Micro light emitting diode and micro light emitting diode device substrate

A micro light emitting diode device substrate, comprising:

• a carrier;
• and
• a plurality of micro light emitting diodes, disposed on the carrier, each of the micro light emitting diodes comprising:
• an epitaxial structure, comprising a first surface, a second surface opposite to the first surface, and a side surface connected to the first surface and the second surface, the side surface comprising a first portion and a second portion, the first portion being connected to the second portion to form a turning position, wherein a width of the epitaxial structure gradually increases from the first surface to the turning position and gradually decreases from the turning position to the second surface;
• a first electrode and a second electrode, wherein the first electrode is located between the first surface of the epitaxial structure and the carrier, the second electrode is disposed on the second surface of the epitaxial structure and a planarization layer, and the turning position is aligned to an upper surface the planarization layer.