Patent ID: 8633500

Claim:
A microelectronic workpiece, comprising; a semiconductor substrate; and a plurality of light emitting diodes (LEDs) on the substrate, wherein the individual LEDs includes: a first converter material in a first predetermined pattern on the LED; and a second converter material in a second predetermind pattern on the LED, wherein the second pattern is different the the first pattern, and wherein at least a portion of the LED is accessible through the first and second patterns, wherein: a combined emission from the LED, the converter material, and the second converter material produces a light having desired spectral constituents, the first converter material is spaced apart from the second converter material by a gap on the individual LED, wherein at least a portion of the LED is accessible through the gap, and the gap between the first and second converter materials is selected to compensate for variation in emission wavelengths across the plurality of LEDs.