Optical active compound, process for producing same and liquid crystal
申请人:Canon Kabushiki Kaisha
公开号:US04917817A1
公开(公告)日:1990-04-17
An optically active functional compound represented by the following formula (1) is disclosed: ##STR1## wherein R denotes an alkyl group having 1-14 carbon atoms; -X- denotes ##STR2## denotes a single bond, ##STR3## n=0, 1 or 2; and C* denotes an asymmetric carbon atom. The compound of the formula (1) may be produced through an optically active compound of the following formula (2) or (3): ##STR4## The compounds of the above formulas (1)-(3) are all characterized by a trifluoromethyl group providing a large spontaneous polarization attached to an asymmetric carbon atom.
Optically active compound, process for producing same and liquid crystal
申请人:Canon Kabushiki Kaisha
公开号:US05126071A1
公开(公告)日:1992-06-30
An optically active functional compound represented by the following formula (1) is disclosed: ##STR1## wherein R denotes an alkyl group having 1-14 carbon atoms; --X-- denotes ##STR2## Y denotes a single bond, ##STR3## or --O--; n=0, 1 or 2; and C* denotes an asymmetric carbon atom. The compound of the formula (1) may be produced through an optically active compound of the following formula (2) or (3): ##STR4## The compounds of the above formulas (1)-(3) are all characterized by a trifluoromethyl group providing a large spontaneous polarization attached to an asymmetric carbon atom.
Optically active compound, liquid crystal composition, liquid crystal device, display apparatus and display method
申请人:CANON KABUSHIKI KAISHA
公开号:EP0499221A1
公开(公告)日:1992-08-19
An optically active compound represented by the following formula (I):
wherein R₁ denotes an alkyl or alkoxy group having 1 - 18 carbon atoms; R₂ denotes an alkyl group having 1 - 12 carbon atoms; A denotes
X denotes
or -OCH₂-; and C* denotes an optically active asymmetric carbon atom. The optically active compound, when included as a component, provides a ferroelectric liquid crystal composition or device showing an improved electro-field response characteristic.