Patent ID: 7471040

Claim:
A mixed-color light emitting diode (LED) apparatus, comprising: a substrate; a pixellated away of LEDs formed on the substrate wherein each of the LEDs is one of a) an inorganic semiconductor blue LED comprising a plurality of inorganic semiconductor layers or b) an inorganic semiconductor near-ultraviolet LED comprising a plurality of inorganic semiconductor layers; and a lithographic layer covering at least one portion of the pixellated array, the lithographic layer comprising at least one phosphor selected for converting light emitted by each of the LEDs in the at least one portion of the pixellated array into light of a second wavelength, wherein when the LEDs are blue LEDs, the lithographic layer is selected to convert light emitted by about twenty-five percent of the blue LEDs to red light and light emitted by about fifty percent of the blue LEDs to green light, and further wherein when the LEDs are near-ultraviolet LEDs, the lithographic layer is selected to convert light emitted by about twenty-five percent of the near-ultraviolet LEDs to red light, light emitted by about fifty percent of the near-ultraviolet LEDs to green light, and light emitted by about twenty-five percent of the near-ultraviolet LEDs to blue light.