CN102533278B - Liquid crystal composition - Google Patents
Liquid crystal composition Download PDFInfo
- Publication number
- CN102533278B CN102533278B CN201110437680.XA CN201110437680A CN102533278B CN 102533278 B CN102533278 B CN 102533278B CN 201110437680 A CN201110437680 A CN 201110437680A CN 102533278 B CN102533278 B CN 102533278B
- Authority
- CN
- China
- Prior art keywords
- compounds
- formula
- alkyl
- liquid crystal
- crystal composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention provides a liquid crystal composition, which comprises 20-60wt% one or more type I compounds, 10-50wt% one or more type II compounds, 1-20wt% one or more type III compounds and 1-10wt% one or more type IV compounds. The inventive liquid crystal composition has good overall performance, small delta n (delta n refers to optical anisotropy and falls into the range of 0.058-0.063), wide nematic phase temperature range, low viscosity, high charge retention ratio and good ultraviolet resistance, and can be used in electrically controlled birefringence (ECB) displays.
Description
Technical field
The present invention relates to a kind of liquid crystal material.Specifically, relate to a kind of ultralow Δ n, high clearing point, low viscosity, high electric charge conservation rate and there is the liquid-crystal composition of good uvioresistant performance.
Background technology
1888, Austria botanist Friedrich Reinitzer finds liquid crystal, and after this, research and the application of liquid crystal develop rapidly, especially, after W.Helfrich in 1971 has found twisted nematic liquid crystal field-effect together with M.Schadt, lcd technology is achieved.Since 1980, thin film transistor shows the invention of (TFT-LD) technology, makes liquid-crystal display become the outstanding person of digital information epoch technique of display.After 2000, the extensive of large-screen liquid crystal display television popularized and development, fundamentally changed especially the looks of display industries.
At present, different according to the principle of work of liquid-crystal display, liquid-crystal display is divided into following several: dynamic scattering (dynamic scattering, DS) type, electric field controls double refraction (electricallycontrolled birefringence, ECB) type, twisted-nematic (twisted nematic, TN) type, ferroelectric (ferroelectric liquid crystal, FLC) type, guest-master (guest-host, GH) type and phase transformation (phase change, PC) type etc.Wherein, ECB indicating meter is to utilize electrically controlled birefringence mode effect to realize the indicating meter showing.Electro-optic birefringent effect refers to that nematic liquid crystal box is under electric field action, because the initial molecular arrangement state of liquid crystal changes, thereby causes the phenomenon of the double refraction generation respective change of liquid crystal cell.Utilize this effect to show by the simple and comparatively stable colour of implementation structure.Specifically, when energising, long axis of liquid crystal molecule changes because voltage swing is different from the angle theta between direction of an electric field, therefore the degree of birefringence of liquid crystal cell is changed, after white this liquid crystal cell of rectilinearly polarized light incident of incident, under different degree of birefringence, can form different elliptically polarized lights, it selects tested wave plate to absorb, thereby forms distinct colors.
The advantage of ECB indicating meter maximum is with different voltage, can control a display device to demonstrate distinct colors, but its different colours is the difference of arranging by liquid crystal molecule, realizes.This just causes outer bound pair liquid crystal slightly to affect, and as the change of temperature, also can affect arranging of liquid crystal molecule and cause birefringent change, thereby affect Show Color.This has just proposed very high requirement to liquid crystal compound, and at present, the liquid crystal material that is applied to ECB indicating meter still exists the shortcomings such as nematic temperature range is narrow, voltage retention is not high.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, the nematic phase liquid crystal composition of a kind of extra small Δ n is provided.
Another object of the present invention is to provide this liquid-crystal composition in the application for ECB indicating meter.
In order to realize the object of the invention, the invention provides a kind of liquid-crystal composition, comprise the component of following weight percentage:
One or more I compounds of (1) 20～60% weight;
One or more II compounds of (2) 10～50% weight;
One or more III compounds of (3) 1～20% weight;
One or more IV compounds of (4) 1～10% weight;
Wherein, described I compounds is suc as formula shown in I:
In formula I, R
1and R
2be independently C
1～C
10alkyl or alkoxyl group, or C
2～C
10thiazolinyl.
Described II compounds is suc as formula shown in II:
In formula II, R
3for C
1～C
10alkyl or alkoxyl group; Z is-CH
2-CH
2-,-COO-, CF
2o-or singly-bound; Ring A is trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene, L1 and L2 be independently-H or-F.
Described III compounds is as shown in formula III:
In formula III, R
4, R
5be independently C
1～C
10alkyl or alkoxyl group; Ring A and ring B are independently trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene.
Described IV compounds is suc as formula shown in IV:
In formula IV, R
6for C
1～C
10alkyl or alkoxyl group.
Preferably, liquid-crystal composition of the present invention comprises the component of following weight percentage:
One or more I compounds of (1) 20～50% weight;
One or more II compounds of (2) 10～40% weight;
One or more III compounds of (3) 5～15% weight;
One or more IV compounds of (4) 2～7% weight.
In addition, liquid-crystal composition of the present invention also comprises the component of following weight percentage:
One or more V compounds of (5) 0～20% weight;
One or more VI compounds of (6) 0～20% weight;
Described V compounds is suc as formula shown in V:
R in formula V
7for C
1～C
10alkyl or alkoxyl group.
Described VI compounds is suc as formula shown in VI
R in formula VI
8for C
1～C
10alkyl or alkoxyl group, R
9for C
1～C
10alkyl or alkoxyl group ,-OCF
3or-OCHF
2.
Wherein, preferably, the content of V compounds is 1～15%.
The content of VI compounds is 1～15%.
Described I compounds is preferably shown in formula I:
In formula I, R
1for C
2～C
5thiazolinyl, R
2for C
2～C
5alkyl.
Specifically, described I compounds specifically refers to one or more in the monomer of following structure:
Described II compounds is preferably:
Wherein, R
31, R
32, R
33, R
34be independently C
2～C
5alkyl.
Specifically, one or more in the monomer that described II compounds is following structure:
Described III compounds is preferably:
R wherein
41, R
42, R
43, R
51, R
52and R
53be independently C
2～C
5alkyl.
Specifically, one or more in the monomer that described III compounds is following structure:
Described IV compounds is preferably:
In formula, R
6for C
1～C
5alkyl.
Specifically, one or more in the monomer that described IV compounds is following structure:
Described V compounds is preferably:
R in formula
7for C
1～C
5alkyl.
Specifically, one or more in the monomer that described V compounds is following structure:
Described VI compounds is preferably:
R in formula
8for C
1～C
5alkyl, R
9for-OCF
3or-OCHF
2.
Specifically, one or more in the monomer that described VI compounds is following structure:
Liquid-crystal composition of the present invention can adopt ordinary method preparation, the method preparation that for example various ingredients at high temperature can be mixed and dissolve each other; Or the component that wherein content is less is dissolved in the main ingredient that content is larger at higher temperature, or each component is dissolved respectively in organic solvent, after then solution being mixed, after removal solvent, obtain.Wherein, solvent for use can be the conventional organic solvents such as acetone, chloroform or methyl alcohol.
Liquid-crystal composition of the present invention has good over-all properties: extra small Δ n (Δ n is 0.058～0.063), wide nematic temperature range (30～85 ℃), low viscosity (≤15mm
2/ s), high electric charge conservation rate (>=99.9%) and good uvioresistant performance, can be used in ECB indicating meter.
Embodiment
Following examples are used for illustrating the present invention, but are not used for limiting the scope of the invention.
Liquid crystal compound of the present invention adopts the preparation of ubiquitous method in industry-thermal solution retorting process.First with balance, weigh by weight percentage each liquid crystalline cpd, wherein weigh addition sequence without particular requirement, conventionally with liquid crystalline cpd fusing point order from high to low, weigh successively mixing, at 60-100 ℃, heated and stirred melts evenly each component, again after filtration, revolve steaming, finally encapsulate and obtain target sample.In addition, also the related method of available patent CN101502767A is carried out the preparation of even liquid crystal.
Compound used in the present invention is all commercially available, as purchased from Zi Yu Beijing Bayi Space Liquid Crystal Materials Sci-tech Co., Ltd..
Except as otherwise noted, in context, per-cent is weight percentage, and all temperature are degree Celsius to provide.All optical datas are all measured at 20 ℃.
In embodiment, use following abbreviation:
Δ n is optical anisotropy, n
ofor specific refractory power (589nm, 20 ℃);
V
90for threshold voltage, be the character voltage (V, 20 ℃) when relative 90% contrast gradient, V
10for saturation voltage, be character voltage when relative 10% contrast gradient (V, 20 ℃)
C.p be liquid crystal compound clearing point (℃)
η is volume viscosity (mm
2/ s, 20 ℃);
Δ ε be dielectric constant anisotropy (20 ℃, 1000Hz).
In addition, in each embodiment, monomer structure adopts following abbreviation to represent
Embodiment 1
Embodiment 2
Embodiment 3
Embodiment 4
Embodiment 5
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements, all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (3)
1. a liquid-crystal composition, is characterized in that, comprises the component of following weight percentage:
One or more I compounds of (1) 20～50% weight;
One or more II compounds of (2) 10～40% weight;
One or more III compounds of (3) 5～15% weight;
One or more IV compounds of (4) 2～7% weight;
One or more V compounds of (5) 1～15% weight;
One or more VI compounds of (6) 1～15% weight;
Wherein, described I compounds is suc as formula shown in I:
In formula I, R
1for C
2～C
5thiazolinyl, R
2for C
2～C
5alkyl;
Described II compounds is suc as formula shown in II:
In formula II, R
3for C
1～C
10alkyl or alkoxyl group; Z is-CH
2-CH
2-,-COO-,-CF
2o-or singly-bound; Ring A is trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene, L
1and L
2be independently-H or-F;
Described III compounds is:
R wherein
41, R
42, R
43, R
51, R
52and R
53be independently C
2～C
5alkyl;
Described IV compounds is suc as formula shown in IV:
In formula IV, R
6for C
1～C
5alkyl;
Described V compounds is suc as formula shown in V:
R in formula V
7for C
1～C
10alkyl or alkoxyl group;
Described VI compounds is suc as formula shown in VI:
R in formula VI
8for C
1～C
10alkyl or alkoxyl group, R
9for C
1～C
10alkyl or alkoxyl group ,-OCF
3or-OCHF
2.
2. liquid-crystal composition according to claim 1, is characterized in that, R in formula
7, R
8be independently C
1～C
5alkyl, R
9for-OCF
3or-OCHF
2.
3. liquid-crystal composition according to claim 1 and 2 is in the application for the preparation of in ECB indicating meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437680.XA CN102533278B (en) | 2011-12-23 | 2011-12-23 | Liquid crystal composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437680.XA CN102533278B (en) | 2011-12-23 | 2011-12-23 | Liquid crystal composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102533278A CN102533278A (en) | 2012-07-04 |
| CN102533278B true CN102533278B (en) | 2014-03-19 |
Family
ID=46341340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110437680.XA Active CN102533278B (en) | 2011-12-23 | 2011-12-23 | Liquid crystal composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102533278B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421516B (en) * | 2013-06-06 | 2015-02-04 | 江苏和成显示科技股份有限公司 | Ultra-wide range temperature and high-weatherability liquid crystal composition and display thereof |
| CN108865176B (en) * | 2018-07-02 | 2020-12-01 | 西安彩晶光电科技股份有限公司 | Liquid crystal composition and photoelectric element |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6302196A (en) * | 1995-06-23 | 1997-01-22 | Merck Patent Gmbh | Nematic liquid-crystal composition |
| DE19733199A1 (en) * | 1997-08-01 | 1999-02-04 | Merck Patent Gmbh | Nematic liquid crystal composition for plasma-addressed displays |
| JP3601415B2 (en) * | 2000-02-04 | 2004-12-15 | チッソ株式会社 | Liquid crystal composition and liquid crystal display device |
| JP4400041B2 (en) * | 2002-12-04 | 2010-01-20 | チッソ株式会社 | Liquid crystal composition and liquid crystal display element |
| ATE458796T1 (en) * | 2006-11-27 | 2010-03-15 | Merck Patent Gmbh | LIQUID CRYSTAL MEDIUM AND LIQUID CRYSTAL DISPLAY |
| DE102010006691A1 (en) * | 2009-02-06 | 2010-10-28 | Merck Patent Gmbh | Liquid-crystalline medium and liquid-crystal display |
| TWI535829B (en) * | 2009-05-29 | 2016-06-01 | Jnc Corp | Liquid crystal composition and liquid crystal display element |
-
2011
- 2011-12-23 CN CN201110437680.XA patent/CN102533278B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN102533278A (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103740377B (en) | Liquid crystal composition and application thereof | |
| CN106554783B (en) | A kind of liquid-crystal composition and its application with high transmittance | |
| CN101544894B (en) | Liquid crystal composition | |
| CN103756686B (en) | A kind of High-contrast liquid crystal composition and application thereof | |
| CN103333700B (en) | Positive dielectric-aeolotropic liquid crystal composition with fast response | |
| CN103642502B (en) | A kind of liquid-crystal composition containing dioxygen heterocycle structure compound and application thereof | |
| CN104650924B (en) | Negative dielectric anisotropy liquid crystal medium and its application containing cyclopropyl | |
| CN103275735A (en) | Dielectric positive liquid crystal composition | |
| CN103773383B (en) | Quick-response liquid crystal composition with negative dielectric anisotropy and application thereof | |
| CN105542794A (en) | Liquid crystal composition and application thereof | |
| CN102559202B (en) | Nematic liquid crystal composition | |
| CN104593009A (en) | Liquid crystal composition and application thereof in liquid crystal display | |
| CN106520138B (en) | Liquid crystal media and its application | |
| CN113913197A (en) | Liquid crystal composition and liquid crystal display element or liquid crystal display comprising same | |
| CN106479515B (en) | A kind of liquid-crystal composition and liquid crystal lens | |
| CN102533278B (en) | Liquid crystal composition | |
| CN103289709A (en) | Quick-response nematic phase type liquid crystal composite | |
| CN103525431A (en) | Quick-responsive liquid crystal composition | |
| CN103305233A (en) | Negative dielectric anisotropy liquid crystal composition and application thereof | |
| CN103254908B (en) | Positive dielectric liquid crystal mixture containing (3,3,0) bicycle-octane monomer | |
| WO2015018298A1 (en) | Liquid crystal composition applicable in in-plane switching mode and an application of the composition | |
| CN109722255A (en) | Containing 2- methyl -3,4, the liquid-crystal composition of 5- trifluoro-benzene structural compounds and its application | |
| CN108690637A (en) | A kind of liquid-crystal composition containing fluoroethoxy compound and its application | |
| CN103351879B (en) | Positive dielectric anisotropic liquid crystal composition | |
| CN104479689A (en) | Liquid crystal composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |