Jiang Jinghua, McGraw Greg, Ma Ruiqing, Brown Julie, Yang Deng-Ke
Opt Express. 2017 Feb 20;25(4):3327-3335. doi: 10.1364/OE.25.003327.
We developed a novel light enhancing film for an organic light emitting diode (OLED) based on polymer dispersed liquid crystal (PDLC). In the film, the liquid crystal droplets are unidirectionally aligned along the film normal direction and exhibit selective scattering. The film scatters light emitted only in directions with large incident angles but not light emitted in directions with small incident angles. When the light is scattered, it changes propagation direction and exits the OLED. The PDLC film reduces the total internal reflection and thus can significantly increase the light efficiency of the OLED.
我们基于聚合物分散液晶（PDLC）开发了一种用于有机发光二极管（OLED）的新型光增强膜。在该膜中，液晶滴沿膜的法线方向单向排列并呈现选择性散射。该膜仅散射在大入射角方向发射的光，而不散射在小入射角方向发射的光。当光被散射时，它改变传播方向并从OLED中射出。PDLC膜减少了全内反射，因此可以显著提高OLED的光效率。
