| 摘要 |
A liquid crystal aligning agent for a liquid crystal display device is provided to improve the long period reliability of electrical characteristic due to the change of voltage holding rate according to the time. A liquid crystal aligning agent contains one or more polymers selected from a polyamic acid and its derivative and a compound having a plurality of allyl groups. The compound having a plurality of allyl groups is at lease one selected from a group of the compounds indicated as the following chemical formula (A-1) ~ (A-7). In the chemical formulae, Z^1 is independently, a single bond, -O-, -CO-, -CONH-, -NHCO-, -C(CH3)2-, -C(CF3)2-, -(CH2)t-, or -O-(CH2)t-O-; t is an integer of 1~8; Z is -CH2CH2- or 1,4- phenylene; Q^1 is a group indicated as the following chemical formula (B-1); Q^2 is a group indicated as the following chemical formula (B-2); and Q^3 is hydrogen or is a group indicated as the following chemical formula (B-3).
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