LIQUID CRYSTAL DEVICES

摘要

A liquid crystal composition suitable for use as a two-frequency material in a two-frequency switching device comprises a mixture of: a first component comprising at least one diester compound having a formula: Formula (I) where R1 is an alkyl or alkoxy group, Z is an cycloalkyl or aryl ring structure and R2 is alkyl, alkoxy or halogen; or CN; and a second component comprising at least one compound having a formula: Formula (II) wherein R3 and R4 is each independently an alkyl or alkoxy group, is a trans-1,4-disubstituted cyclohexane or a benzene ring, Y is a cycloalkyl ring or a benzene ring optionally having a lateral halogen substituent and n is 0 or 1.