Conversion LED having a phosphor component based on an agglomeration of phosphor particles and pores
AssigneePatent-Treuhand-Gesellschaft fuer elektrische Gluehlampen mbH
InventorsFrank Jermann, Martin Zachau
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Abstract
The LED has phosphor particles (2) with a mean phosphor particle size d50 selected from the range of from 0.1 μm, inclusive, to 1.5 μm, inclusive, in particular the phosphor particles having primary particles (4) with a mean particle size (5) selected from the range of from 0.1 μm, inclusive, to 1.0 μm, inclusive. The primary particles, which comprise, for example, an yttrium aluminum garnet (Y3Al5O12) doped with cerium, are agglomerated to form the phosphor particles.
Claims15
A conversion LED, having a chip that emits primary radiation with a peak wavelength of from 300 to 550 nm, and having at least one phosphor that is present as a powder and absorbs at least a portion of the primary radiation and emits at another wavelength than the secondary radiation, wherein the mean particle size d50 of the phosphor is in the range of 0.1 μm to 1.5 μm and the phosphor particles have pores with a mean pore size in the range of from 0.1 μm, inclusive, to 1.0 μm, inclusive.
Dependencies are inferred from the claim text.