CN104610981A - Liquid crystal composition and display device containing liquid crystal composition thereof - Google Patents
Liquid crystal composition and display device containing liquid crystal composition thereof Download PDFInfo
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- CN104610981A CN104610981A CN201310542769.1A CN201310542769A CN104610981A CN 104610981 A CN104610981 A CN 104610981A CN 201310542769 A CN201310542769 A CN 201310542769A CN 104610981 A CN104610981 A CN 104610981A
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- 0 *C=CC(CC1)CCC1C(CC1)CCC1c(cc1I)cc(F)c1F Chemical compound *C=CC(CC1)CCC1C(CC1)CCC1c(cc1I)cc(F)c1F 0.000 description 4
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Abstract
The invention provides a liquid crystal composition, which comprises at least a compound in a general formula I; at least a compound selected from a general formula II-1, a general formula II-2, a general formula II-3, a general formula II-4 and its combination; and at least a compound selected from a general formula III-1, a general formula III-2 and its combination. The liquid crystal composition can be used for a liquid crystal element, and has the performances of low viscosity, fast response speed and good low temperature reliability. The invention also provides a liquid crystal display containing the liquid crystal composition.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, particularly there is lower viscosity, suitable optical anisotropy and the liquid-crystal composition of dielectric anisotropy and low-temperature stability and the liquid crystal display device containing this liquid-crystal composition.
Background technology
Liquid crystal material is at a certain temperature, the mobility not only with liquid but also the mixture of anisotropic organic bar-shaped micromolecular compound with crystal.Liquid crystal material is mainly used as the dielectric medium in indicating meter, and its reason is that the optical property of this kind of material changes by the voltage applied.Electrooptical devices based on liquid crystal is known in those skilled in the art, and such device is battery, DAP (aiming at the distortion of phase) battery, object/main body battery, the TN battery with twisted nematic structure, STN (super-twisted nematic) battery, SBE (super birefringence effect) cell box OMI (optical mode interference) battery with dynamic scattering.
For liquid-crystal display, possess good chemistry and thermostability, the good stability to electric field and electromagnetic radiation, the liquid crystalline cpd of suitable optical anisotropy, faster response speed and lower threshold voltage and liquid crystal media and meet current needs.Because the mixture of liquid crystal usually used as various ingredients uses, dissolving each other each other between each component, seems particularly important, and according to different battery types and Application Areas, liquid crystal must meet different requirements, as specific conductivity, dielectric anisotropy and optical anisotropy etc., but the shortcoming significantly existed in the prior art is the longer time of response, low resistivity and operating voltage is excessively high, as EP0673986, DE19528106, DE19528107.In addition, low temperature storage stability is poor is also the defect of existing many liquid crystal materials.
A series of compounds up to now with liquid crystal Jie phase do not comprise the monomeric compound meeting all these aspects and require, therefore, in liquid crystal material field, need to have the novel liquid crystalline compositions improving performance.Especially, for many type useds, liquid-crystal composition must have suitable wide nematic phase range, suitable specific refractory power, dielectric anisotropy and low temperature storage stability.
Therefore, the liquid crystal display device with suitable optical anisotropy and dielectric anisotropy, wider operating temperature range, short response time and good low temperature storage stability is still starved of.
Summary of the invention
The object of this invention is to provide a kind of liquid-crystal composition, this liquid-crystal composition has the performances such as suitable dielectric anisotropy, suitable optical anisotropy, lower viscosity, fast response time and good Low-Temperature Reliability.
One aspect of the present invention provides a kind of liquid-crystal composition, and described liquid-crystal composition comprises:
The compound of at least one formula I
At least one is selected from the compound of the group of general formula II-1, general formula II-2, general formula II-3, general formula II-4 and combination composition thereof
At least one is selected from the compound of the group of general formula III-1, general formula III-2 and combination composition thereof
Wherein,
R
1represent that carbonatoms is the alkyl of 1-5 independently of one another;
R
2, R
3, R
4and R
5identical or different, represent that H, carbonatoms are the alkyl of 1-3 independently of one another;
R
6, R
7, R
8and R
9identical or different, represent that carbonatoms is alkyl or the alkoxyl group of 1-5 independently of one another, or carbonatoms is the thiazolinyl of 2-5;
L
1, L
2, L
3and L
4identical or different, represent H or F independently of one another.
In embodiments of the invention, the compound of preferred described formula I accounts for the 10-50% of described liquid-crystal composition gross weight; The compound of the group of described general formula II-1, general formula II-2, general formula II-3, general formula II-4 and combination composition thereof accounts for the 5-50% of described liquid-crystal composition gross weight; And the compound of the group of described general formula III-1, general formula III-2 and combination composition thereof accounts for the 15-60% of described liquid-crystal composition gross weight.
In some embodiments of the present invention, preferred described R
1represent that carbonatoms is the alkyl of 2-5 independently of one another; Described R
2, R
3, R
4and R
5identical or different, represent H or CH independently of one another
3; R
6, R
7, R
8and R
9identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another, or carbonatoms is the thiazolinyl of 2-5.
In some embodiments of the present invention, the compound of described formula I is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula II-1 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula II-2 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula II-3 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula II-4 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula III-1 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formula III-2 is selected from one or more of compound in the group be made up of following compound:
Liquid-crystal composition of the present invention also comprises:
At least one accounting for described liquid-crystal composition gross weight 1-40% is selected from the compound of the group of general formulae IV-1, general formulae IV-2 and combination composition thereof
Wherein,
R
10, R
11and R
12identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another;
L
5and L
6identical or different, represent H or F independently of one another.
In some embodiments of the present invention, the compound of described general formulae IV-1 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formulae IV-2 is selected from one or more of compound in the group be made up of following compound:
In some embodiments of the present invention, the compound of described general formulae IV-3 is selected from one or more of compound in the group be made up of following compound:
Another aspect of the present invention is to provide the liquid-crystal display comprising liquid-crystal composition of the present invention.
The present invention is by carrying out combination experiment to above-claimed cpd, by with the comparing of reference examples, determine the liquid crystal media comprising above-mentioned liquid-crystal composition, there is the characteristics such as suitable dielectric anisotropy, suitable optical anisotropy, lower viscosity, fast response speed and good Low-Temperature Reliability, go in liquid crystal display device.
In the present invention if no special instructions, described ratio is weight ratio, and all temperature are degree celsius temperature, and the box selected of the test of described response time data is thick is 7 μm.
Embodiment
Below with reference to specific embodiments, the present invention is described.It should be noted that, the following examples are example of the present invention, are only used for the present invention is described, and are not used for limiting the present invention.When not departing from purport of the present invention or scope, other combination and the various improvement in design of the present invention can be carried out.
For ease of expressing, in following embodiment, the coded representation of unit structure listed by table 1 of liquid crystalline cpd:
The unit structure code of table 1 liquid crystalline cpd
Compound for following structural formula:
This structural formula as represented by code listed in Table 1, then can be expressed as: nDPUF, and the n in code represents the carbonatoms of left end alkyl, and such as n is " 5 ", namely represents that this alkyl is-C
5h
11; D representative " dioxane base " in code, P represents " Isosorbide-5-Nitrae-phenylene "; U represents " the fluoro-Isosorbide-5-Nitrae-phenylene of 2,5-bis-", and F represents " fluoro substituents ".
In following examples, the code name of writing a Chinese character in simplified form of each test event is expressed as:
Cp(DEG C): clearing point (to row-isotropic phase transition temperature)
Δ n: optical anisotropy (589nm, 25 DEG C)
Δ ε: dielectric anisotropy (1KHz, 25 DEG C)
τ: time of response (ms)
T
-30dEG C: the low-temperature storage time (at-30 DEG C)
Wherein, refractive anisotrop use Abbe refractometer under sodium lamp (589nm) light source, 20 DEG C test; Measurement box is TN90 type, thick 7 μm of box.
Time of response uses DMS505 tester to test at 25 DEG C; Testing cassete is the left-handed type of TN, and thick 7 μm of box, test voltage is 6.5V.
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 that obtains 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 the modes such as heating, ultrasonic wave, suspension, ratio mixing is obtained according to the rules.
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.
Reference examples 1
Be mixed with the liquid-crystal composition of reference examples by each compound listed in table 2 and weight percentage, it is filled between liquid-crystal display two substrates and carries out performance test, and test data is as shown in the table:
Table 2 liquid crystal combination composition formula and test performance thereof
Embodiment 1
Be mixed with the liquid-crystal composition of embodiment 1 by each compound listed in table 3 and weight percentage, it is filled between liquid-crystal display two substrates and carries out performance test, and test data is as shown in the table:
Table 3 liquid crystal combination composition formula and test performance thereof
Embodiment 2
Be mixed with the liquid-crystal composition of embodiment 2 by each compound listed in table 4 and weight percentage, it is filled between liquid-crystal display two substrates and carries out performance test, and test data is as shown in the table:
Table 4 liquid crystal combination composition formula and test performance thereof
Embodiment 3
Be mixed with the liquid-crystal composition of embodiment 3 by each compound listed in table 5 and weight percentage, it is filled between liquid-crystal display two substrates and carries out performance test, and test data is as shown in the table:
Table 5 liquid crystal combination composition formula and test performance thereof
Embodiment 4
Be mixed with the liquid-crystal composition of embodiment 4 by each compound listed in table 6 and weight percentage, it is filled between liquid-crystal display two substrates and carries out performance test, and test data is as shown in the table:
Table 6 liquid crystal combination composition formula and test performance thereof
With reference to reference examples 1, from the test data of above embodiment 1,2,3 and 4, liquid-crystal composition provided by the present invention has the characteristic of stable storing and fast response time under suitable negative dielectric anisotropic, suitable optical anisotropy, low temperature, is applicable in liquid crystal display device.
Claims (10)
1. a liquid-crystal composition, comprises:
The compound of at least one formula I
At least one is selected from the compound of the group of general formula II-1, general formula II-2, general formula II-3, general formula II-4 and combination composition thereof
At least one is selected from the compound of the group of general formula III-1, general formula III-2 and combination composition thereof
Wherein,
R
1represent that carbonatoms is the alkyl of 1-5 independently of one another;
R
2, R
3, R
4and R
5identical or different, represent that H, carbonatoms are the alkyl of 1-3 independently of one another;
R
6, R
7, R
8and R
9identical or different, represent that carbonatoms is alkyl or the alkoxyl group of 1-5 independently of one another, or carbonatoms is the thiazolinyl of 2-5;
L
1, L
2, L
3and L
4identical or different, represent H or F independently of one another.
2. liquid-crystal composition according to claim 1, is characterized in that, the compound of described formula I accounts for the 10-50% of described liquid-crystal composition gross weight; The compound of the group of described general formula II-1, general formula II-2, general formula II-3, general formula II-4 and combination composition thereof accounts for the 5-50% of described liquid-crystal composition gross weight; And the compound of the group of described general formula III-1, general formula III-2 and combination composition thereof accounts for the 15-60% of described liquid-crystal composition gross weight.
3. liquid-crystal composition according to claim 2, is characterized in that, described R
1represent that carbonatoms is the alkyl of 2-5 independently of one another; Described R
2, R
3, R
4and R
5identical or different, represent H or CH independently of one another
3; R
6, R
7, R
8and R
9identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another, or carbonatoms is the thiazolinyl of 2-5.
4. liquid-crystal composition according to claim 3, is characterized in that, the compound of described formula I is selected from one or more of compound in the group be made up of following compound:
5. liquid-crystal composition according to claim 3, is characterized in that, the compound of described general formula II-1 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formula II-2 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formula II-3 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formula II-4 is selected from one or more of compound in the group be made up of following compound:
6. liquid-crystal composition according to claim 3, is characterized in that, the compound of described general formula III-1 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formula III-2 is selected from one or more of compound in the group be made up of following compound:
7. liquid-crystal composition according to claim 3, is characterized in that, described liquid-crystal composition also comprises:
At least one accounting for described liquid-crystal composition gross weight 1-40% is selected from the compound of the group of general formulae IV-1, general formulae IV-2 and combination composition thereof
Wherein,
R
10, R
11and R
12identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another;
L
5and L
6identical or different, represent H or F independently of one another.
8. liquid-crystal composition according to claim 7, is characterized in that, the compound of described general formulae IV-1 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formulae IV-2 is selected from one or more of compound in the group be made up of following compound:
The compound of described general formulae IV-3 is selected from one or more of compound in the group be made up of following compound:
9. liquid-crystal composition according to claim 8, is characterized in that, described liquid-crystal composition comprises:
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 7%;
Account for the chemical compounds I-3 of described liquid-crystal composition gross weight 9%;
Account for the chemical compounds I-4 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-1-1 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-1-3 of described liquid-crystal composition gross weight 11%;
Account for the compound ii-3-1 of described liquid-crystal composition gross weight 7%;
Account for the compound ii-3-3 of described liquid-crystal composition gross weight 11%;
Account for the compound ii-2-3 of described liquid-crystal composition gross weight 5%;
Account for the compound ii-4-3 of described liquid-crystal composition gross weight 5%;
Account for the compound ii-2-4 of described liquid-crystal composition gross weight 10%;
Account for the compounds Ⅳ-3-2 of described liquid-crystal composition gross weight 3%; And
Account for the compound III-1-1 of described liquid-crystal composition gross weight 15%,
Or described liquid-crystal composition comprises:
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 5%;
Account for the chemical compounds I-3 of described liquid-crystal composition gross weight 7%;
Account for the chemical compounds I-4 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-1-1 of described liquid-crystal composition gross weight 5%;
Account for the compound ii-1-3 of described liquid-crystal composition gross weight 7%;
Account for the compound ii-2-3 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-3-1 of described liquid-crystal composition gross weight 5%;
Account for the compounds Ⅳ-1-1 of described liquid-crystal composition gross weight 10%;
Account for the compounds Ⅳ-2-3 of described liquid-crystal composition gross weight 4%;
Account for the compound ii-3-3 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-4-3 of described liquid-crystal composition gross weight 4%;
Account for the compounds Ⅳ-1-5 of described liquid-crystal composition gross weight 9%;
Account for the compound III-1-3 of described liquid-crystal composition gross weight 11%; And
Account for the compound III-2-4 of described liquid-crystal composition gross weight 8%,
Or described liquid-crystal composition comprises:
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 7%;
Account for the chemical compounds I-3 of described liquid-crystal composition gross weight 9%;
Account for the chemical compounds I-4 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-1-1 of described liquid-crystal composition gross weight 10%;
Account for the compound ii-3-1 of described liquid-crystal composition gross weight 10%;
Account for the compounds Ⅳ-1-1 of described liquid-crystal composition gross weight 5%;
Account for the compounds Ⅳ-2-3 of described liquid-crystal composition gross weight 10%;
Account for the compounds Ⅳ-1-5 of described liquid-crystal composition gross weight 8%;
Account for the compounds Ⅳ-1-7 of described liquid-crystal composition gross weight 8%;
Account for the compounds Ⅳ-3-2 of described liquid-crystal composition gross weight 2%;
Account for the compound III-1-1 of described liquid-crystal composition gross weight 12%;
Account for the compound III-1-3 of described liquid-crystal composition gross weight 5%; And
Account for the compound III-2-4 of described liquid-crystal composition gross weight 5%,
Or described liquid-crystal composition comprises:
Account for the chemical compounds I-1 of described liquid-crystal composition gross weight 5%;
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 7%;
Account for the chemical compounds I-3 of described liquid-crystal composition gross weight 8%;
Account for the chemical compounds I-4 of described liquid-crystal composition gross weight 10%;
Account for the compound ii-1-1 of described liquid-crystal composition gross weight 10%;
Account for the compound ii-3-1 of described liquid-crystal composition gross weight 10%;
Account for the compound ii-2-3 of described liquid-crystal composition gross weight 4%;
Account for the compounds Ⅳ-1-5 of described liquid-crystal composition gross weight 6%;
Account for the compounds Ⅳ-1-7 of described liquid-crystal composition gross weight 3%;
Account for the compounds Ⅳ-2-4 of described liquid-crystal composition gross weight 10%;
Account for the compound III-1-1 of described liquid-crystal composition gross weight 12%;
Account for the compound III-1-3 of described liquid-crystal composition gross weight 5%;
Account for the compound III-2-4 of described liquid-crystal composition gross weight 4%;
Account for the compound III-2-5 of described liquid-crystal composition gross weight 4%; And
Account for the compound III-2-2 of described liquid-crystal composition gross weight 2%.
10. a liquid crystal display device, described liquid crystal display device comprises the liquid-crystal composition described in any one of claim 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180148647A1 (en) * | 2015-06-12 | 2018-05-31 | Dic Corporation | Composition and liquid crystal display using same |
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| AU3276897A (en) * | 1996-10-22 | 1998-05-15 | Chisso Corporation | Dioxane derivatives, liquid-crystal compositions containing the same, and liquid-crystal display devices made by using the same |
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2013
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| EP0482157B1 (en) * | 1990-04-26 | 1999-11-17 | MERCK PATENT GmbH | 1,3-dioxane derivates and liquid crystal medium |
| CN1137116A (en) * | 1995-05-29 | 1996-12-04 | 中国人民解放军总后勤部军事交通运输研究所 | Method and apparatus for measuring brake force on single-axle braking experimental bench |
| CN1182085A (en) * | 1996-07-15 | 1998-05-20 | 智索公司 | Phenyldioxane derivatives, liquid crystal compositions, and liquid crystal display elements |
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