Investigation of high Δ<i>ε</i>derivatives of the [<i>closo</i>-1-CB<sub>9</sub>H<sub>10</sub>]<sup>−</sup>anion for liquid crystal display applications
Increasing the flexoelastic ratio of liquid crystals using highly fluorinated ester-linked bimesogens
作者:Katie L. Atkinson、Stephen M. Morris、Malik M. Qasim、Flynn Castles、Damian J. Gardiner、Philip J. W. Hands、Su Seok Choi、Wook-Sung Kim、Harry J. Coles
DOI:10.1039/c2cp43535g
日期:——
are either an ether or an esterunit. It is found that increasing the number of fluorine atoms on the mesogenicunits typically leads to a small increase in e and a decrease in K, resulting in an enhancement of e/K. The most dramatic increase in e/K, however, is observed when the linking group is changed from ether to esterunits, which can largely be attributed to an increase in e. Increasing the number
LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY
申请人:CHISSO CORPORATION
公开号:EP0786508A1
公开(公告)日:1997-07-30
Liquid crystal compositions are provided which have particularly a low threshold voltage, excellent miscibility at low temperatures, and wide nematic phase range while satisfying several characteristics required of liquid crystal composition for AM-LCD.
Disclosed are liquid crystal compositions containing, as a first component, at least one compound expressed by general formula either (I-1) or (I-2), and containing, as a second component, at least one compound expressed by any one of general formulas (II-1) to (II-7)
wherein n is an integer of 1 to 10, Z1, represents -CH2CH2- or single bond, X represents F, OCF3, or CF3, and Y represents H or F.
The liquid crystal compositions of the present invention are useful as liquid crystal material for low voltage in several modes such as active matrix mode and STN mode.
Compound, liquid crystal composition and photoelectric display device thereof
申请人:Jiangsu Hecheng Display Technology Co., Ltd.
公开号:US11193063B2
公开(公告)日:2021-12-07
A compound having the structure of general formula I is useful as a liquid crystal composition and as a photoelectric display device including the liquid crystal composition. The compound having the structure of general formula I is chemically and physically stable, and has higher clearing point, and both large dielectric anisotropy and large optical anisotropy at the same time. The compound having the structure of general formula I is well compatible with other liquid crystal compounds when applied in a liquid crystal composition, the composition has good stability especially in a low-temperature environment, the characteristic of fast response and a wide range of applicabilities, especially applicable to the IPS-type and TN-TFT-type liquid crystal display devices.
具有通式 I 结构的化合物可用作液晶组合物和包括该液晶组合物的光电显示装置。具有通式 I 结构的化合物化学和物理性质稳定,具有较高的清点,同时具有较大的介电各向异性和较大的光学各向异性。具有通式 I 结构的化合物在应用于液晶组合物时与其他液晶化合物具有良好的相容性,组合物尤其在低温环境下具有良好的稳定性,具有响应速度快、适用范围广的特点,尤其适用于 IPS 型和 TN-TFT 型液晶显示设备。