Yuan Yide, Fan Fan, Zhao Chenxiang, Kwok Hoi-Sing, Schadt Martin
Opt Lett. 2020 Jul 1;45(13):3697-3700. doi: 10.1364/OL.393091.
In this work, a polarizer-free, electrically tunable liquid crystal device is presented. This device is based on randomly patterned photo-aligned boundaries generating light scattering in an adjacent liquid crystal film. Its transparent on state requires only 7.5 driving voltage. Switching from a 49.5% hazy off state into the transparent on state occurs at 1.25 V, with only 1.2% residual haze. The effect exhibits fast rise and decay times of 0.3 ms and 7.2 ms, respectively. Thanks to its field-effect nature and the surface preparation process, zero ohmic low power consumption, fast response times, and steep transmission-voltage characteristics result. Applications are smart windows, light shutters, and/or transparent displays, as well as complementary metal-oxide-semiconductor driven multiplexed displays.
在这项工作中，展示了一种无偏振器、电可调液晶器件。该器件基于随机图案化的光取向边界，在相邻液晶膜中产生光散射。其透明导通状态仅需7.5伏驱动电压。在1.25伏时，可从49.5%的模糊关态切换到透明导通态，且残余雾度仅为1.2%。该效应的上升和衰减时间分别为0.3毫秒和7.2毫秒，响应速度快。由于其场效应特性和表面制备工艺，实现了零欧姆低功耗、快速响应时间以及陡峭的透射-电压特性。其应用包括智能窗户、光快门和/或透明显示器，以及互补金属氧化物半导体驱动的多路复用显示器。
