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Patent Searching and Data


Title:
OPTICAL FILM, COMPOSITE OPTICAL FILM, AND MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2022116919
Kind Code:
A
Abstract:
To provide an optical film capable of presenting a satisfactory effect as a 3D retardation film and an effect of suppressing degradation of a display device, and is easy to manufacture, and a manufacturing method thereof.SOLUTION: An optical film includes a layer of a resin (a) including a crystalline polymer, in which light transmittance at a wavelength of 380 nm is 5% or less, and a Nz coefficient is greater than 0 and less than 1. A manufacturing method of the optical film including the layer of resin (a) includes: a step (I) of obtaining a film (I) that contains a UV absorber and a step (II) of obtaining a film (II) in which one or both surfaces of the film (I) are brought into contact with a solvent to change a refractive index in a thickness direction of the film (I).SELECTED DRAWING: None

Inventors:
MURATA NAOKI
Application Number:
JP2021013347A
Publication Date:
August 10, 2022
Filing Date:
January 29, 2021
Export Citation:
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Assignee:
NIPPON ZEON CO
International Classes:
G02B5/30; B29D7/01; B32B27/18
Attorney, Agent or Firm:
Sakai International Patent Office



 
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