Micro light-emitting diode and manufacturing method of micro light-emitting diode

A micro light-emitting diode comprising:

• a first micro light-emitting diode including a first light-emitting layer that emits light of a first wavelength;
• and
• a second micro light-emitting diode including the first light-emitting layer and a second light-emitting layer that emits light of a second wavelength longer than the first wavelength,
• wherein:
• the first micro light-emitting diode and the second micro light-emitting diode are both made of a nitride semiconductor;
• the second light-emitting layer is a nitride semiconductor layer doped with a first rare earth element;
• and
• the nitride semiconductor of the first micro light-emitting diode and the nitride semiconductor of the second micro light-emitting diode are separated from each other;
• wherein the first light-emitting layer is a nitride semiconductor layer doped with a second rare earth element.

A micro light-emitting diode comprising:

• a first micro light-emitting diode that includes a first light-emitting layer containing a first rare earth element and emits light at a first wavelength;
• and
• a second micro light-emitting diode that includes a second light-emitting layer containing a second rare earth element and emits light at a second wavelength longer than the first wavelength,
• wherein the first micro light-emitting diode and the second micro light-emitting diode are both made of a nitride semiconductor, and
• the first light-emitting layer and the second light-emitting layer are both covered with an electrode layer in a plan view.

A manufacturing method of a micro light-emitting diode comprising:

• forming a nitride semiconductor layer including a first light-emitting layer that emits light of a first wavelength;
• forming a second light-emitting layer by doping a first rare earth element, the second light-emitting layer emitting light of a second wavelength longer than the first wavelength;
• and
• separating the nitride semiconductor layer into a first micro light-emitting diode that includes the first light-emitting layer and emits light at the first wavelength and a second micro light-emitting diode that includes the first light-emitting layer and the second light-emitting layer and emits light at the second wavelength.

A manufacturing method of a micro light-emitting diode comprising:

• forming a first micro light-emitting diode that includes a first light-emitting layer containing a first rare earth element and emits light at a first wavelength, the first micro light-emitting diode formed with a nitride semiconductor;
• forming a second micro light-emitting diode that includes a second light-emitting layer containing a second rare earth element and emits light at a second wavelength longer than the first wavelength, the second micro light-emitting diode formed with a nitride semiconductor;
• and
• covering the first light-emitting layer and the second light-emitting layer with an electrode layer in a plan view.