| abstract |
(57) [Summary] [Structure] The following general formula (I): (In the formula, Ph represents a phenyl group, R represents a linear alkyl group, When X is an oxygen atom, L is 5 to 8, m is 1, n is an integer of 1 or more, or L and m are 0 and n is an integer of 6 to 8, When X is a single bond, L is 5 to 8, m is 1 and n is an integer of 1 or more. ) A novel antiferroelectric liquid crystal substance represented by. [Effect] The present liquid crystal substance exhibits a high-speed response of 20 to 30 μsec near room temperature and can be used for a liquid crystal display device. |