Conventional display emitters such as quantum dots (QDs) fall short of achieving the Rec.2020 color gamut—a key benchmark for next-generation displays. Our perovskite color conversion film, based on perovskite nanocrystals, overcomes this limitation by delivering ultra-high color purity and achieving over 95% Rec.2020 coverage, compared to approximately 76% with QD technologies. This enables vivid, lifelike images across a wide range of devices. The film is fabricated via roll-to-roll UV-curable processing, ensuring scalability and design flexibility. Compatible with various formats including TVs, monitors, and tablets, it enables thinner panels with lower power consumption. Designed for durability, it maintains performance under high temperature and humidity, meeting commercial reliability standards. Its thin and lightweight structure supports broad integration without compromising brightness or efficiency. This technology offers a high-performance, manufacturable solution for ultra-wide color gamut displays.