WO2015192543A1 - 偏光控制面板及其制作方法和显示装置 - Google Patents

偏光控制面板及其制作方法和显示装置 Download PDF

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Publication number
WO2015192543A1
WO2015192543A1 PCT/CN2014/088078 CN2014088078W WO2015192543A1 WO 2015192543 A1 WO2015192543 A1 WO 2015192543A1 CN 2014088078 W CN2014088078 W CN 2014088078W WO 2015192543 A1 WO2015192543 A1 WO 2015192543A1
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WIPO (PCT)
Prior art keywords
substrate
common electrode
electrode layer
layer
control panel
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Ceased
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PCT/CN2014/088078
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English (en)
French (fr)
Inventor
廖燕平
杜玙璠
王丹
尹大根
邵喜斌
张召霞
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Publication of WO2015192543A1 publication Critical patent/WO2015192543A1/zh
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Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1343—Electrodes

Definitions

  • Embodiments of the present invention relate to a polarized light control panel, a method of fabricating the same, and a display device.
  • Three-Dimensional (3D) stereoscopic display technology has attracted much attention and has become an important frontier technology field in the display field.
  • 3D Three-Dimensional
  • the polarized 3D is based on the principle of the vibration direction of the light to decompose the original image.
  • the image is first divided into two groups: vertical polarized light and horizontally polarized light.
  • the left and right mirrors of the 3D glasses are polarized with different polarization directions. lens. In this way, the left and right eyes of the person can receive two sets of pictures, and then the stereoscopic images are synthesized through the brain.
  • the polarized 3D display comprises a liquid crystal display module and a Polarization Control Panel (PCP), wherein the polarizing control panel has a ⁇ /2 phase delay for the polarized light emitted by the liquid crystal display module in an off state (Off-status).
  • PCP Polarization Control Panel
  • the scanning electrode of the array substrate of the polarizing control panel is divided into a plurality of electrodes from top to bottom, and the plurality of electrodes are sequentially changed to the on state or the off state from the top to the bottom during scanning, so that the two eyes can simultaneously see the image, thereby achieving no resolution loss. 3D effect.
  • At least one embodiment of the present invention provides a polarizing control panel, a manufacturing method thereof, and a display device for reducing light leakage caused by liquid crystal rotation, thereby improving the quality of a display screen.
  • At least one embodiment of the present invention provides a polarizing control panel comprising: a first substrate and a second substrate opposite to each other, and a liquid crystal layer between the first substrate and the second substrate.
  • a scanning electrode layer is disposed on a surface of the first substrate facing the liquid crystal layer, the scanning electrode layer includes a plurality of scanning electrodes spaced apart from each other; and a second common electrode is disposed on one surface of the second substrate toward the liquid crystal layer;
  • the first substrate is disposed on a side of the liquid crystal layer with a first common electrode layer, the first common electrode layer and the scan electrode layer are located in different layers, and the first common electrode layer includes two adjacent a first common electrode opposite to a gap of the scan electrodes; the scan electrode layer and the first An insulating layer is disposed between the common electrode layers.
  • a first common electrode layer, an insulating layer, and a scan electrode layer are sequentially disposed on the first substrate along a direction of the first substrate toward the liquid crystal layer; or, in a direction of the first substrate toward the liquid crystal layer, the first A scan electrode layer, an insulating layer, and a first common electrode layer are sequentially disposed on the substrate.
  • At least one embodiment of the present invention also provides a display device including a display screen and any of the above-described polarization control panels located on the light exit side of the display screen.
  • At least one embodiment of the present invention further provides a method for fabricating a polarization control panel, comprising: forming a first common electrode layer on a first substrate, the first common electrode layer including a first common electrode; An insulating layer on the electrode layer; forming a scan electrode layer on the insulating layer, the scan electrode layer comprising a plurality of spaced apart scan electrodes, wherein a gap of each adjacent two scan electrodes is opposite to the first common electrode And forming a second common electrode layer on the second substrate; the first substrate and the second substrate are paired with the liquid crystal layer to form a polarizing control panel.
  • At least one embodiment of the present invention provides a method for fabricating another polarizing control panel, comprising: forming a scan electrode layer on a first substrate, the scan electrode layer comprising a plurality of spaced apart scan electrodes; forming a scan electrode An insulating layer on the layer; forming a first common electrode layer on the insulating layer, wherein the first common electrode layer includes a first common electrode, and the first common electrode is opposite to a gap of each adjacent two scan electrodes And forming a second common electrode layer on the second substrate; the first substrate and the second substrate are paired with the liquid crystal layer to form a polarization control panel.
  • FIG. 1 is a schematic structural view of a polarizing control panel
  • FIG. 2 is a schematic structural view of a first embodiment of a polarizing control panel of the present invention
  • FIG. 3 is a schematic structural view of a second embodiment of a polarizing control panel of the present invention.
  • FIG. 4 is a schematic structural view of a third embodiment of a polarizing control panel of the present invention.
  • FIG. 5 is a schematic flow chart of an embodiment of a method for fabricating a polarization control panel according to the present invention
  • 6a is a schematic structural view of a substrate after forming a first common electrode on a first substrate
  • 6b is a schematic structural view of a substrate after forming an insulating layer on the first substrate
  • 6c is a schematic structural view of a substrate after forming a scan electrode on a first substrate
  • FIG. 6d is a schematic top plan view of the substrate after the scan electrodes are formed on the first substrate.
  • FIG. 1 is a schematic structural view of a polarizing control panel.
  • the polarizing control panel includes a first substrate 1 and a second substrate 2 opposite to each other, and a liquid crystal layer 10 between the first substrate 1 and the second substrate 2.
  • a stripe-shaped scan electrode 3 (also referred to as a polarization control region electrode) is disposed on a surface of the first substrate 1 facing the liquid crystal layer 10, and a second common electrode 4 is disposed on a surface of the second substrate 2 facing the liquid crystal layer 10, and the second common electrode
  • the potential is zero potential.
  • the deflection of the liquid crystal molecules in the liquid crystal layer 10 is achieved by applying a scanning voltage on the scan electrodes 3, thereby achieving transmission or retardation of the polarized light.
  • the liquid crystal molecules are aligned in the rubbing direction of the alignment layer, and the rubbing direction of the alignment layer is 45 degrees from the polarizing control panel. Angle.
  • the rubbing direction represents the original arrangement position of the liquid crystal molecules in the off state.
  • the polarizing control panel does not leak light; after the scan electrodes are energized, the arrangement of the liquid crystal molecules is along the direction of the electric field, that is, the long axis of the liquid crystal molecules and the direction of the electric field. Consistent. In the sequential scanning process, the scanning electrode on the left side shown in FIG.
  • the scanning electrode 3 and the second common electrode 4 form an electric field in a vertical direction, on which the long axis and the vertical direction of the liquid crystal molecules
  • the direction of the straight electric field is the same;
  • the scanning electrode on the right side of FIG. 1 is the scanning line, the liquid crystal molecules are not affected by the electric field, and the alignment of the liquid crystal molecules is the same as the rubbing direction of the alignment layer, that is, at an angle of 45 degrees with the polarizing control panel,
  • the LCD looks shorter. Since the voltage between the current scanning line and the scanning line is different, a horizontal electric field is formed between the adjacent two scanning electrodes 3, and the direction of the horizontal electric field is different from the rubbing direction of the alignment layer by 45 degrees.
  • Liquid crystal molecules between two adjacent scanning electrodes are affected by the horizontal electric field, causing liquid crystal separation
  • the child leaves the original position and rotates 45 degrees, that is, the long axis of the liquid crystal molecules is in the same direction as the horizontal electric field (the liquid crystal molecules appear longer), and at this time, the liquid crystal molecules are in an off state and an on state, and therefore, the horizontal electric field Causes the rotation of the liquid crystal to cause the panel to leak light.
  • the liquid crystal is deflected due to the horizontal electric field existing between the scanning electrodes, so that the panel leaks light, thereby affecting the quality of the display screen.
  • At least one embodiment of the present invention provides a polarized light control panel, a method of fabricating the same, and a display device.
  • a first common electrode and an insulating layer are provided, the potential of the first common electrode being the same as the potential of the second common electrode and both being zero potential, thereby forming Scanning the electric field of the electrode to the first common electrode, and weakening the electric field between the adjacent two scanning electrodes, the horizontal electric field between the scanning electrodes is substantially shielded, and therefore, between the adjacent two scanning electrodes during scanning
  • the liquid crystal molecules in the region do not substantially rotate, and thus do not leak light, which improves the quality of the display screen.
  • FIG. 2 is a schematic structural view of a first embodiment of a polarization control panel.
  • the polarizing control panel includes a first substrate 1 and a second substrate 2 opposite to each other, and a liquid crystal layer 10 between the first substrate 1 and the second substrate 2.
  • a scanning electrode layer is disposed on a surface of the first substrate 1 facing the liquid crystal layer 10, the scanning electrode layer includes a plurality of scanning electrodes 3 spaced apart from each other; the second substrate 2 is disposed on a side of the liquid crystal layer 10 with a second common electrode 4; the first substrate 1 A first common electrode layer is disposed on one side of the liquid crystal layer 10, the first common electrode layer and the scan electrode layer are located in different layers, and the first common electrode layer includes a first common body opposite to the gap of each adjacent two scan electrodes 3.
  • the electrode 5 is provided with an insulating layer 6 between the scan electrode layer and the first common electrode layer.
  • the potential of the first common electrode 5 is the same as the potential of the second common electrode 4 and both are zero potential, thereby forming a scan electrode 3 to the electric field of the first common electrode 5, which weakens the electric field between the adjacent two scanning electrodes 3, and the horizontal electric field between the scanning electrodes 3 is substantially shielded. Therefore, the liquid crystal molecules between the adjacent two scanning electrodes are substantially not rotated, that is, the liquid crystal molecules are aligned and rubbed in the same direction, and the panel does not leak light. This embodiment improves the quality of the display screen.
  • the scanning electrode 3 on the left side is a current scanning line, and the scanning electrode and the second common electrode 4 form an electric field in a vertical direction, and liquid crystal molecules above the scanning electrode are arranged in an electric field in a vertical direction;
  • the scanning electrode 3 on the right side shown in 2 is the scanning line to be scanned, that is, will be scanned later.
  • the liquid crystal molecules are not affected by the electric field, and the liquid crystal molecules are aligned in the same direction as the alignment layer, that is, at an angle of 45 degrees with the polarizing control panel, so the liquid crystal looks shorter.
  • the first substrate 1 and the second substrate 2 may be, for example, a glass substrate; the first substrate 1 may be an array substrate, and the second substrate 2 may be a color film substrate.
  • the first common electrode layer, the insulating layer 6, and the scan electrode layer are sequentially disposed on the first substrate 1.
  • FIG. 3 is a schematic structural view of a second embodiment of the polarization control panel of the present invention.
  • the first substrate 1 is sequentially provided with a scan.
  • the first common electrode 5 may be, for example, a strip electrode having a width larger than a gap of the corresponding adjacent two scan electrodes 3.
  • the first common electrode 5 when the first common electrode 5 is a strip electrode, the first common electrode 5 may be a metal electrode.
  • the metal electrode is an opaque electrode that shields a portion of the light leakage. If the metal electrode has a reflective property, it may cause an abnormality in the display screen, and thus the width of the metal electrode may be designed according to the actual detection effect, for example, the gap is 5 ⁇ m. For example, the width of the metal electrode is 41 microns.
  • the first common electrode 5 may also be a transparent surface electrode covering the first substrate surface. . That is, when the first common electrode layer is located under the scan electrode layer, the first common electrode 5 may also be a transparent surface electrode.
  • the first common electrode 5 may also be a transparent electrode.
  • it may be an indium tin oxide electrode.
  • the material of the insulating layer 6 is, for example, silicon nitride.
  • the performance of the insulating layer is required to be high, so silicon nitride is selected.
  • At least one embodiment of the present invention also provides a display device including a display screen and being located on the display Any of the above-described polarization control panels on the light-emitting side.
  • the display device can also reduce light leakage and improve the quality of the display screen.
  • the display device may further include a quarter retardation film located on the light exiting side of the polarizing control panel, such that the linearly polarized light emitted from the polarizing control panel is converted into circularly polarized light, and the left and right eyeglasses are divided into left circularly polarized light and Glasses with right-handed circularly polarized light can be used to view three-dimensional images.
  • the display device may be any display device having a display function such as a television, a computer, a mobile phone, a watch, or the like.
  • At least one embodiment of the present invention further provides a method for fabricating a polarization control panel
  • FIG. 5 is a schematic flowchart of an embodiment of a method for fabricating a polarization control panel according to the present invention. The method includes the following steps:
  • Step 101 forming a first common electrode layer on the first substrate, the first common electrode layer including a first common electrode;
  • Step 102 forming an insulating layer on the first common electrode layer
  • Step 103 forming a scan electrode layer on the insulating layer, the scan electrode layer includes a plurality of spaced apart scan electrodes, wherein a gap of each adjacent two scan electrodes is opposite to the first common electrode;
  • Step 104 forming a second common electrode layer on the second substrate
  • Step 105 Perform a cell-assembly on the first substrate and the second substrate, and inject a liquid crystal layer to form a polarization control panel.
  • the step 104 may be completed before the step 101, that is, the first substrate and the second substrate may be separately fabricated, and then the first substrate and the second substrate which are respectively fabricated are paired.
  • At least one embodiment of the present invention further provides another method for fabricating a polarizing control panel, including the following steps:
  • a scan electrode layer Formed on the first substrate is a scan electrode layer, and the scan electrode layer includes a plurality of scan electrodes spaced apart;
  • first common electrode layer Forming a first common electrode layer on the insulating layer, wherein the first common electrode layer includes a first common electrode, and the first common electrode is opposite to a gap of each adjacent two scan electrodes;
  • the first substrate and the second substrate are paired with the liquid crystal layer to form a polarizing control panel.
  • the method for fabricating the polarization control panel according to the embodiment of the present invention will be described by taking the method for fabricating the first polarization control panel as an example.
  • the fabrication method is as follows.
  • FIG. 6a is a schematic structural view of a substrate after a first common electrode is formed on a first substrate.
  • a first common electrode layer is formed on at least one of the first substrates, and a first common electrode 5 is etched on the first common electrode layer; the first common electrode 5 is located in the polarization control area, first
  • the common electrode 5 may be a strip electrode opposite to the gap position of each adjacent two scan electrodes 3;
  • the first substrate 1 is an array substrate or a glass substrate; and the first common electrode 1 may be a transparent conductive electrode, and the material thereof It can be indium tin oxide.
  • FIG. 6b is a schematic view showing the structure of the substrate after the insulating layer 6 is formed on the first substrate 1.
  • an insulating layer 6 is formed on the first common electrode 5; the insulating layer 6 may be formed by chemical vapor deposition, and the insulating layer 6 may be made of silicon nitride.
  • FIG. 6c is a schematic view showing the structure of the substrate after the scan electrodes 3 are formed on the first substrate 1
  • FIG. 6d is a schematic plan view of the substrate after the scan electrodes 3 are formed on the first substrate 1.
  • a scan electrode layer is formed on the insulating layer 6, and a plurality of scanning electrodes 3 are arranged on the scan electrode layer; the material of the scan electrode 3 may also be indium tin oxide; The step is completed for the fabrication of the first substrate.
  • a second common electrode 4 is formed on the second substrate 2, the second common electrode 4 may be a transparent electrode, and the second substrate 2 may be a glass substrate having a black matrix; the completed first substrate 1 and the second substrate 2 are paired The liquid crystal layer 10 is dropped to form a polarization control panel.
  • Embodiments of the present invention devise the formation of a horizontal electric field between scan electrodes in an off state by designing a first common electrode above or below a scan electrode of a conventional polarization control panel, thereby avoiding the adjacent two scan electrodes.
  • the rotation of the liquid crystal molecules in the inter-regional area solves the light leakage of the panel and improves the quality of the display screen.

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Abstract

一种偏光控制面板及其制作方法和显示装置，偏光控制面板包括相对而置的第一基板（1）和第二基板（2），以及位于第一基板（1）和第二基板（2）之间的液晶层（10）。第一基板（1）朝向液晶层（10）的一面设置有扫描电极层，扫描电极层包括多条间隔分布的扫描电极（3）；第二基板（2）朝向液晶层（10）的一面设置有第二公共电极（4），第一基板（1）朝向液晶层（10）的一面设置有第一公共电极层，第一公共电极层与扫描电极层位于不同层，第一公共电极层包括与每相邻两个扫描电极（3）的间隙相对而置的第一公共电极（5）；扫描电极层和第一公共电极层之间设置有绝缘层（6）。偏光控制面板可以减少液晶旋转引起的漏光，进而提高显示画面的品质。

Description

偏光控制面板及其制作方法和显示装置 技术领域
本发明的实施例涉及一种偏光控制面板及其制作方法和显示装置。
背景技术
随着液晶显示技术的不断发展，三维(Three-Dimensional，3D)立体显示技术已经备受关注，成为显示领域的一个重要的前沿科技领域。眼镜式3D技术有三种主要的类型：色差式、偏光式和主动快门式。偏光式3D是利用光线的振动方向的原理来分解原始图像的，先把图像分为垂直向偏振光和水平向偏振光两组画面，然后3D眼镜左镜和右镜分别采用不同偏振方向的偏光镜片。这样人的左右眼就能接收两组画面，再经过大脑合成立体影像。
偏光式3D显示器包括液晶显示模组以及偏光控制面板(Polarization Control Panel，PCP)，其中偏光控制面板在关态(Off-status)下对液晶显示模组出射的偏振光起到λ/2相位延迟的作用，在开态(On-status)下起到保持原偏振性的作用。偏光控制面板的阵列基板的扫描电极从上到下分割成多条电极，扫描时从上到下多条电极依次改变为开态或关态，实现两眼能同时看见图像，实现无分辨率损失的3D效果。
发明内容
本发明至少一实施例提供一种偏光控制面板及其制作方法和显示装置，用以减少液晶旋转引起的漏光，进而提高显示画面的品质。
本发明至少一实施例提供一种偏光控制面板，包括：相对而置的第一基板和第二基板，以及位于所述第一基板和所述第二基板之间的液晶层。所述第一基板朝向所述液晶层的一面设置有扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极；所述第二基板朝向所述液晶层一面设置有第二公共电极；所述第一基板朝向所述液晶层一面设置有第一公共电极层，所述第一公共电极层与所述扫描电极层位于不同层，所述第一公共电极层包括与每相邻两个扫描电极的间隙相对而置的第一公共电极；所述扫描电极层和所述第 一公共电极层之间设置有绝缘层。
例如，沿第一基板朝向液晶层的方向，所述第一基板上依次设置有第一公共电极层、绝缘层和扫描电极层；或者，沿第一基板朝向液晶层的方向，所述第一基板上依次设置有扫描电极层、绝缘层和第一公共电极层。
本发明至少一实施例还提供一种显示装置，包括显示屏以及位于所述显示屏出光侧的上述任一种偏光控制面板。
本发明至少一实施例还提供一种偏光控制面板的制作方法，包括：形成位于第一基板上的第一公共电极层，所述第一公共电极层包括第一公共电极；形成位于第一公共电极层上的绝缘层；形成位于绝缘层上的扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极，其中，每相邻两个扫描电极的间隙与所述第一公共电极相对而置；形成位于第二基板上的第二公共电极层；将第一基板和第二基板进行对盒，滴注液晶层，形成偏光控制面板。
本发明至少一实施例还提供另一种偏光控制面板的制作方法，包括：形成位于第一基板上的是扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极；形成位于扫描电极层上的绝缘层；形成位于绝缘层上的第一公共电极层，其中，所述第一公共电极层包括第一公共电极，所述第一公共电极与每相邻两个扫描电极的间隙相对而置；形成位于第二基板上的第二公共电极层；将第一基板和第二基板对盒，滴注液晶层，形成偏光控制面板。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为一种偏光控制面板的结构示意图；
图2本发明偏光控制面板的第一实施例结构示意图；
图3为本发明偏光控制面板的第二实施例结构示意图；
图4为本发明偏光控制面板的第三实施例的结构示意图；
图5为本发明偏光控制面板的制作方法一实施例的流程示意图；
图6a为在第一基板上形成第一公共电极后的基板结构示意图；
图6b为在第一基板上形成绝缘层后的基板结构示意图；
图6c为在第一基板上形成扫描电极后的基板结构示意图；
图6d为在第一基板上形成扫描电极后的基板俯视结构示意图。
附图标记：
1-第一基板  2-第二基板  3-扫描电极  4-第二公共电极
5-第一公共电极  6-绝缘层  10-液晶层
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例的附图，对本发明实施例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发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1为一种偏光控制面板的结构示意图。所述偏光控制面板包括相对而置的第一基板1和第二基板2，以及位于第一基板1和第二基板2之间的液晶层10。第一基板1朝向液晶层10的一面设置有条形的扫描电极3(又称偏光控制区电极)，第二基板2朝向液晶层10的一面设置有第二公共电极4，第二公共电极的电位为零电位。通过在扫描电极3上施加扫描电压实现液晶层10中液晶分子的偏转，进而实现偏振光线的透射或延迟。在扫描电极3未施加扫描电压或相邻的扫描电极3之间的电压差为零时，液晶分子排列与取向层的摩擦(Rubbing)方向一致，取向层的摩擦方向与偏光控制面板呈45度夹角。该摩擦方向代表了液晶分子在关态下的原始排列位置，此时偏光控制面板不漏光；在扫描电极加电后，液晶分子的排列会沿电场方向，即液晶分子的长轴与电场的方向一致。在依次扫描过程中，图1所示左侧的扫描电极为当前扫描行，该扫描电极3与第二公共电极4形成竖直方向的电场，在该扫描电极上，液晶分子的长轴与竖直电场的方向一致；图1所示右侧的扫描电极为即将扫描行，液晶分子不受电场影响，液晶分子排列与取向层的摩擦方向一致，即与偏光控制面板有45度夹角，因此液晶看起来短一些。由于当前扫描行与即将扫描行之间的电压不同，因此在相邻的两个扫描电极3之间会形成一个水平方向的电场，该水平电场的方向与取向层的摩擦方向相差45度，相邻两个扫描电极间的液晶分子受该水平电场的影响，引起液晶分 子离开原始位置而发生45度的旋转，即液晶分子的长轴与水平电场的方向一致(液晶分子看起来较长)，此时液晶分子处于关态和开态之间，因此，该水平电场引起液晶的旋转而导致了面板漏光。
在上述结构之中，由于扫描电极之间存在的水平电场导致液晶偏转使得面板漏光，进而影响显示画面的品质。
本发明至少一实施例提供了一种偏光控制面板及其制作方法和显示装置。在本发明至少一实施例中，除了第二公共电极外，还提供了第一公共电极和绝缘层，第一公共电极的电位与第二公共电极的电位相同且均为零电位，由此形成扫描电极到第一公共电极的电场，而减弱了相邻的两个扫描电极之间的电场，扫描电极之间的水平电场基本被屏蔽了，因此，在扫描时相邻两个扫描电极之间区域的液晶分子基本不会发生旋转，进而不会漏光，这提高了显示画面的品质。以下举具体实施例对本发明作进一步详细的说明。
本发明至少一实施例提供一种偏光控制面板，图2为偏光控制面板的第一实施例结构示意图。如图2所示，所述偏光控制面板包括相对而置的第一基板1和第二基板2，以及位于第一基板1和第二基板2之间的液晶层10。第一基板1朝向液晶层10的一面设置有扫描电极层，扫描电极层包括多条间隔分布的扫描电极3；第二基板2朝向液晶层10一面设置有第二公共电极4；第一基板1朝向液晶层10一面设置有第一公共电极层，第一公共电极层与扫描电极层位于不同层，第一公共电极层包括与每相邻两个扫描电极3的间隙相对而置的第一公共电极5；扫描电极层和第一公共电极层之间设置有绝缘层6。
上述实施例中，由于在第一基板上增加了第一公共电极5和绝缘层6，第一公共电极5的电位与第二公共电极4的电位相同且均为零电位，由此形成扫描电极3到第一公共电极5的电场，这减弱了相邻的两个扫描电极3之间的电场，且扫描电极3之间的水平电场基本被屏蔽了。因此，相邻两个扫描电极之间的液晶分子基本不会发生旋转，即液晶分子排列和摩擦方向一致，那么面板不会漏光。本实施例提高了显示画面的品质。
如图2所示，左侧的扫描电极3为当前扫描行，该扫描电极与第二公共电极4形成竖直方向的电场，在该扫描电极上方的液晶分子沿竖直方向的电场排列；图2所示的右侧的扫描电极3为即将扫描行，即之后即将被扫描， 液晶分子不受电场影响，液晶分子排列与取向层的摩擦方向一致，即与偏光控制面板的有45度夹角，因此液晶看起来短一些。虽然当前扫描行与即将扫描行之间的电压不同，但由于增加了零电位的第一公共电极5，因此，左侧的扫描电极的电势线会朝向第一公共电极5，因此屏蔽了在相邻的两个扫描电极3之间的可能出现的水平方向的电场。这样，相邻两个扫描电极之间区域的液晶分子仍能与摩擦方向一致，液晶旋转而导致的面板漏光被防止，显示品质得到了提高。
在本发明至少一实施例中，第一基板1和第二基板2例如可以分别为玻璃基板；第一基板1可以为阵列基板，第二基板2可以为彩膜基板。
在第一公共电极层的结构设计中，可以采用以下两种方式：
第一种方式：参照图2所示，例如，沿第一基板1朝向液晶层10的方向，第一基板1上依次设置有第一公共电极层、绝缘层6和扫描电极层。
第二种方式：如图3所示，图3为本发明偏光控制面板的第二实施例结构示意图，例如，沿第一基板1朝向液晶层10的方向，第一基板1上依次设置有扫描电极层、绝缘层6和第一公共电极层。
参照图2和图3所示，在上述两种方式中，第一公共电极5例如可以为条形电极，该条形电极的宽度大于对应的相邻两个扫描电极3的间隙。
例如，当第一公共电极5为条形电极时，第一公共电极5可以为金属电极。金属电极为不透明电极，其可以屏蔽一部分漏光。如果金属电极具有反光的性能，则可能引起显示画面的异常，因此金属电极的宽度可根据实际检测效果来设计，例如间隙为5微米。例如，金属电极的宽度为41微米。
图4为本发明偏光控制面板的第三实施例的结构示意图，如图4所示，在上述第一种方式的基础上，第一公共电极5还可以为覆盖第一基板面的透明面电极。即当第一公共电极层位于扫描电极层下方时，第一公共电极5还可以为透明的面电极。
参照图2和图3所示，第一公共电极5还可以为透明电极。例如可以为氧化铟锡电极。
参照图2和图3所示，绝缘层6的材质例如为氮化硅。在偏光控制面板中，对绝缘层的性能要求较高，因此选用氮化硅。
本发明至少一实施例还提供一种显示装置，包括显示屏，以及位于显示 屏出光侧的上述任一种偏光控制面板。
由于上述任一种偏光控制面板可以减少漏光，因此该显示装置也可以减少漏光，提高显示画面的品质。该显示装置还可以包括位于偏光控制面板的出光侧的四分之一相位差膜片，使得从偏光控制面板射出的线偏振光转化为圆偏振光，采用左右眼镜片分为左旋圆偏振光和右旋圆偏振光的眼镜即可实现观看三维图像。
所述的显示装置可以为电视、电脑、手机、手表等任何具有显示功能的显示装置。
本发明至少一实施例还提供一种偏光控制面板的制作方法，图5为本发明偏光控制面板的制作方法一实施例的流程示意图，所述制作方法包括如下步骤：
步骤101、形成位于第一基板上的第一公共电极层，第一公共电极层包括第一公共电极；
步骤102、形成位于第一公共电极层上的绝缘层；
步骤103、形成位于绝缘层上的扫描电极层，扫描电极层包括多条间隔分布的扫描电极，其中，每相邻两个扫描电极的间隙与第一公共电极相对而置；
步骤104、形成位于第二基板上的第二公共电极层；
步骤105、将第一基板和第二基板进行对盒(cell-assembly)，滴注液晶层，形成偏光控制面板。
在上述制作方法中，步骤104可以在步骤101之前完成，即可以首先分别制作第一基板和第二基板，再将分别制作完成的第一基板和第二基板对盒。
本发明至少一实施例还提供另一种偏光控制面板的制作方法，包括如下步骤：
形成位于第一基板上的是扫描电极层，扫描电极层包括多条间隔分布的扫描电极；
形成位于扫描电极层上的绝缘层；
形成位于绝缘层上的第一公共电极层，其中，第一公共电极层包括第一公共电极，第一公共电极与每相邻两个扫描电极的间隙相对而置；
形成位于第二基板上的第二公共电极层；
将第一基板和第二基板对盒，滴注液晶层，形成偏光控制面板。
以上述的第一种偏光控制面板的制作方法为例，说明本发明实施例的偏光控制面板的制作方法，所述制作方法如下所述。
图6a为在第一基板上形成第一公共电极后的基板结构示意图。如图6a所示，在第一基板至少一上形成第一公共电极层，在第一公共电极层上刻蚀出第一公共电极5；所述第一公共电极5位于偏光控制区，第一公共电极5可以为条形电极，与下述的每相邻两个扫描电极3的间隙位置相对；第一基板1为阵列基板或玻璃基板；第一公共电极1可以为透明导电电极，其材质可以为氧化铟锡。
图6b为在第一基板1上形成绝缘层6后的基板结构示意图。如图6b所示，在第一公共电极5之上形成绝缘层6；绝缘层6可以采用化学气相沉积的方法形成，绝缘层6的材质可以为氮化硅。
图6c为在第一基板1上形成扫描电极3后的基板结构示意图，图6d为在第一基板1上形成扫描电极3后的基板俯视结构示意图。如图6c和图6d所示，在绝缘层6之上形成扫描电极层，在扫描电极层刻蚀出多个间隔分布的扫描电极3；扫描电极3的材质也可以为氧化铟锡；通过上述步骤对第一基板的制作完成。
第二基板2上制作第二公共电极4，第二公共电极4可以为透明电极，第二基板2可以为具有黑矩阵的玻璃基板；将制作完成的第一基板1和第二基板2对盒，滴注液晶层10，形成偏光控制面板。
本发明的实施例通过在通常的偏光控制面板的扫描电极的上方或下方设计了第一公共电极，消弱了在关态下扫描电极间形成水平电场，从而避免了相邻两个扫描电极之间区域的液晶分子的旋转，从而解决了面板的漏光，提高了显示画面的品质。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年6月16日递交的中国专利申请第201410267458.3号的优先权，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。

Claims (10)

  1. 一种偏光控制面板，包括：
    相对而置的第一基板和第二基板，以及
    位于所述第一基板和所述第二基板之间的液晶层，
    其中，所述第一基板朝向所述液晶层的一面设置有扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极；
    所述第二基板朝向所述液晶层一面设置有第二公共电极；
    所述第一基板朝向所述液晶层一面设置有第一公共电极层，所述第一公共电极层与所述扫描电极层位于不同层，所述第一公共电极层包括与每相邻两个扫描电极的间隙相对而置的第一公共电极；
    所述扫描电极层和所述第一公共电极层之间设置有绝缘层。
  2. 如权利要求1所述的偏光控制面板，其中，沿所述第一基板朝向液晶层的方向，所述第一基板上依次设置有所述第一公共电极层、绝缘层和扫描电极层。
  3. 如权利要求1所述的偏光控制面板，其中，沿所述第一基板朝向液晶层的方向，所述第一基板上依次设置有扫描电极层、绝缘层和第一公共电极层。
  4. 如权利要求1-3任一项所述的偏光控制面板，其中，所述第一公共电极为条形电极，所述条形电极的宽度大于对应的相邻两个扫描电极的间隙。
  5. 如权利要求4所述的偏光控制面板，其中，所述第一公共电极为金属电极。
  6. 如权利要求1-4任一项所述的偏光控制面板，其中，所述第一公共电极为透明电极。
  7. 如权利要求1-6任一项所述的偏光控制面板，其中，所述绝缘层的材质为氮化硅。
  8. 一种显示装置，包括：
    显示屏，
    位于所述显示屏出光侧的如权利要求1-7任一项所述的偏光控制面板。
  9. 一种偏光控制面板的制作方法，包括：
    形成位于第一基板上的第一公共电极层，所述第一公共电极层包括第一公共电极；
    形成位于第一公共电极层上的绝缘层；
    形成位于绝缘层上的扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极，其中，每相邻两个扫描电极的间隙与所述第一公共电极相对而置；
    形成位于第二基板上的第二公共电极层；
    将第一基板和第二基板进行对盒，滴注液晶层，形成偏光控制面板。
  10. 一种偏光控制面板的制作方法，包括：
    形成位于第一基板上的扫描电极层，所述扫描电极层包括多条间隔分布的扫描电极；
    形成位于扫描电极层上的绝缘层；
    形成位于绝缘层上的第一公共电极层，其中，所述第一公共电极层包括第一公共电极，所述第一公共电极与每相邻两个扫描电极的间隙相对而置；
    形成位于第二基板上的第二公共电极层；
    将第一基板和第二基板对盒，滴注液晶层，形成偏光控制面板。
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