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Patent Searching and Data


Title:
POLYESTER FILM FOR PROTECTING POLARIZER AND LIQUID CRYSTAL DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/026891
Kind Code:
A1
Abstract:
[Problem] To provide a polyester film for protecting a polarizer which, even with a liquid crystal display device having a simple structure in which no light diffusing sheet is provided between a light source and a polarizing plate, makes it possible to achieve high uniformity in light diffused in an intended angle and limit unevenness in light source brightness similarly to conventional liquid crystal display devices that employ a light diffusing sheet. [Solution] This polyester film for protecting a polarizer has, as a base material, a polyester film that has an in-plane retardation (Re) of 5000 to 30000 nm, and has, on at least one surface of the base material, an easily adhesive layer (P1) that comprises polyvinyl alcohol, and a light diffusing layer that comprises acrylic resin beads and a binder resin, in the stated order.

Inventors:
YAMAGUCHI YOHEI (JP)
ITO KATSUYA (JP)
Application Number:
JP2019/028796
Publication Date:
February 06, 2020
Filing Date:
July 23, 2019
Export Citation:
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Assignee:
TOYO BOSEKI (JP)
International Classes:
G02B5/30; G02B5/02; G02F1/1335; G02F1/13357; H01L51/50
Foreign References:
JP2014059334A2014-04-03
JP2016200817A2016-12-01
JP2015022200A2015-02-02
KR20130074665A2013-07-04
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