Oxynitride phosphor and a light emitting device

Details Oxynitride phosphor and a light emitting device Oxynitride phosphor and a light emitting device

2008-07-22

2008-07-22

Ton, Toan (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C252S30140R, C252S30140P

Reexamination Certificate

active

07402943

ABSTRACT:
A preferred embodiment according to the present invention provides in one preferred mode an oxynitride phosphor especially suitable for a light emitting device such as but not limited to a white light emitting diode lamp and also such a light emitting device. The oxynitride phosphor in the embodiment is represented by a general formula Cax(Si,Al)12(O,N)16:Eu2+y, wherein a Ca composition of x is in a range of from 0.75 to 1.0 and a Eu composition of y is in a range of from 0.04 to 0.25, and wherein a main phase thereof has substantially an alpha SiAlON crystal structure.

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