WO2020186542A1 - 配向膜的制作方法及配向膜 - Google Patents

配向膜的制作方法及配向膜 Download PDF

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Publication number
WO2020186542A1
WO2020186542A1 PCT/CN2019/079662 CN2019079662W WO2020186542A1 WO 2020186542 A1 WO2020186542 A1 WO 2020186542A1 CN 2019079662 W CN2019079662 W CN 2019079662W WO 2020186542 A1 WO2020186542 A1 WO 2020186542A1
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Prior art keywords
area
alignment film
substrate
inkjet printing
single drop
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PCT/CN2019/079662
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English (en)
French (fr)
Inventor
赵永超
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Publication of WO2020186542A1 publication Critical patent/WO2020186542A1/zh
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • 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

Definitions

  • the present invention relates to the field of display technology, in particular to a manufacturing method of an alignment film and an alignment film.
  • Liquid Crystal Display has many advantages such as thin body, power saving, and no radiation, and has been widely used.
  • liquid crystal displays are passive light-emitting devices, and the liquid crystal material itself does not emit light. Therefore, most of the existing liquid crystal displays on the market are backlight liquid crystal displays, which include liquid crystal display panels and backlight modules (backlight module).
  • the working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. By applying a driving voltage on the two glass substrates, the liquid crystal molecules are controlled to change direction, and the light from the backlight module is refracted to produce images.
  • the LCD panel is made of color filter film (Color Filter, CF) substrate, thin film transistor (Thin Film Transistor, TFT) array substrate, liquid crystal (LC) sandwiched between the color filter film substrate and the thin film transistor array substrate, and a sealant frame (Sealant).
  • an alignment film (PI, namely polyimide) is usually first fabricated on a thin film transistor (TFT) array substrate and a color filter film (CF) substrate, and then Coat the sealing sealant on the thin film transistor array substrate and drop the liquid crystal, then bond the thin film transistor array substrate and the color filter film substrate in a vacuum state, and finally cure the seal sealant by ultraviolet irradiation to complete the thin film transistor array substrate And color filter film substrate packaging.
  • PI namely polyimide
  • alignment films There are mainly two ways to make alignment films. One is to transfer the alignment film using a printing plate, the other is to make the alignment film by inkjet printing, and the alignment film is made by inkjet printing. No printing plate is required, the graphics are directly input into the computer, and the alignment film solution is sprayed onto the substrate through a set of nozzles.
  • the equipment has a simple structure and greatly saves costs. 1, when the alignment film is made by inkjet printing, when the alignment film solution is inkjet printed to the area 110 of the substrate 100 where the alignment film is to be formed, the alignment film at different positions in the area 110 where the alignment film is to be formed The single drop volume of the solution is the same (generally 85ng). Please refer to Figure 2.
  • the edge of the alignment film 200 will eventually form a thickness A uniform halo region 210
  • the halo region 220 includes a first part A and a second part B arranged in sequence along the edge away from the alignment film 200, wherein the upper surface of the first part A protrudes away from the substrate 100, the first part
  • the thickness of the region A with the largest thickness is greater than the thickness of the alignment film 200 located outside the halo region 220, and the thickness of the second portion B is smaller than the thickness of the alignment film 200 located outside the halo region 220.
  • the topography of the alignment film surface is uneven, and the distribution of the liquid crystal on the surface of the alignment film is chaotic.
  • the pretilt angle of the liquid crystal corresponding to the halo zone is different from other regions.
  • the different thickness of the alignment film will cause the alignment film
  • There is a difference in the penetration rate of the halo area and both factors will cause the brightness of the halo area to be inconsistent with other areas, resulting in uneven brightness (mura).
  • the purpose of the present invention is to provide a method for manufacturing an alignment film, which can reduce the size of the halo region of the alignment film, improve the uniformity of the thickness of the alignment film, and help eliminate uneven brightness around the periphery.
  • Another object of the present invention is to provide an alignment film whose halo area has a small size and a high thickness uniformity, which helps to eliminate the unevenness of peripheral brightness.
  • the present invention first provides a method for manufacturing an alignment film, which includes the following steps:
  • Step S1 providing a substrate
  • the substrate includes a first area, a second area located outside the first area, and a third area located outside the second area;
  • Step S2 Inkjet printing the alignment film solution onto the substrate, and the single drop volume of the alignment film solution inkjet printing to the first area is smaller than the single drop volume inkjet printing the alignment film solution to the second area, and inkjet printing to the first area
  • the amount of a single drop of the printing alignment film solution is greater than the amount of a single drop of the inkjet printing alignment film solution to the third area, thereby forming an alignment film on the substrate.
  • the alignment film includes a central area and a halo area located outside the central area.
  • the halo area includes a first part and a second part arranged in a direction away from the central area; the thickness of the first part is less than the thickness of the central area, so The upper surface of the first part is recessed in the direction close to the substrate; the upper surface of the second part protrudes in the direction away from the substrate; the second part is located on the third area of the substrate, and the first part is located on the second area of the substrate.
  • the vertical projection of the boundary between the halo area and the central area is located in the second area.
  • the alignment film solution is ink-jet printed to the first area, the second area, and the third area sequentially.
  • the single drop volume of the alignment film solution for inkjet printing to the first area is 45-85ng; the single drop volume of the alignment film solution for inkjet printing to the second area is 85-125ng; The amount of a single drop of the inkjet printing alignment film solution in the third area is 30-60ng.
  • the single drop volume of the alignment film solution for inkjet printing to the first area is 85ng; the single drop volume of the alignment film solution for inkjet printing to the second area is 124ng; The single drop volume of the inkjet printing alignment film solution is 60ng.
  • the distance between the first area and the third area away from the edge of the first area is 1-3 mm.
  • the distance between the second area and the third area away from the edge of the first area is 0.1-0.3 mm.
  • the substrate is a thin film transistor array substrate or a color filter substrate.
  • the alignment film solution is a polyimide solution.
  • the present invention also provides an alignment film, which is made by using the above-mentioned manufacturing method of the alignment film; the alignment film includes a central area and a halo area located outside the central area, and the halo area includes a central area away from the central area.
  • the second part is located on the third area of the substrate, the first part is located on the second area of the substrate, and the vertical projection of the boundary between the halo area and the central area is located in the second area.
  • the method for manufacturing the alignment film provided by the present invention provides a substrate with a first area, a second area, and a third area sequentially arranged from the inside to the outside.
  • the single drop volume of the alignment film solution for inkjet printing in one area is smaller than the single drop volume of the alignment film solution for inkjet printing to the second area, and the single drop volume of the alignment film solution for inkjet printing to the first area is greater than that for the third area.
  • the amount of a single drop of the alignment film solution can form an alignment film with a smaller halo area and a higher thickness uniformity on the substrate, which helps to eliminate uneven brightness around the periphery.
  • the halo region of the alignment film of the present invention has a small size and a high thickness uniformity, which helps to eliminate the unevenness of peripheral brightness.
  • 1 and 2 are schematic diagrams of forming an alignment film by inkjet printing in the prior art
  • step S1 is a schematic diagram of step S1 of the manufacturing method of the alignment film of the present invention.
  • step S2 is a schematic diagram of step S2 of the manufacturing method of the alignment film of the present invention.
  • the present invention provides a manufacturing method of an alignment film, which includes the following steps:
  • Step S1 please refer to FIG. 4 to provide a substrate 10.
  • the substrate 10 includes a first area 11, a second area 12 located outside the first area 11, and a third area 13 located outside the second area 12.
  • the substrate 10 may be a thin film transistor array substrate or a color filter substrate, that is, the present invention can be used to make an alignment film on the side of a thin film transistor array substrate or can be used to make an alignment film on the side of a color filter substrate.
  • Step S2 Inkjet printing the alignment film solution onto the substrate 10, and the single drop volume of the alignment film solution inkjet printing on the first area 11 is smaller than the single drop volume of the alignment film solution inkjet printing on the second area 12, The amount of a single drop of the inkjet printing alignment film solution in the area 11 is greater than the amount of a single drop of the inkjet printing alignment film solution to the third area 13, so referring to FIG. 5, the alignment film 20 is formed on the substrate 10.
  • the alignment film 20 includes a central area 21 and a halo area 22 located outside the central area 21.
  • the halo area 22 includes a first portion 221 and a second portion arranged in a direction away from the central area 21. 222.
  • the thickness of the first portion 221 is smaller than the thickness of the central region 21, the upper surface of the first portion 221 is recessed in a direction close to the substrate 10, and the upper surface of the second portion 222 protrudes in a direction away from the substrate 10, so
  • the second portion 222 is located on the third area 13, the first portion 221 is located on the second area 12, and the vertical projection of the boundary between the halo area 22 and the central area 21 is located in the second area 12.
  • the single drop volume of the alignment film solution for inkjet printing to the first area 11 is 45-85 ng
  • the single drop volume of the alignment film solution for inkjet printing to the second area 12 is 85 ng.
  • the single drop volume of the alignment film solution for inkjet printing to the third area 13 is 30-60ng.
  • the single drop of the alignment film solution for inkjet printing to the first area 11 is 85 ng
  • the single drop of the alignment film solution for inkjet printing to the second area 12 is 124 ng
  • the single drop of the inkjet printing alignment film solution in the third area 13 is 60 ng.
  • the alignment film solution is ink-jet printed to the first area 11, the second area 12, and the third area 13 in sequence.
  • the distance between the edges of the first area 11 and the third area 13 away from the first area 11 is 1-3 mm.
  • the distance between the second area 12 and the third area 13 away from the edge of the first area 11 is 0.1-0.3 mm.
  • the alignment film solution is a polyimide solution.
  • the single drop volume of the alignment film solution inkjet printing to the first area 11 is controlled to be smaller than that of the second area. 12 Inkjet printing the single drop volume of the alignment film solution, and control the single drop volume of the inkjet printing alignment film solution to the first area 11 to be larger than the single drop volume of the inkjet printing alignment film solution to the third area 13 11
  • the single drop volume of the inkjet printing alignment film solution can be consistent with the uniform single drop volume set during the inkjet printing of the alignment film solution in the prior art, and the single drop of the inkjet printing alignment film solution to the first area is controlled.
  • the amount is smaller than the amount of a single drop of the alignment film solution for inkjet printing to the second area 12, so that the amount of the alignment film solution in the second area 12 is greater than the amount of the alignment film solution in the first area 11, which can increase the halo in the prior art.
  • the thickness of the thinner part of the film in the region makes the size of the halo region 22 of the alignment film 20 finally formed smaller than that of the prior art, and makes the amount of single drop of the alignment film solution inkjet printed to the first region 11 larger than that of the alignment film.
  • the third area 13 inkjet prints the single drop of the alignment film solution, which can reduce the thickness of the second portion 222 in the halo area 22 so that the thickness of the area where the thickness of the second portion 222 is the largest is equal to the thickness of the alignment film 20 outside the halo area 22 Therefore, the thickness difference of the alignment film 20 is effectively reduced, and the uniformity of the thickness of the alignment film 20 is improved, thereby eliminating the uneven distribution of the pretilt angle caused by the uneven thickness of the alignment film 20. , And can eliminate the difference in transmittance caused by the uneven thickness of the alignment film 20, reduce the brightness difference through the above two points, thereby effectively improving the peripheral brightness unevenness of the liquid crystal display panel made by the alignment film, and improving the quality of the product .
  • the present invention also provides an alignment film manufactured by the above-mentioned manufacturing method of the alignment film.
  • the alignment film 20 includes a central area 21 and a halo area 22 located outside the central area 21.
  • the halo area 22 includes a first portion 221 and a second portion 222 arranged in order along a direction away from the central area 21.
  • the thickness of the first portion 221 is smaller than the thickness of the central area 21, and the upper surface of the first portion 221 is closer to the substrate 10.
  • the upper surface of the second portion 222 protrudes away from the substrate 10, the second portion 222 is located on the third area 13 of the substrate 10, and the first portion 221 is located on the second area 12 of the substrate.
  • the vertical projection of the boundary between the halo area 22 and the central area 21 is located in the second area 12.
  • the alignment film of the present invention is prepared by using the above-mentioned manufacturing method of the alignment film, by controlling the amount of a single drop of the alignment film solution for inkjet printing to the first area 11 when the alignment film solution is inkjet printed on the substrate 10 It is smaller than the single drop volume of the alignment film solution for inkjet printing to the second area 12, and the single drop volume of the alignment film solution for inkjet printing to the first area 11 is controlled to be greater than the single drop volume of the alignment film solution for inkjet printing to the third area 13 ,
  • the single drop volume of the inkjet printing alignment film solution to the first area 11 can be consistent with the uniform single drop volume set during the inkjet printing of the alignment film solution in the prior art, and the inkjet printing alignment to the first area 11 is controlled
  • the amount of a single drop of the membrane solution is smaller than the amount of a single drop of the alignment membrane solution for inkjet printing to the second area 12, so that the amount of the alignment film solution in the second area 12 is greater than the amount of the alignment film
  • the manufacturing method of the alignment film provides a substrate with a first area, a second area, and a third area sequentially arranged from the inside to the outside.
  • the first area The single drop volume of the alignment film solution for area inkjet printing is smaller than the single drop volume of the alignment film solution for inkjet printing to the second area, and the single drop volume of the alignment film solution for inkjet printing to the first area is greater than that for the third area.
  • the amount of a single drop of the film solution can form an alignment film with a smaller halo zone size and a higher thickness uniformity on the substrate, which helps to eliminate the unevenness of the peripheral brightness.
  • the halo region of the alignment film of the present invention has a small size and a high thickness uniformity, which helps to eliminate the unevenness of peripheral brightness.

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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

本发明提供一种配向膜的制作方法及配向膜。本发明的配向膜的制作方法提供具有由内至外依次设置的第一区域、第二区域及第三区域的基板，向基板喷墨打印配向膜溶液时，向第一区域喷墨打印配向膜溶液的单滴量小于向第二区域喷墨打印配向膜溶液的单滴量，向第一区域喷墨打印配向膜溶液的单滴量大于向第三区域喷墨打印配向膜溶液的单滴量，从而在基板上形成halo区尺寸较小、厚度均匀性较高的配向膜，有助于消除周边亮度不均。

Description

配向膜的制作方法及配向膜 技术领域
本发明涉及显示技术领域，尤其涉及一种配向膜的制作方法及配向膜。
 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。但众所周知，液晶显示器为被动发光器件，液晶材料本身不发光，因而现有市场上的液晶显示器大部分为背光型液晶显示器，其包括液晶显示面板及背光模组（backlight module）。
液晶显示面板的工作原理是在两片平行的玻璃基板当中放置液晶分子，通过在两片玻璃基板上施加驱动电压来控制液晶分子改变方向，将背光模组的光线折射出来产生画面。通常液晶显示面板由彩色滤光膜（Color Filter，CF）基板、薄膜晶体管（Thin Film Transistor，TFT）阵列基板、夹于彩色滤光膜基板与薄膜晶体管阵列基板之间的液晶（Liquid Crystal，LC）及密封胶框（Sealant）组成。
目前，在液晶显示面板的中段成盒制程中，通常会先在薄膜晶体管（TFT）阵列基板和彩色滤光膜（CF）基板上制作一层配向膜（PI，即聚酰亚胺），然后在薄膜晶体管阵列基板上涂布密封框胶并滴入液晶，再在真空状态下将薄膜晶体管阵列基板和彩色滤光膜基板贴合，最后经过紫外线照射将密封框胶固化，完成薄膜晶体管阵列基板和彩色滤光膜基板的封装。
现有的制作配向膜的方式主要有两种，一种是使用印刷版转印配向膜，另一种是通过喷墨打印（Inkjet Printing）的涂布方式制作配向膜，喷墨打印制作配向膜不需要印刷版，直接将图形输入电脑中，通过一组喷头将配向膜溶液喷洒到基板上，设备构造简单，大大节约成本。请参阅图1，在采用喷墨打印的方式制作配向膜时，在向基板100的待形成配向膜的区域110喷墨打印配向膜溶液时，待形成配向膜的区域110中不同位置的配向膜溶液的单滴量是一致的（一般为85ng），请参阅图2，在基板100上喷墨打印成配向膜溶液后，在表面张力的作用下，最终配向膜200的边缘会形成一个厚度不均匀的光晕（halo）区210，该halo区220包括沿远离配向膜200边缘依次设置的第一部分A及第二部分B，其中第一部分A的上表面向远离基板100的方向突出，第一部分A厚度最大的区域的厚度大于位于halo区220外的配向膜200的厚度，第二部分B的厚度小于位于halo区220外的配向膜200的厚度。由于halo区的存在，导致配向膜表面地形不均一，从而使液晶在配向膜的表面的分布混乱，halo区对应的液晶的预倾角与其他区域有差异，同时配向膜膜厚不同会使得配向膜的穿透率有差异，两个因素都会导致halo区与其他区域显示时的亮度不一致，产生周边亮度不均（mura）。
 技术问题
本发明的目的在于提供一种配向膜的制作方法，能够减小配向膜的halo区的尺寸，提升配向膜厚度的均匀性，有助于消除周边亮度不均。
本发明的另一目的在于提供一种配向膜，其halo区的尺寸较小，厚度均匀性较高，有助于消除周边亮度不均。
 技术解决方案
为实现上述目的，本发明首先提供一种配向膜的制作方法，包括如下步骤：
步骤S1、提供基板；
所述基板包括第一区域、位于所述第一区域外侧的第二区域及位于所述第二区域外侧的第三区域；
步骤S2、向所述基板喷墨打印配向膜溶液，向第一区域喷墨打印配向膜溶液的单滴量小于向第二区域喷墨打印配向膜溶液的单滴量，向第一区域喷墨打印配向膜溶液的单滴量大于向第三区域喷墨打印配向膜溶液的单滴量，从而在基板上形成配向膜。
所述配向膜包括中心区及位于中心区外侧的halo区，所述halo区包括沿远离中心区的方向依次设置的第一部分及第二部分；所述第一部分的厚度小于中心区的厚度，所述第一部分的上表面向靠近基板的方向凹陷；所述第二部分的上表面向远离基板的方向突出；所述第二部分位于基板的第三区域上，所述第一部分位于基板的第二区域上，所述halo区与中心区的交界在竖直方向的投影位于第二区域内。
所述步骤S2中依次向所述第一区域、第二区域及第三区域喷墨打印配向膜溶液。
所述步骤S2中，向所述第一区域喷墨打印配向膜溶液的单滴量为45-85ng；向所述第二区域喷墨打印配向膜溶液的单滴量为85-125ng；向所述第三区域喷墨打印配向膜溶液的单滴量为30-60ng。
所述步骤S2中，向所述第一区域喷墨打印配向膜溶液的单滴量为85ng；向所述第二区域喷墨打印配向膜溶液的单滴量为124ng；向所述第三区域喷墨打印配向膜溶液的单滴量为60ng。
所述第一区域与第三区域远离第一区域的边缘间的距离为1-3mm。
所述第二区域与第三区域远离第一区域的边缘之间的距离为0.1-0.3mm。
所述基板为薄膜晶体管阵列基板或彩膜基板。
所述配向膜溶液为聚酰亚胺溶液。
本发明还提供一种配向膜，采用上述的配向膜的制作方法制得；所述配向膜包括中心区及位于中心区外侧的halo区，所述halo区包括沿远离中心区的方向依次设置的第一部分及第二部分；所述第一部分的厚度小于中心区的厚度，所述第一部分的上表面向靠近基板的方向凹陷；所述第二部分的上表面向远离基板的方向突出；所述第二部分位于基板的第三区域上，所述第一部分位于基板的第二区域上，所述halo区与中心区的交界在竖直方向的投影位于第二区域内。
 有益效果
本发明的有益效果：本发明提供的配向膜的制作方法提供具有由内至外依次设置的第一区域、第二区域及第三区域的基板，向基板喷墨打印配向膜溶液时，向第一区域喷墨打印配向膜溶液的单滴量小于向第二区域喷墨打印配向膜溶液的单滴量，向第一区域喷墨打印配向膜溶液的单滴量大于向第三区域喷墨打印配向膜溶液的单滴量，从而在基板上形成halo区尺寸较小、厚度均匀性较高的配向膜，有助于消除周边亮度不均。本发明的配向膜的halo区的尺寸较小，厚度均匀性较高，有助于消除周边亮度不均。
 附图说明
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。
附图中，
图1及图2为现有技术采用喷墨打印的方式形成配向膜的示意图；
图3为本发明的配向膜的制作方法的流程图；
图4为本发明的配向膜的制作方法的步骤S1的示意图；
图5为本发明的配向膜的制作方法的步骤S2的示意图。
 本发明的实施方式
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3，本发明提供一种配向膜的制作方法，包括如下步骤：
步骤S1、请参阅图4，提供基板10。
所述基板10包括第一区域11、位于所述第一区域11外侧的第二区域12及位于所述第二区域12外侧的第三区域13。
具体地，所述基板10可以为薄膜晶体管阵列基板或者彩膜基板，也即本发明可以用于在薄膜晶体管阵列基板侧制作配向膜也可以用于在彩膜基板侧制作配向膜。
步骤S2、向所述基板10喷墨打印配向膜溶液，向第一区域11喷墨打印配向膜溶液的单滴量小于向第二区域12喷墨打印配向膜溶液的单滴量，向第一区域11喷墨打印配向膜溶液的单滴量大于向第三区域13喷墨打印配向膜溶液的单滴量，从而请参阅图5，在基板10上形成配向膜20。
具体地，参阅图5，所述配向膜20包括中心区21及位于中心区21外侧的halo区22，所述halo区22包括沿远离中心区21的方向依次设置的第一部分221及第二部分222，所述第一部分221的厚度小于中心区21的厚度，所述第一部分221的上表面向靠近基板10的方向凹陷，所述第二部分222的上表面向远离基板10的方向突出，所述第二部分222位于第三区域13上，所述第一部分221位于第二区域12上，所述halo区22与中心区21的交界在竖直方向的投影位于第二区域12内。
具体地，所述步骤S2中，向所述第一区域11喷墨打印配向膜溶液的单滴量为45-85ng，向所述第二区域12喷墨打印配向膜溶液的单滴量为85-125ng，向所述第三区域13喷墨打印配向膜溶液的单滴量为30-60ng。
优选地，所述步骤S2中，向所述第一区域11喷墨打印配向膜溶液的单滴量为85ng，向所述第二区域12喷墨打印配向膜溶液的单滴量为124ng，向所述第三区域13喷墨打印配向膜溶液的单滴量为60ng。
具体地，所述步骤S2中依次向所述第一区域11、第二区域12及第三区域13喷墨打印配向膜溶液。
优选地，所述第一区域11与第三区域13远离第一区域11的边缘间的距离为1-3mm。所述第二区域12与第三区域13远离第一区域11的边缘之间的距离为0.1-0.3mm。
具体地，所述配向膜溶液为聚酰亚胺溶液。
需要说明的是，本发明提供的配向膜的制作方法中，通过在向基板10喷墨打印配向膜溶液时，控制向第一区域11喷墨打印配向膜溶液的单滴量小于向第二区域12喷墨打印配向膜溶液的单滴量，并控制向第一区域11喷墨打印配向膜溶液的单滴量大于向第三区域13喷墨打印配向膜溶液的单滴量，向第一区域11喷墨打印配向膜溶液的单滴量可与现有技术中喷墨打印配向膜溶液时设定的均一的单滴量一致，而控制向第一区域11喷墨打印配向膜溶液的单滴量小于向第二区域12喷墨打印配向膜溶液的单滴量可使得第二区域12内的配向膜溶液的量大于第一区域11内的配向膜溶液的量，能够增加现有技术中halo区中膜厚较薄的部分的厚度，使最终形成的配向膜20的halo区22的尺寸较现有技术更小，而使得向第一区域11喷墨打印配向膜溶液的单滴量大于向第三区域13喷墨打印配向膜溶液的单滴量，能够降低halo区22中第二部分222的厚度使第二部分222厚度最大的区域的厚度与halo区22外的配向膜20的厚度趋于一致，从而有效的减少了配向膜20的膜厚差异，提高了配向膜20厚度的均匀性，从而能够消除由于配向膜20厚度不均匀导致的液晶分布不均匀带来的预倾角分布不均一，并且能够消除由于配向膜20厚度不均匀导致的穿透率的差异，通过以上两点减少亮度差异，从而有效改善了利用该配向膜制作的液晶显示面板的周边亮度不均，提升产品的品质。
请参阅图5，基于同一发明构思，本发明还提供一种配向膜，采用上述的配向膜的制作方法制得，该配向膜20包括中心区21及位于中心区21外侧的halo区22，所述halo区22包括沿远离中心区21的方向依次设置的第一部分221及第二部分222，所述第一部分221的厚度小于中心区21的厚度，所述第一部分221的上表面向靠近基板10的方向凹陷，所述第二部分222的上表面向远离基板10的方向突出，所述第二部分222位于基板10的第三区域13上，所述第一部分221位于基板的第二区域12上，所述halo区22与中心区21的交界在竖直方向的投影位于第二区域12内。
需要说明的是，本发明的配向膜采用上述的配向膜的制作方法制得，通过在向基板10喷墨打印配向膜溶液时，控制向第一区域11喷墨打印配向膜溶液的单滴量小于向第二区域12喷墨打印配向膜溶液的单滴量，并控制向第一区域11喷墨打印配向膜溶液的单滴量大于向第三区域13喷墨打印配向膜溶液的单滴量，向第一区域11喷墨打印配向膜溶液的单滴量可与现有技术中喷墨打印配向膜溶液时设定的均一的单滴量一致，而控制向第一区域11喷墨打印配向膜溶液的单滴量小于向第二区域12喷墨打印配向膜溶液的单滴量可使得第二区域12内的配向膜溶液的量大于第一区域11内的配向膜溶液的量，能够增加现有技术中halo区中膜厚较薄的部分的厚度，使最终形成的配向膜20的halo区22的尺寸较现有技术更小，而使得向第一区域11喷墨打印配向膜溶液的单滴量大于向第三区域13喷墨打印配向膜溶液的单滴量，能够降低halo区22中第二部分222的厚度使第二部分222厚度最大的区域的厚度与halo区22外的配向膜20的厚度趋于一致，从而有效的减少了配向膜20的膜厚差异，提高了配向膜20厚度的均匀性，从而能够消除由于配向膜20厚度不均匀导致的液晶分布不均匀带来的预倾角分布不均一，并且能够消除由于配向膜20厚度不均匀导致的穿透率的差异，通过以上两点减少亮度差异，从而有效改善了利用该配向膜制作的液晶显示面板的周边亮度不均，提升产品的品质。
综上所述，本发明提供的配向膜的制作方法提供具有由内至外依次设置的第一区域、第二区域及第三区域的基板，向基板喷墨打印配向膜溶液时，向第一区域喷墨打印配向膜溶液的单滴量小于向第二区域喷墨打印配向膜溶液的单滴量，向第一区域喷墨打印配向膜溶液的单滴量大于向第三区域喷墨打印配向膜溶液的单滴量，从而在基板上形成halo区尺寸较小、厚度均匀性较高的配向膜，有助于消除周边亮度不均。本发明的配向膜的halo区的尺寸较小，厚度均匀性较高，有助于消除周边亮度不均。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种配向膜的制作方法，包括如下步骤：
    步骤S1、提供基板；
    所述基板包括第一区域、位于所述第一区域外侧的第二区域及位于所述第二区域外侧的第三区域；
    步骤S2、向所述基板喷墨打印配向膜溶液，向第一区域喷墨打印配向膜溶液的单滴量小于向第二区域喷墨打印配向膜溶液的单滴量，向第一区域喷墨打印配向膜溶液的单滴量大于向第三区域喷墨打印配向膜溶液的单滴量，从而在基板上形成配向膜。
  2. 如权利要求1所述的配向膜的制作方法，其中，所述配向膜包括中心区及位于中心区外侧的halo区，所述halo区包括沿远离中心区的方向依次设置的第一部分及第二部分；所述第一部分的厚度小于中心区的厚度，所述第一部分的上表面向靠近基板的方向凹陷；所述第二部分的上表面向远离基板的方向突出；所述第二部分位于基板的第三区域上，所述第一部分位于基板的第二区域上，所述halo区与中心区的交界在竖直方向的投影位于第二区域内。
  3. 如权利要求1所述的配向膜的制作方法，其中，所述步骤S2中依次向所述第一区域、第二区域及第三区域喷墨打印配向膜溶液。
  4. 如权利要求1所述的配向膜的制作方法，其中，所述步骤S2中，向所述第一区域喷墨打印配向膜溶液的单滴量为45-85ng；向所述第二区域喷墨打印配向膜溶液的单滴量为85-125ng；向所述第三区域喷墨打印配向膜溶液的单滴量为30-60ng。
  5. 如权利要求4所述的配向膜的制作方法，其中，所述步骤S2中，向所述第一区域喷墨打印配向膜溶液的单滴量为85ng；向所述第二区域喷墨打印配向膜溶液的单滴量为124ng；向所述第三区域喷墨打印配向膜溶液的单滴量为60ng。
  6. 如权利要求1所述的配向膜的制作方法，其中，所述第一区域与第三区域远离第一区域的边缘间的距离为1-3mm。
  7. 如权利要求6所述的配向膜的制作方法，其中，所述第二区域与第三区域远离第一区域的边缘之间的距离为0.1-0.3mm。
  8. 如权利要求1所述的配向膜的制作方法，其中，所述基板为薄膜晶体管阵列基板或彩膜基板。
  9. 如权利要求1所述的配向膜的制作方法，其中，所述配向膜溶液为聚酰亚胺溶液。
  10. 一种配向膜，采用如权利要求1所述的配向膜的制作方法制得；所述配向膜包括中心区及位于中心区外侧的halo区，所述halo区包括沿远离中心区的方向依次设置的第一部分及第二部分；所述第一部分的厚度小于中心区的厚度，所述第一部分的上表面向靠近基板的方向凹陷；所述第二部分的上表面向远离基板的方向突出；所述第二部分位于基板的第三区域上，所述第一部分位于基板的第二区域上，所述halo区与中心区的交界在竖直方向的投影位于第二区域内。
     
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