Liquid crystal aligning agent, liquid crystal alignment film, and liquid crystal display element
AssigneeNissan Chemical Corporation
InventorTatsuya NAGI
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Abstract
The present invention relates to a polymer composition which contains (A) a photosensitive side-chain polymer that exhibits liquid crystallinity in a predetermined temperature range and has a repeating unit comprising a vertically aligning group, and (B) an organic solvent. The present invention provides: a liquid crystal alignment film which has excellent tilt angle characteristics, while being provided with alignment controllability with high efficiency; a polymer composition which enables the achievement of this liquid crystal alignment film; a twisted nematic liquid crystal display element; and a vertical field switching mode liquid crystal display element.
Claims7
1-5. (canceled)
A method for producing a substrate including a liquid crystal alignment film having an alignment control ability, wherein the liquid crystal alignment film is obtained by a method comprising:
- [I] a step of applying the polymer composition comprising
- (A) a side chain polymer which is a photosensitive side chain polymer exhibiting liquid crystallinity in a predetermined temperature range and has a repeating unit containing comprising a vertically alignable group;
- and
- (B) an organic solvent, onto a substrate having an electrode for driving a liquid crystal to form a coating film;
- [II] a step of irradiating the coating film obtained in [I] with polarized ultraviolet light in an oblique direction;
- and
- [III] a step of heating the coating film obtained in [II].
A side chain type polymer which is a photosensitive side chain type polymer exhibiting liquid crystallinity in a predetermined temperature range and has a repeating unit containing a vertically alignable group.
Dependencies are inferred from the claim text.