Orientational control of liquid crystal molecules by reformed poly(dimethylsiloxane) alignment layer via ion-beam irradiation

Hee Jun Lee, Young Hwan Kim, Jong Jin Lee, Hong Gyu Park, Seok Yang, Byoung Yong Kim, Yang Doo Lee, Byeong Kwon Ju, Dae Shik Seo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We introduce an alternative approach to making a reformed PDMS layer as a pretilt controllable alignment layer, which can be used in the vertical alignment (VA) and twisted nematic (TN) modes, by varying the ion beam (IB) energy. Depending on different the dielectric anisotropy of surfaces, PDMS layers have been demonstrated to align LC molecules homogeneously and homeotropically. The electro-optic characteristics of aligned VA and TN-LCD based on PDMS layer were comparable to those of VA and TN-LCD based on polyimide, showing good potential of PDMS film as an alignment layer.

Original languageEnglish
Pages (from-to)628-631
Number of pages4
JournalMaterials Chemistry and Physics
Volume126
Issue number3
DOIs
Publication statusPublished - 2011 Apr 15

Keywords

  • Dielectric anisotropic
  • Ion beam
  • Liquid crystal
  • Polydimethylsiloxane
  • Pretilt angle

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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