selected from alkyl groups having 8 9 10 11 or 12 carbon atoms and r 2 is selected from alkyl groups having 4 5 6 or 8 carbon atoms str26 wherein r 1 is selected from alkyl groups having 8 9 10 11 or 12 carbon atoms and r 2 is selected from alkyl groups having 4 5 6 or 8 carbon atoms str27 wherein r 1 is selected from alkyl groups having 8 9 10 11 or 12 carbon atoms and r 2 is selected from alkyl groups having 4 5 6 or 8 carbon atoms str28 wherein r 1 is selected from alkyl groups having 8 9 10 11 or 12 carbon atoms and r 2 is selected from alkyl groups having 4 5 6 or 8 carbon atoms the antiferroelectric liquid crystal compound can be an antiferroelectric liquid crystal compound that includes at least one type of compound selected from each of the compounds represented by general formulas 1 2 3 and 4 the antiferroelectric liquid crystal compound represented by general formula 5 can be at least one type of compound of the group consisting of compounds indicated by general formula 5 1 through 5 4 below provided that in the case of containing the compounds indicated by the general formulas 1 1 and 1 6 at least one type of the compounds indicated by the general formulas 5 2 through.