Optical film, optical compensation film, polarization sheet and liquid crystal device using same

An optical film is provided and contains at least one of a polycarbonate copolymer and a blend containing the polycarbonate copolymer. The polycarbonate copolymer contains specific repeating units. The optical film satisfies the following formulae (1) to (4). 0.1<Re(450)/Re(550)<0.95 (1) 1.03&...

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Bibliographic Details
Main Author NAKAYAMA MOTO,OHASHI YUSUKE
Format Patent
LanguageEnglish
Published 21.02.2007
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An optical film is provided and contains at least one of a polycarbonate copolymer and a blend containing the polycarbonate copolymer. The polycarbonate copolymer contains specific repeating units. The optical film satisfies the following formulae (1) to (4). 0.1<Re(450)/Re(550)<0.95 (1) 1.03<Re(650)/Re(550)<1.93 (2) 0.4<(Re(450)/Rth(450))/(Re(550)/Rth(550))<0.95 (3) 1.05<(Re(650)/Rth(650))/(Re(550)/Rth(550))<1.90 (4)
Bibliography:Application Number: CN200610115041