TWI837196B

• Main Authors: KONISHI, REIKU, NAGI, TATSUYA, SUGA, TAKAHIRO
• Format: Patent
• Language: Chinese
• Published: 01.04.2024
• Subjects: 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

Provided is a liquid crystal aligning agent that: is capable of yielding a liquid crystal alignment film having good liquid crystal aligning properties; and has an increased sensitivity margin. The liquid crystal aligning agent is characterized by containing at least one polymer selected from the group consisting of: polyamic acids obtained by reacting a diamine component, containing a diamine having a structure represented by formula [1] below, with a tetracarboxylic acid dianhydride component; and polyimides obtained by imidizing said polyamic acids. (In formula [1], A1 and A2 are each independently a monocyclic group or condensed ring group optionally comprising a substituent, and A1 and A2 are not simultaneously monocyclic groups. X1 and X2 are each independently a single bond, an oxygen atom, or a sulfur atom. Q is an alkylene group comprising 1 or 2 carbon atoms. M and n are each independently integers from 1 to 3.)