CN106520138A

CN106520138A - Liquid crystal medium and application thereof

Info

Publication number: CN106520138A
Application number: CN201510587485.3A
Authority: CN
Inventors: 陈卯先; 陈海光; 姜天孟; 储士红; 王杰; 未欣; 张琳; 田会强; 苏学辉
Original assignee: Beijing Bayi Space LCD Technology Co Ltd
Current assignee: Beijing Bayi Space LCD Technology Co Ltd
Priority date: 2015-09-15
Filing date: 2015-09-15
Publication date: 2017-03-22
Anticipated expiration: 2035-09-15
Also published as: CN106520138B

Abstract

The invention provides a liquid crystal medium prepared from a compound containing dioxygen heterocyclic rings and 2-methyl-3,4,5-trifluoro-henyl. The liquid crystal medium has the low viscosity, the high resistance rate, the good low-temperature intersolubility, the high response speed and the excellent transmittance characteristic and can be applied to fast-response liquid crystal displaying in multiple display modes. The liquid crystal medium effectively increases the vertical dielectric, effectively improves the transmittance characteristic of a liquid crystal display, has the very low rotary viscosity gamma 1 and the high elastic constant and response speed and is suitable for a TN mode, an IPS mode and an FFS mode and especially suitable for various application of the IPS mode and the FFS mode.

Description

Liquid crystal media and its application

Technical field

The present invention relates to a kind of liquid crystal media, belongs to liquid crystal display material field, more particularly to is applied to IPS and FFS type liquid The liquid crystal media of crystal display.

Background technology

At present, liquid crystal is used widely in field of information display, while the application in optical communication also makes some progress (S.T.Wu, D.K.Yang.Reflective Liquid Crystal Displays.Wiley, 2001).In recent years, liquid-crystal compoundss Application has significantly widened kinds of displays part, electro-optical device, electronic component, sensor etc..For this purpose, having been proposed that Many different structures, particularly in nematic crystal field, nematic liquid crystal compound is obtained in flat faced display so far To most commonly used application.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 Friedrich in 1888 Reinitzer is found that the first liquid crystal material benzoic acid cholesterol (cholesteryl benzoate).Manguin sends out within 1917 Clear rubbing, to make single domain liquid crystal and research optical anisotropy.E.Bose is established and is collected together within 1909 (Swarm) theory, and experiment support (1918) of L.S.Ormstein and F.Zernike et al. is obtained, by De Gennes It is discussed as statistical fluctuation.G.W.Oseen and H.Zocher1933 foundes continuum theory, and it is perfect to obtain F.C.Frank (1958).M.Born (1916) and K.Lichtennecker (nineteen twenty-six) have found and have studied the dielectric of liquid crystal respectively to different Property.1932, nematic phase was divided into positive and negative two big class of property by W.Kast accordingly.Nineteen twenty-seven, V.Freedericksz and V.Zolinao It was found that nematic liquid crystal deforms upon and exists voltage threshold (Freederichsz transformations) under electric field (or magnetic field) effect.This One 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 make first liquid crystal display in the world Device (LCD).Early seventies, Helfrich and Schadt have invented TN principles, and people utilize TN photoelectric effect and integrated Circuit combines, 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 TwisredNematic：STN) pattern And active matrix (the Active matrix that P.Brody was proposed in 1972：AM) mode is adopted again.Traditional TN-LCD technologies have developed into STN-LCD and TFT-LCD technologies, although the number of scanning lines of STN up to 768 rows with On, but the problems such as remaining response speed, visual angle and gray scale when the temperature increases, therefore large area, high information quantity, It is colored to show the Active Matrix LCD At mode that adopt mostly.TFT-LCD is widely used for direct viewing type TV, large screen projection electricity Depending on, terminal shows and some military instrument show, it is believed that TFT-LCD technologies have more wide application prospect.

Wherein " active matrix " includes two types：1st, on the silicon wafer as substrate OMS (metal-oxide semiconductor (MOS)) Or other diodes.2nd, on the glass plate as substrate thin film transistor (TFT) (TFT).

Monocrystal silicon limits display size as substrate material, because each several part display device even module assembled goes out in its junction Existing many problems.Thus, second thin film transistor (TFT) is that have promising active matrix type, and the photoelectric effect for being utilized is usual It is TN effects.TFT includes compound semiconductor, such as Cdse, or the TFT based on polycrystalline or amorphous silicon.

At present, for the small size for flat board and smart mobile phone display and middle display of size, in face, change (IPS) It is very interesting with fringing field switching (FFS) pattern.IPS and FFS mode are widely used in intelligent and middle size and show The reason for showing device is wide viewing angle, and relative to the low operational factor for knowing pattern in prior art, relative to IPS patterns, FFS is gathered around There is higher absorbance.Liquid crystal compound of the prior art be characterised by which by the compound with positive dielectric anisotropy and Optional neutral compound is constituted.

In a liquid crystal display, expect to contribute to the medium of the following advantage in box：

1st, wide nematic phase range (particularly downwards until low temperature)

2nd, the ability (outdoor application, automobile, avionics) for switching under extremely low temperature

3rd, the toleration (longer service life) to ultraviolet radioactive for improving

4th, low threshold voltage (saving electric energy)

5th, high-transmission rate.

The major function of liquid crystal display is to play a part of photoswitch, light after liquid crystal layer light loss to only original 6% or so, so brighter display effect will be obtained, it is necessary to increase backlight illumination, this will increase the energy consumption of backlight and reduction Backlight life.Another approach is the liquid crystal display for obtaining high absorbance, and liquid crystal media provided by the present invention is conducive to Improve the absorbance of liquid crystal display.

It has now been discovered that under IPS and FFS display patterns, with little ε_∥/ε_⊥Liquid crystal media can effectively lift liquid crystal The light transmission rate of display, and the liquid crystal display of low driving voltage requires that liquid crystal has big △ ε (ε_∥-ε_⊥), therefore, Lift ε_⊥Become the key factor for lifting liquid crystal display transmitance.In liquid crystal media, liquid crystal molecule how is chosen vertical Become the index in the big liquid-crystal compoundss of the dielectric of long axis direction more of paramount importance.

In view of this, it is special to propose the present invention.

The content of the invention

The first object of the present invention be provide a kind of liquid crystal media (liquid crystal media i.e. containing dioxygen heterocycle and 2- methyl -3, The liquid-crystal composition of the compound of 4,5- trifluorophenyls, is hereafter alternatively referred to as " liquid-crystal composition "), and amazing Existing, the liquid crystal media obtained by the present invention effectively lifts the vertical dielectric of liquid crystal media, effectively improves liquid crystal display Light transmission rate, and the rotary viscosity γ 1 with very low numerical value, big elastic constant, fast response speed, it is adaptable to TN, The various applications of IPS and FFS mode, particularly IPS and FFS mode.

Specifically, liquid crystal media of the present invention includes the compound representated by least one or more of formula I:

Wherein, R₁Represent C₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；

A₁Represent:

A₂Represent:

N and m represent 0 or 1 independently of one another.

And at least one compounds of formula II：

Wherein, R₂Represent C₁～C₁₂Straight chained alkyl；R₃Represent C₁～C₁₂Straight chained alkyl, wherein one or more are non-conterminous CH₂Can be replaced by O, CH=CH；A₃、A₄Trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene is represented independently of one another.

In order to realize more preferable coordinating effect, liquid crystal media of the present invention includes following components in percentage by weight：

1), the compound representated by 1%～60% one or more formula I；

2), the compound representated by 1%～70% one or more formula II；

3), the compound representated by 0%～40% one or more general formula III；

4), the compound representated by 0%～40% one or more formula IV；

5), the compound representated by 0%～60% one or more formula V～formula IX；

Wherein, R₄Represent C₁～C₁₂Straight chained alkyl；L₁Represent H or F；P=0 or 1；

A₃Represent：

Wherein, R₅Represent C₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；R₆Represent C₁～C₁₂Straight chained alkyl；

A₄Represent：

Wherein, R₇、R₉C is represented independently of one another₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；R₈、R₁₀、R₁₁、 R₁₂C is represented independently of one another₁～C₁₂Straight chained alkyl；X₁、X₂、X₄F, CF is represented independently of one another₃、OCF₃Or OCF₂H； X₃Represent F, CF₃、OCF₃And C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl；L₂、L₃、L₄、L₅、L₆、 L₇、L₈、L₉、L₁₀、L₁₁、L₁₂H or F is represented independently of one another；

A₅、A₆Represent independently of one another：

A₇Represent：

A₈、A₉Represent independently of one another：

More preferably, the liquid crystal media includes following components in percentage by weight:

1), the compound representated by 5%～30% one or more formula I；

2), the compound representated by 15%～60% one or more formula II；

3), the compound representated by 0%～30% one or more general formula III；

4), the compound representated by 5%～30% one or more formula IV；

5), the compound representated by 10%～50% one or more formula V～formula IX；

Preferably, the liquid crystal media includes following components in percentage by weight:

1), the compound representated by 7%～27% one or more formula I；

2), the compound representated by 42%～57% one or more formula II；

3), the compound representated by 9%～24% one or more formula IV；

4), the compound representated by 12%～29% one or more formula V～formula IX；

Or

1), the compound representated by 5%～13% one or more formula I；

2), the compound representated by 19%～45% one or more formula II；

3), the compound representated by 6.5%～26% one or more general formula III；

4), the compound representated by 6%～25% one or more formula IV；

5), the compound representated by 14%～47% one or more formula V～formula IX.

Or

1), the compound representated by the logical formula (I) of one or more of 5%～27%；

2), the compound representated by the logical formula (II) of one or more of 19%～45.5%；

3), the compound representated by the logical formula (III) of one or more of 0%～26%；

4), the compound representated by the logical formula (IV) of one or more of 6%～25%；

5), the compound representated by the logical formula V of one or more of 0%～42%～logical formula (VII)

6), the compound representated by the logical formula (VIII) of one or more of 4%～19%

7), the compound representated by the logical formula (IX) of one or more of 0%～6%.

Liquid crystal media of the present invention, it is preferable that the one kind of the compound representated by formula I in Formulas I-A～Formulas I-F or It is various：

Wherein, R₁Represent C₁～C₇Straight chained alkyl.

Preferably, one or more in Formulas I-A-1～Formulas I-F-4 of the compound representated by formula I：

Liquid crystal media of the present invention, one or more in Formula II-A～Formula II-C of the compound representated by formula II：

Wherein, R₂Represent C₁～C₇Straight chained alkyl；R₃Represent C₁～C₇Straight chained alkyl, wherein one or more are non-conterminous CH₂Can be replaced by O or CH=CH.

Preferably, one or more in Formula II-A-1～Formula II-C-25 of the compound representated by formula II：

Preferably, one or more in formula III-A～formula III-H of the compound described in general formula III：

Wherein, R₄Represent C₁～C₇Straight chained alkyl.

It is highly preferred that R₄Represent C₂～C₅Straight chained alkyl.

Liquid crystal media provided by the present invention, one or more in formula IV-A～formula IV-C of the compound described in formula IV：

Wherein, R₅Represent C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl；R₆Represent C₁～C₇Straight chained alkyl.

It is highly preferred that R₅Represent C₂～C₅Straight chained alkyl or straight-chain alkenyl, R₆Represent C₁～C₅Straight chained alkyl.

Liquid crystal media provided by the present invention, it is preferable that the compound described in formula V in Formula V-A～Formula V-K Plant or various：

Wherein, R₇Represent C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl.

Preferably, one or more in Formula IV-A～Formula IV-P of the compound representated by formula VI：

Wherein, R₈Represent C₁～C₇Straight chained alkyl.

One or more in Formula VII-A～Formula VII-G of compound described in formula VII：

Wherein, R₉、X₃C is represented independently of one another₁～C₅Straight chained alkyl or C₂～C₅Straight-chain alkenyl.

One or more in Formula VIII-A～Formula VIII-L of compound described in formula VIII：

Wherein, R₁₀Represent C₁～C₇Straight chained alkyl.

One or more in Formula IX-A～Formula IX-C of compound described in formula IX：

Wherein, R₁₁、R₁₂C is represented independently of one another₁～C₇Straight chained alkyl.

It is highly preferred that R₇Represent C₂～C₅Straight chained alkyl or straight-chain alkenyl；R₈、R₉、R₁₀、R₁₁、R₁₂Independently of one another Represent C₂～C₅Straight chained alkyl.

In liquid crystal media provided by the present invention, the compound representated by formula I contains dioxygen heterocycle structure, and the structure has strong Inductive effect, the positive dielectric anisotropy (+△ ε) of liquid-crystal compoundss can be effectively increased, and with high vertical dielectric, And intersolubility is good, the low feature of rotary viscosity, excellent combination property.

Two ring structure compounds representated by II classes formula provided by the present invention are non-polar component.Such compound is for drop The viscosity of low system, raising response speed effect are notable, are the requisite class chemical combination of liquid crystal compound for allocating quick response Thing.

The compound provided by general formula III has big positive dielectric anisotropy, is conducive to being lifted the dielectric of liquid crystal media respectively to different Property, and with good intersolubility and low rotary viscosity.

Compound representated by IV classes formula provided by the present invention is three ring non-polar conformations, and which has big elastic constant (K₁₁、K₂₂、K₃₃) and low rotary viscosity, for the elastic constant for lifting liquid crystal media has positive effect.

Compound representated by V classes formula provided by the present invention is three ring polar structures, and with larger polarity, which is mutual Dissolubility is good.

Compound representated by VI classes formula provided by the present invention is three ring polar structures, and with larger polarity, which is mutual Dissolubility is good.

Compound representated by VII classes formula provided by the present invention is three structures, with big optical anisotropy, The optical anisotropy of liquid crystal media can effectively be increased.

Compound representated by VIII and IX classes formula provided by the present invention is tetracyclic structure, with big optics respectively to different Property and high clearing point performance, for lifted compositionss clearing point and optical anisotropy have remarkable result.

Positive dielectric anisotropic liquid crystals medium addition negative dielectric anisotropic composition increases display effect and sees Chinese patent earliest In CN103320142, compound I provided by the present invention is that, containing 2- methyl -3,4,5- trifluorophenyls and dioxygen are miscellaneous The compound of ring, the compound of the structure have big dielectric anisotropy and big vertical dielectric.

Two or more compounds can be mixed using conventional method by the preparation method of liquid crystal media of the present invention without particular restriction Produced, such as prepared by mixing different component method soluble in one another at high temperature, wherein, liquid crystal media is dissolved in For in the solvent of the compound and mixing, the solvent is then distilled out under reduced pressure；Or liquid crystal media of the present invention can be pressed Prepared by the method for more solito, wherein content less component is dissolved in content larger key component at a higher temperature such as In, or each affiliated component is dissolved in organic solvent, such as acetone, chloroform or methanol etc., solution mixing is removed into solvent then After obtain.

Invention also provides application of the above-mentioned liquid crystal media in liquid crystal indicator, the liquid crystal media have low viscosity, High resistivity, good low temperature intersolubility, fast response speed and excellent light transmission rate, can be used for plurality of display modes Fast-response liquid crystal display.Liquid crystal display is confined to the temperature range of liquid crystal, and liquid crystal only shows to show in the range of liquid crystalline phase Show effect, and the viscosity exponentially of liquid crystal increases during low temperature, low temperature response speed is its hard defects of liquid crystal display, so showing Effect can be substantially reduced.Liquid crystal media of the present invention overcomes these problems, with low viscosity and good cryogenic property and Excellent light transmission rate, its use in TN, IPS or FFS mode display can be obviously improved liquid crystal display and show Effect.

Specific embodiment

Following examples are used for illustrating the present invention, but are not limited to the scope of the present invention.

In the embodiment of the present invention, the preparation of liquid crystal media is adopted with the following method：

The preparation of uniform liquid crystal weighs liquid-crystalization with balance first by weight percentage using the heat of solution method for commonly using in the industry Compound, wherein weighs addition sequence without particular requirement, and the generally order with liquid-crystal compoundss fusing point from high to low weighs mixing successively, At 60-100 DEG C, heated and stirred causes each component to melt uniformly, then Jing is filtered, rotated, and finally encapsulation obtains final product target sample.

Unless otherwise stated, in context, percentage ratio is weight percentage, and all of temperature is degree Celsius being given.Using following contractings Write：

△ n be optical anisotropy (25 DEG C), Δ ε be dielectric anisotropy (25 DEG C, 1000Hz), ε_⊥For vertical dielectric (25 DEG C, 1000Hz), Cp for liquid crystal media clearing point (DEG C), γ 1 be rotary viscosity (25 DEG C, mpa.s), K₁₁、 K₂₂、K₃₃Respectively splay, distortion, bend elastic constant (25 DEG C, pN).

For the ease of representing, in following examples, in liquid-crystal compoundss, code shown in unit structure table 1 is represented：

Table 1：The unit structure code of liquid-crystal compoundss

By taking following structure as an example：

The structure is represented by code listed in Table 1, then it represents that for 4CDUQKF.

For another example following structure:

The structure is represented by code listed in Table 1, then it represents that for 5CCPUF.

Embodiment 1 takes the liquid-crystal compoundss of following percentage by weight and prepares liquid crystal media in heretofore described method, specifically Performance parameter with the when liquid crystal media of gained is shown in Table 2：

The weight percent of each component when performance parameter in the liquid crystal media of 2 embodiment 1 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3DUQKF	15	△n	0.100
I	2DPUQKF	6	Δε	+9.3
					I	3DPUQKF	6	ε_⊥	4.3
II	3CCV	42	γ1	72
					IV	V2CCP1	10	Cp	80
IV	VCCP1	9	K₁₁	11.6

VIII	3CPGUOCF₃	10	K₂₂	5.8
					VIII	3PPGUF	2	K₃₃	16.2

Embodiment 2

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 3：

The weight percent of each component when performance parameter in the liquid crystal media of 3 embodiment 2 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3CDUQKF	13	△n	0.099
II	3CCV	42	Δε	+12.5
					III	2APUQKF	10	ε_⊥	5.5
III	3APUQKF	5	γ1	85
					III	3PUQKF	10	Cp	89
IV	VCCP1	6	K₁₁	12.4
					VIII	2CCPUF	5	K₂₂	6.2
VIII	3CCPUF	5	K₃₃	16.3
					VIII	4CCPUF	4

Embodiment 3

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 4：

The weight percent of each component when performance parameter in the liquid crystal media of 4 embodiment 3 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3DCQKF	13	△n	0.095
II	3CCV	19	Δε	+11.9
					III	2APUQKF	5	ε^⊥	5.7
III	3APUQKF	8	Cp	91
					IV	VCCP1	8	γ1	120
V	VCCGF	10	K₁₁	12.6
					V	2CCUF	5	K₂₂	6.3
V	3CCUF	10	K₃₃	16.3
					V	5CCUF	5
VI	3CPGF	5
					VI	5CPUF	2
VI	3CGUF	5
					VIII	3CCPUF	5

Embodiment 4

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 5：

The weight percent of each component when performance parameter in the liquid crystal media of 5 embodiment 4 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	5	△n	0.100
I	4DPUQKF	2	Δε	+6.3
					II	3CCV	41	ε_⊥	3.4
II	5PP1	3	Cp	91
					III	3PUQKF	11	γ1	72
IV	3CPP2	6	K₁₁	12.8
					V	3CCPOCF₃	5	K₂₂	6.4
V	5CCPOCF₃	3	K₃₃	15.1
					VI	2CPPOCF₃	6
VIII	2CCPGF	4
					VIII	3CCPGF	5
VIII	4CCPGF	5
					VIII	5CCPGF	4

Embodiment 5

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 6：

The weight percent of each component when performance parameter in the liquid crystal media of 6 embodiment 5 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	5	△n	0.100
I	4DPUQKF	2	Δε	+6.1
					II	3CCV	41	ε_⊥	3.3
II	1PP2V	4	Cp	92
					III	3PUQKF	10	γ1	71
IV	VCPP3	6	K₁₁	12.6
					V	3CCPOCF₃	5	K₂₂	6.3
V	5CCPOCF₃	5	K₃₃	15.8
					VI	2CPPOCF₃	4
VIII	2CCPGF	4
					VIII	3CCPGF	5
VIII	4CCPGF	5
					VIII	5CCPGF	4

Embodiment 6

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 7：

The weight percent of each component when performance parameter in the liquid crystal media of 7 embodiment 6 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3DUQKF	7	△n	0.100
I	4DUQKF	7.5	Δε	+6.3
					I	4DPUQKF	2	ε_⊥	3.5
II	3CCV	38.5	Cp	92
					II	1PP2V	7	γ1	73
IV	VCPP3	9	K₁₁	12.6
					V	3CCPGF	10	K₂₂	6.3
VIII	2CCPGF	5	K₃₃	15.5
					VIII	3CCPGF	5
VIII	4CCPGF	5
					VIII	5CCPGF	4

Embodiment 7

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 8：

The weight percent of each component when performance parameter in the liquid crystal media of 8 embodiment 7 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	7	△n	0.106
I	4DPUQKF	3	Δε	+6.5
					II	3CCV	26	ε_⊥	3.5
II	1PP5	7	Cp	86
					III	3PUQKF	6.5	γ1	74
IV	VCCP1	18	K₁₁	12.4
					V	3CCGF	12	K₂₂	6.2
VI	3CPGF	8.5	K₃₃	15.3
					VII	3PGPF	6
VIII	3CCPGF	3
					VIII	4CCPGF	3

Embodiment 8

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 9：

The weight percent of each component when performance parameter in the liquid crystal media of 9 embodiment 8 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	8	△n	0.106
I	4DPUQKF	3	Δε	+6.4
					II	3CCV	35	ε_⊥	3.4
II	1PP5	5	Cp	87
					III	3PUQKF	9	γ1	70
IV	VCCP1	13	K₁₁	12.6
					IV	3CPP1	3	K₂₂	6.3
IV	3CPP2	3	K₃₃	15.1
					V	3CCGF	4
VII	3PGPF	6
					VIII	2CCPGF	3
VIII	3CCPGF	3
					VIII	4CCPGF	3
IX	3CPPC3	2

Embodiment 9

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 10：

The weight percent of each component when performance parameter in the liquid crystal media of 10 embodiment 9 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	8	△n	0.106
I	4DPUQKF	3	Δε	+6.4
					II	3CCV	38	ε_⊥	3.4
II	1PP5	3	Cp	86
					III	3PUQKF	8.5	γ1	72
IV	VCCP1	11	K₁₁	12.5
					IV	3CPP1	3	K₂₂	6.3
IV	3CPP2	3	K₃₃	15.4
					VI	3CPGF	5.5
VII	3PGPF	6
					VIII	2CCPGF	2
VIII	3CCPGF	3
					VIII	4CCPGF	3
IX	3CPPC3	3

Embodiment 10

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 11：

The weight percent of each component when performance parameter in the liquid crystal media of 11 embodiment 10 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3DUQKF	5	△n	0.108
II	3CCV	36	Δε	6.6
					III	3PUQKF	10	ε_⊥	3.6
IV	VCCP1	13	Cp	92
					IV	V2CCP1	12	γ1	78
VI	3DPUF	10	K₁₁	13.4
					VIII	2CCPUF	4	K₂₂	6.7
VIII	3CCPUF	4	K₃₃	17.1
					IX	5CPGP3	6

Embodiment 11

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 12：

The weight percent of each component when performance parameter in the liquid crystal media of 12 embodiment 11 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	3DCQKF	13	△n	0.100
II	3CCV	24	Δε	+11.6
					III	3PUQKF	12	ε_⊥	5.9
III	3APUQKF	14	γ1	112
					IV	VCCP1	9	Cp	85
V	3DCUF	10	K₁₁	12.6
					VI	3DGUF	10	K₂₂	6.3
VIII	2CCPUF	4	K₃₃	15.6
					VIII	3CCPUF	4

Embodiment 12

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 13：

The weight percent of each component when performance parameter in the liquid crystal media of 13 embodiment 12 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	4	△n	0.099
I	4DPUQKF	3	Δε	+5.9
					II	3CCV	25	ε_⊥	3.2

II	3CPO1	4	γ1	70
					II	5PP1	4	Cp	93
II	3CCV1	5	K₁₁	13.8
					II	3CC2	4	K₂₂	6.9
III	3PUQKF	10	K₃₃	16.4
					III	2APUQKF	4
IV	VCCP1	10
					IV	3CPP2	6
IV	3CCP1	7
					V	3CCPOCF₃	6
VIII	3CCPGF	4
					IX	3CPPC3	4

Embodiment 13

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 14：

The weight percent of each component when performance parameter in the liquid crystal media of 14 embodiment 13 of table

Classification	Component	Percentage by weight (%)	Performance parameter	Parameter value
					I	4DUQKF	7	△n	0.098
II	3CCV	40	Δε	+2.6
					II	3CCV1	12	ε_⊥	3.0
II	5CCV1	5	γ1	54
					IV	VCCP1	12	Cp	80
IV	V2CCP1	12	K₁₁	13.2
					VII	2PGPF	6	K₂₂	6.6
VII	3PGPF	6	K₃₃	15.8

Comparative example 1

Take the liquid-crystal compoundss of following percentage by weight and liquid crystal media is prepared in heretofore described method, it is concrete with when gained The performance parameter of liquid crystal media be shown in Table 15：

The weight percent of each component when performance parameter in the liquid crystal media of 15 comparative example 1 of table

Component	Percentage by weight (%)	Performance parameter	Parameter value
				3PGUQUF	6.5	△n	0.098
3APUQUF	5	Δε	+2.6
				3CCV	40	ε_⊥	2.6
3CCV1	12	γ1	80
				1V2PP1	7	Cp	52
VCCP1	13	K₁₁	13.6

V2CCP1	12	K₂₂	6.8
				2PGP3	4	K₃₃	16.2
3PPGUF	0.5

Comparative example 13 and comparative example 1, its parameter such as table 16：

16 comparative example 1 of table and 13 performance parameter of embodiment

Project	Comparative example 1	Embodiment 13
			△n	0.098	0.098
Δε	+2.6	+2.6
			ε_⊥	2.6	3.0
Cp	80	80
			γ1	52	54
K₁₁	13.6	13.2
			K₂₂	6.8	6.6
K₃₃	16.2	15.8

The vertical dielectric of embodiment 13 lifts 15% or so relative to comparative example 1, can effectively lift the transmitance of liquid crystal display Characteristic, plays transmitance and lifts 3.5% or so, its optical data such as table 17：

Chromaticity coordinates and the transmission measurement result of 17 comparative example 1 of table and embodiment 7

Project	Comparative example 1	Embodiment 13
			Colour temperature	7901.68	7954.82
Brightness	24.1847	25.0311
			x	0.2947	0.2934
y	0.3105	0.3103

Compositionss proposed by the invention have big vertical dielectric, can effectively lift the light transmission rate of liquid crystal display, tool Body implementation is to add the compound that I classes contain dioxygen heterocycle, and which has the induced electrical polarity of big vertical direction, so tool There is big vertical dielectric；The rotary viscosity of liquid crystal media is reduced using class ii compound, is reached with this and be there is fast corresponding and height The liquid crystal media of transmitance, liquid crystal media provided by the present invention using with TN, IPS, FFS type liquid crystal display, especially fit With IPS and FFS type liquid crystal displays.

Although above the present invention is described in detail with a general description of the specific embodiments, in the present invention On the basis of, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore, not Deviate these modifications or improvements on the basis of present invention spirit, belong to the scope of protection of present invention.

Claims

It is 1. a kind of to contain dioxygen heterocycle and 2- methyl -3, the liquid crystal media of the compound of 4,5- trifluorophenyls, it is characterised in that：

Comprising the compound representated by least one or more of formula I:

Wherein, R₁Represent C₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；

A₁Represent:

A₂Represent:

N and m represent 0 or 1 independently of one another；

And, the compound representated by least one formula II：

Wherein, R₂Represent C₁～C₁₂Straight chained alkyl；R₃Represent C₁～C₁₂Straight chained alkyl, wherein one or more are non-conterminous CH₂Can be replaced by O, CH=CH；A₃、A₄Trans Isosorbide-5-Nitrae-cyclohexyl or Isosorbide-5-Nitrae-phenylene is represented independently of one another.
2. liquid crystal media according to claim 1, it is characterised in that：The liquid crystal media includes following percentage by weight Component：

1), the compound representated by 1%～60% one or more formula I；

2), the compound representated by 1%～70% one or more formula II；

3), the compound representated by 0%～40% one or more general formula III；

4), the compound representated by 0%～40% one or more formula IV；

5), the compound representated by 0%～60% one or more formula V～formula IX；

Wherein, R₄Represent C₁～C₁₂Straight chained alkyl；L₁Represent H or F；P=0 or 1；

A₃It is each to represent：

Wherein, R₅Represent C₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；R₆Represent C₁～C₁₂Straight chained alkyl；

A₄Represent：

Wherein, R₇、R₉C is represented independently of one another₁～C₁₂Straight chained alkyl or C₂～C₁₂Straight-chain alkenyl；R₈、R₁₀、R₁₁、 R₁₂C is represented independently of one another₁～C₁₂Straight chained alkyl；X₁、X₂、X₄F, CF is represented independently of one another₃、OCF₃Or OCF₂H； X₃Represent F, CF₃、OCF₃And C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl；L₂、L₃、L₄、L₅、L₆、 L₇、L₈、L₉、L₁₀、L₁₁、L₁₂H or F is represented independently of one another；

A₅、A₆Represent independently of one another：

A₇Represent：

A₈、A₉Represent independently of one another：
3. liquid crystal media according to claim 2, it is characterised in that：The liquid crystal media includes following percentage by weight Component:

1), the compound representated by 5%～30% one or more formula I；

2), the compound representated by 15%～60% one or more formula II；

3), the compound representated by 0%～30% one or more general formula III；

4), the compound representated by 5%～30% one or more formula IV；

5), the compound representated by 10%～50% one or more formula V～formula IX；

Preferably, the liquid crystal media includes following components in percentage by weight:

1), the compound representated by 7%～27% one or more formula I；

2), the compound representated by 42%～57% one or more formula II；

3), the compound representated by 9%～24% one or more formula IV；

4), the compound representated by 12%～29% one or more formula V～formula IX；

Or

1), the compound representated by 5%～13% one or more formula I；

2), the compound representated by 19%～45% one or more formula II；

3), the compound representated by 6.5%～26% one or more general formula III；

4), the compound representated by 6%～25% one or more formula IV；

5), the compound representated by 14%～47% one or more formula V～formula IX；

Or

1), the compound representated by the logical formula (I) of one or more of 5%～27%；

2), the compound representated by the logical formula (II) of one or more of 19%～45.5%；

3), the compound representated by the logical formula (III) of one or more of 0%～26%；

4), the compound representated by the logical formula (IV) of one or more of 6%～25%；

5), the compound representated by the logical formula V of one or more of 0%～42%～logical formula (VII)

6), the compound representated by the logical formula (VIII) of one or more of 4%～19%

7), the compound representated by the logical formula (IX) of one or more of 0%～6%.
4. the liquid crystal media according to any one of claim 1-3, it is characterised in that：Chemical combination representated by the formula I One or more in Formulas I-A～Formulas I-F of thing：

Wherein, R₁Represent C₁～C₇Straight chained alkyl；

Preferably, one or more in Formulas I-A-1～Formulas I-F-4 of the compound representated by formula I：
5. the liquid crystal media according to any one of claim 1-4, it is characterised in that：Chemical combination representated by the formula II One or more in Formula II-A～Formula II-C of thing：

Wherein, R₂Represent C₁～C₇Straight chained alkyl；R₃Represent C₁～C₇Straight chained alkyl, wherein one or more are non-conterminous CH₂Can be replaced by O or CH=CH；

Preferably, one or more in Formula II-A-1～Formula II-C-25 of the compound representated by formula II：
6. the liquid crystal media according to any one of claim 1-5, it is characterised in that：Chemical combination representated by the general formula III One or more in formula III-A～formula III-H of thing：

Wherein, R₄Represent C₁～C₇Straight chained alkyl；

Preferably, R₄Represent C₂～C₅Straight chained alkyl.
7. the liquid crystal media according to any one of claim 1-6, it is characterised in that：Chemical combination representated by the formula IV One or more in formula IV-A～formula IV-C of thing：

Wherein, R₅Represent C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl；R₆Represent C₁～C₇Straight chained alkyl；

Preferably, R₅Represent C₂～C₅Straight chained alkyl or straight-chain alkenyl, R₆Represent C₁～C₅Straight chained alkyl.
8. the liquid crystal media according to any one of claim 1-7, it is characterised in that：Compound described in formula V is selected from One or more in Formula V-A～Formula V-K：

Wherein, R₇Represent C₁～C₇Straight chained alkyl or C₂～C₇Straight-chain alkenyl；

One or more in Formula IV-A～Formula IV-P of compound representated by the formula VI：

Wherein, R₈Represent C₁～C₇Straight chained alkyl；

One or more in Formula VII-A～Formula VII-G of compound described in the formula VII：

Wherein, R₉、X₃C is represented independently of one another₁～C₅Straight chained alkyl or C₂～C₅Straight-chain alkenyl；

One or more in Formula VIII-A～Formula VIII-L of compound described in the formula VIII：

Wherein, R₁₀Represent C₁～C₇Straight chained alkyl；

One or more in Formula IX-A～Formula IX-C of compound described in the formula IX：

Wherein, R₁₁、R₁₂C is represented independently of one another₁～C₇Straight chained alkyl.
9. liquid crystal media according to claim 8, it is characterised in that：R₇Represent C₂～C₅Straight chained alkyl or straight-chain alkenyl； R₈、R₉、R₁₀、R₁₁、R₁₂C is represented independently of one another₂～C₅Straight chained alkyl.
10. application of the liquid crystal media in liquid crystal indicator described in any one of claim 1-9, it is characterised in that：Described Liquid crystal indicator is TN, FFS or IPS display.