Light emitting device with wavelength converted by phosphor
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United States of America Patent
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Mar 3, 2009
Grant Date -
Dec 23, 2004
app pub date -
Jun 17, 2004
filing date -
Jun 18, 2003
priority date (Note) -
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Abstract
A light emitting device has a light emitting element portion that radiates light with a predetermined wavelength, and a wavelength conversion portion that surrounds a phosphor to be excited by the light with the predetermined wavelength with a transparent and non-moisture permeability material in the form of laminae. Further, a light emitting device has a plurality of LED elements disposed on a same plane, and a wavelength conversion portion that comprises a flat transparent base member that is disposed opposite to the plurality of LED elements and a phosphor layer that is of a phosphor to be excited by light emitted from the LED element and is formed like a film on the base member. The phosphor layer includes part with no phosphor in plane.
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