Liquid crystal composition and liquid crystal display element
View Patent ↗The liquid crystal composition includes at least one compound selected from a group of compounds represented by formula (1) as a first component, has a positive dielectric anisotropy, and has a nematic phase, and a liquid crystal display element containing the composition: wherein R 11 and R 12 are alkyls having different carbon numbers.
1. A liquid crystal composition comprising at least one compound selected from a group of compounds represented by formula (1) as a first component, at least one compound selected from a group of compounds represented by formulae (2-1), (3-1) to (3-6) and (4-1) as a second component, and at least one compound selected from a group of compounds represented by formulae (5-1), (5-2), (6-1), (6-2) and (7-1) as a third component, having a positive dielectric anisotropy, and having a nematic phase:
wherein R 1 and R 2 are independently alkyl; R 7 is alkenyl; and R 11 and R 12 are alkyls having different carbon numbers; and
wherein the third component at least includes a compound selected from the group of compounds represented by formula (7-1).
2. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in a range of approximately 3% by weight or more and less than approximately 10% by weight, a ratio of the second component is in a range of from approximately 10% to approximately 85% by weight, and a ratio of third component is in a range of from approximately 10% to approximately 80% by weight.
3. The liquid crystal composition according to claim 1 , wherein a ratio of the first component is in a range of from approximately 10% to approximately 50% by weight, a ratio of the second component is in a range of from approximately 10% to approximately 85% by weight, and a ratio of third component is in a range of from approximately 10% to approximately 80% by weight.
4. The liquid crystal composition according to claim 1 , wherein the composition has an optical anisotropy ranging from approximately 0.10 to approximately 0.15.
5. The liquid crystal composition according to claim 2 , wherein the composition has an optical anisotropy ranging from approximately 0.10 to approximately 0.15.
6. The liquid crystal composition according to claim 3 , wherein the composition has an optical anisotropy ranging from approximately 0.10 to approximately 0.15.
7. The liquid crystal composition according to claim 1 , wherein the composition further comprises an antioxidant.
8. The liquid crystal composition according to claim 7 , wherein the antioxidant is a compound represented by formula (10):
wherein n is an integer of 1 to 9.
9. A liquid crystal display element comprising the liquid crystal composition according to one of claim 1 .
10. A liquid crystal display element comprising the liquid crystal composition according to one of claim 7 .