POLARIZING PLATE AND DISPLAY DEVICE USING SAME

WIPO Patent Application WO/2023/243655

A1

The present invention provides: a polarizing plate that has durability in high-temperature and high-humidity environments while also being a thin film with high flexibility; and a display device using the polarizing plate. Provided is a polarizing plate in which a protective film A is affixed to one surface of a polarizer and a protective film B is affixed to the other surface of the polarizer, said polarizing plate being characterized in that: the moisture permeability TA of the protective film A and the moisture permeability TB of the protective film B at 40°C and 90% RH satisfy conditions (1) and (2) simultaneously; the protective film A has a hardcoat layer comprising a cured film of a composition which contains a photopolymerization initiator and a (meth)acrylate compound which includes an alicyclic structure, and in which the content ratio of the (meth)acrylate compound including the alicyclic structure is not less than 20 mass% of the entire solid content; and the thickness of the protective film A is less than 50 μm.　(1): 240g/m2/day>TA>70g/m2/day. (2): 70g/m2/day≥TB.

ARAYA YUSUKE
KIM KEON
KAWATA SHIN
ARAHORI KAZUMASA

PCT/JP2023/022054

December 21, 2023

June 14, 2023

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TOPPAN TOMOEGAWA OPTICAL FILMS CO LTD (JP)

G02B5/30; C09D4/02; G02B1/04; G02B1/14; G02F1/1335; G09F9/00; H10K50/86; H10K59/10

JP2021144076A	2021-09-24
JP2017066380A	2017-04-06
JP2021189259A	2021-12-13
JP2018127610A	2018-08-16
JP2017119847A	2017-07-06
JP2022181008A	2022-12-07

OGASAWARA PATENT OFFICE (JP)

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