Patent ID: 7036946

Claim:
A backlight for a liquid crystal display (LCD), comprising: a substantially planar waveguide; a plurality of light-emitting diodes positioned adjacent the waveguide, the plurality of light-emitting diodes emitting light having a first wavelength range; and a substantially planar reactive element disposed adjacent the waveguide, the reactive element being configured to emit light having a second wavelength range toward the waveguide when the reactive element is excited by light from the plurality of light-emitting diodes; wherein the plurality of light-emitting diodes is a first plurality of light-emitting diodes positioned along an edge of the waveguide that is substantially parallel to a light output direction of the backlight, and further including a second plurality of light-emitting diodes positioned along the edge of the waveguide, the second plurality of light-emitting diodes emitting visible light.