provided are a lighting device , a backlighting device , and a display device that comprise a radiation source such as led and wavelength converting members comprising phosphors . in one embodiment , self - absorption within the devices is suppressed or reduced by placing a selective reflector between two wavelength converting members , and the wavelength converting member emitting light with longer peak wavelength is substantially isolated from the irradiation of another wavelength converting member emitting light with shorter peak wavelength . in other embodiments , the wavelength converting members are arranged in strip configuration ; or in adjacent hexagons configuration .