Addressable, low-powered, full-color electrochromic reflective display

Abstract

Electronic displays have been widely employed to advance human interaction, industrial production, and service sectors. A notable limitation inherent to conventional transmissive displays is their difficulty in ensuring clear visibility under direct sunlight. Additionally, a prominent challenge is their high power consumption during light emission. Alternatively, reflective displays have emerged as a potential solution by harnessing ambient light as an energy source, offering an energy-efficient display technology. Despite their remarkable outdoor visibility without glare, these displays encounter limitations in achieving a wide range of colors due to the constraints of pigment-based coloration. In this study, we present an electrically switchable full-colored monopixel reflective display (FMRD) with a protonation-based reconfigurable photonic structure. Through a specially designed optical structure, we have successfully demonstrated the whole visible color in a single pixel. Finally, we have shown the capability of an addressable platform that allows for the independent activation of 25 individual pixels within the context of FMRD. Also, it is noteworthy that FMRD holds the potential to have a remarkable power density of 0.42 mW/cm². We believe that our suggested device enhances visual experiences.