Liquid crystal alignment agent and liquid crystal display element

The present invention relates to a liquid crystal alignment agent and a liquid crystal display element. The liquid crystal alignment agent has excellent printability even to the substrate with large graduation and can form the liquid crystal alignment film which can stably represent high tile angle....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NAKATA SHOICHI, 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 and a liquid crystal display element. The liquid crystal alignment agent has excellent printability even to the substrate with large graduation and can form the liquid crystal alignment film which can stably represent high tile angle. The liquid crystal alignment agent comprises at least one polymer selected from a group which is composed of polyamic acid and imidization polymer, wherein the imidization polymer is prepared through executing dehydration and loop closing to the polyamic acid. The polyamic acid is prepared through the reaction between the diamine and the tetracarboxylic dianhydride. The diamine comprises a specific compound which is represented by 3,5-diaminobenzoic-cholest-alkyl-ester and a specific compound represented by the compound of the following formula (B-1).