LIQUID CRYSTAL DISPLAY DEVICE AND ALIGNMENT LAYER MATERIAL

摘要

PROBLEM TO BE SOLVED: To form an optical alignment layer having large anchoring strength in a liquid crystal display device of an IPS system and suppressing an AC residual image of the liquid crystal display device.

SOLUTION: A polyimide to be a rigid high polymer and a polyimide to be a soft high polymer are mixed to be used in an alignment layer material on which optical alignment treatment is performed. The material easily generates rotation of an oligomer after emission of polarizing ultraviolet thereon, and can improve a dichroic ratio of UV absorption of an alignment layer. Thus, anchoring strength of the alignment layer to a liquid crystal is strong, and an AC residual image can be suppressed.

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