Alignment Capabilities and EO Performances of VA-LCD Using Transparent Conductive Al-doped ZnO Films

Transparent electrodes are indispensable for most of the flat panel display as liquid crystal display (LCD). We investigated liquid crystal (LC) aligning capabilities and electro-optical (EO) characteristics of transparent electrodes as Al-doped ZnO (ZnO:Al) substituting indium tin oxide (ITO). The...

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Bibliographic Details
Published in:Molecular crystals and liquid crystals (Philadelphia, Pa. : 2003) Pa. : 2003), 2007-12, Vol.475 (1), p.23-32
Main Authors: Kim, Sang-Hoon, Hwang, Jeoung-Yeon, Kim, Jong-Hwan, Kim, Young-Hwan, Kang, Dong-Hun, Lee, Sang-Keuk, Han, Jin-Woo, Ok, Chul-Ho, Seo, Dae-Shik, Kim, Eung-Sang
Format: Article
Language:English
Subjects:
ITO
NLC
polyimide
rubbing
transparent conducting oxides
vertical alignment
ZnO:Al
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Summary:Transparent electrodes are indispensable for most of the flat panel display as liquid crystal display (LCD). We investigated liquid crystal (LC) aligning capabilities and electro-optical (EO) characteristics of transparent electrodes as Al-doped ZnO (ZnO:Al) substituting indium tin oxide (ITO). The experiment results show that a uniform vertical LC alignment on ZnO:Al electrodes based on a rubbed polyimide (PI) surface were achieved. A high pretilt angle of about 88° was obtained. EO performances of the VA-LCD on rubbed PI surfaces with ZnO:Al is almost the same as that of the VA-LCD with ITO electrodes. These results appeared that ZnO:Al electrodes as transparent electrodes of LCDs could substitute ITO electrodes.
ISSN:1542-1406
1563-5287
DOI:10.1080/15421400701732514