WO2015074282A1 - 一种液晶透镜和立体显示装置 - Google Patents

一种液晶透镜和立体显示装置 Download PDF

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Publication number
WO2015074282A1
WO2015074282A1 PCT/CN2013/087818 CN2013087818W WO2015074282A1 WO 2015074282 A1 WO2015074282 A1 WO 2015074282A1 CN 2013087818 W CN2013087818 W CN 2013087818W WO 2015074282 A1 WO2015074282 A1 WO 2015074282A1
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Prior art keywords
electrode
substrate
liquid crystal
common electrode
strip
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PCT/CN2013/087818
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English (en)
French (fr)
Inventor
廖巧生
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TCL China Star Optoelectronics Technology Co Ltd
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Shenzhen China Star Optoelectronics Technology Co Ltd
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Priority to US14/127,488 priority Critical patent/US9081198B2/en
Publication of WO2015074282A1 publication Critical patent/WO2015074282A1/zh
Anticipated expiration legal-status Critical
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/29Devices 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30Image reproducers
    • H04N13/302Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/29Devices 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
    • G02F1/294Variable focal length devices
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/12Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode
    • G02F2201/128Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 electrode field shaping

Definitions

  • Liquid crystal lens and stereo display device Liquid crystal lens and stereo display device
  • the present invention relates to the field of stereoscopic display technology, and in particular to a liquid crystal lens and a stereoscopic display device.
  • the current stereoscopic display device generally adopts a stereoscopic display, that is, a 3D (Tree Dimensions) display, which is mainly displayed by a liquid crystal lens such as a liquid crystal lens attached to the light output side of a 2D (Two Dimensions, 2D) display panel.
  • a 3D (Tree Dimensions) display which is mainly displayed by a liquid crystal lens such as a liquid crystal lens attached to the light output side of a 2D (Two Dimensions, 2D) display panel.
  • the left and right parallax images displayed on the panel are respectively sent to the observer's left and right eyes, and then merged through the brain to obtain stereoscopic perception of the viewer.
  • the liquid crystal lens and the like are mainly made of a transparent material to form a cylindrical lens array of a certain size, and the light of different pixels in the display panel is emitted in different polarization directions by the refraction action, thereby obtaining the separation of the parallax images.
  • FIG. 1 it is a schematic structural diagram of a liquid crystal lens in the prior art, wherein the liquid crystal lens 100 corresponds to the liquid crystal molecules 110a and 120a corresponding to the two strip electrode groups 110 and 120 when no voltage is applied. The deflection is the same, that is, the pretilt angle is ⁇ . . At this time, the center and the edge of the liquid crystal layer corresponding to the strip electrode groups 110, 120 have no refractive index difference, and the user views through the liquid crystal lens 100 with 20 images without parallax.
  • Fig. 2 is a schematic view showing the liquid crystal deflection when the liquid crystal lens shown in Fig. 1 is energized.
  • the liquid crystal lens 100 when a certain voltage is applied, the liquid crystal lens 100 exhibits a refractive index difference between the center and the edge of the liquid crystal layer corresponding to the strip electrode groups 110 and 120 due to the distribution of the electric field, and when the focus mode is satisfied, A lens-like phase distribution is formed, and the user views 20 images having left and right parallax through the liquid crystal lens 100, and the 3D image can be seen at the optimal viewing distance.
  • the technical problem to be solved by the present invention is to provide a liquid crystal lens and a stereoscopic display device, which can enhance the condensing property of the display and improve the viewing effect at the time of 3D display.
  • an aspect of the present invention provides a liquid crystal lens including a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer sandwiched therebetween, wherein: the second substrate Providing a plurality of strip electrode groups arranged along the first direction parallel to the second substrate;
  • the first substrate is provided with a common electrode opposite to the plurality of strip electrode groups, and at least one slit electrode is disposed on a region of each strip electrode group facing the common electrode, and the slit electrode is The common electrodes are separated from each other.
  • the voltage received by the slit electrode during operation is higher than the voltage received when the common electrode is in operation.
  • the slit electrode is obtained by etching on the common electrode.
  • two slit electrodes are disposed on the common electrode facing each strip electrode group, and the two slit electrodes and the common electrode are separated from each other.
  • the voltages received by the two slit electrodes during operation are different from each other and higher than the voltage received when the common electrode operates.
  • the width of the two slit electrodes is different, and the voltage received during operation is higher than the voltage received when the common electrode is in operation.
  • another aspect of the embodiments of the present invention further provides a liquid crystal lens including a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer sandwiched therebetween, wherein:
  • the first substrate is provided with a common electrode opposite to the plurality of strip electrode groups, and at least one slit electrode is disposed on a region of each strip electrode group facing the common electrode, and the slit electrode is Obtained on the common electrode by etching, which is separated from the common electrode, the slit electrode receiving a voltage during operation higher than a voltage received by the common electrode during operation.
  • two slit electrodes are disposed on the common electrode facing each strip electrode group, and the two slit electrodes and the common electrode are separated from each other.
  • the voltages received by the two slit electrodes during operation are different from each other and higher than the voltage received when the common electrode operates.
  • the width of the two slit electrodes is different, and the voltage received during operation is higher than the voltage received when the common electrode is in operation.
  • Each of the strip electrode groups includes at least two electrode strips that are sequentially insulated and stacked in a second direction perpendicular to the second substrate, and the width of the at least two electrode strips is oriented toward the first The direction of a substrate is sequentially reduced.
  • the projection area of each of the at least two electrode strips on the second substrate falls on a projection area of the other electrode strips closer to the second substrate on the second substrate.
  • a further aspect of the present invention provides a stereoscopic display device, where the stereoscopic display device includes:
  • liquid crystal lens being disposed on a light exiting side of the display panel
  • the liquid crystal lens comprises a first substrate and a second substrate disposed opposite to each other and a liquid crystal layer sandwiched between the two, wherein:
  • the first substrate is provided with a common electrode opposite to the plurality of strip electrode groups, and at least one slit electrode is disposed on a region of each strip electrode group facing the common electrode, and the slit electrode is Obtained on the common electrode by etching, which is separated from the common electrode, the slit electrode receiving a voltage during operation higher than a voltage received by the common electrode during operation.
  • two slit electrodes are disposed on the common electrode in a region facing each strip electrode group, and the two slit electrodes and the common electrode are separated from each other.
  • the voltages received by the two slit electrodes during operation are different from each other and higher than the voltage received when the common electrode operates.
  • the width of the two slit electrodes is different, and the voltage received during operation is higher than the voltage received when the common electrode is in operation.
  • Each of the strip electrode groups includes at least two electrode strips that are sequentially insulated and stacked in a second direction perpendicular to the second substrate, and the width of the at least two electrode strips is oriented toward the first The direction of a substrate is sequentially reduced.
  • the projection area of each of the at least two electrode strips on the second substrate falls on a projection area of the other electrode strips closer to the second substrate on the second substrate.
  • At least one slit electrode is disposed on a common electrode on a region facing each strip electrode group, and the voltage received by the slit electrode during operation is greater than the voltage received when the common electrode is operated, thereby not only Switching between 2D/3D display can also improve the match between the current Neff profile and the ideal Neff profile, enhance the concentrating of the display, and improve the viewing effect in 3D display.
  • FIG. 1 is a schematic structural view of a liquid crystal lens in the prior art
  • FIG. 2 is a schematic view showing the liquid crystal deflection when the liquid crystal lens shown in FIG. 1 is energized;
  • FIG. 3 is a schematic diagram of a current Neff profile corresponding to the liquid crystal lens shown in FIG. 2;
  • FIG. 4 is a schematic structural view of an embodiment of a liquid crystal lens provided by the present invention.
  • FIG. 5 is a schematic diagram of a current Neff profile corresponding to the liquid crystal lens shown in FIG. 4;
  • FIG. 6 is a schematic view of another embodiment of a liquid crystal lens provided by the present invention.
  • FIG. 7 is a schematic structural view of an embodiment of a stereoscopic display device according to the present invention. detailed description
  • the liquid crystal lens 600 of the present embodiment includes a first substrate 610 and a second substrate 620 which are disposed opposite to each other, and a liquid crystal layer 630 sandwiched therebetween.
  • the second substrate 620 is provided with a plurality of strip electrode groups 621 arranged in the first direction X, wherein the first direction X is parallel to the horizontal direction in which the second substrate 620 is located.
  • Each of the strip electrode groups 621 includes a first layer electrode strip 622, a second layer electrode strip 623, and a third layer electrode strip 624 which are sequentially insulated and stacked in the second direction Y.
  • the second direction X is perpendicular to the horizontal direction of the second substrate 620, that is, perpendicular to the first direction X.
  • the width d1 of the first layer electrode strip 622 is greater than the width d2 of the second layer electrode strip 623, and the projection area of the second layer electrode strip 623 on the second substrate 620 falls on the first layer electrode strip 622 on the second substrate 620. In the projection area.
  • the width of the second layer electrode strip 623 is also greater than the width d3 of the third layer electrode strip 624, and the projection area of the third layer electrode strip 624 on the second substrate 620 falls on the second layer electrode strip 623 on the second substrate 620. In the projection area.
  • the first substrate 610 is provided with a common electrode 611 opposite to the plurality of strip electrode groups 621.
  • the common electrode 611 is a whole transparent ITO (indium tin oxide;) layer.
  • At least one slit electrode 612 is disposed on the common electrode 611 facing the group of each strip electrode 621.
  • the slit electrode 612 and the common electrode 611 are separated from each other.
  • the slit electrode 612 may be Obtained by etching on the common electrode 611.
  • the voltage received by the slit electrode 621 during operation is higher than the voltage received by the common electrode 611.
  • FIG. 5 is a schematic diagram of a current Neff profile corresponding to the liquid crystal lens shown in FIG. 4.
  • FIG. 5 The working principle of the 2D/3D display switching of the liquid crystal lens of the embodiment is described in detail below with reference to FIG. 4 and FIG. Cheng:
  • the voltage VI received by the first layer electrode strip 622 is smaller than that received by the second layer electrode strip 623.
  • the voltage V2 is smaller than the voltage V3 received by the third layer electrode strip 624.
  • the liquid crystal molecules in the liquid crystal layer 630 produce a deflection similar to that shown in FIG. 2, and a higher voltage is applied to the slit electrode 621.
  • the region where the liquid crystal molecules are deflected abnormally (as shown by the dotted line frame) as shown in FIG. 2 is adjusted.
  • the liquid crystal molecules whose deflection is abnormal at the corresponding position in FIG. 2 are deflected toward the ideal deflection direction, so that the corresponding Neff profile L4 is more consistent with the Neff profile L1 shown in FIG. 2 and the ideal Neff profile L (the dotted line in the figure is selected).
  • the fixed area) further makes the liquid crystal lens 600 more condensable, and the viewer uses it for 3D viewing better.
  • FIG. 6 is a schematic view showing the structure of another embodiment of the liquid crystal lens of the present invention.
  • the liquid crystal lens 600 of the present embodiment is different from the liquid crystal lens 600 of the above-described embodiment of FIG. 4 in that: the present embodiment is disposed on the common electrode 611 for the area of each strip electrode group 621.
  • the slit electrode 612 includes two, that is, a slit electrode 612a and a slit electrode 612b, and the two slit electrodes and the common electrode 611 are separated from each other.
  • the two slit electrodes (612a and 612b) may have the same width, and the voltages they receive during operation are different from each other and higher than the voltage received when the common electrode 611 operates.
  • the two slit electrodes ( 612a and 612b ) may have different widths, and the voltages they receive during operation may be the same as each other, or may be different from each other, and higher than the above.
  • the liquid crystal molecules in the liquid crystal region 630 are adjusted by the two slit electrodes (612a and 612b), so that the liquid crystal molecules with abnormal deflection in the broken line frame in FIG. 3 are deflected toward the ideal deflection direction, corresponding to The Neff profile (not shown) is more consistent with the ideal Neff profile L than the ideal Neff profile L (the selected area of the dotted line in the figure), which in turn makes the liquid crystal lens 600 more concentrated, and is used by the viewer. It works better when viewed in 3D. By making The use of two slit electrodes and the application of different voltages make the adjustment effect better and the adjustment more flexible.
  • the ideal Neff profile L cannot be absolutely realized, and the width and voltage of at least one slit electrode can only be adjusted according to actual conditions to achieve a corresponding current
  • the slit electrode is as close as possible to it.
  • Fig. 7 is a schematic structural view of an embodiment of a stereoscopic display device of the present invention.
  • the stereoscopic display device 900 of the present embodiment includes: a display panel 910 and a liquid crystal lens 600 of the above embodiment.
  • the liquid crystal lens 600 is disposed on the light exiting side of the display panel 910.
  • the viewer views a 2D image without parallax; when the liquid crystal lens 600 is energized, it causes the light of different pixels P1, P2 in the display panel 910 to have different polarization directions by the refraction action described in the above embodiment.
  • the three-dimensional parallax images displayed on the display panel 910 are respectively sent to the left-eye right eye R of the observer at the optimal viewing distance and then merged through the observer's brain to obtain stereoscopic perception, and the 3D image is viewed.
  • the embodiment of the present invention provides at least one slit electrode in a region facing each strip electrode group on the common electrode, and the voltage received by the slit electrode during operation is greater than that received when the common electrode is in operation.
  • the voltage can not only switch the 2D/3D display, but also improve the match between the current Neff profile and the ideal Neff profile, enhance the concentrating of the display, and improve the viewing effect in 3D display.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Liquid Crystal (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

一种液晶透镜(600)和立体显示装置,液晶透镜包括相对设置的第一基板(610)和第二基板(620)以及夹持于两者之间的液晶层(630),第二基板上设置有沿平行于第二基板的第一方向(X)间隔排布的多个条状电极组(621);第一基板设置有与多个条状电极组相对的公共电极(611),在公共电极上正对每一条状电极组的区域设置有至少一狭缝电极(612),狭缝电极与公共电极彼此分离。采用这种结构可以增强显示的聚光性,改善立体显示装置在3D显示时的观看效果。

Description

一种液晶透镜和立体显示装置
本申请要求于 2013 年 11 月 20 日提交中国专利局、 申请号为 201310584625.2、 发明名称为 "一种液晶透镜和立体显示装置" 的中国专利 申请的优先权, 上述专利的全部内容通过引用结合在本申请中。 技术领域
本发明涉及立体显示技术领域, 具体而言涉及一种液晶透镜和立体显示 装置。
背景技术
当前的立体显示装置一般采用 自由立体显示, 即棵视 3D ( Tree Dimensions, 三维)显示, 其主要通过加装在 2D ( Two Dimensions, 二维) 显示面板出光侧的液晶透镜等分光器件, 将显示面板上显示的左、 右视差图 像分别送入观察者的左、 右眼, 再经过大脑融合从而使观看者获得立体感 知。
其中, 液晶透镜等分光器件主要采用透明材质来制作一定尺寸的柱透镜 阵列, 通过其折射作用使显示面板中不同像素的光以不同偏振方向出射, 从 而获得视差图像的分离。 如图 1所示, 是现有技术中一种液晶透镜的结构示 意图,其中, 液晶透镜 100在未施加电压 时,相邻两个条状电极组 110、 120 所对应的液晶分子 110a、 120a的偏转相同, 即预倾角均为 θ。 。 此时, 条 状电极组 110、 120对应的液晶层的中心和边缘均没有折射率差, 用户通过 液晶透镜 100观看的是没有视差的 20图像。
图 2是图 1所示液晶透镜通电时的液晶偏转示意图。 结合图 1和图 2所 示, 液晶透镜 100在施加一定电压时, 由于电场的分布, 条状电极组 110、 120对应的液晶层的中心和边缘出现折射率差, 并在满足聚焦模式时会形成 类似透镜的相位分布,用户通过液晶透镜 100观看的是具有左、右视差的 20 图像, 且在最佳观看距离处即可看到 3D图像。
然而, 由于预倾角均相同, 在施加电压时液晶层 130中的所有液晶分子 (包括液晶分子 (包括液晶分子 110a、 120 a )会沿着电场的分布方向进行偏 致相对称的两个条状电极组 110、 120所对应的液晶分子的偏转不对称, 如 图中示出虚框部分的液晶分子的偏转就比较混乱,从而使得当前 Neff profile (有效折射率曲线)L2与理想 Neff profile L存在吻合度差异(如图 3所示), 进而降低显示装置的聚光性, 影响 3D显示时的观看效果。
综上所述,有必要提供一种液晶透镜和立体显示装置,以解决上述问题。 发明内容
本发明所要解决的技术问题在于, 提供一种液晶透镜和立体显示装置, 可以增强显示的聚光性, 改善 3D显示时的观看效果。
为了解决上述技术问题, 本发明实施例的一方面提供一种液晶透镜, 包 括相对设置的第一基板和第二基板以及夹持于两者之间的液晶层, 其中: 所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组;
所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极, 所述狭缝电极 与所述公共电极彼此分离。
其中 , 所述狭缝电极在工作时接收的电压高于所述公共电极工作时接收 的电压。
其中, 所述狭缝电极为在所述公共电极上通过蚀刻获得。
其中,在所述公共电极上正对每一条状电极组的区域设置有两个狭缝电 极, 所述两个狭缝电极与所述公共电极三者之间彼此分离。
其中, 所述两个狭缝电极在工作时接收的电压彼此不同, 且高于所述公 共电极工作时接收的电压。
其中, 所述两个狭缝电极的宽度不同, 且其工作时接收的电压均高于所 述公共电极工作时接收的电压。
相应地, 本发明实施例的另一方面还提供一种液晶透镜, 包括相对设置 的第一基板和第二基板以及夹持于两者之间的液晶层, 其中:
所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组;
所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极, 所述狭缝电极 为在所述公共电极上通过蚀刻获得, 其与所述公共电极彼此分离, 所述狭缝 电极在工作时接收的电压高于所述公共电极在工作时接收的电压。
其中,在所述公共电极上正对每一条状电极组的区域设置有两个狭缝电 极, 所述两个狭缝电极与所述公共电极三者之间彼此分离。
其中, 所述两个狭缝电极在工作时接收的电压彼此不同, 且高于所述公 共电极工作时接收的电压。
其中, 所述两个狭缝电极的宽度不同, 且其工作时接收的电压均高于所 述公共电极工作时接收的电压。
其中 , 所述每一所述条状电极组包括沿垂直于所述第二基板的第二方向 依次绝缘堆叠的至少两层电极条,且所述至少两层电极条的宽度沿朝向所述 第一基板的方向依次减小。
其中, 所述至少两层电极条中的每一电极条在所述第二基板上的投影区 域均落在更靠近所述第二基板的其他电极条在所述第二基板上的投影区域。
相应地, 本发明实施例的再一方面还提供一种立体显示装置, 所述立体 显示装置包括:
显示面板; 以及
液晶透镜, 所述液晶透镜设置于所述显示面板的出光侧;
其中, 所述液晶透镜包括相对设置的第一基板和第二基板以及夹持于两 者之间的液晶层, 其中:
所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组;
所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极, 所述狭缝电极 为在所述公共电极上通过蚀刻获得, 其与所述公共电极彼此分离, 所述狭缝 电极在工作时接收的电压高于所述公共电极在工作时接收的电压。 其中,在所述公共电极上正对每一条状电极组的区域设置有两个狭缝电 极, 所述两个狭缝电极与所述公共电极三者之间彼此分离。
其中, 所述两个狭缝电极在工作时接收的电压彼此不同, 且高于所述公 共电极工作时接收的电压。
其中, 所述两个狭缝电极的宽度不同, 且其工作时接收的电压均高于所 述公共电极工作时接收的电压。
其中 , 所述每一所述条状电极组包括沿垂直于所述第二基板的第二方向 依次绝缘堆叠的至少两层电极条,且所述至少两层电极条的宽度沿朝向所述 第一基板的方向依次减小。
其中, 所述至少两层电极条中的每一电极条在所述第二基板上的投影区 域均落在更靠近所述第二基板的其他电极条在所述第二基板上的投影区域。
实施本发明, 具有如下的有益效果:
本发明实施例通过在公共电极上正对每一条状电极组的区域设置至少 一个狭缝电极, 并且使得狭缝电极在工作时接收的电压大于所述公共电极工 作时接收的电压, 进而不仅可以进行 2D/3D显示的切换, 还可以提高当前 Neff profile与理想 Neff profile的吻合度, 增强显示的聚光性, 改善 3D显示 时的观看效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术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发明的一些实施例, 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它的附图。
图 1是现有技术中一种液晶透镜的结构示意图;
图 2是图 1所示液晶透镜通电时的液晶偏转示意图;
图 3是图 2所示液晶透镜对应的当前 Neff profile示意图;
图 4为本发明提供的一种液晶透镜一实施例的结构示意图;
图 5是图 4所示液晶透镜对应的当前 Neff profile示意图;
图 6是本发明提供的一种液晶透镜的另一实施例的示意图;
图 7是本发明提供的一种立体显示装置一实施例的结构示意图。 具体实施方式
以下各实施例的说明是参考附图, 用以式例本发明可以用以实施的特定 实施例。 本发明所提到的方向用语, 例如「上」、 「下」、 「前」、 「后」、 「左」、 Γ右」、 「内」、 「外」、 「侧面」等, 仅是参考附加图式的方向。 因此, 使用的 方向用语是用以说明及理解本发明, 而非用以限制本发明。
下面结合附图和实施例对本发明进行详细说明。
图 4是本发明液晶透镜一实施例的结构示意图。 如图 4所示, 本实施的 液晶透镜 600包括相对设置的第一基板 610和第二基板 620以及夹持于两者 之间的液晶层 630。
在本实施例中 ,第二基板 620上设置有沿第一方向 X间隔排布的多个条 状电极组 621 , 其中第一方向 X平行于第二基板 620所在的水平方向。
每一条状电极组 621 包括沿第二方向 Y依次绝缘堆叠的第一层电极条 622、 第二层电极条 623和第三层电极条 624。 其中, 第二方向 X垂直于第 二基板 620所在的水平方向, 即与第一方向 X互相垂直。 第一层电极条 622 的宽度 dl大于第二层电极条 623的宽度 d2, 且第二层电极条 623在第二基 板 620上的投影区域落在第一层电极条 622在第二基板 620上的投影区域中。 第二层电极条 623的宽度也大于第三层电极条 624的宽度 d3 ,且第三层电极 条 624在第二基板 620上的投影区域落在第二层电极条 623在第二基板 620 上的投影区域中。
在本实施例中, 第一基板 610上设置有与多个条状电极组 621相对的公 共电极 611 , 优选公共电极 611为一整片透明 ITO (氧化铟锡;)层。
在所述公共电极 611上正对每一条状电极 621组的区域设置有至少一狭 缝电极 612, 所述狭缝电极 612与所述公共电极 611彼此分离, 具体地, 狭 缝电极 612可以是在所述公共电极 611上通过蚀刻获得。 其中, 所述狭缝电 极 621在工作时接收的电压高于所述公共电极 611接收的电压。 通过在该狭 缝电极 621上施加高电压,可以对如图 2所示的液晶分子偏转异常的区域进 行调整。
图 5是图 4所示液晶透镜对应的当前 Neff profile示意图。 下面结合图 4 和图 5详细介绍本实施例的液晶透镜实现 2D/3D显示切换的工作原理及过 程:
液晶透镜 600在未施加电压时,每一条状电极组 621对应的液晶层的中 心和边缘均没有折射率差,此时图像光线通过液晶透镜 600时不会发生折射 现象, 即不会产生视差。
当对液晶透镜 600施加工作电压时, 由于越靠近液晶层 630需要使液晶 层 630中液晶分子偏转的能量越大, 因此第一层电极条 622接收的电压 VI 小于第二层电极条 623接收的电压 V2, 第二层电极条 623接收的电压 V2 小于第三层电极条 624接收的电压 V3。 与此同时, 在上述三层电极条与公 共电极 611的作用下,液晶层 630中的液晶分子会产生类似图 2所示的偏转, 在该狭缝电极 621上施加更高的电压, 可以对如图 2所示的液晶分子偏转异 常的区域(如虚线框)进行调整。 使如图 2中相应处偏转异常的液晶分子朝 向理想的偏转方向偏转, 从而使其对应的 Neff profile L4相比较于图 2所示 的 Neff profile L1与理想 Neff profile L更加吻合 (图中虚线选定区域 ), 进而 使得液晶透镜 600的聚光性更强, 观看者使用其进行 3D观看时效果更佳。
图 6是本发明液晶透镜另一实施例的结构示意图。 如图 6所示, 本实施 例的液晶透镜 600与上述图 4实施例的液晶透镜 600的不同之处在于: 本实 施例在所述公共电极 611上正对每一条状电极组 621的区域设置的狭缝电极 612包括两个, 即狭缝电极 612a和狭缝电极 612b, 所述两个狭缝电极与所 述公共电极 611三者之间彼此分离。
其中, 所述两个狭缝电极(612a和 612b ) 宽度可以一样, 他们在在工 作时接收的电压彼此不同, 且高于所述公共电极 611工作时接收的电压。
可以理解的是, 在其他实施例中, 所述两个狭缝电极 ( 612a和 612b ) 宽度可以不一样, 他们在在工作时接收的电压可以彼此相同, 也可以彼此不 同, 且高于所述公共电极 611工作时接收的电压。
在本实施例中, 通过两个狭缝电极(612a和 612b )对液晶区 630中的 液晶份子进行调节,可以使如图 3中虚线框中偏转异常的液晶分子朝向理想 的偏转方向偏转, 对应的 Neff profile (未画出 )相比较于图 2所示的 Neff profile L1与理想 Neff profile L更加吻合 (图中虚线选定区域), 进而使得液 晶透镜 600的聚光性更强, 观看者使用其进行 3D观看时效果更佳。 通过使 采用两个狭缝电极, 以及通施加不同的电压, 可以使调节的效果更佳, 调节 起来也更灵活。
另外, 需要说明的是, 由于电场分布的不均匀以及其它实际操作原因, 理想 Neff profile L并不能绝对实现,只能根据实际情况对至少一个狭缝电极 的宽度和电压进行调整以实现对应的当前狭缝电极尽可能与其吻合。
图 7是本发明的立体显示装置一实施例的结构示意图。 如图 7所示, 本 实施例的 立体显示装置 900包括: 显示面板 910和上述实施例的液晶透镜 600。 其中, 液晶透镜 600设置于显示面板 910的出光侧。
液晶透镜 600未通电时, 观看者观看的是没有视差的 2D图像; 液晶透镜 600 通电时, 其通过上述实施例所述的折射作用使显示面板 910中不同像素 Pl、 P2的光以不同偏振方向出射, 从而将显示面板 910上 显示的左、 右视差图像分别送入处于最佳观看距离处的观察者的左眼 右 眼 R再经过观察者大脑的融合从而获得立体感知, 观看 3D图像。
综上所述, 本发明实施例通过在公共电极上正对每一条状电极组的区域 设置至少一个狭缝电极, 并且使得狭缝电极在工作时接收的电压大于所述公 共电极工作时接收的电压,进而不仅可以进行 2D/3D显示的切换,还可以提 高当前 Neff profile与理想 Neff profile的吻合度, 增强显示的聚光性, 改善 3D显示时的观看效果。
以上所揭露的仅为本发明较佳实施例而已, 当然不能以此来限定本发明 之权利范围, 因此等同变化, 仍属本发明所涵盖的范围。

Claims

权 利 要 求
1、 一种液晶透镜, 包括相对设置的第一基板和第二基板以及夹持于两 者之间的液晶层, 其特征在于:
所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组;
所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极 , 所述狭缝电极 与所述公共电极彼此分离。
2、 如权利要求 1 所述的液晶透镜, 其中, 所述狭缝电极在工作时接收 的电压高于所述公共电极在工作时接收的电压。
3、 根据权利要求 2所述的液晶透镜, 其中, 所述狭缝电极为在所述公 共电极上通过蚀刻获得。
4、 根据权利要求 1 所述的液晶透镜, 其中, 在所述公共电极上正对每 一条状电极组的区域设置有两个狭缝电极, 所述两个狭缝电极与所述公共电 极三者之间彼此分离。
5、 根据权利要求 4所述的液晶透镜, 其中, 所述两个狭缝电极在工作 时接收的电压彼此不同, 且高于所述公共电极工作时接收的电压。
6、 根据权利要求 4所述的液晶透镜, 其中, 所述两个狭缝电极的宽度 不同, 且其工作时接收的电压均高于所述公共电极工作时接收的电压。
7、 如权利要求 5所述的液晶透镜, 其中, 所述每一所述条状电极组包 括沿垂直于所述第二基板的第二方向依次绝缘堆叠的至少两层电极条,且所 述至少两层电极条的宽度沿朝向所述第一基板的方向依次减 'J、。
8、 根据权利要求 7所述的液晶透镜, 其中, 所述至少两层电极条中的 每一电极条在所述第二基板上的投影区域均落在更靠近所述第二基板的其 他电极条在所述第二基板上的投影区域。
9、 一种液晶透镜, 包括相对设置的第一基板和第二基板以及夹持于两 者之间的液晶层, 其特征在于:
所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组; 所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极 , 所述狭缝电极 为在所述公共电极上通过蚀刻获得, 其与所述公共电极彼此分离, 所述狭缝 电极在工作时接收的电压高于所述公共电极在工作时接收的电压。
10、 根据权利要求 9所述的液晶透镜, 其中, 在所述公共电极上正对每 一条状电极组的区域设置有两个狭缝电极, 所述两个狭缝电极与所述公共电 极三者之间彼此分离。
11、 根据权利要求 10所述的液晶透镜, 其中, 所述两个狭缝电极在工 作时接收的电压彼此不同, 且高于所述公共电极工作时接收的电压。
12、 根据权利要求 10所述的液晶透镜, 其中, 所述两个狭缝电极的宽 度不同, 且其工作时接收的电压均高于所述公共电极工作时接收的电压。
13、 如权利要求 12所述的液晶透镜, 其中, 所述每一所述条状电极组 包括沿垂直于所述第二基板的第二方向依次绝缘堆叠的至少两层电极条,且 所述至少两层电极条的宽度沿朝向所述第一基板的方向依次减小。
14、 根据权利要求 13所述的液晶透镜, 其中, 所述至少两层电极条中 的每一电极条在所述第二基板上的投影区域均落在更靠近所述第二基板的 其他电极条在所述第二基板上的投影区域。
15、 一种立体显示装置, 所述立体显示装置包括:
显示面板; 以及
液晶透镜, 所述液晶透镜设置于所述显示面板的出光侧;
其中, 所述液晶透镜包括相对设置的第一基板和第二基板以及夹持于两 者之间的液晶层, 其中:
所述第二基板上设置有沿平行于所述第二基板的第一方向间隔排布的 多个条状电极组;
所述第一基板设置有与所述多个条状电极组相对的公共电极,在所述公 共电极上正对每一条状电极组的区域设置有至少一狭缝电极 , 所述狭缝电极 为在所述公共电极上通过蚀刻获得, 其与所述公共电极彼此分离, 所述狭缝 电极在工作时接收的电压高于所述公共电极在工作时接收的电压。
16、 根据权利要求 15所述的立体显示装置, 其中, 在所述公共电极上 正对每一条状电极组的区域设置有两个狭缝电极, 所述两个狭缝电极与所述 公共电极三者之间彼此分离。
17、 根据权利要求 16所述的立体显示装置, 其中, 所述两个狭缝电极 在工作时接收的电压彼此不同, 且高于所述公共电极工作时接收的电压。
18、 根据权利要求 16所述的立体显示装置, 其中, 所述两个狭缝电极 的宽度不同, 且其工作时接收的电压均高于所述公共电极工作时接收的电 压。
19、 如权利要求 17所述的立体显示装置, 其中, 所述每一所述条状电 极组包括沿垂直于所述第二基板的第二方向依次绝缘堆叠的至少两层电极 条, 且所述至少两层电极条的宽度沿朝向所述第一基板的方向依次减小。
20、 根据权利要求 19所述的立体显示装置, 其中, 所述至少两层电极 条中的每一电极条在所述第二基板上的投影区域均落在更靠近所述第二基 板的其他电极条在所述第二基板上的投影区域。
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