OPTICAL FILM, POLARIZING PLATE AND IMAGE DISPLAY DEVICE

WIPO Patent Application WO/2023/214502

A1

The present invention addresses the problem of providing: an optical film which enables easy separation of a base material when the base material is separated therefrom, while ensuring sufficient adhesion between the base material and an alignment film during works other than the separation of the base material; a polarizing plate; and an image display device. The present invention provides an optical film which sequentially comprises a base material, an alignment film and a liquid crystal layer in this order, wherein: the alignment film contains at least one specific compound that is selected from the group consisting of a polymerizable polymer that has a polymerizable group in a side chain and a polymerized product of the polymerizable polymer; and if the secondary ion intensity associated with the specific compound in the alignment film is determined by time-of-flight secondary ion mass spectrometry, while irradiating the alignment film with an ion beam from the liquid crystal layer-side surface toward the base material-side surface, the maximum value of the secondary ion intensity associated with the specific compound is present in a region from the base material-side surface to the thickness position of 100 nm.

NISHIMURA NAOYA (JP)
MAEDA YOSHINORI (JP)
KATO YUMI (JP)
SUMI TOSHIKAZU (JP)
KOITO NAOKI (JP)
KUWAYAMA YASUKAZU (JP)

PCT/JP2023/015101

November 09, 2023

April 14, 2023

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FUJIFILM CORP (JP)

G02B5/30; C08F2/50; C09B67/20; G02F1/1335; G02F1/13363; G02F1/1337; G09F9/00; G09F9/30

WO2020116174A1	2020-06-11
WO2021246148A1	2021-12-09
WO2020179873A1	2020-09-10
WO2021182248A1	2021-09-16
WO2020260617A1	2020-12-30

ITOH Hideaki et al. (JP)

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