CELLULOSE ESTER OPTICAL FILM, OPTICAL FILM WITH HARD COATING LAYER, POLARIZING PLATE AND DISPLAY APPARATUS

PROBLEM TO BE SOLVED: To provide an optical film with a hard coating layer improved in interference irregularity, adhesion property and film curling property when a hard coating layer is formed on a film produced by a solution casting method substantially without using a chlorine-based solvent, and...

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Bibliographic Details
Main Author KUREMATSU MASAYUKI
Format Patent
LanguageEnglish
Published 09.06.2005
Edition7
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
CHEMISTRY
COMPOSITIONS BASED THEREON
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
LAYERED PRODUCTS
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
METALLURGY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICAL LOGIC ELEMENTS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICS
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
WORKING-UP
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Summary:PROBLEM TO BE SOLVED: To provide an optical film with a hard coating layer improved in interference irregularity, adhesion property and film curling property when a hard coating layer is formed on a film produced by a solution casting method substantially without using a chlorine-based solvent, and to provide a polarizing plate and a display apparatus using the above film. SOLUTION: The cellulose ester optical film is manufactured by a solution casting method by casting a dope prepared by dissolving a cellulose ester resin material in a solvent over a supporting body, releasing a web from the supporting body, drying and winding the web. The solvent contains an organic solvent selected from 2-12C ethers, 3-12C ketones, 2-12C esters and 1-12C alcohols. The residual amount of the organic solvent on winding the web is 0.1 to 2.0 mass% with respect to the cellulose ester optical film. COPYRIGHT: (C)2005,JPO&NCIPI
Bibliography:Application Number: JP20030380932