BRIGHTNESS IMPROVEMENT FILM, OPTICAL SHEET MEMBER, AND LIQUID CRYSTAL DISPLAY DEVICE

WIPO Patent Application WO/2015/122479

A1

The present invention provides a brightness improvement film having a λ/4 plate and a reflective polarizer, wherein: the reflective polarizer contains a first light-reflecting layer and a second light-reflecting layer, in this order from the λ/4-plate side thereof; the first light-reflecting layer and the second light-reflecting layer are both light-reflecting layers obtained by fixing a cholesteric liquid crystal phase; the first light-reflecting layer or the second light-reflecting layer is a layer formed from a polymerizable liquid crystal composition containing a rod-shaped liquid crystal compound; and the other light-reflecting layer is a layer formed from a polymerizable liquid crystal composition containing a disc-shaped liquid crystal compound. The present invention also provides an optical sheet member containing the brightness improvement film, and a liquid crystal display device containing the optical sheet member. When incorporated into a liquid crystal display device, this brightness improvement film exhibits a high degree of brightness and is capable of suppressing changes in color at an oblique angle.

JP2008106157	CELLULOSE N-SUBSTITUTED CARBAMATE, COATING FILM USING THE SAME, COATING FILM FOR OPTICAL COMPENSATION, POLARIZING PLATE, LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR PRODUCING THE SAME
JP2013210583	ANTIREFLECTION FILM AND METHOD FOR MANUFACTURING THE SAME AS WELL AS ANTIREFLECTIVE POLARIZING PLATE AND TRANSMISSION TYPE LIQUID CRYSTAL DISPLAY
WO/2020/168661	EMBEDDED TOUCH LIQUID CRYSTAL DISPLAY

TAKEDA JUN (JP)
MATSUDA YUKI (JP)
AKUTAGAWA NOBUYUKI (JP)
YASUDA KOTARO (JP)
OHMURO KATSUFUMI (JP)
NISHIKAWA HIDEYUKI (JP)
WATANO AKIKO (JP)
SAITOH YUKITO (JP)
ICHIHASHI MITSUYOSHI (JP)
HOSHINO WATARU (JP)
ISHIKAWA HIROYUKI (JP)

PCT/JP2015/053904

August 20, 2015

February 13, 2015

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FUJIFILM CORP (JP)

G02F1/1335; G02B5/30; G02F1/13357; G02F1/13363

JP2001183643A	2001-07-06
JP2001004843A	2001-01-12
JP2001290022A	2001-10-19
JP2003270443A	2003-09-25

SIKs & Co. (JP)
Patent business corporation patent firm Sykes (JP)

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