| 摘要 |
TO PROVIDE A PHOSPHOR CONTAINING A COMPARATIVELY MUCH RED COMPONENT AND HAVING HIGH LIGHT EMITTING EFFICIENCY, HIGH BRIGHTNESS AND FURTHER HIGH DURABILITY, THE NITRIDE PHOSPHOR IS REPRESENTED BY THE GENERAL FORMULA LxMyN ((2/3)X+(4/3)Y): R OR LxMyOzN ((2/3)X+(4/3)Y-(2/3)Z):R (WHEREIN L IS AT LEAST ONE OR MORE SELECTED FROM THE GROUP II ELEMENTS CONSISTING OF Mg, Ca, Sr, Ba AND Zn, M IS AT LEAST ONE OR MORE SELECTED FROM THE GROUP IV ELEMENTS IN WHICH Si IS ESSENTIAL AMONG C, Si AND Ge, AND R IS AT LEAST ONE OR MORE SELECTED FROM THE RARE EARTH ELEMENTS IN WHICH Eu IS ESSENTIAL AMONG Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er AND Lu.); CONTAINS THE ANOTHER ELEMENTS. |
