| 20110108868 | LIGHT EMITTING DEVICE, LIGHT EMITTING DEVICE PACKAGE AND LIGHTING SYSTEM - A light emitting device according to an embodiment includes a first conductive semiconductor layer; a second conductive semiconductor layer; and an active layer including first and second active layers between the first and second conductive semiconductor layers. The first active layer emits light having a first wavelength band of 440 nm to 500 nm, and the second active layer emits light having a second wavelength band, which is shorter than the first wavelength band. | 05-12-2011 |
