一类高双折射率高可靠性液晶的合成和性能应用研究

发布时间：2018-10-24 18:43

【摘要】：随着液晶显示器件向低盒厚,轻薄化,高可靠性方向发展的需求,设计开发具有高双折射率、高介电各项异性、高清亮点、高可靠性的单体液晶顺应了发展的趋势。四联苯类液晶可以用于提升液晶的使用温度范围、提高液晶的折射率,并显著提高液晶的可靠性,是近年来混合液晶设计常用的一类单体材料。本文设计、合成、评测了一类末端四氟的四联苯液晶单体,并且考察了在液晶组合物中的应用,相对于常见单体,该系列单体的折射率大于0.3,介电大于20,清亮点高于200℃,同时使紫外后电阻率提升68%~107%,并改善VHR的表现,通过气质联用、核磁氢谱、差热分析等分析方法对结构进行了表征,并对性能参数与液晶分子结构之间的关系进行了初步分析探讨。
[Abstract]:With the development of liquid crystal display devices in the direction of low cell thickness, thinning and high reliability, the design and development of monomeric liquid crystal with high birefringence, high dielectric heterogeneity, high definition bright spot and high reliability conform to the development trend. Tetrabiphenyl liquid crystal can be used to raise the temperature range of liquid crystal, increase the refractive index of liquid crystal, and improve the reliability of liquid crystal. It is a kind of monomeric material commonly used in the design of mixed liquid crystal in recent years. In this paper, we design, synthesize and evaluate a class of tetrafluorinated tetraphenyl liquid crystal monomers, and investigate their application in liquid crystal compositions. Compared with common monomers, the refractive index of the monomers is greater than 0.3, the dielectric is greater than 20, and the bright spots are higher than 200 鈩，

本文编号：2292233