C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
117/196
C09K 19/38 (2006.01) G02F 1/1337 (2006.01)
Patent
CA 2000210
ABSTRACT OF THE DISCLOSURE A liquid crystal device containing an orientation film is disclosed, the orientation film being obtained by building up at least one mixed monomolecular film on a substrate having thereon an electrode layer, said mixed monomolecular film being obtained by spreading a mixture of (a) an amphiphilic high-molecular weight substance having a number average molecular weight of from 2,000 to 300,000 and containing a repeating unit represented by formula (I): Image (I) wherein at least one of R1 and R2 represents a group characterized by benzenoid unsaturation having at least 6 carbon atoms; and R3, R4, R5, and R6, which may be the same or different, each represents a hydrogen atom, a substituted or unsubstituted monovalent aliphatic group having from 1 to 30 carbon atoms, a substituted or unsubstituted monovalent composed of an alicyclic group and an aliphatic group having up to 30 carbon atoms in total, or a substituted or unsubstituted monovalent group composed of an aromatic group and an aliphatic group having up to 30 carbon atoms in total, the substituent being selected from a halogen atom, a nitro group, an amino group, a cyano group, a methoxy group, and an acetoxy group; at least one of R3, R4, R5, and R6 is a group other than those having from 1 to 11 carbon atoms or a hydrogen atom, (b) an amphiphilic high-molecular weight substance having a number average molecular weight of from 2,000 to 300,000 and containing a repeating unit represented by formula (II): Image (III) wherein R1, R2, R3, and R4 are as defined above, at least one of R3 and R4 being a group other than those having from 1 to 11 carbon atoms or a hydrogen atom, and (c) at least one low- molecular weight substance, the (a)/(b)/(c) mixing ratio being arbitrary, on a water surface, and subjecting the film to a heat treatment to cause cyclization. The liquid crystal device exhibits uniform and defect-free orientation of the liquid crystal. The liquid crystal orientation film can be obtained at low cost with high mass-productivity.
Murata Makoto
Uekita Masakazu
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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