TWI823833B

A liquid crystal alignment agent which can suppress poor coating of the alignment film occurring due to the effects of C/H or the wiring structure, and display non-uniformities in a liquid crystal element, and which further increases the resin component ratio while reducing viscosity of the liquid c...

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Bibliographische Detailangaben
Hauptverfasser:	HASHIMOTO, JUN, ISHIKAWA, KAZUNORI, NAKAHARA, SHOICHIRO, LEE, JU YOUNG
Format:	Patent
Sprache:	chi
Schlagworte:	ADHESIVES 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 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 ELEMENTS, SYSTEMS, OR APPARATUS 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:	A liquid crystal alignment agent which can suppress poor coating of the alignment film occurring due to the effects of C/H or the wiring structure, and display non-uniformities in a liquid crystal element, and which further increases the resin component ratio while reducing viscosity of the liquid crystal alignment agent; also provided are a liquid crystal alignment film, and liquid crystal display element. This liquid crystal alignment agent is characterized by containing at least one type of polymer selected from the group consisting of polyimide precursors and polyimides, which are the imidized products thereof, and a solvent containing a solvent A, a solvent B and a solvent C described below. Solvent A: at least one selected from the group consisting of N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, γ-butyrolactone, and dimethyl-imidazolidinone Solvent B: dipropylene glycol dimethyl ether Solvent C: a compound represented by expression (a) (R1 and R2 are independently a linear or branched alkyl group of 1