CN103468271A - Positive dielectric anisotropy liquid crystal composition - Google Patents
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- CN103468271A CN103468271A CN2013104419005A CN201310441900A CN103468271A CN 103468271 A CN103468271 A CN 103468271A CN 2013104419005 A CN2013104419005 A CN 2013104419005A CN 201310441900 A CN201310441900 A CN 201310441900A CN 103468271 A CN103468271 A CN 103468271A
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- IHDARUJNUZJCJJ-UHFFFAOYSA-N CC1COC(C)NC1 Chemical compound CC1COC(C)NC1 IHDARUJNUZJCJJ-UHFFFAOYSA-N 0.000 description 1
- RPMUDXVQHUECRE-UHFFFAOYSA-N CC1COC(C)OC1 Chemical compound CC1COC(C)OC1 RPMUDXVQHUECRE-UHFFFAOYSA-N 0.000 description 1
- CFFHCMKGIPEENO-UHFFFAOYSA-N CC1Cc2cc(F)c(C)c(F)c2CC1 Chemical compound CC1Cc2cc(F)c(C)c(F)c2CC1 CFFHCMKGIPEENO-UHFFFAOYSA-N 0.000 description 1
- HBXFIXSFKULBOG-UHFFFAOYSA-N Cc1cc(F)c(C)c(F)c1 Chemical compound Cc1cc(F)c(C)c(F)c1 HBXFIXSFKULBOG-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a positive dielectric anisotropy liquid crystal composition which comprises 5-60 wt% of component A, 1-60 wt% of component B, 1-40 wt% of component C and 0-40 wt% of component D, wherein the component A is composed of at least one compound disclosed as general formula I and at least one compound disclosed as general formula II; the component B is composed of one or more of compounds disclosed as general formula III; the component is composed of one or more of compounds disclosed as general formula IV; the component D is composed of one or more of compounds disclosed as general formula V; and an optical rotation component, which accounts for 0-0.5 wt% of the liquid crystal composition, is also added. The composition has the advantages of low rotary viscosity, high response speed and proper positive dielectric anisotropy, and is especially suitable for manufacturing quick-response active matrix TN-TFT and IPS-TFT liquid crystal display elements and liquid crystal display devices.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, refer in particular to a kind of positive dielectric anisotropy liquid crystal composition that can be used for manufacturing quick loud TFT-LCD.
Background technology
In recent years, liquid-crystal display has been substituted traditional cathode-ray tube display, becomes the main product of current field of information display, is widely used in the various indicating meters such as instrument, computer, TV.According to the difference of liquid-crystal display mode, liquid crystal display device can be divided into the various modes such as twisted nematic (TN) pattern, supertwist nematic phase (STN) pattern, coplanar (IPS) pattern, vertical orientation (VA) pattern.
Thin Film Transistor-LCD (Thin Film Transistor Liquid Crystal Display, TFT-LCD), be 21 century one of the most rising technique of display, in fields such as notebook computer, LCD TV, all is widely used.TFT-LCD introduces thin film transistor switch and the Active Matrix LCD At that forms on twisted nematic liquid crystal shows the basis of (TN-LCD), overcome passive matrix show in few, the writing speed of cross interference, quantity of information wait slowly shortcoming, greatly improve display quality, therefore obtained fast development.
The advantage of TFT-LCD can be summarized as following 5 points: 1. service performance is good: low pressure applications, low driving voltage; Panelized, frivolous again, saved a large amount of starting material and usage space; Reduce power consumption; Display quality is from the simplest monochromatic character graphics to high resolving power, high color fidelity of reproduction, high brightness, high-contrast, the video display unit (VDU) of all size model of high response speed; Its display mode has direct viewing type, projection type, perspective formula and the multiple display modes such as reflective.2. environmental protection characteristic is good: TFT-LCD is radiationless, flicker free, health to the user is harmless, the particularly appearance of TFT-LCD electronic book, will bring the mankind paperless office into, without paper, print the epoch, cause the revolution that the mankind learn, propagate and put down in writing civilized mode.3. the scope of application is wide: TFT-LCD can normally be used in-20 ℃～50 ℃ scopes, through the TFT-LCD of excess temperature consolidation process low-temperature working temperature, even can reach-80 ℃.TFT-LCD not only can be used as the mobile terminal demonstration, terminal console shows, also can be used as large-curtain projecting TV set, is the full-scale video display terminal (VDT) of excellent property.4. the level of automation of manufacturing technology is high.5. TFT-LCD is easy to integrated and updates.
One of photoelectron material that liquid crystal material is important as liquid-crystal display, play an important role to the performance of improving liquid-crystal display.For showing that the liquid crystal material of use all needs to meet following performance: 1. good chemistry, physics and thermostability, to the stability of electric field and electromagnetic radiation; 2. viscosity (γ 1) is low; 3. there is suitable dielectric anisotropy △ ε; 4. suitable optical anisotropy △ n; 5. good with the intermiscibility of other liquid crystalline cpds.And as the TFT-LCD liquid crystal material, there is the requirement higher than common liquid crystals material, except above-mentioned characteristic, also should there is the performances such as wider nematic temperature range, very high resistivity, good anti-ultraviolet property, high electric charge conservation rate, low-steam pressure, low ion concns, reduce power consumption.
One of photoelectron material that liquid crystal material is important as liquid-crystal display, play an important role to the performance of improving liquid-crystal display.Use liquid crystal material as showing, to necessarily require wider nematic temperature range, higher stability, applicable rotary viscosity and to the quick response of electric field.But up to the present, also do not find any single liquid crystalline cpd can reach above-mentioned performance requriements, the plurality of liquid crystals compound combination must be become to liquid-crystal composition, can meet the performance requriements of liquid crystal display material.
Fluoro liquid crystals is because characteristics such as having low viscosity, moderate dielectric anisotropy, high resistivity, high electric charge conservation rate is the main component of TFT liquid-crystal display with liquid crystal material.Introduce the inferior methoxyl group bridge of a difluoro (CF in liquid crystal molecule
2o-) after, can make its nematic temperature range enlarge significantly, simultaneously rotary viscosity γ
1also decrease.In addition due to the inferior methoxyl group bridge of difluoro (CF
2o-) contribution of antithesis polar moment, the moment of dipole of end group fluorine atom also is improved to some extent, thereby the dielectric anisotropy △ ε of liquid crystal molecule is increased to some extent.What Merck KGaA and Japanese Chisso Corporation disclosed that some have a different substituents has the inferior methoxyl group bridge of a difluoro (CF
2o-) liquid crystalline cpd (CN1717468A, CN101143808A, CN101157862A etc.), and be applied in liquid-crystal composition.
Along with the development of liquid-crystal display industry, people also increase gradually for the demand of the display material with different performance.Therefore, the liquid-crystal composition of continually developing new excellent performance has great importance to the liquid-crystal display development.
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of positive dielectric anisotropy liquid crystal composition quick response TFT-LCD, that rotary viscosity is low, that threshold voltage is low that can be used for preparing.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of positive dielectric anisotropy liquid crystal composition, the component A that to comprise weight percentage be 5%～60%, 1%～60% B component, 1%～40% component C and 0%～40% component D; Described component A is comprised of at least one generalformulaⅰcompound and at least one general formula II compound, and described B component is comprised of one or more general formula III compounds; Described component C is comprised of one or more general formula IV compounds; Described component D is comprised of one or more general formula V compounds; Also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum;
In above-mentioned general formula,
R
1, R
2, R
3, R
5be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10;
R
4, R
6it is respectively the H atom, the alkyl that the alkyl that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkoxyl group that the alkoxyl group that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkenyl that the alkenyl that carbonatoms is 2～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 2～10, wherein arbitrary group of the alkenyloxy that the alkenyloxy that carbonatoms is 3～8 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 3～8,
X
1, X
2, X
3, X
5be respectively-H or-F;
X
4, X
6be respectively 1. following～4. shown in arbitrary group in group:
①-H、-Cl、-F、-CN、-OCN、-OCF
3、-CF
3、-CHF
2、-CH
2F、-OCHF
2、-SCN、-NCS、-SF
5，
2. the alkene oxygen base that the thiazolinyl that the alkoxyl group that the alkyl that carbonatoms is 1～15, carbonatoms are 1～15, carbonatoms are 2～15, carbonatoms are 2～15,
3. one or more-CH
2-quilt-CH=CH-,-C ≡ C-,-COO-,-OOC-,
-O-or-S-substitute and substitute after Sauerstoffatom in group directly be not connected above-mentioned 2. shown in group,
4. arbitrarily the H atom is replaced by fluorine atom or chlorine atom above-mentioned 2., 3. shown in group;
Z
1, Z
2, Z
3, Z
4, Z
5be respectively singly-bound ,-CH
2-,-CH
2cH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-CF
2o-,-OCH
2-,-CH
2o-,-OCF
2-,-CF
2cH
2-,-CH
2cF
2-,-CF
2cF
2-or-CF=CF-wherein any one;
A, b, d, e, g, h, i, j are respectively wherein arbitrary numerical value of 0,1,2 or 3, and c, f are respectively 1 or 2, and a+b+c≤5, d+e+f≤5.
Further improvement of the present invention is: described liquid-crystal composition comprises component A that weight percentage is 28%～39%, 29%～52% B component, 14%～34% component C and 0%～15% component D; The weight percentage sum of said components A, B, C, D is 100%; Also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum.
Further improvement of the present invention is: in described component A, the weight percentage that generalformulaⅰcompound accounts for liquid-crystal composition is 1%～50%.
Further improvement of the present invention is: in described component A, the weight percentage that generalformulaⅰcompound accounts for liquid-crystal composition is 21%～33%.
Further improvement of the present invention is: in described component A, the weight percentage that general formula II compound accounts for liquid-crystal composition is 1%～50%.
Further improvement of the present invention is: in described component A, the weight percentage that general formula II compound accounts for liquid-crystal composition is 6%～10%.
Further improvement of the present invention is: the generalformulaⅰcompound in described component A is one or more in compound shown in formula I-a～formula I-w:
General formula II compound in described component A is one or more in compound shown in formula II-a～formula II-f:
Be wherein ,-(F)-H or-F;
R
1, R
2be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5in any one.
Further improvement of the present invention is: the described III of the general formula as B component compound is one or more in compound shown in formula III-a～formula III-i:
Be wherein ,-(F)-H or-F;
R
3, R
4respectively the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8.
Further improvement of the present invention is: the described IV of the general formula as component C compound is one or more in compound shown in formula IV-a～formula IV-l:
Be wherein ,-(F)-H or-F;
R
5the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
4be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
Further improvement of the present invention is: the described V of the general formula as component D compound is one or more in compound shown in formula V-a～formula V-v:
Be wherein ,-(F)-H or-F;
R
6the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
6be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
Owing to having adopted technique scheme, the obtained technical progress of the present invention is:
The invention discloses a kind of positive dielectric anisotropy liquid crystal composition, the said composition excellent performance, there is the positive dielectric anisotropy that wide nematic temperature range, absolute value are very large, suitable optical anisotropy, lower rotary viscosity, low-down overall response time, lower threshold voltage, higher resistivity and higher electric charge conservation rate, be applicable in active matrix electrooptic element and liquid-crystal display, can be used for manufacturing the TFT-LCD of quick response, have broad application prospects and marketable value.
By the adjustment to each composition weight percentage composition in liquid-crystal composition, liquid-crystal composition can obtain different threshold voltages, clearing point and birefringent characteristic, is convenient to use under thick at different liquid crystal cells in different driving voltage, and the scope of application is very wide.Simultaneously, this liquid-crystal composition also has good high-temperature stability and ultraviolet stability, low viscosity, fast-response time, suitable optical anisotropy and suitable dielectric anisotropy, therefore can be applicable to have the Electro-Optical Display of active array addressing, preferably, by the matrix addressing of thin film transistor (TFT), be specially adapted to manufacture active matrix TN-TFT, IPS-TFT liquid crystal display device and the liquid-crystal display of quick response.
The novel difluoro methylene ether compound of two classes shown in formula I in liquid-crystal composition component A, general formula II, not only there is the necessary general physical properties of liquid crystal material, and, to light, thermally-stabilised, there is wider nematic temperature range, good with other Compound Phase dissolubilities; The characteristic of low rotary viscosity γ that especially the novel difluoro methylene ether compound of this two class has 1 and large dielectric anisotropy (△ ε > 0), can significantly reduce the threshold voltage of liquid-crystal composition, and obviously accelerate the time of response, improve the low temperature mutual solubility of mixed liquid crystal, and then obviously optimize the performance of liquid-crystal composition, be to be applicable to very much low voltage drive, the TN-TFT of response fast or the liquid crystal monomer of IPS-TFT.The use of this two compounds, make liquid-crystal composition have very excellent performance, to developing high-end TFT demonstration, with liquid crystal material, is significant.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details:
Umber related in following embodiment is weight percentage, and temperature unit is ℃ that concrete meaning and the test condition of other symbols are as follows:
C.p. mean liquid crystal clearing point (℃);
The crystalline state that S-N means liquid crystal to nematic fusing point (℃);
Δ n means optical anisotropy, △ n=n
o-n
e, wherein, n
ofor the specific refractory power of ordinary light, n
efor the specific refractory power of extraordinary ray, test condition: 589nm, 25 ℃;
△ ε means dielectric anisotropy, △ ε=ε
∥-ε
⊥, wherein, ε
∥for being parallel to the specific inductivity of molecular axis, ε
⊥for the specific inductivity perpendicular to molecular axis, test condition: 25 ℃, 1KHz, HP4284A, 5.2 microns left-handed boxes of TN;
τ means the time of response (ms), testing tool: DMS-501, test condition: 25 ± 0.5 ℃, the 5.2 microns left-handed boxes of TN;
V
10the optical threshold voltage (V) that means liquid crystal, V
90the saturation voltage value (V) that means liquid crystal, test condition: 25 ℃, the 5.2 microns left-handed boxes of TN;
γ 1 means rotary viscosity (mPas), test condition: 25 ± 0.5 ℃.
A kind of positive dielectric anisotropy liquid crystal composition, the component A that to comprise weight percentage be 5%～60%, 1%～60% B component, 1%～40% component C and 0%～40% component D; Described component A is comprised of at least one generalformulaⅰcompound and at least one general formula II compound, and described B component is comprised of one or more general formula III compounds; Described component C is comprised of one or more general formula IV compounds; Described component D is comprised of one or more general formula V compounds; Also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum;
In above-mentioned general formula,
R
1, R
2, R
3, R
5be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5or the arbitrary group in the carbonatoms alkyl that is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10;
R
4, R
6it is respectively the H atom, the alkyl that the alkyl that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkoxyl group that the alkoxyl group that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkenyl that the alkenyl that carbonatoms is 2～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 2～10, wherein arbitrary group of the alkenyloxy that the alkenyloxy that carbonatoms is 3～8 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 3～8,
R
4, R
6preferably from the H atom, the alkyl that the alkyl that carbonatoms is 1～5 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～5, the alkoxyl group that the alkoxyl group that carbonatoms is 1～5 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～5, the alkenyl that the alkenyl that carbonatoms is 2～6 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 2～6, wherein arbitrary group of the alkenyloxy that the alkenyloxy that carbonatoms is 3～6 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 3～6,
X
1, X
2, X
3, X
5be respectively-H or-F;
X
4, X
6be respectively 1. following～4. shown in arbitrary group in group:
①-H、-Cl、-F、-CN、-OCN、-OCF
3、-CF
3、-CHF
2、-CH
2F、-OCHF
2、-SCN、-NCS、-SF
5，
2. the alkene oxygen base that the thiazolinyl that the alkoxyl group that the alkyl that carbonatoms is 1～15, carbonatoms are 1～15, carbonatoms are 2～15, carbonatoms are 2～15,
3. one or more-CH
2-quilt-CH=CH-,-C ≡ C-,-COO-,-OOC-,
-O-or-S-substitute and substitute after Sauerstoffatom in group directly be not connected above-mentioned 2. shown in group,
4. arbitrarily the H atom is replaced by fluorine atom or chlorine atom above-mentioned 2., 3. shown in group;
X
4, X
6preferably from 5. following～8. shown in arbitrary group in group:
⑤-H、-Cl、-F、-CN、-OCN、-OCF
3、-CF
3、-CHF
2、-CH
2F、-OCHF
2、-SCN、-NCS、-SF
5，
6. the alkene oxygen base that the thiazolinyl that the alkoxyl group that the alkyl that carbonatoms is 1～5, carbonatoms are 1～5, carbonatoms are 2～5, carbonatoms are 2～5,
7. one or more-CH
2-quilt-CH=CH-,-C ≡ C-,-COO-,-OOC-,
-O-or-S-substitute and substitute after Sauerstoffatom in group directly be not connected above-mentioned 6. shown in group,
8. arbitrarily the H atom is replaced by fluorine atom or chlorine atom above-mentioned 6., 7. shown in group;
Z
1, Z
2, Z
3, Z
4, Z
5be respectively singly-bound ,-CH
2-,-CH
2cH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-CF
2o-,-OCH
2-,-CH
2o-,-OCF
2-,-CF
2cH
2-,-CH
2cF
2-,-CF
2cF
2-or-CF=CF-wherein any one;
A, b, d, e, g, h, i, j are respectively wherein arbitrary numerical value of 0,1,2 or 3, and c, f are respectively 1 or 2, and a+b+c≤5, d+e+f≤5.
Described liquid-crystal composition preferably comprises component A that weight percentage is 28%～39%, 29%～52% B component, 14%～34% component C and 0%～15% component D; The weight percentage sum of said components A, B, C, D is 100%; Also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum.
In the component A of described liquid-crystal composition, the weight percentage that generalformulaⅰcompound accounts for liquid-crystal composition is 1%～50%, preferably 21%～33%.
In the component A of described liquid-crystal composition, the weight percentage that general formula II compound accounts for liquid-crystal composition is 1%～50%, is preferably 6%～10%.
One or more shown in generalformulaⅰcompound preferred formula I-a in described component A～formula I-w in compound:
One or more shown in general formula II compound preferred formula II-a in described component A～formula II-f in compound:
Be wherein ,-(F)-H or-F;
R
1, R
2be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5in any one.
One or more shown in the described III of the general formula as B component compound preferred formula III-a～formula III-i in compound:
Be wherein ,-(F)-H or-F;
R
3, R
4respectively the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8.
One or more shown in the described IV of the general formula as component C compound preferred formula IV-a～formula IV-l in compound:
Be wherein ,-(F)-H or-F;
R
5the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
4be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
One or more shown in the described V of the general formula as component D compound preferred formula V-a～formula V-v in compound:
Be wherein ,-(F)-H or-F;
R
6the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
6be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
The following examples 1～10 take respectively the liquid crystalline cpd with formula I, II, III, IV, V in proportion, and add on this basis the opticity component, are prepared into liquid-crystal composition.The various liquid crystal monomers that use all can be synthesized by known method, or obtain by commercial sources.The preparation method of liquid-crystal composition takes ordinary method, for example at high temperature the liquid crystal monomer of various components is dissolved in solvent and is mixed, and then under reduced pressure, steams and desolventizes, and obtains liquid-crystal composition; Or take the methods such as heating, ultrasonic wave, suspension that liquid crystal monomer is mixed in proportion and makes.The liquid-crystal composition of gained is filled between the liquid-crystal display two substrates and carries out performance test.The performance parameter test result of the liquid-crystal composition of the monomer structure of particular compound, consumption (weight percentage), gained is all listed in table.The corresponding embodiment 1～10 in table 1～10.
The component proportion of the liquid-crystal composition of table 1 embodiment 1 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 2 embodiment 2 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 3 embodiment 3 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 4 embodiment 4 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 5 embodiment 5 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 6 embodiment 6 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 7 embodiment 7 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 8 embodiment 8 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 9 embodiment 9 and performance perameter thereof
The component proportion of the liquid-crystal composition of table 10 embodiment 10 and performance perameter thereof
From the performance perameter of the liquid-crystal composition shown in embodiment 1～10, liquid-crystal composition of the present invention have positive dielectric anisotropy that absolute value is very large, applicable optical anisotropy, lower threshold voltage, higher clearing point, very low rotary viscosity, very fast response speed and well low-temperature stability, be highly suitable for manufacturing active matrix TN-TFT, IPS-TFT liquid crystal display device and liquid-crystal display low voltage drive, response fast.Wherein, the disclosed liquid-crystal composition of embodiment 1～embodiment 6 is particularly suitable for manufacturing IPS-TFT liquid crystal display device and liquid-crystal display, and the disclosed liquid-crystal composition of embodiment 7～embodiment 10 is particularly suitable for manufacturing TN-TFT liquid crystal display device and liquid-crystal display.
Although the present invention has only enumerated particular compound and the proportioning consumption (weight percentage) thereof of above-mentioned 10 embodiment, and carried out performance test, but liquid-crystal composition of the present invention can be on the basis of above-mentioned 10 embodiment, utilize the preferred liquid crystalline cpd of the liquid crystalline cpd of formula I involved in the present invention, II, III, IV, V representative and formula I, II, III, IV, V further expand and revise, by its proportioning consumption is suitably adjusted, all can reach purpose of the present invention.
Claims (10)
1. a positive dielectric anisotropy liquid crystal composition is characterized in that: described liquid-crystal composition comprises component A that weight percentage is 5%～60%, 1%～60% B component, 1%～40% component C and 0%～40% component D; Described component A is comprised of at least one generalformulaⅰcompound and at least one general formula II compound, and described B component is comprised of one or more general formula III compounds; Described component C is comprised of one or more general formula IV compounds; Described component D is comprised of one or more general formula V compounds; In addition, also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum;
In above-mentioned general formula,
R
1, R
2, R
3, R
5be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10;
R
4, R
6it is respectively the H atom, the alkyl that the alkyl that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkoxyl group that the alkoxyl group that carbonatoms is 1～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 1～10, the alkenyl that the alkenyl that carbonatoms is 2～10 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 2～10, wherein arbitrary group of the alkenyloxy that the alkenyloxy that carbonatoms is 3～8 or the carbonatoms that the H atom is replaced by fluorine atom arbitrarily are 3～8,
X
1, X
2, X
3, X
5be respectively-H or-F;
X
4, X
6be respectively 1. following～4. shown in arbitrary group in group:
①-H、-Cl、-F、-CN、-OCN、-OCF
3、-CF
3、-CHF
2、-CH
2F、-OCHF
2、-SCN、-NCS、-SF
5，
2. the alkene oxygen base that the thiazolinyl that the alkoxyl group that the alkyl that carbonatoms is 1～15, carbonatoms are 1～15, carbonatoms are 2～15, carbonatoms are 2～15,
3. one or more-CH
2-quilt-CH=CH-,-C ≡ C-,-COO-,-OOC-,
-O-or-S-substitute and substitute after Sauerstoffatom in group directly be not connected above-mentioned 2. shown in group,
4. arbitrarily the H atom is replaced by fluorine atom or chlorine atom above-mentioned 2., 3. shown in group;
Z
1, Z
2, Z
3, Z
4, Z
5be respectively singly-bound ,-CH
2-,-CH
2cH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-CF
2o-,-OCH
2-,-CH
2o-,-OCF
2-,-CF
2cH
2-,-CH
2cF
2-,-CF
2cF
2-or-CF=CF-wherein any one;
A, b, d, e, g, h, i, j are respectively wherein arbitrary numerical value of 0,1,2 or 3, and c, f are respectively 1 or 2, and a+b+c≤5, d+e+f≤5.
2. a kind of positive dielectric anisotropy liquid crystal composition according to claim 1 is characterized in that: described liquid-crystal composition comprises component A that weight percentage is 28%～39%, 29%～52% B component, 14%～34% component C and 0%～15% component D; The weight percentage sum of said components A, B, C, D is 100%; Also add in addition 0%～0.5% opticity component of described liquid-crystal composition weight sum.
3. a kind of positive dielectric anisotropy liquid crystal composition according to claim 1, it is characterized in that: in described component A, the weight percentage that generalformulaⅰcompound accounts for liquid-crystal composition is 1%～50%.
4. a kind of positive dielectric anisotropy liquid crystal composition according to claim 3, it is characterized in that: in described component A, the weight percentage that generalformulaⅰcompound accounts for liquid-crystal composition is 21%～33%.
5. a kind of positive dielectric anisotropy liquid crystal composition according to claim 1, it is characterized in that: in described component A, the weight percentage that general formula II compound accounts for liquid-crystal composition is 1%～50%.
6. a kind of positive dielectric anisotropy liquid crystal composition according to claim 5, it is characterized in that: in described component A, the weight percentage that general formula II compound accounts for liquid-crystal composition is 6%～10%.
7. according to the described a kind of positive dielectric anisotropy liquid crystal composition of claim 1～6 any one, it is characterized in that:
Generalformulaⅰcompound in described component A is one or more in compound shown in formula I-a～formula I-w:
General formula II compound in described component A is one or more in compound shown in formula II-a～formula II-f:
Be wherein ,-(F)-H or-F;
R
1, R
2be respectively-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5in any one.
8. according to the described a kind of positive dielectric anisotropy liquid crystal composition of claim 1～6 any one, it is characterized in that: the described III of the general formula as B component compound is one or more in compound shown in formula III-a～formula III-i:
Be wherein ,-(F)-H or-F;
R
3, R
4respectively the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8.
9. according to the described a kind of positive dielectric anisotropy liquid crystal composition of claim 1～6 any one, it is characterized in that: the described IV of the general formula as component C compound is one or more in compound shown in formula IV-a～formula IV-l:
Be wherein ,-(F)-H or-F;
R
5the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
4be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
10. according to the described a kind of positive dielectric anisotropy liquid crystal composition of claim 1～6 any one, it is characterized in that: the described V of the general formula as component D compound is one or more in compound shown in formula V-a～formula V-v:
Be wherein ,-(F)-H or-F;
R
6the carbonatoms alkyl that is 1～10, wherein arbitrary group of alkoxyl group that carbonatoms is 1～10, alkenyl that carbonatoms is 2～10, alkenyloxy that carbonatoms is 3～8;
X
6be-H ,-Cl ,-F ,-CN ,-OCN ,-OCF
3,-CF
3,-CHF
2,-CH
2f ,-OCHF
2,-SCN ,-NCS ,-SF
5, any one in alkyl that carbonatoms is 1～10, alkoxyl group that carbonatoms is 1～10, thiazolinyl that carbonatoms is 2～10, alkene oxygen base that carbonatoms is 2～10.
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