| abstract |
The present invention relates to a method of making a light valve operable in an optically transparent state and an opaque state and electrically switchable between an optically transparent state and an opaque state, wherein at least one mesogenic compound, at least one chiral compound, At least one polymerizable mesogenic compound provided in a layer containing a liquid crystal medium comprising at least one dichroic dye and at least one polymerizable mesogenic compound is photopolymerized. The invention also relates to a liquid crystal medium used in said process, to a light valve obtained or obtainable by carrying out said process, and to the use of the light valve in mobile devices. |