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Dopant-induced contrast enhancement of vertically aligned liquid crystal cells

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4 Author(s)
Chien-Hui Wen ; Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL, USA ; Wu, B. ; Gauza, S. ; Wu, Shin-Tson

A simple method is developed for aligning the laterally difluorinated high birefringence liquid crystal (LC) compounds and mixtures in a homeotropic cell. Adding a few percent positive dielectric anisotropic or nonpolar LC material not only enhances the contrast ratio but also improves the overall figure-of-merit. Several negative LC compounds with a wide variation of birefringence are used to investigate this phenomenon. Molecular modeling and experimentation are demonstrated to support this concept.

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Display Technology, Journal of  (Volume:1 ,  Issue: 2 )