Patent ID: 7061024
Filing Date: 2006-06-13
Classification: C09K,H01L,H05B

Abstract:
1. A light emitting device comprising a light emitting structure capable of emitting primary light of a wavelength less then 480 nm and a luminescent screen comprising a phosphor of general formula (Sr 1-a-b Ca b Ba c Mg d Zn e )Si x N y O z :Eu a , wherein 0.002≦a≦0.2, 0.0≦b≦0.25, 0.0≦c≦0.25, 0.0≦d≦0.25, 0.0≦e≦0.25, 1.5≦x≦2.5, 1.5≦y≦2.5 and 1.5<z<2.5.