Liquid crystal alignment effects and electro optical performances of twisted nematic-liquid crystal display using ion-beam alignment method on nitrogen-doped diamond like carbon thin film layer

Chang Joon Park, Jeoung Yeon Hwano, Hyung Ku Kang, Dae Shik Seo, Han Jin Ahn, Jong Bok Kim, Kyung Chan Kim, Hong Koo Baik

Research output: Contribution to journalArticle

13 Citations (Scopus)


Nitrogen-doped diamond-like carbon (NDLC) thin films exhibit a high electrical resistivity that is similar to the properties shown by diamond-like carbon (DLC) thin films. The diamond-like transport property in NDLC thin films comes from a material consisting of sp2-bonded carbon versus the sp3-bonded carbon of DLC. In addition, NDLC thin films have a better thermal stability than the DLC thin films, because C:N bonding in the NDLC thin films is stronger against thermal stress than C:H bonding in the DLC thin films. The liquid crystal (LC) alignment effects of ion beam irradiation on the NDLC thin films and the electro optical (EO) performances of the ion-beam-aligned twisted nematic (TN)-liquid crystal display (LCD) with oblique ion beam exposure on an NDLC thin film surface were studied. A good uniform nematic liquid crystal (NLC) alignment with ion beam exposure on the NDLC thin films was observed. In addition, good EO properties, a residual DC property and particularly the good thermal stability of the ion-beam-aligned TN-LCD on NDLC thin films was achieved.

Original languageEnglish
Pages (from-to)1352-1355
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number3
Publication statusPublished - 2005 Mar 1


All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this