| 摘要 |
This invention provides a process for producing a cellulose ester film, which has small birefringence properties, is a thin film and has excellent optical isotropic properties, and a liquid crystal display device which can significantly reduce light leakage in an oblique direction, and can realize a wide visible angle. The production process of a cellulose ester film is characterized by comprising the steps of casting a dope containing a cellulose ester and a retardation reduction additive onto a support, separating the film from the support, stretching the separated film by a tenter, drying the film after stretching, and winding the dried film, the film being produced under such production conditions that, in a stage from the separation of the film from the support to winding of the film, a requirement of-20% <= MD + TD <= 0% is satisfied wherein MD represents the stretching of the film in the transfer direction, %, and TD represents the stretching of the film in the widthwise direction, %. |
