Multiple wavelength light-emitting diode chip and related methods

A light-emitting diode (LED) chip comprising:

• a substrate;
• a first active LED structure on the substrate, the first active LED structure comprising a first pattern of first light-emitting junctions that is configured to emit light of a first peak wavelength;
• a second active LED structure on the first active LED structure, the second active LED structure comprising a second pattern of second light-emitting junctions that is configured to emit light of a second peak wavelength that is different than the first peak wavelength;
• and
• electrical connections to each of the first light-emitting junctions and each of the second light-emitting junctions, the electrical connections being arranged such that the first active LED structure and the second active LED structure are between the electrical connections and the substrate.

A method comprising:

• forming a first active light-emitting diode (LED) structure comprising a first n-type layer and a first p-type layer;
• patterning the first active LED structure to form a first pattern of first light-emitting junctions that is configured to emit light of a first peak wavelength;
• forming a second active LED structure comprising a second n-type layer and a second p-type layer;
• patterning the second active LED structure to form a second pattern of second light-emitting junctions that is configured to emit light of a second peak wavelength that is different than the first peak wavelength;
• and
• bonding the first active LED structure to the second active LED structure.