MIT team develops full-color vertical Micro LED with resolution of 5100PPI

According to news on February 3, a research team led by MIT recently announced in Nature magazine that the team has developed a full-color vertical stacked structure Micro LED with an array density of up to 5100 PPI and a size of only 4 μm. It is claimed to be the Micro LED with the highest array density and smallest size currently known.

According to reports, in order to achieve high resolution and tiny size Micro LED, researchers used 2D materials based layer transfer (2DLT) technology.

This technology allows the growth of nearly submicron-thick RGB LEDs on two-dimensional material-coated substrates through fabrication processes such as remote epitaxy or van der Waals epitaxy growth, mechanical release, and stacking LEDs.

The researchers specifically pointed out that the stacking structure height of only 9μm is the key to creating high array density Micro LED.

The research team also demonstrated in the paper the vertical integration of blue Micro LED and silicon film transistors, which is suitable for AM active matrix drive applications. The research team stated that this research is for the manufacture of full-color Micro LED displays for AR/VR.It provides a new route and also provides a common platform for a wider range of three-dimensional integrated devices.