Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Phosphor, method for producing phosphor, phosphor-containing composition, light-emitting device, lighting system and image display device
A phosphor includes a crystal phase of a formula (Ln,Ca,Ce)3+αSi6N11. In this formula, α is from −0.1 to 1.5, inclusive. When an object color of the phosphor is expressed by the L*a*b* color system, the value of (a*2+b*2)1/2 satisfies 71≦(a*2+b*2)1/2. Also in the formula, Ln is La, Gd, Lu, Y, Sc, or any combination of these. When the phosphor is excited with light having a wavelength of 455 nm, it emits a color wherein x is from 0.400 to 0.570 inclusive, and y is from 0.420 to 0.590, inclusive, as expressed in the CIE standard coordinate system.
Mitsubishi Chemical Corporation
C H C C C C C H C C C C C C C H H C C H C C C C C H C C C C C C C C C C
C04B H01L C04B C04B C09K C04B C04B H05B C04B C04B C04B C09K C04B C04B C04B H01L H01L C04B C04B H01L C09K C04B C09K C04B C04B H01L C04B C04B C04B C04B C04B C09K C04B C04B C04B C04B
inventional additional additional additional inventional additional additional inventional additional additional inventional inventional inventional additional additional additional additional additional inventional additional inventional inventional inventional additional additional additional additional inventional additional additional additional inventional inventional additional additional inventional
Takatoshi Naoto Keiichi Tatsuya Hiroyasu Ryuji
Seto Kijima Seki Inoue Yamada Adachi