CN103409146A - Liquid crystal composition for active matrix driven liquid crystal display - Google Patents
Liquid crystal composition for active matrix driven liquid crystal display Download PDFInfo
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- CN103409146A CN103409146A CN2013101141750A CN201310114175A CN103409146A CN 103409146 A CN103409146 A CN 103409146A CN 2013101141750 A CN2013101141750 A CN 2013101141750A CN 201310114175 A CN201310114175 A CN 201310114175A CN 103409146 A CN103409146 A CN 103409146A
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- PFQHIIUEZRFBOS-UHFFFAOYSA-N CCCC(C)C(CC1)CCC1C(CC1)CCC1C=C Chemical compound CCCC(C)C(CC1)CCC1C(CC1)CCC1C=C PFQHIIUEZRFBOS-UHFFFAOYSA-N 0.000 description 2
- FKANBXSYYXIXLF-UHFFFAOYSA-N CCCC(C)c(cc1)ccc1-c(cc1)cc(F)c1-c1ccc(C(CC)CC)cc1 Chemical compound CCCC(C)c(cc1)ccc1-c(cc1)cc(F)c1-c1ccc(C(CC)CC)cc1 FKANBXSYYXIXLF-UHFFFAOYSA-N 0.000 description 1
- NVDUXJTXGZEGMR-UHFFFAOYSA-N Cc(cc1)ccc1-c(cc1)cc(F)c1-c(cc1)cc(F)c1F Chemical compound Cc(cc1)ccc1-c(cc1)cc(F)c1-c(cc1)cc(F)c1F NVDUXJTXGZEGMR-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a liquid crystal composition for active matrix driven liquid crystal display. The composition contains compounds shown in formulas I-III. According to the invention, a liquid crystal composition taking a difluoromethoxy-bridge simultaneously containing cyclopentyl in molecules thereof as a connecting group is used for improving the comprehensive performance of liquid crystal compositions so as to obtain different optimal combinations for meeting the needs of different display modes, therefore, the liquid crystal composition has an important practical value.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition for the driven with active matrix liquid-crystal display.
Background technology
Utilize the different characteristic of liquid crystal material and mode of operation, liquid crystal display device can be designed to various operating mode.As twisted nematic mode, supertwist nematic-mode, supertwist birefringent mode, electrically controlled birefringence mode, in-plane-switching-mode etc.
In high information quantity shows, generally adopt active matrix (AM) mode to drive, more employing thin film transistor (TFT) drives at present.
In the AM-TFT element, the TFT switch device is by the matrix-style addressing, and in the non-conduction time, voltage changes, and the transmittance of pixel will change, and causes display quality to reduce.In order to overcome this phenomenon, require liquid crystal material that higher voltage retention is arranged, guarantee that the transmittance of pixel does not change.
Different operating mode and different type of drive require liquid-crystal composition suitable optical birefringence value Δ n to be arranged so that Δ nd reaches design load; Low threshold voltage is to realize low voltage drive; Lower viscosity is to meet the needs of quick response.
When modulation is applicable to the liquid-crystal composition of different LCD, need material to have suitable optical birefringence value, high dielectric anisotropy value, low fusing point and high clearing point, high voltage retention, low rotary viscosity, good thermostability and ultraviolet stability etc.
Do not have a kind of monomer liquid crystal compound can meet simultaneously the requirement of the various different working modes of liquid-crystal display.Suitably select monomer liquid crystal, and mix by a certain percentage, to meet the requirement of demonstration.
Summary of the invention
The purpose of this invention is to provide a kind of liquid-crystal composition for the driven with active matrix liquid-crystal display.
Liquid-crystal composition provided by the invention, comprise following formula I to compound shown in formula III;
Formula I
Formula II
Formula III
Described formula I to formula III, R
1And R
2All be selected from independently of one another at least a in the alkenyl of the alkoxyl group of alkyl, C1-C7 of hydrogen, fluorine, cyano group, trifluoromethyl, trifluoromethoxy, C1-C7 and C2-C5;
Wherein, the alkyl of described C1-C7 specifically is selected from least a in the alkyl of the alkyl of alkyl, C1-C2 of alkyl, the C1-C3 of alkyl, the C3-C4 of alkyl, the C2-C4 of alkyl, the C1-C4 of alkyl, the C4-C5 of alkyl, the C3-C5 of alkyl, the C2-C5 of alkyl, the C1-C5 of alkyl, the C5-C6 of alkyl, the C4-C6 of alkyl, the C3-C6 of alkyl, the C2-C6 of alkyl, the C1-C6 of alkyl, the C6-C7 of alkyl, the C5-C7 of alkyl, the C4-C7 of alkyl, the C3-C7 of C2-C7 and C2-C3;
The alkenyl of C2-C5 specifically is selected from least a in the alkenyl of the alkenyl of alkenyl, C4-C5 of alkenyl, the C3-C5 of alkenyl, the C3-C4 of C2-C4 and C2-C3;
The alkoxyl group of C1-C7 specifically is selected from the alkoxyl group of C2-C7, the alkoxyl group of C3-C7, the alkoxyl group of C4-C7, the alkoxyl group of C5-C7, the alkoxyl group of C6-C7, the alkoxyl group of C1-C6, the alkoxyl group of C2-C6, the alkoxyl group of C3-C6, the alkoxyl group of C4-C6, the alkoxyl group of C5-C6, the alkoxyl group of C1-C5, the alkoxyl group of C2-C5, the alkoxyl group of C3-C5, the alkoxyl group of C4-C5, the alkoxyl group of C1-C4, the alkoxyl group of C2-C4, the alkoxyl group of C3-C4, the alkoxyl group of C1-C3, at least a in the alkoxyl group of C1-C2 and the alkoxyl group of C2-C3,
L
1And L
2All be selected from least a in hydrogen and fluorine;
Z
1Be selected from-COO-,-CH
2CH
2-,-CH
2O-,-CF
2O-,-at least a in C ≡ C-and singly-bound;
N
1Be 0 or 1 or 2 or 3.
Above-mentioned liquid-crystal composition also can only be comprised of said components.
Shown in described formula I, the mass parts of compound is 6～65 parts, and the mass parts of compound shown in formula II is 5～55 parts, and the mass parts of compound shown in formula III is 1～60 part.
Concrete, the mass parts of compound shown in formula I is 20,22,38,49,48.5,49,53,58,20-58,20-53,20-48.5,20-38,20-22,22-58,22-53,22-48.5,22-38,38-58,38-53,38-48.5,48.5-58,48.5-53,48-58,49-58 or 53-58 part;
The mass parts of compound shown in formula II is specially 7,16,18,21,21.5,27,30,44,7-44,7-30,7-27,7-21,7-16,16-44,16-30,16-27,16-21,21-44,21-30,21-27,18-44,21.5-44,27-44,27-30 or 30-44 part;
The mass parts of compound shown in formula III is specially 13,18,21,25,27,29.5,34,46,50,13-50,13-46,13-27,13-21,13-18,18-50,18-46,18-27,18-21,21-50,21-46,21-27,27-50,27-46,13-34,25-50,25-46,13-25,29.5-50 or 46-50 part;
Described liquid-crystal composition also comprises shown in formula IV and formula V at least a in compound;
Formula IV
Formula V
In described formula IV and formula V, R
3And R
4All be selected from least a in the alkenyl of the alkoxyl group of alkyl, C1-C7 of hydrogen, fluorine, cyano group, trifluoromethyl, trifluoromethoxy, C1-C7 and C2-C5;
Wherein, the alkyl of described C1-C7 specifically is selected from least a in the alkyl of the alkyl of alkyl, C1-C2 of alkyl, the C1-C3 of alkyl, the C3-C4 of alkyl, the C2-C4 of alkyl, the C1-C4 of alkyl, the C4-C5 of alkyl, the C3-C5 of alkyl, the C2-C5 of alkyl, the C1-C5 of alkyl, the C5-C6 of alkyl, the C4-C6 of alkyl, the C3-C6 of alkyl, the C2-C6 of alkyl, the C1-C6 of alkyl, the C6-C7 of alkyl, the C5-C7 of alkyl, the C4-C7 of alkyl, the C3-C7 of C2-C7 and C2-C3;
The alkoxyl group of C1-C7 specifically is selected from the alkoxyl group of C2-C7, the alkoxyl group of C3-C7, the alkoxyl group of C4-C7, the alkoxyl group of C5-C7, the alkoxyl group of C6-C7, the alkoxyl group of C1-C6, the alkoxyl group of C2-C6, the alkoxyl group of C3-C6, the alkoxyl group of C4-C6, the alkoxyl group of C5-C6, the alkoxyl group of C1-C5, the alkoxyl group of C2-C5, the alkoxyl group of C3-C5, the alkoxyl group of C4-C5, the alkoxyl group of C1-C4, the alkoxyl group of C2-C4, the alkoxyl group of C3-C4, the alkoxyl group of C1-C3, at least a in the alkoxyl group of C1-C2 and the alkoxyl group of C2-C3,
The alkenyl of C2-C5 specifically is selected from least a in the alkenyl of the alkenyl of alkenyl, C4-C5 of alkenyl, the C3-C5 of alkenyl, the C3-C4 of C2-C4 and C2-C3;
Y is selected from least a in the thiazolinyl of the alkyl of cyano group, fluorine, trifluoromethyl, trifluoromethoxy, C1-C5 and C2-C5;
Wherein, the alkyl of described C1-C5 specifically is selected from least a in the alkyl of the alkyl of alkyl, C1-C2 of alkyl, the C1-C3 of alkyl, the C3-C4 of alkyl, the C2-C4 of alkyl, the C1-C4 of alkyl, the C4-C5 of alkyl, the C3-C5 of C2-C5 and C2-C3;
The thiazolinyl of C2-C5 specifically is selected from least a in the thiazolinyl of the thiazolinyl of thiazolinyl, C4-C5 of thiazolinyl, the C3-C5 of thiazolinyl, the C3-C4 of C2-C4 and C2-C3;
L
3And L
4All be selected from least a in H and F;
Z
2Be selected from-COO-,-CH
2CH
2-,-CH
2O-,-at least a in C ≡ C-and singly-bound;
N
2Be 0 or 1 or 2.
Described liquid-crystal composition also can be only by least a composition the in compound shown in compound and formula IV and formula V shown in described formula I-formula III.
Shown in described formula IV and formula V, the mass parts of compound is 0～40 part, and the mass parts of formula IV and formula V compound is 0 when different; Preferably, shown in formula IV and formula V, the mass parts of compound is 0～30 part, is specially 3,3.5,4,5,6,8,9,3-9,3-8,3-6,3-5,5-6,5-9,5-8,3-4,3-3.5,4-9,4-8,4-6,6-9,6-8 or 8-9 part;
Compound shown in described formula I is compound shown in formula Ia:
Formula Ia
In described formula Ia, R
2Identical with definition in aforementioned formula I; R
2Specifically be selected from least a in the alkenyl of the alkyl of C1-C5 and C2-C5;
Shown in described formula Ia, compound is specially
In described formula II, R
1Be selected from least a in the alkyl of C1-C5;
R
2Be selected from least a in the alkenyl of the alkyl of fluorine, C1-C5 and C2-C5;
Shown in described formula IIa, compound is specially
Compound shown in described formula III be compound shown in formula III a, formula III b, formula III c or
Formula III a
In described formula III a, R
1Identical with definition in aforementioned formula III; R
1Specifically be selected from least a in the alkyl of C3 and hydrogen;
Shown in described formula III a, compound is specially
IIIb
In described formula III b, R
1Identical with definition in aforementioned formula III; R
1Specifically be selected from least a in the alkenyl of the alkyl of C1-C5 and C2-C4;
L
1And L
2Identical with definition in aforementioned formula III, L
1And L
2Concrete all be selected from least a in hydrogen and fluorine;
R
2Identical with definition in aforementioned formula III, R
2Specifically be selected from least a in the alkenyl of the alkyl of fluorine, C1-C5 and C2-C5;
Shown in described formula III b, compound is specially
Formula III c
In described formula III c, R
1Identical with definition in aforementioned formula III; R
1Specifically be selected from least a in the alkyl of C1-C5, more specifically be selected from least a in the alkyl of C2-C4;
Shown in described formula III c, compound is specially
Compound shown in described formula IV is compound shown in formula IVa:
Formula IVa
In described formula IVa, R
3Identical with definition in aforementioned formula IV; R
3Specifically be selected from least a in the alkyl of C1-C5;
Y is identical with definition in aforementioned formula IV; Y specifically be selected from fluorine and-OCF
3In at least a;
Shown in described formula IVa, compound is specially
Shown in described formula V, compound is specially
Concrete, described liquid-crystal composition is to comprise or any one in composition I-IX that each compound of following mass parts forms;
In described composition I, the structural formula of each compound and mass parts are as follows:
In described composition I I, the structural formula of each compound and mass parts are as follows:
In described composition I II, the structural formula of each compound and mass parts are as follows:
In described composition I V, the structural formula of each compound and mass parts are as follows:
In described composition V, structural formula and the mass parts of each compound are as follows:
In described composition VI, structural formula and the mass parts of each compound are as follows:
In described composition VII, structural formula and the mass parts of each compound are as follows:
In described composition VIII, structural formula and the mass parts of each compound are as follows:
In described composition I X, the structural formula of each compound and mass parts are as follows:
The optical anisotropy Δ n of described liquid-crystal composition is 0.08-0.13; Clearing point CP is 69 ℃-110 ℃.
In addition, contain liquid crystal display device and the application of this liquid-crystal composition in the liquid crystal display device of preparation driven with active matrix of the driven with active matrix of the liquid-crystal composition that the invention described above provides, also belong to protection scope of the present invention.
Concrete, the liquid crystal display device of described driven with active matrix is indicating meter; The display format of described indicating meter is specially twisted nematic mode, supertwist nematic-mode, supertwist birefringent mode, electrically controlled birefringence mode, in-plane-switching-mode or fringe field switching mode.
The present invention has used the difluoro methoxy bridge that contains simultaneously cyclopentyl in the molecule liquid crystalline cpd as connected clique, in order to improve the over-all properties of liquid crystal compound.The time of response that the represented compound of formula I can reduce composition, the represented compound of formula II can reduce the viscosity of composition, the represented compound of formula III can improve Δ ε and the clearing point of composition and higher voltage retention is arranged, the represented compound of formula IV can increase the Δ ε of composition, the represented compound of formula IV is the Δ n of adjustable compositions also, and the represented compound of formula V can improve the clearing point of composition.This liquid-crystal composition is applicable to the liquid-crystal composition of the liquid crystal display device of active matrix thin film transistor (AM-TFT) driving, said composition by a certain percentage, is taken into account parameters, obtains different best of breeds, meet the needs of different display modes, have important practical value.
The accompanying drawing explanation
Fig. 1 is the viewing angle characteristic of embodiment 7 gained liquid-crystal compositions.
Fig. 2 is the response characteristic of embodiment 7 gained liquid-crystal compositions.
Fig. 3 is the photoelectric curve (V of embodiment 7 gained liquid-crystal compositions
10, V
90Test).
Embodiment
The present invention is further elaborated below in conjunction with specific embodiment, but the present invention is not limited to following examples.Described method is ordinary method if no special instructions.Described starting material all can obtain from open commercial sources if no special instructions.
In following embodiment, CP means clearing point, and Δ n means optical anisotropy (589nm, 20 ℃), and Δ ε means dielectric anisotropy, γ
1Mean rotary viscosity, V
10Mean the voltage when in electro-optical curve, transmitance is 10% relatively, V
90Mean the voltage when in electro-optical curve, transmitance is 90% relatively, concrete measuring method is specific as follows:
1, Δ n:589nm, 20 ℃, ZWA-J type Abbe refractometer;
2, Δ ε: 25 ℃, 1KHz, parallel box, HP-4284A photoelectricity test instrument;
3, the micro-thermal analyzer of CP:WRX-1S, setting temperature rise rate is 3 ℃/min.
4, γ
1: 25 ℃, 20.0 microns parallel boxes, TOYO SR-6254 viscosity tester.
V
10, V
90Measuring method as follows: liquid-crystal composition is inserted in the left-handed TN liquid crystal cell of 5.2 μ m, uses LCT-5016 photoelectricity test instrument, measure at 25 ℃ of temperature.
Table 1, table 2, table 3, table 4 provide the symbol of common structure fragment, and complex compound means with structural formula.
Table 1, ring structure subunit title abbreviation table
Table 2, linking group title abbreviation table
Table 3, end group title abbreviation table
Wherein n and m are natural numbers.
Table 4, simple group example
| F means fluorine | CL means chlorine |
| CN means cyano group | CF 3Mean trifluoromethyl |
| CF 3O means trifluoromethoxy | ? |
Complex compound means with structural formula:
Shown in structure symbolically in the following example:
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝82℃；Δn＝0.101；Δε＝3.8；V
10＝2.07V；V
90＝3.12V；γ
1＝67。
As can be seen from the above results, said composition has lower rotary viscosity γ
1, threshold value V
10Lower (seeing Fig. 3), the time of response fast (seeing Fig. 2), viewing angle characteristic as shown in Figure 1, is a over-all properties liquid-crystal composition preferably, is applicable to TFT and drives liquid-crystal display.
Embodiment 2
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
Δn＝0.118，CP＝75.8℃，V10＝2.08，V90＝2.95，Δε＝4.43，γ
1＝46.2。
As from the foregoing, said composition contains the 5-membered ring compounds that F-1 means, V10 and V90 reduce, and clearing point slightly raises, and these parameters change the performance of the liquid-crystal display that is conducive to improve driven with active matrix.
Embodiment 3:
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝83℃；Δn＝0.102；Δε＝3.9；V
10＝2.04V；V
90＝3.08V；γ
1＝68。
As can be seen from the above results, said composition has lower rotary viscosity γ
1=68, threshold value V
10Lower, over-all properties is the mixed liquid crystal composition preferably, is applicable to the liquid-crystal display of driven with active matrix.
Embodiment 4
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝80.8℃；Δn＝0.102；Δε＝3.61；V
10＝2.26V；V
90＝3.40V。
As from the foregoing, the composition of said composition is simple, can be used for passive and liquid-crystal display driven with active matrix.
Embodiment 5
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝90℃；Δn＝0.100；Δε＝7。
As from the foregoing, the said composition clearing point is higher, and Δ n drops between the expected range 0.08～0.12 of optical anisotropy (Δ n) value that TFT-LCD is complementary.
Embodiment 6
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝92℃；Δn＝0.100；Δε＝7.2。
As from the foregoing, the said composition clearing point is higher, and Δ n drops between the expected range 0.08～0.12 of optical anisotropy (Δ n) value that TFT-LCD is complementary, and Δ ε is larger, is conducive to low voltage drive.
Embodiment 7
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
Δn＝0.114，CP＝81.3℃，V10＝2.84，V90＝3.84，Δε＝2.7，γ
1＝48.8；
As from the foregoing, said composition can be for the driven with active matrix of liquid-crystal display.
Embodiment 8
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝74℃；Δn＝0.115；Δε＝3.2；V10＝2.57；V90＝3.63；
As from the foregoing, said composition Δ n drops between the expected range 0.08～0.12 of optical anisotropy (Δ n) value that TFT-LCD is complementary, and Δ ε is larger, is conducive to low voltage drive.
According to following mass percent, each compound is mixed, obtains liquid-crystal composition:
The physical parameter test result of this liquid-crystal composition is as follows:
CP＝76℃；Δn＝0.108；Δε＝5.7；V10＝1.78；V90＝2.66；
As from the foregoing, said composition Δ n drops between the expected range 0.08～0.12 of optical anisotropy (Δ n) value that TFT-LCD is complementary, and Δ ε is larger, is conducive to low voltage drive.
Claims (10)
1. a liquid-crystal composition, comprise formula I to compound shown in formula III;
Formula I
Formula II
Formula III
Described formula I to formula III, R
1And R
2All be selected from least a in the alkenyl of the alkoxyl group of alkyl, C1-C7 of hydrogen, fluorine, cyano group, trifluoromethyl, trifluoromethoxy, C1-C7 and C2-C5;
L
1And L
2All be selected from least a in hydrogen and fluorine;
Z
1Be selected from-COO-,-CH
2CH
2-,-CH
2O-,-CF
2O-,-at least a in C ≡ C-and singly-bound;
N
1Be 0 or 1 or 2 or 3.
2. liquid-crystal composition according to claim 1 is characterized in that: described liquid-crystal composition is comprised of to compound shown in formula III described formula I.
3. liquid-crystal composition according to claim 1 and 2, it is characterized in that: shown in described formula I, the mass parts of compound is 6～65 parts, and the mass parts of compound shown in formula II is 5～55 parts, and the mass parts of compound shown in formula III is 1～60 part.
4. according to the arbitrary described liquid-crystal composition of claim 1-3, it is characterized in that: described liquid-crystal composition also comprises shown in formula IV and formula V at least a in compound;
Formula IV
Formula V
In described formula IV and formula V, R
3, R
4With Y, all be selected from least a in the alkenyl of the alkoxyl group of alkyl, C1-C7 of C1-C7 and C2-C5;
L
3And L
4All be selected from least a in H and F;
Z
2Be selected from-COO-,-CH
2CH
2-,-CH
2O-,-at least a in C ≡ C-and singly-bound;
N
2Be 0 or 1 or 2.
5. according to the arbitrary described liquid-crystal composition of claim 1-4, it is characterized in that: shown in described formula IV and formula V, the mass parts of compound is 0～40 part, and the mass parts of formula IV and formula V compound is 0 when different, specifically is 0～30 part.
6. according to the arbitrary described liquid-crystal composition of claim 1-5, it is characterized in that: described liquid-crystal composition is by least a composition the in compound shown in compound and formula IV and formula V shown in described formula I-formula III.
7. according to the arbitrary described liquid-crystal composition of claim 1-6, it is characterized in that: shown in described formula I, be compound shown in formula Ia in compound:
Formula Ia
In described formula Ia, R
1And R
2Identical with definition in claim 1 Chinese style I; R
2Specifically be selected from least a in the alkenyl of the alkyl of C1-C5 and C2-C5; Or,
Shown in described formula Ia, compound is specially
In described formula II, R
1Be selected from least a in the alkyl of C1-C5;
R
2Be selected from least a in the alkenyl of the alkyl of fluorine, C1-C5 and C2-C5;
Shown in described formula IIa, compound is specially
Compound shown in described formula III be compound shown in formula III a, formula III b, formula III c or
Formula III a
In described formula III a, R
1Identical with definition in formula III in claim 1; R
1Specifically be selected from least a in the alkyl of C1-C5 and hydrogen;
It is identical with definition in formula III in claim 1,
Be specially Isosorbide-5-Nitrae-cyclohexylidene or Isosorbide-5-Nitrae-phenylene or the fluoro-Isosorbide-5-Nitrae-phenylene of 3,5-bis-or singly-bound or cyclopentyl, and
Identical or different; Or,
Shown in described formula III a, compound is specially
Formula III b
In described formula III b, R
1Identical with definition in formula III in claim 1; R
1Specifically be selected from least a in the alkenyl of the alkyl of C1-C5 and C2-C5;
It is identical with definition in formula III in claim 1,
Specifically be selected from least a in Isosorbide-5-Nitrae-cyclohexylidene and Isosorbide-5-Nitrae-phenylene and the fluoro-Isosorbide-5-Nitrae-phenylene of 3,5-bis-;
It is identical with definition in formula III in claim 1,
Specifically all be selected from least a in Isosorbide-5-Nitrae-phenylene and Isosorbide-5-Nitrae-cyclohexylidene and the fluoro-Isosorbide-5-Nitrae-phenylene of 3,5-bis-;
L
1And L
2Identical with definition in formula III in claim 1, L
1And L
2Concrete all be selected from least a in hydrogen and fluorine;
R
2Identical with definition in formula III in claim 1, R
2Specifically be selected from least a in the alkenyl of the alkyl of fluorine, C1-C5 and C2-C5; Or,
Shown in described formula III b, compound is specially
Formula III c
In described formula III c, R
1Identical with definition in formula III in claim 1; R
1Specifically be selected from least a in the alkyl of C1-C5, more specifically be selected from least a in the alkyl of C2-C4;
It is identical with definition in formula III in claim 1,
Specifically be selected from least a in Isosorbide-5-Nitrae-phenylene, the fluoro-Isosorbide-5-Nitrae-phenylene of 2-and the fluoro-Isosorbide-5-Nitrae-phenylene of 3-; Or,
Shown in described formula III c, compound is specially
Compound shown in described formula IV is compound shown in formula IVa:
Formula IVa
In described formula IVa, R
3Identical with definition in claim 4 Chinese style IV; R
3Specifically be selected from least a in the alkyl of C1-C5;
Y is identical with definition in claim 4 Chinese style IV; Y specifically be selected from fluorine and-OCF
3In at least a; Or,
Shown in described formula IVa, compound is specially
Shown in described formula V, compound is
8. according to the arbitrary described liquid-crystal composition of claim 1-7, it is characterized in that: the optical anisotropy of described liquid-crystal composition is 0.08-0.13; And/or,
Clearing point is 69 ℃-110 ℃.
9. according to the arbitrary described liquid-crystal composition of claim 1-8, it is characterized in that: described liquid-crystal composition is to comprise or any one in composition I-IX that each compound of following mass parts forms;
In described composition I, the structural formula of each compound and mass parts are as follows:
In described composition I I, the structural formula of each compound and mass parts are as follows:
In described composition I II, the structural formula of each compound and mass parts are as follows:
In described composition I V, the structural formula of each compound and mass parts are as follows:
In described composition V, structural formula and the mass parts of each compound are as follows:
In described composition VI, structural formula and the mass parts of each compound are as follows:
In described composition VII, structural formula and the mass parts of each compound are as follows:
In described composition VIII, structural formula and the mass parts of each compound are as follows:
In described composition I X, the structural formula of each compound and mass parts are as follows:
10. the liquid crystal display device that contains the driven with active matrix of the arbitrary described liquid-crystal composition of claim 1-9; Or,
The application of the arbitrary described liquid-crystal composition of claim 1-9 in the liquid crystal display device of preparation driven with active matrix; Or,
The liquid crystal display device of described driven with active matrix is specially indicating meter; Or,
The display format of described indicating meter is specially twisted nematic mode, supertwist nematic-mode, supertwist birefringent mode, electrically controlled birefringence mode, in-plane-switching-mode or fringe field switching mode.
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