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Optica Publishing Group
  • Journal of Display Technology
  • Vol. 1,
  • Issue 2,
  • pp. 234-
  • (2005)

Dopant-Induced Contrast Enhancement of Vertically Aligned Liquid Crystal Cells

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Abstract

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.

© 2005 IEEE

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