Ferroelectric active matrix displays with wide operating temperature range

   
   

The active-matrix display contains a chiral smectic liquid-crystal mixture comprising at least one compound of the formula (I) R.sup.1 --(A.sup.1 --M.sup.1).sub.a --(A.sup.2 --M.sup.2).sub.b --A.sup.3 --X--B.sup.1 --(B.sup.2).sub.c --R.sup.2 (I). where the symbols are as defined in the description.

De actief-matrijsvertoning bevat een chiral smectic liquid-crystal mengsel bestaand minstens uit één samenstelling van de formule (I) R.sup.1 -- (A.sup.1 -- M.sup.1).sub.a -- (A.sup.2 -- M.sup.2).sub.b -- A.sup.3 -- X -- B.sup.1 -- (B.sup.2).sub.c -- R.sup.2 (I). waar de symbolen zoals die in de beschrijving worden bepaald zijn.

 
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