WHITE LIGHT EMITTING DEVICE

摘要

The present invention relates to a white light-emitting device. According to an embodiment of the present invention, the white light-emitting device comprises: a first light-emitting diode which emits light having a peak wavelength in a range of 420 nm to 430 nm; a second light-emitting diode which emits light having a peak wavelength in a range of 440 nm to 460 nm; and a wavelength conversion unit which is disposed on the first and second light-emitting diodes and converts a wavelength of light emitted from the first and second light-emitting diodes. The wavelength conversion unit comprises a red phosphor which emits incident light as light having a peak wavelength of a red light band. According to the present invention, the white light-emitting device simultaneously uses the light-emitting diode having the peak wavelength in a range of 420 nm to 430 nm and the light-emitting diode having the peak wavelength in a range of 440 nm and 460 nm and implements white light by using the wavelength conversion unit including the red phosphor, thereby minimizing user inconvenience and emitting a wavelength band optimized for plant growth.