申请人:CHISSO CORPORATION
公开号:EP0801125A1
公开(公告)日:1997-10-15
A liquid crystal composition is realized, which composition simultaneously exhibits a negatively large Δε value suitable to τ-Vmin, and SA phase within a sufficient temperature range for realizing a good alignment.
A smectic liquid crystal composition containing component (AI), component (B) and/or component (C), expressed by the following formulas:
wherein R1 represents an alkyl group of 1 to 9 carbon atoms, R2 represents an alkyl group of 1 to 9 carbon atoms, R3 represents an alkyl group of 1 to 18 carbon atoms, R4 represents an alkyl group of 1 to 18 carbon atoms, X represents H or F, R5 represents an alkyl group of 6 to 15 carbon atoms and R6 represents an alkyl group of 6 to 15 carbon atoms.
Ferroelectric liquid crystal material having a negative dielectric anisotropy is applicable to display element utilizing AC-stabilizing effect and τ-Vmin. Further, as to the composition containing
as an additional component, SA phase appears within a broad range; hence the composition can be made up into a ferroelectric liquid crystal composition having a good alignment.
实现了一种液晶组合物,该组合物同时表现出与 τ-Vmin 相适应的负大 Δε 值,以及在足够的温度范围内的 SA 相,以实现良好的排列。
一种包含组分(AI)、组分(B)和/或组分(C)的胶凝液晶组合物,由以下公式表示:
其中 R1 代表 1 至 9 个碳原子的烷基,R2 代表 1 至 9 个碳原子的烷基,R3 代表 1 至 18 个碳原子的烷基,R4 代表 1 至 18 个碳原子的烷基,X 代表 H 或 F,R5 代表 6 至 15 个碳原子的烷基,R6 代表 6 至 15 个碳原子的烷基。
具有负介电各向异性的铁电液晶材料适用于利用交流稳定效应和 τ-Vmin 的显示元件。此外,对于含有
作为附加成分,SA 相出现的范围很广,因此该组合物可制成具有良好排列性的铁电液晶组合物。