Study of a liquid crystal structure with improved electro-optical characteristics

Ji Hun Lim, Byeong Yun Oh, Byoung Yong Kim, Young Hwan Kim, Kang Min Lee, Jeoung Min Han, Sang Keuk Lee, Dae Shik Seo

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9 Citations (Scopus)

Abstract

This paper introduces the vertically aligned twisted nematic in-plane switching (VPS) structure, and compares the electro-optical (EO) characteristics of VPS liquid crystal displays (LCDs) and in-plane switching (IPS) LCDs. Various VPS-LCD pretilt angles were induced, and ion beam (IB) irradiation was used to enhance the EO properties. An x-ray photoelectron spectroscopic analysis of the IB-irradiated polymer surface confirmed that the intensity of C=O bonding as a function of exposure time traced the pretilt angles. The pretilt angle effect on optical properties was first analyzed in the experimental results. While multidomain vertical alignment LCDs and IPS-LCDs only resolve one difficulty, the VPS-LCDs described here overcome several viewing angle and transmittance curve problems.

Original languageEnglish
Article number014504
JournalJournal of Applied Physics
Volume105
Issue number1
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Lim, J. H., Oh, B. Y., Kim, B. Y., Kim, Y. H., Lee, K. M., Han, J. M., Lee, S. K., & Seo, D. S. (2009). Study of a liquid crystal structure with improved electro-optical characteristics. Journal of Applied Physics, 105(1), [014504]. https://doi.org/10.1063/1.3013434