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

被引：7
作者：
Na, Hyun-Jae [1 ]
Lee, Jin-Woo [2 ]
Lee, Won-Kyu [1 ]
Lim, Ji-Hun [1 ]
Kim, Byoung-Yong [1 ]
Hwang, Jeong-Yeon [1 ]
Han, Jeong-Min [3 ]
Seo, Dae-Shik [1 ]
机构：
[1] Yonsei Univ, Informat Display Device Lab, Dept Elect & Elect Engn, Seoul 120749, South Korea
[2] Korea Univ, Dept Elect Engn, Seoul 136701, South Korea
[3] Seoil Univ, Dept Elect, Seoul 131702, South Korea
来源：
OPTICS LETTERS | 2010年 / 35卷 / 08期
关键词：
IRRADIATION; POLYIMIDE; DISPLAY; FILMS;
D O I：
10.1364/OL.35.001151
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce the characteristics of the titanium dioxide (TiO(2)) inorganic film deposited by rf magnetron sputtering for liquid crystal display applications. The TiO(2) films demonstrated vertical alignment (VA) of the liquid crystals (LCs) obtained by using ion-beam (IB) bombardment. As observed by using x-ray photoelectron 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 TiO(2) film and LC molecules. The better voltage-transmittance characteristics of the VA LCDs based on TiO(2) film were measured and compared with the same characteristics of polyimide film. (C) 2010 Optical Society of America
引用
收藏
页码：1151 / 1153
页数：3
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