6773 PPI GaN-Based Blue Micro-LED Displays Fabricated by Monolithic Integration Technology

This study employs monolithic integration technology to fabricate Micro-LED display devices, which present a 0.12-inch, 640×480 blue active-matrix display with an ultra-high pixel density of 6773 pixels per inch (PPI), featuring a pixel size of 1.80 μm and a pixel pitch of 3.75 μm. The paper provides a detailed discussion of the fabrication process and the unique design approach used. Our Micro-LED display exhibits a luminance uniformity of 76.00% at 2 A/cm² and achieves a maximum brightness of 18,720 nits at 3 A/cm² under full-load conditions. These results demonstrate the tremendous potential of Micro-LED technology for high-resolution near-eye display applications.