Element transfer device and method for controlling the same

An element transfer device comprising:

• a polygonal container accommodating a substrate comprising a plurality of element holes;
• a plurality of vibration sources configured to generate vibrations and output the vibrations to a fluid within the container;
• a floating mask arranged on the substrate and comprising a plurality of mask holes;
• a processor configured to control an output of each of the plurality of vibration sources,
• wherein the container accommodates the floating mask, the fluid, and microelements distributed in the fluid, and
• the processor is further configured to perform:
• a dispersion operation of controlling, in a state in which the floating mask is arranged on the substrate, the microelements to be dispersed in the fluid on the substrate through the plurality of mask holes in the floating mask by outputting vibration from at least one of the plurality of vibration sources;
• and
• a transfer operation of transferring, in a state in which the floating mask is removed from the container in which the substrate is arranged, the microelements into the plurality of element holes in the substrate by outputting vibration from at least one of the plurality of vibration sources.