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.:
Date of Patent:
Jul. 26, 2016
Filed:
Nov. 17, 2014
Jnc Corporation, Tokyo, JP;
Jnc Petrochemical Corporation, Tokyo, JP;
Yoshiharu Hirai, Chiba, JP;
Nagahisa Miyagawa, Chiba, JP;
Daisuke Ootsuki, Chiba, JP;
Mayumi Tanabe, Chiba, JP;
Kazumi Nara, Chiba, JP;
JNC CORPORATION, Tokyo, JP;
JNC PETROCHEMICAL CORPORATION, Tokyo, JP;
Abstract
To provide an optically anisotropic substance having a negative uniaxial phase difference film and a positive uniaxial phase difference film, and excellent heat resistance and sputtering resistance. The positive uniaxial phase difference film is formed in combination with a bifunctional polymerizable liquid crystal compound, the negative uniaxial phase difference film is formed in combination of the bifunctional polymerizable liquid crystal compound with an optically active compound having a polymerizable binaphthol moiety, and additional thermosetting treatment (postcure) is applied after the negative uniaxial phase difference film is photocured, and when glass transition temperature after the negative uniaxial phase difference film is cured is 85° C. or higher and 115° C. or lower, additional thermosetting treatment temperature is adjusted to 220° C. or higher and 250° C. or lower, and when the glass transition temperature is higher than 115° C., the additional thermosetting treatment temperature is adjusted to 200° C. or higher and 250° C. or lower.