公开(公告)号：US20200231770A1

公开(公告)日：2020-07-23

申请号：US16476627

申请日：2018-01-18

Applicant: ZEON CORPORATION

Inventor： Sogo KOMOTO

IPC: C08J5/18 ,  G02B1/04 ,  G02B1/12

Abstract: An optical film including, as a main component, a crystallized resin containing an alicyclic structure-containing polymer, wherein a crystallization degree of the crystallized resin is 30% or more, and an arithmetic average roughness of at least one face thereof is 2.5 nm or less. Preferably, in a surface layer on the side of at least one face, a composition ratio of an oxygen element relative to a carbon element is 1/10 or more, and a composition ratio of a nitrogen element relative to a carbon element is 1/20 or less. Also provided is a multilayer film including: the optical film; an adherend layer; and an adhesive layer provided between the optical film and the adherend layer.

公开(公告)号：US20190275776A1

公开(公告)日：2019-09-12

申请号：US16343054

申请日：2017-10-25

Applicant: ZEON CORPORATION

Inventor： Sogo KOMOTO

IPC: B32B27/40 ,  B32B27/36 ,  B32B7/12

Abstract: An optical film, etc., including a first layer, and an easy-adhesion layer disposed on at least one surface of the first layer, wherein the first layer is a layer of a crystallized resin including an alicyclic structure-containing polymer, and the easy-adhesion layer is a layer of a urethane resin; and a method for producing the optical film including a step (1) of molding a crystallizable resin including an alicyclic structure-containing polymer to obtain a crystallizable resin film having a crystallization degree of less than 3%; a step (2) of forming an easy-adhesion layer on the surface of the crystallizable resin film to obtain a multilayer product including the crystallizable resin film and the easy-adhesion layer; and a step (4) of crystallizing the crystallizable resin film in the multilayer product.

公开(公告)号：US20210198574A1

公开(公告)日：2021-07-01

申请号：US16963250

申请日：2019-01-21

Applicant: ZEON CORPORATION

Inventor： Wataru NAKANO ,  Sogo KOMOTO ,  Manabu ITO ,  Yasunori II

IPC: C09K19/04 ,  C08F222/10 ,  C08F2/50 ,  C08F2/40

Abstract: A composition includes a polymerizable liquid crystal compound (A), a photopolymerization initiator (B), and a crosslinking agent (C), and satisfies: |λa1−λb1|≤20 nm   (i), and λc1≤250 nm   (ii), where λa1 represents a wavelength of an absorption local maximum that is the longest one of wavelengths of absorption local maxima in a light absorption spectrum of from 200 nm to 500 nm of the polymerizable liquid crystal compound (A), λb1 represents a wavelength of an absorption local maximum that is the longest one of wavelengths of absorption local maxima in a light absorption spectrum of from 200 nm to 500 nm of the photopolymerization initiator (B), and λc1 represents a wavelength of at least one absorption local maximum in a light absorption spectrum of from 200 nm to 500 nm of the crosslinking agent (C)).

公开(公告)号：US20180173045A1

公开(公告)日：2018-06-21

申请号：US15738722

申请日：2016-07-06

Applicant: ZEON CORPORATION

Inventor： Sogo KOMOTO

IPC: G02F1/1335 ,  B32B3/26 ,  B32B27/06 ,  B32B27/30 ,  B32B27/32 ,  G02B5/02

CPC classification number: G02F1/133504 ,  B32B3/266 ,  B32B7/02 ,  B32B27/06 ,  B32B27/306 ,  B32B27/32 ,  B32B2307/42 ,  B32B2457/202 ,  G02B5/02 ,  G02B5/0247 ,  G02B5/0268 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/133528

Abstract: The present invention provides a viewing angle expansion film which realizes visual recognition in wide viewing angle range, as well as a polarizing plate and a liquid crystal display device having the viewing angle expansion film. A viewing angle expansion film for expanding a viewing angle range including a plurality of hole-containing portions, which are approximately parallel to each other, on at least one surface of the viewing angle expansion film, wherein the hole-containing portion contains a hole, and is preferably constituted by crazes; as well as a polarizing plate and a liquid crystal display device having the viewing angle expansion film.