Vertically aligned liquid crystal molecules on a silicon nitride film treated by ion-beam irradiation

Byoung Yong Kim, Won Kyu Lee, Young Hwan Kim, Hong Gyu Park, Byeong Yun Oh, Tae Kyu Park, Jeong Min Han, Dae-Shik Seo

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Vertical alignment (VA) of a liquid crystal display (LCD) device with a stable pretilt angle has been achieved on ion-bombarded silicon nitride (SiNx) surfaces. The surface energy variation of the SiNx surface with the bonding conversion achieved via ion beam bombardment makes it possible to control the liquid crystal (LC) pretilt angle. X-ray photoelectron spectroscopy revealed that the vertical orientation of the LC molecules occurs on the SiO2 surface and that this orientation is directionally transformed upon ion bombardment of SiNx thin films. Moreover, the upgraded electro-optical characteristics of VA-LCDs showed potential for high-performance LCD applications on modified SiNx surfaces.

Original languageEnglish
Pages (from-to)5165-5168
Number of pages4
JournalThin Solid Films
Volume519
Issue number15
DOIs
Publication statusPublished - 2011 May 31

Fingerprint

Liquid Crystals
Silicon nitride
silicon nitrides
Liquid crystals
Ion beams
Liquid crystal displays
ion beams
liquid crystals
Irradiation
Molecules
irradiation
bombardment
molecules
alignment
vertical orientation
display devices
Ion bombardment
Interfacial energy
Crystal orientation
surface energy

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Kim, Byoung Yong ; Lee, Won Kyu ; Kim, Young Hwan ; Park, Hong Gyu ; Oh, Byeong Yun ; Park, Tae Kyu ; Han, Jeong Min ; Seo, Dae-Shik. / Vertically aligned liquid crystal molecules on a silicon nitride film treated by ion-beam irradiation. In: Thin Solid Films. 2011 ; Vol. 519, No. 15. pp. 5165-5168.
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Vertically aligned liquid crystal molecules on a silicon nitride film treated by ion-beam irradiation. / Kim, Byoung Yong; Lee, Won Kyu; Kim, Young Hwan; Park, Hong Gyu; Oh, Byeong Yun; Park, Tae Kyu; Han, Jeong Min; Seo, Dae-Shik.

In: Thin Solid Films, Vol. 519, No. 15, 31.05.2011, p. 5165-5168.

Research output: Contribution to journalArticle

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AU - Kim, Byoung Yong

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AU - Kim, Young Hwan

AU - Park, Hong Gyu

AU - Oh, Byeong Yun

AU - Park, Tae Kyu

AU - Han, Jeong Min

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AB - Vertical alignment (VA) of a liquid crystal display (LCD) device with a stable pretilt angle has been achieved on ion-bombarded silicon nitride (SiNx) surfaces. The surface energy variation of the SiNx surface with the bonding conversion achieved via ion beam bombardment makes it possible to control the liquid crystal (LC) pretilt angle. X-ray photoelectron spectroscopy revealed that the vertical orientation of the LC molecules occurs on the SiO2 surface and that this orientation is directionally transformed upon ion bombardment of SiNx thin films. Moreover, the upgraded electro-optical characteristics of VA-LCDs showed potential for high-performance LCD applications on modified SiNx surfaces.

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