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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10908338 B1

PDFFull Text
Date of Patent:
Feb. 02, 2021

Filed:

Feb. 04, 2019

Optical film, polarizing plate, and image display device

Applicant:

Fujifilm Corporation, Tokyo, JP;

Inventors:

Shunya Katoh, Kanagawa, JP;

Koji Iijima, Kanagawa, JP;

Mitsuyoshi Ichihashi, Kanagawa, JP;

Masaru Yoshikawa, Kanagawa, JP;

Assignee:

FUJIFILM Corporation, Tokyo, JP;

Attorneys:

Edwards Neils LLC

Jean C. Edwards, Esq.

Primary Examiner:

Ruiyun Zhang

Int. Cl.
CPC ...
G02B 5/30 (2006.01); C08F 2/44 (2006.01); G02F 1/13363 (2006.01); C09K 19/40 (2006.01); C09D 133/14 (2006.01); H01L 51/52 (2006.01); C08J 7/18 (2006.01); C09K 19/34 (2006.01); G09F 9/30 (2006.01); C09K 19/00 (2006.01); G02F 1/1335 (2006.01); G02F 1/1337 (2006.01); C08F 226/10 (2006.01); C08F 220/06 (2006.01); C08F 220/30 (2006.01); C08F 222/10 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3025 (2013.01); C08F 2/44 (2013.01); C08J 7/18 (2013.01); C09D 133/14 (2013.01); C09K 19/00 (2013.01); C09K 19/3444 (2013.01); C09K 19/404 (2013.01); G02F 1/1337 (2013.01); G02F 1/13363 (2013.01); G02F 1/133528 (2013.01); G09F 9/30 (2013.01); H01L 51/5281 (2013.01); C08F 220/06 (2013.01); C08F 220/303 (2020.02); C08F 222/1025 (2020.02); C08F 222/1035 (2020.02); C08F 222/1045 (2020.02); C08F 226/10 (2013.01); C08J 2301/12 (2013.01); C08J 2345/00 (2013.01); C08J 2433/14 (2013.01); C08J 2467/07 (2013.01); C09K 2323/00 (2020.08); C09K 2323/03 (2020.08); G02B 5/3008 (2013.01); G02B 5/3016 (2013.01); G02F 2001/133742 (2013.01); G02F 2001/133746 (2013.01);
Abstract

The present invention provides an optical film exhibiting high alignment and good phase difference development in an oblique direction, and a polarizing plate and an image display device using the same. This optical film of the present invention has a substrate; and a phase difference layer which is provided on the substrate to be adjacent to the substrate, in which the phase difference layer is a layer formed by fixing vertical alignment of a liquid crystal compound having a polymerizable group included in a liquid crystal composition containing the liquid crystal compound and a polymer compound, a difference in δa value between the polymer compound and the substrate, which is calculated using three-dimensional SP values, is 3 or less, and a content of the polymer compound is less than 10 parts by mass with respect to 100 parts by mass of the liquid crystal compound.

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