RETARDATION FILM AND ITS USE AND MANUFACTURING METHOD

• Main Authors: SEKIGUCHI MASAYUKI, SUGIYAMA NAOKI, FUKUSE YOSUKE
• Format: Patent
• Language: English
• Published: 21.08.2008
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PROBLEM TO BE SOLVED: To provide a norbornene-based resin-made optical film excellent in the adhesion to a polarizing membrane and in such characteristics as transparency, heat resistance and chemical resistance and capable of maintaining excellent antistatic performance over a long period and a manufacturing method thereof, and to provide such a polarizing plate using this optical film that has a high reliability hardly to cause the delamination and deformation in a long-period use and has little biting of foreign matters from the environment in the manufacturing process, and also to provide a liquid crystal display using this polarizing plate. SOLUTION: The optical film with an antistatic performance is characterized by comprising a laminate of (A) a norbornene-based resin film and (B) an antistatic layer comprising (b1) a specified acrylic resin having in the side chain a quaternary ammonium salt and (b2) an antistatic coating material containing a hardener of a polyethylene-imine and/or a polyhydroxyalkane polyglycidyl ether. COPYRIGHT: (C)2008,JPO&INPIT