Title:
DISPLAY DEVICE EQUIPPED WITH BASE MATERIAL HAVING POLARIZING FUNCTION
Document Type and Number:
Japanese Patent JP2019135557
Kind Code:
A
Abstract:
To provide a display device that can render white, render black, and produce crisp display, even in a darkened room with substantially no outside light.SOLUTION: A display device is equipped with base material (A) in which, in each wavelength transmittance obtained by measuring while making absorption axes of two substrates parallel to each other, average transmittance at 520 to 590 nm is 25% or greater, an absolute value of difference between the average transmittance at 420 to 480 nm and the average transmittance at 520 to 590 nm is within 2.5%, and the absolute value of the difference between the average transmittance at 520 to 590 nm and the average transmittance at 590 to 660 nm is within 2.0%; further in each wavelength transmittance obtained by measuring while making the absorption axes of the two substrates orthogonal to each other, the absolute value of the difference between the average transmittance at 420 to 480 nm and the average transmittance at 520 to 590 nm is within 0.3%, and the absolute value of the difference between the average transmittance at 520 to 590 nm and the average transmittance at 600 to 660 nm is within 0.3%.SELECTED DRAWING: None
Inventors:
MOCHIZUKI NORIAKI
ISHINABE TAKAHIRO
FUJIKAKE HIDEO
ISHINABE TAKAHIRO
FUJIKAKE HIDEO
Application Number:
JP2019079867A
Publication Date:
August 15, 2019
Filing Date:
April 19, 2019
Export Citation:
Assignee:
NIPPON KAYAKU KK
POLATECHNO CO LTD
UNIV TOHOKU
POLATECHNO CO LTD
UNIV TOHOKU
International Classes:
G02B5/30; C09B31/057; G02F1/1335
Domestic Patent References:
| JP2002221715A | 2002-08-09 | |||
| JP2003315550A | 2003-11-06 | |||
| JP2005128571A | 2005-05-19 |
Foreign References:
| WO2014162635A1 | 2014-10-09 | |||
| WO2012108169A1 | 2012-08-16 |
Attorney, Agent or Firm:
Makoto Ono
Kenkyo Kanayama
Mitsuaki Tsubokura
Kazuki Shigemori
Yoshikazu Iwase
Yasufumi Shiroyama
Kenkyo Kanayama
Mitsuaki Tsubokura
Kazuki Shigemori
Yoshikazu Iwase
Yasufumi Shiroyama