Patent ID: 8796720

Claim:
A white light emitting diode, comprising: a red light emitting unit, a green light emitting unit, a blue light emitting unit, and an optical grating which are located on a same plane; and the red light emitting unit, the green light emitting unit, and the blue light emitting unit are located around the optical grating; each of the red light emitting unit, the green light emitting unit, and the blue light emitting unit comprises a first semiconductor layer, an first active layer, a second semiconductor layer, a first reflector layer, a first electrode, and a second electrode; the first semiconductor layer, the first active layer, the second semiconductor layer and the first reflector layer are stacked in that order; the first electrode is electrically connected with the first semiconductor layer; and the second electrode is electrically connected with the second semiconductor layer; the optical grating comprises a third semiconductor layer, a second active layer, a fourth semiconductor layer stacked in that order; wherein, the third semiconductor layer and the first semiconductor layers of the red light emitting unit, the green light emitting unit, and the blue light emitting unit are a continuous integrated structure.