Optimisation of alignment materials for minimising residual retardation in in-plane switching liquid crystal display

Lee Tae Rim, Jin Ho Kim, Myung Chul Jun, Seung Hee Lee, Hong Koo Baik

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The light leakage in a black state of in-plane switching (IPS) liquid crystal display (LCD) associated with rubbing process has been investigated. The mechanical rubbing process with a cloth caused orientation disorders in the liquid crystal directors and these partial orientation disorders result in residual retardations of the IPS LCD, causing the light leakages at the black state. In this study, we theoretically estimated how the light leakage is associated with the rubbing uniformity using 2 × 2 Jones matrix equation and also experimentally confirmed how it is associated with structural properties of the alignment layer. The light leakage was clearly reduced in the alignment layer with reduced crystallinity and flexibility.

Original languageEnglish
Pages (from-to)500-509
Number of pages10
JournalLiquid Crystals
Volume44
Issue number3
DOIs
Publication statusPublished - 2017 Feb 19

All Science Journal Classification (ASJC) codes

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

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