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US08476664B2 Light emitting diode package having multiple luminescent conversion layers 有权
具有多个发光转换层的发光二极管封装

Light emitting diode package having multiple luminescent conversion layers
Abstract:
A light emitting diode package comprises a light emitting diode chip, a first luminescent conversion layer and a separate second luminescent conversion layer on the first luminescent conversion layer. The first luminescent conversion layer has a first luminescent conversion element surrounding the light emitting diode chip. The second luminescent conversion layer has a second luminescent conversion element located above the light emitting diode chip. An excitation efficiency of the first luminescent conversion element is higher than that of the second luminescent conversion element.
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