Liquid crystal alignment agent, liquid crystal alignment film and liquid crystal display element

The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film and a liquid crystal display element. The present invention provides the liquid crystal alignment agent which can form the liquid crystal alignment film that represents excellent liquid crystal alignme...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAMOTO YOSHIKAZU, KOYAMA TAKAYOSHI, EIJI RIN
Format:	Patent
Sprache:	chi ; 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 MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS 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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Beschreibung
Zusammenfassung:	The present invention relates to a liquid crystal alignment agent, a liquid crystal alignment film and a liquid crystal display element. The present invention provides the liquid crystal alignment agent which can form the liquid crystal alignment film that represents excellent liquid crystal alignment controlling force (tile angle expressiveness of liquid crystal) and can restrain the DC accumulation when exerted with heat stress that is taken as a main reason of liquid crystal panel hot-damage. The liquid crystal alignment agent comprises the polymer of specific repetitive elements represented by the right formula (1-1) and at least one polymer selected from a group which is composed of polyamic acid and the imidization polymer thereof, wherein the polyamic acid is obtained through the reaction between the tetracarboxylic dianhydride and the diamine. In the formula (1-1), R is hydrogen atom or methyl.