摘要:
A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skeleton, said 6-membered ring containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition. the resulting mixture also has an enlarged mesomorphic range and in almost all cases has a reduced viscosity.
摘要:
The liquid-erystal compound of the present invention is characterized by having the following molecular structure:
(a) the molecular skeleton has two or more six-membered rings, (b) the respective six-membered rings are bonded directly to each other, (c) a carbon atom in each of the terminal six-membered rings is bonded directly to an acyclic terminal group, (d) one of the acyclic terminal groups bonded to the carbon atom of the six-membered ring is an alkyl group or an alkoxycarbonyl-free group bonding through an alkylene group, and (e) the other acyclic terminal group bonded to the carbon atom in the six-membered ring has a carbonyl group and a terminal alkoxyl group.
摘要:
The liquid crystal compound of this invention is characterized by having the general formula. wherein R and R' each represent an alkyl group, and X, X', Y and Y' each represent -
摘要:
A colorless liquid crystalline compound having at least one 6-membered ring and non-cyclic end groups in the molecular skeleton, said 6-membered ring containing two or more carbon atoms, at least one of which is directly bonded to a methylene group of a non-cyclic group having an alkoxy group at another end has a wide mesomorphic range. When said colorless liquid crystalline compound is mixed with a liquid crystal composition. the resulting mixture also has an enlarged mesomorphic range and in almost all cases has a reduced viscosity.
摘要:
There are disclosed a ferroelectric liquid crystal light-modulating device comprising a pair of base plates each provided with an electrode, at least one of which is transparent, and a light-polarizing means, said base plates being arranged with a gap therebetween to form a cell which contains a ferroelectric liquid crystal composition, which device is characterized by being such that said ferroelectric liquid crystal composition exhibits a phase sequence in which a smectic A (SA) phase is in the higher temperature side of an adjacent ferroelectric phase [smectic C* (SC*) phase] and either (a) the elastic constant (B,) in deformation of C-director in the liquid crystal layer conforms to the formula, B, > 1.0 × 10 -10 N or (b) said liquid crystal composition has a spontaneous polarization larger than 3.2 × 10 -4 C/m 2 ; and a display device using said ferroelectric liquid crystal light-modulating device.
摘要:
The element comprises a pair of transparent substrates, a pair of light-transmitting electrodes each provided on the respective substrates, a ferroelectric liquid crystal layer disposed between the pair of substrates and orientation control films for the molecules of the ferroelectric liquid crystal provided between the electrodes and the ferroelectric liquid crystal layer. The orientation control film controls a tilt angle of a biphenyle series nematic liquid crystal having biphenyl ring system below 1.5° and causes a uniform molecule orientation characteristic and a memory property for the ferroelectric liquid crystal element of smectic C * liquid crystal and having a liquid crystal layer thickness of even more than 4 µ m.