Patent ID: 6900466

Claim:
A semiconductor component for generating visible polychromatic light, comprising: a semiconductor chip having a first semiconductor layer and a second semiconductor layer adjacent to said first semiconductor layer; said second semiconductor layer including an electroluminescent region emitting visible light of a first color having a first wavelength; said first semiconductor layer having a first band gap and being specifically doped to form states of allowed energy levels within said first band gap, said electroluminescent region having a second band gap, said first band gap being smaller than said second band gap; said first semiconductor layer absorbing part of the visible light of the first color and said first semiconductor layer re-emitting visible light of a second color having a second wavelength by a radiant transition involving said allowed energy levels within said first band gap, the second color being different from the first color, and the second wavelength being longer than the first wavelength; and said first semiconductor layer and said second semiconductor layer being configured to emit white light from said semiconductor chip by mixing the emitted and the reemitted visible light.