MANUFACTURING METHOD OF OPTICAL ALIGNMENT FILM, OPTICAL ALIGNMENT FILM, MANUFACTURING METHOD OF LIQUID CRYSTAL ALIGNMENT FILM, LIQUID CRYSTAL ALIGNMENT, OPTICAL FILM AND IMAGE DISPLAY APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical alignment film showing an excellent alignment property to a liquid crystal compound on a triacetyl cellulose base material without providing a surface treating layer.

SOLUTION: The manufacturing method of the optical alignment film comprises a step (1) for forming a coating layer on the triacetyl cellulose base material by a coating solution which is prepared by dissolving a photoreactive polymer in a good solvent so as to have 0.5 to 40 weight% solid content and further adding toluene thereto so that a weight ratio of the good solvent: toluene is 1:1.3 to 1:12 (1) and a step (2) for carrying out optical alignment by irradiating the coating layer with polarizing ultraviolet ray.

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