JP2006328400A5 - - Google Patents

Claims (2)

Component B comprising a compound having a dielectric anisotropy greater than 10.5;
2 . Component C comprising a compound having a dielectric anisotropy greater than 0 and up to 10.5;
-1.0-2 . Component D comprising a compound having a dielectric anisotropy in the range of 0 ;
The liquid crystal medium according to claim 1, comprising: Component B contains one or more compounds of formula II,

Where

Are independent of each other and, if there are two or more, are both independent of each other,

Represents
R ² , Y ^{21 to} Y ²⁴ and X ² have the meanings given to the corresponding parameters R ¹ , Y ^{11 to} Y ¹⁴ and X ¹ in claim 1, respectively.
Z ² is a single _{bond, -COO -, - CF 2 -CF} 2 -, - CF 2 -CH 2 -, - CH 2 -CF 2 -, - CH 2 -CH 2 -, - CH 2 -O-, Represents —O—CH ₂ —, —CF ₂ —O— or —O—CF ₂ —,
n represents 1 or 2,
And / or component C comprises one or more compounds of formula III,

Where

Is

Or

Represents
n represents 0 or 1,
R ³ , Y ³¹ , Y ³² and X ³ each have the meaning given in formula I to R ¹ , Y ¹¹ , Y ¹² and X ¹ which are the corresponding parameters in formula I according to claim 1. ,
Z ³¹ and ^{Z 32} are each, independently of one another, a single _{bond, -COO -, - CF 2 -CF} 2 -, - CF 2 -CH 2 -, - CH 2 -CF 2 -, - CH 2 -CH _{2 -, - CH 2 -O -} , - O-CH 2 -, - CF 2 -O- or -O-CF ₂ - represents,
X ³ represents F, CF ₃ or OCF ₃ ,
Y ³¹ and Y ³² represent H or F;
5. A liquid crystal medium according to claim 1, wherein component D comprises one or more compounds of the formula IV:

Where
R ⁴¹ and R ⁴² each independently of one another have the meaning given to R ¹ in claim 1;

and

Are independent of each other

Z ⁴ represents a single bond, —CH═CH—, —CH ₂ —CH ₂ — or —CF ₂ —CF ₂ —, and does not include a compound of formula III.