| 摘要 |
PROBLEM TO BE SOLVED: To overcome the problem such that a conventional white LED manufactured by coating a YAG phosphor on a light-emitting surface of a blue LED or dispersing it into a sealing resin is insufficient in brightness to be used for lighting. SOLUTION: Related to the white light-emitting element, the light emitting part of the blue LED comprising group III nitride semiconductor is provided with an oxynitride glass phosphor layer to which a luminescent center is added. As the oxynitride glass, especially, a Ca-Al-SI-O-N oxynitride glass to which Eu2+ ion is added as the luminescent center is used. |
