Light-emitting device, method for producing the same and...

Details Light-emitting device, method for producing the same and... Light-emitting device, method for producing the same and...

2011-06-14

2011-06-14

Patel, Nimeshkumar D (Department: 2879)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S502000, C313S503000, C257S098000, C257S100000

Reexamination Certificate

active

07960909

ABSTRACT:
A light-emitting device assured of high reliability, high efficiency and high color rendering, is provided. The light-emitting device includes a frame, an LED chip provided on the frame, and a fluorescent layer containing an inorganic fluorescent material and an organic fluorescent material and being provided on the LED chip. In the fluorescent layer, the concentration of the inorganic fluorescent material is decreased toward the top from the bottom of the fluorescent layer, and the concentration of the organic fluorescent material is decreased toward the bottom from the top of the fluorescent layer.

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