ADAPTING SHORT-WAVELENGTH LED'S FOR POLYCHROMATIC, BROADBAND, OR "WHITE" EMISSION
First Claim
1. A device comprising an LED capable of emitting light and bonded to a semiconductor construction capable of converting at least a portion of the emitted light to a longer wavelength light and being partially transparent to the emitted light.
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Abstract
An adapted LED is provided comprising a short-wavelength LED and a re-emitting semiconductor construction, wherein the re-emitting semiconductor construction comprises at least one potential well not located within a pn junction. The potential well(s) are typically quantum well(s). The adapted LED may be a white or near-white light LED. The re-emitting semiconductor construction may additionally comprise absorbing layers surrounding or closely or immediately adjacent to the potential well(s). In addition, graphic display devices and illumination devices comprising the adapted LED according to the present invention are provided.
83 Citations
32 Claims
- 1. A device comprising an LED capable of emitting light and bonded to a semiconductor construction capable of converting at least a portion of the emitted light to a longer wavelength light and being partially transparent to the emitted light.
- 28. The device of claim 28, wherein the light absorbing layer is closely adjacent a potential well.
Specification