Liquid crystal composition and liquid crystal display device
View Patent ↗The present invention is to provide such a liquid crystal composition that satisfies plural characteristic features selected from a wide temperature range of a nematic phase, a low viscosity, an appropriate optical anisotropy, a large negative dielectric anisotropy and a large specific resistance. The liquid crystal composition of the invention contains, as a first component, at least one compound selected from the group consisting of compounds represented by Formula (1-1) to (1-4); contains, as a second component, at least one compound selected from the group consisting of compounds represented by Formula (2-1) to (2-3); and has a negative dielectric anisotropy. In the following formulae, all the symbols are defined in claim 1
1. A liquid crystal composition containing, as a first component, at least one compound selected from the group consisting of compounds represented by Formula (1-1); containing, as a second component, at least one compound selected from the group consisting of compounds represented by Formula (2-3); and having a negative dielectric anisotropy:
wherein R 1 represents an alkyl or an alkenyl; R 2 represents an alkoxy; and R 3 represents an alkyl, an alkenyl or an alkoxy; and in these groups, each of the alkyl and the alkoxy has a carbon number of from 1 to 10, and the alkenyl has a carbon number of from 2 to 10.
2. The liquid crystal composition according to claim 1 , wherein a content of the first component is from 10 to 95% by weight, and a content of the second component is from 5 to 90% by weight, based on the total weight of the liquid crystal composition.
3. A liquid crystal composition containing, as a first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4); containing, as a second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3); containing, as a third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-5); and having a negative dielectric anisotropy:
wherein R 1 represents an alkyl or an alkenyl; R 2 represents an alkoxy; R 3 represents an alkyl, an alkenyl or an alkoxy; and in these groups, each of the alkyl and the alkoxy has a carbon number of from 1 to 10, and the alkenyl has a carbon number of from 2 to 10 .
4. The liquid crystal composition according to claim 3 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4), contains, as the second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), and contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-3).
5. The liquid crystal composition according to claim 3 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4), contains, as the second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), and contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-4) and Formula (3-5).
6. The liquid crystal composition according to claim 3 , wherein a content of the first component is from 10 to 90% by weight, a content of the second component is from 5 to 85% by weight, and a content of the third component is from 5 to 85% by weight, based on the total weight of the liquid crystal composition.
7. The liquid crystal composition according to claim 3 , wherein a content of the first component is from 40 to 90% by weight, a content of the second component is from 5 to 55% by weight, and a content of the third component is from 5 to 55% by weight, based on the total weight of the liquid crystal composition.
8. A liquid crystal composition containing, as a first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4); containing, as a second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3); containing, as a third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-5); containing, as a fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-1) to Formula (4-5); and having a negative dielectric anisotropy:
wherein R 1 represents an alkyl or an alkenyl; R 2 represents an alkoxy; R 3 represents an alkyl, an alkenyl or an alkoxy, and in these groups, each of the alkyl and the alkoxy has a carbon number of from 1 to 10, and the alkenyl has a carbon number of from 2 to 10.
9. The liquid crystal composition according to claim 8 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4), contains, as the second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-3), and contains, as the fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-1) to Formula (4-5).
10. The liquid crystal composition according to claim 8 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4), contains, as the second component, at least-one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-3), and contains, as the fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-1) and Formula (4-2).
11. The liquid crystal composition according to claim 8 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by each of Formula (1-1) to Formula (1-4), contains, as the second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-3), and contains, as the fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-3) to Formula (4-5).
12. The liquid crystal composition according to claim 8 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by Formula (1-1), contains, as the second component, at least one compound selected from the group consisting of compounds represented by each of Formula (2-1) to Formula (2-3), contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) to Formula (3-3), and contains, as the fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-4) and Formula (4-5).
13. The liquid crystal composition according to claim 8 , wherein the composition contains, as the first component, at least one compound selected from the group consisting of compounds represented by Formula (1-1), contains, as the second component, at least one compound selected from the group consisting of compounds represented by Formula (2-3), contains, as the third component, at least one compound selected from the group consisting of compounds represented by each of Formula (3-1) and Formula (3-2), and contains, as the fourth component, at least one compound selected from the group consisting of compounds represented by each of Formula (4-4) and Formula (4-5).
14. The liquid crystal composition according to claim 8 , wherein a content of the first component is from 10 to 85% by weight, a content of the second component is from 5 to 80% by weight, a content of the third component is from 5 to 80% by weight, and a content of the fourth component is from 5 to 80% by weight, based on the total weight of the liquid crystal composition.
15. The liquid crystal composition according to claim 8 , wherein a content of the first component is from 20 to 65% by weight, a content of the second component is from 10 to 55% by weight, a content of the third component is from 5 to 50% by weight, and a content of the fourth component is from 20 to 65% by weight, based on the total weight of the liquid crystal composition.
16. The liquid crystal composition according to claim 1 , wherein the composition has a dielectric anisotropy in a range of from -6.5 to -2.0.
17. The liquid crystal composition according to claim 3 , wherein the composition has a dielectric anisotropy in a range of from -6.5 to -2.0.
18. The liquid crystal composition according to claim 8 , wherein the composition has a dielectric anisotropy in a range of from -6.5 to -2.0.
19. A liquid crystal display device containing the liquid crystal composition as described in claim 1 .
20. The liquid crystal display device according to claim 19 , wherein the device is an active matrix driving device having a VA mode or an IPS mode.
21. A liquid crystal display device containing the liquid crystal composition as described in claim 3 .
22. The liquid crystal display device according to claim 21 , wherein the device is an active matrix driving device having a VA mode or an IPS mode.
23. A liquid crystal display device containing the liquid crystal composition as described in claim 8 .
24. The liquid crystal display device according to claim 23 , wherein the device is an active matrix driving device having a VA mode or an IPS mode.