Pixel unit for semiconductor device and manufacturing method, micro display screen, discrete device

A method of manufacturing a pixel unit for semiconductor device, including:

• preparing a backplane, wherein the backplane is provided with a drive circuit, and the drive circuit is provided with at least one anode;
• and
• forming a display unit and a corresponding common cathode, bonding the pre-prepared first compound semiconductor to the backplane, constructing a first device layer and a first connection part on at least one side corresponding to the first device layer;
• bonding the pre-prepared second compound semiconductor to the surface of the side of the first device layer away from the backplane, and constructing a second device layer and a second connection part on at least one side of the second device layer in the circumferential direction of the second device layer, connecting the second device layer to the corresponding anode and the second connection part of the backplane respectively, and the second connection part and the first connection part are connected end to end to form a common cathode.