Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal

Hyun Jae Na, Jin Woo Lee, Won Kyu Lee, Ji Hun Lim, Hong Gyu Park, Byoung Yong Kim, Jeong Yeon Hwang, Jeong Min Han, Dae Shik Seo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We introduce the characteristics of the titanium dioxide (TiO2) inorganic film deposited by rf magnetron sputtering for liquid crystal display applications. The TiO2 films demonstrated vertical alignment (VA) of the liquid crystals (LCs) obtained by using ion-beam (IB) bombardment. As observed by using x-ray photo- electron spectroscopy, the chemical structure of the TiO2 was changed by IB bombardment, altering the Ti-O bonding of the Ti 2p spectra to lower intensity levels. Breaking Ti-O bonding by IB bombardment created pretilt angles between the TiO2 film and LC molecules. The better voltage-transmittance characteristics of the VA LCDs based on TiO2 film were measured and compared with the same characteristics of polyimide film.

Original languageEnglish
Pages (from-to)1151-1153
Number of pages3
JournalOptics Letters
Volume35
Issue number8
DOIs
Publication statusPublished - 2010 Apr 15

Fingerprint

titanium oxides
bombardment
ion beams
liquid crystals
alignment
polyimides
x ray spectroscopy
transmittance
magnetron sputtering
photoelectron spectroscopy
electric potential
molecules

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

Na, Hyun Jae ; Lee, Jin Woo ; Lee, Won Kyu ; Lim, Ji Hun ; Park, Hong Gyu ; Kim, Byoung Yong ; Hwang, Jeong Yeon ; Han, Jeong Min ; Seo, Dae Shik. / Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal. In: Optics Letters. 2010 ; Vol. 35, No. 8. pp. 1151-1153.
@article{9e349b4e3cd043deab9a356b4d9f3bd9,
title = "Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal",
abstract = "We introduce the characteristics of the titanium dioxide (TiO2) inorganic film deposited by rf magnetron sputtering for liquid crystal display applications. The TiO2 films demonstrated vertical alignment (VA) of the liquid crystals (LCs) obtained by using ion-beam (IB) bombardment. As observed by using x-ray photo- electron spectroscopy, the chemical structure of the TiO2 was changed by IB bombardment, altering the Ti-O bonding of the Ti 2p spectra to lower intensity levels. Breaking Ti-O bonding by IB bombardment created pretilt angles between the TiO2 film and LC molecules. The better voltage-transmittance characteristics of the VA LCDs based on TiO2 film were measured and compared with the same characteristics of polyimide film.",
author = "Na, {Hyun Jae} and Lee, {Jin Woo} and Lee, {Won Kyu} and Lim, {Ji Hun} and Park, {Hong Gyu} and Kim, {Byoung Yong} and Hwang, {Jeong Yeon} and Han, {Jeong Min} and Seo, {Dae Shik}",
year = "2010",
month = "4",
day = "15",
doi = "10.1364/OL.35.001151",
language = "English",
volume = "35",
pages = "1151--1153",
journal = "Optics Letters",
issn = "0146-9592",
publisher = "The Optical Society",
number = "8",

}

Na, HJ, Lee, JW, Lee, WK, Lim, JH, Park, HG, Kim, BY, Hwang, JY, Han, JM & Seo, DS 2010, 'Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal', Optics Letters, vol. 35, no. 8, pp. 1151-1153. https://doi.org/10.1364/OL.35.001151

Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal. / Na, Hyun Jae; Lee, Jin Woo; Lee, Won Kyu; Lim, Ji Hun; Park, Hong Gyu; Kim, Byoung Yong; Hwang, Jeong Yeon; Han, Jeong Min; Seo, Dae Shik.

In: Optics Letters, Vol. 35, No. 8, 15.04.2010, p. 1151-1153.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Titanium dioxide surface modification via ion-beam bombardment for vertical alignment of nematic liquid crystal

AU - Na, Hyun Jae

AU - Lee, Jin Woo

AU - Lee, Won Kyu

AU - Lim, Ji Hun

AU - Park, Hong Gyu

AU - Kim, Byoung Yong

AU - Hwang, Jeong Yeon

AU - Han, Jeong Min

AU - Seo, Dae Shik

PY - 2010/4/15

Y1 - 2010/4/15

N2 - We introduce the characteristics of the titanium dioxide (TiO2) inorganic film deposited by rf magnetron sputtering for liquid crystal display applications. The TiO2 films demonstrated vertical alignment (VA) of the liquid crystals (LCs) obtained by using ion-beam (IB) bombardment. As observed by using x-ray photo- electron spectroscopy, the chemical structure of the TiO2 was changed by IB bombardment, altering the Ti-O bonding of the Ti 2p spectra to lower intensity levels. Breaking Ti-O bonding by IB bombardment created pretilt angles between the TiO2 film and LC molecules. The better voltage-transmittance characteristics of the VA LCDs based on TiO2 film were measured and compared with the same characteristics of polyimide film.

AB - We introduce the characteristics of the titanium dioxide (TiO2) inorganic film deposited by rf magnetron sputtering for liquid crystal display applications. The TiO2 films demonstrated vertical alignment (VA) of the liquid crystals (LCs) obtained by using ion-beam (IB) bombardment. As observed by using x-ray photo- electron spectroscopy, the chemical structure of the TiO2 was changed by IB bombardment, altering the Ti-O bonding of the Ti 2p spectra to lower intensity levels. Breaking Ti-O bonding by IB bombardment created pretilt angles between the TiO2 film and LC molecules. The better voltage-transmittance characteristics of the VA LCDs based on TiO2 film were measured and compared with the same characteristics of polyimide film.

UR - http://www.scopus.com/inward/record.url?scp=77954929381&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954929381&partnerID=8YFLogxK

U2 - 10.1364/OL.35.001151

DO - 10.1364/OL.35.001151

M3 - Article

C2 - 20410949

AN - SCOPUS:77954929381

VL - 35

SP - 1151

EP - 1153

JO - Optics Letters

JF - Optics Letters

SN - 0146-9592

IS - 8

ER -