CN104560054A - Liquid crystal composition and liquid crystal display device - Google Patents
Liquid crystal composition and liquid crystal display device Download PDFInfo
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- CN104560054A CN104560054A CN201310499408.3A CN201310499408A CN104560054A CN 104560054 A CN104560054 A CN 104560054A CN 201310499408 A CN201310499408 A CN 201310499408A CN 104560054 A CN104560054 A CN 104560054A
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- 0 C=[*+]C(CC1)CCC1C(CC1)CCC1c(cc1F)cc(F)c1F Chemical compound C=[*+]C(CC1)CCC1C(CC1)CCC1c(cc1F)cc(F)c1F 0.000 description 5
- XEUBIZKVIKPXKE-UHFFFAOYSA-N CC(CC1)CCC1C(CC1)CCC1C(CC(C1F)F)=CC1F Chemical compound CC(CC1)CCC1C(CC1)CCC1C(CC(C1F)F)=CC1F XEUBIZKVIKPXKE-UHFFFAOYSA-N 0.000 description 1
- RRCPNPUAQNHMKE-WLYUNCDWSA-N C[C@H](CC(CC1)CCC1c(cc1)ccc1-c(cc1N)cc(N)c1N)N Chemical compound C[C@H](CC(CC1)CCC1c(cc1)ccc1-c(cc1N)cc(N)c1N)N RRCPNPUAQNHMKE-WLYUNCDWSA-N 0.000 description 1
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Abstract
The invention provides a liquid crystal composition. The liquid crystal composition comprises one or more compounds with the general formula I, accounting for 10-60% of the total weight of the liquid crystal composition, one or more compounds with the general formula II, accounting for 15-40% of the total weight of the liquid crystal composition, one or more compounds with the general formula III, accounting for 5-25% of the total weight of the liquid crystal composition, one or more compounds with the general formula IV, accounting for 5-30% of the total weight of the liquid crystal composition, and one or more compounds with the general formula V-1 and/ or V-2, accounting for 0-20% of the total weight of the liquid crystal composition. The liquid crystal composition has a relatively high clearing point, properly high dielectric anisotropy, properly high optical anisotropy, a relatively fast response speed, a relatively high voltage holding ratio and good ultraviolet-resistant stability, and is suitable for FFS and other display modes. The invention further provides a liquid crystal display device comprising the liquid crystal composition.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, particularly a kind of have higher clearing point, suitably large dielectric anisotropy, suitably high optical anisotropy, faster response speed, preferably voltage retention and the good liquid-crystal composition of ultraviolet light stability and the application in liquid crystal display device thereof.
Background technology
Liquid-crystal display (the liquid crystal display) indicating meter for utilizing liquid crystal electro-optic to change, it has that volume is little, lightweight, low power consumption and the attracting advantage such as display quality is good, has therefore become the main flow of flat-panel screens in recent years.The electrooptics pattern that existing liquid-crystal display adopts such as reverses the pattern of nematic (TN), super twisted nematic (STN), optical compensation curved (OCB) and electrically conerolled birefringence (ECB) pattern and their various variants.These all patterns all use electric field, and this electric field is substantially perpendicular to substrate, or perpendicular to liquid crystal layer, except these patterns, also there is employing and be arranged essentially parallel to substrate, or the electrooptics pattern of the electric field of liquid crystal layer, as passive matrix electrophoretic displays.
For this class display, need that there is the novel liquid crystal medium improving performance.Especially, for many type useds, the liquid crystal media comprising liquid-crystal composition must have suitable nematic temperature range, suitable degree of birefringence, high voltage holding ratio, reduce power consumption, low rotary viscosity and good low temperature property retention.
The liquid-crystal composition being applicable to LCD and being applicable to TFT indicating meter is especially such as from JP07-181439 (A), and EP0667555, EP0673986, DE19509410, DE19528106, DE19528107, WO9623851 and WO9628521 are known.But these liquid-crystal compositions have significant shortcoming.Major part in them, except other shortcomings, especially causes the time of response of disadvantageous length, has too low resistivity and needs too high operating voltage.In addition, not stablize especially when many existing liquid crystal materials are stored at low temperatures.
Therefore, in liquid crystal material field, need that there is practical application desired properties especially, as the liquid-crystal composition of wider nematic phase range, suitable optical anisotropy, high voltage retention, good anti-ultraviolet property and very fast response speed.
Summary of the invention
The object of this invention is to provide a kind of liquid-crystal composition, it has higher clearing point, suitably large dielectric anisotropy, suitably high optical anisotropy, faster response speed, the preferably characteristic such as voltage retention and good ultraviolet stability, and this liquid-crystal composition is applicable to the display formats such as FFS.
One aspect of the present invention provides a kind of liquid-crystal composition, comprises:
Account for the compound of one or more formula I of described liquid-crystal composition gross weight 10-60%
Account for the compound of one or more general formulas II of described liquid-crystal composition gross weight 15-40%
Account for the compound of one or more general formula III of described liquid-crystal composition gross weight 5-25%
Account for the compound of one or more general formulae IV of described liquid-crystal composition gross weight 5-30%
and
Account for the compound of one or more general formulas V-1 and/or V-2 of described liquid-crystal composition gross weight 0-20%
Wherein,
R
1, R
7and R
9identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another;
R
2, R
3, R
4and R
8identical or different, represent that carbonatoms is the alkyl of 2-5 independently of one another;
R
5and R
6identical or different, represent that carbonatoms is the thiazolinyl of 2-4 independently of one another;
Further, the compound of described formula I and described general formula II accounts for the 40-85% of described liquid-crystal composition gross weight.
Liquid-crystal composition of the present invention, also comprises:
Account for the compound of one or more general formulas VI of described liquid-crystal composition gross weight 0-10%
and
Account for the compound of one or more general formulas VII of described liquid-crystal composition gross weight 0-20%
Wherein,
R
10and R
11identical or different, represent that carbonatoms is alkyl or the alkoxyl group of 1-7 independently of one another, or carbonatoms is thiazolinyl or the alkene oxygen base of 2-7.
In some embodiments of the present invention, the compound of preferred described formula I accounts for the 15-35% of described liquid-crystal composition gross weight; The compound of described general formula II accounts for the 15-40% of described liquid-crystal composition gross weight; The compound of described general formula III accounts for the 5-20% of described liquid-crystal composition gross weight; The compound of described general formulae IV accounts for the 5-20% of described liquid-crystal composition gross weight; The compound of described general formula V-1 and/or V-2 accounts for the 3-15% of described liquid-crystal composition gross weight; The compound of described general formula VI accounts for the 0-10% of described liquid-crystal composition gross weight; And the compound of described general formula VII accounts for the 0-15% of described liquid-crystal composition gross weight.
In certain embodiments of the present invention, described R
10and R
11identical or different, represent that carbonatoms is the alkyl of 1-7 independently of one another.
Another aspect of the present invention provides a kind of liquid crystal display device, and described liquid crystal display device comprises liquid-crystal composition of the present invention.
The present invention is by carrying out combination experiment to above-claimed cpd, by with the comparison contrasted, determine the liquid crystal media comprising above-mentioned liquid-crystal composition, there is the characteristic of less viscosity, good low-temperature stability, large dielectric anisotropic, high voltage retention and good ultraviolet stability.
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-crystal composition:
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: nCCGF, and the n in code represents the C atomicity of left end alkyl, and such as n is " 3 ", namely represents that this alkyl is-C
3h
7; C in code represents cyclohexyl.
Compound for following structural formula:
This structural formula as represented by code listed in Table 1, then can be expressed as: V2CCP1.
In following examples test event to write a Chinese character in simplified form code name as follows:
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 8V.
VHR(60 DEG C) be use the system testing of TOY06254 type liquid crystal evaluation of physical property to obtain; Probe temperature is 60 DEG C, and the test duration is 16.6ms; VHR(UV, 60 DEG C) be use the system testing of TOY06254 type liquid crystal evaluation of physical property to obtain; Probe temperature 60 DEG C, the test duration is 16.6ms, and the solar irradiation time is 8h.
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 1 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
Reference examples 2
Be mixed with the liquid-crystal composition of reference examples 2 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 1
Be mixed with the liquid-crystal composition of embodiment 1 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 2
Be mixed with the liquid-crystal composition of embodiment 2 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 3
Be mixed with the liquid-crystal composition of embodiment 3 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
Embodiment 4
Be mixed with the liquid-crystal composition of embodiment 4 by each compound listed in table 7 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 7 liquid crystal combination composition formula and test performance thereof
With reference to reference examples 1 and reference examples 2, from the test data of above embodiment 1,2,3 and 4, liquid-crystal composition provided by the present invention has response speed, better voltage retention and better ultraviolet light stability faster, is applicable in the liquid crystal display devices such as FFS.
Claims (6)
1. a liquid-crystal composition, comprises:
Account for the compound of one or more formula I of described liquid-crystal composition gross weight 10-60%
Account for the compound of one or more general formulas II of described liquid-crystal composition gross weight 15-40%
Account for the compound of one or more general formula III of described liquid-crystal composition gross weight 5-25%
Account for the compound of one or more general formulae IV of described liquid-crystal composition gross weight 5-30%
and
Account for the compound of one or more general formulas V-1 and/or V-2 of described liquid-crystal composition gross weight 0-20%
Wherein,
R
1, R
7and R
9identical or different, represent that carbonatoms is the alkyl of 1-5 independently of one another;
R
2, R
3, R
4and R
8identical or different, represent that carbonatoms is the alkyl of 2-5 independently of one another;
R
5and R
6identical or different, represent that carbonatoms is the thiazolinyl of 2-4 independently of one another;
Further, the compound of described formula I and described general formula II accounts for the 40-85% of described liquid-crystal composition gross weight.
2. liquid-crystal composition according to claim 1, is characterized in that, described liquid-crystal composition also comprises:
Account for the compound of one or more general formulas VI of described liquid-crystal composition gross weight 0-10%
Wherein,
R
10represent that carbonatoms is alkyl or the alkoxyl group of 1-7, or carbonatoms is thiazolinyl or the alkene oxygen base of 2-7.
3. liquid-crystal composition according to claim 2, is characterized in that, described liquid-crystal composition also comprises:
Account for the compound of one or more general formulas VII of described liquid-crystal composition gross weight 0-20%
Wherein,
R
11represent that carbonatoms is alkyl or the alkoxyl group of 1-7, or carbonatoms is thiazolinyl or the alkene oxygen base of 2-7.
4. liquid-crystal composition according to claim 3, is characterized in that, the compound of described formula I accounts for the 15-35% of described liquid-crystal composition gross weight; The compound of described general formula II accounts for the 15-40% of described liquid-crystal composition gross weight; The compound of described general formula III accounts for the 5-20% of described liquid-crystal composition gross weight; The compound of described general formulae IV accounts for the 5-20% of described liquid-crystal composition gross weight; The compound of described general formula V-1 and/or V-2 accounts for the 3-15% of described liquid-crystal composition gross weight; The compound of described general formula VI accounts for the 0-10% of described liquid-crystal composition gross weight; And the compound of described general formula VII accounts for the 0-15% of described liquid-crystal composition gross weight.
5. the liquid-crystal composition according to any one in Claims 1-4, is characterized in that, described liquid-crystal composition comprises:
Account for the compound of described liquid-crystal composition gross weight 15%
Account for the compound of described liquid-crystal composition gross weight 11%
Account for the compound of described liquid-crystal composition gross weight 15%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 23%
and
Account for the compound of described liquid-crystal composition gross weight 5%
Or described liquid-crystal composition comprises:
Account for the compound of described liquid-crystal composition gross weight 15%
Account for the compound of described liquid-crystal composition gross weight 10%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 18%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 5%
and
Account for the compound of described liquid-crystal composition gross weight 7%
Or described liquid-crystal composition comprises:
Account for the compound of described liquid-crystal composition gross weight 8%
Account for the compound of described liquid-crystal composition gross weight 14%
Account for the compound of described liquid-crystal composition gross weight 8%
Account for the compound of described liquid-crystal composition gross weight 11%
Account for the compound of described liquid-crystal composition gross weight 7%
Account for the compound of described liquid-crystal composition gross weight 8%
Account for the compound of described liquid-crystal composition gross weight 7%
Account for the compound of described liquid-crystal composition gross weight 8%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 10%
Account for the compound of described liquid-crystal composition gross weight 5%
and
Account for the compound of described liquid-crystal composition gross weight 9%
Or described liquid-crystal composition comprises:
Account for the compound of described liquid-crystal composition gross weight 15%
Account for the compound of described liquid-crystal composition gross weight 7%
Account for the compound of described liquid-crystal composition gross weight 10%
Account for the compound of described liquid-crystal composition gross weight 4%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 4%
Account for the compound of described liquid-crystal composition gross weight 6%
Account for the compound of described liquid-crystal composition gross weight 3%
Account for the compound of described liquid-crystal composition gross weight 3%
Account for the compound of described liquid-crystal composition gross weight 17%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
Account for the compound of described liquid-crystal composition gross weight 5%
and
Account for the compound of described liquid-crystal composition gross weight 5%
6. a liquid crystal display device, comprises the liquid-crystal composition described in any one in claim 1 to 5.
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| EP1788064A1 (en) * | 2005-11-16 | 2007-05-23 | Chisso Corporation | Liquid crystal composition and liquid crystal display device |
| CN101031631A (en) * | 2004-10-04 | 2007-09-05 | 智索株式会社 | Liquid crystal composition and liquid crystal display element |
| CN101560398A (en) * | 2004-10-04 | 2009-10-21 | 智索株式会社 | Tetrahydrofuran compound, liquid crystal composition and liquid crystal display device containing the liquid crystal composition |
| CN101665701A (en) * | 2009-09-25 | 2010-03-10 | 北京八亿时空液晶材料科技有限公司 | Nematic liquid crystal composition |
| CN102994098A (en) * | 2012-05-03 | 2013-03-27 | 石家庄诚志永华显示材料有限公司 | TFT (Thin Film Transistor) liquid crystal composition and preparation method and application thereof |
| CN103224799A (en) * | 2013-04-16 | 2013-07-31 | 西安彩晶光电科技股份有限公司 | Liquid crystal composition |
| CN103265959A (en) * | 2013-06-09 | 2013-08-28 | 石家庄诚志永华显示材料有限公司 | TFT (Thin Film Transistor) liquid crystal composite |
-
2013
- 2013-10-22 CN CN201310499408.3A patent/CN104560054B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101031631A (en) * | 2004-10-04 | 2007-09-05 | 智索株式会社 | Liquid crystal composition and liquid crystal display element |
| CN101560398A (en) * | 2004-10-04 | 2009-10-21 | 智索株式会社 | Tetrahydrofuran compound, liquid crystal composition and liquid crystal display device containing the liquid crystal composition |
| EP1788064A1 (en) * | 2005-11-16 | 2007-05-23 | Chisso Corporation | Liquid crystal composition and liquid crystal display device |
| CN101665701A (en) * | 2009-09-25 | 2010-03-10 | 北京八亿时空液晶材料科技有限公司 | Nematic liquid crystal composition |
| CN102994098A (en) * | 2012-05-03 | 2013-03-27 | 石家庄诚志永华显示材料有限公司 | TFT (Thin Film Transistor) liquid crystal composition and preparation method and application thereof |
| CN103224799A (en) * | 2013-04-16 | 2013-07-31 | 西安彩晶光电科技股份有限公司 | Liquid crystal composition |
| CN103265959A (en) * | 2013-06-09 | 2013-08-28 | 石家庄诚志永华显示材料有限公司 | TFT (Thin Film Transistor) liquid crystal composite |
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