Active matrix programmable monolithic light emitting diodes on silicon (LEDoS) displays

In this paper, the first full-color active matrix programmable monolithic Light Emitting Diodes on Silicon (LEDoS) displays are fabricated using flip-chip technology. The forward voltage uniformity of the LED pixels was greatly improved by a double-side ground structure. A basic LED micro-array module was fabricated and the AM substrate has scaling-up ability. By integrating a certain number of LED micro-array modules onto a large-scale AM substrate, a large-scale display is obtained. By this scaling-up method, the utilization rate of the LED wafers is increased significantly. The yield of the LED pixels is improved simultaneously. Red, green and blue phosphors were excited by UV light to realize a full-color display