| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal aligning agent that exhibits good liquid crystal aligning property, when applied to not only a TN (twisted nematic) and STN (super-twisted nematic) type but a vertical alignment liquid crystal display element and gives a liquid crystal alignment layer excellent in a voltage retention rate and image retention characteristics. SOLUTION: The liquid crystal aligning agent contains at least one kind of polymer selected from among a group consisting of polyamic acids and their imidized polymers that are obtained by making tetracarboxylic acid dianhydride containing 1,2,3,4-cyclobutane tetracarboxylic acid dianhydride and pyromellitic acid dianhydride react with a diamine containing a compound, expressed by formula (1) and a specified compound represented by 3,5-diaminnobenzoic acid hexadecyl. COPYRIGHT: (C)2009,JPO&INPIT
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