Full-Color Fluorescent Display Devices Using a Near-UV Light-Emitting Diode

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Copyright (c) 1996 The Japan Society of Applied Physics
, , Citation Yuichi Sato Yuichi Sato et al 1996 Jpn. J. Appl. Phys. 35 L838 DOI 10.1143/JJAP.35.L838

1347-4065/35/7A/L838

Abstract

Full-color fluorescent display devices are demonstrated using a near-UV (n-UV) light-emitting diode (LED) and various fluorescent films. ZnS:Ag (blue), ZnS:Cu,Al (green) and ZnCdS:Ag (red) powdered fluors and mixtures of them are dispersed in poly-vinyl-alcohol aqueous solutions, and fluorescent films are prepared by spin coating the suspensions to glass slides. The n-UV light emitted from a blue LED with a high injection current is irradiated onto the films, and the three primary colors and white color are easily obtained.

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10.1143/JJAP.35.L838