摘要:
in which the parameters have the meaning indicated in claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.
摘要:
The invention is to provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or is to provide a liquid crystal composition having a suitable balance regarding at least two of the characteristics; and is to provide an AM device having a short response time, a suitable pretilt, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. A solution is a liquid crystal composition containing a specific compound having a high maximum temperature and a large dielectric anisotropy as a first component and a polymerizable compound as a second component, and a liquid crystal display device including the composition.
摘要:
A liquid crystal orientation promoter including a compound represented by the following formula (I) is a material that exhibits a sufficient solubility, has a wide available concentration range, and exhibits excellent liquid crystal orientation promoting property [L 1 to L 6 represent a single bond, -O-, -CO-, -COO- and the like; Sp represents a single bond or an alkylene group having 1 to 10 carbon atoms; A 1 and A 2 represent a divalent aromatic hydrocarbon group or a heterocyclic group; T represents the following linking group or the like; Hb represents an alkyl fluoride group having 3 to 30 carbon atoms; k, 1, m, n and p represent integers of 0 or more; and o represents an integer of 1 to 4].
Formula (I) Hb-(L 1 ) k -Sp-(L 2 -A 1 ) l -L 3 -T-L 4 -(A 2 -L 5 ) m -Sp-(L 6 ) n -Hb
摘要:
To provide a liquid crystal composition having at least one or at least two suitable balance in characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, and to provide an AM device having a short response time, suitable pretilt and so forth. The liquid crystal composition has a negative dielectric anisotropy, and 4 .2 GPa · s/N or less as a ratio of rotational viscosity to an elastic constant, and contains a specific compound having a large negative dielectric anisotropy as a first component and a specific compound having a polymerizable group as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component and a specific compound having a large negative dielectric anisotropy as a fourth component, and a liquid crystal display device includes the composition.
摘要:
Die Erfindung betrifft ein flüssigkristallines Medium, welches mindestens eine Verbindung der Formel I,
worin R 1 , R 1* , Z 1 , L 1 und L 2 die in Anspruch 1 angegebenen Bedeutungen haben, enthält, sowie seine Verwendung für eine Aktivmatrix-Anzeige, insbesondere basierend auf dem VA-, PSA-, PS-VA, PALC-, FFS-, PS-FFS-, PS-IPS- oder IPS-Effekt.