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

Research output: Contribution to journalArticle

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 Jul 9

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liquid crystals
crystal structure
ion beams
optical properties
spectroscopic analysis
transmittance
photoelectrons
alignment
irradiation
polymers
curves
x rays

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Lim, Ji Hun ; Oh, Byeong Yun ; Kim, Byoung Yong ; Kim, Young Hwan ; Lee, Kang Min ; Han, Jeoung Min ; Lee, Sang Keuk ; Seo, Dae Shik. / Study of a liquid crystal structure with improved electro-optical characteristics. In: Journal of Applied Physics. 2009 ; Vol. 105, No. 1.
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Study of a liquid crystal structure with improved electro-optical characteristics. / Lim, Ji Hun; Oh, Byeong Yun; Kim, Byoung Yong; Kim, Young Hwan; Lee, Kang Min; Han, Jeoung Min; Lee, Sang Keuk; Seo, Dae Shik.

In: Journal of Applied Physics, Vol. 105, No. 1, 014504, 09.07.2009.

Research output: Contribution to journalArticle

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