WO2018032985A1 - 液晶组合物及液晶显示器件 - Google Patents

液晶组合物及液晶显示器件 Download PDF

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WO2018032985A1
WO2018032985A1 PCT/CN2017/095927 CN2017095927W WO2018032985A1 WO 2018032985 A1 WO2018032985 A1 WO 2018032985A1 CN 2017095927 W CN2017095927 W CN 2017095927W WO 2018032985 A1 WO2018032985 A1 WO 2018032985A1
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compound
liquid crystal
crystal composition
iii
formula
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PCT/CN2017/095927
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English (en)
French (fr)
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徐海彬
韩文明
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江苏和成显示科技股份有限公司
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Priority to KR1020187035604A priority Critical patent/KR102190145B1/ko
Priority to US16/325,240 priority patent/US11053441B2/en
Publication of WO2018032985A1 publication Critical patent/WO2018032985A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
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    • C09K2019/0466—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 linking chain being a -CF2O- chain
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Definitions

  • the present invention relates to a liquid crystal composition, and more particularly to having a suitably high optical anisotropy, a high dielectric anisotropy, a low threshold voltage, a suitable nematic phase temperature range, good reliability, and Thermal stability, as well as good low temperature miscibility liquid crystal composition.
  • the invention further relates to the use of the liquid crystal composition in a liquid crystal display device.
  • the liquid crystal material is a mixture of organic rod-shaped small molecule compounds having both fluidity of liquid and anisotropy of crystal at a certain temperature.
  • Liquid crystal materials are widely used in liquid crystal display devices of electronic calculators, automobile instruments, televisions, computers, etc. due to their optical anisotropy and dielectric anisotropy.
  • the liquid crystal material is divided into phase-change temperature, which can be divided into normal temperature liquid crystal (phase transition temperature range: -10 ° C ⁇ 60 ° C) and wide temperature liquid crystal (phase transition temperature range: -20 ° C ⁇ 70 ° C), with different phase transitions
  • phase-change temperature can be divided into normal temperature liquid crystal (phase transition temperature range: -10 ° C ⁇ 60 ° C) and wide temperature liquid crystal (phase transition temperature range: -20 ° C ⁇ 70 ° C), with different phase transitions
  • Liquid crystal displays made of temperature liquid crystal materials have different application locations. With the ever-expanding application range of liquid crystal display devices, people have put forward higher requirements on the operating temperature range of the device to adapt to various harsh environments. In order to expand the working range of liquid crystal displays, liquid crystal display materials also need to have a wide nematic phase temperature range to meet the requirements of maintaining good display in various environments.
  • liquid crystal display elements For liquid crystal display elements, according to the display mode of liquid crystal, it is divided into PC (phase change), TN (twist nematic), STN (super twisted nematic), and ECB (electrically controlled birefringence). , electronically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching), VA (vertical alignment).
  • the liquid crystal display element is classified into a reflection type using natural light, a transmission type using a backlight, and a semi-transmissive type using both natural light and backlight depending on the type of the light source.
  • liquid crystal compounds and liquid crystal media having good chemical and thermal stability, good stability against electric fields and electromagnetic radiation, and appropriate optical anisotropy are in line with current needs. Since liquid crystals are usually used as a mixture of various components, mutual solubility between components is particularly important, and depending on the type of battery and application, liquid crystals must meet different requirements, such as response speed and dielectric. Anisotropy and optical anisotropy, etc. For example, a liquid crystal composition having a high dielectric anisotropy can lower the threshold voltage of the liquid crystal and further reduce the power consumption.
  • the present invention is prepared to have a suitably high optical orientation under the premise of satisfying various indexes of the liquid crystal material.
  • a heterogeneous, lower threshold voltage, suitable nematic phase temperature range, higher dielectric anisotropy, good reliability and photothermal stability, and good low temperature miscibility liquid crystal composition solving the existing The limitations in the technology have expanded the field of application of liquid crystal compositions.
  • An object of the present invention is to provide a liquid crystal composition which satisfies a suitable nematic temperature range with a suitable high optical anisotropy, a low threshold voltage, a suitable elastic constant, and a suitable nematic phase temperature range. It has high dielectric anisotropy, good reliability and thermal stability, and good low temperature miscibility.
  • the liquid crystal display including the liquid crystal composition has high reliability and good low-temperature storage performance, can be well displayed in a harsh environment, and has a low driving voltage.
  • R 1 represents an alkyl group or alkoxy group having 1 to 5 carbon atoms, or an alkenyl group or alkenyloxy group having 2 to 5 carbon atoms;
  • Y 1 and Y 2 are the same or different and each independently represents H, F, or a methyl or methoxy group which is not halogenated or halogenated;
  • X 1 represents F, Cl, or an alkyl or alkoxy group having 1 to 5 carbon atoms which is not halogenated or halogenated.
  • the three or more compounds conforming to Formula I account for the liquid crystal composition 15-30% of the total weight.
  • the three or more compounds according to formula I comprise at least two compounds of formula I-1,
  • R 1 , Y 1 , Y 2 and X 1 are as defined in formula I;
  • the total amount of the at least two compounds conforming to the formula I-1 is not less than 10% by weight based on the total weight of the liquid crystal composition, and the content of each of the compounds conforming to the formula I-1 is not high. At 8%.
  • the structure and content of the compound of the formula I-1 are adjusted so that the liquid crystal composition containing such a liquid crystal compound has good low-temperature storage stability.
  • R 1 represents an alkyl group having 1 to 5 carbon atoms, and Y 1 , Y 2 and Y 3 are the same or different, each independently being H or F; X 1 represents F, CF 3 or OCF 3 .
  • the compound of formula I-1 is selected from the group consisting of:
  • the three or more compounds according to formula I further comprise: one or more formula I of from 0 to 15% by weight based on the total weight of the liquid crystal composition -2 compound
  • R 1A represents an alkyl group or alkoxy group having 1 to 5 carbon atoms, or an alkenyl group or an alkenyloxy group having 2 to 5 carbon atoms
  • Y 1A and Y 2A are the same or different and each independently represents H , F, or a methyl or methoxy group which is not halogenated or halogenated
  • Y 3A represents H or F; Freedom of choice with Group of groups; and for When Y 3A represents H;
  • X 1A represents F, Cl, or an alkyl or alkoxy group having 1 to 5 carbon atoms which are not halogenated or halogenated.
  • R 1A represents an alkyl group having 1 to 5 carbon atoms, and Y 1A , Y 2A and Y 3A are the same or different, each independently being H or F; X 1A represents F , CF 3 or OCF 3 .
  • the compound of formula I-2 is selected from the group consisting of:
  • the liquid crystal composition further comprises:
  • One or more compounds of the general formula II in an amount of from 10 to 50% by weight based on the total weight of the liquid crystal composition
  • R 2 and R 3 are the same or different and each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group or alkenyloxy group having 2 to 5 carbon atoms.
  • R 2 represents an alkyl group having 1 to 5 carbon atoms
  • R 3 represents an alkyl group having 1 to 5 carbon atoms or a carbon number of 2 to 3
  • Alkenyl preferably, R 2 represents an alkyl group having 1 to 5 carbon atoms; and R 3 represents an alkyl group having 1 to 5 carbon atoms or a carbon number of 2 to 3; Alkenyl.
  • the compound of the formula II accounts for 10-48% of the total weight of the liquid crystal composition.
  • the compound of formula II is selected from the group consisting of:
  • the compound of formula II is selected from the group consisting of:
  • the liquid crystal composition further comprises:
  • R 4 , R 5 and R 6 are the same or different and each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group or alkenyloxy group having 2 to 5 carbon atoms;
  • Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 and Y 10 are the same or different and are each independently H, F, or a methyl or methoxy group which is not halogenated or halogenated;
  • X 2 represents F, Cl, or an alkyl or alkoxy group having 1 to 5 carbon atoms which is not halogenated or halogenated.
  • R 4 , R 5 and R 6 are the same or different and each independently represents an alkyl group having from 1 to 5 carbon atoms; said Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 and Y 10 are the same or different and are each independently H or F; the X 2 represents F or CF 3 .
  • the compound of the group consisting of the general formula III-1, the formula III-2, III-3 and a combination thereof is from 0 to 35% by weight based on the total weight of the liquid crystal composition.
  • the compound of the formula III-1 is selected from the group consisting of:
  • the compound of the formula III-2 is selected from the group consisting of:
  • the compound of formula III-2 is selected from the group consisting of:
  • the compound of the formula III-3 is selected from the group consisting of:
  • the compound of the formula III-3 is selected from the group consisting of:
  • the liquid crystal composition further comprises:
  • R 7 represents an alkyl group having 1 to 5 carbon atoms
  • Y 11 and Y 12 are the same or different and each independently represents F, Cl, or an alkyl or alkoxy group having 1 to 5 carbon atoms which are not halogenated or halogenated;
  • X 3 represents F, Cl, or an alkyl or alkoxy group having 1 to 5 carbon atoms which is not halogenated or halogenated.
  • the Y 11 and Y 12 represent F; Freedom of choice with a group consisting of; X 3 represents F.
  • the compound of formula IV is selected from the group consisting of:
  • the compound of formula IV is selected from the group consisting of:
  • the liquid crystal composition further comprises:
  • R 8 and R 9 are the same or different and each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group or alkenyloxy group having 2 to 5 carbon atoms.
  • R 8 and R 9 are the same or different and each independently represents an alkyl group or alkoxy group having 1 to 5 carbon atoms or an alkenyl group having 2 to 3 carbon atoms.
  • the R 8 represents -C 3 H 7 and the R 9 represents an alkoxy group having 1 to 3 carbon atoms.
  • the R 8 represents an alkyl group having 3 to 5 carbon atoms
  • the R 9 represents an alkyl group having 1 to 3 carbon atoms.
  • the R 8 represents -C 3 H 7 and the R 9 represents an alkyl group or alkoxy group having 1 to 3 carbon atoms.
  • R 8 represents an alkyl group having 2 to 4 carbon atoms.
  • the R 8 represents an alkyl group having 3-5 carbon atoms
  • the R 9 represents -C 3 H 7 .
  • the R 8 represents an alkyl group having 3-5 carbon atoms
  • the R 9 represents -C 3 H 7 .
  • the R 8 represents an alkyl group having 2 to 3 carbon atoms
  • the R 9 represents an alkyl group having 2 to 4 carbon atoms.
  • the compound of the formula I accounts for 15-30% by weight of the total liquid crystal composition; the compound of the formula II accounts for 15-48% of the total weight of the liquid crystal composition;
  • the general formula III-1, the general formula III-2, III-3 a compound of the group consisting of 0 to 33% by weight of the total weight of the liquid crystal composition;
  • the compound of the formula IV is 0 to 30% by weight based on the total weight of the liquid crystal composition;
  • the formula V- The compound of 1 to V-8 accounts for 0 to 40% by weight based on the total weight of the liquid crystal composition.
  • the compound of the formula I accounts for 20-30% by weight of the total weight of the liquid crystal composition; the compound of the formula II accounts for 20- of the total weight of the liquid crystal composition. 48%; the compound of the group consisting of the general formula III-1, the formula III-2, III-3 and combinations thereof accounts for 5-33% of the total weight of the liquid crystal composition; the compound of the formula IV accounts for The liquid crystal composition has a total weight of 5 to 30%; and the compound of the formula V-1 to V8 accounts for 4 to 40% by weight based on the total weight of the liquid crystal composition.
  • the compound of the formula I accounts for 20-30% by weight of the total liquid crystal composition; the compound of the formula II accounts for 25-48% of the total weight of the liquid crystal composition;
  • the compound of the group consisting of III-1, the formula III-2, III-3 and combinations thereof is 10-33% by weight based on the total weight of the liquid crystal composition;
  • the compound of the formula IV accounts for the total weight of the liquid crystal composition. 5-28%; and the compound of the formula V-1 to V-8 accounts for 4-40% of the total weight of the liquid crystal composition.
  • the compound of the formula I accounts for 20-30% by weight of the total weight of the liquid crystal composition; the compound of the formula II accounts for 25-48% of the total weight of the liquid crystal composition; The compound of the group consisting of Formula III-1, Formula III-2, III-3, and combinations thereof accounts for 15-33% of the total weight of the liquid crystal composition; the compound of Formula IV accounts for the total of the liquid crystal composition. 5-20% by weight; and the compound of the formula V-1 to V-8 accounts for 4 to 31% by weight based on the total weight of the liquid crystal composition.
  • liquid crystal composition further comprising one or more additives known to those skilled in the art and described in the literature. For example, 0-15% polychromatic dye and/or chiral dopant can be added.
  • the dopant accounts for 0 to 5% of the total weight of the liquid crystal composition; more preferably, the dopant accounts for 0-1% of the total weight of the liquid crystal composition.
  • Stabilizers which can be added, for example, to the mixture according to the invention are mentioned below.
  • the stabilizer is selected from the group consisting of stabilizers as shown below.
  • the stabilizer accounts for 0 to 5% of the total weight of the liquid crystal composition; more preferably, the stabilizer accounts for 0-1% of the total weight of the liquid crystal composition; Particularly preferably, the stabilizer comprises from 0 to 0.1% by weight based on the total weight of the liquid crystal composition.
  • a further aspect of the invention provides a liquid crystal display device comprising the liquid crystal composition of the invention.
  • the present invention determines a liquid crystal medium comprising the above liquid crystal composition by a combination experiment of the above compounds, having a suitably high optical anisotropy, a high optical anisotropy, a low threshold voltage, a suitably large elastic constant, Suitable nematic phase temperature range, good reliability and thermal stability, and good low temperature miscibility, suitable for use in liquid crystal displays, liquid crystal displays comprising the liquid crystal composition have good reliability and good low temperature storage performance In It is still well displayed in harsh environments and has a low drive voltage.
  • the ratios are all by weight, all temperatures are in degrees Celsius, and the thickness of the test for the response time data is 7 ⁇ m.
  • nCPUF The structural formula is expressed by the code listed in Table 2, and can be expressed as: nCPUF, where n in the code represents the number of C atoms of the left-end alkyl group, for example, n is "3", that is, the alkyl group is -C 3 H 7 ; C in the code represents a cyclohexane group.
  • the refractive index anisotropy was measured by an Abbe refractometer under a sodium light (589 nm) light source at 20 ° C; the dielectric test box was a TN90 type, and the cell thickness was 7 ⁇ m.
  • ⁇ ⁇ - ⁇ , where ⁇ is the dielectric constant parallel to the molecular axis, ⁇ is the dielectric constant perpendicular to the molecular axis, test conditions: 25°C, 1KHz, test box is TN90 type, box thickness 7 ⁇ m.
  • ⁇ 1 was tested using a TOYO6254 liquid crystal physical property evaluation system; the test temperature was 25 ° C, and the test voltage was 90V.
  • the VHR (initial) was tested using a TOYO6254 liquid crystal physical property evaluation system; the test temperature was 60 ° C, the test voltage was 5 V, and the test frequency was 6 Hz.
  • VHR high temperature
  • the liquid crystal was tested after degrading at 150 ° C for 1 h; the test temperature was 60 ° C, the test voltage was 5 V, and the test frequency was 6 Hz.
  • Example 1 The liquid crystal composition of Example 1 was prepared according to each compound and weight percentage listed in Table 2, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
  • Example 2 The liquid crystal composition of Example 2 was prepared according to each compound and weight percentage listed in Table 3, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
  • Example 3 The liquid crystal composition of Example 3 was formulated according to each compound and weight percentage listed in Table 4, and was filled in liquid crystal. Performance tests were performed between the two substrates of the display. The test data is shown in the following table:
  • Example 4 The liquid crystal composition of Example 4 was prepared according to each compound and weight percentage listed in Table 5, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data are shown in the following table:
  • Example 5 The liquid crystal composition of Example 5 was prepared according to each compound and weight percentage listed in Table 6, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data are as follows:
  • Example 6 The liquid crystal composition of Example 6 was prepared according to each compound and weight percentage listed in Table 7, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 7 The liquid crystal composition of Example 7 was prepared according to each compound and weight percentage listed in Table 8, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
  • Example 8 The liquid crystal composition of Example 8 was prepared according to each compound and weight percentage listed in Table 9, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 9 The liquid crystal composition of Example 9 was prepared according to each compound and weight percentage listed in Table 10, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 10 The liquid crystal composition of Example 10 was prepared according to the respective compounds and weight percentages listed in Table 11, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
  • Example 11 The liquid crystal composition of Example 11 was prepared according to each compound and weight percentage listed in Table 12, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 12 The liquid crystal composition of Example 12 was prepared according to each compound and weight percentage listed in Table 13, and was filled between two substrates of the liquid crystal display for performance test.
  • the test data are shown in the following table:
  • Example 13 The liquid crystal composition of Example 13 was prepared according to each compound and weight percentage listed in Table 14, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data are shown in the following table:
  • Example 14 The liquid crystal composition of Example 14 was prepared according to each compound and weight percentage listed in Table 15, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is as shown in the following table:
  • Example 15 The liquid crystal composition of Example 15 was prepared according to each compound and weight percentage listed in Table 16, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 16 The liquid crystal composition of Example 16 was prepared according to each compound and weight percentage listed in Table 17, and was filled in the performance test between the two substrates of the liquid crystal display. The test data are shown in the following table:
  • Example 17 The liquid crystal composition of Example 17 was prepared according to each compound and weight percentage listed in Table 18, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data is shown in the following table:
  • Example 18 The liquid crystal composition of Example 18 was prepared according to each compound and weight percentage listed in Table 19, and was filled in the performance test between the two substrates of the liquid crystal display.
  • the test data are as follows:
  • the liquid crystal composition provided by the present invention has suitably high optical anisotropy, high optical anisotropy, low threshold voltage, suitable nematic phase temperature range, suitable Elastic constant, low viscosity, good reliability and thermal stability, and good low temperature miscibility, suitable for IPS, TN-TFT liquid crystal displays.

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Abstract

一种液晶组合物及其应用，该液晶组合物包含15-30重量％的三种或更多种符合通式Ⅰ的化合物；所述通式Ⅰ必须包含至少两种通式Ⅰ-1的化合物；其中，以所述液晶组合物的总重量计，所述通式Ⅰ-1的化合物的总量不低于10％，且每一种通式I-1的化合物的含量不高于8％。该液晶组合物具有适当高的光学各向异性、较高的介电各向异性、较低的阈值电压、合适的弹性常数、合适的向列相温度范围，良好的可靠性及热稳定性，以及良好的低温互溶性。

Description

液晶组合物及液晶显示器件 技术领域
本发明涉及一种液晶组合物，特别涉及一种具有适当高的光学各向异性、较高的介电各向异性、较低的阈值电压、合适的向列相温度范围，良好的可靠性及热稳定性，以及良好的低温互溶性的液晶组合物。本发明还涉及所述液晶组合物在液晶显示器件中的应用。
背景技术
液晶材料是在一定的温度下，既具有液体的流动性又具有晶体的各向异性的有机棒状小分子化合物的混合物。液晶材料因其具有光学各向异性及介电各项异性的特点而被广泛应用于电子计算器、汽车仪表、电视机、计算机等器件液晶显示元件中。
液晶材料按相变温度划分，可分为常温液晶(相变温度范围为：-10℃～60℃)和宽温液晶(相变温度范围为：-20℃～70℃)，用不同相变温度的液晶材料所制造的液晶显示器，其应用地点有所不同。随着液晶显示器件应用范围的不断扩大，人们对器件的工作温度范围也提出了更高的要求，以适应各种恶劣的使用环境。为了扩大液晶显示器的工作范围，液晶显示材料还需要有宽的向列相温度范围，以满足在各种环境中均能保持良好显示的要求。
对于液晶显示元件来讲，根据液晶的显示模式分为PC(phase change，相变)、TN(twist nematic，扭曲向列)、STN(super twisted nematic，超扭曲向列)、ECB(electrically controlled birefringence，电控双折射)、OCB(optically compensated bend，光学补偿弯曲)、IPS(in-plane switching，共面转变)、VA(vertical alignment，垂直配向)等类型。液晶显示元件根据光源的类型分为利用自然光的反射型、利用背光的透过型、以及利用自然光和背光两种光源的半透过型。
对于液晶显示器来说，具备良好的化学和热稳定性、良好的对电场和电磁辐射的稳定性、适当的光学各向异性等特性的液晶化合物与液晶介质是符合目前需求的。由于液晶通常作为多种组分的混合物使用，各组分之间的彼此互溶则显得尤为重要，而依据不同的电池类型和应用领域，液晶必须要满足不同的要求，如响应速度、介电各向异性和光学各向异性等。如具有较高的介电各向异性的液晶组合物，可以降低液晶的阈值电压，进一步降低消耗电功率。
但是在现有技术(如EP0673986、DE19528106、DE19528107等)中显著存在的缺点是较低电阻率且操作电压过高等。另外，低温存储稳定性较差也是现有许多液晶材料的缺 陷，如WO9732942A1。
在现有技术存在介电各向异性较小、可靠性及低温稳定较差等问题的情况下，本发明在致力于满足液晶材料多方面指标的前提下，制备出具有适当高的光学各向异性、较低的阈值电压，合适的向列相温度范围、较高的介电各向异性、良好的可靠性及光热稳定性，以及良好的低温互溶性的液晶组合物，解决了现有技术中的局限，扩大了液晶组合物的应用领域。
发明内容
本发明的发明目的是提供一种液晶组合物，所述液晶组合物在满足具有适当高的光学各向异性、较低的阈值电压、合适的弹性常数，合适的向列相温度范围基础上，具有较高的介电各向异性、良好的可靠性及热稳定性，以及良好的低温互溶性。包含所述液晶组合物的液晶显示器具有可靠性好、低温存储性能好的性能，在恶劣环境中仍能很好显示，且具有驱动电压低的特性。
本发明所采取的技术方案是提供一种液晶组合物，所述液晶组合物包含：
三种或更多种符合通式Ⅰ的化合物
Figure PCTCN2017095927-appb-000001
其中，
R1表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；
Y1和Y2相同或不同，各自独立地表示H、F，或未被卤代或被卤代的甲基或甲氧基；
Figure PCTCN2017095927-appb-000002
选自由
Figure PCTCN2017095927-appb-000003
Figure PCTCN2017095927-appb-000004
和
Figure PCTCN2017095927-appb-000005
组成的组；
Figure PCTCN2017095927-appb-000006
选自由
Figure PCTCN2017095927-appb-000007
Figure PCTCN2017095927-appb-000008
和
Figure PCTCN2017095927-appb-000009
组成的组；
X1表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
在本发明的实施方案中，所述三种或三种以上符合通式Ⅰ的化合物占所述液晶组合物 总重量的15-30％。
在本发明的实施方案中，所述三种或更多种符合通式Ⅰ的化合物包含至少两种通式Ⅰ-1的化合物，
Figure PCTCN2017095927-appb-000010
R1、Y1、Y2和X1如通式Ⅰ中的定义；
其中，所述至少两种符合通式Ⅰ-1的化合物的总量占所述液晶组合物的总重量不低于10％，且其中每一种符合通式Ⅰ-1的化合物的含量不高于8％。
在本发明的实施方案中，调节通式Ⅰ-1的化合物结构及含量，使得包含此类液晶化合物的液晶组合物具有良好的低温存储稳定性。
在本发明的实施方案中，优选所述R1表示碳原子数为1-5的烷基，Y1、Y2和Y3相同或不同，各自独立地为H或F；X1表示F、CF3或OCF3。
在本发明的一些实施方案中，优选所述通式Ⅰ-1的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000011
Figure PCTCN2017095927-appb-000012
以及
Figure PCTCN2017095927-appb-000013
在本发明的实施方案中，可选地，所述三种或三种以上符合通式Ⅰ的化合物还包含：占所述液晶组合物总重量0-15%的一种或多种通式Ⅰ-2的化合物
Figure PCTCN2017095927-appb-000014
其中，R1A表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；Y1A和Y2A相同或不同，各自独立地表示H、F，或未被卤代或被卤代的甲基或甲氧基；Y3A表示H或F；
Figure PCTCN2017095927-appb-000015
选自由
Figure PCTCN2017095927-appb-000016
和
Figure PCTCN2017095927-appb-000017
组成的组；且 当
Figure PCTCN2017095927-appb-000018
为
Figure PCTCN2017095927-appb-000019
时，Y3A表示H；
X1A表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
在本发明的一些实施方案中，所述R1A表示碳原子数为1-5的烷基，Y1A、Y2A和Y3A相同或不同，各自独立地为H或F；X1A表示表示F、CF3或OCF3。
在本发明的一些实施方案中，优选所述通式Ⅰ-2的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000020
Figure PCTCN2017095927-appb-000021
以及
Figure PCTCN2017095927-appb-000022
特别优选通式Ⅰ-2的化合物选自由如下化合物：
Figure PCTCN2017095927-appb-000023
以及
Figure PCTCN2017095927-appb-000024
在本发明的实施方案中，所述液晶组合物还包含：
占所述液晶组合物总重量10-50％的一种或多种通式Ⅱ的化合物
Figure PCTCN2017095927-appb-000025
其中，
R2和R3相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基。
在本发明的实施方案中，优选所述R2表示碳原子数为1-5的烷基；所述R3表示碳原子数为1-5的烷基，或碳原子数为2-3的烯基。
在本发明的实施方案中，优选所述通式Ⅱ的化合物占所述液晶组合物总重量的10-48％。
在本发明的实施方案中，优选所述通式Ⅱ的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000026
以及
Figure PCTCN2017095927-appb-000027
特别优选通式Ⅱ的化合物选自由如下化合物：
Figure PCTCN2017095927-appb-000028
以及
Figure PCTCN2017095927-appb-000029
在本发明的实施方案中，所述液晶组合物还包含：
占所述液晶组合物总重量0-50％的一种或多种选自通式Ⅲ-1的化合物、通式Ⅲ-2的化合物和通式Ⅲ-3的化合物组成的组的化合物
Figure PCTCN2017095927-appb-000030
其中，
R4、R5和R6相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；
Y4、Y5、Y6、Y7、Y8、Y9和Y10相同或不同，各自独立地为H、F，或未被卤代或被卤代的甲基或甲氧基；
X2表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
在本发明的实施方案中，优选R4、R5和R6相同或不同，各自独立地表示碳原子数为1-5的烷基；所述Y4、Y5、Y6、Y7、Y8、Y9和Y10相同或不同，各自独立地为H或F；所述X2表示F或CF3。
在本发明的实施方案中，优选所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的0-35％。
在本发明的实施方案中，优选所述通式Ⅲ-1的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000031
Figure PCTCN2017095927-appb-000032
以及
Figure PCTCN2017095927-appb-000033
在本发明的实施方案中，优选所述通式Ⅲ-2的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000034
Figure PCTCN2017095927-appb-000035
以及
Figure PCTCN2017095927-appb-000036
特别优选通式Ⅲ-2的化合物选自由如下化合物：
Figure PCTCN2017095927-appb-000037
以及
Figure PCTCN2017095927-appb-000038
在本发明的实施方案中，优选所述通式Ⅲ-3的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000039
Figure PCTCN2017095927-appb-000040
以及
Figure PCTCN2017095927-appb-000041
特别优选通式Ⅲ-3的化合物选自由如下化合物：
Figure PCTCN2017095927-appb-000042
以及
Figure PCTCN2017095927-appb-000043
在本发明的实施方案中，所述液晶组合物还包含：
占所述液晶组合物总重量0-30％的一种或多种选自通式Ⅳ的化合物
Figure PCTCN2017095927-appb-000044
其中，
R7表示碳原子数为1-5的烷基；
Y11和Y12相同或不同，各自独立地表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基；
Figure PCTCN2017095927-appb-000045
选自由
Figure PCTCN2017095927-appb-000046
Figure PCTCN2017095927-appb-000047
和
Figure PCTCN2017095927-appb-000048
组成的组；
X3表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
在本发明的实施方案中，所述Y11和Y12表示F；所述
Figure PCTCN2017095927-appb-000049
选自由
Figure PCTCN2017095927-appb-000050
Figure PCTCN2017095927-appb-000051
和
Figure PCTCN2017095927-appb-000052
组成的组；所述X3表示F。
更优地，所述
Figure PCTCN2017095927-appb-000053
选自由
Figure PCTCN2017095927-appb-000054
和
Figure PCTCN2017095927-appb-000055
组成的组。
在本发明的实施方案中，优选所述通式Ⅳ的化合物选自由如下化合物组成的组：
Figure PCTCN2017095927-appb-000056
Figure PCTCN2017095927-appb-000057
以及
Figure PCTCN2017095927-appb-000058
特别优选通式Ⅳ的化合物选自由如下化合物：
Figure PCTCN2017095927-appb-000059
以及
Figure PCTCN2017095927-appb-000060
在本发明的实施方案中，所述液晶组合物还包含：
占所述液晶组合物总重量0-40％的一种或多种选自由式Ⅴ-1至式Ⅴ-8化合物组成的组中的化合物
Figure PCTCN2017095927-appb-000061
Figure PCTCN2017095927-appb-000062
以及
Figure PCTCN2017095927-appb-000063
其中，
R8和R9相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基。
在本发明的实施方案中，所述R8和R9相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-3的烯基。
通式Ⅴ-1中，特别优选所述R8表示-C3H7，所述R9表示碳原子数为1-3的烷氧基。
通式Ⅴ-2中，特别优选所述R8表示碳原子数为3-5的烷基，所述R9表示碳原子数为1-3的烷基。
通式Ⅴ-3中，特别优选所述R8表示-C3H7或碳原子数为CH2＝CHC2H4-，所述R9表示碳原子数为1-3的烷基。
通式Ⅴ-4中，特别优选所述R8表示-C3H7，所述R9表示碳原子数为1-3的烷基或烷氧基。
通式Ⅴ-5中，特别优选所述R8表示碳原子数为2-4的烷基。
通式Ⅴ-6中，特别优选所述R8表示碳原子数为3-5的烷基，所述R9表示-C3H7。
通式Ⅴ-7中，特别优选所述R8表示碳原子数为3-5的烷基，所述R9表示-C3H7。
通式Ⅴ-8中，特别优选所述R8表示碳原子数为2-3的烷基，所述R9表示碳原子数为2-4的烷基。
在本发明的实施方案中，所述通式Ⅰ的化合物占所述液晶组合物总重量的15-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的15-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3 及其组合组成的组的化合物占所述液晶组合物总重量的0-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的0-30％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的0-40％。
在本发明的实施方案中，优选地，所述通式Ⅰ的化合物占所述液晶组合物总重量的20-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的20-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的5-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的5-30％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的4-40％。
更优地，所述通式Ⅰ的化合物占所述液晶组合物总重量的20-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的25-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的10-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的5-28％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的4-40％。
作为特别优选方案，所述通式Ⅰ的化合物占所述液晶组合物总重量的20-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的25-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的15-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的5-20％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的4-31％。
本发明另一方面提供一种液晶组合物，还包含本领域技术人员已知和文献中描述的一种或多种添加剂。例如，可以加入0-15％多色染料和/或手性掺杂剂。
如下显示优选加入到根据本发明的混合物中的可能掺杂剂。
Figure PCTCN2017095927-appb-000064
Figure PCTCN2017095927-appb-000065
Figure PCTCN2017095927-appb-000066
以及
Figure PCTCN2017095927-appb-000067
在本发明的实施方案中，优选所述掺杂剂占所述液晶组合物总重量的0-5％；更优地，所述掺杂剂占所述液晶组合物总重量的0-1％。
如下提及例如可以加入到根据本发明的混合物中的稳定剂。
Figure PCTCN2017095927-appb-000068
Figure PCTCN2017095927-appb-000069
Figure PCTCN2017095927-appb-000070
Figure PCTCN2017095927-appb-000071
优选地，所述稳定剂选自如下所示的稳定剂。
Figure PCTCN2017095927-appb-000072
在本发明的实施方案中，优选所述稳定剂占所述液晶组合物总重量的0-5％；更优地，所述稳定剂占所述液晶组合物总重量的0-1％；作为特别优选方案，所述稳定剂占所述液晶组合物总重量的0-0.1％。
本发明的再一方面提供一种液晶显示器件，所述液晶显示器件包含本发明的液晶组合物。
本发明通过对上述化合物进行组合实验，确定了包括上述液晶组合物的液晶介质，具有适当高的光学各项异性、较高的光学各向异性、较低的阈值电压、合适大的弹性常数、合适的向列相温度范围、良好的可靠性及热稳定性，以及良好的低温互溶性，适用于液晶显示器中，包含所述液晶组合物的液晶显示器具有可靠性好、低温存储性能好的性能，在 恶劣环境中仍能很好显示，且具有驱动电压低的特性。
在本发明中如无特殊说明，所述的比例均为重量比，所有温度均为摄氏度温度，所述的响应时间数据的测试选用的盒厚为7μm。
具体实施方式
以下将结合具体实施方案来说明本发明。需要说明的是，下面的实施例为本发明的示例，仅用来说明本发明，而不用来限制本发明。在不偏离本发明主旨或范围的情况下，可进行本发明构思内的其他组合和各种改良。
为便于表达，以下各实施例中，液晶组合物的基团结构用表1所列的代码表示：
表1液晶化合物的基团结构代码
Figure PCTCN2017095927-appb-000073
以如下结构式的化合物为例：
Figure PCTCN2017095927-appb-000074
该结构式如用表2所列代码表示，则可表达为：nCPUF，代码中的n表示左端烷基的C原子数，例如n为“3”，即表示该烷基为-C3H7；代码中的C代表环己烷基。
以下实施例中测试项目的简写代号如下：
Figure PCTCN2017095927-appb-000075
其中，折射率各向异性使用阿贝折光仪在钠光灯(589nm)光源下、20℃测试得；介电测试盒为TN90型，盒厚7μm。
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：25℃、1KHz、测试盒为TN90型，盒厚7μm。
γ1使用TOYO6254型液晶物性评价系统测试得到；测试温度为25℃，测试电压为90V。
VHR(初始)是使用TOYO6254型液晶物性评价系统测试得；测试温度为60℃，测试电压为5V，测试频率为6Hz。
VHR(高温)使用TOYO6254型液晶物性评价系统测试得到；液晶在150℃劣化1h后测试得；测试温度为60℃，测试电压为5V，测试频率为6Hz。
实施例1
按表2中所列的各化合物及重量百分数配制成实施例1的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表2液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000076
实施例2
按表3中所列的各化合物及重量百分数配制成实施例2的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表3液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000077
实施例3
按表4中所列的各化合物及重量百分数配制成实施例3的液晶组合物，其填充于液晶 显示器两基板之间进行性能测试，测试数据如下表所示：
表4液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000078
实施例4
按表5中所列的各化合物及重量百分数配制成实施例4的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表5液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000079
实施例5
按表6中所列的各化合物及重量百分数配制成实施例5的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表6液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000080
实施例6
按表7中所列的各化合物及重量百分数配制成实施例6的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表7液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000081
实施例7
按表8中所列的各化合物及重量百分数配制成实施例7的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表8液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000082
实施例8
按表9中所列的各化合物及重量百分数配制成实施例8的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表9液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000083
实施例9
按表10中所列的各化合物及重量百分数配制成实施例9的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表10液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000084
实施例10
按表11中所列的各化合物及重量百分数配制成实施例10的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表11液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000085
实施例11
按表12中所列的各化合物及重量百分数配制成实施例11的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表12液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000086
实施例12
按表13中所列的各化合物及重量百分数配制成实施例12的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表13液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000087
实施例13
按表14中所列的各化合物及重量百分数配制成实施例13的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表14液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000088
实施例14
按表15中所列的各化合物及重量百分数配制成实施例14的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表15液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000089
实施例15
按表16中所列的各化合物及重量百分数配制成实施例15的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表16液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000090
实施例16
按表17中所列的各化合物及重量百分数配制成实施例16的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表17液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000091
实施例17
按表18中所列的各化合物及重量百分数配制成实施例17的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表18液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000092
实施例18
按表19中所列的各化合物及重量百分数配制成实施例18的液晶组合物，其填充于液晶显示器两基板之间进行性能测试，测试数据如下表所示：
表19液晶组合物配方及其测试性能
Figure PCTCN2017095927-appb-000093
从以上实施例的测试数据可见，本发明所提供的液晶组合物具有适当高的光学各项异性、较高的光学各向异性、较低的阈值电压、合适的向列相温度范围、合适的弹性常数、较低的粘度、良好的可靠性及热稳定性，以及良好的低温互溶性，适用于IPS、TN-TFT液晶显示器中。

Claims (17)

  1. 一种液晶组合物，其特征在于，所述液晶组合物包含：
    占所述液晶组合物总重量15-30％的三种或更多种符合通式Ⅰ的化合物
    Figure PCTCN2017095927-appb-100001
    其中，
    R1表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；
    Y1和Y2相同或不同，各自独立地表示H、F，或未被卤代或被卤代的甲基或甲氧基；
    Figure PCTCN2017095927-appb-100002
    选自由
    Figure PCTCN2017095927-appb-100003
    Figure PCTCN2017095927-appb-100004
    和
    Figure PCTCN2017095927-appb-100005
    组成的组；
    Figure PCTCN2017095927-appb-100006
    选自由
    Figure PCTCN2017095927-appb-100007
    Figure PCTCN2017095927-appb-100008
    和
    Figure PCTCN2017095927-appb-100009
    组成的组；
    X1表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基；
    其中，所述三种或更多种符合通式Ⅰ的化合物包含至少两种通式Ⅰ-1的化合物，
    Figure PCTCN2017095927-appb-100010
    R1、Y1、Y2和X1如通式Ⅰ中的定义；
    其中，所述至少两种符合通式Ⅰ-1的化合物的总量占所述液晶组合物的总重量不低于10％，且其中每一种符合通式Ⅰ-1的化合物的含量不高于8％。
  2. 根据权利要求1所述的液晶组合物，其特征在于，所述三种或更多种符合通式Ⅰ的化合物包含：
    占所述液晶组合物总重量10-30％的至少两种通式Ⅰ-1的化合物
    Figure PCTCN2017095927-appb-100011
    和
    占所述液晶组合物总重量0-15％的至少一种通式Ⅰ-2的化合物：
    Figure PCTCN2017095927-appb-100012
    其中，
    R1和R1A相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；
    Y1、Y2、Y1A和Y2A相同或不同，各自独立地表示H、F，或未被卤代或被卤代的甲基或甲氧基；
    Y3A表示H或F；
    Figure PCTCN2017095927-appb-100013
    选自由
    Figure PCTCN2017095927-appb-100014
    和
    Figure PCTCN2017095927-appb-100015
    组成的组；且当
    Figure PCTCN2017095927-appb-100016
    为
    Figure PCTCN2017095927-appb-100017
    时，Y3A表示H；
    X1和X1A相同或不同，各自独立地表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
  3. 根据权利要求1或2所述的液晶组合物，其特征在于，所述R1和所述R1A相同或不同，各自独立地表示碳原子数为1-5的烷基，Y1、Y2、Y1A、Y2A和Y3A相同或不同，各自独立地为H或F；X1和X1A相同或不同，各自独立地表示表示F、CF3或OCF3。
  4. 根据权利要求1-3中任一项所述的液晶组合物，其特征在于，所述液晶组合物还包含：
    占所述液晶组合物总重量10-50％的一种或多种通式Ⅱ的化合物
    Figure PCTCN2017095927-appb-100018
    其中，
    R2和R3相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基。
  5. 根据权利要求1-4中任一项所述的液晶组合物，其特征在于，所述液晶组合物还包含：
    占所述液晶组合物总重量0-50％的一种或多种选自通式Ⅲ-1的化合物、通式Ⅲ-2的化合物和通式Ⅲ-3的化合物组成的组的化合物
    Figure PCTCN2017095927-appb-100019
    其中，
    R4、R5和R6相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基；
    Y4、Y5、Y6、Y7、Y8、Y9和Y10相同或不同，各自独立地为H、F，或未被卤代或被卤代的甲基或甲氧基；
    X2表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
  6. 根据权利要求1-5中任一项所述的液晶组合物，其特征在于，所述液晶组合物还包含：
    占所述液晶组合物总重量0-30％的一种或多种选自通式Ⅳ的化合物
    Figure PCTCN2017095927-appb-100020
    其中，
    R7表示碳原子数为1-5的烷基；
    Y11和Y12相同或不同，各自独立地表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基；
    Figure PCTCN2017095927-appb-100021
    选自由
    Figure PCTCN2017095927-appb-100022
    Figure PCTCN2017095927-appb-100023
    和
    Figure PCTCN2017095927-appb-100024
    组成的组；
    X3表示F、Cl，或未被卤代或被卤代的碳原子数为1-5的烷基或烷氧基。
  7. 根据权利要求1-6中任一项所述的液晶组合物，其特征在于，所述通式Ⅰ-1的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100025
    以及
    Figure PCTCN2017095927-appb-100026
    并且
    所述通式Ⅰ-2的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100027
    Figure PCTCN2017095927-appb-100028
    以及
    Figure PCTCN2017095927-appb-100029
  8. 根据权利要求3所述的液晶组合物，其特征在于，所述通式Ⅱ的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100030
    Figure PCTCN2017095927-appb-100031
    以及
    Figure PCTCN2017095927-appb-100032
  9. 根据权利要求4所述的液晶组合物，其特征在于，所述通式Ⅲ-1的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100033
    Figure PCTCN2017095927-appb-100034
    以及
    Figure PCTCN2017095927-appb-100035
    所述通式Ⅲ-2的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100036
    以及
    Figure PCTCN2017095927-appb-100037
    并且
    所述通式Ⅲ-3的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100038
    Figure PCTCN2017095927-appb-100039
    以及
    Figure PCTCN2017095927-appb-100040
  10. 根据权利要求6所述的液晶组合物，其特征在于，所述通式Ⅳ的化合物选自由如下化合物组成的组：
    Figure PCTCN2017095927-appb-100041
    Figure PCTCN2017095927-appb-100042
    以及
    Figure PCTCN2017095927-appb-100043
  11. 根据权利要求1至10中任一项所述的液晶组合物，其特征在于，所述液晶组合物还包含：
    占所述液晶组合物总重量0-40％的一种或多种选自由式Ⅴ-1至式Ⅴ-8化合物组成的组中的化合物
    Figure PCTCN2017095927-appb-100044
    以及
    Figure PCTCN2017095927-appb-100045
    其中，
    R8和R9相同或不同，各自独立地表示碳原子数为1-5的烷基或烷氧基，或碳原子数为2-5的烯基或烯氧基。
  12. 根据权利要求11所述的液晶组合物，其特征在于，所述通式Ⅰ的化合物占所述液晶组合物总重量的15-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的15-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的0-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的0-30％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的0-40％。
  13. 根据权利要求12所述的液晶组合物，其特征在于，以所述液晶组合物总重量计，所述液晶组合物包含：
    6％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    6％的化合物Ⅰ-1-2；
    6％的化合物Ⅰ-1-3；
    6％的化合物Ⅰ-1-4；
    5％的化合物Ⅰ-1-8；
    3％的化合物Ⅰ-1-9；
    2％的化合物Ⅲ-1-1；
    8％的化合物Ⅲ-1-2；
    3％的化合物Ⅲ-1-3；
    5％的化合物Ⅲ-1-4；
    9％的化合物Ⅲ-1-10；以及
    33％的化合物Ⅱ-6；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    8％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    5％的化合物Ⅰ-1-2；
    5％的化合物Ⅰ-1-3；
    5％的化合物Ⅰ-1-4；
    3％的化合物Ⅰ-1-8；
    4％的化合物Ⅰ-1-9；
    10％的化合物Ⅲ-1-2；
    8％的化合物Ⅲ-1-3；
    15％的化合物Ⅲ-1-10；以及
    29％的化合物Ⅱ-6；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    6.5％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    6％的化合物Ⅰ-1-2；
    6％的化合物Ⅰ-1-3；
    6％的化合物Ⅰ-1-4；
    5％的化合物Ⅰ-1-8；
    2.5％的化合物Ⅰ-1-9；
    4.5％的化合物Ⅲ-1-1；
    7％的化合物Ⅲ-1-2；
    5％的化合物Ⅲ-1-3；
    10％的化合物Ⅲ-1-10；
    1.5％的化合物Ⅴ-6；
    22％的化合物Ⅱ-6；以及
    10％的化合物Ⅱ-2；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    3％的化合物Ⅰ-1-1；
    4％的化合物Ⅰ-1-2；
    3％的化合物Ⅰ-1-3；
    5％的化合物Ⅰ-2-7；
    8％的化合物Ⅳ-10；
    14％的化合物Ⅳ-11；
    6％的化合物Ⅳ-2；
    4％的化合物Ⅲ-1-5；
    8％的化合物Ⅲ-1-6；
    4％的化合物Ⅲ-3-2；
    4％的化合物Ⅲ-3-3；
    4％的化合物Ⅴ-3；
    28％的化合物Ⅱ-6；以及
    5％的化合物Ⅴ-7；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    3％的化合物Ⅰ-1-8；
    4％的化合物Ⅰ-1-9；
    4％的化合物Ⅰ-1-10；
    5％的化合物Ⅰ-2-12；
    8％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    4％的化合物Ⅳ-7；
    4％的化合物Ⅳ-4；
    6％的化合物Ⅲ-1-6；
    6％的化合物Ⅲ-3-2；
    6％的化合物Ⅲ-2-5；
    9％的化合物Ⅴ-3；
    30％的化合物Ⅱ-6；以及
    3％的化合物Ⅴ-6；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    5％的化合物Ⅰ-1-1；
    5％的化合物Ⅰ-1-2；
    5％的化合物Ⅰ-1-3；
    10％的化合物Ⅳ-10；
    16％的化合物Ⅳ-11；
    6％的化合物Ⅲ-1-2；
    4％的化合物Ⅲ-1-3；
    8％的化合物Ⅲ-1-10；
    6％的化合物Ⅴ-4；
    25％的化合物Ⅱ-6；
    6％的化合物Ⅴ-1；以及
    4％的化合物Ⅴ-6；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    4％的化合物Ⅰ-1-5；
    4％的化合物Ⅰ-1-6；
    4％的化合物Ⅰ-1-7；
    3％的化合物Ⅰ-2-5；
    3％的化合物Ⅰ-2-2；
    8％的化合物Ⅳ-11；
    6％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    6％的化合物Ⅲ-1-6；
    5％的化合物Ⅲ-1-8；
    28％的化合物Ⅱ-6；
    5％的化合物Ⅱ-7；
    5％的化合物Ⅴ-2；
    3％的化合物Ⅴ-6；
    4％的化合物Ⅴ-5；以及
    4％的化合物Ⅴ-8；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    4％的化合物Ⅰ-1-1；
    4％的化合物Ⅰ-1-2；
    4％的化合物Ⅰ-1-3；
    4％的化合物Ⅰ-1-9；
    4％的化合物Ⅰ-2-11；
    8％的化合物Ⅳ-1；
    11％的化合物Ⅳ-2；
    4％的化合物Ⅲ-3-1；
    4％的化合物Ⅲ-1-1；
    6％的化合物Ⅲ-1-2；
    6％的化合物Ⅲ-1-3；
    4％的化合物Ⅴ-3；
    29％的化合物Ⅱ-6；
    6％的化合物Ⅱ-9；以及
    2％的化合物Ⅴ-7；
    或者，所述液晶组合物包含：
    5％的化合物Ⅰ-1-8；
    5％的化合物Ⅰ-1-9；
    5％的化合物Ⅰ-1-10；
    5％的化合物Ⅰ-1-11；
    2％的化合物Ⅰ-2-15；
    6％的化合物Ⅳ-10；
    10％的化合物Ⅳ-11；
    6％的化合物Ⅲ-1-4；
    9％的化合物Ⅲ-1-9；
    10％的化合物Ⅲ-1-10；
    31％的化合物Ⅱ-6；
    3％的化合物Ⅴ-8；以及
    3％的化合物Ⅴ-8；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    4％的化合物Ⅰ-1-1；
    4％的化合物Ⅰ-1-2；
    3％的化合物Ⅰ-1-8；
    4％的化合物Ⅰ-1-9；
    3％的化合物Ⅰ-1-10；
    3％的化合物Ⅰ-2-7；
    4％的化合物Ⅰ-2-8；
    3％的化合物Ⅳ-10；
    3％的化合物Ⅳ-11；
    3％的化合物Ⅳ-7；
    3％的化合物Ⅳ-4；
    12％的化合物Ⅴ-3；
    30％的化合物Ⅱ-6；
    10％的化合物Ⅱ-7；
    8％的化合物Ⅴ-2；以及
    3％的化合物Ⅴ-8；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    6％的化合物Ⅰ-1-8；
    8％的化合物Ⅰ-1-9；
    8％的化合物Ⅰ-1-10；
    5％的化合物Ⅰ-2-2；
    10％的化合物Ⅳ-11；
    5％的化合物Ⅴ-4；
    8％的化合物Ⅴ-3；
    23％的化合物Ⅱ-6；
    8％的化合物Ⅴ-1；
    7％的化合物Ⅴ-1；
    3％的化合物Ⅴ-6；
    3％的化合物Ⅴ-6；
    2％的化合物Ⅴ-5；
    2％的化合物Ⅴ-5；以及
    2％的化合物Ⅴ-5；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    5％的化合物Ⅰ-1-2；
    4％的化合物Ⅰ-1-3；
    4％的化合物Ⅰ-1-9；
    4％的化合物Ⅰ-1-10；
    4％的化合物Ⅰ-1-6；
    4％的化合物Ⅰ-1-7；
    3％的化合物Ⅰ-2-15；
    8％的化合物Ⅴ-3；
    10％的化合物Ⅴ-3；
    40％的化合物Ⅱ-6；
    8％的化合物Ⅱ-7；以及
    6％的化合物Ⅴ-1；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    3％的化合物Ⅰ-1-9；
    2％的化合物Ⅰ-1-10；
    2％的化合物Ⅰ-1-5；
    3％的化合物Ⅰ-1-6；
    4％的化合物Ⅰ-2-7；
    4％的化合物Ⅰ-2-8；
    7％的化合物Ⅰ-2-2；
    8％的化合物Ⅳ-2；
    8％的化合物Ⅲ-1-6；
    7％的化合物Ⅲ-1-7；
    4％的化合物Ⅲ-3-1；
    4％的化合物Ⅲ-3-2；
    3％的化合物Ⅲ-2-3；
    33％的化合物Ⅱ-6；
    4％的化合物Ⅱ-2；
    2％的化合物Ⅴ-3；以及
    2％的化合物Ⅴ-8；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    3％的化合物Ⅰ-1-8；
    4％的化合物Ⅰ-1-9；
    3％的化合物Ⅰ-1-5；
    4％的化合物Ⅰ-1-6；
    5％的化合物Ⅰ-2-7；
    5％的化合物Ⅰ-2-8；
    6％的化合物Ⅳ-1；
    8％的化合物Ⅳ-2；
    4％的化合物Ⅲ-1-1；
    6％的化合物Ⅲ-1-2；
    6％的化合物Ⅲ-1-3；
    5％的化合物Ⅲ-1-4；
    25％的化合物Ⅱ-6；
    8％的化合物Ⅱ-3；以及
    8％的化合物Ⅱ-4；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    5％的化合物Ⅰ-1-1；
    5％的化合物Ⅰ-1-2；
    5％的化合物Ⅰ-1-3；
    5％的化合物Ⅰ-1-8；
    5％的化合物Ⅰ-1-9；
    5％的化合物Ⅰ-1-10；
    6％的化合物Ⅳ-1；
    6％的化合物Ⅳ-2；
    8％的化合物Ⅲ-1-2；
    7％的化合物Ⅲ-1-3；
    6％的化合物Ⅲ-1-9；
    7％的化合物Ⅲ-1-10；
    20％的化合物Ⅱ-6；
    6％的化合物Ⅱ-2；以及
    4％的化合物Ⅱ-5；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    6％的化合物Ⅰ-1-1；
    6％的化合物Ⅰ-1-2；
    6％的化合物Ⅰ-1-3；
    3％的化合物Ⅰ-1-6；
    3％的化合物Ⅰ-1-7；
    4％的化合物Ⅳ-2；
    5％的化合物Ⅴ-3；
    5％的化合物Ⅴ-3；
    5％的化合物Ⅴ-4；
    35％的化合物Ⅱ-6；
    6％的化合物Ⅱ-9；
    8％的化合物Ⅴ-1；
    6％的化合物Ⅴ-2；以及
    2％的化合物Ⅴ-5；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    7％的化合物Ⅰ-1-2；
    7％的化合物Ⅰ-1-3；
    6％的化合物Ⅰ-1-5；
    7％的化合物Ⅰ-1-6；
    2％的化合物Ⅰ-2-2；
    3％的化合物Ⅳ-7；
    3％的化合物Ⅳ-4；
    3％的化合物Ⅲ-3-2；
    2％的化合物Ⅲ-3-4；
    11％的化合物Ⅲ-2-5；
    5％的化合物Ⅲ-2-7；
    24％的化合物Ⅱ-6；
    12％的化合物Ⅱ-2；以及
    8％的化合物Ⅱ-3；
    或者，以所述液晶组合物总重量计，所述液晶组合物包含：
    3％的化合物Ⅰ-1-1；
    3％的化合物Ⅰ-1-2；
    3％的化合物Ⅰ-1-3；
    6％的化合物Ⅰ-1-8；
    8％的化合物Ⅰ-1-9；
    7％的化合物Ⅰ-1-10；
    6％的化合物Ⅲ-1-2；
    6％的化合物Ⅲ-1-3；
    5％的化合物Ⅲ-1-9；
    39％的化合物Ⅱ-6；
    6％的化合物Ⅱ-8；
    3％的化合物Ⅴ-5；
    3％的化合物Ⅴ-5；以及
    2％的化合物Ⅴ-5。
  14. 根据权利要求12所述的液晶组合物，其特征在于，所述通式Ⅰ的化合物占所述 液晶组合物总重量的20-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的20-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的5-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的5-30％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的4-40％。
  15. 根据权利要求14所述的液晶组合物，其特征在于，所述通式Ⅰ的化合物占所述液晶组合物总重量的20-30％；所述通式Ⅱ的化合物占所述液晶组合物总重量的25-48％；所述通式Ⅲ-1、通式Ⅲ-2、Ⅲ-3及其组合组成的组的化合物占所述液晶组合物总重量的15-33％；所述通式Ⅳ的化合物占所述液晶组合物总重量的5-20％；以及所述通式Ⅴ-1至Ⅴ-8化合物占所述液晶组合物总重量的4-31％。
  16. 根据权利要求1-15中任一项所述的液晶组合物，其特征在于，所述液晶组合物还包含一种或多种添加剂。
  17. 一种液晶显示器件，包含权利要求1-16中的任一项所述的液晶组合物。
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