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US 2017/0362400 A1Published application
Optical film, method of manufacturing the optical film, polarizing plate using the optical film, and image display device
AssigneeFUJIFILM Corporation
InventorsFumitake MITOBE, Shinya WATANABE, Katsumi SASATA, Hajime NAKAYAMA
Life of this patent
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Abstract
There is provided an optical film including: a layer A containing a cyclic olefin-based resin; and a layer B containing a cyclic olefin-based resin, and having a thickness thinner than a thickness of the layer A, wherein a glass transition temperature Tg[B] of the layer B is lower than a glass transition temperature Tg[A] of the layer A.
Claims8
-8. (canceled)
An optical film comprising a cyclic olefin-based resin,
- wherein a glass transition temperature of the optical film is 150° C. or more,
- a retardation in a thickness-direction of the optical film at a wavelength of 590 nm is 80 nm or more, and
- a plane orientation coefficient of at least one surface of the optical film is 1.0×10−3 or less, and a surface hydroxyl group content of the surface is 1.5% or more.
(canceled)
(canceled)
Dependencies are inferred from the claim text.