Transparent Micro-LED Display using Double-layered UV imprinting

This paper proposes a transparent micro-LED display composed of a double-layered UV imprinting, micro-LEDs, and polycarbonate film substrate. The display structure involves two steps of UV imprinting and utilizes silver nanoparticles as a Driver and Scan integrated circuit (IC). RIE etching is conducted to remove the residue between the first and second layers. The micro-LEDs with a size of 0.8 mm are mounted using adhesive, and silver nanoparticles are inkjet-printed for wiring. The fabricated display has a size of a 5x5 matrix with a pixel pitch of 3 mm, and it exhibits a light transmittance of 70% at 550 nm.