CN113122272A - 液晶组合物、液晶显示元件、液晶显示器 - Google Patents
液晶组合物、液晶显示元件、液晶显示器 Download PDFInfo
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- CN113122272A CN113122272A CN201911394897.XA CN201911394897A CN113122272A CN 113122272 A CN113122272 A CN 113122272A CN 201911394897 A CN201911394897 A CN 201911394897A CN 113122272 A CN113122272 A CN 113122272A
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- 125000004432 carbon atom Chemical group C* 0.000 claims description 127
- 125000000217 alkyl group Chemical group 0.000 claims description 28
- 125000003545 alkoxy group Chemical group 0.000 claims description 23
- 125000003342 alkenyl group Chemical group 0.000 claims description 13
- -1 fluoro-1, 4-phenylene Chemical group 0.000 claims description 13
- 125000001995 cyclobutyl group Chemical group [H]C1([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 12
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- 239000011159 matrix material Substances 0.000 claims description 10
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- 125000004955 1,4-cyclohexylene group Chemical group [H]C1([H])C([H])([H])C([H])([*:1])C([H])([H])C([H])([H])C1([H])[*:2] 0.000 claims description 6
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
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- 239000002019 doping agent Substances 0.000 description 4
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- UWCWUCKPEYNDNV-LBPRGKRZSA-N 2,6-dimethyl-n-[[(2s)-pyrrolidin-2-yl]methyl]aniline Chemical compound CC1=CC=CC(C)=C1NC[C@H]1NCCC1 UWCWUCKPEYNDNV-LBPRGKRZSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical group [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 125000002947 alkylene group Chemical group 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
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- 125000004776 1-fluoroethyl group Chemical group [H]C([H])([H])C([H])(F)* 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
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- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000006612 decyloxy group Chemical group 0.000 description 1
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- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000004216 fluoromethyl group Chemical group [H]C([H])(F)* 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
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- 125000003187 heptyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000005446 heptyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003707 hexyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
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- 125000002510 isobutoxy group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])O* 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003253 isopropoxy group Chemical group [H]C([H])([H])C([H])(O*)C([H])([H])[H] 0.000 description 1
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- 125000005647 linker group Chemical group 0.000 description 1
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- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
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- PQIOSYKVBBWRRI-UHFFFAOYSA-N methylphosphonyl difluoride Chemical group CP(F)(F)=O PQIOSYKVBBWRRI-UHFFFAOYSA-N 0.000 description 1
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- 125000006606 n-butoxy group Chemical group 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003506 n-propoxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000006611 nonyloxy group Chemical group 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000005447 octyloxy group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])O* 0.000 description 1
- 125000004115 pentoxy group Chemical group [*]OC([H])([H])C([H])([H])C([H])([H])C(C([H])([H])[H])([H])[H] 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 238000004445 quantitative analysis Methods 0.000 description 1
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- 239000000758 substrate Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/42—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40
- C09K19/44—Mixtures of liquid crystal compounds covered by two or more of the preceding groups C09K19/06 - C09K19/40 containing compounds with benzene rings directly linked
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- C09K19/06—Non-steroidal liquid crystal compounds
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- C09K19/3001—Cyclohexane rings
- C09K19/3028—Cyclohexane rings in which at least two rings are linked by a carbon chain containing carbon to carbon single bonds
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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
- 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
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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
- 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
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- 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
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- C09K2019/121—Compounds containing phenylene-1,4-diyl (-Ph-)
- C09K2019/123—Ph-Ph-Ph
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- C09K19/06—Non-steroidal liquid crystal compounds
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- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3004—Cy-Cy
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- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
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- C09K2019/301—Cy-Cy-Ph
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- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3016—Cy-Ph-Ph
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- C09K19/06—Non-steroidal liquid crystal compounds
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- C09K19/3001—Cyclohexane rings
- C09K19/3003—Compounds containing at least two rings in which the different rings are directly linked (covalent bond)
- C09K2019/3027—Compounds comprising 1,4-cyclohexylene and 2,3-difluoro-1,4-phenylene
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Abstract
本公开涉及液晶组合物,包含该液晶组合物的液晶显示元件、液晶显示器,属于液晶显示领域。本公开的液晶组合物,包含式Ⅰ所示的化合物、以及一种或多种式Ⅱ所示的化合物,该液晶组合物可以增大介电各向异性、提高电压保持率。
Description
技术领域
本公开属于液晶显示领域,更具体地,涉及液晶组合物及包含该液晶组合物的液晶显示元件、液晶显示器。
背景技术
显示是把电信号(数据信息)转变为可视光(视觉信息)的过程,平板显示器(FlatPanel Display,FPD)是目前最为流行的一类显示设备。液晶显示器(Liquid CrystalDisplay,LCD)是FPD中最早被开发出来,并被商品化的产品。目前,薄膜晶体管液晶显示器(Thin Film Transistor LiquidCrystal,TFT-LCD)已经成为LCD应用中的主流产品。
TFT-LCD的发展经历了漫长的基础研究阶段,在实现大生产,商业化之后,TFT-LCD产品以其轻薄、环保、高性能等优点,迅速得到市场的认可,其逐渐向大尺寸和多种类应用发展。无论是小尺寸的手机屏、大尺寸的笔记本电脑(Notebook PC)或监视器(Monitor),以及大型化的液晶电视(LCDTV),到处可见TFT-LCD的应用。TFT-LCD可分为三大类,分别是扭曲向列/超扭曲向列(TN/STN)型、平面转换(IPS)型、及垂直配向(VA)型。早期商用的TFT-LCD产品基本采用了扭曲向列(Twisted Nematic,TN)型显示模式,其最大问题是视角不够大。随着TFT-LCD产品尺寸的增加,特别是TFT-LCD在TV领域的应用,具有广视野角特点的面内切换(In-PlaneSwiching,IPS)显示模式被开发出来并加以运用。IPS显示模式最早由美国人R.Soref(索里夫)在1974年以论文形式发表,并由德国人G.Baur(鲍尔)提出将其作为广视角技术应用于TFTLCD。1995年,日本日立公司开发出了世界首款13.3寸IPS模式的广视野角TFT-LCD产品。
VA型液晶显示器相对其他种类的液晶显示器具有极高的对比度,是因为在不加电的暗态时,液晶分子垂直于基板表面排列,不产生任何相位差,漏光极低,暗态亮度很小,对比度很高,使其在大尺寸显示,如电视等方面具有非常广的应用。然而,现有技术中的液晶显示器响应速度不够快、阈值电压不够低、电压保持率不够高、离子密度不够低、显示良品率较低已经成为显示器达到更高性能规格的主要障碍,改进上述各项指标也是各器件厂商一直追求的目标。
发明内容
为了解决现有技术中存在的问题,本发明人等进行深入研究后发现,通过使用本公开的液晶组合物,可以增大液晶材料介电各向异性、提高电压保持率。
本公开的另一目的在于提供一种液晶显示元件,其包含本公开的液晶组合物,该液晶显示元件具有快的响应速度。
本公开的再一目的在于提供一种液晶显示器,其包含本公开的液晶组合物,该液晶显示器具有快的响应速度。
为达到上述目的,本公开采用下述技术方案:
本公开提供液晶组合物,其中包含式Ⅰ所示的化合物、以及一种或多种式Ⅱ所示的化合物,
式Ⅱ中,R1表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基;R1所示基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代;
R2表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基。
本公开还提供液晶显示元件,其包含本公开的液晶组合物,所述液晶显示元件为有源矩阵寻址显示元件或者无源矩阵寻址显示元件。
本公开还提供液晶显示器,其包含本公开的液晶组合物,所述液晶显示器为有源矩阵寻址显示器或者无源矩阵寻址显示器。
发明效果
本公开的有益效果在于,本发明的液晶组合物具有较大的液晶材料介电各向异性、较高的电压保持率。包含该液晶组合物的液晶显示元件、液晶显示器具有快的响应速度,进而实现提高液晶显示器性能的效果。
具体实施方式
[液晶组合物]
本公开的液晶组合物包含式Ⅰ所示的化合物、以及一种或多种式Ⅱ所示的化合物,
式Ⅱ中,R1表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基;R1所示基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代,可以列举出例如,1,2-亚环戊基,1,3-亚环戊基,1,2-亚环丁基,1,3-亚环丁基;
R2表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基。
本公开的液晶组合物能够增大介电各向异性和提高电压保持率,包含该液晶组合物的液晶显示元件、液晶显示器具有低驱动电压、快的响应速度。
作为前述碳原子数为1~10的烷基,可以列举出例如,甲基、乙基、正丙基、异丙基、正丁基、异丁基、叔丁基、正戊基、异戊基、己基、庚基、辛基、壬基、癸基等。
作为前述的碳原子数为1~10的烷氧基,可以列举出例如,甲氧基、乙氧基、正丙氧基、异丙氧基、正丁氧基、异丁氧基、戊氧基、己氧基、庚氧基、辛氧基、壬氧基、癸氧基等。
前述的氟取代的碳原子数为1~10的烷基、氟取代的碳原子数为2~10的链烯基中的“氟取代”可以是单氟取代,或者、二氟取代、三氟取代等多氟取代,也可以是全氟取代,对氟的取代数没有特别的限定。例如,作为氟取代的碳原子数为1~10的烷基,可以列举出氟代甲基、二氟甲基、三氟甲基、1-氟代乙基、2-氟代乙基、1,2-二氟乙基、1,1-二氟乙基、1,1,2-三氟乙基、1,1,1,2,2-五氟取代乙基等但不限于此。
本公开的液晶组合物中,优选地,前述式Ⅱ所示的化合物选自下述式Ⅱ-1~Ⅱ-6所示的化合物组成的组:
其中,R11、R21表示碳原子数为1~10的烷基。
本公开的液晶组合物中,优选地,还包含一种或多种式Ⅲ所示化合物:
式Ⅲ中,R3、R4各自独立地表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、氟取代的碳原子数为2~10的链烯基、碳原子数为3~8的链烯氧基、或者、氟取代的碳原子数为3~8的链烯氧基;
R3、R4所示基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代;
作为前述亚环戊基、亚环丁基,可以列举出例如,1,2-亚环戊基,1,3-亚环戊基,1,2-亚环丁基,1,3-亚环丁基;
Z1、Z2各自独立地表示单键、-CH2CH2-、-OCH2-或-CH2O-;
m表示0或1;n表示0、1或2。
前述的式Ⅲ所示化合物具有负介电各项异性,通过在本公开的液晶组合物中含有式Ⅲ所示化合物,可以调节液晶组合物的驱动电压。
本公开的液晶组合物中,优选地,前述式Ⅲ所示的化合物选自下述式Ⅲ-1~Ⅲ-11所示的化合物组成的组:
其中:
R31、R41各自独立地表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、氟取代的碳原子数为2~10的链烯基、碳原子数为3~8的链烯氧基、或者、氟取代的碳原子数为3~8的链烯氧基;
R31、R41所示基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代;
作为前述亚环戊基、亚环丁基,可以列举出例如,1,2-亚环戊基,1,3-亚环戊基,1,2-亚环丁基,1,3-亚环丁基。
本公开的液晶组合物优选还包含一种或多种式Ⅳ所示化合物:
其中,
R5、R6表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、或者、氟取代的碳原子数为2~10的链烯基;
通过在本公开的液晶组合物中含有式Ⅳ所示化合物,能够降低液晶组合物的互溶性,降低旋转粘度,从而提高本公开的液晶组合物的响应速度。
本公开的液晶组合物,优选地,前述的式Ⅳ所示的化合物选自下述式Ⅳ-1~Ⅳ-3所示的化合物组成的组:
其中,
R5、R6表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、或者、氟取代的碳原子数为2~10的链烯基。
本公开的液晶组合物,优选地,前述液晶组合物还包含一种或多种除所述式Ⅰ所示化合物之外的式Ⅴ所示化合物:
其中,
R7、R8各自独立地表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、或者、氟取代的碳原子数为2~10的链烯基;
通过在本公开的液晶组合物中含有式Ⅴ所示化合物,能够增大液晶组合物的光学各向异性和提高液晶组合物的清亮点,有利于提升液晶组合物的响应速度。
本公开的液晶组合物中,优选地,前述除式Ⅰ所示化合物之外的式Ⅴ所示的化合物选自下述式Ⅴ-1~Ⅴ-3所示的化合物组成的组:
其中,
R7、R8各自独立地表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、或者、氟取代的碳原子数为2~10的链烯基。
本公开的液晶组合物中,优选还包含一种或多种式Ⅵ所示化合物:
其中,
R9表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基,这些基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代;
作为前述亚环戊基、亚环丁基,可以列举出例如,1,2-亚环戊基,1,3-亚环戊基,1,2-亚环丁基,1,3-亚环丁基;
R10表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、或者、氟取代的碳原子数为1~10的烷氧基。
通过在本公开的液晶组合物中含有前述的式Ⅵ所示化合物,能够使液晶组合物具有较大的负的介电各向异性,有利于降低器件的驱动电压。
本公开的液晶组合物,优选地,前述式Ⅵ所示的化合物选自下述式Ⅵ-1~Ⅵ-6所示的化合物组成的组:
其中,R91、R101表示碳原子数为1~10的烷基。
本公开的液晶组合物中,式Ⅰ所示化合物在液晶组合物中的添加量(质量比)为1-15%,优选为3-11%;式Ⅱ所示化合物在液晶组合物中的添加量(质量比)为1-30%,优选为8-20%;式Ⅲ所示化合物在液晶组合物中的添加量(质量比)为0-50%,优选为20-40%;式Ⅳ所示化合物在液晶组合物中的添加量(质量比)为0-60%,优选为35-50%;式Ⅴ所示化合物在液晶组合物中的添加量(质量比)为0-35%,优选为12-25%;式Ⅵ所示化合物在液晶组合物中的添加量(质量比)为0-10%。
本公开的液晶组合物中,可选的,还可以加入各种功能的掺杂剂,在含有掺杂剂的情况下,掺杂剂的含量优选在液晶组合物中所占的质量百分比为0.01~1.5%,这些掺杂剂可以列举出例如抗氧化剂、紫外线吸收剂、手性剂。
抗氧化剂可以列举出,
t表示1~10的整数;
手性剂可以列举出,
R表示碳原子数为1-10的烷基;
光稳定剂可以列举出,
Z0表示碳数为1~20的亚烷基,所述亚烷基中任意的一个或多个氢任选被卤素取代,任意的一个或多个不相邻-CH2-任选被-O-取代;
紫外线吸收剂可以列举出,
R01表示碳原子数为1-10的烷基。
[液晶显示元件或液晶显示器]
本公开还涉及包含上述任意一种液晶组合物的液晶显示元件或液晶显示器;所述显示元件或显示器为有源矩阵显示元件或显示器或无源矩阵显示元件或显示器。
可选的,所述液晶显示元件或液晶显示器优选有源矩阵液晶显示元件或液晶显示器。
可选的,所述有源矩阵显示元件或显示器为IPS-TFT、FFS-TFT、VA-TFT液晶显示元件或显示器。
包含前述的化合物或液晶组合物的液晶显示元件或液晶显示器,具有低的驱动电压、高的电压保持率、快速的响应速度。
实施例
为了更清楚地说明本公开,下面结合优选实施例对本公开做进一步的说明。本领域技术人员应当理解,下面所具体描述的内容是说明性的而非限制性的,不应以此限制本公开的保护范围。
本说明书中,如无特殊说明,百分比均是指质量百分比,温度为摄氏度(℃),其他符号的具体意义及测试条件如下:
Cp表示液晶清亮点(℃),DSC定量法测试;
Δn表示光学各向异性,no为寻常光的折射率,ne为非寻常光的折射率,测试条件为25±2℃,589nm,阿贝折射仪测试;
Δε表示介电各向异性,Δε=ε∥-ε⊥,其中,ε∥为平行于分子轴的介电常数,ε⊥为垂直于分子轴的介电常数,测试条件为25±0.5℃,20微米垂直盒,INSTEC:ALCT-IR1测试;
γ1表示旋转粘度(mPa·s),测试条件为25±0.5℃,20微米垂直盒,INSTEC:ALCT-IR1测试;
K11为扭曲弹性常数,K33为展曲弹性常数,测试条件为:25℃、INSTEC:ALCT-IR1、20微米垂直盒;
液晶组合物的制备方法如下:将各液晶单体按照一定配比称量后放入不锈钢烧杯中,将装有各液晶单体的不锈钢烧杯置于磁力搅拌仪器上加热融化,待不锈钢烧杯中的液晶单体大部份融化后,往不锈钢烧杯中加入磁力转子,将混合物搅拌均匀,冷却到室温后即得液晶组合物。
本公开实施例液晶单体结构用代码表示,液晶环结构、端基、连接基团的代码表示方法见下表1、表2。
表1环结构的对应代码
表2端基与链接基团的对应代码
举例:
实施例1
液晶组合物的配方及相应的性能如下表3所示。
表3实施例1液晶组合物的配方及相应的性能
实施例2
液晶组合物的配方及相应的性能如下表4所示。
表4实施例2液晶组合物的配方及相应的性能
实施例3
液晶组合物的配方及相应的性能如下表5所示。
表5实施例3液晶组合物的配方及相应的性能
实施例4
液晶组合物的配方及相应的性能如下表6所示。
表6实施例4液晶组合物的配方及相应的性能
对比例1
液晶组合物的配方及相应的性能如下表7所示。
表7对比例1液晶组合物的配方及相应的性能
将实施例4中的Sc-CpO-O4、Sc-CpO-O2分别替换为PY-2O-O2、PY-3-O2,其余与实施例4相同,作为对比例1。与对比例1相比,实施例4的液晶组合物的具有大的介电各向异性(Δε)、高的清亮点(Cp),可以用于开发大介电宽温显示的液晶显示器。
表8实施例与对比例的信赖性数据
液晶组合物的信赖性通过紫外、高温老化试验并进行VHR测试来进行。
液晶组合物紫外、高温试验前后的VHR数据变化越小,抗紫外、抗高温能力越强。因此,通过比较各个实施例、比较例在试验前后的VHR数据的差来判断抗紫外、抗高温能力。
首先,在进行紫外、高温老化试验之前,测定液晶组合物的VHR数据作为初始VHR数据,然后,对液晶组合物进行紫外、高温老化试验,在试验后再次测定液晶组合物的VHR数据。
紫外老化试验:将液晶组合物放置在波长为365nm的紫外灯下照射5000mJ能量。
高温老化试验:将液晶组合物放置在100℃烘箱内一小时。
在老化试验后VHR数据相对于初始VHR数据变化越小,说明该液晶组合物抗紫外、抗高温的能力越强,从而可以判断该液晶组合物在工作过程中抵抗外界环境破坏的能力越强,因此,该液晶组合物的信赖性就越高。
另外,将实施例4、对比例1液晶组合物灌注入液晶测试盒,进行残像测试,测试结果一并示于上述的表8中。
由表8可以看出,本发明的液晶组合物的抗UV、抗高温性能是非常明显的。由此说明,本发明的液晶组合物具有良好的抗UV、抗高温的性能。
实施例5
液晶组合物的配方及相应的性能如下表9所示。
表9实施例5液晶组合物的配方及相应的性能
实施例6
液晶组合物的配方及相应的性能如下表10所示。
表10实施例6液晶组合物的配方及相应的性能
实施例7
液晶组合物的配方及相应的性能如下表11所示。
表11实施例7液晶组合物的配方及相应的性能
实施例8
液晶组合物的配方及相应的性能如下表12所示。
表12实施例8液晶组合物的配方及相应的性能
实施例9
液晶组合物的配方及相应的性能如下表13所示。
表13实施例9液晶组合物的配方及相应的性能
显然,本公开的上述实施例仅仅是为清楚地说明本公开所作的举例,而并非是对本公开的实施方式的限定,对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动,这里无法对所有的实施方式予以穷举,凡是属于本公开的技术方案所引伸出的显而易见的变化或变动仍处于本公开的保护范围之列。
Claims (10)
2.根据权利要求1所述的液晶组合物,其特征在于,所述液晶组合物还包含一种或多种式Ⅲ所示化合物,
式Ⅲ中,R3、R4各自独立地表示碳原子数为1~10的烷基、氟取代的碳原子数为1~10的烷基、碳原子数为1~10的烷氧基、氟取代的碳原子数为1~10的烷氧基、碳原子数为2~10的链烯基、氟取代的碳原子数为2~10的链烯基、碳原子数为3~8的链烯氧基、或者、氟取代的碳原子数为3~8的链烯氧基;
R3、R4所示基团中任意一个或多个不相连的-CH2-任选被亚环戊基、亚环丁基或亚环丙基取代;
Z1、Z2各自独立地表示单键、-CH2CH2-、-OCH2-或-CH2O-;
m表示0或1;n表示0、1或2。
10.一种液晶显示元件或液晶显示器,其特征在于,包含权利要求1~9的任一项所述的液晶组合物,所述液晶显示元件或液晶显示器为有源矩阵寻址显示元件或显示器,或者无源矩阵寻址显示元件或显示器。
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