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Title:
POLARIZER, ONE-SIDE-PROTECTED POLARIZING FILM, POLARIZING FILM INCLUDING ADHESIVE LAYER, AND IMAGE DISPLAY DEVICE AND METHOD FOR CONTINUOUSLY MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2017/145607
Kind Code:
A1
Abstract:
A polarizer according to the present invention which is used for a polarizing film having an adhesive layer on one side of the polarizer is configured to contain boric acid and a polyvinyl alcohol-based resin, to have a thickness of not greater than 10 μm, and to have an optical property satisfying the condition represented by the expression: P > -(100.929T-42.4 - 1) × 100 (when T < 42.3) or P ≥ 99.9 (when T ≥ 42.3), wherein T represents the single-body transmittance and P represents the degree of polarization. In addition, a boric acid content (a) measured from one side on which the adhesive layer in the polarizer is provided is less than a boric acid content (b) measured from the other side. The polarizer according to the present invention can reduce defects due to through-cracks and nanoslits even when the polarizer has a predetermined optical property and has a thickness of not greater than 10 μm.

Inventors:
UENO TOMONORI (JP)
MITA SATOSHI (JP)
XU JINGFAN (JP)
MOTEGI YUSUKE (JP)
KISHI ATSUSHI (JP)
Application Number:
PCT/JP2017/002133
Publication Date:
August 31, 2017
Filing Date:
January 23, 2017
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; G02F1/1335
Domestic Patent References:
WO2011125958A12011-10-13
Foreign References:
JP4751481B12011-08-17
JP5189507B22013-04-24
JP2015129826A2015-07-16
JP5504232B22014-05-28
JP2015161782A2015-09-07
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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