| 摘要 |
A nematic liquid crystal composition includes a compound of formula (1) and a host mixture: wherein 'R' is chosen from C<SUB>n</SUB>H<SUB>2n+1</SUB>O, C<SUB>n</SUB>H<SUB>2n+1</SUB>, C<SUB>n</SUB>H<SUB>2n+1</SUB>S or C<SUB>n</SUB>H<SUB>2n-1</SUB>; 'n' is an integer of 1 to 15; 'A' is 'a' is 0 or 1; 'B' is -CH<SUB>2</SUB>CH<SUB>2</SUB>-, -C-C-, -C≡C- or b' is 0 or 1; 'D' is -CH<SUB>2</SUB>CH<SUB>2</SUB>-, -C-C- or -C≡C-; 'd' is 0 or 1; 'X' is H, F, Cl, Br, NCS or CN; and 'Y' is from NCS, SCN or F. A liquid crystal display apparatus employing the nematic liquid crystal composition has a high response speed and a high phase transition temperature. In addition, the nematic liquid crystal composition has an augmented birefringence and a dielectric anisotropy. The liquid crystal display apparatus using the nematic liquid crystal composition may have an enhanced brightness. |
