Alignment film, method for fabricating the alignment film,...

Details Alignment film, method for fabricating the alignment film,... Alignment film, method for fabricating the alignment film,...

2005-01-18

2005-01-18

Chowdhury, Tarifur R. (Department: 2871)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S124000, C349S126000, C349S135000, C349S005000, C428S001100, C428S001200, C428S001260

Reexamination Certificate

active

06844905

ABSTRACT:
The invention provides an alignment film that is provided with a high alignment control force to a target molecule and less likely to cause problems to an element during the formation of the alignment film. An alignment film has a configuration in which, on a first alignment layer, a second alignment film layer that is uniform in the in-plane anisotropy more than the first alignment film thereof and aligned along surface alignment of the first alignment film. The first alignment film layer can be formed of, for instance, a polyimide film whose rubbing density is 200 or less, and the second alignment film layer can be formed by use of an ion deposition method with an acryl monomers as a deposition material. A liquid crystal device provided with the alignment film like this becomes higher in the alignment control force to a liquid crystal.

REFERENCES:
patent: 5578241 (1996-11-01), Plach et al.
patent: 5623354 (1997-04-01), Lien et al.
patent: 6001277 (1999-12-01), Ichimura et al.

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