Relationship between the contact angle and the tilt angle on the vertical polymer layer of NLC using various ion beam exposure energy

Ji Hun Lim, Young Hwan Kim, Byeong Yun Oh, Byeong Yong Kim, Jeong Min Han, Jeong Yeon Hwang, Dae Shik Seo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recently, the relationship between surface energy and tilt angle on vertical polyimide (PI) was studied. The study showed that ion beam (IB) exposure using argon gas changes the surface energy of vertical PI as a function of exposure time. This characteristic induces the transition of vertical liquid crystal (LC) orientation from vertical to homogeneous. In this study, we applied the property to fabricate liquid crystal displays (LCD) with both vertical alignment (VA) and twisted nematic (TN) LCDs on vertical PI. The study revealed correlations between various IB exposure energies and surface energies with the same exposure time on vertical PI. X-ray photoelectron spectroscopic spectra were analyzed to prove the correlations and transmittance curves via applied voltage to VA, and TN LCDs were evaluated to observe the LC driving performance on IB-irradiated vertical PI.

Original languageEnglish
Title of host publicationNanostructured Thin Films II
DOIs
Publication statusPublished - 2009
EventNanostructured Thin Films II - San Diego, CA, United States
Duration: 2009 Aug 52009 Aug 6

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7404
ISSN (Print)0277-786X

Other

OtherNanostructured Thin Films II
CountryUnited States
CitySan Diego, CA
Period09/8/509/8/6

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Lim, J. H., Kim, Y. H., Oh, B. Y., Kim, B. Y., Han, J. M., Hwang, J. Y., & Seo, D. S. (2009). Relationship between the contact angle and the tilt angle on the vertical polymer layer of NLC using various ion beam exposure energy. In Nanostructured Thin Films II [74040X] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7404). https://doi.org/10.1117/12.830959