| 摘要 |
To provide a retardation film (optical compensation sheet) using a liquid crystal compound excellent in both the wavelength dispersion property and the refractive index anisotropy, disclosed is a retardation film having an optically anisotropic layer formed of a compound represented by formula (I): Ä(R<1>)a-M-(L<1>)Üb-(L<2>), wherein R<1> represents an alkyl group, at least one -CH2- group in the alkyl group may be substituted by -O-, -S-, -C(=O)-, -N(R<2>)-, -CH=CH- or -C IDENTICAL C-, R<2> represents a hydrogen atom or an alkyl group, M represents a group comprising three or more aromatic rings, L<1> represents a single bond or a divalent alkylene group, the -CH2- group in the alkylene group may be substituted by -O-, -S-, -C(=O)- or -N(R<2>)-, L<2> represents a b-valent cyclic, alkene or alkyne group, a represents the number of R<1>s substituted to M, and b represents an integer of 2 to 6. |
