Preparation method of chiral nematic liquid crystal composition and liquid crystal display

摘要

The present invention is based on a chiral nematic liquid crystal composition which shows cholesteric liquid crystal phase and be able to reflect light in visible region selectively, comprising:a nematic liquid crystal material;a first chiral material with shift direction of selective reflection wavelength toward long wavelength direction depending on temperature;and a second chiral material with shift direction of selective reflection wavelength toward short wavelength direction depending on temperature;wherein at least one chiral material between the first chiral material and the second chiral material comprises two or more chiral compounds, and relates to a preparation method of the above chiral nematic liquid crystal composition and a (layered-type) liquid crystal display using the same.