A light emitting diode (LED). In one embodiment, the LED comprises a base including a cavity, an LED chip disposed on a bottom of the cavity and configured to generate a first light, and a light conversion layer. The light conversion layer includes an upper substrate, a lower substrate and a wavelength conversion particle. The light conversion layer is configured to convert a portion of the first light into a second light according to light emitted by the wavelength conversion particle. Furthermore, the light conversion layer is disposed on an upper surface of the base.