RETARDATION FILM

PROBLEM TO BE SOLVED: To provide a retardation film that suppresses a variation of a retardation value with respect to a change in environment, in particular, a change in humidity, and has excellent stability of optical performance.SOLUTION: A retardation film contains a resin composition blended wi...

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Bibliographic Details
Main Authors KURODA TSUYOSHI, SHIROYAMA YASUHIKO, TAKEYAMA TETSUYA, WATANABE KAZUAKI, UEDA MASAHARU, OKAWA KOJIRO, KARASAWA MASAYOSHI, FUJITANI MASAHIRO
Format Patent
LanguageEnglish
Published 03.07.2014
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING
FREQUENCY-CHANGING
GENERAL PROCESSES OF COMPOUNDING
METALLURGY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To provide a retardation film that suppresses a variation of a retardation value with respect to a change in environment, in particular, a change in humidity, and has excellent stability of optical performance.SOLUTION: A retardation film contains a resin composition blended with cellulose acylate and a polymer having a polar group; and a retardation value Re(450) at a wavelength of 450 nm and a retardation value Re(550) at a wavelength of 550 nm satisfy the following formula (1): Re(450)/Re(550)=0.78 to 0.98.
Bibliography:Application Number: JP20120279568