Fast Response Bimesogenic Compound with Adjusted Dielectric Anisotropy of Both Side Mesogenic Groups

摘要

PURPOSE: A bimesogenic compound is provided to increase rotation rate of liquid crystal molecules because marks of dielectric anisotropy of both mesogenic groups are different each other, thereby capable of improving response rate of liquid crystal together with widening viewing angle. CONSTITUTION: A bimesogenic compound is in chemical formula 1. In chemical formula 1, X1, X2, Y1, Y2, Z1, and Z2 is respectively a benzene ring unsubstituted, or 1- or 4- substitutable by F, Cl, CN, or C1-7 alkyl, alkoxy, alkylcarbonyl, or alkoxycarbonyl in which one or more H are substitutable by one or more F or Cl. Sp is a spacer group comprising C2-12. In here, one or more CH_2 groups not adhering each other can be substituted to -O-, -OCF_2-, -CF_2O-, -CF_2-CF_2-, -CH_2-CF_2-, 1,2-dimethylbenzene, 1,3-dimethylbenzene, or 1,4-dimethylbenzene.