Depolarizing film, depolarizing member, and method for producing depolarizing film

A depolarizing member including two depolarizing films and a λ/4 plate, the depolarizing films being disposed such that respective depolarizing layers thereof face each other, with the λ/4 plate interposed therebetween, wherein:

• each depolarizing film includes a depolarizing layer comprising a first region and a second region having differing optical characteristics,
• in each depolarizing layer, a ratio between an area of the first region and an area of the second region is 0.45:0.55 to 0.55:0.45,
• the first region is an optically anisotropic region causing 90° optical rotation of light that is incident on one surface of the depolarizing layer and is emitted from another surface, and
• the second region is an optically isotropic region having optical isotropy.