WO2014075261A1 - 感光单体及液晶面板 - Google Patents

感光单体及液晶面板 Download PDF

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Publication number
WO2014075261A1
WO2014075261A1 PCT/CN2012/084663 CN2012084663W WO2014075261A1 WO 2014075261 A1 WO2014075261 A1 WO 2014075261A1 CN 2012084663 W CN2012084663 W CN 2012084663W WO 2014075261 A1 WO2014075261 A1 WO 2014075261A1
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Prior art keywords
liquid crystal
substrate
crystal panel
photosensitive monomer
alignment film
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PCT/CN2012/084663
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English (en)
French (fr)
Inventor
郝思坤
谢忠憬
邱钟毅
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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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Priority to US13/703,942 priority Critical patent/US8999462B2/en
Publication of WO2014075261A1 publication Critical patent/WO2014075261A1/zh
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/62Halogen-containing esters
    • C07C69/65Halogen-containing esters of unsaturated acids
    • C07C69/653Acrylic acid esters; Methacrylic acid esters; Haloacrylic acid esters; Halomethacrylic acid esters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/52Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
    • C09K19/54Additives having no specific mesophase characterised by their chemical composition
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K2019/0444Liquid 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
    • C09K2019/0448Liquid 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
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K19/00Liquid crystal materials
    • C09K19/04Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/06Non-steroidal liquid crystal compounds
    • C09K19/08Non-steroidal liquid crystal compounds containing at least two non-condensed rings
    • C09K19/10Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
    • C09K19/12Non-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
    • C09K2019/121Compounds containing phenylene-1,4-diyl (-Ph-)
    • C09K2019/122Ph-Ph
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133397Constructional arrangements; Manufacturing methods for suppressing after-image or image-sticking
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133711Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1337Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133746Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for high pretilt angles, i.e. higher than 15 degrees

Definitions

  • the present invention relates to a photosensitive monomer and a liquid crystal panel having the same, and more particularly to a photosensitive monomer to which a fluorine atom is added and a liquid crystal panel having the photosensitive monomer.
  • Liquid crystal display is a flat panel display device that uses the characteristics of liquid crystal materials to display images. Compared with other display devices, it has the advantages of lightness, low driving voltage and low power consumption. Mainstream products in the consumer market.
  • the liquid crystal panel is the most important component of the liquid crystal display, and includes a vacuum-bonded thin film transistor (TFT) array substrate, a color filter (CF) substrate, a liquid crystal layer disposed therebetween, and an alignment film.
  • the alignment film is disposed on the TFT array substrate and/or the CF substrate for controlling a predetermined initial state arrangement of the liquid crystal molecules of the liquid crystal layer, thereby affecting display characteristics of the liquid crystal panel.
  • PSVA Polymer stabilized vertical alignment
  • the liquid crystal active monomer (RM) is first doped into the liquid crystal, and then the liquid crystal molecules are generated by a power supply to generate a pretilt angle, and the polyimide (PI) of the RM and the alignment film is linked. Finally, ultraviolet light is irradiated to react the polymer monomer into a polymer to fix the pretilt angle of the liquid crystal molecules.
  • SCVA surface controlled vertical alignment
  • a first object of the present invention is to provide a photosensitive monomer which uses a fluorine atom to replace a hydrogen ion of a benzene ring in a hard core of a photosensitive monomer, thereby increasing the electronegativity of the hard core to a lower curing voltage. Driven, a large pretilt angle can be formed, which in turn reduces the reaction time of the display.
  • a photosensitive monomer is mixed in a liquid crystal-aligning film, and the photosensitive monomer is represented by the following formula I: Formula I, wherein
  • the A group is a hard core, and the hard core is a biphenyl group in which at least one hydrogen atom is substituted by a fluorine atom; the n is a number of fluorine atoms replacing a hydrogen atom, and n is greater than or equal to 1.
  • i or ii means:
  • Nl and n2 are the number of fluorine atoms replacing a hydrogen atom, and nl and n2 are respectively greater than or equal to 1;
  • the Pi group is represented by the following chemical formula iii: Formula iii, wherein The R group is a fluorenyl group having 1 to 12 carbon atoms, wherein one or two non-adjacent CH 2 groups are
  • the photosensitive monomer is in the form of any of the following molecular formula II ⁇ Formula VI;
  • the alignment film of the liquid crystal panel is surface controlled vertical alignment type
  • a second object of the present invention is to provide a liquid crystal panel including a first substrate, a second substrate, and a liquid crystal composition filled between the first and second substrates,
  • a first transparent electrode layer and a first alignment film are sequentially disposed on the first substrate
  • a second transparent electrode layer and a second alignment film are sequentially disposed on the second substrate.
  • the liquid crystal composition is in contact with the first and second alignment films, wherein
  • the first and second alignment films comprise at least one of the above-mentioned photosensitive monomers.
  • the weight ratio of the photosensitive monomer in the first alignment film is
  • 1% to 20% preferably 1% to 10%, and most preferably 10%.
  • the weight ratio of the photosensitive monomer in the second alignment film is
  • 1% to 20% preferably 1% to 10%, and most preferably 10%.
  • the liquid crystal composition comprises at least one liquid crystal molecule and at least one liquid crystal reactive monomer.
  • the first substrate is a color filter substrate
  • the second substrate is Thin film transistor array substrate.
  • the first and second alignment films are surface-aligned vertical alignment type alignment films.
  • the liquid crystal composition is a liquid crystal composition of a dropping type injection technique.
  • the substitution of a fluorine atom for the hydrogen atom of the hard core group increases the electronegativity of the hard core, thereby reducing the curing required for the alignment film in the alignment film curing process of the SCVA technique. Voltage. There are two main methods for introducing a fluorine atom into the photosensitive monomer:
  • a fluorine-containing small molecule is used as a raw material for synthesis, and a new C F bond is not formed during the reaction, and a fluorine atom is introduced by an indirect method.
  • liquid crystal molecules and liquid crystal reactive monomers of the present invention are selected from liquid crystal molecules and liquid crystal active monomers known in the art.
  • FIG. 1 is a schematic view showing a liquid crystal panel and a liquid crystal composition contained therein according to a preferred embodiment of the present invention.
  • FIG. 2 is a schematic view of a liquid crystal composition of a liquid crystal panel after applying a voltage according to a preferred embodiment of the present invention. among them:
  • first transparent electrode layer 32 second transparent electrode layer
  • the photo sensitive component is suitably used in an alignment film material of a surface controlled vertical alignment (SCVA) type having the following molecular formula II ⁇ override any of the representations:
  • SCVA surface controlled vertical alignment
  • a liquid crystal panel includes a first substrate 11 , a second substrate 12 , and a first substrate and a second substrate.
  • the first substrate 11 is a color filter substrate
  • the second substrate 12 is a thin film transistor array substrate.
  • the liquid crystal composition 20 is a liquid crystal composition of a dropping type implantation technique and includes liquid crystal molecules 21.
  • a first transparent electrode layer 31 and a first alignment film 41 are disposed on the first substrate 11, and a second transparent electrode layer 32 and a second alignment film 42 are sequentially disposed on the second substrate 12.
  • the liquid crystal composition 20 is in contact with the first alignment film 41 and the second alignment film 42.
  • the alignment film contains any of the above-mentioned photosensitive monomers 50.
  • the photosensitive monomer 50 is suitable for use in the first and second alignment films 41, 42 of the surface controlled vertical alignment (SCVA) technique, that is, the first and second alignment films 41, 42 have a surface control vertical for use.
  • SCVA surface controlled vertical alignment
  • the weight ratio of the photosensitive monomer 50 in the first alignment film 11 is 10%; and the weight ratio of the photosensitive monomer in the second alignment film is 10%.
  • the liquid crystal panel of the present invention generates a pretilt angle by applying a voltage to the transparent electrode, and finally irradiates the ultraviolet light to react the polymer monomer into a polymer to fix the pretilt angle of the liquid crystal molecules.
  • Table 1 is the current SCVA technology (hydrogen atom that does not use a fluorine atom to replace the hard core of the monomer:) and SCVA technology using the photosensitive monomer of the present invention (replacement of the monomer hard core with at least one fluorine atom) Comparison of at least one hydrogen atom:).
  • the SCVA technology of the photosensitive monomer of the present invention overcomes the shortcomings of the current SCVA technology.
  • the photosensitive monomer of the present invention replaces the hydrogen atom of the hard core of the monomer with a fluorine atom, thereby increasing the electronegativity of the hard core, thereby lowering the curing voltage required for the alignment film in the alignment film curing process of the SCVA technique.
  • the photosensitive monomer of the invention reduces the curing voltage and curing time in the curing process of the alignment film of the liquid crystal panel; and increases the pretilt angle of the liquid crystal molecules to reduce the reaction time of the liquid crystal display, thereby reducing image sticking and color unevenness (MURA) phenomenon.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Liquid Crystal (AREA)

Abstract

提供一种感光单体及液晶面板。该感光单体利用氟原子取代单体硬核的氢原子,增大了硬核的电负性,降低了固化电压和固化时间,增大了液晶分子的预倾角,减小了液晶显示器的反应时间,降低了残影和显色不均匀现象。

Description

感光单体及液晶面板 技术领域
本发明涉及一种感光单体及具有所述感光单体的液晶面板,特别是涉及一 种加入了氟原子的感光单体及具有所述感光单体的液晶面板。
背景技术
液晶显示器 (Liquid Crystal Display, LCD) 是利用液晶材料的特性来显示 图像的一种平板显示装置, 其相较于其他显示装置而言具有轻薄、低驱动电压 及低功耗等优点, 已经成为整个消费市场上的主流产品。
液晶面板是液晶显示器最主要的组成配件,其包括真空贴合的薄膜晶体管 (TFT) 阵列基板、 彩色滤光片 (CF)基板、 设置在两者之间的液晶层及配向 膜。 所述配向膜设置在 TFT阵列基板和 /或 CF基板上, 用于控制液晶层的液 晶分子的预定的初始状态排列, 从而影响液晶面板的显示特性。
聚合物稳定垂直配向 (polymer stabilized vertical alignment, PSVA) 技术 以其高穿透率、 高对比度和快速响应等特点, 渐渐成为主流。 在传统的 PSVA 技术中, 先将液晶活性单体 (RM) 掺杂于液晶内, 之后透过供电使液晶分子 产生一预倾角, 让 RM与配向膜的聚酰亚胺 (PI)链结, 最后再照射紫外光让 聚合物单体反应成聚合物, 使液晶分子的预倾角固定。
但传统的 PSVA技术中存在液晶分子选择有限、液晶分子和 RM的相容性 不佳, 以及运输和储存等问题。
为解决 PSVA 技术的诸多问题, 研发了表面控制垂直配向 (surface controlled vertical alignment, SCVA) 技术。 相较于 PSVA技术, SCVA技术的 RM分子掺杂于配向材料中, 因此对于液晶分子的选择更多、 不存在液晶分子 和 RM的兼容性问题, 同时也不存在运输和储存等问题; 同时还具有杂质少、 可靠性高等优点。 但是, 在 SCVA技术中需要对基板施加的电压 (30V) 远高 于 PSVA技术中的电压 (10V) , 液晶分子的预倾角 (小于 1 ° ) 过小, 致使显 示器的反应时间过长。 因此, 有必要提供对现有技术进行改进, 以解决现有技术所存在的问题。 发明内容
本发明的第一个目的是提供一种感光单体,其使用氟原子取代感光单体的 硬核中苯环的氢离子, 增大硬核的电负性, 使其在较小的固化电压驱动下, 就 可以形成较大的预倾角, 进而减小显示器的反应时间。
为实现上述目的, 本发明公开以下技术方案: 一种感光单体, 混掺于一液 晶 一配向膜中, 所述感光单体以下述分子通式 I表示:
Figure imgf000003_0001
式 I, 其中,
A基团为硬核, 所述硬核为至少一个氢原子被氟原子取代的联苯基团; 所述 n为取代氢原子的氟原子个数, n大于或等于 1。
i或 ii表示:
Figure imgf000003_0002
其中,
nl和 n2为取代氢原子的氟原子个数, nl和 n2分别大于或等于 1 ;
所述 Pi基团以下述化学式 iii表示:
Figure imgf000003_0003
式 iii, 其中 R基团为具有 1~12个碳原子的炕基, 其中一个或两个不相邻 CH2基团可
Figure imgf000004_0001
在本发明一实施例中, 所述感光单体以下述分子通式 II〜覆中任一表
Figure imgf000004_0002
式 VI;
式 VII;或
Figure imgf000005_0001
式覆。 在本发明一实施例中, 所述液晶面板的配向膜为表面控制垂直配向型
(SC-VA)的配向膜。
本发明的第二个目的是提供一种液晶面板, 包括一第一基板、 一第二基板 和填充于所述第一及第二基板之间的液晶组合物,
所述第一基板上依次配置有一第一透明电极层和一第一配向膜,
所述第二基板上依次配置有一第二透明电极层和一第二配向膜,
所述液晶组合物与所述第一及第二配向膜接触, 其中,
所述第一及第二配向膜包含至少一种上述的感光单体。
在本发明一实施例中, 所述感光单体在所述第一配向膜中的重量比例为
1% ~ 20%, 优选 1% ~ 10%, 最优选为 10%。
在本发明一实施例中, 所述感光单体在所述第二配向膜中的重量比例为
1% ~ 20%, 优选 1% ~ 10%, 最优选为 10%。
在本发明一实施例中,所述液晶组合物包括至少一个液晶分子和至少一个 液晶活性单体。
在本发明一实施例中, 所述第一基板为彩色滤光片基板, 所述第二基板为 薄膜晶体管阵列基板。
在本发明一实施例中,所述第一及第二配向膜为表面控制垂直配向型的配 向膜。
在本发明一实施例中, 所述液晶组成物为滴下式注入技术的液晶组成物。 在本发明的感光单体中, 利用氟原子取代所述硬核基团的氢原子, 增大了 硬核的电负性,从而在 SCVA技术的配向膜固化制程中降低配向膜所需的固化 电压。 向所述感光单体引入氟原子的方法主要有以下两种:
① 采用 F2、 HF、 SF4等氟化试剂, 直接将 C H键或其他官能团转换为 C — F键;
② 采用含氟小分子作为合成原料,在反应过程中不形成新 C F键,通过 间接方法引入氟原子。
需要说明的是,本发明所述的液晶分子和液晶活性单体是选用本领域已知 的液晶分子和液晶活性单体。
本发明的积极效果是:
( 1 ) 降低液晶面板固化制程中的固化电压和固化时间;
(2 ) 增大液晶分子的预倾角, 以减小液晶显示器的反应时间, 从而降低 残影和显色不均匀 (MURA) 现象。
附图说明
图 1是本发明一较佳实施例的液晶面板及其所含液晶组合物的示意图。
图 2是本发明一较佳实施例的液晶面板在施加电压后的液晶组合物的示意图。 其中:
11一第一基板; 12—第二基板;
20—液晶组合物 21—液晶分子;
31—第一透明电极层 32—第二透明电极层;
41 第一配向膜; 42 第二配向膜;
50—感光单体。
具体实施方式
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。
根据本发明一较佳实施例中, 所述感光单体 (photo sensitive component)适 合应用在混掺在表面控制垂直配向 (SCVA) 型的配向膜材料中, 所述感光单 体以下述分子通式 II〜覆中任一表示:
Figure imgf000007_0001
式 VII;或
Figure imgf000008_0001
式覆。 如图 1所示的,根据本发明的一较佳实施例,本发明还提供一种液晶面板, 包括一第一基板 11、 一第二基板 12和填充于所述第一及第二基板之间的液晶 组合物 20。所述第一基板 11为彩色滤光片基板,所述第二基板 12为薄膜晶体 管阵列基板。 所述液晶组合物 20为滴下式注入技术的液晶组成物, 包含液晶 分子 21。
在所述第一基板 11 上依次配置有一第一透明电极层 31 和一第一配向膜 41,在所述第二基板 12上依次配置有一第二透明电极层 32和一第二配向膜 42。 所述液晶组合物 20与所述第一配向膜 41及第二配向膜 42接触。
所述配向膜中包含上述任一种感光单体 50。 所述感光单体 50适用在表面 控制垂直配向 (SCVA)技术的第一及第二配向膜 41、 42中, 也就是所述第一 及第二配向膜 41、 42具有专为使用表面控制垂直配向工艺而设计的配向组成 物, 且当中包含聚酰亚胺及所述感光单体 50。 所述感光单体 50在所述第一配 向膜 11中的重量比例为 10%; 所述感光单体在所述第二配向膜中的重量比例 为 10%。
请参见图 2, 本发明的液晶面板通过在透明电极上施加电压, 液晶分子产 生一预倾角, 最后再照射紫外光让聚合物单体反应成聚合物, 使液晶分子的预 倾角固定。
请参见表一, 表一是将目前 SCVA技术 (未利用氟原子取代单体硬核的氢 原子:)与使用本发明感光单体的 SCVA技术 (利用至少一氟原子取代单体硬核的 至少一氢原子:)进行的比较。
目前 SCVA技术与使用本发明感光单体的 SCVA技术的比较
Figure imgf000009_0001
由表一可以看出, 使用本发明感光单体的 SCVA技术, 克服了目前 SCVA 技术的缺点。
本发明的感光单体, 利用氟原子取代单体硬核的氢原子, 增大了硬核的电 负性, 从而在 SCVA技术的配向膜固化制程中降低配向膜所需的固化电压。本 发明的感光单体降低了液晶面板配向膜固化制程中的固化电压和固化时间;还 增大了液晶分子的预倾角, 以减小液晶显示器的反应时间, 从而降低残影和显 色不均匀 (MURA) 现象。
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。

Claims

权 利 要 求 书
1. 一种感光单体, 混掺于一液晶面板的一配向膜中, 其中所述感光单体以下
Figure imgf000010_0001
式 I, 其中,
A基团为硬核, 所述硬核为至少一个氢原子被氟原子取代的联苯基团, 所述 n 为取代氢原子的氟原子个数, n大于或等于 1, 所述 A基团以下述化学式 i或
Figure imgf000010_0002
其中,
nl和 n2为取代氢原子的氟原子个数, nl和 n2分别大于或等于 1 ;
所述 Pi基团以下述化学式 iii表示:
Figure imgf000010_0003
式 iii, 其中 R基团为具有 1~12个碳原子的炕基, 其中一个或两个不相邻 CH2基团可 被 -0-、 -CH=CH- 、 -CO- 、 - OCO-或 -COO-替代, 使得氧原子不直接相 互键接; 以及
Figure imgf000011_0001
式 iv。
2. 如权利要求 1所述的感光单体, 其中所述感光单体以下述分子通式 II〜覆中 一表;
Figure imgf000011_0002
式 VI; 式 VII;或
Figure imgf000012_0001
式覆。
3. 如权利要求 1 所述的感光单体, 其中所述液晶面板的配向膜为表面控制垂 直配向型的配向膜。
4. 一种液晶面板, 包括一第一基板、 一第二基板和填充于所述第一及第二基 板之间的液晶材料, 其中:
所述第一基板上依次配置有一第一透明电极层和一第一配向膜,
所述第二基板上依次配置有一第二透明电极层和一第二配向膜,
所述液晶材料与所述第一及第二配向膜接触, 其中,
所述第一及第二配向膜包含至少一种如权利要求 1~3中任一所述的感光单体。
5. 如权利要求 4所述的液晶面板, 其中所述感光单体在所述第一配向膜中的 重量比例为 1% ~ 20%。
6. 如权利要求 4所述的液晶面板, 其中所述感光单体在所述第二配向膜中的 重量比例为 1% ~ 20%。
7. 如权利要求 4所述的液晶面板, 其中所述第一基板为彩色滤光片基板, 所 述第二基板为薄膜晶体管阵列基板。
8. 如权利要求 4所述的液晶面板, 其中所述液晶组成物为滴下式注入技术的 液晶组成物。
9. 如权利要求 4所述的液晶面板, 其中所述第一及第二配向膜为表面控制垂 直配向型的配向膜。
PCT/CN2012/084663 2012-11-14 2012-11-15 感光单体及液晶面板 Ceased WO2014075261A1 (zh)

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