Title:
POLARIZATION ELEMENT, POLARIZATION PLATE HAVING SAID POLARIZATION ELEMENT, AND LIQUID CRYSTAL DISPLAY DEVICE HAVING SAID POLARIZATION ELEMENT OR SAID POLARIZATION PLATE
Document Type and Number:
WIPO Patent Application WO/2016/035838
Kind Code:
A1
Abstract:
Provided is a polarization element that can achieve achromatic white during white display and achromatic black in black display while having high transmittance.
The polarization element is formed from a base material containing an azo compound as a constituent component and is characterized by the unit transmittance being 35 - 80% and by the absolute values for the chromaticity a* value and b* value found according to JIS Z 8781-4:2013 during transmittance measurements for natural light being 1 or less in a single polarized light element, 2 or less in a state where two polarization elements are disposed such that the direction of the absorption axes for the same are parallel to each other, and 2 or less in a state where two polarization elements are disposed such that the direction of the absorption axes for the same are orthogonal to each other.
Inventors:
MOCHIZUKI NORIAKI (JP)
Application Number:
PCT/JP2015/075017
Publication Date:
March 10, 2016
Filing Date:
September 02, 2015
Export Citation:
Assignee:
NIPPON KAYAKU KK (JP)
POLATECHNO CO LTD (JP)
POLATECHNO CO LTD (JP)
International Classes:
G02B5/30; C09B31/072; C09B33/28; C09B45/28; G02F1/1335
Domestic Patent References:
| WO2010095447A1 | 2010-08-26 | |||
| WO2013141236A1 | 2013-09-26 | |||
| WO2012165223A1 | 2012-12-06 | |||
| WO2015111472A1 | 2015-07-30 |
Foreign References:
| JP2013210624A | 2013-10-10 | |||
| JPH05295281A | 1993-11-09 | |||
| JP2013057909A | 2013-03-28 |
Attorney, Agent or Firm:
EINSEL Felix-Reinhard et al. (JP)
アインゼル Felix-Reinhardt (JP)
アインゼル Felix-Reinhardt (JP)
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