| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refringent optical film attaining proper contrast, wide-field angle and coloring prevention of a liquid crystal display device. <P>SOLUTION: The refringent optical film has one or more birefringent A layers, having ny<SB>a</SB>≥nz<SB>a</SB>>nx<SB>a</SB>or nz<SB>a</SB>>ny<SB>a</SB>>nz<SB>a</SB>, and one or more refringent B layers having the characteristic of nx<SB>b</SB>≥ny<SB>b</SB>>nz<SB>b</SB>. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
