CN104371741B - Liquid-crystal composition and application thereof - Google Patents
Liquid-crystal composition and application thereof Download PDFInfo
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Abstract
The invention provides a kind of liquid-crystal composition, comprise: at least one is selected from the compound shown in formula I as the first component；At least one is selected from the compound shown in formula II as the second component；At least one is selected from the compound shown in general formula III as the 3rd component；At least one is selected from the compound shown in general formulae IV as the 4th component；At least one is selected from the compound shown in formula V as the 5th component；And at least one is selected from the compound of formula VI 1, VI 2 and/or VI 3 as the 6th component.Liquid-crystal composition of the present invention, it possesses the characteristics such as low viscosity, good low temperature property retention energy, big optical anisotropy, big dielectric anisotropy.Present invention also offers a kind of liquid crystal display device comprising this liquid-crystal composition.Described liquid crystal display device may be used for IPS pattern, VA pattern, PS VA pattern, PALC pattern, FFS mode or ecb mode.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, particularly to a kind of have suitable optical anisotropy and dielectric respectively to
Viscosity, faster response speed different in nature, less and the liquid-crystal composition of good low temperature storage stability and at liquid crystal display
Application in device.
Background technology
From the point of view of liquid crystal display cells, be divided into PC(phase change, phase transformation according to the display pattern of liquid crystal), TN
(twist nematic, twisted-nematic), STN (super twisted nematic, super twisted nematic), ECB
(electrically controlled birefringence, electrically conerolled birefringence), OCB(optically compensated
Bend, optical compensation curved), IPS(in-plane switching, coplanar transformation), VA(vertical alignment, hang down
Straight orientation) etc. type.Liquid crystal display cells is divided into according to the type of light source and utilizes the reflection-type of nature light, utilizes passing through of backlight
Type and utilize nature light and the semi-transmission type of two kinds of light sources of backlight.
Known in above-mentioned operating mode, ecb mode, IPS pattern, VA mode equations utilize the vertical orientation of liquid crystal molecule
Property operating mode, it is narrow and small that especially IPS pattern and VA pattern can improve the display such as TN pattern, STN mode pattern visual angle
Shortcoming.
Liquid crystal material needs have the highest dielectric anisotropic, optics anisotropic and good low temperature intersolubility
And heat stability.Additionally, liquid crystal material also should have low viscosity and short response time, low threshold voltage and high-contrast.Root
The each to performance indications of compositions is further illustrated according to commercially available liquid crystal display cells.Nematic temperature range and element
Operating temperature range is associated.Nematic ceiling temperature is preferably more than or equal to 70 DEG C, and nematic lower limit temperature
Preferably less than equal to-10 DEG C.The viscosity of compositions is associated with the response time of element.Dynamic in order to show in the component
Drawing, the preferably response time of element is short.Therefore, the preferably viscosity of compositions is little, and group when preferably temperature is low
The viscosity of compound is little.
The optical anisotropy of compositions is associated with the contrast of element.In order to make the contrast ratio of liquid crystal display cells
Maximize, can (Δ n) be set as with the product value (Δ n*d) of the thickness (d) of liquid crystal layer by the optical anisotropy of liquid-crystal composition
The mode of fixed value is designed.Suitable product value depends on the kind of operating mode.As TN pattern element appropriate value about
It it is 0.45 μm.During this situation, for the element that thickness of liquid crystal layer is less, the combination that preferably optical anisotropy is big
Thing.
The big dielectric anisotropy of compositions contributes to making element to have a low critical voltage, little power consumption and big
Contrast.Therefore, the biggest dielectric anisotropy.The resistivity of compositions contributes to greatly making element have big electricity
Pressure conservation rate and big contrast.Therefore, preferably it is not only at room temperature in the starting stage and the most also has
The compositions of bigger resistivity.Preferably long-time use after the most at room temperature and also the most also there is bigger electricity
The compositions of resistance rate.Compositions is relevant to the stability of ultraviolet and heat and the life-span of liquid crystal display cells.Aforementioned stable is high
Time, the life-span of this element is long.This kind of characteristic is for liquid crystal projection apparatus, for the liquid crystal display cells used in LCD TV etc.
It is preferable.
Single liquid-crystal compounds is generally difficult to play its characteristic, generally it is mixed with other plurality of liquid crystals compounds and joins
Make compositions.In available liquid crystal compositions, it is possible to obtain preferably characteristic, but this species compound optical anisotropy
Big not, dielectric anisotropy is big not, helps little to being mixed into compositions big for Δ n and Δ ε, thus is unfavorable for being used in little
In the product that box is thick, directly result in response speed fast not, the liquid crystal combination as disclosed in CN101796162A, CN1475547A
Thing, has disadvantages mentioned above in varying degrees.
Accordingly, it would be desirable to a kind of liquid-crystal composition, it is low that it has nematic ceiling temperature lower limit temperature high, nematic
(i.e. transition temperature range width)；Low viscosity；Big optical anisotropy；Big dielectric anisotropy；Good ultraviolet
Stability；At least one characteristic in the characteristics such as good low temperature storage stability.Other objects of the present invention are to provide one
Liquid crystal display cells, it is to have that optical anisotropy is big, dielectric anisotropy big, to characteristics such as the stability of ultraviolet are high
Compositions, and make that liquid crystal display cells response time is short, irrigation crystal speed is fast, voltage retention is big, contrast is big, the life-span is long
Etc. characteristic.
Summary of the invention
It is an object of the invention to provide a kind of liquid-crystal composition, it possesses wide nematic temperature range, low viscosity, big
Optical anisotropy, big dielectric anisotropy, the characteristic such as good low temperature storage stability, comprise this liquid-crystal composition
Liquid crystal display cells has the advantages such as fast response time, clearing point is high, driving voltage is low, intersolubility is good.
In order to complete foregoing invention purpose, the present invention provides a kind of liquid-crystal composition, comprises:
At least one is selected from the compound shown in formula I as the first component
At least one is selected from the compound shown in formula II as the second component
At least one is selected from the compound shown in general formula III as the 3rd component
At least one is selected from the compound shown in general formulae IV as the 4th component
At least one is selected from the compound shown in formula V as the 5th component
At least one is selected from the compound of formula VI-1, VI-2 and/or VI-3 as the 6th component
Wherein,
R1、R2、R3、R4、R5、R6、R7And R8Identical or different, represent the alkyl of 1-5 carbon atom, 1-5 independently of one another
The alkoxyl of carbon atom, the thiazolinyl of 2-5 carbon atom or the alkenyloxy group of 2-5 carbon atom；
R9And R10Identical or different, independently of one another represent the alkyl of 1-5 carbon atom, the thiazolinyl of 2-5 carbon atom or
The alkenyloxy group of 2-5 carbon atom；
RingRepresentOr
M and n is identical or different, represents 0 or 1 independently of one another.
In some embodiments of the present invention, the compound of the most described formula I accounts for described liquid-crystal composition gross weight
1-30%；The compound of described formula II accounts for the 1-40% of described liquid-crystal composition gross weight；The compound of described formula Ш accounts for
The 1-30% of described liquid-crystal composition gross weight；The compound of described general formulae IV accounts for the 1-30% of described liquid-crystal composition gross weight；
The compound of described formula V accounts for-the 60% of described liquid-crystal composition gross weight；And described formula VI-1, VI-2 and/or VI-3
Compound account for-the 15% of described liquid-crystal composition gross weight.
In some embodiments of the present invention, to account for described liquid-crystal composition total for the compound of particularly preferred described formula I
The 5-20% of weight；The compound of described formula II accounts for the 5-30% of described liquid-crystal composition gross weight；The chemical combination of described formula Ш
Thing accounts for the 5-25% of described liquid-crystal composition gross weight；The compound of described general formulae IV accounts for the 5-of described liquid-crystal composition gross weight
25%；The compound of described formula V accounts for the 15-50% of described liquid-crystal composition gross weight；And described formula VI-1, VI-2 and/
Or the compound of VI-3 accounts for the 3-10% of described liquid-crystal composition gross weight.
In some embodiments of the present invention, in the group of the compound choosing following compound composition of described formula I
The compound of one or more:
In some embodiments of the present invention, in the group of the compound choosing following compound composition of described formula II
The compound of one or more:
In some embodiments of the present invention, in the group of the compound choosing following compound composition of described formula Ш
The compound of one or more:
In some embodiments of the present invention, in the group of the compound choosing following compound composition of described general formulae IV
The compound of one or more:
In some embodiments of the present invention, in the group of the compound choosing following compound composition of described formula V
The compound of one or more:
Another aspect of the present invention provides a kind of liquid crystal display device, and this liquid crystal display device comprises the liquid crystal of the present invention
Compositions.
In some embodiments, described liquid crystal display device may be used for IPS pattern, VA pattern, PS-VA pattern,
PALC pattern, FFS mode or ecb mode.
Liquid-crystal composition of the present invention, it possesses low viscosity, good low temperature property retention energy, big optics respectively to different
The characteristics such as property, big dielectric anisotropy, the liquid crystal display cells comprising this liquid-crystal composition has fast response time, clearing point
The advantages such as height, driving voltage is low, intersolubility is good.
In the present invention in addition to specified otherwise, the temperature related to is Celsius temperature, and all percentage ratios are by weight percentage
Calculate.
Detailed description of the invention
Below with reference to specific embodiments, the present invention is described.It should be noted that the following examples are the present invention
Example, be only used for the present invention is described, and be not limited to the present invention.In the case of without departing from present subject matter or scope,
Other combination and the various improvement in present inventive concept can be carried out.
The liquid crystal display that following embodiment is used is negative liquid crystal display device, box thickness d=4μM, by polarizing
The part such as device (polaroid), electrode base board is constituted.This display device is normal white mode, does not i.e. have voltage difference to put on row and column electricity
Time between pole, observer observes the pixel color of white.Polarizer axes up and down on substrate is 90 degrees to each other angle.At two substrates
Between space be full of optical liquid crystal material.
For ease of expressing, in following embodiment, the code listed by unit structure table 1 of liquid-crystal compounds represents:
The unit structure code of table 1 liquid-crystal compounds
As a example by following structure:
Code in this structure table 1 represents: be then represented by 3CC1OWO2, and for example:
Then being represented by nCPTPOm, the n in code represents the C atomic number of left end alkyl, and such as n is " 3 ", and i.e. representing should
Alkyl is-C3H7；C in code represents cyclohexyl；O in code represents oxygen atom；P in code represents phenylene；Code
In m represent the C atomic number of right-hand member alkyl, such as m is " 1 ", i.e. represents that the alkyl of right-hand member is-CH3。
In following example test event to write a Chinese character in simplified form code name as follows:
Refractive index and refractive anisotrop use abbe's refractometer under sodium lamp (589nm) light source, 20 DEG C test.
Dielectric anisotropy, response time, voltage tester all use 4 μm testing cassetes.
The each composition used below in an example, all can be according to " organic synthesis ", " organic reaction ", " comprehensive
Organic synthesis " etc. well known to a person skilled in the art that method synthesizes, or by being either commercially available.These synthetic technologys
Being conventional, obtained each liquid-crystal compounds meets electrical type compound standard after tested.Comparative example 1
It is component and the percetage by weight of each component of the liquid-crystal composition of comparative example 1 listed by table 2, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 2 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 5CP3 | 13 | Δn[589nm,25℃]=0.090 |
| 2CPWO2 | 12 | Cp[℃]=75.0 |
| 3CWO4 | 10 | Δε[1KHZ,25℃]=-3.0 |
| 5CWO4 | 15.5 | η[mPa.s,20℃]=28 |
| 3CCWO2 | 10 | |
| 5CCWO2 | 10.5 | |
| 5CC3 | 10 | |
| 5CCO1 | 4.5 | |
| 2CCW1 | 4.5 | |
| 3CCW1 | 10 | |
| Add up to | 100 |
Embodiment 1
It is component and the percetage by weight of each component of the liquid-crystal composition of embodiment 1 listed by table 3, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 3 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 2CPWO2 | 8 | Δn[589nm,25℃]=0.0895 |
| 3CPWO2 | 8 | Cp[℃]=80 |
| 3C1OWO2 | 11 | Δε[1KHZ,25℃]=-3.1 |
| 2CC1OWO2 | 13 | η[mPa.s,20℃]=20 |
| 3CC1OWO2 | 13 | |
| 3CC2 | 24 | |
| 4CC3 | 8 | |
| 3CCO1 | 5 | |
| 3CCP1 | 4 | |
| 3PP1 | 6 | |
| Add up to | 100 |
Comparative example 2
It is component and the percetage by weight of each component of the liquid-crystal composition of comparative example 2 listed by table 4, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 4 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 5CP3 | 13 | Δn[589nm,25℃]=0.0907 |
| 2CPWO2 | 16 | Cp[℃]=76.7 |
| 3C2WO2 | 9 | Δε[1KHZ,25℃]=-2.97 |
| 3C2WO1 | 9 | η[mPa.s,20℃]=24 |
| 3CC2WO1 | 16 | |
| 3CC2WO2 | 16 | |
| 3CC2 | 6 | |
| 5CC3 | 10 | |
| 5CCO1 | 5 | |
| Add up to | 100 |
Embodiment 2
It is component and the percetage by weight of each component of the liquid-crystal composition of embodiment 2 listed by table 5, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 5 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 2CPWO2 | 8 | Δn[589nm,25℃]=0.0898 |
| 3CPWO2 | 8 | Cp[℃]=80 |
| 3C1OWO2 | 11 | Δε[1KHZ,25℃]=-3.04 |
| 2CC1OWO2 | 12 | η[mPa.s,20℃]=19 |
| 3CC1OWO2 | 12 | |
| 3CC2 | 24 | |
| 4CC3 | 8 | |
| 5CCO1 | 7 | |
| 3CCP3 | 2 | |
| 5PP1 | 8 | |
| Add up to | 100 |
Comparative example 3
It is component and the percetage by weight of each component of the liquid-crystal composition of comparative example 3 listed by table 6, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 6 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 2CPWO2 | 7 | Δn[589nm,25℃]=0.0896 |
| 3CPWO2 | 7 | Cp[℃]=77.8 |
| 3C1OWO2 | 13 | Δε[1KHZ,25℃]=-3.09 |
| 2CC1OWO2 | 12 | η[mPa.s,20℃]=20 |
| 3CC1OWO2 | 12 | |
| 3CC2 | 24 | |
| 4CC3 | 8 | |
| 5CC3 | 5 | |
| 3CCP1 | 4 | |
| 5PPO1 | 5 | |
| 3PP1 | 3 | |
| Add up to | 100 |
Embodiment 3
It is component and the percetage by weight of each component of the liquid-crystal composition of embodiment 3 listed by table 7, by this liquid crystal combination
Thing is filled between liquid crystal display two substrates and carries out performance test, and test data are as shown in the table:
The formula of table 7 liquid-crystal composition and test performance thereof
| Component codes | Percetage by weight | Performance parameter test result |
| 2CPWO2 | 7 | Δn[589nm,25℃]=0.0891 |
| 3CPWO2 | 7 | Cp[℃]=77.0 |
| 3C1OWO2 | 12 | Δε[1KHZ,25℃]=-3.10 |
| 2CC1OWO2 | 12 | η[mPa.s,20℃]=19.5 |
| 3CC1OWO2 | 12 | |
| 3CC2 | 24 | |
| 4CC3 | 9 | |
| 3CCO3 | 5 | |
| 3CCP1 | 4 | |
| 5PPO1 | 5 | |
| 3PP1 | 3 | |
| Add up to | 100 |
Embodiment 4
It is comparative example 1, comparative example 2, comparative example 3, embodiment 1, embodiment 2 and the liquid crystal combination of embodiment 3 listed by table 8
Thing, under the conditions of-20 DEG C, tests described liquid-crystal composition and the low temperature property retention pouring in liquid crystal cell by described liquid-crystal composition
Can, wherein, the low temperature property retention of liquid-crystal composition can use LTS1Representing, the low temperature property retention of liquid crystal cell can use LTS2Represent, test
Data are as shown in the table:
The low temperature property retention energy of table 8 liquid-crystal composition
| LTS1 | LTS2 | |
| Comparative example 1 | Clarification in 10 days, crystallization in 11 days | Clarification in 30 days |
| Embodiment 1 | Clarification in 14 days | Clarification in 30 days |
| Comparative example 2 | Clarification in 12 days, crystallization in 13 days | Clarification in 30 days |
| Embodiment 2 | Clarification in 14 days | Clarification in 30 days |
| Comparative example 3 | Clarification in 3 days, crystallization in 4 days | Clarification in 10 days, crystallization in 11 days |
| Embodiment 3 | Clarification in 7 days, crystallization in 8 days | Clarification in 30 days |
Claims (9)
1. a liquid-crystal composition, comprises:
At least one is selected from the compound shown in formula I as the first component
At least one is selected from the compound shown in formula II as the second component
At least one is selected from the compound shown in general formula III as the 3rd component
At least one is selected from the compound shown in general formulae IV as the 4th component
At least one is selected from the compound shown in formula V as the 5th component
At least one is selected from the compound of formula VI-1, VI-2 and/or VI-3 as the 6th component
Wherein,
R1、R2、R3、R4、R5、R6、R7And R8Identical or different, represent that the alkyl of 1-5 carbon atom, 1-5 carbon are former independently of one another
Alkoxyl, the thiazolinyl of 2-5 carbon atom or the alkenyloxy group of 2-5 carbon atom of son；
R9And R10Identical or different, represent the alkyl of 1-5 carbon atom, the thiazolinyl of 2-5 carbon atom or 2-5 independently of one another
The alkenyloxy group of carbon atom；
RingRepresent
M and n represents 1；
Further, the percentage composition proportioning of this liquid-crystal composition is: the compound of described formula I accounts for described liquid-crystal composition gross weight
1-30%；The compound of described formula II accounts for the 1-40% of described liquid-crystal composition gross weight；The compound of described formula Ш
Account for the 1-30% of described liquid-crystal composition gross weight；The compound of described general formulae IV accounts for the 1-of described liquid-crystal composition gross weight
30%；The compound of described formula V accounts for the 1-60% of described liquid-crystal composition gross weight；And described formula VI-1, VI-2 and/
Or the compound of VI-3 accounts for the 1-15% of described liquid-crystal composition gross weight.
Liquid-crystal composition the most according to claim 1, it is characterised in that the compound of described formula I accounts for described liquid crystal group
The 5-20% of compound gross weight；The compound of described formula II accounts for the 5-30% of described liquid-crystal composition gross weight；Described formula
The compound of Ш accounts for the 5-25% of described liquid-crystal composition gross weight；It is total that the compound of described general formulae IV accounts for described liquid-crystal composition
The 5-25% of weight；The compound of described formula V accounts for the 15-50% of described liquid-crystal composition gross weight；And described formula VI-
1, the compound of VI-2 and/or VI-3 accounts for the 3-10% of described liquid-crystal composition gross weight.
Liquid-crystal composition the most according to claim 2, it is characterised in that compound choosing freely followingization of described formula I
The compound of one or more in the group of compound composition:
Liquid-crystal composition the most according to claim 2, it is characterised in that compound choosing freely followingization of described formula II
The compound of one or more in the group of compound composition:
Liquid-crystal composition the most according to claim 2, it is characterised in that compound choosing freely followingization of described formula Ш
The compound of one or more in the group of compound composition:
Liquid-crystal composition the most according to claim 2, it is characterised in that compound choosing freely followingization of described general formulae IV
The compound of one or more in the group of compound composition:
Liquid-crystal composition the most according to claim 2, it is characterised in that compound choosing freely followingization of described formula V
The compound of one or more in the group of compound composition:
8. a liquid crystal display device, comprises the liquid-crystal composition according to any one of claim 1-7.
9. liquid crystal display device as claimed in claim 8, it is characterised in that described liquid crystal display device may be used for IPS mould
Formula, VA pattern, PS-VA pattern, PALC pattern, FFS mode or ecb mode.
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| JP5359016B2 (en) * | 2008-05-08 | 2013-12-04 | Ｊｎｃ株式会社 | Liquid crystal composition and liquid crystal display element |
| US8398887B2 (en) * | 2009-06-03 | 2013-03-19 | Yantai Valiant Fine Chemicals Co., Ltd. | Liquid crystal compounds of butylenes |
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| CN101679867A (en) * | 2007-03-22 | 2010-03-24 | 智索株式会社 | Liquid-crystal composition and liquid-crystal display element |
| JP2011046648A (en) * | 2009-08-27 | 2011-03-10 | Dic Corp | Difluorobenzene derivative and liquid crystal composition containing the same |
| JP2012097222A (en) * | 2010-11-04 | 2012-05-24 | Dic Corp | Nematic liquid crystal composition and liquid crystal display element using the same |
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Address after: 212212 Yangtze River bridge, Jiangsu, Yangzhong, Yangzhong on the eastern side of the road Patentee after: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. Address before: 212212 Yangtze River bridge, Jiangsu, Yangzhong, Yangzhong on the eastern side of the road Patentee before: Jiangsu Hecheng Display Technology Co.,Ltd. |
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| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 2/F, Sino Japan Cooperation Innovation Park, No. 16 Zidan Road, Qinhuai District, Nanjing, Jiangsu Province, 210014 Patentee after: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. Address before: 212212 East Side of Yangzhong Yangtze River Bridge, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU HECHENG DISPLAY TECHNOLOGY Co.,Ltd. |