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:
Jan. 14, 2020
Filed:
Aug. 31, 2011
Tatsuya Araki, Ibaraki, JP;
Seiji Kondo, Ibaraki, JP;
Hiroyuki Morikazu, Ibaraki, JP;
Takashi Shimizu, Ibaraki, JP;
Hiroaki Sawada, Ibaraki, JP;
Tatsuya Araki, Ibaraki, JP;
Seiji Kondo, Ibaraki, JP;
Hiroyuki Morikazu, Ibaraki, JP;
Takashi Shimizu, Ibaraki, JP;
Hiroaki Sawada, Ibaraki, JP;
NITTO DENKO CORPORATION, Ibaraki-shi, JP;
Abstract
The present invention provides a method of producing a thin polarizing film having both excellent optical characteristics and excellent in-plane uniformity. The method of producing a thin polarizing film includes stretching a thermoplastic resin substrate in a first direction, followed by formation of a polyvinyl alcohol-based resin layer on the thermoplastic resin substrate to prepare a laminate and shrinking and stretching the laminate in the first direction and a second direction, respectively.