Subpixel-free full-colour reflective displays via sub-1 V redox modulation

A vibrant, full-colour monopixel reflective display has been developed using a conductive polymer integrated within a Gires-Tournois resonator.By embedding the electrochromic medium inside a phase-engineered cavity, the platform enables sub-volt operation while substantially broadening the colour-tuning range within a single pixel.This architecture reconciles colour versatility with energy-efficient operation and scalability towards micrometre-scale reflective microdisplays.