WO2016161696A1 - 取向层的摩擦取向方法 - Google Patents

取向层的摩擦取向方法 Download PDF

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Publication number
WO2016161696A1
WO2016161696A1 PCT/CN2015/079481 CN2015079481W WO2016161696A1 WO 2016161696 A1 WO2016161696 A1 WO 2016161696A1 CN 2015079481 W CN2015079481 W CN 2015079481W WO 2016161696 A1 WO2016161696 A1 WO 2016161696A1
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Prior art keywords
rubbing
alignment layer
alignment
layer according
substrate
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English (en)
French (fr)
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谢畅
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to US14/763,820 priority Critical patent/US10120240B2/en
Publication of WO2016161696A1 publication Critical patent/WO2016161696A1/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
    • G02F1/01—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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133784—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by rubbing
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • G02F1/133723—Polyimide, polyamide-imide

Definitions

  • the present invention relates to the field of liquid crystal display process, and more particularly to a method of rubbing orientation of an alignment layer.
  • LCD Liquid crystal display
  • PDA personal digital assistant
  • digital camera computer screen or laptop screen.
  • liquid crystal displays which include a casing, a liquid crystal display panel disposed in the casing, and a backlight module disposed in the casing.
  • the structure of the liquid crystal display panel is composed of a color filter substrate (CF), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer filled between the two substrates (Liquid
  • the crystal layer is constructed by controlling the rotation of the liquid crystal molecules of the liquid crystal layer by applying a driving voltage on the two glass substrates, and refracting the light of the backlight module to produce a picture.
  • an overcoat layer (Over Coat) which has been subjected to the alignment treatment is provided as an alignment layer on the side of the CF substrate and the TFT substrate which are close to the liquid crystal layer.
  • the oriented group in the oriented layer has a strong interaction between the liquid crystal molecules and the liquid crystal molecules, and anchors the liquid crystal molecules to orient the liquid crystal molecules at a polar angle inclined with respect to the surface of the alignment layer. Arrangement, this polar angle is the pretilt angle of the liquid crystal molecules.
  • the pretilt angle can control the orientation of the liquid crystal molecules, prevent the occurrence of anti-dip domains in the liquid crystal layer, thereby optimizing the display effect.
  • the alignment treatment of the alignment layer is an important process by which the liquid crystal molecules are arranged in a specific direction and angle.
  • the existing orientation layer orientation methods are mostly rubbing.
  • a conventional liquid crystal display panel has a plurality of pixels arranged in a matrix, and each pixel includes three sub-pixels of red (R, R), green (Green), and blue (Blue). Since the R, G, and B color resists used in the prior art are all absorption type color resists, when light is incident, only light of a corresponding color can be transmitted, and light of the other two colors is absorbed, so that the display panel The light transmittance is low. Thus, a display technique of forming four sub-pixels of red, green, blue, and white (W, W) in one pixel has appeared. Among them, the W sub-pixel does not add color resistance, allowing more backlight to pass, thereby improving the light transmittance and brightness of the liquid crystal display panel.
  • RGBW technology uses the same thickness of color resistance, and the W sub-pixels have no color resistance, so the entire pixel and the black matrix 110 are integrally coated.
  • the portion of the alignment layer 120 corresponding to the W sub-pixel may have a recessed region. Since the recessed region makes the surface of the alignment layer 120 uneven, the orientation layer 120 is formed by using a conventional single rubbing method.
  • a dead angle that the rubbing roller 300 does not rub in the back side of the rubbing direction may occur, and there is a rubbing shadow 130, that is, a region corresponding to the rubbing shadow 130 is not subjected to the rubbing alignment treatment, resulting in
  • the liquid crystal orientation in the rubbing shadow 130 is disordered, thereby causing a dark state light leakage problem of the liquid crystal display panel, and reducing the contrast of the liquid crystal display panel.
  • An object of the present invention is to provide a method for rubbing orientation of an alignment layer, which can effectively eliminate frictional shadows, avoid unevenness of rubbing orientation, and disorder liquid crystal alignment, so that liquid crystals are aligned neatly, thereby suppressing dark light leakage of the liquid crystal display panel and improving contrast. .
  • the present invention provides a method of rubbing orientation of an alignment layer, comprising the steps of:
  • Step 1 Providing a substrate, and coating an alignment layer on the substrate;
  • Step 2 providing a friction roller, and using the friction roller to perform the first rubbing orientation on the alignment layer according to the first rubbing direction;
  • Step 3 Perform a second rubbing orientation on the alignment layer according to a second rubbing direction using the rubbing roller, the second rubbing direction being opposite to the first rubbing direction.
  • Said step 3 can eliminate the frictional shadows produced in step 2.
  • the steps 2 and 3 can be repeated multiple times.
  • the center of the friction roller is at the same horizontal plane.
  • the substrate is a CF substrate, and the CF substrate has a plurality of pixels arranged in an array, each pixel includes four sub-pixels of red, green, blue, and blank; and the red, green, and blue sub-pixels are provided with the same thickness.
  • a color resistance corresponding to the blank sub-pixel being a blank area, and a black matrix spacing the red, green, blue, and blank sub-pixels apart;
  • the alignment layer is coated on the red, green, blue, blank sub-pixels and a black matrix, and the alignment layer forms a recessed region above the blank sub-pixel.
  • the friction roller comprises a roller body and a friction cloth fixed on a peripheral surface of the roller body, and the friction cloth is used to frictionally orient the alignment layer.
  • the material of the rubbing cloth is a fiber.
  • the material of the rubbing cloth is nylon.
  • the material of the rubbing cloth is lint.
  • the material of the alignment layer is polyimide.
  • the invention also provides a method for rubbing orientation of an orientation layer, comprising the following steps:
  • Step 1 Providing a substrate, and coating an alignment layer on the substrate;
  • Step 2 providing a friction roller, and using the friction roller to perform the first rubbing orientation on the alignment layer according to the first rubbing direction;
  • Step 3 using the friction roller to perform a second rubbing orientation on the alignment layer according to a second rubbing direction, the second rubbing direction being opposite to the first rubbing direction;
  • step 3 can eliminate the friction shadow generated in step 2;
  • step 2 and step 3 may be repeated multiple times
  • the center of the friction roller is at the same horizontal plane
  • the substrate is a CF substrate, and the CF substrate has a plurality of pixels arranged in an array, each pixel includes four sub-pixels of red, green, blue, and blank; corresponding to the red, green, and blue sub-pixels. a color resistance of the same thickness, corresponding to the blank sub-pixel being a blank area, and a black matrix spacing the red, green, blue, and blank sub-pixels;
  • the alignment layer is coated on the red, green, blue, blank sub-pixels and a black matrix, and the alignment layer forms a recessed region above the blank sub-pixel;
  • the friction roller includes a roller body and a friction cloth fixed on a peripheral surface of the roller body, and the friction cloth is used to frictionally orient the alignment layer.
  • the present invention provides a method for rubbing an orientation layer, which performs a first rubbing orientation on the alignment layer according to a first rubbing direction, and then performs a second rubbing direction in a second rubbing direction opposite to the first rubbing direction.
  • the secondary rubbing orientation can effectively eliminate the rubbing shadow, avoid the uneven rubbing orientation and the disorder of the liquid crystal orientation, so that the liquid crystals are arranged neatly, thereby suppressing the occurrence of the dark state light leakage phenomenon of the liquid crystal display panel and improving the contrast.
  • FIG. 1 is a schematic structural view of a CF substrate in a conventional liquid crystal display panel
  • FIG. 2 is a flow chart of a method of rubbing orientation of an alignment layer of the present invention
  • Step 3 is a schematic view of Step 1 of the rubbing alignment method of the alignment layer of the present invention.
  • step 2 is a schematic view of step 2 of the rubbing alignment method of the alignment layer of the present invention.
  • Figure 5 is a schematic view showing the step 3 of the rubbing alignment method of the alignment layer of the present invention.
  • Fig. 6 is a schematic view showing the rubbing alignment method of the alignment layer of the present invention after the rubbing orientation is completed.
  • the present invention provides a method for rubbing orientation of an alignment layer, comprising the following steps:
  • Step 1 As shown in FIG. 3, a substrate 10 is provided on which an alignment layer 4 is coated.
  • the substrate 10 is a CF substrate having a plurality of pixels arranged in an array, and each pixel includes four sub-pixels of red R, green G, blue B, and blank W.
  • each pixel includes four sub-pixels of red R, green G, blue B, and blank W.
  • a color resistance of the same thickness is provided, corresponding to the blank W sub-pixel as a blank area, and a black matrix 3 will be the red R, green G, blue B, and blank W
  • the sub-pixels are spaced apart.
  • the alignment layer 4 is coated on the red R, green G, blue B, blank W sub-pixels, and black matrix 3, and the alignment layer 4 forms a recessed region 41 above the blank W sub-pixel.
  • the material of the alignment layer 4 is polyimide (PI).
  • Step 2 As shown in FIG. 4, a friction roller 5 is provided, and the orientation layer 4 is subjected to the first rubbing orientation in the first rubbing direction using the rubbing roller 5.
  • the friction roller 5 includes a roller body 51 and a friction cloth 53 fixed to an outer circumferential surface of the roller body 51.
  • the friction cloth 53 is used to frictionally orient the alignment layer 4 by the roller body 51.
  • the material of the rubbing cloth 53 may be fiber, nylon or cotton linters.
  • the friction shadow 42 is easily generated, that is, the friction shadow 42 corresponds to The region is not subjected to the first rubbing orientation, and the liquid crystal in the rubbing shadow 42 is temporarily in a disordered state.
  • Step 3 as shown in FIG. 5, using the friction roller 5 to perform a second rubbing orientation on the alignment layer 4 according to a second rubbing direction, the second rubbing direction being opposite to the first rubbing direction, that is, The angle between the second rubbing direction and the first rubbing direction is 180°.
  • the friction roller 5 can perform frictional orientation on the region corresponding to the friction shadow 42 in the above step 2, eliminating step 2 The dead end of the dead.
  • the center of the friction roller 5 is at the same horizontal plane, so the direction of the second rubbing orientation and the first rubbing orientation are also in the same horizontal plane, only the direction.
  • the orientation angle of the alignment layer 4 is not affected.
  • FIG. 6 after the second rubbing orientation of the step 3 is performed, the rubbing shadow 42 is effectively eliminated, and the uneven rubbing orientation and the liquid crystal orientation disorder at the dead corner left in the above step 2 are avoided, so that the liquid crystal is neat. Arranged to suppress the occurrence of dark light leakage of the liquid crystal display panel and improve contrast.
  • steps 2 and 3 can also be repeated multiple times according to the actual production needs.
  • the alignment layer is subjected to the first rubbing orientation according to the first rubbing direction, and the second rubbing orientation is performed according to the second rubbing direction opposite to the first rubbing direction.
  • the frictional shadow can be effectively eliminated, the unevenness of the rubbing orientation and the disorder of the liquid crystal orientation are avoided, and the liquid crystals are arranged neatly, thereby suppressing the occurrence of dark light leakage of the liquid crystal display panel and improving the contrast.

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

Abstract

一种取向层的摩擦取向方法，包括如下步骤：步骤1、提供基板（10），在所述基板（10）上涂覆取向层（4）；步骤2、提供摩擦滚轮（5），使用所述摩擦滚轮（5）按照第一摩擦方向对所述取向层（4）进行第一次摩擦取向；步骤3、使用所述摩擦滚轮（5）按照第二摩擦方向对所述取向层（4）进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反。该取向层的摩擦取向方法能够有效消除摩擦阴影，避免摩擦取向不均匀和液晶取向紊乱，使得液晶整齐排列，从而抑制液晶显示面板暗态漏光现象的产生，提高对比度。

Description

取向层的摩擦取向方法 技术领域
本发明涉及液晶显示器制程领域，尤其涉及一种取向层的摩擦取向方法。
背景技术
液晶显示器(Liquid Crystal Display，LCD)具有机身薄、省电、无辐射等众多优点，得到了广泛的应用。如：液晶电视、移动电话、个人数字助理(PDA)、数字相机、计算机屏幕或笔记本电脑屏幕等。
现有市场上的液晶显示器大部分为背光型液晶显示器，其包括壳体、设于壳体内的液晶显示面板及设于壳体内的背光模组。
通常，液晶显示面板的结构是由一彩色滤光片基板(Color Filter，CF)、一薄膜晶体管阵列基板(Thin Film Transistor Array Substrate，TFT Array Substrate)以及一填充于两基板间的液晶层(Liquid Crystal Layer)所构成，其工作原理是通过在两片玻璃基板上施加驱动电压来控制液晶层的液晶分子的旋转，将背光模组的光线折射出来产生画面。
为了使液晶分子排列较规则，在CF基板与TFT基板靠近液晶层的一侧分别设有经过了取向处理的外覆层(Over Coat)作为取向层。该经取向处理过的取向层中的支链基团与液晶分子间的作用力比较强，对液晶分子有锚定作用，能够使液晶分子在相对于取向层表面倾斜的某一极角上取向排列，这一极角就是液晶分子的预倾角。预倾角可控制液晶分子的取向，防止液晶层中反倾畴的出现，从而优化显示效果。在液晶显示面板的制作过程中，对取向层进行取向处理是一项重要工艺，通过该取向工艺来实现液晶分子按照特定的方向与角度排列。现有的取向层取向方法多以摩擦(Rubbing)为主。
传统的液晶显示面板具有多个呈矩阵式排列的像素，每一像素又包括红(Red，R)、绿(Green，G)、蓝(Blue，B)三个子像素。由于现有技术中所采用的R、G、B色阻都是吸收型色阻，当光线入射时，只有相应颜色的光才能透过，而另外两种颜色的光均被吸收，使得显示面板的透光率较低。由此，出现了在一个像素内形成红、绿、蓝、空白(White，W)四个子像素的显示技术。其中，W子像素不添加色阻，允许更多的背光通过，从而能够提高液晶显示面板的透光率与亮度。
RGBW技术的优势是提升背光的利用率，节省功耗，降低成本，并且在不降低分辨率或增加功耗使用的情况下，获得更高的亮度水平。但是，如图1所示，在液晶显示面板的CF基板100一侧，RGB子像素会使用相同厚度的色阻，而W子像素没有色阻，所以在各个像素及黑色矩阵110上整体涂覆一层取向层120后，取向层120对应覆盖在W子像素上的部分会出现凹陷区域，由于凹陷区域使得取向层120的表面不平坦，采用现有的单次摩擦的方式对取向层120做摩擦取向处理时，在凹陷区域内沿摩擦方向的背侧会产生摩擦滚轮300摩擦不到的死角，存在摩擦阴影(Rubbing Shadow)130，即摩擦阴影130对应的区域没有进行摩擦取向处理，导致处于摩擦阴影130内的液晶取向紊乱，从而造成液晶显示面板的暗态漏光问题，并降低了液晶显示面板的对比度。
发明内容
本发明的目的在于提供一种取向层的摩擦取向方法，能够有效消除摩擦阴影，避免摩擦取向不均匀和液晶取向紊乱，使得液晶整齐排列，从而抑制液晶显示面板暗态漏光现象的产生，提高对比度。
为实现上述目的，本发明提供一种取向层的摩擦取向方法，包括如下步骤：
步骤1、提供基板，在所述基板上涂覆取向层；
步骤2、提供摩擦滚轮，使用所述摩擦滚轮按照第一摩擦方向对所述取向层进行第一次摩擦取向；
步骤3、使用所述摩擦滚轮按照第二摩擦方向对所述取向层进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反。
所述步骤3能够消除步骤2产生的摩擦阴影。
所述步骤2、与步骤3可重复进行多次。
在所述步骤2与步骤3中，所述摩擦滚轮的中心处于同一水平面。
所述基板为CF基板，该CF基板具有多个呈阵列式排布的像素，每一像素包括红、绿、蓝、空白四个子像素；对应所述红、绿、蓝子像素设有相同厚度的色阻，对应所述空白子像素为空白区域，一黑色矩阵将所述红、绿、蓝、空白子像素间隔开；
所述取向层涂覆于所述红、绿、蓝、空白子像素及黑色矩阵上，且所述取向层在所述空白子像素上方形成凹陷区域。
所述摩擦滚轮包括滚轮本体、及固定于所述滚轮本体外周面的摩擦布，通过所述滚轮本体带动所述摩擦布对所述取向层进行摩擦取向。
所述摩擦布的材料为纤维。
所述摩擦布的材料为尼龙。
所述摩擦布的材料为棉绒。
所述取向层的材料为聚酰亚胺。
本发明还提供一种取向层的摩擦取向方法，包括如下步骤：
步骤1、提供基板，在所述基板上涂覆取向层；
步骤2、提供摩擦滚轮，使用所述摩擦滚轮按照第一摩擦方向对所述取向层进行第一次摩擦取向；
步骤3、使用所述摩擦滚轮照第二摩擦方向对所述取向层进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反；
其中，所述步骤3能够消除步骤2产生的摩擦阴影；
其中，所述步骤2、与步骤3可重复进行多次；
其中，在所述步骤2与步骤3中，所述摩擦滚轮的中心处于同一水平面；
其中，所述基板为CF基板，该CF基板具有多个呈阵列式排布的像素，每一像素包括红、绿、蓝、空白四个子像素；对应所述红、绿、蓝子像素设有相同厚度的色阻，对应所述空白子像素为空白区域，一黑色矩阵将所述红、绿、蓝、空白子像素间隔开；
所述取向层涂覆于所述红、绿、蓝、空白子像素及黑色矩阵上，且所述取向层在所述空白子像素上方形成凹陷区域；
其中，所述摩擦滚轮包括滚轮本体、及固定于所述滚轮本体外周面的摩擦布，通过所述滚轮本体带动所述摩擦布对所述取向层进行摩擦取向。
本发明的有益效果：本发明提供的一种取向层的摩擦取向方法，按照第一摩擦方向对取向层进行第一次摩擦取向，再按照与第一摩擦方向相反的第二摩擦方向进行第二次摩擦取向，能够有效消除摩擦阴影，避免摩擦取向不均匀和液晶取向紊乱，使得液晶整齐排列，从而抑制液晶显示面板暗态漏光现象的产生，提高对比度。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图说明
下面结合附图，通过对本发明的具体实施方式详细描述，将使本发明的技术方案及其他有益效果显而易见。
附图中，
图1为现有的液晶显示面板中CF基板的结构示意图；
图2为本发明的取向层的摩擦取向方法的流程图；
图3为本发明的取向层的摩擦取向方法的步骤1的示意图；
图4为本发明的取向层的摩擦取向方法的步骤2的示意图；
图5为本发明的取向层的摩擦取向方法的步骤3的示意图；
图6为本发明的取向层的摩擦取向方法完成摩擦取向后的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2，本发明提供一种取向层的摩擦取向方法，包括如下步骤：
步骤1、如图3所示，提供基板10，在所述基板10上涂覆取向层4。
具体地，所述基板10为CF基板，该CF基板具有多个呈阵列式排布的像素，每一像素包括红R、绿G、蓝B、空白W四个子像素。对应所述红R、绿G、蓝B子像素设有相同厚度的色阻，对应所述空白W子像素为空白区域，一黑色矩阵3将所述红R、绿G、蓝B、空白W子像素间隔开。
所述取向层4涂覆于所述红R、绿G、蓝B、空白W子像素及黑色矩阵3上，且所述取向层4在所述空白W子像素上方形成凹陷区域41。
所述取向层4的材料为聚酰亚胺(PI)。
步骤2、如图4所示，提供摩擦滚轮5，使用所述摩擦滚轮5按照第一摩擦方向对所述取向层4进行第一次摩擦取向。
具体地，所述摩擦滚轮5包括滚轮本体51、及固定于所述滚轮本体51外周面的摩擦布53，通过所述滚轮本体51带动所述摩擦布53对所述取向层4进行摩擦取向。
所述摩擦布53的材料可以是纤维、尼龙或棉绒。
在进行第一次摩擦取向后，由于在所述凹陷区域41内沿所述第一摩擦方向的背侧存在摩擦滚轮5摩擦不到的死角，从而很容易产生摩擦阴影42，即摩擦阴影42对应的区域没有进行第一次摩擦取向，处于摩擦阴影42内的液晶暂时处于取向紊乱状态。
步骤3、如图5所示，使用所述摩擦滚轮5按照第二摩擦方向对所述取向层4进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反，即所述第二摩擦方向与所述第一摩擦方向的夹角为180°。所述摩擦滚轮5能够对上述步骤2中摩擦阴影42对应的区域进行摩擦取向，消除了步骤2 遗留的死角。
值得一提的是，在该步骤3与上述步骤2中，所述摩擦滚轮5的中心处于同一水平面，因而所述第二次摩擦取向与第一次摩擦取向的方向也处于同一水平面，只是方向相反，并不影响取向层4的取向角度。如图6所示，在进行完步骤3的第二次摩擦取向后，所述摩擦阴影42得以有效消除，避免了上述步骤2遗留的死角处的摩擦取向不均匀和液晶取向紊乱，使得液晶整齐排列，从而抑制液晶显示面板暗态漏光现象的产生，提高对比度。
当然，所述步骤2与步骤3也可按实际生产需要重复进行多次。
综上所述，本发明的取向层的摩擦取向方法，按照第一摩擦方向对取向层进行第一次摩擦取向，再按照与第一摩擦方向相反的第二摩擦方向进行第二次摩擦取向，能够有效消除摩擦阴影，避免摩擦取向不均匀和液晶取向紊乱，使得液晶整齐排列，从而抑制液晶显示面板暗态漏光现象的产生，提高对比度。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明后附的权利要求的保护范围。

Claims (15)

  1. 一种取向层的摩擦取向方法，包括如下步骤：
    步骤1、提供基板，在所述基板上涂覆取向层；
    步骤2、提供摩擦滚轮，使用所述摩擦滚轮按照第一摩擦方向对所述取向层进行第一次摩擦取向；
    步骤3、使用所述摩擦滚轮照第二摩擦方向对所述取向层进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反。
  2. 如权利要求1所述的取向层的摩擦取向方法，其中，所述步骤3能够消除步骤2产生的摩擦阴影。
  3. 如权利要求1所述的取向层的摩擦取向方法，其中，所述步骤2、与步骤3可重复进行多次。
  4. 如权利要求1所述的取向层的摩擦取向方法，其中，在所述步骤2与步骤3中，所述摩擦滚轮的中心处于同一水平面。
  5. 如权利要求1所述的取向层的摩擦取向方法，其中，所述基板为CF基板，该CF基板具有多个呈阵列式排布的像素，每一像素包括红、绿、蓝、空白四个子像素；对应所述红、绿、蓝子像素设有相同厚度的色阻，对应所述空白子像素为空白区域，一黑色矩阵将所述红、绿、蓝、空白子像素间隔开；
    所述取向层涂覆于所述红、绿、蓝、空白子像素及黑色矩阵上，且所述取向层在所述空白子像素上方形成凹陷区域。
  6. 如权利要求1所述的取向层的摩擦取向方法，其中，所述摩擦滚轮包括滚轮本体、及固定于所述滚轮本体外周面的摩擦布，通过所述滚轮本体带动所述摩擦布对所述取向层进行摩擦取向。
  7. 如权利要求6所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为纤维。
  8. 如权利要求6所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为尼龙。
  9. 如权利要求6所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为棉绒。
  10. 如权利要求1所述的取向层的摩擦取向方法，其中，所述取向层的材料为聚酰亚胺。
  11. 一种取向层的摩擦取向方法，包括如下步骤：
    步骤1、提供基板，在所述基板上涂覆取向层；
    步骤2、提供摩擦滚轮，使用所述摩擦滚轮按照第一摩擦方向对所述取向层进行第一次摩擦取向；
    步骤3、使用所述摩擦滚轮照第二摩擦方向对所述取向层进行第二次摩擦取向，所述第二摩擦方向与所述第一摩擦方向相反；
    其中，所述步骤3能够消除步骤2产生的摩擦阴影；
    其中，所述步骤2、与步骤3可重复进行多次；
    其中，在所述步骤2与步骤3中，所述摩擦滚轮的中心处于同一水平面；
    其中，所述基板为CF基板，该CF基板具有多个呈阵列式排布的像素，每一像素包括红、绿、蓝、空白四个子像素；对应所述红、绿、蓝子像素设有相同厚度的色阻，对应所述空白子像素为空白区域，一黑色矩阵将所述红、绿、蓝、空白子像素间隔开；
    所述取向层涂覆于所述红、绿、蓝、空白子像素及黑色矩阵上，且所述取向层在所述空白子像素上方形成凹陷区域；
    其中，所述摩擦滚轮包括滚轮本体、及固定于所述滚轮本体外周面的摩擦布，通过所述滚轮本体带动所述摩擦布对所述取向层进行摩擦取向。
  12. 如权利要求11所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为纤维。
  13. 如权利要求11所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为尼龙。
  14. 如权利要求11所述的取向层的摩擦取向方法，其中，所述摩擦布的材料为棉绒。
  15. 如权利要求11所述的取向层的摩擦取向方法，其中，所述取向层的材料为聚酰亚胺。
PCT/CN2015/079481 2015-04-07 2015-05-21 取向层的摩擦取向方法 Ceased WO2016161696A1 (zh)

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