Yu Byeong-Hun, Huh Jae-Won, Kim Ki-Han, Yoon Tae-Hoon
Opt Express. 2013 Dec 2;21(24):29332-7. doi: 10.1364/OE.21.029332.
We propose a light shutter device using dichroic-dye-doped liquid crystals (LCs) whose Bragg reflection wavelength is set to be infrared by controlling the pitch of cholesteric liquid crystals (ChLCs). A dye-doped long-pitch ChLC cell is switchable between the dark planar state and the transparent homeotropic state. It has the advantages of high transmittance, low operation voltage, and an easy fabrication process relative to previous LC light shutter devices. The proposed light shutter device is expected to achieve high visibility for transparent organic light-emitting diode displays and emerging smart windows, which can be used in airplanes, cars, and other similar applications.
我们提出了一种使用掺杂二向色性染料的液晶（LC）的光闸装置，通过控制胆甾相液晶（ChLC）的螺距，将其布拉格反射波长设置为红外光。掺杂染料的长螺距ChLC盒可在暗平面态和透明垂直排列态之间切换。相对于以前的LC光闸装置，它具有高透射率、低工作电压和易于制造的优点。所提出的光闸装置有望在透明有机发光二极管显示器和新兴的智能窗户中实现高可见性，这些应用可用于飞机、汽车和其他类似应用中。
