液晶与显示, 2013, 28 (3): 310, 网络出版: 2013-07-16
高折射率液晶化合物与液晶混合物
High Birefringence LC Compounds and LC Mixtures
摘要
电视产业发展的必然趋势是立体视频, 而三维立体显示中, 液晶透镜技术被广泛应用。液晶透镜中使用的液晶化合物需要大的折射率各向异性和低的旋转黏度。文中新开发了一系列双炔结构的新单体, 对新单体进行了热分析与折射率各向异性数据的拟合。对在不同位置用氟取代基, 可以降低化合物的熔点, 并拉宽了向列相范围的现象进行了分析。新单体应用在液晶混合物中, 能够达到较大的折射率各向异性, 多组分可以大大降低混合物的熔点, 可以使用在液晶透镜中。不过双炔结构还存在抗紫外性能较差的问题, 需添加抗紫外剂等添加剂, 并在单体提纯工艺上还需要改进。
Abstract
Stereo display is the developing trend of television industry, and Liquid Crystal(LC) lens is a key technology of autostereoscopy display. The LC mixture was used in LC lens required high birefringence and low rotational viscosity. A series of new monomer with dialkyne structure were developed, then its phase transition temperature and birefringence data were measured. After the compounds were substituted by fluorine, lower melting point and wilder nematic phase range were observed. When the new singles were applied to LC mixture, its excellent performance could meet the requirements of LC lens. However the poor ultraviolet resistance ability of dialkyne structure need be solved, which could be improved by adding anti-UV additive and better single purification technology at present.
史子谦, 丰景义, 贵丽红, 高红茹, 乔云霞, 陈雪娇, 华瑞茂. 高折射率液晶化合物与液晶混合物[J]. 液晶与显示, 2013, 28(3): 310. SHI Zi-qian, FENG Ji-yi, GUI Li-hong, GAO Hong-ru, QIAO Yun-xia, CHEN Xue-jiao, HUA Rui-mao. High Birefringence LC Compounds and LC Mixtures[J]. Chinese Journal of Liquid Crystals and Displays, 2013, 28(3): 310.