Kookmin University researchers develop integrated micro-LED assembly technology

A Kookmin University research team has developed an integrated assembly technology critical to the commercial production of micro-light emitting diode (micro-LED) displays.

The university said Wednesday that the technology enables micro-LEDs, key components of next-generation displays, to be precisely assembled at desired positions and in desired orientations.

Led by chemistry professor Do Young-rak, the team has developed a method that integrates several manufacturing processes considered critical to the commercialization of micro-LEDs — including mass assembly, chip orientation control, defective-pixel repair and mass transfer — on a single alignment platform.

The findings were published online in the international journal Advanced Functional Materials under the title “Dielectrophoretic Assembly, Repair, and Transfer Technology for Micro-LED Display Boosted by Injection-Suction Printing.” The study was also selected for the Front Cover of an upcoming print issue.

Eo Yoon-jae of the university’s department of chemistry was the first author, while Do was the corresponding autho