| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing an optical film causing no deformation such as black band and blocking irrespective of its large width and thin film and to provide the optical film manufactured by this manufacturing method, a polarizing plate using this optical film, and a liquid crystal display element using this polarizing plate. <P>SOLUTION: This method for manufacturing the optical film having deviation in local film thickness in the direction of width being 0.2-2.5 μm comprises an application process for applying a functional coating on the film being a continuously moving basic material, a knurling process for knurling the film being the basic material to have height of 14-30 μm before or after applying the functional coating, a drying process for drying the film being the basic material on which the functional coating is applied, and a winding process for winding the film being the basic material on which the functional coating is applied. <P>COPYRIGHT: (C)2010,JPO&INPIT |
