| 摘要 |
Disclosed is a liquid crystal display element which is composed of a pair of substrates (1) at least one of which is transparent. The liquid crystal display element comprises, between the pair of substrates, a transparent electrode (2), an aligning agent (3) that contains at least reactive monomers and/or oligomers (5), and a liquid crystal layer. The liquid crystal display element is characterized in that an alignment layer is obtained by polymerizing the reactive monomers or oligomers contained in the aligning agent, and the liquid crystal layer is composed of a liquid crystal composition that contains a compound (4) having at least one benzene ring in each molecule, said benzene ring containing at least one fluorine atom and being disubstituted by halogen atoms. |
| 主权项 |
1. A liquid crystal display element, comprising a pair of substrates including at least one transparent substrate, wherein the liquid crystal display element includes a transparent electrode interposed between the pair of substrates, an aligning agent containing at least a reactive monomer or oligomer, and a liquid crystal layer, the reactive monomer or oligomer contained in the aligning agent is polymerized to form an alignment layer, and the liquid crystal layer comprises a liquid crystal composition including at least one compound selected from the group of liquid crystal compounds having negative dielectric anisotropy, wherein the liquid crystal composition contains at least one liquid crystal compound selected from the group of liquid crystal compounds represented by formula (1) as a first component;wherein R1 and R2 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons or alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine, and at least one of R1 and R2 is alkenyl; ring A and ring B are independently 1,4-cyclohexylene, tetrahydropyran-2,5-diyl, 1,3-dioxane-2,5-diyl, 1,4-phenylene, 2-fluoro-1,4-phenylene, 2,5-difluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene, 2-fluoro-3-chloro-1,4-phenylene, 2,3-difluoro-6-methyl-1,4-phenylene, 2,6-naphthalenediyl or 7,8-difluorochroman-2,6-diyl, and at least one of ring A and ring B is 2,3-difluoro-1,4-phenylene, 2-fluoro-3-chloro-1,4-phenylene, 2,3-difluoro-6-methyl-1,4-phenylene, or 7,8-difluorochroman-2,6-diyl; Z1 is independently a single bond, —(CH2)2—, —CH2O—, —COO— or —CF2O—; and j is 1, 2 or 3.
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