Polymer and azo-dye composite: A photo-alignment layer for liquid crystals

  • Qi Guo
  • , A. K. Srivastava*
  • , V. G. Chigrinov
  • , H. S. Kwok
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this article, we disclose a method to fabricate polymer-stabilised azo-dye photo alignment layers for liquid crystal. The idea includes the introduction of polymer network in the alignment layer, in optimal concentration, followed by two-step irradiation. The stabilised photo-alignment layer has been explored for different aspects of the display-related parameters, viz. anchoring energy, stability for various display-related environments as a function of concentration of monomer and irradiation, residual DC and voltage holding ratio. The composite photo-alignment layer offers well-suited parameters for the liquid crystal alignment and therefore could find application in a variety of modern photonic and display devices.

Original languageEnglish
Pages (from-to)1465-1472
Number of pages8
JournalLiquid Crystals
Volume41
Issue number10
DOIs
StatePublished - 2014
Externally publishedYes

Keywords

  • Azo-dyes
  • Ferroelectric liquid crystals
  • Photo-alignment

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