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

The invention provides a liquid crystal alignment agent comprising a first polymer. The first polymer is formed through the polymerization of di-amine compounds with tetracarboxylic dianhydride compounds. The main chain structure of the first polymer comprises a rigid aromatic group and tertiary ami...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LEE PO-I, LIN KUAN-MING, LAI MINGIH, CHANG LI-HSIN, WEI TSUUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVES 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 DYES FREQUENCY-CHANGING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PHYSICS POLISHES TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention provides a liquid crystal alignment agent comprising a first polymer. The first polymer is formed through the polymerization of di-amine compounds with tetracarboxylic dianhydride compounds. The main chain structure of the first polymer comprises a rigid aromatic group and tertiary amine residues a symmetrical structure, wherein the content of the aromatic group is 30 mole percents to 70 mole percents of the main chain structure of the first polymer. In this way, a liquid crystal alignment film prepared by the liquid crystal alignment agent is low in ghosting characteristics, lowin the variation degree of pre-tilt angles, exceelnt in film-forming properties, good in alignment resistance and high in reliability. 一种液晶取向剂，包含第一聚合物。第一聚合物是由二胺类化合物与四羧酸二酐类化合物聚合而得，且第一聚合物的主链结构包含具有对称性与刚性的芳香基以及三级胺残基，其中前述芳香基的含量占第一聚合物的主链结构30摩尔百分比至70摩尔百分比。由此液晶取向剂所制成之液晶取向膜具有低残影特性、低预倾角变异度、优良成膜性、优良取向性以及高可靠性。