Green-emitting LED

Details Green-emitting LED Green-emitting LED

2004-09-24

2010-12-14

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C252S30140R, C252S30160R

Reexamination Certificate

active

07851988

ABSTRACT:
Phosphor from the class of the oxynitridosilicates, having a cation M which is doped with divalent europium and having the empirical formula M(1-c)Si2O2N2:Dc, where M=Sr or M=Sr(1-x-y)BaYCaxwith x+y<0.5is used, the oxynitridosilicate completely or predominantly comprising the high-temperature-stable modification HT.

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