WO2015066833A1 - 一种液晶组合物及其应用 - Google Patents

一种液晶组合物及其应用 Download PDF

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WO2015066833A1
WO2015066833A1 PCT/CN2013/001396 CN2013001396W WO2015066833A1 WO 2015066833 A1 WO2015066833 A1 WO 2015066833A1 CN 2013001396 W CN2013001396 W CN 2013001396W WO 2015066833 A1 WO2015066833 A1 WO 2015066833A1
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formula
liquid crystal
crystal composition
component
definition
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PCT/CN2013/001396
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English (en)
French (fr)
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员国良
乔云霞
华瑞茂
张兴
李明
王瑾
段雅杰
崔红梅
李雅敏
丰景义
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石家庄诚志永华显示材料有限公司
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Priority to US15/035,203 priority Critical patent/US10040998B2/en
Publication of WO2015066833A1 publication Critical patent/WO2015066833A1/zh

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    • 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
    • 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
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
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    • C09K2019/0466Liquid 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 linking chain being a -CF2O- chain
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    • C09K2019/3071Cy-Cy-COO-Cy
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Definitions

  • the present invention relates to a liquid crystal composition and its use.
  • liquid crystal compounds At present, the application range of liquid crystal compounds is expanding wider and wider, and it can be applied to various types of displays, electro-optical devices, sensors, and the like.
  • a wide variety of liquid crystal compounds are used in the above display field, and nematic liquid crystals are most widely used.
  • Nematic liquid crystals have been used in passive TN, STN matrix displays and systems with TFT active matrices.
  • TFT-LCD thin film transistor technology
  • LCD thin film transistor technology
  • the requirements for display technology are also constantly improving, especially in achieving fast response and lowering the driving voltage to reduce Power consumption and other aspects.
  • liquid crystal materials play an important role in improving the performance of liquid crystal displays.
  • liquid crystal material As a liquid crystal material, it is required to have good chemical and thermal stability as well as stability against electric fields and electromagnetic radiation.
  • liquid crystal material for thin film transistor technology TFT-LCD
  • TFT-LCD thin film transistor technology
  • the liquid crystal is required to have a fast response speed, so the liquid crystal is required to have a low rotational viscosity Y 1 ; in addition, in order to reduce the power consumption of the device, it is desirable to drive the driving voltage of the liquid crystal. May be low.
  • Contrast is actually the ratio of brightness.
  • the definition is: In the dark room, the brightness under the white picture (the brightest time) is divided by the black picture (most The brightness under dark time;). More precisely, contrast is the subtraction of the white signal at 100% and 0% saturation, divided by the white value of 0% (in illuminance, ie lux, lumens per square meter). The 0% white signal is actually black), the value obtained. Contrast is the division of the blackest and whitest brightness units. Therefore, the brighter the white, the darker the black, the higher the contrast. Contrast is an important parameter of liquid crystal displays. At a reasonable brightness value, the higher the contrast, the richer the color level that can be displayed.
  • the liquid crystal composition provided by the present invention comprises component &, component b and component c;
  • component a is selected from at least one of the compounds of formula I;
  • component b is a liquid crystal compound having a dielectric anisotropy greater than 3;
  • Ro is selected from the group consisting of H atom, C1-C10 alkyl group, fluorine-substituted C1-C10 alkyl group, C1-C10 alkoxy group, fluorine-substituted C1-C10 alkoxy group, C2- Alkenyl C10, fluoro substituted C2-C10 alkenyl, C3-C8 alkenyloxy, fluoro-substituted C3-C8 alkenyloxy, cyclopentyl, cyclobutyl, cyclohexyl and cyclic Any of the heptyl groups;
  • Ri is selected from the group consisting of a, b or c:
  • a selected from the group consisting of H, Cl, F, -CN -OCN -OCF 3 , -CF 3 , -CHF 2 , -CH 2 F, -OCHF 2 , -SCN -NCS -SF 5 , C1-C15 Any one of a C1-C15 alkoxy group, a C2-C15 alkenyl group or a C2-C15 alkenyloxy group;
  • ⁇ ⁇ 2 is the same or different and is selected from any one of a halogen atom and a fluorine atom;
  • Both a and b are selected from integers from 0 to 3;
  • c is 1 or 2, and a+b+c ⁇ 5.
  • the above liquid crystal composition may also consist of only component a, component b and component c.
  • the mass ratio of the component &, component b and component c is 10-70: 2-70: 5-70, specifically 10-69: 2-70: 5-70, 15-39: 15-61: 10-48, 20-35: 23-59: 21-41 or 30-69: 35-61: 34-50; in the above formula I,
  • the alkyl group of C1-C10 is specifically selected from the group consisting of a C2-C10 alkyl group, a C3-C10 alkyl group,
  • the C1-C10 alkoxy group is specifically selected from the group consisting of a C2-C10 alkoxy group, a C3-C10 alkoxy group, a C4-C10 alkoxy group, a C5-C10 alkoxy group, and a C6-C10 alkoxy group.
  • a C1-C6 alkoxy group a C2-C6 alkoxy group, a C3-C6 alkoxy group, a C4-C6 alkoxy group, a C5-C6 alkoxy group, a C1-C5 alkoxy group, a C2-C5 alkoxy group, a C3-C5 alkoxy group, a C4-C5 alkoxy group, a C1-C4 alkoxy group, a C2-C4 alkoxy group,
  • the C2-C10 alkenyl group is specifically selected from the group consisting of a C2-C6 alkenyl group, a C3-C6 alkenyl group, a C4-C6 alkenyl group, a C5-C6 alkenyl group, and a C3-C5 alkene group. a group of at least one of a C4-C5 alkenyl group, a C3-C4 alkenyl group, a C3-C10 alkenyl group, a C2-C8 alkenyl group, and a C2-C3 alkenyl group;
  • the alkenyloxy group of C3-C8 is specifically selected from the group consisting of an alkenyloxy group of C3-C6, an alkenyloxy group of C4-C6, an alkenyloxy group of C5-C6, an alkenyloxy group of C3-C5, C4 At least one of an alkenyloxy group of C5, an alkenyloxy group of C3-C4, and an alkenyloxy group of an alkenyloxy group of C3-C8;
  • e is an integer from 0-3;
  • the compound represented by the formula II is specifically any of the compounds represented by the following formulas ⁇ -1 to 11-13
  • liquid crystal composition further contains at least at least one of the compounds of the formula IV-form V
  • f, g, h, and i are all integers 0-3.
  • the mass ratio of the compound represented by the formula IV and the formula V is 0-30: 0-40, specifically 3-4: 3-10, 3-4: 4-9, 3-4: 5-10;
  • the mass ratio of the compound of the formula IV to the compound of the formula III is 0-30: 5-70, specifically 3-4: 5-70, 3-4: 12-61, 3-4: 23 -56, 3-4: 35-48 or 3-4: 15-59; and the compounds of the formula IV and the formula V are not of a mass of 0.
  • - (F) means -F or -H.
  • the liquid crystal composition may also be composed of the compound of the formula I-form V; Specifically, it is composed of a compound represented by Formula I to Formula V having a mass ratio of 10-70: 10-70: 5-70: 0-30: 0-40; and the mass of the compound represented by Formula IV and Formula V is Not 0;
  • the mass ratio is 10-69: 2-70: 5-70: 3-4: 3-10, 15-39: 15-61: 10-48: 3-4: 3-10, 20-35 : 23-59: 21-41: 3-4: 3-10 or 30-69: 35-61: 34-50: 3-4: 3-10 of the compound of formula I to formula V;
  • the liquid crystal composition further comprises a chiral agent
  • the mass of the chiral agent is 0-1%, specifically 0.13 to 0.51%, based on the total weight of the compound of the formula I-form V, and the mass of the chiral agent is not zero.
  • the liquid crystal composition is specifically any one of liquid crystal compositions a-w:
  • composition consists of the following parts by mass:
  • the liquid crystal composition d includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition e specifically includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition g includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition i specifically includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition q includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition s includes the following parts by mass or consists of the following parts by mass:
  • the liquid crystal composition w includes the following parts by mass or consists of the following parts by mass:
  • a liquid crystal display element or a liquid crystal display comprising the composition provided by the present invention is also within the scope of the present invention; wherein the display element or display is an active matrix display element or a display or a passive matrix display element or display;
  • the active matrix display element or display is specifically a TN-TFT or IPS-TFT liquid crystal display element or display.
  • the liquid crystal composition of the present invention can be produced by mixing two or more liquid crystal compounds by a conventional method, such as a method of mixing different components at a high temperature and dissolving each other, wherein a liquid crystal composition is dissolved in the compound for use in the compound.
  • the solvent is mixed and mixed, and then the solvent is distilled off under reduced pressure; or the liquid crystal composition of the present invention can be produced according to a conventional production method.
  • the invention is further illustrated by the following specific examples, but the following examples are examples of the invention, and the invention is not limited to the following examples.
  • the liquid crystal composition having different threshold values, clearing points, and birefringence characteristics can be modified or improved by adjusting the content of each component in the liquid crystal composition of the present invention without departing from the gist or scope of the present invention. And better contrast applied to display panels, as will be apparent to those skilled in the art.
  • the method is a conventional method unless otherwise specified.
  • the components used in the following examples can be synthesized by a known method or obtained commercially. These synthetic techniques are conventional, and each of the obtained liquid crystal compounds has been tested to meet the standards of electronic compounds.
  • a liquid crystal composition was prepared in accordance with the ratio of each liquid crystal composition specified in the following examples.
  • the preparation of the liquid crystal composition is carried out in accordance with a conventional method in the art, such as heating, ultrasonication, suspension, etc., in a prescribed ratio.
  • the liquid crystal composition given in the following examples was prepared and studied. At the same time, it was filled in the performance test between the two substrates of the liquid crystal display. The composition of each liquid crystal composition and the test results of its performance parameters are shown below.
  • Cp ( °C ) indicates the clearing point of the liquid crystal.
  • optical anisotropy
  • no is the refractive index of ordinary light
  • ne is the refractive index of extraordinary light.
  • the test conditions are 589 nm, 25 °C.
  • ⁇ ⁇ is the dielectric anisotropy
  • As s / / - s ⁇
  • ⁇ / / is the dielectric constant parallel to the molecular axis
  • ⁇ ⁇ is the dielectric constant perpendicular to the molecular axis
  • the test condition is 25 ° C; ⁇ ; HP4284A; 4.0 micron TN left-handed box.
  • V 10 is the optical threshold voltage [v] of the liquid crystal
  • V 9Q is the saturation voltage value [v] of the liquid crystal
  • the test condition is a 4.0 micron TN left-handed box at 25 °C.
  • Contrast change rate Cr% is calculated as: (contrast at room temperature 25 V - low temperature at -20 °C) / normal temperature at 25 °C *100%.
  • the contrast change rate measured in the following examples was calculated at a normal temperature of 25 ° C and a low temperature of -20 ° C, but not limited to this temperature, and the temperature range from 60 ° C to -40 ° C is covered by this patent. Within the scope. Tester Are all DMS501,
  • the liquid crystal composition as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 2
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 3
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 4
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 5
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 6
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • liquid crystal composition g provided by the present invention:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Comparative example 4 Replaced with 6 quality
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 9
  • liquid crystal composition i provided by the present invention:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Comparative example obtaining a liquid crystal composition
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 10
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 11
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 12
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 13
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 14
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for an IPS mode display.
  • Example 15
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for an IPS mode display.
  • Example 16
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for an IPS mode display.
  • Example 17
  • liquid crystal composition q provided by the present invention:
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for an IPS mode display.
  • Example 18
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, and a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 19
  • composition The properties of the composition are as follows ⁇ : 0.110; Cp [°C] : 90 °C;
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 20
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • Example 21
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 22
  • liquid crystal composition V of the present invention The components are mixed according to the following parts by weight to obtain the liquid crystal composition V of the present invention:
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • Example 23
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a favorable refractive index, a moderately large dielectric constant, a good normal temperature and low temperature contrast change rate (i.e., a small change rate), and is very suitable for a TN mode display.
  • composition The properties of the composition are as follows:
  • the liquid crystal composition has a poor rate of change in the normal temperature and low temperature contrast (i.e., a large rate of change), and therefore has no advantage in a TN mode display which requires a high contrast change rate.
  • the liquid crystal composition provided by the present invention has high contrast performance, especially at a low temperature, that is, a lower contrast ratio at a low temperature (e.g., -20 ° C) and a normal temperature. At the same time, it has suitable properties for practical applications, such as wide nematic phase range, proper dielectric anisotropy ( ⁇ ⁇ ) and optical anisotropy ( ⁇ ⁇ ) and operating voltage, excellent response time, high resistivity. And voltage retention, low rotational viscosity, etc.
  • the nematic liquid crystal composition provided by the present invention can have different threshold voltages and birefringence characteristics, and can be made into various systems commonly used by customers, which are convenient for different liquid crystal cell thicknesses and different driving. Use under voltage. Rights request
  • a liquid crystal composition comprising a component &, a component b and a component c;
  • component a is selected from at least one of the compounds of formula I;
  • the component b is a liquid crystal compound having a dielectric anisotropy greater than 3;
  • Ro is selected from the group consisting of H atom, C1-C10 alkyl group, fluorine-substituted C1-C10 alkyl group, C1-C10 alkoxy group, fluorine-substituted C1-C10 alkoxy group, C2- Alkenyl C10, fluoro substituted C2-C10 alkenyl, C3-C8 alkenyloxy, fluoro-substituted C3-C8 alkenyloxy, cyclopentyl, cyclobutyl, cyclohexyl and cyclic Any of the heptyl groups;
  • Ri is selected from the group consisting of a, b or c:
  • a selected from the group consisting of H, Cl, F, -CN -OCN -OCF 3 , -CF 3 , -CHF 2 , -CH 2 F, -OCHF 2 , -SCN -NCS -SF 5 , C1-C15 Any one of a C1-C15 alkoxy group, a C2-C15 alkenyl group or a C2-C15 alkenyloxy group;
  • ⁇ ⁇ 2 is the same or different and is selected from any one of a halogen atom and a fluorine atom;

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Abstract

本发明公开了一种液晶组合物及其应用。该液晶组合物,包含组分a、组分b和组分c;其中,所述组分a选自式I所示化合物中的至少一种;所述组分b为介电各向异性大于3的液晶化合物;所述组分c为介电各向异性为-3至3的液晶化合物。该液晶组合物具有高的对比度性能,尤其是在低温下具有低的变化率,亦即在低温下(比如-20°C下)和常温下相比,对比度下降较小。同时具有对于实际应用合适的性能,如宽的向列相范围,适当的介电各向异性(Δε)和光学各向异性(Δn)和操作电压,优异的响应时间,高的电阻率及电压保持率,低的旋转粘度等。

Description

一种液晶组合物及其应用 技术领域
本发明涉及一种液晶组合物及其应用。
背景技术
目前,液晶化合物的应用范围拓展的越来越广,其可应用于多种类型的显示器、 电光器件、 传感器等中。 用于上述显示领域的液晶化合物的种类繁多, 其中向列相 液晶应用最为广泛。 向列相液晶已经应用在无源 TN、 STN矩阵显示器和具有 TFT 有源矩阵的系统中。
对于薄膜晶体管技术 (TFT-LCD) 应用领域, 近年来市场虽然已经非常巨大, 技术也逐渐成熟, 但人们对显示技术的要求也在不断的提高, 尤其是在实现快速响 应, 降低驱动电压以降低功耗等方面。 液晶材料作为液晶显示器重要的光电子材料 之一, 对改善液晶显示器的性能发挥重要的作用。
作为液晶材料,需要具有良好的化学和热稳定性以及对电场和电磁辐射的稳定 性。而作为薄膜晶体管技术(TFT-LCD)用液晶材料,不仅需要具有如上稳定性外, 还应具有较宽的向列相温度范围、 合适的双折射率各向异性、 非常高的电阻率、 良 好的抗紫外线性能、 高电荷保持率以及低蒸汽压等性能。
对于动态画面显示应用, 消除显示画面残影和拖尾, 要求液晶具有很快的响应 速度, 因此要求液晶具有较低的旋转粘度 Y 1 ; 另外, 为了降低设备能耗, 希望液 晶的驱动电压尽可能低。
为了实现高品质显示, 高对比度是液晶显示器的另一个重要性能参数,对比度 实际上就是亮度的比值, 定义是: 在暗室中, 白色画面 (最亮时;)下的亮度除以黑色 画面 (最暗时;)下的亮度。 更精准地说, 对比度就是把白色信号在 100%和 0%的饱和 度相减, 再除以用 Lux (光照度, 即勒克斯, 每平方米的流明值)为计量单位下 0%的 白色值 (0%的白色信号实际上就是黑色), 所得到的数值。 对比度是最黑与最白亮度 单位的相除值。 因此白色越亮、 黑色越暗, 对比度就越高。 对比度是液晶显示器的 一个重要参数, 在合理的亮度值下, 对比度越高, 其所能显示的色彩层次越丰富。
对于这些显示器, 需要具有改进性能的新型液晶组合物。高对比度是这类混合 物必须具有的性能。 同时, 这类混合物还应具有适当的介电各向异性 (Δε) 和光 学各向异性 (Δ η) 和阈值电压。
因此, 需要具有对于实际应用合适的性能, 如宽的向列相范围, 适当的介电各 向异性 (Δε) 和光学各向异性 (Δ η) 和操作电压, 低的旋转粘度, 同时具有高的 对比度性能, 尤其是对比度在低温下具有低的变化率的新型液晶组合物。
发明公开
本发明的目的是提供一种液晶组合物及其应用。
本发明提供的液晶组合物, 包含组分&、 组分 b和组分 c;
其中, 所述组分 a选自式 I所示化合物中的至少一种; 所述组分 b 为介电各向异性大于 3的液晶化合物;
所述组分 c
Figure imgf000004_0001
式 I
所述式 I中, Ro选自 H原子、 C1-C10的烷基、氟取代的 C1-C10的烷基、 C1-C10 的烷氧基、 氟取代的 C1-C10的烷氧基、 C2-C10的链烯基、 氟取代的 C2-C10的链 烯基、 C3-C8的链烯氧基、 氟取代的 C3-C8的链烯氧基、 环戊基、 环丁基、 环己基 和环庚基中的任意一种;
Ri选自如下基团 a、 b或 c:
a、选自 H、 Cl、 F、 -CN -OCN -OCF3、 -CF3、 -CHF2、 -CH2F、 -OCHF2、 -SCN -NCS -SF5、 C1-C15的焼基、 C1-C15的烷氧基、 C2-C15的烯基或 C2-C15的烯氧 基中的任意一种;
b、将所述基团 a中至少一个 -CH2-被如下基团中至少一种取代且氧原子不直接 相连而得的基团: -CH=CH -、 -C≡C -、 -COO-、 -OOC -、环丁基、环戊基、 -0-和 -S-; c、 将所述基团 a中至少一个氢被氟或氯取代而得的基团;
Χ^Β Χ2相同或不同, 均选自 Η原子和氟原子中的任意一种;
Ζ^Ρ Ζ2相同或不同, 均选自单键、 -CH2-CH2-、 -(CH2)4-、 -CH=CH -、 -C≡C -、 -C00-、 -OOC -、 -CF20-、 -0CH2-、 -CH20-、 -0CF2-、 -CF2CH2-、 -CH2CF2-、 -C2F4- 和 -CF = CF-中的至少一种;
Figure imgf000004_0002
a和 b均选自 0-3的整数;
c为 1或 2, 且 a+b+c≤5。
上述液晶组合物也可只由组分 a、 组分 b和组分 c组成。
所述组分&、 组分 b和组分 c的质量比为 10-70 : 2-70: 5-70, 具体为 10-69: 2-70: 5-70、 15-39: 15-61: 10-48、 20-35: 23-59: 21-41或 30-69: 35-61: 34-50; 上述式 I中, 所述 C1-C10的烷基具体选自 C2-C10的烷基、 C3-C10的烷基、
C4-C10的烷基、 C5-C10的烷基、 C6-C10的烷基、 C1-C6的烷基、 C2-C6的烷基、
C3-C6的烷基、 C4-C6的烷基、 C5-C6的烷基、 C1-C5的烷基、 C2-C5的烷基、 C3-C5 的烷基、 C4-C5的烷基、 C1-C4的烷基、 C2-C4的烷基、 C3-C4的烷基、 C1-C3的 烷基、 C1-C2的烷基和 C2-C3的烷基中的至少一种;
所述 C1-C10的烷氧基具体选自 C2-C10的烷氧基、 C3-C10的烷氧基、 C4-C10 的烷氧基、 C5-C10的烷氧基、 C6-C10的烷氧基、 C1-C6的烷氧基、 C2-C6的烷氧 基、 C3-C6的烷氧基、 C4-C6的烷氧基、 C5-C6的烷氧基、 C1-C5的烷氧基、 C2-C5 的烷氧基、 C3-C5的烷氧基、 C4-C5的烷氧基、 C1-C4的烷氧基、 C2-C4的烷氧基、
C3-C4的烷氧基、 C1-C3的烷氧基、 C1-C2的烷氧基和 C2-C3的烷氧基中的至少一 种;
所述 C2-C10的链烯基具体选自 C2-C6的链烯基、 C3-C6的链烯基、 C4-C6的 链烯基、 C5-C6的链烯基、 C3-C5的链烯基、 C4-C5的链烯基、 C3-C4的链烯基、 C3-C10的链烯基、 C2-C8的链烯基和 C2-C3的链烯基中的至少一种;
所述 C3-C8的链烯氧基具体选自 C3-C6的链烯氧基、 C4-C6的链烯氧基、 C5-C6 的链烯氧基、 C3-C5的链烯氧基、 C4-C5的链烯氧基、 C3-C4的链烯氧基和 C3-C8 的链烯氧基的链烯氧基中的至少一种;
Figure imgf000005_0001
Figure imgf000006_0001
CT00/C10ZN3/X3d
Figure imgf000007_0001
96CT00/C10ZN3/X3d CC8990/ST0Z OAV
Figure imgf000008_0001
I -36
Figure imgf000009_0001
所述式 11-137中, 的定义与式 1中《 的定义相同; -CF)表示 -F或 -H; 所述组分
Figure imgf000009_0002
所述式 II中, 的定义与 Ro相同;
和 \ 的定义与 相同;
X3和 的定义与 相同;
X4的定义与《 相同;
e为 0-3的整数;
所述式 II所示化合物具体为如下式 Π-1至式 11-13所示化合物中的任意
Figure imgf000009_0003
7
Figure imgf000010_0001
所述式 II-l至式 11-13中, 和 X4的定义分别与所述式 II中 和 X4的定义 相同;
-(F)表示 -F或 -H; 所述组分 c选自式 III
Figure imgf000010_0002
式 III
所述式 III中, R2、 R3的定义与式 I中 Ro的定义相同;
Figure imgf000011_0001
Figure imgf000011_0002
所述式 III-l至 111-10中, R2和 R3的定义均与式 I中 Ro的定义相同;
-(F)表示 -F或 -H。 所述液晶组合物中还含有式 IV-式 V所示化合物中的至少
Figure imgf000011_0003
式 V
所述式 IV-式 V中, R5和 的定义与式 I中 RQ的定义相同;
Figure imgf000012_0001
Z3选自 -CH2-CH2-、 -CH=CH-、 -C≡C-、 -COO-、 -OOC-、 -OCH2-、 -CH20-、 -CF2CH2- -CH2CF2-、 -C2F4-和 -CF = CF-中的至少一种;
X6的定义与式 I中 Xi的定义相同;
Xy的定义与式 I中 X4的定义相同;
f、 g、 h、 i均为 0-3的整数。
所述式 IV和式 V所示化合物的质量比为 0-30: 0-40, 具体为 3-4: 3-10、 3-4: 4-9、 3-4: 5-10;
所述式 IV所示化合物与所述式 III所示化合物的质量比为 0-30: 5-70, 具体为 3-4:5-70、 3-4: 12-61、 3-4: 23-56、 3-4: 35-48或 3-4: 15-59; 且所述式 IV和式 V 所示化合物的质量均不为 0。
的任意一种:
Figure imgf000012_0002
所述式 IV-1至 IV-5中, R5和 的定义均与式 I中 Ro的定义相同; -(F)表示 -F或 -H;
Figure imgf000012_0003
Figure imgf000013_0001
Ry的定义与式 I中 Ri的定义相同;
-(F)表示 -F或 -H。
所述液晶组合物也可由所述式 I-式 V所示化合物组成; 具体为由质量比为 10-70: 10-70: 5-70: 0-30: 0-40的式 I至式 V所示化合物 组成; 且所述式 IV和式 V所示化合物的质量均不为 0;
更具体为由质量比为 10-69: 2-70: 5-70: 3-4: 3-10、 15-39: 15-61: 10-48: 3-4: 3-10、 20-35: 23-59: 21-41: 3-4: 3-10或 30-69: 35-61: 34-50: 3-4: 3-10的 式 I至式 V所示化合物组成;
所述液晶组合物中还包含手性剂;
Figure imgf000014_0001
所述手性剂的质量为所述式 I-式 V所示化合物总重的 0-1%,具体为 0.13-0.51%, 且所述手性剂的质量不为 0。
所述液晶组合物具体为液晶组合物 a-w中的任意一种:
组分组成:
Figure imgf000014_0002
Figure imgf000015_0001

Figure imgf000016_0001
所述 由如下各质量份的组分组成:
Figure imgf000016_0002
Figure imgf000017_0001

Figure imgf000018_0001

Figure imgf000019_0001
所述液晶组合物 d包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000019_0002
Figure imgf000020_0001
Figure imgf000021_0001
所述液晶组合物 e具体包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000021_0002
Figure imgf000022_0001
Figure imgf000023_0001
Figure imgf000024_0001
所述液晶组合物 g包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000024_0002
Figure imgf000025_0001
Figure imgf000026_0001

Figure imgf000027_0001
 所述 成:
Figure imgf000028_0001
所述液晶组合物 i具体包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000028_0002
Figure imgf000029_0001

Figure imgf000030_0001
Figure imgf000031_0001

Figure imgf000032_0001
30
Figure imgf000033_0001
31
Figure imgf000034_0001
Figure imgf000035_0001
33
Figure imgf000036_0001

Figure imgf000037_0001
Figure imgf000038_0001

Figure imgf000039_0001

Figure imgf000040_0001
所述液晶组合物 q包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000041_0001
Figure imgf000042_0001
40 所 组分组成:
Figure imgf000043_0001
所述液晶组合物 s包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000044_0001
42
Figure imgf000045_0001
43
Figure imgf000046_0001
44
Figure imgf000047_0001
Figure imgf000048_0001

Figure imgf000049_0001
所述液晶组合物 w包括如下各质量份的组分或由如下各质量份的组分组成:
Figure imgf000050_0001
Figure imgf000050_0002
另外,包含上述本发明提供的组合物的液晶显示元件或液晶显示器也属于本发 明的保护范围; 其中, 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;所述有源矩阵显示元件或显示器具体为 TN-TFT或 IPS-TFT 液晶显示元件或显示器。
本发明的液晶组合物可采用常规方法将两种或多种液晶化合物混合进行生产, 如在高温下混合不同组分并彼此溶解的方法制备, 其中, 将液晶组合物溶解在用于 该化合物的溶剂中并混合, 然后在减压下蒸熘出该溶剂; 或者本发明的液晶组合物 可按照常规的制备方法制备。
实施发明的最佳方式
实施例 1、
下面结合具体实施例对本发明作进一步阐述,但下面的实施例为本发明的示例, 本发明并不限于以下实施例。 在不偏离本发明主旨或范围的情况下, 通过在本发明 的液晶组合物内还可以通过对各组分含量的调整, 修改或改良出具有不同阈值, 清 亮点, 双折射特性的液晶组合物, 以及应用于显示面板更优的对比度, 这对本领域 技术人员是显而易见的。 所述方法如无特别说明均为常规方法。
在以下的实施例中所采用的各成分,均可以通过公知的方法进行合成, 或者通 过商业途径获得。 这些合成技术是常规的, 所得到的各液晶化合物经测试符合电子 类化合物标准。
按照以下实施例规定的各液晶组合物的配比, 制备液晶组合物。所述液晶组合 物的制备是按照本领域的常规方法进行的, 如采取加热, 超声波, 悬浮等方式按照 规定比例混合制得。
制备并研究下列实施例中给出的液晶组合物。同时将其填充于液晶显示器两基 板间进行性能测试, 下面显示了各液晶组合物的组成和其性能参数测试结果。
本发明中的百分比为重量百分比, 温度为摄氏度 (°C)。 如无其他说明, 其他符 号的具体意义及测试条件如下:
Cp ( °C ) 表示液晶的清亮点。
Δη为光学各向异性, no为寻常光的折射率, ne为非寻常光的折射率, 测试 条件为, 589nm, 25°C。
△ε为介电各向异性, As=s//-s丄,其中, ε//为平行于分子轴的介电常数, ε丄 为垂直于分子轴的介电常数, 测试条件为 25°C ; ΙΚΗζ; HP4284A; 4.0微米 TN左 旋盒。
V10为液晶的光学阈值电压 [v], V9Q为液晶的饱和电压值 [v], 测试条件为 4.0 微米 TN左旋盒, 25°C。
对比度变化率 Cr%的计算方法为: (常温 25 V的对比度 -低温 -20°C的对比度 )/ 常温 25°C的对比度 *100%。
下述实施例所测对比度变化率均以常温 25°C、 低温 -20°C温度下的对比度进行 计算, 但不限此温度, 温度范围从 60°C到 -40°C都在本专利涵盖范围之内。 测试仪 器均为 DMS501 ,
下述实施例中所用手性剂均为
Figure imgf000052_0001
实施例 1
按照如下 的液晶组合物 a:
归属式 12
归属式 20
归属式
归属式 13
归属式 16 归属式 13 归属式 11 归属式 归属式
归属式
Figure imgf000052_0002
3; 手性剂 0.18 该组合物的性能如下所示:
Δη: 0.100;
cp [°C] : 95 °C ;
△ε: 10.5;
Vio[v] : 1.43;
Cr%: 8%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000053_0001
该组合物的性能如下所示:
Δη: 0.111;
cp [°C] : 95 °C ;
△ε: 10.3;
Vio[v] : 1.46;
Cr%: 40%。
由上可知, 该液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 2
按照如下重
归属式 111
Figure imgf000053_0002
Figure imgf000054_0001
手性剂 0.13 该组合物的性能如下所示:
Δη: 0.100;
cp [°C]: 97 °C ;
Δε: 10.5;
Vio[v]: 1.43;
Cr%: 12%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000054_0002
Figure imgf000055_0001
Figure imgf000055_0002
,其余组分不变,得到液晶组 合物;
该组合物的性能如下所示:
Δη: 0.110;
cp [°C]: 97 °C ;
△ε: 10.5;
Vio[v]: 1.42;
Cr%: 42%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 3
Figure imgf000055_0003
Figure imgf000056_0001
手性剂 0.25 该组合物的性能如下所示:
Δη: 0.100;
cp [°C]: 95 °C;
△ε: 11.2;
Vio[v]: 1.40;
Cr%: 15/0
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 4
Figure imgf000056_0002
Figure imgf000057_0001
手性剂 0.18 该组合物的性能如下所示:
0.100;
cp [°C]: 91°C;
△ε: 11.2;
Vio[v]: 1.39;
Cr%: 14%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 5
按照如下重
归属式 II
Figure imgf000057_0002
Figure imgf000058_0001
手性剂 0.31 该组合物的性能如下所示:
Δη: 0.110;
cp [°C]: 90 °C ;
△ε: 10.4;
Vio[v]: 1.50;
Cr%: 17%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 对比例 3
Figure imgf000059_0001
该组合物的性能如下所示:
Δη: 0.110;
cp [°C]: 90 °C ;
△ε: 10.4;
Vio[v]: 1.50;
Cr%: 35%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 6
Figure imgf000059_0002
Figure imgf000060_0001
手性剂 0.27 该组合物的性能如下所示:
Δη: 0.110;
cp [°C]: 95 °C ;
△ε: 10.4;
Vio[v]: 1.49;
Cr%: 10%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 Ί
按照如下重量份将各组分混匀, 得到本发明提供的液晶组合物 g:
Figure imgf000061_0001
手性剂 0.28 该组合物的性能如下所示:
Δη: 0.110;
cp [°C]: 90 °C ;
△ε: 10.5;
Vio[v]: 1.49; Cr%: 11%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 8
按照如下重
Figure imgf000062_0001
归属式 ΠΙ-2 归属式 ΠΙ-1
Figure imgf000063_0001
手性剂 0.16 该组合物的性能如下所示:
Δη: 0.100;
cp [°C]: 100°C ;
Δε: 7.7;
Vio[v]: 1.73;
Cr%: 22%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 对比例 4
Figure imgf000063_0002
替换为 6质
Figure imgf000063_0003
份改为 8得到液晶组合物;
该组合物的性能如下所示:
Δη: 0.100;
cp [°C]: 100°C ;
Δε: 7.7;
Vio[v]: 1.73;
Cr%: 50%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 9
按照如下重量份将各组分混匀, 得到本发明提供的液晶组合物 i:
Figure imgf000064_0001
手性剂 0.19 该组合物的性能如下所示:
Δη: 0.095;
cp [°C]: 110°C ;
△ε: 5.6;
Vio[v]: 2.05;
Cr%: 20%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 对比例
Figure imgf000065_0001
, 得到液晶组合物;
该组合物的性能如下所示:
Δη: 0.095;
cp [°C]: 110°C;
△ε: 5.6;
Vio[v]: 2.05;
Cr%: 50%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 10
按照如下重 液晶组合物 j:
Figure imgf000065_0002
归属式
Figure imgf000066_0001
手性剂 0.34 该组合物的性能如下所示:
Δη: 0.089;
cp [°C] : 89 °C ;
△ε: 9.4;
Vio[v] : 1.51;
Cr%: 19%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 对比例 6
将实施例 10中的
Figure imgf000066_0002
替换为相同质量份的
Figure imgf000067_0001
, 得到液晶组合物;
该组合物的性能如下所示:
Δη: 0.089;
cp [°C]: 89 °C ;
△ε: 9.4;
Vio[v]: 1.51;
Cr%: 50%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 11
按照如下重
Figure imgf000067_0002
手性剂 0.16 该组合物的性能如下所示:
Δη: 0.115;
cp [°C]: 74 °C ;
△ε: 6.8;
Vio[v]: 2.0;
Cr%: 20%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000068_0001
该组合物的性能如下所示:
Δη: 0.115;
cp [°C]: 74 °C ;
△ε: 6.8;
Vio[v]: 2.0;
Cr%: 52%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 12
Figure imgf000068_0002
Figure imgf000069_0001
手性剂 0.45 该组合物的性能如下所示:
Δη: 0.100;
cp [°C]: 100°C ;
Δε: 7.7;
Vio[v]: 1.73;
Cr%: 21%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 13
按照如下重
Figure imgf000070_0001
手性剂 0.17 该组合物的性能如下所示:
Δη: 0.132;
cp [°C]: 75 °C ;
△ε: 5.0;
Vio[v]: 2.3;
Cr%: 15%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000071_0001
该组合物的性能如下所示:
Δη: 0.128;
cp [°C]: 75 °C ;
△ε: 5.0;
Vio[v]: 2.3;
Cr%: 53%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 14
按照如下重量份将各组分混匀, 得到本发明提供的液晶组合物 n:
13
Figure imgf000071_0002
Figure imgf000072_0001
手性剂 0.51 该组合物的性能如下所示:
Δη: 0.088;
cp [°C]: 87 °C ;
Δε: 8.7;
Cr%: 6%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 IPS模式的显示器。 实施例 15
Figure imgf000072_0002
Figure imgf000073_0001
手性剂 0.52 该组合物的性能如下所示:
△n: 0.0910;
cp [°C]: 100°C ;
Δε: 7.7;
Cr%: 8%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 IPS模式的显示器。 实施例 16
Figure imgf000073_0002
Figure imgf000074_0001
该组合物的性能如下所示:
Δη: 0.930;
cp [°C]: 87 °C ;
△ε: 9.9;
Cr%: 0%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 IPS模式的显示器。 实施例 17
按照如下重量份将各组分混匀, 得到本发明提供的液晶组合物 q:
Figure imgf000075_0001
该组合物的性能如下所示:
0.101;
cp [°C] : 83 °C ;
△ε: 3.0;
Cr%: 12%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 IPS模式的显示器。 实施例 18
按照如下重
归属式 18
Figure imgf000075_0002
归属式
归属
归属
归属
归属式
Figure imgf000076_0001
归属式 ΠΙ-1
HsC /Λ t^。~ / 「 19 归属式 II ' F
该组合物的性能如下所示:
Δη: 0.122;
cp [°C]: 72 °C ;
△ε: 13.1;
Cr%: 5%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 19
按照如下重
Figure imgf000077_0001
该组合物的性能如下所示 Δη: 0.110; cp [°C]: 90 °C ;
△ε: 11.5;
Vio[v]: 1.49;
Cr%: 9%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 20
按照如下重
Figure imgf000078_0001
Figure imgf000079_0001
该组合物的性能如下所示:
△n: 0.140;
cp [°C]: 85 °C;
△ε: 12.5;
Vio[v]: 1.40;
Cr%: 9%。
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。 实施例 21
Figure imgf000079_0002
Figure imgf000080_0001
该组合物的性能如下所示:
Δη: 0.094;
cp [°C] : 83;
△ε: 8.5;
Figure imgf000080_0002
Cr%: 9%
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000080_0003
该组合物的性能如下所示:
Δη: 0.103;
cp [°C] : 88;
△ε: 8.0;
Vio[v] : 1.61;
Cr%: 35。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 22
按照如下重量份将各组分混匀, 得到本发明提供的液晶组合物 V:
归属式 II
Figure imgf000080_0004
25
Figure imgf000081_0001
该组合物的性能如下所示:
Δη: 0.093;
cp [°C]: 54;
Δε: 9.9;
Figure imgf000081_0002
Cr%: 7%
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000081_0003
Figure imgf000082_0001
该组合物的性能如下所示:
Δη: 0.115;
cp [°C]: 65;
△ε: 7.9;
Vio[v]: 1.4;
Cr%: 31%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。 实施例 23
Figure imgf000082_0002
该组合物的性能如下所示:
Δη: 0.088;
cp [°C]: 59; △ε: ; 8.2
Figure imgf000083_0001
Cr%: 31%
由上可知, 该液晶组合物具有有利的折射率, 适度大的介电常数, 很好的常温 低温对比度变化率 (也即变化率较小) , 非常适用于 TN模式的显示器。
Figure imgf000083_0002
物;
该组合物的性能如下所示:
Δη: 0.103;
cp [°C] : 65;
△ε: 6.0;
Vio[v] : 1.6;
Cr%: 42%。
由上可知, 此液晶组合物的常温低温对比度变化率较差 (也即变化率较大) , 因此对于对比度变化率要求较高的 TN模式的显示器不具有优势。
工业应用
本发明提供的液晶组合物, 具有高的对比度性能,尤其是在低温下具有低的变 化率, 亦即在低温下 (比如 -20°C下) 和常温下相比, 对比度下降较小。 同时具有 对于实际应用合适的性能, 如宽的向列相范围, 适当的介电各向异性 (Δ ε ) 和光 学各向异性 (Δ η) 和操作电压, 优异的响应时间, 高的电阻率及电压保持率, 低 的旋转粘度等。 通过对各个组分含量的调整, 本发明提供的向列相型液晶组合物, 可以具有不同阈值电压和双折射特性, 可以做成客户通常所用的各个体系, 便于在 不同液晶盒厚和不同驱动电压下使用。 权利要求
1、 一种液晶组合物, 包含组分&、 组分 b和组分 c;
其中, 所述组分 a选自式 I化合物中的至少一种;
所述组分 b 为介电各向异性大于 3的液晶化合物;
所述组分 c
Figure imgf000084_0001
式 I
所述式 I中, Ro选自 H原子、 C1-C10的烷基、氟取代的 C1-C10的烷基、 C1-C10 的烷氧基、 氟取代的 C1-C10的烷氧基、 C2-C10的链烯基、 氟取代的 C2-C10的链 烯基、 C3-C8的链烯氧基、 氟取代的 C3-C8的链烯氧基、 环戊基、 环丁基、 环己基 和环庚基中的任意一种;
Ri选自如下基团 a、 b或 c:
a、选自 H、 Cl、 F、 -CN -OCN -OCF3、 -CF3、 -CHF2、 -CH2F、 -OCHF2、 -SCN -NCS -SF5、 C1-C15的焼基、 C1-C15的烷氧基、 C2-C15的烯基或 C2-C15的烯氧 基中的任意一种;
b、将所述基团 a中至少一个 -CH2-被如下基团中至少一种取代且氧原子不直接 相连而得的基团: -CH=CH -、 -C≡C -、 -COO-、 -OOC -、环丁基、环戊基、 -0-和 -S-; c、 将所述基团 a中至少一个氢被氟或氯取代而得的基团;
Χ^Β Χ2相同或不同, 均选自 Η原子和氟原子中的任意一种;
Ζ^Ρ Ζ2相同或不同, 均选自单键、 -CH2-CH2-、 -(CH2)4-、 -CH=CH -、 -C≡C -、 -C00-、 -OOC -、 -CF20-、 -0CH2-、 -CH20-、 -0CF2-、 -CF2CH2-、 -CH2CF2-、 -C2F4- 和 -C 一种:
Figure imgf000084_0002

Claims

a和 b均选自 0-3的整数;
c为 1或 2, 且 a+b+c≤5。
2、 根据权利要求 1所述的组合物, 其特征在于: 所述液晶组合物由组分&、 组分 b和组分 c组成。
3、 根据权利要求 1或 2所述的组合物, 其特征在于: 所述组分&、 组分 b和 组分 c的质量比为 10-70: 10-70: 5-70。
4、 根据权利要求 1-3任一所述的组合物, 其特征在于: 所述式 I所示化合物
Figure imgf000085_0001
Figure imgf000086_0001
96CT00/C10ZN3/X3d CC8990/ST0Z OAV
Figure imgf000087_0001
Figure imgf000088_0001
所述式 11-133中, 的定义与权利要求 1中 的定义相同; 所述式 11-137中, -(F)均表示 -F或 -H; 所述组分 b选自式 II所示化合物中的至少一种:
Figure imgf000089_0001
式 II
所述式 II中, 的定义与所述式 I中 Ro的定义相同;
和 \υ 的定义与 ~J 相同;
X3和 的定义与所述式 I中 的定义相同;
X4的定义与所述式 I中 R 的定义相同;
e为 0-3的整数;
所述式 II所示化合物具体为如下式 Π-1至式 11-13所示化合物中的任意
Figure imgf000089_0002
Figure imgf000090_0001
所述式 Π-l至式 Π-13中, 和 Χ4的定义分别与所述式 II中 和 Χ4的定义 相同;
-(F)表示 -F或 -Η; 所述组分 c选自式 III
Figure imgf000090_0002
式 III
所述式 III中, R2、 R3的定义与权利要求 1所述式 I中 Ro的定义相同;
^^的定义与权利要求 1所述式 I中^^的定义相同;
d为 0-3的整数;
任意一种:
Figure imgf000090_0003
Figure imgf000091_0001
所述式 ΙΠ-1至 ΠΙ-10中, R2和 R3的定义均与权利要求 1中 Ro的定义相同; -(F)表示 -F或 -H。
5、 根据权利要求 1-4任一所述的组合物, 其特征在于: 所述液晶组合物中还 含有式 IV-式 V所示化
Figure imgf000091_0002
式 V
所述式 IV-式 V中, R5和 的定义与权利要求 1所述式 I中 RQ的定义相同; 的定义均与权利要求
1
Figure imgf000091_0003
Z3选自 -CH2-CH2-、 -CH=CH-、 -C≡C-、 -COO-、 -OOC-、 -OCH2-、 -CH20-、 -CF2CH2- -CH2CF2-、 -C2F4-和 -CF = CF-中的至少一种;
X6的定义与权利要求 1中 的定义相同;
Xy的定义与权利要求 4中 X4的定义相同;
f、 g、 h和 i均为 0-3的整数。
6、 根据权利要求 5所述的组合物, 其特征在于: 所述式 IV和式 V所示化合 物的质量比为 0-30: 0-40;
所述式 IV所示化合物与所述式 III所示化合物的质量比为 0-30: 5-70; 且所述式 IV和式 V所示化合物的质量均不为 0。
7、根据权利要求 5或 6所述的组合物, 其特征在于: 所述式 IV所示化合物为
Figure imgf000092_0001
所述式 IV-1至 IV-5中, R5和 的定义均与权利要求 1中 Ro的定义相同; -(F)表示 -F或 -H; 所述式 V所示化合物为如下式 V-1至 V-17中的任意一种:
Figure imgf000092_0002
Figure imgf000093_0001
所述式 V-l至 V-17中, R7的定义与权利要求 1所述式 I中 的定义相同; -(F)表示 -F或 -H。
8、 根据权利要求 1-7任一所述的组合物, 其特征在于: 所述液晶组合物由所 述式 I-式 V所示化合物组成;
具体为由质量比为 10-70: 10-70: 5-70: 0-30: 0-40的式 I至式 V所示化合物 组成; 且所述式 IV和式 V所示化合物的质量均不为 0。
9、 包含权利要求 1-8任一所述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, 优选有源矩阵寻址液晶显示元件或液晶显示器;
所述有源矩阵显示元件或显示器具体为 TN-TFT或 IPS-TFT液晶显示元件或显 不器。
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