| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical film capable of suppressing the deterioration of front contrast in a liquid crystal display device, to provide a method of manufacturing the optical film by a thermofusion film forming method by which the optical film can be improved in color irregularity by suppressing thermal degradation, and to provide a filtration device used for the method of manufacturing the optical film. <P>SOLUTION: The optical film is characterized in that the concentration of particulate materials is the lowest in the center part and the concentration is continuously changed toward the surface part. <P>COPYRIGHT: (C)2010,JPO&INPIT |
