CIRCULAR POLARIZING PLATE, METHOD FOR PRODUCING THE SAME, OPTICAL FILM, LIQUID CRYSTAL DISPLAY, AND ELECTROLUMINESCENT ELEMENT

摘要

The present invention provides a circular polarizer, comprising at least an optically anisotropic element, a transmissive protection film and a polarizing element sandwiched therebetween, the optically anisotropic element comprising a liquid crystal layer aligned on a cellulose triacetate film and having a retardation of approximately 1/4 wavelength in the visible light region, the liquid crystal layer comprising a liquid crystal film with a fixed twisted nematic alignment. The circular polarizer is suppressed in thickness by simplifying the layer structure without causing defects such as peeling off the layers even under elevated temperature and humidity condition and makes it possible to set arbitrarily the angle of the alignment axis direction of the optically anisotropic element comprising a liquid crystal layer with a fixed twisted alignment with respect to the absorption axis of the polarizing element so that the optically anisotropic element and polarizing element both in the form of an elongate film can be laminated continuously to one another.