Invention Grant
- Patent Title: Method of manufacturing polarizing plate
- Patent Title (中): 偏光板的制造方法
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Application No.: US13991278Application Date: 2011-12-01
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Publication No.: US09411081B2Publication Date: 2016-08-09
- Inventor: Takashi Shimizu , Takashi Kamijo , Hitoshi Kitagishi , Minoru Miyatake , Shusaku Goto , Takeharu Kitagawa , Tomohiro Mori , Nobuyuki Haida
- Applicant: Takashi Shimizu , Takashi Kamijo , Hitoshi Kitagishi , Minoru Miyatake , Shusaku Goto , Takeharu Kitagawa , Tomohiro Mori , Nobuyuki Haida
- Applicant Address: JP Osaka
- Assignee: NITTO DENKO CORPORATION
- Current Assignee: NITTO DENKO CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2010-269658 20101202; JP2011-122663 20110531
- International Application: PCT/JP2011/077820 WO 20111201
- International Announcement: WO2012/074063 WO 20120607
- Main IPC: G02B5/30
- IPC: G02B5/30 ; B29C55/04 ; B29C55/02 ; B29K29/00 ; B29K67/00
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 (10) that includes a polyester resin base (11) 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 (12) laminated on the polyester resin base (11); dyeing the polyvinyl alcohol resin layer (12); and crystallizing the polyester resin base (11). The crystallization step is performed after the dyeing step.
Public/Granted literature
- US20130249129A1 METHOD OF MANUFACTURING POLARIZING PLATE Public/Granted day:2013-09-26
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