Liquid crystal medium, useful in liquid crystal displays, is based on a mixture of polar compounds having a positive dielectric anisotropy and contains at least one difluorinated aryl compound and at least one fluorinated aryl compound

摘要

A liquid crystal medium is based on a mixture of polar compounds having a positive dielectric anisotropy and contains at least one difluorinated aryl compound and at least one fluorinated aryl compound. A liquid crystal medium (I) is based on a mixture of polar compounds having a positive dielectric anisotropy and contains at least one difluorinated aryl compound of formula (1) and at least one fluorinated aryl compound of formula (2) and/or (3). [Image] R11, R121-12C alkyl or alkoxy or 2-12 C alkenyl; R : 1-12C alkyl optionally having CH2 groups replaced by -O-, -S-, -CHCH-, -CC-, -CO-, -OCO- or -COO- such that heteroatoms (-O-, -S-) are not directly bonded to each other; X0F, Cl, or 1-7C fluoroalkyl or fluoroalkoxy An independent claim is included for an electrooptical liquid crystal display or projection system containing a liquid crystal medium (I).