Open AccessColor-switchable liquid crystal smart window with multi-layered light guiding structures
Author(s) -
Cuiling Meng,
Enguo Chen,
Liping Wang,
Shu Tuen Tang,
Man Chun Tseng,
Jiannan Guo,
Yun Ye,
Qun Yan,
HoiSing Kwok
Publication year - 2019
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.013098
Subject(s) - liquid crystal , optics , materials science , liquid crystal display , rendering (computer graphics) , color rendering index , window (computing) , optoelectronics , color difference , computer science , light emitting diode , artificial intelligence , physics , enhanced data rates for gsm evolution , operating system
We propose here a novel multi-layered waveguide liquid crystal (LC) smart window with full color rendering based on a polymer-network liquid crystal system. The inserted position of three-primary-color LED light bars is specially designed, which is parallel to the LC alignment to obtain a higher difference between transparent and scattering states. The optimal matching of polymer-network LC system is experimentally achieved by comparing several groups of LC and reactive mesogen materials. The prepared smart window is measured and analyzed in detail including optical/chromatic test, morphology characterization, and actual application effect. The proposed architecture opens up new prospects of flexible color switchable ability and synchronized full-color display for smart windows without limitations of slow LC response time and complicated field sequential driving scheme.