摘要:
Provided are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat or light, a high clearing point (or high maximum temperature) , low minimum temperature of a liquid crystal phase, small viscosity, large optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and good compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1):
wherein, R 1 and R 2 are alkyl having 1 to 15 carbons; A 1 , A 2 , A 3 and A 4 are 1, 4-cyclohexylene and 1, 4-phenylene; Z 1 , Z 2 , Z 3 and Z 4 are a single bond; Y 1 , Y 2 and Y 3 are fluorine; and a, b, c and d are 0 or 1, and a sum of a, b, c and d is an integer from 0 to 3, or the like.
摘要:
Provided is a polar compound that has high chemical stability and high capability of aligning liquid crystal molecules, and has a large voltage holding ratio when used in a liquid crystal display device. The compound represented by formula (1) is applied.
For example, R 1 is alkyl having 1 to 15 carbons; rings A 1 to A 5 are 1,4-cyclohexylene or 1,4-phenylene; Z 1 and Z 5 are a single bond or alkylene having 1 to 10 carbons; a and b are 0 to 4, and a sum of a and b is 4 or less; d is 1 to 4; c and e are 0 to 4; P 1 to P 3 are a polymerizable group represented by formulas (P-1) to (P-5):
in which M 1 to M 3 are hydrogen or alkyl having 1 to 5 carbons; and R 2 is a group represented by formulas (1a) to (1c):
in which Sp 1 to Sp 5 are a single bond or alkylene having 1 to 10 carbons; S 1 is >CH-; S 2 is >C 1 is -OH.
摘要:
Provided is a liquid crystal compound satisfying at least one of physical properties such as high stability to heat, light and so forth, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and excellent compatibility with other liquid crystal compounds. The compound is represented by formula (1).
In the formula, for example, R 1 and R 2 are alkyl having 1 to 15 carbons, and ring A 1 , ring A 2 and ring A 3 are 1,4-cyclohexylene or 1,4-cyclohexenylene, Z 1 , Z 2 and Z 3 are a single bond or - (CH 2 ) 2 -, a, b and c are 0 or 1, and a sum of a, b, and c is 0, 1 or 2.
摘要:
To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1):
wherein, for example, R 1 is alkyl having 1 to 15 carbons, ring A 1 to ring A 4 are 1,4-cyclohexylene or 1,4-phenylene, at least one of Z 1 to Z 4 is -CF 2 O-, the remainder and W 1 are a single bond, - (CH 2 ) 2 -, -COO- or -CH 2 O-, X 1 is halogen, -C=N, -CF 3 or -OCF 3 , L 1 and L 2 are hydrogen or fluorine, Y 1 and Y 2 are fluorine; and a, b, c and d are 0 or 1, and a sum thereof is 1 or 2.
摘要:
To provide a liquid crystal compound satisfying at least one of physical properties such as high stability to light, a high clearing point, a low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, a large dielectric constant in a minor axis direction, a suitable elastic constant and excellent compatibility; a liquid crystal composition containing the compound; and a liquid crystal display device including the composition. The compound is represented by formula (1).
For example, R 1 is alkyl having 1 to 15 carbons, ring A 1 to ring A 4 are 1, 4-cyclohexylene or 1, 4-phenylene, Z 1 to Z 4 are a single bond, - (CH 2 ) 2 -, -COO- or -CH 2 O-, X 1 is halogen, -C=N, -CF 3 or -OCF 3 , L 1 and L 2 are hydrogen or fluorine, Y 1 and Y 2 are fluorine; a, b, c and d each are 0 or 1, and a sum thereof is 1 or 2.
摘要:
Provided is a polar compound that has high chemical stability and high capability of aligning liquid crystal molecules, and has a large voltage holding ratio when used in a liquid crystal display device. The compound represented by formula (1) is applied.
For example, R 1 is alkyl having 1 to 15 carbons; rings A 1 to A 5 are 1,4-cyclohexylene or 1,4-phenylene; Z 1 and Z 5 are a single bond or alkylene having 1 to 10 carbons; a and b are 0 to 4, and a sum of a and b is 4 or less; d is 1 to 4; c and e are 0 to 4; P 1 to P 3 are a polymerizable group represented by formulas (P-1) to (P-5) :
in which M 1 to M 3 are hydrogen or alkyl having 1 to 5 carbons; and R 2 is a group represented by formulas (1a) to (1c):
in which Sp 1 to Sp 5 are a single bond or alkylene having 1 to 10 carbons; S 1 is >CH-; S 2 is >C 1 is -OH.