Patent ID: 6540940
Filing Date: 2003-04-01
Classification: C09K,G02F

Abstract:
An orientation layer for aligning liquid crystal molecules provided on a substrate, wherein the orientation layer contains an acrylic copolymer or a methacrylic copolymer comprising repeating units represented by the formula (I) and repeating units represented by the formula (II) or (III): in which R1 is hydrogen or methyl; R2 is hydrogen, a halogen atom or an alkyl group having 1 to 6 carbon atoms; M is proton, an alkali metal ion or an ammonium ion; L0 is a divalent linking group selected from the group consisting of â€”Oâ€”, â€”COâ€”, â€”NHâ€”, â€”SO2â€”, an alkylene group, an alkenylene group, an arylene group and a combination thereof; R0 is a hydrocarbon group having 10 to 100 carbon atoms or a fluorine atom substituted hydrocarbon group having 1 to 100 carbon atoms; Cy is an alicyclic group, an aromatic group or a heterocyclic group; m is 10 to 99 mole %; and n is 1 to 90 mole %.