In this work, we report a new method to fabricate patterned perovskite quantum dots (PQDs). By this method, high resolution patterned PQDs are obtained. This method provides a reference for researchers to fabricate high-resolution patterned PQDs.

In this article, red and green perovskite quantum dots are incorporated into the pixels of a flexible color-conversion layer assembly using microfluidics. The flexible color-conversion layer is then integrated with a blue micro-LED to realize a full-color display with a pixel pitch of 200 μm. Perovskite quantum dots feature a high quantum yield, a tunable wavelength, and high stability. The flexible color-conversion layer using perovskite quantum dots shows good luminous and display performance under different bending conditions; is easy to manufacture, economical, and applicable; and has important potential applications in the development of flexible micro-displays.

This paper presents an easy process based on microfluidics static-droplet-array (SDA) technology to fabricate quantum-dot (QD) arrays for micro-LED displays.