| 简介 |
PURPOSE : A light emitting diode is provided to embody various desired colors by converting the wavelength of primary light emitted from a light emitting chip.
CONSTITUTION : A substrate(10), a light emitting layer(50) and a wavelength conversion layer(60) are sequentially stacked. The light emitting layer includes an N-type semiconductor layer(20) and a P-type semiconductor layer(40). The wavelength conversion layer is a III-group nitride semiconductor doped with rare earth elements. At least one of the light emitting layers emits light with a wavelength shorter than that of light emitted from the light emitting layer.
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