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:
Aug. 09, 2016
Filed:
Dec. 01, 2011
Takashi Shimizu, Ibaraki, JP;
Takashi Kamijo, Ibaraki, JP;
Hitoshi Kitagishi, Ibaraki, JP;
Minoru Miyatake, Ibaraki, JP;
Shusaku Goto, Ibaraki, JP;
Takeharu Kitagawa, Ibaraki, JP;
Tomohiro Mori, Ibaraki, JP;
Nobuyuki Haida, Ibaraki, JP;
Takashi Shimizu, Ibaraki, JP;
Takashi Kamijo, Ibaraki, JP;
Hitoshi Kitagishi, Ibaraki, JP;
Minoru Miyatake, Ibaraki, JP;
Shusaku Goto, Ibaraki, JP;
Takeharu Kitagawa, Ibaraki, JP;
Tomohiro Mori, Ibaraki, JP;
Nobuyuki Haida, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
The present invention provides a method of manufacturing a polarizing plate having sufficient heat resistance, without deteriorating the dye-affinity and the like of the polarizing film and without the necessity of transferring or detaching the polarizing film. Provided is a method of manufacturing a polarizing plate () that includes a polyester resin base () and a polarizing film including a polyvinyl alcohol resin laminated on the polyester resin base. The method includes the steps of: stretching a laminate that includes a polyvinyl alcohol resin layer () laminated on the polyester resin base (); dyeing the polyvinyl alcohol resin layer (); and crystallizing the polyester resin base (). The crystallization step is performed after the dyeing step.