![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
Multicolor fluorescent liquid crystal (LC) displays using a newly developed UV light emitting diode (UV-LED) as an excitation source are proposed. The fluorescent LC cells are prepared by mixing a cholesteric LC and a blue or green dichroic guest fluorescent dye. A green or red fluorescent film is stacked on the LC cell. The LC cells work as both a UV shutter and a fluorescent emitter, therefore the fluorescence color can be electrically switched between two fluorescent layers. The multicolor fluorescence switch is also demonstrated in the triple-layered cell; two LC layers (blue and green) and one fluorescent film (red).