Dual‐Band Operation of Pixelated Electrochromic Display

ABSTRACT Despite advances in light emitting diode(LED)‐based informational displays, the need for energy‐efficient and structurally simple information systems persists. Electrochromic devices have been utilized for E‐paper, but their adoption is hindered by sluggish switching kinetics and structural constraints that limit display area. Furthermore, current electrochromic devices tend to focus on developing only a single goal, such as pixelation, the driving method, and a flexible/stretchable platform. To address these challenges, we developed a pixelated electrochromic device for dynamic dual‐band (visible and near‐infrared band) operation. The device consists of a 100‐pixel that regulates both color and emissivity. Through programmed control via the driving board, individual pixels are operated to display complex patterns and letters, thus offering a versatile platform for next‐generation information displays.