COMPOSITION FOR OPTICALLY ORIENTED LIQUID CRYSTAL ORIENTED FILM, OPTICALLY ORIENTED LIQUID CRYSTAL ORIENTED FILM, SUBSTRATE FOR NIPPING LIQUID CRYSTAL AND LIQUID CRYSTAL DISPLAY DEVICE

COMPOSITION FOR OPTICALLY ORIENTED LIQUID CRYSTAL ORIENTED FILM, OPTICALLY ORIENTED LIQUID CRYSTAL ORIENTED FILM, SUBSTRATE FOR NIPPING LIQUID CRYSTAL AND LIQUID CRYSTAL DISPLAY DEVICE

PROBLEM TO BE SOLVED: To obtain the subject composition capable of providing orientation functions by optical orientation without carrying out a rubbing treatment, excellent in heat resistance, reliability, etc., and useful for liquid crystal nipping substrates and liquid crystal display devices by...

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Bibliographische Detailangaben
Hauptverfasser: KANETANI YUICHI, OKUDA NAOKI
Format: Patent
Sprache:eng
Schlagworte:
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
METALLURGY
NON-LINEAR OPTICS
OPTICAL ANALOGUE/DIGITAL CONVERTERS
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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Zusammenfassung:PROBLEM TO BE SOLVED: To obtain the subject composition capable of providing orientation functions by optical orientation without carrying out a rubbing treatment, excellent in heat resistance, reliability, etc., and useful for liquid crystal nipping substrates and liquid crystal display devices by including a specific polyimide or its precursor. SOLUTION: This composition comprises preferably 1-20 wt.% of a polyimide having a recurring unit represented by formula I or II (X is a tetravalent organic group; Y is a bivalent organic group) and further a bivalent organic group such as formula III (R1 to R4 are each H, CH3 or CH2CH3) or the like as a part of Y or its precursor. The above polyimide precursor is obtained by reacting a tetracarboxylic dianhydride (e.g. 3,3',4,4'- benzophenonetetracarboxylic dianhydride) with a diamine compound (e.g. 2,4,6- trimetyl-1,3-phenylenediamine) preferably at