Fujifilm Corporation

Soichiro Watanabe

Yutaka Nozoe

Takashi Iizumi

Hideyuki Nishikawa

Akio Tamura

Kunihiro Atsumi

Ayako Matsumoto

Kazushige Nakagawa

Keisuke Yoshimasa

Tomoaki Yokota

A photo-alignment polymer has a repeating unit represented by Formula (1), in Formula (1), Rrepresents a hydrogen atom or a substituent, X represents &#x2014;O&#x2014;, &#x2014;S&#x2014;, or &#x2014;NR&#x2014;, in which Rrepresents a hydrogen atom or a substituent, Lrepresents a single bond or a divalent linking group, P represents a photo-aligned group, and A represents an acid-cleavage group which is decomposed by an action of acid to produce a polar group

Photo-alignment polymer, binder composition, binder layer, optical laminate, optical laminate manufacturing method, and image display device

An object of the invention is to provide a photo-alignment copolymer capable of improving upper layer coatability after layer formation, a binder composition, a binder layer, an optical laminate, and an image display device. A photo-alignment copolymer according to the embodiment of the invention has a repeating unit A including a photo-alignment group, a repeating unit B including a crosslinkable group which causes a crosslinking reaction by the action of at least one selected from the group consisting of light, heat, an acid, and a base, and a repeating unit C including a cleaving group which decomposes by the action of at least one selected from the group consisting of light, heat, an acid, and a base to produce a polar group, and the repeating unit C has the cleaving group on a side chain, and has a group of atoms which is provided on a side closer to a terminal than the cleaving group on the side chain to be able to unevenly distribute the photo-alignment copolymer on an air interface side.

Photo-alignment copolymer, binder composition, binder layer, optical laminate, and image display device

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Kanagawa, Japan

Soichiro Watanabe