Independent drive of integrated multicolor (RGBY) micro-LED array using regularly arrayed InGaN based nanocolumns

We demonstrate monolithic integration of blue-, green-, yellow-, and red-emitting micro light emitting diodes (LEDs) and their independent drive using matrix wiring electrodes. The four-color (RGBY) micro-LEDs are prepared on the same template by using regularly arrayed InGaN based nanocolumns with different column diameters and periods via selective area growth.