POLYENE BASED POLARIZING FILM MANUFACTURING METHOD, POLYENE BASED POLARIZING FILM, LAMINATED POLARIZING FILM, AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide, e.g., a new and improved polarizing film manufacturing method which enables stable manufacture of a polarizing film with preferable optical characteristics.SOLUTION: An aspect of the present invention provides a polyene based polarizing film manufacturing method comprising: producing a polyvinyl alcohol film using a coating liquid containing a polyvinyl alcohol and an acid catalyst; and subjecting the polyvinyl alcohol film to dehydration reaction. According to this aspect, high concentrations of the acid catalyst can be uniformly dispersed in the polyvinyl alcohol film.