摘要:
A novel chiral liquid crystal compound having an optically active group which affords a superior response rate when used as a liquid crystal display element, and a liquid crystal composition containing the same are provided, which chiral liquid crystal compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 15 carbon atoms; X represents single bond, --O--, ##STR2## Y represents --CH.sub.2 O-- or --OCH.sub.2 --; Z represents single bond, --O--, ##STR3## and m and n each represent 1 or 2.
摘要:
A novel optically active liquid crystal compound and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sub.1 is alkyl or alkoxy of 4-18 C; R.sub.2 is alkyl, alkoxy, acyl or alkoxymethyl of 4-18 C; but either one of R.sub.1 or R.sub.2 is an optically active group; either one of X.sub.1 or X.sub.2 is halogen atom and the other is H; m and n each are 0 or 1 and m+n is 0 or 1.
摘要:
A novel optically active liquid crystal compound and a liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sub.1 is alkyl or alkoxy of 4-18 C; R.sub.2 is alkyl, alkoxy, acyl or alkoxymethyl of 4-18C; but either one of R.sub.1 or R.sub.2 is an optically active group; either one of X.sub.1 or X.sub.2 is halogen atom and the other is H; m and n each are 0 or 1 and m+n is 0 or 1.
摘要:
A novel liquid-crystalline, optically active compound exhibiting a chiral smectic phase and a chiral smectic liquid crystal composition containing the same are provided, which liquid-crystalline, optically active compound is a compound expressed by the formula ##STR1## wherein X represents a linear chain alkyl group or a linear chain alkoxy group, each of 4 to 18 carbon atoms, or a halogen atom, R* represents an optically active alkyl group of 4 to 18 carbon atoms and ##STR2## shows that the oxygen atom can be bonded to either nitrogen atom.
摘要:
A novel chiral liquid crystal compound having an optically active group which affords a superior response rate when used as a liquid crystal display element, and a liquid crystal composition containing the same are provided, which chiral liquid crystal compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 1 to 18 carbon atoms; R* represents an optically active alkyl group of 4 to 15 carbon atoms; X represents single bond, --O--, ##STR2## Y represents --CH.sub.2 O-- or --OCH.sub.2 --; Z represents single bond, --O--, ##STR3## and m and n each represent 1 or 2.
摘要:
A novel optically active compound suitable for use in a display mode utilizing a ferroelectric liquid crystal, and a chiral smectic liquid crystal composition containing the same are provided, which novel optically active compound is expressed by the formula ##STR1## wherein R represents an alkyl group of 2 to 15 carbon atoms; X represents CN group or a halogen atom; Y and Z each represent a halogen atom or hydrogen atom, but either one of Y and Z is hydrogen atom; l is 1 or 2; m is 0 or 1; and a symbol * shows that the carbon atom having this symbol attached thereto constitutes an optically active center.
摘要:
Novel chiral smectic liquid crystalline ester compounds having a superior stability and exhibiting a high response rate when used in the form of display elements and chiral smectic mixtures containing at least one of these compounds are provided, which compounds are expressed by the formula ##STR1## wherein n is an integer of 2 to 16; l is 0, 1 or 2; m is 1 or 2 under the condition of l+m.gtoreq.2; X represents methylene group --CH.sub.2 -- or single bond when l is zero, methylene group --CH.sub.2 -- or ether linkage --O-- when l=1 or ether linkage --O-- when l=2; and Y represents R, OR, --COR, --OCOR, --OCOOR or --COOR wherein R throughout represents an alkyl group of 1 to 18 carbon atoms; and asterisk * shows an optically active carbon atom.
摘要:
An optically active liquid crystal compound having a large spontaneous polarization value and a chiral smectic liquid crystal composition containing the same are provided, which compound is expressed by the formula ##STR1## wherein R.sup.1 and R.sup.2 each represent an alkyl group of 4 to 18 carbon atoms and l represents 1 or 0.
摘要:
Chiral smectic compounds having a high response rate and being superior as a ferroelectric liquid crystalline material, and chiral smectic mixtures containing the same are provided, which compounds being expressed by the formula ##STR1## wherein X represents --CH.sub.2 --, --O-- or --CO--; n represents 0, 1 or 2; when X represents --CH.sub.2 --, Y represents R--, R--CO--, ROCO--, ##STR2## wherein R represents an alkyl group having 1 to 18 carbon atoms, and when X represents --O-- or --CO--, Y represents R; and * represents a symbol indicating an optically active carbon atom.
摘要:
Chiral smectic compounds having a high response rate and being superior as a ferroelectric liquid crystalline material, and chiral smectic mixtures containing the same are provided, which compounds being expressed by the formula ##STR1## wherein X represents --CH.sub.2 --, --O-- or --CO--; n represents 0, 1 or 2; when X represents --CH.sub.2 --, Y represents R--, R--CO--, ROCO--, ##STR2## wherein R represents an alkyl group having 1 to 18 carbon atoms, and when X represents --O-- or --CO--, Y represents R; and * represents a symbol indicating an optically active carbon atom.