METHOD FOR MANUFACTURING AN OPTICAL FILTER FOR A STEREOSCOPIC IMAGE DISPLAY DEVICE

摘要

The present invention relates to a method for manufacturing an optical filter for a stereoscopic image display device, which involves forming an alignment film having different alignment directions in micro areas through a single continuous photo alignment process. The method comprises the steps of: forming a polymer film on a substrate; placing, on the polymer film, a pattern mask in which a light-transmitting area and a light-shielding area are staggered and alternately formed in the vertical and horizontal directions to enable different types of polarized light to selectively pass, placing, on the pattern mask, a polarizing plate having two areas for enabling two different types of polarized light to pass therethrough, and irradiating ultraviolet rays onto the polymer film from above the polarizing plate to form alignment film having different alignment directions in micro areas of the polymer film; and forming a phase delay layer on the alignment film. The method according to the present invention provides different orientations in micro areas of the polymer film using one pattern mask sheet and through a single continuous light irradiation process, thereby simplifying the process of forming the alignment film having different light alignment directions in micro areas of the polymer film. Thus, the yield rate and productivity in manufacturing the optical filter for the stereoscopic image display device can be improved.