Compositions – Liquid crystal compositions
Patent
1994-10-31
1998-02-24
Wu, Shean C.
Compositions
Liquid crystal compositions
25229961, 25229962, 25229963, 25229964, 25219965, 25219966, 359103, 359104, C09K 1952, G02F 113
Patent
active
057208980
ABSTRACT:
A liquid crystal composition, comprising a main chain-type mesomorphic polymer and a mesomorphic monomer and showing a smectic phase including a plurality of molecular layers, wherein a linkage of a covalent bond is present between adjacent molecular layers among the plurality molecular layers. Because of the presence of the covalent bond linkage between the molecular layers, the elastic energy of the liquid crystal per se relating to the elastic energy between the smectic liquid crystal molecular layers can be controlled to provide a uniform alignment. The mesomorphic polymer preferably has a structure represented by the following formula (1): ##STR1## wherein A denotes a terminal flexible chain group, M denotes a mesogen group, F denotes a spacer flexible chain group, x is 0 or 1, B denotes an ester bond group, ether bond group, thioester bond group, dimethylsiloxane bond group or thioether bond group, and y is 1-200.
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Katagiri Kazuharu
Kumano Yuuta
Nohira Hiroyuki
Shinjo Kenji
Yoshinaga Kazuo
Canon Kabushiki Kaisha
Nohira Hiroyuki
Wu Shean C.
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