CN105586051B - Liquid-crystal composition and its liquid crystal display device - Google Patents
Liquid-crystal composition and its liquid crystal display device Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 279
- 239000000203 mixture Substances 0.000 title claims abstract description 250
- 150000001875 compounds Chemical class 0.000 claims abstract description 313
- 125000004432 carbon atom Chemical group C* 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 125000003342 alkenyl group Chemical group 0.000 claims description 6
- 125000003545 alkoxy group Chemical group 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 13
- 230000004044 response Effects 0.000 abstract description 13
- 238000003860 storage Methods 0.000 abstract description 5
- 238000012360 testing method Methods 0.000 description 35
- 239000000758 substrate Substances 0.000 description 10
- 238000009472 formulation Methods 0.000 description 7
- 0 C*CCC(CC1)[C@@](C)*[C@]1[C@@](C)C[C@](C)([*+3])*CC[C@@](C)* Chemical compound C*CCC(CC1)[C@@](C)*[C@]1[C@@](C)C[C@](C)([*+3])*CC[C@@](C)* 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 125000005453 2,5-difluoro-1,4-phenylene group Chemical group [H]C1=C([*:1])C(F)=C([H])C([*:2])=C1F 0.000 description 1
- 125000005449 2-fluoro-1,4-phenylene group Chemical group [H]C1=C([*:2])C([H])=C(F)C([*:1])=C1[H] 0.000 description 1
- DUJMVKJJUANUMQ-UHFFFAOYSA-N CC(C)CCC#N Chemical compound CC(C)CCC#N DUJMVKJJUANUMQ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
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- 229920005591 polysilicon Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- Liquid Crystal Substances (AREA)
Abstract
The present invention relates to a kind of liquid-crystal composition and its liquid crystal display device.The liquid-crystal composition includes：The compound of at least one general formula I 1 and/or I 2；The compound of at least one general formula II；The compound of at least one general formula III；The compound of at least one general formulae IV；And the compound of at least one general formula V.The liquid-crystal composition of the present invention has wider nematic temperature range, the characteristics such as larger dielectric anisotropy, suitable optical anisotropy, low temperature storage stability be high, relatively low rotary viscosity, liquid-crystal composition of the present invention is suitable for liquid crystal display device, so that liquid crystal display element is with larger in dielectric anisotropy, while clearing point is higher, ensure faster response, and it can work in lower temperature, good reliability, relatively low threshold voltage, can be used in mesolow driving TFT or IPS liquid crystal display elements.
Description
Technical Field
The present invention relates to a liquid crystal composition and a liquid crystal display device thereof, and more particularly, to a liquid crystal composition having a large dielectric anisotropy, a high clearing point, a low rotational viscosity, and a suitable optical anisotropy, and a liquid crystal display device including the same.
Background
Liquid crystal display devices are classified into types such as PC (phase change), TN (twisted nematic), STN (super twisted nematic), ECB (electrically controlled birefringence), OCB (optically compensated bend), IPS (in-plane switching), and VA (vertical alignment) according to a display mode of liquid crystal. The device is classified into a PM (passive matrix) type and an AM (active matrix) type according to a driving method of the device. PM is classified into static (static) and multiplex (multiplex) types. AM is classified into a TFT (thin film transistor), an MIM (metal insulator metal), and the like. The types of TFTs are amorphous silicon (amorphous silicon) and polycrystalline silicon (polysilicon). The latter is classified into a high temperature type and a low temperature type according to a manufacturing process. Liquid crystal display elements are classified into a reflection type using natural light, a transmission type using backlight, and a semi-transmission type using both light sources of natural light and backlight, depending on the type of light source.
TABLE 1 general characteristics of the compositions with AM elements
| NO. | General characteristics of the composition | General characteristics of AM elements |
| 1 | Wide temperature range of nematic phase | Wide temperature range |
| 2 | Low viscosity | Short response time |
| 3 | Appropriate optical anisotropy | High contrast |
| 4 | Large positive or negative dielectric constant anisotropy | Low critical voltage, low power consumption and high contrast |
| 5 | High resistivity | High voltage holding ratio and high contrast |
| 6 | UV and heat stabilization | Long service life |
Liquid crystal materials need to have suitably high dielectric anisotropy, optical anisotropy, and good low-temperature mutual solubility and thermal stability. In addition, the liquid crystal material should also have a low rotational viscosity and a short response time, a low threshold voltage and a high contrast. The performance indexes of the composition are further described based on commercially available liquid crystal display elements. The temperature range of the nematic phase is correlated with the operating temperature range of the element, and the lower the melting point, the higher the clearing point, the wider the temperature range of the nematic phase of the liquid crystal. The upper limit temperature (i.e., the temperature raised to the clearing point, Cp) of the nematic phase is preferably 70 ℃ or higher, and the lower limit temperature (i.e., the temperature lowered to the melting point, t) of the nematic phase is preferably 70 ℃ or higher-40℃) Preferably at most-10 ℃. The rotational viscosity of the composition correlates to the response time of the element. In order to display animation in the element, it is preferable that the response time of the element is short. Therefore, it is preferable that the rotational viscosity of the composition is small, and it is more preferable that the rotational viscosity of the composition is small at a low temperature.
The AM device preferably has characteristics such as a wide usable temperature range, a short response time, a large contrast ratio, a low threshold voltage, a large voltage holding ratio, and a long lifetime, and the response time is preferably shorter than 1 millisecond. Therefore, the composition preferably has high upper limit temperature of the nematic phase, low lower limit temperature of the nematic phase, low viscosity, high optical anisotropy, high dielectric anisotropy, high resistivity, high stability to ultraviolet light, high stability to heat, and the like.
The temperature range of the nematic phase is related to the temperature range in which the liquid crystal display device is used, and the liquid crystal display device containing the liquid crystal composition having a wide temperature range of the nematic phase can be used as a liquid crystal display device in a wider range of temperature.
A liquid crystal display element containing a liquid crystal composition having a large absolute value of dielectric anisotropy can reduce the base voltage value, reduce the driving voltage, and further reduce the power consumption.
A liquid crystal display element containing a liquid crystal composition having a low rotational viscosity can shorten the response time. When the response time of the liquid crystal display element is short, it is applicable to animation display. In addition, when the liquid crystal composition is injected into the cell of the liquid crystal display device, the injection time can be shortened, and the workability can be improved.
It is generally difficult for a single liquid crystal compound to exert its properties, and it is generally mixed with a plurality of other liquid crystal compounds to prepare a composition. Therefore, there is a need for a liquid crystal composition having the above advantages, and the compound mentioned in CN1249736A can be formulated into a liquid crystal composition to obtain better characteristics, and the structure thereof is as follows:
however, this class of compounds has insufficient dielectric anisotropy, insufficient optical anisotropy, and little contribution to the composition mixing to large Δ n and Δ ∈ and is therefore disadvantageous for use in small box-thickness products, directly resulting in a not fast response of said products.
The invention aims to provide a liquid crystal composition having at least one of characteristics such as a high upper limit temperature of a nematic phase, a low lower limit temperature of the nematic phase, a low rotational viscosity, a suitable optical anisotropy, a large dielectric anisotropy, and a good low-temperature storage stability. Another object of the present invention is to provide an AM device which is a composition having characteristics such as high optical anisotropy, high dielectric anisotropy, and high stability against ultraviolet light, and which has characteristics such as short response time, low threshold voltage, high voltage holding ratio, wide temperature range for use, and long life.
Disclosure of Invention
The invention aims to provide a liquid crystal composition having at least one of characteristics such as a wide nematic phase temperature range, large dielectric anisotropy, appropriate optical anisotropy, a high clearing point, low rotational viscosity, and good low-temperature stability.
The other purpose of the invention is to provide a liquid crystal display element, which comprises a composition with the characteristics of larger dielectric anisotropy, proper optical anisotropy, high stability to low temperature, lower rotational viscosity and the like, so that the liquid crystal display element has the characteristics of larger dielectric anisotropy, higher clearing point, higher response guarantee, lower temperature operation, good reliability and lower threshold voltage, and can be used for driving a TFT or IPS liquid crystal display element at medium and low voltage.
In order to achieve the above object, the present invention provides a liquid crystal composition comprising:
at least one compound of the general formulae I-1 and/or I-2
At least one compound of the general formula II
At least one compound of the formula III
At least one compound of the general formula IV
And
at least one compound of the formula V
Wherein,
R1、R2、R4、R5、R6and R7The same or different, each independently represents a fluorinated or non-fluorinated alkyl group having 1 to 7 carbon atoms, a fluorinated or non-fluorinated alkoxy group having 1 to 7 carbon atoms, or a fluorinated or non-fluorinated alkenyl group having 2 to 7 carbon atoms;
ring (C)Ring (C)Ring (C)Ring (C)Ring (C)Ring (C)And ringAre the same or different and each independently representsOr
Z1And Z2The same or different, each independently represents a single bond, -COO-, -CH2CH2-or-CH2O-；
L represents-F or-OCF2-CF＝CF2；
L1represents-H or-CH3；
L2And L3Independently represents-H or-F;
a. b and c are the same or different and each independently represents 0 or 1;
wherein, when a is 0, if the ringIs composed ofGuide ringAlso is that
When b is 0, R6And R7Is not alkenyl;
when b-c-0, b-1 and c-0 or b-0 and c-1, the ringAnd ringIs not simultaneously
In some embodiments of the present invention, it is preferred that the compound of formula I-1 and/or I-2 comprises 1 to 30% by weight of the total liquid crystal composition; the compound of the general formula II accounts for 1-30% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 15-55% of the total weight of the liquid crystal composition; the compound of the general formula IV accounts for 1-35% of the total weight of the liquid crystal composition; and the compound of the general formula V accounts for 1-35% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, it is preferred that the compounds of formula I-1 and/or I-2 comprise 5 to 25% by weight of the total liquid crystal composition; the compound of the general formula II accounts for 1-25% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 20-45% of the total weight of the liquid crystal composition; the compound of the general formula IV accounts for 5-25% of the total weight of the liquid crystal composition; and the compound of the general formula V accounts for 15-30% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, preferably, the compound of formula I-1 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula i-2 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula ii is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula iii is selected from one or more compounds in the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula iv is selected from one or more compounds of the group consisting of:
and
wherein,
R5independently represents a fluorinated or non-fluorinated alkyl group having 1 to 5 carbon atoms, a fluorinated or non-fluorinated alkoxy group having 1 to 5 carbon atoms, or a fluorinated or non-fluorinated alkenyl group having 2 to 5 carbon atoms.
In some embodiments of the present invention, preferably, the compound of formula IV-1 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-2 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-3 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-4 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-5 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-6 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-7 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-8 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-9 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-10 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-11 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, it is preferred that the compound of formula IV-12 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula IV-13 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, it is preferred that the compound of formula IV-16 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, it is preferred that the compound of formula IV-18 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v is selected from one or more compounds in the group consisting of:
and
wherein,
R6and R7The same or different, each independently represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.
In some embodiments of the present invention, the compound of formula V-2 comprises 0 to 15% of the total weight of the liquid crystal composition, and in some embodiments of the present invention, the compound of formula V-2 comprises 0 to 10% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, the compound of formula V-4 comprises 0 to 15% of the total weight of the liquid crystal composition, and in some embodiments of the present invention, the compound of formula V-4 comprises 0 to 10% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, the compound of formula V-5 comprises 0 to 15% by weight of the total liquid crystal composition, in some embodiments of the present invention, the compound of formula V-5 comprises 0 to 10% by weight of the total liquid crystal composition, and in some embodiments of the present invention, the compound of formula V-5 comprises 2 to 10% by weight of the total liquid crystal composition.
In some embodiments of the invention, the compound of formula V-7 comprises 0-10% by weight of the total liquid crystal composition.
In some embodiments of the present invention, the compound of formula V-3 and/or formula V-8 comprises 5 to 25% of the total weight of the liquid crystal composition, and in some embodiments of the present invention, the compound of formula V-3 and/or formula V-8 comprises 10 to 20% of the total weight of the liquid crystal composition.
In some embodiments of the present invention, preferably, the compound of formula v-1 is selected from one or more compounds in the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-2 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-3 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-4 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-5 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-6 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-7 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-8 is selected from one or more compounds of the group consisting of:
and
in some embodiments of the present invention, preferably, the compound of formula v-9 is selected from one or more compounds of the group consisting of:
and
another aspect of the present invention provides a liquid crystal display device comprising the liquid crystal composition of the present invention.
The liquid crystal composition comprising the liquid crystal compound is determined by performing a combination experiment on the compounds and comparing with a contrast, and has the characteristics of wider nematic phase temperature range, larger dielectric anisotropy, proper optical anisotropy, high low-temperature storage stability, lower rotational viscosity and the like.
In some embodiments, the liquid crystal composition of the present invention has a low rotational viscosity (γ is between 62 and 73), which allows a liquid crystal display device to achieve a faster response; the low-temperature storage of the liquid crystal composition can realize-40 ℃ storage for seven days without crystallization (t)-40>7 days) so that the liquid crystal display element can operate at a lower temperature; the liquid crystal composition has larger dielectric (delta epsilon is between 6.5 and 8.4) so that the liquid crystal display element has lower threshold voltage, and can be used for a TFT or IPS liquid crystal display element driven at middle and low voltage; the liquid crystal composition has high charge retention rate (more than VHR 97.0%) so that the liquid crystal display element has good reliability.
In the invention, the proportions are weight ratios, all temperatures are centigrade temperatures, and the thickness of the box selected for the voltage data test is 7 μm, unless otherwise specified.
Detailed Description
The invention will be illustrated below with reference to specific embodiments. It should be noted that the following examples are illustrative of the present invention, and are not intended to limit the present invention. Other combinations and various modifications within the spirit or scope of the present invention may be made without departing from the spirit or scope of the present invention.
For convenience of expression, in the following examples, the group structure of the liquid crystal composition is represented by the code listed in Table 2:
TABLE 2 radical structural code of liquid crystal compounds
Compounds of the following formula are exemplified:
the structural formula is represented by the code listed in Table 2, and can be expressed as: nCGUF, wherein n in the code represents the number of carbon atoms of the left alkyl group, for example, n is "2", that is, the alkyl group is-C2H5(ii) a C in the code represents "cyclohexane group", G in the code represents "2-fluoro-1, 4-phenylene group", U in the code represents "2, 5-difluoro-1, 4-phenylene group", and F in the code represents "fluorine substituent".
The abbreviated codes of the test items in the following examples are as follows:
wherein the optical anisotropy is measured by an Abbe refractometer under a sodium lamp (589nm) light source at 25 ℃; the dielectric test cell was of the type TN90, the cell thickness being 7 μm.
V10 test conditions: c/1KHZ, JTSB 7.0.
The components used in the following examples can be synthesized by a known method or obtained commercially. These synthesis techniques are conventional, and the resulting liquid crystal compounds were tested to meet the standards for electronic compounds.
Liquid crystal compositions were prepared according to the compounding ratios of the liquid crystal compositions specified in the following examples. The liquid crystal composition is prepared according to the conventional method in the field, such as heating, ultrasonic wave, suspension and the like, and is mixed according to the specified proportion.
Liquid crystal compositions given in the following examples were prepared and studied. The composition of each liquid crystal composition and the results of the performance parameter test thereof are shown below.
Comparative example 1
The liquid crystal composition of comparative example 1, which was filled between two substrates of a liquid crystal display and subjected to a performance test, was prepared with each compound and weight percentage as listed in table 3, and the test data are shown in the following table:
TABLE 3 liquid crystal composition formula and its test performance
Example 1
The liquid crystal composition of example 1 was prepared according to the compounds and weight percentages listed in table 4, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 4 liquid crystal composition formula and its test performance
Example 2
The liquid crystal composition of example 2 was prepared according to the compounds and weight percentages listed in table 5, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 5 liquid crystal composition formulations and their test properties
Example 3
The liquid crystal composition of example 3 was prepared according to the compounds and weight percentages listed in table 6, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 6 liquid crystal composition formula and its test performance
Example 4
The liquid crystal composition of example 4 was prepared according to the compounds and weight percentages listed in table 7, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 7 liquid crystal composition formulations and their test properties
Example 5
The liquid crystal composition of example 5 was prepared according to the compounds and weight percentages listed in table 8, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 8 liquid crystal composition formulations and their test properties
Example 6
The liquid crystal composition of example 6 was prepared according to the compounds and weight percentages listed in table 9, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 9 liquid crystal composition formulations and their test properties
Example 7
The liquid crystal composition of example 7 was prepared according to the compounds and weight percentages listed in table 10, and filled between two substrates of a liquid crystal display for performance testing, and the test data are shown in the following table:
TABLE 10 liquid crystal composition formulations and their test properties
Example 8
The liquid crystal composition of example 8 was prepared according to the compounds and weight percentages listed in table 11, and filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 11 liquid crystal composition formulations and their test properties
Example 9
The liquid crystal composition of example 9 was prepared according to the compounds and weight percentages listed in table 12, and filled between two substrates of a liquid crystal display for performance testing, the test data are shown in the following table:
TABLE 12 liquid crystal composition formulations and their test properties
Referring to comparative example 1, it can be seen from the above test data of examples 1-9 that the liquid crystal composition provided by the present invention has a wider nematic phase temperature range, a higher clearing point, good low temperature stability, a larger dielectric anisotropy, a lower rotational viscosity, a suitable optical anisotropy, and a high charge retention rate suitable for use in a liquid crystal display device.
Claims (11)
1. A liquid crystal composition, comprising:
at least one compound of the general formulae I-1 and/or I-2
At least one compound of the general formula II
At least one compound of the formula III
At least one compound of the general formula IV
And
at least one compound of the formula V
Wherein,
R1、R2、R4、R5、R6and R7The same or different, each independently represents a fluorinated or non-fluorinated alkyl group having 1 to 7 carbon atoms, a fluorinated or non-fluorinated alkoxy group having 1 to 7 carbon atoms, or a fluorinated or non-fluorinated alkenyl group having 2 to 7 carbon atoms;
ring (C)Ring (C)Ring (C)Ring (C)Ring (C)Ring (C)And ringAre the same or different and each independently representsOr
Z1And Z2The same or different, each independently represents a single bond, -COO-, -CH2CH2-or-CH2O-；
L represents-F or-OCF2-CF＝CF2；
L1represents-H or-CH3；
L2And L3Independently represents-H or-F;
a. b and c are the same or different and each independently represents 0 or 1;
wherein, when a is 0, if the ringIs composed ofGuide ringAlso is thatWhen b is 0, R6And R7Is not alkenyl;
when b-c-0 or b-1 and c-0 or b-0 and c-1, the ringAnd ringIs not simultaneously
The compounds of the general formula I-1 and/or I-2 account for 1-30% of the total weight of the liquid crystal composition.
2. The liquid crystal composition of claim 1, wherein the compound of formula i-1 is selected from one or more compounds of the group consisting of:
the compound of the general formula I-2 is selected from one or more compounds of the group consisting of:
3. the liquid crystal composition of claim 1, wherein the compound of formula ii is selected from one or more compounds of the group consisting of:
4. the liquid crystal composition of claim 1, wherein the compound of formula iii is selected from one or more compounds of the group consisting of:
5. the liquid crystal composition of claim 1, wherein the compound of formula iv is selected from one or more compounds of the group consisting of:
wherein,
R5represents a fluorinated or non-fluorinated alkyl group having 1 to 5 carbon atoms, a fluorinated or non-fluorinated alkoxy group having 1 to 5 carbon atoms, or a fluorinated or non-fluorinated alkenyl group having 2 to 5 carbon atoms.
6. The liquid crystal composition of claim 5, wherein the compound of formula iv-1 is selected from one or more compounds of the group consisting of:
the compound of the general formula IV-2 is selected from one or more compounds of the group consisting of:
the compound of the general formula IV-3 is selected from one or more compounds of the group consisting of:
the compound of formula IV-4 is selected from one or more compounds of the group consisting of:
the compound of formula IV-5 is selected from one or more compounds of the group consisting of:
the compound of formula IV-6 is selected from one or more compounds of the group consisting of:
the compound of formula IV-7 is selected from one or more compounds of the group consisting of:
the compound of formula IV-8 is selected from one or more compounds of the group consisting of:
the compound of formula IV-9 is selected from one or more compounds of the group consisting of:
the compound of formula IV-10 is selected from one or more compounds of the group consisting of:
the compound of formula IV-11 is selected from one or more compounds of the group consisting of:
the compound of formula IV-12 is selected from one or more compounds of the group consisting of:
the compound of formula IV-13 is selected from one or more compounds of the group consisting of:
the compounds of the general formula IV-16 are selected from one or more compounds from the group consisting of:
the compound of formula IV-18 is selected from one or more compounds of the group consisting of:
7. the liquid crystal composition of claim 1, wherein the compound of formula v is selected from one or more compounds of the group consisting of:
wherein,
R6and R7The same or different, each independently represents an alkyl group having 1 to 5 carbon atoms or an alkoxy group having 1 to 5 carbon atoms.
8. Liquid crystal composition according to claim 7, wherein the compound of formula v-1 is selected from one or more compounds from the group consisting of:
the compound of formula V-2 is selected from one or more compounds from the group consisting of:
the compound of formula V-3 is selected from one or more compounds from the group consisting of:
the compound of formula V-4 is selected from one or more compounds from the group consisting of:
the compound of formula V-5 is selected from one or more compounds from the group consisting of:
the compound of formula V-6 is selected from one or more compounds from the group consisting of:
the compound of formula V-7 is selected from one or more compounds from the group consisting of:
the compound of formula V-8 is selected from one or more compounds from the group consisting of:
the compound of formula v-9 is selected from one or more compounds from the group consisting of:
9. liquid crystal composition according to any of claims 1 to 8, wherein the compound of formula ii represents 1 to 30% of the total weight of the liquid crystal composition; the compound of the general formula III accounts for 15-55% of the total weight of the liquid crystal composition; the compound of the general formula IV accounts for 1-35% of the total weight of the liquid crystal composition; and the compound of the general formula V accounts for 1-35% of the total weight of the liquid crystal composition.
10. The liquid crystal composition of claim 9, wherein the liquid crystal composition comprises:
a compound V-3-1 accounting for 4 percent of the total weight of the liquid crystal composition
39% by weight of compound III-1 based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 4% of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 4% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 5% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 8 percent of the total weight of the liquid crystal composition;
a compound II-2 accounting for 7 percent of the total weight of the liquid crystal composition;
compound II-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-5-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-6-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-3-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound V-3-7 accounting for 4 percent of the total weight of the liquid crystal composition;
compound V-5-1 accounting for 1 percent of the total weight of the liquid crystal composition; and
compound V-5-3 accounting for 1 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound V-4-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-3-1 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-1-3 accounting for 4% of the total weight of the liquid crystal composition;
compound III-1 in an amount of 36% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 5% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound II-3 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-3-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-10-2 accounting for 4% of the total weight of the liquid crystal composition;
a compound IV-9-2 accounting for 4 percent of the total weight of the liquid crystal composition; and
a compound IV-6-3 accounting for 5 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound V-4-10 accounting for 3 percent of the total weight of the liquid crystal composition;
compound III-1 in an amount of 38% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 4% of the total weight of the liquid crystal composition;
11 percent of compound V-8-1 based on the total weight of the liquid crystal composition;
compound II-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-7-2 accounting for 5 percent of the total weight of the liquid crystal composition;
5-3 of a compound IV-5 percent of the total weight of the liquid crystal composition;
a compound IV-11-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-10-2 accounting for 2% of the total weight of the liquid crystal composition; and
a compound IV-12-1 accounting for 5 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound IV-9-2 accounting for 2 percent of the total weight of the liquid crystal composition;
a compound IV-1-3 accounting for 6 percent of the total weight of the liquid crystal composition;
a compound V-3-1 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-3-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-3-2 accounting for 4 percent of the total weight of the liquid crystal composition;
compound III-1 in an amount of 40% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 4% of the total weight of the liquid crystal composition;
3% of compound I-2-3 by weight of the total liquid crystal composition;
3% of compound I-2-4 by weight of the total liquid crystal composition;
a compound V-8-1 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 5 percent of the total weight of the liquid crystal composition;
compound V-5-1 accounting for 2 percent of the total weight of the liquid crystal composition;
compound V-5-3 accounting for 2 percent of the total weight of the liquid crystal composition; and
a compound V-5-4 accounting for 2 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound IV-10-2 accounting for 4% of the total weight of the liquid crystal composition;
a compound IV-11-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-5-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-7-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-2-2 accounting for 3 percent of the total weight of the liquid crystal composition;
compound III-1 in an amount of 41% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 4% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 4% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound II-3 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-5-1 accounting for 1 percent of the total weight of the liquid crystal composition;
a compound IV-5-3 accounting for 2% of the total weight of the liquid crystal composition; and
a compound IV-5-4 accounting for 1 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound V-4-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-9-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-4-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-12-2 accounting for 7 percent of the total weight of the liquid crystal composition;
a compound IV-9-3 accounting for 3 percent of the total weight of the liquid crystal composition;
5 percent of compound V-7-4 in percentage by weight of the total weight of the liquid crystal composition;
a compound V-2-2 accounting for 2 percent of the total weight of the liquid crystal composition;
37% by weight of compound III-1, based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 6 percent of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 5% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound II-3 accounting for 2 percent of the total weight of the liquid crystal composition; and
a compound II-4 accounting for 2 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound IV-18-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-10-2 accounting for 7% of the total weight of the liquid crystal composition;
a compound IV-16-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound IV-7-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-2-2 accounting for 2 percent of the total weight of the liquid crystal composition;
compound III-1 in an amount of 40% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 4% of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 4% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 4% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 9 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 5 percent of the total weight of the liquid crystal composition;
a compound II-3 accounting for 4 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 4 percent of the total weight of the liquid crystal composition;
compound V-5-1 accounting for 1 percent of the total weight of the liquid crystal composition;
compound V-5-3 accounting for 2 percent of the total weight of the liquid crystal composition; and
compound V-5-4 accounting for 1 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound V-4-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-3-1 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound IV-1-3 accounting for 4% of the total weight of the liquid crystal composition;
compound III-1 in an amount of 36% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 6 percent of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 5% of the total weight of the liquid crystal composition;
a compound V-8-1 accounting for 10 percent of the total weight of the liquid crystal composition;
compound II-2 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound II-3 accounting for 3 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-3-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-10-2 accounting for 4% of the total weight of the liquid crystal composition;
a compound IV-9-2 accounting for 4 percent of the total weight of the liquid crystal composition; and
a compound IV-6-3 accounting for 5 percent of the total weight of the liquid crystal composition,
alternatively, the liquid crystal composition comprises:
a compound V-4-10 accounting for 3 percent of the total weight of the liquid crystal composition;
compound III-1 in an amount of 38% by weight based on the total weight of the liquid crystal composition;
compound I-2-2 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-3 accounting for 5% of the total weight of the liquid crystal composition;
compound I-2-4 accounting for 4% of the total weight of the liquid crystal composition;
11 percent of compound V-8-1 based on the total weight of the liquid crystal composition;
compound II-2 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-3 accounting for 5 percent of the total weight of the liquid crystal composition;
compound II-4 accounting for 4 percent of the total weight of the liquid crystal composition;
a compound V-7-2 accounting for 5 percent of the total weight of the liquid crystal composition;
5-3 of a compound IV-5 percent of the total weight of the liquid crystal composition;
a compound IV-11-2 accounting for 3 percent of the total weight of the liquid crystal composition;
a compound IV-10-2 accounting for 2% of the total weight of the liquid crystal composition; and
a compound IV-12-1 accounting for 5 percent of the total weight of the liquid crystal composition.
11. A liquid crystal display device comprising the liquid crystal composition of any one of claims 1 to 10.
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| CN103305231A (en) * | 2013-06-13 | 2013-09-18 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composite containing difluorooxymethylene bridge polar monomer compound |
| TW201422790A (en) * | 2012-12-04 | 2014-06-16 | Jnc Corp | Liquid crystal composition and use thereof, liquid crystal display element |
| EP2757139A1 (en) * | 2011-09-14 | 2014-07-23 | JNC Corporation | Compound, liquid crystal composition and liquid crystal display element |
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| CN101652453A (en) * | 2007-02-19 | 2010-02-17 | 智索株式会社 | Liquid crystal composition and liquid crystal display element |
| CN102858918A (en) * | 2010-02-12 | 2013-01-02 | 捷恩智株式会社 | Liquid crystal composition and liquid crystal display element |
| EP2757139A1 (en) * | 2011-09-14 | 2014-07-23 | JNC Corporation | Compound, liquid crystal composition and liquid crystal display element |
| TW201422790A (en) * | 2012-12-04 | 2014-06-16 | Jnc Corp | Liquid crystal composition and use thereof, liquid crystal display element |
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