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CN109575944B - Liquid crystal composition and liquid crystal display device thereof - Google Patents

Liquid crystal composition and liquid crystal display device thereof Download PDF

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CN109575944B
CN109575944B CN201710894391.XA CN201710894391A CN109575944B CN 109575944 B CN109575944 B CN 109575944B CN 201710894391 A CN201710894391 A CN 201710894391A CN 109575944 B CN109575944 B CN 109575944B
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CN109575944A (en
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刘云云
徐海彬
李鹏飞
贺笛
王宇
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Jiangsu Hecheng Display Technology Co Ltd
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    • C09K19/00—Liquid crystal materials
    • C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
    • C09K19/42—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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Abstract

The invention discloses a liquid crystal composition and a liquid crystal display device thereof, wherein the liquid crystal composition comprises: at least one compound of the formula IA compound, and at least one compound of formula II. The liquid crystal composition provided by the invention has suitable optical anisotropy, high clearing point, relatively large dielectric anisotropy, lower threshold voltage and better low-temperature storage property, and when the liquid crystal composition is applied to a liquid crystal display, the power consumption can be reduced, the response time can be shortened, and the contrast can be increased.

Description

液晶组合物及其液晶显示器件Liquid crystal composition and liquid crystal display device thereof

技术领域technical field

本发明涉及液晶材料领域，具体涉及一种液晶组合物及其液晶显示器件。The invention relates to the field of liquid crystal materials, in particular to a liquid crystal composition and a liquid crystal display device thereof.

背景技术Background technique

液晶显示器(Liquid Crystal Display，LCD)因其体积小、重量轻、功耗低且显示质量优异而获得了飞速发展，特别在便携式电子信息产品中获得广泛的应用。随着用于便携式计算机、办公应用、视频应用的液晶屏幕尺寸的增加，液晶显示器能够用于大屏幕显示并最终替代了阴极射线管的显示器(Cathode Ray Tube，CRT)。Liquid Crystal Display (LCD) has achieved rapid development due to its small size, light weight, low power consumption and excellent display quality, and is especially widely used in portable electronic information products. As the size of liquid crystal screens for portable computers, office applications, and video applications increases, liquid crystal displays can be used for large screen displays and eventually replace cathode ray tube (CRT) displays.

根据显示模式的类型分为PC(phase change，相变)、TN(twist nematic，扭曲向列)、STN(super twisted nematic，超扭曲向列)、ECB(electrically controlledbirefringence，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。According to the type of display mode, it is divided into PC (phase change, phase change), TN (twist nematic, twisted nematic), STN (super twisted nematic, super twisted nematic), ECB (electrically controlled birefringence, electronically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching, coplanar transition), VA (vertical alignment, vertical alignment) and other types.

液晶材料必须具有良好的低温互溶性和热稳定性。此外，液晶材料应当具有低粘度和短响应时间，低阈值电压和高对比度。为了获得具有良好特性的液晶显示元件，而提高液晶组合物的各项性能指标，我们将液晶组合物的一种性能对应液晶显示元件相应的一种性能的关联，总结于下述表1中。根据市售的液晶显示元件来进一步说明组合物的各项性能指标。向列相的温度范围与元件的工作温度范围相关联。向列相的上限温度较好的是大于等于70℃，并且向列相的下限温度较好的是小于等于-10℃。组合物的粘度与元件的响应时间相关联。为了在元件中显示动画，较好的是元件的响应时间短。因此，较好的是组合物的粘度小，而更好的是温度低时组合物的粘度小。Liquid crystal materials must have good low temperature mutual solubility and thermal stability. Furthermore, the liquid crystal material should have low viscosity and short response time, low threshold voltage and high contrast. In order to obtain a liquid crystal display element with good characteristics and improve various performance indicators of the liquid crystal composition, we summarize the correlation between one performance of the liquid crystal composition and a corresponding performance of the liquid crystal display element in Table 1 below. Various performance indexes of the composition are further explained according to the commercially available liquid crystal display elements. The temperature range of the nematic phase correlates with the operating temperature range of the element. The upper limit temperature of the nematic phase is preferably 70°C or higher, and the lower limit temperature of the nematic phase is preferably -10°C or lower. The viscosity of the composition correlates to the response time of the element. In order to display animations in a component, it is preferable for the component to have a short response time. Therefore, it is preferable that the viscosity of the composition is low, and it is more preferable that the viscosity of the composition is low when the temperature is low.

表1.组合物与液晶显示元件的一般特性Table 1. General properties of compositions and liquid crystal display elements

NO.NO. 组合物的一般特性General characteristics of the composition 液晶显示元件的一般特性General characteristics of liquid crystal display elements 11 向列相的温度范围广Wide temperature range for nematic phase 可使用的温度范围广Wide temperature range available 22 粘度小low viscosity 响应时间短short response time 33 光学各向异性适当Optical anisotropy is appropriate 对比度大high contrast 44 正或负性介电常数各向异性大Large positive or negative dielectric constant anisotropy 临界电压低，消耗电力小，对比度大Low critical voltage, low power consumption, high contrast ratio 55 电阻率大high resistivity 电压保持率大，对比度大High voltage holding ratio and high contrast ratio 66 对紫外线及热稳定UV and heat stable 寿命长long life

组合物的光学各向异性与元件的对比度相关联。为了使液晶显示元件的对比度最大化，可将液晶组成物的光学各向异性(Δn)与液晶层的厚度(d)的乘积值(Δn*d)设定为固定值的方式进行设计。适当的乘积值依赖于运作模式的种类。如TN模式的元件的适当值约为0.45μm。该情形时，对于液晶层厚度较小的元件而言，较好的是光学各向异性大的组合物。The optical anisotropy of the composition correlates to the contrast of the element. In order to maximize the contrast ratio of the liquid crystal display element, the product (Δn*d) of the optical anisotropy (Δn) of the liquid crystal composition and the thickness (d) of the liquid crystal layer can be designed to be a fixed value. The appropriate product value depends on the kind of operation mode. A suitable value for elements such as TN mode is about 0.45 μm. In this case, a composition having a large optical anisotropy is preferable for an element having a small thickness of the liquid crystal layer.

组合物的大的介电各向异性的绝对值有助于使元件具有低的临界电压、小的消耗功率及大的对比度。因此，较好的是大的介电各向异性的绝对值。组合物的电阻率大有助于使元件具有大的电压保持率及大的对比度。因此，较好的是在初始阶段不仅是在室温下、并且在高温下亦具有较大电阻率的组合物。较好的是长时间使用后不仅在室温下、而且在高温下亦具有较大电阻率的组合物。组合物对紫外线及热的稳定性与液晶显示元件的寿命有关。组合物紫外线及热稳定性高时，元件的寿命长，此种特性对于液晶投影仪、液晶电视等中所使用的液晶显示元件而言是较好的。The large absolute value of the dielectric anisotropy of the composition contributes to the device having a low threshold voltage, low power consumption, and high contrast ratio. Therefore, a large absolute value of the dielectric anisotropy is preferred. A high resistivity of the composition contributes to a device with high voltage holding ratio and high contrast ratio. Therefore, a composition having a larger resistivity not only at room temperature but also at high temperature in the initial stage is preferred. Preferred is a composition that has a relatively high resistivity not only at room temperature but also at elevated temperature after prolonged use. The stability of the composition to ultraviolet light and heat is related to the life of the liquid crystal display element. When the composition has high ultraviolet and thermal stability, the life of the element is long, and such characteristics are preferable for liquid crystal display elements used in liquid crystal projectors, liquid crystal televisions, and the like.

较理想的液晶显示元件是具有可使用的温度范围广、响应时间短、对比度大、临界电压低、电压保持率大、寿命长等特性，较理想的是响应时间甚至短于1毫秒。因此，组合物的特性较理想的是向列相的上限温度高、向列相的下限温度低、粘度小、光学各向异性大、介电各向异性的绝对值大、电阻率大、对紫外线的稳定性高、对热的稳定性高等。The ideal liquid crystal display element has the characteristics of wide usable temperature range, short response time, high contrast ratio, low threshold voltage, high voltage holding ratio, long life and so on. The ideal response time is even shorter than 1 millisecond. Therefore, the properties of the composition are preferably high upper limit temperature of nematic phase, low minimum temperature of nematic phase, low viscosity, large optical anisotropy, large absolute value of dielectric anisotropy, high resistivity, and high relative High UV stability and high thermal stability.

发明内容SUMMARY OF THE INVENTION

发明目的：针对现有技术的缺陷，本发明的目的在于提供一种光学各向异性大、介电各向异性的绝对值大、高的清亮点、较低的阈值电压和低温存储稳定性高的液晶组合物。本发明的另一目的是提供一种包含所述液晶组合物的液晶显示器件，所述液晶显示器具有功耗低，响应时间短和对比度高等特性。Purpose of the invention: In view of the defects of the prior art, the purpose of the present invention is to provide a large optical anisotropy, a large absolute value of the dielectric anisotropy, a high clearing point, a low threshold voltage and high low temperature storage stability. liquid crystal composition. Another object of the present invention is to provide a liquid crystal display device comprising the liquid crystal composition, the liquid crystal display having the characteristics of low power consumption, short response time and high contrast ratio.

本发明的技术方案：Technical scheme of the present invention:

本发明的一个方面提供一种液晶组合物，所述液晶组合物包含：One aspect of the present invention provides a liquid crystal composition, the liquid crystal composition comprising:

至少一种通式Ⅰ的化合物at least one compound of formula I

Figure BDA0001421861000000021
Figure BDA0001421861000000021

至少一种通式Ⅱ的化合物at least one compound of general formula II

Figure BDA0001421861000000022
Figure BDA0001421861000000022

其中，in,

R1表示-H、F、含有1-12个碳原子的烷基或烷氧基、含有2-12个碳原子的烯基或烯氧基、-OR5OR6、

Figure BDA0001421861000000031
其中所述烷基或烷氧基和所述烯基或烯氧基中的一个或更多个H可以被F取代；R 1 represents -H, F, an alkyl or alkoxy group containing 1-12 carbon atoms, an alkenyl or alkenyloxy group containing 2-12 carbon atoms, -OR 5 OR 6 ,
Figure BDA0001421861000000031
wherein one or more Hs in the alkyl or alkoxy and the alkenyl or alkenyloxy may be substituted with F;

R5表示含有3-12个碳原子的亚烷基或含有3-12个碳原子的亚烯基；R 5 represents an alkylene group containing 3-12 carbon atoms or an alkenylene group containing 3-12 carbon atoms;

R6表示含有1-12个碳原子的烷基或含有2-12个碳原子的烯基；R 6 represents an alkyl group containing 1-12 carbon atoms or an alkenyl group containing 2-12 carbon atoms;

R2表示-F、含有1-12个碳原子的氟代烷基或氟代烷氧基、含有2-12个碳原子的氟代烯基或氟代烯氧基；R 2 represents -F, fluoroalkyl or fluoroalkoxy containing 1-12 carbon atoms, fluoroalkenyl or fluoroalkenyloxy containing 2-12 carbon atoms;

R3和R4各自独立地表示-H、含有1-12个碳原子的烷基或烷氧基、含有2-12个碳原子的烯基或烯氧基、-OR5OR6、

Figure BDA0001421861000000032
且R3和R4中至少一个为-OR5OR6；R 3 and R 4 each independently represent -H, an alkyl or alkoxy group containing 1-12 carbon atoms, an alkenyl or alkenyloxy group containing 2-12 carbon atoms, -OR 5 OR 6 ,
Figure BDA0001421861000000032
and at least one of R 3 and R 4 is -OR 5 OR 6 ;

Z1表示单键、-COO-、-OCO-、-CH2O-、-OCH2-、-CF2O-、-OCF2-或-CH2CH2-；Z 1 represents a single bond, -COO-, -OCO-, -CH 2 O-, -OCH 2 -, -CF 2 O-, -OCF 2 - or -CH 2 CH 2 -;

Z2表示单键、-COO-、-OCO-、-CH2O-、-OCH2-或-CH2CH2-；Z 2 represents a single bond, -COO-, -OCO-, -CH 2 O-, -OCH 2 - or -CH 2 CH 2 -;

L1、L2和L3各自独立地表示-H、-F或-CH3，且L1和L2不同时为F；L 1 , L 2 and L 3 each independently represent -H, -F or -CH 3 , and L 1 and L 2 are not F at the same time;

环

Figure BDA0001421861000000033
表示
Figure BDA0001421861000000034
其中
Figure BDA0001421861000000035
中一个或更多个-CH2-可被-O-替代，一个或更多个环中单键可被双键替代，
Figure BDA0001421861000000036
中一个或更多个H可以被卤素取代，一个或更多个环中-CH＝可被-N＝替代；ring
Figure BDA0001421861000000033
express
Figure BDA0001421861000000034
in
Figure BDA0001421861000000035
One or more -CH 2 - can be replaced by -O-, single bond can be replaced by double bond in one or more rings,
Figure BDA0001421861000000036
One or more Hs can be replaced by halogen, and -CH= can be replaced by -N= in one or more rings;

环

Figure BDA0001421861000000037
环
Figure BDA0001421861000000038
和环
Figure BDA0001421861000000039
各自独立地表示
Figure BDA00014218610000000310
Figure BDA00014218610000000311
ring
Figure BDA0001421861000000037
ring
Figure BDA0001421861000000038
and ring
Figure BDA0001421861000000039
represent independently
Figure BDA00014218610000000310
Figure BDA00014218610000000311

n表示1、2、3或4，且当n为2、3、4时，环

Figure BDA00014218610000000312
可以相同或不同，Z1可以相同或不同；n represents 1, 2, 3 or 4, and when n is 2, 3, 4, the ring
Figure BDA00014218610000000312
Can be the same or different, Z 1 can be the same or different;

m表示0、1或2，且当m为2时，环

Figure BDA00014218610000000313
可以相同或不同，Z2可以相同或不同。m represents 0, 1 or 2, and when m is 2, the ring
Figure BDA00014218610000000313
Can be the same or different, Z 2 can be the same or different.

优选地，所述通式Ⅰ的化合物选自如下化合物组成的组：Preferably, the compound of general formula I is selected from the group consisting of:

Figure BDA00014218610000000314
Figure BDA00014218610000000314

其中，in,

环

Figure BDA0001421861000000041
和环
Figure BDA0001421861000000042
各自独立地表示
Figure BDA0001421861000000043
Figure BDA0001421861000000044
ring
Figure BDA0001421861000000041
and ring
Figure BDA0001421861000000042
represent independently
Figure BDA0001421861000000043
Figure BDA0001421861000000044

n1表示0、1、2或3，且当n1为2或3时，

Figure BDA0001421861000000045
可以相同或不同。n1 represents 0, 1, 2 or 3, and when n1 is 2 or 3,
Figure BDA0001421861000000045
Can be the same or different.

进一步优选地，所述通式Ⅰ-1的化合物选自如下化合物组成的组：Further preferably, the compound of general formula I-1 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000046
Figure BDA0001421861000000046

Figure BDA0001421861000000051
Figure BDA0001421861000000051

所述通式Ⅰ-2的化合物选自如下化合物组成的组：The compound of general formula I-2 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000052
Figure BDA0001421861000000052

Figure BDA0001421861000000061
Figure BDA0001421861000000061

Figure BDA0001421861000000071
Figure BDA0001421861000000071

Figure BDA0001421861000000081
Figure BDA0001421861000000081

Figure BDA0001421861000000091
Figure BDA0001421861000000091

Figure BDA0001421861000000101
Figure BDA0001421861000000101

Figure BDA0001421861000000111
Figure BDA0001421861000000111

Figure BDA0001421861000000121
Figure BDA0001421861000000121

其中，in,

R11表示-H、-F、含有1-7个碳原子的烷基或烷氧基、含有2-7个碳原子的烯基或烯氧基、-OR5OR6，其中所述烷基或烷氧基和所述烯基或烯氧基中的一个或更多个H可以被F取代；R 11 represents -H, -F, an alkyl or alkoxy group containing 1-7 carbon atoms, an alkenyl or alkenyloxy group containing 2-7 carbon atoms, -OR 5 OR 6 , wherein the alkyl group or alkoxy and one or more H in said alkenyl or alkenyloxy may be substituted with F;

R21表示-F、含有1-7个碳原子的氟代烷基或氟代烷氧基、含有2-7个碳原子的氟代烯基或氟代烯氧基。R 21 represents -F, a fluoroalkyl group or a fluoroalkoxy group having 1 to 7 carbon atoms, a fluoroalkenyl group or a fluoroalkenyloxy group having 2 to 7 carbon atoms.

在本发明的一些实施方案中，所述通式Ⅰ的化合物占所述液晶组合物总重量的1-60％；进一步优选地，所述通式Ⅰ的化合物占所述液晶组合物总重量的5-50％；再进一步优选地，所述通式Ⅰ的化合物占所述液晶组合物总重量的15-40％。In some embodiments of the present invention, the compound of the general formula I accounts for 1-60% of the total weight of the liquid crystal composition; further preferably, the compound of the general formula I accounts for the total weight of the liquid crystal composition. 5-50%; further preferably, the compound of general formula I accounts for 15-40% of the total weight of the liquid crystal composition.

优选地，所述通式Ⅱ的化合物选自如下化合物组成的组：Preferably, the compound of general formula II is selected from the group consisting of:

Figure BDA0001421861000000122
Figure BDA0001421861000000122

Figure BDA0001421861000000131
Figure BDA0001421861000000131

其中，in,

R31和R41各自独立地表示H、含有1-7个碳原子的烷基或烷氧基、含有2-7个碳原子的烯基或烯氧基、-OR51OR61、

Figure BDA0001421861000000132
且R31和R41中至少一个为-OR51OR61；R 31 and R 41 each independently represent H, an alkyl or alkoxy group containing 1-7 carbon atoms, an alkenyl or alkenyloxy group containing 2-7 carbon atoms, -OR 51 OR 61 ,
Figure BDA0001421861000000132
and at least one of R 31 and R 41 is -OR 51 OR 61 ;

R51表示含有3-10个碳原子的亚烷基或含有3-10个碳原子的亚烯基；R 51 represents an alkylene group containing 3-10 carbon atoms or an alkenylene group containing 3-10 carbon atoms;

R61表示含有1-10个碳原子的烷基或含有2-10个碳原子的烯基。R 61 represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms.

在本发明的一些实施方案中，优选地，所述通式Ⅱ-1的化合物选自由如下化合物组成的组：In some embodiments of the present invention, preferably, the compound of general formula II-1 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000133
Figure BDA0001421861000000133

Figure BDA0001421861000000134
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-；
Figure BDA0001421861000000134
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -;

Figure BDA0001421861000000135
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-或-(CH2)4-；
Figure BDA0001421861000000135
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 - or -(CH 2 ) 4 -;

Figure BDA0001421861000000136
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-或-(CH2)5-；
Figure BDA0001421861000000136
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 - or -(CH 2 ) 5 -;

Figure BDA0001421861000000141
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-或-(CH2)6-；
Figure BDA0001421861000000141
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 - or -(CH 2 ) 6 -;

Figure BDA0001421861000000142
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6-及-(CH2)8-；
Figure BDA0001421861000000142
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 -, -(CH 2 ) 6 - and - (CH 2 ) 8 -;

所述通式Ⅱ-2的化合物选自由如下化合物组成的组：The compound of general formula II-2 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000143
Figure BDA0001421861000000143

所述通式Ⅱ-3的化合物选自由如下化合物组成的组：The compound of general formula II-3 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000144
Figure BDA0001421861000000144

Figure BDA0001421861000000145
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-；
Figure BDA0001421861000000146
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-或-(CH2)4-；
Figure BDA0001421861000000145
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -;
Figure BDA0001421861000000146
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 - or -(CH 2 ) 4 -;

Figure BDA0001421861000000147
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-或-(CH2)5-；
Figure BDA0001421861000000147
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 - or -(CH 2 ) 5 -;

Figure BDA0001421861000000148
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-或-(CH2)6-；
Figure BDA0001421861000000148
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 - or -(CH 2 ) 6 -;

Figure BDA0001421861000000149
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6-及-(CH2)8-；
Figure BDA0001421861000000149
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 -, -(CH 2 ) 6 - and - (CH 2 ) 8 -;

所述通式Ⅱ-4的化合物选自由如下化合物组成的组：The compound of general formula II-4 is selected from the group consisting of the following compounds:

Figure BDA00014218610000001410
Figure BDA00014218610000001410

Figure BDA0001421861000000151
Figure BDA0001421861000000151

所述通式Ⅱ-5的化合物选自由如下化合物组成的组：The compound of general formula II-5 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000152
Figure BDA0001421861000000152

所述通式Ⅱ-6的化合物选自由如下化合物组成的组：The compound of general formula II-6 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000153
Figure BDA0001421861000000153

所述通式Ⅱ-7的化合物选自由如下化合物组成的组：The compound of general formula II-7 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000154
Figure BDA0001421861000000154

Figure BDA0001421861000000155
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-；
Figure BDA0001421861000000155
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -;

Figure BDA0001421861000000156
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-或-(CH2)4-；
Figure BDA0001421861000000156
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 - or -(CH 2 ) 4 -;

Figure BDA0001421861000000157
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-或-(CH2)5-；
Figure BDA0001421861000000157
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 - or -(CH 2 ) 5 -;

Figure BDA0001421861000000161
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-或-(CH2)6-；
Figure BDA0001421861000000161
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 - or -(CH 2 ) 6 -;

Figure BDA0001421861000000162
其中，若R31表示-OR51OR61，则R51不为-(CH2)3-、-(CH2)4-、-(CH2)5-、-(CH2)6-及-(CH2)8-，
Figure BDA0001421861000000162
Wherein, if R 31 represents -OR 51 OR 61 , then R 51 is not -(CH 2 ) 3 -, -(CH 2 ) 4 -, -(CH 2 ) 5 -, -(CH 2 ) 6 - and - (CH 2 ) 8 -,

所述通式Ⅱ-8的化合物选自由如下化合物组成的组：The compound of general formula II-8 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000163
Figure BDA0001421861000000163

所述通式Ⅱ-9的化合物选自由如下化合物组成的组：The compound of general formula II-9 is selected from the group consisting of:

Figure BDA0001421861000000164
Figure BDA0001421861000000164

所述通式Ⅱ-10的化合物选自由如下化合物组成的组：The compound of general formula II-10 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000165
Figure BDA0001421861000000165

Figure BDA0001421861000000171
Figure BDA0001421861000000171

所述通式Ⅱ-11的化合物选自由如下化合物组成的组：The compound of general formula II-11 is selected from the group consisting of:

Figure BDA0001421861000000172
Figure BDA0001421861000000172

Figure BDA0001421861000000181
Figure BDA0001421861000000181

所述通式Ⅱ-12的化合物选自由如下化合物组成的组：The compound of general formula II-12 is selected from the group consisting of:

Figure BDA0001421861000000182
Figure BDA0001421861000000182

Figure BDA0001421861000000191
Figure BDA0001421861000000191

所述通式Ⅱ-13的化合物选自由如下化合物组成的组：The compound of general formula II-13 is selected from the group consisting of:

Figure BDA0001421861000000192
Figure BDA0001421861000000192

所述通式Ⅱ-14的化合物选自由如下化合物组成的组：The compound of general formula II-14 is selected from the group consisting of:

Figure BDA0001421861000000193
Figure BDA0001421861000000193

Figure BDA0001421861000000201
Figure BDA0001421861000000201

所述通式Ⅱ-15的化合物选自由如下化合物组成的组：The compound of general formula II-15 is selected from the group consisting of:

Figure BDA0001421861000000202
Figure BDA0001421861000000202

所述通式Ⅱ-16的化合物选自由如下化合物组成的组：The compound of general formula II-16 is selected from the group consisting of:

Figure BDA0001421861000000203
Figure BDA0001421861000000203

Figure BDA0001421861000000211
Figure BDA0001421861000000211

进一步的，所述液晶组合物还包含至少一种通式Ⅲ的化合物Further, the liquid crystal composition further comprises at least one compound of general formula III

Figure BDA0001421861000000212
Figure BDA0001421861000000212

其中，in,

R3’和R4’各自独立地表示-H、含有1-12个碳原子的烷基或烷氧基、含有2-12个碳原子的烯基或烯氧基、

Figure BDA0001421861000000213
R 3 ' and R 4 ' each independently represent -H, an alkyl or alkoxy group containing 1-12 carbon atoms, an alkenyl or alkenyloxy group containing 2-12 carbon atoms,
Figure BDA0001421861000000213

环

Figure BDA0001421861000000214
环
Figure BDA0001421861000000215
和环
Figure BDA0001421861000000216
各自独立地表示
Figure BDA0001421861000000217
Figure BDA0001421861000000218
ring
Figure BDA0001421861000000214
ring
Figure BDA0001421861000000215
and ring
Figure BDA0001421861000000216
represent independently
Figure BDA0001421861000000217
Figure BDA0001421861000000218

Z3’各自独立地表示单键、-COO-、-OCO-、-CH2O-、-OCH2-或-CH2CH2-；Z 3 ' each independently represents a single bond, -COO-, -OCO-, -CH 2 O-, -OCH 2 - or -CH 2 CH 2 -;

m'表示0、1或2，且当m'为2时，环

Figure BDA0001421861000000219
可以相同或不同，Z3’可以相同或不同。m' represents 0, 1 or 2, and when m' is 2, the ring
Figure BDA0001421861000000219
may be the same or different, and Z 3 ' may be the same or different.

在本发明的一些实施方案中，所述通式Ⅱ的化合物占所述液晶组合物总重量的1-70％；进一步优选地，所述通式Ⅱ的化合物占所述液晶组合物总重量的5-60％；再进一步优选地，所述通式Ⅱ的化合物占所述液晶组合物总重量的10-45％。In some embodiments of the present invention, the compound of the general formula II accounts for 1-70% of the total weight of the liquid crystal composition; further preferably, the compound of the general formula II accounts for the total weight of the liquid crystal composition. 5-60%; further preferably, the compound of the general formula II accounts for 10-45% of the total weight of the liquid crystal composition.

优选地，所述通式Ⅲ的化合物选自如下化合物组成的组：Preferably, the compound of general formula III is selected from the group consisting of the following compounds:

Figure BDA0001421861000000221
Figure BDA0001421861000000221

其中，in,

R31’和R41’各自独立地表示H、含有1-7个碳原子的烷基或烷氧基、含有2-7个碳原子的烯基或烯氧基、

Figure BDA0001421861000000222
R 31 ' and R 41 ' each independently represent H, an alkyl or alkoxy group containing 1-7 carbon atoms, an alkenyl or alkenyloxy group containing 2-7 carbon atoms,
Figure BDA0001421861000000222

在本发明的一些实施方案中，R31’和R41’中至少一个为含有2-7个碳原子的烯基或烯氧基。In some embodiments of the present invention, at least one of R 31 ′ and R 41 ′ is an alkenyl or alkenyloxy group containing 2-7 carbon atoms.

在本发明的一些实施方案中，优选地，所述通式Ⅲ-1的化合物选自由如下化合物组成的组：In some embodiments of the present invention, preferably, the compound of general formula III-1 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000231
Figure BDA0001421861000000231

所述通式Ⅲ-2的化合物选自由如下化合物组成的组：The compound of general formula III-2 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000232
Figure BDA0001421861000000232

Figure BDA0001421861000000241
Figure BDA0001421861000000241

所述通式Ⅲ-3的化合物选自由如下化合物组成的组：The compound of general formula III-3 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000242
Figure BDA0001421861000000242

所述通式Ⅲ-4的化合物选自由如下化合物组成的组：The compound of general formula III-4 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000251
Figure BDA0001421861000000251

所述通式Ⅲ-5的化合物选自由如下化合物组成的组：The compound of general formula III-5 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000252
Figure BDA0001421861000000252

所述通式Ⅲ-6的化合物选自由如下化合物组成的组：The compound of general formula III-6 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000253
Figure BDA0001421861000000253

Figure BDA0001421861000000261
Figure BDA0001421861000000261

所述通式Ⅲ-7的化合物选自由如下化合物组成的组：The compound of general formula III-7 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000262
Figure BDA0001421861000000262

所述通式Ⅲ-8的化合物选自由如下化合物组成的组：The compound of general formula III-8 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000263
Figure BDA0001421861000000263

所述通式Ⅲ-9的化合物选自由如下化合物组成的组：The compound of general formula III-9 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000264
Figure BDA0001421861000000264

所述通式Ⅲ-10的化合物选自由如下化合物组成的组：The compound of general formula III-10 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000271
Figure BDA0001421861000000271

所述通式Ⅲ-11的化合物选自由如下化合物组成的组：The compound of general formula III-11 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000281
Figure BDA0001421861000000281

所述通式Ⅲ-12的化合物选自由如下化合物组成的组：The compound of general formula III-12 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000282
Figure BDA0001421861000000282

Figure BDA0001421861000000291
Figure BDA0001421861000000291

所述通式Ⅲ-13的化合物选自由如下化合物组成的组：The compound of general formula III-13 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000292
Figure BDA0001421861000000292

Figure BDA0001421861000000301
Figure BDA0001421861000000301

所述通式Ⅲ-14的化合物选自由如下化合物组成的组：The compound of general formula III-14 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000302
Figure BDA0001421861000000302

Figure BDA0001421861000000311
Figure BDA0001421861000000311

所述通式Ⅲ-15的化合物选自由如下化合物组成的组：The compound of general formula III-15 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000312
Figure BDA0001421861000000312

Figure BDA0001421861000000321
Figure BDA0001421861000000321

所述通式Ⅲ-16的化合物选自由如下化合物组成的组：The compound of general formula III-16 is selected from the group consisting of the following compounds:

Figure BDA0001421861000000322
Figure BDA0001421861000000322

Figure BDA0001421861000000331
Figure BDA0001421861000000331

在本发明的一些实施方案中，所述通式Ⅰ的化合物优选自以下化合物：I-1-1、I-1-2、I-1-3、I-1-6、I-1-9、I-1-13、I-2-1、I-2-2、I-2-4、1-2-7、1-2-14、1-2-28、1-2-44、1-2-55和I-2-63组成的组。In some embodiments of the present invention, the compound of general formula I is preferably selected from the following compounds: I-1-1, I-1-2, I-1-3, I-1-6, I-1-9 , I-1-13, I-2-1, I-2-2, I-2-4, 1-2-7, 1-2-14, 1-2-28, 1-2-44, 1 - Group of 2-55 and I-2-63.

在本发明的一些实施方案中，所述通式Ⅱ的化合物优选自以下化合物：II-1-1、II-2-1、II-2-2、II-3-1、II-3-2、II-5-1、II-5-2、II-5-8、II-5-9、II-6-2、II-8-1、II-8-2、II-8-3、II-8-8、II-8-9、II-10-1、II-10-2、II-12-2、II-12-3、II-13-1、II-13-2、II-14-2、II-14-3、II-15-2、II-15-3、II-16-1和II-16-2组成的组。In some embodiments of the present invention, the compound of general formula II is preferably selected from the following compounds: II-1-1, II-2-1, II-2-2, II-3-1, II-3-2 , II-5-1, II-5-2, II-5-8, II-5-9, II-6-2, II-8-1, II-8-2, II-8-3, II -8-8, II-8-9, II-10-1, II-10-2, II-12-2, II-12-3, II-13-1, II-13-2, II-14 -2, II-14-3, II-15-2, II-15-3, II-16-1 and II-16-2.

在本发明的一些实施方案中，所述通式Ⅲ的化合物优选自以下化合物：Ⅲ-1-15、Ⅲ-1-19、Ⅲ-2-2、Ⅲ-2-11、Ⅲ-5-2、Ⅲ-5-4、III-5-15、III-6-2、III-6-5、III-6-11、III-9-5和Ⅲ-12-2组成的组。In some embodiments of the present invention, the compound of general formula III is preferably selected from the following compounds: III-1-15, III-1-19, III-2-2, III-2-11, III-5-2 , III-5-4, III-5-15, III-6-2, III-6-5, III-6-11, III-9-5 and III-12-2.

在本发明的一些实施方案中，所述通式Ⅰ的化合物占所述液晶组合物总重量的5-50％，所述通式Ⅱ的化合物占所述液晶组合物总重量的5-60％，所述通式Ⅲ占所述液晶组合物总重量的0-70％。In some embodiments of the present invention, the compound of general formula I accounts for 5-50% of the total weight of the liquid crystal composition, and the compound of general formula II accounts for 5-60% of the total weight of the liquid crystal composition , the general formula III accounts for 0-70% of the total weight of the liquid crystal composition.

在本发明的一些实施方案中，所述通式Ⅰ的化合物占所述液晶组合物总重量的15-40％，所述通式Ⅱ的化合物占所述液晶组合物总重量的10-45％，所述通式Ⅲ占所述液晶组合物总重量的20-50％。In some embodiments of the present invention, the compound of general formula I accounts for 15-40% of the total weight of the liquid crystal composition, and the compound of general formula II accounts for 10-45% of the total weight of the liquid crystal composition , the general formula III accounts for 20-50% of the total weight of the liquid crystal composition.

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更多种添加剂。例如，可以加入占所述液晶组合物总重量的0-15％的多色染料和/或手性掺杂剂。Another aspect of the present invention provides a liquid crystal composition further comprising one or more additives known to those skilled in the art and described in the literature. For example, pleochroic dyes and/or chiral dopants may be added in an amount of 0-15% of the total weight of the liquid crystal composition.

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。Possible dopants which are preferably added to the mixture according to the invention are shown below.

Figure BDA0001421861000000332
Figure BDA0001421861000000332

Figure BDA0001421861000000341
Figure BDA0001421861000000341

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％。In the embodiment of the present invention, preferably the dopant accounts for 0-5% 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 .

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。Stabilizers which can be added to the mixtures according to the invention, for example, are mentioned below.

Figure BDA0001421861000000351
Figure BDA0001421861000000351

Figure BDA0001421861000000361
Figure BDA0001421861000000361

Figure BDA0001421861000000371
Figure BDA0001421861000000371

优选地，所述稳定剂选自如下所示的稳定剂。Preferably, the stabilizer is selected from the stabilizers shown below.

Figure BDA0001421861000000372
Figure BDA0001421861000000372

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％。In the embodiment of the present invention, preferably the stabilizer accounts for 0-5% 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; as In a particularly preferred embodiment, the stabilizer accounts for 0-0.1% of the total weight of the liquid crystal composition.

本发明另一方面还提供一种包含上述液晶组合物的液晶显示器件。Another aspect of the present invention also provides a liquid crystal display device comprising the above-mentioned liquid crystal composition.

有益效果：Beneficial effects:

本发明提供的液晶组合物具有适合的光学各向异性、高的清亮点、相对大的介电各向异性，还具有较低的阈值电压和较好的低温储存性，所述液晶组合物应用于液晶显示器中时，可以降低功耗，减少响应时间，增加对比度。The liquid crystal composition provided by the present invention has suitable optical anisotropy, high clearing point, relatively large dielectric anisotropy, and also has lower threshold voltage and better low-temperature storage properties. When used in a liquid crystal display, the power consumption can be reduced, the response time can be reduced, and the contrast ratio can be increased.

具体实施方式Detailed ways

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。The present invention will be described below with reference to specific embodiments. It should be noted that the following embodiments are examples of the present invention, and are only used to illustrate the present invention, but not to limit the present invention. Other combinations and various modifications within the inventive concept can be made without departing from the spirit or scope of the inventions.

为便于表达，以下各实施例中，液晶组合物的基团结构用表2所列的代码表示：For ease of expression, in the following examples, the group structure of the liquid crystal composition is represented by the codes listed in Table 2:

表2液晶化合物的基团结构代码Table 2 Group structure codes of liquid crystal compounds

Figure BDA0001421861000000373
Figure BDA0001421861000000373

Figure BDA0001421861000000381
Figure BDA0001421861000000381

以如下结构式的化合物为例：Take the compound of the following structural formula as an example:

Figure BDA0001421861000000382
Figure BDA0001421861000000382

该结构式如用表1所列代码表示，则可表达为：nCCGF，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，G代表2-氟-1,4-亚苯基，F代表氟。If the structural formula is represented by the codes listed in Table 1, it can be expressed as: nCCGF, where n in the code represents the number of C atoms of the left-terminal alkyl group, for example, n is "3", which means that the alkyl group is -C 3 H 7 ; C in the code represents cyclohexyl, G represents 2-fluoro-1,4-phenylene, and F represents fluorine.

以下实施例中测试项目的简写代号如下：The abbreviated code names of the test items in the following examples are as follows:

Cp(℃)清亮点(向列-各向同性相转变温度)Cp (°C) clearing point (nematic-isotropic phase transition temperature)

Δn 光学各向异性(589nm，25℃)Δn Optical Anisotropy (589nm, 25℃)

Δε 介电各向异性(1KHz，25℃)Δε Dielectric Anisotropy (1KHz, 25℃)

V10 阈值电压(常白模式下，相对对比度为10％的特征电压)V10 threshold voltage (characteristic voltage at 10% relative contrast in normally white mode)

t-30℃ 低温储存时间(在-30℃下)t-30℃ low temperature storage time (at -30℃)

K11 展曲弹性常数K 11 splay elastic constant

K33 弯曲弹性常数K 33 Bending Elastic Constant

其中，in,

光学各向异性使用阿贝折光仪在钠光灯(589nm)光源下、25℃测试得到；Optical anisotropy was measured using Abbe refractometer under sodium lamp (589nm) light source at 25°C;

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；Δε=ε ‖ -ε ⊥ , where ε ‖ is the dielectric constant parallel to the molecular axis, ε ⊥ is the dielectric constant perpendicular to the molecular axis, test conditions: 25℃, 1KHz, the test box is TN90 type, the thickness of the box 7μm;

V10的测试条件：4μm液晶盒，DMS505测试，方波测试；Test conditions for V10: 4μm liquid crystal cell, DMS505 test, square wave test;

K11、K33是使用LCR仪和反平行摩擦盒，测试液晶的C-V曲线计算所得，测试条件：7μm反平行摩擦盒，V＝0.1～20V。K 11 and K 33 are calculated by using an LCR instrument and an anti-parallel rubbing cell to test the CV curve of the liquid crystal. Test conditions: 7 μm anti-parallel rubbing cell, V=0.1-20V.

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。The components used in the following examples can be synthesized by known methods or obtained through commercial channels. These synthesis techniques are conventional, and each of the resulting liquid crystal compounds has been tested to meet electronic compound standards.

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。The liquid crystal compositions were prepared according to the proportions of the liquid crystal compositions specified in the following examples. The preparation of the liquid crystal composition is carried out according to the conventional methods in the art, such as heating, ultrasonic waves, suspension, etc., by mixing in a prescribed ratio.

制备并研究下列实施例中给出的液晶组合物。下面显示了各液晶组合物的组成和其性能参数测试结果。The liquid crystal compositions given in the following examples were prepared and studied. The composition of each liquid crystal composition and the test results of its performance parameters are shown below.

对比例1Comparative Example 1

按表3中所列的各化合物及重量百分数配制成对比例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：The liquid crystal composition of Comparative Example 1 was prepared according to the compounds and weight percentages listed in Table 3, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表3液晶组合物配方及其测试性能Table 3 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000391
Figure BDA0001421861000000391

Figure BDA0001421861000000401
Figure BDA0001421861000000401

对比例2Comparative Example 2

按表4中所列的各化合物及重量百分数配制成对比例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：The liquid crystal composition of Comparative Example 2 was prepared according to the compounds and weight percentages listed in Table 4, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表4液晶组合物配方及其测试性能Table 4 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000402
Figure BDA0001421861000000402

实施例1Example 1

按表5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：The liquid crystal composition of Example 1 is prepared according to the compounds and weight percentages listed in Table 5, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表5液晶组合物配方及其测试性能Table 5 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000403
Figure BDA0001421861000000403

Figure BDA0001421861000000411
Figure BDA0001421861000000411

实施例2Example 2

按表6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：The liquid crystal composition of Example 2 is prepared according to the compounds and weight percentages listed in Table 6, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表6液晶组合物配方及其测试性能Table 6 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000412
Figure BDA0001421861000000412

实施例3Example 3

按表7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：The liquid crystal composition of Example 3 is prepared according to the compounds and weight percentages listed in Table 7, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表7液晶组合物配方及其测试性能Table 7 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000421
Figure BDA0001421861000000421

实施例4Example 4

按表8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：The liquid crystal composition of Example 4 is prepared according to the compounds and weight percentages listed in Table 8, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表8液晶组合物配方及其测试性能Table 8 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000422
Figure BDA0001421861000000422

实施例5Example 5

按表9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：The liquid crystal composition of Example 5 is prepared according to the compounds and weight percentages listed in Table 9, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表9液晶组合物配方及其测试性能Table 9 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000431
Figure BDA0001421861000000431

实施例6Example 6

按表10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：The liquid crystal composition of Example 6 is prepared according to the compounds and weight percentages listed in Table 10, and it is filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表10液晶组合物配方及其测试性能Table 10 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000432
Figure BDA0001421861000000432

Figure BDA0001421861000000441
Figure BDA0001421861000000441

实施例7Example 7

按表11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：The liquid crystal composition of Example 7 was prepared according to the compounds and weight percentages listed in Table 11, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表11液晶组合物配方及其测试性能Table 11 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000442
Figure BDA0001421861000000442

实施例8Example 8

按表12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：The liquid crystal composition of Example 8 was prepared according to the compounds and weight percentages listed in Table 12, and it was filled between the two substrates of the liquid crystal display for performance testing. The test data are shown in the following table:

表12液晶组合物配方及其测试性能Table 12 Liquid crystal composition formula and its test performance

Figure BDA0001421861000000451
Figure BDA0001421861000000451

为了突出本发明的液晶组合物的有益效果，发明人选取和本发明实施例体系相近的对比例。通过以上对比例1-2、实施例1-8可以看出，本发明提供的液晶组合物具有适合的光学各向异性、高的清亮点、相对大的介电各向异性，还具有较低的阈值电压和较好的低温储存性，所述液晶组合物应用于液晶显示器中时，可以降低功耗，减少响应时间，增加对比度。In order to highlight the beneficial effects of the liquid crystal composition of the present invention, the inventors selected a comparative example similar to the system of the embodiment of the present invention. From the above Comparative Examples 1-2 and Examples 1-8, it can be seen that the liquid crystal composition provided by the present invention has suitable optical anisotropy, high clearing point, relatively large dielectric anisotropy, and low high threshold voltage and good low temperature storage performance, when the liquid crystal composition is used in a liquid crystal display, power consumption can be reduced, response time can be reduced, and contrast ratio can be increased.

以上实施方式只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人了解本发明内容并加以实施，并不能以此限制本发明的保护范围，凡根据本发明精神实质所做的等效变化或修饰，都应涵盖在本发明的保护范围内。The above embodiments are only intended to illustrate the technical concept and characteristics of the present invention, and their purpose is to allow those who are familiar with the technology to understand the content of the present invention and implement it, and cannot limit the scope of protection of the present invention. Equivalent changes or modifications made should be covered within the protection scope of the present invention.

Claims (7)

1. A liquid crystal composition, wherein the liquid crystal composition comprises:
at least one compound of the general formula I
Figure FDF0000018629770000011
At least one compound of the general formula II
Figure FDF0000018629770000012
And
at least one compound of the formula III
Figure FDF0000018629770000013
Wherein,
R 1 represents-H, F, an alkyl group having 1 to 12 carbon atoms, an alkenyl group having 2 to 12 carbon atoms,
Figure FDF0000018629770000014
Figure FDF0000018629770000015
Wherein one or more H of the alkyl and the alkenyl may be substituted by F;
R 5 represents an alkylene group having 3 to 12 carbon atoms or an alkenylene group having 3 to 12 carbon atoms;
R 6 represents an alkyl group having 1 to 12 carbon atoms or an alkenyl group having 2 to 12 carbon atoms;
R 2 represents-F, a fluoroalkyl or fluoroalkoxy group having 1 to 12 carbon atoms, a fluoroalkenyl or fluoroalkenyloxy group having 2 to 12 carbon atoms;
R 3 and R 4 Each independently represents-H, alkyl OR alkoxy containing 1-12 carbon atoms, alkenyl OR alkenyloxy containing 2-12 carbon atoms, -OR 5 OR 6 、
Figure FDF0000018629770000016
And R is 3 And R 4 At least one of which is-OR 5 OR 6 ；
Z 1 Represents a single bond, -COO-, -OCO-, -CH 2 O-、-OCH 2 -、-CF 2 O-、-OCF 2 -or-CH 2 CH 2 -；
Z 2 Represents a single bond, -COO-, -OCO-, -CH 2 O-、-OCH 2 -or-CH 2 CH 2 -；
L 1 、L 2 And L 3 Each independently represents-H, -F or-CH 3 And L is 1 And L 2 F is not simultaneously obtained;
ring (C)
Figure FDF0000018629770000017
To represent
Figure FDF0000018629770000018
Wherein
Figure FDF0000018629770000019
One or more-CH 2 -may be replaced by-O-, single bonds in one or more rings may be replaced by double bonds,
Figure FDF00000186297700000110
may be substituted with halogen, -CH = may be substituted with-N = in one or more rings;
ring (C)
Figure FDF00000186297700000111
Ring(s)
Figure FDF00000186297700000112
And ring
Figure FDF00000186297700000113
Each independently represent
Figure FDF00000186297700000114
Figure FDF0000018629770000021
n represents 1, 2, 3 or 4, and when n is 2, 3, 4, the ring
Figure FDF0000018629770000022
May be the same or different, Z 1 May be the same or different;
m represents 0, 1 or 2, and when m is 2, a ring
Figure FDF0000018629770000023
May be the same or different, Z 2 May be the same or different;
R 3 ' and R 4 ' each independently represents-H, an alkyl or alkoxy group having 1 to 12 carbon atoms, an alkenyl or alkenyloxy group having 2 to 12 carbon atoms,
Figure FDF0000018629770000024
Ring (C)
Figure FDF0000018629770000025
Ring (C)
Figure FDF0000018629770000026
And ring
Figure FDF0000018629770000027
Each independently represent
Figure FDF0000018629770000028
Figure FDF0000018629770000029
Z 2 ' represents a single bond, -COO-, -OCO-, -CH 2 O-、-OCH 2 -or-CH 2 CH 2 -；
m 'represents 0, 1 or 2, and when m' is 2, a ring
Figure FDF00000186297700000210
May be the same or different, Z 2 ' may be the same or different and,
the compound of formula III comprises at least one compound of formula III-9:
Figure FDF00000186297700000211
wherein R is 31 ' and R 41 ' independently of one another represent H, an alkane having 1 to 7 carbon atomsAlkyl or alkoxy, alkenyl or alkenyloxy containing 2 to 7 carbon atoms,
Figure FDF00000186297700000212
The compound of the general formula I accounts for 15-37% of the total weight of the liquid crystal composition, the compound of the general formula II accounts for 10-31% of the total weight of the liquid crystal composition, and the compound of the general formula III accounts for 20-44% of the total weight of the liquid crystal composition.
2. The liquid crystal composition of claim 1, wherein the compound of formula i is selected from the group consisting of:
Figure FDF00000186297700000213
and
Figure FDF00000186297700000214
wherein,
ring (C)
Figure FDF0000018629770000031
And ring
Figure FDF0000018629770000032
Each independently represent
Figure FDF0000018629770000033
Figure FDF0000018629770000034
n1 represents 0, 1, 2 or 3, and when n1 is 2 or 3,
Figure FDF0000018629770000035
may be the same or different.
3. The liquid crystal composition of claim 2, wherein the compound of formula i-1 is selected from the group consisting of:
Figure FDF0000018629770000036
Figure FDF0000018629770000041
Figure FDF0000018629770000042
and
Figure FDF0000018629770000043
the compound of formula I-2 is selected from the group consisting of:
Figure FDF0000018629770000044
Figure FDF0000018629770000051
Figure FDF0000018629770000061
Figure FDF0000018629770000071
Figure FDF0000018629770000081
Figure FDF0000018629770000091
Figure FDF0000018629770000101
Figure FDF0000018629770000111
Figure FDF0000018629770000112
and
Figure FDF0000018629770000113
wherein,
R 11 represents-H, -F, an alkyl group containing 1 to 7 carbon atoms, an alkenyl group containing 2 to 7 carbon atoms, wherein one or more H in the alkyl group and the alkenyl group may be substituted by F;
R 21 represents-F, a fluoroalkyl group or fluoroalkoxy group having 1 to 7 carbon atoms, a fluoroalkenyl group or fluoroalkenyloxy group having 2 to 7 carbon atoms.
4. The liquid crystal composition of claim 1, wherein the compound of formula ii is selected from the group consisting of:
Figure FDF0000018629770000114
Figure FDF0000018629770000121
Figure FDF0000018629770000122
and
Figure FDF0000018629770000123
wherein,
R 31 and R 41 Each independently represents H, an alkyl OR alkoxy group having 1 to 7 carbon atoms, an alkenyl OR alkenyloxy group having 2 to 7 carbon atoms, -OR 51 OR 61 、
Figure FDF0000018629770000124
And R is 31 And R 41 At least one of which is-OR 51 OR 61 ；
R 51 Represents an alkylene group having 3 to 10 carbon atoms or an alkenylene group having 3 to 10 carbon atoms;
R 61 represents an alkyl group having 1 to 10 carbon atoms or an alkenyl group having 2 to 10 carbon atoms.
5. The liquid crystal composition of claim 1, wherein the compound of formula iii is further selected from the group consisting of:
Figure FDF0000018629770000125
Figure FDF0000018629770000131
Figure FDF0000018629770000132
and
Figure FDF0000018629770000133
6. the liquid crystal composition of claim 1 or 5, wherein R is 31 ' and R 41 ' at least one of which is an alkenyl or alkenyloxy group containing 2 to 7 carbon atoms.
7. A liquid crystal display device comprising the liquid crystal composition according to any one of claims 1 to 6.
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