Micro‐Quantum Dot Phase‐Change Display With Ultrahigh Resolution and Wide Color Gamut

Ultra‐high‐resolution microdisplays are essential for future near‐eye display technologies and artificial retina applications. However, existing inorganic semiconductor‐based micro‐light‐emitting diodes (Micro‐LEDs) require individual p‐n junction chips for each red–green–blue (RGB) pixel and depend on complex mass‐transfer processes to achieve full‐color functionality, resulting in high production cost and significant technical barriers. Here, we present a Micro‐Quantum Dot Phase‐Change Display (Micro‐QPCD) that leverages mature semiconductor thin‐film processes to overcome these limitations. By integrating a quantum dot backlight with a phase‐change modulation unit, Micro‐QPCD eliminates the need for wafer heteroepitaxy and pixel‐level mass transfer. The system achieves a feature linewidth of 1 µm and covers 127% of the National Television System Committee (NTSC) color gamut, offering outstanding resolution and vivid color performance. A prototype virtual reality (VR) glasses display demonstrates superior image quality and color fidelity at high resolution, outperforming current commercial solutions. Fully compatible with standard semiconductor fabrication workflows, Micro‐QPCD simplifies the manufacturing process and provides a practical path toward scalable, ultra‐high‐resolution displays for next‐generation VR and artificial retina applications.