CN109988583A - A kind of liquid-crystal composition and liquid crystal display device - Google Patents
A kind of liquid-crystal composition and liquid crystal display device Download PDFInfo
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Abstract
The invention discloses a kind of liquid-crystal composition, the liquid-crystal composition includes at least one structural formula compound shown in formula I, at least one structural formula such as Formula II compound represented and at least one structural formula such as formula III compound represented:
Description
Technical field
The present invention relates to liquid crystal material technical fields.More particularly, to a kind of liquid-crystal composition and liquid crystal display device.
Background technique
Since Austrian scientist Lai Nicier in 1888 has been synthesized liquid crystal for the first time, liquid crystal industry is really sent out
Exhibition is nearly more than 30 years things, since liquid crystal display material has clear advantage, as driving voltage is low, power consumption is small, reliability
High, display contains much information, colored display, flicker free, FPD may be implemented etc., and liquid crystal monomer and liquid crystal display all experienced
Huge development, from TN, STN of the black and white the small screen before 30 years till now TN-TFT, VA-TFT of large color screen,
IPS-TFT, PDLC etc..
The dielectric property of liquid crystal is indicated with permittivity ε.The electric field dielectric constant parallel with liquid crystal director ε ∥ table
Show, the electric field dielectric constant vertical with liquid crystal director is indicated with ε ⊥, and dielectric anisotropy constant is Δ ε=ε ∥-ε ⊥.If
Liquid crystal molecule polar group permanent dipole away from direction it is consistent with molecular long axis direction, the electronic migration in long axis of liquid crystal molecule direction
Degree is maximum, in this way, having big dipole moment on the direction parallel with molecular long axis, dielectric anisotropy is positive, Δ ε > 0, in this way
Liquid crystal be called positivity liquid crystal.If liquid crystal molecule polar group permanent dipole away from direction it is vertical with molecular long axis direction, liquid crystal
The electronic migration degree in molecular short-axis direction is maximum, in this way, with having small dipole moment on the direction of molecular long axis normal, dielectric is each
Anisotropy is negative, and liquid crystal as Δ ε < 0 is called negative liquid crystal.
At present in liquid crystal display market, competitive display pattern mainly has, in-plane switching in-plane
Switching, IPS, fringing field switch fringe-field switching, FFS, and vertical arrangement vertical
The display patterns such as alignment, VA.Pursuit based on people to dynamic response, the sound of VR, AR etc. new display demand requirement pair
Answer the requirement of speed higher and higher, the response speed for improving liquid crystal material is a problem to be solved, and with mobile phone, notebook
How popularizing for the mobile office equipments such as computer, improve the efficiency of energy utilization of liquid crystal display, extends equipment task time,
It is the emphasis of producer's concern.
Accordingly, it is desirable to provide a kind of liquid-crystal composition and liquid crystal display device, at least solve the problems, such as one of above-mentioned.
Summary of the invention
The first purpose of this invention is to provide a kind of liquid-crystal composition.
Second object of the present invention is to provide a kind of liquid crystal display device.
In order to achieve the above first purpose, the present invention adopts the following technical solutions:
A kind of liquid-crystal composition, the liquid-crystal composition include that at least one structural formula compound shown in formula I liquid-crystalizes
Close object, at least one structural formula such as Formula II compound represented and at least one structural formula such as formula III compound represented:
Wherein,
R1、R2Each independently represent the alkyl that carbon atom number is 1~5, any one or more disjunct CH2By ring
Appointing in the alkenyl that the alkyl or carbon atom number that the carbon atom number that amyl, cyclobutyl or cyclopropyl replace is 1~5 are 3~5
One group；R1And R2In hydrogen on any carbon atom can be replaced each independently by fluorine；
X indicates S, O ,-CH2CH2Or-CH2O-；
R3、R4、R5、R6Each independently represent alkoxy that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5,
The alkenyloxy that the alkenyl or carbon atom number that carbon atom number is 2~5 are 3~5；R3、R4、R5And R6In on any carbon atom
Hydrogen can be replaced by fluorine each independently；
Z1Indicate singly-bound or-CH2O-；
M, o, p each independently represent 0,1 or 2；
Each independently represent in following radicals any one or it is more
Kind:
Structural formula is that the dielectric of composition, structure can be substantially improved in the compound of Formulas I in liquid-crystal composition of the invention
Formula is that the compound of Formula II can improve viscosity and clearing point, and it is basic that structural formula is that the compound of formula III is capable of providing composition
Dielectric and clearing point；Furthermore also have between three and cooperate, act synergistically, so that composition is in viscosity, clearing point and Jie
The counterbalance effect of electric three is more excellent i.e. compared with the not composition of adding type I, can provide bigger dielectric effect.
Preferably, it is specially Formulas I -1 at least one of to I-4 that the structural formula, which is the structural formula of the compound of Formulas I:
Wherein, R21、R22The alkyl that carbon atom number is 1~5 is each independently represented, it is any one or more disjunct
CH2The alkenyl that the alkyl or carbon atom number that the carbon atom number replaced by cyclopenta, cyclobutyl or cyclopropyl is 1~5 are 3~5
In any group；R21And R22In hydrogen on any carbon atom can be replaced each independently by fluorine.
Preferably, it is specially at least one of Formula II -1 into II-5 that the structural formula, which is the structural formula of the compound of Formula II,
Kind:
Wherein,
R23、R24It is former to each independently represent alkoxy, carbon that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5
The alkenyloxy that the alkenyl or carbon atom number that subnumber is 2~5 are 3~5；R23And R24In hydrogen on any carbon atom can be respective
Independently replaced by fluorine.
Preferably, the structural formula be formula III compound structural formula be specially formula III -1 into III-10 at least
It is a kind of:
Wherein,
R23、R24It is former to each independently represent alkoxy, carbon that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5
The alkenyloxy that the alkenyl or carbon atom number that subnumber is 2~5 are 3~5；R23And R24In hydrogen on any carbon atom can be respective
Independently replaced by fluorine.
Preferably, in the liquid-crystal composition, structural formula is that the mass percentage content of the compound of Formulas I is 1~15%,
Structural formula is that the mass percentage content of the compound of Formula II is 20~80%, and structural formula is the quality hundred of the compound of formula III
Dividing than content is 10~70%.
Preferably, the liquid-crystal composition also includes the compound that one or more structural formulas are formula IV, is used for positive negativity
The adjusting of dielectric:
Wherein,
R7、R8Each independently represent F, the alkyl that carbon atom number is 1~5, any one or more disjunct CH2Quilt
The alkyl that the carbon atom number that cyclopenta, cyclobutyl or cyclopropyl replace is 1~5, the alkyl that fluorine-substituted carbon atom number is 1~5,
The alkoxy that carbon atom number is 1~5, the alkoxy that fluorine-substituted carbon atom number is 1~5, the alkenyl that carbon atom number is 2~5,
The alkenyl that fluorine-substituted carbon atom number is 2~5, the alkenyloxy or fluorine-substituted carbon atom number that carbon atom number is 3~5 are 3
~5 alkenyloxy, but R7And R8It is not simultaneously F；
It each independently represents
N indicates 1 or 2；
Z2、Z3Each independently represent singly-bound ,-CF2O-、-CH2CH2Or-CH2O-。
Preferably, the structural formula be formula IV compound structural formula be specially in following formula I V-1~IV-22 at least
It is a kind of:
Wherein, X1、X2Each independently represent H or F, but X in same structure formula1、X2Simultaneously it is not H, is not also simultaneously F；
(F) H or F is indicated；
R51, R52Each independently represent the alkyl that carbon atom number is 1~5, any one or more disjunct CH2By ring
The alkyl that the carbon atom number that amyl, cyclobutyl or cyclopropyl replace is 1~5, the alkyl that fluorine-substituted carbon atom number is 5, carbon are former
The alkoxy that subnumber is 1~5, the alkoxy that fluorine-substituted carbon atom number is 1~5, the alkenyl that carbon atom number is 2~5, fluorine take
The alkenyl that the carbon atom number in generation is 2~5, the alkenyloxy or fluorine-substituted carbon atom number that carbon atom number is 3~5 are 3~5
Alkenyloxy.
Preferably, in the liquid-crystal composition, structural formula is that the mass percentage content of the compound of Formulas I is 1~15%,
Structural formula is that the mass percentage content of the compound of Formula II is 20~80%, and structural formula is the quality hundred of the compound of formula III
Dividing than content is 5~70%, and structural formula is that the mass percentage content of the compound of formula IV is 5~50%.
Preferably, the liquid-crystal composition also includes the compound that one or more structural formulas are Formula V, is situated between for positive negativity
The adjusting of electricity:
Wherein,
R9、R10Each independently represent alkyl that alkyl, fluorine-substituted carbon atom number that carbon atom number is 1~5 are 1~5,
Alkenyl that alkoxy that alkoxy that carbon atom number is 1~5, fluorine-substituted carbon atom number are 1~5, carbon atom number are 2~5,
The alkenyloxy or fluorine-substituted carbon atom number that alkenyl that fluorine-substituted carbon atom number is 2~5, carbon atom number are 3~5 are 3
~5 alkenyloxy；
Z4Indicate singly-bound or-CF2O-；
Q indicates 2 or 3；
It indicates
Preferably, the structural formula be Formula V compound structural formula be specially in following formula V-1~IV-28 at least one
Kind:
Wherein,
R71、R72Each independently represent the alkane that alkyl, fluorine-substituted carbon atom number that carbon atom number is 1~5 are 1~5
The alkene that alkoxy that alkoxy that base, carbon atom number are 1~5, fluorine-substituted carbon atom number are 1~5, carbon atom number are 2~5
The alkenyloxy or fluorine-substituted carbon atom number that alkenyl that base, fluorine-substituted carbon atom number are 2~5, carbon atom number are 3~5
For 3~5 alkenyloxy.
Preferably, in the liquid-crystal composition, structural formula is that the mass percentage content of the compound of Formulas I is 1~15%,
Structural formula is that the mass percentage content of the compound of Formula II is 20~80%, and structural formula is the quality hundred of the compound of formula III
Dividing than content is 5~70%, and structural formula is that the mass percentage content of the compound of formula IV is 0~50%, and structural formula is Formula V
The mass percentage content of compound is 5~50%.
Preferably, in the liquid-crystal composition, in order to promote anti-UV and antioxygenic property, additive can also be added, make
For anti-oxidant, uvioresistant additive；The additive is more preferably one of following formula S-1~S-4 or a variety of:
To reach above-mentioned third purpose, the present invention provides a kind of liquid crystal display device, and the liquid crystal display device is by as above
The liquid-crystal composition is prepared.
Preferably, the liquid crystal display device is liquid crystal display element or liquid crystal display.
Preferably, the liquid crystal display device is Actire matrix display device or passive matrix display devices.
Beneficial effects of the present invention are as follows:
Liquid-crystal composition of the invention has lower viscosity, has biggish dielectric anisotropy Δ ε, moderate optics
Anisotropy Δ n；Liquid crystal display device comprising the liquid-crystal composition has good reliability energy, which, which has, rings
The characteristics of answering fireballing advantage and extending the mobile device working time.
Specific embodiment
In order to illustrate more clearly of the present invention, below with reference to preferred embodiment, the present invention is described further.Ability
Field technique personnel should be appreciated that following specifically described content is illustrative and be not restrictive, this should not be limited with this
The protection scope of invention.
In the present invention, preparation method is then conventional method unless otherwise specified.The percentage is equal unless otherwise specified
For mass percent.
Liquid-crystal composition of the invention, which can be used, produces the method that liquid-crystal compounds mixes, and such as mixes at high temperature
Different component and the method being soluble in one another preparation, liquid-crystal composition of the invention can also be according to other conventional preparation methods, such as
Heating, ultrasonic wave are taken, prepared by the modes such as suspension.
Percentage in this specification is mass percent, and temperature is degree Celsius (DEG C), the specific meaning of other symbols and
Test condition is as follows:
Cp indicates clearing point (DEG C), the test of DSC sizing technique；
S-N indicates the crystalline state of liquid crystal to nematic fusing point (DEG C)；
Δ n indicates optical anisotropy, noFor the refractive index of ordinary light, neFor the refractive index of extraordinary ray, test condition is
25 ± 2 DEG C, 589nm, Abbe refractometer test；
Δ ε indicates dielectric anisotropy, Δ ε=ε∥-ε⊥, wherein ε∥For the dielectric constant for being parallel to molecular axis, ε⊥It is vertical
Directly in the dielectric constant of molecular axis, test condition is 25 ± 0.5 DEG C, 20 microns of parallel boxes, INSTEC:ALCT-IR1 test；
γ 1 indicates rotary viscosity (mPas), and test condition is 25 ± 0.5 DEG C, 20 microns of parallel boxes, INSTEC:ALCT-
IR1 test；
ρ indicate resistivity (Ω cm), test condition be 25 ± 2 DEG C, test equipment be TOYO SR6517 high resistant instrument and
LE-21 liquid electrode.
VHR indicates voltage retention (%), and test condition is 20 ± 2 DEG C, voltage is ± 5V, pulse width 10ms, electricity
Press retention time 16.7ms.Test equipment is TOYO Model6254 liquid crystal property comprehensive tester.
τ indicate response time (ms), test equipment be DMS-501, test condition be 25 ± 0.5 DEG C, testing cassete 3.3
Micron IPS testing cassete, electrode spacing and electrode width are 10 microns, and frictional direction and electrode angle are 10 °.
T (%) indicates transmitance, and T (%)=100%* illuminated state (Vop) brightness/light-source brightness, test equipment DMS501 are surveyed
Strip part is 25 ± 0.5 DEG C, and testing cassete is 3.3 microns of IPS testing cassetes, and electrode spacing and electrode width are 10 microns, friction
Direction and electrode angle are 10 °.
The present patent application embodiment liquid crystal monomer structure indicates with code, liquid crystal ring structure, end group, linking group code
Representation method see the table below 1, table 2.
The correspondence code of 1 ring structure of table
The corresponding code of 2 end group of table and the link group
Citing:
Its code is VCCV1；
Its code is C (5) BB (3F) B (3F, 5F) CF2OB(3F,4F,5F)。
The present invention is described in further details combined with specific embodiments below.
Embodiment 1
The formula of embodiment 1 is as shown in table 3 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 3 below.
3 embodiment 1 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Comparative example 1
The formula of comparative example 1 is as shown in table 4 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 4 below.
4 comparative example 1 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Compared with Example 1, comparative example 1 by 1 compounds of formula I 5OSaO2 of embodiment replace with common 3CB B (2F,
3F)O2.Through test data it can be found that other parameters are almost the same compared with Example 1 in the case where, the Δ ε of comparative example 1
14% is had dropped, the decline of Δ ε can cause the raising of driving voltage, increase display equipment energy consumption, reduce the working time.
Embodiment 2
The formula of embodiment 2 is as shown in table 5 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 5 below.
Wherein, it keeps 1 monomeric species of embodiment constant, adjusts ratio, so that the Δ ε of embodiment 2 and comparative example 1 are consistent.
5 embodiment 2 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Through test data it can be found that the Δ ε of embodiment 2 and comparative example 1, Δ n, Cp quite in the case where, γ1
Have dropped nearly 10%, γ1Decline to reduce response time τ it is especially effective.
This point, such as the following table 6 is also demonstrated through the test to three groups of liquid crystal response time τ:
The response time of the different test groups of table 6
| Test group | Embodiment 1 | Comparative example 1 | Embodiment 2 |
| Response time τ | 15ms | 16ms | 12ms |
Wherein, the response time of comparative example 1 slow embodiment 2 close to 33%.
Test proves that the combination of Formulas I and formula II, formula III can effectively improve response speed, reduces the response time, saves energy
Consumption.
Embodiment 3
The formula of embodiment 3 is as shown in table 7 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 7 below.
The composition of the adjustment type II on the basis of embodiment 2 of embodiment 3, to obtain the more excellent formula of clearing point.
7 embodiment 3 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Embodiment 4
The formula of embodiment 4 is as shown in table 8 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 8 below.
8 embodiment 4 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Comparative example 2
The formula of comparative example 2 is as shown in table 9 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 9 below.
Embodiment 4 is a high-penetration formula, is required to Δ ε and ε ⊥, removes Formulas I on the basis of embodiment 4,
It adjusts other components ratio and obtains comparative example 2, so that unanimously then to obtain formula as follows for Δ ε and the ε ⊥ of comparative example 2 and embodiment 4:
9 comparative example 2 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Through comparison it can be found that under other parameters unanimous circumstances, the γ of comparative example 21Increase by 6% compared with embodiment 4,
Survey response time τ slow 10%.
The combination of test proof Formulas I and formula II, formula III can effectively improve the response speed of high-penetration formula, reduce response
Time.
Embodiment 5
The formula of embodiment 5 is as shown in the following table 10, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also shown in Table 10 below.
Embodiment 5 optimizes the composition of compound II on the basis of embodiment 4, to improve its clearing point.
10 embodiment 5 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Embodiment 6
The formula of embodiment 6 is as shown in table 11 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also found in table 11.
11 embodiment 6 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Embodiment 7
The formula of embodiment 7 is as shown in table 12 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also found in table 12.
12 embodiment 7 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
By in embodiment 1 Formulas I structure and segment bounds III structure replace, parameters obtained is equally excellent
Embodiment 8
The formula of embodiment 8 is as shown in table 13 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also found in table 13.
13 embodiment 8 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Embodiment 9
The formula of embodiment 9 is as shown in table 14 below, and liquid-crystal composition is prepared, and gained liquid-crystal composition is filled in survey
It is tested for the property in examination box, test result is also found in table 14.
14 embodiment 9 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Some embodiments
As shown in the following table 15~16, liquid-crystal composition is prepared respectively in the formula of embodiment 10~11, by gained liquid crystal
Composition is filled in testing cassete and is tested for the property, and test result is also listed in table 15~16 respectively.
15 embodiment 10 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
16 embodiment 11 of table prepares raw material compound structural formula classification, code, content and the performance of liquid-crystal composition
Conclusion: liquid-crystal composition of the present invention has lower viscosity, preferably to the stability of light and heat, moderate refraction
Rate and nematic temperature range are suitable for adjusting fast response liquid crystal display part, when being conducive to the work of mobile liquid crystal display device
Between good characteristic.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (12)
1. a kind of liquid-crystal composition, which is characterized in that the liquid-crystal composition includes the change shown in formula I of at least one structural formula
Close object, at least one structural formula such as Formula II compound represented and at least one structural formula such as formula III compound represented:
Wherein,
R1、R2Each independently represent the alkyl that carbon atom number is 1~5, any one or more disjunct CH2By cyclopenta,
The alkenyl that the alkyl or carbon atom number that the carbon atom number that cyclobutyl or cyclopropyl replace is 1~5 are 3~5；R1And R2In it is any
Hydrogen on carbon atom can be replaced by fluorine each independently；
X indicates S, O ,-CH2CH2Or-CH2O-；
R3、R4、R5、R6Each independently represent the alkoxy, carbon atom that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5
The alkenyloxy that the alkenyl or carbon atom number that number is 2~5 are 3~5；R3、R4、R5And R6In hydrogen on any carbon atom can be each
From independently being replaced by fluorine；
Z1Indicate singly-bound or-CH2O-；
M, o, p each independently represent 0,1 or 2；
Each independently represent any one or more in following radicals:
2. liquid-crystal composition according to claim 1, which is characterized in that the structural formula is the structure of the compound of Formulas I
Formula is specially Formulas I -1 at least one of to I-4:
Wherein, R21、R22Each independently represent the alkyl that carbon atom number is 1~5, any one or more disjunct CH2Quilt
In the alkenyl that the alkyl or carbon atom number that the carbon atom number that cyclopenta, cyclobutyl or cyclopropyl replace is 1~5 are 3~5
Any group；R21And R22In hydrogen on any carbon atom can be replaced each independently by fluorine.
3. liquid-crystal composition according to claim 1, which is characterized in that the structural formula is the structure of the compound of Formula II
Formula is specially Formula II -1 at least one of to II-5:
Wherein,
R23、R24Each independently representing alkoxy, carbon atom number that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5 is
The alkenyloxy that 2~5 alkenyl or carbon atom number is 3~5；R23And R24In hydrogen on any carbon atom can be each independently
Replaced by fluorine.
4. liquid-crystal composition according to claim 1, which is characterized in that the structural formula is the knot of the compound of formula III
Structure formula is specially formula III -1 at least one of to III-10:
Wherein,
R23、R24Each independently representing alkoxy, carbon atom number that alkyl, carbon atom number that carbon atom number is 1~5 are 1~5 is
The alkenyloxy that 2~5 alkenyl or carbon atom number is 3~5；R23And R24In hydrogen on any carbon atom can be each independently
Replaced by fluorine.
5. liquid-crystal composition according to claim 1, which is characterized in that in the liquid-crystal composition, structural formula is Formulas I
The mass percentage content of compound is 1~15%, structural formula be the mass percentage content of the compound of Formula II be 20~
80%, structural formula is that the mass percentage content of the compound of formula III is 5~70%.
6. liquid-crystal composition according to claim 1, which is characterized in that the liquid-crystal composition also includes one or more
Structural formula is the compound of formula IV:
Wherein,
R7、R8Each independently represent F, the alkyl that carbon atom number is 1~5, any one or more disjunct CH2By ring penta
The alkyl that the carbon atom number that base, cyclobutyl or cyclopropyl replace is 1~5, the alkyl that fluorine-substituted carbon atom number is 1~5, carbon are former
The alkoxy that subnumber is 1~5, the alkoxy that fluorine-substituted carbon atom number is 1~5, the alkenyl that carbon atom number is 2~5, fluorine take
The alkenyl that the carbon atom number in generation is 2~5, the alkenyloxy or fluorine-substituted carbon atom number that carbon atom number is 3~5 are 3~5
Alkenyloxy, but R7And R8It is not simultaneously F；
It each independently represents
N indicates 1 or 2；
Z2、Z3Each independently represent singly-bound ,-CF2O-、-CH2CH2Or-CH2O-。
7. liquid-crystal composition according to claim 6, which is characterized in that the structural formula is the structure of the compound of formula IV
Formula is specially at least one of following formula I V-1~IV-22:
Wherein, X1、X2Each independently represent H or F, but X in same structure formula1、X2Simultaneously it is not H, is not also simultaneously F；
(F) H or F is indicated；
R51, R52Each independently represent the alkyl that carbon atom number is 1~5, any one or more disjunct CH2By ring penta
The alkyl that the carbon atom number that base, cyclobutyl or cyclopropyl replace is 1~5, the alkyl that fluorine-substituted carbon atom number is 5, carbon atom
The alkoxy that number is 1~5, the alkoxy that fluorine-substituted carbon atom number is 1~5, the alkenyl that carbon atom number is 2~5, fluorine replace
Carbon atom number be 2~5 alkenyl, the chain that the alkenyloxy or fluorine-substituted carbon atom number that carbon atom number is 3~5 are 3~5
Alkenyloxy group.
8. liquid-crystal composition according to claim 6, which is characterized in that in the liquid-crystal composition, structural formula is Formulas I
The mass percentage content of compound is 1~15%, structural formula be the mass percentage content of the compound of Formula II be 20~
80%, structural formula is that the mass percentage content of the compound of formula III is 5~70%, and structural formula is the matter of the compound of formula IV
Measuring degree is 5~50%.
9. liquid-crystal composition according to claim 1 or 6, which is characterized in that the liquid-crystal composition also include it is a kind of or
Various structures formula is the compound of Formula V:
Wherein,
R9、R10It is former to each independently represent alkyl, carbon that alkyl, fluorine-substituted carbon atom number that carbon atom number is 1~5 are 1~5
Alkenyl that alkoxy that alkoxy that subnumber is 1~5, fluorine-substituted carbon atom number are 1~5, carbon atom number are 2~5, fluorine take
The alkenyloxy or fluorine-substituted carbon atom number that alkenyl that the carbon atom number in generation is 2~5, carbon atom number are 3~5 are 3~5
Alkenyloxy；
Z4Indicate singly-bound or-CF2O-；
Q indicates 2 or 3；
It indicates
10. liquid-crystal composition according to claim 9, which is characterized in that the structural formula is the structure of the compound of Formula V
Formula is specially at least one of following formula V-1~IV-28:
Wherein,
R71、R72It is former to each independently represent alkyl, carbon that alkyl, fluorine-substituted carbon atom number that carbon atom number is 1~5 are 1~5
Alkenyl that alkoxy that alkoxy that subnumber is 1~5, fluorine-substituted carbon atom number are 1~5, carbon atom number are 2~5, fluorine take
The alkenyloxy or fluorine-substituted carbon atom number that alkenyl that the carbon atom number in generation is 2~5, carbon atom number are 3~5 are 3~5
Alkenyloxy.
11. liquid-crystal composition according to claim 9, which is characterized in that in the liquid-crystal composition, structural formula is Formulas I
The mass percentage content of compound be 1~15%, structural formula be the mass percentage content of the compound of Formula II be 20~
80%, structural formula is that the mass percentage content of the compound of formula III is 5~70%, and structural formula is the matter of the compound of formula IV
Measuring degree is 0~50%, and structural formula is that the mass percentage content of the compound of Formula V is 5~50%.
12. a kind of liquid crystal display device, which is characterized in that the liquid crystal display device is by any one of such as claim 1~11 institute
The liquid-crystal composition stated is prepared.
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| CN112300811A (en) * | 2019-08-01 | 2021-02-02 | 江苏和成显示科技有限公司 | Liquid crystal composition and liquid crystal display device |
| CN112391173A (en) * | 2019-08-14 | 2021-02-23 | 江苏和成显示科技有限公司 | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof |
| CN112391171A (en) * | 2019-08-14 | 2021-02-23 | 江苏和成显示科技有限公司 | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof |
| CN112920812A (en) * | 2021-02-01 | 2021-06-08 | 烟台显华化工科技有限公司 | Negative dielectric anisotropy liquid crystal composition and liquid crystal display device |
| CN113403088A (en) * | 2021-06-17 | 2021-09-17 | 烟台显华化工科技有限公司 | Negative dielectric anisotropy liquid crystal composition and liquid crystal display device |
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| CN112300811A (en) * | 2019-08-01 | 2021-02-02 | 江苏和成显示科技有限公司 | Liquid crystal composition and liquid crystal display device |
| CN112300811B (en) * | 2019-08-01 | 2022-07-15 | 江苏和成显示科技有限公司 | Liquid crystal composition and liquid crystal display device |
| CN112391173A (en) * | 2019-08-14 | 2021-02-23 | 江苏和成显示科技有限公司 | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof |
| CN112391171A (en) * | 2019-08-14 | 2021-02-23 | 江苏和成显示科技有限公司 | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof |
| CN112391171B (en) * | 2019-08-14 | 2023-07-18 | 江苏和成显示科技有限公司 | Liquid crystal composition having positive dielectric anisotropy and liquid crystal display device thereof |
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| CN116814277B (en) * | 2023-08-29 | 2023-12-26 | 烟台显华科技集团股份有限公司 | High-gradient high-brightness negative dielectric anisotropy liquid crystal composition and application thereof |
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