    所述第一和第二隔离结构的高度方向与所述液晶层的厚度方向一致。
  5. 根据权利要求1所述的液晶棱镜，其中，所述隔离结构在沿平行于所述第一基板或所述第二基板的方向上的宽度为1μm～5μm。
  6. 根据权利要求1～5任一项所述的液晶棱镜，其中，所述隔离结构的材质为树脂。
  7. 一种用于制备液晶棱镜的方法包括：
    提供第一基板和第二基板；以及
    在所述第一基板和所述第二基板之间形成多个棱镜单元，其中，每个所述棱镜单元包括第一电极和第二电极组，所述第二电极组包括多个第二电极，所述第一电极和所述第二电极组之间设有液晶层，并且其中，相邻两个所述棱镜单元之间设有透明绝缘的隔离结构，所述隔离结构的折射率与所述液晶层中液晶分子的长轴折射率相同。
  8. 根据权利要求7所述的用于制备液晶棱镜的方法，其中，形成所述多个棱镜单元包括：
    在所述第一基板上形成所述第一电极；
    在所述第二基板上形成多个第二电极组，每个第二电极组包括多个第 二电极；
    在所述第二电极组上形成所述液晶层；
    在相邻两个所述第二电极组之间形成所述隔离结构；以及
    对盒所述第一基板与所述第二基板。
  9. 根据权利要求8所述的用于制备液晶棱镜的方法，其中，在相邻两个所述第二电极组之间形成所述隔离结构的步骤包括：
    在所述第二基板上形成所述隔离结构，其中，所述隔离结构的高度为所述液晶层的厚度的
    Figure PCTCN2017092599-appb-100003
    所述隔离结构的高度方向与所述液晶层的厚度方向一致。
  10. 根据权利要求8所述的用于制备液晶棱镜的方法，其中，在相邻两个所述第二电极组之间形成所述隔离结构的步骤包括：
    在所述第一电极上形成第一隔离结构，并且在所述第二基板上形成第二隔离结构，其中，所述第一隔离结构和所述第二隔离结构的高度均为液晶层的厚度的
    Figure PCTCN2017092599-appb-100004
    所述第一和第二隔离结构的高度方向与所述液晶层的厚度方向一致。
  11. 根据权利要求7～11任一项所述的液晶棱镜的制作方法，其中，所述隔离结构的材质为树脂。
  12. 一种显示装置包括如权利要求1～6任一项所述的液晶棱镜。
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