Liquid crystal aligning agent, liquid crystal aligning...

Stock material or miscellaneous articles – Liquid crystal optical display having layer of specified... – Alignment layer of specified composition

Reexamination Certificate

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Details

C428S001250, C428S001260, C428S473500, C528S170000, C528S188000, C528S353000, C349S135000, C522S170000

Reexamination Certificate

active

07105211

ABSTRACT:
A liquid crystal alignment treating agent for optical alignment treatment, whereby it is possible to obtain a liquid crystal alignment film which presents a high and stable tilt angle of liquid crystal and which is excellent in an accumulated charge property by a DC voltage, is provided.A liquid crystal alignment treating agent which comprises, as resin components, a polyimide precursor or a polyimide obtained by cyclodehydration of the polyimide precursor, and an acryl polymer having repeating units represented by the formula (II):(wherein R3represents a hydrogen atom, a methyl group or a halogen atom, R4represents an alkyl group having at least 8 carbon atoms, and k represents a positive represented by the formula (III):(wherein R3and R5each independently represents a hydrogen atom, a methyl group or a halogen atom, R4represents an alkyl group having at least 8 carbon atoms, R6represents an organic group having an epoxy group, and k and j each represents a positive integer), wherein the acryl polymer having the repeating units represented by the formula (II) or the formula (III) is from 0.01 to 30 wt % based on the whole resin components.

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