High efficacy polychromic light-emitting diode (led)

Abstract

A light-emitting diode (LED) die comprises: a plurality of pixels, each of the pixels comprising respective groups of epitaxial stacks included in a microLED comprising one or more tunnel junctions and light emitting layers of different colors, the plurality of pixels comprising: a first set of pixels configured to emit a red light; a second set of pixels configured to emit a green light; a third set of pixels configured to emit a blue light; the red light, the green light, and the blue light defining a RGB (red-green-blue) gamut; and a fourth set of pixels configured to emit a yellow light and to increase power efficiency of the device over that of a device with only RGB pixels.

Dependencies are inferred from the claim text.