Liquid crystal orientation controlling film and liquid crystal device using the same
AssigneeHitachi Chemical Company, Ltd.
InventorsHiroyoshi Sekine, Hidetaka Satou, Daisuke Makino
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Abstract
A liquid crystal display device containing a liquid crystal orientation controlling film made from a fluorine-containing polyimide-isoindoloquinazolinedione is high in a tilt angle and excellent in viewing properties.
Claims7
An orientation controlling film for liquid crystal display devices, said film being made from a fluorine-containing polyimide-isoindoloquinazolinedione prepared by dehydration and ring closure treatment of a fluorine-containing polyamide acid obtained by reacting a carboxylic acid anhydride, a diamine and a diaminomonoamide, at least one of said three reactants having one or more fluorine atoms.
A liquid crystal display device comprising a pair of substrates for holding a liquid crystal composition, electrodes provided on said substrates on the sides facing the liquid crystal composition, an orientation controlling film made from a fluorine-containing polyimideisoindoloquinazolinedione prepared by dehydration and ring closure treatment of a flourine-containing polyamide acid obtained by reacting a carboxylic acid anhydride, a diamine and a diaminomonoamide, at least one of said three reactants having one or more fluorine atoms, and the liquid crystal composition held between said pair of substrates provided with said orientation controlling films.
A composition for forming an orientation controlling film used in a liquid crystal display device comprising a fluorine-containing polyamide acid obtained by reacting a carboxylic acid anhydride, a diamine and a diaminomonoamide, at least one of the carboxylic acid anhydride, the diamine and the diaminomonoamide having one or more fluorine atoms.
Dependencies are inferred from the claim text.