Fluoro-isothiocyanated liquid crystal materials with high dielectric anisotropy and voltage holding ratio

被引：16

作者：

Huh, IK ^{[1
]}

Kim, YB ^{[1
]}

机构：

[1] Konkuk Univ, Coll Sci, Dept Chem, Liquid Crystal Res Ctr,Kwangjin Ku, Seoul 143701, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2002年 / 41卷 / 11A期

关键词：

liquid crystal; liquid crystal display; voltage holding ratio; dipole moment; Huckel charge;

D O I：

10.1143/JJAP.41.6466

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

As liquid crystal (LC) materials for TFT-TN display, two-ring and three-ring homologues with 2-fluoroisothiocyanatophenyl and 2,6-difluoroisothiocyanatophenyl with high dielectric anisotropy and birefringence are prepared. In spite of the existence of a high polar -NCS group, the voltage holding ratio (VHR) of NLC mixtures contained in them is sufficiently high for application of active matrix addressing. In this paper, we will explain the voltage holding property of three types of liquid crystal materials included the terminal -NCS group considering their molecular parameters such as the Huckel charge, polarizability and dipole moment and the temperature and frequency dependence of voltage holding ratios are examined.

引用

页码：6466 / 6470

页数：5

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