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39.3: Distinguished Student Paper : Improved Vertical Alignment of Liquid Crystals with a Large Negative Dielectric Anisotropy
Author(s) -
Chen Cheng,
Bos Philip J.,
Anderson James E.
Publication year - 2006
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2433257
Subject(s) - birefringence , liquid crystal , anisotropy , dielectric , materials science , doping , crystal (programming language) , optics , quality (philosophy) , condensed matter physics , optoelectronics , physics , computer science , quantum mechanics , programming language
Abstract Liquid crystals with a large negative dielectric anisotropy and large birefringence are desirable for vertical alignment applications. But they are difficult to align vertically on SiOx surfaces. An interesting method has been found to generate high quality vertical alignment by doping the host liquid crystal with materials that have a cyano group along their long molecular axis. Using this method we propose a way to design new liquid crystal mixtures with large dielectric anisotropy and birefringence that have improved aligning ability for applications requiring vertical alignment.