申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP0799878A1
公开(公告)日:1997-10-08
This invention provides liquid crystal compositions which can improve the low Δn (refractive index anisotropy) of conventional liquid crystal compositions containing a silacyclohexane compound and which retain a low viscosity and hence show no decrease in response speed.
Liquid crystal compositions having a high Δn of 0.13 to 0.25, a low viscosity of 30 cp or less, a low threshold voltage and a high voltage holding ratio can be obtained by adding thereto, as a required component, a compound having both a silacyclohexane ring and a tolan structure, or a miture of a compound having a silacyclohexane ring and a compoud having a tolan structure.
本发明提供的液晶组合物可改善含有硅环己烷化合物的传统液晶组合物的低 Δn(折射率各向异性)问题,并可保持低粘度,从而不会降低响应速度。
在液晶组合物中加入硅环己烷环和妥仑结构的化合物,或加入硅环己烷环化合物和妥仑结构化合物的混合物,作为必要组分,可获得具有 0.13 至 0.25 的高Δn、30 cp 或更低粘度、低阈值电压和高电压保持率的液晶组合物。