Title:
IMAGE DISPLAY PANEL AND IMAGE DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/225117
Kind Code:
A1
Abstract:
An image display panel which is obtained by sequentially stacking an image display cell, a first transparent protective film, an iodine-based polarizing film and a second transparent protective film in this order, wherein: the water vapor transmission rate of the first transparent protective film is lower than the water vapor transmission rate of the second transparent protective film, while being 200 g/(m2·24h) or less; and the iodine-based polarizing film satisfies the spectrum area ratio represented by general formula (1) b/a > 1 (in general formula (1), with respect to an embodiment of a polarizing film wherein the first transparent protective film is bonded to one surface of the iodine-based polarizing film and the second transparent protective film is bonded to the other surface of the iodine-based polarizing film, a represents the spectrum area from 80 cm-1 to 130 cm-1 as determined by Raman spectroscopy in a region at a depth from 1 μm to 1.5 μm from the first transparent protective film-side surface of the polarizing film, and b represents the spectrum area from 80 cm-1 to 130 cm-1 as determined by Raman spectroscopy in a region at a depth from 1 μm to 1.5 μm from the second transparent protective film-side surface of the polarizing film). The polarizing film in this image display panel exhibits excellent endurance at high temperatures.
Inventors:
YAGI SHIOMI (JP)
YAMASHITA TOMOHIRO (JP)
KUROHARA KAORU (JP)
KURODA TAKUMA (JP)
YUMINE TAKUYA (JP)
TAKADA KATSUNORI (JP)
YAMASHITA TOMOHIRO (JP)
KUROHARA KAORU (JP)
KURODA TAKUMA (JP)
YUMINE TAKUYA (JP)
TAKADA KATSUNORI (JP)
Application Number:
PCT/JP2021/017203
Publication Date:
November 11, 2021
Filing Date:
April 30, 2021
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
International Classes:
G02B5/30; G02F1/1335; H05B33/02
Domestic Patent References:
| WO2016013260A1 | 2016-01-28 |
Foreign References:
| JP2020046690A | 2020-03-26 | |||
| JP2006171707A | 2006-06-29 | |||
| JP2015052676A | 2015-03-19 | |||
| JP2014170223A | 2014-09-18 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
Download PDF:
Previous Patent: CIRCUIT MODULE AND COMMUNICATION DEVICE
Next Patent: INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD
Next Patent: INFORMATION PROCESSING DEVICE AND INFORMATION PROCESSING METHOD