To provide a cellulose acylate film in which retardation in the film thickness direction is made to express more highly than before relative to retardation of an in-plane direction.
The cellulose acylate film includes: a cellulose acylate; and a compound which includes a first aromatic ring or heteroaromatic ring and at least three other aromatic rings or heteroaromatic rings other than the first aromatic ring or heteroaromatic ring, in which three of the other aromatic rings or heteroaromatic rings are condensed to the first aromatic ring or heteroaromatic ring, or a compound in which three of the other aromatic rings or heteroaromatic rings combine with the first aromatic ring or heteroaromatic ring through an atomic linking group or a linking group of one linking chain length. The value obtained by multiplying the length of a major axis by the length of an axis which intersects perpendicularly with the major axis is 15-28 nm2.
SHIMAMURA MASARU
FUKAGAWA NOBUTAKA