Nematic liquid crystal composition and application thereof in liquid crystal display device

• Main Authors: WANG JIE, CHEN MAOXIAN, CHEN HAIGUANG, CHU SHIHONG, JIANG TIANMENG
• Format: Patent
• Language: Chinese; English
• Published: 22.07.2022
• Subjects: ADHESIVES; CHEMISTRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DYES; FREQUENCY-CHANGING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PAINTS; PHYSICS; POLISHES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The invention relates to a nematic liquid crystal composition and a preparation method thereof, and the nematic liquid crystal composition is prepared by adopting a compound shown as a general formula I, a compound shown as a general formula II, a compound shown as a general formula III, a compound shown as a general formula IV, a compound shown as a general formula V, a compound shown as a general formula VI and a compound shown as a general formula VII as raw materials and properly proportioning. The finally prepared liquid crystal composition simultaneously contains polycyclic, cyano and ester compounds, has the characteristics of wide enough temperature range and high response speed, also has the characteristics of high clearing point and large optical anisotropy, and can adapt to low-temperature environment conditions. The nematic liquid crystal composition can be suitable for various display devices, and is especially suitable for PDLC devices. 本发明涉及一种向列型液晶组合物及其制备方法，所述的液晶组合物通过采用通式为Ⅰ的化合物、通式为Ⅱ的化合物、通式为Ⅲ的化合