WHITE LIGHT-EMITTING DEVICE AND LIGHTING FIXTURE

摘要

PROBLEM TO BE SOLVED: To provide a technology of reducing the usage of a fluoride complex phosphor activated with Mn4+without lowering the luminous efficiency in a white light-emitting device comprising a fluoride complex phosphor activated with Mn4+and an LED element which is an excitation source of the phosphor.

SOLUTION: The white light-emitting device comprises a blue LED element, a yellow phosphor and/or a green phosphor as a phosphor excited by the blue LED element, and a red phosphor. The red phosphor contains a fluoride complex phosphor activated with Mn4+and an alkaline-earth silicon nitride phosphor activated with Eu2+.

COPYRIGHT: (C)2012,JPO&INPIT