| 摘要 |
PROBLEM TO BE SOLVED: To obtain an element capable of half-tone display by curing a liquid crystal composition containing a liquid crystal (meth)acrylate monomer and a ferroelectric liquid crystal during or after alignment in the state showing a chiral smectic C phase. SOLUTION: Between a pair of transparent substrates, a liquid crystal composition containing a liquid crystal (meth)acrylate monomer in a concentration of 0.1-10 wt.%, a ferroelectric liquid crystal and optionally a photopolymerization initiator is cured by irradiation with ultraviolet rays or electron beams during or after alignment under applied direct current voltage in the state showing a chiral smectic C phase to obtain a liquid crystal display element. The ferroelectric liquid crystal is desirably one which shows a smectic A phase and a nematic phase in a temperature region above that of a chiral smectic C phase. In the formula, X is H or methyl: r is 0 or 1; six-membered rings A, B and C are each a group represented by formula III; Y<1> and Y<2> are each a single bond, -OCH2 -, -CH2 CH2 - or the like; and Y<3> is H, a halogen, cyano or the like. |
