TWI816022B

A liquid crystal alignment agent is provided which can form a liquid crystal alignment film that has minimal occurrence of afterimages resulting from remaining DC, or AC afterimages, and that is easy to rework and has high transmittance.　This liquid crystal alignment agent contains a polymer (A) hav...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAHARA, SHOICHIRO, TOMOE, KOJI, SOMA, SAKI
Format:	Patent
Sprache:	chi
Schlagworte:	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 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:	A liquid crystal alignment agent is provided which can form a liquid crystal alignment film that has minimal occurrence of afterimages resulting from remaining DC, or AC afterimages, and that is easy to rework and has high transmittance.　This liquid crystal alignment agent contains a polymer (A) having the repeating unit represented by formula (1), and a polymer (B) having the repeating unit represented by formula (2), the repeating unit represented by formula (3), the repeating unit represented by formula (4), and the repeating unit represented by formula (5). (In formula (1), X1 is a tetravalent organic group, and Y1 is a divalent organic group. In formulas (2)-(5), X2 is a divalent organic group. In formulas (2)-(5), X2 is a tetravalent organic group derived from alicyclic acid dianhydride or aliphatic acid dianhydride, and Y2 is a divalent organic group represented by formula (m-1) or (m-2). R2-5 is a hydrogen atom or an alkyl group of 1-4 carbons. Z21-51, Z22-52 are each independently a hydrogen atom, et