Liquid crystal alignment on inorganic film by ion beam irradiation for flexible display applications

Jeoung Yeon Hwang, Dae Shik Seo, Liang Chy Chien

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Liquid crystal alignment using ion beam (IB) irradiated a-C:H films on either plastic or glass substrates can be affected by the type of topographical structure. Strong IB irradiation induces greater roughness to the micro-groove on a plastic substrate, leading to a device with increased pretilt angle, fast response time and reduced threshold voltage. In contrast to the hysteresis in the transmittance-voltage curve of the rubbed polyimide film, which rapidly increases with increasing thermal and UV stress time, study of the residual DC voltage revealed no hysteresis on an a-C:H film due either to thermal or UV stress.

Original languageEnglish
Pages (from-to)877-883
Number of pages7
JournalLiquid Crystals
Volume38
Issue number7
DOIs
Publication statusPublished - 2011 Jul 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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