Tin dioxide inorganic nanolevel films with different liquid crystal molecular orientations for application in liquid crystal displays (LCDs)

Young Gu Kang, Hyungjun Kim, Hong Gyu Park, Byoung Yong Kim, Dae-Shik Seo

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We generated SnO 2 alignment films with one of two liquid crystal (LC) molecular orientations: a stable, vertical orientation or a homogeneous orientation. We changed the molecular orientations by altering the growth temperature of radio-frequency (RF) magnetron sputtering. An ion-beam (IB) advanced system was used to achieve uniform alignment. We obtained two LC molecular orientations as demonstrated by the shift of the Sn 3d peaks and the altered-sub peaks of Sn 2+, Sn 4+ intensity on X-ray photoelectron spectroscopy (XPS) images of the various films. The electro-optical (EO) characteristics of the TN-LC and VA-LC displays on the high-k SnO 2/HfO 2 double films were measured; a reduction in threshold voltage, response time, and low power consumption were observed.

Original languageEnglish
Pages (from-to)15969-15975
Number of pages7
JournalJournal of Materials Chemistry
Volume22
Issue number31
DOIs
Publication statusPublished - 2012 Aug 21

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Chemistry

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