抄録
Liquid crystal (LC) microlenses with the stacked electrode structure have large numerical aperture. In this work, we introduce an improved driving method which consists of two steps: that is, i) a large voltage is applied for a short interval, ii) then a desired voltage is applied. It is found that, in tile case of a conventional LC microlens, a reverse-tilt disclination is undesirably generated by introducing the two step driving method. This disclination stably remains in the hole-patterned area and disturbs the improvement of the response properties. On tile other hand, in the case of the LC microlens with the stacked electrode structure, such a reverse-tilt disclination is never seen and the improvement of the response property is successfully achieved by the introduced driving method.
