Liquid crystal alignment agent, liquid crystal alignment film, and liquid crystal display element using liquid crystal alignment film
To provide a liquid crystal alignment agent that makes it possible to form a liquid crystal alignment film that gives a liquid crystal display element that has favorable viewing angle characteristics and afterimage characteristics. A liquid crystal alignment agent that contains a polymer that is the...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | To provide a liquid crystal alignment agent that makes it possible to form a liquid crystal alignment film that gives a liquid crystal display element that has favorable viewing angle characteristics and afterimage characteristics. A liquid crystal alignment agent that contains a polymer that is the product of reacting starting materials that include a tetracarboxylic acid dianhydride and a diamine. The starting materials used to synthesize the polymer include at least one compound selected from compounds represented by formulas (1)-(3) and also include compounds represented by formulas (A)-(C) and at least one compound selected from compounds represented by formula (D), provided that, when m in formula (1) is 8, no compound represented by formulas (A)-(C) need be included in the diamine, and the tetracarboxylic acid dianhydride need not be a compound represented by formula (D). |
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