Green phosphor of thiogallate, red phosphor of alkaline earth sulfide and white light emitting device thereof

摘要

The present invention relates to a white light emitting device in which a thiogallate based phosphor capable of emitting green light and an alkaline earth metal sulfide based phosphor capable of emitting red light are arranged on an upper surface of a light emitting diode for emitting ultraviolet rays or blue light such that the mixing of the lights can result in white light with high brightness, and thus, excellent white light with high color purity and color reproducibility after color filtration.