Liquid crystal alignment agent, liquid crystal alignment membrane and its forming method, liquid crystal element, polymer and chemical compound

To provide a liquid crystal alignment agent which can form a liquid crystal alignment membrane for making compatible both high-rubbing resistance and a favorable voltage holding characteristic, can suppress the generation of sublimation foreign matters when forming the liquid crystal alignment membr...

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Hauptverfasser:	TANAKA, TAKAFUMI, FUJISHITA, SHOUHEI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS 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 CHEMISTRY 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:	To provide a liquid crystal alignment agent which can form a liquid crystal alignment membrane for making compatible both high-rubbing resistance and a favorable voltage holding characteristic, can suppress the generation of sublimation foreign matters when forming the liquid crystal alignment membrane by using an optical alignment method, and can obtain a liquid crystal element which is excellent in vibration resistance. A polymer [P] selected from a group which is composed of a polyamic acid, polyamic acid ester and polyimide, and having a partial structure expressed by a formula (1) as a main chain is contained in a liquid crystal alignment agent. In the formula, R1 and R2 are a hydrogen atom or a monovalent organic group independently. X1 is a single-bond or divalent organic group. D 1 is a monovalent group which is replaced to a hydrogen atom by at least any of heat, light, an acid and a base. "*" expresses a bonding hand for bonding atoms constituting a polymer main chain.