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US 10,655,065 B2Granted
Liquid crystal composition and liquid crystal display device
AssigneesJnc Corporation, Jnc Petrochemical Corporation
InventorsMaiko Matsukuma, Masayuki Saito
Life of this patent
Estimating the term…
Abstract
A liquid crystal compound comprising a specific compound having a positive dielectric anisotropy as the first component, and a specific compound having a low viscosity as a second component. Further, the liquid crystal compound may contain a specific compound having a positive dielectric anisotropy as the third component, a specific compound having a maximum temperature or a low viscosity as the fourth component, or a specific compound having a negative dielectric anisotropy as the fifth component.
Claims18
A liquid crystal composition comprising:
- at least one compound selected from compounds represented by formula (1) as a first component;
- and
- at least one compound selected from compounds represented by formula (2) as a second component, and the liquid crystal composition has a nematic phase,
- wherein R1 is an alkyl having a carbon number from 1 to 12 or an alkenyl having a carbon number from 2 to 12, and in these groups at least one —CH2— may be substituted by —O—;
- R2 and R3 are each an alkyl having a carbon number from 1 to 12, an alkoxy having a carbon number from 1 to 12, an alkenyl having a carbon number from 2 to 12, an alkyl having a carbon number from 1 to 12 in which at least one hydrogen is substituted by fluorine or chlorine, or an alkenyl having a carbon number from 2 to 12 in which at least one hydrogen is substituted by fluorine or chlorine;
- ring A is tetrahydropyran-2,5-diyl or 1,3-dioxane-2,5-diyl;
- ring B is an independent 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl or tetrahydropyran-2,5-diyl;
- Z1 and Z2 are each a single bond, ethylene, methyleneoxy, carbonyloxy, or difluoromethyleneoxy, wherein at least one of Z1 and Z2 is difluoromethyleneoxy;
- X1 and X2 are each either hydrogen or fluorine;
- Y1 is fluorine, chlorine, an alkyl having a carbon number from 1 to 12 in which at least one hydrogen may be substituted by fluorine or chlorine, or an alkoxy having a carbon number from 1 to 12 in which at least one hydrogen may be substituted by fluorine or chlorine;
- a has a value of 0, 1, 2, or 3;
- n has a value of 0, 1, 2, or 3.
9 more elements
A liquid crystal composition comprising:
- at least one compound selected from compounds represented by formula (1′) as a first component;
- and
- at least one compound selected from compounds represented by formula (2) as a second component, and the liquid crystal composition has a nematic phase,
- wherein R1 is an alkyl having a carbon number from 1 to 12 or an alkenyl having a carbon number from 2 to 12, in these groups at least one —CH2— may be substituted by —O—;
- R2 and R3 are each an alkyl having a carbon number from 1 to 12, an alkoxy having a carbon number from 1 to 12, an alkenyl having a carbon number from 2 to 12, an alkyl having a carbon number from 1 to 12 in which at least one hydrogen is substituted by fluorine or chlorine, or an alkenyl having a carbon number from 2 to 12 in which at least one hydrogen is substituted by fluorine or chlorine;
- ring A is 1,4-cyclohexylene or 1,4-cyclohexenylene;
- ring B is 1,4-cyclohexylene, 1,4-cyclohexenylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2,6-difluoro-1,4-phenylene, pyrimidine-2,5-diyl, 1,3-dioxane-2,5-diyl, or tetrahydropyran-2,5-diyl;
- Z1 and Z2 are each a single bond, ethylene, methyleneoxy, or carbonyloxy;
- X1 and X2 are each either hydrogen or fluorine;
- Y1 is fluorine, chlorine, an alkyl having a carbon number from 1 to 12 in which at least one hydrogen is substituted by fluorine or chlorine, an alkoxy having a carbon number from 1 to 12 in which at least one hydrogen is substituted by fluorine or chlorine, or an alkenyloxy having a carbon number from 2 to 12 in which at least one hydrogen is substituted by fluorine or chlorine;
- a has a value of 0, 1, 2 or 3;
- n has a value of 1, 2, or 3.
9 more elements
Dependencies are inferred from the claim text.