CN104031654B - Containing the liquid-crystal composition of difluoro methylene based compound - Google Patents
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Abstract
The present invention discloses a kind of liquid-crystal composition containing difluoro methylene based compound, comprises the component A being made up of the Dielectric positive compound shown in general formula I and general formula I I, the B component being made up of the compound shown in one or more general formula III, the component C that is made up of the compound shown in one or more general formula Is V; Liquid-crystal composition excellent performance provided by the invention, there is wider nematic temperature range, suitable positive dielectric anisotropy, suitable optical anisotropy, very high electric charge maintenance rate, fast response time, rotary viscosity is low, the features such as consumed power is low, the composition of the present invention can be applicable in liquid-crystal display, is specially adapted to active matrix T N-TFT, the IPS-TFT indicating meter of response fast.
Description
Technical field
The invention belongs to liquid crystalline cpd field, it is specifically related to a kind of liquid-crystal composition containing Dielectric positive liquid crystalline cpd being applied in liquid-crystal display.
Background technology
Liquid crystal display device is divided into following modes according to display mode: twisted nematic (TN) pattern, super twisted nematic (STN) pattern, coplanar pattern (IPS), vertical orientation (VA) pattern. No matter which kind of display format all needs liquid-crystal composition to have following characteristic: chemistry, physical properties are stablized; Viscosity is low; There is suitable Δ ε; Suitable index of refraction Δ n; Good with the intermiscibility of other liquid crystalline cpds.
As liquid crystal material, it is necessary to there is good chemistry and thermostability and to the stability of electric field and electromagnetic radiation. And as thin-film transistor technologies (TFT-LCD) liquid crystal material, not only need to have as above outside stability, also should have the performances such as wider nematic temperature range, suitable degree of birefringence anisotropy, very high resistivity, good anti-ultraviolet property, high electric charge maintenance rate and low-steam pressure.
For thin-film transistor technologies (TFT-LCD) Application Areas, although market is very huge in recent years, technology is also ripe gradually, meanwhile, due to the continuous progress of liquid crystal material technology, the requirement of technique of display also in continuous raising, especially in realization response fast, is reduced driving voltage to reduce the aspects such as power consumption by people.
Liquid crystal material as one of important photoelectron material of liquid-crystal display, the effect that the performance improving liquid-crystal display is important. Any display liquid-crystal composition all requires wider liquid crystal state temperature, higher stability, than better suited viscosity, electric field has response speed faster.But also use in a liquid crystal display separately without any single liquid crystal material so far, and the composition that need not develop other performance just can meet performance requriements. Therefore, liquid-crystal display development is had important meaning by the liquid crystal material continually developing new excellent performance.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of liquid-crystal composition containing Dielectric positive liquid crystalline cpd, this liquid-crystal composition has big positive dielectric anisotropy, low-refraction anisotropy, and there is higher clearing point, low rotary viscosity, and high electric charge maintenance rate can be maintained at high-temperature area, maintain the fast time of response at low-temperature region.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Containing the liquid-crystal composition of difluoro methylene based compound, it is characterised in that:
Comprise the component A being made up of the Dielectric positive compound shown in general formula I and general formula I I, the B component being made up of the compound shown in one or more general formula III, the component C that is made up of the compound shown in one or more general formula Is V;
Wherein,
R1、R5It is respectively H or C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Arbitrary group in straight alkenyloxy; Or it is C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Any H in straight alkenyloxy replaced by F after arbitrary group;
R2、R3、R4、R6Be respectively following 1.～4. described group wherein any one:
1.: H, Cl, F, CN, OCN, OCF3、CF3、CHF2、CH2F、OCHF2、SCN、NCS、SF5,
2.: C1～C15Straight chained alkyl, C1～C15Unbranched alkoxy, C2～C15Straight-chain alkenyl, C2～C15Straight alkenyloxy,
3.: the one or more-CH in group described in 2.2-substituted rear and that Sauerstoffatom is directly not connected group by-CH=CH-,-C ≡ C-,-COO-,-OOC-, sub-cyclobutyl, cyclopentylidene ,-O-or-S-,
4.: any H of group described in 2. or 3. replaced by F, Cl after group;
(F) it is H or F;
Z1、Z2、Z3It is respectively singly-bound ,-CH2-、-CH2-CH2-、-(CH2)3-、-(CH2)4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-CF2O-、-OCH2-、-CH2O-、-OCF2-、-CF2CH2-、-CH2CF2-、-C2F4-, one in-CF=CF-;
A1、A2、A3、A4、A5、A6、A7、A8、A9It is respectively In one;
A, b, d, e, f, g, h are respectively 0 or 1 or 2 or 3; C is 1 or 2, and a+b+c≤5.
Further improvement of the present invention is: in liquid-crystal composition, component A accounts for the weight percentage of liquid-crystal composition is 1%～80%, it is 1%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 1%～50%, said components A, the weight percentage of B component, component C is 100%.
Further improvement of the present invention is: it is 1%～50% that the compound shown in described general formula I accounts for the weight percentage of liquid-crystal composition; It is 1%～50% that compound shown in described general formula I I accounts for the weight percentage of liquid-crystal composition.
Further improvement of the present invention is: organizing the weight percentage that part A accounts for liquid-crystal composition in described liquid-crystal composition is 5%～65%. It is 25%～60%, component C account for that the weight percentage of liquid-crystal composition is 5%～50%, said components A, the weight percentage of B component, component C is 100% that B component accounts for the weight percentage of liquid-crystal composition.
Further improvement of the present invention is: organizing the weight percentage that part A accounts for liquid-crystal composition in described liquid-crystal composition is 10%～40%. It is 30%～60%, component C account for that the weight percentage of liquid-crystal composition is 10%～50%, said components A, the weight percentage of B component, component C is 100% that B component accounts for the weight percentage of liquid-crystal composition.
Further improvement of the present invention is: in liquid-crystal composition, component A accounts for the weight percentage of liquid-crystal composition is 18%～29%, it is 33%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 18%～43%, said components A, the weight percentage of B component, component C is 100%.
Further improvement of the present invention is: also comprise the stablizer being made up of phenol antioxidant and/or benzotriazole category uv-absorbing agent in liquid-crystal composition, described stablizer account for component A, B component, component C weight sum 0.01%～0.5%.
Owing to have employed technique scheme, the technical progress acquired by the present invention is:
The Nematic phase liquid crystal composition excellent performance obtained by the present invention, has short overall response time, lower voltage, high resistivity and voltage retention. By the adjustment to each component concentration, Nematic phase liquid crystal composition of the present invention can have different threshold voltages and birefringent characteristic, uses under being convenient to thick at different liquid crystal cell in different driving voltage, it is possible to meets the different demand of client. This liquid-crystal composition shows excellent high-temperature stability and ultraviolet stability simultaneously.
The liquid-crystal composition of the present invention, contains in general formula IGroup, general formula I I containGroup, adopts compound shown in general formula I and general formula I I to combine mutually, and gained liquid-crystal composition has obviously higher high-temperature stability and ultraviolet stability, it is possible to significantly promote the quality of associated liquid crystal element. May be used for manufacturing Active Matrix Display, it is preferable that by the matrix addressing of thin film transistor (TFT), it is specially adapted to manufacture active matrix T N-TFT, IPS-TFT or FFS-TFT liquid crystal display device and the liquid-crystal display of response fast.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated.
The concrete meaning of the symbol in embodiment and test condition are as follows:
Cp: unit DEG C, represents the clearing point of liquid crystal.
S-N: unit DEG C, represents that the crystalline state of liquid crystal is to nematic fusing point.
Δ n: optical anisotropy, Δ n=no-ne, wherein, no is the specific refractory power of ordinary light, and ne is the specific refractory power of extraordinary ray, and test condition is, 589nm, 25 ± 0.5 DEG C.
Δ ε: dielectric anisotropy, Δ ε=ε∥-ε⊥, wherein, ε∥For being parallel to the specific inductivity of molecular axis, ε⊥For being perpendicular to the specific inductivity of molecular axis, test condition is 25 ± 0.5 DEG C; 1KHz; HP4284A; 5.2 the left-handed box of micron TN.
γ1: rotary viscosity, unit mPa s, test condition is 25 ± 0.5 DEG C.
Containing the liquid-crystal composition of difluoro methylene based compound, comprise the component A being made up of the Dielectric positive compound shown in general formula I and general formula I I, the B component being made up of the compound shown in one or more general formula III, the component C that is made up of the compound shown in one or more general formula Is V;
Wherein,
R1、R5It is respectively H or C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Arbitrary group in straight alkenyloxy; Or it is C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Any H in straight alkenyloxy replaced by F after arbitrary group;
R2、R3、R4、R6Be respectively following 1.～4. described group wherein any one:
1.: H, Cl, F, CN, OCN, OCF3、CF3、CHF2、CH2F、OCHF2、SCN、NCS、SF5,
2.: C1～C15Straight chained alkyl, C1～C15Unbranched alkoxy, C2～C15Straight-chain alkenyl, C2～C15Straight alkenyloxy,
3.: the one or more-CH in group described in 2.2-substituted rear and that Sauerstoffatom is directly not connected group by-CH=CH-,-C ≡ C-,-COO-,-OOC-, sub-cyclobutyl, cyclopentylidene ,-O-or-S-,
4.: any H of group described in 2. or 3. replaced by F, Cl after group;
(F) it is H or F;
Z1、Z2、Z3It is respectively singly-bound ,-CH2-、-CH2-CH2-、-(CH2)3-、-(CH2)4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-CF2O-、-OCH2-、-CH2O-、-OCF2-、-CF2CH2-、-CH2CF2-、-C2F4-, one in-CF=CF-;
A1、A2、A3、A4、A5、A6、A7、A8、A9It is respectively In one;
A, b, d, e, f, g, h are respectively 0 or 1 or 2 or 3; C is 1 or 2, and a+b+c≤5.
In the liquid-crystal composition containing difluoro methylene based compound of the present invention, component A accounts for the weight percentage of liquid-crystal composition is 1%～80%, it is 1%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 1%～50%, said components A, the weight percentage of B component, component C is 100%. .
It is 1%～50% that the compound shown in liquid-crystal composition formula of I containing difluoro methylene based compound of the present invention accounts for the weight percentage of liquid-crystal composition; It is 1%～50% that compound shown in described general formula I I accounts for the weight percentage of liquid-crystal composition.
Organizing the weight percentage that part A accounts for liquid-crystal composition in the liquid-crystal composition containing difluoro methylene based compound of the present invention is 5%～65%. It is 25%～60%, component C account for that the weight percentage of liquid-crystal composition is 5%～50%, said components A, the weight percentage of B component, component C is 100% that B component accounts for the weight percentage of liquid-crystal composition.
Organizing the weight percentage that part A accounts for liquid-crystal composition in the liquid-crystal composition containing difluoro methylene based compound of the present invention is 10%～40%. It is 30%～60%, component C account for that the weight percentage of liquid-crystal composition is 10%～50%, said components A, the weight percentage of B component, component C is 100% that B component accounts for the weight percentage of liquid-crystal composition.
In the liquid-crystal composition containing difluoro methylene based compound of the present invention, component A accounts for the weight percentage of liquid-crystal composition is 18%～29%, it is 33%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 18%～43%, said components A, the weight percentage of B component, component C is 100%.
In addition, the present invention also comprises, containing the liquid-crystal composition of difluoro methylene based compound, the stablizer being made up of phenol antioxidant and/or benzotriazole category uv-absorbing agent, described stablizer account for component A, B component, component C weight sum 0.01%～0.5%.
The present invention's can preferred one or more in compound shown in following formula I-1～formula I-9 containing compound shown in difluoro methylene based compound formula of I, compound shown in general formula I I can preferred one or more in compound shown in following formula II-1～formula II12, compound shown in general formula III can preferred one or more in compound shown in following formula III-1～formula III-9, compound shown in general formula I V can preferred one or more in compound shown in following formula IV-1～formula IV-12
Wherein,
R1, (F) implication as hereinbefore;
R3、R4、R5It is respectively H or C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Arbitrary group in straight alkenyloxy;
R2、R6It is respectively H, Cl, F, CN, OCN, OCF3、CF3、CHF2、CH2F、OCHF2、SCN、NCS、SF5In one.
The present invention's can more preferably one or more in compound shown in following formula I-1-1～formula I-9-5 containing compound shown in difluoro methylene based compound formula of I, compound shown in general formula I I be specially in compound shown in following formula II-1-1～formula II-12-1 one or more
The each component adopted in following embodiment 1～6, all can be synthesized by known method, or be obtained by commercial sources.These synthetic technologys are conventional, and each liquid crystalline cpd obtained meets electrical type compound standard after tested.
According to the weight percentage of each liquid-crystal composition that following examples 1～6 specify, prepare liquid-crystal composition. The preparation of described liquid-crystal composition carries out according to the ordinary method of this area, and as taked heating, ultrasonic wave, ratio mixing is obtained according to the rules for the modes such as suspension.
Embodiment 1
By the liquid-crystal composition 1 of following listed each compound and the invention of weight percentage preparation cost,
Preparing liquid-crystal composition 1-1: substantially identical with content with the component of liquid-crystal composition 1, its difference is: by compound of Formula IReplacement is
Being filled between liquid-crystal display two substrates respectively to carry out performance test by liquid-crystal composition 1, liquid-crystal composition 1-1, test result sees the following form.
| Liquid-crystal composition | S-N | Δn | Cp | Δε | γ1 |
| Liquid-crystal composition 1 | ≤-40℃ | 0.105 | 100℃ | 8.6 | 91.6mPa·s |
| Liquid-crystal composition 1-1 | ≤-40℃ | 0.103 | 97℃ | 8.4 | 87.6mPa·s |
By above-mentioned performance test parameter it will be seen that this liquid-crystal composition 1 has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast very much. The performance perameter of liquid-crystal composition 1 has some improvement compared with the performance perameter of liquid-crystal composition 1-1.
Liquid-crystal composition 1, liquid-crystal composition 1-1 are carried out high temperature ultraviolet ageing test respectively. Ultraviolet ageing condition is: 5000mJ, and high temperature ageing condition is: 150 DEG C, 1h; Liquid-crystal composition, after high temperature ageing/ultraviolet ageing processes, tests its voltage retention (VHR), and test condition is: 60 DEG C, 10V, 6Hz, and testing tool is TOYOMode16254A liquid crystal property integration test instrument. Test result sees the following form.
| Liquid-crystal composition | Original VHR | VHR after high temperature | VHR after ultraviolet |
| Liquid-crystal composition 1 | 96.71 | 88.95 | 90.97 |
| Liquid-crystal composition 1-1 | 94.77 | 86.59 | 88.44 |
By the correlation data in upper table it may be seen that than liquid-crystal composition 1-1, liquid-crystal composition 1-2, liquid-crystal composition 1 has obviously higher high-temperature stability and ultraviolet stability, it is possible to significantly promote the quality of associated liquid crystal element.
Embodiment 2
By the liquid-crystal composition 2 of following listed each compound and the invention of weight percentage preparation cost,
Preparing liquid-crystal composition 2-1: substantially identical with content with the component of liquid-crystal composition 2, its difference is: by compound of Formula IReplacement is
Being filled between liquid-crystal display two substrates respectively to carry out performance test by liquid-crystal composition 2, liquid-crystal composition 2-1, test result sees the following form.
| Liquid-crystal composition | S-N | Δn | c.p. | Δε | γ1 |
| Liquid-crystal composition 2 | ≤-40℃ | 0.095 | 99℃ | 7.8 | 94.6mPa·s |
| Liquid-crystal composition 2-1 | ≤-40℃ | 0.094 | 97℃ | 7.2 | 89.5mPa·s |
By above-mentioned performance test parameter it will be seen that the liquid-crystal composition 2 of the present invention has moderate degree of birefringence, suitably high positive dielectric anisotropy, very low rotation viscosity and very fast time of response, it is applicable to the TN-TFT indicating meter of response fast. But the performance perameter of liquid-crystal composition 2 is compared than the performance perameter of liquid-crystal composition 2-1 and is had greatly improved.
Liquid-crystal composition 2, liquid-crystal composition 2-1 are carried out high temperature ultraviolet ageing test respectively. Ultraviolet ageing condition is: 5000mJ, and high temperature ageing condition is: 150 DEG C, 1h; Liquid-crystal composition, after high temperature ageing/ultraviolet ageing processes, tests its voltage retention (VHR), and test condition is: 60 DEG C, 10V, 6Hz, and testing tool is TOYOMode16254A liquid crystal property integration test instrument. Test result sees the following form.
| Liquid-crystal composition | Original VHR | VHR after high temperature | VHR after ultraviolet |
| Liquid-crystal composition 2 | 94.44 | 87.4 | 88.25 |
| Liquid-crystal composition 2-1 | 90.46 | 85.08 | 84.44 |
By the correlation data in upper table it may be seen that than liquid-crystal composition 2-1, liquid-crystal composition 2 has obviously higher high-temperature stability and ultraviolet stability, it is possible to significantly promote the quality of associated liquid crystal element.This liquid-crystal composition 2 has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to very much TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast.
Embodiment 3
By the liquid-crystal composition of following listed each compound and the invention of weight percentage preparation cost,
Being filled between liquid-crystal display two substrates by above-mentioned liquid-crystal composition and carry out performance test, test result is: Cp:100 DEG C; S-N :≤-40 DEG C; Δ n:0.100; Δ ε: 10.0; γ1: 105.5mPa s.
This liquid-crystal composition has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to very much TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast.
Embodiment 4
By the liquid-crystal composition of following listed each compound and the invention of weight percentage preparation cost,
Being filled between liquid-crystal display two substrates by above-mentioned liquid-crystal composition and carry out performance test, test result is: Cp:105 DEG C; S-N :≤-40 DEG C; Δ n:0.099; Δ ε: 9.2; γ1: 97.8mPa s.
This liquid-crystal composition has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to very much TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast.
Embodiment 5
By the liquid-crystal composition of following listed each compound and the invention of weight percentage preparation cost,
Being filled between liquid-crystal display two substrates by above-mentioned liquid-crystal composition and carry out performance test, test result is: Cp:100 DEG C; S-N :≤-30 DEG C; Δ n:0.112; Δ ε: 9.5; γ1: 97.7mPa s.
This liquid-crystal composition has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to very much TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast.
Embodiment 6
By the liquid-crystal composition of following listed each compound and the invention of weight percentage preparation cost,
Being filled between liquid-crystal display two substrates by above-mentioned liquid-crystal composition and carry out performance test, test result is: Cp:100 DEG C; S-N :≤-40 DEG C; Δ n:0.085; Δ ε: 8.0; γ1: 93mPa s.
This liquid-crystal composition has moderate degree of birefringence, suitably high positive dielectric, very low rotation viscosity, the very fast time of response, is therefore applicable to very much TN-TFT, IPS-TFT and FFS-TFT indicating meter of response fast.
Above 6 embodiments, optical anisotropy is moderate, all has big dielectric anisotropy, higher clearing point, good low-temperature stability, and low rotary viscosity maintains the fast time of response at low-temperature region. The use temperature of TN-TFT, IPS-TFT or FFS-TFT liquid crystal mode can be widened, and there is time of response and wider visual angle scope faster, be highly suitable for TN-TFT, IPS-TFT and FFS-TFT display of low voltage drive.
Although the present invention only lists particular compound and the proportioning consumption (weight percentage) thereof of above-mentioned 6 embodiments, and carried out performance test, but the liquid-crystal composition of the present invention can on the basis of above-described embodiment, utilize the liquid crystalline cpd representated by general formula I involved in the present invention, II, III, IV and general formula I, the preferred liquid crystalline cpd of II, III, IV carries out expanding further and amendment, by suitably being adjusted by its proportioning consumption, the object of the present invention all can be reached.
Claims (5)
1. containing the liquid-crystal composition of difluoro methylene based compound, it is characterised in that:
Comprising weight percentage that be made up of, that account for liquid-crystal composition the Dielectric positive compound shown in formula I-1～I-9 and general formula II-1～II-12 is the component A of 5%～65%, weight percentage that be made up of the compound shown in one or more general formula III-1～III-9, that account for liquid-crystal composition is the B component of 25%～60%, and weight percentage that be made up of the compound shown in one or more general formulae IV-1～IV-12, that account for liquid-crystal composition is the component C of 5%～50%;It is 1%～50% that compound shown in described formula I-1～I-9 accounts for the weight percentage of liquid-crystal composition; It is 1%～50% that compound shown in described general formula II-1～II-12 accounts for the weight percentage of liquid-crystal composition;
Wherein,
R1It is respectively H or C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl, C3～C8Arbitrary group in straight alkenyloxy;
R3、R4、R5It is respectively H or C1～C10Straight chained alkyl, C1～C10Unbranched alkoxy, C2～C10Straight-chain alkenyl;
R2、R6It is respectively H, Cl, F, CN, OCN, OCF3、CF3、CHF2、CH2F、OCHF2、SCN、NCS、SF5In one;
(F) it is H or F.
2. the liquid-crystal composition containing difluoro methylene based compound according to claim 1, it is characterized in that: organizing the weight percentage that part A accounts for liquid-crystal composition in described liquid-crystal composition is 10%～40%, it is 30%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 10%～50%, said components A, the weight percentage of B component, component C is 100%.
3. the liquid-crystal composition containing difluoro methylene based compound according to claim 1, it is characterized in that: in liquid-crystal composition, component A accounts for the weight percentage of liquid-crystal composition is 18%～29%, it is 33%～60% that B component accounts for the weight percentage of liquid-crystal composition, component C accounts for that the weight percentage of liquid-crystal composition is 18%～43%, said components A, the weight percentage of B component, component C is 100%.
4. according to the arbitrary item of claims 1 to 3 containing the liquid-crystal composition of difluoro methylene based compound, it is characterized in that: liquid-crystal composition also comprises the stablizer being made up of phenol antioxidant and/or benzotriazole category uv-absorbing agent, described stablizer account for component A, B component, component C weight sum 0.01%～0.5%.
5. the liquid-crystal composition containing difluoro methylene based compound according to claim 1, it is characterised in that:
Compound shown in described formula I-1～I-9 be specially in compound shown in following formula I-1-1～formula I-9-5 one or more,
Compound shown in described general formula II-1～II-12 be specially in compound shown in following formula II-1-1～formula II-12-1 one or more,
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| CN104449761A (en) | 2014-11-20 | 2015-03-25 | 蒋战英 | Liquid crystal compound containing difluoromethoxy bridged bonds and application thereof |
| CN104498053B (en) | 2014-11-27 | 2016-05-11 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal compounds that contains difluoro-methoxy bridged bond, composition and application thereof |
| CN104479688B (en) | 2014-11-27 | 2016-06-29 | 北京八亿时空液晶科技股份有限公司 | A kind of containing the liquid-crystal compounds of difluoro-methoxy bridged bond, compositions and application thereof |
| CN104479689A (en) * | 2014-12-29 | 2015-04-01 | 石家庄诚志永华显示材料有限公司 | Liquid crystal composition |
| KR20170000052A (en) * | 2015-06-22 | 2017-01-02 | 삼성디스플레이 주식회사 | Compound, liquid crystal composition comprising the same and liquid crystal display device comprising the same |
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