Chip tray for self-assembly, and method for supplying semiconductor light emitting elements

A method of supplying semiconductor light emitting devices to an assembly substrate in a fluid contained in an assembly chamber, the method comprising:

• supplying the semiconductor light emitting devices on a tray unit;
• and
• transferring the tray unit upward with respect to a bottom surface of the assembly chamber so that the tray unit approaches the assembly substrate within a predetermined distance,
• wherein the supplying the semiconductor light emitting devices on the tray unit supplies the semiconductor light emitting devices at predetermined intervals through a plurality of holes formed on a region where a plurality of electromagnets are disposed in a nozzle unit fixed on the tray unit, and
• wherein a magnetic field is generated by the plurality of electromagnets provided in the tray unit when a fluid in which the semiconductor light emitting devices are dispersed is supplied on the tray unit from the plurality of holes.