Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2004.04a
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- Pages.9-12
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- 2004
Study for thermal stability of Liquid Crystal Device
액정 소자의 열적 안전성에 관한 연구
- Lee, Sang-Keuk (KwangWoon Uni.) ;
- Hwang, Jeoung-Yeon (YonSei Uni.) ;
- Seo, Dae-Shik (YonSei Uni.) ;
- Lee, Joon-Ung (KwangWoon Uni.)
- Published : 2004.04.30
Abstract
In this study, we investigated about electrooptics characteristic of three kind of TN cell on the polyimide surface. Monodomain alignments of thermal stressed TN cell over temperature of liquid crystal isotropic phase were almost same that of no thermal stressed TN cells. However, the thermal stressed TN cell have many defects. Also, threshold voltage and response time of thermal stressed TN cells show same performances of no thermal stressed TN cells. There were little changes of value in these TN cells. However, transmittances of TN cells on the polyimide surface decrease with increasing thermal stress time. Finally, the residual DC voltage of the thermal stressed TN cell on the polyimide surface show decrease of characteristics as increasing thermal stress time. Therefore, thermal stability of TN cell was decreased by high thermal stress for the long times.