Investigation on newly designed low resistivity polyimide-type alignment layer for reducing DC image sticking of in-plane switching liquid crystal display

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

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Soluble polyimide-type alignment layer is widely used in in-plane switching (IPS) liquid crystal display (LCD) because of its excellent reliability owing to high imidisation ratio during long-term driving, high voltage-holding ratio and low ion density. Nevertheless, it exhibits slow direct current (DC) discharging property due to its high resistivity, causing significant DC image-sticking problem. In this study, we doped inorganic salt to control the resistivity of soluble polyimide-type alignment layer and found that this approach reduced DC image sticking greatly without any loss of reliability property in IPS-LCD.

Original languageEnglish
Pages (from-to)738-747
Number of pages10
JournalLiquid Crystals
Volume44
Issue number4
DOIs
Publication statusPublished - 2017 Mar 16

All Science Journal Classification (ASJC) codes

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

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