Kim Jang-Kyum, Joo Suk-Hwan, Song Jang-Kun
School of Electronic & Electrical Engineering, Sungkyunkwan University, Suwon 440-746, South Korea.
Opt Express. 2013 Mar 11;21(5):6243-8. doi: 10.1364/OE.21.006243.
The combination of photoluminescence (PL) and cholesteric liquid crystal (CLC) provides interesting complementary features for an optimized display application. Distortion of the Bragg lattice of CLCs decreases selective reflection but increases fluorescence intensity; recovery of a uniform lattice in turn results in increased reflection and decreased fluorescence. This complementary relationship between the fluorescence and the Bragg reflection gives rise to self-compensations for color shifts due to either dynamic slow response of CLC helix or mismatch of oblique incidence of light with respect to the helical axis. These color shifts have long been intrinsic unsolved limitations of conventional CLC devices. Thus, the complementary coupling between the fluorescence and the CLC Bragg reflections plays an important role in improving the color performance and the quality of moving images.
光致发光（PL）与胆甾相液晶（CLC）的结合为优化显示应用提供了有趣的互补特性。CLC布拉格晶格的畸变会降低选择性反射，但会增加荧光强度；均匀晶格的恢复则会导致反射增加和荧光降低。荧光与布拉格反射之间的这种互补关系会因CLC螺旋的动态慢响应或光相对于螺旋轴的斜入射不匹配而产生颜色偏移的自补偿。这些颜色偏移长期以来一直是传统CLC器件固有的未解决限制。因此，荧光与CLC布拉格反射之间的互补耦合在改善颜色性能和运动图像质量方面起着重要作用。
