Method for manufacturing micro-wrinkle-structured cholesteric liquid crystal film, micro-wrinkle-structured cholesteric liquid crystal film manufactured thereby, and photonic crystal reflective film including same

Abstract

In a method for manufacturing a cholesteric liquid crystal film, an elastic polymer substrate is prepared by impregnating, on one or both sides of a first polymer film, a second polymer having a modulus different from that of the first polymer, a micro-wrinkle-structured substrate is prepared by stretching the elastic polymer substrate in one direction and removing the stretching force, and a micro-wrinkle-structured cholesteric liquid crystal film is prepared by transferring a cholesteric liquid crystal monomer mixture onto one side of the micro-wrinkle-structured substrate. The cholesteric liquid crystal film manufactured is induced to have a micro-wrinkled structure and, thus, has the advantage of appearing as the same color even when observed at various angles.

Dependencies are inferred from the claim text.