Light emitting device with wavelength converted by phosphor
First Claim
1. A light emitting device, comprising:
- a light emitting element portion that radiates light with a predetermined wavelength; and
a wavelength conversion portion that comprises;
a phosphor layer to be excited by the light with the predetermined wavelength; and
a transparent and non-moisture permeability material including layers that sandwich the phosphor layer, the transparent and non-moisture permeability material comprising low-melting glass,wherein the phosphor layer consists essentially of a phosphor without a sealing resin.
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Accused Products
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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Citations
10 Claims
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1. A light emitting device, comprising:
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a light emitting element portion that radiates light with a predetermined wavelength; and a wavelength conversion portion that comprises; a phosphor layer to be excited by the light with the predetermined wavelength; and a transparent and non-moisture permeability material including layers that sandwich the phosphor layer, the transparent and non-moisture permeability material comprising low-melting glass, wherein the phosphor layer consists essentially of a phosphor without a sealing resin. - View Dependent Claims (2, 3, 4)
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5. A light emitting device, comprising:
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a plurality of LED elements disposed on a same plane; and a wavelength conversion portion that comprises; a flat transparent glass base member that is disposed opposite to the plurality of LED elements to allow light extraction through the base member, the flat transparent glass base member comprising a non-moisture permeability material; and a phosphor layer that comprises a phosphor to be excited by light emitted from the plurality of LED elements and is formed on the base member; wherein the phosphor layer is a predetermined patterned layer including gaps therein, the phosphor layer is disposed directly above and at a distance from the plurality of LED elements, and the phosphor layer consists essentially of the phosphor without a sealing resin. - View Dependent Claims (6, 7, 10)
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8. A light emitting device, comprising:
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a plurality of LED elements disposed on a same plane; and a wavelength conversion portion that comprises; a flat transparent glass base member that is disposed opposite to the plurality of LED elements to allow light extraction through the base member, the flat transparent glass base member comprising a non-moisture permeability material; and a phosphor layer including a phosphor to be excited by light emitted from the plurality of LED elements, the phosphor layer having a predetermined pattern with openings and being sealed in an interior of the flat transparent glass base member while being in the form of a film. - View Dependent Claims (9)
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Specification