LIQUID CRYSTAL ALIGNING AGENT FOR HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL DISPLAY ELEMENT, AND HOMEOTROPIC ALIGNMENT LIQUID CRYSTAL DISPLAY ELEMENT

• Main Authors: NARITA KENSHO, HIRANO YUKIO, HAGIWARA SACHIKO
• Format: Patent
• Language: English
• Published: 01.02.2007
• Subjects: 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

PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent for a homeotropic alignment liquid crystal display element, which has excellent solubility. SOLUTION: The liquid crystal aligning agent contains a polyamic acid which is obtained by making a diamine compound including a diamine with a side chain structure and a tetracarboxylic acid dianhydride compound react with each other and of which the weight average molecular weight is in a predetermined range, or a derivative thereof. COPYRIGHT: (C)2007,JPO&INPIT