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US 2022/0282028 A1Published application
Phase contrast film and production method therefor
AssigneeZeon Corporation
InventorKyosuke INOUE
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Abstract
A phase difference film formed of a resin containing a polymer having crystallizability, wherein: a coefficient of variation CV(Re) of an in-plane retardation of the phase difference film at a measurement wavelength of 590 nm is 1.0% or less.
Claims7
A phase difference film formed of a resin containing a polymer having crystallizability, wherein:
- a coefficient of variation CV(Re) of an in-plane retardation of the phase difference film at a measurement wavelength of 590 nm is 1.0% or less.
A method for producing a phase difference film, comprising:
- a first step of preparing a stretched film formed of a resin containing a polymer having crystallizability;
- and
- a second step of bringing the stretched film into contact with an organic solvent, wherein
- tension is applied to the stretched film in the second step.
1 more element
Dependencies are inferred from the claim text.