Patent ID: 7294865

Claim:
A light emitting device, comprising: a die including a first semiconductor light-emitting layer emitting a first color light having a first wavelength range, and a second semiconductor light-emitting layer emitting a second color light having a second wavelength range different from the first wavelength range; and a photostimulable luminescent substance excitable by at least one of the first and second color lights to emit a third color light having a third wavelength range, the third color light being mixed with the first and second color lights to emit a light blend having a wavelength range covering the first, second, and third wavelength ranges, wherein said die further includes a p-type cladding layer and an n-type cladding layer, said first and second semiconductor light-emitting layers being disposed between said p-type and n-type cladding layers, said first semiconductor light-emitting layer being proximate to said p-type cladding layer, and including a first barrier film proximate to said p-type cladding layer, a second barrier film, and a carrier confining film between said first and second barrier films and having a plurality of alternating peaks and valleys, said carrier confining film having an energy gap smaller than those of said first and second barrier films.