CN103205265B - Liquid crystal composition and liquid crystal display device - Google Patents
Liquid crystal composition and liquid crystal display device Download PDFInfo
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- CN103205265B CN103205265B CN201310082451.XA CN201310082451A CN103205265B CN 103205265 B CN103205265 B CN 103205265B CN 201310082451 A CN201310082451 A CN 201310082451A CN 103205265 B CN103205265 B CN 103205265B
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Abstract
The invention provides a positive dielectric anisotropic liquid crystal composition and applications thereof. The liquid crystal composition comprises at least one compound of the general formular (I) as a first component and at least one compound of the general formula (II) as a second component. The content of the first component is not more than 30% of the total mass of the liquid crystal composition. The liquid crystal composition has low rotary viscosity and high response speed. Besides, the invention further provides a liquid crystal display with the liquid crystal composition.
Description
Technical field
The present invention relates to a kind of liquid-crystal composition, particularly about a kind of liquid-crystal composition and application thereof with low rotary viscosity, fast response speed.
Background technology
Liquid crystal material is at a certain temperature, has not only had the mobility of liquid but also has had the mixture of anisotropic organic bar-shaped micromolecular compound of crystal.Liquid crystal material is mainly used as the dielectric medium in indicating meter, and its reason is that the optical property of this class material can change by the voltage applying.Classify by liquid-crystal display mode, liquid-crystal composition can be divided into the types such as twisted nematic (TN type), super-twist nematic (STN type), film transistor type (TFT type), guest-host type (GH type), dynamic scattering mode (DS type), and wherein modal display element is based on Schadt-Helfrich effect and has twisted nematic type structure.In addition, also there is the liquid crystal cell of the electric field operation for being parallel to substrate and liquid crystal face, for example, in IPS(face, switch) liquid crystal cell.
For liquid-crystal display, the liquid crystalline cpd and the liquid crystal media that possess good chemistry and thermostability, suitable optical anisotropy, faster response speed and the good stability to electric field and electromagnetic radiation meet current needs.In order to expand the working range of liquid-crystal display, liquid crystal display material also needs there is wide nematic temperature range, all can keep the good requirement showing to meet in various environment.
For meeting the processing requirement of liquid crystal display device, need liquid crystal material to there is extensive and multiple performance perameter, and the liquid crystal material of practicality is all mixed liquid crystal material at present, but the various performance parameters optimization of mixed liquid crystal material is contradiction, mutually restriction and impact each other each other, there is certain difficulty meeting aspect processing performance requirement in it.In liquid-crystal composition as described in EP0667555, EP0673986, DE19528106, DE19528107, WO962851, significant shortcoming is to have the longer time of response.
Therefore, need to there is the novel liquid crystalline compositions of performance of improvement, and there is the liquid-crystal composition of low rotary viscosity, fast time of response, particularly important for many type useds.
Summary of the invention
The object of the invention is to by the optimum combination to various liquid-crystal compositions and optimum ratio, a kind of liquid-crystal composition with low rotary viscosity, fast response speed is provided, and described liquid-crystal composition can not show the shortcoming of prior art material or at least only in significantly less degree, show above-mentioned shortcoming.
In order to complete foregoing invention object, the invention provides a kind of positive dielectric anisotropy liquid crystal composition, comprising:
As the compound of at least one general formula (I) of the first component
and
As the compound of at least one general formula (II) of second component
Wherein:
The content of the first component is no more than 30% of described liquid-crystal composition gross weight;
R
1, R
2can be identical or different, be independently from each other by C
1～C
7alkyl, C
1～C
7alkoxyl group and C
2～C
7the group of thiazolinyl composition, wherein, described C
1～C
7alkyl in one or more CH
2can be independently of one another by O, S ,-CH=CH-,-C ≡ C-or-COO-replaces, and every two O or S not connected with each other; As described R
2be selected from described C
2～C
7thiazolinyl time, described C
2～C
7thiazolinyl in one or more H can be replaced by F independently of one another;
Z selects free singly-bound ,-CH=CH-,-C ≡ C-,-O-,-COO-,-OCO-,-OCH
2-,-C
2h
4-,-CH
2o-,-OCF
2-and-CF
2the group of O-composition;
X selects free halogen, CN, C
1～C
7alkyl and C
1～C
7the group of alkoxyl group composition, wherein, described C
1～C
7alkyl and C
1～C
7alkoxyl group in one or more H can be replaced by F independently of one another;
L
1, L
2can be identical or different, be H or F independently of one another, wherein, described L
1, L
2in have one at least for F;
can be identical or different, be independently from each other by
with
the group of composition,
choosing freely
the group of composition, wherein, described in
in one or more CH
2can be replaced by O or S independently of one another, described in
in one or more H can be replaced by F independently of one another;
A, b can be identical or different, are 0 or 1 independently of one another.
In embodiments of the invention, preferably, the compound of described general formula (I) accounts for the 5%-25% of described liquid-crystal composition gross weight.
Described R
1, R
2can be identical or different, be independently from each other by C
1～C
5alkyl, C
1～C
5alkoxyl group and C
2～C
5the group of thiazolinyl composition, wherein, described C
1～C
5alkyl in one or more CH
2can be replaced by O or S independently of one another, and every two O or S not connected with each other; As described R
2be selected from described C
2～C
5thiazolinyl time, described C
2～C
5thiazolinyl in one or more H can be replaced by F independently of one another;
Described Z selects free singly-bound ,-COO-,-OCF
2-and-CF
2the group of O-composition;
Described X selects free F, CN, C
1～C
5fluoro-alkyl and C
1～C
5the group of fluoroalkyl composition;
Described
can be identical or different, be independently from each other by
the group of composition, wherein, except above-mentioned definition, described in
can also be
In embodiments of the invention, more preferably, the compound of described general formula (I) is selected from one or more the compound in the group of following compound composition;
One or more compound in the group of the freely following compound composition of compound choosing of described general formula (II):
Liquid-crystal composition provided by the invention, can also comprise one or more compounds that are selected from the chemical combination that meets general formula (III):
Wherein:
R
3, R
4can be identical or different, be independently from each other by C
1～C
7alkyl, C
1～C
7alkoxyl group and C
2～C
7the group of thiazolinyl composition, wherein, described C
1～C
7alkyl in one or more CH
2can be independently of one another by O, S or-OCF
2-replace, and every two O or S not connected with each other; Wherein, except above-mentioned definition, described R
4also can be and be-OCF
3;
be independently from each other by
the group of composition, wherein,
in one or more CH
2can be replaced by O or S independently of one another; When described
for
time, described in
in one or more H can be replaced by F independently of one another;
C is 0 or 1.
In embodiments of the invention, preferably, described R
3, R
4can be identical or different, be independently from each other by C
1～C
5alkyl, C
1～C
5alkoxyl group and C
2～C
5the group of thiazolinyl composition; Wherein, except above-mentioned definition, described R
4also-OCF
3.
In embodiments of the invention, more preferably, the compound of described general formula (III) is selected from one or more the compound in the group of following compound composition:
Another aspect of the present invention is to provide liquid-crystal composition of the present invention in the application of manufacturing in electrooptics device.
Another aspect of the present invention is to provide the electrooptics liquid-crystal display that comprises liquid-crystal composition of the present invention.
The present invention is by above-claimed cpd is carried out to combination experiment, by with the comparison of reference examples, determined the liquid crystal media that comprises above-mentioned liquid-crystal composition, there is low rotary viscosity and shorter time of response.
In the present invention if no special instructions, described ratio is weight ratio, and all temperature are degree celsius temperature, and box that the test of described response time data is selected is thick is 7 μ m.
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 illustrating the present invention, and are not used for limiting the present invention.In the situation that not departing from purport of the present invention or scope, can carry out other combination and various improvement in design of the present invention.
The liquid-crystal display that following embodiment adopts is TN-TFT liquid crystal display, and the thick d=7 μ of box m is made up of parts such as polarizer (polaroid), electrode base boards.This display equipment is normal white mode, and while not having voltage difference to put between row and column electrode, viewer observes white pixel color.Polarizer axes up and down on substrate is 90 degrees to each other angle.Space between two substrates is full of optical liquid crystal material.
For ease of expressing, in following embodiment, the listed coded representation of table 1 for the unit structure of liquid crystalline cpd:
The unit structure code of table 1 liquid crystalline cpd
Taking following structure as example:
Coded representation in table 1 for this structure: can be expressed as 3PTGQP3, and for example:
Can be expressed as nCPTPm, the n in code represents the C atomicity of left end alkyl, and for example n is " 3 ", represents that this alkyl is-C
3h
7; C in code represents cyclohexyl; P in code represents phenylene; T in code represents alkynyl; M in code represents the C atomicity of right-hand member alkyl, and for example m is " 1 ", represents that the alkyl of right-hand member is-CH
3.
In embodiment, the code name of writing a Chinese character in simplified form of each test event is expressed as:
The each composition adopting in following embodiment, synthesize according to known method by present inventor, as be described in document (for example, in classic, such as Houben-Weyl, Methoden der organischen Chemie (organic chemistry method), Georg-Thieme press, Stuttgart).These synthetic technologys are conventional, and each liquid crystalline cpd that obtains meets electrical type compound standard after tested.About the method for introducing target end group, ring structure and conjugated group in starting raw material, be documented in organic synthesis (Organic Syntheses, John Wiley & Sons, Inc), organic reaction (Organic Reactions, John Wiley & Sons, in the publications such as Inc), comprehensive organic synthesis (Comprehensive Organic Synthesis, Pergamon Press), new experimental chemistry lecture (ball is kind).Wherein, in embodiment, the preparation method of indenes lopps compound used is open in CN102477305A.The compound relating in embodiment is the known compound that routinizes, and its preparation method is well known to those skilled in the art.
According to the proportioning of each liquid-crystal composition of following examples regulation, prepare liquid-crystal composition.The preparation of described liquid-crystal composition is to carry out according to the ordinary method of this area, as take the modes such as heating, ultrasonic wave, suspension according to the rules ratio mix make.
Prepare and study the liquid-crystal composition providing in the following example.Composition and its performance parameter test result of each liquid-crystal composition are shown 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 composition formula and test performance thereof
Embodiment 1
Be mixed with liquid-crystal composition of the present invention 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 composition formula and test performance thereof
Embodiment 2
Be mixed with liquid-crystal composition of the present invention 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 composition formula and test performance thereof
Embodiment 1 compared with reference examples, has suitable specific refractory power anisotropy and dielectric anisotropy with 2 liquid-crystal composition, low rotary viscosity, and its advantage is response speed faster, good display effect, is applicable in display device.
Reference examples 2
Be mixed with reference examples 2 liquid-crystal compositions 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 composition formula and test performance thereof
Embodiment 3
Be mixed with liquid-crystal composition of the present invention 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 composition formula and test performance thereof
Embodiment 4
Be mixed with liquid-crystal composition of the present invention 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 composition formula and test performance thereof
The liquid-crystal composition of embodiment 3 and 4 and reference examples 2(PLSCONFM, confirm) compare, there is suitable specific refractory power anisotropy and dielectric anisotropy, low rotary viscosity, its advantage is response speed faster, and good display effect, is applicable in display device.
Claims (10)
1. a positive dielectric anisotropy liquid crystal composition, comprising:
As the compound of at least one general formula (I) of the first component
and
As the compound of at least one general formula (II) of second component
Wherein:
The content of the first component is no more than 30% of described liquid-crystal composition gross weight;
R
1, R
2can be identical or different, be independently from each other by C
1～C
7alkyl, C
1～C
7alkoxyl group and C
2～C
7the group of thiazolinyl composition, wherein, described C
1～C
7alkyl in one or more CH
2can be independently of one another by O, S ,-CH=CH-,-C ≡ C-or-COO-replaces, and every two O or S not connected with each other; As described R
2be selected from described C
2～C
7thiazolinyl time, described C
2～C
7thiazolinyl in one or more H can be replaced by F independently of one another;
Z selects free singly-bound ,-CH=CH-,-C ≡ C-,-O-,-COO-,-OCO-,-OCH
2-,-C
2h
4-,-CH
2o-,-OCF
2-and-CF
2the group of O-composition;
X selects free halogen, CN, C
1～C
7alkyl and C
1～C
7the group of alkoxyl group composition, wherein, described C
1～C
7alkyl and C
1～C
7alkoxyl group in one or more H can be replaced by F independently of one another;
L
1, L
2can be identical or different, be H or F independently of one another, wherein, described L
1, L
2in have one at least for F;
can be identical or different, be independently from each other by
the group of composition,
choosing freely
the group of composition, wherein,
in one or more CH
2can be replaced by O or S independently of one another,
in one or more H can be replaced by F independently of one another;
A, b can be identical or different, are 0 or 1 independently of one another.
2. liquid-crystal composition according to claim 1, is characterized in that, the compound of described general formula (I) accounts for the 5%-25% of described liquid-crystal composition gross weight.
3. liquid-crystal composition according to claim 1, is characterized in that, described R
1, R
2can be identical or different, be independently from each other by C
1～C
5alkyl and C
2～C
5the group of thiazolinyl composition, wherein, described C
1～C
5alkyl in one or more CH
2can be replaced by O or S independently of one another, and every two O or S not connected with each other; As described R
2be selected from described C
2～C
5thiazolinyl time, described C
2～C
5thiazolinyl in one or more H can be replaced by F independently of one another;
Described Z selects free singly-bound ,-COO-,-OCF
2-and-CF
2the group of O-composition;
Described X selects free F, CN, C
1～C
5fluoro-alkyl and C
1～C
5the group of fluoroalkyl composition;
Described
can be identical or different, be independently from each other by
the group of composition; Wherein, except above-mentioned definition, described in
can also be
4. liquid-crystal composition according to claim 3, is characterized in that, the compound of described general formula (I) is selected from one or more the compound in the group of following compound composition;
One or more compound in the group of the freely following compound composition of compound choosing of described general formula (II):
5. liquid-crystal composition according to claim 1, is characterized in that, described liquid-crystal composition can also comprise one or more compounds that are selected from the compound that meets general formula (III):
Wherein:
R
3, R
4can be identical or different, be independently from each other by C
1～C
7alkyl, C
1～C
7alkoxyl group and C
2～C
7the group of thiazolinyl composition, wherein, described C
1～C
7alkyl in one or more CH
2can be replaced by O or S independently of one another, and every two O or S not connected with each other; Wherein, except above-mentioned definition, described R
4can also be-OCF
3;
be independently from each other by
the group of composition; Wherein,
in one or more CH
2can be replaced by O or S independently of one another; When described
for
time, described in
in one or more H can be replaced by F independently of one another;
C is 0 or 1.
6. liquid-crystal composition according to claim 5, is characterized in that, described R
3, R
4can be identical or different, be independently from each other by C
1～C
5alkyl, C
1～C
5alkoxyl group and C
2～C
5the group of thiazolinyl composition; Wherein, except above-mentioned definition, described R
4can also be-OCF
3.
7. liquid-crystal composition according to claim 6, is characterized in that, the compound of described general formula (III) is selected from one or more the compound in the group of following compound composition;
8. according to the liquid-crystal composition described in any one in claim 4 to 7, it is characterized in that, described liquid-crystal composition comprises:
Account for compound III-6 of described liquid-crystal composition gross weight 10%;
Account for chemical compounds I-1 of described liquid-crystal composition gross weight 6%;
Account for chemical compounds I-3 of described liquid-crystal composition gross weight 6%;
Account for compound III-12 of described liquid-crystal composition gross weight 38%;
Account for compound III-13 of described liquid-crystal composition gross weight 4%;
Account for the Compound I I-3 of described liquid-crystal composition gross weight 4%;
Account for compound III-14 of described liquid-crystal composition gross weight 7%;
Account for compound III-17 of described liquid-crystal composition gross weight 7%;
Account for compound III-9 of described liquid-crystal composition gross weight 5%;
Account for the Compound I I-18 of described liquid-crystal composition gross weight 5%;
Account for the Compound I I-20 of described liquid-crystal composition gross weight 4%; And
Account for the Compound I I-21 of described liquid-crystal composition gross weight 4%,
Or described liquid-crystal composition comprises:
Account for compound III-6 of described liquid-crystal composition gross weight 10%;
Account for chemical compounds I-1 of described liquid-crystal composition gross weight 6%;
Account for chemical compounds I-9 of described liquid-crystal composition gross weight 6%;
Account for compound III-12 of described liquid-crystal composition gross weight 38%;
Account for compound III-13 of described liquid-crystal composition gross weight 4%;
Account for the Compound I I-3 of described liquid-crystal composition gross weight 4%;
Account for compound III-14 of described liquid-crystal composition gross weight 7%;
Account for compound III-17 of described liquid-crystal composition gross weight 7%;
Account for compound III-9 of described liquid-crystal composition gross weight 5%;
Account for the Compound I I-18 of described liquid-crystal composition gross weight 5%;
Account for the Compound I I-20 of described liquid-crystal composition gross weight 4%; And
Account for the Compound I I-21 of described liquid-crystal composition gross weight 4%,
Or described liquid-crystal composition comprises:
Account for compound III-1 of described liquid-crystal composition gross weight 8%;
Account for chemical compounds I-1 of described liquid-crystal composition gross weight 5%;
Account for chemical compounds I-3 of described liquid-crystal composition gross weight 5%;
Account for compound III-12 of described liquid-crystal composition gross weight 37%;
Account for compound III-13 of described liquid-crystal composition gross weight 6%;
Account for the Compound I I-12 of described liquid-crystal composition gross weight 3%;
Account for compound III-14 of described liquid-crystal composition gross weight 7%;
Account for compound III-17 of described liquid-crystal composition gross weight 7%;
Account for the Compound I I-6 of described liquid-crystal composition gross weight 6%;
Account for the Compound I I-9 of described liquid-crystal composition gross weight 8%;
Account for the Compound I I-14 of described liquid-crystal composition gross weight 4%; And
Account for the Compound I I-15 of described liquid-crystal composition gross weight 4%,
Or described liquid-crystal composition comprises:
Account for compound III-1 of described liquid-crystal composition gross weight 8%;
Account for chemical compounds I-1 of described liquid-crystal composition gross weight 5%;
Account for chemical compounds I-9 of described liquid-crystal composition gross weight 5%;
Account for compound III-12 of described liquid-crystal composition gross weight 37%;
Account for compound III-13 of described liquid-crystal composition gross weight 6%;
Account for the Compound I I-12 of described liquid-crystal composition gross weight 3%;
Account for compound III-14 of described liquid-crystal composition gross weight 7%;
Account for compound III-17 of described liquid-crystal composition gross weight 7%;
Account for the Compound I I-6 of described liquid-crystal composition gross weight 6%;
Account for the Compound I I-9 of described liquid-crystal composition gross weight 8%;
Account for the Compound I I-14 of described liquid-crystal composition gross weight 4%; And
Account for the Compound I I-15 of described liquid-crystal composition gross weight 4%.
9. the application in manufacture electrooptics device according to the liquid-crystal composition described in any one in claim 1～8.
10. an electrooptics liquid-crystal display, described liquid-crystal display comprises the liquid-crystal composition described in any one in claim 1～8.
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|---|---|---|---|
| CN201310082451.XA CN103205265B (en) | 2013-03-14 | 2013-03-14 | Liquid crystal composition and liquid crystal display device |
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| CN103409146B (en) * | 2013-04-01 | 2015-10-28 | 石家庄诚志永华显示材料有限公司 | For the liquid-crystal composition of driven with active matrix liquid-crystal display |
| CN104371746B (en) * | 2013-08-16 | 2016-05-25 | 江苏和成显示科技股份有限公司 | Liquid-crystal composition and liquid crystal display device |
| CN104513129B (en) * | 2013-09-30 | 2016-06-08 | 江苏和成新材料有限公司 | Preparation is containing the intermediate and the preparation method that hold position two vinyl fluoride group liquid crystalline cpd |
| CN104513140B (en) * | 2013-09-30 | 2016-04-13 | 江苏和成新材料有限公司 | Contain the liquid crystalline cpd and preparation method and application of holding position difluoroethylene group |
| CN104662125B (en) * | 2015-01-23 | 2016-10-19 | 北京欣奕华科技有限公司 | Liquid-crystal compounds and preparation method thereof, liquid-crystal composition and display panels |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0325796A1 (en) * | 1987-12-28 | 1989-08-02 | Chisso Corporation | A liquid crystal compound and a mixture containing the same |
| CN1214036A (en) * | 1996-03-18 | 1999-04-14 | 智索股份有限公司 | Bisalkenyl derivatives, liquid crystalline compounds and liquid crystal compsns. |
| EP1158037A1 (en) * | 2000-05-22 | 2001-11-28 | Chisso Corporation | Fluoro-substitued alkenyl compounds, liquid crystal compositions, and liquid crystal display elements |
| CN102337139A (en) * | 2011-08-02 | 2012-02-01 | 江苏和成化学材料有限公司 | Liquid crystal composition and liquid crystal display comprising same |
-
2013
- 2013-03-14 CN CN201310082451.XA patent/CN103205265B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0325796A1 (en) * | 1987-12-28 | 1989-08-02 | Chisso Corporation | A liquid crystal compound and a mixture containing the same |
| CN1214036A (en) * | 1996-03-18 | 1999-04-14 | 智索股份有限公司 | Bisalkenyl derivatives, liquid crystalline compounds and liquid crystal compsns. |
| EP1158037A1 (en) * | 2000-05-22 | 2001-11-28 | Chisso Corporation | Fluoro-substitued alkenyl compounds, liquid crystal compositions, and liquid crystal display elements |
| CN102337139A (en) * | 2011-08-02 | 2012-02-01 | 江苏和成化学材料有限公司 | Liquid crystal composition and liquid crystal display comprising 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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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. |
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