| abstract |
A retardation film excellent in various properties such as optical properties, heat resistance, mechanical properties, and reliability, and a circularly polarizing plate and an image display device obtained by using the retardation film are provided. In the group consisting of a carbonate bond and an ester bond, at least one linking group, a structural unit represented by the following general formula (1), and a structural unit represented by the following general formula (2) A retardation film comprising a resin having one or more structural units and having positive refractive index anisotropy. [Selection] Figure 1 |