Femtosecond laser direct-writing enables ultra-high-resolution quantum-dot color-conversion pixel patterning for micro-LED displays

https://www.eurekalert.org/news-releases/1142721

"spatially Bessel shaped pristine fs-laser drilled 100 nm hole molds into SU-8 polymer layer without damaging underlying substrate, filled with cadmium selenide quantum dots/ cured forming luminescent pixels as small as 700 nm... no optical/ thermal damage to quantum dots... resulting maskless, high-precision process yields red and green pixel arrays with exceptional color purity, high luminescence uniformity, color gamut up to 111% NTSC standard... ultra-dense, energy-efficient micro-displays"