CN105295956A - Positive dielectric liquid crystal composition - Google Patents
Positive dielectric liquid crystal composition Download PDFInfo
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- CN105295956A CN105295956A CN201510638037.1A CN201510638037A CN105295956A CN 105295956 A CN105295956 A CN 105295956A CN 201510638037 A CN201510638037 A CN 201510638037A CN 105295956 A CN105295956 A CN 105295956A
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- 0 *C1CCCC1 Chemical compound *C1CCCC1 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N C1CCCCC1 Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- YEJCHVFCLNKZPU-UHFFFAOYSA-N CC1COC(C)CC1 Chemical compound CC1COC(C)CC1 YEJCHVFCLNKZPU-UHFFFAOYSA-N 0.000 description 2
- WJAVYWPXOXAOBS-UHFFFAOYSA-N Cc1cc(F)c(C)cc1 Chemical compound Cc1cc(F)c(C)cc1 WJAVYWPXOXAOBS-UHFFFAOYSA-N 0.000 description 2
- QMOSOTWVRGAQLU-UHFFFAOYSA-N CC(C=CC(C)=C1F)C1=[F] Chemical compound CC(C=CC(C)=C1F)C1=[F] QMOSOTWVRGAQLU-UHFFFAOYSA-N 0.000 description 1
- QRMPKOFEUHIBNM-UHFFFAOYSA-N CC1CCC(C)CC1 Chemical compound CC1CCC(C)CC1 QRMPKOFEUHIBNM-UHFFFAOYSA-N 0.000 description 1
- RPMUDXVQHUECRE-UHFFFAOYSA-N CC1COC(C)OC1 Chemical compound CC1COC(C)OC1 RPMUDXVQHUECRE-UHFFFAOYSA-N 0.000 description 1
- JRLPEMVDPFPYPJ-UHFFFAOYSA-N CCc1ccc(C)cc1 Chemical compound CCc1ccc(C)cc1 JRLPEMVDPFPYPJ-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 liquid crystal composition. The positive dielectric liquid crystal composition comprises a component A which consists of one or more liquid crystal compounds shown in a general formula I, and an additive component D which consists of one or more compounds shown in a general formula S-1, a structural formula S-2, a structural formula S-3 and a general formula S-4. The positive dielectric liquid crystal composition does not change under the conditions of high temperature and ultraviolet radiation, so that the liquid crystal quality is improved; the positive dielectric liquid crystal composition is applicable to an active matrix electric optical element and a liquid crystal display, and can be applied to civil use and practical TFT-LCDs (Thin-Film Transistor Liquid Crystal Displays) under special severe conditions.
Description
Technical field
The present invention relates to liquid crystal material field, especially a kind of positive liquid crystal composition.
Background technology
Liquid crystal display device is divided into following modes according to display mode: twisted nematic (TN) pattern, super-twist nematic (STN) pattern, plane modes (IPS), vertical orientation (VA) pattern.No matter which kind of display format all needs liquid-crystal composition to have following characteristic.
(1) chemistry, physical properties is stablized.
(2) viscosity is low.
(3) there is suitable △ ε.
(4) suitable index of refraction △ n.
(5) good with the intermiscibility of other liquid crystalline cpds
Along with the maturation of the early 1990s TFT technology, color liquid crystal flat-panel indicating meter develops rapidly, and less than the time of 10 years, TFT-LCD shot up as main flow indicating meter, and the advantage that this and it have is undivided.Its advantage is mainly divided into 5 points:
One, service performance is good.Low pressure applications, low driving voltage; Panelized, frivolous again, save a large amount of starting material and usage space; Reduce power consumption; Display quality 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.
Two environmental protection characteristics are good.TFT-LCD is radiationless, flicker free, harmless to the health of user, particularly the appearance of TFT-LCD electronic book, the mankind will be brought into paperless office, and without the paper printing epoch, cause mankind's study, propagates and remember the revolution of planting civilized mode.
Three scope of applications are wide: can normally use in the temperature ranges of-20 DEG C to 50 DEG C, and the TFT-LCD low-temperature working temperature through excess temperature consolidation process can reach subzero 80 DEG C.Both can be used as mobile terminal display, terminal console shows, and can make large-curtain projecting TV set again, be the full-size video display terminal of excellent property.
The level of automation of four manufacturing technologies is high.
Five TFT-LCD are easy to integrated and update.
The principal feature of liquid crystal flat panel display from the above mentioned, therefore liquid crystal material quality characteristic used to liquid crystal flat panel display it is also proposed higher requirement, and liquid-crystal composition itself should have high electric charge conservation rate, high resistivity, low ion concns, reduce power consumption, low rotary viscosity.
As liquid crystal material, need to have good chemistry and thermostability and the stability to electric field and electromagnetic radiation.And as thin-film transistor technologies (TFT-LCD) liquid crystal material, not only need to have as outside upward stability, also should have the performances such as wider nematic temperature range, suitable degree of birefringence anisotropy, very high resistivity, good anti-ultraviolet property, high electric charge conservation rate and low-steam pressure.
For thin-film transistor technologies (TFT-LCD) Application Areas, although market is very huge in recent years, technology is also ripe gradually, simultaneously, due to the continuous progress of liquid crystal material technology, people also in continuous raising, especially in realization response fast, reduce driving voltage to reduce the aspects such as power consumption to the requirement of technique of display.
Liquid crystal material as one of important photoelectron material of liquid-crystal display, the effect important to the performance improving liquid-crystal display.Any display liquid-crystal composition all requires wider liquid crystal state temperature, higher stability, than better suited viscosity, has response speed faster to electric field.But also use in a liquid crystal display separately without any single liquid crystal material so far, and the composition need not developing other performance just can meet performance requriements.Therefore, the liquid crystal material continually developing new excellent performance has great importance to liquid-crystal display development.Liquid crystal in use, constantly can be subject to optical radiation and thermal-radiating impact, it is also inevitably subject to light and hot contact in making processes simultaneously, this not under contact can cause the change of liquid crystal molecule in impurity, thus have influence on the change of liquid crystal anchoring ability, and then affect the display effect of panel, though advancing by leaps and bounds of panel technology, OLED has outstanding advantage in this respect compared with LCD, the present invention is directed to liquid crystal to manufacture and use procedure is subject to the impact of light and heat, propose corresponding solution, show through experiment, by improving, its reliability degree significantly promotes, the detrimentally affect that liquid crystal material is subject to when contacting different-waveband and high temperature can be avoided
Summary of the invention
The technical issues that need to address of the present invention are to provide a kind of positive dielectricity liquid-crystal composition, when being subject to high temperature and ultraviolet radiation, itself does not change, thus promote liquid crystal quality, be applicable in active matrix electrooptic element and liquid-crystal display, TFT-LCD practical under available civilian and special mal-condition.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is:
A kind of positive dielectricity liquid-crystal composition, described liquid-crystal composition comprises the component A of the liquid crystalline cpd composition shown in one or more general formula Is, comprise the B component of the liquid crystalline cpd composition shown in one or more general formula Is I, comprise the component C of the liquid crystalline cpd composition shown in one or more general formula III, also comprise the binder component D of one or more general formulas S-1, structural formula S-2, structural formula S-3, the compound composition shown in general formula S-4
Wherein,
Cyclealkyl is selected from cyclopentyl, cyclobutyl, any one in cyclopropyl,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
R
2, R
3, R
5, R
6be selected from H respectively, unbranched alkoxy that straight chained alkyl that carbonatoms is 1 ~ 10, carbonatoms are 1 ~ 10, carbon atom be 2 ~ 10 straight-chain alkenyl or carbon atom be 3 ~ 8 straight alkenyloxies, any H wherein can be replaced by F;
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10;
X
1, X
2, X
3, X
4be selected from H, F respectively any one;
Y
1be selected from F, carbonatoms be 1 ~ 6 straight chained alkyl, unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 6, H is not wherein for be substituted or monosubstituted or polysubstituted by F by F;
Z
1, Z
2be selected from singly-bound ,-CH respectively
2-,-CH
2-CH
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-,-C
2f
4-or-CF=CF-in any one;
Z
3be selected from singly-bound ,-CH
2-,-CH
2-CH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-OCH
2-,-CH
2o-,-CF
2cH
2-,-CH
2cF
2-,-C
2f
4-or-CF=CF-in any one;
be selected from respectively singly-bound,
any one in group;
be selected from following (a), any one in group shown in (b),
(a) trans Isosorbide-5-Nitrae-cyclohexylidene, Isosorbide-5-Nitrae-cyclohexenyl group, wherein one or more non-conterminous-CH
2-group is replaced by-O-or-S-or is not replaced;
(b) Isosorbide-5-Nitrae-phenylene group, wherein one or two-CH-is replaced by N or is not replaced, and one or two H is replaced by F or do not replace;
A, b, d represent respectively 0,1,2,3, c represent 1 or 2, e represent 0,1,2, and a+b+c≤5.
The further improvement of technical solution of the present invention is: in described liquid-crystal composition, the weight percentage of component A is 1 ~ 50%, the weight percentage of B component is 1 ~ 70%, the weight percentage of component C is 0 ~ 40%, component A, two percentage composition sums are 100% in B component, component C.
Preferably, in described liquid-crystal composition, the weight percentage of component A is 5 ~ 50%, the weight percentage of B component be 10 ~ 70%, component C weight percentage be 5 ~ 40%, component A, two percentage composition sums are 100% in B component, component C.
Further preferably, in described liquid-crystal composition, the weight percentage of component A is 15 ~ 45%, and the weight percentage of B component is 20 ~ 60%, the weight percentage of component C is 15 ~ 35%, component A, the middle percentage composition sum of B component, component C is 100%.
The further improvement of technical solution of the present invention is: in described liquid-crystal composition, the content of binder component D is 1 ~ 3000ppm.
Preferably, in described liquid-crystal composition, the content of binder component D is 1 ~ 1000ppm.
Further preferably, in described liquid-crystal composition, the content of component D is 1 ~ 500ppm.
Most preferably be 1 ~ 200ppm.
The further improvement of technical solution of the present invention is: also add the opticity component that weight percentage is 0.0 ~ 0.5% in described liquid-crystal composition.
The further improvement of technical solution of the present invention is: the compound shown in described general formula I is specially the compound shown in following formula I-1 ~ formula I-3,
Wherein,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
X
1, X
2be selected from H, F respectively any one;
Z
1, Z
2be selected from singly-bound ,-CH respectively
2-,-CH
2-CH
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-,-C
2f
4-or-CF=CF-in any one;
be selected from respectively singly-bound,
any one in group;
A, b represent that 0,1,2,3, c represent 1 or 2 respectively, and a+b+c≤5.
The further improvement of technical solution of the present invention is: the compound shown in described general formula I is specially the compound shown in following formula I-1-a ~ formula I-3-t,
Wherein,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
(F) represent in H or F any one;
(O) O or-CH is represented
2-in any one.
Preferably, the compound shown in described general formula I is specially the compound shown in following formula I-1-a-1 ~ formula I-3-t-6,
The further improvement of technical solution of the present invention is: the compound shown in described general formula II is specially the compound shown in following formula II-a ~ formula II-i,
Wherein,
R
2, R
3be selected from H respectively, unbranched alkoxy that straight chained alkyl that carbonatoms is 1 ~ 10, carbonatoms are 1 ~ 10, carbon atom be 2 ~ 10 straight-chain alkenyl or carbon atom be 3 ~ 8 straight alkenyloxies, any H wherein can be replaced by F;
(F) represent in H or F any one.
Preferably, the compound shown in described general formula II is specially the compound shown in following formula II-a-1 ~ formula II-i-3,
The further improvement of technical solution of the present invention is: the compound shown in described general formula III is specially the compound shown in following formula III-a ~ formula III-u,
Wherein,
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10;
Y
1be selected from F, carbonatoms be 1 ~ 6 straight chained alkyl, unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 6, H is not wherein for be substituted or monosubstituted or polysubstituted by F by F;
(F) represent in H or F any one.
Preferably, the compound shown in described general formula III is specially the compound shown in following formula III-a-1 ~ formula III-m-1,
Wherein,
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10.
The invention also discloses the positive dielectricity liquid-crystal composition of above-mentioned one to be applied in liquid crystal display device and liquid-crystal display.
Owing to have employed technique scheme, the technical progress that the present invention obtains is:
The positive dielectricity liquid-crystal composition of one of the present invention, there is high electric charge conservation rate, reduce power consumption, low rotary viscosity, time of response fast feature, be applicable to active matrix electrooptic element and liquid-crystal display, and especially switch the indicating meter that (IPS) or fringing field switch (FFS) type in twisted-nematic (TN), face.
Positive dielectricity liquid-crystal composition excellent performance provided by the invention, can meet high reliability requirement, have antioxidative stabilizer, uvioresistant stability and anti-high and low-temp stability.Also there is low-down overall response time, there is lower voltage, high resistivity and voltage retention.By the adjustment to each component concentration, Nematic phase liquid crystal composition of the present invention can have different threshold voltages and birefringent characteristic, can make each individual system that client is usually used, uses under being convenient to thick at different liquid crystal cell in different driving voltage.And liquid crystal compound still can show high resistivity after high temperature, this liquid crystal compound shows the excellent high temperature with excellence and UV stable performance.Meanwhile, in the present invention, liquid crystal compound also shows low viscosity, fast-response time, suitable optical anisotropy and suitable dielectric anisotropy, therefore can have the Electro-Optical Display of active array addressing.
Positive dielectricity liquid-crystal composition of the present invention; may be used for Active Matrix Display; preferably by the matrix addressing of thin film transistor (TFT); be specially adapted to the active matrix TN-TFT manufacturing response fast; IPS-TFT liquid crystal display device and liquid-crystal display, also belong to protection scope of the present invention.
Embodiment
The invention discloses a kind of positive dielectricity liquid-crystal composition, it is characterized in that: described liquid-crystal composition comprises the component A of the liquid crystalline cpd composition shown in one or more general formula Is, comprise the B component of the liquid crystalline cpd composition shown in one or more general formula Is I, comprise the component C of the liquid crystalline cpd composition shown in one or more general formula III, also comprise the binder component D of one or more general formulas S-1, structural formula S-2, structural formula S-3, the compound composition shown in general formula S-4
Wherein,
Cyclealkyl is selected from cyclopentyl, cyclobutyl, any one in cyclopropyl,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
R
2, R
3, R
5, R
6be selected from H respectively, unbranched alkoxy that straight chained alkyl that carbonatoms is 1 ~ 10, carbonatoms are 1 ~ 10, carbon atom be 2 ~ 10 straight-chain alkenyl or carbon atom be 3 ~ 8 straight alkenyloxies, any H wherein can be replaced by F;
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10;
X
1, X
2, X
3, X
4be selected from H, F respectively any one;
Y
1be selected from F, carbonatoms be 1 ~ 6 straight chained alkyl, unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 6, H is not wherein for be substituted or monosubstituted or polysubstituted by F by F;
Z
1, Z
2be selected from singly-bound ,-CH respectively
2-,-CH
2-CH
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-,-C
2f
4-or-CF=CF-in any one;
Z
3be selected from singly-bound ,-CH
2-,-CH
2-CH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-OCH
2-,-CH
2o-,-CF
2cH
2-,-CH
2cF
2-,-C
2f
4-or-CF=CF-in any one;
be selected from respectively singly-bound,
any one in group;
be selected from following (a), any one in group shown in (b),
(a) trans Isosorbide-5-Nitrae-cyclohexylidene, Isosorbide-5-Nitrae-cyclohexenyl group, wherein one or more non-conterminous-CH
2-group is replaced by-O-or-S-or is not replaced;
(b) Isosorbide-5-Nitrae-phenylene group, wherein one or two-CH-is replaced by N or is not replaced, and one or two H is replaced by F or do not replace;
A, b, d represent respectively 0,1,2,3, c represent 1 or 2, e represent 0,1,2, and a+b+c≤5.The invention also discloses in liquid-crystal composition, the weight percentage of component A is 1 ~ 50%, the weight percentage of B component be 1 ~ 70%, component C weight percentage be 0 ~ 40%, component A, two percentage composition sums are 100% in B component, component C.
The invention also discloses in liquid-crystal composition, the content of component D is 1 ~ 3000ppm.
The invention also discloses in liquid-crystal composition, also add the opticity component that weight percentage is 0.0 ~ 0.5%.
Liquid-crystal composition of the present invention can adopt ordinary method the mixing of two or more liquid crystalline cpds to be produced, as at high temperature mixed different components and method soluble in one another preparation, wherein, liquid-crystal composition to be dissolved in the solvent for this compound and to mix, then under reduced pressure distilling out this solvent; Or liquid-crystal composition of the present invention can preparation method conveniently be prepared.
In the present invention the concrete meaning of symbol and test condition as follows:
%: weight percentage;
DEG C: temperature unit, degree Celsius;
Cp: the clearing point (DEG C) representing liquid crystal.
S-N: represent that the crystalline state of liquid crystal is to nematic fusing point (DEG C).
△ n: be optical anisotropy, no is the specific refractory power of ordinary light, and ne is the specific refractory power of extraordinary ray, and test condition is, 589nm, 25 DEG C.
△ ε: be 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 is 25 DEG C; 1KHz; HP4284A; 5.2 the left-handed box of micron TN.
τ: time of response [ms], testing tool be DMS-501, test condition is 25 ± 0.5 DEG C, testing cassete 5.2 microns of left-handed boxes of TN.
V
10for the optical threshold voltage [v] of liquid crystal, V
90for the saturation voltage value [v] of liquid crystal, test condition is 5.2 microns of left-handed boxes of TN, 25 DEG C.
γ
1: rotary viscosity [mPas], test condition is 25 ± 0.5 DEG C.
Below in conjunction with specific embodiment, the present invention is further elaborated, but the following examples are example of the present invention, and the present invention is not limited to following examples.When not departing from purport of the present invention or scope, by can also by adjustment to each component concentration in liquid-crystal composition of the present invention, revise or improve out and there is different threshold value, clearing point, the liquid crystal compound of birefringent characteristic, this it will be apparent to those skilled in the art that.Described method is ordinary method if no special instructions.Described material all can obtain from open commercial sources if no special instructions.
Each composition adopted below in an example, all can be synthesized by known method, or be obtained by commercial sources.These synthetic technologys are conventional, and each liquid crystalline cpd obtained meets electrical type compound standard after tested.
According to the proportioning of each liquid-crystal composition of following examples regulation, prepare liquid-crystal composition.The preparation of described liquid-crystal composition carries out according to the ordinary method of this area, and as taked heating, ultrasonic wave, ratio mixing is obtained according to the rules for the modes such as suspension.
Get the liquid crystalline cpd configuration liquid-crystal composition of following weight percentage, prepare and study the liquid-crystal composition provided in the following example.Show composition and its performance parameter test result of each liquid-crystal composition below.
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Embodiment 6
Embodiment 7
Embodiment 8
Embodiment 9
Embodiment 10
Comparative example 1 (D1)
Comparative example 2 (D2)
Comparative example 3 (D3)
Comparative example 4 (D4)
The fundamental performance parameter test result of embodiment 1-10 and comparative example 1-4
The trust performance parameter test result of embodiment 1-2 and comparative example 1-4
The trust performance parameter test result of embodiment 3-10
As can be seen from embodiment 1 ~ 10, the mixture of this patent indication compares that to have low temperature reliability with comparative example 1 ~ 4 good, and time of response and contrast gradient significantly promote, and the advantage simultaneous contrast that rotary viscosity obviously reduces and dark-state brightness significantly improve.Particularly resistance to light and heat energy power significantly promotes.
From embodiment 1 ~ 10, this Nematic phase liquid crystal composition can maintain the fast time of response at low-temperature region, the use temperature of TN, IPS liquid crystal mode can be widened, and there is time of response and wider angular field of view faster, and have outstanding advantage in contrast gradient and reliability
Although the present invention only lists concrete material and the proportioning mass percent of above-mentioned 10 embodiments, and the performance of the liquid-crystal composition of composition is tested, but liquid-crystal composition of the present invention can on the basis of above-described embodiment, utilize general formula I involved in the present invention, II, III, IV, representative compound and general formula I, II, III, IV preferred compound expand further and revise, all can reach object of the present invention.
Claims (9)
1. a positive dielectricity liquid-crystal composition, it is characterized in that: described liquid-crystal composition comprises the component A of the liquid crystalline cpd composition shown in one or more general formula Is, comprise the B component of the liquid crystalline cpd composition shown in one or more general formula Is I, comprise the component C of the liquid crystalline cpd composition shown in one or more general formula III, also comprise the binder component D of one or more general formulas S-1, structural formula S-2, structural formula S-3, the compound composition shown in general formula S-4
Wherein,
Cyclealkyl is selected from cyclopentyl, cyclobutyl, any one in cyclopropyl,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
R
2, R
3, R
5, R
6be selected from H respectively, unbranched alkoxy that straight chained alkyl that carbonatoms is 1 ~ 10, carbonatoms are 1 ~ 10, carbon atom be 2 ~ 10 straight-chain alkenyl or carbon atom be 3 ~ 8 straight alkenyloxies, any H wherein can be replaced by F;
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10;
X
1, X
2, X
3, X
4be selected from H, F respectively any one;
Y
1be selected from F, carbonatoms be 1 ~ 6 straight chained alkyl, unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 6, H is not wherein for be substituted or monosubstituted or polysubstituted by F by F;
Z
1, Z
2be selected from singly-bound ,-CH respectively
2-,-CH
2-CH
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-,-C
2f
4-or-CF=CF-in any one;
Z
3be selected from singly-bound ,-CH
2-,-CH
2-CH
2-,-(CH
2)
3-,-(CH
2)
4-,-CH=CH-,-C ≡ C-,-COO-,-OOC-,-OCH
2-,-CH
2o-,-CF
2cH
2-,-CH
2cF
2-,-C
2f
4-or-CF=CF-in any one;
be selected from respectively singly-bound,
any one in group;
be selected from following (a), any one in group shown in (b),
(a) trans Isosorbide-5-Nitrae-cyclohexylidene, Isosorbide-5-Nitrae-cyclohexenyl group, wherein one or more non-conterminous-CH
2-group is replaced by-O-or-S-or is not replaced;
(b) Isosorbide-5-Nitrae-phenylene group, wherein one or two-CH-is replaced by N or is not replaced, and one or two H is replaced by F or do not replace;
A, b, d represent respectively 0,1,2,3, c represent 1 or 2, e represent 0,1,2, and a+b+c≤5.
2. the positive dielectricity liquid-crystal composition of one according to claim 1, it is characterized in that: in described liquid-crystal composition, the weight percentage of component A is 1 ~ 50%, the weight percentage of B component is 1 ~ 70%, the weight percentage of component C is 0 ~ 40%, component A, two percentage composition sums are 100% in B component, component C.
3. the positive dielectricity liquid-crystal composition of one according to claim 2, is characterized in that: in described liquid-crystal composition, the content of binder component D is 1 ~ 3000ppm.
4. a kind of positive liquid crystal composition according to claim 1, is characterized in that: also add the opticity component that weight percentage is 0.0 ~ 0.5% in described liquid-crystal composition.
5. the positive dielectricity liquid-crystal composition of the one according to any one of Claims 1 to 4, is characterized in that: the compound shown in described general formula I is specially the compound shown in following formula I-1 ~ formula I-3,
Wherein,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
X
1, X
2be selected from H, F respectively any one;
Z
1, Z
2be selected from singly-bound ,-CH respectively
2-,-CH
2-CH
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-,-C
2f
4-or-CF=CF-in any one;
be selected from respectively singly-bound,
any one in group;
A, b represent that 0,1,2,3, c represent 1 or 2 respectively, and a+b+c≤5.
6. the positive dielectricity liquid-crystal composition of one according to claim 5, is characterized in that: the compound shown in described general formula I is specially the compound shown in following formula I-1-a ~ formula I-3-t,
Wherein,
R
1be selected from following 1., 2., 3., 4. shown in any one in group,
①H、Cl、F、CN、OCN、OCF
3、CF
3、CHF
2、CH
2F、OCHF
2、SCN、NCS、SF
5，
2. carbonatoms to be straight chained alkyl, the carbonatoms of 1 ~ 15 be 1 ~ 15 unbranched alkoxy, carbonatoms be 2 ~ 15 straight-chain alkenyl or carbonatoms be 2 ~ 15 straight alkenyloxy,
3. above-mentioned 2. in one or more-CH
2-can be substituted by-CH=CH-,-C ≡ C-,-COO-,-OOC-, tetramethylene, pentamethylene ,-O-or-S-independently of one another and the form be not directly connected with Sauerstoffatom after substituting the group that formed,
4. above-mentioned 2. in one or more H independently of one another by F, Cl replace at least one in the group that formed;
(F) represent in H or F any one;
(O) O or-CH is represented
2-in any one.
7. the positive dielectricity liquid-crystal composition of the one according to any one of Claims 1 to 4, is characterized in that: the compound shown in described general formula II is specially the compound shown in following formula II-a ~ formula II-i,
Wherein,
R
2, R
3be selected from H respectively, unbranched alkoxy that straight chained alkyl that carbonatoms is 1 ~ 10, carbonatoms are 1 ~ 10, carbon atom be 2 ~ 10 straight-chain alkenyl or carbon atom be 3 ~ 8 straight alkenyloxies, any H wherein can be replaced by F;
(F) represent in H or F any one.
8. the positive dielectricity liquid-crystal composition of the one according to any one of Claims 1 to 4, is characterized in that: the compound shown in described general formula III is specially the compound shown in following formula III-a ~ formula III-u,
Wherein,
R
4be selected from
carbonatoms be 1 ~ 10 straight chained alkyl, carbonatoms be 1 ~ 10 unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 10;
Y
1be selected from F, carbonatoms be 1 ~ 6 straight chained alkyl, unbranched alkoxy or carbonatoms be any one in the straight-chain alkenyl of 2 ~ 6, H is not wherein for be substituted or monosubstituted or polysubstituted by F by F;
(F) represent in H or F any one.
9. the positive dielectricity liquid-crystal composition of the one according to any one of Claims 1 to 4, is applied in liquid crystal display device and liquid-crystal display.
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| CN107557021A (en) * | 2016-06-30 | 2018-01-09 | 石家庄诚志永华显示材料有限公司 | Liquid-crystal composition |
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