CN104726108B - A kind of liquid-crystal composition for containing 1,3 dioxane liquid-crystal compounds and application - Google Patents
A kind of liquid-crystal composition for containing 1,3 dioxane liquid-crystal compounds and application Download PDFInfo
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Abstract
The present invention relates to liquid crystal material technical field, more particularly to a kind of liquid-crystal composition and its application containing 1,3 dioxane liquid-crystal compounds.Liquid-crystal composition of the invention, by weight, including the compound representated by (1) 1 60 part of one or more formula I, compound representated by (2) 1 80 parts of one or more formulas II, compound representated by (3) 1 30 parts of one or more general formula IIIs, compound representated by (4) 1 30 parts of one or more formula IV, its formula of I is the 3 dioxane liquid-crystal compounds containing 1.Liquid-crystal composition of the invention has low viscosity, high resistivity, good low temperature intersolubility and fast response speed, can well be satisfied with the display devices such as requirement harsh shutter glasses, 3D and TN, TN TFT, OCB, IPS, PS IPS, VA IPS, FFS, PS FFS and PS VA IPS.
Description
Technical field
The present invention relates to liquid crystal material technical field, more particularly to a kind of liquid crystal containing 1,3- dioxane liquid-crystal compounds
Composition and application.
Background technology
At present, liquid crystal is used widely in field of information display, while the application in optical communication is also achieved necessarily
Progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).In recent years,
The application field of liquid-crystal compounds significantly widens kinds of displays part, electro-optical device, electronic component, sensor etc..For
This, it has been suggested that many different structures, particularly in nematic crystal field, nematic liquid crystal compound is so far flat
Most commonly used application is obtained in panel display.Particularly it is used in the system of tft active matrix.
Liquid crystal display experienced very long road for development with the discovery of liquid crystal.Austrian botanist in 1888
Friedrich Reinitzer are found that the first liquid crystal material benzoic acid cholesterol (cholesteryl benzoate).
Manguin has invented rubbing within 1917, is used to make single domain liquid crystal and research optical anisotropy.E.Bose in 1909
Moving (Swarm) theory is established, and obtains the experiment of L.S.Ormstein and F.Zernike et al. and support (1918), after
Statistical fluctuation is discussed as through De Gennes.G.W.Oseen and H.Zocher1933 foundes continuum theory, and obtains
F.C.Frank perfect (1958).M.Born (1916) and K.Lichtennecker (nineteen twenty-six) have found and have studied liquid crystal
Dielectric anisotropy.1932, nematic phase was divided into the positive and negative major class of property two by W.Kast accordingly.Nineteen twenty-seven,
V.Freedericksz and V.Zolinao has found that nematic liquid crystal under electric field (or magnetic field) effect, deforms upon and exist electricity
Pressure threshold value (Freederichsz transformations).This making for being found to be liquid crystal display provides foundation.
Nineteen sixty-eight RCA Corp. of U.S. R.Williams has found that nematic liquid crystal forms striped farmland under electric field action, and has
Light scattering phenomenon.G.H.Heilmeir with will its develop into dynamic scattering display pattern, and be made first liquid crystal in the world
Display (LCD).Early seventies, Helfrich and Schadt have invented TN principles, and people are using TN photoelectric effect and integrated
Circuit is combined, and is made display device (TN-LCD), is that wide prospect has been opened up in the application of liquid crystal.The seventies with
Come, due to the development of large scale integrated circuit and liquid crystal material, application of the liquid crystal in terms of display achieves breakthrough development,
1983~1985 years T.Scheffer et al. successively propose super-twist nematic (Super Twisred Nematic：STN) pattern
And active matrix (the Active matrix that P.Brody was proposed in 1972：AM) mode is used again.Traditional TN-
LCD technology has developed into STN-LCD and TFT-LCD technologies, although the number of scanning lines of STN up to 768 rows more than, work as temperature
The problems such as response speed, visual angle and gray scale are remained during rising, therefore large area, high information quantity, colored display are mostly
Using Active Matrix LCD At mode.TFT-LCD is widely used for direct viewing type TV, large-curtain projecting TV set, terminal
Display and some military instrument show, it is believed that TFT-LCD technologies have more wide application prospect.
Wherein " active matrix " includes two types：1st, the OMS on the silicon wafer as substrate (partly lead by metal oxide
Body) or other diodes.2nd, on the glass plate as substrate thin film transistor (TFT) (TFT).
Monocrystalline silicon limits display size as substrate material, because each several part display device even module assembled is tied at it
Occur many problems at conjunction.Thus, second thin film transistor (TFT) is the promising active matrix type of tool, and the photoelectricity for being utilized is imitated
TN effects should be typically.TFT includes compound semiconductor, such as Cdse, or the TFT based on polycrystalline or amorphous silicon.
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 in respective field gradually
Occupy the dominant position of flat-panel monitor.But (viscosity is high) is restricted in itself by liquid crystal material, causes the response time to turn into shadow
Ring the principal element of Performance Monitor.
The content of the invention
The liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds and application, the liquid it is an object of the invention to provide one kind
Crystal composite has the corresponding time faster, especially shows as the good low temperature response time.
In order to realize above-mentioned target, the present invention is adopted the following technical scheme that：
Liquid-crystal composition of the one kind containing 1,3- dioxane liquid-crystal compounds, by weight, including 1-60 parts of (1) is a kind of
Or the compound representated by various formulas I,
(2) compound representated by 1-80 parts of one or more formula II,
(3) compound representated by 1-30 parts of one or more general formula III,
(4) compound representated by 1-30 parts of one or more formula IV；
The structure of formula I~formula IV is as follows：
Wherein, R1~R7H, F, OCF are represented independently of one another3, unsubstituted C1-C12Alkyl or C2~C12Alkenyl, portion
Divide-CH2By the C of-O- substitutions1-C12Alkyl or C2~C12The C that alkenyl, H are replaced by one or more F1-C12Alkyl or C2~
C12Alkenyl；
A, B, C are represented independently of one another：1,4- cyclohexyl or 1,4- phenylenes；
L1~L6H or F is represented independently of one another；
Y can independently represent singly-bound, ethyl bridged bond, difluoro methoxy bridge bond, ester bridged bond；
N independently represents 1 or 2.
Used as preferred technical scheme, above-mentioned (1)~(4) sum is 100 parts.
Preferably, liquid-crystal composition provided by the present invention, by weight, including
(1), the compound representated by 10-60 parts of one or more formula I,
(2), the compound representated by 20-60 parts of one or more formula II,
(3), the compound representated by 5-30 parts of one or more general formula III,
(4), the compound representated by 5-30 parts of one or more formula IV.
It is highly preferred that liquid-crystal composition provided by the present invention, by weight, including
(1), the compound representated by 15-45 parts of one or more formula I,
(2), the compound representated by 30-60 parts of one or more formula II,
(3), the compound representated by 5-25 parts of one or more general formula III,
(4), the compound representated by 10-30 parts of one or more formula IV.
As one of preferred embodiment of the invention, liquid-crystal composition of the invention, by weight, including (1) 30-45
Compound representated by one or more formula I of part,
(2) compound representated by 32-43 parts of one or more formula II,
(3) compound representated by 6-25 parts of one or more general formula III,
(4) compound representated by 10-21 parts of one or more formula IV.
As the two of preferred embodiment of the invention, liquid-crystal composition of the invention, by weight, including (1) 18-27
Compound representated by one or more formula I of part,
(2) compound representated by 30-56 parts of one or more formula II,
(3) compound representated by 5-20 parts of one or more general formula III,
(4) compound representated by 11-28 parts of one or more formula IV.
Compound representated by formula I is specifically selected from one or more in Formulas I A, I B, I C, I D or I E：
Wherein, R1Independently represent the C replaced by one or more F1-C12Alkyl or C2~C12Alkenyl；L1Independently generation
Table H or F.
Compound representated by formula II is selected from one or more in II A or II B：
Wherein, R3、R4C is represented independently of one another1-C12Alkyl or C2~C12Alkenyl, which part-CH2Group can by-
O- is substituted.
Compound representated by general formula III is selected from one or more in III A or III B：
Wherein, R5Independently represent unsubstituted C1-C12Alkyl or C2~C12Alkenyl, part-CH2Group is taken by-O-
The C in generation1-C12Alkyl or C2~C12Alkenyl.
Compound representated by formula IV is selected from one or more in IV A, IV B, IV C or IV D：
Wherein, R6、R7C is represented independently of one another1-C12Alkyl or C2~C12Alkenyl.
Specifically, the compound representated by formula I is selected from one or more in following compounds：
Specifically, the compound representated by formula II is selected from one or more in following compounds：
Preferably, the compound representated by formula II be selected from IIA-2, IIA-4, IIA-6, IIA-19, IIB-1, IIB-6,
One or more in IIB-8, IIB-9, IIB-10, IIB-11.
Specifically, the compound representated by general formula III is selected from one or more in following compounds：
Specifically, the compound representated by formula IV is selected from one or more in following compounds：
Preferably, the compound representated by formula IV be selected from IVA-2, IVA-3, IVA-5, IVA-6, IVB-2, IVB-3,
In IVB-5, IVC-1, IVC-2, IVD-2, IVD-3, IVD-4, IVD-5, IVE-1, IVE-3, IVE-5, IVE-13, IVE-22
One or more.
In liquid-crystal composition provided by the present invention, the compound representated by formula I has dielectric anisotropy high,
And intersolubility is good, the low feature of viscosity, excellent combination property.
Two ring structure compounds representated by formula II provided by the present invention are non-polar component.Such compound for
The viscosity of reduction system, raising response speed effect are notable, are the essential classes of the liquid crystal compound of allotment quick response
Compound.
Fluorine substituted biphenyl compound representated by general formula III provided by the present invention has optical anisotropy high, right
The remarkable effect in the optical anisotropy of lifting composition.
Compound representated by formula IV provided by the present invention is tricyclic structure, and the class formation has clearing point high and big
K value characteristics, for lifting liquid-crystal composition K value (elastic constant) characteristic have good effect.
The present invention can effectively reduce mixed liquid crystal using the physical parameter performance of this four classes compound adjustable liquid crystal display composition
Rotary viscosity characteristic, improve liquid crystal response time.
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, and is such as prepared by mixing different component at high temperature and method soluble in one another, wherein, by liquid crystal group
Compound is dissolved in the solvent for the compound and mixes, and the solvent is then distilled out under reduced pressure；Or it is 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 is dissolved in organic solvent, such as acetone, chloroform or methyl alcohol, then will be molten
Obtained after liquid mixing removal solvent.
Liquid-crystal composition of the present invention has low viscosity, high resistivity, good low temperature intersolubility and fast response
Speed, can be used for the fast-response liquid crystal display of plurality of display modes, especially require shutter glasses, 3D and TN, TN- of harshness
Use in the display devices such as TFT, OCB, IPS, PS-IPS, VA-IPS, FFS, PS-FFS and PS-VA-IPS can be obviously improved liquid
Crystal display display effect.
Specific embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
The preparation of liquid-crystal composition is adopted with the following method in the embodiment of the present invention：
The preparation of uniform liquid crystal is weighed by weight percentage with balance first using the heat of solution method for commonly using in the industry
Liquid-crystal compounds, wherein weigh addition sequence without particular requirement, generally with liquid-crystal compounds fusing point order from high to low successively
Mixing is weighed, heating stirring causes that each component melts uniformly at 60-100 DEG C, then through filtering, revolving, finally encapsulation obtains final product mesh
Standard specimen product.
Unless otherwise indicated, percentage is weight percentage in context, and all of temperature is degree Celsius being given.Under use
State abbreviation：△ n are optical anisotropy (25 DEG C), and Δ ε is dielectric anisotropy (25 DEG C, 1000Hz), and V10 is threshold voltage,
It is the character voltage (V, 25 DEG C) when relative permeability changes 10%, γ 1 is rotary viscosity (mPa.s, 25 DEG C), and Cp is liquid crystal
The clearing point (DEG C) of composition.K11, K22, K33 are respectively splay, distortion and bend elastic constant (pN, 25 DEG C).
Embodiment 1
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 1：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 1 of table 1
| Classification | Weight portion | Performance parameter | Parameter value |
| I A-3 | 12 | △n | 0.102 |
| I C-2 | 8 | Δε | +8.3 |
| I E-2 | 5 | Cp | 95 |
| II A-2 | 25 | γ1 | 76 |
| II A-4 | 12 | 13.7 | |
| II B-6 | 8 | 7.3 | |
| III A–1 | 5 | 17 | |
| IV A–2 | 7 | ||
| IV B–3 | 8 | ||
| IV D-2 | 10 |
Said composition has low rotary viscosity, big K values, it is adaptable to fast-response and high-contrast liquid crystal display device.
Embodiment 2
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 2：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 2 of table 2
| Classification | Weight portion | Performance parameter | Parameter value |
| I A-2 | 8 | △n | 0.120 |
| I B-2 | 8 | Δε | +8.7 |
| I D-2 | 11 | Cp | 97 |
| II A-2 | 20 | γ1 | 67 |
| II A-6 | 5 | 14.5 | |
| II B-6 | 5 | 8.1 | |
| III A–2 | 8 | 19.3 | |
| III B–2 | 7 | ||
| IV A–3 | 6 |
| IV B–2 | 6 | ||
| IV C-2 | 8 | ||
| IV D-4 | 8 |
Said composition has low rotary viscosity, it is adaptable to fast-response liquid crystal display device.
Embodiment 3
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 3：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 3 of table 3
| Classification | Weight portion | Performance parameter | Parameter value |
| I A-2 | 7 | △n | 0.098 |
| I A-4 | 6 | Δε | +6.8 |
| I B-3 | 8 | Cp | 88 |
| I B-4 | 6 | γ1 | 68 |
| I E-6 | 8 | 12.4 | |
| II A-2 | 25 | 6.2 | |
| II A-19 | 8 | 16.3 | |
| II B-1 | 6 | ||
| II B-8 | 4 | ||
| III A–4 | 7 | ||
| IV A–5 | 6 | ||
| IV B–5 | 3 | ||
| IV D-3 | 3 | ||
| IV D-5 | 3 |
Said composition has low rotary viscosity and big elastic constant, it is adaptable to fast-response and high-contrast liquid crystal display
Device.
Embodiment 4
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 4：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 4 of table 4
| Classification | Weight portion | Performance parameter | Parameter value |
| I B-2 | 4 | △n | 0.098 |
| I B-3 | 5 | Δε | +7.2 |
| I C-2 | 4 | Cp | 81 |
| I D-4 | 4 | γ1 | 55 |
| I E-1 | 3 | 13.2 | |
| II A-2 | 40 | 7.2 | |
| II B-9 | 6 | 15.4 | |
| II B-11 | 10 | ||
| III A–7 | 6 | ||
| III B–2 | 6 | ||
| IV A–2 | 6 | ||
| IV C-2 | 6 |
Embodiment 5
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 5：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 5 of table 5
| Classification | Weight portion | Performance parameter | Parameter value |
| I A-1 | 12 | △n | 0.112 |
| I A-3 | 11 | Δε | +8.8 |
| I C-2 | 8 | Cp | 83 |
| I C-3 | 7 | γ1 | 65 |
| I E-6 | 7 | 12.8 | |
| II A-2 | 27 | 6.6 | |
| II A-4 | 5 | 16.4 | |
| II B-8 | 5 | ||
| III A–1 | 3 | ||
| III A–6 | 3 | ||
| IV A–6 | 4 | ||
| IV B–3 | 4 | ||
| IV D-2 | 4 |
Embodiment 6
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 6：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 6 of table 6
| Classification | Weight portion | Performance parameter | Parameter value |
| I A-3 | 8 | △n | 0.120 |
| I C-2 | 6 | Δε | +7.6 |
| I C-3 | 6 | Cp | 90 |
| I D-2 | 6 | γ1 | 77 |
| I E-3 | 4 | 12.1 | |
| II A-2 | 30 | 7.3 | |
| II B-6 | 5 | 19.0 | |
| III A–2 | 9 | ||
| III A–4 | 9 | ||
| III B–2 | 7 | ||
| IV B–2 | 3 | ||
| IV C-1 | 4 | ||
| IV E–1 | 3 |
Embodiment 7
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 7：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 7 of table 7
| Component | Weight portion | Performance parameter | Parameter value |
| I B-3 | 5 | △n | 0.104 |
| I B-4 | 4 | Δε | +7.9 |
| I C-3 | 3 | Cp | 96 |
| I C-4 | 3 | γ1 | 75 |
| I D-3 | 7 | 13.2 | |
| I D-6 | 7 | 7.5 | |
| I E-2 | 4 | 18.6 | |
| II A-2 | 28 | ||
| II A-6 | 5 | ||
| II B-10 | 5 | ||
| III A–2 | 4 | ||
| III B–2 | 4 | ||
| IV A–2 | 7 | ||
| IV B–3 | 7 | ||
| IV D-2 | 7 |
Said composition has low viscosity, clearing point high, fast response time, it is adaptable to fast-response temperature liquid crystal display wide
Device.
Embodiment 8
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 8：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 8 of table 8
| Component | Weight portion | Performance parameter | Parameter value |
| I A-2 | 6 | △n | 0.105 |
| I A-3 | 5 | Δε | +8.0 |
| I B-4 | 3 | Cp | 94 |
| I C-2 | 5 | γ1 | 87 |
| I C-4 | 4 | 12.7 | |
| I D-3 | 4 | 7.4 | |
| I E-2 | 5 | 16.9 | |
| I E-4 | 4 | ||
| II A-2 | 20 | ||
| II A-10 | 6 | ||
| II B-11 | 6 | ||
| III A–3 | 7 | ||
| III A–7 | 6 | ||
| III A–9 | 5 | ||
| IV A–2 | 8 | ||
| IV E-22 | 6 |
Said composition has the fast response time, it is adaptable to the liquid crystal display device of normal temperature work.
Embodiment 9
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 9：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 9 of table 9
| Component | Weight portion | Performance parameter | Parameter value |
| I A-2 | 4 | △n | 0.108 |
| I B-1 | 4 | Δε | +8.6 |
| I B-2 | 3 | Cp | 97 |
| I C-1 | 3 | γ1 | 92 |
| I C-2 | 5 | 13.2 | |
| I D-2 | 4 | 7.6 | |
| II A-2 | 38 | 17.2 | |
| II B-6 | 6 | ||
| II B-8 | 6 | ||
| III A–2 | 6 | ||
| III A–4 | 6 | ||
| III A–7 | 4 | ||
| IV B–2 | 4 | ||
| IV B–3 | 4 | ||
| IV E-13 | 3 |
Embodiment 10
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 10：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 10 of table 10
| Component | Weight portion | Performance parameter | Parameter value |
| I A-4 | 6 | △n | 0.098 |
| I B-2 | 6 | Δε | +2.6 |
| I C-3 | 8 | Cp | 92 |
| II A-2 | 44 | γ1 | 65 |
| II B-6 | 6 | 14.3 | |
| III A–1 | 7 | 7.5 | |
| III A–2 | 6 | 15.8 | |
| IV A–2 | 8 | ||
| IV D-2 | 9 |
Embodiment 11
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 11：
The weight portion and performance parameter of each component in the liquid-crystal composition of the embodiment 11 of table 11
| Component | Weight portion | Performance parameter | Parameter value |
| I A-4 | 6 | △n | 0.100 |
| I B-1 | 6 | Δε | +6.5 |
| I B-3 | 6 | Cp | 90 |
| I C-2 | 5 | ||
| I E-7 | 4 | ||
| II A-2 | 30 | ||
| II B-6 | 10 | ||
| III A–1 | 8 | ||
| IV A–6 | 5 | ||
| IV B–3 | 5 | ||
| IV C-2 | 5 | ||
| IV D-2 | 5 | ||
| IV E-3 | 5 |
Embodiment 12
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 12：
The weight percent of each component when performance parameter in the liquid-crystal composition of the embodiment 12 of table 12
| Component | Weight portion | Performance parameter | Parameter value |
| I A-3 | 5 | △n | 0.112 |
| I B-3 | 3 | Δε | +4.6 |
| I B-4 | 5 | Cp | 75 |
| I C-3 | 5 | γ1 | 51 |
| II A-2 | 36 | ||
| II B-6 | 12 | ||
| III A–1 | 7 | ||
| III A–6 | 6 | ||
| III A–7 | 7 | ||
| IV A–2 | 5 | ||
| IV C-2 | 5 | ||
| IV E-5 | 4 |
Comparative example 1
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 13：
The weight portion and performance parameter of each component in the liquid-crystal composition of the comparative example 1 of table 13
| Component | Weight portion | Performance parameter | Parameter value |
| II A-14 | 35 | △n | 0.093 |
| II A-22 | 5 | Δε | +5.6 |
| III A–1 | 6 | Cp | 85 |
| III A–2 | 7 | γ1 | 80 |
| III A–4 | 6 | 12.4 | |
| IV A–2 | 8 | 6.6 | |
| IV A–5 | 8 | 14.0 | |
| IV B–3 | 6 | ||
| IV C-1 | 8 | ||
| IV C-2 | 5 | ||
| IV C-4 | 6 |
Comparative example 1 and comparative example 1, the △ n of embodiment 1 are big, and clearing point is high, and rotary viscosity is low, and elastic constant is big, response
Time is substantially better than comparative example 1.
Comparative example 2
Take the liquid-crystal compounds of following weight portion and prepare liquid-crystal composition in heretofore described method, it is specific with when
The performance parameter of the liquid-crystal composition of gained is shown in Table 14：
The weight portion and performance parameter of each component in the liquid-crystal composition of the comparative example 2 of table 14
| Component | Weight portion | Performance parameter | Parameter value |
| II A-14 | 25 | △n | 0.098 |
| II A-19 | 12 | Δε | +6.3 |
| III A–1 | 10 | Cp | 75 |
| III A–2 | 10 | γ1 | 80 |
| III A–4 | 6 | 12.4 | |
| IV A–2 | 12 | 6.3 | |
| IV B–5 | 12 | 12.6 | |
| IV C–3 | 13 |
Comparative example 2 and comparative example 2 can be seen that embodiment 2 has bigger elastic constant than comparative example 2, faster
Response time.
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 (10)
1. one kind contains the liquid-crystal composition of 1,3- dioxane liquid-crystal compounds, it is characterised in that by weight, by such as the following group
It is grouped into：
(1) compound representated by 1-60 parts of one or more formula I,
(2) compound representated by 1-80 parts of one or more formula II,
(3) compound representated by 1-30 parts of one or more general formula III,
(4) compound representated by 1-30 parts of one or more formula IV；
The structure of the formula I~formula IV is as follows：
Wherein, R1Represent the C that one or more H are replaced by F1-C12Alkyl；R2Represent F；R3、R4Represent independently of one another not by
Substitution or part-CH2C is replaced by-O-1-C12Alkyl or C2~C12Alkenyl；R5Represent unsubstituted or part-CH2Taken by-O-
The C in generation1-C12Alkyl or C2~C12Alkenyl；R6Represent C1-C12Alkyl or C2~C12Alkenyl；R7Represent F, OCF3, do not taken
The C in generation1-C12Alkyl.
A, B, C represent 1,4- cyclohexyl or 1,4- phenylenes independently of one another；
L1~L6H or F is represented independently of one another；
Y independently represents singly-bound or difluoro methoxy bridge bond；
N independently represents 1 or 2.
2. the liquid-crystal composition for containing 1,3- dioxane liquid-crystal compounds according to claim 1, it is characterised in that by such as
The following group is grouped into：
(1) compound representated by 10-60 parts of one or more formula I, representated by (2) 20-60 parts of one or more formula II
Compound, the compound representated by (3) 5-30 parts of one or more general formula III, (4) 5-30 parts of one or more formula IV institute
The compound of representative.
3. the liquid-crystal composition for containing 1,3- dioxane liquid-crystal compounds according to claim 1, it is characterised in that by weight
Amount part meter, is made up of following component：
(1) compound representated by 15-45 parts of one or more formula I, representated by (2) 30-60 parts of one or more formula II
Compound, the compound representated by (3) 5-25 parts of one or more general formula III, (4) 10-30 parts of one or more formula IV institute
The compound of representative.
4. the liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds according to claim any one of 1-3, its feature
It is that the compound representated by formula I is selected from one or more in Formulas I A, IB, IC, I D or IE：
Wherein, R1Represent the C that one or more H are replaced by F1-C12Alkyl；L1Independently represent H or F.
5. the liquid-crystal composition for containing 1,3- dioxane liquid-crystal compounds according to claim 4, it is characterised in that formula
Compound representated by I is selected from one or more in following compounds：
6. the liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds according to claim any one of 1-3, its feature
Be, the compound representated by formula II be selected from II-A, II-B in one or more,
Wherein, R3、R4Unsubstituted or part-CH is represented independently of one another2C is replaced by-O-1-C12Alkyl or C2~C12Alkene
Base.
7. the liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds according to claim any one of 1-3, its feature
Be, the compound representated by general formula III be selected from III-A or III-B in one or more,
Wherein, R5Independently represent unsubstituted or part-CH2By the C of-O- substitutions1-C12Alkyl or C2~C12Alkenyl.
8. the liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds according to claim any one of 1-3, its feature
Be, the compound representated by formula IV be selected from formula IV-A, IV-B, IV-C or IV-D in one or more,
Wherein, R6Represent C1-C12Alkyl or C2~C12Alkenyl；R7Represent C1-C12Alkyl.
9. the liquid-crystal composition containing 1,3- dioxane liquid-crystal compounds according to claim any one of 1-3, its feature
It is that the compound representated by formula II is selected from one or more in following compounds：
Compound representated by general formula III is selected from one or more in following compounds：
Compound representated by formula IV is selected from one or more in following compounds：
10. application of the liquid-crystal composition described in any one of claim 1-9 in liquid crystal display device.
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