CN101130694B - Liquid crystal media - Google Patents
Liquid crystal media Download PDFInfo
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- CN101130694B CN101130694B CN200710146892.6A CN200710146892A CN101130694B CN 101130694 B CN101130694 B CN 101130694B CN 200710146892 A CN200710146892 A CN 200710146892A CN 101130694 B CN101130694 B CN 101130694B
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
Abstract
The present invention relates to the liquid crystal media of the compound of contained I, and relate to the liquid-crystal display comprising described medium, particularly stable twisted nematic (TN) and super-twisted nematic (STN) liquid-crystal display.
Description
Technical field
The present invention relates to liquid crystal media and the liquid-crystal display containing this medium, particularly there is stable twisted nematic (TN) and super-twisted nematic (STN) liquid-crystal display of very short response time and good steepness and dependence of angle.
Background technology
TN indicating meter such as from M.Schadt and W.Helfrich, Appl.Phys.Lett., 18, be known in 127 (1971).STN indicating meter is such as from EP0131216B1; DE3423993A1; EP0098070A2; M.Schadt and F.Leenhouts, 17thFreiburgCongressonLiquidCrystals (8.-10.04.87); The people such as K.Kawasaki, SID87Digest391 (20.6); M.Schadt and F.Leenhouts, SID87Digest372 (20.1); The people such as K.Katoh, JapaneseJournalofAppliedPhysics, the 26th volume, o. 11th, L1784-L1786 (1987); The people such as F.Leenhouts, Appl.Phys.Lett.50 (21), 1468 (1987); H.A.vanSprang and H.G.Koopman, J.Appl.Phys.62 (5), 1734 (1987); T.J.Scheffer and J.Nehring, Appl.Phys.Lett.45 (10), 1021 (1984), M.Schadt and F.Leenhouts, Appl.Phys.Lett.50 (5), 236 (1987) and E.P.Raynes, Mol.Cryst.Liq.Cryst.Letters the 4th (1) volume, 1-8 page is known in (1986).Term STN comprises at this and has the display element that numerical value is any relatively high torsion of the torsion(al)angle of 160 ° to 360 °, such as, according to the people such as the Waters (people such as C.M.Waters, Proc.Soc.Inf.Disp. (NewYork) (1985) (3rdIntern.DisplayConference, Kobe, Japan)) display element, STN-LCD (DE-A3503259), SBE-LCD (T.J.Scheffer and J.Nehring, Appl.Phys.Lett.45 (1984) 1021), OMI-LCD (M.Schadt and F.Leenhouts, Appl.Phys.Lett.50 (1987), 236), DST-LCD (EP-A0246842) or the BW-STN-LCD (people such as K.Kawasaki, SID87Digest391 (20.6)).
The difference of STN indicating meter and standard TN displays is obviously better electro-optic properties line steepness and relative better contrast value, and the significantly lower dependence of angle of contrast gradient.
Interested is especially have very short response time, particularly also has TN and the STN indicating meter of very short response time at relatively low temperature.In order to realize short response time, the most monotropic additive with relatively high vapour pressure and rotary viscosity optimizing liquid crystal compound of using so far.But the time of response realized is not enough to meet each application.
In order to realize electro-optic properties line steep in indicating meter of the present invention, liquid crystal compound should have the Elastic ratio K of relatively large number value
33/ K
11with the Δ ε/ε of relative fractional value
⊥, wherein Δ ε is dielectric anisotropy, ε
⊥the specific inductivity vertical with vertical element axle.
Except contrast gradient and the optimization of time of response, the requirement to this mixture also has other important:
1. wide d/p window
2. high long-term chemical durability
3. high resistance
4. the low frequency of threshold voltage and temperature dependency.
The parameters combination realized still is nowhere near, particularly for high multiplex transmission (multiplex) STN indicating meter (there is the multiplex transmission ratio in about 1/400 scope), and for the low multiplex transmission STN indicating meter of neutralization (there is the multiplex transmission ratio of about 1/64 and 1/16 respectively), and TN indicating meter.This is subject to the fact of the impact of material parameter in part with opposite way owing to described various requirement.
Therefore, still there is extremely need while the large operating temperature range meeting above-mentioned requirements, high characteristic line steepness, the dependence of angle of good contrast gradient and low threshold voltage, there is TN and the STN indicating meter of very short response time, particularly neutralize low multiplex transmission STN indicating meter.
In addition, modern Application, such as telecommunications etc., need the liquid crystal compound of the dielectric anisotropy Δ ε with high positive, to realize necessary low threshold voltage.But the threshold voltage of reduction often causes the raising of time of response.
Therefore, need to provide the Δ ε and the liquid crystal compound simultaneously with fast response time with high positive.
Summary of the invention
The object of this invention is to provide the novel cpd and liquid crystal media that are used in particular for TN and STN indicating meter, it does not have above-mentioned shortcoming or only in less degree, has above-mentioned shortcoming, there is high positive Δ ε, low threshold voltage, short response time (particularly at low temperatures) simultaneously, and extraordinary steepness.
Have been found that now if use liquid crystal media of the present invention, then can realize the object of the invention.
The present invention relates to the liquid crystal media of the compound of contained I
The use of compound in the mixture of the present invention of TN and STN indicating meter of formula I causes
● higher electro-optic properties line steepness,
● due to the frequency dependence improved, the lower temperature dependency of operating voltage,
● the time of response faster, particularly at low temperatures.
The compound of formula I especially significantly shorten the time of response of TN and STN mixture, significantly improves dielectric anisotropy and steepness simultaneously and reduces the temperature dependency of threshold voltage.
Mixture of the present invention is also feature with following advantages:
-they have low viscosity,
-they have low threshold voltage and operating pressure, and
-they achieve long storage life in the display at low temperatures.
The invention still further relates to liquid-crystal display, it has
-two outside plates, they form liquid crystal cell (cell) together with framework,
-be positioned at the nematic liquid crystal mixtures with positive dielectric anisotropy of this liquid crystal cell,
-inside outside plate on the electrode layer with oriented layer,
Pitch angle between the molecule longitudinal axis at-outer plate surfaces place and outside plate is 0 ° to 30 °, and
The torsion(al)angle numerical value of liquid crystal compound in-liquid crystal cell from oriented layer to oriented layer is 22.5 ° to 600 °,
-nematic liquid crystal mixtures, it is made up of following material:
A) liquid crystal that forms of the compound that there is the dielectric anisotropy being greater than+1.5 by one or more of 15-75 % by weight
component A;
B) liquid crystal that forms of the compound of the dielectric anisotropy had between-1.5 to+1.5 by one or more of 25-85 % by weight
b component;
C) 0-20's % by weight has by one or more liquid crystal that compound lower than the dielectric anisotropy of-1.5 forms
component D; With
If d) needed, optically-active
component C, its amount makes the ratio between layer thickness (outer distance between plates) and the natural pitch of chiral nematic liquid crystal mixture be about 0.2 to 1.3,
It is characterized in that, this nematic liquid crystal mixtures as context define.
The invention still further relates to TN and the STN indicating meter containing liquid crystal compound of the present invention, particularly neutralize low multiplex transmission STN indicating meter.
The use of compound in liquid crystal compound of the present invention of formula I causes rotary viscosity value low especially, and causes TN and the STN indicating meter with high steepness and fast response time (particularly at low temperatures).
Except the compound of formula I, liquid crystal compound of the present invention preferably comprises the alkenyl compound of one or more formula II in addition
Wherein
A is Isosorbide-5-Nitrae-phenylene or anti-form-1,4-cyclohexylidene,
A is 0 or 1,
R
3the alkenyl with 2 to 9 carbon atoms, and
R
4be unsubstituted, by CN or CF
3mono-substituted or by least mono-substituted alkyl with 1 to 12 carbon atom of halogen, the one or more CH wherein in these groups
2group also can be substituted by-O-,-S-,-CH=CH-,-C ≡ C-,-CO-,-CO-O-,-O-CO-or-O-CO-O-in the mode that O atom is not directly connected to each other separately independently of one another.
The compound of particularly preferred formula II is selected from those of following formula:
Wherein R
3aand R
4abe H, CH independently of one another
3, C
2h
5or n-C
3h
7, and alkyl is the alkyl with 1 to 8 carbon atom.
Especially preferred is the compound of formula IIa, particularly wherein R
3aand R
4afor H or CH
3those, and formula IIe, IIf, IIg, IIh and IIi compound, particularly wherein R
3afor H or CH
3those;
Dielectric anisotropy the formula I of (" dielectric is neutral ") and compound of II between-1.5 to+1.5 are as defined above
b componenta part.
Except the compound of formula I and II, liquid crystal compound of the present invention preferably comprises the formula II that one or more have positive dielectric anisotropy in addition
*alkenyl compound
Wherein
R
3the alkenyl with 2 to 7 carbon atoms,
Q is CF
2, OCF
2, CFH, OCFH or singly-bound,
Y is F or Cl, and
L
1and L
2be H or F independently of one another.
Especially preferred is wherein L
1and/or L
2for F and Q-Y is F or OCF
3formula II
*compound.
Further preferably wherein R
3for having 2 to 7, the preferably 1E-alkenyl of 2,3 or 4 carbon atoms or the formula II of 3E-alkenyl
*compound.
It is most preferred that formula II
*the compound of a
Wherein R
3ah, CH
3, C
2h
5or n-C
3h
7, particularly H or CH
3.
The formula II that dielectric anisotropy is greater than+1.5
*polar compound be as defined above
component aa part.
Preferred liquid crystal compound preferably with 15% to 75% ratio, more preferably comprise one or more with the ratio of 20% to 65%
component Acompound.These compounds preferably have Δ ε >=+3, more preferably Δ ε >=+8 and the dielectric anisotropy of the most particularly preferably Δ ε >=+12.
component Apreferably comprise the cyano compound that one or more are selected from following formula
Wherein
R has the alkyl of 1 to 12 carbon atom, alkoxyl group or alkenyl, the one or more CH wherein in these groups
2group also can be substituted by-O-,-CH=CH-,-CO-,-OCO-or-COO-in the mode that O atom is not directly connected to each other separately independently of one another, and
L
1, L
2, L
3and L
4be H or F independently of one another.
R in these compounds preferably has alkyl or the alkoxyl group of 1 to 8 carbon atom, or has the alkenyl of 2 to 7 carbon atoms.
It is most preferred that the mixture comprising one or more compounds being selected from formula III b, IIIc, IIId and IIIe and formula III g compound, especially, wherein L
1and/or L
2f.
Preferably comprise the mixture of the compound of one or more formula IIIs c and/or IIId further, wherein R is the alkenyl with 2 to 7 carbon atoms, preferably-alkenyl or 3E-alkenyl, more preferably vinyl, 1E-propenyl, 1E-butenyl, 3E-butenyl or 3E-pentenyl, most preferably 1E-butenyl.
Further preferably comprise the mixture of the compound of one or more formula IIIs d, wherein L
3and L
4h.
Preferred liquid crystal compound comprises one or more
b componentcompound, preferably 25 to 85%.Category-B compound especially with the rotary viscosity γ 1 of its low numerical value for feature.
b componentpreferably comprise the compound that one or more are selected from the dicyclic compound of following formula in addition
And/or one or more are selected from the compound of the tricyclic compound of following formula
And/or one or more are selected from the compound of the tetracyclic compound of following formula
Wherein
R
1and R
2be independently of one another unsubstituted, by CN or CF
3mono-substituted or by least mono-substituted alkyl with 1 to 12 carbon atom of halogen, the one or more CH wherein in these groups
2group also can be substituted by-O-,-S-,-CH=CH-,-C ≡ C-,-CO-,-CO-O-,-O-CO-or-O-CO-O-in the mode that O atom is not directly connected to each other separately independently of one another, and
L is H or F,
And Isosorbide-5-Nitrae-phenylene in its Chinese style IV10 to IV19 and formula IV23 to IV33 is optionally monosubstituted or polysubstituted by F.
Particularly preferably be wherein R
1for alkyl and R
2for alkyl or alkoxyl group, especially alkoxyl group, and described group has the compound of the formula IV27 to IV33 of 1 to 7 carbon atom separately.In addition, formula IV27 when L is F and the compound of IV33 are preferred.
Especially preferred is the compound of formula IV12, IV27 and IV32.
R in the compound of formula IV1 to IV33
1and R
2be particularly preferably the straight chained alkyl or alkoxyl group with 1 to 12 carbon atom.
Particularly preferably be the mixture of the present invention of the compound comprising one or more formula IV24, R in the compound of preferred formula IV24
1for having the alkenyl of 2 to 7 carbon atoms, very preferably this compound is selected from formula IV24a and IV24b
Wherein R
3aas defined above.
In another preferred embodiment of the present, liquid crystal compound comprises the tolane compound that one or more are selected from formula Ta to Ti
Wherein R
1and R
2as in above formula IV define,
Z
4-CO-O-,-CH
2cH
2-or singly-bound, and
L
1to L
6be H or F independently of one another.
Especially preferred is the compound of formula Ta, Tb and Tc.
In another preferred embodiment of the present, liquid crystal compound of the present invention
component Apreferably comprise 3,4, the 5-trifluorophenyl compounds that one or more are selected from following formula in addition
And/or one or more are selected from the compound with terminal polar group of following formula
Wherein R as in formula III define, and L
3and L
4be H or F independently of one another.Preferably, the R in these compounds is alkyl or the alkoxyl group with 1 to 8 carbon atom.
Especially preferred is the compound, particularly formula Va of formula Va, Vb, Vc, Vd, Vm, Vn and VIm, the compound of Vm, Vn and VIm.
In another preferred embodiment of the present, this liquid crystal compound comprises one or more, particularly preferably the heterogeneous ring compound of a kind of, two or three formula VIIa and/or VIIb
Wherein R
6and R
7define as defined in formula III R, and Y is F or Cl.
If needed, liquid crystal compound comprises optically-active
component C, its amount makes the ratio between layer thickness (outer distance between plates) and the natural pitch of chiral nematic liquid crystal mixture be greater than 0.2.Those skilled in the art can obtain multiple chiral dopant for this component, and some of them are commercially available, such as, derive from MerckKGaA, the cholesteryl nonanoate of Darmstadt, S-811, S-1011, S-2011, S-3011, S-4011 or CB15.
The ratio of the compound of component C is preferably 0 to 10%, and more preferably 0 to 5%, particularly 0 to 3%.
If mixture of the present invention needs, can also comprise most as many as 20% one or more have the dielectric anisotropy being less than-2 compound (
component D).
If this mixture comprises
component Dcompound, it is preferably one or more and contains the compound of the fluoro-Isosorbide-5-Nitrae-phenylene of structural unit 2,3-bis-, such as, as the compound described in DE-A3807801,3807861,3807863,3807864 and 3807908.Particularly preferably be the tolane containing this structural unit as described in international patent application WO88/07514.
The compound of other known component D is the derivative of 2,3-dicyano quinhydrones such as described in DE-A3231707 and DE-A3407013 or the cyclohexane derivant containing having structure unit:
Liquid-crystal display of the present invention does not preferably contain
component Dcompound.
R and R
1to R
7definition in term " alkenyl " comprise straight chain and branched alkenyl, particularly straight chain group.Particularly preferred alkenyl is C
2-C
7-1E-alkenyl, C
4-C
7-3E-alkenyl, C
5-C
7-4-alkenyl, C
6-C
7-5-alkenyl and C
7-6-alkenyl, particularly C
2-C
7-1E-alkenyl, C
4-C
7-3E-alkenyl and C
5-C
7-4-alkenyl.
The example of preference chain thiazolinyl is vinyl, 1E-propenyl, 1E-butenyl, 1E-pentenyl, 1E-hexenyl, 1E-heptenyl, 3E-butenyl, 3E-pentenyl, 3E-hexenyl, 3E-heptenyl, 4-pentenyl, 4Z-hexenyl, 4E-hexenyl, 4Z-heptenyl, 5-hexenyl, 6-heptenyl etc.The group with most as many as 5 carbon atoms is normally preferred.
In particularly preferred embodiments, liquid crystal compound comprises
-one or more are selected from formula IIa to IIi and/or II
*compound,
-one or more are selected from the compound of formula III a to IIIi,
The compound of-one or more formula IV24,
-one or more are selected from the compound of formula Ta to Tc,
-one or more are selected from the compound of formula IV12 and/or IV27 and/or IV32.
In another particularly preferred embodiment, liquid crystal compound comprises
-2 to 30%, the preferably compound of formula I of 4 to 20%,
-0 to 30%, the preferably compound of formula IV24 of 3 to 20%,
-8 to 70%, preferably 14 to 60% formula IIa to IIi and/or II
*compound,
-4 to 50%, the preferably compound of formula Ta to Tc of 5 to 40%,
-5 to 40%, the preferably compound of formula III a to IIIi of 10 to 30%,
-0 to 20%, the preferably formula IV12 of 2 to 10% and/or the compound of IV27 and/or IV32.
Each compound of above-mentioned various and minor, and in mixture of the present invention or TN and STN indicating meter, other available compounds are known or can prepare similarly with known compound.
Compound of the present invention, when particularly using in TN and the STN indicating meter with high layer thickness, with low-down overall response time (t
always=t
logical+ t
disconnected) be feature.
In TN of the present invention and stn liquid crystal box, liquid crystal compound used is preferably Dielectric positive, wherein Δ ε >=1.The liquid crystal compound of preferred Δ ε >=5.
The clear point of liquid crystal compound of the present invention is preferably 80 DEG C or higher, more preferably 90 DEG C or higher.
Liquid crystal compound of the present invention has favourable threshold voltage V
10/0/20value and rotary viscosity γ 1 are worth.If the value of prespecified path difference d Δ n, then the value of layer thickness d is determined by optical anisotropy Δ n.Particularly under the d Δ n of relatively high numerical value, the use with the liquid crystal compound of the present invention of relatively high optical anisotropy numerical value is normally preferred, because at this moment can select relatively little d value, it causes more favourable response time value.But, containing have less Δ n value liquid crystal compound of the present invention liquid-crystal display of the present invention also with favourable response time value for feature.
Preferably, liquid crystal compound of the present invention has > 0.12, the birefringence n of very preferably >=0.14.Further preferably, liquid crystal compound of the present invention has < 0.25, the birefringence n of very preferably≤0.22.
Liquid crystal compound of the present invention also with favourable electro-optic properties line steepness value for feature, and can to operate by much higher road transfer ratio, particularly higher than at the temperature of 20 DEG C.In addition, liquid crystal compound of the present invention has the frequency dependence of high stability and favourable resistance value and threshold voltage.Liquid-crystal display of the present invention has the good dependence of angle of large operating temperature range and contrast gradient.
Usually the structure being reversed the liquid crystal display device of the present invention of the value-formed of 160 ° to 720 ° by polaroid, electrode base board and electrode-this electrode through surface treatment with the preferred direction (director) of the liquid crystal molecule be adjacent under making often kind of situation from an electrode to another electrode meets the ordinary construction of this display element.Term " ordinary construction " also also comprises all derivatives and the modification of TN and stn liquid crystal box at this broad understanding, particularly also have matrix display element and the display element containing additional magnet.
The surperficial pitch angle at two outside plate places can be identical or different.Identical pitch angle is preferred.Preferred TN indicating meter has 0 ° to 7 ° between the molecule longitudinal axis and outside plate of outside plate surface, preferably 0.01 ° to 5 °, the particularly pre-tilt angle of 0.1 to 2 °.In STN indicating meter, pre-tilt angle is 1 ° to 30 °, preferably 1 ° to 12 °, particularly 3 ° to 10 °.
In liquid crystal cell, the torsion(al)angle of TN mixture has 22.5 ° to 170 °, preferably 45 ° to 130 °, the particularly value of 80 ° to 115 °.The torsion(al)angle of STN mixture from oriented layer to oriented layer in liquid crystal cell has 100 ° to 600 °, preferably 170 ° to 300 °, the particularly value of 180 ° to 270 °.
Liquid crystal compound of the present invention is also suitable as liquid crystal media in cholesteric liquid crystal display, particularly in SSCT (" surface stabilization cholesteric texture ") and PSCT-(" polymer stabilising cholesteric texture ") indicating meter, and such as WO92/19695, US5,384,067, US5,453,863, US6,172,720 and US5,661, those described in 533.Cholesteric liquid crystal display comprises the cholesteryl liquid crystal medium be made up of nematic component and optically-active component usually, and compares with TN-with STN indicating meter, shows obvious higher screw twisted and shows the selective reflection of circularly polarized light.Reflection wavelength is provided by the product of the pitch of cholesteric helix and the average refractive index of cholesteryl liquid crystal medium.
One or more chiral dopants are added for this purpose in liquid crystal compound of the present invention, the wherein twisting resistance of chosen dopant and concentration, to make gained liquid crystal media, at room temperature there is cholesteryl phase and be preferably placed in the visible ray of electromagnetic spectrum, UV-light or infrared region, the reflection wavelength particularly in 400 to 800 nanometer range.
Suitable chiral dopant is that those skilled in the art are known and commercially available, such as cholesteryl nonanoate (CN), CB15, R/S-811, R/S-1011, R/S-2011, R/S-3011, R/S-4011 and R/S-5011 (MerckKGaA, Darmstadt).Specially suitable is comprise the doping agent with high twisting resistance, particularly Sorbitol Powder of chirality glycosyl group, the derivative of mannitol or iditol, is very preferably as sorbitol derivatives disclosed in WO98/00428.Further preferably as GB2,328, the doping agent comprising benzyleneglycol group described in 207, the Chiral binaphthyl derivate as described in WO02/94805, the chiral binaphthol acetal derivant as described in WO02/34739, chirality TADDOL derivative as described in WO02/06265 and there is at least one fluoridize the chiral dopant being connected base and end or central chirality group such as described in WO02/06196 with WO02/06195.
When using two or more doping agents, they can show identical or contrary torsional direction, with the identical or contrary sign of the linear temperature coefficient reversed.
Comprising liquid crystal compound of the present invention as nematic component and one or more chiral dopants is another object of the present invention as the cholesteryl liquid crystal medium of optically-active component.Another object more of the present invention is the cholesteric liquid crystal display comprising above-mentioned cholesteryl liquid crystal medium, particularly SSCT-and PSCT-indicating meter.
Liquid crystal compound that can be used according to the invention, by conventional mode itself, such as, by the compound of formula I and one or more are selected from above-mentioned various compound, and is prepared optional mixing with other compound or additive.Generally speaking, by the component used with small amount of aequum, advantageously at elevated temperatures, be dissolved in the component forming main component.Can also by these components at organic solvent, such as, solution mixing in acetone, chloroform or methyl alcohol, and such as remove solvent by distillation more after thorough mix-ing.The method preparing mixture is another aspect of the present invention.
Dielectric medium can also comprise the other additive described in well known by persons skilled in the art and document.Such as, 0-15% pleochroism dyestuff, nanoparticle, stablizer or chiral dopant can be added.Suitable doping agent and stablizer is shown in following table C and D.
Embodiment
In the application and the following example, represent the structure of liquid crystalline cpd with acronym, change into chemical formula according to Table A and B.All group C
nh
2n+1and C
mh
2m+1it is all the straight chained alkyl respectively with n and m carbon atom.Alkenyl has transconfiguration.Coding in table B is self-explantory.In Table A, illustrate only the acronym of precursor structure.In single situation, be connected to separatedly in the following table for substituent R with dash after the acronym of precursor structure
1, R
2, L
1, L
2and L
3shown code.
R
1，R
2，L
1，R
1R
2L
1L
2L
3
L
2, L
3code
_____________________________________________________________________
nmC
nH
2n+1C
mH
2m+1HHH
nOmC
nH
2n+1OC
mH
2m+1HHH
nO.mOC
nH
2n+1C
mH
2m+1HHH
nC
nH
2n+1CNHHH
nN.FC
nH
2n+1CNHHF
nN.F.FC
nH
2n+1CNHFF
nFC
nH
2n+1FHHH
nOFOC
nH
2n+1FHHH
nF.FC
nH
2n+1FHHF
nmFC
nH
2n+1C
mH
2m+1FHH
nOCF
3C
nH
2n+1OCF
3HHH
n-VmC
nH
2n+1-CH＝CH-C
mH
2m+1HHH
nV-VmC
nH
2n+1-CH＝CH--CH＝CH-C
mH
2m+1HHH
TN and STN indicating meter is preferably containing the liquid crystal compound that the compound being selected from Table A and B by one or more is formed.
table A: (L
1, L
2, L
3=H or F)
table B:
table C
Table C shows the doping agent preferably used in mixture of the present invention:
table D
Indication example is as added the stablizer in mixture of the present invention to below:
It is to be appreciated that can still be within the scope of the present invention, variation is made to foregoing embodiments of the present invention.Unless otherwise specified, each feature disclosed in this specification sheets can replace to the alternative characteristics playing identical, equivalent or similar action.Therefore, unless otherwise specified, each disclosed feature is all equivalent or an example in the genus class series of similar characteristics.
Disclosed in this specification sheets, all features can combine in any combination, except the combination that at least some in wherein this kind of feature and/or step is got rid of mutually.Especially, preferred feature of the present invention is applicable to all aspects of the present invention and can arbitrary combination uses.Similarly, the feature described in optional combination can be used alone (not combinationally using).
It is to be appreciated that those of above-mentioned many features, particularly preferred embodiment, the ability with himself is creative, and is not only the part of embodiment of the present invention.Except any invention that this application claims protection or replace this application claims any invention of protection, these features of independent protective can be required.
Use following abbreviations:
Clp. clear point (nematic phase-isotropic phase transition temperature),
S-N smectic phase-nematic Phase temperature,
Δ n optical anisotropy (589 nanometers, 20 DEG C),
Δ ε dielectric anisotropy (1kHz, 20 DEG C),
ν
tkinetic viscosity (mm
2s
-1, at T/ DEG C),
γ
1rotary viscosity (mPas, at 20 DEG C),
K
1elastic constant (" tiltedly opening up ", the pN at 20 DEG C),
K " elastic constant (" torsion ", the pN at 20 DEG C),
K
3elastic constant (" bending ", the pN at 20 DEG C),
S characteristic line steepness=(1-V
90/ V
10)
*100,
D cel-gap (micron),
P courage steroid pitch (micron, at 20 DEG C),
Helical twisting power (the micron of HTPS-811
-1, at 20 DEG C),
V
10the character voltage of threshold voltage=under the relative contrast of 10%,
V
50the character voltage of middle grayscale voltage=under the relative contrast of 50%,
V
90the character voltage of saturation voltage=under the relative contrast of 90%,
τ is at V (τ
logical=τ
disconnected) under time of response (τ
logical+ τ
disconnected)
τ
logicalfrom the rise time of 0% to 90% relative contrast
τ
disconnectedfrom the fall time of 100% to 10% relative contrast
M multiplex transmission ratio, and
B bias voltage ratio.
In context, all temperature all by DEG C in units of provide.Per-cent is weight percent.Unless otherwise specified, all values is all relevant to 20 DEG C.Unless otherwise specified, indicating meter has the torsion of 240 °, and with the multiplex transmission ratio of 1/64 and the bias voltage addressing of 1/7.Unless otherwise specified, optical delay is 0.85 micron, and d/P ratio is 0.52.
Be described in more detail the present invention referring now to the following example, they are only exemplary but not limit the scope of the invention.
Prepare and study the liquid crystal compound provided in the following example.Then prepare and study respectively containing the STN indicating meter of one of these liquid crystal compounds.Show respective composition and accordingly result below.
Embodiment 1
ME2N.F2.50％Clp.：+98.0℃
ME3N.F3.50％Δn：0.1770
ME4N.F6.00％V
10：2.01V
DU-2-N7.00％S：7.7
K64.00％ν
20：18mm
2·s
-1
CC-3-V5.00％
CC-3-V18.00％HTP：-9.90μm
-1
CCP-V-12.00％
CCP-V2-112.50％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-323.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3012.50％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
Embodiment 2
ME2N.F2.50％Clp.：+95.0℃
ME3N.F3.50％Δn：0.1732
ME4N.F3.00％V
10：2.12V
PZU-V2-N7.00％S：6.3
K62.00％
CP-1V-N4.00％HTP：-10.14μm
-1
CC-3-V12.00％
CC-3-V18.00％
CCP-V-14.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-324.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3012.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
Embodiment 3
ME2N.F2.50％Clp.：+95.0℃
ME3N.F3.50％Δn：0.1780
ME4N.F4.50％V
10：2.02V
PZU-V2-N7.00％S：7.5
K64.50％
CC-3-V10.00％HTP：-10.29μm
-1
CC-3-V18.00％
CCP-V-15.50％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-324.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3012.50％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
Embodiment 4
ME2N.F2.50％Clp.：+92.0℃
ME3N.F3.50％Δn：0.1786
ME4N.F4.00％V
10：2.02V
PZU-V2-N7.00％S：7.8
K64.50％
CC-3-V15.00％HTP：-10.29μm
-1
CC-3-V14.00％
CCP-V2-13.50％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-324.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3014.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
Embodiment 5
DU-2-N8.00％Clp.：+93.0℃
PCH-2N.F.F10.50％Δn：0.2043
CP-1V-N10.00％V
10：1.81V
PP-1-2V18.00％S：8.9
CC-3-V12.50％
CCG-V-F10.00％HTP：-10.91μm
-1
CCP-V2-17.00％
PTP-1024.00％
CPTP-3015.00％
PPTUI-3-216.00％
PPTUI-3-415.00％
CCPC-334.00％
Embodiment 6
DU-2-N8.00％Clp.：+94.0℃
PCH-2N.F.F9.50％Δn：0.2037
CP-1V-N10.50％V
10：1.86V
PP-1-2V18.00％S：8.3
CC-3-V13.00％
CCG-V-F10.00％HTP：-11.01μm
-1
CCP-V2-18.00％
PTP-1024.00％
CPTP-3015.00％
PPTUI-3-215.50％
PPTUI-3-415.00％
CCPC-333.50％
Embodiment 7
ME2N.F2.50％Clp.：+94.0℃
ME3N.F3.50％Δn：0.1440
ME4N.F4.50％V
10：2.27V
PCH-2N.F.F7.00％S：7.6
CP-1V-N5.50％
PP-1-2V19.00％HTP：-9.69μm
-1
CC-4-V13.00％
CC-3-V18.00％
CCP-V-113.00％
CCP-V2-113.00％
BCH-324.50％
PTP-1023.50％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3033.50％
Embodiment 8
ME2N.F2.50％Clp.：+94.0℃
ME3N.F3.50％Δn：0.1430
ME4N.F4.00％V
10：2.34V
PCH-2N.F.F6.00％S：7.5
CP-1V-N6.00％γ
1：106mPa·s
PP-1-2V19.50％Δε：+8.3
CC-4-V13.50％k
1：14.5pN
CC-3-V18.00％K
3/k
1：1.25
CCP-V-113.00％
CCP-V2-113.00％HTP：-9.60μm
-1
BCH-325.00％
PTP-1023.50％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3032.50％
Embodiment 9
ME2N.F2.50％Clp.：+93.0℃
ME3N.F3.50％Δn：0.1442
ME4N.F3.50％V
10：2.23V
DU-2-N7.50％S：9.1
PP-1-2V18.50％
CC-4-V16.00％HTP：-9.04μm
-1
CC-3-V18.00％
CCP-V-113.00％
CCP-V2-113.00％
BCH-325.50％
PTP-1025.00％
PTP-2012.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3032.00％
Embodiment 10
ME2N.F2.50％Clp.：+93.0℃
ME3N.F3.50％Δn：0.1445
ME4N.F4.00％V
10：2.39V
PCH-2N.F.F6.00％S：7.8
CP-1V-N4.00％
PP-1-2V110.00％HTP：-9.38μm
-1
CC-4-V14.00％
CC-3-V18.00％
CCP-V-113.00％
CCP-V2-113.00％
BCH-325.00％
PTP-1025.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3032.00％
Embodiment 11
ME2N.F2.50％Clp.：+100.0℃
ME3N.F3.50％Δn：0.1778
ME4N.F4.00％V
10：2.03V
PZU-V2-N7.00％S：7.7
CP-1V-N8.00％ν
20：17mm
2·s
-1
CC-3-V15.50％
CCP-V-19.50％HTP：-9.83μm
-1
CVCP-1V-O15.00％
BCH-324.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3012.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
CBC-333.00％
CBC-532.00％
Embodiment 12
ME2N.F2.50％Clp.：+100.0℃
ME3N.F3.50％Δn：0.1787
ME4N.F4.00％V
10：1.97V
PZU-V2-N7.00％S：8.0
CP-1V-N9.50％
CC-3-V14.00％HTP：-10.10μm
-1
CCP-V-19.50％
CVCP-1V-O14.00％
BCH-324.00％
PP-1-2V111.00％
PTP-1025.00％
PTP-2015.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
CBC-333.00％
CBC-533.00％
Embodiment 13
ME2N.F2.50％Clp.：+100.0℃
ME3N.F3.50％Δn：0.1785
ME4N.F5.50％V
10：2.03V
DU-2-N6.00％S：7.2
CP-1V-N8.50％ν
20：18
CC-3-V12.00％
CCP-V-111.00％HTP：-9.92μm
-1
CVCP-1V-O13.00％
BCH-324.00％
PP-1-2V110.00％
PTP-1025.00％
PTP-2015.00％
PTP-3022.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
CBC-333.50％
CBC-533.50％
Embodiment 14
PCH-2N.F.F5.00％Clp.：+92.0℃
ME2N.F2.50％Δn：0.1745
ME3N.F3.50％V
10：1.87V
DU-2-N7.50％S：6.6
CP-1V-N10.00％
CC-4-V4.00％HTP：-10.65μm
-1
CC-3-V18.00％
CCP-V-113.00％
CCP-V2-15.50％
CVCP-1V-O15.00％
BCH-324.50％
PP-1-2V16.50％
PTP-1025.00％
CPTP-3015.00％
PPTUI-3-215.00％
Embodiment 15
PCH-2N.F.F6.00％Clp.：+91.0℃
ME2N.F2.50％Δn：0.1720
ME3N.F3.50％V
10：1.83mm
2·s
-1
DU-2-N7.50％S：6.9
CP-1V-N10.00％ν
20：19mm
2·s
-1
CC-4-V4.00％ν
-30：1,631mm
2·s
-1
CC-3-V18.00％
CCP-V-16.50％HTP：-10.86μm
-1
CCP-V2-18.00％
CVCP-V-O13.00％
CVCP-1V-O15.00
BCH-325.00％
PP-1-2V17.50％
PTP-1023.50％
CPTP-3015.00％
PPTUI-3-215.00％
Embodiment 16
PCH-2N.F.F6.00％Clp.：+91.0℃
ME2N.F2.50％Δn：0.1720
ME3N.F3.50％V
10：1.83
DU-2-N7.50％S：7.1
CP-1V-N10.00％
CC-4-V4.00％HTP：-10.75μm
-1
CC-3-V18.00％
CCP-V-112.00％
CCP-V2-18.00％
CVCP-1V-O14.00％
BCH-324.50％
PP-1-2V15.00％
PTP-1025.00％
CPTP-3015.00％
PPTUI-3-215.00％
Embodiment 17
ME2N.F2.50％Clp.：+92.0℃
ME3N.F3.50％Δn：0.1789
ME4N.F4.00％V
10：2.00V
PZU-V2-N7.00％S：7.6
K64.50％ν
20：16mm
2·s
-1
CC-3-V17.00％
CCP-V-15.50％HTP：-10.29μm
-1
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-324.00％
PP-1-2V19.00％
PTP-1025.00％
PTP-2015.00％
PTP-3014.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3035.00％
Embodiment 18
PZU-V2-N4.00％Clp.：+89.0℃
CP-1V-N10.00％Δn：0.1531
K67.00％V
10：2.56V
CC-3-V16.00％S：5.2
PP-1-2V110.00％
PTP-1024.00％HTP：-10.16μm
-1
PTP-2014.00％
PTP-3014.00％
CCP-V-18.00％
CCP-V2-18.00％
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-325.00％
BCH-525.00％
Embodiment 19
PZU-V2-N3.00％Clp.：+90.0℃
CP-1V-N11.00％Δn：0.1530
K68.00％V
10：2.59V
CC-3-V18.00％S：3.7
PCH-30110.00％
PP-1-2V19.00％HTP：-10.71μm
-1
PTP-1023.00％
PTP-2013.00％
PTP-3013.00％
CCP-V-18.00％
CCP-V2-19.00％
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-325.00％
BCH-525.00％
Embodiment 20
PZU-V2-N4.00％Clp.：+92.0℃
CP-1V-N13.00％Δn：0.1538
K68.00％V
10：2.42V
PCH-30214.00％S：4.6
PP-1-2V110.00％
PTP-1023.00％HTP：-10.77μm
-1
PTP-2013.00％
CCP-V-110.00％
CCP-V2-110.00％
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
BCH-325.00％
BCH-525.00％
Embodiment 21
ME2N.F2.50％Clp.：+109℃
DU-2-N7.00％Δn：0.1418
PCH-2N.F.F4.50％V
10：2.19V
CP-1V-N8.50％S：4.1
PP-1-2V15.50％
CC-3-V18.00％M：240
CCG-V-F8.50％B：16
CCP-V-113.00％τ：496ms
CCP-V2-113.00％
BCH-325.00％HTP：-10.9μm
-1
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PPTUI-3-29.50％
Embodiment 22
ME2N.F2.50％Clp.：+109℃
DU-2-N7.00％Δn：0.1407
PCH-2N.F.F6.00％V
10：2.19V
CP-1V-N5.00％S：4.6
PP-1-2V15.50％
CC-3-V18.00％M：240
CCG-V-F10.00％B：16
CCP-V-113.00％τ：494ms
CCP-V2-113.00％
BCH-325.00％HTP：-10.7μm
-1
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PPTUI-3-210.00％
Embodiment 23
ME2N.F2.50％Clp.：+110℃
DU-2-N7.00％Δn：0.1416
PCH-2N.F.F3.50％Δε：9.5
CP-1V-N9.50％V
10：2.22V
PP-1-2V16.00％S：4.2
CC-3-V18.00％γ
1：143mPa·s
CCG-V-F8.50％M：240
CCP-V-113.00％B：16
CCP-V2-113.00％τ：496ms
BCH-325.00％
CVCP-V-15.00％HTP：-10.9μm
-1
CVCP-V-O15.00％
CVCP-1V-O15.00％
PPTUI-3-29.00％
Embodiment 24
ME2N.F2.50％Clp.：+108℃
DU-2-N7.00％Δn：0.1409
PCH-2N.F.F3.00％V
10：2.20V
CP-1V-N12.50％S：4.2
PP-1-2V13.50％
CC-4-V4.50％M：240
CC-3-V18.00％B：16
CCG-V-F3.00％τ：475ms
CCP-V-113.00％
CCP-V2-113.00％HTP：-10.8μm
-1
BCH-325.00％
CVCP-V-15.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PPTUI-3-210.00％
Embodiment 25
ME2N.F3.00％Clp.：+92℃
ME3N.F3.00％Δn：0.1317
ME4N.F5.50％V
10：1.82V
PZU-V2-N7.00％S：5.9
CP-1V-N16.00％
CC-3-V18.00％
CC-4-V8.50％M：240
PP-1-2V15.00％B：16
CCP-V-111.50％τ：500ms
CCP-V2-111.00％
BCH-325.00％HTP：-11.0μm
-1
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PTP-1022.50％
Embodiment 26
ME2N.F3.00％Clp.：+92℃
ME3N.F3.00％Δn：0.1302
ME4N.F6.00％V
10：1.78V
PZU-V2-N7.00％S：5.6
CP-1V-N16.00％
CC-3-V18.00％M：240
CC-4-V8.50％B：16
PP-1-2V15.00％τ：537ms
CCP-V-112.00％
CCP-V2-111.00％HTP：-11.3μm
-1
BCH-325.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PTP-1021.50％
Embodiment 27
ME2N.F2.50％Clp.：+93℃
ME3N.F3.00％Δn：0.1308
ME4N.F4.00％V
10：1.84V
PZU-V2-N7.00％S：4.7
CP-1V-N16.00％
PCH-35.00％M：240
CC-3-V18.00％B：16
CC-4-V6.50％τ：538ms
PP-1-2V15.00％
CCP-V-113.00％HTP：-11.3μm
-1
CCP-V2-110.00％
BCH-325.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PTP-1021.00％
Embodiment 28
ME2N.F2.50％Clp.：+90℃
ME3N.F3.00％Δn：0.1299
ME4N.F4.00％V
10：1.82V
PZU-V2-N7.00％S：4.7
CP-1V-N16.50％
PCH-33.50％M：240
CC-3-V18.00％B：16
CC-4-V8.50％τ：540ms
PP-1-2V15.00％
CCP-V-114.00％HTP：-11.7μm
-1
CCP-V2-17.50％
BCH-325.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PTP-1021.50％
Embodiment 29
ME2N.F2.50％Clp.：+99℃
ME3N.F3.50％Δn：0.1577
DU-2-N6.00％V
10：2.25V
PCH-3N.F.F2.00％S：6.8
K64.00％
CC-3-V16.00％M：64
CC-3-V18.00％B：9
CCP-V-113.00％τ：218ms
CCP-V2-113.00％
CVCP-1V-O13.00％HTP：-9.6μm
-1
BCH-325.00％
PP-1-2V12.00％
PTP-1025.00％
CPTP-3015.00％
PPTUI-3-212.00％
Embodiment 30
ME2N.F2.50％Clp.：+100℃
ME3N.F3.00％Δn：0.1574
DU-2-N6.00％V
10：2.29V
PCH-3N.F.F2.00％S：6.9
K64.00％
CC-3-V16.00％M：64
CC-3-V18.00％B：9
CCP-V-113.00％τ：215ms
CCP-V2-114.00％
CVCP-1V-O12.50％HTP：-9.6μm
-1
BCH-325.00％
PP-1-2V12.00％
PTP-1025.00％
CPTP-3015.00％
PPTUI-3-212.00％
Embodiment 31
ME2N.F2.00％Clp.：+92℃
ME3N.F3.00％Δn：0.1287
DU-2-N5.50％V
10：1.74V
PZU-V2-N7.00％S：4.9
CP-1V-N16.00％
PCH-34.50％M：240
CC-3-V18.00％B：16
CC-4-V3.50％τ：494ms
PP-1-2V15.00％
CCP-V-114.00％HTP：-11.3
CCP-V2-111.50％
BCH-325.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O15.00％
PTP-1021.00％
Embodiment 32
ME2N.F2.00％Clp.：+91℃
ME3N.F2.50％Δn：0.1298
DU-2-N4.50％V
10：1.79V
PZU-V2-N7.00％S：4.5
CP-1V-N16.00％
PCH-35.00％M：240
CC-3-V18.00％B：16
CC-4-V4.50％τ：525ms
PP-1-2V15.00％
CCP-V-115.00％HTP：-11.4μm
-1
CCP-V2-110.00％
BCH-325.00％
CVCP-V-14.00％
CVCP-V-O15.00％
CVCP-1V-O14.50％
PTP-1022.00％
Embodiment 33
ME2N.F2.50％Clp.：+95℃
ME3N.F3.50％Δn：0.1451
ME4N.F4.00％V
10：2.34V
PCH-3N.F9.50％S：7.8
K64.00％
PP-1-2V18.00％M：64
CC-4-V14.00％B：9
CC-3-V18.00％τ：181ms
CCP-V-113.00％
CCP-V2-113.00％HTP：-9.5μm
-1
BCH-325.00％
PTP-1023.00％
CPTP-3015.00％
CPTP-3025.00％
CPTP-3032.50％
Embodiment 34
PCH-2N.F.F5.50％Clp.：+91℃
ME2N.F2.50％Δn：0.1721
ME3N.F3.50％V
10：1.83V
DU-2-N7.50％S：6.6
CP-1V-N10.00％
CC-4-V4.00％M：240
CC-3-V18.00％B：16
CCP-V-19.00％τ：267ms
CVCP-V-O14.00％
CVCP-1V-O15.00％HTP：-10.5μm
-1
BCH-325.00％
PP-1-2V18.00％
PTP-1025.00％
PTP-2012.00％
CPTP-3015.00％
PPTUI-3-26.00％
CPTP-3210.00％
Claims (6)
1., for the liquid crystal media of TN or stn liquid crystal indicating meter, Δ ε >=1 of this liquid crystal media, is characterized in that this liquid crystal media comprises the compound of the formula I of 2 to 30%
Wherein said liquid crystal media comprises in addition and is greater than the formula IV24a of 0 to 30% and/or the compound of IV24b
Wherein R
3ah, CH
3, C
2h
5or n-C
3h
7, and " alkyl " is the alkyl containing 1 to 8 carbon atom,
And described liquid crystal media comprises the compound of the formula III a to IIIi of 10 to 30% in addition
Wherein
R has the alkyl of 1 to 12 carbon atom, alkoxyl group or alkenyl, the one or more CH wherein in these groups
2group also can be substituted by-O-,-CH=CH-,-CO-,-OCO-or-COO-in the mode that O atom is not directly connected to each other separately independently of one another, and
L
1for F;
L
2, L
3and L
4be H or F independently of one another;
And described liquid crystal media comprises formula IIa to IIi and/or the II of 8 to 70% in addition
*compound,
Wherein R
3aand R
4abe H, CH independently of one another
3, C
2h
5or n-C
3h
7, and " alkyl " is the alkyl with 1 to 8 carbon atom,
R
3the alkenyl with 2 to 7 carbon atoms,
Q is CF
2, OCF
2, CFH, OCFH or singly-bound,
Y is F or C1, and
L
1and L
2be H or F independently of one another;
And described liquid crystal media comprises the compound of the formula Ta to Tc of 4 to 50% in addition,
Wherein
R
1and R
2be independently of one another unsubstituted, by CN or CF
3mono-substituted or by least mono-substituted alkyl with 1 to 12 carbon atom of halogen, the one or more CH wherein in these groups
2group also can be substituted by-O-,-S-,-CH=CH-,-C ≡ C-,-CO-,-CO-O-,-O-CO-or-O-CO-O-in the mode that O atom is not directly connected to each other separately independently of one another;
And described liquid crystal media comprises the formula IV12 of 0 to 20% and/or the compound of IV27 and/or IV32 in addition
Wherein R
1and R
2be independently of one another unsubstituted, by CN or CF
3mono-substituted or by least mono-substituted alkyl with 1 to 12 carbon atom of halogen, the one or more CH wherein in these groups
2group also can be substituted by-O-,-S-,-CH=CH-,-C ≡ C-,-CO-,-CO-O-,-O-CO-or-O-CO-O-in O atom mode not directly connected to each other independently of one another separately and
L is H or F.
2. liquid crystal media according to claim 1, is characterized in that Δ ε >=5 of described liquid crystal media.
3. the purposes of electrooptics object is used for according to the liquid crystal media of claim 1 or 2.
4. comprise the electrooptics liquid-crystal display of the liquid crystal media according to claim 1 or 2.
5.TN or stn liquid crystal indicating meter, it has
-two outside plates, they form liquid crystal cell together with framework,
-be positioned at the nematic liquid crystal mixtures with positive dielectric anisotropy of this liquid crystal cell,
-inside outside plate on the electrode layer with oriented layer,
Pitch angle between the molecule longitudinal axis at-outer plate surfaces place and outside plate is 0 ° to 30 °, and
The torsion(al)angle numerical value of liquid crystal compound in-liquid crystal cell from oriented layer to oriented layer is 22.5 ° to 600 °,
-nematic liquid crystal mixtures, it is made up of following material:
A) liquid crystal that forms of the compound that there is the dielectric anisotropy being greater than+1.5 by one or more of 15-75 % by weight
component A;
B) liquid crystal that forms of the compound of the dielectric anisotropy had between-1.5 to+1.5 by one or more of 25-85 % by weight
b component;
C) 0-20's % by weight has by one or more liquid crystal that compound lower than the dielectric anisotropy of-1.5 forms
component D; With
D) optionally, optically-active
component C, its amount makes the ratio between layer thickness (outer distance between plates) and the natural pitch of chiral nematic liquid crystal mixture be 0.2 to 1.3,
It is characterized in that nematic liquid crystal mixtures is the liquid crystal media according to claim 1 or 2.
6. preparation is according to the method for the liquid crystal media of claim 1 or 2, and it passes through the compound limited in claim 1 or 2 or compound other to itself and one or more and/or additive are mixed and carried out.
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| CN101402866B (en) * | 2008-04-03 | 2012-12-12 | 河北迈尔斯通电子材料有限公司 | Mixed liquid crystal composition for STN-LCD |
| CN101629081B (en) * | 2008-07-17 | 2014-09-10 | 默克专利股份有限公司 | Liquid crystal medium |
| JP5646827B2 (en) * | 2008-07-25 | 2014-12-24 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ Ｇｅｓｅｌｌｓｃｈａｆｔ ｍｉｔ ｂｅｓｃｈｒａｅｎｋｔｅｒ Ｈａｆｔｕｎｇ | Liquid crystal medium and liquid crystal display having high twist |
| KR101541138B1 (en) * | 2008-12-16 | 2015-08-03 | 주식회사 동진쎄미켐 | New Liquid Crystal Compounds and method for preparing the same |
| KR101800035B1 (en) * | 2009-10-24 | 2017-11-22 | 메르크 파텐트 게엠베하 | Compounds for a liquid crystal medium and use for high-frequency components |
| CN102010287B (en) * | 2010-10-20 | 2013-04-17 | 石家庄诚志永华显示材料有限公司 | Method for synthesizing (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals |
| KR101990164B1 (en) * | 2011-09-05 | 2019-06-17 | 메르크 파텐트 게엠베하 | Liquid-crystalline medium and high-frequency components comprising same |
| EP2735600B1 (en) * | 2012-07-18 | 2018-01-17 | DIC Corporation | Nematic liquid crystal composition and liquid crystal display element using same |
| CN102899050B (en) * | 2012-10-13 | 2015-02-25 | 江苏和成显示科技股份有限公司 | Liquid crystal composition and displayer having same |
| CN103351876B (en) * | 2013-06-25 | 2015-02-11 | 江苏和成显示科技股份有限公司 | Liquid crystal composition and liquid crystal display device thereof |
| CN103361077B (en) * | 2013-06-25 | 2015-04-08 | 江苏和成显示科技股份有限公司 | Liquid crystal composition and display comprising same |
| EP3144367B1 (en) * | 2014-05-13 | 2019-08-07 | DIC Corporation | Nematic liquid crystal composition and liquid crystal display device using same |
| CN109722258B (en) * | 2017-10-27 | 2020-09-29 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition containing pentenyl compound and application thereof |
| CN114787318A (en) * | 2019-12-24 | 2022-07-22 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition capable of adapting to wider working temperature and application thereof in device |
| CN114437738A (en) * | 2020-11-05 | 2022-05-06 | 江苏和成显示科技有限公司 | Liquid crystal composition and liquid crystal display device thereof |
| CN115029142B (en) * | 2021-03-04 | 2023-10-24 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition and application thereof |
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| DE10216197B4 (en) * | 2002-04-12 | 2013-02-07 | Merck Patent Gmbh | Liquid crystal medium and its use in an electro-optical display |
| ATE353097T1 (en) * | 2002-12-21 | 2007-02-15 | Merck Patent Gmbh | LIQUID CRYSTALLINE MEDIUM |
| DE102004012131B4 (en) * | 2003-04-07 | 2012-11-15 | Merck Patent Gmbh | Liquid crystalline mixtures and their use |
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| JP5542299B2 (en) | 2014-07-09 |
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