CN107418598B - 液晶材料、液晶显示面板及其制造方法 - Google Patents
液晶材料、液晶显示面板及其制造方法 Download PDFInfo
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- CN107418598B CN107418598B CN201710383852.7A CN201710383852A CN107418598B CN 107418598 B CN107418598 B CN 107418598B CN 201710383852 A CN201710383852 A CN 201710383852A CN 107418598 B CN107418598 B CN 107418598B
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- liquid crystal
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 152
- 239000000463 material Substances 0.000 title claims abstract description 92
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 108
- 229920006254 polymer film Polymers 0.000 claims abstract description 23
- 239000003795 chemical substances by application Substances 0.000 claims description 47
- 239000000178 monomer Substances 0.000 claims description 44
- 239000010408 film Substances 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 23
- 239000010409 thin film Substances 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 239000000565 sealant Substances 0.000 claims description 7
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 229920001721 polyimide Polymers 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 125000005396 acrylic acid ester group Chemical group 0.000 claims 1
- 239000004744 fabric Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 abstract description 8
- 230000001737 promoting effect Effects 0.000 abstract 1
- 238000001723 curing Methods 0.000 description 5
- 239000003292 glue Substances 0.000 description 5
- 238000013007 heat curing Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 5
- 230000008023 solidification Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- RGOVYLWUIBMPGK-UHFFFAOYSA-N nonivamide Chemical compound CCCCCCCCC(=O)NCC1=CC=C(O)C(OC)=C1 RGOVYLWUIBMPGK-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005320 surfactant adsorption Methods 0.000 description 1
Classifications
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- 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
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- 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
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- C09K19/14—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain
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- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
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- C09K2019/0425—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a specific unit that results in a functional effect
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- 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
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- C09K2019/122—Ph-Ph
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- 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
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Abstract
本发明涉及液晶材料、液晶显示面板及液晶显示面板的制造方法。本发明采用液晶材料在没有PI膜的基板上形成聚合物薄膜,以达到使得液晶面板正常显示的目的,同时提升产品信赖性,提高电压保持率,改善自取向液晶材料的配向不良、残像等问题。
Description
技术领域
本发明涉及显示技术领域,尤其涉及一种液晶材料、液晶显示面板及该液晶显示面板的制造方法。
背景技术
随着显示技术的发展,液晶显示器(Liquid Crystal Display,LCD)等平面显示装置因具有高画质、省电、机身薄及应用范围广等优点,而被广泛的应用于手机、电视、个人数字助理、数字相机、笔记本电脑、台式计算机等各种消费性电子产品,成为显示装置中的主流。
现有市场上的液晶显示装置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,两片玻璃基板中间有许多垂直和水平的细小电线,通过通电与否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膜(CF,Color Filter)基板、薄膜晶体管(TFT,Thin FilmTransistor)基板、夹于彩膜基板与薄膜晶体管基板之间的液晶(LC,Liquid Crystal)及密封胶框(Sealant)组成。
在液晶显示器(LCD)的CF基板和TFT基板上,分别有一层薄膜材料,其主要作用是使液晶分子按一定方向排列,我们称之为配向膜(常用聚酰亚胺(PI)材料)。这种配相膜主要分为摩擦配相型PI材料和光配相型PI材料,但是,无论那种配向材料都会有各自的缺点。首先摩擦配相向容易造成粉尘颗粒、静电残留、刷痕等问题降低工艺良率,而光配相材料虽然可以避免这些问题,但由于材料特性受限,耐热性和耐老化性不佳,同时锚定LC分子的能力也较弱,从而影响面板的品质;其次,PI材料本身就具有高极性和高吸水性,存储和运送容易造成变质而导致配相不均,并且PI材料价格昂贵,在TFT-LCD上成膜的工艺也较为复杂,导致面板成本提高。
因为PI具有均一性、密着性和稳定性的特点,所以它除了可以使液晶分子配向外,另一个重要的作用是可作为液晶上下两个基板的绝缘膜,在一帧的时间内必须保持加在上下两基板上的电压,防止上下基板中的离子等杂质扩散到液晶中,从而影响液晶的品质。
若将TFT-LCD中的PI膜省去,液晶分子将无法垂直排列,有一种方法可以省去TFT-LCD中的PI膜,就是在液晶中加入一种垂直取向剂,依靠这种表面活性剂吸附在ITO基板表面的特性使得液晶分子垂直排列,我们称这种含有垂直取向剂的材料为自取向液晶材料。
然而,如果完全省去PI膜,一方面面板会出现不均匀(mura)、液晶配向不良等问题,另一方面面板残像也会严重。
发明内容
本发明提供一种液晶材料、液晶显示面板及液晶显示面板的制作方法。本发明的液晶材料包含液晶分子(LC)、可聚合单体(RM)及垂直取向剂,所述可聚合单体和垂直取向剂在紫外光照射下可发生聚合反应,生成聚合物,沉积在基板上,形成可取代配向膜的聚合物薄膜,简化了液晶的配向制程,节约成本。
本发明的第一个方面是提供一种液晶材料,包括液晶分子、垂直取向剂和可聚合单体,其中所述垂直取向剂包括以下化合物中的一种或多种:
根据本发明所述的液晶材料的一些优选实施方式,所述可聚合单体选自丙烯酸酯及其衍生物、甲基丙烯酸酯及其衍生物、苯乙烯及其衍生物、环氧树脂与脂肪胺类环氧固化剂中的一种或多种。
优选地,所述可聚合单体选自
中的一种或两种。
根据本发明所述的液晶材料的一些优选实施方式,所述液晶分子的质量百分比为94%-99.8%。
根据本发明所述的液晶材料的一些优选实施方式,所述垂直取向剂的质量百分比为0.1%-5%。
根据本发明所述的液晶材料的一些优选实施方式,所述可聚合单体的质量百分比为0.1%-1%。
本发明的第二个方面是提供一种液晶显示面板,包括:
设置有配向膜的第一基板,
设置有聚合物薄膜的第二基板,其中所述第二基板上没有设置配向膜,所述聚合物薄膜是由垂直取向剂与可聚合单体聚合形成的,
设置在所述第一基板和所述第二基板之间的液晶层,其中所述液晶层包含液晶分子。
本发明提供的液晶显示面板,其中一个基板上设置配向膜,另外的基板上设置由可聚合单体和垂直取向剂形成的聚合物薄膜,一方面可达到液晶配向的目的,另一方面又能避免自取向液晶材料的配向不良、残像等问题。
根据本发明所述的液晶显示面板的一些优选实施方式,所述第一基板为薄膜晶体管基板(TFT),第二基板为彩膜基板(CF)。
根据本发明所述的液晶显示面板的另外一些优选实施方式,所述第一基板为彩膜基板,第二基板为薄膜晶体管基板。
根据本发明所述的液晶显示面板的一些优选实施方式,所述配向膜为聚酰亚胺(PI)膜,膜厚优选为30nm-120nm。
根据本发明所述的液晶显示面板的一些优选实施方式,所述垂直取向剂包括以下化合物中的一种或多种:
根据本发明所述的液晶显示面板的一些优选实施方式,所述可聚合单体选自丙烯酸酯及其衍生物、甲基丙烯酸酯及其衍生物、苯乙烯及其衍生物、环氧树脂与脂肪胺类环氧固化剂中的一种或多种。
优选地,所述可聚合单体选自
中的一种或两种。
本发明的第三个方面是提供一种用于制造液晶显示面板的方法,包括以下步骤:
步骤1):分别提供第一基板、第二基板和液晶材料,其中第一基板上配置有配向膜,第二基板上没有设置配向膜;
步骤2):在第二基板上滴加液晶材料,然后在第二基板的表面涂布密封胶,并在外围涂布导电胶;
步骤3):将第一基板和步骤2)处理后的第二基板贴合在一起,并对密封胶进行固化;
步骤4):对滴加在第二基板上的液晶材料施加电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,使垂直取向剂与可聚合单体发生聚合,聚合生成的聚合物沉积在第二基板朝向液晶材料的一侧,形成聚合物薄膜;
步骤5):停止施加电压,对经第一次紫外光照射后的液晶材料进行第二次紫外光照射,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在步骤4)形成的聚合物薄膜上。根据本发明所述方法的优选实施方式,步骤1)中,所述配向膜为聚酰亚胺(PI)膜,主要是应用在PSVA显示模式的PI材料,膜厚优选为30nm-120nm。
根据本发明所述方法的一些优选实施方式,所述第一基板为薄膜晶体管基板,所述第二基板为彩膜基板。
根据本发明所述方法的另外一些优选实施方式,所述第一基板为彩膜基板,所述第二基板为薄膜晶体管基板。
根据本发明所述方法的优选实施方式,所述液晶材料包括液晶分子、垂直取向剂和可聚合单体,其中所述垂直取向剂包括以下化合物中的一种或多种:
根据本发明所述方法的优选实施方式,所述可聚合单体选自丙烯酸酯及其衍生物、甲基丙烯酸酯及其衍生物、苯乙烯及其衍生物、环氧树脂与脂肪胺类环氧固化剂中的一种或多种。
优选地,所述可聚合单体选自
中的一种或两种。
根据本发明所述方法的优选实施方式,步骤1)中,所述液晶分子在所述液晶材料中的质量百分比为94%-99.8%。
根据本发明所述方法的优选实施方式,步骤1)中,所述垂直取向剂在所述液晶材料中的质量百分比为0.1%-5%。
根据本发明所述方法的优选实施方式,步骤1)中,所述可聚合单体在所述液晶材料中的质量百分比为0.1%-1%。
根据本发明所述方法的优选实施方式,步骤3)在真空条件下实施。
根据本发明所述方法的优选实施方式,步骤3)中,所述固化的方式为热固化或UV固化。
根据本发明所述方法的一些优选实施方式,对所述液晶材料施加的电压为13V-25V。
根据本发明所述方法的一些优选实施方式,第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s。
根据本发明所述方法的一些优选实施方式,第二次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为90min-180min。
根据本发明所述方法的一些优选实施方式,最终的聚合物薄膜的厚度为
在制备TFT-LCD面板过程中,在TFT或CF单侧制备一层PI膜后,采用自取向液晶材料在没有PI膜的基板上形成聚合物薄膜,以达到使得液晶面板正常显示的目的,同时提升产品信赖性,提高电压保持率,改善自取向液晶材料的配向不良、残像等问题。
附图说明
图1是根据本发明的液晶显示面板的制备方法的一个实施方式的示意图。
图2是根据本发明的液晶显示面板的制备方法的一个实施方式的示意图。
具体实施方式
以下结合实施例对本发明进行详细说明,但本发明并不受下述实施例限定。
实施例1
提供TFT基板、CF基板和自取向液晶材料,其中TFT基板上有PI膜,膜厚100nm,CF基板上无PI膜。所用自取向液晶材料中,垂直取向剂、可聚合单体(RM)和液晶分子(LC)的质量百分含量为垂直取向剂:可聚合单体(RM):液晶分子(LC)=0.5%:0.3%:99.2%。
所用的垂直取向剂的结构为:
所用的可聚合单体的结构为:
在CF基板上以ODF的方式滴加液晶材料,然后在CF基板的表面涂布密封胶,并在外围涂布导电胶。
之后,在真空环境下,将TFT基板和处理后的CF基板贴合在一起,并对密封胶进行固化,固化方式采用热固化或者UV固化。
然后,对滴加在CF基板上的液晶材料施加13-25V的电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s,使垂直取向剂与可聚合单体发生聚合。聚合生成的聚合物沉积在CF基板朝向液晶材料的一侧,形成聚合物薄膜。
最后,停止施加电压,对液晶材料进行第二次紫外光照射,第二次紫外光照射的的能量为85mW/cm2-100mW/cm2,照射时间为90-180min,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在聚合物薄膜上。最终聚合物薄膜的厚度大约为
除去垂直取向剂和可聚合单体的液晶材料构成液晶层。由此制备得到液晶显示面板。
实施例2
提供TFT基板、CF基板和自取向液晶材料,其中TFT基板上有PI膜,膜厚100nm,CF基板上无PI膜。所用自取向液晶材料中,垂直取向剂、可聚合单体(RM)和液晶分子(LC)的质量百分含量为垂直取向剂:可聚合单体(RM):液晶分子(LC)=1.5%:0.3%:98.2%。
所用的垂直取向剂的结构为
所用的可聚合单体的结构为
在CF基板上以ODF的方式滴加液晶材料,然后在CF基板的表面涂布密封胶,并在外围涂布导电胶。
然后,在真空环境下,将TFT基板和处理后的CF基板贴合在一起,并对密封胶进行固化,固化方式采用热固化或者UV固化。
之后,对滴加在CF基板上的液晶材料施加13-25V的电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s,使垂直取向剂与可聚合单体发生聚合。聚合生成的聚合物沉积在CF基板朝向液晶材料的一侧,形成聚合物薄膜。
最后,停止施加电压,对液晶材料进行第二次紫外光照射,第二次紫外光照射的的能量为85mW/cm2-100mW/cm2,照射时间为90-180min,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在聚合物薄膜上。最终聚合物薄膜的厚度大约为
除去垂直取向剂和可聚合单体的液晶材料构成液晶层。由此制备得到液晶显示面板。
实施例3
提供TFT基板、CF基板和自取向液晶材料,其中TFT基板上无PI膜,CF基板上有PI膜,膜厚100nm。所用自取向液晶材料中,所用自取向液晶材料中,垂直取向剂、可聚合单体(RM)和液晶分子(LC)的质量百分含量为垂直取向剂:可聚合单体(RM):液晶分子(LC)=可聚合单体(RM):液晶分子(LC)=0.5%:0.3%:99.2%。
所用的垂直取向剂的结构为:
所用的可聚合单体的结构为:
在TFT基板上以ODF的方式滴加液晶材料,然后在TFT基板的表面涂布密封胶,并在外围涂布导电胶。
然后,在真空环境下,将CF基板和处理后的TFT基板贴合在一起,并对密封胶进行固化,固化方式采用热固化或者UV固化;
之后,对所述液晶材料施加13-25V的电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s,使垂直取向剂与可聚合单体发生聚合,聚合生成的聚合物沉积在TFT基板朝向液晶材料的一侧,形成聚合物薄膜。
最后,停止施加电压,对液晶材料进行第二次紫外光照射,第二次紫外光照射的的能量为85mW/cm2-100mW/cm2,照射时间为90min-180min,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在聚合物薄膜上。最终聚合物薄膜的厚度大约为
除去垂直取向剂和可聚合单体的液晶材料构成液晶层。由此制备得到液晶显示面板。
对比例1
提供TFT基板、CF基板和自取向液晶材料,其中TFT基板和CF基板上均无PI。所用自取向液晶材料中,所用自取向液晶材料中,所用自取向液晶材料中,垂直取向剂、可聚合单体(RM)和液晶分子(LC)的质量百分含量为垂直取向剂:可聚合单体(RM):液晶分子(LC)=0.5%:0.3%:99.2%。
所用的垂直取向剂的结构为:
所用的可聚合单体的结构为
分别在TFT基板和CF基板上以ODF的方式滴加液晶材料,然后分别在TFT基板和CF基板的表面涂布密封胶,并在外围涂布导电胶。
然后,在真空环境下,将处理后的CF基板和TFT基板贴合在一起,并对密封胶进行固化,固化方式采用热固化或者UV固化。
之后,对所述液晶材料施加13-25V的电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s,使垂直取向剂与可聚合单体发生聚合,聚合生成的聚合物分别沉积在TFT基板和CF基板上,形成聚合物薄膜。
最后,停止施加电压,对液晶材料进行第二次紫外光照射,第二次紫外光照射的的能量为85mW/cm2-100mW/cm2,照射时间为90min-180min,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在聚合物薄膜上。最终聚合物薄膜的厚度大约为
除去垂直取向剂和可聚合单体的液晶材料构成液晶层。由此制备得到液晶显示面板。
表1显示了实施例1-3及对比例1制备的液晶显示面板的性能。
表1
通过表1可以看出,相比对比例1,实施例1-3制备得到的液晶显示面板在正常显示的同时提高了电压保持率,改善了自取向液晶材料的配向不良、残像等问题。
上述对于示例性实施例进行说明,不应理解为对本发明进行限制。虽然已经公开了多个示例性实施例,本领域技术人员很容易理解示例性实施例中可能的多种变形,而没有从本质上偏离本发明的新颖教导和优点。因此,所有这些变形目的是包含在如权利要求所定义的本发明的范围中。可以理解的是,前述是对多种示例性实施例的说明,并不是限制公开的特殊实施例、公开实施例的变形以及其它示例性实施例,目的是包含于所附权利要求的范围中。
Claims (6)
1.一种液晶显示面板,包括:
设置有配向膜的第一基板,
设置有聚合物薄膜的第二基板,其中所述第二基板上没有设置配向膜,所述聚合物薄膜是由垂直取向剂与可聚合单体聚合形成的,所述垂直取向剂包括:
设置在所述第一基板和所述第二基板之间的液晶层,其中所述液晶层包含液晶分子。
2.根据权利要求1所述的液晶显示面板,其特征在于,所述配向膜为聚酰亚胺膜,膜厚为30nm-120nm,所述第一基板为薄膜晶体管基板,且第二基板为彩膜基板;或者所述第一基板为彩膜基板,且第二基板为薄膜晶体管基板。
3.根据权利要求1或2所述的液晶显示面板,其特征在于,所述可聚合单体选自丙烯酸酯及其衍生物、甲基丙烯酸酯及其衍生物、苯乙烯及其衍生物、环氧树脂与脂肪胺类环氧固化剂中的一种或多种。
4.一种用于制造液晶显示面板的方法,包括以下步骤:
步骤1):分别提供第一基板、第二基板和液晶材料,其中第一基板上配置有配向膜,第二基板上没有设置配向膜;
步骤2):在第二基板上滴加液晶材料,然后在第二基板的表面涂布密封胶,并在外围涂布导电胶;
步骤3):将第一基板和步骤2)处理后的第二基板贴合在一起,并对密封胶进行固化;
步骤4):对滴加在第二基板上的液晶材料施加电压,以使液晶分子发生偏转,然后对液晶材料进行第一次紫外光照射,使垂直取向剂与可聚合单体发生聚合,聚合生成的聚合物沉积在第二基板朝向液晶材料的一侧,形成聚合物薄膜;
步骤5):停止施加电压,对经第一次紫外光照射后的液晶材料进行第二次紫外光照射,以使液晶材料中残留的垂直取向剂和可聚合单体聚合,生成的聚合物沉积在步骤4)形成的聚合物薄膜上,其中,所述垂直取向剂包括:
5.根据权利要求4所述的方法,其特征在于,步骤4)中,对所述液晶材料施加的电压为13V-25V;第一次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为40s-100s;步骤5)中,第二次紫外光照射所用紫外光能量为85mW/cm2-100mW/cm2,照射时间为90min-180min。
6.根据权利要求4或5所述的方法,其特征在于,步骤1)中,所述配向膜为聚酰亚胺膜,膜厚为30nm-120nm,所述第一基板为薄膜晶体管基板,第二基板为彩膜基板,或者所述第一基板为彩膜基板,第二基板为薄膜晶体管基板;步骤5)得到的最终的聚合物薄膜的厚度为
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