Patent ID: 8398890
Filing Date: 2013-03-19
Classification: C09K,H01L,H05B

Abstract:
1. A phosphor comprising a crystal phase represented by formula [I], wherein, R represents at least one kind of a rare-earth element selected from the group consisting of La, Gd, Lu, Y and Sc, wherein La is used in an amount of at least 70 mol percent relative to the total amount of R, M represents at least one kind of a metal element selected from the group consisting of Ce, Eu, Mn, Yb, Pr and Tb, A represents at least one kind of a bivalent metal element selected from the group consisting of Ba, Sr, Ca, Mg and Zn, and x, y, z, w1 and w2 are the numeric values wherein: wherein color coordinates x and y, in CIE standard colorimetric system, of the luminescent color when excited with light having 460-nm wavelength are in the ranges of 0.420≦x≦0.600 and 0.400≦y≦0.570, respectively.