- 學位論文
改善液晶透鏡之反應時間的新穎電極結構設 計與驅動方法
Novel Design of the Electrode Structure and Its Driving Scheme to Improve Response Time of a Tunable Liquid Crystal Lens
摘要
本篇論文設計一同心圓電極液晶透鏡(Liquid Crystal Lens)之結構，並透過其 適用之驅動方法，改善其反應時間。它與傳統之液晶透鏡相比較，此新型結構之 液晶透鏡，由兩層氧化銦錫(Indium Tin Oxides, ITO)透明導電鍍膜玻璃所組成， 其兩層ITO 玻璃上之電極圖案皆設計為同心圓電極圖案。因此，它能夠通由此 新型液晶透鏡兩層四組電極之特殊設計，得到兩組電極開關之切換控制，並衍生 出三種新型液晶透鏡之驅動方法。而此新型結構之液晶透鏡，還具備了消除液晶 分子排列向錯(Disclination Line)的能力，並且可將液晶透鏡之上升時間，降低減 少至一秒以下。如此的電控應用之新型液晶透鏡，其可取代固定焦距之光學透鏡 以及傳統單孔單式電極之液晶透鏡。
並列摘要
A new method here is proposed for improving the response time of tunable liquid-crystal lens (LC lens) with the concentric-ring electrode pattern through a suitable driving scheme. Compared with conventional liquid-crystal lens, the new structure of liquid-crystal lens in this work is composed with only two ITO glasses and each of them is designed the concentric-ring pattern. Thus, one can control the orientation of liquid-crystal director via the four-terminal switch on the electrode patterns. Moreover, it exhibits abilities to eliminate the disclination line, formed by the director dismatch during driving the LC lens, and to reduce the rise time of LC lens to less than one second. It shows an application potential instead of the optical lens with fixed focus length or the conventional LC lens with single circular-hole electrode pattern.