Invention Grant
- Patent Title: Protective film, optical film, laminate, polarizing plate, image display device and method for producing polarizing plate
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Application No.: US16091249Application Date: 2017-03-31
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Publication No.: US11312794B2Publication Date: 2022-04-26
- Inventor: Toshiki Iwasaki , Kazuya Honda , Yukimitsu Iwata
- Applicant: Dai Nippon Printing Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Burr & Brown, PLLC
- Priority: JPJP2016-077044 20160407,JPJP2016-077045 20160407
- International Application: PCT/JP2017/013557 WO 20170331
- International Announcement: WO2017/175674 WO 20171012
- Main IPC: C08F2/48
- IPC: C08F2/48 ; G02B5/30 ; G02B1/14 ; G02F1/1335 ; C08F220/28 ; C08F222/10
Abstract:
According to one aspect of the present invention, a base material-less protective film used in a polarizing plate is provided, wherein the protective film comprises a core layer containing a resin made of a cured product, and an adhesion-improving layer provided on one surface of the core layer, and wherein a surface of the adhesion-improving layer forms one surface of the protective film, and the thickness of the protective film is less than 40 μm, and the tensile break strength of the protective film is 30 N/mm2 or more.
Public/Granted literature
Information query
