한국전기전자재료학회:학술대회논문집 (Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference)
- 한국전기전자재료학회 2009년도 하계학술대회 논문집
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- Pages.338-338
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- 2009
이온빔처리된 고분자막을 이용한 TN 셀의 전기광학특성
Electro-optical property of twisted nematic liquid crystal cells with ion-beam irradiated polymer surface
- Kim, Dae-Hyun (Yonsei University) ;
- Ok, Chul-Ho (Yonsei University) ;
- Park, Hong-Gyu (Yonsei University) ;
- Kim, Byoung-Yong (Yonsei University) ;
- Hwang, Jeong-Yeon (Yonsei University) ;
- Seo, Dae-Shik (Yonsei University)
- 발행 : 2009.06.18
초록
To date, rubbing has been widely used to align LC molecules uniformly. Although rubbing can be simple, it has fundamental problems such as the generation of defects by dust and static electricity, and difficulty in achieving a uniform LC alignment on a large substrate. Therefore, noncontact alignment has been investigated. Ion beam induced alignment method, which provides controllability, nonstop process, and high resolution display. We investigated the high pretilt angle effects on electro-optical properties of ion beam (IB)-irradiated liquid crystal cells. on a blended polymer surface. High pretilt angle of liquid crystals IB-irradiated on a blended polymer surface including such as 5% and 10% of homeotropic polymer contents can' be achieved. The threshold voltages of IB-irradiated twisted nematic (TN) cells on a blended polymer surface decrease with increasing the pretilt angle. Also, the rising time of IB-irradiated TN cells decreases with increasing the pretilt angle. However the decay time of IB-irradiated TN cells increases with increasing the pretilt angle. Consequently, the electro-optical properties of IB-irradiated TN cells depend strongly on the pretilt angle in a blended polymer surface.
키워드