WO2013016880A1 - 用于配向膜的聚酰亚胺表面的液晶活性单体及液晶面板 - Google Patents

用于配向膜的聚酰亚胺表面的液晶活性单体及液晶面板 Download PDF

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WO2013016880A1
WO2013016880A1 PCT/CN2011/078398 CN2011078398W WO2013016880A1 WO 2013016880 A1 WO2013016880 A1 WO 2013016880A1 CN 2011078398 W CN2011078398 W CN 2011078398W WO 2013016880 A1 WO2013016880 A1 WO 2013016880A1
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liquid crystal
reactive monomer
alignment film
crystal composition
polyimide surface
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French (fr)
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谢忠憬
贺成明
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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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    • 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
    • G02F1/133365—Cells in which the active layer comprises a liquid crystalline polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
    • C09K2019/0448—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the end chain group being a polymerizable end group, e.g. -Sp-P or acrylate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06—Non-steroidal liquid crystal compounds
    • C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/12—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings at least two benzene rings directly linked, e.g. biphenyls
    • C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
    • C09K2019/122—Ph-Ph
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2323/00—Functional layers of liquid crystal optical display excluding electroactive liquid crystal layer characterised by chemical composition
    • C09K2323/02—Alignment layer characterised by chemical composition
    • C09K2323/027—Polyimide

Definitions

  • the present invention relates to a liquid crystal active monomer and a liquid crystal panel, and more particularly to a liquid crystal active monomer for a polyimide surface of an alignment film and a liquid crystal panel having the liquid crystal active monomer.
  • the liquid crystal injection method is to slowly inject the liquid crystal into the combined glass substrates by the capillary principle.
  • the disadvantage of this method is that it is very time consuming and wastes the liquid crystal material.
  • the aforementioned liquid crystal injection method has gradually been introduced by a drop-drop type (One Drop Filling, ODF) technology replaced.
  • the drop-injection technique firstly drops the liquid crystal directly onto a glass substrate through a liquid crystal dropping device, and then pairs it with another glass. This new technology can significantly save time and liquid crystal material injected into the liquid crystal.
  • the alignment film is used to drop the liquid crystal onto the alignment film on the substrate by the dropping type implantation technique.
  • the influence of the impact of the liquid crystal droplets on the alignment film tends to cause the drop mura defect of the finished product to occur.
  • liquid crystal reactive monomer reactive The monomer, RM
  • PI polyimide
  • LCD Liquid crystal display
  • the interaction between the current liquid crystal reactive monomer and the polyimide surface of the current alignment film is too large, causing the panel to encounter severe dripping pattern display unevenness (drop Mura).
  • FIG. 1A discloses a schematic diagram of a liquid crystal composition deposited on an alignment film of a transparent substrate in the conventional ODF technology.
  • FIG. 1B and FIG. 1C there is shown a schematic diagram of liquid crystal active monomer 1 deposited on the polyimide surface 2 of the alignment film in the liquid crystal composition, wherein the dropping pattern shows that the unevenness is due to different amounts of liquid crystal active monomers. 1 uneven deposition of the polyimide surface 2 of the alignment film on the transparent substrate.
  • the liquid crystal reactive monomer 1 used in the conventional ODF technique has a molecular formula of the following formula (I) and a molecular weight of 300 or less.
  • the reason for causing the above-described pattern display unevenness is that the interaction between the liquid crystal reactive monomer 1 and the polyimide surface 2 of the alignment film is too large, so that it is disadvantageous for the liquid crystal containing active sheet.
  • the liquid crystal composition of the body 1 is uniformly diffused and distributed on the polyimide surface 2 of the alignment film.
  • a first object of the present invention is to provide a liquid crystal reactive monomer (reactive Monomer, RM), which has an appropriate interaction force with the polyimide (PI) surface of the alignment film to avoid the occurrence of unevenness in the dripping pattern.
  • RM reactive Monomer
  • a second object of the present invention is to provide a liquid crystal panel having a transparent substrate and an alignment film, and a liquid crystal composition is diffused and distributed on the polyimide surface of the alignment film, and the liquid crystal composition includes at least one A liquid crystal active monomer for causing liquid crystal molecules of a liquid crystal composition of a liquid crystal cell to have a pretilt angle with respect to a polyimide surface of the alignment film to assist alignment of liquid crystal molecules.
  • the liquid crystal reactive monomer has a molecular weight of between 322 and 500, and the ultraviolet light wavelength required for polymerization curing of the polyimide surface is greater than or equal to 300 nm.
  • the present invention provides a liquid crystal reactive monomer for a polyimide surface of an alignment film, the liquid crystal reactive monomer being contained in a liquid crystal composition for causing liquid crystal in the liquid crystal composition
  • the molecule has a pretilt angle with respect to the polyimide surface of the alignment film, characterized in that the liquid crystal reactive monomer has a molecular weight of between 322 and 500, and the liquid crystal reactive monomer and the polyimide surface are polymerized and cured.
  • the required ultraviolet light wavelength is greater than or equal to 300 nanometers; wherein the liquid crystal composition is a liquid crystal composition of a drop-injection technique, and the polyimide surface of the alignment film is formed on a transparent substrate.
  • the transparent substrate is a glass substrate.
  • the transparent substrate is a flexible polymer substrate or a non-flexible polymer substrate.
  • the present invention further provides a liquid crystal reactive monomer which is contained in a liquid crystal composition for making a liquid crystal molecule in the liquid crystal composition with respect to a polyimide of an alignment film.
  • the surface has a pretilt angle
  • the liquid crystal reactive monomer has a molecular weight of between 322 and 500
  • the ultraviolet spectrum has a characteristic absorption peak at a wavelength greater than or equal to 300 nm.
  • the liquid crystal composition is a liquid crystal composition of a drop-injection (ODF) technique.
  • ODF drop-injection
  • the liquid crystal composition in the liquid crystal panel, is a liquid crystal composition of a drop-injection (ODF) technique.
  • ODF drop-injection
  • the transparent substrate is a glass substrate.
  • the transparent substrate is a flexible polymer substrate or a non-flexible polymer substrate.
  • the liquid crystal reactive monomer reduces the interaction force with the polyimide (PI) surface of the alignment film on the transparent substrate, and improves the unevenness of the drop pattern display when performing the drop-injection (ODF) technique (Drop) The phenomenon of mura).
  • ODF drop-injection
  • Drop Drop-injection
  • the curing speed of the liquid crystal reactive monomer and the polyimide surface polymerization curing reaction is relatively increased, the purpose of energy saving and carbon reduction can also be achieved.
  • 1A is a schematic view showing a liquid crystal composition deposited on an alignment film of a transparent substrate in a conventional ODF technique.
  • FIGS. 1B and 1C are schematic views showing deposition of a liquid crystal reactive monomer on an alignment film in a liquid crystal composition.
  • 2A-D are schematic views showing the liquid crystal composition of the present invention dropped onto an alignment film of a transparent substrate in an ODF technique according to a preferred embodiment of the present invention.
  • the present invention provides a liquid crystal reactive monomer which is contained in a liquid crystal composition for causing a liquid crystal molecule in the liquid crystal composition to have a pretilt angle.
  • the liquid crystal reactive monomer has a molecular weight of between 322 and 500, and the ultraviolet light wavelength required for polymerization curing of the polyimide surface is greater than or equal to 300 nm.
  • the liquid crystal composition preferably means a liquid crystal composition of a dropping type injection (ODF) technique for imparting a pretilt angle to liquid crystal molecules in the liquid crystal composition.
  • ODF dropping type injection
  • FIGS. 2A-2D are schematic diagrams showing the liquid crystal composition of the present invention dropped on the alignment film of the transparent substrate in the ODF technology according to the preferred embodiment of the present invention, wherein the relative of the two transparent substrates
  • the surface is pre-coated with polyimide to form a polyimide (PI) surface 2 as an alignment film
  • the drop-injection technique (ODF) is to add a liquid crystal active monomer 1 between two transparent substrates.
  • the liquid crystal composition is applied with a voltage on the opposite transparent electrodes of the two transparent substrates, and then ultraviolet-cured so that the liquid crystal molecules 3 in the liquid crystal composition have a pretilt angle with respect to the polyimide surface 2 of the alignment film.
  • the molecular structure of the above liquid crystalline reactive monomer 1 can be obtained from the liquid crystalline reactive monomer described in the above formula (I) or a derivative thereof and the like.
  • Table 1 is a different liquid crystal active monomer of the present invention (monomer; RM1 ⁇ 4) Under the condition of polyimide (PI) of the same alignment film, the drop-off pattern shows the result of unevenness.
  • the liquid crystal reactive monomer (liquid crystal reactive monomer 1-4) of the present invention overcomes the defects of the existing liquid crystal reactive monomer, and can improve the occurrence of unevenness of the dripping pattern display, and
  • the curing speed is remarkably improved, and the purpose of energy saving and carbon reduction is achieved.
  • a voltage is applied to the opposite transparent electrodes of the two transparent substrates, and then ultraviolet rays are applied to cause the liquid crystal reactive monomer (RM) 1 to undergo a polymerization curing reaction on the polyimide (PI) surface 2 to
  • the liquid crystal molecules 3 in the liquid crystal composition are made to have a pretilt angle with respect to the polyimide surface 2 of the alignment film.
  • the liquid crystal reactive monomer (RM1 ⁇ 4) reduces the interaction force with the polyimide (PI) of the alignment film, and improves the unevenness of the drop pattern when performing the drop-injection (ODF) technique (Drop) The phenomenon of mura).
  • ODF drop-injection

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  • Crystallography & Structural Chemistry (AREA)
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  • Mathematical Physics (AREA)
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Abstract

提供一种用于配向膜的聚酰亚胺表面的液晶活性单体及液晶面板。所述液晶活性单体的分子量介于322至500之间，与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于300纳米。该液晶活性单体降低了液晶组成物与配向膜的聚亚胺之间的相互作用力，改善了进行滴下式注入技术时液晶组成物发生滴下图形显示不均匀的现象。

Description

用于配向膜的聚酰亚胺表面的液晶活性单体及液晶面板 技术领域
本发明涉及一种液晶活性单体及液晶面板，特别是涉及一种用于配向膜的聚酰亚胺表面的液晶活性单体及具有此液晶活性单体的液晶面板。
背景技术
传统的液晶面板制造过程的液晶注入方式，是以毛细原理将液晶慢慢注入已组合的两玻璃基板之间，这种方法缺点是非常耗时且浪费液晶材料。
前述的液晶注入方式已逐渐由一种滴下式注入（One Drop Filling, ODF）技术所取代。所述滴下式注入技术是先将液晶通过液晶滴下装置直接滴在一玻璃基板上，然后才将其与另一玻璃进行对组。这种新的技术可以大幅节省注入液晶的时间与液晶材料。
然而，制作某些针对液晶配向以改善视角的液晶面板时，通过所述滴下式注入技术使液晶滴下到基板上的配向膜（alignment film）时，配向膜受到液晶滴的冲击的影响往往会导致成品的滴下图形显示不均现象（drop mura defect）的发生。
添加液晶活性单体（reactive monomer，RM）可以使得滴在液晶晶穴（cell）中的液晶组成物的液晶分子相对于配向膜的聚酰亚胺（polyimide，PI）表面具有预倾角，以帮助液晶分子的配向，进而作为液晶显示器（LCD Display Device）的应用。但是，现行的液晶活性单体与现行配向膜的聚酰亚胺表面之间的相互作用力过大，导致面板遇到严重的滴下图形显示不均现象（drop mura）。
更详细来说，请参照图1A所示，其揭示现有ODF技术中在透明基板的配向膜上滴上液晶组成物的示意图。请参照图1B和图1C，其揭示液晶组成物中液晶活性单体1沉积在配向膜的聚酰亚胺表面2上的示意图，其中滴下图形显示不均匀现象是由于不同分量的液晶活性单体1不均匀的沉积在透明基板上的配向膜的聚酰亚胺表面2造成的。
现有ODF技术中所使用的液晶活性单体1，其分子式如下述分子式(I)，及其分子量在300以下。
Figure PCTCN2011078398-appb-I000001
……………………………………………(I)
当改变液晶的晶穴间隙（cell gap）并使其小于3.8微米(μm)时，会造成现有液晶活性单体1难以在配向膜的聚酰亚胺表面2大面积的扩散分布开来，从而导致不同分量的液晶活性单体1不均匀的沉积在配向膜的聚酰亚胺表面2（如图1B及1C所示）。因此，当液晶的晶穴间隙小于3.8 μm时，液晶面板会产生滴下图形显示不均匀现象。
更详细来说，造成上述图形显示不均匀现象的原因在于液晶活性单体1与配向膜的聚酰亚胺表面2之间的相互作用力（interaction）过大，因此不利于使包含液晶活性单体1的液晶组成物均匀的扩散分布于配向膜的聚酰亚胺表面2。
故，有必要提供一种新型的液晶活性单体，以解决现有技术所存在的问题。
 技术问题
本发明的第一个目的是提供一种液晶活性单体（reactive monomer，RM），其与配向膜的聚酰亚胺（PI）表面之间具有适当的相互作用力，以达到避免滴下图形显示不均匀现象的发生。
本发明的第二个目的是提供一种液晶面板，具有一透明基板及一配向膜，所述配向膜的聚酰亚胺表面上扩散分布有一种液晶组成物，所述液晶组成物包含至少一种液晶活性单体，所述液晶活性单体用以使液晶晶穴（cell）的液晶组成物的液晶分子相对于所述配向膜的聚酰亚胺表面具有预倾角，帮助液晶分子的配向。所述液晶活性单体的分子量介于322至500之间，其与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于300纳米。
 技术解决方案
为实现上述目的，本发明提供一种用于配向膜的聚酰亚胺表面的液晶活性单体，所述液晶活性单体包含于液晶组成物中，用以使所述液晶组成物中的液晶分子相对于配向膜的聚酰亚胺表面具有预倾角，其特征在于：所述液晶活性单体的分子量介于322至500之间，所述液晶活性单体与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于300纳米；其中，所述液晶组成物为滴下式注入技术的液晶组成物，所述配向膜的聚酰亚胺表面是形成在一透明基板上。
在本发明的一实施例中，所述透明基板为一玻璃基板。
在本发明的一实施例中，所述透明基板为一可挠式聚合物基板或一非可挠式聚合物基板。
为实现上述目的，本发明另提供一种液晶活性单体，所述液晶活性单体包含于液晶组成物中，用以使所述液晶组成物中的液晶分子相对于配向膜的聚酰亚胺表面具有预倾角，所述液晶活性单体的分子量介于322至500之间，其紫外光谱在波长大于或等于300纳米有特征吸收峰。
在本发明的一实施例中，所述液晶组成物为滴下式注入(ODF)技术的液晶组成物。
在本发明的一实施例中，在所述液晶面板的中，所述液晶组成物为滴下式注入(ODF)技术的液晶组成物。
在本发明的一实施例中，在所述液晶面板的中，所述透明基板为一玻璃基板。
在本发明的一实施例中，在所述液晶面板的中，所述透明基板为一可挠式聚合物基板或一非可挠式聚合物基板。
 有益效果
所述液晶活性单体降低了与透明基板上配向膜的聚酰亚胺（PI）表面之间的相互作用力，改善进行滴下式注入(ODF)技术时发生滴下图形显示不均匀（Drop mura）的现象。同时，由于也相对提高了所述液晶活性单体与聚酰亚胺表面聚合固化反应的固化速度，故亦可达到节能减碳的目的。
 附图说明
图1A是一现有ODF技术中在透明基板的配向膜上滴上液晶组成物的示意图。
图1B和图1C，其揭示液晶组成物中液晶活性单体沉积在配向膜之上的示意图。
图2A—D是根据本发明较佳实施例的ODF技术中在透明基板的配向膜上滴上本发明液晶组成物的示意图。
其中：
1—液晶活性单体（RM）；
2—聚酰亚胺表面（PI）；
3—液晶分子。
 本发明的最佳实施方式
以下结合实施例对本发明做详细的说明，实施例旨在解释而非限定本发明的技术方案。
根据本发明的一较佳实施例，本发明提供一种液晶活性单体，所述液晶活性单体包含于液晶组成物中，用以使所述液晶组成物中的液晶分子有预倾角，所述液晶活性单体的分子量介于322至500之间，其与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于300纳米。
在本发明中，所述液晶组成物优选是指滴下式注入(ODF)技术的液晶组成物，用以使所述液晶组成物中的液晶分子有预倾角。
更详细来说，请参照图2A—2D所示，其揭示根据本发明较佳实施例的ODF技术中在透明基板的配向膜上滴上本发明液晶组成物的示意图，其中两透明基板的相对表面上预先涂布聚酰亚胺以形成聚酰亚胺（PI）表面2做为配向膜，及所述滴下式注入技术（ODF）是在两透明基板之间加入包含液晶活性单体1的液晶组成物，并在两透明基板的相对透明电极上施加电压，然后紫外线固化，以使所述液晶组成物中的液晶分子3相对于所述配向膜的聚酰亚胺表面2具有预倾角。上述液晶活性单体1的分子结构可取材自上述分子式(I)所述的液晶活性单体或其衍生物及相似物。
请参照表1所示，表1是本发明的不同液晶活性单体（monomer; RM1~4）在相同配向膜的聚酰亚胺（PI）的条件下，滴下图形显示不均匀现象的考察结果。从表1中可以很明显的看出，本发明的液晶活性单体（液晶活性单体1—4）克服了现有液晶活性单体的缺陷，可以改善滴下图形显示不均匀现象的发生，并且，就液晶活性单体（RM）2和4与聚酰亚胺（PI）表面2聚合固化反应而言，其固化速度明显提高，实现了节能减碳的目的。
表1
Figure PCTCN2011078398-appb-I000002
更详细来说，在本发明中，在两透明基板的相对透明电极上施加电压，然后施加紫外线使液晶活性单体（RM）1在聚酰亚胺（PI）表面2进行聚合固化反应，以使所述液晶组成物中的液晶分子3相对于所述配向膜的聚酰亚胺表面2具有预倾角。所述液晶活性单体(RM1~4)降低了与配向膜的聚酰亚胺（PI）之间的相互作用力，改善进行滴下式注入(ODF)技术时发生滴下图形显示不均匀（Drop mura）的现象。同时，由于相对提高聚合固化反应的固化速度，故亦达到了节能减碳的目的。
本发明已由上述相关实施例加以描述，然而上述实施例仅为实施本发明的范例。必需指出的是，已公开的实施例并未限制本发明的范围。相反地，包含于权利要求书的精神及范围的修改及均等设置均包括于本发明的范围内。
 本发明的实施方式
工业实用性
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Claims (13)

  1. 一种用于配向膜的聚酰亚胺表面的液晶活性单体，所述液晶活性单体包含于液晶组成物中，用以使所述液晶组成物中的液晶分子相对于配向膜的聚酰亚胺表面具有预倾角，其特征在于：所述液晶活性单体的分子量介于 322 至 500 之间，所述液晶活性单体与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于 300 纳米；其中，所述液晶组成物为滴下式注入技术的液晶组成物，所述配向膜的聚酰亚胺表面是形成在一透明基板上。
  2. 根据权利要求 1 所述的液晶活性单体，其特征在于：所述透明基板为一玻璃基板。
  3. 根据权利要求 1 所述的液晶活性单体，其特征在于：所述透明基板为一可挠式聚合物基板或一非可挠式聚合物基板。
  4. 一种用于配向膜的聚酰亚胺表面的液晶活性单体，所述液晶活性单体包含于液晶组成物中，用以使所述液晶组成物中的液晶分子相对于配向膜的聚酰亚胺表面具有预倾角，其特征在于：所述液晶活性单体的分子量介于 322 至 500 之间，所述液晶活性单体与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于 300 纳米。
  5. 根据权利要求 1 所述的液晶活性单体，其特征在于：所述液晶组成物为滴下式注入技术的液晶组成物。
  6. 如权利要求 1 所述的液晶活性单体，其特征在于：所述配向膜的聚酰亚胺表面是形成在一透明基板上。
  7. 如权利要求 6 所述的液晶活性单体，其特征在于：所述透明基板为一玻璃基板。
  8. 如权利要求 6 所述的液晶活性单体，其特征在于：所述透明基板为一可挠式聚合物基板或一非可挠式聚合物基板。
  9. 一种液晶面板，具有一透明基板及一配向膜，其特征在于：所述配向膜的聚酰亚胺表面上扩散分布有一种液晶组成物，所述液晶组成物包含至少一种液晶活性单体，所述液晶活性单体用以使所述液晶组成物中的液晶分子相对于所述配向膜的聚酰亚胺表面具有预倾角，所述液晶活性单体的分子量介于 322 至 500 之间，所述液晶活性单体与聚酰亚胺表面聚合固化所需的紫外光波长是大于或等于 300 纳米。
  10. 如权利要求 9 所述的液晶面板，其特征在于：所述液晶组成物为滴下式注入技术的液晶组成物。
  11. 如权利要求 9 所述的液晶面板，其特征在于：所述透明基板为一玻璃基板。
  12. 如权利要求 9 所述的液晶面板，其特征在于：所述透明基板为一可挠式聚合物基板。
  13. 如权利要求 9 所述的液晶面板，其特征在于：所述透明基板为一非可挠式聚合物基板。
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