Quantum Dot‐Driven Innovations in Multicolor Lasing and Laser Display Applications

Quantum Dots (QDs) have emerged as one of the most transformative classes of nanomaterials, a breakthrough acknowledged by the 2023 Nobel Prize in Chemistry. Distinguished by their size‐dependent optical properties, high quantum yields, photostability, and tunable multicolor fluorescence, QDs are extensively studied in both fundamental research and commercial applications. This review focuses on the integration of three major classes of QDs ‐ colloidal quantum dots, perovskite quantum dots, and carbon quantum dots ‐ with laser technologies for the development of next‐generation display systems. Their various material properties are first discussed in the context of polychromatic spontaneous emission. Mechanisms of stimulated emission are then analyzed, with emphasis on their effectiveness in QD‐based platforms. Building on this foundation, strategies for constructing complex, wavelength‐tunable, multicolor lasing systems are explored. Finally, pioneering studies are highlighted to demonstrate how QDs coupled with stimulated emission can deliver exceptional color accuracy and stability, thereby overcoming current technological limitations and paving the way for scalable, compact, and efficient multiwavelength laser televisions.