High-performance multi-particle color electrophoretic display: A novel dual-charged particle strategy

Abstract

The demand for color electrophoretic displays (EPDs) with high saturated color and response speed in outdoor applications is significant but challenging. To address this issue, we proposed a novel multi-particle color EPD strategy based on a mixture of dual-charged particles (DCP-based EPD). This strategy involves six specifically designed particles, allowing precise control of different particle movements, thereby optimizing the display performance. The resulting four-color EPD device addresses the high cost and complex fabrication challenges associated with traditional color EPDs. It provides vivid color performance, faster colored image transition (from several seconds to 60 ms) while maintaining a high ambient contrast ratio and simplifying the driving process. The DCP-based EPD strategy demonstrates significant potential for future color EPD applications, providing an economical and efficient solution for color display technology.