CN103589437B - Liquid crystal media - Google Patents

Abstract

The present invention relates to liquid crystal media, and it includes the compound of at least one Formulas I,With at least one Formulas I A based on entire mixture weight meter >=20% and/IB compoundWherein R¹、R^1*、a、L¹、L²、L³And L⁴With the implication shown in claim 1, and further relate to it and be used for Active Matrix Display, be based particularly on VA, PM VA, PSA, PS VA, the display applications of PALC, FFS or IPS effect.

Description

Liquid crystal media

The present invention relates to liquid crystal media, and it includes the compound of at least one Formulas I

With

The compound of at least Formulas I A and/IB based on entire mixture weight meter >=20%

Wherein

R¹And R^1*Each represent alkyl or alkoxy with 1-15 C atom independently of one another, in addition wherein these One or more CH in group₂Can be independently of one another by-C ≡ C- ,-CF₂O- ,-CH=CH-, 、- O- ,-CO-O- ,-O-CO- are substituted by O atom in a manner of not directly connected to each other, and in addition, one or more H Atom can be substituted by halogen, and

A represents 0 or 1,

L¹And L²F, Cl, CF are each represented independently of one another₃Or CHF₂, and

L³And L⁴H, F, Cl, CF are each represented independently of one another₃Or CHF₂, preferably H or F.

Such medium particularly can be shown for the electrical-optical with active array addressing based on ECB effects Device and IPS (change) display or FFS (fringing field conversion) display in plane.

1971, electric field controls birefringence is proposed first, i.e. ECB effects or i.e. DAP (arranges and mutually deformed) effect Principle (M.F.Schieckel and K.Fahrenschon, " Deformation of nematic liquid crystals With vertical orientation in electrical fields ", Appl.Phys.Lett.19 (1971), 3912).J.F.Kahn (Appl.Phys.Lett.20 (1972), 1193) and G.Labrunie and J.Robert afterwards (J.Appl.Phys.44 (1973), 4869) has delivered paper.

J.Robert and F.Clerc (SID80Digest Techn.Papers (1980), 30), J.Duchene The paper table that (Displays7 (1986), 3) and H.Schad (SID82Digest Techn.Papers (1982), 244) are delivered Bright, liquid crystalline phase must have high elastic constant K₃/K₁Ratio, high optical anisotropy Δ n values and Jie of Δ ε≤- 0.5 Electrical anisotropy, so as to suitable for the high information display element based on ECB effects.Electrical-optical display element tool based on ECB effects There is vertical edge to arrange (VA technologies=vertical arrangement).The liquid crystal media of negative dielectricity can be also used for so-called IPS or FFS The display of effect.

Use the display of ECB effects, such as so-called VAN (vertical arrangement nematic) display, such as (more quadrants hang down in MVA Straight orientation, such as：Yoshide, H. etc., paper 3.1：" MVA LCD for Notebook or Mobile PCs... ", SID2004International Symposium, Digest of Technical Papers, XXXV, Book I, pp.6-9, And Liu, C.T. etc., paper 15.1：" A46-inch TFT-LCD HDTV Technology... ", SID2004International Symposium, Digest of Technical Papers, XXXV, Book II, Pp.750-753), PVA (vertical orientated configuration, such as：Kim, Sang Soo, paper 15.4：″Super PVA Sets New State-of-the-Art for LCD-TV ", SID2004International Sympos ium, Digest of Technical Papers, XXXV, Book II, pp.760-763), ASV (ultraphotic angle, such as：Shigeta, Mitzuhiro and Fukuoka, Hirofumi, paper 15.2：" Development of High Quality LCDTV ", SID2004International Symposium, Digest of Technical Papers, XXXV, Book II, Pp.754-757) in pattern, except IPS (plane in change) display (such as：Yeo, S.D., paper 15.3：″An LC Display for the TV Application ", SID2004International Symposium, Digest of Technical Papers, XXXV, Book II, pp.758＆759) and known TN (twisted nematic) display for a long time outside, Its own is also developed into one of three kinds of currently the most important liquid crystal displays recently, particularly in TV.Example Such as, in Souk, Jun, SID Seminar2004, seminar M-6：″Recent Advances in LCD Technology ", Seminar Lecture Notes, M-6/1 to M-6/26, and Miller, Ian, SID Seminar2004, seminar M-7：" LCD-Television ", Seminar Lecture Notes, M-7/1 is into M-7/32 with conventionally form Compare above-mentioned technology.Although the response time of modern ECB displays has significantly been carried by using hypervelocity driving addressing method Height, such as；Kim, Hyeon Kyeong etc., paper 9.1：″A57-in.Wide UXGA TFT-LCD for HDTV Application ", SID2004International Symposium, Digest of Technical Papers, XXXV, Book I, pp.106-109, but the progress of image compatibility response time, it is still particularly in gray shade conversion The problem of not obtaining being satisfactorily addressed.

The industrial applications of this effect need LC phases in electrical-optical display element, its meet demand of having to it is various Property.The particularly importantly chemical resistance in moist, air and physical influence is for example hot, infrared ray, visible ray and purple Outside line and direct current and AC field.

In addition, the LC phases industrially used need be adapted to have liquid crystal mesophase and low viscosity in temperature range.

The series compound neither one with liquid crystal mesophase disclosed so far includes and disclosure satisfy that whole these requirements Single compound.2-25 kinds are thus generally prepared, the preferably mixture of 3-18 kinds compound can be used as LC phases to obtain The material used.However, it is impossible easily to prepare optimum phase by this way, because so far also without usable The liquid crystal material with notable negative dielectric anisotropic and enough long-time stability.

Known matrix liquid crystal display (MLC displays).It can be used in the non-linear element example that single pixel is individually changed Active component (such as transistor) in this way.Terms used below " active matrix ", it is distinct between two of which type：

1st, as MOS (metal-oxide semiconductor (MOS)) transistor on the silicon wafer of substrate

2nd, as the thin film transistor (TFT) (TFT) on the glass plate of substrate.

In the case of Class1, used electro-optic effect is usually dynamic scattering or guest-host effect.As substrate The use of the monocrystalline silicon of material limits the size of display, also can be in junction because the module of different piece display is integrated Problem is caused to produce.

In the case of preferable more promising type 2, the electro-optic effect used is generally TN effects.

The difference of two kinds of technologies：TFT containing compound semiconductor such as CdSe or based on polysilicon or amorphous silicon TFT.Latter technique is able to concentrate research in worldwide.

TFT matrixes are applied to the inside of a glass plate of display, and another glass plate load wherein it is transparent To electrode.Compared with the size of pixel electrode, TFT is very small and there's almost no adverse effect in the picture.The technology It can also expand in the display of full color function, wherein by the mosaic block of red, green and blue optical filter make it that filter element is every The individual mode opposite with changeable pixel arranges.

Here, term MLC displays include any matrix display with integrated non-linear element, i.e., except active square Battle array is outer, also the display with passive element, such as variable resistor or diode (MIM=metal-insulator-metal types).

This kind of MLC displays apply (such as pocket TV) either height in automobile or aircaft configuration especially suitable for TV Content indicator.In addition to the problem of dependence of angle on contrast and response time, in MLC displays due to The not high enough ratio resistance of liquid crystal compound also cause problem [TOGASHI, S., SEKIGUCHI, K., TANABE, H., YAMAMOTO, E., SORIMACHI, K., TAJIMA, E., WATANABE, H., SHIMIZU, H., Proc.Eurodisplay84, Sept.1984：A210-288Matrix LCD Controlled by Double Stage Diode Rings, Pp.141ff., Paris；STROMER, M., Proc.Eurodisplay84, Sept.1984：Design of Thin Film Transistors for Matrix Addressing of Television Liquid Crystal Displays, Pp.145ff., Paris].With the decline of resistance, the contrast of MLC displays deteriorates.Due to the inner surface phase with display Interaction and the ratio resistance of liquid crystal compound is typically declined with the life-span of MLC displays, it is therefore high for display (initial) resistance is very important, therefore have to that there is acceptable resistance value after longtime running.

Therefore, for very high ratio resistance, while there is big operating temperature range, short response time and low For the MLC displays of threshold voltage (can produce various gray shades by the voltage), persistently there is huge demand.

The defects of MLC-TN displays frequently used be due to their relatively low contrast, relatively high visual angle according to Lai Xinghe produces the difficulty of gray shade in these displays.

VA displays have obvious preferably viewing angle dependence and are therefore mainly used in TV and monitor.However, This continues to need improving the response time, especially with regard to the frame frequency (image modification frequency/repetition rate) more than 60Hz TV use.However, the property of such as low-temperature stability can not weaken simultaneously.

It is an object of the invention to provide liquid crystal compound, especially for based on ECB effects or IPS or FFS effects Monitor and TV applications for, it is without disadvantages mentioned above or only has disadvantages mentioned above in lesser degree.Especially, it Must assure that monitor and TV can also be run under high or extremely low temperature, at the same with the short response time and simultaneously with Improved reliability properties, do not have after long-play especially or with the image retention substantially reduced.

Surprisingly, if being preferred for VA displays, it is especially useful in PM (passive matrix)-VA liquid crystal mixing Thing, in the LC mixtures particularly with negative dielectric anisotropy, the compound of Formulas I and at least one Formulas I A is applied in combination And/or IB tolane compound, then it can improve rotary viscosity and therefore improve the response time.

Phase property and low clearing point due to difference, so-called monocyclic compound (compound with a ring) are general not The liquid crystal compound of nematic can be used for.However, the combination of the compound of compound and Formulas I A and/or IB shown in Formulas I, makes us Surprisingly show while there is low-down rotary viscosity and high optical anisotropy value.It is therefore possible to prepare liquid crystal to mix Compound, preferably VA mixtures, it has the short response time, while has good phase property and good low temperature behavior.

Therefore the present invention relates to liquid crystal media, it includes the compound of at least one Formulas I and at least one Formulas I A and/or IB Compound.

There are >=70 DEG C (preferably >=75 DEG C, particularly >=80 according to what the mixture of the present invention preferably showed non-constant width DEG C) clearing point nematic scope, very favorable capacitive character threshold value, relatively high holding ratio, while at -20 DEG C and -30 Extraordinary low-temperature stability at DEG C, and low-down rotary viscosity and high Δ n values.Removed according to the mixture of the present invention Improvement rotary viscosity γ₁Outside, also significantly observe that there is useful very high elastic constant to improving the response time Value K₃₃。

According to the mixture of the present invention, some preferred embodiments are described below.

In the compound of Formulas I, R¹And R^1*It is each preferred independently of one another to represent unbranched alkoxy, particularly OC₂H₅、 OC₃H₇、OC₄H₉、OC₅H₁₁、OC₆H₁₃, also alkenyloxy, particularly OCH₂CH=CH₂、OCH₂CH=CHCH₃、OCH₂CH= CHC₂H₅, also alkyl, particularly n-C₃H₇、n-C₄H₉、n-C₅H₁₁、n-C₆H₁₃。

Preferred formula I compound is compound of the Formulas I -1 to I-10,

Wherein

Alkyl and alkyl^*Each represent the straight chained alkyl with 1-6 C atom independently of one another, alkenyl with alkenyl^*The straight-chain alkenyl with 2-6 C atom, alkoxy and alkoxy are each represented independently of one another^*Each independently of one another Ground represents the unbranched alkoxy with 1-8 C atom.L¹And L²F or Cl is each represented independently of one another.

In the compound of Formulas I -1 to I-10, L¹And L²It is each preferred independently of one another to represent F or Cl, particularly F.It is special Other preferred formula I-6 compound.In the compound of Formulas I -6, preferably L¹=L²=F.

At least one Formulas I -6A or I-6B compound is very particularly preferably included according to the mixture of the present invention：

Very particularly preferably include at least one following group of compound according to the mixture of the present invention：

In the compound of Formulas I and minor, L¹And L²It is each preferred independently of one another to represent F or Cl, particularly F.R¹With R^1*It is preferred that all represent alkoxy.

In Formulas I A compound, R¹And R^1*It is each preferred independently of one another to represent straight chained alkyl, alkoxy or alkenyl.R¹ It is preferred that represent CH₃、C₂H₅、n-C₃H₇、n-C₄H₉、n-C₅H₁₁。

R^1*It is preferred that represent alkyl or alkoxy, particularly CH₃、C₂H₅、n-C₃H₇、n-C₄H₉、n-C₅H₁₁、OCH₃、OC₂H₅、 OC₃H₇、OC₄H₉And OC₅H₁₁。

R in particularly preferred Formulas I B compound¹And R^1*Alkyl is represented independently of one another.

In preferred embodiments, in Formulas I A and IB compound, L³And L⁴For L³=L⁴=F or L³=L⁴=H, Particularly L³And L⁴F is represented independently of one another.

Preferred formula IA and IB compound are the compounds of following formula：

Wherein

Alkyl and alkyl^*The straight chained alkyl with 1-6 C atom is each represented independently of one another, and

Alkoxy represents the unbranched alkoxy with 1-8 C atom.

Especially, Formulas I A is preferably following compounds：

Wherein

The implication that alkyl, alkyl* and alkoxy are represented is same as described above.

Preferred formula IA minor is Formulas I A-2a, IA-4a, IA-6a and IA-7a.

Preferred mixture includes at least one Formulas I A-2a compound and/or at least one Formulas I A-4a compound.

Preferred mixture includes at least one Formulas I A-4a compound and/or at least one Formulas I A-7a compound.

Preferred mixture includes at least one Formulas I A-2a compound and at least one Formulas I A-4a compound and extremely A kind of few Formulas I A-7a compound.

Particularly preferred mixture includes at least one Formulas I A-2a compound and at least one Formulas I A-4a compound.

Particularly preferred mixture include at least one Formulas I A-2a compound and at least one Formulas I A-4a compound with And at least one Formulas I B-1 compound.

The compound of Formulas I, IA and IB is known, such as WO2011/098224, EP0308438 and DE4105742.

According to the medium of the present invention preferably comprise it is a kind of, two kinds, three kinds, four kinds or more kinds of, preferably comprise it is a kind of, two The compound of kind or three kinds of Formulas I.

According to the medium of the present invention preferably comprise it is a kind of, two kinds, three kinds, four kinds or more kinds of, preferably comprise it is a kind of, two The compound of kind or three kinds of Formulas I A.

According to the medium of the present invention preferably comprise it is a kind of, two kinds, three kinds, four kinds or more kinds of, preferably comprise one kind Or two kinds of Formulas I B compound.

The compound of Formulas I 1-20% weight preferably in terms of based on amount of the mixture, the preferably amount of 2-20% weight are used for liquid In crystalline medium.The particularly preferably liquid crystal media of the compound of one or more Formulas I comprising 5-20% weight.

Formulas I A compound 5-60% weight preferably in terms of based on amount of the mixture, the amount of preferably 10-60% weight are used for Liquid crystal media.Formulas I B compound 0-35% weight preferably in terms of based on amount of the mixture, the amount of preferably 2-25% weight are used for Liquid crystal media.Formulas I A and IB compound preferably in terms of based on amount of the mixture >=20% weight, preferably 25-60% weight, it is special The amount of not preferred 30-60% weight is used for liquid crystal media.

It is described below according to the preferred embodiment of the liquid crystal media of the present invention：

A) liquid crystal media also includes one or more kinds of compounds selected from Formula II A, IIB and IIC compound：

Wherein

R^2A、R^2BAnd R^2CH is each represented independently of one another, and the alkyl with most 15 C atoms, the alkyl is not taken Generation, by CN or CF₃It is monosubstituted or at least mono-substituted by halogen, in addition wherein, one or more of these groups CH₂ Group can by-O- ,-S-,、-C≡C-、-CF₂O-、-OCF₂- ,-OC-O- or-O-CO- with O atom not directly with one another Connected mode substitutes,

L^1-4F, Cl, CF are each represented independently of one another₃Or CHF₂,

Z²And Z^2’Singly-bound ,-CH are each represented independently of one another₂CH₂- ,-CH=CH- ,-CF₂O-、-OCF₂-、-CH₂O-、 -OCH₂-、-COO-、-OCO-、-C₂F₄- ,-CF=CF- ,-CH=CHCH₂O-,

P represents 1 or 2,

Q expressions 0 or 1, and

V represents 1-6.

In Formula II A and IIB compound, Z²There can be same or different implication.In Formula II B compound In, Z²And Z^2’There can be same or different implication.

In Formula II A, IIB and IIC compound, R^2A、R^2BAnd R^2CIt is preferred respectively to represent the alkane with 1-6 carbon atom Base, particularly CH₃、C₂H₅、n-C₃H₇、n-C₄H₉、n-C₅H₁₁。

In Formula II A and IIB compound, L¹、L²、L³And L⁴It is preferred that represent L¹=L²=F and L³=L⁴=F, also L¹= F and L²=Cl, L¹=Cl and L²=F, L³=F and L⁴=Cl, L³=Cl and L⁴=F.In Formula II A and IIB compound, Z²With Z^2’It is preferred that each representing singly-bound independently of one another, there is-C₂H₄- bridged bond.

If in Formula II B, Z²=-C₂H₄-, then Z^2’Preferably singly-bound, or if Z^2’=-C₂H₄-, then Z²Preferably Singly-bound.In Formula II A and IIB compound, (O) C_vH_2v+1It is preferred that represent OC_vH_2v+1, also C_vH2_v+1.In Formula II C compound In, (O) C_vH_2v+1It is preferred that represent C_vH_2v+1.In Formula II C compound, L³And L⁴It is preferred that each represent F.

Shown in Formula II A, IIB and IIC compound are preferably as follows：

Wherein alkyl and alkyl* each represents the straight chained alkyl with 1-6 carbon atom independently of one another.(O) Alkyl* represents alkyl * or O- alkyl *.

One or more kinds of Formula II A-2, IIA-8, IIA-14, IIA- are particularly preferably included according to the mixture of the present invention 26th, IIA-29, IIA-35, IIA-42, IIB-2, IIB-11, IIB-16 and IIC-1 compound.

The ratio of Formula II A and/or IIB compound preferably accounts at least 20% weight of entire mixture.

At least one Formula II C-1 compound is particularly preferably included according to the medium of the present invention,

Wherein alkyl and alkyl* has an above-mentioned implication, and preferred content is the weight of ＞ 3%, the particularly weight of ＞ 5%, and And particularly preferably 5-25% weight.

B) liquid crystal media also includes the compound of one or more formula IIIs,

Wherein

R³¹And R³²Each represent independently of one another with the straight chained alkyls of most 12 C atoms, alkoxyalkyl or Alkoxy, and

RepresentOr

Z³Represent singly-bound ,-CH₂-CH₂- ,-CH=CH- ,-CF₂O-、-OCF₂-、-CH₂O-、-OCH₂-、- COO-、-OCO-、-C₂F₄-、-C₄H₈- ,-CF=CF-.

Preferable formula III compound is as follows：

Wherein

Alkyl and alkyl* each represents the straight chained alkyl with 1-6 C atom independently of one another.

A kind of formula III a and/or formula III b compound is preferably comprised at least according to the medium of the present invention.

The ratio of the compound of formula III preferably accounts at least 5% weight of entire mixture.

C) liquid crystal media also includes the compound such as following formula

It is preferred that total amount >=and 5% weight, particularly >=10% weight.

The compound such as following formula is further preferably included according to the mixture of the present invention：

D) liquid crystal media also includes the tetracyclic compound of one or more Formula V -1 to V-9：

Wherein

R^7-10Each have and R in claim 2 independently of one another^2AOne of shown implication, and

W and x each represent 1-6 independently of one another.

Mixture particularly preferably includes the compound of at least one Formula V -9.

E) liquid crystal media also includes one or more formula Y-1 to Y-6 compound,

Wherein R¹⁴-R¹⁹Alkyl or alkoxy with 1-6 carbon atom are each represented independently of one another；Z and m each that This independently represents 1-6；X represents 0,1,2 or 3.

One or more formula Y-1 to Y-6 compound particularly preferably include according to the medium of the present invention, preferred content is >= 5% weight.

F) liquid crystal media also includes one or more formula T-1 to T-21 fluoro terphenyl,

Wherein

R represents straight chained alkyl or alkoxy with 1-7 C atom, and m=0,1,2,3,4,5 or 6 and n expressions 0, 1st, 2,3 or 4.

R preferably represents methyl, ethyl, propyl group, butyl, amyl group, hexyl, methoxyl group, ethyoxyl, propoxyl group, butoxy, penta Epoxide.

The content for the terphenyl for preferably comprising formula T-1 to T-21 according to the medium of the present invention is 2-30% weight, especially It is 5-20% weight.

Particularly preferably formula T-1, T-2, T-20 and T-21 compound.In these compounds, R preferably represents alkane Base, it is further alkoxy, each there is 1-5 carbon atom.In formula T-20 compound, R preferably represents alkyl or alkenyl, Particularly alkyl.In formula T-21 compound, R preferably represents alkyl.

If Δ n value >=0.1 of mixture, according to the present invention, be preferably added in the mixture is terphenyl.It is it is preferred that mixed Compound includes the one or more terphenyl compounds of group selected from T-1 to T-21 compounds of 2-20% weight.

G) liquid crystal media also includes one or more formula B-1 to B-3 biphenyl：

Wherein

Alkyl and alkyl^*The straight chained alkyl with 1-6 C atom is each represented independently of one another,

Alkenyl and alkenyl^*The straight-chain alkenyl with 2-6 C atom is each represented independently of one another.

The ratio of formula B-1 to B-3 biphenyl is preferably at least 3% weight of amount of the mixture, particularly >=5% weight.

In formula B-1 to B-3 compound, particularly preferred formula B-2 compound.

Particularly preferred biphenyl is：

Wherein alkyl* represents the alkyl with 1-6 C atom.According to the medium of the present invention particularly preferably comprising a kind of or A variety of formula B-1a and/or B-2c compound.

H) liquid crystal media includes at least one formula Z-1 to Z-7 compound,

Wherein R and alkyl has implication described above.

I) liquid crystal media includes at least one formula O-1 to O-16 compound,

Wherein R¹And R²Have and R^2AIdentical implication.R¹And R²Straight chained alkyl is represented preferably independently of one another.

It is preferred that medium includes one or more formula O-1, O-3, O-4, O-5, O-9, O-13, O-14, O-15 and/or O-16's Compound.

According to compound of the mixture of the present invention particularly preferably comprising formula O-9, O-15 and/or O-16, special content is 5-30%.

Preferred formula O-15 and O-16 compound are as follows：

According to the present invention medium particularly preferably comprising formula O-15a and/or formula O-15b tricyclic compound and one kind or A variety of formula O-16a to O-16d dicyclic compound.Formula O-15a and/or formula O-15b tricyclic compound and one or more The toatl proportion of dicyclic compound selected from formula O-16a to O-16d is 5-40%, particularly preferred 15-35%.

Very particularly preferably mixture inclusion compound O-15a and O-16a：

The concentration of compound O-15a and O-16a preferably in the mixture is 15-35%, particularly preferred 15-25%, and More preferably 18-22%, the total amount meter based on mixture.

Very particularly preferably mixture inclusion compound O-15b and O-16a：

The concentration of compound O-15b and O-16a preferably in the mixture is 15-35%, particularly preferred 15-25%, and More preferably 18-22%, the total amount meter based on mixture.

Very particularly preferably mixture includes following three compound：

The concentration of compound O-15a, O-15b and O-16a preferably in the mixture is 15-35%, particularly preferred 15- 25%, and more preferably 18-22%, the total amount meter based on mixture.

J) one or more things comprising tetrahydro naphthyl or naphthyl unit are preferably comprised according to the liquid crystal media of the present invention Matter, such as formula N-1 to N-5 compound,

Wherein R^1NAnd R^2NEach have independently of one another and R^2AIdentical implication, preferably represent straight chained alkyl, straight chain alcoxyl Base or straight-chain alkenyl, and

Z¹And Z²Respective expression-C independently of one another₂H₄- ,-CH=CH- ,-(CH₂)₄-、-(CH₂)₃O-、-O(CH₂)₃-、-CH =CHCH₂CH₂-、-CH₂CH₂CH=CH- ,-CH₂O-、-OCH₂-、-COO-、-OCO-、-C₂F₄- ,-CF=CF- ,-CF=CH- ,- CH=CF- ,-CF₂O-、-OCF₂-、-CH₂- or singly-bound.

K) preferred mixture contain one or more difluorodiphenyls selected from formula BC and chroman compound, formula CR chroman, Formula PH-1 and PH-2 fluoro are luxuriant and rich with fragrance, the compound of formula BF fluoro dibenzofurans,

Wherein

R^B1、R^B2、R^CR1、R^CR2、R¹、R²Each there is R independently of one another^2AImplication.C is 0,1 or 2.

The content for the compound for preferably comprising formula BC, CR, PH-1, PH-2 and/or BF according to the mixture of the present invention is 3- 20% weight, particularly content are 3-15% weight.Particularly preferred formula BC and CR compound for BC-1 to BC-7 and CR-1 extremely CR-5 compound,

Wherein

Alkyl and alkyl^*The straight chained alkyl with 1-6 C atom is each represented independently of one another,

Alkenyl and alkenyl^*The straight-chain alkenyl with 2-6 C atom is each represented independently of one another.

Very particularly preferably mixture includes a kind of, two kinds or three kinds formula BC-2 compound.

I) preferred mixture includes one or more Formulas I n indane compound,

Wherein

R¹¹、R¹²、R¹³Straight chained alkyl, alkoxy, alkoxy alkane with 1-6 C atom are each represented independently of one another Base or alkenyl,

R¹²And R¹³Halogen, preferably F are also may indicate that,

I represents 0,1 or 2.

Preferred formula In compound is following formula In-1 to In-16 compound,

Particularly preferred Formulas I n-1, In-2, In-3 and In-4 compound.

In the mixture according to the present invention, preferably with the weight of concentration >=5%, particularly 5-30% weight, and especially It is preferred that the amount of 5-25% weight uses Formulas I n and minor In-1 to In-16 compound.

M) preferred mixture also includes one or more formula L-1 to L-11 compound,

Wherein R, R¹And R²Each there is the R of claim 4 independently of one another^2AShown implication, and alkyl represents 1- The alkyl of 6 C atoms.S represents 1 or 2.

Particularly preferred formula L-1 and L-4 compound, particularly L-4.

Formula L-1 to L-11 compound is preferably with 5-50% weight, particularly 5-40% weight, and particularly preferred 10- The concentration of 40% weight uses.

The definition of particularly preferred mixture is described below：(abbreviation used is illustrated in Table A.N and m that This independently represents 1-6 herein).

Preferably comprised according to the mixture of the present invention：

The compound of-Formulas I, wherein L¹=L²=F and R¹=R^1*=alkoxy,

- CPY-n-Om, particularly CPY-2-O2, CPY-3-O2 and/or CPY-5-O2, preferred concentration ＞ 5%, particularly 10-30%, based on amount of the mixture meter,

And/or

- CY-n-Om, preferably CY-3-O2, CY-3-O4, CY-5-O2 and/or CY-5-O4, preferred concentration ＞ 5%, particularly 15-50%, based on amount of the mixture meter,

And/or

- CCY-n-Om, preferably CCY-4-O2, CCY-3-O2, CCY-3-O3, CCY-3-O1 and/or CCY-5-O2 are preferably dense ＞ 5%, particularly 10-30% are spent, based on amount of the mixture meter,

And/or

- CLY-n-Om, particularly CLY-2-O4, CLY-3-O2 and/or CLY-3-O3, preferred concentration ＞ 5%, particularly 10-30%, based on amount of the mixture meter,

And/or

- CK-n-F, particularly CK-3-F, CK-4-F and/or CK-5-F, particularly preferred concentration ＞ 5%, 5-25%, base In amount of the mixture meter.

It is particularly preferred that the mixture according to the present invention defined comprising following mixture：

(n and m is each represents 1-6 independently of one another.)

- PTP-nOmFF and CPTP-nOmFF and PPTUI-n-m,

- PTP-nOmFF and CPTP-nOmFF and PPTUI-n-m and CC-n-V,

- PTP-nOmFF and CPTP-nOmFF and CPTP-nm,

- CPY-n-Om and CY-n-Om, preferred concentration 1-15%, based on amount of the mixture meter,

And/or

- CPY-n-Om and CLY-n-Om, preferred concentration 1-15%, based on amount of the mixture meter.

The invention further relates to being sought with active matrix based on ECB, VA, particularly PM-VA, PS-VA, IPS or FFS effect The electrical-optical display of location, it is characterised in that it is dielectric comprising being used as, according to claim 1-10 one or more liquid Crystalline medium.

According to the liquid crystal media of the present invention preferably from≤- 20 DEG C to >=70 DEG C, particularly preferably from≤- 30 DEG C to >=80 DEG C, Very particularly preferably there is nematic phase from≤- 40 DEG C to >=90 DEG C.

Term " having nematic phase " means one side at corresponding temperature herein, is not observed at low temperature near Crystalline phase and crystallization, on the other hand begun to warm up from nematic phase still not limpid.Research at low temperature is at the corresponding temperature Carry out in flow viscometer, and have by being stored in the testing cassete corresponding to the thickness degree of electrical-optical application at least Checked within 100 hours.If the storage stability reaches 1000h or longer in corresponding testing cassete at a temperature of -20 DEG C, It is stable at this temperature then to think the medium.At a temperature of -30 DEG C and -40 DEG C, the corresponding time is 500h respectively And 250h.At high temperature, clearing point is tested by conventional method in capillary.

Liquid crystal compound preferably has kinematic viscosity v at least 60K nematic phase range and 20 DEG C₂₀Up to 30mm²·s^-1。

Birefringence value Δ n in liquid crystal compound preferably >=0.15 is particularly >=0.18.

It is -0.5 to -8.0 according to the Δ ε of the liquid crystal compound of the present invention, particularly -2.5 to -6.0, wherein Δ ε is represented Dielectric anisotropy.Rotary viscosity γ at 20 DEG C₁Preferably≤165mPas, particularly≤140mPas.

Relatively low threshold voltage (V is had according to the liquid crystal media of the present invention₀).Preferred scope is 1.7V-3.0V, especially It is preferred that≤2.5V, and very particularly preferably≤2.3V.

For the present invention, unless otherwise indicated, term " threshold voltage " represents capacitive threshold value (V₀), also referred to as Freedericks threshold values.

In addition, high voltage Bao Te ratios are had in liquid crystal cells according to the liquid crystal media of the present invention.

Generally, the liquid crystal media with low addressing voltage or threshold voltage is than those with higher addressing voltage or threshold value electricity There is the liquid crystal media of pressure lower voltage to keep ratio, and vice versa.

For the present invention, term " positive dielectric compound " represents Δ ε ＞ 1.5 compound, term " dielectric neutrality chemical combination Thing " represents the compound of -1.5≤Δ ε≤1.5, and term " negative dielectric compound " represents Δ ε ＜ -1.5 compound.Change herein The dielectric anisotropy of compound is measured by dissolving 10% compound in liquid crystal host, and at least one test In the case of each arranged with similar and uniform outer surface in box with 20 μm of thickness degree under 1kHz, measurement gained mixture Electric capacity.The voltage of measurement is usually 0.5V-10V, but the capacitance threshold value always than the corresponding liquid crystal compound of research is low.

All it is DEG C to represent for all temperature value of the present invention.

Be suitable for all VA-TFT according to the mixture of the present invention to apply, for example, PM-VA, VAN, MVA, (S)-PVA, ASV, PSA (the lasting VA of polymer) and PS-VA (VA of polymer stabilizing).They are further adapted to the IPS with negative Δ ε (being changed in plane) and FFS (fringing field conversion) application.

According to the present invention nematic liquid crystal mixtures generally comprise two kinds of components A and B in the display, wherein they from Body by one or more individually compound groups into.

Component A has significant negative dielectric anisotropic and provides≤- 0.5 dielectric anisotropy.Except a kind of or Outside the compound of a variety of Formulas I and Formulas I A and/or IB compound, it preferably comprises Formula II A, IIB and/or IIC compound, The also compound of formula III.

Component A ratio is preferably between 45-100%, particularly preferably between 60-100%.

For component A, one single compounds of Δ ε≤- 0.8 are preferably selected.It is total with mixture Body meter, component A ratio is smaller, and this value must be more negative.

Component B, which has, is not more than 30mm at obvious nematic and 20 DEG C²·s^-1Kinematic viscosity, be preferably no greater than 25m²·s^-1。

Single compound particularly preferably in component B is that have to be not more than 18mm at 20 DEG C²·s^-1Kinematic viscosity Extremely low viscosity nematic crystal, preferably no greater than 12mm²·s^-1。

Component B is the nematic of monotropic transformation or change, without mesomorphic phase and can be in liquid crystal compound The appearance of mesomorphic phase is prevented when being reduced to low-down temperature.If for example, the various materials of high nematic are added to mesomorphic Liquid crystal compound in, the nematic of these materials can be compared by the inhibition level of the mesomorphic phase of realization.

Mixture can also optionally include component C, and it contains the compound of the dielectric anisotropy with Δ ε >=1.5 Composition.These so-called iso/positive compounds content typically in the mixture of negative dielectric anisotropic is≤20% weight, based on mixed Compound total amount meter.

Those skilled in the art's known number of suitable materials from document.Particularly preferably use the compound of formula III.

In addition, these liquid crystalline phases also comprise more than 18 kinds of component, preferably 18-25 kinds component.

In addition to one or more Formulas I and Formulas I A and/or IB compound, 4-15 kinds are further preferably mutually included, particularly 5-12 kinds, and particularly preferably 10 kinds of Formula II A, IIB of ＜ and/or the compound of IIC and optional formula III.

Except Formulas I and Formulas I A and/or IB compound and the change of Formula II A, IIB and/or IIC and optional formula III Outside compound, there can also be other compositions, such as its content is account for amount of the mixture most 45%, but preferably up to 35%, especially up to 10%.

Other compositions are preferably selected from nematic or nematic material, particularly known material, from azoxybenzene, benzene methylene Base aniline, biphenyl, terphenyl, phenyl or cyclohexyl benzoate, phenyl or cyclohexyl ring cyclohexane carboxylic-acid salt, phenyl hexamethylene Alkane, cyclohexyl biphenyl, cyclohexyl ring hexane, cyclohexyl naphthalene, Isosorbide-5-Nitrae-dicyclohexyl biphenyl or hexamethylene yl pyrimidines, phenyl or Cyclohexyl dioxane, optional halo 1,2- talan, benzyl phenyl ether, tolans and substituted cinnamate Middle selection.

Being suitable as the most important compound of such liquid crystal phase constituent can be represented with formula RG

R²⁰-L-G-E-R²¹ RG

Wherein L and E represents by Isosorbide-5-Nitrae-disubstituted benzene and cyclohexane ring, 4 respectively, 4 '-disubstituted biphenyl, hexamethylene Base benzene and the disubstituted pyrimidine of cyclohexyl ring Hexane system, 2,5- and 1,3- dioxane ring, the disubstituted naphthalenes of 2,6-, two-and Carbon or heterocyclic system in the group that tetrahydronaphthalene, quinazoline and tetrahydro quinazoline are formed,

G expression-CH=CH--N (O)=N-

- CH=CQ--CH=N (O)-

-C≡C- -CH₂-CH₂-

-CO-O- -CH₂-O-

-CO-S- -CH₂-S-

- CH=N--COO-Phe-COO-

-CF₂O--CF=CF-

-OCF₂- -OCH₂-

-(CH₂)₄- -(CH₂)₃O-

Or C -- C single bond, Q represent halogen (preferably chlorine) or-CN, and R²⁰And R²¹Each represent that there are most 18 The alkyl of carbon atom (preferably up to 8 carbon atoms), alkenyl, alkoxy, alkoxyalkyl either alkoxy-carbonyl oxy or One of these groups alternatively represent CN, NC, NO₂、NCS、CF₃、SF₅、OCF₃, F, Cl or Br.

In most of in these compounds, R²⁰And R²¹Be each other it is different, one of these groups be usually alkyl or Alkoxy.The deformation of other substituents suggested is also conventional.Many such materials or also its mixture are commercially available. All these materials can be made by known in the literature method.

It is self-evident that for those skilled in the art, can be with according to VA, IPS or FFS mixture of the present invention Include the compound that for example wherein H, N, O, Cl and F have been substituted by corresponding isotope.

Polymerizable compound, so-called reactive mesogen (RM) (such as disclosed in U.S.6,861,107) can be with The further 0.12-5% weight in terms of based on mixture, particularly preferred 0.2-2% weight are added to mixing of the present invention In thing.These mixtures can also be optionally comprising the initiator as described in U.S.6,781,665.The initiator (such as Irganox-1076 (BASF SE)) preferably it is added to 0-1% amount in the mixture containing polymerizable compound.This species The mixture of type can be used in the VA patterns (PS-VA) or PSA (VA that polymer maintains) of so-called polymer stabilizing, wherein instead The polymerization of answering property mesomorphic occurs in liquid crystal compound.The prerequisite for realizing this situation be the liquid crystal compound in itself Any polymerizable composition is not contained.

In a preferred embodiment of the present invention, polymerizable compound is selected from formula M compound,

R^Ma-A^M1-(Z^M1-A^M2)_m1-R^Mb M

Wherein each group has following meanings：

R^MaAnd R^MbP, P-Sp-, H, halogen, SF are each represented independently of one another₅、NO₂, alkyl, alkenyl or alkynyl, wherein Group R^MaAnd R^MbIt is at least one it is preferred represent either containing group P or P-Sp-,

P represents polymerizable groups,

Sp represents spacer group or singly-bound,

A^M1And A^M2Aryl, heteroaryl, alicyclic hydrocarbon radical or heterocyclic group are each represented independently of one another, preferably with 4- 25 annular atoms, preferably carbon atom, it can also include or comprising condensed ring, and wherein can it is optionally monosubstituted by L or It is polysubstituted,

L represents P, P-Sp-, OH, CH₂OH、F、Cl、Br、I、-CN、-NO₂、-NCO、-NCS、-OCN、-SCN、- C (=O) N (R^x)₂,-C (=O) Y¹,-C (=O) R^x、-N(R^x)₂, the optional silicyl that substitutes, there is times of 6-20 C atom The aryl in generation is chosen, either there is the straight chain of 1-25 C atom or alkyl, alkoxy, alkyl-carbonyl, the alkoxy carbonyl of side chain Base, alkyl carbonyl epoxide or alkoxy-carbonyl oxy, in addition, one or more H can be by F, Cl, P or P- Sp- is substituted, preferably by P, P-Sp-, H, OH, CH₂OH, halogen, SF₅、NO₂, alkyl, alkenyl or alkynyl substitute,

Y¹Represent halogen,

Z^M1Expression-O- ,-S- ,-CO- ,-CO-O- ,-OCO- ,-O-CO-O- ,-OCH₂-、-CH₂O-、-SCH₂-、- CH₂S-、-CF₂O-、-OCF₂-、-CF₂S-、-SCF₂-、-(CH₂)_n1-、-CF₂CH₂-、-CH₂CF₂-、-(CF₂)_n1- ,-CH=CH- ,- CF=CF- ,-C ≡ C- ,-CH=CH- ,-COO- ,-OCO-CH=CH-, CR⁰R⁰⁰Or singly-bound,

R⁰And R⁰⁰H or the alkyl with 1-12 C atom are each represented independently of one another,

R^xP, P-Sp-, H, halogen, straight chain, side chain or the cycloalkyl with 1-25 C atom are represented, in addition, Wherein one or more non-conterminous CH₂Group can in a manner of O and/or S atom are not joined directly together by-O- ,-S- ,- CO- ,-CO-O- ,-O-CO- ,-O-CO-O- are substituted, and one or more H atom can be by F, Cl, P or P-Sp- in addition Substitute, there is optional substituted aryl either aryloxy group or the optional substitution with 2-40 C atom of 6-40 C atom Heteroaryl or heteroaryloxy,

M1 expressions 0,1,2,3 or 4, and

N1 represents 1,2,3 or 4,

Wherein group R^Ma、R^MbIn at least one, preferably one, two or three, particularly preferably one or two and Substituent L represents that group P either P-Sp- or includes at least one group P or P-Sp-.

Particularly preferred formula M compound is following compounds, wherein

R^MaAnd R^MbP, P-Sp-, H, F, Cl, Br, I ,-CN ,-NO are each represented independently of one another₂、-NCO、-NCS、- OCN、-SCN、SF₅Or straight chain with 1-25 C atom or the alkyl of side chain, in addition, wherein one or more not phases Adjacent CH₂Group can be in a manner of O and/or S atom be joined directly together by-C (R⁰)=C (R⁰⁰)、-C≡C-、-N(R⁰⁰)-、 O- ,-S- ,-CO- ,-CO-O- ,-O-CO- ,-O-CO-O- substitute, in addition one or more H can by F, Cl, Br, I, CN, P or P-Sp- are substituted, wherein R^MaAnd R^MbGroup it is at least one it is preferred represent either comprising group P or P-Sp-,

A^M1And A^M2Isosorbide-5-Nitrae-phenylene, naphthalene-Isosorbide-5-Nitrae-diyl, naphthalene -2,6- diyl, phenanthrene -2,7- are each represented independently of one another Diyl, anthracene -2,7- diyl, fluorenes -2,7- diyl, cumarin, flavones are (in addition wherein in one or more of these groups CH bases Group can be substituted by N), hexamethylene-Isosorbide-5-Nitrae-diyl (wherein one or more non-conterminous CH₂Group is substituted by O and/or S), 1, 4- cyclohexenyl groups, two rings [1.1.1]-pentane -1,3- diyl, two rings [2.2.2]-octane-Isosorbide-5-Nitrae-diyl, loop coil [3.3]-heptan Alkane -2,6- diyl, piperidines-Isosorbide-5-Nitrae-diyl, decahydronaphthalenes -2,6- diyl, 1,2,3,4-tetrahydro-naphthalene -2,6- diyl, dihydro Indenes -2,5- diyl or octahydro -4,7- methane indenes -2,5- diyl, and all groups can with it is unsubstituted or by L it is monosubstituted or It is polysubstituted,

L represents P, P-Sp-, OH, CH₂OH、F、Cl、Br、I、-CN、-NO₂、-NCO、-NCS、-OCN、-SCN、- C (=O) N (R^x)₂,-C (=O) Y¹,-C (=O) R^x、-N(R^x)₂, the optional silicyl that substitutes, there is times of 6-20 C atom The aryl in generation is chosen, either there is the straight chain of 1-25 C atom or alkyl, alkoxy, alkyl-carbonyl, the alkoxy carbonyl of side chain Base, alkyl carbonyl epoxide or alkoxy-carbonyl oxy, one or more H can be by F, Cl, P or P-Sp- in addition Substitute,

P represents polymerizable groups,

Y¹Represent halogen,

R^xRepresent P, P-Sp-, H, halogen, have 1-25 C atom straight chain, side chain or cycloalkyl (in addition its The middle non-conterminous CH of one or more₂Group can in a manner of O and/or S atom are not joined directly together by-O- ,-S- ,-CO- ,- CO-O- ,-O-CO- ,-O-CO-O- are substituted, and one or more H can be substituted by F, Cl, P or P-Sp- in addition), tool There are the optional substituted aryl of 6-40 C atom either aryloxy group or the optional substituted heteroaryl with 2-40 C atom Or heteroaryloxy.

Very particularly preferably formula M compound, wherein R^MaAnd R^MbOne or both of all represent P or P-Sp-.

For the basic present invention liquid crystal media and PS-VA displays or PSA displays, it is being adapted to and preferable RM is the compound selected from such as following formula：

Wherein each group has following meanings：

P¹And P²Polymerizable groups are each represented independently of one another, preferably with above-mentioned or following for containing described in P One kind of justice, particularly preferred acrylate-based, methacrylic acid ester group, fluoro acrylic ester base, oxetanyl, ethene Base, ethyleneoxy or epoxy radicals,

Sp¹And Sp²Singly-bound or spacer group are each represented independently of one another, preferably with above-mentioned or following for Sp One kind of described implication, particularly preferred expression-(CH₂)_p1-、-(CH₂)_p1-O-、-(CH₂)_p1- CO-O- or-(CH₂)_p1-O- CO-O-, wherein p1 are 1-12 integers, and wherein neighbouring ring is connected by O atom in last described group,

In addition wherein, one or more group P¹-Sp¹- and P²-Sp²- R can be represented^aa, condition is group P¹-Sp¹- and P²-Sp²- at least one do not indicate that R^aa。

R^aaRepresent H, F, Cl, CN or there is the straight or branched alkyl of 1-25 C atom (in addition wherein, One or more non-conterminous CH₂Group can be independently of one another in a manner of O and/or S atom are not joined directly together by-C (R⁰) =C (R⁰⁰)、-C≡C-、-N(R⁰⁰)-,-O- ,-S- ,-CO- ,-CO-O- ,-O-CO- ,-O-CO-O- substitute, in addition wherein, one Either multiple H can be by F, Cl, CN or P¹-Sp¹- substitute), particularly preferably have 1-12 C atom it is straight or branched, Optionally the alkyl of single or multiple fluorine substitution, alkoxy, alkenyl, alkynyl, alkyl-carbonyl, alkoxy carbonyl, alkyl carbonyl epoxide or Alkoxy-carbonyl oxy (wherein alkenyl and alkynyl are with least two C atoms and branched group is with least three C atoms),

R⁰And R⁰⁰It is each identical or different independently of one another and at each occurrence, represent H or 1-12 C atom Alkyl,

R^yAnd R^zH, F, CH are each represented independently of one another₃Or CF₃,

Z¹Expression-O- ,-CO- ,-C (R^yR^z)-or-CF₂CF₂-,

Z²And Z³Respective expression-CO-O- ,-O-CO- ,-CH independently of one another₂O-、-OCH₂-、-CF₂O-、-OCF₂- or Person-(CH₂)_n-, wherein n is 2,3 or 4,

When L occurs every time it is identical or differently represent F, Cl, CN or straight chain with 1-12 C atom or Optional single fluoro of person's side chain or alkyl, alkoxy, alkenyl, alkynyl, alkyl-carbonyl, alkoxy carbonyl, the alkyl oxycarbonyl of more fluoro Base epoxide or alkoxy-carbonyl oxy, preferably F,

L ' and L " each represents H, F or Cl independently of one another,

R represents 0,1,2,3 or 4,

S represents 0,1,2 or 3,

T represents 0,1 or 2,

X represents 0 or 1.

In formula M1-M33 compound,

It is preferred thatOr

It is identical or differently when wherein L occurs every time, there are one of above-mentioned or following implications provided, and be preferably F、Cl、CN、NO₂、CH₃、C₂H₅、C(CH₃)₃、CH(CH₃)₂、CH₂CH(CH₃)C₂H₅、OCH₃、OC₂H₅、COCH₃、COC₂H₅、 COOCH₃、COOC₂H₅、CF₃、OCF₃、OCHF₂、OC₂F₅Or P-Sp-, highly preferred F, Cl, CN, CH₃、C₂H₅、OCH₃、COCH₃、 OCF₃Or P-Sp-, more preferably F, Cl, CH₃、OCH₃、COCH₃Or OCF₃, particularly F or CH₃。

Preferred spacer group Sp is selected from formula Sp '-X ' so that and group " P-Sp- " mutually should be formula " P-Sp '-X '-", wherein

Sp ' represents there is a 1-20 C atom, the alkylidene of preferably 1-12 C atom, its optionally by F, Cl, Br, I or CN are monosubstituted or polysubstituted, and in addition wherein, one or more non-conterminous CH₂Group can be independently of one another By-O- ,-S- ,-NH- ,-NR in a manner of O and/or S atom are not joined directly together⁰-、-SiR⁰R⁰⁰-、-CO-、-COO-、-OCO-、- OCO-O-、-S-CO-、-CO-S-、-NR⁰-CO-O-、-O-CO-NR⁰-、-NR⁰-CO-NR⁰- ,-CH=CH- or-C ≡ C- replace Generation,

X ' expressions-O- ,-S- ,-CO- ,-COO- ,-OCO- ,-O-COO- ,-CO-NR⁰-、-NR⁰-CO-、-NR⁰- CO-NR⁰-、-OCH₂-、-CH₂O-、-SCH₂-、-CH₂S-、-CF₂O-、-OCF₂-、-CF₂S-、-SCF₂-、-CF₂CH₂-、- CH₂CF₂-、-CF₂CF₂- ,-CH=N- ,-N=CH- ,-N=N- ,-CH=CR⁰-、-CY²=CY³- ,-C ≡ C- ,-CH=CH- COO- ,-OCO-CH=CH- or singly-bound,

R⁰And R⁰⁰H or the alkyl with 1-12 C atom are each represented independently of one another,

Y²And Y³H, F, Cl or CN are each represented independently of one another,

X ' is preferably-O- ,-S- ,-CO- ,-COO- ,-OCO- ,-O-COO- ,-CO-NR⁰-、-NR⁰-CO-、-NR⁰-CO- NR⁰- or singly-bound.

Typical spacer group Sp ' is, such as-(CH₂)_p1-、-(CH₂CH₂O)_q1-CH₂CH₂-、-CH₂CH₂-S- CH₂CH₂-、-CH₂CH₂-NH-CH₂CH₂- or-(SiR⁰R⁰⁰-O)_p1-, wherein p1 is 1-12 integer, and q1 is 1-3 integer, and And R⁰And R⁰⁰With above-mentioned implication.

Particularly preferred group-X '-Sp '-it is-(CH₂)_p1-、-O-(CH₂)_p1-、-OCO-(CH₂)_p1-、-OCOO-(CH₂)_p1-。

Particularly preferred group Sp ', such as be straight chain ethylidene, propylidene, butylidene, pentylidene, Asia in each case Hexyl, heptamethylene, octamethylene, nonylene, decylene, sub- hendecane base, sub- 12 carbon alkyl, sub- octadecyl, sub- second Epoxide ethylidene, methylene epoxide butylidene, ethylidene sulfenyl ethylidene, ethylene-N-methyl imino group ethylidene, 1- methyl are sub- Alkyl, ethenylidene, allylidene and butenylidene.

Within a context, using following meanings：

Term " mesomorphic group " as used herein is well known by persons skilled in the art and on the books in the literature, and Group is will be understood to refer to, the group essentially contributes to cause due to attracting the anisotropy with repulsive interactions Occurs liquid crystal (LC) phase in low molecule amount or polymeric material.Compound (mesomorphic compound) comprising mesomorphic group needs not be itself There must be LC phases.For mesomorphic compound, it is also possible to LC occur afterwards mixing and/or polymerizeing with other compounds Phase.Typical mesomorphic compound is, such as rigid rod or discoidal unit.In Pure Appl. Chem.73 (5), Provided in 888 (2001) and C.Tschierske, G.Pelzl, S.Diele, Angew.Chem.2004,116,6340-6368 The general introduction of the used term and definition relevant with mesomorphic or LC compounds.

Term " spacer group " as used herein or " Sp " are well known by persons skilled in the art and had in the literature Record, see, for example, Appl.Chem.73 (5), 888 (2001) and C.Tschierske, G.Pelzl, S.Diele, Angew.Chem.2004,116,6340-6368.Unless otherwise indicated, the term " spacer group " as used herein or " interval " Flexible group is will be understood to refer to, mesomorphic group and polymerizable groups are connected to each other by it in polymerizable mesomorphic compound.

Term " reactive mesogen " as used herein and " RM " will be understood to refer to containing a mesomorphic group and one Or the compound of multiple functional groups' (being also considered as polymerizable groups or group P) for being suitable for polymerization.

Term " low molecular weight compound " as used herein and " not polymerizable compound " will be understood to refer to chemical combination Thing, usually monomeric compound, its do not contain and be suitable under general condition well known by persons skilled in the art (particularly with In RM polymerization under conditions of) polymerization functional group.

Term " organic group " as used herein will be understood to refer to carbon or hydrocarbyl group.

Term " carbon-based " as used herein will be understood to refer to the unit price comprising at least one carbon atom or multivalence is organic Group, wherein this kind of group does not contain other atoms (such as-C ≡ C-) either or comprising other one or more atoms, example Such as N, O, S, P, Si, Se, As, Te or Ge (such as carbonyl).Term " alkyl " is represented also comprising one or more H atoms and appointed Selection of land one or more hetero atom such as N, O, S, P, Si, Se, As, Te or Ge's is carbon-based.

Term " halogen " as used herein will be understood to refer to F, Cl, Br or I.

Carbon-based or alkyl can be saturation or undersaturated group.Unsaturated group is, for example, aryl, alkenyl or alkynyl.Tool Have more than 3 C atoms carbon or hydrocarbyl group can with straight chain, side chain and/or ring-type and also include coiled strand or condensed ring.

Term " alkyl " as used herein, " aryl ", " heteroaryl " will be understood as including the group of multivalence, it is similar for example Alkylene, arlydene, inferior heteroaryl.

Term " aryl " as used herein will be understood to refer to aromatic series carbon group or its deriveding group, and term " heteroaryl " will be understood to refer to include the above-mentioned aryl of one or more hetero atoms.

It is preferred that carbon and hydrocarbyl group are optionally substituted with 1-40, preferably 1-25, particularly preferred 1-18 C atoms Alkyl, alkenyl, alkynyl, alkoxy, alkyl-carbonyl, alkoxy carbonyl, alkyl-carbonyl oxygen and alkoxy-carbonyl oxy；With 6-40 Individual C atoms, the optional substituted aryl or aryloxy group of preferably 6-25 C atom；Or what is optionally substituted has 6-40 preferably The alkylaryl of 6-25 C atom, aryl alkyl, alkylaryloxy, aryl alkyl epoxide, aryl carbonyl, aryl carbonyl oxygen, Aryl carbonyl epoxide and aryl carbonyl oxygen epoxide.

Further preferably carbon-based and alkyl is C₁-C₄₀Alkyl, C₂-C₄₀Alkenyl, C₂-C₄₀Alkynyl, C₃-C₄₀Pi-allyl, C₄-C₄₀ Alkyl dialkylene, C₄-C₄₀Polyene-based, C₆-C₄₀Aryl, C₆-C₄₀Alkylaryl, C₆-C₄₀Aryl alkyl, C₆-C₄₀Alkylaryl oxygen Base, C₆-C₄₀Alkoxy aryl, C₂-C₄₀Heteroaryl, C₄-C₄₀Cycloalkyl, C₄-C₄₀Cycloalkenyl group etc..Particularly preferably represent C₁-C₂₂Alkane Base, C₂-C₂₂Alkenyl, C₂-C₂₂Alkynyl, C₃-C₂₂Pi-allyl, C₄-C₂₂Alkyl dialkylene, C₆-C₁₂Aryl, C₆-C₂₀Aryl alkyl and C₂-C₂₀Heteroaryl.

Further preferably carbon-based and alkyl is straight chain, side chain or the ring for having 1-40 C atom, preferably 1-25 C atom Alkyl, it is unsubstituted or is mono or poly substituted by F, Cl, Br, I or CN, and wherein one or more not phases Adjacent CH₂Group can be independently of one another in a manner of O and/or S atom are not joined directly together by-C (R^x)=C (R^x)-、-C≡ C-、-NR^x- ,-O- ,-S- ,-CO- ,-CO-O- ,-O-CO- ,-O-CO-O- substitute.

R^xIt is preferred that represent H, halogen, straight chain, side chain or the cyclic alkyl with 1-25 C atom, in addition wherein, one or Multiple non-conterminous C atoms can by-O- ,-S- ,-CO- ,-CO-O- ,-O-CO- ,-O-CO-O- substitute, and one of them or Multiple H atoms can be substituted by fluorine, optional substituted aryl or aryloxy group or former with 5-40 C with 6-40 C atom The optional substituted heteroaryl or heteroaryloxy of son.

It is preferred that alkyl is, such as methyl, ethyl, n-propyl, isopropyl, normal-butyl, isobutyl group, sec-butyl, the tert-butyl group, 2- Methyl butyl, n-pentyl, tertiary pentyl, cyclopenta, n-hexyl, cyclohexyl, 2- ethylhexyls, n-heptyl, suberyl, n-octyl, Cyclooctyl, n-nonyl, positive decyl, n-undecane base, dodecyl, dodecyl, trifluoromethyl, perfluoro-n-butyl group, 2,2, 2- trifluoroethyls, perfluoro capryl, perfluoro hexyl etc..

It is preferred that alkenyl is, for example, vinyl, acrylic, cyclobutenyl, pentenyl, cyclopentenyl, hexenyl, cyclohexenyl group, Heptenyl, cycloheptenyl, octenyl, cyclo-octene base etc..

It is preferred that alkynyl is, such as acetylene, propine, butine, pentyne, hexin, heptyne, octyne etc..

It is preferred that alkoxy is, such as methoxyl group, ethyoxyl, 2- Mehtoxy-ethoxies, positive propoxy, isopropoxy, positive fourth It is epoxide, isobutoxy, sec-butoxy, tert-butoxy, 2- methylbutoxy groups, n-pentyloxy, positive hexyloxy, positive epoxide in heptan, just pungent Epoxide, positive nonyl epoxide, n-decyloxy, n-undecane epoxide, n-dodecane epoxide etc..

It is preferred that amino is, such as dimethylamino, methylamino, methylphenylamino, phenylamino etc..

Aryl and heteroaryl can be monocyclic or polycyclic, i.e., they can have one (such as phenyl) or two or more Individual ring, its can also be (such as dibiphenylyl) that condensed ring (such as naphthyl) is either covalently attached or comprising thick sum or chain The ring of connection.Heteroaryl includes one or more hetero atoms, is preferably selected from O, N, S and Se.

Mono-, di- or three cyclophane bases particularly preferably with 6-25 C atom and the mono-, di- or three with 2-25 C atom Ring heteroaryl, it is optional comprising condensed ring and optional substituted.Particularly preferred 5-, 6- or 7- member aryl and heteroaryl, its In, one or more CH can be substituted in a manner of O and/or S atom are not joined directly together by N, S or O in addition.

Preferred aryl groups are, such as phenyl, dibiphenylyl, terphenyl, [1,1 '：3 ', 1 "] terphenyl -2 '-base, naphthalene Base, anthryl, binaphthyl, phenanthrene, pyrene, dihydropyrene, in the wrong, perylene, aphthacene, pentacene, BaP, fluorenes, indenes, indenofluorene, spiral shell Double fluorenes etc..

It is preferred that heteroaryl is, such as 5- yuan of rings, such as pyrroles, pyrazoles, imidazoles, 1,2,3-triazoles, 1,2,4- triazoles, tetrazolium, Furans, thiophene, selenophen, oxazole, isoxazoles, 1,2- thiazoles, 1,3-thiazoles, 1,2,3- oxadiazoles, 1,2,4- oxadiazoles, 1,2,5- Oxadiazole, 1,3,4- oxadiazoles, 1,2,3- thiadiazoles, 1,2,4- thiadiazoles, 1,2,5- thiadiazoles, 1,3,4- thiadiazoles；6- members Ring such as pyridine, pyridazine, pyrimidine, pyrazine, 1,3,5-triazines, 1,2,4- triazines, 1,2,3- triazines, 1,2,4,5- tetrazines, 1,2,3, 4- tetrazines, 1,2,3,5- tetrazines；Or condensed ring group, such as indoles, iso-indoles, indolizine, indazole, benzimidazole, benzo three Azoles, purine, naphtho- imidazoles, phenanthro- imidazoles, pyridazine imidazoles, pyrazine imidazoles, quinoxaline imidazoles, benzoxazole, Nai Bing oxazoles, anthra Oxazole, Fei Bing oxazole, isoxazoles, benzothiazole, benzofuran, isobenzofuran, dibenzofurans, quinoline, isoquinolin, butterfly Pyridine, benzo -5,6- quinoline, benzo -6,7- quinoline, benzo -7,8- quinoline, benzisoquinoline, acridine, phenthazine, azophenlyene, benzo Pyridazine, benzo pyrimidine, quinoxaline, Dencentan, naphthyridines, azepine carbazole, benzo carboline, phenanthridines, phenanthroline, thieno [2,3b] Thiophene, thieno [3,2b] thiophene, dithienothiophene, isothiophene, dibenzothiophenes, diazosulfide thiophene；Or this The combination of a little groups.The heteroaryl can also be substituted or further fragrant by alkyl, alkoxy, alkylthio, fluorine, fluoro-alkyl Base or heteroaryl substitution.

(non-aromatic) alicyclic ring and heterocyclic group include two kinds of saturated rings, for example, only containing singly-bound and contain part Those of undersaturated ring, such as those may be also containing multikey.Heterocycle includes one or more hetero atoms, is preferably selected from Si, O, N, S and Se.

(non-aromatic) alicyclic ring and heterocyclic group can be monocyclic, such as only include a ring (such as hexamethylene), or Person is polycyclic, such as includes multiple rings (such as decahydronaphthalenes or double-octane).Particularly preferably saturated group.Further preferably tool There are the mono-, di- or three cyclic groups of 3-25 C atom, wherein optionally substituting comprising condensed ring and optionally.Further preferably 5-, 6-, 7- or 8- member carbon ring group, wherein one or more C atoms can be by Si replacements and/or one or more CH bases in addition Group can be substituted by N and/or one or more non-conterminous CH₂Group can be substituted by-O- and/or-S-.

It is preferred that alicyclic ring and heterocyclic group are, such as 5- members group such as pentamethylene, tetrahydrofuran, thiophane, pyrrolidines；6- Yuan of rings such as hexamethylene, Silinane, cyclohexene, oxinane, tetrahydrochysene thio-pyrylium, 1,3- dioxanes, 1,3- dithiane, piperazine Pyridine；7- members group such as cycloheptane；With condensed ring group such as tetrahydronaphthalene, decahydronaphthalenes, dihydroindene, two rings [1.1.1] pentane -1, 3- diyls, two rings [2.2.2]-octane-Isosorbide-5-Nitrae-diyl, loop coil [3.3] heptane -2,6- diyl, octahydro -4,7- methane indenes -2,5- Diyl.

Aryl, heteroaryl, carbon-based and alkyl optionally have one or more substituents, its be preferably selected from silicyl, Sulfo group, sulfonyl, formoxyl, amino, imido grpup, nitrile, sulfydryl, nitro, halogen, C_1-12Alkyl, C_6-12Aryl, C_1-12Alkoxy, The combination of hydroxyl or these groups.

Preferred substituents are, such as promote the group of solubility, such as alkyl or alkoxy；Electron withdraw group such as fluorine, nitro Or nitrile；Or it is suitable to the substituent for improving glass transition temperature (Tg), particularly bulky group such as uncle in the polymer Butyl or the aryl optionally substituted.

Preferred substituents, hereinafter also referred to " L ", for example, F, Cl, Br, I ,-CN- ,-NO₂-、-NCO-、-NCS-、- OCN ,-SCN ,-C (=O) N (R^x)₂,-C (=O) Y¹,-C (=O) R^x、-N(R^x)₂, wherein R^xWith above-mentioned implication, and Y¹Represent Halogen, the silicyl optionally substituted or the aryl with 6-40 C atom, preferably 6-20 C atom, and there is 1-25 C Straight or branched alkyl, alkoxy, alkyl-carbonyl, alkoxy carbonyl, alkyl carbonyl epoxide or the alkoxy-carbonyl oxy of atom, Wherein one or more H atoms are optionally substituted by F or Cl.

" substituted silicyl or aryl " is preferred to be represented by halogen ,-CN, R⁰、-OR⁰、-CO-R⁰、-CO-O-R⁰、-O- CO-R⁰Or-O-CO-O-R⁰Substitution, wherein R⁰With above-mentioned implication.

Particularly preferred substituent L is, for example, F, Cl, CN, NO₂、CH₃、C₂H₅、OCH₃、OC₂H₅、COCH₃、COC₂H₅、 COOCH₃、COOC₂H₅、CF₃、OCF₃、OCHF₂、OC₂F₅, it is phenyl in addition.

PreferablyOr

Wherein L has one of meaning given above.

Polymerizable groups P is suitable for the group of polymerisation, such as free radical or ionic chain polymerization, addition polymerization or polycondensation, Or it is suitable for the similar reaction of polymer, such as the addition or condensation on main polymer chain.It is particularly preferred to be suitable for chain The group of polymerization, particularly containing those of C=C double bonds or the keys of C ≡ C tri-, and it is suitable for the group of ring-opening polymerisation, such as Oxetanyl or epoxy radicals.

Preferred group P is selected from CH₂=CW¹-COO-、CH₂=CW¹-CO-、 CH₂=CW²-(O)_k3、CW¹=CH-CO- (O)_k3-、CW¹=CH-CO-NH-, CH₂=CW¹-CO-NH-、CH₃- CH=CH-O-, (CH₂=CH)₂CH-OCO-、(CH₂=CH-CH₂)₂CH-OCO-、(CH₂=CH)₂CH-O-、(CH₂=CH-CH₂)₂N-、(CH₂=CH-CH₂)₂N-CO-、HO-CW²W³-、HS-CW²W³-、HW²N-、HO-CW²W³-NH-、CH₂=CW¹-CO-NH-、CH₂ =CH- (COO)_k1-Phe-(O)_k2-、CH₂=CH- (CO)_k1-Phe-(O)_k2-, Phe-CH=CH-, HOOC-, OCN- and W⁴W⁵W⁶Si-, wherein W¹Represent H, F, Cl, CN, CF₃, phenyl or the alkyl with 1-5 C atom, particularly H, F, Cl or CH₃, W²And W³H or the alkyl with 1-5 C atom, particularly H, methyl, ethyl or n-propyl, W are each represented independently of one another⁴、 W⁵And W⁶Cl is each represented independently of one another, there is the oxa alkyl or oxa- carbonylic alkyl of 1-5 C atom, W⁷And W⁸Each that This independently represents H, Cl or the alkyl with 1-5 C atom, and Phe represents Isosorbide-5-Nitrae-phenylene, and it is optionally one or more L groups substitution defined above, and k₁、k₂And k₃0 or 1, k is each represented independently of one another₃It is preferred that represent 1.

Particularly preferred group P is CH₂=CH-COO-, CH₂=C (CH₃)-COO-、CH₂=CH-, CH₂=CH-O-, (CH₂= CH)₂CH-OCO-、(CH₂=CH)₂CH-O-、WithParticularly ethyleneoxy, it is acrylate-based, Methacrylic acid ester group, fluoro acrylic ester base, chloropropene perester radical, oxetanyl and epoxy radicals.

In order to produce the display of similar PSA displays, LC media are filled into display box, and the display box has Relative to two parallel planes of substrate and two electrodes, wherein at least one substrate is printing opacity and at least one substrate has There is one or two electrode.It is preferred that when applying voltage to electrode, in the LC media between the substrate of LC display boxes, component A polymerizable compound is (if a compound includes two or more by in-situ polymerization come polymerizeing or crosslinking Individual polymerizable group).Polymerization can be that a step is completed.It can also first be polymerize, optionally apply electricity in the first step Pressure is to produce inclination angle, and then, in second step polymerization procedure in the case where not applying voltage, polymerization or crosslinking are in the first step In still unreacted compound (" end solidification ").

Suitable or preferable polymerization is optional such as thermal polymerization or o photopolymerizable, preferably o photopolymerizable, particularly UV O photopolymerizable.Here, one or more initiators can be optionally added into.The reaction condition that is adapted to for polymerisation and suitable The initiator type and dosage of conjunction are well known by persons skilled in the art and on the books in the literature.For Raolical polymerizable Suitable has, such as commercially available light trigger Or(BASF SE).If using initiator, the preferred 0.001-5% weight of its ratio, particularly preferably 0.001-1% weight.

The polymerization of no initiator is also adapted to according to the polymerizable compound of the present invention, it is along with considerable excellent Point, such as relatively low material cost and be especially the reduction of because the initiator or catabolite of residual volume that may be present cause LC media pollution.Therefore polymerization can also be carried out in the case of no addition initiator.In particularly preferred embodiment party In case, LC media do not include the initiator of polymerization.

Polymerizable components (A) or LC media can also include one or two kinds of stabilizers to prevent that undesirable RM's is spontaneous Polymerization occurs, such as during storage or transport.The species and dosage of suitable stabilizer are well known by persons skilled in the art And record in the literature.It is particularly preferred that for example commercially available stabilizer comes fromSerial (Ciba AG), example Such as1076.If use stabilizer, then the total amount meter based on RM or polymerizable components A, its ratio are preferably 10-500,000ppm, particularly preferred 50-50,000ppm.

Polymerizable compound during particularly preferred LC media include 1,2 or 3.

Component (B) in further preferred LC media is LC compounds or LC mixtures, and it has Nematic liquid crystalline phase.

Further preferably according to the present invention achiral polymerizable compound and LC medium, wherein component (A) and/or (B) compound is only selected from and includes non-chiral compound.

Further preferred LC media, its polymerizable components or component (A) include one or more polymerizable compounds, and it is wrapped Containing two or more, preferred two or three polymerizable groups (double activated or more activity).

Further preferred display, such as PSA displays and LC media, wherein polymerizable components or component (A) only include One or more include the polymerizable compound of two or three polymerizable groups.

For example, suitable polymerizable compound is listed in table D.Preferably comprised according to liquid crystal media of the present invention 0.1-10% altogether, preferably 0.2-4.0%, the total amount of particularly preferred 0.2-2.0% polymerizable compound.

Particularly preferred formula M polymerizable compound.

Conventional additive can also be included according to the mixture of the present invention, such as stabilizer, antioxidant, UV absorb Agent, nano particle, micron particles etc..

For example, EP-A0240379 describes meets common geometric form according to the structure of liquid crystal display of the present invention Shape.

The following example is used to explain the present invention and not limiting the present invention.In context, percent data represents weight Percentage；Whole temperature are Celsius temperatures.

In this application, Isosorbide-5-Nitrae-cyclohexyl cyclization Isosorbide-5-Nitrae-phenylene ring is as follows：

Or

Or

Except Formula II A and/or IIB and/or IIC compound, the compound of one or more Formulas I and one or more formulas Outside IA and/or IB compound, mixture of the present invention preferably also includes one kind or more of following shown Table A compound Kind.

Table A

Use following abbreviations：

(n、m、m’、z：Each independently of one another 1,2,3,4,5 or 6；(O) C in context_mH_2m+1Represent OC_mH_2m+1Or C_mH_2m+1)

It can be used for be prepared by conventional method itself according to the liquid crystal compound of the present invention.Generally, the phase used The component of desired amount is dissolved in the component for being formed main component with small amount, is favourable at elevated temperatures.It is also likely to be The organic solvent of said components such as acetone, chloroform or methanol are mixed, after mixing thoroughly, then are for example removed by distillation Solvent.

By suitable additive, it can be changed in this way according to the liquid crystalline phase of the present invention so that they can be with For in any kind of such as ECB, VAN, PM-VA, IPS, GH or ASM-VA LCD display disclosed so far.

The dielectric can also include the well known by persons skilled in the art and more additives of record in the literature, Such as UV absorbents, antioxidant, nano particle and radical scavenger.For example, it may be possible to add 0-15% pleochroic dye, steady Determine agent or chiral dopant.The stabilizer being adapted to for mixture of the present invention, it is particularly those and is listed in table B 's.

For example, 0-15% pleochroic dye can be added, conducting salt, preferably ethyl dimethyl dodecyl can also be added The complex salt of the oxygen benzoates of ammonium -4- six, tetrabutylammonium tetraphenyl borate salts or crown ether is to improve electric conductivity or can add Change dielectric anisotropy, viscosity and/or nematic phase arrangement material (see, for example, Haller et al., Mol.Cryst.Liq.Cryst. volume 24, the 249-258 pages (1973)).For example, DE-A2209127,2240864, 2321632nd, such material has been recorded in 2338281,2450088,2637430 and 2853728.

The dopant that may be added in mixture of the present invention is given in table B.Mixed if mixture includes Miscellaneous dose, then its usage amount is 0.01-4% weight, preferably 0.1-1.0% weight.

Table B

For example, the stabilizer that can be added in the mixture of the present invention, as shown in table C, its amount is with the total of mixture Gauge, is most 10% weight, preferably 0.01-6% weight, special 0.1-3% weight.Preferred stabilizer particularly BHT derives Thing such as 2,6- di-t-butyl -4- alkylphenols and Tinuvin770.

Table C

For example, the amount of the stabilizer that can be added in the mixture according to the present invention referenced below is 0-10% weights Amount.(n represents 1-12 integer, preferably 1,2,3,4,5,6,7 or 8 here, and the methyl of end is not shown).

Wherein, n represents 1,2,3,4,5,6 or 7

Wherein, n represents 2,3,4 or 5, preferably n=5

It is 0-10% weight, particularly 1ppm-5% weight that LC media, which preferably comprise content, and particularly preferred 1ppm-1% is heavy The stabilizer of amount.It is preferred that LC media include one or more stabilizers for being selected from table C compounds.

For the suitable polymerizable compound (reactivity being preferably according to inventive mixture in PSA and PS-VA applications Mesomorphic) as shown in following table D：

Table D

Above and below,

V₀Represent 20 DEG C of lower threshold voltages, capacitive [V]

Δ n represents the optical anisotropy measured under the conditions of 20 DEG C and 589nm

Δ ε represents the dielectric anisotropy under the conditions of 20 DEG C and 1Hz

Cl.p. clearing point [DEG C] is represented

K₁Elastic constant is represented, " openings " deforms [pN] at 20 DEG C

K₃Represent elastic constant, at 20 DEG C " bending " deform [pN]

γ₁Represent the rotary viscosity [mPas] measured at 20 DEG C

Measured in magnetic field by spinning solution

LTS represents the low-temperature stability (nematic phase) measured in testing cassete

Display for threshold voltage measurement has 20 μm of two parallel external plates apart and in external plates The electrode layer of SE-1211 (Nissan Chemicals) layer is arranged under the overlay on side, it influences the evenly distributed of liquid crystal.

Unless otherwise indicated, concentration all in this application is to be related to respective mixtures or the component of mixture.Unless It is otherwise noted, the measurement such as " Merck Liquid Crystals, Physical Properties of of all physical properties Liquid Crystals " (state, in November, 1997, Merck KGaA, Germany) are described, and application temperature is 20 DEG C.

Mixture embodiment

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Claims (16)

1. the liquid crystal media of the mixture based on polar compound, it is characterised in that it includes the compound of at least one Formulas I,

With

The compound of at least one Formulas I A and/or IB based on entire mixture weight meter >=20%

Wherein

R¹And R^1*Alkyl or alkoxy with 1-15 C atom are each represented independently of one another, in addition wherein these groups In one or more CH₂Group can be independently of one another by-C ≡ C- ,-CF₂O- ,-CH=CH-,- O- ,-CO-O- ,-O-CO- are substituted in a manner of O atom is not directly connected to each other, and one or more H atom in addition It can be substituted by halogen, and

A represents 0 or 1,

L¹And L²F, Cl, CF are each represented independently of one another₃Or CHF₂, and

L³And L⁴H, F, Cl, CF are each represented independently of one another₃Or CHF₂,

The medium includes one or more Formulas I B compound.

2. liquid crystal media according to claim 1, it is characterised in that

L³And L⁴H or F is each represented independently of one another.

3. liquid crystal media according to claim 1, it is characterised in that the medium includes one or more Formulas I A compound.

4. according to the liquid crystal media of Claims 2 or 3, it is characterised in that the medium comprise at least Formulas I -1 to I-10 compound,

Wherein

Alkyl and alkyl^*The straight chained alkyl with 1-6 C atom is each represented independently of one another,

Alkenyl and alkenyl^*The straight-chain alkenyl with 2-6 C atom is each represented independently of one another,

Alkoxy and alkoxy^*The unbranched alkoxy with 1-6 C atom is each represented independently of one another, and

L¹And L²F or Cl is each represented independently of one another.

5. liquid crystal media according to claim 1, it is characterised in that the medium include at least one Formulas I A-1, IA-2, IA-3, IA-4 and IB-1 compound,

Wherein

Alkyl and alkyl^*The straight chained alkyl with 1-6 C atom is each represented independently of one another, and

Alkoxy each represents the unbranched alkoxy with 1-8 C atom independently of one another,

L³And L⁴H, F, Cl, CF are each represented independently of one another₃Or CHF₂。

6. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also include selected from Formula II A, IIB and One or more kinds of compounds of IIC compound,

Wherein

R^2A、R^2BAnd R^2CH is each represented independently of one another, and the alkyl with most 15 C atoms, the alkyl is unsubstituted, quilt CN or CF₃It is monosubstituted or at least monosubstituted by halogen, wherein one or more of these groups CH in addition₂Group can by- O-、-S-、-C≡C-、-CF₂O-、-OCF₂- ,-OC-O- or-O-CO- replace in a manner of O atom is not directly connected to each other Generation,

L^1-4F or Cl is each represented independently of one another,

Z²And Z^2’Singly-bound ,-CH are each represented independently of one another₂CH₂- ,-CH=CH- ,-CF₂O-、-OCF₂-、-CH₂O-、- OCH₂-、-COO-、-OCO-、-C₂F₄- ,-CF=CF- ,-CH=CHCH₂O-,

P represents 1 or 2,

Q expressions 0 or 1, and

V represents 1-6.

7. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium is also one or more kinds of comprising formula III compound,

Wherein

R³¹And R³²Straight chained alkyl, alkoxyalkyl or alkoxy with most 12 C atoms are each represented independently of one another, With

Represent

Z³Represent singly-bound ,-CH₂-CH₂- ,-CH=CH- ,-CF₂O-、-OCF₂-、-CH₂O-、-OCH₂-、-COO-、-OCO-、- C₂F₄-、-C₄H₉- ,-CF=CF-.

8. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also includes formula L-1 to L-11 extremely A kind of few compound,

Wherein

R、R¹And R²Each have independently of one another in claim 6 for R^2AShown implication, and alkyl represents there is 1-6 The alkyl of individual C atoms, and

S represents 1 or 2.

9. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also includes the one of formula T-1 to T-21 Kind or a variety of terphenyls,

Wherein

R represents straight chained alkyl or alkoxy with 1-7 C atom, and

M represents 1-6.

10. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also includes the one of formula O-1 to O-16 Kind or multiple compounds,

Wherein

R¹And R²Each have independently of one another in claim 6 to R^2AThe implication indicated.

11. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also includes one or more Formulas I n Indane compound,

Wherein

R¹¹、R¹²、R¹³Straight chained alkyl, alkoxy, alkoxyalkyl or alkenyl with 1-5 C atom are represented,

R¹²、R¹³It is also represented by halogen,

Represent

I represents 0,1 or 2.

12. according to the liquid crystal media of any one of claim 2 or 5, it is characterised in that the medium also includes at least one stabilizer, The stabilizer is selected from the group of following stabilizer,

Wherein, n represents 1,2,3,4,5,6 or 7

Wherein, n represents 2,3,4 or 5

。

13. prepare the method for the liquid crystal media according to any one of claim 1-12, it is characterised in that by the change of at least one Formulas I Compound and at least one Formulas I A and/or IB compound mix with least one other liquid-crystal compounds, and optionally add Enter additive.

14. purposes of any one of the claim 1-12 liquid crystal media in electrical-optical display.

15. the electrical-optical display with active array addressing, it is characterised in that it is dielectric comprising being used as, will according to right Seek the liquid crystal media of any one of 1-12.

16. electrical-optical display according to claim 15, it is characterised in that it is VA, PM-VA, PSA, PS-VA, PALC, FFS Or IPS displays.