US 2012/0056525 A1 · LIGHT EMITTING DEVICE

Abstract

A light emitting device according to one embodiment includes a light emitting element that emits light having a wavelength of 250 nm to 500 nm; plural red fluorescent layers that are formed above the light emitting element to include a red fluorescent material, the red fluorescent layers being disposed at predetermined intervals; and plural green fluorescent layers that are formed above the light emitting element to include a green fluorescent material, a distance between the light emitting element and the green fluorescent layers being larger than a distance between the light emitting element and the red fluorescent layers.

Claims20

Dependent claims

A light emitting device comprising:

a light emitting element emitting light having wavelength of 250 nm to 500 nm;
red fluorescent layers formed above the light emitting element, each of the red fluorescent layers including a red fluorescent material, the red fluorescent layers being disposed at predetermined intervals;
and
green fluorescent layers formed above the light emitting element, each of the green fluorescent layers including a green fluorescent material, a distance between the light emitting element and the green fluorescent layers being larger than a distance between the light emitting element and the red fluorescent layers.

1 more element

A light emitting device comprising:

a light emitting element emitting light having wavelength of 250 nm to 500 nm;
red fluorescent layers formed above the light emitting element, each of the red fluorescent layers including a red fluorescent material, the red fluorescent layers being disposed at predetermined intervals;
and
a green fluorescent layer formed above the light emitting element, the green fluorescent layer including a green fluorescent material, a distance between the light emitting element and the green fluorescent layer being larger than a distance between the light emitting element and the red fluorescent layers.

1 more element

Dependencies are inferred from the claim text.

Facts

Application

13/033,911Filed 24 Feb 2011

Priority

JP 2010-1999847 Sep 2010

Published

8 Mar 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

H05B 33/14
Light sources with substantially two-dimensional [2D] radiating surfaces: characterised by the chemical or physical composition or the arrangement…
H10H 20/8513
Wavelength conversion materials: having two or more wavelength conversion materials
H10H 20/819
Bodies: characterised by their shape, e.g. curved or truncated substrates
H10H 20/8516
Wavelength conversion means: having a non-uniform spatial arrangement or non-uniform concentration, e.g. patterned wavelength conversion layer or…

Light emitting device

Life of this patent

Light emitting device

Life of this patent

Abstract

Claims20