CN102433130A - Negative dielectric anisotropic liquid crystal composition and use thereof - Google Patents
Negative dielectric anisotropic liquid crystal composition and use thereof Download PDFInfo
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- CN102433130A CN102433130A CN201110285598XA CN201110285598A CN102433130A CN 102433130 A CN102433130 A CN 102433130A CN 201110285598X A CN201110285598X A CN 201110285598XA CN 201110285598 A CN201110285598 A CN 201110285598A CN 102433130 A CN102433130 A CN 102433130A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 111
- 239000000203 mixture Substances 0.000 title claims abstract description 26
- 150000001875 compounds Chemical class 0.000 claims abstract description 70
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 125000004432 carbon atom Chemical group C* 0.000 claims description 16
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 125000003545 alkoxy group Chemical group 0.000 claims description 4
- 125000002769 thiazolinyl group Chemical group 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 6
- HTSGKJQDMSTCGS-UHFFFAOYSA-N 1,4-bis(4-chlorophenyl)-2-(4-methylphenyl)sulfonylbutane-1,4-dione Chemical compound C1=CC(C)=CC=C1S(=O)(=O)C(C(=O)C=1C=CC(Cl)=CC=1)CC(=O)C1=CC=C(Cl)C=C1 HTSGKJQDMSTCGS-UHFFFAOYSA-N 0.000 abstract 1
- FKLJPTJMIBLJAV-UHFFFAOYSA-N Compound IV Chemical compound O1N=C(C)C=C1CCCCCCCOC1=CC=C(C=2OCCN=2)C=C1 FKLJPTJMIBLJAV-UHFFFAOYSA-N 0.000 abstract 1
- NLFBCYMMUAKCPC-KQQUZDAGSA-N ethyl (e)-3-[3-amino-2-cyano-1-[(e)-3-ethoxy-3-oxoprop-1-enyl]sulfanyl-3-oxoprop-1-enyl]sulfanylprop-2-enoate Chemical compound CCOC(=O)\C=C\SC(=C(C#N)C(N)=O)S\C=C\C(=O)OCC NLFBCYMMUAKCPC-KQQUZDAGSA-N 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 20
- 230000000007 visual effect Effects 0.000 description 8
- 0 *C(CC1)CCC1c(ccc(*)c1F)c1F Chemical compound *C(CC1)CCC1c(ccc(*)c1F)c1F 0.000 description 7
- 230000003287 optical effect Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical class C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- HZNQSWJZTWOTKM-UHFFFAOYSA-N 2,3,4-trimethoxybenzoic acid Chemical compound COC1=CC=C(C(O)=O)C(OC)=C1OC HZNQSWJZTWOTKM-UHFFFAOYSA-N 0.000 description 1
- 241001269238 Data Species 0.000 description 1
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- UVZUFUGNHDDLRQ-LLHZKFLPSA-N cholesteryl benzoate Chemical compound O([C@@H]1CC2=CC[C@H]3[C@@H]4CC[C@@H]([C@]4(CC[C@@H]3[C@@]2(C)CC1)C)[C@H](C)CCCC(C)C)C(=O)C1=CC=CC=C1 UVZUFUGNHDDLRQ-LLHZKFLPSA-N 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- -1 fluorine terphenyl compound Chemical class 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
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Abstract
The invention relates to the field of liquid crystal display, and specially, relates to a negative dielectric anisotropic liquid crystal composition and a use thereof. The negative dielectric anisotropic liquid crystal composition comprises 1 to 50% of a compound I, 1 to 70% of a compound II, 0 to 50% of a compound III, 1 to 50% of a compound IV and 0 to 20% of a compound V. The negative dielectric anisotropic liquid crystal composition has excellent performances, short response time and a high contrast ratio, and can be utilized for multiple display modes.
Description
Technical field
The present invention relates to field of liquid crystals, be specifically related to a kind of negative dielectric anisotropy liquid crystal composition.Said liquid-crystal compsn is applicable to liquid crystal indicator.
Background technology
Austrian botanist Friedrich Reinitzer had found first kind of liquid crystal material TRIMETHOXY BENZOIC ACID (FOR MANUFACTURING OF T.M. SUV (cholesteryl benzoate) in 1888; Promptly liquid crystal that is to say that a kind of material has possessed flowability and certain alignment characteristics of similar crystalline of liquid simultaneously.M.Born (1916) and K.Lichtennecker (nineteen twenty-six) have found and have studied the dielectric anisotropy of liquid crystal.1932, W.Kast was divided into two big types of positive and negative property with nematic phase in view of the above.Nineteen twenty-seven, V.Freedericksz and V.Zolinao find that nematic liquid crystal under electric field (or magnetic field) effect, deformation takes place and have voltage threshold (Freederichsz transformation).This making that is found to be liquid-crystal display provides foundation.Utilize the electrooptic effect of liquid crystal, it is LCD that the Britain scientist has made first liquid-crystal display in last century.Compare with traditional CRT, LCD not only volume is little, and thin thickness, in light weight, power consumption are less, WV is low and radiationless, and flicker free also can directly be mated with the CMOS unicircuit.Because advantage is numerous, LCD got into the desktop computer Application Areas since 1998.Nearly decades, particularly fast development of information technology and people are to the continuous pursuit of information display mode in recent ten years, and liquid-crystal display has obtained the swiftest and the most violent development.Today, liquid-crystal display just is illustrated in face of the people with colourful form, and its many products are because its excellent characteristic makes its pursuit that is just becoming fashion, and processs the commodity that hand can get in the market.
Arrangement mode according to liquid crystal molecule; Often be divided into liquid-crystal display: the TN at narrow visual angle (Twisted Nematic); STN (Super Twisted Nematic); DSTN (Double layer Super Twisted Nematic) etc., and used liquid-crystal compsn is the dielectric positively charged in the liquid-crystal display at these narrow visual angles; The IPS at wide visual angle (In-Plane Switching); VA (Vertical Alignment); FFS (Fringe Filed Switching) etc.; For the liquid-crystal display at wide visual angle, employed liquid crystal media majority all is a negative dielectric anisotropic, this wherein IPS both can use the liquid-crystal compsn of negative dielectric anisotropic also can use the liquid crystal of positive dielectric anisotropy.From the type of drive of liquid crystal panel, at present modal is exactly that TFT (Thin Film Transistor) type drives, and the passive drive before comparing can realize meticulousr display effect.Present most liquid-crystal display, LCD TV and part mobile phone all adopt TFT to drive.The many TN patterns with narrow visual angle of liquid-crystal display, LCD TV is used VA, the IPS isotype at wide visual angle more.They are commonly referred to as TFT-LCD.
The liquid-crystal display that uses at present mainly is the TN type, and this nematic pattern exists the defective of contrast gradient view angle dependency, and so-called VA vertical orientation indicating meter has wideer visual angle.Liquid-crystal compsn based on this negative dielectric anisotropic has had wide application market and prospect, has higher requirement equally for the research and development of liquid-crystal compsn.
Summary of the invention
The purpose of this invention is to provide a kind of negative dielectric anisotropy liquid crystal composition with low threshold voltage, short response time, original text contrast gradient and wide visual angle.
Negative dielectric anisotropy liquid crystal composition of the present invention comprises:
(1) 1～50% I compounds, said I compounds do,
(2) 1～70% II compounds, said II compounds do,
(3) 0～50% III compounds, said III compounds do,
(4) 1～50% IV compounds, said IV compounds do,
(5) 0～20% V compounds, said V compounds do,
Wherein, R
1～R
10The alkyl of 1～12 carbon atom of expression independent of each other, alkoxyl group or 2～12 carbon atom thiazolinyls.
In addition, the content of said classes of compounds is respectively:
I compounds 20～35%
II compounds 20～55%
III compounds 0～35%
IV compounds 10～35%
V compounds 0～15%.
In addition, said I compounds is:
Said II compounds is:
Said III compounds is:
Wherein said R
a～R
cBe the alkyl of 1～12 carbon atom or the thiazolinyl of 2～12 carbon atoms; Said R
a'～R
c' be the alkyl of 1～12 carbon atom.
In addition, said R
1～R
10The alkyl of 1～5 carbon atom of expression independent of each other, alkoxyl group or 2～5 carbon atom thiazolinyls, said R
a～R
cBe the alkyl of 1～5 carbon atom or the thiazolinyl of 2～5 carbon atoms; Said R
a'～R
c' R ' is the alkyl of 1～5 carbon atom.
In addition,
Said I compounds is one or more in the following compounds:
Said II compounds is one or more in the following compounds:
Said III compounds is one or more in the following compounds:
Said IV compounds is one or more in the following compounds:
Said V compounds is one or more in the following compounds:
In addition, the Δ n of said liquid-crystal compsn is 0.08～0.12.
The present invention also provides the application of a kind of said liquid-crystal compsn in liquid crystal indicator in addition.
Wherein, said liquid crystal indicator is VAN indicating meter, IPS indicating meter or the FFS indicating meter of MVA and PVA configuration.
I～III compounds represented 2,3-two fluoride compounds have stronger negative dielectric anisotropic, in most negative liquid crystals, all have to relate to excellent performance; Particularly the performance aspect reduction mixed system viscosity, raising response of the liquid crystalline cpd of two ring structures shown in the I compounds is particularly outstanding, and the major defect of existence is that clearing point is low excessively; Liquid crystalline cpd shown in II class and the III compounds has the nematic temperature range of broad, moderate optical anisotropy and good low-temperature performance, and is essential in negativity mixed liquid crystal material.
Compound shown in the general formula I V is a non-polar component, is disclosed in the early time in the U.S. Pat 4565425; The own cyclic cpds of this type of dicyclo is remarkable for the viscosity effect that reduces system, is the allotment requisite compounds of liquid crystal compound of response fast.
Liquid crystalline cpd shown in the general formula V has higher clearing point and bigger optical anisotropy, can be used for the clearing point and the Δ n numerical value of the system of adjusting.This single fluorine terphenyl compound liquid crystal is first disclosed as in the European patent EP 0132377 of Merck company; This type of liquid crystalline cpd purposes very extensively; Disclosing this compounds among the Chinese patent CN1823151 has lower rotary viscosity advantage, is favourable to the improvement of liquid-crystal compsn time of response; The conjugated system of this terphenyl makes that also the optical anisotropy of compound is bigger simultaneously, and the Δ n numerical value of regulating mixed system is played a role.
Preparing method to negative dielectric anisotropy liquid crystal composition of the present invention does not have particular restriction.Can adopt ordinary method that two or more liquid crystalline cpds are mixed produces; As at high temperature mix different components and dissolved method preparation each other; Wherein, liquid-crystal compsn is dissolved in solvent and the mixing that is used for this compound, under reduced pressure distills out this solvent then; Liquid-crystal compsn perhaps of the present invention preparing method's preparation in a conventional manner; The less component of content is dissolved under higher temperature in the bigger main ingredient of content as inciting somebody to action wherein; Or component under each dissolved in organic solvent; Like acetone, chloroform or methyl alcohol etc., solution is mixed obtaining after solvent is removed in the back then.
Through the negative dielectric anisotropy liquid crystal composition excellent property that scheme of the present invention obtains, short response time, high-contrast, LV, good advantages such as low temperature mutual solubility can be used for plurality of display modes.Negative dielectric anisotropic liquid crystal compound is because the characteristics on its molecular structure make it all have higher viscosity usually; All there is certain problem in low-temperature performance when being mixed into liquid crystal material simultaneously; The negative liquid crystal mixture of proportioning of the present invention has overcome these problems, has low relatively viscosity and good low-temperature performance.Use negative dielectric anisotropy liquid crystal composition in VA, IPS or FFS pattern, to use the problem of the subtense angle that obviously improves liquid-crystal display.
Embodiment
Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
Following method is all adopted in the preparation of liquid crystal sample in the embodiment of the invention:
Evenly the heat of solution method of generally using is in the industry adopted in the preparation of liquid crystal; At first with balance weighing liquid crystalline cpd by weight percentage; Wherein the weighing addition sequence does not have particular requirement, mixes with liquid crystalline cpd fusing point order from high to low weighing successively usually, makes each component fusion evenly 60-100 ℃ of following heated and stirred; Through filtering, revolve steaming, encapsulation at last promptly gets target sample again.In addition, the related method of also available patent CN101502767A is carried out the preparation of even liquid crystal.
Except as otherwise noted, per-cent is weight percentage in the context, and all temperature are degree centigrade to provide.Use following abbreviation: Δ n is optical anisotropy, n
0Be specific refractory power (589nm, 20 ℃).η (mm
2/ s, 20 ℃) be volume viscosity.Δ ε be dielectric constant anisotropy (20 ℃, 1000Hz).V
10The character voltage of threshold voltage=when relative 10% contrast gradient (V, 20 ℃) except as otherwise noted, all optical datas are all measured down at 20 ℃.The present invention uses following abbreviation:
Embodiment 1
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 1.1 and 1.2:
The weight percent of each component (%) in table 1.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 16 |
| IB-4 | 15 |
| IIB-1 | 12 |
| IIB-2 | 10 |
| IIB-4 | 10 |
| IIA-1 | 11 |
| IIA-2 | 11 |
| IVA-1 | 11 |
| IB-1 | 2 |
| V-1 | 1 |
| V-2 | 1 |
The character of table 1.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.16 |
| η[mm 2/s，20℃] | 29 |
| Cp[℃] | 79.6 |
| Δn[20℃，589nm] | 0.0905 |
| Δε | -3.7 |
Embodiment 2
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 2.1 and 2.2:
The weight percent of each component (%) in table 2.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IA-1 | 15 |
| IB-3 | 12 |
| IIB-1 | 10 |
| IIB-2 | 12 |
| IIB-3 | 11 |
| IIA-3 | 10 |
| IIA-4 | 11 |
| IVA-2 | 15 |
| IB-1 | 2 |
| V-1 | 1 |
| V-2 | 1 |
The character of table 2.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.33 |
| η[mm 2/s，20℃] | 28.7 |
| Cp[℃] | 82.0 |
| Δn[20℃，589nm] | 0.086 |
| Δε | -3.32 |
Embodiment 3
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 3.1 and 3.2:
The weight percent of each component (%) in table 3.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 17 |
| IA-1 | 15 |
| IIB-1 | 12 |
| IIB-5 | 10 |
| IIB-4 | 10 |
| IIA-1 | 11 |
| IIA-2 | 11 |
| IVB-2 | 10 |
| IB-1 | 2 |
| V-1 | 1 |
| V-2 | 1 |
The character of table 3.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.2 |
| η[mm 2/s，20℃] | 31.8 |
| Cp[℃] | 79.4 |
| Δn[20℃，589nm] | 0.0920 |
| Δε | -4.09 |
Embodiment 4
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 4.1 and 4.2:
The weight percent of each component (%) in table 4.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 16 |
| IB-4 | 16 |
| IIB-1 | 12 |
| IIB-2 | 10 |
| IIB-4 | 10 |
| IIA-1 | 12 |
| IIA-2 | 11 |
| IVA-1 | 13 |
The character of table 4.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.31 |
| η[mm 2/s，20℃] | 30 |
| Cp[℃] | 84.8 |
| Δn[20℃，589nm] | 0.087 |
| Δε | -3.92 |
Embodiment 5
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 5.1 and 5.2:
The weight percent of each component (%) in table 5.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 14 |
| IB-4 | 12 |
| IIB-1 | 10 |
| IIB-2 | 10 |
| IIB-4 | 10 |
| IIA-1 | 10 |
| IIA-2 | 10 |
| IVA-1 | 10 |
| IVA-3 | 3 |
| V-1 | 4 |
| V-2 | 3 |
| V-3 | 4 |
The character of table 5.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.55 |
| η[mm 2/s，20℃] | 28 |
| Cp[℃] | 93.2 |
| Δn[20℃，589nm] | 0.109 |
| Δε | -3.7 |
Embodiment 6
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 6.1 and 6.2:
The weight percent of each component (%) in table 6.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 14 |
| IB-4 | 12 |
| IIB-1 | 8 |
| IIB-2 | 8 |
| IIB-4 | 8 |
| IIA-1 | 7 |
| IIA-2 | 7 |
| IVA-1 | 10 |
| IVA-3 | 2 |
| V-1 | 2 |
| V-3 | 2 |
| IIIA-3 | 10 |
| IIIA-2 | 10 |
The character of table 6.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.51 |
| η[mm 2/s，20℃] | 29 |
| Cp[℃] | 95.6 |
| Δn[20℃，589nm] | 0.1130 |
| Δε | -4.18 |
Embodiment 7
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 7.1 and 7.2:
The weight percent of each component (%) in table 7.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IB-2 | 17 |
| IB-4 | 12 |
| IIB-1 | 10 |
| IIB-2 | 10 |
| IIB-4 | 10 |
| IIA-1 | 5 |
| IIA-2 | 10 |
| IVA-1 | 8 |
| IVA-3 | 5 |
| V-1 | 6 |
| V-2 | 3 |
| V-3 | 4 |
The character of table 7.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.56 |
| η[mm 2/s，20℃] | 26.8 |
| Cp[℃] | 91.0 |
| Δn[20℃，589nm] | 0.112 |
| Δε | -3.90 |
Embodiment 8
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 8.1 and 8.2:
The weight percent of each component (%) in table 8.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IIIB-2 | 7 |
| IIIB-4 | 9 |
| IIIA-1 | 3 |
| IIIA-4 | 7 |
| IIIB-3 | 9 |
| IB-2 | 18 |
| IB-4 | 3 |
| IIB-1 | 10 |
| IIA-1 | 8 |
| IIA-2 | 10 |
| IVA-1 | 16 |
The character of table 8.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.51 |
| η[mm 2/s，20℃] | 26.5 |
| Cp[℃] | 90.5 |
| Δn[20℃，589nm] | 0.111 |
| Δε | -3.99 |
Embodiment 9
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 9.1 and 9.2:
The weight percent of each component (%) in table 9.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IIIB-1 | 3 |
| IIIB-2 | 8 |
| IIIB-4 | 7 |
| IB-2 | 17 |
| IB-4 | 10 |
| IIB-1 | 12 |
| IIB-2 | 3 |
| IIB-4 | 5 |
| IVA-1 | 30 |
| IVA-3 | 5 |
The character of table 9.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.57 |
| η[mm 2/s，20℃] | 16.4 |
| Cp[℃] | 76.4 |
| Δn[20℃，589nm] | 0.091 |
| Δε | -3.42 |
Embodiment 10
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 10.1 and 10.2:
The weight percent of each component (%) in table 10.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IIIB-1 | 3 |
| IIIB-2 | 8 |
| IIIB-4 | 7 |
| IB-2 | 17 |
| IB-4 | 10 |
| IIB-1 | 12 |
| IIB-2 | 3 |
| IIB-4 | 5 |
| IVA-1 | 30 |
| IVA-3 | 2 |
| IVB-1 | 3 |
The character of table 10.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.57 |
| η[mm 2/s，20℃] | 16.3 |
| Cp[℃] | 75.7 |
| Δn[20℃，589nm] | 0.090 |
| Δε | -3.15 |
Embodiment 11
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 11.1 and 11.2:
The weight percent of each component (%) in table 11.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IIIB-2 | 10 |
| IIIB-4 | 6 |
| IB-2 | 19 |
| IB-4 | 10 |
| IIB-1 | 9 |
| IIB-2 | 9 |
| IIA-1 | 3 |
| IVA-1 | 22 |
| IVA-3 | 12 |
The character of table 11.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.49 |
| η[mm 2/s，20℃] | 16.4 |
| Cp[℃] | 75.6 |
| Δn[20℃，589nm] | 0.091 |
| Δε | -3.39 |
Embodiment 12
Get the liquid crystalline cpd of following weight percent and prepare liquid-crystal compsn with method described in the present invention, the character of the concrete proportioning and the liquid-crystal compsn of gained is seen table 12.1 and 12.2:
The weight percent of each component (%) in table 12.1 liquid-crystal compsn
| Component composition | Weight percent (%) |
| IIIB-1 | 3 |
| IIIB-2 | 8 |
| IIIB-4 | 7 |
| IB-2 | 17 |
| IB-4 | 10 |
| IIB-1 | 7 |
| IIB-2 | 2 |
| IIB-4 | 4 |
| IIA-5 | 2 |
| IIB-5 | 5 |
| IVA-1 | 22 |
| IVA-3 | 12 |
The character of table 12.2 liquid-crystal compsn
| Nature parameters | Parameter value |
| V 10[V，20℃] | 2.53 |
| η[mm 2/s，20℃] | 15.5 |
| Cp[℃] | 75.7 |
| Δn[20℃，589nm] | 0.091 |
| Δε | -3.42 |
Claims (7)
1. a negative dielectric anisotropy liquid crystal composition is characterized in that, comprising:
(1) 1～50% I compounds, said I compounds do,
(2) 1～70% II compounds, said II compounds do,
(3) 0～50% III compounds, said III compounds do,
(4) 1～50% IV compounds, said IV compounds do,
(5) 0～20% V compounds, said V compounds do,
Wherein, R
1～R
10The alkyl of 1～12 carbon atom of expression independent of each other, alkoxyl group or 2～12 carbon atom thiazolinyls.
2. according to the said liquid-crystal compsn of claim 1, it is characterized in that the content of said classes of compounds is respectively:
I compounds 20～35%
II compounds 20～55%
III compounds 0～35%
IV compounds 10～35%
V compounds 0～15%.
3. liquid-crystal compsn according to claim 1 and 2 is characterized in that,
Said I compounds is:
Said II compounds is:
Said III compounds is:
Wherein said R
a～R
cBe the alkyl of 1～12 carbon atom or the thiazolinyl of 2～12 carbon atoms; Said R
a'～R
c' be the alkyl of 1～12 carbon atom.
4. according to each said liquid-crystal compsn of claim 1～3, it is characterized in that said R
1～R
10The alkyl of 1～5 carbon atom of expression independent of each other, alkoxyl group or 2～5 carbon atom thiazolinyls, said R
a～R
cBe the alkyl of 1～5 carbon atom or the thiazolinyl of 2～5 carbon atoms; Said R
a'～R
c' be the alkyl of 1～5 carbon atom.
5. according to each said liquid-crystal compsn of claim 1～4, it is characterized in that,
Said I compounds is one or more in the following compounds:
Said II compounds is one or more in the following compounds:
Said III compounds is one or more in the following compounds:
Said IV compounds is one or more in the following compounds:
Said V compounds is one or more in the following compounds:
6. according to each said liquid-crystal compsn application in liquid crystal indicator of claim 1～5.
7. application according to claim 6 is characterized in that, said liquid crystal indicator is VAN indicating meter, IPS indicating meter or the FFS indicating meter of MVA and PVA configuration.
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