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Patent Searching and Data


Title:
POLARIZER MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/019826
Kind Code:
A1
Abstract:
The present invention provides a method for enabling easy manufacturing of a polarizer having excellent optical characteristics with little quality variation. This polarizer manufacturing method includes performing an extension process and a dyeing process on a polyvinyl alcohol resin film, and includes adding an iodine concentration adjustment liquid containing a reducing agent and boric acid to at least one of treatment baths used for the dyeing process and processes thereafter.

Inventors:
YAMAUCHI KENGO (JP)
SAWADA HIROAKI (JP)
MITA SATOSHI (JP)
Application Number:
PCT/JP2020/011446
Publication Date:
February 04, 2021
Filing Date:
March 16, 2020
Export Citation:
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Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; B29C55/06; G02F1/1335
Domestic Patent References:
WO2014065140A12014-05-01
WO2013103054A12013-07-11
Foreign References:
JP2013238640A2013-11-28
JP2012108202A2012-06-07
JP2015180921A2015-10-15
JP2015114612A2015-06-22
JP2013218106A2013-10-24
JP2013210516A2013-10-10
US20140168734A12014-06-19
Attorney, Agent or Firm:
MOMII Takafumi (JP)
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