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Title:
ACHROMATIC POLARIZATION ELEMENT, AND POLARIZATION PLATE
Document Type and Number:
WIPO Patent Application WO/2014/162633
Kind Code:
A1
Abstract:
[Problem] To provide a highly-transmissive polarization plate that can express achromatic white when a polarization element is arranged parallel to an absorbing axis, and achromatic black when the polarization element is arranged orthogonal to the absorbing axis. [Solution] a* and b* values, which define the hue of a polarization element or a polarization plate using JIS·Z·8729, are adjusted such that the absolute value of the a* and b* values is: less than 1 during a single-body transmittance measurement; less than 2 when two sheets of a base material are arranged parallel to the absorbing axis direction and the a* and b* values are measured; and less than 2 when two sheets of the base material are arranged orthogonal to the absorbing axis direction and the a* and b* values are measured.

Inventors:
MOCHIZUKI NORIAKI (JP)
Application Number:
PCT/JP2013/082625
Publication Date:
October 09, 2014
Filing Date:
December 04, 2013
Export Citation:
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Assignee:
NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)
International Classes:
G02B5/30; G02F1/1335; C09B45/28
Domestic Patent References:
WO2007148757A12007-12-27
WO2009142192A12009-11-26
Foreign References:
JP2001311827A2001-11-09
JP2012003172A2012-01-05
JPH11281817A1999-10-15
JP2004251962A2004-09-09
JP4162334B22008-10-08
JP2013048742A2013-03-14
JPH06337312A1994-12-06
JP2013174786A2013-09-05
JP4281261B22009-06-17
JP3357803B22002-12-16
JP2001033627A2001-02-09
JP2002296417A2002-10-09
JPS60156759A1985-08-16
JP2003215338A2003-07-30
JPH09302250A1997-11-25
JP3881175B22007-02-14
JP4452237B22010-04-21
JP4662853B22011-03-30
JPS645623B21989-01-31
JP2622748B21997-06-18
JP4825135B22011-11-30
JP4033443B22008-01-16
JP4162334B22008-10-08
JP2008065222A2008-03-21
JPH11218611A1999-08-10
Other References:
See also references of EP 2983019A4
"Kinosei Shikiso no Oyo", CMC SHUPPAN CO., LTD., pages: 98 - 100
Attorney, Agent or Firm:
IWASE Yoshikazu et al. (JP)
Iwase Yoshiwa (JP)
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