| abstract |
The present invention relates to liquid crystalline media comprising one or more benzothiadiazol derivatives of formula (I), in which R 11 , R 12 , A 11 , A 12 , A 21 , A 22 , Z 11 , Z 12 , Z 21 , Z 22 , W, X 11 , X 12 , r and s have the meanings indicated in claim 1, to the use of such liquid crystal media for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows. |