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

Young Gu Kang, Hyung Jun Kim, Hong Gyu Park, Byoung Yong Kim, Dae Shik Seo

Research output: Contribution to journalArticlepeer-review

40 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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