| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a selective reflection film, by which a uniform hue with high color purity (in particular a green or a red hue) is obtained and color separation (patterning) is carried out with high accuracy without being affected by irradiation unevenness or the like in patterning. SOLUTION: The method for manufacturing the selective reflection film is characterized by making a liquid crystal composition containing a liquid crystal compound, a photo-reactive chiral compound with an isomerizing absorption band in a visible ray region and a polymerization initiator be irradiated with either circularly or elliptically polarized light with the direction identical to the helical twist direction of the liquid crystal so as to realize a picture and forming a pattern exhibiting the selective reflection corresponding to the irradiation. In a preferable manner, the photo-reactive chiral compound has the isomerizing absorption band in 490-570 nm or 630-690 nm and further the wavelength of the circularly or elliptically polarized light is 490-570 nm or 630-690 nm. |
