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Patent Searching and Data


Title:
POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/070131
Kind Code:
A1
Abstract:
This polarizing plate (5) is constituted by layering a first protective film (optical film (12)), a polarizer (11), and a second protective film (optical film (13)) in this order. The retardation value Ro of the second protective film in the in-plane direction and the retardation value Rt thereof in the thickness direction are within predetermined ranges. The difference between the Y.I value indicating the yellowness index of the first protective film and the Y.I value indicating the yellowness index of the second protective film is 0.4 or less. Only the second protective film includes a bend inhibitor that has an ultraviolet-absorbing function and that inhibits bending caused by water absorption by converting absorbed ultraviolet light into heat.

Inventors:
KANEKO YUKI (JP)
NANJIYOU TAKASHI (JP)
Application Number:
PCT/JP2017/031507
Publication Date:
April 19, 2018
Filing Date:
September 01, 2017
Export Citation:
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Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G02B5/30; B32B7/02; B32B23/08; G02F1/1335
Domestic Patent References:
WO2015133356A12015-09-11
Foreign References:
JP2015141347A2015-08-03
JP5348356B12013-11-20
JP2007199392A2007-08-09
Attorney, Agent or Firm:
SANO PATENT OFFICE (JP)
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