| 摘要 |
PROBLEM TO BE SOLVED: To provide a polarizing film having excellent polarizing performance in the range of the visible ray spectrum and excellent durability when left in high temperature and high humidity surroundings for a long period of time. SOLUTION: The polarizing film comprises a polyvinyl alcohol derivative having a polyvinylene structure obtained from polyvinyl alcohol having≥2,000 polymerization degree as a material, and shows≥20 dichroic ratio. COPYRIGHT: (C)2005,JPO&NCIPI |
