Multi-grain luminescent ceramics for light emitting devices

Active solid-state devices (e.g. – transistors – solid-state diode – Incoherent light emitter structure – With reflector – opaque mask – or optical element integral...

Reexamination Certificate

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C257S079000, C257S080000, C257S102000, C257SE31002, C257SE31093, C257SE31095, C257SE33004, C257SE31129, C250S493100, C250S505100, C250S909000, C252S301160, C252S301360, C252S30140R, C313S483000, C313S485000, C313S486000, C313S502000, C313S503000, C313S504000

Reexamination Certificate

active

07902564

ABSTRACT:
A ceramic body is disposed in a path of light emitted by a light source. The light source may include a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region. The ceramic body includes a plurality of first grains configured to absorb light emitted by the light source and emit light of a different wavelength, and a plurality of second grains. For example, the first grains may be grains of luminescent material and the second grains may be grains of a luminescent material host matrix without activating dopant.

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Merriam-Webster OnLine definition of Ceramic as noun and adjective.
Michael R Krames et al., “Multi-Grain Luminescent Ceramics for Light Emitting Deviices.” U.S. Appl. No. 11/290,299, filed Nov. 29, 2005, 26 pages.
English translation of German Patent Application No. DE 10349038A1, 9 pages.

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