METHOD OF PRODUCING OPTICAL FILM, OPTICAL FILM, POLARIZER PLATE, TRANSFER MATERIAL, LIQUID CRYSTAL DISPLAY DEVICE, AND POLARIZED ULTRAVIOLET EXPOSURE APPARATUS

摘要

A novel method of producing an optical film is disclosed. The method comprises steps (1) to (3) in this order: (1) preparing, on a surface of an alignment film, a layer of a polymerizable composition comprising a polymerizable liquid crystal compound and a dichroic polymerization initiator; (2) aligning molecules of said polymerizable liquid crystal compound in said layer in a first alignment state; and (3) irradiating said layer with polarized ultraviolet light to carry out polymerization of said polymerizable liquid crystal compound and fix molecules of said polymerizable liquid crystal compound in a second alignment state thereby to form an optically anisotropic layer, wherein a percentage of polarized ultraviolet light having an extinction ratio ranging from 1 to 8 is not greater than 15% with respect to an energy density of polarized ultraviolet light per unit area (J/cm²).