POLYIMIDE, POLYIMIDE VARNISH, OPTICAL COMPENSATION FILM AND POLYIMIDE, AND PRODUCTION METHOD OF OPTICAL COMPENSATION FILM

PROBLEM TO BE SOLVED: To provide a polyimide useful as an optical compensation film material for a liquid crystal display, which has all of high transparency, high reflectivity, low wavelength dispersion property of birefringence of visible light region wave length, high solubility in an organic sol...

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Hauptverfasser:	HASEGAWA MASATOSHI, MATSUTANI AKIO, AKINAGA TAKAHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	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 MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 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
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a polyimide useful as an optical compensation film material for a liquid crystal display, which has all of high transparency, high reflectivity, low wavelength dispersion property of birefringence of visible light region wave length, high solubility in an organic solvent and sufficient membrane toughness, and to provide an optical compensation film using the polyimide. SOLUTION: A polyimide having a recurring unit containing a cyclobutane residue and a recurring unit containing no cyclobutane residue is provided. By the polyimide, a polyimide useful as an optical compensation film material for liquid crystal display and having all of high transparency, high reflectivity, low wavelength dispersion property of birefringence of visible light region wave length, high solubility in an organic solvent and sufficient membrane toughness, and the optical compensation film using the polyimide can be provided. COPYRIGHT: (C)2009,JPO&INPIT