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US 2015/0028256 A1Published application
Liquid crystal composition, liquid crystal display element, and liquid crystal display
AssigneeDIC Corporation
InventorsJoji Kawamura, Yoshinori Iwashita, Shinji Ogawa
Life of this patent
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Abstract
A liquid crystal composition having a negative dielectric anisotropy, a component (B) including at least one compound represented by formula (1.1) or formula (1.2), wherein the compound (B) is dielectrically neutral, having a dielectric anisotropy of more than −2 and less than +2; and a component (A) including at least one compound represented by formula (2.1) or formula (2.2), wherein the component (A) is dielectrically negative, having a dielectric anisotropy of −2 or less.
Claims12
1-11. (canceled)
A liquid crystal composition having a negative dielectric anisotropy, comprising:
- a component (B) including 2 to 25% of a compound represented by formula (1.1), wherein the compound (B) is dielectrically neutral, having a dielectric anisotropy of more than −2 and less than +2;
- and
- a component (A) including a compound represented by formula (2.1);
- 1 to 20% of a compound represented by formula (2.2);
- and 8 to 24% of a compound represented by formula (5) or formula (6):
- wherein in the formula (5) and the formula (6), R2 represents an alkyl group having a carbon number of 3 to 5, wherein the component (A) is dielectrically negative, having a dielectric anisotropy of −2 or less,
- the liquid crystal composition further comprising a total content of 90% or more of compounds represented by formula (1.1), formula (2.1), formula (2.2), formula (5), formula (6), formula (1.2), formula (3.1), formula (3.2), formula (4), formula (7), formula (8), formula (9), formula (a1), formula (a2) and formula (b1):
- where R1 represents an alkyl group having a carbon number of 2 to 5 or an alkoxy group having a carbon number of 3 to 5,
- where R3 represents an alkyl group having a carbon number of 3 or 4,
- where R4 represents an alkyl group having a carbon number of 2 or 3;
- R5 represents an alkyl group having a carbon number of 1 or 2, or an alkoxy group having a carbon number of 1 or 2,
- where R6 represents an alkyl group having a carbon number of 3 or 5;
- R7 represents an alkyl group having a carbon number of 1 to 3, or an alkoxy group having a carbon number of 1 to 3,
10 more elements
Dependencies are inferred from the claim text.