[EN] POLYMERS FOR USE AS ALIGNMENT LAYERS IN LIQUID CRYSTAL DEVICES<br/>[FR] POLYMERES DESTINES A ETRE UTILISES COMME COUCHES D'ALIGNEMENT DANS DES DISPOSITIFS A CRISTAUX LIQUIDES
申请人:ECSIBEO AB
公开号:WO2004113470A1
公开(公告)日:2004-12-29
The invention relates to a polymer for use as a surface-director alignment layer in a liquid crystal device, said polymer comprising a polymeric backbone and side-chains attached thereto, wherein the polymeric backbone lacks directly coupled ring structures, and each side-chain of at least some of the side-chains comprises at least two unsubstituted and/or substituted phenyls coupled via a coupling selected from the group consisting of a carbon-carbon single bond (-), a carbon-carbon double bond containing unit (-CH=CH-), a carbon-carbon triple bond containing unit (-C=-C-), a methylene eter unit (-CH2O-) , an ethylene eter unit (-CH2CH2O-), an ester unit (-COO-) and an azo unit (-N=N-), exhibits a permanent and/or induced dipole moment that in ordered phase provides dielectric anisotropy, and is attached to the polymeric backbone via at least two spacing atoms.