CN105670649B - A kind of liquid-crystal composition and its application with high transmittance - Google Patents
A kind of liquid-crystal composition and its application with high transmittance Download PDFInfo
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- 0 CC1C(F)=CC(c(cc2)ccc2O*)=CCC1c(cc1)ccc1F Chemical compound CC1C(F)=CC(c(cc2)ccc2O*)=CCC1c(cc1)ccc1F 0.000 description 2
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/0403—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit the structure containing one or more specific, optionally substituted ring or ring systems
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- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K2019/0444—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group
- C09K2019/0466—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit characterized by a linking chain between rings or ring systems, a bridging chain between extensive mesogenic moieties or an end chain group the linking chain being a -CF2O- chain
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Abstract
The present invention relates to a kind of high transmittance liquid-crystal composition and its application.The liquid-crystal composition includes the compound representated by formula I formulas V.Wherein, formula I and general formula II are as follows.Liquid-crystal composition provided by the present invention significantly reduces the ε of liquid-crystal composition∥/ε⊥(ratio of parallel dielectric and vertical dielectric), serve the effect of good lifting transmitance.Exactly liquid-crystal composition provided by the present invention has big vertical dielectric, and then has high transmitance.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, specifically a kind of nematic phase liquid crystal composition, belong to liquid crystal material
And its application field.
Background technology
At present, LCD product technologies are ripe, successfully solve the technologies such as visual angle, resolution ratio, color saturation and brightness
Problem, its display performance is already close to or more than CRT monitor.Large scale and small-medium size LCD are gradual in respective field
Occupy the dominant position of flat-panel monitor.Liquid crystal belongs to passive luminescence display, that is to say, that what liquid crystal panel played is photoswitch
Effect, light by transmitance after liquid crystal panel be 6% or so, in order to lift brightness, it is necessary to strengthen backlight illumination, Jin Erxu
More electric energy are consumed to be used to lift backlight illumination.This greatly improves the cost of backlight.So lifting liquid crystal panel is saturating
Crossing rate turns into the difficult point of current liquid crystal display.
Specifically, for IPS (being changed in face) and FFS (fringing field effect) mode display, liquid-crystal composition is reduced
ε∥/ε⊥(ratio of parallel dielectric and vertical dielectric) can effectively lift the transmitance of liquid crystal display.
The content of the invention
Liquid-crystal composition provided by the present invention significantly reduces the ε of liquid-crystal composition∥/ε⊥(parallel dielectric with it is vertical
The ratio of dielectric), serve the good effect for lifting transmitance.Exactly liquid-crystal composition provided by the present invention has big
Vertical dielectric, and then there is high transmitance.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of high transmittance liquid-crystal composition, its feature are：Including at least the compound representated by a kind of formula I：
And the compound representated by least one formula II：
And the compound representated by least one general formula III：
A kind of and compound representated by including at least formula IV：
And the compound representated by least one formula V：
Wherein, R1Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can be by O, S or CH=CH
Substituted；N represents 0 or 1；
R2、R3C is represented independently of one another1~C12Straight chained alkyl, alkoxy or C2~C12Straight-chain alkenyl；
R4、R5C is represented independently of one another1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can be by O, S
Or CH=CH is substituted；
R6Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
R7Represent C1~C12Straight chained alkyl；
R8Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
A, B, C represent trans 1,4- cyclohexyl or 1,4- phenylenes independently of one another；
D represents trans 1,4- cyclohexyl or 1,4- phenylenes；
The liquid-crystal composition includes the component of following mass percent：
(1), the compound representated by 5~30% formula I；
(2), the compound representated by 3~30% formula II；
(3), the compound representated by 20~70% general formula III；
(4), 3~25% while IV representated by compound；
(5), the compound representated by 3~25% formula V.
Compound representated by formula I provided by the invention is to contain 2- methyl -3,4,5- trifluoro-benzenes structure and difluoro first
The polar compound of epoxide bridged bond, the structure have big dielectric anisotropy.
Specifically, the compound representated by formula I is selected from the one or more of the compound representated by Formulas I-A~Formulas I-B：
Wherein, R1Represent C1~C7Straight chained alkyl.
Preferably, the compound representated by formula I is selected from the one or more of the compound representated by Formulas I A1~Formulas I B4：
Compound representated by formula II provided by the invention contains 2,3- difluorobenzene structures, and the structure has greatly vertical
Dielectric, specifically, the compound representated by the formula II is selected from the one or more of following compound：
Wherein, R2Represent C1~C7Straight chained alkyl, R3Represent C1~C7Straight chained alkyl or unbranched alkoxy.
Preferably, the compound representated by formula II be selected from Formula II A1~Formula II B20 representated by compound one kind or
It is several：
Compound twin nuclei representated by general formula III provided by the invention, the structure have low rotary viscosity, specifically
, the compound representated by the general formula III is selected from the one or more of following compound：
Wherein, R4Represent C1~C7Straight chained alkyl；R5Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7's
Straight-chain alkenyl.
Preferably, the compound representated by general formula III is selected from the compound representated by formula III-A-1~formula III-C-24
It is one or more of：
Compound representated by formula IV is selected from the one or more of the compound representated by formula IV A, formula IV B：
Wherein, R6Represent C2~C7Straight chained alkyl or straight-chain alkenyl；R7Represent C1~C7Straight chained alkyl.
Preferably, one or more of the compound representated by formula IV in formula IV A1~formula IV B22 structures：
Compound representated by formula V provided by the invention is fluoro terphenyl structure, specifically, formula V institute's generations
The compound of table is selected from the one or more of following compound：
Wherein R8Represent C2~C7Straight chained alkyl, K represents H or CH3。
Preferably, one or more of the compound representated by formula V in Formula V A-1~Formula V B-2：
Preferably, liquid-crystal compounds provided by the present invention includes the component of following mass percent：
(1), the compound representated by 5~20% formula I；
(2), the compound representated by 5~20% formula II；
(3), the compound representated by 40~60% general formula III；
(4), 5~20% while IV representated by compound；
(5), the compound representated by 4~20% formula V.
It is highly preferred that liquid-crystal compounds provided by the present invention includes the component of following mass percent：
(1), the compound representated by 8~18% formula I；
(2), the compound representated by 6~19% formula II；
(3), the compound representated by 52~58% general formula III；
(4), 6~19% while IV representated by compound；
(5), the compound representated by 5~15% formula V.
It is particularly preferred that liquid-crystal compounds provided by the present invention includes the component of following mass percent：
(1), the compound representated by 8~11% formula I；
(2), the compound representated by 10~14% formula II；
(3), the compound representated by 56~58% general formula III；
(4), 11~15% while IV representated by compound；
(5), the compound representated by 6~9% formula V.
Liquid-crystal composition provided by the present invention increases the vertical dielectric of liquid-crystal composition by adding class ii compound,
Dielectric anisotropic is lifted by compound I, and then obtains the liquid-crystal composition with big vertical dielectric, lifts liquid crystal
Show device transmitance.By the optimum organization of each component, and then obtain the liquid-crystal composition of high transmittance with fast-response.
Liquid-crystal composition of the present invention has big vertical dielectric constant, and then is situated between with low parallel dielectric with vertical
The ratio of electric constant.
The preparation method of liquid-crystal composition of the present invention can be changed two or more using conventional method without specifically limited
Compound mixing is produced, such as by mixing different component and method soluble in one another preparation at high temperature, wherein, by liquid crystal group
Compound is dissolved in the solvent for the compound and mixed, and then distills out the solvent under reduced pressure；It is or of the present invention
Liquid-crystal composition can be prepared conventionally, and the wherein less component of content is such as dissolved in into content at a higher temperature
In larger key component, or each affiliated component dissolved in organic solvent, such as acetone, chloroform or methanol then will be molten
Liquid mixing obtains after removing solvent.
The present invention also provides application of the above-mentioned liquid-crystal composition in IPS or FFS mode display.It is in IPS or FFS moulds
Use in formula display can be obviously improved the transmitance of liquid crystal display, effectively improve display effect and reduce energy consumption.
Brief description of the drawings
Fig. 1 is the transmitance simulation curve figure of embodiment 1 and comparative example 1.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
Unless otherwise indicated, percentage is weight percentage in the present invention；Temperature unit is degree Celsius；△ n represent optics
Anisotropy (25 DEG C)；ε∥And ε⊥Parallel and vertical dielectric constant (25 DEG C, 1000Hz) is represented respectively；△ ε represent dielectric respectively to
Different in nature (25 DEG C, 1000Hz)；γ 1 represents rotary viscosity (mPa.s, 25 DEG C)；Cp represents the clearing point (DEG C) of liquid-crystal composition；
K11、K22、K33Splay, distortion and bend elastic constant (pN, 25 DEG C) are represented respectively.
In following embodiment, unit structure code shown in table 1 represents in liquid-crystal compounds.
Table 1：The group structure code of liquid-crystal compounds
By taking following compound structure as an example：
It is expressed as：4CDUQKF
It is expressed as：5CCPUF
In following embodiment, the preparation of liquid-crystal composition uses heat of solution method, comprises the following steps：Pressed with balance
Percentage by weight weighs liquid-crystal compounds, wherein addition sequence is weighed without particular requirement, generally with liquid-crystal compounds fusing point by height
Mixing is weighed successively to low order, heating stirring causes each component to melt uniform then filtered, revolving at 60~100 DEG C,
Finally encapsulate and produce target sample.
In following embodiment, the performance parameter of the weight percent of each component when liquid-crystal composition is shown in liquid-crystal composition
Following table.
Embodiment 1
Table 2：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 2
Table 3：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 3
Table 4：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 4
Table 5：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 5
Table 6：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 6
Table 7：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 7
Table 8：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 8
Table 9：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 9
Table 10：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 10
Table 11：The weight percent of each component when performance parameter in liquid-crystal composition
Embodiment 11
Table 12：The weight percent of each component when performance parameter in liquid-crystal composition
Comparative example 1
Table 13：The weight percent of each component when performance parameter in liquid-crystal composition
Compared with embodiment 1 is collected with each performance parameter value of the gained liquid-crystal composition of comparative example 1, referring to table 14.
Table 14：The performance parameter of liquid-crystal composition compares
| Δn | ε∥ | ε⊥ | Δε | Cp | ε∥/ε⊥ | |
| Embodiment 1 | 0.103 | 5.9 | 3.4 | +2.5 | 80 | 1.735 |
| Comparative example 1 | 0.097 | 5.1 | 2.6 | +2.5 | 78 | 1.962 |
Through relatively understanding：Compared with comparative example 1, the liquid-crystal composition that embodiment 1 provides has low parallel dielectric with hanging down
The ratio of straight dielectric, so with higher transmitance.Equally, empirical tests, the liquid-crystal composition that embodiment 2-11 is provided are put down
The ratio of row dielectric and vertical dielectric is also below comparative example 1.
Transmitance is carried out to embodiment 1 and comparative example 1 to simulate to obtain data below table 15：
The embodiment 1 of table 15. is compared with the transmitance of comparative example 1
| Embodiment 1 | Comparative example 1 | |
| Transmitance % | 0.28672 | 0.27165 |
Embodiment 1 lifts 5.5% or so relative to the transmitance of comparative example 1.Its simulation curve is as shown in Figure 1.Pass through simultaneously
Checking, the transmitance for the liquid-crystal composition that embodiment 2-11 is provided are lifted between 3-6% compared to the transmitance of comparative example 1.
As seen from the above embodiment, liquid-crystal composition provided by the present invention has big vertical dielectric, and then with more
Low parallel dielectric and the ratio of vertical dielectric, further there is higher transmitance.Therefore, liquid crystal group provided by the present invention
IPS the or FFS type TFT liquid crystal display devices that compound is applied to, the transmitance of liquid crystal display can be obviously improved, reduce backlight
The energy loss in source, especially suitable for fast-response FFS type TV liquid crystal displays.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (9)
1. a kind of high transmittance liquid-crystal composition, it is characterised in that including at least the compound representated by a kind of formula I：
And the compound representated by least one formula II：
And the compound representated by least one general formula III：
A kind of and compound representated by including at least formula IV：
And the compound representated by least one formula V：
Wherein, R1Represent C1~C12Straight chained alkyl, wherein one or more non-conterminous CH2It can be taken by O, S or CH=CH
Generation；N represents 0 or 1；
R2、R3C is represented independently of one another1~C12Straight chained alkyl, alkoxy or C2~C12Straight-chain alkenyl；
R4、R5C is represented independently of one another1~C12Straight chained alkyl, wherein one or more non-conterminous CH2Can be by O, S or CH
=CH is substituted；
R6Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
R7Represent C1~C12Straight chained alkyl；
R8Represent C1~C12Straight chained alkyl or C2~C12Straight-chain alkenyl；
A, B, C represent trans 1,4- cyclohexyl or 1,4- phenylenes independently of one another；
D represents trans 1,4- cyclohexyl or 1,4- phenylenes；
The liquid-crystal composition includes the component of following mass percent：
(1), the compound representated by 8~18% formula I；
(2), the compound representated by 6~19% formula II；
(3), the compound representated by 52~58% general formula III；
(4), 6~19% while IV representated by compound；
(5), the compound representated by 5~15% formula V.
2. liquid-crystal composition according to claim 1, it is characterised in that the compound representated by the formula I is selected from formula
The one or more of compound representated by I-A~Formulas I-B：
Wherein, R1Represent C1~C7Straight chained alkyl.
3. liquid-crystal composition according to claim 1, it is characterised in that the compound representated by the formula II is selected from such as
The one or more of lower compound：
Wherein, R2Represent C1~C7Straight chained alkyl, R3Represent C1~C7Straight chained alkyl or unbranched alkoxy.
4. liquid-crystal composition according to claim 2, it is characterised in that the compound representated by the formula II is selected from such as
The one or more of lower compound：
Wherein, R2Represent C1~C7Straight chained alkyl, R3Represent C1~C7Straight chained alkyl or unbranched alkoxy.
5. according to any described liquid-crystal compositions of claim 1-4, it is characterised in that the chemical combination representated by the general formula III
Thing is selected from the one or more of following compound：
Wherein, R4Represent C1~C7Straight chained alkyl；R5Represent C1~C7Straight chained alkyl, unbranched alkoxy or C2~C7Straight chain
Alkenyl.
6. according to any described liquid-crystal compositions of claim 1-4, it is characterised in that the compound representated by the formula IV
One or more selected from the compound representated by formula IV A, formula IV B：
Wherein, R6Represent C2~C7Straight chained alkyl or straight-chain alkenyl；R7Represent C1~C7Straight chained alkyl.
7. according to any described liquid-crystal compositions of claim 1-4, it is characterised in that the compound representated by the formula V
One or more selected from following compound：
Wherein R8Represent C2~C7Straight chained alkyl, K represents H or CH3。
8. according to any described liquid-crystal compositions of claim 1-4, it is characterised in that include the group of following mass percent
Point：
(1), the compound representated by 8~11% formula I；
(2), the compound representated by 10~14% formula II；
(3), the compound representated by 56~58% general formula III；
(4), 11~15% while IV representated by compound；
(5), the compound representated by 6~9% formula V.
9. application of any liquid-crystal compositions of claim 1-8 in IPS or FFS mode display.
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| KR20170088297A (en) * | 2016-01-22 | 2017-08-01 | 주식회사 동진쎄미켐 | Liquid crystal composition |
| CN108659861A (en) * | 2017-03-31 | 2018-10-16 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application with high transmittance |
| CN108531194B (en) * | 2018-03-30 | 2021-08-03 | 北京八亿时空液晶科技股份有限公司 | Positive and negative mixed liquid crystal composition and application thereof |
| CN108531195A (en) * | 2018-03-30 | 2018-09-14 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition of high transmittance and its application |
| CN110628439A (en) * | 2018-06-22 | 2019-12-31 | 北京八亿时空液晶科技股份有限公司 | High-performance liquid crystal compound and preparation method and application thereof |
| CN110511766A (en) * | 2019-07-29 | 2019-11-29 | 北京八亿时空液晶科技股份有限公司 | A kind of high transmittance liquid-crystal composition containing single oxygen helerocyclics and its application |
| CN110484280A (en) * | 2019-07-29 | 2019-11-22 | 北京八亿时空液晶科技股份有限公司 | A kind of high transmittance liquid-crystal composition and its application |
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| DE102004012970A1 (en) * | 2003-04-11 | 2004-10-28 | Merck Patent Gmbh | Liquid crystalline media having high voltage holding ratio after UV and/or thermal stress, for use in electro-optical displays, containing bis-phenyl compound and UV-stabilizer |
| GB201301786D0 (en) * | 2012-02-15 | 2013-03-20 | Merck Patent Gmbh | Liquid-crystalline medium |
| CN103740377B (en) * | 2013-12-27 | 2015-05-20 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition and application thereof |
| CN104610983B (en) * | 2015-01-21 | 2017-01-11 | 北京八亿时空液晶科技股份有限公司 | Liquid crystal composition containing 2-methyl-3,4,5-trifluorobenzene liquid crystal compound and application of liquid crystal composition |
| CN104673323B (en) * | 2015-02-04 | 2016-09-21 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition containing 2-methyl-3,4,5-trifluoro-benzene liquid-crystal compounds and application thereof |
| CN104830349B (en) * | 2015-03-13 | 2017-03-29 | 北京八亿时空液晶科技股份有限公司 | Liquid-crystal composition containing 2 methyl, 3,4,5 trifluoro-benzene liquid-crystal compoundss and its application |
| CN104774623B (en) * | 2015-03-13 | 2017-03-01 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application |
| CN106554783B (en) * | 2015-09-25 | 2019-05-21 | 北京八亿时空液晶科技股份有限公司 | A kind of liquid-crystal composition and its application with high transmittance |
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Effective date of registration: 20180821 Address after: Block B2-36-01, East District, New Petrochemical Material Science and Technology Industrial Base, Fengjie District, Yanshan District, Fangshan District, Beijing Patentee after: Beijing Bayi Space LCD Materials Technology Co., Ltd. Address before: 102205 Yang Fang village, Changping District, Beijing Patentee before: Beijing Jinxunyangguang Electronic Materials Technology Co., Ltd. |