| abstract |
The present invention relates to compounds of formula (I) Wherein at least one of the radicals A 1 to A 5 represents a 1,4-naphthylene or 1,4- or 9,10-anthracenylene radical, and other variables are as defined in claim 1. The invention also includes a liquid crystal medium comprising the compound, components for high frequency technology comprising the liquid crystal medium, in particular a phase modulator and an ultrasonic array antenna. |