CN103361077B - Liquid crystal composition and display comprising same - Google Patents
Liquid crystal composition and display comprising same Download PDFInfo
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- CN103361077B CN103361077B CN201310260545.1A CN201310260545A CN103361077B CN 103361077 B CN103361077 B CN 103361077B CN 201310260545 A CN201310260545 A CN 201310260545A CN 103361077 B CN103361077 B CN 103361077B
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- 0 *C=CCCC(*C=C1)=CC=C1c1ccc(*)cc1 Chemical compound *C=CCCC(*C=C1)=CC=C1c1ccc(*)cc1 0.000 description 1
- MTUMCFJCCHMKBC-UHFFFAOYSA-N CCCc(cc1)ccc1C1=CCC(C)=CC=C1 Chemical compound CCCc(cc1)ccc1C1=CCC(C)=CC=C1 MTUMCFJCCHMKBC-UHFFFAOYSA-N 0.000 description 1
- SYQBRDMODNPSRQ-UHFFFAOYSA-N Cc(cc1)ccc1C1=CC=CC=C(CCCC=C)C=C1 Chemical compound Cc(cc1)ccc1C1=CC=CC=C(CCCC=C)C=C1 SYQBRDMODNPSRQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a liquid crystal composition which has negative dielectric anisotropy. The liquid crystal composition comprises a compound of a general formula I accounting for 1-30% of the total weight of the liquid crystal composition, and 15-70% of a compound of a general formula II-1 and/or II-2, and 10-55% of a compound of free general formula III. The liquid crystal composition provided by the invention can be used for a liquid crystal element, and has properties of low viscosity, high response speed, excellent low-temperature reliability and the like. The liquid crystal composition provided by the invention is especially suitable for liquid crystal displays such as VA, PSVA (Polymer Stabilize Vertical Align), PS-IPS and the like. The invention also provides a liquid crystal display comprising the liquid crystal composition.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition of negative dielectric anisotropic, 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 display device with clock and watch, electronic calculator for representative be applied to home-use various electrical equipment, mensuration and, instrument panel for motor vehicle, word processor, electronic dictionary, printer, computer, TV etc.As liquid-crystal display mode, its representational mode can enumerate TN(twisted nematic) type, STN(STN Super TN) type, DS(dynamic light scattering) type, GH(host and guest) type, to switch in IPS(face) type, OCB(optical compensation birefringence) type, the double refraction of ECB(voltage control) type, VA(be vertical orientated) type, CSH(be colored super vertical) type or FLS(Ferroelectric liquid Crystals) etc.In addition, type of drive generally becomes multichannel by static drive in the past and drives, simple matrix mode.Recently by TFT(thin film transistor) or TFD(thin film diode) etc. active matrix (hereinafter referred to as the AM) mode that drives become main flow.
In these display modes, the TN type that IPS type, ECB type, VA type or CSH type equal extensively to adopt now, STN type are different, have that to employ dielectric constant anisotropy be the such feature of negative liquid crystal material.The VA type wherein particularly utilizing AM to drive is presented at a high speed, requires the display element of wide viewing angle, and the application aspect of such as TV etc. is expected now the most.
Liquid crystal material for display modes such as VA types requires low voltage drive, high-speed response, wide operating temperature range and good low-temperature stability.That is, dielectric constant anisotropy is negative, low viscosity.But do not have a kind of material can carry out satisfied such performance as single compound at present.Negative liquid crystal combination species disclosed in China Patent Publication No. CN101407719A, specific refractory power is .186, and its viscosity is 49.1(mPas), but threshold value is low not.Therefore we need the relation between balance parameters, as on the basis selecting suitable specific refractory power and dielectric, reduce the viscosity of system, realize fast-response.
Summary of the invention
The object of this invention is to provide a kind of liquid-crystal composition with negative dielectric anisotropic, this liquid-crystal composition has the performances such as suitable negative dielectric anisotropic, lower viscosity, fast response time and good Low-Temperature Reliability.
One aspect of the present invention provides a kind of specific inductivity to be negative liquid-crystal composition, and described liquid-crystal composition comprises:
Account for the compound of the formula I of described liquid-crystal composition gross weight 1-30%
Account for the compound be selected from by general formula II-1 and/or general formula II-2 of described liquid-crystal composition gross weight 15-70%
and
Account for the compound of the general formula Ш of described liquid-crystal composition gross weight 10-55%
Wherein,
R
1represent that H or carbonatoms are the alkyl of 1-3 independently of one another;
R
2, R
3, R
4, R
5and R
6identical 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 invention, the compound of preferred described formula I is selected from one or more of compound in the group be made up of following compound:
and
In some embodiments of the invention, the compound of preferred described general formula II-1 is selected from one or more of compound in the group be made up of following compound:
and
and
The compound of preferred described general formula II-2 is selected from one or more of compound in the group be made up of following compound:
and
In some embodiments of the invention, the compound of preferred described general formula Ш is selected from one or more of compound in the group be made up of following compound:
and
Liquid-crystal composition of the present invention also comprises:
Account for the compound of the general formulae IV of described liquid-crystal composition gross weight 0-20%
and
Account for the compound of the general formula V of described liquid-crystal composition gross weight 0-25%
Wherein,
R
7, R
8, R
9and R
10identical 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;
be selected from by
with
the group of composition, wherein
upper one or more H can be replaced by F.
In embodiments of the invention, the compound of preferred described formula I accounts for the 3-20% of described liquid-crystal composition gross weight; The compound of described general formula II-1 and/or general formula II-2 accounts for the 25-60% of described liquid-crystal composition gross weight; The compound of described general formula Ш accounts for the 15-40% of the gross weight of described liquid-crystal composition; The compound of described general formulae IV accounts for the 1-15% of the gross weight of described liquid-crystal composition; And the compound of described general formula V accounts for the 1-20% of the gross weight of described liquid-crystal composition.
In some embodiments of the invention, the compound of preferred described general formulae IV is selected from one or more of compound in the group be made up of following compound:
and
The compound of preferred described general formula V is selected from one or more of compound in the group be made up of following compound:
and
Another aspect of the present invention is to provide the liquid-crystal display comprising liquid-crystal composition of the present invention.
The liquid crystal display device comprising liquid-crystal composition of the present invention is VA, MVA, PVA, PSVA, PSA-VA, PS-IPS or PSA-IPS indicating meter.
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: nCC1OWm, n and m in code represents the C atomicity of left end and right-hand member alkyl respectively, and such as n is " 3 ", namely represents that this alkyl is-C
3h
7; C in code represents cyclohexyl; 1O represents sub-methoxyl group; W represents the fluoro-Isosorbide-5-Nitrae-phenylene of 2,3-bis-.
In following examples, the code name of writing a Chinese character in simplified form of each test event is expressed as:
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.
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 reference examples liquid-crystal composition 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 comparative example 1, from the test data of above embodiment 1,2,3 and 4, liquid-crystal composition provided by the present invention has stable storing under suitable negative dielectric anisotropic, suitable optical anisotropy, lower viscosity, low temperature, and there is response speed faster, be applicable in VA, PSVA or IPS isotype liquid-crystal display.
Claims (8)
1. dielectric constant anisotropy is a negative liquid-crystal composition, and it is made up of following compound:
Account for the compound of the formula I of described liquid-crystal composition gross weight 3-20%
Account for the compound be selected from by general formula II-1 and/or general formula II-2 of described liquid-crystal composition gross weight 25-60%
and
Account for the compound of the general formula Ш of described liquid-crystal composition gross weight 15-40%
Wherein,
R
1represent that H or carbonatoms are the alkyl of 1-3 independently of one another;
R
2, R
3, R
4, R
5and R
6identical 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;
Account for the compound of the general formulae IV of described liquid-crystal composition gross weight 1-15%
and
Account for the compound of the general formula V of described liquid-crystal composition gross weight 1-20%
Wherein,
R
7, R
8, R
9and R
10identical 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;
be selected from by
with
the group of composition, wherein
upper one or more H can be replaced by F.
2. liquid-crystal composition according to claim 1, 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:
and
3. liquid-crystal composition according to claim 1, 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:
and
and
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:
and
4. liquid-crystal composition according to claim 1, is characterized in that, the compound of described general formula Ш is selected from one or more of compound in the group be made up of following compound:
and
5. liquid-crystal composition according to claim 1, is characterized in that, the compound of described general formulae IV is selected from one or more of compound in the group be made up of following compound:
and
The compound of described general formula V is selected from one or more of compound in the group be made up of following compound:
and
6. liquid-crystal composition according to claim 5, is characterized in that, described liquid-crystal composition comprises:
Account for the compound V-6 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-1-7 of described liquid-crystal composition gross weight 10%;
Account for the compound V-5 of described liquid-crystal composition gross weight 7%;
Account for the compound ii-2-4 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-2-6 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-1-6 of described liquid-crystal composition gross weight 8%;
Account for the compound Ш-1 of described liquid-crystal composition gross weight 20%;
Account for the compound Ш-2 of described liquid-crystal composition gross weight 8%;
Account for the compound Ш-3 of described liquid-crystal composition gross weight 4%;
Account for the compounds Ⅳ-2 of described liquid-crystal composition gross weight 2%;
Account for the compounds Ⅳ-1 of described liquid-crystal composition gross weight 7%;
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 4%; And
Account for the chemical compounds I-1 of described liquid-crystal composition gross weight 5%,
Or described liquid-crystal composition comprises:
Account for the compounds Ⅳ-7 of described liquid-crystal composition gross weight 5%;
Account for the compound V-3 of described liquid-crystal composition gross weight 8%;
Account for the compound V-4 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-1-7 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-1-9 of described liquid-crystal composition gross weight 3%;
Account for the compound ii-2-4 of described liquid-crystal composition gross weight 10%;
Account for the compound ii-2-6 of described liquid-crystal composition gross weight 10%;
Account for the compound Ш-1 of described liquid-crystal composition gross weight 17%;
Account for the compound Ш-3 of described liquid-crystal composition gross weight 12%;
Account for the compounds Ⅳ-4 of described liquid-crystal composition gross weight 5%;
Account for the chemical compounds I-1 of described liquid-crystal composition gross weight 8%; And
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 5%,
Or described liquid-crystal composition comprises:
Account for the compounds Ⅳ-7 of described liquid-crystal composition gross weight 2%;
Account for the compound V-3 of described liquid-crystal composition gross weight 6%;
Account for the compound V-4 of described liquid-crystal composition gross weight 6%;
Account for the compound V-7 of described liquid-crystal composition gross weight 6%;
Account for the compound ii-1-7 of described liquid-crystal composition gross weight 8%;
Account for the compound ii-1-9 of described liquid-crystal composition gross weight 5%;
Account for the compound ii-2-4 of described liquid-crystal composition gross weight 5%;
Account for the compound ii-2-6 of described liquid-crystal composition gross weight 6%;
Account for the compound ii-2-7 of described liquid-crystal composition gross weight 6%;
Account for the compound Ш-1 of described liquid-crystal composition gross weight 24%;
Account for the compound Ш-3 of described liquid-crystal composition gross weight 12%;
Account for the compounds Ⅳ-4 of described liquid-crystal composition gross weight 4%;
Account for the compounds Ⅳ-5 of described liquid-crystal composition gross weight 4%;
Account for the chemical compounds I-1 of described liquid-crystal composition gross weight 3%; And
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 3%,
Or described liquid-crystal composition comprises:
Account for the compounds Ⅳ-7 of described liquid-crystal composition gross weight 5%;
Account for the compound V-3 of described liquid-crystal composition gross weight 6%;
Account for the compound V-4 of described liquid-crystal composition gross weight 6%;
Account for the compound V-7 of described liquid-crystal composition gross weight 6%;
Account for the compound ii-1-7 of described liquid-crystal composition gross weight 9%;
Account for the compound ii-1-9 of described liquid-crystal composition gross weight 4%;
Account for the compound ii-2-4 of described liquid-crystal composition gross weight 7%;
Account for the compound ii-2-6 of described liquid-crystal composition gross weight 6%;
Account for the compound ii-2-7 of described liquid-crystal composition gross weight 5%;
Account for the compound Ш-1 of described liquid-crystal composition gross weight 17%;
Account for the compound Ш-3 of described liquid-crystal composition gross weight 9%;
Account for the compounds Ⅳ-4 of described liquid-crystal composition gross weight 5%;
Account for the chemical compounds I-1 of described liquid-crystal composition gross weight 10%; And
Account for the chemical compounds I-2 of described liquid-crystal composition gross weight 5%.
7. a liquid crystal display device, described liquid crystal display device comprises the liquid-crystal composition described in any one of claim 1 to 6.
8. liquid crystal display device according to claim 7, is characterized in that, described liquid-crystal display is VA, MVA, PVA, PSVA, PSA-VA, PS-IPS or PSA-IPS indicating meter.
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| CN106537241B (en) * | 2014-07-29 | 2020-08-11 | Dic株式会社 | Liquid crystal composition and liquid crystal display element |
| CN105441085A (en) * | 2014-08-26 | 2016-03-30 | 江苏和成显示科技股份有限公司 | A liquid crystal composition and a liquid crystal display element containing the same |
| CN105368464B (en) * | 2014-09-02 | 2020-09-08 | 江苏和成显示科技有限公司 | Liquid crystal composition having negative dielectric anisotropy and display device thereof |
| TW201723153A (en) * | 2015-11-11 | 2017-07-01 | Dainippon Ink & Chemicals | Composition, and liquid crystal display element using same |
| CN108239540B (en) * | 2016-12-23 | 2022-02-25 | 江苏和成显示科技有限公司 | Liquid crystal composition and display device thereof |
| CN109207169B (en) | 2017-06-30 | 2022-02-22 | 江苏和成显示科技有限公司 | Liquid crystal composition and application thereof |
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| JP4802463B2 (en) * | 2004-07-30 | 2011-10-26 | Ｄｉｃ株式会社 | Nematic liquid crystal composition and liquid crystal display device using the same |
| TWI378139B (en) * | 2005-01-27 | 2012-12-01 | Dainippon Ink & Chemicals | A difluorobenzene derivative and a nematic liquid crystal composition using the same |
| KR101572257B1 (en) * | 2006-08-25 | 2015-11-26 | 메르크 파텐트 게엠베하 | Liquid crystalline medium |
| WO2010032587A1 (en) * | 2008-09-17 | 2010-03-25 | チッソ株式会社 | Liquid crystal composition and liquid crystal display element |
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