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

doi:10.1016/j.tsf.2011.01.080

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

Department of Electrical and Electronic Engineering

Research output: Contribution to journal › Article › peer-review

5 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 (SiN_x) surfaces. The surface energy variation of the SiN_x 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 SiN_x thin films. Moreover, the upgraded electro-optical characteristics of VA-LCDs showed potential for high-performance LCD applications on modified SiN_x surfaces.

Original language	English
Pages (from-to)	5165-5168
Number of pages	4
Journal	Thin Solid Films
Volume	519
Issue number	15
DOIs	https://doi.org/10.1016/j.tsf.2011.01.080
Publication status	Published - 2011 May 31

All Science Journal Classification (ASJC) codes

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

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10.1016/j.tsf.2011.01.080

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

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.",

author = "Kim, {Byoung Yong} and Lee, {Won Kyu} and Kim, {Young Hwan} and Park, {Hong Gyu} and Oh, {Byeong Yun} and Park, {Tae Kyu} and Han, {Jeong Min} and Seo, {Dae Shik}",

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AU - Kim, Byoung Yong

AU - Lee, Won Kyu

AU - Kim, Young Hwan

AU - Park, Hong Gyu

AU - Oh, Byeong Yun

AU - Park, Tae Kyu

AU - Han, Jeong Min

AU - Seo, Dae Shik

PY - 2011/5/31

Y1 - 2011/5/31

N2 - 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.

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

Abstract

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