Patent ID: 8654064

Claim:
A backlight for a display, comprising: a backlight having a plurality of light emitters configured to collectively generate white light, the plurality of light emitters including: a plurality of red emitters each having a blue light emitting diode (LED) and configured to emit red light; a plurality of green emitters each having a blue LED and configured to emit green light; and a plurality of blue emitters each having a blue LED and configured to emit blue light; wherein each of the red emitters further comprises one of the blue LEDs, a red phosphor or nanoparticle photoconverter configured to convert blue light from the one of the blue LEDs to red light, and a casing surrounding the one of the blue LEDs and configured both to pass the red light and to block the blue light; wherein each of the green emitters further comprises another one of the blue LEDs, a green phosphor or nanoparticle photoconverter configured to convert blue light from the another one of the blue LEDs to green light, and a casing surrounding the another one of the blue LEDs and configured both to pass the green light and to block the blue light; wherein the red phosphor or nanoparticle photoconverter is disposed on the one of the blue LEDs, makes contact with the one of the blue LEDs, and leaves one or more sides of the one of the blue LEDs exposed, and wherein the green phosphor or nanoparticle photoconverter is disposed on the another one of the blue LEDs, makes contact with the another one of the blue LEDs, and leaves one or more sides of the another one of the blue LEDs exposed, wherein the casing of each red emitter is a yellow polymer casing, and wherein the casing of each green emitter is a yellow polymer casing.