Light-emitting mesa for micro-led and method for forming the same, and micro-led chip

A light-emitting mesa for a micro-LED, comprising:

• a transparent conductive layer, a first epitaxial layer, a light-emitting layer and a second epitaxial layer arranged from a side of the light-emitting mesa facing away from a light extraction side toward a side of the light-emitting mesa facing the light extraction side,
• wherein
• the transparent conductive layer is arranged on the side of the light-emitting mesa facing away from the light extraction side;
• the first epitaxial layer is arranged between the transparent conductive layer and the light-emitting layer;
• the light-emitting layer is arranged between the first epitaxial layer and the second epitaxial layer, and the light-emitting layer is configured to emit light;
• and
• the second epitaxial layer is arranged on the side of the light-emitting mesa facing the light extraction side,
• wherein
• an area of the second epitaxial layer is greater than an area of the first epitaxial layer,
• a side surface of the light-emitting mesa has an inclined surface, and
• an inclination angle of the inclined surface is 55° to 75°.