| 摘要 |
<P>PROBLEM TO BE SOLVED: To manufacture a multilayer film wherein adhesive strength is enhanced in an interface and generation of rainbow unevenness is suppressed. <P>SOLUTION: A first adhesion layer 12 and a second adhesion layer 13 are formed on a base material 11 formed of polyester biaxially stretched in this order from the side of the base material 11. Additionally, a hard coat layer 14 and an antireflection layer 15 are formed on the second adhesion layer 13 to form the multilayer film 10. When refractive indices of the base material 11, the first adhesion layer 12, the second adhesion layer 13, and the hard coat layer 14 are η1, η2, η3, and η4, respectively, the refractive indices are adjusted so as to satisfy the following formulae (1) to (3) to prevent rainbow unevenness. (1) η1<η4, (2) η2<η3, (3) (η1/η4)<SP>1/2</SP>×0.95≤η2/η3≤(η1/η4)<SP>1/2</SP>×1.05. The two adhesion layers 12 and 13 can enhance the adhesive strength. <P>COPYRIGHT: (C)2008,JPO&INPIT |
