Nematic liquid crystal composition
AssigneeSamsung Electronics Co., Ltd.
InventorByeong-Seob Ban
Life of this patent
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Abstract
A nematic liquid crystal composition includes a compound of formula (1) and a host mixture: wherein ‘R’ is chosen from CnH2n+1O, CnH2n+1, CnH2n+1S or CnH2n−1; ‘n’ is an integer of 1 to 15; ‘A’ is ‘a’ is 0 or 1; ‘B’ is —CH2CH2—, —C═C—, —C≡C— or ‘b’ is 0 or 1; ‘D’ is —CH2CH2—, —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.
Claims10
A nematic liquid crystal composition comprising a compound of formula (1) and a host mixture which comprises compounds of formulae (2) to (15):
- wherein ‘R’ is any one selected from the group consisting of C1H21+1O, ClH2l+1 and ClH2l+1S (wherein l is an integer of 1 to 15), or “R” is CmH2m−1 (wherein m is an integer of 3 to 15);
- X is H, F, Cl, Br, NCS or CN;
- R1 is methyl;
- R2 is ethyl;
- R2d is vinyl;
- R3 is propyl;
- R3d is allyl;
- and R5 is pentyl.
A nematic liquid crystal composition comprising a compound of formula (1) and a host mixture comprising compounds of formula (2) to (8) and (12) to (1 8):
- wherein ‘R’ is any one selected from the group consisting of ClH2l+1O, ClH2l+1 and ClH2l+1S (wherein l is an integer of 1 to 15), or “R” is CmH2m−1 (wherein m is an integer of 3 to 15;
- X is H, F, Cl, Br, NCS or CN;
- R1 is methyl;
- R2 is ethyl;
- R2d is vinyl;
- R3 is propyl;
- R3d is allyl;
- and R5 is pentyl.
Dependencies are inferred from the claim text.