Micro semiconductor chip, micro semiconductor structure, and transfer device

A micro semiconductor structure, comprising:

• a substrate;
• at least one micro semiconductor chip disposed on the substrate;
• and
• at least one supporting element, wherein one end of the supporting element is disposed on the substrate, and the other of the supporting element is connected to the side surface of the micro semiconductor chip so that the micro semiconductor chip is fixed to the substrate via the supporting element, wherein the micro semiconductor chip comprises:
• an epitaxial structure, which has a top surface, a bottom surface, and a side surface, wherein the top surface is opposite the bottom surface, and the side surface connects the top surface to the bottom surface;
• a first-type electrode and a second-type electrode disposed on the bottom surface of the epitaxial structure;
• and
• a top light guide element disposed on the top surface of the epitaxial structure, wherein the top light guide element has a light extraction surface and a bottom surface, wherein the edge of the light extraction surface completely overlap the edge of the bottom surface of the top light guide element, and the light extraction surface is a curved surface, a combination of at least two curved surfaces, or a combination of at least one curved surface and at least one planar surface.