A display device includes a display panel having a first transparent subpixel, a second transparent subpixel and a third transparent subpixel. A light source part provides light to the display panel. The light source part including a first light source configured to generate red light, a second light source configured to generate green light and a third light source configured to generate blue light. The third light source includes a blue light emitting diode and a wavelength shift layer. The wavelength of the blue light emitted from the third light source has a first peak within a range of about 445 nm to about 450 nm and a second peak within a range of about 450 nm to about 540 nm.