1-(trifluoromethyl)naphthalene derivative
AssigneeDIC Corporation
InventorsYutaka Nagashima, Tetsuo Kusumoto
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Abstract
Since a 1-(trifluoromethyl)naphthalene derivative of the present invention has negative dielectric anisotropy, has a very large absolute value, is chemically stable with heat, light, water, and the like, moreover, it excels in compatibility with a liquid crystal compound or a liquid crystal composition used widely nowadays, it is suitable as an element of a practical liquid crystal composition capable of low voltage drive. In addition, the liquid crystal composition using the compound of the present invention has low drive voltage, is useful as a constituent material of the liquid crystal display device of low consumption of electrical power, and can be used suitably for liquid crystal display devices such as a VA type and an IPS type, and the like.
Claims20
A 1-(trifluoromethyl)naphthalene derivative represented by the general formula (I)
- (wherein, in the formula, each R1 and R2 represents independently an alkyl group having 1 to 12 carbon numbers, an alkenyl group having 2 to 12 carbon numbers, an alkoxyl group having 1 to 12 carbon numbers, or an alkenyloxy group having 2 to 12 carbon numbers;
- each one or more hydrogen atoms may be independently replaced with a fluorine atom;
- and each —CH2— group may be independently replaced with —O—, —S—, —CO—, —COO—, —OCO—, or —OCOO—;
- each A1, A2, B1, and B2 represents independently a trans-1,4-cyclohexylene group, a trans-1,3-dioxane-2,5-diyl group, a pyridine-2,5-diyl group, a pyrimidine 2,5-diyl group, or a 1-4-phenylene group which may be replaced with one or more fluorine atoms;
- each L1, L2, M1, and M2 represents independently a single bond, —CH2CH2—, —CH═CH—, —CH≡CH—, —OCH2—, —CH2O—, —OCF2—, —CF2O—, —CF2CF2—, —CF═CF—, —OCO—, —COO—, —CH(CH3)CH2—, —CH2CH(CH3)—, —CH(CH3)CH(CH3)—, —OCH(CH3)—, —CH(CH3)O—, —(CH2)4—, —(CH2)3O—, —O(CH2)3—, —COS—, or —SCO—;
- each X1 and X2 represents independently a hydrogen atom or a fluorine atom;
- and
- each p, q, r, and s represents independently 0 or 1).
Dependencies are inferred from the claim text.