| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a brightness enhanced film having good stability in which it shows little reduction of brightness enhancing effect and less warpage under using environment, and to provide a display device equipped with the brightness enhanced film. <P>SOLUTION: A brightness enhanced film has at least a cholesteric liquid crystal layer; an acrylic film (A) containing an acrylic polymer having a ring structure in the main chain on one side of the liquid crystal layer; and a λ/4 wavelength plate (B) on the other side of the liquid crystal layer. In the acrylic film (A), an in-plane retardation (Re) is 10 nm or less and a thickness direction retardation (Rth) is -10 nm or more and 10 nm or less. <P>COPYRIGHT: (C)2012,JPO&INPIT |
